/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #0f141e;
            --primary-light: #1a2233;
            --primary-dark: #090c14;
            --accent: #f0b90b;
            --accent-dark: #c99a08;
            --accent-light: #fcd34d;
            --bg-main: #0b0f18;
            --bg-card: #131a2a;
            --bg-card-hover: #1b2440;
            --bg-sidebar: #080b12;
            --bg-overlay: rgba(0,0,0,0.7);
            --text-primary: #f1f5f9;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --text-accent: #f0b90b;
            --border-color: rgba(240,185,11,0.15);
            --border-accent: rgba(240,185,11,0.4);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.4);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.6);
            --shadow-glow: 0 0 40px rgba(240,185,11,0.08);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --sidebar-width: 240px;
            --header-height: 0px;
            --max-width: 1280px;
        }

        /* ===== 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-base);
            background: var(--bg-main);
            color: var(--text-primary);
            line-height: 1.7;
            overflow-x: hidden;
            min-height: 100vh;
        }
        a { color: var(--text-accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent-light); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea, select { font-family: inherit; font-size: inherit; outline: none; }
        button { cursor: pointer; border: none; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; letter-spacing: -0.02em; }
        h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); }
        h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); }
        h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); }
        h4 { font-size: 1.15rem; }
        p { margin-bottom: 1rem; color: var(--text-secondary); }
        ::selection { background: var(--accent); color: var(--primary); }
        :focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container { padding: 0 16px; }
        }

        /* ===== App Shell Layout ===== */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        /* ===== Sidebar ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-sidebar);
            border-right: 1px solid rgba(240,185,11,0.06);
            z-index: 1000;
            display: flex;
            flex-direction: column;
            padding: 28px 16px 24px;
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            overflow-y: auto;
        }
        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 12px 28px;
            border-bottom: 1px solid rgba(240,185,11,0.08);
            margin-bottom: 24px;
        }
        .sidebar-logo .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            font-weight: 900;
            flex-shrink: 0;
        }
        .sidebar-logo .logo-text {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.5px;
        }
        .sidebar-logo .logo-text span { color: var(--accent); }
        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex: 1;
        }
        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        .sidebar-nav .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 1.1rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .sidebar-nav .nav-item:hover {
            background: rgba(240,185,11,0.06);
            color: var(--text-primary);
        }
        .sidebar-nav .nav-item:hover i { color: var(--accent); }
        .sidebar-nav .nav-item.active {
            background: rgba(240,185,11,0.1);
            color: var(--accent);
        }
        .sidebar-nav .nav-item.active i { color: var(--accent); }
        .sidebar-nav .nav-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 24px;
            background: var(--accent);
            border-radius: 0 4px 4px 0;
        }
        .sidebar-footer {
            padding-top: 20px;
            border-top: 1px solid rgba(240,185,11,0.06);
            margin-top: auto;
        }
        .sidebar-footer .sidebar-social {
            display: flex;
            gap: 12px;
            justify-content: center;
        }
        .sidebar-footer .sidebar-social a {
            color: var(--text-muted);
            font-size: 1.1rem;
            padding: 8px;
            border-radius: 50%;
            transition: var(--transition);
        }
        .sidebar-footer .sidebar-social a:hover { color: var(--accent); background: rgba(240,185,11,0.08); }

        /* ===== Mobile Header ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: var(--bg-sidebar);
            border-bottom: 1px solid rgba(240,185,11,0.06);
            padding: 12px 20px;
            align-items: center;
            justify-content: space-between;
            backdrop-filter: blur(20px);
        }
        .mobile-header .mobile-logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .mobile-header .mobile-logo .logo-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--primary);
            font-weight: 900;
        }
        .mobile-header .mobile-logo span {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
        }
        .mobile-header .mobile-logo span span { color: var(--accent); }
        .hamburger {
            width: 40px;
            height: 40px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .hamburger:hover { background: rgba(240,185,11,0.08); }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        /* ===== Sidebar Overlay (mobile) ===== */
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.6);
            z-index: 998;
            backdrop-filter: blur(4px);
            opacity: 0;
            transition: opacity 0.35s ease;
        }
        .sidebar-overlay.show { opacity: 1; }

        /* ===== Main Content ===== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            width: calc(100% - var(--sidebar-width));
        }

        /* ===== Hero Section ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 80px 24px 60px;
            overflow: hidden;
            background: var(--primary);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            transform: scale(1.05);
            transition: transform 8s ease;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11,15,24,0.7) 0%, rgba(11,15,24,0.85) 50%, rgba(11,15,24,0.95) 100%);
        }
        .hero:hover .hero-bg { transform: scale(1); }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(240,185,11,0.12);
            border: 1px solid rgba(240,185,11,0.2);
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent);
            margin-bottom: 28px;
            letter-spacing: 0.5px;
            backdrop-filter: blur(8px);
        }
        .hero-badge i { font-size: 0.9rem; }
        .hero h1 {
            font-size: clamp(2.6rem, 6vw, 4.5rem);
            font-weight: 900;
            line-height: 1.15;
            color: var(--text-primary);
            margin-bottom: 20px;
        }
        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: clamp(1rem, 1.5vw, 1.2rem);
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: 2px solid transparent;
            letter-spacing: 0.3px;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: var(--primary);
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: transparent;
            color: var(--accent);
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(240,185,11,0.2);
        }
        .btn-secondary {
            background: transparent;
            color: var(--text-primary);
            border-color: rgba(240,185,11,0.3);
        }
        .btn-secondary:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-3px);
            background: rgba(240,185,11,0.05);
        }
        .btn-sm {
            padding: 10px 22px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 18px 42px;
            font-size: 1.05rem;
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 24px;
        }
        .section-dark {
            background: var(--primary);
        }
        .section-darker {
            background: var(--bg-main);
        }
        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }
        .section-header h2 {
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .section-header h2 .highlight {
            color: var(--accent);
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(240,185,11,0.08);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .section-tag i { font-size: 0.8rem; }

        /* ===== Cards Grid ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(240,185,11,0.06);
            transition: var(--transition);
        }
        .card:hover {
            transform: translateY(-6px);
            border-color: rgba(240,185,11,0.15);
            box-shadow: var(--shadow-lg), var(--shadow-glow);
            background: var(--bg-card-hover);
        }
        .card-image {
            position: relative;
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }
        .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .card:hover .card-image img { transform: scale(1.05); }
        .card-image .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(240,185,11,0.9);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 700;
            backdrop-filter: blur(4px);
        }
        .card-image .card-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 30px 16px 16px;
            background: linear-gradient(transparent, rgba(0,0,0,0.8));
        }
        .card-body {
            padding: 22px 24px 26px;
        }
        .card-body h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        .card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 14px;
            line-height: 1.6;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .card-meta i { margin-right: 4px; font-size: 0.75rem; }
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--accent);
            transition: var(--transition);
        }
        .card-link:hover { gap: 12px; color: var(--accent-light); }

        /* ===== Features / Icon Cards ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid rgba(240,185,11,0.06);
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            border-color: rgba(240,185,11,0.15);
            box-shadow: var(--shadow-md);
        }
        .feature-card .icon-wrap {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            background: rgba(240,185,11,0.08);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--accent);
            transition: var(--transition);
        }
        .feature-card:hover .icon-wrap {
            background: rgba(240,185,11,0.15);
            transform: scale(1.05);
        }
        .feature-card h3 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .feature-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== Stats Section ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: rgba(240,185,11,0.03);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(240,185,11,0.06);
            transition: var(--transition);
        }
        .stat-item:hover {
            border-color: rgba(240,185,11,0.15);
            background: rgba(240,185,11,0.05);
        }
        .stat-item .stat-number {
            font-size: clamp(2rem, 4vw, 3.2rem);
            font-weight: 900;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* ===== News / CMS List ===== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .news-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 20px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid rgba(240,185,11,0.04);
            transition: var(--transition);
        }
        .news-item:hover {
            border-color: rgba(240,185,11,0.12);
            background: var(--bg-card-hover);
            transform: translateX(4px);
        }
        .news-item .news-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(240,185,11,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .news-item .news-content {
            flex: 1;
            min-width: 0;
        }
        .news-item .news-title {
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-item .news-title a {
            color: inherit;
        }
        .news-item .news-title a:hover { color: var(--accent); }
        .news-item .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .news-item .news-meta span { display: flex; align-items: center; gap: 4px; }
        .news-item .news-meta i { font-size: 0.7rem; }
        .news-empty {
            text-align: center;
            padding: 48px 24px;
            color: var(--text-muted);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed rgba(240,185,11,0.1);
        }
        .news-empty i { font-size: 2rem; margin-bottom: 12px; opacity: 0.4; }

        /* ===== Guide / CTA Block ===== */
        .guide-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid rgba(240,185,11,0.06);
        }
        .guide-block .guide-image {
            height: 100%;
            min-height: 340px;
            background: url('/assets/images/coverpic/cover-2.png') center center / cover no-repeat;
            position: relative;
        }
        .guide-block .guide-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, transparent 40%, var(--bg-card) 100%);
        }
        .guide-block .guide-content {
            padding: 48px 48px 48px 0;
        }
        .guide-block .guide-content h2 {
            font-size: 1.8rem;
            margin-bottom: 16px;
        }
        .guide-block .guide-content p {
            font-size: 0.95rem;
            margin-bottom: 24px;
        }
        @media (max-width: 900px) {
            .guide-block { grid-template-columns: 1fr; }
            .guide-block .guide-image { min-height: 220px; }
            .guide-block .guide-image::after { background: linear-gradient(transparent 40%, var(--bg-card) 100%); }
            .guide-block .guide-content { padding: 32px 28px; }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid rgba(240,185,11,0.04);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: rgba(240,185,11,0.1); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            cursor: pointer;
            transition: var(--transition);
            gap: 16px;
        }
        .faq-question:hover { color: var(--accent); }
        .faq-question i {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--accent); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            text-align: center;
            padding: 80px 24px;
            background: var(--primary);
            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: 0.06;
            transform: scale(1.05);
        }
        .cta-section .container { position: relative; z-index: 1; }
        .cta-section h2 {
            font-size: clamp(1.8rem, 3vw, 2.6rem);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-sidebar);
            border-top: 1px solid rgba(240,185,11,0.05);
            padding: 48px 24px 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .footer-brand .footer-logo .logo-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--primary);
            font-weight: 900;
        }
        .footer-brand .footer-logo span {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
        }
        .footer-brand .footer-logo span span { color: var(--accent); }
        .footer-brand p {
            font-size: 0.88rem;
            color: var(--text-muted);
            max-width: 300px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 18px;
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a {
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(240,185,11,0.04);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom p {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .footer-bottom .footer-links {
            display: flex;
            gap: 20px;
        }
        .footer-bottom .footer-links a {
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .footer-bottom .footer-links a:hover { color: var(--accent); }

        /* ===== Responsive ===== */
        @media (max-width: 1100px) {
            .feature-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 900px) {
            .sidebar { transform: translateX(-100%); }
            .sidebar.open { transform: translateX(0); }
            .mobile-header { display: flex; }
            .sidebar-overlay { display: block; pointer-events: none; }
            .sidebar-overlay.show { pointer-events: auto; }
            .main-content {
                margin-left: 0;
                width: 100%;
                padding-top: 64px;
            }
            .hero { min-height: 70vh; padding: 100px 20px 50px; }
            .card-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
        }
        @media (max-width: 640px) {
            .section { padding: 56px 16px; }
            .card-grid { grid-template-columns: 1fr; gap: 18px; }
            .feature-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
            .stat-item { padding: 20px 12px; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .news-item { flex-direction: column; align-items: flex-start; gap: 12px; }
            .guide-block .guide-content { padding: 24px 20px; }
            .hero h1 { font-size: clamp(1.8rem, 8vw, 2.6rem); }
            .hero-actions { flex-direction: column; align-items: center; }
            .cta-actions { flex-direction: column; align-items: center; }
            .faq-question { padding: 14px 18px; font-size: 0.92rem; }
            .faq-answer { padding: 0 18px; }
            .faq-item.open .faq-answer { padding: 0 18px 16px; }
        }
        @media (max-width: 400px) {
            .stats-grid { grid-template-columns: 1fr; }
            .btn { width: 100%; justify-content: center; }
            .hero { padding: 80px 14px 40px; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-8 { margin-top: 8px; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mb-16 { margin-bottom: 16px; }
        .gap-12 { gap: 12px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

        /* ===== Smooth scrollbar ===== */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--bg-main); }
        ::-webkit-scrollbar-thumb { background: rgba(240,185,11,0.2); border-radius: 3px; }
        ::-webkit-scrollbar-thumb:hover { background: rgba(240,185,11,0.35); }

        /* ===== Animations ===== */
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .animate-in {
            animation: fadeInUp 0.7s ease forwards;
        }
        .delay-1 { animation-delay: 0.1s; }
        .delay-2 { animation-delay: 0.2s; }
        .delay-3 { animation-delay: 0.3s; }
        .delay-4 { animation-delay: 0.4s; }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #b71c1c;
            --primary-light: #ff6b6b;
            --primary-glow: rgba(230, 57, 70, 0.3);
            --secondary: #1d3557;
            --secondary-light: #2d4a7a;
            --accent: #f4a261;
            --accent-light: #ffb74d;
            --bg-dark: #0f0f1a;
            --bg-card: #1a1a2e;
            --bg-card-hover: #222240;
            --bg-section: #141428;
            --bg-sidebar: #12121f;
            --text-primary: #f1f1f1;
            --text-secondary: #b0b0c8;
            --text-muted: #6c6c8a;
            --border-color: #2a2a4a;
            --border-glow: rgba(230, 57, 70, 0.2);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.4);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.6);
            --shadow-glow: 0 0 30px rgba(230, 57, 70, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --sidebar-width: 240px;
            --header-height: 0px;
            --max-width: 1200px;
        }

        /* ===== 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);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            display: flex;
            min-height: 100vh;
        }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--bg-dark); }
        ::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--primary); }

        /* ===== Layout ===== */
        .app-wrapper {
            display: flex;
            width: 100%;
            min-height: 100vh;
        }

        /* ===== Sidebar ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-sidebar);
            border-right: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            overflow-y: auto;
            backdrop-filter: blur(10px);
            transition: var(--transition);
        }
        .sidebar-brand {
            padding: 28px 20px 20px;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .sidebar-brand .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 0 20px var(--primary-glow);
            flex-shrink: 0;
        }
        .sidebar-brand .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
        }
        .sidebar-brand .logo-text span { color: var(--primary); }
        .sidebar-nav { padding: 16px 12px; flex: 1; display: flex; flex-direction: column; gap: 4px; }
        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        .sidebar-nav .nav-item i { width: 20px; text-align: center; font-size: 16px; }
        .sidebar-nav .nav-item:hover {
            background: rgba(255,255,255,0.06);
            color: var(--text-primary);
        }
        .sidebar-nav .nav-item.active {
            background: linear-gradient(135deg, rgba(230,57,70,0.18), rgba(230,57,70,0.06));
            color: var(--primary-light);
            box-shadow: inset 3px 0 0 var(--primary);
        }
        .sidebar-nav .nav-item.active::before {
            content: '';
            position: absolute;
            left: -12px;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            background: var(--primary);
            border-radius: 0 4px 4px 0;
        }
        .sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid var(--border-color);
            font-size: 12px;
            color: var(--text-muted);
            text-align: center;
        }

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

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 30px;
        }

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            padding: 60px 0 40px;
            background: linear-gradient(135deg, var(--bg-section) 0%, var(--bg-card) 100%);
            border-bottom: 1px solid var(--border-color);
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .article-hero .container { position: relative; z-index: 1; }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .article-breadcrumb a { color: var(--text-secondary); }
        .article-breadcrumb a:hover { color: var(--primary-light); }
        .article-breadcrumb .sep { color: var(--text-muted); font-size: 12px; }
        .article-breadcrumb .current { color: var(--text-primary); }
        .article-hero .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px 24px;
            margin-bottom: 20px;
        }
        .article-hero .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .article-hero .article-meta .meta-item i { font-size: 14px; color: var(--primary); }
        .article-hero .article-meta .category-badge {
            display: inline-block;
            padding: 4px 14px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            color: #fff;
            letter-spacing: 0.5px;
        }
        .article-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.25;
            max-width: 900px;
            background: linear-gradient(135deg, #fff 60%, var(--text-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .article-hero .article-summary {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 720px;
            margin-top: 16px;
            line-height: 1.7;
        }

        /* ===== Article Body ===== */
        .article-section {
            padding: 50px 0 70px;
            flex: 1;
        }
        .article-body {
            max-width: 860px;
            margin: 0 auto;
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-primary);
        }
        .article-body .content p {
            margin-bottom: 1.6em;
        }
        .article-body .content h2 {
            font-size: 1.6rem;
            margin: 2em 0 0.8em;
            color: var(--text-primary);
            border-left: 4px solid var(--primary);
            padding-left: 16px;
        }
        .article-body .content h3 {
            font-size: 1.25rem;
            margin: 1.6em 0 0.6em;
            color: var(--accent);
        }
        .article-body .content ul, .article-body .content ol {
            margin: 1em 0 1.6em 1.6em;
        }
        .article-body .content li {
            margin-bottom: 0.5em;
            color: var(--text-secondary);
        }
        .article-body .content ul li { list-style: disc; }
        .article-body .content ol li { list-style: decimal; }
        .article-body .content blockquote {
            margin: 1.6em 0;
            padding: 20px 24px;
            background: var(--bg-card);
            border-left: 4px solid var(--primary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body .content code {
            background: var(--bg-card);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--accent);
        }
        .article-body .content img {
            border-radius: var(--radius-md);
            margin: 1.6em 0;
            box-shadow: var(--shadow-md);
        }
        .article-body .content a {
            color: var(--primary-light);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body .content a:hover { color: var(--accent); }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
        }
        .not-found-box .nf-icon {
            font-size: 64px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .not-found-box h2 {
            font-size: 1.8rem;
            margin-bottom: 12px;
        }
        .not-found-box p {
            color: var(--text-secondary);
            font-size: 1.1rem;
            margin-bottom: 28px;
        }
        .not-found-box .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
        }
        .not-found-box .btn-back:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px var(--primary-glow);
            color: #fff;
        }

        /* ===== Article Nav ===== */
        .article-nav-links {
            display: flex;
            justify-content: space-between;
            margin-top: 50px;
            padding-top: 30px;
            border-top: 1px solid var(--border-color);
            gap: 20px;
        }
        .article-nav-links a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .article-nav-links a:hover {
            background: var(--bg-card-hover);
            color: var(--text-primary);
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-sidebar);
            border-top: 1px solid var(--border-color);
            padding: 50px 0 30px;
            margin-top: auto;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 30px;
        }
        .site-footer .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .site-footer .footer-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
        }
        .site-footer .footer-logo span {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
        }
        .site-footer .footer-logo span span { color: var(--primary); }
        .site-footer .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 320px;
        }
        .site-footer .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .site-footer .footer-col ul li { margin-bottom: 10px; }
        .site-footer .footer-col ul li a {
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            font-size: 13px;
            color: var(--text-muted);
        }
        .site-footer .footer-links { display: flex; gap: 20px; }
        .site-footer .footer-links a { color: var(--text-muted); font-size: 13px; }
        .site-footer .footer-links a:hover { color: var(--primary-light); }

        /* ===== Mobile Toggle ===== */
        .mobile-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 1100;
            width: 44px;
            height: 44px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            font-size: 20px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }
        .mobile-toggle:hover { background: var(--bg-card-hover); border-color: var(--primary); }
        .sidebar-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.6);
            z-index: 999;
            backdrop-filter: blur(4px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .article-hero h1 { font-size: 2rem; }
        }

        @media (max-width: 768px) {
            .mobile-toggle { display: flex; }
            .sidebar-overlay.active { display: block; }
            .sidebar {
                transform: translateX(-100%);
                width: 280px;
            }
            .sidebar.open { transform: translateX(0); }
            .main-content { margin-left: 0; }
            .container { padding: 0 20px; }
            .article-hero { padding: 40px 0 30px; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-hero .article-meta { gap: 12px 16px; }
            .site-footer .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .site-footer .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
            .article-body { padding: 0; }
            .article-nav-links { flex-direction: column; align-items: stretch; }
            .article-nav-links a { justify-content: center; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .article-hero h1 { font-size: 1.35rem; }
            .article-hero .article-summary { font-size: 0.95rem; }
            .article-body .content { font-size: 0.98rem; }
            .article-body .content h2 { font-size: 1.3rem; }
            .not-found-box { padding: 40px 16px; }
        }

        @media (min-width: 769px) {
            .sidebar { transform: translateX(0) !important; }
            .sidebar-overlay { display: none !important; }
        }

/* roulang page: category1 */
/* ===== CSS Variables ===== */
        :root {
            --primary: #e74c3c;
            --primary-dark: #c0392b;
            --primary-light: #f1948a;
            --primary-alpha: rgba(231, 76, 60, 0.12);
            --secondary: #f39c12;
            --secondary-dark: #d68910;
            --accent: #2ecc71;
            --accent-dark: #27ae60;
            --bg-dark: #0f0f1a;
            --bg-main: #1a1a2e;
            --bg-card: #16213e;
            --bg-card-hover: #1c2a4a;
            --bg-elevated: #1e2a4a;
            --bg-hero-overlay: rgba(15, 15, 26, 0.82);
            --text-primary: #f0f0f5;
            --text-secondary: #b0b0c8;
            --text-muted: #7a7a9a;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-light: rgba(255, 255, 255, 0.12);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(231, 76, 60, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --sidebar-width: 240px;
            --sidebar-collapsed: 68px;
            --header-height: 0px;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --font-display: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
        }

        /* ===== 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);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            display: flex;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-display);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
        }
        p {
            color: var(--text-secondary);
            margin-bottom: 0.75rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Sidebar Navigation (App Shell - 左侧) ===== */
        .app-shell {
            display: flex;
            width: 100%;
            min-height: 100vh;
        }
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-main);
            border-right: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            transition: var(--transition);
            overflow-y: auto;
            overflow-x: hidden;
        }
        .sidebar-brand {
            display: flex;
            align-items: center;
            padding: 20px 18px 12px;
            border-bottom: 1px solid var(--border-color);
            flex-shrink: 0;
        }
        .sidebar-brand .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
        }
        .sidebar-brand .logo-text {
            margin-left: 12px;
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .sidebar-brand .logo-text span {
            color: var(--primary);
        }
        .sidebar-nav {
            flex: 1;
            padding: 16px 10px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .sidebar-nav .nav-item {
            display: flex;
            align-items: center;
            padding: 11px 14px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            gap: 12px;
            position: relative;
        }
        .sidebar-nav .nav-item i {
            width: 22px;
            text-align: center;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .sidebar-nav .nav-item:hover {
            background: var(--bg-card);
            color: var(--text-primary);
        }
        .sidebar-nav .nav-item.active {
            background: var(--primary-alpha);
            color: var(--primary);
            font-weight: 600;
        }
        .sidebar-nav .nav-item.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 28px;
            background: var(--primary);
            border-radius: 2px;
        }
        .sidebar-nav .nav-divider {
            height: 1px;
            background: var(--border-color);
            margin: 12px 14px;
        }
        .sidebar-nav .nav-label {
            padding: 8px 14px 4px;
            font-size: 0.7rem;
            text-transform: uppercase;
            letter-spacing: 1.2px;
            color: var(--text-muted);
            font-weight: 600;
        }
        .sidebar-footer {
            padding: 14px 18px;
            border-top: 1px solid var(--border-color);
            flex-shrink: 0;
        }
        .sidebar-footer .user-info {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.85rem;
            color: var(--text-secondary);
        }
        .sidebar-footer .user-info .avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            color: #fff;
        }

        /* ===== Main Content Area ===== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            background: var(--bg-dark);
            position: relative;
        }
        .page-content {
            flex: 1;
            padding-top: 0;
        }

        /* ===== Mobile Header (汉堡菜单) ===== */
        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: var(--bg-main);
            border-bottom: 1px solid var(--border-color);
            z-index: 999;
            padding: 0 16px;
            align-items: center;
            justify-content: space-between;
        }
        .mobile-header .menu-toggle {
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.4rem;
            padding: 8px;
            cursor: pointer;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .mobile-header .menu-toggle:hover {
            background: var(--bg-card);
        }
        .mobile-header .mobile-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
        }
        .mobile-header .mobile-logo .logo-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            font-weight: 800;
            color: #fff;
        }

        /* ===== Mobile Sidebar Overlay ===== */
        .sidebar-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            z-index: 999;
            backdrop-filter: blur(6px);
        }
        .sidebar-overlay.open {
            display: block;
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, var(--bg-main) 0%, var(--bg-card) 100%);
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            pointer-events: none;
        }
        .page-banner .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-alpha);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 16px;
            border: 1px solid rgba(231, 76, 60, 0.2);
        }
        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            line-height: 1.2;
            margin-bottom: 16px;
            background: linear-gradient(135deg, var(--text-primary) 40%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-banner p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.8;
        }
        .page-banner .banner-stats {
            display: flex;
            gap: 32px;
            margin-top: 28px;
            flex-wrap: wrap;
        }
        .page-banner .banner-stats .stat-item {
            display: flex;
            flex-direction: column;
        }
        .page-banner .banner-stats .stat-item .stat-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
        }
        .page-banner .banner-stats .stat-item .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* ===== Section Shared ===== */
        .section-block {
            padding: 70px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .section-block:last-of-type {
            border-bottom: none;
        }
        .section-block .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-block .section-subtitle {
            color: var(--text-muted);
            font-size: 1rem;
            margin-bottom: 40px;
            max-width: 600px;
        }
        .section-block .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 40px;
            flex-wrap: wrap;
            gap: 16px;
        }
        .section-block .section-header .section-title {
            margin-bottom: 4px;
        }
        .section-block .section-header .section-subtitle {
            margin-bottom: 0;
        }

        /* ===== Guide Cards Grid ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg), var(--shadow-glow);
            border-color: var(--border-light);
            background: var(--bg-card-hover);
        }
        .guide-card .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
            background: var(--bg-main);
        }
        .guide-card .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card .card-tags {
            display: flex;
            gap: 6px;
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .guide-card .card-tags .tag {
            background: var(--primary-alpha);
            color: var(--primary-light);
            padding: 2px 12px;
            border-radius: 30px;
            font-size: 0.72rem;
            font-weight: 600;
            border: 1px solid rgba(231, 76, 60, 0.15);
        }
        .guide-card .card-tags .tag.tag-secondary {
            background: rgba(46, 204, 113, 0.12);
            color: var(--accent);
            border-color: rgba(46, 204, 113, 0.15);
        }
        .guide-card .card-tags .tag.tag-gold {
            background: rgba(243, 156, 18, 0.12);
            color: var(--secondary);
            border-color: rgba(243, 156, 18, 0.15);
        }
        .guide-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .guide-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            flex: 1;
            margin-bottom: 14px;
        }
        .guide-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            padding-top: 14px;
            margin-top: auto;
        }
        .guide-card .card-meta i {
            margin-right: 4px;
        }
        .guide-card .card-meta .read-more {
            color: var(--primary-light);
            font-weight: 600;
            transition: var(--transition);
        }
        .guide-card .card-meta .read-more:hover {
            color: var(--primary);
        }

        /* ===== Featured Guide (图文大卡) ===== */
        .featured-guide {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .featured-guide:hover {
            box-shadow: var(--shadow-lg);
            border-color: var(--border-light);
        }
        .featured-guide .featured-img {
            width: 100%;
            height: 100%;
            min-height: 320px;
            object-fit: cover;
            background: var(--bg-main);
        }
        .featured-guide .featured-body {
            padding: 36px 36px 36px 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .featured-guide .featured-body .badge-featured {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 700;
            margin-bottom: 16px;
            width: fit-content;
        }
        .featured-guide .featured-body h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .featured-guide .featured-body p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-bottom: 20px;
        }
        .featured-guide .featured-body .btn-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            cursor: pointer;
            border: 2px solid transparent;
            justify-content: center;
            text-align: center;
            line-height: 1.4;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(231, 76, 60, 0.3);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            border-color: var(--border-light);
        }
        .btn-outline:hover {
            background: var(--bg-card);
            color: var(--text-primary);
            border-color: var(--text-muted);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 6px 16px;
            font-size: 0.8rem;
        }
        .btn-lg {
            padding: 14px 34px;
            font-size: 1rem;
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 760px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-item .faq-question {
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-item .faq-question i {
            color: var(--primary);
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .faq-item .faq-question:hover {
            background: var(--bg-card-hover);
        }
        .faq-item .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
        }
        .faq-item .faq-answer.show {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--bg-card), var(--bg-elevated));
            border-radius: var(--radius-lg);
            padding: 60px 50px;
            text-align: center;
            border: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.06;
            pointer-events: none;
        }
        .cta-block h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-block p {
            color: var(--text-secondary);
            max-width: 520px;
            margin: 0 auto 28px;
            font-size: 1rem;
        }
        .cta-block .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-main);
            border-top: 1px solid var(--border-color);
            padding: 50px 0 30px;
            margin-top: auto;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .site-footer .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .site-footer .footer-brand .footer-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 800;
            color: #fff;
        }
        .site-footer .footer-brand .footer-logo span {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
        }
        .site-footer .footer-brand .footer-logo span span {
            color: var(--primary);
        }
        .site-footer .footer-brand p {
            font-size: 0.88rem;
            color: var(--text-muted);
            max-width: 360px;
        }
        .site-footer .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        .site-footer .footer-col ul li {
            margin-bottom: 8px;
        }
        .site-footer .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 28px;
            border-top: 1px solid var(--border-color);
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .site-footer .footer-bottom .footer-links {
            display: flex;
            gap: 20px;
        }
        .site-footer .footer-bottom .footer-links a {
            color: var(--text-muted);
            font-size: 0.82rem;
        }
        .site-footer .footer-bottom .footer-links a:hover {
            color: var(--primary-light);
        }

        /* ===== Back to Top ===== */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 46px;
            height: 46px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50%;
            font-size: 1.2rem;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            z-index: 100;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
        }
        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .back-to-top:hover {
            background: var(--primary-dark);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .sidebar {
                width: var(--sidebar-collapsed);
            }
            .sidebar .logo-text,
            .sidebar .nav-item span,
            .sidebar .nav-label,
            .sidebar .nav-divider,
            .sidebar .sidebar-footer .user-info .name {
                display: none;
            }
            .sidebar .nav-item {
                justify-content: center;
                padding: 12px 0;
            }
            .sidebar .nav-item i {
                margin: 0;
                font-size: 1.2rem;
            }
            .sidebar .nav-item.active::before {
                left: 0;
                width: 3px;
                height: 100%;
                top: 0;
                transform: none;
            }
            .sidebar .sidebar-brand {
                justify-content: center;
                padding: 16px 8px;
            }
            .sidebar .sidebar-brand .logo-icon {
                margin: 0;
            }
            .sidebar .sidebar-footer .user-info {
                justify-content: center;
            }
            .main-content {
                margin-left: var(--sidebar-collapsed);
            }
            .featured-guide {
                grid-template-columns: 1fr;
            }
            .featured-guide .featured-body {
                padding: 28px 24px;
            }
            .featured-guide .featured-img {
                min-height: 240px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
                width: 280px;
                transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .sidebar .logo-text,
            .sidebar .nav-item span,
            .sidebar .nav-label,
            .sidebar .nav-divider,
            .sidebar .sidebar-footer .user-info .name {
                display: inline;
            }
            .sidebar .nav-item {
                justify-content: flex-start;
                padding: 11px 18px;
            }
            .sidebar .nav-item i {
                margin-right: 12px;
                font-size: 1.1rem;
            }
            .sidebar .sidebar-brand {
                justify-content: flex-start;
                padding: 20px 18px 12px;
            }
            .sidebar .sidebar-brand .logo-icon {
                margin-right: 12px;
            }
            .sidebar .sidebar-footer .user-info {
                justify-content: flex-start;
                padding: 0 4px;
            }
            .main-content {
                margin-left: 0;
            }
            .mobile-header {
                display: flex;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner {
                padding: 60px 0 40px;
            }
            .section-block {
                padding: 50px 0;
            }
            .section-block .section-title {
                font-size: 1.6rem;
            }
            .guide-grid {
                grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
                gap: 18px;
            }
            .cta-block {
                padding: 40px 24px;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .page-banner .banner-stats {
                gap: 20px;
            }
            .page-banner .banner-stats .stat-item .stat-num {
                font-size: 1.4rem;
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .featured-guide .featured-body h2 {
                font-size: 1.3rem;
            }
            .featured-guide .featured-body .btn-group {
                flex-direction: column;
            }
            .section-block .section-title {
                font-size: 1.3rem;
            }
            .cta-block h2 {
                font-size: 1.2rem;
            }
            .cta-block .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .faq-item .faq-question {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-item .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
            .back-to-top {
                bottom: 16px;
                right: 16px;
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 8px;
        }
        .mt-2 {
            margin-top: 16px;
        }
        .mt-3 {
            margin-top: 28px;
        }
        .mb-1 {
            margin-bottom: 8px;
        }
        .mb-2 {
            margin-bottom: 16px;
        }
        .gap-1 {
            gap: 8px;
        }
        .gap-2 {
            gap: 16px;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .d-flex {
            display: flex;
        }
        .align-center {
            align-items: center;
        }
        .justify-between {
            justify-content: space-between;
        }