/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #FF6B35;
            --primary-dark: #E55A2B;
            --primary-light: #FF8C5A;
            --secondary: #004E89;
            --secondary-dark: #003A66;
            --secondary-light: #1A6BA8;
            --accent: #FFD166;
            --bg-white: #FFFFFF;
            --bg-light: #F7F8FA;
            --bg-dark: #1A1A2E;
            --bg-section-alt: #F0F2F5;
            --text-primary: #1A1A2E;
            --text-secondary: #4A4A6A;
            --text-muted: #8A8AA0;
            --text-light: #FFFFFF;
            --border-color: #E8EAF0;
            --border-radius-sm: 8px;
            --border-radius: 12px;
            --border-radius-lg: 20px;
            --border-radius-xl: 28px;
            --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(0,0,0,0.15);
            --font-size-xs: 0.75rem;
            --font-size-sm: 0.875rem;
            --font-size-base: 1rem;
            --font-size-lg: 1.125rem;
            --font-size-xl: 1.25rem;
            --font-size-2xl: 1.5rem;
            --font-size-3xl: 2rem;
            --font-size-4xl: 2.5rem;
            --font-size-5xl: 3rem;
            --spacing-xs: 0.25rem;
            --spacing-sm: 0.5rem;
            --spacing-md: 1rem;
            --spacing-lg: 1.5rem;
            --spacing-xl: 2rem;
            --spacing-2xl: 3rem;
            --spacing-3xl: 4rem;
            --spacing-4xl: 5rem;
            --transition-fast: 0.2s ease;
            --transition: 0.3s ease;
            --transition-slow: 0.5s ease;
        }

        /* ===== 基础重置 ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            font-size: var(--font-size-base);
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        p { margin-bottom: 0; color: var(--text-secondary); }

        /* ===== 通用容器 ===== */
        .container { max-width: 1200px; margin: 0 auto; padding: 0 var(--spacing-lg); }
        .container-wide { max-width: 1400px; }
        .section-padding { padding: var(--spacing-4xl) 0; }
        .section-padding-sm { padding: var(--spacing-3xl) 0; }

        /* ===== 导航栏 ===== */
        .navbar-custom {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: all var(--transition);
            padding: 0;
        }
        .navbar-custom .navbar-brand {
            font-size: var(--font-size-xl);
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            padding: var(--spacing-md) 0;
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }
        .navbar-custom .navbar-brand i { font-size: 1.6rem; color: var(--primary); }
        .navbar-custom .navbar-brand span { color: var(--secondary); }
        .navbar-custom .nav-link {
            font-size: var(--font-size-sm);
            font-weight: 600;
            color: var(--text-secondary) !important;
            padding: var(--spacing-md) var(--spacing-lg) !important;
            border-radius: var(--border-radius-sm);
            transition: all var(--transition);
            position: relative;
        }
        .navbar-custom .nav-link:hover,
        .navbar-custom .nav-link.active {
            color: var(--primary) !important;
            background: rgba(255,107,53,0.06);
        }
        .navbar-custom .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .navbar-custom .navbar-toggler {
            border: none;
            padding: var(--spacing-sm) var(--spacing-md);
            color: var(--text-primary);
            font-size: 1.4rem;
        }
        .navbar-custom .navbar-toggler:focus { box-shadow: none; }
        .navbar-custom .nav-cta {
            background: var(--primary);
            color: #fff !important;
            border-radius: 50px;
            padding: 8px 24px !important;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(255,107,53,0.3);
            transition: all var(--transition);
        }
        .navbar-custom .nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255,107,53,0.4);
            color: #fff !important;
        }
        .navbar-custom .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: 50px;
            padding: 4px 4px 4px 16px;
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            max-width: 220px;
        }
        .navbar-custom .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255,107,53,0.1);
        }
        .navbar-custom .nav-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: var(--font-size-sm);
            color: var(--text-primary);
            width: 100%;
            padding: 6px 0;
        }
        .navbar-custom .nav-search input::placeholder { color: var(--text-muted); }
        .navbar-custom .nav-search button {
            background: var(--primary);
            border: none;
            color: #fff;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
            cursor: pointer;
        }
        .navbar-custom .nav-search button:hover { background: var(--primary-dark); transform: scale(1.05); }

        /* ===== Hero 首屏 ===== */
        .hero-section {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #1A1A2E 0%, #16213E 50%, #0F3460 100%);
            overflow: hidden;
            margin-top: 0;
            padding-top: 80px;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
            animation: heroParallax 20s ease-in-out infinite alternate;
        }
        @keyframes heroParallax {
            0% { transform: scale(1) translateX(0); }
            100% { transform: scale(1.05) translateX(-20px); }
        }
        .hero-section .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(255,107,53,0.15) 0%, transparent 60%),
                        radial-gradient(ellipse at 70% 50%, rgba(0,78,137,0.2) 0%, transparent 60%);
            z-index: 1;
        }
        .hero-section .container { position: relative; z-index: 2; }
        .hero-content { max-width: 720px; }
        .hero-content .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,107,53,0.15);
            color: var(--primary-light);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: var(--font-size-sm);
            font-weight: 600;
            border: 1px solid rgba(255,107,53,0.2);
            margin-bottom: var(--spacing-lg);
            backdrop-filter: blur(4px);
        }
        .hero-content .hero-badge i { font-size: 0.9rem; }
        .hero-content .hero-badge .live-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            background: #FF6B35;
            border-radius: 50%;
            animation: pulse-dot 1.5s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.8); }
        }
        .hero-content h1 {
            font-size: var(--font-size-5xl);
            font-weight: 900;
            color: var(--text-light);
            line-height: 1.15;
            margin-bottom: var(--spacing-lg);
            letter-spacing: -1px;
        }
        .hero-content h1 .highlight { color: var(--primary); position: relative; }
        .hero-content h1 .highlight::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 0;
            right: 0;
            height: 8px;
            background: rgba(255,107,53,0.3);
            border-radius: 4px;
            z-index: -1;
        }
        .hero-content p {
            font-size: var(--font-size-lg);
            color: rgba(255,255,255,0.75);
            margin-bottom: var(--spacing-2xl);
            max-width: 580px;
            line-height: 1.8;
        }
        .hero-content .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-md);
            align-items: center;
        }
        .hero-content .btn-hero-primary {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: var(--font-size-base);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: all var(--transition);
            box-shadow: 0 8px 30px rgba(255,107,53,0.35);
        }
        .hero-content .btn-hero-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(255,107,53,0.45);
            color: #fff;
        }
        .hero-content .btn-hero-secondary {
            background: rgba(255,255,255,0.1);
            color: #fff;
            border: 1px solid rgba(255,255,255,0.2);
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: var(--font-size-base);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: all var(--transition);
            backdrop-filter: blur(4px);
        }
        .hero-content .btn-hero-secondary:hover {
            background: rgba(255,255,255,0.2);
            transform: translateY(-3px);
            color: #fff;
        }
        .hero-stats {
            display: flex;
            gap: var(--spacing-2xl);
            margin-top: var(--spacing-3xl);
            padding-top: var(--spacing-2xl);
            border-top: 1px solid rgba(255,255,255,0.1);
        }
        .hero-stats .stat-item { text-align: center; }
        .hero-stats .stat-item .stat-number {
            font-size: var(--font-size-3xl);
            font-weight: 900;
            color: var(--text-light);
            line-height: 1;
        }
        .hero-stats .stat-item .stat-number .plus { color: var(--primary); }
        .hero-stats .stat-item .stat-label {
            font-size: var(--font-size-sm);
            color: rgba(255,255,255,0.55);
            margin-top: 4px;
        }

        /* ===== 板块标题 ===== */
        .section-title {
            text-align: center;
            margin-bottom: var(--spacing-3xl);
        }
        .section-title .subtitle {
            display: inline-block;
            background: rgba(255,107,53,0.08);
            color: var(--primary);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: var(--font-size-sm);
            font-weight: 600;
            margin-bottom: var(--spacing-md);
        }
        .section-title h2 {
            font-size: var(--font-size-4xl);
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.5px;
        }
        .section-title h2 .highlight { color: var(--primary); }
        .section-title p {
            font-size: var(--font-size-base);
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-title.text-left { text-align: left; }
        .section-title.text-left p { margin: 0; }

        /* ===== 特色板块 ===== */
        .features-section { background: var(--bg-white); }
        .feature-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: var(--spacing-2xl);
            transition: all var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--primary);
            opacity: 0;
            transition: opacity var(--transition);
        }
        .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
        .feature-card:hover::before { opacity: 1; }
        .feature-card .icon-box {
            width: 56px;
            height: 56px;
            background: rgba(255,107,53,0.08);
            border-radius: var(--border-radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: var(--spacing-lg);
            transition: all var(--transition);
        }
        .feature-card:hover .icon-box { background: var(--primary); color: #fff; }
        .feature-card h3 { font-size: var(--font-size-xl); font-weight: 700; margin-bottom: var(--spacing-sm); }
        .feature-card p { font-size: var(--font-size-sm); color: var(--text-muted); line-height: 1.7; }

        /* ===== 分类卡片 ===== */
        .categories-section { background: var(--bg-section-alt); }
        .category-card {
            position: relative;
            border-radius: var(--border-radius-lg);
            overflow: hidden;
            height: 320px;
            display: flex;
            align-items: flex-end;
            transition: all var(--transition);
            cursor: pointer;
        }
        .category-card .card-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            transition: transform var(--transition-slow);
        }
        .category-card:hover .card-bg { transform: scale(1.08); }
        .category-card .card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(0,0,0,0.75) 100%);
            transition: opacity var(--transition);
        }
        .category-card .card-content {
            position: relative;
            z-index: 2;
            padding: var(--spacing-2xl);
            color: #fff;
            width: 100%;
        }
        .category-card .card-content .cat-tag {
            display: inline-block;
            background: var(--primary);
            padding: 2px 14px;
            border-radius: 50px;
            font-size: var(--font-size-xs);
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
            text-transform: uppercase;
        }
        .category-card .card-content h3 {
            font-size: var(--font-size-2xl);
            font-weight: 800;
            color: #fff;
            margin-bottom: 4px;
        }
        .category-card .card-content p {
            font-size: var(--font-size-sm);
            color: rgba(255,255,255,0.75);
            margin-bottom: var(--spacing-md);
        }
        .category-card .card-content .cat-link {
            color: #fff;
            font-weight: 600;
            font-size: var(--font-size-sm);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
        }
        .category-card .card-content .cat-link:hover { color: var(--primary-light); gap: 12px; }

        /* ===== 资讯列表 ===== */
        .news-section { background: var(--bg-white); }
        .news-card {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            padding: var(--spacing-lg);
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
        .news-card .news-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            margin-bottom: var(--spacing-sm);
            font-size: var(--font-size-xs);
            color: var(--text-muted);
        }
        .news-card .news-meta .badge-cat {
            background: rgba(255,107,53,0.08);
            color: var(--primary);
            padding: 2px 12px;
            border-radius: 50px;
            font-weight: 600;
        }
        .news-card .news-meta .date { display: flex; align-items: center; gap: 4px; }
        .news-card h3 {
            font-size: var(--font-size-base);
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card h3 a { color: var(--text-primary); transition: color var(--transition); }
        .news-card h3 a:hover { color: var(--primary); }
        .news-card p {
            font-size: var(--font-size-sm);
            color: var(--text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-top: auto;
        }
        .news-card .news-footer {
            margin-top: var(--spacing-md);
            padding-top: var(--spacing-md);
            border-top: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .news-card .news-footer .read-more {
            font-size: var(--font-size-sm);
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-card .news-footer .read-more:hover { gap: 8px; }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .stats-section .container { position: relative; z-index: 1; }
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-2xl); }
        .stat-block { text-align: center; padding: var(--spacing-xl); }
        .stat-block .stat-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: var(--spacing-md);
        }
        .stat-block .stat-number {
            font-size: var(--font-size-4xl);
            font-weight: 900;
            color: var(--text-light);
            line-height: 1;
            margin-bottom: 4px;
        }
        .stat-block .stat-number .counter-suffix { color: var(--primary); }
        .stat-block .stat-label {
            font-size: var(--font-size-sm);
            color: rgba(255,255,255,0.55);
            font-weight: 500;
        }

        /* ===== 推荐板块 ===== */
        .recommend-section { background: var(--bg-section-alt); }
        .recommend-card {
            background: var(--bg-white);
            border-radius: var(--border-radius);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
            box-shadow: var(--shadow-sm);
        }
        .recommend-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
        .recommend-card .card-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .recommend-card .card-img .img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.4) 100%);
        }
        .recommend-card .card-img .badge-top {
            position: absolute;
            top: var(--spacing-md);
            left: var(--spacing-md);
            background: var(--primary);
            color: #fff;
            padding: 2px 14px;
            border-radius: 50px;
            font-size: var(--font-size-xs);
            font-weight: 700;
            z-index: 2;
        }
        .recommend-card .card-img .badge-hot {
            position: absolute;
            top: var(--spacing-md);
            right: var(--spacing-md);
            background: rgba(0,0,0,0.5);
            color: var(--accent);
            padding: 2px 12px;
            border-radius: 50px;
            font-size: var(--font-size-xs);
            font-weight: 600;
            z-index: 2;
            backdrop-filter: blur(4px);
        }
        .recommend-card .card-body {
            padding: var(--spacing-lg);
        }
        .recommend-card .card-body .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: var(--spacing-sm);
        }
        .recommend-card .card-body .card-tags span {
            background: var(--bg-light);
            padding: 2px 10px;
            border-radius: 50px;
            font-size: var(--font-size-xs);
            color: var(--text-muted);
        }
        .recommend-card .card-body h3 {
            font-size: var(--font-size-lg);
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
        }
        .recommend-card .card-body p {
            font-size: var(--font-size-sm);
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: var(--spacing-md);
        }
        .recommend-card .card-body .card-rating {
            display: flex;
            align-items: center;
            gap: 6px;
            color: var(--accent);
            font-size: var(--font-size-sm);
        }
        .recommend-card .card-body .card-rating .rate-num {
            color: var(--text-muted);
            font-weight: 600;
        }

        /* ===== FAQ ===== */
        .faq-section { background: var(--bg-white); }
        .faq-accordion .accordion-item {
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius) !important;
            margin-bottom: var(--spacing-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-accordion .accordion-item:hover { border-color: var(--primary-light); box-shadow: var(--shadow-sm); }
        .faq-accordion .accordion-button {
            font-size: var(--font-size-base);
            font-weight: 600;
            color: var(--text-primary);
            padding: var(--spacing-lg);
            background: var(--bg-white);
            box-shadow: none !important;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: rgba(255,107,53,0.03);
        }
        .faq-accordion .accordion-button::after {
            background-size: 1rem;
            transition: transform var(--transition);
        }
        .faq-accordion .accordion-body {
            padding: 0 var(--spacing-lg) var(--spacing-lg);
            font-size: var(--font-size-sm);
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--bg-dark) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.06;
            mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 1; }
        .cta-content { text-align: center; max-width: 700px; margin: 0 auto; }
        .cta-content h2 {
            font-size: var(--font-size-4xl);
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: var(--spacing-md);
        }
        .cta-content p {
            font-size: var(--font-size-lg);
            color: rgba(255,255,255,0.65);
            margin-bottom: var(--spacing-2xl);
        }
        .cta-content .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: var(--spacing-md);
        }
        .cta-content .btn-cta-primary {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 16px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: var(--font-size-base);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: all var(--transition);
            box-shadow: 0 8px 30px rgba(255,107,53,0.3);
        }
        .cta-content .btn-cta-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(255,107,53,0.4);
            color: #fff;
        }
        .cta-content .btn-cta-secondary {
            background: rgba(255,255,255,0.08);
            color: #fff;
            border: 1px solid rgba(255,255,255,0.15);
            padding: 16px 40px;
            border-radius: 50px;
            font-weight: 600;
            font-size: var(--font-size-base);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: all var(--transition);
        }
        .cta-content .btn-cta-secondary:hover {
            background: rgba(255,255,255,0.15);
            transform: translateY(-3px);
            color: #fff;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: #0D0D1A;
            color: rgba(255,255,255,0.7);
            padding: var(--spacing-4xl) 0 0;
        }
        .footer .footer-brand {
            font-size: var(--font-size-xl);
            font-weight: 800;
            color: var(--primary);
            margin-bottom: var(--spacing-md);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer .footer-brand i { font-size: 1.5rem; }
        .footer .footer-brand span { color: var(--accent); }
        .footer .footer-desc {
            font-size: var(--font-size-sm);
            color: rgba(255,255,255,0.5);
            line-height: 1.8;
            margin-bottom: var(--spacing-lg);
            max-width: 320px;
        }
        .footer .footer-social {
            display: flex;
            gap: var(--spacing-sm);
        }
        .footer .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.5);
            transition: all var(--transition);
            font-size: 1rem;
        }
        .footer .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }
        .footer h5 {
            color: var(--text-light);
            font-size: var(--font-size-base);
            font-weight: 700;
            margin-bottom: var(--spacing-lg);
        }
        .footer .footer-links li { margin-bottom: 8px; }
        .footer .footer-links a {
            color: rgba(255,255,255,0.5);
            font-size: var(--font-size-sm);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer .footer-links a:hover { color: var(--primary); padding-left: 4px; }
        .footer .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding: var(--spacing-lg) 0;
            margin-top: var(--spacing-3xl);
            text-align: center;
            font-size: var(--font-size-sm);
            color: rgba(255,255,255,0.35);
        }
        .footer .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer .footer-bottom a:hover { color: var(--primary); }

        /* ===== 响应式 ===== */
        @media (max-width: 1199.98px) {
            .hero-content h1 { font-size: var(--font-size-4xl); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--spacing-lg); }
        }
        @media (max-width: 991.98px) {
            .navbar-custom .navbar-collapse {
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(12px);
                padding: var(--spacing-md);
                border-radius: var(--border-radius);
                box-shadow: var(--shadow-lg);
                margin-top: 8px;
            }
            .navbar-custom .nav-link.active::after { display: none; }
            .navbar-custom .nav-search { max-width: 100%; margin-top: var(--spacing-sm); }
            .hero-content h1 { font-size: var(--font-size-3xl); }
            .hero-stats { gap: var(--spacing-xl); flex-wrap: wrap; }
            .hero-stats .stat-item .stat-number { font-size: var(--font-size-2xl); }
            .section-title h2 { font-size: var(--font-size-3xl); }
            .category-card { height: 260px; }
            .stat-block .stat-number { font-size: var(--font-size-3xl); }
            .cta-content h2 { font-size: var(--font-size-3xl); }
        }
        @media (max-width: 767.98px) {
            .hero-section { min-height: 80vh; padding-top: 70px; }
            .hero-content h1 { font-size: var(--font-size-2xl); }
            .hero-content p { font-size: var(--font-size-base); }
            .hero-content .hero-actions { flex-direction: column; align-items: stretch; }
            .hero-content .btn-hero-primary,
            .hero-content .btn-hero-secondary { justify-content: center; }
            .hero-stats { flex-direction: column; gap: var(--spacing-md); align-items: center; }
            .section-padding { padding: var(--spacing-3xl) 0; }
            .section-title h2 { font-size: var(--font-size-2xl); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--spacing-md); }
            .stat-block { padding: var(--spacing-md); }
            .stat-block .stat-number { font-size: var(--font-size-2xl); }
            .category-card { height: 220px; }
            .cta-content h2 { font-size: var(--font-size-2xl); }
            .cta-content .cta-actions { flex-direction: column; align-items: stretch; }
            .cta-content .btn-cta-primary,
            .cta-content .btn-cta-secondary { justify-content: center; }
            .footer .footer-brand { justify-content: center; }
            .footer .footer-desc { max-width: 100%; text-align: center; }
            .footer .footer-social { justify-content: center; }
            .footer h5 { text-align: center; margin-top: var(--spacing-lg); }
            .footer .footer-links { text-align: center; }
        }
        @media (max-width: 520px) {
            .hero-content h1 { font-size: var(--font-size-2xl); }
            .hero-content .btn-hero-primary,
            .hero-content .btn-hero-secondary { padding: 12px 24px; font-size: var(--font-size-sm); }
            .stats-grid { grid-template-columns: 1fr; }
            .category-card { height: 200px; }
            .category-card .card-content h3 { font-size: var(--font-size-xl); }
            .section-title h2 { font-size: var(--font-size-xl); }
            .cta-content h2 { font-size: var(--font-size-xl); }
            .cta-content .btn-cta-primary,
            .cta-content .btn-cta-secondary { padding: 14px 28px; font-size: var(--font-size-sm); }
        }

        /* ===== 工具类 ===== */
        .text-primary-custom { color: var(--primary) !important; }
        .bg-primary-custom { background: var(--primary) !important; }
        .text-gradient {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .fade-in { animation: fadeIn 0.6s ease forwards; }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .btn-outline-custom {
            border: 2px solid var(--primary);
            color: var(--primary);
            border-radius: 50px;
            padding: 10px 28px;
            font-weight: 600;
            transition: all var(--transition);
        }
        .btn-outline-custom:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255,107,53,0.25);
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #7c3aed;
            --primary-dark: #5b21b6;
            --primary-light: #a78bfa;
            --primary-gradient: linear-gradient(135deg, #7c3aed, #ec4899);
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #06b6d4;
            --dark: #0f0a1e;
            --dark-2: #1a1035;
            --dark-3: #251a45;
            --bg-body: #0b0617;
            --bg-card: #150e2e;
            --bg-card-hover: #1f1544;
            --bg-section-alt: #0f0820;
            --text-primary: #f1e8ff;
            --text-secondary: #c4b5e6;
            --text-muted: #8b7eb0;
            --border-color: rgba(124, 58, 237, 0.2);
            --border-hover: rgba(124, 58, 237, 0.5);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(124, 58, 237, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ::selection {
            background: var(--primary);
            color: #fff;
        }

        /* ===== Container Override ===== */
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--dark-2);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--primary);
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary-dark);
        }

        /* ===== 导航栏 ===== */
        .navbar-custom {
            background: rgba(15, 10, 30, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            padding: 0;
            transition: var(--transition);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }
        .navbar-custom .container {
            display: flex;
            align-items: center;
            min-height: 68px;
        }
        .navbar-custom .navbar-brand {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 8px 0;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .navbar-custom .navbar-brand i {
            font-size: 1.8rem;
            -webkit-text-fill-color: initial;
            color: var(--primary-light);
            background: none;
        }
        .navbar-custom .navbar-brand span {
            font-weight: 300;
            -webkit-text-fill-color: initial;
            color: var(--secondary-light);
        }
        .navbar-custom .navbar-nav .nav-link {
            color: var(--text-secondary);
            font-weight: 500;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
            font-size: 0.95rem;
        }
        .navbar-custom .navbar-nav .nav-link i {
            margin-right: 4px;
            font-size: 0.85rem;
        }
        .navbar-custom .navbar-nav .nav-link:hover,
        .navbar-custom .navbar-nav .nav-link:focus {
            color: #fff;
            background: rgba(124, 58, 237, 0.15);
        }
        .navbar-custom .navbar-nav .nav-link.active {
            color: #fff;
            background: rgba(124, 58, 237, 0.25);
        }
        .navbar-custom .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--primary-gradient);
            border-radius: 4px;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            padding: 4px 4px 4px 16px;
            transition: var(--transition);
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            background: rgba(255, 255, 255, 0.1);
            box-shadow: 0 0 20px rgba(124, 58, 237, 0.1);
        }
        .nav-search input {
            background: none;
            border: none;
            outline: none;
            color: var(--text-primary);
            font-size: 0.9rem;
            min-width: 140px;
            padding: 6px 0;
        }
        .nav-search input::placeholder {
            color: var(--text-muted);
        }
        .nav-search button {
            background: var(--primary-gradient);
            border: none;
            color: #fff;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-search button:hover {
            transform: scale(1.08);
            box-shadow: 0 0 20px rgba(124, 58, 237, 0.4);
        }
        .nav-cta {
            background: var(--primary-gradient);
            color: #fff !important;
            padding: 8px 24px !important;
            border-radius: 50px !important;
            font-weight: 600 !important;
            font-size: 0.9rem !important;
            box-shadow: 0 4px 20px rgba(124, 58, 237, 0.3);
            transition: var(--transition);
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(124, 58, 237, 0.5);
            background: linear-gradient(135deg, #8b5cf6, #f472b6) !important;
        }
        .navbar-toggler {
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            padding: 4px 8px;
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--primary);
        }
        @media (max-width: 991.98px) {
            .navbar-custom .container {
                min-height: 60px;
            }
            .navbar-custom .navbar-collapse {
                background: rgba(15, 10, 30, 0.98);
                padding: 16px;
                border-radius: var(--radius-md);
                margin-top: 8px;
                border: 1px solid var(--border-color);
            }
            .navbar-custom .navbar-nav .nav-link {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }
            .navbar-custom .navbar-nav .nav-link.active::after {
                display: none;
            }
            .nav-search {
                width: 100%;
                margin: 12px 0;
            }
            .nav-search input {
                width: 100%;
                min-width: unset;
            }
        }

        /* ===== 分类 Banner ===== */
        .category-banner {
            position: relative;
            padding: 100px 0 80px;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            overflow: hidden;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 6, 23, 0.92), rgba(26, 16, 53, 0.85));
            z-index: 1;
        }
        .category-banner .container {
            position: relative;
            z-index: 2;
        }
        .category-banner .breadcrumb {
            background: none;
            padding: 0;
            margin-bottom: 16px;
        }
        .category-banner .breadcrumb-item {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .category-banner .breadcrumb-item a {
            color: var(--text-secondary);
        }
        .category-banner .breadcrumb-item a:hover {
            color: var(--primary-light);
        }
        .category-banner .breadcrumb-item.active {
            color: var(--primary-light);
        }
        .category-banner .breadcrumb-item+.breadcrumb-item::before {
            color: var(--text-muted);
        }
        .category-banner h1 {
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 16px;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .category-banner .lead {
            font-size: 1.2rem;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.8;
        }
        .category-banner .banner-stats {
            display: flex;
            gap: 40px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .category-banner .banner-stats .stat-item {
            text-align: center;
        }
        .category-banner .banner-stats .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            display: block;
            line-height: 1.2;
        }
        .category-banner .banner-stats .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        @media (max-width: 767.98px) {
            .category-banner {
                padding: 80px 0 60px;
            }
            .category-banner h1 {
                font-size: 2rem;
            }
            .category-banner .lead {
                font-size: 1rem;
            }
            .category-banner .banner-stats {
                gap: 24px;
            }
            .category-banner .banner-stats .stat-number {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 520px) {
            .category-banner h1 {
                font-size: 1.6rem;
            }
            .category-banner .banner-stats {
                gap: 16px;
            }
            .category-banner .banner-stats .stat-item {
                flex: 1;
                min-width: 80px;
            }
        }

        /* ===== 分类标签 ===== */
        .category-tags {
            padding: 24px 0;
            background: var(--bg-section-alt);
            border-bottom: 1px solid var(--border-color);
        }
        .category-tags .tags-wrapper {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }
        .category-tags .tags-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 600;
            margin-right: 8px;
        }
        .category-tags .tag-item {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            background: rgba(124, 58, 237, 0.12);
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            cursor: pointer;
        }
        .category-tags .tag-item:hover,
        .category-tags .tag-item.active {
            background: var(--primary-gradient);
            color: #fff;
            border-color: transparent;
            transform: translateY(-2px);
            box-shadow: 0 4px 16px rgba(124, 58, 237, 0.3);
        }

        /* ===== 通用板块标题 ===== */
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 8px;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-subtitle {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 600px;
        }
        .section-header {
            margin-bottom: 40px;
        }
        @media (max-width: 767.98px) {
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
            }
            .section-header {
                margin-bottom: 28px;
            }
        }

        /* ===== 游戏卡片 ===== */
        .game-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
        }
        .game-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-hover);
            box-shadow: var(--shadow-glow), var(--shadow-md);
            background: var(--bg-card-hover);
        }
        .game-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: var(--dark-2);
        }
        .game-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .game-card:hover .card-img-wrap img {
            transform: scale(1.05);
        }
        .game-card .card-img-overlay-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary-gradient);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 50px;
            box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
        }
        .game-card .card-img-overlay-rating {
            position: absolute;
            top: 12px;
            right: 12px;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(8px);
            color: var(--secondary);
            font-size: 0.8rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 50px;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .game-card .card-body {
            padding: 20px;
        }
        .game-card .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .game-card .card-text {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 16px;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .game-card .card-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .game-card .card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .game-card .card-meta i {
            color: var(--primary-light);
            font-size: 0.75rem;
        }
        .game-card .card-footer {
            background: none;
            border-top: 1px solid var(--border-color);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .game-card .card-footer .btn-download {
            background: var(--primary-gradient);
            color: #fff;
            border: none;
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            transition: var(--transition);
            cursor: pointer;
        }
        .game-card .card-footer .btn-download:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(124, 58, 237, 0.4);
        }
        .game-card .card-footer .game-size {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        @media (max-width: 575.98px) {
            .game-card .card-body {
                padding: 16px;
            }
            .game-card .card-footer {
                padding: 12px 16px;
                flex-wrap: wrap;
                gap: 8px;
            }
        }

        /* ===== 排行榜 ===== */
        .rank-section {
            background: var(--bg-section-alt);
        }
        .rank-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .rank-list .rank-item {
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 16px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            transition: var(--transition);
        }
        .rank-list .rank-item:hover {
            border-color: var(--border-hover);
            background: var(--bg-card-hover);
            transform: translateX(4px);
        }
        .rank-list .rank-number {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-muted);
            min-width: 40px;
            text-align: center;
        }
        .rank-list .rank-item:nth-child(1) .rank-number {
            color: var(--secondary);
        }
        .rank-list .rank-item:nth-child(2) .rank-number {
            color: #c0c0c0;
        }
        .rank-list .rank-item:nth-child(3) .rank-number {
            color: #cd7f32;
        }
        .rank-list .rank-thumb {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--dark-2);
        }
        .rank-list .rank-info {
            flex: 1;
            min-width: 0;
        }
        .rank-list .rank-info h5 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 2px;
        }
        .rank-list .rank-info .rank-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .rank-list .rank-score {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--secondary);
            display: flex;
            align-items: center;
            gap: 4px;
            flex-shrink: 0;
        }
        .rank-list .rank-score i {
            font-size: 0.9rem;
        }
        .rank-list .rank-tag {
            font-size: 0.75rem;
            padding: 2px 12px;
            border-radius: 50px;
            background: rgba(124, 58, 237, 0.15);
            color: var(--primary-light);
            flex-shrink: 0;
        }
        @media (max-width: 767.98px) {
            .rank-list .rank-item {
                flex-wrap: wrap;
                gap: 12px;
                padding: 14px 16px;
            }
            .rank-list .rank-number {
                min-width: 30px;
                font-size: 1.2rem;
            }
            .rank-list .rank-thumb {
                width: 44px;
                height: 44px;
            }
            .rank-list .rank-score {
                font-size: 1rem;
            }
            .rank-list .rank-tag {
                font-size: 0.7rem;
            }
        }
        @media (max-width: 520px) {
            .rank-list .rank-item {
                flex-direction: column;
                align-items: flex-start;
            }
            .rank-list .rank-info h5 {
                font-size: 0.95rem;
            }
        }

        /* ===== 图文区块 ===== */
        .feature-block {
            display: flex;
            align-items: center;
            gap: 48px;
            padding: 40px 0;
        }
        .feature-block .feature-img {
            flex: 0 0 45%;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
        }
        .feature-block .feature-img img {
            width: 100%;
            display: block;
        }
        .feature-block .feature-content {
            flex: 1;
        }
        .feature-block .feature-content h3 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .feature-block .feature-content p {
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .feature-block .feature-list {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .feature-block .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-secondary);
            font-size: 0.95rem;
        }
        .feature-block .feature-list li i {
            color: var(--secondary);
            font-size: 1rem;
            margin-top: 4px;
            flex-shrink: 0;
        }
        @media (max-width: 991.98px) {
            .feature-block {
                flex-direction: column;
                gap: 32px;
            }
            .feature-block .feature-img {
                flex: none;
                width: 100%;
            }
            .feature-block .feature-content h3 {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 767.98px) {
            .feature-block {
                padding: 24px 0;
                gap: 24px;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-section-alt);
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-hover);
        }
        .faq-item .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            gap: 16px;
        }
        .faq-item .faq-question:hover {
            color: var(--primary-light);
        }
        .faq-item .faq-question i {
            transition: transform 0.3s ease;
            color: var(--primary-light);
            font-size: 1.1rem;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }
        .faq-item .faq-question .q-label {
            color: var(--primary-light);
            font-weight: 700;
            margin-right: 8px;
        }
        @media (max-width: 767.98px) {
            .faq-item .faq-question {
                padding: 14px 18px;
                font-size: 0.95rem;
            }
            .faq-item .faq-answer {
                padding: 0 18px 14px;
                font-size: 0.9rem;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 6, 23, 0.9), rgba(26, 16, 53, 0.8));
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: var(--text-secondary);
            font-size: 1.1rem;
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-section .btn-cta {
            display: inline-block;
            background: var(--primary-gradient);
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            padding: 14px 40px;
            border-radius: 50px;
            border: none;
            transition: var(--transition);
            cursor: pointer;
            box-shadow: 0 8px 32px rgba(124, 58, 237, 0.3);
        }
        .cta-section .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 48px rgba(124, 58, 237, 0.5);
            background: linear-gradient(135deg, #8b5cf6, #f472b6);
        }
        @media (max-width: 767.98px) {
            .cta-section {
                padding: 56px 0;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .cta-section .btn-cta {
                font-size: 0.95rem;
                padding: 12px 32px;
            }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--dark-2);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 0;
        }
        .footer .footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer .footer-brand i {
            -webkit-text-fill-color: initial;
            color: var(--primary-light);
            background: none;
            font-size: 1.6rem;
        }
        .footer .footer-brand span {
            -webkit-text-fill-color: initial;
            color: var(--secondary-light);
        }
        .footer .footer-desc {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .footer .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-secondary);
            font-size: 1.2rem;
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .footer .footer-social a:hover {
            background: var(--primary-gradient);
            color: #fff;
            border-color: transparent;
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(124, 58, 237, 0.3);
        }
        .footer h5 {
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer h5::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 3px;
            background: var(--primary-gradient);
            border-radius: 4px;
        }
        .footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer .footer-links li {
            margin-bottom: 10px;
        }
        .footer .footer-links li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer .footer-links li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer .footer-links li a i {
            color: var(--primary-light);
            font-size: 0.6rem;
        }
        .footer .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding: 20px 0;
            margin-top: 40px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .footer .footer-bottom a {
            color: var(--primary-light);
        }
        @media (max-width: 767.98px) {
            .footer {
                padding: 40px 0 0;
            }
            .footer .footer-brand {
                font-size: 1.3rem;
            }
            .footer h5 {
                font-size: 0.95rem;
                margin-bottom: 14px;
            }
            .footer .footer-bottom {
                font-size: 0.8rem;
                margin-top: 24px;
            }
        }

        /* ===== 通用间距 ===== */
        .section-padding {
            padding: 80px 0;
        }
        @media (max-width: 767.98px) {
            .section-padding {
                padding: 48px 0;
            }
        }

        /* ===== 按钮通用 ===== */
        .btn-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary-light);
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: 1px solid var(--border-color);
            padding: 8px 24px;
            border-radius: 50px;
            background: rgba(124, 58, 237, 0.08);
        }
        .btn-more:hover {
            background: var(--primary-gradient);
            color: #fff;
            border-color: transparent;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(124, 58, 237, 0.3);
        }

        /* ===== 加载更多 ===== */
        .load-more-wrap {
            text-align: center;
            margin-top: 40px;
        }
        .load-more-wrap .btn-load {
            background: rgba(124, 58, 237, 0.1);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            padding: 10px 40px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
            cursor: pointer;
        }
        .load-more-wrap .btn-load:hover {
            background: var(--primary-gradient);
            color: #fff;
            border-color: transparent;
            box-shadow: 0 8px 24px rgba(124, 58, 237, 0.3);
        }

        /* ===== 页脚版权域名行 ===== */
        .footer .footer-bottom .domain-line {
            color: var(--text-muted);
            font-size: 0.8rem;
            margin-top: 4px;
        }
        .footer .footer-bottom .domain-line span {
            color: var(--primary-light);
        }

/* roulang page: article */
:root {
            --primary: #ff4500;
            --primary-dark: #d63700;
            --primary-light: #ff6b35;
            --secondary: #1a1a2e;
            --secondary-light: #2d2d4e;
            --accent: #00d4ff;
            --accent-dark: #00a8cc;
            --bg: #f4f5f9;
            --bg-dark: #0f0f1a;
            --bg-card: #ffffff;
            --text: #1a1a2e;
            --text-light: #6b7280;
            --text-white: #ffffff;
            --border: #e5e7eb;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 8px 32px rgba(0,0,0,0.08);
            --shadow-hover: 0 16px 48px rgba(0,0,0,0.14);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        /* navbar-custom */
        .navbar-custom {
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            padding: 0;
            transition: var(--transition);
            box-shadow: 0 2px 20px rgba(0,0,0,0.04);
        }
        .navbar-custom .container { display: flex; align-items: center; flex-wrap: wrap; }
        .navbar-custom .navbar-brand {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--secondary);
            padding: 16px 0;
            display: flex;
            align-items: center;
            gap: 10px;
            letter-spacing: -0.5px;
        }
        .navbar-custom .navbar-brand i { color: var(--primary); font-size: 1.8rem; }
        .navbar-custom .navbar-brand span { color: var(--primary); font-weight: 700; }
        .navbar-custom .navbar-nav { gap: 4px; }
        .navbar-custom .nav-link {
            color: var(--text);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 10px 18px !important;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .navbar-custom .nav-link i { font-size: 0.85rem; }
        .navbar-custom .nav-link:hover,
        .navbar-custom .nav-link:focus { color: var(--primary); background: rgba(255,69,0,0.06); }
        .navbar-custom .nav-link.active {
            color: var(--primary) !important;
            background: rgba(255,69,0,0.1);
        }
        .navbar-custom .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .navbar-custom .navbar-toggler {
            border: none;
            padding: 8px 12px;
            color: var(--secondary);
            font-size: 1.4rem;
            background: transparent;
        }
        .navbar-custom .navbar-toggler:focus { box-shadow: none; }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border-radius: 50px;
            padding: 4px 4px 4px 16px;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .nav-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(255,69,0,0.12); }
        .nav-search input {
            border: none;
            background: transparent;
            outline: none;
            padding: 6px 0;
            font-size: 0.9rem;
            color: var(--text);
            width: 140px;
        }
        .nav-search input::placeholder { color: var(--text-light); }
        .nav-search button {
            background: var(--primary);
            border: none;
            color: #fff;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-search button:hover { background: var(--primary-dark); transform: scale(1.05); }
        .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff !important;
            padding: 10px 24px !important;
            border-radius: 50px !important;
            font-weight: 700;
            letter-spacing: 0.3px;
            box-shadow: 0 4px 16px rgba(255,69,0,0.3);
            transition: var(--transition);
        }
        .nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(255,69,0,0.4); }
        /* article banner */
        .article-banner {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, var(--secondary) 0%, var(--bg-dark) 100%);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .article-banner-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }
        .article-banner .container { position: relative; z-index: 2; }
        .article-banner .article-category {
            display: inline-block;
            background: rgba(255,69,0,0.2);
            color: var(--primary-light);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            border: 1px solid rgba(255,69,0,0.25);
        }
        .article-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 16px;
            max-width: 860px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .article-banner .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            color: rgba(255,255,255,0.7);
            font-size: 0.95rem;
        }
        .article-banner .article-meta i { margin-right: 6px; color: var(--accent); }
        .article-banner .article-meta span { display: flex; align-items: center; }
        /* article main */
        .article-main { padding: 60px 0; }
        .article-content-wrap {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 48px;
            margin-bottom: 40px;
        }
        .article-content-wrap .article-body {
            font-size: 1.08rem;
            line-height: 1.9;
            color: var(--text);
        }
        .article-content-wrap .article-body p { margin-bottom: 1.6rem; }
        .article-content-wrap .article-body h2,
        .article-content-wrap .article-body h3,
        .article-content-wrap .article-body h4 { margin-top: 2rem; margin-bottom: 1rem; font-weight: 700; color: var(--secondary); }
        .article-content-wrap .article-body h2 { font-size: 1.6rem; }
        .article-content-wrap .article-body h3 { font-size: 1.3rem; }
        .article-content-wrap .article-body ul,
        .article-content-wrap .article-body ol { margin-bottom: 1.6rem; padding-left: 1.6rem; }
        .article-content-wrap .article-body li { margin-bottom: 0.4rem; }
        .article-content-wrap .article-body a { color: var(--primary); text-decoration: underline; }
        .article-content-wrap .article-body img { border-radius: var(--radius); margin: 1.6rem 0; }
        .article-content-wrap .article-body blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            background: rgba(255,69,0,0.04);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.6rem 0;
            font-style: italic;
            color: var(--text-light);
        }
        .article-not-found {
            text-align: center;
            padding: 80px 40px;
        }
        .article-not-found i { font-size: 4rem; color: var(--primary); margin-bottom: 24px; }
        .article-not-found h2 { font-size: 2rem; font-weight: 700; color: var(--secondary); margin-bottom: 12px; }
        .article-not-found p { color: var(--text-light); font-size: 1.1rem; margin-bottom: 24px; }
        .article-not-found .btn-back { 
            display: inline-flex; 
            align-items: center; 
            gap: 8px;
            background: var(--primary); 
            color: #fff; 
            padding: 12px 32px; 
            border-radius: 50px; 
            font-weight: 700; 
            transition: var(--transition);
        }
        .article-not-found .btn-back:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255,69,0,0.3); }
        /* tags & share */
        .article-tags-share {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding-top: 32px;
            margin-top: 32px;
            border-top: 1px solid var(--border);
        }
        .article-tags { display: flex; flex-wrap: wrap; gap: 8px; }
        .article-tags .tag {
            background: var(--bg);
            color: var(--text-light);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .article-tags .tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
        .article-share { display: flex; gap: 10px; }
        .article-share a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg);
            color: var(--text-light);
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .article-share a:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); }
        /* related posts */
        .related-section { padding: 60px 0; }
        .related-section .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--secondary);
            margin-bottom: 40px;
            text-align: center;
        }
        .related-section .section-title span { color: var(--primary); }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
            border: 1px solid rgba(0,0,0,0.04);
        }
        .related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
        .related-card .card-img {
            height: 200px;
            background: var(--secondary-light);
            position: relative;
            overflow: hidden;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .related-card:hover .card-img img { transform: scale(1.06); }
        .related-card .card-img .card-cat {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255,69,0,0.9);
            color: #fff;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 700;
            backdrop-filter: blur(4px);
        }
        .related-card .card-body { padding: 24px; }
        .related-card .card-body h5 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
        .related-card .card-body h5 a { color: var(--secondary); }
        .related-card .card-body h5 a:hover { color: var(--primary); }
        .related-card .card-body p { color: var(--text-light); font-size: 0.9rem; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card .card-body .card-date { color: var(--text-light); font-size: 0.82rem; }
        .related-card .card-body .card-date i { margin-right: 4px; color: var(--primary); }
        /* category cards */
        .category-showcase { padding: 60px 0; background: var(--bg); }
        .category-showcase .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--secondary);
            margin-bottom: 16px;
            text-align: center;
        }
        .category-showcase .section-sub { text-align: center; color: var(--text-light); font-size: 1.05rem; margin-bottom: 40px; }
        .cat-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            height: 240px;
            display: flex;
            align-items: flex-end;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }
        .cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
        .cat-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .cat-card:hover img { transform: scale(1.08); }
        .cat-card .cat-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(transparent 40%, rgba(0,0,0,0.8));
        }
        .cat-card .cat-info {
            position: relative;
            z-index: 2;
            padding: 24px 28px;
            width: 100%;
        }
        .cat-card .cat-info h5 { color: #fff; font-size: 1.3rem; font-weight: 700; margin-bottom: 4px; }
        .cat-card .cat-info p { color: rgba(255,255,255,0.75); font-size: 0.9rem; margin: 0; }
        /* faq */
        .faq-section { padding: 60px 0; background: var(--bg-card); }
        .faq-section .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--secondary);
            margin-bottom: 40px;
            text-align: center;
        }
        .faq-section .section-title span { color: var(--primary); }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary); box-shadow: 0 4px 16px rgba(255,69,0,0.06); }
        .faq-question {
            padding: 20px 24px;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--secondary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: var(--transition);
        }
        .faq-question i { color: var(--primary); transition: var(--transition); font-size: 0.85rem; }
        .faq-question[aria-expanded="true"] i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        /* cta */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--secondary), var(--bg-dark));
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            text-align: center;
            margin-bottom: 16px;
        }
        .cta-section p {
            text-align: center;
            color: rgba(255,255,255,0.7);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-section .cta-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .cta-section .btn-cta-primary {
            background: var(--primary);
            color: #fff;
            padding: 14px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 4px 20px rgba(255,69,0,0.3);
        }
        .cta-section .btn-cta-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(255,69,0,0.4);
        }
        .cta-section .btn-cta-secondary {
            background: transparent;
            color: #fff;
            padding: 14px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            border: 2px solid rgba(255,255,255,0.3);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-section .btn-cta-secondary:hover { border-color: var(--primary); background: rgba(255,69,0,0.1); transform: translateY(-3px); }
        /* footer */
        .footer {
            background: var(--secondary);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 0;
        }
        .footer .footer-brand {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer .footer-brand i { color: var(--primary); }
        .footer .footer-brand span { color: var(--primary); }
        .footer .footer-desc { font-size: 0.95rem; line-height: 1.8; margin-bottom: 20px; max-width: 340px; }
        .footer .footer-social { display: flex; gap: 12px; }
        .footer .footer-social a {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.6);
            transition: var(--transition);
            font-size: 1.1rem;
        }
        .footer .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }
        .footer h5 {
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer h5::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .footer .footer-links { list-style: none; padding: 0; }
        .footer .footer-links li { margin-bottom: 10px; }
        .footer .footer-links a {
            color: rgba(255,255,255,0.6);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.92rem;
        }
        .footer .footer-links a:hover { color: var(--primary); padding-left: 4px; }
        .footer .footer-bottom {
            margin-top: 40px;
            padding: 24px 0;
            border-top: 1px solid rgba(255,255,255,0.08);
            text-align: center;
            font-size: 0.88rem;
            color: rgba(255,255,255,0.4);
        }
        .footer .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer .footer-bottom a:hover { color: var(--primary); }
        /* responsive */
        @media (max-width: 1024px) {
            .article-banner h1 { font-size: 2.2rem; }
            .article-content-wrap { padding: 32px; }
        }
        @media (max-width: 768px) {
            .navbar-custom .navbar-brand { font-size: 1.3rem; }
            .navbar-custom .nav-link { padding: 10px 14px !important; font-size: 0.9rem; }
            .nav-search input { width: 100px; }
            .article-banner { padding: 70px 0 50px; min-height: 240px; }
            .article-banner h1 { font-size: 1.7rem; }
            .article-banner .article-meta { gap: 12px; font-size: 0.85rem; }
            .article-content-wrap { padding: 24px; }
            .article-content-wrap .article-body { font-size: 1rem; }
            .related-section .section-title { font-size: 1.6rem; }
            .category-showcase .section-title { font-size: 1.6rem; }
            .faq-section .section-title { font-size: 1.6rem; }
            .cta-section h2 { font-size: 1.8rem; }
            .footer .footer-brand { font-size: 1.3rem; }
        }
        @media (max-width: 520px) {
            .navbar-custom .navbar-brand { font-size: 1.1rem; gap: 6px; }
            .navbar-custom .navbar-brand i { font-size: 1.3rem; }
            .nav-search input { width: 80px; font-size: 0.8rem; }
            .article-banner { padding: 50px 0 36px; min-height: 200px; }
            .article-banner h1 { font-size: 1.3rem; }
            .article-banner .article-category { font-size: 0.75rem; padding: 4px 14px; }
            .article-content-wrap { padding: 16px; border-radius: var(--radius); }
            .article-content-wrap .article-body { font-size: 0.95rem; }
            .article-tags-share { flex-direction: column; gap: 16px; align-items: flex-start; }
            .related-card .card-img { height: 160px; }
            .cat-card { height: 180px; }
            .cta-section h2 { font-size: 1.4rem; }
            .cta-section .btn-cta-primary,
            .cta-section .btn-cta-secondary { padding: 12px 28px; font-size: 0.95rem; width: 100%; justify-content: center; }
            .footer { padding: 40px 0 0; }
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: 0 4px 20px rgba(255,69,0,0.3);
            transition: var(--transition);
            z-index: 999;
            border: none;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
        }
        .back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
        .back-to-top:hover { background: var(--primary-dark); transform: translateY(-4px); box-shadow: 0 8px 28px rgba(255,69,0,0.4); }