/* roulang page: index */
:root {
            --color-primary: #1c1c1e;
            --color-accent: #b8945c;
            --color-accent-hover: #a07d48;
            --color-surface: #ffffff;
            --color-bg: #f9f7f4;
            --color-bg-alt: #f0ede8;
            --color-bg-dark: #1c1c1e;
            --color-text: #1c1c1e;
            --color-text-soft: #5c5c5e;
            --color-text-light: #8e8e90;
            --color-text-inverse: #f5f0eb;
            --color-border: #e5e0da;
            --color-border-light: #f0ede8;
            --color-success: #3b7d4f;
            --color-warning: #c98d3e;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(28, 28, 30, 0.06);
            --shadow-md: 0 4px 16px rgba(28, 28, 30, 0.08);
            --shadow-lg: 0 12px 40px rgba(28, 28, 30, 0.12);
            --shadow-xl: 0 20px 60px rgba(28, 28, 30, 0.16);
            --space-xs: 4px;
            --space-sm: 8px;
            --space-md: 16px;
            --space-lg: 24px;
            --space-xl: 32px;
            --space-2xl: 48px;
            --space-3xl: 64px;
            --space-4xl: 80px;
            --space-5xl: 100px;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --font-serif: 'Noto Serif SC', 'STSong', 'Songti SC', 'SimSun', serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            color: var(--color-text);
            background-color: var(--color-bg);
            line-height: 1.7;
            min-height: 100vh;
            letter-spacing: 0.01em;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent);
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 3px;
        }

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
            transition: all var(--transition-base);
        }
        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 3px;
        }

        input {
            font-family: inherit;
            font-size: inherit;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            background: var(--color-surface);
        }
        input:focus {
            outline: none;
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(184, 148, 92, 0.1);
        }

        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--space-lg);
        }

        /* Header - 卡片化导航面板 */
        .site-header {
            position: sticky;
            top: 16px;
            z-index: 1000;
            padding: 0 var(--space-lg);
            pointer-events: none;
        }
        .site-header .nav-card {
            pointer-events: auto;
            background: var(--color-surface);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
            padding: 0 var(--space-xl);
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            border: 1px solid var(--color-border-light);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            background: rgba(255, 255, 255, 0.94);
            transition: box-shadow var(--transition-base), border-color var(--transition-base);
        }
        .site-header .nav-card.scrolled {
            box-shadow: var(--shadow-xl);
            border-color: var(--color-border);
        }

        .header-logo {
            font-family: var(--font-serif);
            font-size: 1.25rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            color: var(--color-primary);
            white-space: nowrap;
            transition: color var(--transition-fast);
        }
        .header-logo:hover {
            color: var(--color-accent);
        }
        .header-logo .logo-dot {
            display: inline-block;
            width: 6px;
            height: 6px;
            background: var(--color-accent);
            border-radius: 50%;
            margin-left: 3px;
            vertical-align: middle;
            position: relative;
            top: -2px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 7px 15px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-soft);
            transition: all var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .nav-links a:hover {
            color: var(--color-accent);
            background: rgba(184, 148, 92, 0.06);
        }
        .nav-links a.active {
            color: var(--color-accent);
            background: rgba(184, 148, 92, 0.1);
            font-weight: 600;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            border-radius: 22px;
            font-size: 0.88rem;
            font-weight: 600;
            background: var(--color-accent);
            color: #fff !important;
            letter-spacing: 0.03em;
            white-space: nowrap;
            transition: all var(--transition-base);
            box-shadow: 0 2px 8px rgba(184, 148, 92, 0.25);
        }
        .nav-cta:hover {
            background: var(--color-accent-hover);
            box-shadow: 0 4px 16px rgba(184, 148, 92, 0.35);
            transform: translateY(-1px);
            color: #fff !important;
        }

        .mobile-menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            pointer-events: auto;
            transition: background var(--transition-fast);
        }
        .mobile-menu-toggle:hover {
            background: var(--color-border);
        }
        .mobile-menu-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: all var(--transition-base);
        }
        .mobile-menu-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .mobile-menu-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .mobile-menu-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: 88px;
            left: var(--space-lg);
            right: var(--space-lg);
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            padding: var(--space-lg);
            flex-direction: column;
            gap: var(--space-sm);
            z-index: 999;
            border: 1px solid var(--color-border-light);
            pointer-events: auto;
        }
        .mobile-nav-panel.open {
            display: flex;
        }
        .mobile-nav-panel a {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-text);
            transition: all var(--transition-fast);
        }
        .mobile-nav-panel a:hover,
        .mobile-nav-panel a.active {
            background: rgba(184, 148, 92, 0.08);
            color: var(--color-accent);
        }
        .mobile-nav-panel .nav-cta-mobile {
            display: block;
            text-align: center;
            padding: 13px 20px;
            border-radius: 24px;
            font-weight: 600;
            background: var(--color-accent);
            color: #fff !important;
            margin-top: var(--space-sm);
            letter-spacing: 0.03em;
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            background: url('assets/images/backpic/back-1.webp') center/cover no-repeat;
            background-position: center 40%;
            border-radius: 0 0 var(--radius-xl) var(--radius-xl);
            overflow: hidden;
            margin-bottom: var(--space-3xl);
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(28, 28, 30, 0.55) 0%, rgba(28, 28, 30, 0.35) 60%, rgba(28, 28, 30, 0.7) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            color: #fff;
            max-width: 720px;
            padding: var(--space-5xl) 0 var(--space-4xl);
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            font-size: 0.82rem;
            font-weight: 500;
            letter-spacing: 0.05em;
            margin-bottom: var(--space-lg);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .hero h1 {
            font-family: var(--font-serif);
            font-size: 3.2rem;
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: 0.03em;
            margin-bottom: var(--space-lg);
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
        }
        .hero-desc {
            font-size: 1.15rem;
            line-height: 1.8;
            opacity: 0.9;
            margin-bottom: var(--space-xl);
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            gap: var(--space-md);
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 26px;
            font-size: 0.95rem;
            font-weight: 600;
            background: var(--color-accent);
            color: #fff;
            letter-spacing: 0.03em;
            transition: all var(--transition-base);
            box-shadow: 0 4px 18px rgba(184, 148, 92, 0.35);
        }
        .btn-primary:hover {
            background: var(--color-accent-hover);
            box-shadow: 0 6px 24px rgba(184, 148, 92, 0.5);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 26px;
            font-size: 0.95rem;
            font-weight: 600;
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
            letter-spacing: 0.03em;
            transition: all var(--transition-base);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        /* Sections */
        .section {
            padding: var(--space-4xl) 0;
        }
        .section-sm {
            padding: var(--space-3xl) 0;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: var(--space-sm);
        }
        .section-title {
            font-family: var(--font-serif);
            font-size: 2.2rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            margin-bottom: var(--space-md);
            line-height: 1.25;
            color: var(--color-primary);
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--color-text-soft);
            max-width: 600px;
            line-height: 1.7;
        }
        .section-header {
            margin-bottom: var(--space-3xl);
        }
        .section-header.centered {
            text-align: center;
        }
        .section-header.centered .section-desc {
            margin: 0 auto;
        }

        /* 服务矩阵卡片 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-lg);
        }
        .service-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: var(--space-xl) var(--space-lg);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            text-align: center;
            box-shadow: var(--shadow-sm);
        }
        .service-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--color-border);
            transform: translateY(-4px);
        }
        .service-card .service-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(184, 148, 92, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--space-md);
            font-size: 1.5rem;
            color: var(--color-accent);
            transition: all var(--transition-base);
        }
        .service-card:hover .service-icon {
            background: var(--color-accent);
            color: #fff;
            transform: scale(1.05);
        }
        .service-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: var(--space-sm);
            letter-spacing: 0.02em;
        }
        .service-card p {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            line-height: 1.6;
        }

        /* 分类入口网格 */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-lg);
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            aspect-ratio: 4/3;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-base);
            background: var(--color-bg-alt);
        }
        .category-card:hover {
            box-shadow: var(--shadow-xl);
            transform: translateY(-5px);
        }
        .category-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .category-card:hover img {
            transform: scale(1.06);
        }
        .category-card .card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(28, 28, 30, 0.15) 0%, rgba(28, 28, 30, 0.65) 70%, rgba(28, 28, 30, 0.85) 100%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: var(--space-xl);
        }
        .category-card .card-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 14px;
            background: rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            font-size: 0.75rem;
            font-weight: 500;
            color: #fff;
            letter-spacing: 0.04em;
            margin-bottom: var(--space-sm);
            width: fit-content;
        }
        .category-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.03em;
            margin-bottom: 4px;
        }
        .category-card .card-arrow {
            font-size: 1.1rem;
            color: var(--color-accent);
            opacity: 0;
            transform: translateX(-8px);
            transition: all var(--transition-base);
            display: inline-block;
        }
        .category-card:hover .card-arrow {
            opacity: 1;
            transform: translateX(0);
        }

        /* 数据看板 */
        .data-dashboard {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-lg);
        }
        .data-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: var(--space-xl);
            border: 1px solid var(--color-border-light);
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .data-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-border);
        }
        .data-card .data-value {
            font-family: var(--font-serif);
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--color-accent);
            letter-spacing: 0.02em;
            line-height: 1;
        }
        .data-card .data-label {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            margin-top: var(--space-sm);
            letter-spacing: 0.03em;
        }
        .data-card .data-trend {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 12px;
            font-size: 0.78rem;
            font-weight: 600;
            margin-top: var(--space-sm);
        }
        .data-trend.up {
            background: rgba(59, 125, 79, 0.1);
            color: var(--color-success);
        }
        .data-trend.stable {
            background: rgba(184, 148, 92, 0.1);
            color: var(--color-accent);
        }

        /* 资讯列表 */
        .news-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-lg);
        }
        .news-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .news-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }
        .news-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .news-card .news-body {
            padding: var(--space-lg);
        }
        .news-card .news-date {
            font-size: 0.78rem;
            color: var(--color-text-light);
            letter-spacing: 0.03em;
            margin-bottom: var(--space-sm);
        }
        .news-card h4 {
            font-size: 1.05rem;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: var(--space-sm);
            letter-spacing: 0.02em;
        }
        .news-card p {
            font-size: 0.88rem;
            color: var(--color-text-soft);
            line-height: 1.6;
        }
        .news-card .news-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent);
            margin-top: var(--space-sm);
            letter-spacing: 0.03em;
            transition: gap var(--transition-fast);
        }
        .news-card .news-link:hover {
            gap: 8px;
            color: var(--color-accent-hover);
        }

        /* 优势特点 */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-xl);
        }
        .feature-item {
            display: flex;
            gap: var(--space-md);
            align-items: flex-start;
        }
        .feature-item .feature-num {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(184, 148, 92, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--color-accent);
        }
        .feature-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 4px;
            letter-spacing: 0.02em;
        }
        .feature-item p {
            font-size: 0.88rem;
            color: var(--color-text-soft);
            line-height: 1.6;
        }

        /* 平台动态 - 时间线 */
        .timeline {
            display: flex;
            flex-direction: column;
            gap: var(--space-lg);
            position: relative;
            padding-left: 32px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 12px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--color-border);
        }
        .timeline-item {
            position: relative;
            padding-left: var(--space-lg);
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -26px;
            top: 6px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-accent);
            box-shadow: 0 0 0 4px rgba(184, 148, 92, 0.15);
        }
        .timeline-item .tl-date {
            font-size: 0.8rem;
            color: var(--color-text-light);
            letter-spacing: 0.04em;
            margin-bottom: 2px;
        }
        .timeline-item h4 {
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .timeline-item p {
            font-size: 0.88rem;
            color: var(--color-text-soft);
            line-height: 1.6;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }
        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--color-border);
        }
        .faq-question {
            width: 100%;
            padding: var(--space-lg);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.02em;
            text-align: left;
            color: var(--color-primary);
            background: none;
            cursor: pointer;
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            transition: all var(--transition-base);
            color: var(--color-text-soft);
        }
        .faq-item.open .faq-icon {
            background: var(--color-accent);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            padding: 0 var(--space-lg);
            font-size: 0.92rem;
            color: var(--color-text-soft);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 var(--space-lg) var(--space-lg);
        }

        /* CTA */
        .cta-section {
            background: var(--color-bg-dark);
            border-radius: var(--radius-xl);
            padding: var(--space-4xl) var(--space-3xl);
            text-align: center;
            color: var(--color-text-inverse);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(184, 148, 92, 0.12);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(184, 148, 92, 0.08);
            pointer-events: none;
        }
        .cta-section .section-title {
            color: #fff;
            position: relative;
            z-index: 1;
        }
        .cta-section .section-desc {
            color: rgba(245, 240, 235, 0.75);
            margin: 0 auto var(--space-xl);
            position: relative;
            z-index: 1;
        }
        .cta-section .btn-primary {
            position: relative;
            z-index: 1;
            font-size: 1rem;
            padding: 15px 34px;
            border-radius: 28px;
        }

        /* Footer */
        .site-footer {
            background: var(--color-primary);
            color: var(--color-text-inverse);
            padding: var(--space-4xl) 0 var(--space-xl);
            margin-top: var(--space-4xl);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: var(--space-2xl);
            margin-bottom: var(--space-3xl);
        }
        .footer-brand .footer-logo {
            font-family: var(--font-serif);
            font-size: 1.3rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            margin-bottom: var(--space-md);
            color: #fff;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: rgba(245, 240, 235, 0.6);
            line-height: 1.7;
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: var(--space-md);
            color: #fff;
        }
        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: rgba(245, 240, 235, 0.6);
            padding: 5px 0;
            transition: color var(--transition-fast);
            letter-spacing: 0.02em;
        }
        .footer-col a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(245, 240, 235, 0.12);
            padding-top: var(--space-lg);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--space-md);
            font-size: 0.82rem;
            color: rgba(245, 240, 235, 0.45);
            letter-spacing: 0.02em;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 2.5rem;
            }
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-dashboard {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-xl);
            }
            .nav-links a {
                padding: 6px 10px;
                font-size: 0.82rem;
            }
            .site-header .nav-card {
                padding: 0 var(--space-md);
            }
        }

        @media (max-width: 768px) {
            .site-header .nav-card {
                height: 54px;
                padding: 0 var(--space-md);
                border-radius: var(--radius-lg);
            }
            .nav-links {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .hero {
                min-height: 480px;
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                margin-bottom: var(--space-2xl);
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .hero-content {
                padding: var(--space-4xl) 0 var(--space-3xl);
            }
            .section {
                padding: var(--space-3xl) 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .service-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-md);
            }
            .category-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-md);
            }
            .data-dashboard {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-md);
            }
            .data-card .data-value {
                font-size: 2.2rem;
            }
            .news-list {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-xl);
            }
            .cta-section {
                padding: var(--space-3xl) var(--space-lg);
                border-radius: var(--radius-lg);
            }
            .timeline {
                padding-left: 24px;
            }
            .timeline::before {
                left: 8px;
            }
            .timeline-item::before {
                left: -22px;
                width: 8px;
                height: 8px;
            }
            .container {
                padding: 0 var(--space-md);
            }
            .site-header {
                padding: 0 var(--space-md);
                top: 10px;
            }
            .mobile-nav-panel {
                left: var(--space-md);
                right: var(--space-md);
                top: 78px;
            }
        }

        @media (max-width: 520px) {
            .hero {
                min-height: 420px;
            }
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero-desc {
                font-size: 0.9rem;
            }
            .hero-actions {
                flex-direction: column;
                gap: var(--space-sm);
            }
            .btn-primary,
            .btn-outline {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
                font-size: 0.9rem;
            }
            .service-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .category-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .data-dashboard {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-sm);
            }
            .data-card {
                padding: var(--space-md);
            }
            .data-card .data-value {
                font-size: 1.8rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .news-list {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .site-header .nav-card {
                height: 48px;
                padding: 0 var(--space-sm);
                border-radius: var(--radius-md);
            }
            .header-logo {
                font-size: 1.1rem;
            }
            .mobile-nav-panel {
                top: 68px;
                left: var(--space-sm);
                right: var(--space-sm);
            }
        }

/* roulang page: category4 */
/* ========== 设计变量 ========== */
        :root {
            --color-primary: #1a1d2e;
            --color-primary-light: #252a40;
            --color-accent: #c8a45c;
            --color-accent-hover: #d4b368;
            --color-accent-subtle: #f5f0e6;
            --color-bg: #fafaf8;
            --color-bg-white: #ffffff;
            --color-bg-dark: #1a1d2e;
            --color-text: #1a1d2e;
            --color-text-secondary: #5a5d6e;
            --color-text-muted: #8a8d9a;
            --color-text-on-dark: #e8e9f0;
            --color-border: #e2e3e8;
            --color-border-light: #f0f1f4;
            --color-success: #3b8c5e;
            --color-tag-bg: #faf5eb;
            --color-tag-text: #b08a3c;

            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50%;

            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.08);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.10);
            --shadow-card-hover: 0 8px 28px rgba(0, 0, 0, 0.10);

            --space-xs: 6px;
            --space-sm: 12px;
            --space-md: 20px;
            --space-lg: 32px;
            --space-xl: 48px;
            --space-2xl: 64px;
            --space-3xl: 80px;

            --font-sans: 'Inter', 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-display: 'Playfair Display', 'Noto Serif SC', 'STSong', 'Georgia', 'Times New Roman', serif;

            --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-spring: 0.4s cubic-bezier(0.22, 0.8, 0.24, 1.1);

            --max-width: 1200px;
            --navbar-height: 68px;
        }

        /* ========== Reset & Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.65;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            font-size: inherit;
        }

        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.28;
            font-weight: 600;
            letter-spacing: -0.01em;
        }

        /* ========== Container ========== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-lg);
        }

        @media (max-width: 1024px) {
            .container {
                padding: 0 var(--space-md);
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 var(--space-sm);
            }
            :root {
                --space-xl: 32px;
                --space-2xl: 40px;
                --space-3xl: 48px;
            }
        }

        /* ========== Header / Navbar ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border-light);
            height: var(--navbar-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-lg);
            gap: var(--space-lg);
        }

        @media (max-width: 1024px) {
            .header-inner {
                padding: 0 var(--space-md);
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                padding: 0 var(--space-sm);
            }
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
            font-family: var(--font-display);
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            color: var(--color-primary);
            white-space: nowrap;
            flex-shrink: 0;
            transition: opacity var(--transition-fast);
        }
        .logo-link:hover {
            opacity: 0.82;
        }
        .logo-dot {
            width: 8px;
            height: 8px;
            border-radius: var(--radius-full);
            background: var(--color-accent);
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            padding: 4px 0;
        }
        .nav-links::-webkit-scrollbar {
            display: none;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 15px;
            border-radius: var(--radius-md);
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            white-space: nowrap;
            transition: background var(--transition-fast), color var(--transition-fast);
            letter-spacing: 0.01em;
        }
        .nav-links a:hover {
            background: var(--color-accent-subtle);
            color: var(--color-primary);
        }
        .nav-links a.active {
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
        }
        .nav-links a.nav-cta {
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            padding: 8px 20px;
            border-radius: var(--radius-md);
            transition: background var(--transition-fast), transform var(--transition-fast);
        }
        .nav-links a.nav-cta:hover {
            background: var(--color-accent-hover);
            transform: translateY(-1px);
            color: #fff;
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
            flex-shrink: 0;
        }
        .menu-toggle:hover {
            background: var(--color-accent-subtle);
        }
        .menu-toggle span {
            display: block;
            width: 24px;
            height: 2.2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: transform var(--transition-smooth), opacity var(--transition-fast);
        }

        @media (max-width: 920px) {
            .menu-toggle {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: var(--navbar-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: var(--space-md);
                gap: 4px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: transform var(--transition-spring), opacity var(--transition-smooth);
                z-index: 999;
                max-height: 70vh;
                overflow-y: auto;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                padding: 12px 16px;
                font-size: 1rem;
                border-radius: var(--radius-md);
            }
            .nav-links a.nav-cta {
                text-align: center;
                justify-content: center;
            }
        }

        /* ========== Main ========== */
        .page-main {
            flex: 1;
        }

        /* ========== Page Banner ========== */
        .page-banner {
            position: relative;
            background: var(--color-bg-dark);
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center 35%;
            background-repeat: no-repeat;
            padding: var(--space-3xl) 0;
            color: #fff;
            display: flex;
            align-items: center;
            min-height: 340px;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 29, 46, 0.88) 0%, rgba(26, 29, 46, 0.6) 55%, rgba(26, 29, 46, 0.35) 100%);
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .page-banner .banner-tag {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            margin-bottom: var(--space-md);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: var(--space-sm);
            line-height: 1.2;
        }
        .page-banner .banner-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .page-banner {
                min-height: 260px;
                padding: var(--space-2xl) 0;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner .banner-desc {
                font-size: 1rem;
            }
        }

        /* ========== Section Common ========== */
        .section {
            padding: var(--space-3xl) 0;
        }
        .section-tight {
            padding: var(--space-2xl) 0;
        }
        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: var(--space-sm);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--space-sm);
            letter-spacing: -0.015em;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            max-width: 620px;
            margin-bottom: var(--space-xl);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
            .section {
                padding: var(--space-2xl) 0;
            }
        }

        /* ========== Pinned Update Card ========== */
        .pinned-update {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: var(--space-xl);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border);
            display: flex;
            gap: var(--space-xl);
            align-items: center;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }
        .pinned-update::after {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 120px;
            height: 120px;
            border-radius: var(--radius-full);
            background: var(--color-accent-subtle);
            z-index: 0;
            pointer-events: none;
        }
        .pinned-update>* {
            position: relative;
            z-index: 1;
        }
        .pinned-badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: var(--color-primary);
            color: #fff;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            white-space: nowrap;
        }
        .pinned-badge .dot-pulse {
            width: 7px;
            height: 7px;
            border-radius: var(--radius-full);
            background: #4ade80;
            animation: pulse-dot 1.6s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.4;
                transform: scale(1.6);
            }
        }
        .pinned-content {
            flex: 1;
            min-width: 240px;
        }
        .pinned-content h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 6px;
        }
        .pinned-content p {
            color: var(--color-text-secondary);
            font-size: 0.98rem;
            line-height: 1.6;
            margin-bottom: var(--space-sm);
        }
        .pinned-meta {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            display: flex;
            gap: var(--space-md);
            flex-wrap: wrap;
        }
        .pinned-action .btn {
            white-space: nowrap;
        }

        @media (max-width: 768px) {
            .pinned-update {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--space-md);
                padding: var(--space-lg);
            }
            .pinned-action {
                align-self: stretch;
            }
            .pinned-action .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ========== Buttons ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 22px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.01em;
            transition: all var(--transition-smooth);
            cursor: pointer;
            line-height: 1.4;
            text-align: center;
        }
        .btn-primary {
            background: var(--color-accent);
            color: #fff;
            box-shadow: 0 2px 8px rgba(200, 164, 92, 0.25);
        }
        .btn-primary:hover {
            background: var(--color-accent-hover);
            box-shadow: 0 6px 20px rgba(200, 164, 92, 0.35);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border: 1.5px solid var(--color-border);
        }
        .btn-outline:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: var(--color-accent-subtle);
        }
        .btn-sm {
            padding: 7px 16px;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
        }
        .btn-dark {
            background: var(--color-primary);
            color: #fff;
        }
        .btn-dark:hover {
            background: var(--color-primary-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        /* ========== Update List / Cards ========== */
        .update-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-md);
        }
        .update-card {
            display: flex;
            gap: var(--space-lg);
            background: #fff;
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            border: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition-smooth), transform var(--transition-smooth), border-color var(--transition-fast);
            align-items: flex-start;
        }
        .update-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: var(--color-border);
        }
        .update-card-img {
            flex-shrink: 0;
            width: 200px;
            height: 140px;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: #f5f5f5;
        }
        .update-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .update-card:hover .update-card-img img {
            transform: scale(1.04);
        }
        .update-card-body {
            flex: 1;
            min-width: 0;
        }
        .update-card-body .card-tag {
            display: inline-block;
            background: var(--color-tag-bg);
            color: var(--color-tag-text);
            padding: 4px 10px;
            border-radius: 12px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 8px;
        }
        .update-card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .update-card-body p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .update-card-body .card-meta {
            font-size: 0.82rem;
            color: var(--color-text-muted);
        }
        @media (max-width: 768px) {
            .update-card {
                flex-direction: column;
                gap: var(--space-sm);
            }
            .update-card-img {
                width: 100%;
                height: 180px;
            }
        }

        /* ========== Timeline Section ========== */
        .timeline {
            position: relative;
            padding-left: 28px;
            border-left: 2px solid var(--color-border);
            display: flex;
            flex-direction: column;
            gap: var(--space-xl);
        }
        .timeline-item {
            position: relative;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -36px;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: var(--radius-full);
            background: var(--color-accent);
            border: 3px solid #fff;
            box-shadow: 0 0 0 3px var(--color-accent);
            z-index: 2;
        }
        .timeline-item .tl-date {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--color-accent);
            letter-spacing: 0.04em;
            margin-bottom: 4px;
        }
        .timeline-item h4 {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 2px;
        }
        .timeline-item p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.55;
        }

        /* ========== CTA Section ========== */
        .cta-section {
            background: var(--color-bg-dark);
            background-image: url('assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            color: #fff;
            text-align: center;
            padding: var(--space-3xl) 0;
            border-radius: var(--radius-xl);
            overflow: hidden;
            margin: var(--space-2xl) 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(26, 29, 46, 0.82);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: var(--space-sm);
            letter-spacing: -0.015em;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.78);
            max-width: 550px;
            margin: 0 auto var(--space-lg);
            line-height: 1.6;
        }
        .cta-section .btn {
            font-size: 1rem;
            padding: 12px 28px;
        }
        @media (max-width: 768px) {
            .cta-section {
                border-radius: var(--radius-lg);
                margin: var(--space-xl) 0;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: box-shadow var(--transition-fast);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--color-primary);
            text-align: left;
            letter-spacing: 0.01em;
            gap: var(--space-md);
            transition: background var(--transition-fast);
        }
        .faq-question:hover {
            background: var(--color-accent-subtle);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: var(--radius-full);
            background: var(--color-accent-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--color-accent);
            transition: transform var(--transition-smooth), background var(--transition-fast);
            font-weight: 700;
            line-height: 1;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--color-accent);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 16px;
        }
        .faq-answer p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ========== Subscribe Mini ========== */
        .subscribe-box {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: var(--space-xl);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            display: flex;
            gap: var(--space-md);
            align-items: center;
            flex-wrap: wrap;
        }
        .subscribe-box .sub-info {
            flex: 1;
            min-width: 200px;
        }
        .subscribe-box .sub-info h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 4px;
        }
        .subscribe-box .sub-info p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
        }
        .subscribe-form {
            display: flex;
            gap: var(--space-sm);
            flex-wrap: wrap;
        }
        .subscribe-form input[type="email"] {
            padding: 10px 16px;
            border: 1.5px solid var(--color-border);
            border-radius: var(--radius-md);
            font-size: 0.9rem;
            min-width: 220px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            background: var(--color-bg);
        }
        .subscribe-form input[type="email"]:focus {
            outline: none;
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(200, 164, 92, 0.12);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #fff;
            border-top: 1px solid var(--color-border-light);
            padding: var(--space-2xl) 0 var(--space-lg);
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-xl);
            padding-bottom: var(--space-xl);
            border-bottom: 1px solid var(--color-border-light);
        }
        .footer-logo {
            font-family: var(--font-display);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--space-sm);
            letter-spacing: 0.03em;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            line-height: 1.6;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--space-sm);
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            padding: 6px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--space-sm);
            padding-top: var(--space-md);
            font-size: 0.82rem;
            color: var(--color-text-muted);
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-lg);
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== Utility ========== */
        .mt-lg {
            margin-top: var(--space-lg);
        }
        .mt-xl {
            margin-top: var(--space-xl);
        }
        .text-center {
            text-align: center;
        }
        .bg-white {
            background: #fff;
        }
        .rounded-lg {
            border-radius: var(--radius-lg);
        }

/* roulang page: category1 */
:root {
            --color-primary: #1a1a2e;
            --color-primary-light: #252540;
            --color-accent: #c9a96e;
            --color-accent-hover: #b8954f;
            --color-accent-light: #f5eedf;
            --color-bg: #fafaf8;
            --color-bg-alt: #f3f2ed;
            --color-surface: #ffffff;
            --color-text: #1c1c1c;
            --color-text-soft: #5a5a5a;
            --color-text-muted: #8a8a82;
            --color-border: #e6e4dc;
            --color-border-light: #f0efe9;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 22px;
            --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 14px 36px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.14);
            --space-xs: 6px;
            --space-sm: 12px;
            --space-md: 20px;
            --space-lg: 32px;
            --space-xl: 48px;
            --space-2xl: 64px;
            --space-3xl: 80px;
            --font-heading: 'Georgia', 'Noto Serif SC', 'STSong', 'Songti SC', 'SimSun', serif;
            --font-body: 'Inter', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Monaco', monospace;
            --transition-fast: 0.18s ease-out;
            --transition-smooth: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --max-width-narrow: 880px;
            --nav-height: 68px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            text-rendering: optimizeLegibility;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        button {
            font-family: var(--font-body);
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }

        input {
            font-family: var(--font-body);
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            font-weight: 600;
            line-height: 1.3;
            color: var(--color-primary);
        }

        h1 {
            font-size: clamp(28px, 3.8vw, 44px);
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: clamp(22px, 2.6vw, 32px);
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: clamp(17px, 1.5vw, 22px);
        }
        h4 {
            font-size: clamp(14px, 1.1vw, 17px);
            font-family: var(--font-body);
            font-weight: 600;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: var(--space-md);
            padding-right: var(--space-md);
        }

        .container-narrow {
            max-width: var(--max-width-narrow);
        }

        /* ===== HEADER & NAV ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .nav-logo {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }
        .nav-logo:hover {
            color: var(--color-accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-links::-webkit-scrollbar {
            display: none;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 15px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-soft);
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--color-primary);
            background: var(--color-bg-alt);
        }
        .nav-links a.active {
            color: var(--color-accent);
            background: var(--color-accent-light);
            font-weight: 600;
        }
        .nav-links a.nav-cta {
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            padding: 9px 20px;
            border-radius: var(--radius-md);
            margin-left: var(--space-xs);
            transition: all var(--transition-smooth);
        }
        .nav-links a.nav-cta:hover {
            background: var(--color-accent-hover);
            color: #fff;
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
        }
        .nav-links a.nav-cta:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: background var(--transition-fast);
        }
        .nav-toggle:hover {
            background: var(--color-bg-alt);
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: all var(--transition-smooth);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== PAGE BANNER ===== */
        .page-banner {
            background: var(--color-primary);
            background-image: url('assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: var(--space-2xl) 0 var(--space-xl);
            color: #fff;
            position: relative;
            min-height: 200px;
            display: flex;
            align-items: flex-end;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26, 26, 46, 0.55) 0%, rgba(26, 26, 46, 0.82) 100%);
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .page-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: var(--space-sm);
            flex-wrap: wrap;
        }
        .page-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color var(--transition-fast);
        }
        .page-banner .breadcrumb a:hover {
            color: #fff;
        }
        .page-banner .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.7rem;
        }
        .page-banner h1 {
            color: #fff;
            font-size: clamp(26px, 3.2vw, 40px);
            letter-spacing: -0.02em;
        }
        .page-banner .banner-subtitle {
            color: rgba(255, 255, 255, 0.8);
            margin-top: var(--space-xs);
            font-size: 1rem;
            max-width: 600px;
        }

        /* ===== MAIN LAYOUT ===== */
        .main-content {
            flex: 1;
            padding: var(--space-xl) 0 var(--space-3xl);
        }
        .content-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: var(--space-xl);
            align-items: start;
        }

        /* ===== FILTER TAGS ===== */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-xs);
            margin-bottom: var(--space-lg);
            padding-bottom: var(--space-md);
            border-bottom: 1px solid var(--color-border-light);
        }
        .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            color: var(--color-text-soft);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .filter-tag:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: var(--color-accent-light);
        }
        .filter-tag.active {
            background: var(--color-accent);
            color: #fff;
            border-color: var(--color-accent);
            font-weight: 600;
        }

        /* ===== ARTICLE CARDS ===== */
        .articles-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: var(--space-md);
        }
        .article-card {
            display: grid;
            grid-template-columns: 260px 1fr;
            gap: var(--space-md);
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition-smooth);
            cursor: pointer;
            min-height: 180px;
        }
        .article-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-border);
            transform: translateY(-2px);
        }
        .article-card:focus-within {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: var(--radius-lg);
        }
        .article-card .card-image {
            position: relative;
            overflow: hidden;
            background: var(--color-bg-alt);
            min-height: 180px;
            height: 100%;
        }
        .article-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .article-card:hover .card-image img {
            transform: scale(1.04);
        }
        .article-card .card-image .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 12px;
            letter-spacing: 0.02em;
            z-index: 2;
            box-shadow: var(--shadow-xs);
        }
        .article-card .card-body {
            padding: var(--space-md) var(--space-md) var(--space-md) 0;
            display: flex;
            flex-direction: column;
            gap: var(--space-xs);
            justify-content: center;
        }
        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            font-size: 0.78rem;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }
        .article-card .card-meta .meta-dot {
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--color-border);
            flex-shrink: 0;
        }
        .article-card .card-title {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--color-primary);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }
        .article-card:hover .card-title {
            color: var(--color-accent);
        }
        .article-card .card-excerpt {
            font-size: 0.88rem;
            color: var(--color-text-soft);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .article-card .card-tags .tag {
            font-size: 0.72rem;
            padding: 3px 9px;
            border-radius: 10px;
            background: var(--color-bg-alt);
            color: var(--color-text-muted);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
        }
        .article-card .card-tags .tag:hover {
            background: var(--color-accent-light);
            color: var(--color-accent);
            border-color: var(--color-accent);
        }

        /* ===== SIDEBAR ===== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: var(--space-lg);
            position: sticky;
            top: calc(var(--nav-height) + var(--space-md));
        }
        .sidebar-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: var(--space-md);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
        }
        .sidebar-card h4 {
            font-family: var(--font-heading);
            font-size: 1rem;
            margin-bottom: var(--space-sm);
            color: var(--color-primary);
            letter-spacing: -0.01em;
        }
        .sidebar-card .hot-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--color-border-light);
            font-size: 0.88rem;
            color: var(--color-text-soft);
            transition: color var(--transition-fast);
            cursor: pointer;
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }
        .sidebar-card .hot-list li:last-child {
            border-bottom: none;
        }
        .sidebar-card .hot-list li:hover {
            color: var(--color-accent);
        }
        .sidebar-card .hot-list li .hot-num {
            font-family: var(--font-heading);
            font-weight: 700;
            color: var(--color-accent);
            font-size: 1.1rem;
            flex-shrink: 0;
            min-width: 24px;
            line-height: 1;
        }
        .sidebar-card .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .sidebar-card .tag-cloud .tag-pill {
            font-size: 0.75rem;
            padding: 5px 11px;
            border-radius: 14px;
            background: var(--color-bg-alt);
            color: var(--color-text-soft);
            border: 1px solid transparent;
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .sidebar-card .tag-cloud .tag-pill:hover {
            background: var(--color-accent-light);
            color: var(--color-accent);
            border-color: var(--color-accent);
        }
        .sidebar-card .subscribe-mini {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .sidebar-card .subscribe-mini input {
            flex: 1;
            min-width: 140px;
            padding: 9px 14px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            background: var(--color-bg);
            font-size: 0.85rem;
            transition: border-color var(--transition-fast);
            outline: none;
        }
        .sidebar-card .subscribe-mini input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(201, 169, 110, 0.12);
        }
        .sidebar-card .subscribe-mini button {
            padding: 9px 16px;
            border-radius: var(--radius-sm);
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.85rem;
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }
        .sidebar-card .subscribe-mini button:hover {
            background: var(--color-accent-hover);
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card .subscribe-mini button:active {
            transform: scale(0.97);
        }

        /* ===== PAGINATION ===== */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            margin-top: var(--space-xl);
            flex-wrap: wrap;
        }
        .pagination .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 10px;
            border-radius: var(--radius-sm);
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--color-text-soft);
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .pagination .page-btn:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: var(--color-accent-light);
        }
        .pagination .page-btn.active {
            background: var(--color-accent);
            color: #fff;
            border-color: var(--color-accent);
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }
        .pagination .page-btn:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        /* ===== CTA SECTION ===== */
        .cta-section {
            background: var(--color-primary);
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: var(--space-2xl) 0;
            margin-top: var(--space-2xl);
            text-align: center;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(26, 26, 46, 0.78);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            margin-bottom: var(--space-sm);
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            max-width: 500px;
            margin: 0 auto var(--space-md);
            font-size: 0.95rem;
        }
        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-md);
        }
        .cta-section .cta-btn:hover {
            background: var(--color-accent-hover);
            color: #fff;
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .cta-section .cta-btn:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.75);
            padding: var(--space-2xl) 0 var(--space-md);
            font-size: 0.88rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-xl);
            margin-bottom: var(--space-xl);
        }
        .footer-logo {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--space-sm);
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            font-size: 0.82rem;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.9rem;
            margin-bottom: var(--space-sm);
            font-family: var(--font-body);
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            padding: 5px 0;
            font-size: 0.84rem;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: var(--space-md);
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-sm);
            justify-content: space-between;
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.78rem;
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .content-layout {
                grid-template-columns: 1fr 280px;
                gap: var(--space-md);
            }
            .article-card {
                grid-template-columns: 200px 1fr;
                gap: var(--space-sm);
            }
            .article-card .card-body {
                padding: var(--space-sm) var(--space-sm) var(--space-sm) 0;
            }
            .article-card .card-title {
                font-size: 1rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-lg);
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--color-surface);
                flex-direction: column;
                align-items: stretch;
                padding: var(--space-sm) var(--space-md);
                gap: 2px;
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition-smooth);
                z-index: 99;
                max-height: 70vh;
                overflow-y: auto;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
            }
            .nav-links a {
                padding: 11px 16px;
                border-radius: var(--radius-sm);
                font-size: 0.95rem;
            }
            .nav-links a.nav-cta {
                margin-left: 0;
                text-align: center;
                justify-content: center;
                margin-top: 4px;
            }
            .content-layout {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }
            .sidebar {
                position: static;
                order: 3;
            }
            .article-card {
                grid-template-columns: 1fr;
                grid-template-rows: auto auto;
            }
            .article-card .card-image {
                min-height: 200px;
                max-height: 260px;
                height: auto;
            }
            .article-card .card-body {
                padding: var(--space-sm) var(--space-md) var(--space-md);
            }
            .page-banner {
                min-height: 160px;
                padding: var(--space-lg) 0 var(--space-md);
            }
            .filter-bar {
                gap: 5px;
                overflow-x: auto;
                flex-wrap: nowrap;
                padding-bottom: var(--space-sm);
            }
            .filter-tag {
                font-size: 0.8rem;
                padding: 6px 13px;
                flex-shrink: 0;
            }
            .pagination .page-btn {
                min-width: 34px;
                height: 34px;
                font-size: 0.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }
            .cta-section {
                padding: var(--space-xl) 0;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: var(--space-sm);
                padding-right: var(--space-sm);
            }
            .page-banner h1 {
                font-size: 22px;
            }
            .article-card .card-image {
                min-height: 170px;
                max-height: 200px;
            }
            .article-card .card-title {
                font-size: 0.95rem;
            }
            .article-card .card-excerpt {
                font-size: 0.8rem;
                -webkit-line-clamp: 3;
            }
            .sidebar-card {
                padding: var(--space-sm);
            }
            .pagination {
                gap: 3px;
            }
            .pagination .page-btn {
                min-width: 30px;
                height: 30px;
                font-size: 0.75rem;
                padding: 0 7px;
            }
            .cta-section h2 {
                font-size: 1.2rem;
            }
            .cta-section p {
                font-size: 0.85rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1B1F3B;
            --primary-light: #2A2F52;
            --primary-dark: #121530;
            --accent: #C8A45C;
            --accent-light: #D9BC7A;
            --accent-dark: #A8863E;
            --bg: #F8F7F4;
            --bg-alt: #F0EEE8;
            --surface: #FFFFFF;
            --text: #1B1F3B;
            --text-secondary: #5A5F72;
            --text-muted: #8B8F9E;
            --border: #E0DDD6;
            --border-light: #EDEAE4;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(27, 31, 59, 0.06);
            --shadow: 0 4px 16px rgba(27, 31, 59, 0.08);
            --shadow-md: 0 8px 28px rgba(27, 31, 59, 0.10);
            --shadow-lg: 0 16px 48px rgba(27, 31, 59, 0.12);
            --shadow-xl: 0 24px 64px rgba(27, 31, 59, 0.14);
            --space-xs: 4px;
            --space-sm: 8px;
            --space: 16px;
            --space-md: 24px;
            --space-lg: 32px;
            --space-xl: 48px;
            --space-2xl: 64px;
            --space-3xl: 80px;
            --transition-fast: 0.18s ease;
            --transition: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-display: 'Georgia', 'Noto Serif SC', 'STSong', 'Songti SC', serif;
            --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Monaco', 'Courier New', monospace;
            --max-width: 1200px;
            --nav-height: 68px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            text-rendering: optimizeLegibility;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }

        input {
            font-family: inherit;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--surface);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            font-family: var(--font-display);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.03em;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .nav-brand .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            font-weight: 700;
            letter-spacing: 0;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--bg-alt);
            border-radius: var(--radius-lg);
            padding: 5px 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.01em;
        }

        .nav-links a:hover {
            color: var(--primary);
            background: rgba(27, 31, 59, 0.04);
        }

        .nav-links a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: var(--shadow-sm);
            font-weight: 600;
        }

        .nav-links a.nav-cta {
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            padding: 8px 20px;
            margin-left: 4px;
            box-shadow: var(--shadow-sm);
            letter-spacing: 0.02em;
        }

        .nav-links a.nav-cta:hover {
            background: var(--accent-dark);
            color: #fff;
            box-shadow: var(--shadow);
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px;
            z-index: 1001;
            background: none;
            border: none;
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* Page Banner */
        .page-banner {
            position: relative;
            background: var(--primary);
            background-image: url('assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            min-height: 340px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(27, 31, 59, 0.88) 0%, rgba(27, 31, 59, 0.65) 50%, rgba(27, 31, 59, 0.78) 100%);
            z-index: 1;
        }

        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
            padding: var(--space-xl) 0;
        }

        .page-banner .banner-label {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            margin-bottom: var(--space);
            text-transform: uppercase;
        }

        .page-banner h1 {
            font-family: var(--font-display);
            font-size: 2.6rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.25;
            margin-bottom: var(--space);
            letter-spacing: 0.02em;
        }

        .page-banner .banner-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.65;
            max-width: 540px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: var(--space);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.45);
        }
        .breadcrumb .current {
            color: var(--accent-light);
        }

        /* Main Content */
        .main-content {
            flex: 1;
            padding: var(--space-2xl) 0;
        }

        /* Section */
        .section {
            padding: var(--space-xl) 0;
        }
        .section+.section {
            padding-top: 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: var(--space-xl);
        }
        .section-header h2 {
            font-family: var(--font-display);
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.02em;
            margin-bottom: var(--space-sm);
        }
        .section-header .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .section-header.left {
            text-align: left;
        }
        .section-header.left .section-subtitle {
            margin: 0;
        }

        /* Guide Overview */
        .guide-overview {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-xl);
            align-items: center;
            background: var(--surface);
            border-radius: var(--radius-xl);
            padding: var(--space-xl);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
        }
        .guide-overview .overview-text h3 {
            font-family: var(--font-display);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: var(--space);
        }
        .guide-overview .overview-text p {
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: var(--space);
        }
        .guide-overview .overview-stats {
            display: flex;
            gap: var(--space-lg);
            flex-wrap: wrap;
        }
        .guide-overview .stat-item {
            text-align: center;
            min-width: 80px;
        }
        .guide-overview .stat-number {
            font-family: var(--font-display);
            font-size: 2rem;
            font-weight: 700;
            color: var(--accent);
            line-height: 1;
        }
        .guide-overview .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .guide-overview .overview-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .guide-overview .overview-image img {
            width: 100%;
            height: 280px;
            object-fit: cover;
        }

        /* Guide Categories Grid */
        .guide-categories-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-lg);
        }
        .guide-category-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            cursor: pointer;
            display: flex;
            flex-direction: column;
        }
        .guide-category-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .guide-category-card .card-image {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .guide-category-card .card-body {
            padding: var(--space-lg);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-category-card .card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent);
            background: rgba(200, 164, 92, 0.1);
            padding: 3px 10px;
            border-radius: 12px;
            margin-bottom: var(--space-sm);
            letter-spacing: 0.03em;
            align-self: flex-start;
        }
        .guide-category-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: var(--space-sm);
            letter-spacing: 0.01em;
        }
        .guide-category-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
        }
        .guide-category-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--primary);
            margin-top: var(--space);
            transition: color var(--transition-fast);
        }
        .guide-category-card .card-link:hover {
            color: var(--accent);
        }
        .guide-category-card .card-link::after {
            content: '→';
            transition: transform var(--transition-fast);
        }
        .guide-category-card .card-link:hover::after {
            transform: translateX(3px);
        }

        /* Steps Flow */
        .steps-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-lg);
            position: relative;
        }
        .step-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            position: relative;
            transition: all var(--transition);
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .step-card .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: var(--space);
            font-family: var(--font-display);
        }
        .step-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: var(--space-sm);
        }
        .step-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.55;
        }
        .step-connector {
            display: none;
        }

        /* Best Practices */
        .practices-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--space-lg);
        }
        .practice-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            display: flex;
            gap: 0;
            transition: all var(--transition);
        }
        .practice-card:hover {
            box-shadow: var(--shadow-lg);
        }
        .practice-card .practice-image {
            width: 180px;
            flex-shrink: 0;
            object-fit: cover;
            min-height: 100%;
        }
        .practice-card .practice-body {
            padding: var(--space-lg);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .practice-card .practice-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: var(--space-sm);
        }
        .practice-card .practice-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .practice-card .practice-body .highlight-tip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--accent);
            margin-top: var(--space-sm);
            background: rgba(200, 164, 92, 0.08);
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            align-self: flex-start;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--space);
        }
        .faq-item {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:hover {
            border-color: var(--border);
        }
        .faq-item.open {
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--space-md);
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--primary);
            gap: var(--space);
            user-select: none;
            transition: background var(--transition-fast);
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            font-family: inherit;
        }
        .faq-question:hover {
            background: var(--bg-alt);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: all var(--transition-fast);
            font-size: 0.8rem;
            color: var(--text-secondary);
        }
        .faq-item.open .faq-icon {
            background: var(--accent);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 var(--space-md) var(--space-md);
            color: var(--text-secondary);
            line-height: 1.7;
            font-size: 0.93rem;
        }

        /* CTA Section */
        .cta-section {
            background: var(--primary);
            border-radius: var(--radius-xl);
            padding: var(--space-2xl) var(--space-xl);
            text-align: center;
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(27, 31, 59, 0.86);
            z-index: 1;
        }
        .cta-section .cta-inner {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-family: var(--font-display);
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--space);
            letter-spacing: 0.02em;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.05rem;
            margin-bottom: var(--space-lg);
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }
        .cta-section .btn-group {
            display: flex;
            gap: var(--space);
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: var(--shadow);
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* Footer */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: var(--space-2xl) 0 var(--space-lg);
            margin-top: var(--space-2xl);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-xl);
            margin-bottom: var(--space-xl);
        }
        .footer-logo {
            font-family: var(--font-display);
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--space);
            letter-spacing: 0.03em;
        }
        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--space);
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--accent-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: var(--space-lg);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--space-sm);
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .guide-categories-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-flow {
                grid-template-columns: repeat(2, 1fr);
            }
            .practices-grid {
                grid-template-columns: 1fr;
            }
            .guide-overview {
                grid-template-columns: 1fr;
            }
            .guide-overview .overview-image {
                order: -1;
            }
            .guide-overview .overview-image img {
                height: 220px;
            }
            .page-banner h1 {
                font-size: 2.2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .container {
                padding: 0 var(--space-md);
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 60px;
            }
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                bottom: 0;
                flex-direction: column;
                background: var(--surface);
                border-radius: 0;
                padding: var(--space-lg);
                gap: 4px;
                align-items: stretch;
                overflow-y: auto;
                transform: translateX(100%);
                transition: transform var(--transition);
                z-index: 999;
                box-shadow: var(--shadow-xl);
            }
            .nav-links.open {
                transform: translateX(0);
            }
            .nav-links a {
                padding: 14px 16px;
                font-size: 1rem;
                border-radius: var(--radius);
                justify-content: flex-start;
            }
            .nav-links a.nav-cta {
                margin-left: 0;
                margin-top: var(--space-sm);
                justify-content: center;
            }
            .nav-toggle {
                display: flex;
            }
            .guide-categories-grid {
                grid-template-columns: 1fr;
            }
            .steps-flow {
                grid-template-columns: 1fr 1fr;
                gap: var(--space);
            }
            .practice-card {
                flex-direction: column;
            }
            .practice-card .practice-image {
                width: 100%;
                height: 180px;
                min-height: auto;
            }
            .page-banner {
                min-height: 260px;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .page-banner .banner-desc {
                font-size: 0.95rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .guide-overview {
                padding: var(--space-lg);
            }
            .guide-overview .overview-stats {
                gap: var(--space);
            }
            .guide-overview .stat-number {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 var(--space);
            }
            .steps-flow {
                grid-template-columns: 1fr;
                gap: var(--space);
            }
            .page-banner h1 {
                font-size: 1.5rem;
            }
            .page-banner {
                min-height: 220px;
            }
            .cta-section {
                padding: var(--space-xl) var(--space-lg);
            }
            .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: var(--space);
            }
            .faq-answer-inner {
                font-size: 0.85rem;
            }
            .guide-overview .overview-stats {
                justify-content: center;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #0f172a;
            --color-primary-soft: #1e293b;
            --color-accent: #c59b4e;
            --color-accent-hover: #b0883a;
            --color-accent-light: #f5efe3;
            --color-bg: #fafaf8;
            --color-surface: #ffffff;
            --color-text: #1c1917;
            --color-text-soft: #78716c;
            --color-text-muted: #9a948e;
            --color-border: #e7e5e4;
            --color-border-light: #f0eeec;
            --color-success: #059669;
            --color-white: #ffffff;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-2xl: 24px;
            --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
            --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.07), 0 2px 4px rgba(15, 23, 42, 0.04);
            --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.09), 0 4px 8px rgba(15, 23, 42, 0.05);
            --shadow-xl: 0 20px 48px rgba(15, 23, 42, 0.12), 0 8px 16px rgba(15, 23, 42, 0.06);
            --space-xs: 0.5rem;
            --space-sm: 0.75rem;
            --space-md: 1rem;
            --space-lg: 1.5rem;
            --space-xl: 2rem;
            --space-2xl: 3rem;
            --space-3xl: 4rem;
            --space-4xl: 5rem;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --transition-fast: 180ms ease;
            --transition-base: 240ms ease;
            --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --nav-height: 68px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
            transition: all var(--transition-fast);
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        input {
            font-family: inherit;
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 600;
            color: var(--color-primary);
        }

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

        @media (max-width: 768px) {
            .container {
                padding: 0 var(--space-lg);
            }
        }

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

        /* Header / Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            height: var(--nav-height);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-xl);
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
            font-weight: 700;
            font-size: 1.25rem;
            letter-spacing: -0.01em;
            color: var(--color-primary);
            white-space: nowrap;
            transition: opacity var(--transition-fast);
        }
        .logo-link:hover {
            opacity: 0.8;
        }
        .logo-dot {
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--color-accent);
            display: inline-block;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.15rem;
            flex-wrap: nowrap;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 0.45rem 0.85rem;
            border-radius: var(--radius-md);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-soft);
            white-space: nowrap;
            transition: all var(--transition-fast);
            letter-spacing: 0.01em;
        }
        .nav-links a:hover {
            color: var(--color-primary);
            background: var(--color-accent-light);
        }
        .nav-links a.active {
            color: var(--color-accent);
            background: var(--color-accent-light);
            font-weight: 600;
        }
        .nav-links .nav-cta {
            background: var(--color-accent);
            color: var(--color-white);
            font-weight: 600;
            padding: 0.5rem 1.15rem;
            border-radius: var(--radius-md);
            margin-left: 0.4rem;
            transition: all var(--transition-base);
        }
        .nav-links .nav-cta:hover {
            background: var(--color-accent-hover);
            color: var(--color-white);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
            z-index: 110;
        }
        .mobile-toggle:hover {
            background: var(--color-accent-light);
        }
        .mobile-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: all var(--transition-base);
            transform-origin: center;
        }
        .mobile-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .mobile-toggle.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .mobile-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        @media (max-width: 1024px) {
            .nav-links {
                gap: 0.05rem;
            }
            .nav-links a {
                padding: 0.4rem 0.6rem;
                font-size: 0.82rem;
            }
            .nav-links .nav-cta {
                padding: 0.4rem 0.8rem;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 860px) {
            .mobile-toggle {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                padding: var(--space-xl) var(--space-lg);
                gap: 0.3rem;
                transform: translateX(100%);
                transition: transform var(--transition-slow);
                z-index: 99;
                overflow-y: auto;
                box-shadow: var(--shadow-xl);
            }
            .nav-links.open {
                transform: translateX(0);
            }
            .nav-links a {
                font-size: 1.05rem;
                padding: 0.85rem 1.1rem;
                border-radius: var(--radius-lg);
                justify-content: flex-start;
                border-bottom: 1px solid var(--color-border-light);
            }
            .nav-links .nav-cta {
                margin-left: 0;
                justify-content: center;
                margin-top: var(--space-md);
                font-size: 1.05rem;
                padding: 0.9rem 1.5rem;
                border-radius: var(--radius-lg);
            }
            body.nav-open {
                overflow: hidden;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                padding: 0 var(--space-md);
            }
            .logo-link {
                font-size: 1.1rem;
            }
            .nav-links a {
                font-size: 0.95rem;
                padding: 0.75rem 0.9rem;
            }
        }

        /* Main */
        .page-main {
            flex: 1;
        }

        /* Section base */
        .section {
            padding: var(--space-4xl) 0;
        }
        .section-sm {
            padding: var(--space-3xl) 0;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: var(--space-sm);
            background: var(--color-accent-light);
            padding: 0.3rem 0.75rem;
            border-radius: 20px;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: var(--space-md);
            color: var(--color-primary);
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--color-text-soft);
            max-width: 640px;
            line-height: 1.7;
        }
        .section-header {
            text-align: center;
            margin-bottom: var(--space-3xl);
        }
        .section-header .section-subtitle {
            margin: 0 auto;
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--space-3xl) 0;
            }
            .section-sm {
                padding: var(--space-2xl) 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .section-subtitle {
                font-size: 1rem;
            }
        }

        /* Banner */
        .page-banner {
            position: relative;
            background: var(--color-primary-soft);
            background-image: url('assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 320px;
            display: flex;
            align-items: center;
            isolation: isolate;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.82) 0%, rgba(30, 41, 59, 0.7) 60%, rgba(15, 23, 42, 0.55) 100%);
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: var(--space-lg);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--color-accent);
        }
        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.7rem;
        }
        .breadcrumb .current {
            color: var(--color-accent);
            font-weight: 500;
        }
        .banner-title {
            font-size: 2.8rem;
            font-weight: 700;
            letter-spacing: -0.03em;
            color: #ffffff;
            margin-bottom: var(--space-md);
            line-height: 1.2;
        }
        .banner-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .page-banner {
                min-height: 240px;
            }
            .banner-title {
                font-size: 1.9rem;
            }
            .banner-subtitle {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .page-banner {
                min-height: 200px;
            }
            .banner-title {
                font-size: 1.55rem;
            }
            .banner-subtitle {
                font-size: 0.9rem;
            }
        }

        /* Service Intro */
        .service-intro {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--space-3xl);
            align-items: center;
        }
        .service-intro-image {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 4/3;
        }
        .service-intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .service-intro-content h3 {
            font-size: 1.6rem;
            margin-bottom: var(--space-md);
            letter-spacing: -0.01em;
        }
        .service-intro-content p {
            color: var(--color-text-soft);
            margin-bottom: var(--space-md);
            line-height: 1.75;
        }
        .service-intro-stats {
            display: flex;
            gap: var(--space-xl);
            flex-wrap: wrap;
            margin-top: var(--space-lg);
        }
        .intro-stat {
            text-align: center;
            min-width: 80px;
        }
        .intro-stat .stat-num {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-accent);
            letter-spacing: -0.02em;
        }
        .intro-stat .stat-label {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            margin-top: 2px;
        }

        @media (max-width: 768px) {
            .service-intro {
                grid-template-columns: 1fr;
                gap: var(--space-xl);
            }
            .service-intro-image {
                aspect-ratio: 16/9;
                order: -1;
            }
            .service-intro-content h3 {
                font-size: 1.4rem;
            }
        }

        /* Service Cards Grid */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-xl);
        }
        .service-card {
            background: var(--color-surface);
            border-radius: var(--radius-xl);
            padding: var(--space-2xl) var(--space-xl);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: var(--space-md);
            position: relative;
            overflow: hidden;
        }
        .service-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--color-accent);
        }
        .service-card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-lg);
            background: var(--color-accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--color-accent);
            flex-shrink: 0;
        }
        .service-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            letter-spacing: -0.01em;
            color: var(--color-primary);
        }
        .service-card p {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            line-height: 1.65;
            flex: 1;
        }
        .service-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-accent);
            transition: gap var(--transition-fast);
        }
        .service-card .card-link:hover {
            gap: 0.6rem;
        }
        .service-card .card-link::after {
            content: '→';
            transition: transform var(--transition-fast);
        }
        .service-card .card-link:hover::after {
            transform: translateX(3px);
        }

        @media (max-width: 1024px) {
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-lg);
            }
        }
        @media (max-width: 600px) {
            .services-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .service-card {
                padding: var(--space-lg);
            }
        }

        /* Process Steps */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-xl);
            position: relative;
        }
        .process-step {
            text-align: center;
            position: relative;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: var(--space-md);
        }
        .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--color-primary);
            color: var(--color-white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.3rem;
            letter-spacing: -0.02em;
            position: relative;
            z-index: 2;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-base);
        }
        .process-step:hover .step-number {
            background: var(--color-accent);
            box-shadow: var(--shadow-lg);
            transform: scale(1.06);
        }
        .process-step h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-primary);
        }
        .process-step p {
            font-size: 0.85rem;
            color: var(--color-text-soft);
            line-height: 1.6;
        }
        .process-steps::before {
            content: '';
            position: absolute;
            top: 28px;
            left: 15%;
            right: 15%;
            height: 2px;
            background: var(--color-border);
            z-index: 1;
            border-radius: 1px;
        }

        @media (max-width: 768px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-xl) var(--space-lg);
            }
            .process-steps::before {
                display: none;
            }
        }
        @media (max-width: 520px) {
            .process-steps {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-lg) var(--space-md);
            }
            .step-number {
                width: 44px;
                height: 44px;
                font-size: 1.1rem;
            }
            .process-step h4 {
                font-size: 0.95rem;
            }
        }

        /* Data Dashboard */
        .dashboard-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-lg);
        }
        .dashboard-card {
            background: var(--color-surface);
            border-radius: var(--radius-xl);
            padding: var(--space-xl) var(--space-lg);
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .dashboard-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--color-accent);
        }
        .dashboard-icon {
            font-size: 2rem;
            margin-bottom: var(--space-sm);
        }
        .dashboard-num {
            font-size: 2.4rem;
            font-weight: 700;
            letter-spacing: -0.03em;
            color: var(--color-accent);
            line-height: 1;
        }
        .dashboard-label {
            font-size: 0.85rem;
            color: var(--color-text-soft);
            margin-top: var(--space-xs);
        }

        @media (max-width: 768px) {
            .dashboard-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-md);
            }
            .dashboard-num {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 520px) {
            .dashboard-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-sm);
            }
            .dashboard-card {
                padding: var(--space-lg) var(--space-md);
            }
            .dashboard-num {
                font-size: 1.5rem;
            }
        }

        /* Highlights */
        .highlights-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--space-xl);
        }
        .highlight-card {
            display: flex;
            gap: var(--space-lg);
            align-items: flex-start;
            background: var(--color-surface);
            border-radius: var(--radius-xl);
            padding: var(--space-xl);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .highlight-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-accent);
        }
        .highlight-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-lg);
            background: var(--color-accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            flex-shrink: 0;
        }
        .highlight-text h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--color-primary);
        }
        .highlight-text p {
            font-size: 0.88rem;
            color: var(--color-text-soft);
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .highlights-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .highlight-card {
                padding: var(--space-lg);
            }
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }
        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-xs);
        }
        .faq-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: var(--space-lg) var(--space-xl);
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: var(--space-md);
            background: transparent;
            transition: background var(--transition-fast);
            letter-spacing: 0.01em;
        }
        .faq-question:hover {
            background: var(--color-accent-light);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 2px solid var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: all var(--transition-base);
            font-size: 0.8rem;
            color: var(--color-accent);
            font-weight: 700;
        }
        .faq-item.open .faq-icon {
            background: var(--color-accent);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            padding: 0 var(--space-xl);
            color: var(--color-text-soft);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 var(--space-xl) var(--space-lg);
        }

        @media (max-width: 520px) {
            .faq-question {
                padding: var(--space-md) var(--space-lg);
                font-size: 0.92rem;
            }
            .faq-answer {
                padding: 0 var(--space-lg);
                font-size: 0.85rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 var(--space-lg) var(--space-md);
            }
        }

        /* CTA */
        .cta-section {
            background: var(--color-primary);
            border-radius: var(--radius-2xl);
            padding: var(--space-3xl) var(--space-3xl);
            text-align: center;
            position: relative;
            overflow: hidden;
            isolation: isolate;
            margin: 0 var(--space-xl);
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 20%, rgba(197, 155, 78, 0.18) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 80%, rgba(197, 155, 78, 0.1) 0%, transparent 50%);
            z-index: 1;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2rem;
            margin-bottom: var(--space-md);
            letter-spacing: -0.02em;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.05rem;
            margin-bottom: var(--space-xl);
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 1.8rem;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.01em;
            transition: all var(--transition-base);
            white-space: nowrap;
        }
        .btn-accent {
            background: var(--color-accent);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }
        .btn-accent:hover {
            background: var(--color-accent-hover);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .btn-outline-light {
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #fff;
        }
        .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }
        .cta-buttons {
            display: flex;
            gap: var(--space-md);
            justify-content: center;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .cta-section {
                margin: 0 var(--space-md);
                padding: var(--space-2xl) var(--space-xl);
                border-radius: var(--radius-xl);
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .cta-section {
                margin: 0 var(--space-sm);
                padding: var(--space-xl) var(--space-lg);
                border-radius: var(--radius-lg);
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.75);
            padding: var(--space-3xl) 0 var(--space-xl);
            margin-top: var(--space-4xl);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: var(--space-2xl);
            padding-bottom: var(--space-2xl);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--space-sm);
            letter-spacing: -0.01em;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.85rem;
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: var(--space-md);
            letter-spacing: 0.02em;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            padding: 0.25rem 0;
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            padding-top: var(--space-lg);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--space-sm);
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-xl);
            }
            .footer-brand {
                grid-column: 1/-1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 4px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }
            .site-footer {
                padding: var(--space-2xl) 0 var(--space-lg);
            }
        }

        /* Utility */
        .bg-light {
            background: var(--color-surface);
        }
        .bg-soft {
            background: #f5f4f1;
        }
        .text-center {
            text-align: center;
        }

/* roulang page: category6 */
:root {
            --color-primary: #0f172a;
            --color-primary-light: #1e293b;
            --color-accent: #b8860b;
            --color-accent-hover: #9a6f0a;
            --color-accent-light: #fef3c7;
            --color-bg: #f8fafc;
            --color-bg-alt: #f1f5f9;
            --color-surface: #ffffff;
            --color-text: #1e293b;
            --color-text-soft: #475569;
            --color-text-muted: #64748b;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.07), 0 2px 6px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.09), 0 4px 10px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.11), 0 8px 20px rgba(0, 0, 0, 0.06);
            --space-xs: 0.5rem;
            --space-sm: 0.75rem;
            --space-md: 1rem;
            --space-lg: 1.5rem;
            --space-xl: 2rem;
            --space-2xl: 3rem;
            --space-3xl: 4rem;
            --space-4xl: 5rem;
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --max-width: 1200px;
            --nav-height: 68px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.65;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
        }

        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

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

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: var(--space-sm);
            font-weight: 700;
            font-size: 1.25rem;
            letter-spacing: -0.01em;
            color: var(--color-primary);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-brand .brand-icon {
            width: 34px;
            height: 34px;
            border-radius: var(--radius-sm);
            background: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.85rem;
            font-weight: 800;
            letter-spacing: 0;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.15rem;
            flex-wrap: wrap;
            justify-content: flex-end;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 0.45rem 0.85rem;
            border-radius: var(--radius-md);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-soft);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .nav-links a:hover {
            color: var(--color-primary);
            background: var(--color-bg-alt);
        }
        .nav-links a.active {
            color: var(--color-accent);
            background: var(--color-accent-light);
            font-weight: 600;
        }
        .nav-links .nav-cta {
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            padding: 0.5rem 1.1rem;
            border-radius: var(--radius-md);
            margin-left: 0.4rem;
            transition: all var(--transition-base);
        }
        .nav-links .nav-cta:hover {
            background: var(--color-accent-hover);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px;
            z-index: 101;
            background: none;
            border: none;
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--color-primary);
            border-radius: 3px;
            transition: all var(--transition-base);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ========== MAIN ========== */
        .site-main {
            flex: 1;
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            background: var(--color-primary-light);
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center 40%;
            background-repeat: no-repeat;
            padding: var(--space-4xl) 0;
            color: #fff;
            text-align: center;
            isolation: isolate;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 23, 42, 0.75) 0%, rgba(15, 23, 42, 0.88) 100%);
            z-index: 0;
        }
        .page-banner .container {
            position: relative;
            z-index: 1;
        }
        .page-banner .banner-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            padding: 0.4rem 1.1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            margin-bottom: var(--space-lg);
        }
        .page-banner h1 {
            font-size: clamp(2rem, 4vw, 2.8rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: var(--space-md);
        }
        .page-banner .banner-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .page-banner .banner-meta {
            display: flex;
            gap: var(--space-xl);
            justify-content: center;
            margin-top: var(--space-xl);
            flex-wrap: wrap;
        }
        .page-banner .banner-meta-item {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.8);
        }
        .page-banner .banner-meta-item .meta-num {
            font-weight: 700;
            font-size: 1.3rem;
            color: #fff;
        }

        /* ========== SECTION ========== */
        .section {
            padding: var(--space-3xl) 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        .section-header {
            text-align: center;
            margin-bottom: var(--space-2xl);
        }
        .section-header h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.01em;
            margin-bottom: var(--space-sm);
        }
        .section-header .section-subtitle {
            color: var(--color-text-muted);
            font-size: 0.95rem;
            max-width: 500px;
            margin: 0 auto;
        }
        .section-header .section-line {
            display: inline-block;
            width: 48px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 3px;
            margin-bottom: var(--space-md);
        }

        /* ========== TOPIC CARDS GRID ========== */
        .topics-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-xl);
        }
        .topic-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            border: 1px solid var(--color-border-light);
            position: relative;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }
        .topic-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--color-bg-alt);
        }
        .topic-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .topic-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }
        .topic-card .card-tag {
            position: absolute;
            top: var(--space-md);
            left: var(--space-md);
            background: var(--color-accent);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.3rem 0.75rem;
            border-radius: 50px;
            letter-spacing: 0.03em;
            z-index: 2;
        }
        .topic-card .card-body {
            padding: var(--space-lg);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .topic-card .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: var(--space-xs);
            line-height: 1.35;
        }
        .topic-card .card-body p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.6;
            flex: 1;
            margin-bottom: var(--space-md);
        }
        .topic-card .card-meta {
            display: flex;
            align-items: center;
            gap: var(--space-md);
            font-size: 0.8rem;
            color: var(--color-text-muted);
            border-top: 1px solid var(--color-border-light);
            padding-top: var(--space-sm);
        }
        .topic-card .card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .topic-card .card-arrow {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--color-accent);
            font-weight: 600;
            font-size: 0.9rem;
            transition: gap var(--transition-fast);
        }
        .topic-card:hover .card-arrow {
            gap: 8px;
        }

        /* ========== DEEP READ LIST ========== */
        .deep-read-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-md);
            max-width: 900px;
            margin: 0 auto;
        }
        .deep-read-item {
            display: flex;
            gap: var(--space-lg);
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            align-items: center;
        }
        .deep-read-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-border);
        }
        .deep-read-item .dr-number {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            background: var(--color-accent-light);
            color: var(--color-accent);
            font-weight: 800;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .deep-read-item .dr-content {
            flex: 1;
        }
        .deep-read-item .dr-content h4 {
            font-weight: 600;
            color: var(--color-primary);
            font-size: 1rem;
            margin-bottom: 2px;
        }
        .deep-read-item .dr-content p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            line-height: 1.5;
        }
        .deep-read-item .dr-badge {
            flex-shrink: 0;
            font-size: 0.75rem;
            font-weight: 500;
            padding: 0.35rem 0.8rem;
            border-radius: 50px;
            background: var(--color-bg-alt);
            color: var(--color-text-soft);
            white-space: nowrap;
        }

        /* ========== STATS STRIP ========== */
        .stats-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-xl);
            text-align: center;
        }
        .stat-item {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: var(--space-xl) var(--space-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .stat-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .stat-item .stat-icon {
            font-size: 2rem;
            margin-bottom: var(--space-sm);
            display: block;
        }
        .stat-item .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-accent);
            letter-spacing: -0.02em;
            line-height: 1;
            margin-bottom: 4px;
        }
        .stat-item .stat-label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }
        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--color-border);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: var(--space-lg);
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--space-md);
            cursor: pointer;
            background: none;
            border: none;
            transition: background var(--transition-fast);
        }
        .faq-question:hover {
            background: var(--color-bg-alt);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            transition: all var(--transition-base);
            color: var(--color-text-soft);
            font-weight: 700;
        }
        .faq-item.open .faq-icon {
            background: var(--color-accent);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            padding: 0 var(--space-lg);
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 var(--space-lg) var(--space-lg);
        }
        .faq-answer p {
            font-size: 0.9rem;
            color: var(--color-text-soft);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: var(--color-primary);
            color: #fff;
            text-align: center;
            padding: var(--space-3xl) 0;
            position: relative;
            isolation: isolate;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(184, 134, 11, 0.2) 0%, transparent 70%);
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 700;
            margin-bottom: var(--space-sm);
            letter-spacing: -0.01em;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: var(--space-xl);
            font-size: 1rem;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta-lg {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            padding: 0.85rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
            box-shadow: 0 8px 24px rgba(184, 134, 11, 0.35);
        }
        .btn-cta-lg:hover {
            background: var(--color-accent-hover);
            box-shadow: 0 12px 32px rgba(184, 134, 11, 0.5);
            transform: translateY(-2px);
            color: #fff;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.8);
            padding: var(--space-3xl) 0 var(--space-xl);
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-2xl);
            margin-bottom: var(--space-2xl);
        }
        .footer-logo {
            font-weight: 700;
            font-size: 1.2rem;
            color: #fff;
            margin-bottom: var(--space-sm);
            letter-spacing: -0.01em;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            font-size: 0.85rem;
            max-width: 300px;
        }
        .footer-col h4 {
            color: #fff;
            font-weight: 600;
            margin-bottom: var(--space-md);
            font-size: 0.95rem;
            letter-spacing: 0.02em;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.65);
            padding: 0.25rem 0;
            transition: color var(--transition-fast);
            font-size: 0.85rem;
        }
        .footer-col a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: var(--space-lg);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: var(--space-sm);
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .topics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-lg);
            }
            .stats-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-lg);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-xl);
            }
            .nav-links a {
                padding: 0.4rem 0.6rem;
                font-size: 0.82rem;
            }
            .nav-brand {
                font-size: 1.1rem;
            }
            .nav-brand .brand-icon {
                width: 28px;
                height: 28px;
                font-size: 0.7rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 60px;
            }
            .container {
                padding: 0 var(--space-md);
            }
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--color-surface);
                flex-direction: column;
                align-items: stretch;
                padding: var(--space-md);
                gap: 0;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                transition: transform var(--transition-base);
                z-index: 99;
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }
            .nav-links.open {
                transform: translateY(0);
            }
            .nav-links a {
                padding: 0.7rem 1rem;
                border-radius: var(--radius-sm);
                font-size: 0.95rem;
            }
            .nav-links .nav-cta {
                margin-left: 0;
                text-align: center;
                justify-content: center;
                margin-top: var(--space-sm);
            }
            .nav-toggle {
                display: flex;
            }
            .topics-grid {
                grid-template-columns: 1fr;
                gap: var(--space-md);
            }
            .stats-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-md);
            }
            .deep-read-item {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--space-sm);
            }
            .deep-read-item .dr-number {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-lg);
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .page-banner {
                padding: var(--space-2xl) 0;
            }
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .page-banner .banner-desc {
                font-size: 0.9rem;
            }
            .section {
                padding: var(--space-2xl) 0;
            }
        }

        @media (max-width: 520px) {
            .stats-strip {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-sm);
            }
            .stat-item {
                padding: var(--space-md) var(--space-sm);
            }
            .stat-item .stat-num {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .page-banner .banner-meta {
                gap: var(--space-md);
            }
            .topic-card .card-body h3 {
                font-size: 1rem;
            }
        }

/* roulang page: category5 */
:root {
            --color-primary: #1B2A4A;
            --color-primary-light: #25395e;
            --color-accent: #C8A96E;
            --color-accent-hover: #b89451;
            --color-emphasis: #2D7D8C;
            --color-emphasis-light: #3a9ba8;
            --color-bg: #F8F7F4;
            --color-bg-alt: #F0EFEA;
            --color-card: #FFFFFF;
            --color-text: #1a1a1a;
            --color-text-soft: #4a4a4a;
            --color-text-muted: #7B7D82;
            --color-border: #e5e3dd;
            --color-border-light: #f0efea;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.07), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.09), 0 4px 12px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.11), 0 8px 20px rgba(0, 0, 0, 0.06);
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 56px;
            --spacing-2xl: 72px;
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.45s ease;
            --font-heading: 'PingFang SC', 'Noto Sans SC', 'Helvetica Neue', 'Microsoft YaHei', sans-serif;
            --font-body: 'PingFang SC', 'Noto Sans SC', 'Inter', 'Microsoft YaHei', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-width: 320px;
            overflow-x: hidden;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            outline: none;
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        @media (max-width: 1024px) {
            .container {
                padding: 0 var(--spacing-sm);
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 14px;
            }
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            background: var(--color-card);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: var(--spacing-md);
        }
        .logo {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }
        .logo:hover {
            color: var(--color-accent);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-soft);
            border-radius: var(--radius-sm);
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.3px;
        }
        .nav-links a:hover {
            color: var(--color-primary);
            background: rgba(27, 42, 74, 0.04);
        }
        .nav-links a.active {
            color: var(--color-accent);
            font-weight: 600;
            background: rgba(200, 169, 110, 0.08);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
        }
        .nav-links .nav-cta {
            background: var(--color-primary);
            color: #fff !important;
            padding: 9px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            letter-spacing: 0.4px;
            transition: all var(--transition-base);
            margin-left: 4px;
        }
        .nav-links .nav-cta:hover {
            background: var(--color-primary-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .nav-links .nav-cta::after {
            display: none;
        }
        .mobile-menu-btn {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            color: var(--color-primary);
            font-size: 1.35rem;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }
        .mobile-menu-btn:hover {
            background: rgba(27, 42, 74, 0.06);
        }

        @media (max-width: 1024px) {
            .nav-links a {
                padding: 6px 10px;
                font-size: 0.82rem;
            }
            .nav-links .nav-cta {
                padding: 7px 14px;
                font-size: 0.82rem;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                height: 56px;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: 56px;
                left: 0;
                right: 0;
                background: var(--color-card);
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 10px 16px 16px;
                box-shadow: var(--shadow-lg);
                border-bottom: 1px solid var(--color-border);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all var(--transition-base);
                z-index: 99;
                max-height: 80vh;
                overflow-y: auto;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                padding: 12px 16px;
                font-size: 0.95rem;
                border-radius: var(--radius-sm);
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a.active {
                border-left: 3px solid var(--color-accent);
                border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            }
            .nav-links .nav-cta {
                margin-left: 0;
                margin-top: 8px;
                text-align: center;
                justify-content: center;
                border-radius: var(--radius-md);
                padding: 13px;
            }
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            background-image: url('assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            padding: var(--spacing-2xl) 0;
            min-height: 300px;
            display: flex;
            align-items: center;
            isolation: isolate;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(27, 42, 74, 0.88) 0%, rgba(27, 42, 74, 0.65) 50%, rgba(45, 125, 140, 0.45) 100%);
            z-index: 0;
        }
        .page-banner .container {
            position: relative;
            z-index: 1;
        }
        .page-banner-content {
            max-width: 680px;
        }
        .page-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: var(--spacing-sm);
            flex-wrap: wrap;
        }
        .page-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
            transition: color var(--transition-fast);
        }
        .page-banner .breadcrumb a:hover {
            color: var(--color-accent);
        }
        .page-banner .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.7rem;
        }
        .page-banner h1 {
            font-family: var(--font-heading);
            font-size: 2.6rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            line-height: 1.2;
            margin-bottom: var(--spacing-sm);
        }
        .page-banner .banner-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.6;
            max-width: 540px;
        }
        @media (max-width: 768px) {
            .page-banner {
                padding: var(--spacing-xl) 0;
                min-height: 220px;
            }
            .page-banner h1 {
                font-size: 1.9rem;
            }
            .page-banner .banner-desc {
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.55rem;
            }
            .page-banner {
                padding: var(--spacing-lg) 0;
                min-height: 180px;
            }
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: var(--spacing-2xl) 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        .section-header {
            text-align: center;
            margin-bottom: var(--spacing-xl);
        }
        .section-header h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            margin-bottom: var(--spacing-xs);
        }
        .section-header .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 500px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: var(--spacing-xs);
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--spacing-xl) 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 520px) {
            .section {
                padding: var(--spacing-lg) 0;
            }
            .section-header h2 {
                font-size: 1.35rem;
            }
        }

        /* ========== CARDS ========== */
        .card {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            height: 100%;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: transparent;
        }
        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: var(--spacing-sm);
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }
        .card:hover .card-icon {
            transform: scale(1.08);
        }
        .card-icon.primary {
            background: rgba(27, 42, 74, 0.08);
            color: var(--color-primary);
        }
        .card-icon.accent {
            background: rgba(200, 169, 110, 0.12);
            color: var(--color-accent);
        }
        .card-icon.emphasis {
            background: rgba(45, 125, 140, 0.1);
            color: var(--color-emphasis);
        }
        .card h3 {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }
        .card p {
            font-size: 0.92rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }
        .card-img {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: var(--spacing-sm);
            aspect-ratio: 16 / 10;
        }
        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .card:hover .card-img img {
            transform: scale(1.06);
        }

        /* ========== GRID ========== */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-md);
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-2 {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 520px) {
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
            }
        }

        /* ========== BUTTONS ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            letter-spacing: 0.4px;
            transition: all var(--transition-base);
            cursor: pointer;
            white-space: nowrap;
            border: 2px solid transparent;
            line-height: 1.3;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--color-primary-light);
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }
        .btn-outline {
            background: transparent;
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
            box-shadow: var(--shadow-md);
        }
        .btn-accent {
            background: var(--color-accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: var(--color-accent-hover);
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 14px 36px;
            font-size: 1.05rem;
            border-radius: var(--radius-md);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-emphasis);
            outline-offset: 3px;
        }
        @media (max-width: 520px) {
            .btn {
                padding: 10px 22px;
                font-size: 0.9rem;
            }
            .btn-lg {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }

        /* ========== BADGE / TAG ========== */
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            font-size: 0.78rem;
            font-weight: 600;
            border-radius: 50px;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .badge-accent {
            background: rgba(200, 169, 110, 0.14);
            color: #8b6914;
        }
        .badge-emphasis {
            background: rgba(45, 125, 140, 0.12);
            color: #1f5a63;
        }
        .badge-primary {
            background: rgba(27, 42, 74, 0.07);
            color: var(--color-primary);
        }

        /* ========== STATS ROW ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            text-align: center;
        }
        .stat-item {
            padding: var(--spacing-md);
            background: var(--color-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .stat-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .stat-number {
            font-family: var(--font-heading);
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            line-height: 1.1;
        }
        .stat-label {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-sm);
            }
            .stat-number {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 520px) {
            .stats-row {
                grid-template-columns: 1fr 1fr;
            }
            .stat-number {
                font-size: 1.5rem;
            }
        }

        /* ========== STEPS / PROCESS ========== */
        .steps-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            counter-reset: step;
        }
        .step-item {
            position: relative;
            text-align: center;
            padding: var(--spacing-lg) var(--spacing-md);
            background: var(--color-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .step-item:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: var(--spacing-sm);
            font-family: var(--font-heading);
        }
        .step-number.s1 {
            background: rgba(27, 42, 74, 0.1);
            color: var(--color-primary);
        }
        .step-number.s2 {
            background: rgba(200, 169, 110, 0.15);
            color: #8b6914;
        }
        .step-number.s3 {
            background: rgba(45, 125, 140, 0.12);
            color: #1f5a63;
        }
        .step-number.s4 {
            background: rgba(27, 42, 74, 0.08);
            color: var(--color-primary-light);
        }
        .step-item h4 {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            line-height: 1.5;
        }
        @media (max-width: 1024px) {
            .steps-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .steps-list {
                grid-template-columns: 1fr;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--color-primary);
            text-align: left;
            cursor: pointer;
            transition: all var(--transition-fast);
            gap: 12px;
            letter-spacing: 0.3px;
        }
        .faq-question:hover {
            background: rgba(27, 42, 74, 0.02);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 0.75rem;
            color: var(--color-text-muted);
            transition: transform var(--transition-base);
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(0, 0, 0, 0.03);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            background: rgba(200, 169, 110, 0.15);
            color: var(--color-accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
        }
        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 0.9rem;
            color: var(--color-text-soft);
            line-height: 1.7;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--color-primary);
            color: #fff;
            text-align: center;
        }
        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.5px;
        }
        .cta-section p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: var(--spacing-md);
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }
        .cta-section .btn-accent {
            font-size: 1.05rem;
            padding: 14px 36px;
        }
        @media (max-width: 768px) {
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

        /* ========== CONTACT BLOCK ========== */
        .contact-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            align-items: start;
        }
        .contact-info-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .contact-info-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 0.95rem;
            color: var(--color-text-soft);
            line-height: 1.5;
        }
        .contact-info-list li i {
            color: var(--color-accent);
            font-size: 1.1rem;
            margin-top: 2px;
            flex-shrink: 0;
            width: 20px;
            text-align: center;
        }
        .contact-form-card {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border-light);
        }
        .contact-form-card h3 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: var(--spacing-sm);
        }
        .form-group {
            margin-bottom: var(--spacing-sm);
        }
        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-text-soft);
            margin-bottom: 4px;
            letter-spacing: 0.3px;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            color: var(--color-text);
            background: #fafaf9;
            transition: all var(--transition-fast);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(200, 169, 110, 0.1);
            background: #fff;
            outline: none;
        }
        .form-group textarea {
            resize: vertical;
            min-height: 100px;
        }
        @media (max-width: 768px) {
            .contact-block {
                grid-template-columns: 1fr;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1a1f2b;
            color: rgba(255, 255, 255, 0.8);
            padding: var(--spacing-2xl) 0 var(--spacing-md);
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }
        .footer-brand .footer-logo {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }
        .footer-brand p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.6;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: var(--spacing-sm);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ========== UTILITY ========== */
        .text-center {
            text-align: center;
        }
        .mt-lg {
            margin-top: var(--spacing-lg);
        }
        .mt-xl {
            margin-top: var(--spacing-xl);
        }
        .mb-lg {
            margin-bottom: var(--spacing-lg);
        }
        .highlight-accent {
            color: var(--color-accent);
            font-weight: 600;
        }