/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a8e;
            --primary-dark: #0f1a45;
            --secondary: #e8a838;
            --secondary-light: #f0c060;
            --accent: #ff6b35;
            --bg-body: #f5f7fc;
            --bg-card: #ffffff;
            --bg-dark: #0f1a45;
            --bg-footer: #0b132e;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #8888aa;
            --text-white: #f0f4ff;
            --border-color: #e2e6f0;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(26, 42, 108, 0.06);
            --shadow-md: 0 8px 24px rgba(26, 42, 108, 0.10);
            --shadow-lg: 0 16px 48px rgba(26, 42, 108, 0.14);
            --shadow-xl: 0 24px 64px rgba(26, 42, 108, 0.18);
            --transition: all 0.30s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --nav-width: 240px;
            --nav-collapsed: 0px;
            --header-h: 64px;
            --max-width: 1280px;
            --gap-section: 90px;
            --gap-card: 28px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-sans);
            color: var(--text-primary);
            background: var(--bg-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            display: flex;
            min-height: 100vh;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--secondary);
            outline: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            transition: var(--transition);
        }
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            box-shadow: 0 0 0 3px rgba(232, 168, 56, 0.35);
        }
        ul,
        ol {
            list-style: none;
            padding: 0;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
        }
        p {
            margin-bottom: 0.8rem;
            color: var(--text-secondary);
        }

        /* ===== 容器 ===== */
        .container-custom {
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
            padding-left: 28px;
            padding-right: 28px;
            width: 100%;
        }
        @media (max-width: 640px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== 左侧导航 (App Shell) ===== */
        .app-shell {
            display: flex;
            width: 100%;
            min-height: 100vh;
        }
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background: var(--bg-dark);
            color: var(--text-white);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            overflow-y: auto;
            box-shadow: 4px 0 24px rgba(0, 0, 0, 0.25);
        }
        .sidebar-logo {
            padding: 28px 20px 18px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            text-align: center;
        }
        .sidebar-logo a {
            color: var(--text-white);
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: var(--transition);
        }
        .sidebar-logo a:hover {
            color: var(--secondary);
        }
        .sidebar-logo .logo-icon {
            font-size: 1.6rem;
            color: var(--secondary);
        }
        .sidebar-logo .logo-sub {
            font-size: 0.7rem;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.45);
            letter-spacing: 2px;
            margin-top: 2px;
            display: block;
        }
        .sidebar-nav {
            flex: 1;
            padding: 24px 16px 16px;
        }
        .sidebar-nav .nav-section-title {
            font-size: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: rgba(255, 255, 255, 0.3);
            padding: 0 12px 10px;
            font-weight: 600;
        }
        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            margin-bottom: 4px;
        }
        .sidebar-nav a i {
            width: 22px;
            text-align: center;
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.4);
            transition: var(--transition);
        }
        .sidebar-nav a:hover,
        .sidebar-nav a:focus {
            background: rgba(255, 255, 255, 0.07);
            color: var(--secondary-light);
        }
        .sidebar-nav a:hover i,
        .sidebar-nav a:focus i {
            color: var(--secondary-light);
        }
        .sidebar-nav a.active {
            background: rgba(232, 168, 56, 0.15);
            color: var(--secondary);
        }
        .sidebar-nav a.active i {
            color: var(--secondary);
        }
        .sidebar-footer {
            padding: 16px 20px 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.72rem;
            color: rgba(255, 255, 255, 0.3);
            text-align: center;
        }

        /* ===== 主内容区 ===== */
        .main-content {
            flex: 1;
            margin-left: var(--nav-width);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            width: calc(100% - var(--nav-width));
        }
        .main-content-inner {
            flex: 1;
        }

        /* ===== 移动端汉堡按钮 ===== */
        .hamburger-toggle {
            display: none;
            position: fixed;
            top: 14px;
            left: 16px;
            z-index: 1100;
            background: var(--bg-dark);
            color: var(--text-white);
            border: none;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            font-size: 1.4rem;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            align-items: center;
            justify-content: center;
        }
        .hamburger-toggle:hover {
            background: var(--primary-light);
        }
        .sidebar-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.45);
            z-index: 999;
            opacity: 0;
            transition: opacity 0.3s ease;
            pointer-events: none;
        }
        .sidebar-overlay.show {
            opacity: 1;
            pointer-events: auto;
        }

        /* ===== Hero 首屏 ===== */
        .hero-section {
            position: relative;
            padding: 100px 0 90px;
            background: var(--bg-dark);
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 69, 0.88) 0%, rgba(26, 42, 108, 0.70) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            color: var(--text-white);
            max-width: 760px;
        }
        .hero-content h1 {
            font-size: 3.2rem;
            font-weight: 900;
            color: var(--text-white);
            line-height: 1.15;
            letter-spacing: 1px;
            margin-bottom: 20px;
        }
        .hero-content h1 .highlight {
            color: var(--secondary);
        }
        .hero-content .hero-sub {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin-bottom: 32px;
            line-height: 1.6;
        }
        .hero-content .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 28px;
        }
        .hero-content .hero-badges span {
            background: rgba(255, 255, 255, 0.10);
            backdrop-filter: blur(4px);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.85);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--secondary);
            color: var(--bg-dark);
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 36px;
            border-radius: 50px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(232, 168, 56, 0.35);
        }
        .btn-primary-custom:hover,
        .btn-primary-custom:focus {
            background: var(--secondary-light);
            color: var(--bg-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(232, 168, 56, 0.45);
        }
        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: var(--text-white);
            font-weight: 600;
            font-size: 1rem;
            padding: 13px 32px;
            border-radius: 50px;
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-outline-custom:hover,
        .btn-outline-custom:focus {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--secondary);
            color: var(--secondary);
            transform: translateY(-2px);
        }

        /* ===== 板块通用 ===== */
        .section-block {
            padding: var(--gap-section) 0;
        }
        .section-block-alt {
            background: var(--bg-card);
        }
        .section-block-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-label {
            display: inline-block;
            background: rgba(232, 168, 56, 0.12);
            color: var(--secondary);
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            padding: 5px 16px;
            border-radius: 30px;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .section-title-light {
            color: var(--text-white);
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin-bottom: 40px;
        }
        .section-desc-light {
            color: rgba(255, 255, 255, 0.65);
        }
        .text-center-custom {
            text-align: center;
        }
        .mx-auto {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 卡片通用 ===== */
        .card-custom {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            height: 100%;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card-custom .card-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 16px;
            display: inline-block;
        }
        .card-custom h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .card-custom p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== 特色卡片 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: var(--gap-card);
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-6px);
        }
        .feature-card .fc-icon {
            font-size: 2.6rem;
            color: var(--primary);
            margin-bottom: 18px;
            display: inline-block;
            background: rgba(26, 42, 108, 0.06);
            width: 70px;
            height: 70px;
            line-height: 70px;
            border-radius: 50%;
            text-align: center;
            transition: var(--transition);
        }
        .feature-card:hover .fc-icon {
            background: var(--primary);
            color: var(--text-white);
        }
        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== 游戏分类卡片 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--gap-card);
        }
        .category-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
        }
        .category-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
        }
        .category-card .cc-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            border-radius: 0;
        }
        .category-card .cc-body {
            padding: 20px 22px 22px;
        }
        .category-card .cc-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .category-card .cc-body p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 12px;
        }
        .category-card .cc-tag {
            display: inline-block;
            background: rgba(232, 168, 56, 0.10);
            color: var(--secondary);
            font-size: 0.72rem;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 20px;
        }

        /* ===== 资讯列表 ===== */
        .news-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 18px;
        }
        .news-item {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            padding: 20px 24px;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            align-items: flex-start;
        }
        .news-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }
        .news-item .ni-meta {
            flex-shrink: 0;
            width: 100px;
            text-align: center;
        }
        .news-item .ni-meta .ni-date {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .news-item .ni-meta .ni-month {
            font-size: 0.72rem;
            color: var(--text-light);
            text-transform: uppercase;
        }
        .news-item .ni-content {
            flex: 1;
        }
        .news-item .ni-content h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .news-item .ni-content h3 a {
            color: var(--text-primary);
        }
        .news-item .ni-content h3 a:hover {
            color: var(--primary-light);
        }
        .news-item .ni-content p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }
        .news-item .ni-category {
            display: inline-block;
            background: rgba(26, 42, 108, 0.06);
            color: var(--primary-light);
            font-size: 0.72rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 20px;
        }
        .news-empty {
            text-align: center;
            padding: 48px 20px;
            color: var(--text-light);
            font-size: 1rem;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            padding: 32px 16px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-4px);
        }
        .stat-item .stat-num {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--secondary);
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 6px;
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            position: relative;
        }
        .step-item {
            text-align: center;
            position: relative;
        }
        .step-item .step-num {
            width: 56px;
            height: 56px;
            line-height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--text-white);
            font-size: 1.3rem;
            font-weight: 800;
            margin: 0 auto 18px;
            box-shadow: 0 4px 16px rgba(26, 42, 108, 0.20);
            transition: var(--transition);
        }
        .step-item:hover .step-num {
            background: var(--secondary);
            transform: scale(1.08);
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-primary);
        }
        .step-item p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-item .faq-q {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-primary);
            background: var(--bg-card);
            transition: var(--transition);
            user-select: none;
        }
        .faq-item .faq-q:hover {
            background: rgba(26, 42, 108, 0.02);
        }
        .faq-item .faq-q i {
            color: var(--text-light);
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .faq-item .faq-q.active i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item .faq-a {
            padding: 0 24px 18px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item .faq-a.show {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary) 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-content {
            position: relative;
            z-index: 1;
        }
        .cta-content h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 14px;
        }
        .cta-content p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.65);
            max-width: 560px;
            margin: 0 auto 28px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-footer);
            color: rgba(255, 255, 255, 0.55);
            padding: 48px 0 32px;
            font-size: 0.88rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .site-footer .footer-brand h3 {
            color: var(--text-white);
            font-size: 1.3rem;
            font-weight: 800;
            margin-bottom: 10px;
        }
        .site-footer .footer-brand h3 .f-icon {
            color: var(--secondary);
        }
        .site-footer .footer-brand p {
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.85rem;
            max-width: 280px;
        }
        .site-footer .footer-col h4 {
            color: var(--text-white);
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .site-footer .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.5);
            padding: 5px 0;
            font-size: 0.85rem;
            transition: var(--transition);
        }
        .site-footer .footer-col a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            text-align: center;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.3);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--secondary);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            :root {
                --gap-section: 64px;
            }
            .hero-content h1 {
                font-size: 2.6rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .hamburger-toggle {
                display: flex;
            }
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar-overlay.show {
                display: block;
            }
            .main-content {
                margin-left: 0;
                width: 100%;
            }
            .hero-section {
                padding: 80px 0 70px;
                min-height: 420px;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .hero-content .hero-sub {
                font-size: 1rem;
            }
            .section-block {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .feature-grid {
                grid-template-columns: 1fr 1fr;
            }
            .category-grid {
                grid-template-columns: 1fr 1fr;
            }
            .news-item {
                flex-direction: column;
                padding: 16px 18px;
            }
            .news-item .ni-meta {
                width: auto;
                text-align: left;
                display: flex;
                gap: 8px;
                align-items: baseline;
            }
            .news-item .ni-meta .ni-date {
                font-size: 1.1rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-num {
                font-size: 2rem;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-section {
                padding: 56px 0;
            }
            .cta-content h2 {
                font-size: 1.6rem;
            }
            .hero-btns {
                flex-direction: column;
                align-items: flex-start;
            }
            .btn-primary-custom,
            .btn-outline-custom {
                width: 100%;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            :root {
                --gap-section: 40px;
                --gap-card: 16px;
            }
            .hero-section {
                padding: 64px 0 52px;
                min-height: 360px;
            }
            .hero-content h1 {
                font-size: 1.6rem;
            }
            .hero-content .hero-sub {
                font-size: 0.9rem;
            }
            .hero-content .hero-badges span {
                font-size: 0.72rem;
                padding: 4px 12px;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .section-desc {
                font-size: 0.9rem;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .category-card .cc-img {
                height: 160px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-item .stat-num {
                font-size: 1.6rem;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .faq-item .faq-q {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-item .faq-a {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
            .container-custom {
                padding-left: 12px;
                padding-right: 12px;
            }
            .btn-primary-custom,
            .btn-outline-custom {
                font-size: 0.9rem;
                padding: 12px 24px;
            }
            .site-footer {
                padding: 32px 0 24px;
            }
            .card-custom {
                padding: 20px 16px;
            }
            .feature-card {
                padding: 24px 18px;
            }
        }

        /* ===== 工具类 ===== */
        .mt-1 {
            margin-top: 12px;
        }
        .mt-2 {
            margin-top: 24px;
        }
        .mt-3 {
            margin-top: 40px;
        }
        .mb-1 {
            margin-bottom: 12px;
        }
        .mb-2 {
            margin-bottom: 24px;
        }
        .gap-1 {
            gap: 12px;
        }
        .gap-2 {
            gap: 24px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .text-secondary {
            color: var(--secondary);
        }
        .text-light-muted {
            color: var(--text-light);
        }
        .font-bold {
            font-weight: 700;
        }
        .rounded-full {
            border-radius: 9999px;
        }
        .shadow-hover {
            transition: var(--transition);
        }
        .shadow-hover:hover {
            box-shadow: var(--shadow-md);
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #e74c3c;
            --primary-dark: #c0392b;
            --primary-light: #f1948a;
            --secondary: #2c3e50;
            --secondary-light: #34495e;
            --accent: #f39c12;
            --accent-light: #f1c40f;
            --bg-body: #f5f6fa;
            --bg-card: #ffffff;
            --bg-dark: #1a1a2e;
            --bg-section: #f0f2f5;
            --text-primary: #2c3e50;
            --text-secondary: #5d6d7e;
            --text-light: #95a5a6;
            --text-white: #ffffff;
            --border-color: #e8e8e8;
            --border-light: #f0f0f0;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
            --shadow-hover: 0 12px 48px rgba(231,76,60,0.15);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --sidebar-width: 240px;
            --header-height: 0px;
            --max-width: 1200px;
            --gap-section: 60px;
        }
        /* ===== 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: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            display: flex;
            min-height: 100vh;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--text-primary); }
        h1 { font-size: 2.2rem; }
        h2 { font-size: 1.8rem; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.2rem; }
        p { margin-bottom: 1rem; color: var(--text-secondary); }
        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        /* ===== Sidebar Navigation ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-dark);
            color: var(--text-white);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            padding: 28px 0 20px;
            box-shadow: 2px 0 30px rgba(0,0,0,0.2);
            transition: var(--transition);
            overflow-y: auto;
        }
        .sidebar-logo {
            padding: 0 20px 30px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
            margin-bottom: 20px;
        }
        .sidebar-logo h2 {
            color: var(--text-white);
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-logo h2 i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .sidebar-logo p {
            font-size: 0.75rem;
            color: rgba(255,255,255,0.4);
            margin-top: 4px;
            margin-bottom: 0;
        }
        .sidebar-nav {
            flex: 1;
            padding: 0 12px;
        }
        .nav-section-title {
            font-size: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: rgba(255,255,255,0.3);
            padding: 8px 12px 12px;
            font-weight: 600;
        }
        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: rgba(255,255,255,0.65);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            margin-bottom: 2px;
        }
        .sidebar-nav a i {
            width: 20px;
            text-align: center;
            font-size: 1rem;
            color: rgba(255,255,255,0.4);
            transition: var(--transition);
        }
        .sidebar-nav a:hover {
            background: rgba(255,255,255,0.08);
            color: var(--text-white);
        }
        .sidebar-nav a:hover i { color: var(--primary); }
        .sidebar-nav a.active {
            background: rgba(231,76,60,0.2);
            color: var(--primary-light);
            border-left: 3px solid var(--primary);
        }
        .sidebar-nav a.active i { color: var(--primary); }
        /* ===== Main Content Area ===== */
        .main-wrapper {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            width: calc(100% - var(--sidebar-width));
        }
        .main-content {
            flex: 1;
            padding: 40px 0 0;
        }
        /* ===== Article Header ===== */
        .article-banner {
            position: relative;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #16213e 100%);
            padding: 60px 0 50px;
            margin-bottom: 40px;
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .article-banner .container-custom {
            position: relative;
            z-index: 1;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
            margin-bottom: 20px;
        }
        .article-breadcrumb a {
            color: rgba(255,255,255,0.6);
            transition: var(--transition);
        }
        .article-breadcrumb a:hover { color: var(--primary-light); }
        .article-breadcrumb i { font-size: 0.7rem; }
        .article-banner h1 {
            color: var(--text-white);
            font-size: 2.4rem;
            max-width: 800px;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .article-meta-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
        }
        .article-meta-bar span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta-bar i { color: var(--primary); }
        .article-category-badge {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        /* ===== Article Content ===== */
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding-bottom: 60px;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 40px;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content {
            font-size: 1rem;
            line-height: 1.9;
            color: var(--text-secondary);
        }
        .article-body .content h2,
        .article-body .content h3,
        .article-body .content h4 {
            margin-top: 1.8em;
            margin-bottom: 0.8em;
            color: var(--text-primary);
        }
        .article-body .content p {
            margin-bottom: 1.2em;
        }
        .article-body .content ul,
        .article-body .content ol {
            margin-bottom: 1.2em;
            padding-left: 1.8em;
            list-style: disc;
        }
        .article-body .content ol { list-style: decimal; }
        .article-body .content li { margin-bottom: 0.4em; color: var(--text-secondary); }
        .article-body .content img {
            border-radius: var(--radius-sm);
            margin: 1.5em 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg-section);
            padding: 16px 24px;
            margin: 1.5em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-tags {
            margin-top: 30px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .article-tags .tag {
            display: inline-block;
            background: var(--bg-section);
            color: var(--text-secondary);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            transition: var(--transition);
        }
        .article-tags .tag:hover {
            background: var(--primary);
            color: #fff;
        }
        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 24px;
            padding-top: 20px;
            border-top: 1px solid var(--border-light);
        }
        .article-share span { font-weight: 600; color: var(--text-primary); }
        .article-share a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg-section);
            color: var(--text-secondary);
            transition: var(--transition);
            font-size: 1rem;
        }
        .article-share a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
        }
        .sidebar-widget h4 {
            font-size: 1.1rem;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
            border-bottom: 2px solid var(--border-light);
            padding-bottom: 12px;
        }
        .sidebar-widget h4 i { color: var(--primary); }
        .related-list a {
            display: flex;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .related-list a:last-child { border-bottom: none; }
        .related-list a:hover { padding-left: 6px; }
        .related-list .related-img {
            width: 70px;
            height: 56px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--bg-section);
        }
        .related-list .related-info {
            flex: 1;
            min-width: 0;
        }
        .related-list .related-info h5 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-list .related-info .meta {
            font-size: 0.75rem;
            color: var(--text-light);
        }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            padding: 30px;
            text-align: center;
            border-radius: var(--radius-md);
        }
        .sidebar-cta h4 {
            color: #fff;
            border-bottom: none;
            padding-bottom: 0;
            justify-content: center;
        }
        .sidebar-cta p {
            color: rgba(255,255,255,0.85);
            font-size: 0.9rem;
            margin: 12px 0 20px;
        }
        .sidebar-cta .btn-cta {
            display: inline-block;
            background: rgba(255,255,255,0.2);
            color: #fff;
            padding: 10px 32px;
            border-radius: 30px;
            font-weight: 600;
            border: 2px solid rgba(255,255,255,0.4);
            transition: var(--transition);
        }
        .sidebar-cta .btn-cta:hover {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }
        .not-found-box i {
            font-size: 3.6rem;
            color: var(--text-light);
            margin-bottom: 20px;
        }
        .not-found-box h2 {
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }
        .not-found-box .btn-back {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 12px 36px;
            border-radius: 30px;
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-box .btn-back:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 50px 0 30px;
            margin-top: auto;
        }
        .site-footer .container-custom { max-width: var(--max-width); }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand h3 {
            color: var(--text-white);
            font-size: 1.2rem;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-brand h3 i { color: var(--primary); }
        .footer-brand p {
            color: rgba(255,255,255,0.5);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .footer-col h4 {
            color: var(--text-white);
            font-size: 0.95rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.55);
            font-size: 0.88rem;
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-col a i {
            width: 20px;
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 24px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.35);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom a:hover { color: var(--primary-light); }
        /* ===== Mobile Toggle ===== */
        .mobile-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 1100;
            background: var(--bg-dark);
            color: #fff;
            border: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            font-size: 1.2rem;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
        }
        .mobile-toggle:hover { background: var(--primary); }
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.5);
            z-index: 999;
            backdrop-filter: blur(4px);
        }
        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }
        @media (max-width: 768px) {
            :root { --sidebar-width: 0px; }
            .sidebar {
                transform: translateX(-100%);
                width: 280px;
            }
            .sidebar.open { transform: translateX(0); }
            .sidebar-overlay.active { display: block; }
            .main-wrapper {
                margin-left: 0;
                width: 100%;
            }
            .mobile-toggle { display: flex; align-items: center; justify-content: center; }
            .article-banner { padding: 40px 0 30px; }
            .article-banner h1 { font-size: 1.6rem; }
            .article-body { padding: 24px; }
            .article-sidebar { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .main-content { padding-top: 20px; }
            .article-meta-bar { gap: 12px; font-size: 0.8rem; flex-wrap: wrap; }
        }
        @media (max-width: 520px) {
            .container-custom { padding: 0 16px; }
            .article-banner h1 { font-size: 1.3rem; }
            .article-body { padding: 16px; }
            .sidebar { width: 260px; }
            .article-breadcrumb { font-size: 0.75rem; }
            .article-meta-bar span { font-size: 0.75rem; }
        }
        /* ===== Animations ===== */
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .article-banner .container-custom {
            animation: fadeInUp 0.6s ease forwards;
        }
        .article-body {
            animation: fadeInUp 0.5s ease forwards;
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #6c3fc5;
            --primary-dark: #522da8;
            --primary-light: #8b6cd6;
            --primary-gradient: linear-gradient(135deg, #6c3fc5 0%, #a855f7 100%);
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #ec4899;
            --bg-body: #f8f7fc;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #1e1b2e;
            --bg-dark-alt: #2a2540;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8a8aa8;
            --text-white: #f8f7fc;
            --text-light: #c4b5e3;
            --border-color: #e8e3f0;
            --border-light: #f0ecf6;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(108, 63, 197, 0.08);
            --shadow-md: 0 6px 24px rgba(108, 63, 197, 0.12);
            --shadow-lg: 0 16px 48px rgba(108, 63, 197, 0.16);
            --shadow-hover: 0 12px 40px rgba(108, 63, 197, 0.20);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --sidebar-width: 240px;
            --header-height: 0px;
            --font-main: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-main);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            display: flex;
            min-height: 100vh;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-primary);
        }
        p {
            color: var(--text-secondary);
            margin-bottom: 1rem;
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* ===== Sidebar Navigation ===== */
        .app-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-white);
            border-right: 1px solid var(--border-color);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
            box-shadow: 2px 0 20px rgba(108, 63, 197, 0.06);
            overflow-y: auto;
        }
        .sidebar-brand {
            padding: 28px 20px 20px;
            border-bottom: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .sidebar-brand .brand-icon {
            width: 42px;
            height: 42px;
            background: var(--primary-gradient);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 22px;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(108, 63, 197, 0.3);
        }
        .sidebar-brand .brand-text {
            font-size: 17px;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
            letter-spacing: 0.5px;
        }
        .sidebar-brand .brand-text small {
            display: block;
            font-size: 11px;
            font-weight: 400;
            color: var(--text-muted);
            letter-spacing: 0.3px;
        }
        .sidebar-nav {
            padding: 16px 12px;
            flex: 1;
        }
        .nav-section-title {
            font-size: 11px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1.2px;
            color: var(--text-muted);
            padding: 8px 12px 12px;
        }
        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 15px;
            transition: var(--transition);
            margin-bottom: 4px;
            position: relative;
        }
        .sidebar-nav a i {
            width: 22px;
            text-align: center;
            font-size: 17px;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .sidebar-nav a:hover {
            background: var(--border-light);
            color: var(--primary);
        }
        .sidebar-nav a:hover i {
            color: var(--primary);
        }
        .sidebar-nav a.active {
            background: var(--primary-gradient);
            color: #fff;
            box-shadow: 0 4px 16px rgba(108, 63, 197, 0.3);
        }
        .sidebar-nav a.active i {
            color: #fff;
        }
        .sidebar-nav a.active::before {
            display: none;
        }
        .sidebar-footer {
            padding: 16px 20px 24px;
            border-top: 1px solid var(--border-light);
            font-size: 12px;
            color: var(--text-muted);
            text-align: center;
        }

        /* ===== Main Content Area ===== */
        .main-wrapper {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .main-content {
            flex: 1;
            padding-bottom: 0;
        }

        /* ===== Mobile Header ===== */
        .mobile-header {
            display: none;
            background: var(--bg-white);
            padding: 14px 20px;
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 999;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 2px 12px rgba(108, 63, 197, 0.06);
        }
        .mobile-header .brand-text {
            font-size: 16px;
            font-weight: 800;
            color: var(--text-primary);
        }
        .mobile-header .hamburger {
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-primary);
            padding: 4px 8px;
            cursor: pointer;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .mobile-header .hamburger:hover {
            background: var(--border-light);
        }
        .mobile-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.4);
            z-index: 998;
            backdrop-filter: blur(4px);
        }
        .mobile-overlay.open {
            display: block;
        }

        /* ===== Hero Banner ===== */
        .category-hero {
            background: linear-gradient(135deg, #1e1b2e 0%, #2a2540 50%, #3b2d60 100%);
            padding: 60px 0 56px;
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(168, 85, 247, 0.15), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero .container-custom {
            position: relative;
            z-index: 2;
        }
        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(168, 85, 247, 0.2);
            border: 1px solid rgba(168, 85, 247, 0.3);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 13px;
            color: var(--text-light);
            font-weight: 500;
            margin-bottom: 18px;
            backdrop-filter: blur(4px);
        }
        .category-hero .hero-badge i {
            color: var(--secondary);
        }
        .category-hero h1 {
            font-size: 42px;
            font-weight: 900;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            line-height: 1.2;
        }
        .category-hero h1 span {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .category-hero p {
            font-size: 18px;
            color: var(--text-light);
            max-width: 640px;
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
        }
        .hero-stats .stat-item {
            display: flex;
            flex-direction: column;
        }
        .hero-stats .stat-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
        }
        .hero-stats .stat-num small {
            font-size: 16px;
            font-weight: 400;
            color: var(--text-light);
        }
        .hero-stats .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 400;
        }

        /* ===== Section Common ===== */
        .section-block {
            padding: 64px 0;
        }
        .section-block-alt {
            background: var(--bg-white);
        }
        .section-title {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 8px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 36px;
            max-width: 600px;
        }
        .text-center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Guide Cards ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .guide-card .card-img {
            height: 180px;
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .guide-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .guide-card:hover .card-img img {
            transform: scale(1.05);
        }
        .guide-card .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--primary-gradient);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            box-shadow: 0 2px 10px rgba(108, 63, 197, 0.3);
        }
        .guide-card .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card .card-body h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .guide-card .card-body h3 a {
            color: var(--text-primary);
        }
        .guide-card .card-body h3 a:hover {
            color: var(--primary);
        }
        .guide-card .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 14px;
            flex: 1;
        }
        .guide-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
        }
        .guide-card .card-meta .meta-left {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .guide-card .card-meta i {
            margin-right: 4px;
            color: var(--primary-light);
        }
        .guide-card .card-meta .badge {
            background: var(--border-light);
            padding: 2px 12px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 500;
            color: var(--text-secondary);
        }

        /* ===== Tags / Filter ===== */
        .guide-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 36px;
        }
        .guide-tags .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            transition: var(--transition);
            cursor: pointer;
        }
        .guide-tags .tag:hover {
            border-color: var(--primary-light);
            color: var(--primary);
            background: rgba(108, 63, 197, 0.04);
        }
        .guide-tags .tag.active {
            background: var(--primary-gradient);
            color: #fff;
            border-color: transparent;
            box-shadow: 0 4px 12px rgba(108, 63, 197, 0.25);
        }
        .guide-tags .tag i {
            font-size: 14px;
        }

        /* ===== Featured Guide ===== */
        .featured-guide {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            background: var(--bg-white);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-light);
        }
        .featured-guide .fg-img {
            height: 100%;
            min-height: 320px;
            background: var(--bg-dark);
        }
        .featured-guide .fg-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .featured-guide .fg-content {
            padding: 36px 40px 36px 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .featured-guide .fg-content .fg-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--secondary);
            color: #1a1a2e;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: 50px;
            margin-bottom: 14px;
            width: fit-content;
        }
        .featured-guide .fg-content h2 {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .featured-guide .fg-content p {
            font-size: 15px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .featured-guide .fg-content .fg-meta {
            display: flex;
            gap: 24px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .featured-guide .fg-content .fg-meta i {
            color: var(--primary-light);
            margin-right: 6px;
        }

        /* ===== Steps / Process ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .step-item {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-item .step-num {
            width: 48px;
            height: 48px;
            background: var(--primary-gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            margin: 0 auto 16px;
            box-shadow: 0 4px 16px rgba(108, 63, 197, 0.25);
        }
        .step-item h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .step-connector {
            display: none;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            color: var(--text-primary);
            list-style: none;
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item[open] summary {
            color: var(--primary);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .faq-item .faq-answer p:last-child {
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: var(--primary-gradient);
            padding: 56px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-block .container-custom {
            position: relative;
            z-index: 2;
        }
        .cta-block h2 {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-block p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-block .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #fff;
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 16px;
            padding: 14px 38px;
            border-radius: 50px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .cta-block .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
            background: var(--secondary-light);
            color: #1a1a2e;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-light);
            padding: 48px 0 0;
            margin-top: 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .site-footer .footer-brand h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .site-footer .footer-brand h3 .f-icon {
            color: var(--secondary);
        }
        .site-footer .footer-brand p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .site-footer .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .site-footer .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 14px;
            padding: 4px 0;
            transition: var(--transition);
        }
        .site-footer .footer-col a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .site-footer .footer-col a i {
            width: 20px;
            margin-right: 6px;
            color: var(--primary-light);
        }
        .site-footer .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 14px;
            color: var(--text-muted);
        }
        .site-footer .footer-bottom a {
            color: var(--text-light);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--secondary);
        }

        /* ===== Button ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-gradient);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 50px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(108, 63, 197, 0.25);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(108, 63, 197, 0.35);
            color: #fff;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--primary);
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 50px;
            border: 2px solid var(--primary);
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Pagination ===== */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 40px;
        }
        .pagination-wrap a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 15px;
            transition: var(--transition);
        }
        .pagination-wrap a:hover {
            border-color: var(--primary-light);
            color: var(--primary);
        }
        .pagination-wrap a.active {
            background: var(--primary-gradient);
            color: #fff;
            border-color: transparent;
            box-shadow: 0 4px 12px rgba(108, 63, 197, 0.25);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-guide {
                grid-template-columns: 1fr;
            }
            .featured-guide .fg-content {
                padding: 24px 28px;
            }
            .featured-guide .fg-img {
                min-height: 240px;
            }
            .category-hero h1 {
                font-size: 34px;
            }
        }

        @media (max-width: 768px) {
            .app-sidebar {
                transform: translateX(-100%);
            }
            .app-sidebar.open {
                transform: translateX(0);
            }
            .main-wrapper {
                margin-left: 0;
            }
            .mobile-header {
                display: flex;
            }
            .mobile-overlay.open {
                display: block;
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .category-hero {
                padding: 40px 0 36px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero p {
                font-size: 16px;
            }
            .hero-stats {
                gap: 24px;
            }
            .hero-stats .stat-num {
                font-size: 22px;
            }
            .section-block {
                padding: 44px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .featured-guide .fg-content h2 {
                font-size: 22px;
            }
            .cta-block h2 {
                font-size: 26px;
            }
            .guide-tags .tag {
                font-size: 13px;
                padding: 6px 16px;
            }
        }

        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .hero-stats {
                flex-direction: column;
                gap: 12px;
            }
            .container-custom {
                padding: 0 16px;
            }
            .guide-card .card-body {
                padding: 16px 18px 18px;
            }
            .faq-item summary {
                padding: 14px 18px;
                font-size: 15px;
            }
            .faq-item .faq-answer {
                padding: 0 18px 16px;
            }
            .cta-block .cta-btn {
                padding: 12px 28px;
                font-size: 15px;
            }
        }

        /* ===== Foundation Overrides ===== */
        .grid-container {
            max-width: 1200px;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .grid-container {
                padding: 0 16px;
            }
        }