/* roulang page: index */
:root {
            --primary: #1e3a5f;
            --primary-light: #2c5282;
            --primary-dark: #15273f;
            --accent: #c8903e;
            --accent-light: #d4a853;
            --accent-dark: #a6762e;
            --text-main: #1a202c;
            --text-secondary: #4a5568;
            --text-muted: #718096;
            --text-light: #a0aec0;
            --bg-white: #ffffff;
            --bg-light: #f7f8fa;
            --bg-lighter: #edf0f4;
            --bg-dark: #1a2740;
            --bg-darker: #111d2e;
            --border: #e2e8f0;
            --border-light: #edf2f7;
            --success: #38a169;
            --success-light: #48bb78;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.07), 0 2px 6px rgba(0,0,0,0.04);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.09), 0 3px 10px rgba(0,0,0,0.05);
            --shadow-xl: 0 16px 48px rgba(0,0,0,0.11), 0 6px 16px rgba(0,0,0,0.06);
            --shadow-card-hover: 0 12px 36px rgba(0,0,0,0.12), 0 4px 14px rgba(0,0,0,0.06);
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --max-width: 1240px;
            --nav-height: 68px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text-main);
            background: var(--bg-white);
            overflow-x: hidden;
            min-height: 100vh;
        }

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

        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;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 18px;
            }
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 1px 6px rgba(0,0,0,0.04);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base);
        }

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

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
            height: 100%;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            z-index: 1001;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.3px;
            white-space: nowrap;
            line-height: 1.2;
        }

        .logo-text span {
            color: var(--accent);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0 auto 0 36px;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-size: 0.94rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .main-nav a:hover {
            color: var(--primary);
            background: var(--bg-lighter);
        }

        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
            background: #e8ecf3;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: var(--radius-full);
            padding: 7px 14px 7px 16px;
            gap: 8px;
            transition: all var(--transition-fast);
            width: 200px;
        }

        .search-box:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(30,58,95,0.08);
            background: var(--bg-white);
            width: 240px;
        }

        .search-box input {
            border: none;
            background: transparent;
            width: 100%;
            font-size: 0.9rem;
            color: var(--text-main);
            min-width: 0;
        }

        .search-box input::placeholder {
            color: var(--text-muted);
        }

        .search-box button {
            color: var(--text-muted);
            font-size: 0.95rem;
            transition: color var(--transition-fast);
            flex-shrink: 0;
        }

        .search-box button:hover {
            color: var(--primary);
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.92rem;
            padding: 9px 20px;
            border-radius: var(--radius-full);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }

        .btn-nav-cta:hover {
            background: var(--accent-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

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

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

        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--primary);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .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);
        }

        @media (max-width: 920px) {
            .main-nav {
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: var(--bg-white);
                flex-direction: column;
                align-items: center;
                justify-content: center;
                gap: 12px;
                margin: 0;
                opacity: 0;
                pointer-events: none;
                transition: opacity var(--transition-base);
                z-index: 999;
            }
            .main-nav.open {
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a {
                font-size: 1.15rem;
                padding: 12px 28px;
            }
            .hamburger {
                display: flex;
            }
            .header-actions .search-box {
                display: none;
            }
            .header-actions .btn-nav-cta {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .header-inner {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .logo-text {
                font-size: 0.9rem;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }
            .btn-nav-cta {
                font-size: 0.8rem;
                padding: 7px 13px;
            }
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            min-height: 560px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #0f1c30 0%, #1a2f4a 40%, #1e3a5f 100%);
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.38;
            mix-blend-mode: overlay;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(200,144,62,0.08) 0%, transparent 60%),
                        radial-gradient(ellipse at 70% 30%, rgba(44,82,130,0.15) 0%, transparent 55%);
        }

        .hero .container {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            padding-top: 40px;
            padding-bottom: 40px;
        }

        .hero-content {
            flex: 1;
            max-width: 600px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.1);
            border: 1px solid rgba(255,255,255,0.2);
            color: #fff;
            font-size: 0.88rem;
            font-weight: 500;
            padding: 7px 16px;
            border-radius: var(--radius-full);
            margin-bottom: 22px;
            backdrop-filter: blur(4px);
            letter-spacing: 0.5px;
        }

        .hero-badge i {
            color: var(--accent-light);
            font-size: 0.85rem;
        }

        .hero-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #ffffff;
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

        .hero-content h1 .highlight {
            color: var(--accent-light);
            position: relative;
        }

        .hero-content p {
            font-size: 1.12rem;
            color: rgba(255,255,255,0.78);
            line-height: 1.7;
            margin-bottom: 30px;
            max-width: 500px;
        }

        .hero-btns {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            transition: all var(--transition-base);
            letter-spacing: 0.4px;
            box-shadow: 0 4px 20px rgba(200,144,62,0.35);
        }

        .btn-hero-primary:hover {
            background: var(--accent-light);
            box-shadow: 0 8px 30px rgba(200,144,62,0.45);
            transform: translateY(-2px);
        }

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

        .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            border: 2px solid rgba(255,255,255,0.4);
            transition: all var(--transition-base);
            letter-spacing: 0.4px;
        }

        .btn-hero-outline:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.08);
        }

        .hero-visual {
            flex: 0 0 420px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-card-visual {
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.15);
            border-radius: var(--radius-xl);
            padding: 32px 28px;
            backdrop-filter: blur(8px);
            text-align: center;
            box-shadow: 0 20px 50px rgba(0,0,0,0.3);
        }

        .hero-card-visual .stat-row {
            display: flex;
            gap: 28px;
            justify-content: center;
            margin-bottom: 20px;
        }

        .hero-card-visual .stat-item {
            text-align: center;
        }

        .hero-card-visual .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-light);
            line-height: 1;
        }

        .hero-card-visual .stat-label {
            font-size: 0.8rem;
            color: rgba(255,255,255,0.6);
            margin-top: 4px;
        }

        .hero-card-visual .hero-img-placeholder {
            width: 100%;
            height: 160px;
            background: rgba(255,255,255,0.05);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.3);
            font-size: 2.5rem;
        }

        @media (max-width: 1024px) {
            .hero .container {
                flex-direction: column;
                text-align: center;
                gap: 30px;
            }
            .hero-content {
                max-width: 100%;
            }
            .hero-content p {
                max-width: 100%;
            }
            .hero-btns {
                justify-content: center;
            }
            .hero-visual {
                flex: 0 0 auto;
                width: 100%;
                max-width: 420px;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 520px) {
            .hero {
                min-height: 440px;
            }
            .hero-content h1 {
                font-size: 1.7rem;
            }
            .hero-content p {
                font-size: 0.95rem;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                font-size: 0.9rem;
                padding: 11px 22px;
            }
            .hero-card-visual {
                padding: 20px 16px;
            }
            .hero-card-visual .stat-num {
                font-size: 1.5rem;
            }
        }

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

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

        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 750;
            color: var(--text-main);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .section-desc {
            font-size: 1.02rem;
            color: var(--text-muted);
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.55rem;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

        /* ========== ADVANTAGES SECTION ========== */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .advantage-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 30px 22px;
            text-align: center;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .advantage-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 50px;
            height: 4px;
            background: var(--accent);
            border-radius: 0 0 4px 4px;
            opacity: 0;
            transition: all var(--transition-base);
        }

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

        .advantage-card:hover::before {
            opacity: 1;
            width: 70px;
        }

        .advantage-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: var(--bg-lighter);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.5rem;
            color: var(--primary);
            transition: all var(--transition-base);
        }

        .advantage-card:hover .advantage-icon {
            background: var(--primary);
            color: #fff;
        }

        .advantage-card h3 {
            font-size: 1.05rem;
            font-weight: 650;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .advantage-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.55;
        }

        @media (max-width: 1024px) {
            .advantages-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .advantages-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        /* ========== CATEGORY ENTRY ========== */
        .category-entry-wrap {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        .category-entry-card {
            display: flex;
            align-items: center;
            gap: 32px;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-xl);
            overflow: hidden;
            transition: all var(--transition-base);
            cursor: pointer;
        }

        .category-entry-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: transparent;
            transform: translateY(-2px);
        }

        .category-entry-img {
            flex: 0 0 320px;
            height: 220px;
            overflow: hidden;
            position: relative;
        }

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

        .category-entry-card:hover .category-entry-img img {
            transform: scale(1.04);
        }

        .category-entry-body {
            flex: 1;
            padding: 24px 28px 24px 0;
        }

        .category-entry-body .tag {
            display: inline-block;
            background: #fef3e0;
            color: var(--accent-dark);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: var(--radius-full);
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        .category-entry-body h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .category-entry-body p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 14px;
        }

        .category-entry-body .btn-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.94rem;
            transition: gap var(--transition-fast);
        }

        .category-entry-body .btn-link:hover {
            gap: 10px;
            color: var(--primary-light);
        }

        @media (max-width: 768px) {
            .category-entry-card {
                flex-direction: column;
            }
            .category-entry-img {
                flex: 0 0 auto;
                width: 100%;
                height: 180px;
            }
            .category-entry-body {
                padding: 18px 20px 22px;
            }
        }

        /* ========== CMS LIST SECTION ========== */
        .cms-list-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .cms-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .cms-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: transparent;
            transform: translateY(-3px);
        }

        .cms-card-img {
            width: 100%;
            height: 190px;
            overflow: hidden;
            position: relative;
        }

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

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

        .cms-card-img .cms-category-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(30,58,95,0.88);
            color: #fff;
            font-size: 0.76rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.5px;
            backdrop-filter: blur(4px);
        }

        .cms-card-body {
            padding: 18px 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .cms-card-body h3 {
            font-size: 1rem;
            font-weight: 650;
            color: var(--text-main);
            line-height: 1.45;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .cms-card-body h3 a {
            color: inherit;
            transition: color var(--transition-fast);
        }

        .cms-card-body h3 a:hover {
            color: var(--primary-light);
        }

        .cms-card-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.5;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }

        .cms-card-meta {
            font-size: 0.8rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .cms-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 20px;
            color: var(--text-muted);
            font-size: 1rem;
            background: var(--bg-light);
            border-radius: var(--radius-lg);
        }

        @media (max-width: 1024px) {
            .cms-list-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 560px) {
            .cms-list-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== COMPARISON SECTION ========== */
        .comparison-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .comparison-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 30px 24px;
            text-align: center;
            transition: all var(--transition-base);
            position: relative;
        }

        .comparison-card.featured {
            border-color: var(--accent);
            box-shadow: var(--shadow-lg);
            transform: scale(1.03);
            background: #fffefb;
        }

        .comparison-card.featured::after {
            content: '推荐';
            position: absolute;
            top: -13px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent);
            color: #fff;
            font-size: 0.78rem;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: var(--radius-full);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .comparison-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .comparison-card.featured:hover {
            box-shadow: var(--shadow-xl);
        }

        .comparison-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .comparison-card .comp-price {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 16px;
        }

        .comparison-card.featured .comp-price {
            color: var(--accent-dark);
        }

        .comparison-card ul {
            text-align: left;
            margin-bottom: 20px;
        }

        .comparison-card ul li {
            padding: 7px 0;
            font-size: 0.9rem;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .comparison-card ul li i {
            color: var(--success);
            font-size: 0.85rem;
            flex-shrink: 0;
        }

        .btn-comp {
            display: inline-block;
            width: 100%;
            padding: 11px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.94rem;
            transition: all var(--transition-fast);
            text-align: center;
            background: var(--bg-lighter);
            color: var(--primary);
            border: 1px solid var(--border);
        }

        .btn-comp:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .comparison-card.featured .btn-comp {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }

        .comparison-card.featured .btn-comp:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
        }

        @media (max-width: 1024px) {
            .comparison-grid {
                grid-template-columns: 1fr;
                max-width: 440px;
                margin: 0 auto;
            }
            .comparison-card.featured {
                transform: none;
            }
        }

        /* ========== STATS SECTION ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            text-align: center;
            padding: 28px 16px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            transition: all var(--transition-base);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-md);
        }

        .stat-card .stat-value {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 6px;
        }

        .stat-card .stat-suffix {
            color: var(--accent);
        }

        .stat-card .stat-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        @media (max-width: 768px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .stat-card .stat-value {
                font-size: 2rem;
            }
        }
        @media (max-width: 420px) {
            .stats-row {
                grid-template-columns: 1fr;
            }
        }

        /* ========== PROCESS SECTION ========== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: var(--border);
            z-index: 0;
        }

        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .step-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-white);
            border: 2px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--primary);
            transition: all var(--transition-base);
            position: relative;
        }

        .process-step:hover .step-circle {
            border-color: var(--accent);
            background: #fffefb;
            box-shadow: var(--shadow-md);
            color: var(--accent-dark);
        }

        .process-step h4 {
            font-size: 1rem;
            font-weight: 650;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .process-step p {
            font-size: 0.86rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        @media (max-width: 768px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px 18px;
            }
            .process-steps::before {
                display: none;
            }
        }
        @media (max-width: 420px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
        }

        /* ========== FAQ SECTION ========== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-white);
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: #d0d5dd;
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 20px;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--text-main);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            background: transparent;
            transition: background var(--transition-fast);
        }

        .faq-question:hover {
            background: var(--bg-light);
        }

        .faq-question i {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--accent);
        }

        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
            padding: 70px 0;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 2rem;
            font-weight: 750;
            color: #fff;
            margin-bottom: 14px;
        }

        .cta-inner p {
            font-size: 1.04rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 28px;
            line-height: 1.6;
        }

        .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            padding: 14px 36px;
            border-radius: var(--radius-full);
            transition: all var(--transition-base);
            letter-spacing: 0.4px;
            box-shadow: 0 6px 24px rgba(200,144,62,0.4);
        }

        .btn-cta-large:hover {
            background: var(--accent-light);
            box-shadow: 0 10px 34px rgba(200,144,62,0.5);
            transform: translateY(-2px);
        }

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

        @media (max-width: 520px) {
            .cta-inner h2 {
                font-size: 1.5rem;
            }
            .btn-cta-large {
                font-size: 0.95rem;
                padding: 12px 28px;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-darker);
            color: rgba(255,255,255,0.7);
            padding: 48px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }

        .footer-brand .logo-wrap {
            margin-bottom: 12px;
        }

        .footer-brand .logo-text {
            color: #fff;
            font-size: 1.1rem;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.5);
            line-height: 1.6;
            max-width: 320px;
        }

        .footer-links h4 {
            font-size: 0.95rem;
            font-weight: 650;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }

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

        .footer-links ul li a {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.5);
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.84rem;
            color: rgba(255,255,255,0.4);
            letter-spacing: 0.3px;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                text-align: center;
            }
            .footer-brand p {
                max-width: 100%;
                margin: 0 auto;
            }
            .footer-links ul {
                align-items: center;
            }
        }

        /* ========== UTILITY ========== */
        .bg-light-section {
            background: var(--bg-light);
        }

        .text-accent {
            color: var(--accent);
        }

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

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .section {
            animation: fadeInUp 0.6s ease both;
        }

/* roulang page: category1 */
:root {
            --color-primary: #1a365d;
            --color-primary-light: #1e4d8c;
            --color-primary-dark: #0f2240;
            --color-accent: #c8943e;
            --color-accent-light: #d4a853;
            --color-accent-dark: #a6782c;
            --color-bg: #f7f8fa;
            --color-surface: #ffffff;
            --color-text: #1a1a2e;
            --color-text-secondary: #5a6170;
            --color-text-muted: #8b919e;
            --color-border: #e2e5ec;
            --color-border-light: #eef0f4;
            --color-success: #2d8a56;
            --color-warning: #e8a020;
            --color-danger: #c0392b;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.12);
            --spacing-xs: 0.5rem;
            --spacing-sm: 0.75rem;
            --spacing-md: 1.25rem;
            --spacing-lg: 2rem;
            --spacing-xl: 3rem;
            --spacing-2xl: 4.5rem;
            --spacing-3xl: 6rem;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
            --max-width: 1200px;
            --max-width-narrow: 900px;
            --header-height: 68px;
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1.2);
        }

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

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

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

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

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

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

        /* ========== HEADER & NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-lg);
            height: 100%;
        }
        .header-brand {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-shrink: 0;
        }
        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            color: #fff;
            font-weight: 800;
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(26, 54, 93, 0.25);
        }
        .logo-text {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--color-primary);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-md);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--color-primary);
            background: rgba(26, 54, 93, 0.04);
        }
        .main-nav a.active {
            color: var(--color-primary);
            background: rgba(26, 54, 93, 0.07);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2.5px;
            background: var(--color-accent);
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-shrink: 0;
        }
        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
            background: var(--color-accent);
            color: #fff;
            white-space: nowrap;
            box-shadow: 0 2px 8px rgba(200, 148, 62, 0.3);
            transition: all var(--transition-base);
        }
        .btn-nav-cta:hover {
            background: var(--color-accent-dark);
            box-shadow: 0 4px 16px rgba(200, 148, 62, 0.4);
            transform: translateY(-1px);
        }
        .btn-nav-cta:active {
            transform: translateY(0);
            box-shadow: 0 1px 4px rgba(200, 148, 62, 0.3);
        }

        /* Mobile menu toggle */
        .menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: transparent;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--color-text);
            border: 1px solid var(--color-border);
            transition: all var(--transition-fast);
        }
        .menu-toggle:hover {
            background: var(--color-bg);
            border-color: var(--color-primary-light);
            color: var(--color-primary);
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            min-height: 340px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 54, 93, 0.88) 0%, rgba(15, 34, 64, 0.82) 40%, rgba(26, 54, 93, 0.78) 100%);
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: var(--spacing-md);
            padding-top: var(--spacing-xl);
            padding-bottom: var(--spacing-xl);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.45);
            font-size: 0.7rem;
        }
        .breadcrumb .current {
            color: var(--color-accent-light);
            font-weight: 500;
        }
        .page-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.03em;
            line-height: 1.25;
            max-width: 700px;
        }
        .page-banner .banner-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            line-height: 1.6;
        }
        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(6px);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .banner-badge i {
            color: var(--color-accent-light);
            font-size: 0.75rem;
        }

        /* ========== MAIN CONTENT ========== */
        .site-main {
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        /* Sections */
        .section {
            padding: var(--spacing-2xl) 0;
        }
        .section--alt {
            background: var(--color-surface);
        }
        .section--dark {
            background: var(--color-primary-dark);
            color: #fff;
        }
        .section--dark h2,
        .section--dark h3 {
            color: #fff;
        }
        .section-header {
            text-align: center;
            margin-bottom: var(--spacing-xl);
        }
        .section-header h2 {
            font-size: 1.9rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            margin-bottom: var(--spacing-xs);
        }
        .section-header p {
            color: var(--color-text-secondary);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
        }
        .section--dark .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            background: rgba(200, 148, 62, 0.12);
            color: var(--color-accent-dark);
            margin-bottom: var(--spacing-sm);
        }
        .section--dark .section-tag {
            background: rgba(200, 148, 62, 0.2);
            color: var(--color-accent-light);
        }

        /* Overview intro */
        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }
        .overview-grid .overview-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .overview-grid .overview-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
        }
        .overview-content h3 {
            font-size: 1.5rem;
            margin-bottom: var(--spacing-md);
        }
        .overview-content p {
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: var(--spacing-md);
        }
        .overview-stats {
            display: flex;
            gap: var(--spacing-lg);
            margin-top: var(--spacing-lg);
            flex-wrap: wrap;
        }
        .stat-item {
            text-align: center;
            padding: var(--spacing-md) var(--spacing-lg);
            background: var(--color-bg);
            border-radius: var(--radius-md);
            min-width: 100px;
        }
        .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1;
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-top: 4px;
        }

        /* Steps */
        .steps-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-lg);
            max-width: var(--max-width-narrow);
            margin: 0 auto;
            position: relative;
        }
        .steps-list::before {
            content: '';
            position: absolute;
            left: 31px;
            top: 14px;
            bottom: 14px;
            width: 2px;
            background: var(--color-border);
            z-index: 0;
        }
        .step-card {
            display: flex;
            gap: var(--spacing-lg);
            position: relative;
            z-index: 1;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
            border-color: var(--color-accent-light);
        }
        .step-number {
            width: 56px;
            height: 56px;
            min-width: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            color: #fff;
            font-weight: 800;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 14px rgba(26, 54, 93, 0.3);
            flex-shrink: 0;
        }
        .step-body h3 {
            font-size: 1.15rem;
            margin-bottom: 4px;
        }
        .step-body p {
            color: var(--color-text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .step-tip {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 10px;
            border-radius: var(--radius-sm);
            font-size: 0.8rem;
            font-weight: 500;
            background: rgba(45, 138, 86, 0.08);
            color: var(--color-success);
            margin-top: 8px;
        }
        .step-tip i {
            font-size: 0.7rem;
        }

        /* Guide cards grid */
        .guide-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }
        .guide-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--color-accent-light);
        }
        .guide-card-image {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
            background: var(--color-bg);
        }
        .guide-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .guide-card:hover .guide-card-image img {
            transform: scale(1.06);
        }
        .guide-card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 10px;
            border-radius: var(--radius-sm);
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--color-accent);
            color: #fff;
            z-index: 2;
        }
        .guide-card-body {
            padding: var(--spacing-md) var(--spacing-lg) var(--spacing-lg);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card-body h3 {
            font-size: 1.05rem;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .guide-card-body p {
            color: var(--color-text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
            flex: 1;
        }
        .guide-card-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            margin-top: var(--spacing-sm);
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }
        .guide-card-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-top: var(--spacing-sm);
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-primary);
            transition: color var(--transition-fast);
        }
        .guide-card-link:hover {
            color: var(--color-accent-dark);
        }
        .guide-card-link i {
            font-size: 0.75rem;
            transition: transform var(--transition-fast);
        }
        .guide-card-link:hover i {
            transform: translateX(3px);
        }

        /* Tips section */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-lg);
            max-width: var(--max-width-narrow);
            margin: 0 auto;
        }
        .tip-card {
            display: flex;
            gap: var(--spacing-md);
            padding: var(--spacing-lg);
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition-base);
        }
        .tip-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-accent-light);
        }
        .tip-icon {
            width: 48px;
            height: 48px;
            min-width: 48px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .tip-icon--safe {
            background: rgba(45, 138, 86, 0.1);
            color: var(--color-success);
        }
        .tip-icon--warn {
            background: rgba(232, 160, 32, 0.1);
            color: var(--color-warning);
        }
        .tip-icon--info {
            background: rgba(26, 54, 93, 0.08);
            color: var(--color-primary);
        }
        .tip-icon--key {
            background: rgba(200, 148, 62, 0.1);
            color: var(--color-accent-dark);
        }
        .tip-body h3 {
            font-size: 1rem;
            margin-bottom: 4px;
        }
        .tip-body p {
            color: var(--color-text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        /* FAQ */
        .faq-list {
            max-width: var(--max-width-narrow);
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-base);
        }
        .faq-item.active {
            border-color: var(--color-accent-light);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing-md) var(--spacing-lg);
            background: transparent;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            cursor: pointer;
            gap: var(--spacing-md);
        }
        .faq-question:hover {
            color: var(--color-primary);
            background: rgba(26, 54, 93, 0.02);
        }
        .faq-question i {
            transition: transform var(--transition-base);
            color: var(--color-text-muted);
            font-size: 0.85rem;
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--color-accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 var(--spacing-lg) var(--spacing-lg);
            color: var(--color-text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* CTA Section */
        .cta-section {
            text-align: center;
            padding: var(--spacing-2xl) 0;
            background: linear-gradient(160deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(200, 148, 62, 0.08);
            top: -120px;
            right: -100px;
            z-index: 0;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            width: 250px;
            height: 250px;
            border-radius: 50%;
            background: rgba(200, 148, 62, 0.06);
            bottom: -80px;
            left: -60px;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2rem;
            color: #fff;
            margin-bottom: var(--spacing-sm);
            font-weight: 800;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.05rem;
            max-width: 500px;
            margin: 0 auto var(--spacing-lg);
        }
        .btn-cta-lg {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: var(--radius-lg);
            font-weight: 700;
            font-size: 1.05rem;
            background: var(--color-accent);
            color: #fff;
            box-shadow: 0 6px 24px rgba(200, 148, 62, 0.4);
            transition: all var(--transition-base);
            letter-spacing: 0.03em;
        }
        .btn-cta-lg:hover {
            background: var(--color-accent-light);
            box-shadow: 0 10px 32px rgba(200, 148, 62, 0.5);
            transform: translateY(-2px);
        }
        .btn-cta-lg:active {
            transform: translateY(0);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0f1a2e;
            color: rgba(255, 255, 255, 0.75);
            padding: var(--spacing-2xl) 0 var(--spacing-lg);
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-xl);
        }
        .footer-brand .logo-wrap {
            margin-bottom: var(--spacing-sm);
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 340px;
        }
        .footer-links h4 {
            color: #fff;
            font-size: 0.95rem;
            margin-bottom: var(--spacing-sm);
            font-weight: 600;
            letter-spacing: 0.03em;
        }
        .footer-links ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--color-accent-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: var(--spacing-md);
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .guide-cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .overview-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .overview-grid .overview-image {
                order: -1;
                max-width: 500px;
                margin: 0 auto;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-lg);
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 768px) {
            :root {
                --header-height: 60px;
                --spacing-2xl: 3rem;
                --spacing-xl: 2rem;
            }
            .container {
                padding: 0 var(--spacing-md);
            }
            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--color-surface);
                flex-direction: column;
                padding: var(--spacing-md);
                gap: 2px;
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all var(--transition-base);
                z-index: 999;
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-md);
            }
            .main-nav a.active::after {
                display: none;
            }
            .main-nav a.active {
                border-left: 3px solid var(--color-accent);
            }
            .menu-toggle {
                display: flex;
            }
            .header-actions .btn-nav-cta {
                padding: 8px 14px;
                font-size: 0.82rem;
            }
            .page-banner {
                min-height: 260px;
            }
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .page-banner .banner-subtitle {
                font-size: 0.95rem;
            }
            .guide-cards-grid {
                grid-template-columns: 1fr;
                max-width: 420px;
                margin: 0 auto;
            }
            .tips-grid {
                grid-template-columns: 1fr;
            }
            .steps-list::before {
                left: 23px;
            }
            .step-card {
                flex-direction: column;
                gap: var(--spacing-sm);
                padding: var(--spacing-md);
            }
            .step-number {
                width: 42px;
                height: 42px;
                min-width: 42px;
                font-size: 1rem;
            }
            .overview-stats {
                gap: var(--spacing-sm);
            }
            .stat-item {
                padding: var(--spacing-sm) var(--spacing-md);
                min-width: 80px;
            }
            .stat-number {
                font-size: 1.4rem;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .footer-brand {
                grid-column: auto;
            }
            .btn-nav-cta span.btn-cta-text {
                display: none;
            }
            .btn-nav-cta {
                padding: 10px 12px;
                border-radius: 50%;
                aspect-ratio: 1;
            }
        }
        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.35rem;
            }
            .page-banner {
                min-height: 220px;
            }
            .logo-text {
                font-size: 0.9rem;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 16px;
            }
            .section {
                padding: var(--spacing-xl) 0;
            }
            .step-card {
                padding: var(--spacing-sm) var(--spacing-md);
            }
            .step-body h3 {
                font-size: 1rem;
            }
            .tip-card {
                flex-direction: column;
                gap: var(--spacing-sm);
                padding: var(--spacing-md);
            }
            .faq-question {
                font-size: 0.9rem;
                padding: var(--spacing-sm) var(--spacing-md);
            }
            .faq-answer-inner {
                padding: 0 var(--spacing-md) var(--spacing-md);
                font-size: 0.85rem;
            }
            .btn-cta-lg {
                padding: 12px 24px;
                font-size: 0.95rem;
            }
        }

/* roulang page: article */
:root {
            --color-primary: #1a56db;
            --color-primary-light: #3b82f6;
            --color-primary-lighter: #60a5fa;
            --color-primary-dark: #1e40af;
            --color-primary-bg: #eff6ff;
            --color-accent: #f59e0b;
            --color-accent-light: #fbbf24;
            --color-accent-dark: #d97706;
            --color-accent-bg: #fffbeb;
            --color-orange: #ff6b35;
            --color-orange-light: #ff8c5a;
            --color-bg: #f8fafc;
            --color-bg-alt: #f1f5f9;
            --color-white: #ffffff;
            --color-text: #1e293b;
            --color-text-secondary: #475569;
            --color-text-light: #64748b;
            --color-text-lighter: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-border-heavy: #cbd5e1;
            --color-success: #10b981;
            --color-success-bg: #ecfdf5;
            --radius-xs: 6px;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-2xl: 24px;
            --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow: 0 4px 12px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.09), 0 4px 8px rgba(0,0,0,0.05);
            --shadow-lg: 0 16px 40px rgba(0,0,0,0.11), 0 6px 12px rgba(0,0,0,0.06);
            --shadow-xl: 0 24px 56px rgba(0,0,0,0.13), 0 10px 20px rgba(0,0,0,0.07);
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --font-article: 'PingFang SC', 'Microsoft YaHei', 'Noto Serif SC', 'Georgia', 'Times New Roman', serif;
            --max-width: 1200px;
            --max-width-article: 780px;
            --max-width-narrow: 640px;
            --header-height: 68px;
            --section-gap: 64px;
            --section-gap-sm: 40px;
        }

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

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

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

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

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        ul, ol {
            list-style: none;
        }

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

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

        .container--medium {
            max-width: 1000px;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--shadow-xs);
            height: var(--header-height);
        }

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

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--color-primary-dark);
            white-space: nowrap;
        }

        .header-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #fff;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.15rem;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(26,86,219,0.25);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .main-nav a:hover {
            color: var(--color-primary);
            background: var(--color-primary-bg);
        }

        .main-nav a.active {
            color: var(--color-primary);
            background: var(--color-primary-bg);
            font-weight: 600;
        }

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

        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .header-search {
            display: flex;
            align-items: center;
            background: var(--color-bg-alt);
            border: 1px solid var(--color-border);
            border-radius: 24px;
            padding: 7px 14px;
            gap: 8px;
            transition: all var(--transition-fast);
        }

        .header-search:focus-within {
            border-color: var(--color-primary-light);
            box-shadow: 0 0 0 3px rgba(59,130,246,0.1);
            background: var(--color-white);
        }

        .header-search svg {
            flex-shrink: 0;
            color: var(--color-text-lighter);
            width: 16px;
            height: 16px;
        }

        .header-search input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 0.875rem;
            color: var(--color-text);
            width: 140px;
        }

        .header-search input::placeholder {
            color: var(--color-text-lighter);
        }

        .btn-cta-header {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            background: var(--color-primary);
            color: #fff;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.9rem;
            white-space: nowrap;
            transition: all var(--transition-fast);
            box-shadow: 0 2px 8px rgba(26,86,219,0.3);
        }

        .btn-cta-header:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 4px 14px rgba(26,86,219,0.4);
            transform: translateY(-1px);
            color: #fff;
        }

        .mobile-menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border);
            background: var(--color-white);
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

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

        /* ========== ARTICLE BANNER ========== */
        .article-banner {
            position: relative;
            background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 40%, #1a3c6e 100%);
            padding: 56px 0 48px;
            overflow: hidden;
            min-height: 260px;
            display: flex;
            align-items: center;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }

        .article-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--color-bg) 0%, transparent 100%);
        }

        .article-banner-content {
            position: relative;
            z-index: 2;
            max-width: var(--max-width-article);
            margin: 0 auto;
            padding: 0 24px;
            text-align: center;
        }

        .article-banner .category-tag {
            display: inline-block;
            padding: 5px 14px;
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            border: 1px solid rgba(255,255,255,0.25);
            color: #fff;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 0.03em;
            margin-bottom: 16px;
        }

        .article-banner h1 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.35;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .article-banner .banner-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 18px;
            color: rgba(255,255,255,0.75);
            font-size: 0.875rem;
            flex-wrap: wrap;
        }

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

        .article-banner .banner-meta .dot-sep {
            width: 3px;
            height: 3px;
            border-radius: 50%;
            background: rgba(255,255,255,0.4);
            flex-shrink: 0;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-wrap {
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border-light);
            background: var(--color-white);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--color-text-light);
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .sep {
            color: var(--color-text-lighter);
            flex-shrink: 0;
        }

        .breadcrumb .current {
            color: var(--color-text);
            font-weight: 500;
            max-width: 300px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ========== MAIN LAYOUT ========== */
        .article-main {
            flex: 1;
            padding: var(--section-gap-sm) 0 var(--section-gap);
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            align-items: start;
        }

        /* ========== ARTICLE CONTENT ========== */
        .article-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
        }

        .article-cover {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            display: block;
        }

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

        @media (max-width: 768px) {
            .article-body {
                padding: 24px 20px;
            }
        }

        .article-content {
            font-family: var(--font-article);
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--color-text);
        }

        .article-content h2 {
            font-family: var(--font-sans);
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--color-text);
            margin: 32px 0 14px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--color-primary-bg);
            letter-spacing: -0.005em;
        }

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

        .article-content h3 {
            font-family: var(--font-sans);
            font-size: 1.18rem;
            font-weight: 600;
            color: var(--color-text);
            margin: 24px 0 10px;
        }

        .article-content h4 {
            font-family: var(--font-sans);
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-text-secondary);
            margin: 20px 0 8px;
        }

        .article-content p {
            margin-bottom: 14px;
        }

        .article-content ul, .article-content ol {
            margin: 12px 0 16px;
            padding-left: 24px;
        }

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

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

        .article-content li {
            margin-bottom: 6px;
        }

        .article-content strong {
            color: var(--color-text);
            font-weight: 700;
        }

        .article-content a {
            color: var(--color-primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-thickness: 1px;
            text-decoration-color: var(--color-primary-lighter);
            transition: all var(--transition-fast);
        }

        .article-content a:hover {
            color: var(--color-primary-dark);
            text-decoration-color: var(--color-primary);
        }

        .article-content blockquote {
            border-left: 4px solid var(--color-primary-light);
            background: var(--color-primary-bg);
            padding: 16px 20px;
            margin: 20px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--color-text-secondary);
            font-style: italic;
        }

        .article-content img {
            border-radius: var(--radius);
            margin: 20px 0;
            box-shadow: var(--shadow-sm);
            max-width: 100%;
            height: auto;
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 0.95rem;
        }

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

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

        .article-content table tr:nth-child(even) td {
            background: var(--color-bg);
        }

        .article-content code {
            background: var(--color-bg-alt);
            padding: 2px 7px;
            border-radius: var(--radius-xs);
            font-size: 0.9em;
            color: var(--color-primary-dark);
            border: 1px solid var(--color-border-light);
        }

        .article-content pre {
            background: #1e293b;
            color: #e2e8f0;
            padding: 18px 20px;
            border-radius: var(--radius);
            overflow-x: auto;
            margin: 20px 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .article-content pre code {
            background: none;
            border: none;
            color: inherit;
            padding: 0;
        }

        /* ========== ARTICLE NOT FOUND ========== */
        .article-not-found {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 60px 40px;
            text-align: center;
            border: 1px solid var(--color-border-light);
        }

        .article-not-found .icon-wrap {
            width: 72px;
            height: 72px;
            background: var(--color-bg-alt);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 2rem;
            color: var(--color-text-lighter);
        }

        .article-not-found h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 10px;
        }

        .article-not-found p {
            color: var(--color-text-light);
            margin-bottom: 20px;
            max-width: 400px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 11px 24px;
            background: var(--color-primary);
            color: #fff;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
            box-shadow: 0 2px 8px rgba(26,86,219,0.3);
        }

        .btn-back-home:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 4px 14px rgba(26,86,219,0.4);
            transform: translateY(-1px);
            color: #fff;
        }

        /* ========== SIDEBAR ========== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: calc(var(--header-height) + 24px);
        }

        .sidebar-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
        }

        .sidebar-card__header {
            padding: 18px 20px;
            border-bottom: 1px solid var(--color-border-light);
            font-weight: 700;
            font-size: 1rem;
            color: var(--color-text);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card__header .icon-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-primary);
            flex-shrink: 0;
        }

        .sidebar-card__body {
            padding: 12px 16px;
        }

        .sidebar-post-item {
            display: flex;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
            align-items: flex-start;
        }

        .sidebar-post-item:last-child {
            border-bottom: none;
        }

        .sidebar-post-item:hover {
            background: var(--color-bg);
            margin: 0 -8px;
            padding-left: 8px;
            padding-right: 8px;
            border-radius: var(--radius-sm);
        }

        .sidebar-post-thumb {
            width: 72px;
            height: 52px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--color-bg-alt);
        }

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

        .sidebar-post-info .sp-title {
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--color-text);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 4px;
            transition: color var(--transition-fast);
        }

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

        .sidebar-post-info .sp-date {
            font-size: 0.75rem;
            color: var(--color-text-lighter);
        }

        .sidebar-cta-card {
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
            color: #fff;
            padding: 24px 20px;
            border-radius: var(--radius-lg);
            text-align: center;
        }

        .sidebar-cta-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .sidebar-cta-card p {
            font-size: 0.85rem;
            opacity: 0.85;
            margin-bottom: 16px;
            line-height: 1.5;
        }

        .btn-sidebar-cta {
            display: inline-block;
            padding: 10px 22px;
            background: #fff;
            color: var(--color-primary-dark);
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 12px rgba(0,0,0,0.2);
        }

        .btn-sidebar-cta:hover {
            background: #f0f7ff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0,0,0,0.25);
            color: var(--color-primary-dark);
        }

        /* ========== RELATED POSTS SECTION ========== */
        .related-section {
            padding: var(--section-gap) 0;
            background: var(--color-white);
            border-top: 1px solid var(--color-border-light);
            border-bottom: 1px solid var(--color-border-light);
        }

        .section-header {
            text-align: center;
            margin-bottom: 36px;
        }

        .section-header .section-label {
            display: inline-block;
            padding: 4px 14px;
            background: var(--color-primary-bg);
            color: var(--color-primary);
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 12px;
        }

        .section-header h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.01em;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 520px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
        }

        .related-card {
            background: var(--color-white);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--color-border-heavy);
        }

        .related-card__image {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
            background: var(--color-bg-alt);
        }

        .related-card__body {
            padding: 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-card__tag {
            font-size: 0.72rem;
            color: var(--color-primary);
            font-weight: 600;
            margin-bottom: 6px;
            letter-spacing: 0.02em;
        }

        .related-card__title {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-text);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .related-card__date {
            font-size: 0.78rem;
            color: var(--color-text-lighter);
        }

        /* ========== FAQ SECTION ========== */
        .faq-section {
            padding: var(--section-gap) 0;
            background: var(--color-bg);
        }

        .faq-grid {
            max-width: var(--max-width-article);
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

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

        .faq-question {
            width: 100%;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--color-text);
            text-align: left;
            transition: color var(--transition-fast);
            cursor: pointer;
            background: none;
            border: none;
        }

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

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1.1rem;
            color: var(--color-text-light);
            transition: all var(--transition-fast);
            font-weight: 700;
        }

        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        .faq-item.open .faq-icon {
            background: var(--color-primary-bg);
            color: var(--color-primary);
            transform: rotate(45deg);
        }

        .faq-item.open {
            border-color: var(--color-primary-lighter);
            box-shadow: var(--shadow-sm);
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            position: relative;
            padding: 70px 0;
            background: linear-gradient(135deg, #0f172a 0%, #1a3c6e 60%, #1a56db 100%);
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }

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

        .cta-section h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .cta-section p {
            color: rgba(255,255,255,0.8);
            font-size: 1.05rem;
            max-width: 550px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }

        .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: #fff;
            color: var(--color-primary-dark);
            border-radius: 28px;
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            box-shadow: 0 6px 20px rgba(0,0,0,0.25);
        }

        .btn-cta-large:hover {
            background: #f0f7ff;
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.3);
            color: var(--color-primary-dark);
        }

        .btn-cta-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.5);
            border-radius: 28px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            margin-left: 12px;
        }

        .btn-cta-outline:hover {
            background: rgba(255,255,255,0.1);
            border-color: #fff;
            color: #fff;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0f172a;
            color: rgba(255,255,255,0.7);
            padding: 48px 0 0;
            font-size: 0.9rem;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .footer-brand .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-brand .logo-icon {
            width: 36px;
            height: 36px;
            background: rgba(255,255,255,0.12);
            color: #fff;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
        }

        .footer-brand .logo-text {
            font-weight: 700;
            font-size: 1.1rem;
            color: #fff;
        }

        .footer-brand p {
            line-height: 1.7;
            font-size: 0.85rem;
            opacity: 0.7;
            max-width: 320px;
        }

        .footer-links h4 {
            color: #fff;
            font-weight: 600;
            margin-bottom: 12px;
            font-size: 0.95rem;
        }

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

        .footer-links a {
            color: rgba(255,255,255,0.6);
            transition: color var(--transition-fast);
            font-size: 0.875rem;
        }

        .footer-links a:hover {
            color: #fff;
        }

        .footer-bottom {
            text-align: center;
            padding: 20px 0;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.45);
            letter-spacing: 0.02em;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 16px;
            }
            .sidebar-card {
                flex: 1;
                min-width: 250px;
            }
            .sidebar-cta-card {
                flex: 1;
                min-width: 250px;
            }
            .header-search input {
                width: 100px;
            }
            .article-banner h1 {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 60px;
                --section-gap: 40px;
                --section-gap-sm: 28px;
            }
            .header-inner {
                gap: 12px;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--color-white);
                flex-direction: column;
                padding: 12px 16px;
                border-bottom: 2px solid var(--color-border);
                box-shadow: var(--shadow-md);
                gap: 2px;
                z-index: 999;
            }
            .main-nav.show {
                display: flex;
            }
            .main-nav a {
                width: 100%;
                padding: 10px 14px;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .header-search {
                display: none;
            }
            .btn-cta-header {
                font-size: 0.82rem;
                padding: 7px 14px;
            }
            .header-logo {
                font-size: 1rem;
            }
            .header-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.95rem;
            }
            .article-banner {
                padding: 40px 0 36px;
                min-height: 200px;
            }
            .article-banner h1 {
                font-size: 1.35rem;
            }
            .article-banner .banner-meta {
                font-size: 0.8rem;
                gap: 10px;
            }
            .sidebar {
                flex-direction: column;
            }
            .sidebar-card {
                min-width: auto;
            }
            .sidebar-cta-card {
                min-width: auto;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.95rem;
            }
            .btn-cta-outline {
                margin-left: 0;
                margin-top: 10px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .article-content {
                font-size: 0.98rem;
                line-height: 1.8;
            }
            .article-content h2 {
                font-size: 1.25rem;
            }
            .article-content h3 {
                font-size: 1.08rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .article-banner h1 {
                font-size: 1.2rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .btn-cta-large, .btn-cta-outline {
                width: 100%;
                justify-content: center;
                margin-left: 0;
            }
            .btn-cta-outline {
                margin-top: 10px;
            }
            .article-body {
                padding: 18px 14px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-answer {
                padding: 0 16px 14px;
            }
            .breadcrumb {
                font-size: 0.78rem;
            }
            .header-actions .btn-cta-header {
                padding: 6px 12px;
                font-size: 0.78rem;
            }
        }