/* roulang page: index */
:root {
            --color-primary: #17171A;
            --color-accent: #FF3B5C;
            --color-accent-dark: #E62E4C;
            --color-signal: #2FE6C8;
            --color-warm: #F5C451;
            --color-bg: #F6F7F9;
            --color-card: #FFFFFF;
            --color-dark: #202125;
            --color-text: #1D1D1F;
            --color-text-secondary: #55555A;
            --color-text-light: #8A8A8E;
            --color-border: #E5E5E8;
            --radius-card: 12px;
            --radius-btn: 24px;
            --radius-tag: 4px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --container-max: 1200px;
            --font-chinese: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --transition-base: 0.25s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-chinese);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.85;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }

        a:hover,
        a:focus-visible {
            outline: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(255, 59, 92, 0.45);
            outline-offset: 2px;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: background-color var(--transition-base), color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: 16px;
            border: 1px solid var(--color-border);
            border-radius: 8px;
            background-color: #fff;
            padding: 10px 14px;
            width: 100%;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        input:focus,
        textarea:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(255, 59, 92, 0.1);
            outline: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* ========== 顶部公告条 ========== */
        .announcement-bar {
            background-color: var(--color-primary);
            color: #fff;
            padding: 8px 0;
            font-size: 14px;
            position: relative;
            z-index: 1001;
        }
        .announcement-bar .container {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            text-align: center;
        }
        .announcement-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--color-signal);
            display: inline-block;
            flex-shrink: 0;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.55; transform: scale(0.85); }
        }
        .announcement-bar a {
            color: var(--color-signal);
            font-weight: 600;
            margin-left: 4px;
        }
        .announcement-bar a:hover {
            color: #fff;
            text-decoration: underline;
        }

        /* ========== Header 导航 ========== */
        .site-header {
            background-color: var(--color-primary);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .brand-logo .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-accent), var(--color-warm));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
        }
        .brand-logo span.logo-text-strong {
            color: var(--color-accent);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }
        .nav-links a {
            color: rgba(255, 255, 255, 0.82);
            font-size: 15px;
            font-weight: 500;
            padding: 6px 0;
            position: relative;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background-color: var(--color-accent);
            transition: width var(--transition-base);
        }
        .nav-links a:hover {
            color: #fff;
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a.active {
            color: #fff;
            font-weight: 600;
        }
        .nav-links a.active::after {
            width: 100%;
            background-color: var(--color-accent);
        }

        /* 汉堡按钮 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
            cursor: pointer;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: #fff;
            border-radius: 2px;
            transition: transform var(--transition-base), opacity var(--transition-base);
        }
        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* 移动端抽屉 */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: var(--color-primary);
            z-index: 999;
            padding: 24px;
            overflow-y: auto;
            transform: translateX(-100%);
            transition: transform 0.3s ease;
        }
        .mobile-drawer.open {
            transform: translateX(0);
        }
        .mobile-drawer ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .mobile-drawer a {
            color: rgba(255, 255, 255, 0.85);
            font-size: 18px;
            font-weight: 500;
            padding: 14px 8px;
            display: block;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .mobile-drawer a:hover,
        .mobile-drawer a.active {
            color: var(--color-accent);
            background-color: rgba(255, 59, 92, 0.08);
            border-radius: 8px;
        }

        /* ========== Section 通用 ========== */
        .section {
            padding: 64px 0;
        }
        .section-dark {
            background-color: var(--color-primary);
            color: #fff;
        }
        .section-gray {
            background-color: var(--color-bg);
        }
        .section-white {
            background-color: var(--color-card);
        }
        .section-tight {
            padding: 32px 0;
        }
        .section-heading {
            margin-bottom: 40px;
        }
        .section-heading h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 12px;
            color: var(--color-primary);
        }
        .section-dark .section-heading h2 {
            color: #fff;
        }
        .section-heading p {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 760px;
            line-height: 1.9;
        }
        .section-dark .section-heading p {
            color: rgba(255, 255, 255, 0.72);
        }

        /* ========== Hero ========== */
        .hero {
            position: relative;
            background-image: url('/assets/images/865c79322020005d.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 560px;
            display: flex;
            align-items: center;
            padding: 72px 0;
            color: #fff;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(23, 23, 26, 0.92) 0%, rgba(23, 23, 26, 0.65) 50%, rgba(32, 33, 37, 0.78) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 48px;
        }
        .hero-content {
            flex: 1;
            max-width: 620px;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: rgba(255, 59, 92, 0.18);
            border: 1px solid rgba(255, 59, 92, 0.45);
            color: #FF7B92;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }
        .hero-tag .live-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: var(--color-accent);
            animation: pulse-dot 1.5s infinite;
        }
        .hero h1 {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .hero h1 .highlight {
            color: var(--color-accent);
        }
        .hero-subtitle {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
            line-height: 1.7;
            max-width: 520px;
        }
        .hero-cta {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: all var(--transition-base);
            border: 2px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background-color: var(--color-accent);
            color: #fff;
            border-color: var(--color-accent);
        }
        .btn-primary:hover {
            background-color: var(--color-accent-dark);
            border-color: var(--color-accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 59, 92, 0.35);
            color: #fff;
        }
        .btn-secondary {
            background-color: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.55);
        }
        .btn-secondary:hover {
            background-color: #fff;
            color: var(--color-primary);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn-dark-outline {
            background-color: transparent;
            color: var(--color-primary);
            border-color: var(--color-primary);
        }
        .btn-dark-outline:hover {
            background-color: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            transform: translateY(-2px);
        }

        .hero-data-card {
            background-color: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(0);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-card);
            padding: 28px 32px;
            min-width: 280px;
            max-width: 320px;
            flex-shrink: 0;
        }
        .hero-data-card .data-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 6px;
            letter-spacing: 1px;
            text-transform: uppercase;
        }
        .hero-data-card .data-value {
            font-size: 42px;
            font-weight: 700;
            color: var(--color-signal);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .hero-data-card .data-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.6;
        }
        .hero-data-divider {
            height: 1px;
            background-color: rgba(255, 255, 255, 0.15);
            margin: 18px 0;
        }

        /* ========== 实时数据带 ========== */
        .stats-band {
            background-color: var(--color-primary);
            padding: 28px 0;
            margin-top: -1px;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            border-left: 1px solid rgba(255, 255, 255, 0.08);
        }
        .stat-item {
            text-align: center;
            padding: 8px 20px;
            border-right: 1px solid rgba(255, 255, 255, 0.08);
        }
        .stat-number {
            font-size: 38px;
            font-weight: 700;
            color: var(--color-signal);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
            letter-spacing: -1px;
        }
        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 4px;
        }

        /* ========== 核心业务入口 ========== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .category-card {
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .category-card .cat-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 16px;
            flex-shrink: 0;
        }
        .cat-icon.icon-red { background-color: rgba(255, 59, 92, 0.12); color: var(--color-accent); }
        .cat-icon.icon-teal { background-color: rgba(47, 230, 200, 0.12); color: #1AA98F; }
        .cat-icon.icon-gold { background-color: rgba(245, 196, 81, 0.18); color: #C9981E; }
        .cat-icon.icon-dark { background-color: rgba(23, 23, 26, 0.08); color: var(--color-primary); }
        .category-card h3 {
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--color-primary);
        }
        .category-card p {
            font-size: 14.5px;
            color: var(--color-text-secondary);
            margin-bottom: 16px;
            line-height: 1.7;
            flex-grow: 1;
        }
        .category-card .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .category-card .card-link:hover {
            color: var(--color-accent-dark);
            gap: 8px;
        }

        /* ========== 品牌介绍 ========== */
        .about-section {
            background-color: var(--color-card);
        }
        .about-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .about-text h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 18px;
            line-height: 1.4;
        }
        .about-text p {
            font-size: 15.5px;
            color: var(--color-text-secondary);
            line-height: 2.0;
            margin-bottom: 16px;
        }
        .about-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .about-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }

        /* ========== 解决方案 ========== */
        .solution-block {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .solution-item {
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            padding: 22px 20px;
            border: 1px solid var(--color-border);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }
        .solution-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .solution-item h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 8px;
        }
        .solution-item p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        /* ========== 行业场景矩阵 ========== */
        .scene-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 8px;
        }
        .scene-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: 20px;
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text);
            transition: all var(--transition-base);
            cursor: default;
        }
        .scene-tag:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background-color: rgba(255, 59, 92, 0.04);
            transform: translateY(-1px);
        }
        .scene-tag .tag-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: var(--color-signal);
            flex-shrink: 0;
        }

        /* ========== 技术架构流程 ========== */
        .flow-steps {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
            position: relative;
        }
        .flow-step {
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            padding: 22px 16px;
            text-align: center;
            border: 1px solid var(--color-border);
            position: relative;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }
        .flow-step:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .flow-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background-color: var(--color-primary);
            color: #fff;
            font-weight: 700;
            font-size: 14px;
            margin-bottom: 12px;
            font-variant-numeric: tabular-nums;
        }
        .flow-step h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 6px;
        }
        .flow-step p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .flow-arrow {
            position: absolute;
            top: 50%;
            right: -14px;
            transform: translateY(-50%);
            color: var(--color-text-light);
            font-size: 18px;
            z-index: 2;
        }

        /* ========== 平台能力 ========== */
        .capability-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .cap-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 16px;
            background-color: var(--color-card);
            border-radius: 10px;
            border: 1px solid var(--color-border);
        }
        .cap-item .cap-badge {
            flex-shrink: 0;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            margin-top: 8px;
        }
        .cap-badge.bg-teal { background-color: var(--color-signal); }
        .cap-badge.bg-red { background-color: var(--color-accent); }
        .cap-badge.bg-gold { background-color: var(--color-warm); }
        .cap-badge.bg-dark { background-color: var(--color-primary); }
        .cap-item h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 4px;
        }
        .cap-item p {
            font-size: 13.5px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ========== 数据洞察 ========== */
        .insight-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .insight-card {
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }
        .insight-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-signal));
        }
        .insight-card .insight-num {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-accent);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .insight-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 8px;
        }
        .insight-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        /* ========== 最新文章 ========== */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .article-card {
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .article-card .article-img-wrap {
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
        }
        .article-card .article-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .article-card:hover .article-img-wrap img {
            transform: scale(1.05);
        }
        .article-card .article-body {
            padding: 16px 18px 20px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        .article-card h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 8px;
            line-height: 1.55;
        }
        .article-card .article-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--color-text-light);
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .article-card .article-meta .tag {
            background-color: rgba(255, 59, 92, 0.08);
            color: var(--color-accent);
            padding: 2px 8px;
            border-radius: var(--radius-tag);
            font-weight: 500;
            font-size: 11px;
        }
        .article-card p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            flex-grow: 1;
        }

        /* ========== 运营指南 ========== */
        .guide-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            counter-reset: guide-counter;
        }
        .guide-item {
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            border: 1px solid var(--color-border);
            position: relative;
            counter-increment: guide-counter;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }
        .guide-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .guide-item::before {
            content: counter(guide-counter, decimal-leading-zero);
            font-size: 48px;
            font-weight: 800;
            color: rgba(23, 23, 26, 0.06);
            position: absolute;
            top: 12px;
            right: 16px;
            line-height: 1;
            font-variant-numeric: tabular-nums;
        }
        .guide-item h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 10px;
            padding-right: 50px;
        }
        .guide-item p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
        }

        /* ========== 专家观点 ========== */
        .expert-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .expert-card {
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
        }
        .expert-card .expert-quote {
            font-size: 14.5px;
            color: var(--color-text);
            line-height: 1.85;
            margin-bottom: 14px;
            font-style: normal;
            position: relative;
            padding-left: 16px;
        }
        .expert-card .expert-quote::before {
            content: '';
            position: absolute;
            left: 0;
            top: 4px;
            width: 3px;
            height: calc(100% - 8px);
            background-color: var(--color-warm);
            border-radius: 2px;
        }
        .expert-card .expert-name {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text);
        }
        .expert-card .expert-role {
            font-size: 12px;
            color: var(--color-text-light);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 840px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background-color: var(--color-card);
            border-radius: 10px;
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: border-color var(--transition-base);
        }
        .faq-item.open {
            border-color: var(--color-signal);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition-base);
        }
        .faq-question:hover {
            color: var(--color-accent);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background-color: var(--color-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            transition: transform var(--transition-base), background-color var(--transition-base), color var(--transition-base);
            color: var(--color-text-secondary);
            font-weight: 600;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background-color: var(--color-signal);
            color: var(--color-primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 20px 20px;
        }
        .faq-answer p {
            font-size: 14.5px;
            color: var(--color-text-secondary);
            line-height: 1.9;
        }

        /* ========== 合规与保障 ========== */
        .compliance-box {
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .compliance-box p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.9;
        }
        .compliance-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .compliance-tags span {
            background-color: rgba(47, 230, 200, 0.1);
            color: #1AA98F;
            font-size: 13px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 14px;
        }

        /* ========== 合作伙伴 ========== */
        .partner-list {
            display: flex;
            flex-wrap: wrap;
            justify-content: flex-start;
            gap: 12px;
            max-width: 760px;
            margin: 0 auto;
        }
        .partner-item {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: 8px;
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: border-color var(--transition-base), color var(--transition-base);
            cursor: default;
        }
        .partner-item:hover {
            border-color: var(--color-accent);
            color: var(--color-primary);
        }

        /* ========== CTA 转化区 ========== */
        .cta-section {
            background-color: var(--color-primary);
            color: #fff;
            padding: 64px 0;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.4;
        }
        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.8;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        .cta-section .btn-primary {
            background-color: var(--color-accent);
            color: #fff;
            border-color: var(--color-accent);
        }
        .cta-section .btn-primary:hover {
            background-color: var(--color-accent-dark);
            border-color: var(--color-accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 59, 92, 0.4);
        }
        .cta-section .btn-secondary {
            background-color: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.5);
        }
        .cta-section .btn-secondary:hover {
            background-color: #fff;
            color: var(--color-primary);
            border-color: #fff;
        }

        /* ========== 表单 ========== */
        .form-section {
            background-color: var(--color-bg);
            padding: 56px 0;
        }
        .form-container {
            max-width: 560px;
            margin: 0 auto;
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
        }
        .form-container h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 20px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text);
            margin-bottom: 6px;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .form-privacy {
            font-size: 12px;
            color: var(--color-text-light);
            margin-top: 8px;
            text-align: center;
        }

        /* ========== Footer ========== */
        .site-footer {
            background-color: var(--color-primary);
            color: #fff;
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }
        .footer-brand h3 .highlight {
            color: var(--color-accent);
        }
        .footer-brand p {
            font-size: 13.5px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.8;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col a {
            font-size: 13.5px;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition-base);
        }
        .footer-col a:hover {
            color: var(--color-signal);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 12.5px;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom a:hover {
            color: var(--color-signal);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 18px;
            }
            .nav-links a {
                font-size: 14px;
            }
            .hero {
                min-height: 500px;
                padding: 48px 0;
            }
            .hero h1 {
                font-size: 36px;
            }
            .hero .container {
                flex-direction: column;
                text-align: center;
            }
            .hero-content {
                max-width: 100%;
            }
            .hero-subtitle {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }
            .hero-cta {
                justify-content: center;
            }
            .hero-data-card {
                margin: 0 auto;
                min-width: auto;
                max-width: 380px;
                width: 100%;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 8px;
                border: none;
            }
            .stat-item {
                border: 1px solid rgba(255, 255, 255, 0.08);
                border-radius: 8px;
                padding: 16px;
            }
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .solution-block {
                grid-template-columns: repeat(2, 1fr);
            }
            .flow-steps {
                grid-template-columns: repeat(3, 1fr);
                gap: 12px;
            }
            .flow-arrow {
                display: none;
            }
            .capability-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .guide-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .expert-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-content {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-drawer {
                display: block;
            }
            .hero {
                min-height: auto;
                padding: 40px 0 48px;
            }
            .hero h1 {
                font-size: 30px;
                line-height: 1.35;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .hero-cta {
                flex-direction: column;
                gap: 10px;
            }
            .hero-cta .btn {
                width: 100%;
            }
            .section {
                padding: 40px 0;
            }
            .section-heading h2 {
                font-size: 24px;
            }
            .container {
                padding: 0 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .stat-number {
                font-size: 28px;
            }
            .category-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .solution-block {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .flow-steps {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .capability-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .insight-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .article-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .guide-list {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .expert-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .about-content {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }
            .announcement-bar .container {
                font-size: 12px;
                padding: 0 12px;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .form-container {
                padding: 24px 18px;
            }
            .brand-logo {
                font-size: 18px;
            }
            .brand-logo .logo-mark {
                width: 30px;
                height: 30px;
                font-size: 15px;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 26px;
            }
            .hero-tag {
                font-size: 11px;
                padding: 4px 12px;
            }
            .hero-data-card {
                padding: 20px;
            }
            .hero-data-card .data-value {
                font-size: 32px;
            }
            .section-heading h2 {
                font-size: 22px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 6px;
            }
            .stat-item {
                padding: 10px 8px;
            }
            .stat-number {
                font-size: 24px;
            }
            .stat-label {
                font-size: 12px;
            }
            .flow-steps {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .scene-tag {
                font-size: 12px;
                padding: 6px 14px;
            }
            .btn {
                padding: 11px 20px;
                font-size: 14px;
            }
            .btn {
                width: 100%;
            }
            .hero-cta .btn,
            .cta-buttons .btn {
                width: 100%;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #17171A;
            --color-accent: #FF3B5C;
            --color-accent-dark: #E62E4C;
            --color-signal: #2FE6C8;
            --color-warm: #F5C451;
            --color-bg: #F6F7F9;
            --color-card: #FFFFFF;
            --color-dark: #202125;
            --color-text: #1D1D1F;
            --color-text-secondary: #55555A;
            --color-text-light: #8A8A8E;
            --color-border: #E5E5E8;
            --radius-card: 12px;
            --radius-btn: 24px;
            --radius-tag: 4px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --container-max: 1200px;
            --font-chinese: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --transition-base: 0.25s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        body {
            font-family: var(--font-chinese);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.85;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }
        a:hover,
        a:focus-visible {
            outline: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(255, 59, 92, 0.45);
            outline-offset: 2px;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: background-color var(--transition-base), color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: 16px;
            border: 1px solid var(--color-border);
            border-radius: 8px;
            background-color: #fff;
            padding: 10px 14px;
            width: 100%;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        input:focus,
        textarea:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(255, 59, 92, 0.1);
            outline: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        /* ========== Header 导航 ========== */
        .site-header {
            background-color: var(--color-primary);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .brand-logo .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-accent), var(--color-warm));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
        }
        .brand-logo span.logo-text-strong {
            color: var(--color-accent);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            color: rgba(255, 255, 255, 0.82);
            font-size: 15px;
            font-weight: 500;
            padding: 6px 0;
            position: relative;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background-color: var(--color-accent);
            transition: width var(--transition-base);
        }
        .nav-links a:hover {
            color: #fff;
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a.active {
            color: #fff;
            font-weight: 600;
        }
        .nav-links a.active::after {
            width: 100%;
            background-color: var(--color-accent);
        }
        /* 汉堡按钮 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
            cursor: pointer;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: #fff;
            transition: all var(--transition-base);
        }
        /* 移动端抽屉 */
        .mobile-menu {
            display: none;
            background-color: var(--color-primary);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 16px 24px 24px;
        }
        .mobile-menu ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .mobile-menu li {
            margin-bottom: 4px;
        }
        .mobile-menu a {
            display: block;
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-weight: 500;
        }
        .mobile-menu a.active {
            color: var(--color-accent);
            font-weight: 600;
        }
        .mobile-menu a:hover {
            color: #fff;
        }
        @media (max-width: 1024px) {
            .nav-links {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-menu.show {
                display: block;
            }
        }
        /* ========== 通用section ========== */
        .section {
            padding: 56px 0;
        }
        .section-alt {
            background-color: #fff;
        }
        .section-dark {
            background-color: var(--color-primary);
            color: #fff;
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
            line-height: 1.4;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--color-text-secondary);
            margin-bottom: 32px;
            max-width: 720px;
            line-height: 1.8;
        }
        /* ========== 面包屑 ========== */
        .breadcrumb-wrapper {
            background-color: #fff;
            border-bottom: 1px solid var(--color-border);
            padding: 12px 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-light);
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '>';
            color: var(--color-text-light);
            font-size: 12px;
        }
        .breadcrumb a {
            color: var(--color-text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--color-accent);
        }
        .breadcrumb .current {
            color: var(--color-accent);
            font-weight: 600;
        }
        /* ========== 分类H1区 ========== */
        .category-header {
            background-color: #fff;
            padding: 40px 0 32px;
            border-bottom: 1px solid var(--color-border);
        }
        .category-header .h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 16px;
            line-height: 1.4;
            letter-spacing: 0.3px;
        }
        .category-header .lead {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 800px;
            line-height: 1.85;
            margin-bottom: 0;
        }
        /* ========== 文章卡片列表 ========== */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 8px;
        }
        .article-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .article-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .article-card .card-image {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: #e0e0e0;
        }
        .article-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }
        .article-card:hover .card-image img {
            transform: scale(1.04);
        }
        .article-card .card-body {
            padding: 20px 20px 16px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .article-card .card-tag {
            display: inline-block;
            font-size: 12px;
            color: var(--color-accent);
            background-color: rgba(255, 59, 92, 0.08);
            padding: 2px 10px;
            border-radius: var(--radius-tag);
            margin-bottom: 10px;
            font-weight: 600;
            width: fit-content;
        }
        .article-card .card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
            line-height: 1.5;
            letter-spacing: 0.2px;
        }
        .article-card .card-summary {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
        }
        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--color-text-light);
            padding-top: 12px;
            border-top: 1px solid var(--color-border);
        }
        .article-card .card-meta .date {
            color: var(--color-text-light);
        }
        .article-card .card-meta .read-link {
            color: var(--color-accent);
            font-weight: 500;
            margin-left: auto;
        }
        .article-card .card-meta .read-link:hover {
            color: var(--color-accent-dark);
        }
        /* ========== 支撑板块通用 ========== */
        .support-section {
            padding: 48px 0;
        }
        .support-section .section-title {
            font-size: 24px;
            margin-bottom: 16px;
        }
        /* ========== 概念板块 ========== */
        .concept-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: start;
        }
        .concept-text {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.9;
        }
        .concept-text p {
            margin-bottom: 16px;
        }
        .concept-highlight {
            background-color: #fff;
            border-left: 4px solid var(--color-accent);
            padding: 16px 20px;
            border-radius: 8px;
            box-shadow: var(--shadow-card);
        }
        .concept-highlight h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
        }
        .concept-highlight p {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-bottom: 0;
            line-height: 1.7;
        }
        /* ========== 数据速览 ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            padding: 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }
        .stat-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .stat-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-accent);
            font-variant-numeric: tabular-nums;
            margin-bottom: 6px;
            letter-spacing: 0.5px;
        }
        .stat-label {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.5;
        }
        /* ========== 步骤清单 ========== */
        .checklist {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .checklist li {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 16px 18px;
            display: flex;
            align-items: flex-start;
            gap: 12px;
            box-shadow: var(--shadow-card);
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }
        .checklist li:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .checklist li .step-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background-color: rgba(47, 230, 200, 0.15);
            color: var(--color-signal);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            flex-shrink: 0;
            margin-top: 2px;
        }
        .checklist li strong {
            color: var(--color-text);
            font-weight: 600;
        }
        /* ========== 相关资源 ========== */
        .resource-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .resource-list li {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 16px 18px;
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: center;
            gap: 12px;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }
        .resource-list li:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .resource-list .resource-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--color-signal);
            flex-shrink: 0;
        }
        .resource-list a {
            color: var(--color-text);
            font-size: 15px;
            font-weight: 500;
            line-height: 1.6;
        }
        .resource-list a:hover {
            color: var(--color-accent);
        }
        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow var(--transition-base);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-hover);
        }
        .faq-question {
            padding: 18px 20px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            user-select: none;
            transition: background-color var(--transition-base);
        }
        .faq-question:hover {
            background-color: #fafafa;
        }
        .faq-question h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0;
            line-height: 1.6;
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background-color: rgba(47, 230, 200, 0.15);
            color: var(--color-signal);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
            transition: transform var(--transition-base);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background-color: rgba(255, 59, 92, 0.12);
            color: var(--color-accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 20px 18px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin: 0;
        }
        /* ========== CTA转化区 ========== */
        .cta-section {
            background-color: var(--color-primary);
            padding: 48px 0;
            text-align: center;
            color: #fff;
        }
        .cta-section .section-title {
            color: #fff;
            font-size: 26px;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.78);
            font-size: 15px;
            max-width: 560px;
            margin: 0 auto 24px;
            line-height: 1.8;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.5px;
            transition: all var(--transition-base);
            text-align: center;
            cursor: pointer;
            border: 2px solid transparent;
        }
        .btn-primary {
            background-color: var(--color-accent);
            color: #fff;
            border-color: var(--color-accent);
        }
        .btn-primary:hover {
            background-color: var(--color-accent-dark);
            border-color: var(--color-accent-dark);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: var(--color-text);
            border-color: var(--color-text);
        }
        .btn-outline:hover {
            background-color: var(--color-text);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.6);
        }
        .btn-outline-light:hover {
            background-color: #fff;
            color: var(--color-primary);
            transform: translateY(-2px);
        }
        .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .privacy-note {
            font-size: 12px;
            color: var(--color-text-light);
            margin-top: 12px;
            text-align: center;
        }
        /* ========== 表单样式 ========== */
        .consult-form-wrapper {
            background-color: #fff;
            border-radius: var(--radius-card);
            padding: 28px;
            max-width: 560px;
            margin: 0 auto;
            box-shadow: var(--shadow-card);
        }
        .form-group {
            margin-bottom: 16px;
            text-align: left;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text);
            margin-bottom: 6px;
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 10px 14px;
            border-radius: 8px;
            border: 1px solid var(--color-border);
            font-size: 15px;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(255, 59, 92, 0.1);
            outline: none;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        .form-submit {
            width: 100%;
            padding: 12px;
            background-color: var(--color-accent);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            letter-spacing: 0.5px;
            transition: background-color var(--transition-base), transform var(--transition-base);
        }
        .form-submit:hover {
            background-color: var(--color-accent-dark);
            transform: translateY(-2px);
        }
        /* ========== Footer ========== */
        .site-footer {
            background-color: var(--color-primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .footer-brand h3 .highlight {
            color: var(--color-accent);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col li {
            margin-bottom: 8px;
        }
        .footer-col a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: color var(--transition-base);
        }
        .footer-col a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            text-align: center;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition-base);
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }
        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .checklist {
                grid-template-columns: 1fr;
            }
            .resource-list {
                grid-template-columns: 1fr;
            }
            .concept-content {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .article-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .checklist {
                grid-template-columns: 1fr;
            }
            .resource-list {
                grid-template-columns: 1fr;
            }
            .section {
                padding: 36px 0;
            }
            .category-header .h1 {
                font-size: 28px;
            }
            .section-title {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                max-width: 320px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .category-header .h1 {
                font-size: 24px;
            }
            .section-title {
                font-size: 20px;
            }
            .stat-number {
                font-size: 26px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
            }
            .consult-form-wrapper {
                padding: 20px;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #17171A;
            --color-accent: #FF3B5C;
            --color-accent-dark: #E62E4C;
            --color-signal: #2FE6C8;
            --color-warm: #F5C451;
            --color-bg: #F6F7F9;
            --color-card: #FFFFFF;
            --color-dark: #202125;
            --color-text: #1D1D1F;
            --color-text-secondary: #55555A;
            --color-text-light: #8A8A8E;
            --color-border: #E5E5E8;
            --radius-card: 12px;
            --radius-btn: 24px;
            --radius-tag: 4px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --container-max: 1200px;
            --font-chinese: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --transition-base: 0.25s ease;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-chinese);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.85;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }

        a:hover,
        a:focus-visible {
            outline: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(255, 59, 92, 0.45);
            outline-offset: 2px;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: background-color var(--transition-base), color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: 16px;
            border: 1px solid var(--color-border);
            border-radius: 8px;
            background-color: #fff;
            padding: 10px 14px;
            width: 100%;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        input:focus,
        textarea:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(255, 59, 92, 0.1);
            outline: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* Header */
        .site-header {
            background-color: var(--color-primary);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .brand-logo .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-accent), var(--color-warm));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
        }

        .brand-logo span.logo-text-strong {
            color: var(--color-accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: rgba(255, 255, 255, 0.82);
            font-size: 15px;
            font-weight: 500;
            padding: 6px 0;
            position: relative;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background-color: var(--color-accent);
            transition: width var(--transition-base);
        }

        .nav-links a:hover {
            color: #fff;
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-links a.active {
            color: #fff;
            font-weight: 600;
        }

        .nav-links a.active::after {
            width: 100%;
            background-color: var(--color-accent);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
            cursor: pointer;
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: #fff;
            border-radius: 2px;
            transition: background-color var(--transition-base), transform var(--transition-base);
        }

        /* Mobile drawer */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            background-color: var(--color-primary);
            z-index: 999;
            padding: 16px 24px 24px;
            flex-direction: column;
            gap: 4px;
            border-bottom: 2px solid var(--color-accent);
        }

        .mobile-drawer.open {
            display: flex;
        }

        .mobile-drawer a {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            font-weight: 500;
            padding: 12px 4px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            display: block;
        }

        .mobile-drawer a:hover,
        .mobile-drawer a.active {
            color: #fff;
            padding-left: 12px;
        }

        .mobile-drawer a.active {
            color: var(--color-accent);
            font-weight: 600;
        }

        /* Breadcrumb */
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            margin-bottom: 12px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
        }

        .breadcrumb-nav a {
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
        }

        .breadcrumb-nav a:hover {
            color: #fff;
            text-decoration: underline;
        }

        .breadcrumb-nav .separator {
            color: rgba(255, 255, 255, 0.4);
        }

        .breadcrumb-nav .current {
            color: var(--color-accent);
            font-weight: 600;
        }

        /* Section base */
        .section {
            padding: 56px 0;
        }

        .section-alt {
            background-color: #fff;
        }

        .section-dark {
            background-color: var(--color-primary);
            color: rgba(255, 255, 255, 0.85);
        }

        .section-caption {
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 1px;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: 8px;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .section-title.light {
            color: #fff;
        }

        .section-lead {
            font-size: 16px;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.85;
            margin-bottom: 32px;
        }

        /* H1 banner */
        .page-banner {
            background-image: linear-gradient(rgba(23, 23, 26, 0.75), rgba(23, 23, 26, 0.85)), url('/assets/images/cae5a8a44957ddd1.jpg');
            background-size: cover;
            background-position: center;
            padding: 48px 0 40px;
            min-height: 180px;
            display: flex;
            align-items: flex-end;
            position: relative;
        }

        .page-banner .container {
            position: relative;
            z-index: 1;
        }

        .page-banner h1 {
            font-size: 36px;
            font-weight: 700;
            color: #fff;
            margin: 8px 0 12px;
            line-height: 1.35;
            letter-spacing: 0.5px;
        }

        .page-banner .banner-desc {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 760px;
            line-height: 1.85;
            margin-bottom: 0;
        }

        /* Article cards */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .article-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .article-card .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background-color: #ddd;
            position: relative;
        }

        .article-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .article-card:hover .card-img img {
            transform: scale(1.06);
        }

        .article-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .article-card .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            background-color: rgba(255, 59, 92, 0.1);
            color: var(--color-accent);
            margin-bottom: 10px;
            align-self: flex-start;
        }

        .article-card .card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.5;
            margin-bottom: 10px;
            transition: color var(--transition-base);
        }

        .article-card .card-title a:hover {
            color: var(--color-accent);
        }

        .article-card .card-summary {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin-bottom: 14px;
            flex: 1;
        }

        .article-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--color-text-light);
            padding-top: 12px;
            border-top: 1px solid var(--color-border);
        }

        .article-card .card-meta .date {
            font-variant-numeric: tabular-nums;
        }

        .article-card .card-meta .read-link {
            color: var(--color-accent);
            font-weight: 500;
            font-size: 13px;
        }

        .article-card .card-meta .read-link:hover {
            color: var(--color-accent-dark);
            text-decoration: underline;
        }

        /* Support blocks */
        .concept-block {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card);
            border-left: 4px solid var(--color-signal);
        }

        .concept-block h2 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--color-text);
        }

        .concept-block p {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.9;
            margin-bottom: 12px;
        }

        .concept-block p:last-child {
            margin-bottom: 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-item {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

        .stat-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .stat-item .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-accent);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-item .stat-number.stat-signal {
            color: var(--color-signal);
        }

        .stat-item .stat-number.stat-warm {
            color: var(--color-warm);
        }

        .stat-item .stat-label {
            font-size: 14px;
            color: var(--color-text-secondary);
            font-weight: 500;
        }

        .steps-list {
            list-style: none;
            padding: 0;
            margin: 0;
            counter-reset: step;
        }

        .steps-list li {
            counter-increment: step;
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 18px 0;
            border-bottom: 1px solid var(--color-border);
        }

        .steps-list li:last-child {
            border-bottom: none;
        }

        .steps-list li::before {
            content: counter(step);
            width: 32px;
            height: 32px;
            min-width: 32px;
            border-radius: 50%;
            background-color: var(--color-accent);
            color: #fff;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            margin-top: 4px;
        }

        .steps-list .step-content h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--color-text);
        }

        .steps-list .step-content p {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.8;
        }

        .resource-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        .resource-list li a {
            display: flex;
            align-items: center;
            gap: 10px;
            background: #fff;
            border-radius: var(--radius-card);
            padding: 18px 20px;
            box-shadow: var(--shadow-card);
            font-weight: 500;
            color: var(--color-text);
            transition: transform var(--transition-base), box-shadow var(--transition-base), color var(--transition-base);
        }

        .resource-list li a:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            color: var(--color-accent);
        }

        .resource-list li a .arrow {
            color: var(--color-accent);
            font-weight: 700;
            flex-shrink: 0;
        }

        /* FAQ */
        .faq-wrapper {
            max-width: 840px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius-card);
            margin-bottom: 16px;
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow var(--transition-base);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-hover);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            width: 100%;
            text-align: left;
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            background: none;
            border: none;
            transition: color var(--transition-base);
        }

        .faq-question:hover {
            color: var(--color-accent);
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            min-width: 28px;
            border-radius: 50%;
            background-color: var(--color-signal);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            transition: transform var(--transition-base), background-color var(--transition-base);
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            background-color: var(--color-accent);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin: 0;
        }

        /* CTA section */
        .cta-section {
            background-color: var(--color-primary);
            padding: 64px 0;
            border-radius: 0;
        }

        .cta-inner {
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-inner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 28px;
            line-height: 1.8;
        }

        .btn-primary {
            display: inline-block;
            background-color: var(--color-accent);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            padding: 14px 36px;
            border-radius: var(--radius-btn);
            transition: background-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
            text-align: center;
        }

        .btn-primary:hover {
            background-color: var(--color-accent-dark);
            transform: translateY(-2px);
            color: #fff;
            box-shadow: 0 6px 18px rgba(255, 59, 92, 0.3);
        }

        .btn-outline {
            display: inline-block;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.6);
            font-weight: 600;
            font-size: 16px;
            padding: 12px 32px;
            border-radius: var(--radius-btn);
            transition: background-color var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
        }

        .btn-outline:hover {
            background-color: #fff;
            color: var(--color-primary);
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-primary);
            color: rgba(255, 255, 255, 0.8);
            padding: 64px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            align-items: start;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-brand h3 .highlight {
            color: var(--color-accent);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            transition: color var(--transition-base);
        }

        .footer-col ul li a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            justify-content: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
        }

        .footer-bottom a:hover {
            color: var(--color-signal);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hamburger {
                display: flex;
            }

            .nav-links {
                display: none;
            }

            .mobile-drawer {
                display: none;
            }

            .mobile-drawer.open {
                display: flex;
            }

            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .resource-list {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 36px 0;
            }

            .page-banner {
                min-height: 140px;
                padding: 32px 0 28px;
            }

            .page-banner h1 {
                font-size: 26px;
            }

            .page-banner .banner-desc {
                font-size: 14px;
            }

            .article-grid {
                grid-template-columns: 1fr;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .concept-block {
                padding: 20px;
            }

            .cta-inner h2 {
                font-size: 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .page-banner {
                min-height: 120px;
                padding: 24px 0 20px;
            }

            .page-banner h1 {
                font-size: 22px;
            }

            .section-title {
                font-size: 22px;
            }

            .stats-grid {
                grid-template-columns: 1fr;
            }

            .btn-primary,
            .btn-outline {
                width: 100%;
                padding: 12px 20px;
                font-size: 15px;
            }

            .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #17171A;
            --color-accent: #FF3B5C;
            --color-accent-dark: #E62E4C;
            --color-signal: #2FE6C8;
            --color-warm: #F5C451;
            --color-bg: #F6F7F9;
            --color-card: #FFFFFF;
            --color-dark: #202125;
            --color-text: #1D1D1F;
            --color-text-secondary: #55555A;
            --color-text-light: #8A8A8E;
            --color-border: #E5E5E8;
            --radius-card: 12px;
            --radius-btn: 24px;
            --radius-tag: 4px;
            --shadow-card: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-hover: 0 8px 24px rgba(0,0,0,0.12);
            --container-max: 1200px;
            --font-chinese: 'PingFang SC','Microsoft YaHei','Noto Sans CJK SC',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
            --transition-base: 0.25s ease;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-chinese);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.85;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }

        a:hover,
        a:focus-visible {
            outline: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(255,59,92,0.45);
            outline-offset: 2px;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: background-color var(--transition-base), color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: 16px;
            border: 1px solid var(--color-border);
            border-radius: 8px;
            background-color: #fff;
            padding: 10px 14px;
            width: 100%;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        input:focus,
        textarea:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(255,59,92,0.1);
            outline: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* Header 导航 */
        .site-header {
            background-color: var(--color-primary);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .brand-logo .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-accent), var(--color-warm));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
        }

        .brand-logo span.logo-text-strong {
            color: var(--color-accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 26px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: rgba(255,255,255,0.82);
            font-size: 15px;
            font-weight: 500;
            padding: 6px 0;
            position: relative;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background-color: var(--color-accent);
            transition: width var(--transition-base);
        }

        .nav-links a:hover {
            color: #fff;
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-links a.active {
            color: #fff;
            font-weight: 600;
        }

        .nav-links a.active::after {
            width: 100%;
            background-color: var(--color-accent);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
            cursor: pointer;
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: #fff;
            border-radius: 2px;
            transition: transform var(--transition-base), opacity var(--transition-base);
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* 面包屑 */
        .breadcrumb-section {
            background-color: var(--color-card);
            border-bottom: 1px solid var(--color-border);
            padding: 12px 0;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-light);
            flex-wrap: wrap;
        }

        .breadcrumb-nav a {
            color: var(--color-text-secondary);
            transition: color var(--transition-base);
        }

        .breadcrumb-nav a:hover {
            color: var(--color-accent);
        }

        .breadcrumb-nav .separator {
            color: var(--color-border);
            user-select: none;
        }

        .breadcrumb-nav .current {
            color: var(--color-accent);
            font-weight: 600;
        }

        /* H1 区 */
        .page-hero {
            position: relative;
            height: 180px;
            display: flex;
            align-items: center;
            background: var(--color-primary);
            overflow: hidden;
        }

        .page-hero .hero-bg {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.35;
        }

        .page-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(23,23,26,0.55) 0%, rgba(23,23,26,0.75) 100%);
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .page-hero h1 {
            color: #fff;
            font-size: 36px;
            font-weight: 700;
            letter-spacing: 1px;
            margin: 0;
            line-height: 1.35;
        }

        .page-hero .hero-subtitle {
            color: rgba(255,255,255,0.85);
            font-size: 16px;
            margin-top: 8px;
            max-width: 680px;
            line-height: 1.7;
        }

        /* 通用 section */
        .section {
            padding: 56px 0;
        }

        .section-alt {
            background-color: var(--color-card);
        }

        .section-dark {
            background-color: var(--color-primary);
            color: #fff;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            line-height: 1.4;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--color-text-secondary);
            margin-bottom: 32px;
            max-width: 720px;
            line-height: 1.8;
        }

        .section-dark .section-title {
            color: #fff;
        }

        .section-dark .section-subtitle {
            color: rgba(255,255,255,0.75);
        }

        /* 卡片 */
        .article-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-base), transform var(--transition-base);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .article-card .card-img-wrapper {
            position: relative;
            width: 100%;
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: var(--color-dark);
        }

        .article-card .card-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }

        .article-card:hover .card-img-wrapper img {
            transform: scale(1.06);
        }

        .article-card .card-body {
            padding: 20px 20px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .article-card .card-tag {
            display: inline-block;
            background: rgba(47,230,200,0.12);
            color: #0E9F87;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            margin-bottom: 10px;
            align-self: flex-start;
        }

        .article-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.5;
            margin: 0 0 8px;
        }

        .article-card .card-excerpt {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0 0 16px;
            flex: 1;
        }

        .article-card .card-meta {
            font-size: 13px;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--color-border);
            padding-top: 14px;
        }

        .article-card .card-meta .dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--color-border);
        }

        /* 查看更多链接 */
        .view-more-wrapper {
            text-align: center;
            margin-top: 32px;
        }

        .view-more-link {
            display: inline-block;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-accent);
            padding: 10px 22px;
            border: 2px solid var(--color-accent);
            border-radius: var(--radius-btn);
            transition: background-color var(--transition-base), color var(--transition-base), transform var(--transition-base);
        }

        .view-more-link:hover {
            background-color: var(--color-accent);
            color: #fff;
            transform: translateY(-1px);
        }

        /* 概念板块 */
        .concept-block {
            background: var(--color-card);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card);
            border-left: 4px solid var(--color-accent);
        }

        .concept-block p {
            color: var(--color-text-secondary);
            line-height: 1.9;
            margin-bottom: 16px;
        }

        .concept-block p:last-child {
            margin-bottom: 0;
        }

        /* 数据速览 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

        .stat-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .stat-card .stat-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-accent);
            font-variant-numeric: tabular-nums;
            line-height: 1.3;
        }

        .stat-card .stat-number .signal {
            color: var(--color-signal);
        }

        .stat-card .stat-label {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-top: 6px;
        }

        /* 操作步骤 */
        .steps-list {
            list-style: none;
            padding: 0;
            margin: 0;
            counter-reset: step-counter;
        }

        .steps-list li {
            position: relative;
            padding-left: 64px;
            margin-bottom: 28px;
            counter-increment: step-counter;
        }

        .steps-list li:last-child {
            margin-bottom: 0;
        }

        .steps-list li::before {
            content: counter(step-counter);
            position: absolute;
            left: 0;
            top: 2px;
            width: 44px;
            height: 44px;
            background: var(--color-accent);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-variant-numeric: tabular-nums;
        }

        .steps-list h4 {
            font-size: 18px;
            font-weight: 600;
            margin: 0 0 6px;
            color: var(--color-text);
        }

        .steps-list p {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.8;
        }

        /* 资源列表 */
        .resource-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .resource-list li {
            background: var(--color-card);
            border-radius: 8px;
            padding: 16px 20px;
            box-shadow: var(--shadow-card);
            border-left: 3px solid var(--color-signal);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

        .resource-list li:hover {
            transform: translateX(4px);
            box-shadow: var(--shadow-hover);
        }

        .resource-list a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
        }

        .resource-list a:hover {
            color: var(--color-accent);
        }

        .resource-list .resource-icon {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-signal);
            flex-shrink: 0;
        }

        /* FAQ */
        .faq-wrapper {
            max-width: 780px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--color-card);
            border-radius: var(--radius-card);
            margin-bottom: 14px;
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow var(--transition-base);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-hover);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            background: none;
            border: none;
            cursor: pointer;
            transition: color var(--transition-base);
        }

        .faq-question:hover {
            color: var(--color-accent);
        }

        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(47,230,200,0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            color: var(--color-signal);
            flex-shrink: 0;
            transition: transform var(--transition-base), background-color var(--transition-base), color var(--transition-base);
        }

        .faq-item.active .faq-question .faq-icon {
            background: var(--color-signal);
            color: var(--color-primary);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.35s ease;
            padding: 0 22px;
        }

        .faq-item.active .faq-answer {
            max-height: 500px;
            padding: 0 22px 20px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin: 0;
            padding-top: 14px;
            border-top: 1px solid var(--color-border);
        }

        /* CTA 区域 */
        .cta-section {
            background: var(--color-primary);
            color: #fff;
            text-align: center;
            padding: 56px 0;
        }

        .cta-section .cta-title {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }

        .cta-section .cta-text {
            font-size: 16px;
            color: rgba(255,255,255,0.8);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-primary {
            background-color: var(--color-accent);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            padding: 13px 32px;
            border-radius: var(--radius-btn);
            border: 2px solid var(--color-accent);
            transition: background-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }

        .btn-primary:hover {
            background-color: var(--color-accent-dark);
            border-color: var(--color-accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(255,59,92,0.35);
            color: #fff;
        }

        .btn-outline-light {
            background-color: transparent;
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            padding: 13px 32px;
            border-radius: var(--radius-btn);
            border: 2px solid rgba(255,255,255,0.5);
            transition: background-color var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
        }

        .btn-outline-light:hover {
            background-color: #fff;
            color: var(--color-primary);
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* 表单 */
        .form-section {
            background: #F0F1F4;
        }

        .form-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            padding: 36px;
            box-shadow: var(--shadow-card);
            max-width: 580px;
            margin: 0 auto;
        }

        .form-card h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--color-text);
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--color-text);
        }

        .form-card .btn-primary {
            width: 100%;
            margin-top: 8px;
        }

        .form-privacy {
            font-size: 12px;
            color: var(--color-text-light);
            text-align: center;
            margin-top: 12px;
        }

        /* 标签 */
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .tag-list li {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: 20px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: border-color var(--transition-base), color var(--transition-base), background-color var(--transition-base);
        }

        .tag-list li:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: rgba(255,59,92,0.04);
        }

        /* 页脚 */
        .site-footer {
            background-color: var(--color-primary);
            color: rgba(255,255,255,0.75);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .footer-brand h3 .highlight {
            color: var(--color-accent);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255,255,255,0.65);
            margin: 0;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: rgba(255,255,255,0.65);
            font-size: 14px;
            transition: color var(--transition-base);
        }

        .footer-col ul li a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            font-size: 13px;
            color: rgba(255,255,255,0.5);
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: space-between;
        }

        .footer-bottom a {
            color: rgba(255,255,255,0.55);
            transition: color var(--transition-base);
        }

        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 18px;
            }

            .nav-links a {
                font-size: 14px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .page-hero h1 {
                font-size: 30px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .nav-wrapper {
                height: 60px;
            }

            .brand-logo {
                font-size: 18px;
            }

            .brand-logo .logo-mark {
                width: 30px;
                height: 30px;
                font-size: 15px;
            }

            .hamburger {
                display: flex;
            }

            .nav-links {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: var(--color-primary);
                flex-direction: column;
                align-items: flex-start;
                padding: 20px 24px 28px;
                gap: 14px;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.4s ease, padding 0.35s ease;
                border-bottom: 1px solid rgba(255,255,255,0.08);
                box-shadow: 0 12px 30px rgba(0,0,0,0.25);
                z-index: 999;
                padding-top: 0;
                padding-bottom: 0;
            }

            .nav-links.open {
                max-height: 460px;
                padding: 20px 24px 28px;
            }

            .nav-links a {
                font-size: 16px;
                width: 100%;
                padding: 8px 0;
            }

            .nav-links a.active::after {
                width: 40px;
            }

            .page-hero {
                height: 150px;
            }

            .page-hero h1 {
                font-size: 24px;
                line-height: 1.45;
            }

            .page-hero .hero-subtitle {
                font-size: 14px;
                margin-top: 6px;
            }

            .section {
                padding: 36px 0;
            }

            .section-title {
                font-size: 22px;
            }

            .concept-block {
                padding: 22px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-card .stat-number {
                font-size: 26px;
            }

            .cta-section .cta-title {
                font-size: 22px;
            }

            .form-card {
                padding: 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .nav-wrapper {
                height: 56px;
            }

            .breadcrumb-nav {
                font-size: 12px;
            }

            .page-hero {
                height: 130px;
            }

            .page-hero h1 {
                font-size: 20px;
            }

            .page-hero .hero-subtitle {
                font-size: 13px;
                line-height: 1.6;
            }

            .section {
                padding: 28px 0;
            }

            .section-title {
                font-size: 20px;
            }

            .stats-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }

            .stat-card {
                padding: 16px;
            }

            .stat-card .stat-number {
                font-size: 24px;
            }

            .steps-list li {
                padding-left: 50px;
            }

            .steps-list li::before {
                width: 36px;
                height: 36px;
                font-size: 15px;
            }

            .btn-primary,
            .btn-outline-light {
                padding: 11px 22px;
                font-size: 14px;
                width: 100%;
                text-align: center;
            }

            .cta-buttons {
                flex-direction: column;
                width: 100%;
            }

            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }

            .faq-answer p {
                font-size: 14px;
            }

            .form-card {
                padding: 18px;
            }

            .resource-list li {
                padding: 12px 16px;
            }

            .footer-col h4 {
                font-size: 14px;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #17171A;
            --color-accent: #FF3B5C;
            --color-accent-dark: #E62E4C;
            --color-signal: #2FE6C8;
            --color-warm: #F5C451;
            --color-bg: #F6F7F9;
            --color-card: #FFFFFF;
            --color-dark: #202125;
            --color-text: #1D1D1F;
            --color-text-secondary: #55555A;
            --color-text-light: #8A8A8E;
            --color-border: #E5E5E8;
            --radius-card: 12px;
            --radius-btn: 24px;
            --radius-tag: 4px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --container-max: 1200px;
            --font-chinese: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --transition-base: 0.25s ease;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-chinese);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.85;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }

        a:hover,
        a:focus-visible {
            outline: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(255, 59, 92, 0.45);
            outline-offset: 2px;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: background-color var(--transition-base), color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: 16px;
            border: 1px solid var(--color-border);
            border-radius: 8px;
            background-color: #fff;
            padding: 10px 14px;
            width: 100%;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        input:focus,
        textarea:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(255, 59, 92, 0.1);
            outline: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        section {
            padding: 64px 0;
        }

        section:nth-child(even):not(.category-banner):not(.cta-section) {
            background-color: #fff;
        }

        section:nth-child(odd):not(.category-banner):not(.cta-section) {
            background-color: var(--color-bg);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            color: var(--color-accent);
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-label::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: var(--color-signal);
            flex-shrink: 0;
        }

        h1, h2, h3, h4 {
            color: var(--color-primary);
            font-weight: 700;
            line-height: 1.4;
            margin-top: 0;
        }

        h1 {
            font-size: 40px;
        }

        h2 {
            font-size: 30px;
            margin-bottom: 20px;
        }

        h3 {
            font-size: 22px;
            margin-bottom: 12px;
        }

        h4 {
            font-size: 17px;
            margin-bottom: 10px;
        }

        p {
            margin: 0 0 16px;
            color: var(--color-text-secondary);
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }

        /* ========== Header 导航 ========== */
        .site-header {
            background-color: var(--color-primary);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .brand-logo .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-accent), var(--color-warm));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
        }

        .brand-logo span.logo-text-strong {
            color: var(--color-accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: rgba(255, 255, 255, 0.82);
            font-size: 15px;
            font-weight: 500;
            padding: 6px 0;
            position: relative;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background-color: var(--color-accent);
            transition: width var(--transition-base);
        }

        .nav-links a:hover {
            color: #fff;
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-links a.active {
            color: #fff;
            font-weight: 600;
        }

        .nav-links a.active::after {
            width: 100%;
            background-color: var(--color-accent);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
            cursor: pointer;
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: #fff;
            border-radius: 2px;
            transition: transform var(--transition-base), opacity var(--transition-base);
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ========== Breadcrumb / Category Banner ========== */
        .category-banner {
            padding: 32px 0 28px;
            background-color: var(--color-primary);
            background-image: url('/assets/images/12bbaa8a6ddbc32d.jpg');
            background-size: cover;
            background-position: center;
            position: relative;
            min-height: 170px;
            display: flex;
            align-items: flex-end;
            overflow: hidden;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(23, 23, 26, 0.72) 0%, rgba(23, 23, 26, 0.88) 100%);
            z-index: 1;
        }

        .category-banner .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            padding: 0;
            margin: 0 0 10px;
            font-size: 14px;
            flex-wrap: wrap;
        }

        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.7);
        }

        .breadcrumb li:not(:last-child)::after {
            content: '>';
            color: rgba(255, 255, 255, 0.4);
            font-size: 12px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color var(--transition-base);
        }

        .breadcrumb a:hover {
            color: var(--color-signal);
        }

        .breadcrumb li:last-child {
            color: #fff;
            font-weight: 500;
        }

        .category-title {
            font-size: 32px;
            color: #fff;
            margin-bottom: 6px;
        }

        .category-intro {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 720px;
            margin-bottom: 0;
        }

        /* ========== Article List ========== */
        .article-list-section {
            background-color: var(--color-bg);
        }

        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .article-card {
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .article-card .article-img-link {
            display: block;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background-color: #f0f0f0;
        }

        .article-card .article-img-link img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .article-card:hover .article-img-link img {
            transform: scale(1.04);
        }

        .article-card .article-body {
            padding: 20px 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .article-card .article-title-link {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-primary);
            line-height: 1.5;
            margin-bottom: 8px;
            display: block;
            transition: color var(--transition-base);
        }

        .article-card .article-title-link:hover {
            color: var(--color-accent);
        }

        .article-card .article-summary {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
        }

        .article-card .article-meta-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--color-text-light);
        }

        .article-tag {
            display: inline-block;
            padding: 3px 10px;
            font-size: 12px;
            font-weight: 500;
            color: var(--color-accent-dark);
            background-color: rgba(255, 59, 92, 0.08);
            border-radius: var(--radius-tag);
            white-space: nowrap;
        }

        /* ========== Concept Section ========== */
        .concept-section {
            background-color: #fff;
        }

        .concept-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: start;
        }

        .concept-content .concept-text {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.9;
        }

        .concept-content .concept-text p {
            color: var(--color-text-secondary);
        }

        .concept-highlight-box {
            background-color: var(--color-bg);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            border-left: 4px solid var(--color-signal);
        }

        .concept-highlight-box h3 {
            font-size: 18px;
            margin-bottom: 10px;
            color: var(--color-primary);
        }

        .concept-highlight-box ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .concept-highlight-box ul li {
            padding: 8px 0;
            font-size: 14px;
            color: var(--color-text-secondary);
            border-bottom: 1px solid var(--color-border);
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }

        .concept-highlight-box ul li:last-child {
            border-bottom: none;
        }

        .concept-highlight-box ul li::before {
            content: '✓';
            color: var(--color-signal);
            font-weight: 700;
            flex-shrink: 0;
        }

        /* ========== Stats Section ========== */
        .stats-section {
            background-color: var(--color-primary);
            color: #fff;
        }

        .stats-section h2 {
            color: #fff;
        }

        .stats-section .section-label {
            color: var(--color-signal);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-item {
            background-color: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            transition: border-color var(--transition-base), background-color var(--transition-base);
        }

        .stat-item:hover {
            border-color: var(--color-signal);
            background-color: rgba(255, 255, 255, 0.1);
        }

        .stat-number {
            font-size: 36px;
            font-weight: 700;
            font-variant-numeric: tabular-nums;
            color: var(--color-signal);
            margin-bottom: 6px;
            letter-spacing: -0.5px;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
        }

        /* ========== Steps Section ========== */
        .steps-section {
            background-color: var(--color-bg);
        }

        .steps-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        .step-item {
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            padding: 24px 22px;
            box-shadow: var(--shadow-card);
            border-top: 3px solid var(--color-accent);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

        .step-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .step-item .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background-color: var(--color-accent);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 14px;
            flex-shrink: 0;
        }

        .step-item h3 {
            font-size: 18px;
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-bottom: 0;
        }

        /* ========== Resource Section ========== */
        .resource-section {
            background-color: #fff;
        }

        .resource-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .resource-item {
            background-color: var(--color-bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
        }

        .resource-item:hover {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-card);
            transform: translateY(-1px);
        }

        .resource-item a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 20px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-primary);
        }

        .resource-item a:hover {
            color: var(--color-accent);
        }

        .resource-item .resource-arrow {
            color: var(--color-accent);
            font-weight: 700;
            flex-shrink: 0;
        }

        /* ========== FAQ Section ========== */
        .faq-section {
            background-color: var(--color-bg);
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background-color: var(--color-card);
            border-radius: var(--radius-card);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--color-signal);
        }

        .faq-item.active {
            border-color: var(--color-signal);
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition-base);
        }

        .faq-question:hover {
            color: var(--color-accent);
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background-color: var(--color-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-signal);
            font-weight: 700;
            flex-shrink: 0;
            transition: transform var(--transition-base), background-color var(--transition-base), color var(--transition-base);
        }

        .faq-item.active .faq-question .faq-icon {
            transform: rotate(45deg);
            background-color: var(--color-signal);
            color: var(--color-primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.85;
        }

        /* ========== CTA Section ========== */
        .cta-section {
            background-color: var(--color-primary);
            padding: 56px 0;
        }

        .cta-wrapper {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 40px;
            align-items: center;
        }

        .cta-info h2 {
            color: #fff;
            font-size: 28px;
            margin-bottom: 12px;
        }

        .cta-info p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            margin-bottom: 0;
        }

        .cta-form-box {
            background-color: #fff;
            border-radius: var(--radius-card);
            padding: 28px 30px;
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
        }

        .cta-form-box h3 {
            font-size: 19px;
            margin-bottom: 18px;
            color: var(--color-primary);
        }

        .form-field {
            margin-bottom: 14px;
        }

        .form-field label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text-secondary);
            margin-bottom: 5px;
        }

        .form-field input,
        .form-field textarea {
            font-size: 15px;
            padding: 11px 14px;
            border-radius: 8px;
            border: 1px solid var(--color-border);
            background-color: #fafafa;
            transition: border-color var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base);
        }

        .form-field input:focus,
        .form-field textarea:focus {
            border-color: var(--color-accent);
            background-color: #fff;
            box-shadow: 0 0 0 3px rgba(255, 59, 92, 0.1);
            outline: none;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 32px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            background-color: var(--color-accent);
            color: #fff;
            border: none;
            cursor: pointer;
            transition: background-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
            letter-spacing: 0.5px;
        }

        .btn-primary:hover {
            background-color: var(--color-accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(255, 59, 92, 0.35);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            background-color: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
            cursor: pointer;
            transition: background-color var(--transition-base), color var(--transition-base), transform var(--transition-base);
        }

        .btn-secondary:hover {
            background-color: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .privacy-note {
            font-size: 12px;
            color: var(--color-text-light);
            margin-top: 10px;
            margin-bottom: 0;
        }

        /* ========== Footer ========== */
        .site-footer {
            background-color: var(--color-primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            color: #fff;
            font-size: 22px;
            margin-bottom: 12px;
            font-weight: 700;
        }

        .footer-brand h3 .highlight {
            color: var(--color-accent);
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 0;
            max-width: 320px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition-base);
        }

        .footer-col ul li a:hover {
            color: var(--color-signal);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px 20px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition-base);
        }

        .footer-bottom a:hover {
            color: var(--color-signal);
        }

        .footer-bottom span {
            white-space: nowrap;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 20px;
            }

            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .steps-list {
                grid-template-columns: repeat(2, 1fr);
            }

            .concept-content {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .cta-wrapper {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            h1 {
                font-size: 34px;
            }

            h2 {
                font-size: 26px;
            }
        }

        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }

            .nav-links {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                flex-direction: column;
                background-color: var(--color-primary);
                padding: 20px 24px;
                gap: 0;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.35s ease;
                z-index: 999;
                border-top: 1px solid rgba(255, 255, 255, 0.1);
                align-items: flex-start;
            }

            .nav-links.open {
                max-height: 400px;
            }

            .nav-links li {
                width: 100%;
            }

            .nav-links a {
                display: block;
                padding: 12px 0;
                font-size: 16px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }

            .nav-links li:last-child a {
                border-bottom: none;
            }

            .nav-links a::after {
                display: none;
            }

            .article-grid {
                grid-template-columns: 1fr;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .steps-list {
                grid-template-columns: 1fr;
            }

            .resource-list {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .category-banner {
                min-height: 150px;
                padding: 24px 0 20px;
            }

            .category-title {
                font-size: 26px;
            }

            h1 {
                font-size: 30px;
            }

            h2 {
                font-size: 24px;
            }

            section {
                padding: 44px 0;
            }

            .cta-form-box {
                padding: 22px 20px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .stats-grid {
                grid-template-columns: 1fr;
            }

            .stat-number {
                font-size: 30px;
            }

            .brand-logo {
                font-size: 19px;
            }

            .brand-logo .logo-mark {
                width: 30px;
                height: 30px;
                font-size: 15px;
                border-radius: 8px;
            }

            .category-title {
                font-size: 22px;
            }

            .category-intro {
                font-size: 14px;
            }

            .article-card .article-body {
                padding: 16px 16px 18px;
            }

            .article-card .article-title-link {
                font-size: 15px;
            }

            h1 {
                font-size: 26px;
            }

            h2 {
                font-size: 21px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

/* roulang page: category5 */
:root {
            --color-primary: #17171A;
            --color-accent: #FF3B5C;
            --color-accent-dark: #E62E4C;
            --color-signal: #2FE6C8;
            --color-warm: #F5C451;
            --color-bg: #F6F7F9;
            --color-card: #FFFFFF;
            --color-dark: #202125;
            --color-text: #1D1D1F;
            --color-text-secondary: #55555A;
            --color-text-light: #8A8A8E;
            --color-border: #E5E5E8;
            --radius-card: 12px;
            --radius-btn: 24px;
            --radius-tag: 4px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --container-max: 1200px;
            --font-chinese: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --transition-base: 0.25s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-chinese);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.85;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }
        a:hover,
        a:focus-visible {
            outline: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(255, 59, 92, 0.45);
            outline-offset: 2px;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: background-color var(--transition-base), color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: 16px;
            border: 1px solid var(--color-border);
            border-radius: 8px;
            background-color: #fff;
            padding: 10px 14px;
            width: 100%;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        input:focus,
        textarea:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(255, 59, 92, 0.1);
            outline: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        .announcement-bar .container {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            text-align: center;
        }
        .announcement-bar a {
            color: var(--color-signal);
            font-weight: 600;
            margin-left: 4px;
        }
        .announcement-bar a:hover {
            color: #fff;
            text-decoration: underline;
        }
        /* ========== Header 导航 ========== */
        .site-header {
            background-color: var(--color-primary);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .brand-logo .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-accent), var(--color-warm));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
        }
        .brand-logo span.logo-text-strong {
            color: var(--color-accent);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            color: rgba(255, 255, 255, 0.82);
            font-size: 15px;
            font-weight: 500;
            padding: 6px 0;
            position: relative;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background-color: var(--color-accent);
            transition: width var(--transition-base);
        }
        .nav-links a:hover {
            color: #fff;
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a.active {
            color: #fff;
            font-weight: 600;
        }
        .nav-links a.active::after {
            width: 100%;
            background-color: var(--color-accent);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
            cursor: pointer;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: #fff;
            border-radius: 2px;
            transition: transform var(--transition-base), opacity var(--transition-base);
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-nav {
            display: none;
            background-color: var(--color-primary);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 16px 24px 24px;
        }
        .mobile-nav ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .mobile-nav a {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            font-weight: 500;
            padding: 8px 0;
            display: block;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .mobile-nav a.active {
            color: #fff;
            font-weight: 600;
            border-bottom-color: var(--color-accent);
        }
        .mobile-nav a:hover {
            color: #fff;
        }
        /* ========== 面包屑 + H1区 ========== */
        .page-hero {
            background: linear-gradient(135deg, #17171A 0%, #232328 100%);
            padding: 48px 0 40px;
            position: relative;
            overflow: hidden;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
        }
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            padding: 0;
            margin: 0 0 16px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }
        .breadcrumb-custom li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb-custom li + li::before {
            content: '/';
            color: rgba(255, 255, 255, 0.4);
            margin-right: 8px;
        }
        .breadcrumb-custom a {
            color: rgba(255, 255, 255, 0.7);
        }
        .breadcrumb-custom a:hover {
            color: var(--color-accent);
        }
        .page-hero h1 {
            font-size: 36px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 16px;
            line-height: 1.3;
        }
        .page-hero .lead-text {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 780px;
            line-height: 1.8;
            margin: 0;
        }
        /* ========== 板块通用 ========== */
        main {
            padding: 0;
        }
        .section-block {
            padding: 56px 0;
        }
        .section-block:nth-child(even) {
            background-color: #fff;
        }
        .section-block:nth-child(odd) {
            background-color: var(--color-bg);
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 12px;
            line-height: 1.35;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--color-text-secondary);
            margin: 0 0 32px;
            line-height: 1.7;
            max-width: 820px;
        }
        .section-divider {
            width: 56px;
            height: 4px;
            background-color: var(--color-accent);
            border-radius: 2px;
            margin: 0 0 20px;
        }
        /* ========== 卡片列表 ========== */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .article-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .article-card .card-img-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }
        .article-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }
        .article-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }
        .article-card .card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--color-text-light);
            margin-bottom: 10px;
        }
        .article-card .card-meta .tag {
            background-color: rgba(47, 230, 200, 0.12);
            color: #0D8C7A;
            padding: 2px 8px;
            border-radius: var(--radius-tag);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .article-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-primary);
            margin: 0 0 10px;
            line-height: 1.5;
        }
        .article-card h3 a:hover {
            color: var(--color-accent);
        }
        .article-card p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0 0 16px;
            flex: 1;
        }
        .article-card .read-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent);
            align-self: flex-start;
        }
        .article-card .read-more:hover {
            color: var(--color-accent-dark);
            text-decoration: underline;
        }
        .view-more-row {
            text-align: center;
            margin-top: 32px;
        }
        .view-more-link {
            display: inline-block;
            padding: 10px 32px;
            border: 1px solid var(--color-primary);
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            color: var(--color-primary);
            transition: all var(--transition-base);
        }
        .view-more-link:hover {
            background-color: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
        }
        /* ========== 支撑板块A：基础概念 ========== */
        .concept-content {
            background: var(--color-card);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card);
        }
        .concept-content h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-primary);
            margin: 24px 0 12px;
        }
        .concept-content h3:first-child {
            margin-top: 0;
        }
        .concept-content p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin: 0 0 16px;
        }
        .concept-content p:last-child {
            margin-bottom: 0;
        }
        /* ========== 支撑板块B：数据速览 ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-item {
            background: var(--color-card);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
            border-left: 4px solid var(--color-accent);
        }
        .stat-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .stat-item .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-accent);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
            display: block;
            margin-bottom: 8px;
        }
        .stat-item .stat-label {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.5;
        }
        /* ========== 支撑板块C：操作步骤 ========== */
        .steps-list {
            list-style: none;
            padding: 0;
            margin: 0;
            counter-reset: step-counter;
        }
        .steps-list li {
            counter-increment: step-counter;
            position: relative;
            padding: 16px 16px 16px 64px;
            background: var(--color-card);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            box-shadow: var(--shadow-card);
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }
        .steps-list li:hover {
            transform: translateX(4px);
            box-shadow: var(--shadow-hover);
        }
        .steps-list li::before {
            content: counter(step-counter);
            position: absolute;
            left: 20px;
            top: 16px;
            width: 32px;
            height: 32px;
            background: var(--color-accent);
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .steps-list li strong {
            color: var(--color-primary);
            font-weight: 600;
        }
        /* ========== 支撑板块D：相关资源 ========== */
        .resource-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .resource-list li {
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .resource-list li:last-child {
            border-bottom: none;
        }
        .resource-list a {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .resource-list a:hover {
            color: var(--color-accent);
        }
        .resource-list .resource-arrow {
            color: var(--color-text-light);
            font-size: 14px;
            transition: color var(--transition-base);
        }
        .resource-list a:hover .resource-arrow {
            color: var(--color-accent);
        }
        .resource-list .resource-desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            flex-basis: 100%;
            line-height: 1.6;
        }
        /* ========== 支撑板块E：FAQ ========== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-card);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            border: none;
            background: none;
            width: 100%;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            line-height: 1.5;
            transition: background-color var(--transition-base);
        }
        .faq-question:hover {
            background-color: rgba(47, 230, 200, 0.06);
        }
        .faq-question .faq-icon {
            font-size: 24px;
            color: var(--color-signal);
            flex-shrink: 0;
            transition: transform var(--transition-base);
            font-weight: 400;
            line-height: 1;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
        }
        .faq-item.open .faq-answer {
            max-height: 600px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin: 0;
            padding-top: 4px;
            border-top: 1px solid var(--color-border);
        }
        /* ========== 支撑板块F：CTA ========== */
        .cta-section {
            background: var(--color-primary);
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 59, 92, 0.18), transparent 70%);
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
        }
        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .cta-section .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-accent {
            display: inline-block;
            padding: 12px 32px;
            background-color: var(--color-accent);
            color: #fff;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all var(--transition-base);
            letter-spacing: 0.3px;
        }
        .btn-accent:hover {
            background-color: var(--color-accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 59, 92, 0.35);
            color: #fff;
        }
        .btn-outline-dark {
            display: inline-block;
            padding: 12px 32px;
            background-color: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.7);
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition-base);
            letter-spacing: 0.3px;
        }
        .btn-outline-dark:hover {
            background-color: #fff;
            color: var(--color-primary);
            transform: translateY(-2px);
            border-color: #fff;
        }
        /* ========== 表单 ========== */
        .consult-form-wrap {
            background: var(--color-card);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card);
            max-width: 560px;
            margin: 0 auto;
        }
        .consult-form-wrap .form-row {
            margin-bottom: 16px;
        }
        .consult-form-wrap label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 6px;
        }
        .consult-form-wrap .privacy-note {
            font-size: 12px;
            color: var(--color-text-light);
            margin-top: 12px;
            text-align: center;
        }
        /* ========== Footer ========== */
        .site-footer {
            background-color: var(--color-primary);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
        }
        .footer-brand .highlight {
            color: var(--color-accent);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            margin: 0;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: color var(--transition-base);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }
        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 768px) {
            .nav-wrapper {
                height: 60px;
            }
            .nav-links {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-nav.show {
                display: block;
            }
            .page-hero {
                padding: 32px 0 28px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .article-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .section-block {
                padding: 40px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .container {
                padding: 0 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .cta-section {
                padding: 48px 0;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .btn-accent,
            .btn-outline-dark {
                width: 100%;
                text-align: center;
            }
            .btn-group {
                flex-direction: column;
            }
        }
        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 24px;
            }
            .section-title {
                font-size: 22px;
            }
            .article-card .card-body {
                padding: 16px;
            }
            .article-card h3 {
                font-size: 16px;
            }
            .stat-item .stat-number {
                font-size: 28px;
            }
            .concept-content {
                padding: 20px;
            }
            .consult-form-wrap {
                padding: 20px;
            }
        }

/* roulang page: category6 */
:root {
            --color-primary: #17171A;
            --color-accent: #FF3B5C;
            --color-accent-dark: #E62E4C;
            --color-signal: #2FE6C8;
            --color-warm: #F5C451;
            --color-bg: #F6F7F9;
            --color-card: #FFFFFF;
            --color-dark: #202125;
            --color-text: #1D1D1F;
            --color-text-secondary: #55555A;
            --color-text-light: #8A8A8E;
            --color-border: #E5E5E8;
            --radius-card: 12px;
            --radius-btn: 24px;
            --radius-tag: 4px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --container-max: 1200px;
            --font-chinese: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --transition-base: 0.25s ease;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-chinese);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.85;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }

        a:hover,
        a:focus-visible {
            outline: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(255, 59, 92, 0.45);
            outline-offset: 2px;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: background-color var(--transition-base), color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: 16px;
            border: 1px solid var(--color-border);
            border-radius: 8px;
            background-color: #fff;
            padding: 10px 14px;
            width: 100%;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        input:focus,
        textarea:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(255, 59, 92, 0.1);
            outline: none;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* 顶部公告条 */
        .announcement-bar {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.85);
            font-size: 14px;
            padding: 10px 0;
            line-height: 1.6;
        }
        .announcement-bar .container {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            text-align: center;
            flex-wrap: wrap;
        }
        .announcement-bar .signal-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-signal);
            display: inline-block;
            flex-shrink: 0;
            animation: pulse-dot 1.8s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                box-shadow: 0 0 0 0 rgba(47, 230, 200, 0.5);
            }
            50% {
                opacity: 0.7;
                box-shadow: 0 0 0 6px rgba(47, 230, 200, 0);
            }
        }
        .announcement-bar a {
            color: var(--color-signal);
            font-weight: 600;
            margin-left: 4px;
        }
        .announcement-bar a:hover {
            color: #fff;
            text-decoration: underline;
        }

        /* 导航 */
        .site-header {
            background-color: var(--color-primary);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 24px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .brand-logo .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-accent), var(--color-warm));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
        }
        .brand-logo span.logo-text-strong {
            color: var(--color-accent);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 26px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            color: rgba(255, 255, 255, 0.82);
            font-size: 15px;
            font-weight: 500;
            padding: 6px 0;
            position: relative;
            letter-spacing: 0.3px;
            white-space: nowrap;
            display: block;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background-color: var(--color-accent);
            transition: width var(--transition-base);
        }
        .nav-links a:hover {
            color: #fff;
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a.active {
            color: #fff;
            font-weight: 600;
        }
        .nav-links a.active::after {
            width: 100%;
            background-color: var(--color-accent);
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
            cursor: pointer;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: #fff;
            border-radius: 2px;
            transition: transform var(--transition-base), opacity var(--transition-base);
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* 面包屑 */
        .breadcrumb-area {
            background-color: var(--color-card);
            border-bottom: 1px solid var(--color-border);
            padding: 14px 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-secondary);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-text-secondary);
            font-weight: 500;
        }
        .breadcrumb a:hover {
            color: var(--color-accent);
        }
        .breadcrumb .separator {
            color: var(--color-text-light);
            user-select: none;
        }
        .breadcrumb .current {
            color: var(--color-text);
            font-weight: 600;
        }

        /* 分类页H1区 */
        .category-header {
            position: relative;
            background: var(--color-primary);
            padding: 48px 0 40px;
            overflow: hidden;
        }
        .category-header .header-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/cae5a8a44957ddd1.jpg') center/cover no-repeat;
            opacity: 0.25;
            z-index: 1;
        }
        .category-header .header-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(23, 23, 26, 0.55) 0%, rgba(23, 23, 26, 0.85) 100%);
            z-index: 2;
        }
        .category-header .container {
            position: relative;
            z-index: 3;
        }
        .category-header h1 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.4;
            color: #fff;
            margin: 0 0 14px;
            letter-spacing: 0.5px;
        }
        .category-header .header-intro {
            font-size: 16px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.85);
            max-width: 760px;
            margin: 0;
        }
        .category-header .header-tag {
            display: inline-block;
            background: rgba(255, 59, 92, 0.18);
            color: var(--color-accent);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
            border: 1px solid rgba(255, 59, 92, 0.3);
        }

        /* 通用section */
        .section {
            padding: 56px 0;
        }
        .section-alt {
            background: var(--color-card);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .section-dark {
            background: var(--color-primary);
            color: #fff;
        }
        .section-dark .section-title {
            color: #fff;
        }
        .section-dark .section-lead {
            color: rgba(255, 255, 255, 0.75);
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-text);
            margin: 0 0 10px;
            letter-spacing: 0.5px;
        }
        .section-lead {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.9;
            margin: 0 0 32px;
            max-width: 720px;
        }

        /* 文章卡片网格 */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .article-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .article-card .card-image {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #e8e8ec;
        }
        .article-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }
        .article-card:hover .card-image img {
            transform: scale(1.04);
        }
        .article-card .card-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .article-card .card-tag {
            display: inline-block;
            background: rgba(47, 230, 200, 0.12);
            color: #0a7f6a;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            margin-bottom: 10px;
            align-self: flex-start;
            letter-spacing: 0.3px;
        }
        .article-card h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.5;
            margin: 0 0 8px;
            color: var(--color-text);
        }
        .article-card h3 a {
            color: inherit;
            transition: color var(--transition-base);
        }
        .article-card h3 a:hover {
            color: var(--color-accent);
        }
        .article-card .card-summary {
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-text-secondary);
            margin: 0 0 14px;
            flex: 1;
        }
        .article-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--color-text-light);
            padding-top: 12px;
            border-top: 1px solid var(--color-border);
        }
        .article-card .card-meta .date {
            color: var(--color-text-light);
        }
        .article-card .read-more {
            color: var(--color-accent);
            font-weight: 600;
            font-size: 13px;
        }
        .article-card .read-more:hover {
            color: var(--color-accent-dark);
        }

        /* 查看更多 */
        .view-more {
            display: flex;
            justify-content: center;
            margin-top: 36px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            padding: 11px 28px;
            border-radius: var(--radius-btn);
            letter-spacing: 0.3px;
            white-space: nowrap;
            transition: all var(--transition-base);
        }
        .btn-primary {
            background: var(--color-accent);
            color: #fff;
            border: 2px solid var(--color-accent);
        }
        .btn-primary:hover {
            background: var(--color-accent-dark);
            border-color: var(--color-accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(255, 59, 92, 0.3);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
        }
        .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.7);
        }
        .btn-outline-light:hover {
            background: #fff;
            color: var(--color-primary);
            transform: translateY(-2px);
        }

        /* 基础概念板块 */
        .concept-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: start;
        }
        .concept-block .concept-text {
            font-size: 15px;
            line-height: 2;
            color: var(--color-text-secondary);
        }
        .concept-block .concept-text p {
            margin-bottom: 16px;
        }
        .concept-block .concept-text p:last-child {
            margin-bottom: 0;
        }
        .concept-highlight {
            background: var(--color-bg);
            border-left: 4px solid var(--color-accent);
            padding: 18px 20px;
            border-radius: 0 var(--radius-card) var(--radius-card) 0;
            font-size: 14px;
            line-height: 1.9;
            color: var(--color-text);
        }
        .concept-highlight strong {
            color: var(--color-accent);
            font-weight: 600;
        }

        /* 数据速览 */
        .data-strip-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }
        .data-strip-card {
            background: var(--color-bg);
            border-radius: var(--radius-card);
            padding: 22px 20px;
            border: 1px solid var(--color-border);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }
        .data-strip-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .data-strip-card .data-icon {
            font-size: 24px;
            margin-bottom: 10px;
            display: block;
        }
        .data-strip-card .data-value {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-accent);
            font-variant-numeric: tabular-nums;
            letter-spacing: 0.3px;
            margin-bottom: 6px;
        }
        .data-strip-card .data-label {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* 操作步骤 */
        .steps-timeline {
            list-style: none;
            padding: 0;
            margin: 0;
            position: relative;
        }
        .steps-timeline::before {
            content: '';
            position: absolute;
            left: 18px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--color-border);
        }
        .steps-timeline li {
            position: relative;
            padding-left: 56px;
            margin-bottom: 24px;
        }
        .steps-timeline li:last-child {
            margin-bottom: 0;
        }
        .steps-timeline .step-marker {
            position: absolute;
            left: 0;
            top: 4px;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 700;
            z-index: 2;
        }
        .steps-timeline .step-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
        }
        .steps-timeline .step-desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin: 0;
        }

        /* 资源列表 */
        .resource-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }
        .resource-item {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .resource-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .resource-item .resource-icon {
            font-size: 22px;
            margin-bottom: 10px;
        }
        .resource-item h4 {
            font-size: 15px;
            font-weight: 600;
            line-height: 1.5;
            margin: 0 0 6px;
            color: var(--color-text);
        }
        .resource-item p {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0 0 12px;
            flex: 1;
        }
        .resource-item a {
            color: var(--color-accent);
            font-weight: 600;
            font-size: 13px;
        }
        .resource-item a:hover {
            color: var(--color-accent-dark);
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-base);
        }
        .faq-item:last-child {
            margin-bottom: 0;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-hover);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            cursor: pointer;
            gap: 16px;
            user-select: none;
        }
        .faq-question h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin: 0;
            line-height: 1.6;
        }
        .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--color-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--color-accent);
            flex-shrink: 0;
            transition: transform var(--transition-base);
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: rgba(47, 230, 200, 0.2);
            color: #0a7f6a;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 22px;
        }
        .faq-item.active .faq-answer {
            max-height: 500px;
            padding: 0 22px 20px;
        }
        .faq-answer p {
            font-size: 14px;
            line-height: 1.9;
            color: var(--color-text-secondary);
            margin: 0;
        }

        /* CTA区域 */
        .cta-panel {
            background: var(--color-dark);
            border-radius: var(--radius-card);
            padding: 40px 36px;
            text-align: center;
            color: #fff;
        }
        .cta-panel .cta-title {
            font-size: 24px;
            font-weight: 700;
            margin: 0 0 10px;
        }
        .cta-panel .cta-text {
            font-size: 15px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.75);
            max-width: 560px;
            margin: 0 auto 24px;
        }
        .cta-panel .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* 表单 */
        .consult-form {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            max-width: 560px;
            margin: 0 auto;
        }
        .consult-form .form-row {
            margin-bottom: 16px;
        }
        .consult-form label {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            display: block;
            margin-bottom: 6px;
        }
        .consult-form .form-hint {
            font-size: 12px;
            color: var(--color-text-light);
            margin-top: 10px;
            text-align: center;
        }
        .consult-form .btn {
            width: 100%;
        }

        /* 页脚 */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 0;
            font-size: 14px;
            line-height: 1.8;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 10px;
        }
        .footer-brand h3 .highlight {
            color: var(--color-accent);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.7);
            margin: 0;
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 14px;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li:last-child {
            margin-bottom: 0;
        }
        .footer-col a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            transition: color var(--transition-base);
        }
        .footer-col a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }
        .footer-bottom span {
            white-space: nowrap;
        }

        /* 移动端抽屉 */
        .mobile-menu-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        .mobile-menu-overlay.active {
            opacity: 1;
        }
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            right: -300px;
            width: 280px;
            height: 100vh;
            background: var(--color-primary);
            z-index: 1001;
            padding: 24px 20px;
            transition: right 0.3s ease;
            overflow-y: auto;
        }
        .mobile-drawer.open {
            right: 0;
        }
        .mobile-drawer .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 28px;
        }
        .mobile-drawer .drawer-brand {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
        }
        .mobile-drawer .drawer-close {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .mobile-drawer .drawer-nav {
            list-style: none;
            padding: 0;
        }
        .mobile-drawer .drawer-nav li {
            margin-bottom: 8px;
        }
        .mobile-drawer .drawer-nav a {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            font-weight: 500;
            padding: 10px 14px;
            display: block;
            border-radius: 8px;
            transition: background-color var(--transition-base), color var(--transition-base);
        }
        .mobile-drawer .drawer-nav a:hover,
        .mobile-drawer .drawer-nav a.active {
            background: rgba(255, 59, 92, 0.12);
            color: var(--color-accent);
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .nav-links {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-drawer,
            .mobile-menu-overlay {
                display: block;
            }
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-strip-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .resource-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .concept-block {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .category-header h1 {
                font-size: 28px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .category-header {
                padding: 36px 0 32px;
            }
            .category-header h1 {
                font-size: 24px;
            }
            .article-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .data-strip-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .resource-list {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .steps-timeline li {
                padding-left: 48px;
            }
            .steps-timeline .step-marker {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }
            .cta-panel {
                padding: 28px 20px;
            }
            .cta-panel .cta-title {
                font-size: 20px;
            }
            .consult-form {
                padding: 24px 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .footer-bottom span {
                white-space: normal;
            }
            .btn {
                font-size: 14px;
                padding: 10px 22px;
            }
            .faq-question {
                padding: 15px 18px;
            }
            .faq-answer {
                padding: 0 18px;
            }
            .faq-item.active .faq-answer {
                padding: 0 18px 16px;
            }
        }

        @media (max-width: 520px) {
            .category-header h1 {
                font-size: 21px;
                line-height: 1.5;
            }
            .category-header .header-intro {
                font-size: 14px;
            }
            .section-title {
                font-size: 21px;
            }
            .article-card .card-body {
                padding: 16px 18px 18px;
            }
            .article-card h3 {
                font-size: 16px;
            }
            .btn {
                width: 100%;
            }
            .cta-panel .cta-actions {
                flex-direction: column;
            }
            .announcement-bar {
                font-size: 12px;
                padding: 8px 0;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}