/* roulang page: index */
/* ============ 设计变量 ============ */
        :root {
            --primary: #E8A817;
            --primary-hover: #F0B940;
            --primary-dark: #C48F14;
            --accent: #FF6B35;
            --accent-hover: #FF8255;
            --bg-deep: #080812;
            --bg-dark: #0D0D1F;
            --bg-section: #111122;
            --bg-card: #16162B;
            --bg-card-hover: #1C1C38;
            --bg-nav: rgba(13, 13, 31, 0.92);
            --text-primary: #F0F0F5;
            --text-secondary: #C5C5D8;
            --text-muted: #8888A0;
            --text-dim: #5E5E78;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-card: rgba(255, 255, 255, 0.10);
            --border-active: rgba(232, 168, 23, 0.45);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.55);
            --shadow-glow: 0 0 30px rgba(232, 168, 23, 0.18);
            --shadow-accent: 0 0 24px rgba(255, 107, 53, 0.20);
            --radius-xs: 4px;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 50%;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --font-display: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --max-width: 1280px;
            --nav-height: 68px;
        }

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

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

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
        }

        /* ============ 容器 ============ */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ============ 导航栏 ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: var(--bg-nav);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(13, 13, 31, 0.96);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            min-width: 0;
        }

        .nav-left {
            justify-content: flex-end;
        }

        .nav-right {
            justify-content: flex-start;
        }

        .nav-logo-wrap {
            flex-shrink: 0;
            text-align: center;
            padding: 0 4px;
        }

        .nav-logo {
            font-family: var(--font-display);
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.03em;
            white-space: nowrap;
            transition: color var(--transition-fast), text-shadow var(--transition-fast);
            text-shadow: 0 0 18px rgba(232, 168, 23, 0.25);
        }

        .nav-logo:hover {
            color: var(--primary-hover);
            text-shadow: 0 0 28px rgba(232, 168, 23, 0.45);
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-secondary);
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .nav-link:hover {
            color: var(--primary-hover);
            background: rgba(232, 168, 23, 0.06);
        }

        .nav-link.active {
            color: var(--primary);
            background: rgba(232, 168, 23, 0.10);
            position: relative;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
        }

        .nav-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 9px 20px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.9rem;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            letter-spacing: 0.02em;
            transition: transform var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast);
            box-shadow: 0 4px 16px rgba(232, 168, 23, 0.30);
            white-space: nowrap;
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(232, 168, 23, 0.45);
            opacity: 0.95;
        }

        .mobile-menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            background: transparent;
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-size: 1.5rem;
            transition: background var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--bg-dark);
            z-index: 999;
            flex-direction: column;
            padding: 32px 24px;
            gap: 8px;
            overflow-y: auto;
        }

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

        .mobile-menu .nav-link {
            font-size: 1.1rem;
            padding: 14px 20px;
            border-radius: var(--radius-md);
        }

        .mobile-menu .nav-btn {
            margin-top: 16px;
            text-align: center;
            font-size: 1rem;
            padding: 14px 24px;
        }

        /* ============ 主内容区 ============ */
        .main-content {
            padding-top: var(--nav-height);
        }

        /* ============ 板块通用 ============ */
        .section {
            padding: 70px 0;
            position: relative;
        }

        .section-sm {
            padding: 48px 0;
        }

        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--primary);
            margin-bottom: 12px;
            position: relative;
            padding-left: 28px;
        }

        .section-label::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 18px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
            color: var(--text-primary);
        }

        .section-subtitle {
            font-size: 1.08rem;
            color: var(--text-muted);
            max-width: 620px;
            line-height: 1.7;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header .section-subtitle {
            margin: 0 auto;
        }

        /* ============ Hero 首屏 ============ */
        .hero {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            background-position: center 30%;
            overflow: hidden;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg,
                    rgba(8, 8, 18, 0.55) 0%,
                    rgba(8, 8, 18, 0.78) 45%,
                    rgba(8, 8, 18, 0.94) 100%);
            z-index: 1;
        }

        .hero-glow {
            position: absolute;
            top: 15%;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(232, 168, 23, 0.16) 0%, transparent 70%);
            pointer-events: none;
            z-index: 0;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 750px;
            margin: 0 auto;
            padding: 60px 20px 40px;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 0.88rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            background: rgba(232, 168, 23, 0.12);
            color: var(--primary);
            border: 1px solid rgba(232, 168, 23, 0.28);
            margin-bottom: 24px;
        }

        .hero-title {
            font-size: 3.2rem;
            font-weight: 900;
            letter-spacing: 0.02em;
            margin-bottom: 18px;
            line-height: 1.2;
            color: #fff;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
        }

        .hero-title .highlight {
            color: var(--primary);
            text-shadow: 0 0 32px rgba(232, 168, 23, 0.5);
        }

        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 540px;
            margin: 0 auto 32px;
            line-height: 1.75;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            border-radius: 28px;
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.02em;
            transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #D49514);
            color: #fff;
            box-shadow: 0 6px 22px rgba(232, 168, 23, 0.32);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(232, 168, 23, 0.48);
            background: linear-gradient(135deg, var(--primary-hover), #DEA018);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.35);
        }

        .btn-outline:hover {
            border-color: rgba(255, 255, 255, 0.7);
            background: rgba(255, 255, 255, 0.05);
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(255, 255, 255, 0.08);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 6px 22px rgba(255, 107, 53, 0.30);
        }

        .btn-accent:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(255, 107, 53, 0.45);
            background: var(--accent-hover);
        }

        /* ============ 平台简介板块 ============ */
        .intro-section {
            background: var(--bg-dark);
            position: relative;
        }

        .intro-section::before {
            content: '';
            position: absolute;
            top: -60px;
            left: 50%;
            transform: translateX(-50%);
            width: 120px;
            height: 4px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
            border-radius: 2px;
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .intro-image-wrap {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .intro-image-wrap img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-lg);
            transition: transform var(--transition-slow);
        }

        .intro-image-wrap:hover img {
            transform: scale(1.03);
        }

        .intro-image-badge {
            position: absolute;
            bottom: 20px;
            left: 20px;
            background: rgba(8, 8, 18, 0.85);
            backdrop-filter: blur(8px);
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--primary);
            border: 1px solid var(--border-active);
        }

        .intro-text h2 {
            font-size: 2rem;
            margin-bottom: 18px;
        }

        .intro-text p {
            color: var(--text-secondary);
            margin-bottom: 14px;
            font-size: 1.02rem;
            line-height: 1.8;
        }

        .intro-features {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }

        .intro-tag {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.88rem;
            font-weight: 600;
            background: rgba(232, 168, 23, 0.08);
            color: var(--primary);
            border: 1px solid rgba(232, 168, 23, 0.2);
            transition: background var(--transition-fast), border-color var(--transition-fast);
        }

        .intro-tag:hover {
            background: rgba(232, 168, 23, 0.16);
            border-color: rgba(232, 168, 23, 0.4);
        }

        /* ============ 特色卡片板块 ============ */
        .features-section {
            background: var(--bg-section);
        }

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

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base), background var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 100px;
            height: 100px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(232, 168, 23, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-glow);
            border-color: var(--border-active);
            background: var(--bg-card-hover);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: 20px;
            background: linear-gradient(135deg, rgba(232, 168, 23, 0.18), rgba(255, 107, 53, 0.12));
            color: var(--primary);
            position: relative;
            z-index: 1;
        }

        .feature-card h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }

        .feature-card p {
            font-size: 0.93rem;
            color: var(--text-muted);
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }

        /* ============ 分类入口板块 ============ */
        .category-section {
            background: var(--bg-dark);
        }

        .category-card {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-xl);
            overflow: hidden;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            cursor: pointer;
        }

        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
            border-color: var(--border-active);
        }

        .category-card-image {
            height: 100%;
            min-height: 280px;
            overflow: hidden;
        }

        .category-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .category-card:hover .category-card-image img {
            transform: scale(1.05);
        }

        .category-card-body {
            padding: 40px 32px 40px 8px;
        }

        .category-card-body h3 {
            font-size: 1.6rem;
            margin-bottom: 12px;
        }

        .category-card-body p {
            color: var(--text-muted);
            margin-bottom: 20px;
            line-height: 1.7;
        }

        .category-card-body .btn {
            font-size: 0.9rem;
            padding: 10px 24px;
        }

        /* ============ 最新信息列表 ============ */
        .news-section {
            background: var(--bg-section);
        }

        .news-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 24px 26px;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-active);
        }

        .news-card-meta {
            display: flex;
            gap: 12px;
            align-items: center;
            font-size: 0.82rem;
            color: var(--text-dim);
        }

        .news-card-category {
            padding: 4px 12px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 0.78rem;
            background: rgba(232, 168, 23, 0.10);
            color: var(--primary);
        }

        .news-card h3 {
            font-size: 1.08rem;
            line-height: 1.5;
        }

        .news-card h3 a {
            color: var(--text-primary);
            transition: color var(--transition-fast);
        }

        .news-card h3 a:hover {
            color: var(--primary-hover);
        }

        .news-card-excerpt {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-empty {
            text-align: center;
            padding: 48px 20px;
            color: var(--text-muted);
            font-size: 1.02rem;
            grid-column: 1 / -1;
        }

        /* ============ 数据统计板块 ============ */
        .stats-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }

        .stats-section::after {
            content: '';
            position: absolute;
            bottom: -120px;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(232, 168, 23, 0.05) 0%, transparent 70%);
            pointer-events: none;
        }

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

        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-card);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-glow);
        }

        .stat-number {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--primary);
            letter-spacing: 0.02em;
            line-height: 1.1;
            margin-bottom: 8px;
            text-shadow: 0 0 20px rgba(232, 168, 23, 0.3);
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 600;
        }

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

        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

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

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 20px 24px;
            background: transparent;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1.02rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: color var(--transition-fast);
            cursor: pointer;
        }

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

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(232, 168, 23, 0.12);
            color: var(--primary);
            font-size: 1.1rem;
            transition: transform var(--transition-base), background var(--transition-base);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(232, 168, 23, 0.22);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            color: var(--text-muted);
            font-size: 0.93rem;
            line-height: 1.75;
        }

        /* ============ CTA 板块 ============ */
        .cta-section {
            background: var(--bg-dark);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            left: 50%;
            transform: translateX(-50%);
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(232, 168, 23, 0.10) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-xl);
            padding: 56px 40px;
            max-width: 700px;
            margin: 0 auto;
            box-shadow: var(--shadow-glow);
        }

        .cta-inner h2 {
            font-size: 2rem;
            margin-bottom: 12px;
        }

        .cta-inner p {
            color: var(--text-muted);
            margin-bottom: 28px;
            font-size: 1.02rem;
        }

        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 32px;
        }

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

        .footer-brand h4 {
            font-size: 1.3rem;
            color: var(--primary);
            margin-bottom: 12px;
            font-weight: 800;
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .footer-links h5 {
            font-size: 1rem;
            margin-bottom: 16px;
            color: var(--text-primary);
            font-weight: 700;
        }

        .footer-links ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--primary-hover);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 24px;
            text-align: center;
            color: var(--text-dim);
            font-size: 0.85rem;
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.5rem;
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .intro-image-wrap {
                max-width: 500px;
                margin: 0 auto;
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-card {
                grid-template-columns: 1fr;
            }
            .category-card-image {
                min-height: 200px;
                max-height: 260px;
            }
            .category-card-body {
                padding: 28px 24px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-list {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .nav-left,
            .nav-right {
                gap: 2px;
            }
            .nav-link {
                padding: 8px 10px;
                font-size: 0.88rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 768px) {
            .nav-left,
            .nav-right {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .header-inner {
                justify-content: space-between;
            }
            .nav-logo-wrap {
                flex-shrink: 0;
                order: 0;
            }
            .mobile-menu-toggle {
                order: 1;
            }
            .hero {
                min-height: 500px;
            }
            .hero-title {
                font-size: 2rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .hero-content {
                padding: 40px 16px 30px;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .news-list {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .stat-number {
                font-size: 2.2rem;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .intro-text h2 {
                font-size: 1.6rem;
            }
            .cta-inner {
                padding: 36px 22px;
            }
            .cta-inner h2 {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .btn {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .category-card-body {
                padding: 24px 20px;
            }
            .category-card-body h3 {
                font-size: 1.3rem;
            }
            .feature-card {
                padding: 28px 20px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.65rem;
            }
            .hero-desc {
                font-size: 0.9rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn {
                width: 100%;
                max-width: 280px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .stat-item {
                padding: 22px 10px;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .cta-actions {
                flex-direction: column;
                align-items: center;
            }
            .cta-actions .btn {
                width: 100%;
                max-width: 260px;
            }
            .nav-logo {
                font-size: 1.15rem;
            }
            .intro-tag {
                font-size: 0.78rem;
                padding: 6px 12px;
            }
        }

        /* ============ 动画 ============ */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(28px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-in {
            animation: fadeInUp 0.6s ease forwards;
        }

        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }
        .delay-4 {
            animation-delay: 0.4s;
        }

        /* ============ 状态指示器 ============ */
        .status-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #22c55e;
            margin-right: 8px;
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.5);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(34, 197, 94, 0);
            }
        }

        /* ============ 高亮数字动画 ============ */
        .count-up {
            display: inline-block;
            transition: all 0.6s ease;
        }

        /* 辅助类 */
        .text-center {
            text-align: center;
        }
        .text-muted {
            color: var(--text-muted);
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }

/* roulang page: category1 */
:root {
            --bg-deep: #0a0a16;
            --bg-primary: #0f0f1e;
            --bg-secondary: #15152a;
            --bg-card: #1a1a35;
            --bg-card-hover: #1f1f40;
            --bg-elevated: #1e1e3a;
            --text-primary: #f2f2f7;
            --text-secondary: #c0c0d4;
            --text-muted: #8a8aa6;
            --accent-orange: #ff6b35;
            --accent-orange-light: #ff8c5a;
            --accent-red: #e94560;
            --accent-red-light: #f06078;
            --accent-gold: #f0c040;
            --accent-teal: #2dd4bf;
            --border-subtle: rgba(255, 255, 255, 0.06);
            --border-medium: rgba(255, 255, 255, 0.10);
            --border-glow: rgba(255, 107, 53, 0.30);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.30);
            --shadow-card-hover: 0 8px 40px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(255, 107, 53, 0.18);
            --shadow-glow: 0 0 40px rgba(233, 69, 96, 0.20);
            --shadow-glow-orange: 0 0 32px rgba(255, 107, 53, 0.22);
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, sans-serif;
            --container-max: 1200px;
            --container-narrow: 960px;
        }

        *,
        *::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-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-deep);
            background-image:
                radial-gradient(ellipse at 20% 10%, rgba(233, 69, 96, 0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 75% 20%, rgba(255, 107, 53, 0.05) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 60%, rgba(45, 212, 191, 0.03) 0%, transparent 50%);
            min-height: 100vh;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

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

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

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

        /* ============ HEADER ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 15, 30, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            padding: 0;
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(10, 10, 22, 0.94);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.35);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            position: relative;
        }

        .mobile-menu-toggle {
            display: none;
            font-size: 26px;
            color: var(--text-primary);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
            flex-shrink: 0;
        }

        .mobile-menu-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-left {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
        }

        .nav-logo-wrap {
            flex-shrink: 0;
            padding: 0 28px;
        }

        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--text-primary);
            white-space: nowrap;
            background: linear-gradient(135deg, var(--accent-orange), var(--accent-gold));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            transition: opacity var(--transition-fast);
        }

        .nav-logo:hover {
            opacity: 0.85;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 10px;
            flex: 1;
            justify-content: flex-end;
        }

        .nav-link {
            display: inline-block;
            padding: 8px 16px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-link.active {
            color: var(--accent-orange);
            background: rgba(255, 107, 53, 0.08);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent-orange);
            border-radius: 2px;
        }

        .nav-btn {
            display: inline-block;
            padding: 9px 22px;
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-orange), var(--accent-red));
            border-radius: 50px;
            transition: transform var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast);
            white-space: nowrap;
            box-shadow: 0 4px 16px rgba(255, 107, 53, 0.25);
        }

        .nav-btn:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 24px rgba(255, 107, 53, 0.40);
            color: #fff;
        }

        .nav-btn:active {
            transform: translateY(0);
        }

        /* ============ PAGE BANNER ============ */
        .page-banner {
            position: relative;
            min-height: 360px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: var(--bg-primary);
        }

        .page-banner-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }

        .page-banner-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            filter: brightness(0.35) saturate(1.1);
        }

        .page-banner-overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
            background: linear-gradient(180deg,
                    rgba(10, 10, 22, 0.55) 0%,
                    rgba(15, 15, 30, 0.70) 40%,
                    rgba(15, 15, 30, 0.92) 100%);
        }

        .page-banner-content {
            position: relative;
            z-index: 2;
            padding: 60px 0;
            text-align: center;
        }

        .page-banner-badge {
            display: inline-block;
            padding: 6px 18px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: var(--accent-orange-light);
            background: rgba(255, 107, 53, 0.10);
            border: 1px solid rgba(255, 107, 53, 0.25);
            border-radius: 50px;
            margin-bottom: 20px;
            text-transform: uppercase;
        }

        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 14px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
        }

        .page-banner h1 .highlight {
            background: linear-gradient(135deg, var(--accent-orange), var(--accent-gold));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .page-banner-desc {
            font-size: 1.12rem;
            color: var(--text-secondary);
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.6;
        }

        /* ============ BREADCRUMB ============ */
        .breadcrumb-bar {
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
            padding: 12px 0;
        }

        .breadcrumb-list {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--text-muted);
        }

        .breadcrumb-list a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

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

        .breadcrumb-sep {
            color: var(--text-muted);
            font-size: 0.75rem;
        }

        .breadcrumb-current {
            color: var(--accent-orange-light);
            font-weight: 500;
        }

        /* ============ SECTION COMMON ============ */
        .section {
            padding: 70px 0;
        }

        .section-dark {
            background: var(--bg-primary);
        }

        .section-darker {
            background: var(--bg-deep);
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 0.01em;
        }

        .section-header h2 .accent {
            color: var(--accent-orange);
        }

        .section-header p {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto;
        }

        .section-label {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--accent-orange);
            margin-bottom: 8px;
        }

        /* ============ OVERVIEW ============ */
        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 44px;
            align-items: center;
        }

        .overview-image-wrap {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-glow-orange);
        }

        .overview-image-wrap img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-lg);
            transition: transform var(--transition-smooth);
        }

        .overview-image-wrap:hover img {
            transform: scale(1.03);
        }

        .overview-image-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            padding: 5px 14px;
            font-size: 0.78rem;
            font-weight: 700;
            color: #fff;
            background: rgba(233, 69, 96, 0.85);
            border-radius: 50px;
            letter-spacing: 0.04em;
            backdrop-filter: blur(6px);
        }

        .overview-text h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .overview-text p {
            color: var(--text-secondary);
            margin-bottom: 12px;
            line-height: 1.75;
        }

        .overview-stats-row {
            display: flex;
            gap: 28px;
            margin-top: 24px;
            flex-wrap: wrap;
        }

        .overview-stat {
            text-align: center;
            padding: 16px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-medium);
            min-width: 90px;
            flex: 1;
        }

        .overview-stat .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent-orange);
            display: block;
            line-height: 1;
            margin-bottom: 4px;
        }

        .overview-stat .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ============ FEATURE CARDS ============ */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-medium);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-orange), var(--accent-red));
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--border-glow);
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .icon-orange {
            background: rgba(255, 107, 53, 0.14);
            color: var(--accent-orange);
        }

        .icon-red {
            background: rgba(233, 69, 96, 0.14);
            color: var(--accent-red-light);
        }

        .icon-teal {
            background: rgba(45, 212, 191, 0.14);
            color: var(--accent-teal);
        }

        .icon-gold {
            background: rgba(240, 192, 64, 0.14);
            color: var(--accent-gold);
        }

        .feature-card h4 {
            font-size: 1.08rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .feature-card .card-image {
            width: 100%;
            height: 150px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            margin-top: 14px;
        }

        /* ============ STEPS ============ */
        .steps-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            position: relative;
            padding-left: 36px;
        }

        .steps-list::before {
            content: '';
            position: absolute;
            left: 18px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--accent-orange), var(--accent-red), transparent);
            border-radius: 1px;
        }

        .step-item {
            position: relative;
            padding: 18px 0 18px 28px;
            transition: transform var(--transition-fast);
        }

        .step-item:hover {
            transform: translateX(4px);
        }

        .step-number {
            position: absolute;
            left: -36px;
            top: 18px;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 2px solid var(--accent-orange);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.9rem;
            color: var(--accent-orange);
            z-index: 2;
            transition: background var(--transition-fast), color var(--transition-fast);
        }

        .step-item:hover .step-number {
            background: var(--accent-orange);
            color: #fff;
        }

        .step-content {
            background: var(--bg-card);
            border: 1px solid var(--border-medium);
            border-radius: var(--radius-md);
            padding: 20px 22px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .step-item:hover .step-content {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card-hover);
        }

        .step-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }

        .step-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ============ GUIDE CARDS ============ */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border-medium);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }

        .guide-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--border-glow);
        }

        .guide-card-image {
            width: 100%;
            height: 170px;
            object-fit: cover;
        }

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

        .guide-card-tag {
            display: inline-block;
            padding: 3px 10px;
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            border-radius: 50px;
            margin-bottom: 10px;
            align-self: flex-start;
        }

        .tag-beginner {
            background: rgba(45, 212, 191, 0.14);
            color: var(--accent-teal);
        }

        .tag-advanced {
            background: rgba(233, 69, 96, 0.14);
            color: var(--accent-red-light);
        }

        .tag-popular {
            background: rgba(255, 107, 53, 0.14);
            color: var(--accent-orange-light);
        }

        .guide-card-body h4 {
            font-size: 1.02rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .guide-card-body p {
            font-size: 0.87rem;
            color: var(--text-muted);
            line-height: 1.55;
            flex: 1;
        }

        .guide-card-link {
            display: inline-block;
            margin-top: 14px;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--accent-orange);
            transition: color var(--transition-fast);
            align-self: flex-start;
        }

        .guide-card-link:hover {
            color: var(--accent-orange-light);
        }

        .guide-card-link::after {
            content: ' →';
            transition: transform var(--transition-fast);
            display: inline-block;
        }

        .guide-card-link:hover::after {
            transform: translateX(3px);
        }

        /* ============ DATA STRIP ============ */
        .data-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .data-card {
            background: var(--bg-card);
            border: 1px solid var(--border-medium);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
        }

        .data-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-glow-orange);
        }

        .data-number {
            font-size: 2.6rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-orange), var(--accent-gold));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1;
            display: block;
            margin-bottom: 8px;
        }

        .data-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .data-sub {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ============ FAQ ============ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 780px;
            margin: 0 auto;
        }

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

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

        .faq-question {
            width: 100%;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            text-align: left;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: background var(--transition-fast);
            border-radius: var(--radius-md);
        }

        .faq-question:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        .faq-icon {
            font-size: 1.2rem;
            color: var(--accent-orange);
            transition: transform var(--transition-smooth);
            flex-shrink: 0;
            font-weight: 700;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--accent-red-light);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px 24px;
        }

        .faq-answer p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ============ CTA ============ */
        .cta-section {
            position: relative;
            overflow: hidden;
            background: var(--bg-primary);
            border-top: 1px solid var(--border-subtle);
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-medium);
            box-shadow: var(--shadow-glow);
        }

        .cta-inner h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-inner p {
            font-size: 1rem;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-block;
            padding: 14px 32px;
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-orange), var(--accent-red));
            border-radius: 50px;
            transition: transform var(--transition-fast), box-shadow var(--transition-fast);
            box-shadow: 0 6px 24px rgba(255, 107, 53, 0.28);
            letter-spacing: 0.02em;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(255, 107, 53, 0.40);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-outline {
            display: inline-block;
            padding: 14px 32px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            border: 2px solid var(--border-medium);
            border-radius: 50px;
            transition: border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
        }

        .btn-outline:hover {
            border-color: var(--accent-orange);
            background: rgba(255, 107, 53, 0.06);
            color: var(--accent-orange-light);
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-subtle);
            padding: 50px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-brand h4 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            background: linear-gradient(135deg, var(--accent-orange), var(--accent-gold));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline-block;
        }

        .footer-brand p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.65;
        }

        .footer-links h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-links ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .overview-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .page-banner h1 {
                font-size: 2.2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .nav-logo-wrap {
                padding: 0 16px;
            }
            .nav-link {
                padding: 8px 10px;
                font-size: 0.88rem;
            }
        }

        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }
            .nav-left,
            .nav-right {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(15, 15, 30, 0.97);
                backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--border-medium);
                z-index: 999;
            }
            .nav-left.nav-open,
            .nav-right.nav-open {
                display: flex;
            }
            .nav-right.nav-open {
                top: auto;
                bottom: auto;
                position: relative;
                background: transparent;
                border: none;
                padding: 8px 20px 16px;
                gap: 6px;
            }
            .header-inner {
                flex-wrap: wrap;
                height: auto;
                padding: 8px 0;
            }
            .nav-logo-wrap {
                order: 0;
                flex: 1;
                text-align: center;
                padding: 0;
            }
            .mobile-menu-toggle {
                order: -1;
            }
            .nav-left {
                order: 2;
                width: 100%;
            }
            .nav-right {
                order: 3;
                width: 100%;
            }
            .nav-link {
                width: 100%;
                text-align: center;
                padding: 10px;
            }
            .nav-btn {
                width: 100%;
                text-align: center;
            }
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .guide-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .data-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .page-banner {
                min-height: 260px;
            }
            .page-banner h1 {
                font-size: 1.7rem;
            }
            .page-banner-desc {
                font-size: 0.95rem;
            }
            .section {
                padding: 44px 0;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .overview-stats-row {
                gap: 12px;
            }
            .overview-stat {
                min-width: 70px;
                padding: 12px 14px;
            }
            .overview-stat .stat-number {
                font-size: 1.4rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .cta-inner {
                padding: 40px 16px;
            }
            .cta-inner h2 {
                font-size: 1.4rem;
            }
            .steps-list {
                padding-left: 28px;
            }
            .steps-list::before {
                left: 13px;
            }
            .step-number {
                left: -28px;
                width: 28px;
                height: 28px;
                font-size: 0.78rem;
                top: 20px;
            }
            .step-item {
                padding: 14px 0 14px 20px;
            }
            .data-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 520px) {
            .page-banner {
                min-height: 220px;
            }
            .page-banner h1 {
                font-size: 1.4rem;
            }
            .page-banner-content {
                padding: 40px 0;
            }
            .page-banner-badge {
                font-size: 0.7rem;
                padding: 4px 12px;
            }
            .data-strip {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .data-card {
                padding: 18px 12px;
            }
            .data-number {
                font-size: 1.6rem;
            }
            .section {
                padding: 34px 0;
            }
            .section-header {
                margin-bottom: 28px;
            }
            .section-header h2 {
                font-size: 1.3rem;
            }
            .container {
                padding: 0 14px;
            }
            .overview-stats-row {
                flex-direction: column;
                gap: 8px;
            }
            .overview-stat {
                flex: none;
            }
        }

/* roulang page: article */
:root {
            --primary: #1e1b4b;
            --primary-light: #312e81;
            --accent: #f97316;
            --accent-hover: #ea580c;
            --accent-soft: #fff7ed;
            --gold: #eab308;
            --gold-soft: #fefce8;
            --bg: #fafafa;
            --bg-alt: #f1f5f9;
            --surface: #ffffff;
            --text: #1f2937;
            --text-strong: #111827;
            --text-weak: #6b7280;
            --text-muted: #9ca3af;
            --border: #e5e7eb;
            --border-light: #f3f4f6;
            --radius-xs: 6px;
            --radius-sm: 10px;
            --radius: 14px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.16);
            --transition-fast: 0.18s ease;
            --transition: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1.2);
            --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --max-width: 1240px;
            --header-height: 72px;
        }

        *,
        *::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: 1.7;
            color: var(--text);
            background-color: var(--bg);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        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;
        }

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

        ul,
        ol {
            list-style: none;
        }

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

        /* Reading progress bar */
        .reading-progress {
            position: fixed;
            top: 0;
            left: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), var(--gold));
            z-index: 10000;
            width: 0%;
            transition: width 0.1s linear;
            border-radius: 0 2px 2px 0;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition);
        }

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

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            height: 100%;
        }

        .nav-left {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-xs);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-weak);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .nav-link:hover {
            color: var(--text-strong);
            background: var(--bg-alt);
        }

        .nav-link.active {
            color: var(--accent);
            font-weight: 600;
            background: var(--accent-soft);
        }

        .nav-logo-wrap {
            flex-shrink: 0;
        }

        .nav-logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }

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

        .nav-logo .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
            flex-shrink: 0;
            box-shadow: 0 0 12px rgba(249, 115, 22, 0.5);
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-btn {
            display: inline-flex;
            align-items: center;
            padding: 10px 20px;
            border-radius: var(--radius-xs);
            font-size: 0.88rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            transition: all var(--transition-fast);
            white-space: nowrap;
            box-shadow: 0 2px 8px rgba(249, 115, 22, 0.3);
        }

        .nav-btn:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(249, 115, 22, 0.4);
            color: #fff;
        }

        .nav-btn:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(249, 115, 22, 0.3);
        }

        .mobile-menu-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text);
            padding: 6px 10px;
            border-radius: var(--radius-xs);
            transition: background var(--transition-fast);
            line-height: 1;
        }

        .mobile-menu-toggle:hover {
            background: var(--bg-alt);
        }

        /* Mobile nav overlay */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
            opacity: 0;
            transition: opacity var(--transition);
        }

        .mobile-nav-overlay.open {
            opacity: 1;
        }

        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: #fff;
            z-index: 999;
            padding: 16px 24px 24px;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-lg);
            transform: translateY(-12px);
            opacity: 0;
            transition: all var(--transition);
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        }

        .mobile-nav-panel.open {
            transform: translateY(0);
            opacity: 1;
        }

        .mobile-nav-panel .nav-link,
        .mobile-nav-panel .nav-btn {
            display: block;
            width: 100%;
            text-align: center;
            padding: 12px 16px;
            margin: 4px 0;
            border-radius: var(--radius-sm);
            font-size: 1rem;
        }

        .mobile-nav-panel .nav-btn {
            margin-top: 8px;
        }

        /* Article Banner */
        .article-banner {
            position: relative;
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 60px 0 50px;
            overflow: hidden;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(30, 27, 75, 0.82) 0%, rgba(30, 27, 75, 0.9) 100%);
            z-index: 1;
        }

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

        .banner-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 16px;
        }

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

        .banner-breadcrumb a:hover {
            color: #fff;
        }

        .banner-breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.7rem;
        }

        .banner-breadcrumb .current {
            color: var(--gold);
            font-weight: 500;
        }

        .article-banner .banner-category-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            background: rgba(249, 115, 22, 0.25);
            color: #ffb78c;
            border: 1px solid rgba(249, 115, 22, 0.35);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .article-banner .banner-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            letter-spacing: -0.01em;
            max-width: 800px;
        }

        .article-banner .banner-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 14px;
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.88rem;
        }

        .article-banner .banner-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .article-banner .banner-meta i {
            font-size: 0.8rem;
            color: var(--gold);
        }

        /* Main layout */
        .article-main {
            padding: 50px 0 60px;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 44px;
            align-items: start;
        }

        /* Article content */
        .article-content-area {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            border: 1px solid var(--border-light);
        }

        .article-featured-image {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
            display: block;
        }

        .article-body {
            padding: 36px 40px 44px;
        }

        .article-body h2 {
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--text-strong);
            margin: 32px 0 14px;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--border-light);
            letter-spacing: -0.01em;
        }

        .article-body h2:first-child {
            margin-top: 0;
        }

        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text-strong);
            margin: 24px 0 10px;
            letter-spacing: -0.005em;
        }

        .article-body p {
            margin-bottom: 16px;
            line-height: 1.85;
            color: var(--text);
        }

        .article-body ul,
        .article-body ol {
            margin: 12px 0 20px 20px;
            padding-left: 8px;
        }

        .article-body ul {
            list-style: disc;
        }

        .article-body ol {
            list-style: decimal;
        }

        .article-body li {
            margin-bottom: 8px;
            line-height: 1.75;
            color: var(--text);
        }

        .article-body blockquote {
            margin: 20px 0;
            padding: 18px 24px;
            background: var(--accent-soft);
            border-left: 4px solid var(--accent);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-weak);
            font-size: 0.95rem;
        }

        .article-body img {
            border-radius: var(--radius);
            margin: 20px auto;
            max-width: 100%;
            box-shadow: var(--shadow-xs);
        }

        .article-body a {
            color: var(--accent);
            font-weight: 500;
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: all var(--transition-fast);
        }

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

        .article-body code {
            background: var(--bg-alt);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.88em;
            color: var(--primary-light);
            font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
        }

        .article-body pre {
            background: #1e1b2e;
            color: #e2e8f0;
            padding: 20px 24px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            margin: 20px 0;
            font-size: 0.88rem;
            line-height: 1.6;
        }

        .article-body pre code {
            background: none;
            padding: 0;
            color: inherit;
            font-size: inherit;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 0.9rem;
        }

        .article-body table th,
        .article-body table td {
            padding: 10px 14px;
            border: 1px solid var(--border);
            text-align: left;
        }

        .article-body table th {
            background: var(--bg-alt);
            font-weight: 600;
            color: var(--text-strong);
        }

        /* Article not found */
        .article-not-found {
            text-align: center;
            padding: 70px 30px;
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }

        .article-not-found .nf-icon {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .article-not-found h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 8px;
        }

        .article-not-found p {
            color: var(--text-weak);
            margin-bottom: 20px;
            font-size: 0.95rem;
        }

        .article-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-xs);
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            transition: all var(--transition-fast);
            box-shadow: 0 2px 8px rgba(249, 115, 22, 0.3);
        }

        .article-not-found .btn-back:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(249, 115, 22, 0.4);
            color: #fff;
        }

        /* Sidebar */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .sidebar-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xs);
            border: 1px solid var(--border-light);
            padding: 24px;
        }

        .sidebar-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: -0.01em;
        }

        .sidebar-card h4 i {
            color: var(--accent);
            font-size: 0.9rem;
        }

        .sidebar-post-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .sidebar-post-item {
            display: flex;
            gap: 12px;
            padding: 10px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            align-items: flex-start;
        }

        .sidebar-post-item:hover {
            background: var(--bg-alt);
        }

        .sidebar-post-thumb {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-xs);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-alt);
        }

        .sidebar-post-info {
            flex: 1;
            min-width: 0;
        }

        .sidebar-post-info .sp-title {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .sidebar-post-item:hover .sp-title {
            color: var(--accent);
        }

        .sidebar-post-info .sp-date {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .sidebar-cta-card {
            background: linear-gradient(135deg, var(--accent) 0%, #ea580c 100%);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            color: #fff;
            text-align: center;
            box-shadow: 0 8px 28px rgba(249, 115, 22, 0.35);
        }

        .sidebar-cta-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }

        .sidebar-cta-card p {
            font-size: 0.88rem;
            opacity: 0.9;
            margin-bottom: 16px;
            line-height: 1.6;
        }

        .sidebar-cta-card .btn-cta-side {
            display: inline-block;
            padding: 10px 22px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.9rem;
            background: #fff;
            color: var(--accent);
            transition: all var(--transition-fast);
        }

        .sidebar-cta-card .btn-cta-side:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
            color: var(--accent-hover);
        }

        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .sidebar-tag {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            background: var(--bg-alt);
            color: var(--text-weak);
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }

        .sidebar-tag:hover {
            background: var(--accent-soft);
            color: var(--accent);
            border-color: rgba(249, 115, 22, 0.25);
        }

        /* Related posts */
        .related-section {
            padding: 0 0 60px;
        }

        .related-section .section-label {
            font-size: 0.82rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--accent);
            margin-bottom: 6px;
        }

        .related-section .section-title {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-strong);
            margin-bottom: 28px;
            letter-spacing: -0.01em;
        }

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

        .related-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-xs);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
            border-color: transparent;
        }

        .related-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }

        .related-card-body {
            padding: 18px 20px 20px;
        }

        .related-card-body .rc-cat {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            margin-bottom: 6px;
        }

        .related-card-body .rc-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-strong);
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .related-card:hover .rc-title {
            color: var(--accent);
        }

        .related-card-body .rc-date {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: 8px;
        }

        /* CTA Section */
        .cta-section {
            background: var(--primary);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 70px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30, 27, 75, 0.9) 0%, rgba(30, 27, 75, 0.85) 100%);
            z-index: 1;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }

        .cta-section .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: 30px;
            font-size: 1rem;
            font-weight: 700;
            background: var(--accent);
            color: #fff;
            transition: all var(--transition);
            box-shadow: 0 8px 30px rgba(249, 115, 22, 0.4);
            letter-spacing: 0.01em;
        }

        .cta-section .btn-cta-large:hover {
            background: #fff;
            color: var(--accent);
            transform: translateY(-3px);
            box-shadow: 0 14px 40px rgba(249, 115, 22, 0.5);
        }

        .cta-section .btn-cta-large:active {
            transform: translateY(0);
        }

        /* Footer */
        .site-footer {
            background: #0f0d23;
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }

        .footer-brand h4 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-links h5 {
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .footer-links ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links ul li a {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr 280px;
                gap: 28px;
            }

            .article-body {
                padding: 28px 24px 32px;
            }

            .article-banner .banner-title {
                font-size: 1.75rem;
            }

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

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

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            .nav-left .nav-link,
            .nav-right .nav-link {
                display: none;
            }

            .nav-right .nav-btn {
                display: none;
            }

            .mobile-menu-toggle {
                display: inline-flex;
            }

            .mobile-nav-overlay {
                display: block;
            }

            .mobile-nav-panel {
                display: block;
            }

            .header-inner {
                justify-content: space-between;
            }

            .nav-logo-wrap {
                position: absolute;
                left: 50%;
                transform: translateX(-50%);
            }

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

            .article-sidebar {
                order: 2;
            }

            .article-content-area {
                order: 1;
            }

            .article-banner {
                padding: 40px 0 36px;
            }

            .article-banner .banner-title {
                font-size: 1.45rem;
            }

            .article-body {
                padding: 22px 18px 28px;
            }

            .article-body h2 {
                font-size: 1.3rem;
            }

            .article-body h3 {
                font-size: 1.1rem;
            }

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

            .related-card-img {
                height: 140px;
            }

            .related-section .section-title {
                font-size: 1.3rem;
            }

            .cta-section h2 {
                font-size: 1.5rem;
            }

            .cta-section p {
                font-size: 0.9rem;
            }

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

            .footer-brand {
                grid-column: auto;
            }

            .sidebar-cta-card {
                padding: 22px 18px;
            }
        }

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

            .article-banner .banner-title {
                font-size: 1.2rem;
            }

            .article-banner .banner-meta {
                font-size: 0.78rem;
                gap: 10px;
            }

            .article-body {
                padding: 16px 14px 22px;
                font-size: 0.9rem;
            }

            .article-body h2 {
                font-size: 1.15rem;
            }

            .article-body h3 {
                font-size: 1rem;
            }

            .article-body blockquote {
                padding: 12px 16px;
                font-size: 0.85rem;
            }

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

            .related-card-img {
                height: 180px;
            }

            .cta-section {
                padding: 44px 0;
            }

            .cta-section h2 {
                font-size: 1.25rem;
            }

            .nav-logo {
                font-size: 1.1rem;
            }

            .site-header {
                --header-height: 60px;
            }
        }