/* roulang page: index */
:root {
            --primary: #1e3a5f;
            --primary-light: #3b82f6;
            --primary-dark: #0f2440;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --accent-dark: #d97706;
            --bg: #ffffff;
            --bg-alt: #f8fafc;
            --bg-dark: #0f172a;
            --text: #1e293b;
            --text-light: #64748b;
            --text-white: #ffffff;
            --border: #e2e8f0;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        input:focus,
        button:focus,
        a:focus {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header & Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
            transition: var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-dark);
            flex-shrink: 0;
        }

        .nav-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
        }

        .nav-logo span {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }

        .nav-links a {
            padding: 8px 18px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
            position: relative;
        }

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

        .nav-links a.active {
            color: var(--primary);
            background: rgba(59, 130, 246, 0.1);
            font-weight: 600;
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary-light);
            border-radius: 4px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-alt);
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 0 14px;
            height: 40px;
            transition: var(--transition);
        }

        .nav-search:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
        }

        .nav-search input {
            border: none;
            background: transparent;
            padding: 0 8px;
            height: 100%;
            width: 160px;
            font-size: 14px;
            color: var(--text);
            outline: none;
        }

        .nav-search input::placeholder {
            color: var(--text-light);
        }

        .nav-search button {
            background: none;
            border: none;
            color: var(--text-light);
            cursor: pointer;
            padding: 4px;
            font-size: 14px;
            transition: var(--transition);
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 24px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border: none;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(30, 58, 95, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(30, 58, 95, 0.4);
        }

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

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            border: none;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35);
        }

        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(245, 158, 11, 0.45);
        }

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

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text);
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: var(--transition);
        }

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

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            padding-top: 72px;
            background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #0f2440 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: 0.2;
            mix-blend-mode: overlay;
        }

        .hero-bg-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(245, 158, 11, 0.08) 0%, transparent 50%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .hero-text {
            padding: 40px 0;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 24px;
        }

        .hero-badge i {
            color: var(--accent-light);
        }

        .hero-title {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.15;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: -0.02em;
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, var(--accent-light), #f97316);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 18px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 32px;
            max-width: 520px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .hero-actions .btn-accent {
            padding: 14px 32px;
            font-size: 17px;
        }

        .hero-actions .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.3);
            border-radius: 10px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }

        .hero-actions .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        .hero-stats {
            display: flex;
            gap: 32px;
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .hero-stat-item {
            text-align: left;
        }

        .hero-stat-number {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }

        .hero-stat-number .accent {
            color: var(--accent-light);
        }

        .hero-stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
        }

        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .hero-card-mock {
            width: 100%;
            max-width: 480px;
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            padding: 32px;
            box-shadow: 0 30px 80px rgba(0, 0, 0, 0.3);
        }

        .hero-card-mock .mock-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
        }

        .hero-card-mock .mock-header .mock-dots {
            display: flex;
            gap: 6px;
        }

        .hero-card-mock .mock-header .mock-dots span {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.2);
        }

        .hero-card-mock .mock-header .mock-dots span:first-child {
            background: #ef4444;
        }
        .hero-card-mock .mock-header .mock-dots span:nth-child(2) {
            background: #f59e0b;
        }
        .hero-card-mock .mock-header .mock-dots span:last-child {
            background: #10b981;
        }

        .hero-card-mock .mock-header .mock-status {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-card-mock .mock-header .mock-status i {
            color: #10b981;
        }

        .hero-card-mock .mock-body {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .hero-card-mock .mock-field {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .hero-card-mock .mock-field label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            font-weight: 500;
        }

        .hero-card-mock .mock-field .mock-input {
            height: 44px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 10px;
            padding: 0 14px;
            color: #fff;
            font-size: 15px;
        }

        .hero-card-mock .mock-field .mock-input::placeholder {
            color: rgba(255, 255, 255, 0.3);
        }

        .hero-card-mock .mock-btn {
            height: 48px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            border: none;
            border-radius: 10px;
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            margin-top: 8px;
            transition: var(--transition);
        }

        .hero-card-mock .mock-btn:hover {
            transform: translateY(-1px);
            box-shadow: 0 8px 25px rgba(245, 158, 11, 0.3);
        }

        .hero-card-mock .mock-footer-text {
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            margin-top: 16px;
        }

        .hero-card-mock .mock-footer-text a {
            color: var(--accent-light);
            text-decoration: underline;
        }

        /* ===== Section Shared ===== */
        .section-padding {
            padding: 100px 0;
        }

        .section-padding-sm {
            padding: 60px 0;
        }

        .section-title {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--primary-dark);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .section-title .highlight {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .section-subtitle {
            font-size: 17px;
            color: var(--text-light);
            max-width: 600px;
            line-height: 1.7;
        }

        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

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

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

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

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

        .section-bg-dark {
            background: var(--bg-dark);
            color: #fff;
        }

        .section-bg-dark .section-title {
            color: #fff;
        }

        .section-bg-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== Features ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .feature-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: #fff;
            margin-bottom: 20px;
        }

        .feature-icon.blue {
            background: linear-gradient(135deg, #3b82f6, #1d4ed8);
        }
        .feature-icon.orange {
            background: linear-gradient(135deg, #f59e0b, #d97706);
        }
        .feature-icon.green {
            background: linear-gradient(135deg, #10b981, #059669);
        }
        .feature-icon.purple {
            background: linear-gradient(135deg, #8b5cf6, #6d28d9);
        }
        .feature-icon.rose {
            background: linear-gradient(135deg, #f43f5e, #e11d48);
        }
        .feature-icon.teal {
            background: linear-gradient(135deg, #14b8a6, #0d9488);
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--primary-dark);
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
        }

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

        .process-grid::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(to right, var(--primary-light), var(--accent));
            opacity: 0.3;
        }

        .process-step {
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .process-step-number {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            box-shadow: 0 8px 30px rgba(59, 130, 246, 0.25);
            transition: var(--transition);
        }

        .process-step:hover .process-step-number {
            transform: scale(1.05);
            box-shadow: 0 12px 40px rgba(59, 130, 246, 0.35);
        }

        .process-step h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--primary-dark);
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            max-width: 220px;
            margin: 0 auto;
        }

        /* ===== Stats / Advantages ===== */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .advantage-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
            backdrop-filter: blur(8px);
        }

        .advantage-card:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, 0.2);
        }

        .advantage-number {
            font-size: 42px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-light), #f97316);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .advantage-card h4 {
            font-size: 17px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 6px;
        }

        .advantage-card p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.6;
        }

        /* ===== News / CMS List ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .news-card {
            display: flex;
            gap: 20px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }

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

        .news-card-img {
            width: 140px;
            min-height: 100px;
            border-radius: 10px;
            background: var(--bg-alt);
            flex-shrink: 0;
            overflow: hidden;
            object-fit: cover;
        }

        .news-card-body {
            flex: 1;
            min-width: 0;
        }

        .news-card-body .news-tag {
            display: inline-block;
            padding: 2px 12px;
            background: rgba(59, 130, 246, 0.1);
            color: var(--primary);
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .news-card-body h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--primary-dark);
            margin-bottom: 6px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
        }

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

        .news-card-body .news-meta i {
            margin-right: 4px;
        }

        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 40px;
            color: var(--text-light);
            font-size: 16px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }

        /* ===== Category Entry ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .category-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 260px;
            display: flex;
            align-items: flex-end;
            transition: var(--transition);
            cursor: pointer;
        }

        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-xl);
        }

        .category-card-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            transition: var(--transition);
        }

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

        .category-card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 36, 64, 0.85) 0%, rgba(15, 36, 64, 0.2) 60%, transparent 100%);
        }

        .category-card-content {
            position: relative;
            z-index: 2;
            padding: 28px;
            width: 100%;
        }

        .category-card-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }

        .category-card-content p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 12px;
        }

        .category-card-content .category-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-light);
            transition: var(--transition);
        }

        .category-card-content .category-link:hover {
            gap: 10px;
            color: #fff;
        }

        /* ===== Security ===== */
        .security-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .security-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            min-height: 320px;
            background: var(--bg-alt);
        }

        .security-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .security-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .security-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }

        .security-item-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(16, 185, 129, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #10b981;
            flex-shrink: 0;
        }

        .security-item h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--primary-dark);
            margin-bottom: 4px;
        }

        .security-item p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(59, 130, 246, 0.2);
            box-shadow: var(--shadow);
        }

        .faq-question {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary-dark);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            gap: 16px;
            transition: var(--transition);
        }

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

        .faq-question .faq-toggle {
            font-size: 14px;
            color: var(--text-light);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.active .faq-toggle {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }

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

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 80px 0;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, #0f2440 100%);
            overflow: hidden;
        }

        .cta-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
            mix-blend-mode: overlay;
        }

        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 38px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.2;
        }

        .cta-content p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .cta-content .btn-accent {
            font-size: 18px;
            padding: 16px 40px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 32px;
        }

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

        .footer-brand .nav-logo {
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand .nav-logo span {
            background: linear-gradient(135deg, #fff, #93c5fd);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.5);
            max-width: 300px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 20px;
        }

        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 16px;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            transform: translateY(-2px);
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition);
        }

        .footer-col ul a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }

        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom a:hover {
            color: var(--accent-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: 40px;
                text-align: center;
            }

            .hero-text {
                padding: 20px 0;
            }

            .hero-desc {
                margin: 0 auto 32px;
            }

            .hero-actions {
                justify-content: center;
            }

            .hero-stats {
                justify-content: center;
            }

            .hero-visual {
                display: none;
            }

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

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 40px;
            }

            .process-grid::before {
                display: none;
            }

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

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

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

            .security-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

            .nav-search input {
                width: 120px;
            }
        }

        @media (max-width: 768px) {
            .section-padding {
                padding: 60px 0;
            }

            .section-title {
                font-size: 28px;
            }

            .hero-title {
                font-size: 34px;
            }

            .hero-stats {
                flex-wrap: wrap;
                gap: 20px;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                border-bottom: 1px solid var(--border);
                padding: 16px 24px;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                padding: 12px 16px;
                border-radius: 8px;
            }

            .nav-links a.active::after {
                display: none;
            }

            .mobile-toggle {
                display: block;
            }

            .nav-search {
                display: none;
            }

            .nav-actions .btn-primary {
                padding: 8px 16px;
                font-size: 13px;
            }

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

            .process-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

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

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

            .news-card {
                flex-direction: column;
            }

            .news-card-img {
                width: 100%;
                height: 160px;
            }

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .cta-content h2 {
                font-size: 28px;
            }

            .hero-card-mock {
                padding: 24px 20px;
            }

            .section-header-left {
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 28px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-actions .btn-accent,
            .hero-actions .btn-outline-light {
                text-align: center;
                justify-content: center;
            }

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

            .nav-container {
                padding: 0 16px;
            }

            .nav-logo {
                font-size: 18px;
            }

            .nav-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 14px;
            }

            .section-title {
                font-size: 24px;
            }

            .hero-stat-number {
                font-size: 22px;
            }
        }

        /* ===== Animation helpers ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg-alt);
        }

        ::-webkit-scrollbar-thumb {
            background: #cbd5e1;
            border-radius: 10px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: #94a3b8;
        }

/* roulang page: category1 */
:root {
            --primary: #4F46E5;
            --primary-dark: #4338CA;
            --primary-light: #818CF8;
            --secondary: #0EA5E9;
            --accent: #F59E0B;
            --bg-body: #ffffff;
            --bg-alt: #F8FAFC;
            --bg-dark: #0F172A;
            --text-primary: #1E293B;
            --text-secondary: #64748B;
            --text-light: #94A3B8;
            --border: #E2E8F0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            color: var(--text-primary);
            background: var(--bg-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        ul { list-style: none; padding: 0; margin: 0; }
        button { cursor: pointer; border: none; background: none; font: inherit; }
        input { font: inherit; outline: none; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .site-header {
            position: sticky; top: 0; z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(226,232,240,0.6);
            box-shadow: 0 1px 6px rgba(0,0,0,0.04);
        }
        .nav-container {
            max-width: 1200px; margin: 0 auto; padding: 0 24px;
            display: flex; align-items: center; justify-content: space-between;
            height: 68px; gap: 24px;
        }
        .nav-logo {
            display: flex; align-items: center; gap: 10px;
            font-weight: 700; font-size: 1.25rem; color: var(--text-primary);
            flex-shrink: 0;
        }
        .nav-logo .logo-icon {
            width: 36px; height: 36px; border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff; display: flex; align-items: center; justify-content: center;
            font-size: 1.1rem; font-weight: 800; letter-spacing: -0.02em;
            box-shadow: 0 4px 12px rgba(79,70,229,0.3);
        }
        .nav-logo span { letter-spacing: -0.01em; }
        .nav-links { display: flex; align-items: center; gap: 8px; }
        .nav-links li a {
            padding: 8px 18px; border-radius: 8px;
            font-size: 0.95rem; font-weight: 500; color: var(--text-secondary);
            transition: var(--transition); position: relative;
        }
        .nav-links li a:hover { color: var(--primary); background: rgba(79,70,229,0.06); }
        .nav-links li a.active {
            color: var(--primary); background: rgba(79,70,229,0.10);
            font-weight: 600;
        }
        .nav-links li a.active::after {
            content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
            width: 20px; height: 3px; border-radius: 2px;
            background: var(--primary);
        }
        .nav-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
        .nav-search {
            display: flex; align-items: center; gap: 4px;
            background: var(--bg-alt); border: 1px solid var(--border);
            border-radius: 10px; padding: 0 12px; transition: var(--transition);
        }
        .nav-search:focus-within { border-color: var(--primary-light); box-shadow: 0 0 0 3px rgba(79,70,229,0.10); }
        .nav-search input {
            width: 160px; height: 38px; border: none; background: transparent;
            font-size: 0.9rem; color: var(--text-primary);
        }
        .nav-search input::placeholder { color: var(--text-light); }
        .nav-search button { color: var(--text-light); padding: 0 4px; font-size: 0.95rem; }
        .nav-search button:hover { color: var(--primary); }
        .btn-primary {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 10px 24px; border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff; font-weight: 600; font-size: 0.9rem;
            box-shadow: 0 4px 14px rgba(79,70,229,0.35);
            transition: var(--transition); white-space: nowrap;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(79,70,229,0.40);
        }
        .btn-primary:active { transform: translateY(0); }
        .btn-secondary {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 10px 24px; border-radius: 10px;
            background: var(--bg-alt); border: 1px solid var(--border);
            color: var(--text-primary); font-weight: 500; font-size: 0.9rem;
            transition: var(--transition);
        }
        .btn-secondary:hover { background: var(--border); border-color: var(--text-light); }
        .mobile-toggle { display: none; font-size: 1.4rem; color: var(--text-primary); padding: 4px; }
        .site-footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.85);
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-brand .nav-logo { color: #fff; margin-bottom: 16px; }
        .footer-brand .nav-logo .logo-icon { background: linear-gradient(135deg, var(--primary-light), var(--secondary)); }
        .footer-brand p { color: rgba(255,255,255,0.6); font-size: 0.9rem; line-height: 1.7; max-width: 360px; }
        .footer-social { display: flex; gap: 14px; margin-top: 20px; }
        .footer-social a {
            width: 40px; height: 40px; border-radius: 50%;
            background: rgba(255,255,255,0.08); color: rgba(255,255,255,0.6);
            display: flex; align-items: center; justify-content: center;
            font-size: 1.1rem; transition: var(--transition);
        }
        .footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }
        .footer-col h4 { color: #fff; font-size: 1rem; font-weight: 600; margin-bottom: 18px; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: rgba(255,255,255,0.55); font-size: 0.9rem; transition: var(--transition); display: inline-flex; align-items: center; gap: 8px; }
        .footer-col ul li a:hover { color: var(--primary-light); padding-left: 4px; }
        .footer-bottom {
            display: flex; justify-content: space-between; align-items: center;
            padding: 24px 0; font-size: 0.85rem; color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--primary-light); }
        .page-banner {
            position: relative; padding: 100px 0 80px;
            background: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #0F172A 100%);
            overflow: hidden;
        }
        .page-banner::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.15; mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: ''; position: absolute; bottom: 0; left: 0; right: 0;
            height: 120px; background: linear-gradient(to top, var(--bg-body), transparent);
        }
        .page-banner .container { position: relative; z-index: 2; }
        .page-banner h1 { font-size: 3rem; font-weight: 800; color: #fff; line-height: 1.2; margin-bottom: 16px; letter-spacing: -0.02em; }
        .page-banner p { font-size: 1.15rem; color: rgba(255,255,255,0.65); max-width: 640px; line-height: 1.8; }
        .page-banner .breadcrumb { display: flex; gap: 8px; align-items: center; font-size: 0.9rem; color: rgba(255,255,255,0.4); margin-bottom: 24px; }
        .page-banner .breadcrumb a { color: rgba(255,255,255,0.55); }
        .page-banner .breadcrumb a:hover { color: var(--primary-light); }
        .page-banner .breadcrumb span { color: rgba(255,255,255,0.7); }
        .section { padding: 80px 0; }
        .section-alt { background: var(--bg-alt); }
        .section-title { font-size: 2.2rem; font-weight: 800; text-align: center; margin-bottom: 12px; letter-spacing: -0.01em; color: var(--text-primary); }
        .section-subtitle { text-align: center; color: var(--text-secondary); font-size: 1.05rem; max-width: 640px; margin: 0 auto 48px; line-height: 1.7; }
        .card {
            background: #fff; border-radius: var(--radius);
            box-shadow: var(--shadow-sm); border: 1px solid var(--border);
            padding: 32px; transition: var(--transition);
        }
        .card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .card-icon {
            width: 56px; height: 56px; border-radius: 14px;
            display: flex; align-items: center; justify-content: center;
            font-size: 1.6rem; margin-bottom: 18px;
        }
        .step-card { display: flex; gap: 24px; align-items: flex-start; padding: 28px 32px; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow-sm); border: 1px solid var(--border); transition: var(--transition); }
        .step-card:hover { box-shadow: var(--shadow-md); transform: translateX(6px); }
        .step-number {
            width: 44px; height: 44px; border-radius: 12px; flex-shrink: 0;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff; display: flex; align-items: center; justify-content: center;
            font-weight: 700; font-size: 1.15rem;
        }
        .step-content h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: 6px; }
        .step-content p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; }
        .faq-item {
            border: 1px solid var(--border); border-radius: var(--radius-sm);
            margin-bottom: 12px; overflow: hidden; transition: var(--transition);
            background: #fff;
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question {
            padding: 20px 24px; display: flex; justify-content: space-between; align-items: center;
            font-weight: 600; font-size: 1rem; cursor: pointer;
            background: #fff; transition: var(--transition);
        }
        .faq-question:hover { background: var(--bg-alt); }
        .faq-question i { color: var(--text-light); transition: var(--transition); font-size: 0.9rem; }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--primary); }
        .faq-answer {
            max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px; color: var(--text-secondary); font-size: 0.95rem; line-height: 1.8;
            background: var(--bg-alt);
        }
        .faq-item.open .faq-answer { max-height: 300px; padding: 20px 24px; }
        .tag {
            display: inline-block; padding: 4px 14px; border-radius: 20px;
            font-size: 0.75rem; font-weight: 500; background: rgba(79,70,229,0.08);
            color: var(--primary); border: 1px solid rgba(79,70,229,0.15);
        }
        .tag-green { background: rgba(16,185,129,0.08); color: #059669; border-color: rgba(16,185,129,0.15); }
        .tag-orange { background: rgba(245,158,11,0.08); color: #D97706; border-color: rgba(245,158,11,0.15); }
        .tag-blue { background: rgba(14,165,233,0.08); color: #0284C7; border-color: rgba(14,165,233,0.15); }
        .grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
        .grid-2 { display: grid; grid-template-columns: repeat(2,1fr); gap: 28px; }
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 80px 0; position: relative; overflow: hidden;
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.08; mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; text-align: center; }
        .cta-section h2 { font-size: 2.4rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
        .cta-section p { color: rgba(255,255,255,0.75); font-size: 1.1rem; max-width: 560px; margin: 0 auto 32px; }
        .cta-section .btn-primary { background: #fff; color: var(--primary); box-shadow: 0 8px 30px rgba(0,0,0,0.2); }
        .cta-section .btn-primary:hover { background: var(--bg-alt); transform: translateY(-3px); box-shadow: 0 12px 40px rgba(0,0,0,0.25); }
        .cta-section .btn-secondary { background: rgba(255,255,255,0.12); border-color: rgba(255,255,255,0.2); color: #fff; }
        .cta-section .btn-secondary:hover { background: rgba(255,255,255,0.2); }
        .stat-item { text-align: center; padding: 24px; }
        .stat-number { font-size: 2.8rem; font-weight: 800; color: var(--primary); line-height: 1.2; }
        .stat-label { color: var(--text-secondary); font-size: 0.95rem; margin-top: 4px; }
        .safety-card { display: flex; gap: 20px; align-items: flex-start; padding: 28px; background: #fff; border-radius: var(--radius); border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: var(--transition); }
        .safety-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .safety-icon { width: 48px; height: 48px; border-radius: 12px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; font-size: 1.4rem; }
        .safety-content h4 { font-weight: 600; font-size: 1.05rem; margin-bottom: 4px; }
        .safety-content p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.7; }
        .login-method-card { text-align: center; padding: 36px 24px; background: #fff; border-radius: var(--radius); border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: var(--transition); }
        .login-method-card:hover { box-shadow: var(--shadow-md); transform: translateY(-6px); }
        .login-method-card .icon-wrap { width: 64px; height: 64px; border-radius: 18px; margin: 0 auto 18px; display: flex; align-items: center; justify-content: center; font-size: 1.8rem; }
        .login-method-card h3 { font-weight: 600; font-size: 1.1rem; margin-bottom: 8px; }
        .login-method-card p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.7; }
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .grid-3 { grid-template-columns: repeat(2,1fr); }
        }
        @media (max-width: 768px) {
            .nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-md); flex-direction: column; padding: 16px 24px; gap: 4px; }
            .nav-links.open { display: flex; }
            .nav-links li a { padding: 12px 16px; width: 100%; }
            .nav-links li a.active::after { display: none; }
            .nav-search { display: none; }
            .mobile-toggle { display: block; }
            .nav-actions .btn-primary { display: none; }
            .page-banner { padding: 60px 0 50px; }
            .page-banner h1 { font-size: 2rem; }
            .page-banner p { font-size: 1rem; }
            .section { padding: 50px 0; }
            .section-title { font-size: 1.8rem; }
            .grid-3, .grid-2 { grid-template-columns: 1fr; gap: 20px; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
            .step-card { flex-direction: column; align-items: flex-start; padding: 24px; }
            .step-number { width: 40px; height: 40px; font-size: 1rem; }
            .safety-card { flex-direction: column; }
            .stat-number { font-size: 2.2rem; }
            .cta-section h2 { font-size: 1.8rem; }
            .login-method-card { padding: 28px 20px; }
        }
        @media (max-width: 520px) {
            .nav-container { padding: 0 16px; height: 60px; }
            .nav-logo { font-size: 1.1rem; }
            .nav-logo .logo-icon { width: 32px; height: 32px; font-size: 0.95rem; }
            .page-banner h1 { font-size: 1.6rem; }
            .page-banner .breadcrumb { font-size: 0.8rem; flex-wrap: wrap; }
            .section-title { font-size: 1.5rem; }
            .card { padding: 24px; }
            .faq-question { padding: 16px 18px; font-size: 0.9rem; }
            .faq-answer { font-size: 0.85rem; }
            .container { padding: 0 16px; }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #b91c1c;
            --primary-light: #ef4444;
            --primary-dark: #991b1b;
            --primary-bg: #fef2f2;
            --secondary: #1e293b;
            --secondary-light: #334155;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg: #ffffff;
            --bg-alt: #f8fafc;
            --bg-dark: #0f172a;
            --text: #0f172a;
            --text-light: #475569;
            --text-muted: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 40px rgba(0,0,0,0.08);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.10);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

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

        /* ===== 容器 ===== */
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        @media (max-width: 768px) { .container { padding: 0 16px; } }
        @media (max-width: 480px) { .container { padding: 0 12px; } }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky; top: 0; z-index: 1000;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(0,0,0,0.02);
        }
        .nav-container {
            max-width: 1200px; margin: 0 auto; padding: 0 24px;
            display: flex; align-items: center; justify-content: space-between;
            height: 64px; gap: 24px;
        }
        .nav-logo {
            display: flex; align-items: center; gap: 10px;
            font-weight: 700; font-size: 1.2rem; color: var(--text); white-space: nowrap;
            transition: var(--transition);
        }
        .nav-logo:hover { color: var(--primary); }
        .logo-icon {
            width: 36px; height: 36px; border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff; display: flex; align-items: center; justify-content: center;
            font-weight: 800; font-size: 1rem; letter-spacing: -0.5px;
            box-shadow: 0 2px 8px rgba(185,28,28,0.3);
        }
        .nav-links { display: flex; align-items: center; gap: 4px; list-style: none; }
        .nav-links li a {
            display: inline-block; padding: 8px 18px; border-radius: var(--radius-sm);
            font-size: 0.92rem; font-weight: 500; color: var(--text-light);
            transition: var(--transition); position: relative;
        }
        .nav-links li a:hover { color: var(--primary); background: var(--primary-bg); }
        .nav-links li a.active {
            color: var(--primary); background: var(--primary-bg);
            font-weight: 600;
        }
        .nav-links li a.active::after {
            content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%);
            width: 20px; height: 3px; border-radius: 2px; background: var(--primary);
        }
        .nav-actions { display: flex; align-items: center; gap: 12px; }
        .nav-search {
            display: flex; align-items: center; background: var(--bg-alt);
            border: 1px solid var(--border); border-radius: 40px;
            padding: 0 6px 0 16px; transition: var(--transition);
        }
        .nav-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(185,28,28,0.1); }
        .nav-search input {
            border: none; background: transparent; padding: 8px 0; font-size: 0.85rem;
            outline: none; width: 140px; color: var(--text);
        }
        .nav-search input::placeholder { color: var(--text-muted); }
        .nav-search button {
            background: transparent; border: none; padding: 8px 12px;
            color: var(--text-muted); font-size: 0.9rem; border-radius: 40px;
            transition: var(--transition);
        }
        .nav-search button:hover { color: var(--primary); }
        .btn-primary {
            display: inline-flex; align-items: center; gap: 8px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff !important; padding: 10px 22px; border-radius: 40px;
            font-weight: 600; font-size: 0.9rem; border: none;
            box-shadow: 0 4px 14px rgba(185,28,28,0.3);
            transition: var(--transition); white-space: nowrap;
        }
        .btn-primary:hover {
            transform: translateY(-2px); box-shadow: 0 8px 24px rgba(185,28,28,0.35);
            color: #fff !important;
        }
        .btn-primary:active { transform: translateY(0); }
        .btn-outline {
            display: inline-flex; align-items: center; gap: 8px;
            border: 2px solid var(--primary); color: var(--primary);
            padding: 8px 20px; border-radius: 40px; font-weight: 600; font-size: 0.9rem;
            background: transparent; transition: var(--transition);
        }
        .btn-outline:hover { background: var(--primary); color: #fff !important; }
        .mobile-toggle { display: none; background: none; border: none; font-size: 1.4rem; color: var(--text); padding: 4px; }

        @media (max-width: 868px) {
            .nav-links { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); padding: 16px 24px; box-shadow: var(--shadow); }
            .nav-links.open { display: flex; }
            .nav-links li a { padding: 12px 16px; width: 100%; }
            .nav-links li a.active::after { display: none; }
            .nav-search { display: none; }
            .mobile-toggle { display: block; }
            .nav-container { padding: 0 16px; }
            .btn-primary { padding: 8px 16px; font-size: 0.82rem; gap: 4px; }
        }
        @media (max-width: 480px) {
            .nav-logo span { font-size: 1rem; }
            .btn-primary span { display: none; }
        }

        /* ===== 页面横幅 ===== */
        .page-banner {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1e293b 100%);
            padding: 60px 0 50px; position: relative; overflow: hidden;
        }
        .page-banner::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.08; pointer-events: none;
        }
        .page-banner .container { position: relative; z-index: 1; }
        .breadcrumb {
            display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
            font-size: 0.85rem; color: var(--text-muted); margin-bottom: 16px;
        }
        .breadcrumb a { color: var(--text-muted); }
        .breadcrumb a:hover { color: var(--accent-light); }
        .breadcrumb .sep { color: var(--text-muted); opacity: 0.5; }
        .breadcrumb .current { color: var(--accent-light); font-weight: 500; }
        .page-banner h1 {
            font-size: 2.2rem; font-weight: 800; color: #fff;
            line-height: 1.25; max-width: 800px; letter-spacing: -0.5px;
        }
        .page-banner .meta-row {
            display: flex; flex-wrap: wrap; gap: 20px; margin-top: 16px;
            color: rgba(255,255,255,0.7); font-size: 0.9rem;
        }
        .page-banner .meta-row span { display: inline-flex; align-items: center; gap: 6px; }
        .page-banner .meta-row .badge {
            display: inline-block; padding: 4px 14px; border-radius: 40px;
            background: var(--primary); color: #fff; font-size: 0.78rem; font-weight: 600;
        }
        @media (max-width: 768px) {
            .page-banner { padding: 40px 0 32px; }
            .page-banner h1 { font-size: 1.6rem; }
            .page-banner .meta-row { gap: 12px; font-size: 0.82rem; }
        }
        @media (max-width: 480px) {
            .page-banner h1 { font-size: 1.3rem; }
        }

        /* ===== 文章主内容 ===== */
        .article-main { padding: 48px 0 60px; background: var(--bg); }
        .article-layout {
            display: grid; grid-template-columns: 1fr 300px; gap: 48px;
        }
        .article-content { min-width: 0; }
        .article-content .featured-img {
            width: 100%; border-radius: var(--radius); margin-bottom: 32px;
            box-shadow: var(--shadow); aspect-ratio: 16/9; object-fit: cover;
        }
        .article-body {
            font-size: 1.05rem; line-height: 1.85; color: var(--text);
        }
        .article-body h2 { font-size: 1.5rem; font-weight: 700; margin: 32px 0 16px; color: var(--text); }
        .article-body h3 { font-size: 1.2rem; font-weight: 600; margin: 24px 0 12px; color: var(--text); }
        .article-body p { margin-bottom: 18px; }
        .article-body ul, .article-body ol { margin: 16px 0 20px; padding-left: 24px; }
        .article-body li { margin-bottom: 8px; }
        .article-body img { border-radius: var(--radius-sm); margin: 24px 0; box-shadow: var(--shadow); }
        .article-body blockquote {
            border-left: 4px solid var(--primary); background: var(--primary-bg);
            padding: 16px 24px; margin: 24px 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light); font-style: italic;
        }
        .article-body a { color: var(--primary); font-weight: 500; text-decoration: underline; }
        .article-body a:hover { color: var(--primary-dark); }

        /* ===== 侧边栏 ===== */
        .article-sidebar { position: sticky; top: 88px; align-self: start; }
        .sidebar-card {
            background: var(--bg-alt); border-radius: var(--radius);
            border: 1px solid var(--border); padding: 24px; margin-bottom: 24px;
        }
        .sidebar-card h3 {
            font-size: 1rem; font-weight: 700; margin-bottom: 16px;
            display: flex; align-items: center; gap: 8px; color: var(--text);
        }
        .sidebar-card h3 i { color: var(--primary); }
        .sidebar-list { list-style: none; }
        .sidebar-list li { margin-bottom: 10px; }
        .sidebar-list li a {
            display: flex; align-items: flex-start; gap: 10px;
            font-size: 0.9rem; color: var(--text-light); line-height: 1.4;
            padding: 6px 0; transition: var(--transition);
        }
        .sidebar-list li a:hover { color: var(--primary); transform: translateX(4px); }
        .sidebar-list li a .num {
            display: inline-flex; align-items: center; justify-content: center;
            width: 22px; height: 22px; border-radius: 50%;
            background: var(--border); color: var(--text-muted);
            font-size: 0.75rem; font-weight: 600; flex-shrink: 0; margin-top: 2px;
        }
        .sidebar-list li a:hover .num { background: var(--primary); color: #fff; }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius); padding: 28px 24px; text-align: center;
            color: #fff; border: none;
        }
        .sidebar-cta h4 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
        .sidebar-cta p { font-size: 0.9rem; opacity: 0.9; margin-bottom: 16px; }
        .sidebar-cta .btn-white {
            display: inline-block; background: #fff; color: var(--primary) !important;
            padding: 10px 28px; border-radius: 40px; font-weight: 600; font-size: 0.9rem;
            transition: var(--transition);
        }
        .sidebar-cta .btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,0.15); }

        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; gap: 32px; }
            .article-sidebar { position: static; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
        }
        @media (max-width: 640px) {
            .article-sidebar { grid-template-columns: 1fr; }
            .article-main { padding: 32px 0 40px; }
            .article-body { font-size: 0.98rem; }
        }

        /* ===== 标签 ===== */
        .tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--border); }
        .tag-list .tag {
            display: inline-block; padding: 4px 14px; border-radius: 40px;
            background: var(--bg-alt); color: var(--text-light); font-size: 0.82rem;
            border: 1px solid var(--border); transition: var(--transition);
        }
        .tag-list .tag:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-bg); }

        /* ===== 相关推荐 ===== */
        .related-section { background: var(--bg-alt); padding: 56px 0; }
        .related-section .section-title {
            font-size: 1.5rem; font-weight: 700; margin-bottom: 32px;
            display: flex; align-items: center; gap: 10px;
        }
        .related-section .section-title i { color: var(--primary); }
        .related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .related-card {
            background: #fff; border-radius: var(--radius);
            border: 1px solid var(--border); overflow: hidden;
            transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
        .related-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; border-radius: 0; }
        .related-card .card-body { padding: 16px 18px 18px; }
        .related-card .card-body .cat {
            font-size: 0.75rem; font-weight: 600; color: var(--primary);
            text-transform: uppercase; letter-spacing: 0.5px;
        }
        .related-card .card-body h4 { font-size: 0.95rem; font-weight: 600; margin: 4px 0 8px; line-height: 1.4; color: var(--text); }
        .related-card .card-body h4 a { color: var(--text); }
        .related-card .card-body h4 a:hover { color: var(--primary); }
        .related-card .card-body .date { font-size: 0.8rem; color: var(--text-muted); }
        @media (max-width: 1024px) { .related-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 520px) { .related-grid { grid-template-columns: 1fr; } }

        /* ===== CTA 区域 ===== */
        .cta-section {
            padding: 72px 0; position: relative; overflow: hidden;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1e293b 100%);
        }
        .cta-section::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.06; pointer-events: none;
        }
        .cta-section .container { position: relative; z-index: 1; text-align: center; }
        .cta-section h2 { font-size: 2rem; font-weight: 800; color: #fff; margin-bottom: 12px; }
        .cta-section p { font-size: 1.05rem; color: rgba(255,255,255,0.7); max-width: 600px; margin: 0 auto 28px; }
        .cta-section .btns { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
        .cta-section .btn-cta-primary {
            display: inline-flex; align-items: center; gap: 8px;
            background: var(--primary); color: #fff !important; padding: 14px 32px;
            border-radius: 40px; font-weight: 600; font-size: 1rem; border: none;
            box-shadow: 0 6px 20px rgba(185,28,28,0.35);
            transition: var(--transition);
        }
        .cta-section .btn-cta-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 32px rgba(185,28,28,0.4); }
        .cta-section .btn-cta-secondary {
            display: inline-flex; align-items: center; gap: 8px;
            border: 2px solid rgba(255,255,255,0.3); color: #fff !important;
            padding: 12px 30px; border-radius: 40px; font-weight: 600; font-size: 1rem;
            background: transparent; transition: var(--transition);
        }
        .cta-section .btn-cta-secondary:hover { border-color: #fff; background: rgba(255,255,255,0.08); }
        @media (max-width: 768px) {
            .cta-section { padding: 48px 0; }
            .cta-section h2 { font-size: 1.5rem; }
            .cta-section p { font-size: 0.95rem; }
        }

        /* ===== 404 状态 ===== */
        .not-found-block {
            text-align: center; padding: 80px 20px; min-height: 50vh;
            display: flex; flex-direction: column; align-items: center; justify-content: center;
        }
        .not-found-block .icon { font-size: 4rem; color: var(--text-muted); margin-bottom: 20px; }
        .not-found-block h2 { font-size: 2rem; font-weight: 700; color: var(--text); margin-bottom: 12px; }
        .not-found-block p { color: var(--text-light); font-size: 1.05rem; margin-bottom: 24px; }
        .not-found-block .btn-home {
            display: inline-flex; align-items: center; gap: 8px;
            background: var(--primary); color: #fff !important; padding: 12px 28px;
            border-radius: 40px; font-weight: 600; transition: var(--transition);
        }
        .not-found-block .btn-home:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.7); padding: 56px 0 0;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.06); }
        .footer-brand .nav-logo { color: #fff; margin-bottom: 16px; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; max-width: 360px; }
        .footer-social { display: flex; gap: 12px; margin-top: 20px; }
        .footer-social a {
            display: inline-flex; align-items: center; justify-content: center;
            width: 36px; height: 36px; border-radius: 50%;
            background: rgba(255,255,255,0.06); color: rgba(255,255,255,0.6);
            transition: var(--transition); font-size: 1rem;
        }
        .footer-social a:hover { background: var(--primary); color: #fff; }
        .footer-col h4 { font-size: 0.95rem; font-weight: 600; color: #fff; margin-bottom: 16px; }
        .footer-col ul { list-style: none; }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a { color: rgba(255,255,255,0.6); font-size: 0.88rem; transition: var(--transition); display: inline-flex; align-items: center; gap: 6px; }
        .footer-col ul li a:hover { color: #fff; transform: translateX(4px); }
        .footer-bottom {
            display: flex; justify-content: space-between; align-items: center;
            padding: 20px 0; flex-wrap: wrap; gap: 8px;
            font-size: 0.82rem; color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: #fff; }
        @media (max-width: 868px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
        @media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; gap: 24px; } .footer-bottom { flex-direction: column; text-align: center; } }

        /* ===== 辅助 ===== */
        .mb-0 { margin-bottom: 0; }
        .gap-8 { gap: 8px; }
        .gap-12 { gap: 12px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .text-center { text-align: center; }
        .w-full { width: 100%; }
        .relative { position: relative; }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--bg-alt); }
        ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

        /* ===== 移动端菜单动画 ===== */
        @keyframes slideDown { from { opacity: 0; transform: translateY(-12px); } to { opacity: 1; transform: translateY(0); } }
        .nav-links.open { animation: slideDown 0.3s ease forwards; }