/* roulang page: index */
:root {
            --color-primary: #1e40af;
            --color-primary-light: #2563eb;
            --color-primary-dark: #1a3590;
            --color-accent: #f59e0b;
            --color-accent-light: #fbbf24;
            --color-accent-dark: #d97706;
            --color-bg: #ffffff;
            --color-bg-alt: #f8fafc;
            --color-bg-dark: #0f172a;
            --color-bg-card: #ffffff;
            --color-text: #1e293b;
            --color-text-weak: #64748b;
            --color-text-light: #94a3b8;
            --color-text-on-dark: #f1f5f9;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-success: #10b981;
            --color-danger: #ef4444;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --radius-full: 9999px;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04), 0 6px 20px rgba(0, 0, 0, 0.06);
            --shadow-card-hover: 0 4px 16px rgba(0, 0, 0, 0.06), 0 12px 36px rgba(0, 0, 0, 0.10);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-height: 68px;
            --section-gap: 80px;
            --section-gap-sm: 48px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
            background: none;
            font-size: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-primary-light);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        ul,
        ol {
            list-style: none;
        }

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

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-normal);
        }
        .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 24px;
            height: 100%;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 1.15rem;
            letter-spacing: 1px;
            flex-shrink: 0;
        }
        .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary-dark);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .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);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--color-primary-light);
            background: rgba(30, 64, 175, 0.04);
        }
        .main-nav a.active {
            color: var(--color-primary);
            background: rgba(30, 64, 175, 0.08);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--color-primary);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            background: var(--color-primary);
            color: #fff !important;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }
        .nav-cta:hover {
            background: var(--color-primary-light);
            box-shadow: 0 4px 14px rgba(30, 64, 175, 0.3);
            transform: translateY(-1px);
        }
        .nav-cta:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .mobile-menu-btn {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--color-text);
            transition: background var(--transition-fast);
            flex-shrink: 0;
        }
        .mobile-menu-btn:hover {
            background: rgba(0, 0, 0, 0.04);
        }
        .mobile-menu-btn .icon-close {
            display: none;
        }
        .mobile-menu-btn.open .icon-menu {
            display: none;
        }
        .mobile-menu-btn.open .icon-close {
            display: inline;
        }

        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15, 23, 42, 0.5);
            z-index: 999;
            opacity: 0;
            transition: opacity var(--transition-normal);
            pointer-events: none;
        }
        .mobile-nav-overlay.open {
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: var(--header-height);
            right: 0;
            width: 300px;
            max-width: 85vw;
            bottom: 0;
            background: #fff;
            z-index: 1001;
            padding: 20px;
            flex-direction: column;
            gap: 8px;
            box-shadow: var(--shadow-xl);
            transform: translateX(100%);
            transition: transform var(--transition-normal);
            overflow-y: auto;
        }
        .mobile-nav-panel.open {
            transform: translateX(0);
        }
        .mobile-nav-panel a {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            font-weight: 500;
            font-size: 1rem;
            color: var(--color-text);
            transition: all var(--transition-fast);
        }
        .mobile-nav-panel a:hover {
            background: rgba(30, 64, 175, 0.04);
            color: var(--color-primary);
        }
        .mobile-nav-panel a.active {
            background: rgba(30, 64, 175, 0.08);
            color: var(--color-primary);
            font-weight: 600;
        }
        .mobile-nav-panel .mobile-cta {
            display: block;
            text-align: center;
            padding: 12px 20px;
            background: var(--color-primary);
            color: #fff !important;
            border-radius: var(--radius-full);
            font-weight: 600;
            margin-top: 8px;
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            padding: 80px 0 100px;
            background: linear-gradient(160deg, #f0f4ff 0%, #e8f0fe 30%, #f8fafc 60%, #fefce8 100%);
            overflow: hidden;
            min-height: 560px;
            display: flex;
            align-items: center;
        }
        .hero-bg-img {
            position: absolute;
            right: -60px;
            top: 50%;
            transform: translateY(-50%);
            width: 520px;
            height: 420px;
            border-radius: var(--radius-xl);
            object-fit: cover;
            opacity: 0.35;
            pointer-events: none;
            mask-image: linear-gradient(to left, rgba(0, 0, 0, 0.7) 30%, rgba(0, 0, 0, 0) 100%);
            -webkit-mask-image: linear-gradient(to left, rgba(0, 0, 0, 0.7) 30%, rgba(0, 0, 0, 0) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 640px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(30, 64, 175, 0.08);
            color: var(--color-primary);
            padding: 6px 14px;
            border-radius: var(--radius-full);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }
        .hero-badge .dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--color-accent);
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.4;
                transform: scale(1.6);
            }
        }
        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--color-text);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .hero-title .hl {
            color: var(--color-primary);
            position: relative;
        }
        .hero-title .hl-accent {
            color: var(--color-accent-dark);
        }
        .hero-desc {
            font-size: 1.15rem;
            color: var(--color-text-weak);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.3px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            cursor: pointer;
            text-align: center;
            justify-content: center;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(30, 64, 175, 0.25);
        }
        .btn-primary:hover {
            background: var(--color-primary-light);
            box-shadow: 0 6px 22px rgba(30, 64, 175, 0.35);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(30, 64, 175, 0.2);
        }
        .btn-outline {
            background: #fff;
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
        }
        .btn-outline:hover {
            background: rgba(30, 64, 175, 0.04);
            border-color: var(--color-primary-light);
            color: var(--color-primary-light);
            transform: translateY(-1px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-accent {
            background: var(--color-accent);
            color: #1e293b;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
            font-weight: 700;
        }
        .btn-accent:hover {
            background: var(--color-accent-light);
            box-shadow: 0 6px 22px rgba(245, 158, 11, 0.4);
            transform: translateY(-2px);
        }

        /* Section Common */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-sm {
            padding: var(--section-gap-sm) 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        .section-dark {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-primary);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 8px;
        }
        .section-header .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: inherit;
            margin-bottom: 10px;
            letter-spacing: -0.3px;
        }
        .section-header .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-weak);
            max-width: 580px;
            margin: 0 auto;
        }
        .section-dark .section-title {
            color: #fff;
        }
        .section-dark .section-subtitle {
            color: var(--color-text-light);
        }
        .section-dark .section-label {
            color: var(--color-accent-light);
        }

        /* Stats Section */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            border: 1px solid var(--color-border-light);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }
        .stat-icon {
            font-size: 2rem;
            margin-bottom: 10px;
            display: block;
        }
        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.2;
            letter-spacing: -1px;
        }
        .stat-number .unit {
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-text-weak);
            margin-left: 2px;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            margin-top: 4px;
            font-weight: 500;
        }

        /* Card Grid */
        .card-grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .card-grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .card-grid-5 {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 18px;
        }

        .info-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            border: 1px solid var(--color-border-light);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .info-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--color-border);
        }
        .info-card .card-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            flex-shrink: 0;
        }
        .info-card .card-icon.blue {
            background: rgba(30, 64, 175, 0.1);
            color: var(--color-primary);
        }
        .info-card .card-icon.amber {
            background: rgba(245, 158, 11, 0.12);
            color: var(--color-accent-dark);
        }
        .info-card .card-icon.green {
            background: rgba(16, 185, 129, 0.1);
            color: var(--color-success);
        }
        .info-card .card-icon.red {
            background: rgba(239, 68, 68, 0.08);
            color: var(--color-danger);
        }
        .info-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
        }
        .info-card p {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            line-height: 1.65;
            flex-grow: 1;
        }

        /* Category Cards */
        .category-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            border: 1px solid var(--color-border-light);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-5px);
            border-color: var(--color-border);
        }
        .category-card .card-img-wrap {
            position: relative;
            height: 180px;
            overflow: hidden;
            background: #e8ecf2;
        }
        .category-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .category-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .category-card .card-img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, 0.55) 0%, rgba(15, 23, 42, 0) 50%);
        }
        .category-card .card-body {
            padding: 20px 18px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .category-card .card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-full);
            background: rgba(30, 64, 175, 0.07);
            color: var(--color-primary);
            width: fit-content;
            letter-spacing: 0.5px;
        }
        .category-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text);
        }
        .category-card p {
            font-size: 0.85rem;
            color: var(--color-text-weak);
            line-height: 1.55;
            flex-grow: 1;
        }
        .category-card .card-link {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-fast);
        }
        .category-card .card-link:hover {
            gap: 8px;
            color: var(--color-primary-light);
        }

        /* Brand Story */
        .brand-story-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .brand-story-img {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .brand-story-img img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }
        .brand-story-text h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--color-text);
            letter-spacing: -0.3px;
        }
        .brand-story-text p {
            font-size: 0.98rem;
            color: var(--color-text-weak);
            line-height: 1.85;
            margin-bottom: 12px;
        }
        .brand-story-text .highlight-box {
            background: rgba(30, 64, 175, 0.04);
            border-left: 4px solid var(--color-primary);
            padding: 14px 18px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin-top: 16px;
            font-weight: 500;
            color: var(--color-primary-dark);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* News List */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .news-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-normal);
            border: 1px solid var(--color-border-light);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }
        .news-card .news-img {
            height: 180px;
            overflow: hidden;
            background: #e8ecf2;
        }
        .news-card .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .news-card:hover .news-img img {
            transform: scale(1.05);
        }
        .news-card .news-body {
            padding: 18px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .news-card .news-date {
            font-size: 0.78rem;
            color: var(--color-text-light);
            font-weight: 500;
        }
        .news-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.45;
        }
        .news-card p {
            font-size: 0.85rem;
            color: var(--color-text-weak);
            line-height: 1.55;
            flex-grow: 1;
        }
        .news-card .read-more {
            font-weight: 600;
            font-size: 0.88rem;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-fast);
            margin-top: auto;
        }
        .news-card .read-more:hover {
            gap: 8px;
            color: var(--color-primary-light);
        }

        /* Testimonials */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .testimonial-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            backdrop-filter: blur(6px);
            transition: all var(--transition-normal);
        }
        .testimonial-card:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }
        .testimonial-card .quote-icon {
            font-size: 2rem;
            color: var(--color-accent-light);
            margin-bottom: 10px;
            opacity: 0.7;
        }
        .testimonial-card p {
            font-size: 0.93rem;
            line-height: 1.7;
            color: var(--color-text-on-dark);
            margin-bottom: 14px;
        }
        .testimonial-card .author {
            font-weight: 600;
            font-size: 0.9rem;
            color: #fff;
        }
        .testimonial-card .author-role {
            font-size: 0.78rem;
            color: var(--color-text-light);
        }

        /* FAQ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-primary-light);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 20px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            transition: background var(--transition-fast);
            background: none;
            border: none;
            font-family: inherit;
        }
        .faq-question:hover {
            background: rgba(30, 64, 175, 0.02);
        }
        .faq-question .faq-arrow {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(30, 64, 175, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            transition: transform var(--transition-fast);
            color: var(--color-primary);
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            background: rgba(30, 64, 175, 0.12);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 0.9rem;
            color: var(--color-text-weak);
            line-height: 1.7;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            border-radius: var(--radius-xl);
            padding: 56px 40px;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -30px;
            left: -30px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            font-size: 1.05rem;
            opacity: 0.9;
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .btn {
            position: relative;
            z-index: 1;
        }

        /* Partners */
        .partner-strip {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 32px;
            padding: 20px 0;
        }
        .partner-item {
            padding: 16px 24px;
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            font-weight: 600;
            color: var(--color-text-weak);
            font-size: 0.9rem;
            letter-spacing: 0.5px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-fast);
            border: 1px solid var(--color-border-light);
            white-space: nowrap;
        }
        .partner-item:hover {
            color: var(--color-primary);
            box-shadow: var(--shadow-md);
            border-color: var(--color-border);
        }

        /* Footer */
        .site-footer {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .logo-text {
            color: #fff;
            font-size: 1.3rem;
            margin-bottom: 10px;
            display: inline-block;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: var(--color-text-light);
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            font-size: 0.85rem;
            color: var(--color-text-light);
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: var(--color-text-light);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid-5 {
                grid-template-columns: repeat(3, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .brand-story-block {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .brand-story-img img {
                height: 300px;
            }
            .hero-bg-img {
                width: 360px;
                height: 300px;
                right: -40px;
                opacity: 0.25;
            }
            .hero-title {
                font-size: 2.4rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .section {
                padding: 56px 0;
            }
            .section-sm {
                padding: 36px 0;
            }
            :root {
                --section-gap: 56px;
                --section-gap-sm: 36px;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .nav-cta.desktop-only {
                display: none;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .mobile-nav-overlay {
                display: block;
            }
            .mobile-nav-panel {
                display: flex;
            }
            .hero-section {
                padding: 50px 0 60px;
                min-height: auto;
            }
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero-bg-img {
                width: 240px;
                height: 200px;
                right: -20px;
                opacity: 0.2;
                top: 40%;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .card-grid-3,
            .card-grid-4 {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .card-grid-5 {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .section-header .section-title {
                font-size: 1.6rem;
            }
            .cta-section {
                padding: 36px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .brand-story-img img {
                height: 240px;
            }
            .brand-story-text h3 {
                font-size: 1.4rem;
            }
            .partner-strip {
                gap: 16px;
            }
            .partner-item {
                padding: 10px 16px;
                font-size: 0.8rem;
            }
            .section {
                padding: 40px 0;
            }
            .section-sm {
                padding: 28px 0;
            }
            :root {
                --section-gap: 40px;
                --section-gap-sm: 28px;
                --header-height: 58px;
            }
            .btn {
                padding: 11px 20px;
                font-size: 0.88rem;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.55rem;
            }
            .hero-desc {
                font-size: 0.88rem;
            }
            .hero-bg-img {
                width: 160px;
                height: 140px;
                right: -30px;
                opacity: 0.15;
                top: 35%;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 18px 12px;
            }
            .stat-number {
                font-size: 1.5rem;
            }
            .stat-icon {
                font-size: 1.5rem;
            }
            .card-grid-5 {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .section-header .section-title {
                font-size: 1.35rem;
            }
            .btn {
                padding: 10px 18px;
                font-size: 0.85rem;
            }
            .category-card .card-img-wrap {
                height: 150px;
            }
            .news-card .news-img {
                height: 150px;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .faq-answer-inner {
                padding: 0 16px 14px;
                font-size: 0.83rem;
            }
            .cta-section {
                padding: 28px 16px;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #1e4db7;
            --color-primary-dark: #153a8a;
            --color-primary-light: #e8eef9;
            --color-accent: #f0a030;
            --color-accent-dark: #d4891f;
            --color-accent-light: #fef7ed;
            --color-bg: #f6f8fc;
            --color-surface: #ffffff;
            --color-text: #1a1f2e;
            --color-text-secondary: #5a6275;
            --color-text-weak: #8b919e;
            --color-border: #e2e6ef;
            --color-border-light: #eef1f7;
            --color-success: #16a34a;
            --color-success-bg: #f0fdf6;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(26, 31, 46, 0.06), 0 1px 2px rgba(26, 31, 46, 0.04);
            --shadow-md: 0 4px 16px rgba(26, 31, 46, 0.08), 0 2px 6px rgba(26, 31, 46, 0.04);
            --shadow-lg: 0 8px 30px rgba(26, 31, 46, 0.10), 0 3px 10px rgba(26, 31, 46, 0.05);
            --shadow-xl: 0 14px 44px rgba(26, 31, 46, 0.12), 0 5px 16px rgba(26, 31, 46, 0.06);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --header-height: 70px;
            --container-max: 1200px;
            --container-padding: 24px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            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 {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
            font-size: inherit;
        }

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

        ul {
            list-style: none;
        }

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

        /* ========== HEADER ========== */
        .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-sm);
            height: var(--header-height);
            transition: box-shadow var(--transition-base);
        }

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

        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--container-padding);
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 20px;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            transition: opacity var(--transition-fast);
            text-decoration: none;
        }
        .logo-wrap:hover {
            opacity: 0.85;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary) 0%, #2d6ad4 100%);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            letter-spacing: -0.5px;
            box-shadow: 0 2px 8px rgba(30, 77, 183, 0.25);
        }

        .logo-text {
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--color-text);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
        }

        .main-nav a {
            padding: 8px 15px;
            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-light);
        }
        .main-nav a.active {
            color: var(--color-primary);
            background: var(--color-primary-light);
            font-weight: 600;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.95rem;
            background: var(--color-accent);
            color: #fff;
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition-fast);
            box-shadow: 0 2px 10px rgba(240, 160, 48, 0.3);
        }
        .nav-cta:hover {
            background: var(--color-accent-dark);
            box-shadow: 0 4px 16px rgba(240, 160, 48, 0.4);
            transform: translateY(-1px);
            color: #fff;
        }
        .nav-cta:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(240, 160, 48, 0.3);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-text);
            padding: 6px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            line-height: 1;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
        }
        .mobile-menu-btn:hover {
            background: var(--color-bg);
        }
        .mobile-menu-btn .icon-close {
            display: none;
        }
        .mobile-menu-btn.open .icon-menu {
            display: none;
        }
        .mobile-menu-btn.open .icon-close {
            display: inline;
        }

        /* ========== HERO BANNER ========== */
        .page-banner {
            position: relative;
            padding: 80px 0;
            background: url('assets/images/backpic/back-1.webp') center/cover no-repeat;
            min-height: 380px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 31, 46, 0.82) 0%, rgba(30, 77, 183, 0.7) 50%, rgba(26, 31, 46, 0.78) 100%);
            z-index: 1;
        }
        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            color: #fff;
            max-width: 720px;
        }
        .page-banner .banner-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            color: #fff;
        }
        .page-banner h1 {
            font-size: 2.6rem;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .page-banner .banner-desc {
            font-size: 1.1rem;
            line-height: 1.7;
            opacity: 0.9;
            max-width: 560px;
        }

        /* ========== MAIN ========== */
        .site-main {
            flex: 1;
        }

        .section {
            padding: 60px 0;
        }
        .section-alt {
            background: var(--color-surface);
        }
        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }
        .section-header .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }

        /* ========== SERVICE CARDS ========== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
        }
        .service-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;
        }
        .service-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }
        .service-card .card-img-wrap {
            position: relative;
            height: 200px;
            overflow: hidden;
            background: #eef2f8;
        }
        .service-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .service-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }
        .service-card .card-img-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
            letter-spacing: 0.5px;
            z-index: 2;
        }
        .service-card .card-body {
            padding: 22px 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .service-card .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
        }
        .service-card .card-body p {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.65;
            margin-bottom: 16px;
            flex: 1;
        }
        .service-card .card-body .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-primary);
            transition: gap var(--transition-fast);
            align-self: flex-start;
        }
        .service-card .card-body .card-link:hover {
            gap: 10px;
            color: var(--color-primary-dark);
        }
        .service-card .card-body .card-link .arrow {
            font-size: 1.1rem;
            transition: transform var(--transition-fast);
        }
        .service-card .card-body .card-link:hover .arrow {
            transform: translateX(3px);
        }

        /* ========== PROCESS STEPS ========== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            position: relative;
        }
        .process-step {
            text-align: center;
            padding: 30px 20px;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            position: relative;
            transition: all var(--transition-base);
        }
        .process-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .process-step .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 14px;
            box-shadow: 0 4px 14px rgba(30, 77, 183, 0.3);
        }
        .process-step h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--color-text);
        }
        .process-step p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.55;
        }

        /* ========== STATS ROW ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 20px;
            text-align: center;
        }
        .stat-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 28px 18px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-primary-light);
        }
        .stat-card .stat-value {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.5px;
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            font-weight: 500;
        }

        /* ========== CASE CARDS ========== */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }
        .case-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);
        }
        .case-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .case-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .case-card:hover img {
            transform: scale(1.03);
        }
        .case-card .case-body {
            padding: 18px 18px 20px;
        }
        .case-card .case-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--color-text);
        }
        .case-card .case-body p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.55;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .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);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 22px;
            text-align: left;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            transition: color var(--transition-fast);
            line-height: 1.5;
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            transition: all var(--transition-fast);
            color: var(--color-text-secondary);
        }
        .faq-item.open .faq-question .faq-icon {
            background: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
        }
        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, #1a3f8f 50%, var(--color-primary-dark) 100%);
            color: #fff;
            text-align: center;
            padding: 60px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -50px;
            left: -70px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .cta-section p {
            font-size: 1.05rem;
            opacity: 0.85;
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }
        .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            background: var(--color-accent);
            color: #fff;
            transition: all var(--transition-fast);
            box-shadow: 0 6px 22px rgba(240, 160, 48, 0.4);
            letter-spacing: 0.3px;
        }
        .btn-cta-large:hover {
            background: #e8941c;
            box-shadow: 0 8px 28px rgba(240, 160, 48, 0.5);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-cta-large:active {
            transform: translateY(0);
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            background: transparent;
            transition: all var(--transition-fast);
            margin-left: 12px;
        }
        .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #141820;
            color: #c5cad4;
            padding: 50px 0 28px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-brand .logo-text {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: 10px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.65;
            color: #9aa0ad;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 7px;
        }
        .footer-col ul li a {
            font-size: 0.9rem;
            color: #9aa0ad;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 18px;
            text-align: center;
            font-size: 0.85rem;
            color: #6e7480;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .page-banner h1 {
                font-size: 2.2rem;
            }
            .page-banner {
                padding: 60px 0;
                min-height: 300px;
            }
            .service-grid {
                grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
                gap: 20px;
            }
            .case-grid {
                grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .desktop-only {
                display: none !important;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--color-surface);
                flex-direction: column;
                align-items: stretch;
                padding: 12px 16px;
                gap: 2px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                transition: transform var(--transition-base), opacity var(--transition-base);
                z-index: 999;
                max-height: 70vh;
                overflow-y: auto;
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
            }
            .main-nav a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }
            .nav-cta.desktop-only {
                display: none;
            }
            .page-banner {
                padding: 46px 0;
                min-height: 260px;
            }
            .page-banner h1 {
                font-size: 1.75rem;
            }
            .page-banner .banner-desc {
                font-size: 0.95rem;
            }
            .section {
                padding: 40px 0;
            }
            .section-header h2 {
                font-size: 1.55rem;
            }
            .service-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .case-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .btn-outline-light {
                margin-left: 0;
                margin-top: 10px;
            }
            .stat-card .stat-value {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 520px) {
            :root {
                --container-padding: 16px;
                --header-height: 60px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }
            .logo-text {
                font-size: 1.1rem;
            }
            .page-banner {
                padding: 36px 0;
                min-height: 220px;
            }
            .page-banner h1 {
                font-size: 1.4rem;
            }
            .page-banner .banner-desc {
                font-size: 0.85rem;
            }
            .process-steps {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 18px 12px;
            }
            .stat-card .stat-value {
                font-size: 1.5rem;
            }
            .service-card .card-img-wrap {
                height: 160px;
            }
            .section-header h2 {
                font-size: 1.35rem;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-answer-inner {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
            .btn-cta-large {
                padding: 12px 26px;
                font-size: 0.95rem;
            }
            .btn-outline-light {
                padding: 11px 24px;
                font-size: 0.9rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1a56db;
            --primary-dark: #1540a8;
            --primary-light: #e8f0fe;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --accent-light: #fef3c7;
            --bg: #f8fafc;
            --bg-white: #ffffff;
            --bg-dark: #0f172a;
            --bg-dark-alt: #1e293b;
            --text: #1e293b;
            --text-secondary: #475569;
            --text-weak: #64748b;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.07), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.10), 0 3px 10px rgba(0, 0, 0, 0.05);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12), 0 4px 16px rgba(0, 0, 0, 0.06);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-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: 1.7;
            color: var(--text);
            background: var(--bg);
            min-width: 320px;
            overflow-x: hidden;
        }

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

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

        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
            font-size: inherit;
        }

        input {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 10px 16px;
            transition: border-color var(--transition), box-shadow var(--transition);
            width: 100%;
        }
        input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
        }

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

        /* ========== HEADER ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            gap: 20px;
            height: 100%;
        }
        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            transition: opacity var(--transition);
        }
        .logo-wrap:hover {
            opacity: 0.85;
            color: inherit;
        }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            font-size: 16px;
            letter-spacing: -0.5px;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }
        .logo-text {
            font-weight: 700;
            font-size: 20px;
            color: var(--text);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
        }
        .main-nav a {
            padding: 8px 15px;
            border-radius: var(--radius-sm);
            font-size: 14.5px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .main-nav a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            background: var(--primary);
            color: #fff !important;
            border-radius: 25px;
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
            transition: all var(--transition);
            box-shadow: 0 2px 8px rgba(26, 86, 219, 0.3);
        }
        .nav-cta:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 16px rgba(26, 86, 219, 0.4);
            transform: translateY(-1px);
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            font-size: 24px;
            color: var(--text);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
            line-height: 1;
        }
        .mobile-menu-btn:hover {
            background: var(--border-light);
        }
        .mobile-menu-btn .icon-close {
            display: none;
        }
        .mobile-menu-btn.open .icon-menu {
            display: none;
        }
        .mobile-menu-btn.open .icon-close {
            display: inline;
        }
        .desktop-only {
            display: inline-flex;
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            padding: 60px 0 56px;
            background: var(--bg-dark);
            background-image: url('assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center 40%;
            background-repeat: no-repeat;
            overflow: hidden;
            isolation: isolate;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg,
                    rgba(15, 23, 42, 0.88) 0%,
                    rgba(15, 23, 42, 0.78) 40%,
                    rgba(26, 86, 219, 0.45) 100%);
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .page-banner .banner-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(245, 158, 11, 0.2);
            border: 1px solid rgba(245, 158, 11, 0.35);
            color: var(--accent);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }
        .page-banner h1 {
            font-size: clamp(28px, 5vw, 42px);
            font-weight: 800;
            color: #ffffff;
            letter-spacing: -0.5px;
            line-height: 1.25;
            margin-bottom: 12px;
        }
        .page-banner .banner-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            line-height: 1.6;
        }
        .page-banner .banner-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 20px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
        }
        .page-banner .banner-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .page-banner .banner-meta i {
            color: var(--accent);
            font-size: 13px;
        }

        /* ========== MAIN LAYOUT ========== */
        .category-main {
            padding: 48px 0 60px;
        }
        .category-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 36px;
            align-items: start;
        }

        /* ========== ARTICLE LIST ========== */
        .article-list-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 2px solid var(--border);
        }
        .article-list-header h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.3px;
        }
        .article-list-header .sort-tabs {
            display: flex;
            gap: 4px;
            background: var(--border-light);
            border-radius: 20px;
            padding: 3px;
        }
        .sort-tabs button {
            padding: 7px 16px;
            border-radius: 18px;
            font-size: 13px;
            font-weight: 500;
            background: transparent;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .sort-tabs button:hover {
            color: var(--text);
        }
        .sort-tabs button.active-sort {
            background: var(--bg-white);
            color: var(--primary);
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }
        .articles-grid {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .article-card {
            display: grid;
            grid-template-columns: 260px 1fr;
            gap: 20px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .article-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: #cbd5e1;
        }
        .article-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            min-height: 180px;
            background: var(--border-light);
        }
        .article-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .article-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }
        .article-card .card-img-wrap .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 5px 12px;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            border-radius: 14px;
            z-index: 2;
        }
        .article-card .card-body {
            padding: 18px 20px 18px 4px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 8px;
        }
        .article-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
            letter-spacing: -0.2px;
        }
        .article-card .card-body h3 a {
            color: inherit;
            transition: color var(--transition);
        }
        .article-card .card-body h3 a:hover {
            color: var(--primary);
        }
        .article-card .card-body .card-excerpt {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card .card-body .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 12.5px;
            color: var(--text-light);
            flex-wrap: wrap;
        }
        .article-card .card-body .card-meta i {
            font-size: 11px;
            color: var(--text-light);
            margin-right: 2px;
        }
        .article-card .card-body .read-more {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-weight: 600;
            font-size: 13px;
            color: var(--primary);
            transition: gap var(--transition);
        }
        .article-card .card-body .read-more:hover {
            gap: 9px;
            color: var(--primary-dark);
        }

        /* ========== PAGINATION ========== */
        .pagination {
            display: flex;
            justify-content: center;
            gap: 6px;
            margin-top: 36px;
            flex-wrap: wrap;
        }
        .pagination .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 14px;
            background: var(--bg-white);
            border: 1px solid var(--border);
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .pagination .page-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }
        .pagination .page-btn.active-page {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 700;
            box-shadow: var(--shadow-sm);
        }
        .pagination .page-btn.page-dot {
            border: none;
            background: transparent;
            cursor: default;
            color: var(--text-light);
        }

        /* ========== SIDEBAR ========== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: calc(var(--header-height) + 24px);
        }
        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 22px 20px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border);
            letter-spacing: -0.2px;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-cloud .tag {
            padding: 6px 14px;
            border-radius: 18px;
            font-size: 13px;
            font-weight: 500;
            background: var(--bg);
            color: var(--text-secondary);
            border: 1px solid var(--border);
            transition: all var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }
        .tag-cloud .tag:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: var(--primary);
        }
        .tag-cloud .tag.hot-tag {
            background: #fef3c7;
            color: #b45309;
            border-color: #fcd34d;
            font-weight: 600;
        }
        .hot-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .hot-list li a {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.4;
            transition: color var(--transition);
            padding: 6px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .hot-list li:last-child a {
            border-bottom: none;
        }
        .hot-list li a:hover {
            color: var(--primary);
        }
        .hot-list .hot-rank {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 22px;
            height: 22px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: 700;
            background: var(--primary-light);
            color: var(--primary);
            flex-shrink: 0;
        }
        .hot-list li:nth-child(1) .hot-rank {
            background: #fef3c7;
            color: #b45309;
        }
        .hot-list li:nth-child(2) .hot-rank {
            background: #e8f0fe;
            color: #1a56db;
        }
        .hot-list li:nth-child(3) .hot-rank {
            background: #fce7f3;
            color: #be185d;
        }

        /* ========== STATS STRIP ========== */
        .stats-strip {
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 32px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }
        .stat-item .stat-number {
            font-size: clamp(26px, 4vw, 36px);
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            line-height: 1.1;
        }
        .stat-item .stat-label {
            font-size: 13px;
            color: var(--text-weak);
            margin-top: 4px;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 52px 0;
            background: linear-gradient(160deg, #0f172a 0%, #1a3a6b 50%, #0f172a 100%);
            position: relative;
            overflow: hidden;
            isolation: isolate;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('assets/images/backpic/back-3.webp') center/cover no-repeat;
            opacity: 0.12;
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h3 {
            font-size: clamp(24px, 4vw, 32px);
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: -0.3px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            max-width: 500px;
            margin: 0 auto 24px;
        }
        .cta-section .cta-form {
            display: flex;
            gap: 10px;
            max-width: 460px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }
        .cta-section .cta-form input {
            flex: 1;
            min-width: 200px;
            padding: 13px 18px;
            border-radius: 25px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 14px;
        }
        .cta-section .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .cta-section .cta-form input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.2);
        }
        .cta-section .cta-form .btn-submit {
            padding: 13px 28px;
            border-radius: 25px;
            background: var(--accent);
            color: #0f172a;
            font-weight: 700;
            font-size: 14px;
            transition: all var(--transition);
            white-space: nowrap;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35);
        }
        .cta-section .cta-form .btn-submit:hover {
            background: #fbbf24;
            box-shadow: 0 6px 24px rgba(245, 158, 11, 0.5);
            transform: translateY(-1px);
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: 52px 0 56px;
            background: var(--bg-white);
        }
        .faq-section .section-title {
            text-align: center;
            margin-bottom: 32px;
        }
        .faq-section .section-title h3 {
            font-size: clamp(22px, 3.5vw, 28px);
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.3px;
        }
        .faq-section .section-title p {
            color: var(--text-weak);
            font-size: 15px;
            margin-top: 6px;
        }
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: #cbd5e1;
        }
        .faq-item .faq-q {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            background: none;
            font-weight: 600;
            font-size: 15px;
            color: var(--text);
            text-align: left;
            gap: 12px;
            transition: background var(--transition);
        }
        .faq-item .faq-q:hover {
            background: var(--border-light);
        }
        .faq-item .faq-q i {
            transition: transform var(--transition);
            color: var(--text-light);
            font-size: 13px;
            flex-shrink: 0;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 48px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            display: inline-block;
            margin-bottom: 10px;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.6;
            color: rgba(255, 255, 255, 0.6);
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.2px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 7px;
        }
        .footer-col ul li a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 12.5px;
            color: rgba(255, 255, 255, 0.45);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .category-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .article-card {
                grid-template-columns: 200px 1fr;
                gap: 14px;
            }
        }
        @media (max-width: 768px) {
            .desktop-only {
                display: none;
            }
            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 2px solid var(--border);
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                transition: transform 0.3s ease, opacity 0.3s ease;
                z-index: 999;
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
            }
            .main-nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 15px;
            }
            .mobile-menu-btn {
                display: inline-flex;
            }
            .article-card {
                grid-template-columns: 1fr;
            }
            .article-card .card-img-wrap {
                min-height: 200px;
                max-height: 240px;
            }
            .article-card .card-body {
                padding: 14px 18px 18px;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .page-banner {
                padding: 40px 0 36px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .header-inner {
                padding: 0 14px;
                gap: 10px;
            }
            .logo-text {
                font-size: 17px;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 14px;
            }
            .page-banner h1 {
                font-size: 24px;
            }
            .page-banner .banner-desc {
                font-size: 14px;
            }
            .article-list-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .sort-tabs button {
                padding: 6px 12px;
                font-size: 12px;
            }
            .pagination .page-btn {
                width: 34px;
                height: 34px;
                font-size: 12px;
            }
            .cta-section .cta-form {
                flex-direction: column;
            }
            .cta-section .cta-form input {
                min-width: auto;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0b2341;
            --primary-light: #153a63;
            --primary-mid: #1a4f85;
            --accent: #0284c7;
            --accent-light: #0ea5e9;
            --accent-pale: #e0f2fe;
            --cta: #f59e0b;
            --cta-hover: #d97706;
            --cta-light: #fef3c7;
            --text: #1e293b;
            --text-strong: #0f172a;
            --text-mid: #475569;
            --text-light: #64748b;
            --text-muted: #94a3b8;
            --bg: #ffffff;
            --bg-alt: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #0b2341;
            --bg-dark-alt: #0f2d52;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --border-strong: #cbd5e1;
            --radius-sm: 8px;
            --radius: 12px;
            --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: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-md: 0 6px 28px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.13);
            --transition-fast: 0.15s ease;
            --transition: 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;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'monospace';
            --max-width: 1200px;
            --header-height: 68px;
            --section-pad: 72px;
            --section-pad-sm: 48px;
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--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);
        }

        ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            padding: 0;
        }

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

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0;
            line-height: 1.3;
            color: var(--text-strong);
        }

        p {
            margin: 0 0 1em;
        }

        p:last-child {
            margin-bottom: 0;
        }

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

        /* ========== HEADER ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-xs);
            height: var(--header-height);
            transition: box-shadow var(--transition);
        }

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

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            gap: 20px;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            transition: opacity var(--transition-fast);
        }

        .logo-wrap:hover {
            opacity: 0.85;
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            font-size: 16px;
            border-radius: var(--radius-sm);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-strong);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

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

        .main-nav a {
            padding: 8px 15px;
            border-radius: 20px;
            font-size: 14.5px;
            font-weight: 500;
            color: var(--text-mid);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
            letter-spacing: 0.2px;
        }

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

        .main-nav a.active {
            color: #ffffff;
            background: var(--accent);
            font-weight: 600;
            box-shadow: 0 2px 10px rgba(2, 132, 199, 0.3);
        }

        .nav-cta {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            background: var(--cta);
            color: #1a1a1a;
            font-weight: 700;
            font-size: 14px;
            border-radius: 24px;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.3px;
            box-shadow: 0 2px 12px rgba(245, 158, 11, 0.3);
        }

        .nav-cta:hover {
            background: var(--cta-hover);
            color: #0a0a0a;
            transform: translateY(-1px);
            box-shadow: 0 4px 18px rgba(245, 158, 11, 0.4);
        }

        .mobile-menu-btn {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            font-size: 22px;
            color: var(--text-strong);
            transition: background var(--transition-fast);
            flex-shrink: 0;
        }

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

        .icon-close {
            display: none;
        }

        .mobile-menu-btn.open .icon-menu {
            display: none;
        }

        .mobile-menu-btn.open .icon-close {
            display: inline;
        }

        @media (max-width: 1024px) {
            .desktop-only {
                display: none !important;
            }

            .mobile-menu-btn {
                display: flex;
            }

            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                box-shadow: var(--shadow-md);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: transform var(--transition-slow), opacity var(--transition-slow);
                z-index: 999;
                border-bottom: 2px solid var(--border-light);
            }

            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .main-nav a {
                width: 100%;
                text-align: center;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 15px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 60px;
            }

            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 14px;
            }

            .logo-text {
                font-size: 17px;
            }

            .header-inner {
                padding: 0 16px;
                gap: 12px;
            }
        }

        /* ========== MAIN LAYOUT ========== */
        main {
            flex: 1;
        }

        .section {
            padding: var(--section-pad) 0;
        }

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

        .section-dark {
            background: var(--bg-dark);
            color: #e2e8f0;
        }

        .section-dark h2,
        .section-dark h3 {
            color: #ffffff;
        }

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

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.4px;
        }

        .section-header .section-subtitle {
            font-size: 16px;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }

        .section-dark .section-subtitle {
            color: #94a3b8;
        }

        @media (max-width: 768px) {
            :root {
                --section-pad: 48px;
                --section-pad-sm: 36px;
            }

            .section {
                padding: var(--section-pad-sm) 0;
            }

            .section-header h2 {
                font-size: 26px;
            }

            .section-header {
                margin-bottom: 32px;
            }
        }

        /* ========== BANNER ========== */
        .page-banner {
            position: relative;
            padding: 80px 0 72px;
            background: linear-gradient(160deg, #0b2341 0%, #153a63 40%, #1a4f85 100%);
            overflow: hidden;
            color: #ffffff;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            z-index: 0;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, rgba(255, 255, 255, 0.04), transparent);
            z-index: 0;
        }

        .banner-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 760px;
            margin: 0 auto;
        }

        .banner-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 255, 255, 0.13);
            border: 1px solid rgba(255, 255, 255, 0.22);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            color: #e0f2fe;
        }

        .banner-inner h1 {
            font-size: 42px;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 16px;
            letter-spacing: -0.6px;
            line-height: 1.25;
        }

        .banner-inner .banner-desc {
            font-size: 17px;
            color: #cbd5e1;
            line-height: 1.7;
            max-width: 560px;
            margin: 0 auto;
        }

        .banner-stats-row {
            display: flex;
            justify-content: center;
            gap: 48px;
            margin-top: 36px;
            flex-wrap: wrap;
        }

        .banner-stat {
            text-align: center;
        }

        .banner-stat .stat-num {
            font-size: 38px;
            font-weight: 800;
            color: #f59e0b;
            letter-spacing: -1px;
            line-height: 1;
        }

        .banner-stat .stat-label {
            font-size: 13px;
            color: #94a3b8;
            margin-top: 6px;
            letter-spacing: 0.3px;
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 56px 0 48px;
            }

            .banner-inner h1 {
                font-size: 30px;
            }

            .banner-inner .banner-desc {
                font-size: 15px;
            }

            .banner-stats-row {
                gap: 28px;
            }

            .banner-stat .stat-num {
                font-size: 28px;
            }
        }

        @media (max-width: 520px) {
            .banner-inner h1 {
                font-size: 24px;
            }

            .banner-stats-row {
                gap: 18px;
            }

            .banner-stat .stat-num {
                font-size: 24px;
            }

            .banner-stat .stat-label {
                font-size: 11px;
            }
        }

        /* ========== CARDS GRID ========== */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

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

        .cards-grid.three-col {
            grid-template-columns: repeat(3, 1fr);
        }

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

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

        @media (max-width: 600px) {
            .cards-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .cards-grid.two-col,
            .cards-grid.three-col {
                grid-template-columns: 1fr;
            }
        }

        /* ========== CAPABILITY CARD ========== */
        .capability-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .capability-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--accent);
            opacity: 0;
            transition: opacity var(--transition);
        }

        .capability-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--border-strong);
        }

        .capability-card:hover::before {
            opacity: 1;
        }

        .cap-card-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 26px;
            background: var(--accent-pale);
            color: var(--accent);
            transition: all var(--transition);
        }

        .capability-card:hover .cap-card-icon {
            background: var(--accent);
            color: #fff;
            transform: scale(1.05);
        }

        .capability-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-strong);
        }

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

        /* ========== REPORT CARD ========== */
        .report-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .report-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            background: var(--bg-alt);
        }

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

        .report-card-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 12px;
            background: var(--accent-pale);
            color: var(--accent);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
            align-self: flex-start;
        }

        .report-card-body h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--text-strong);
        }

        .report-card-body .report-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .report-card-body p {
            font-size: 13.5px;
            color: var(--text-light);
            line-height: 1.6;
            flex: 1;
        }

        .report-card-body .report-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 14px;
            font-weight: 600;
            font-size: 13.5px;
            color: var(--accent);
            transition: color var(--transition-fast);
            align-self: flex-start;
        }

        .report-card-body .report-link:hover {
            color: var(--primary-mid);
            text-decoration: underline;
        }

        .report-card-body .report-link::after {
            content: '→';
            transition: transform var(--transition-fast);
        }

        .report-card-body .report-link:hover::after {
            transform: translateX(3px);
        }

        @media (max-width: 768px) {
            .report-card-img {
                height: 160px;
            }
        }

        /* ========== PROCESS / TIMELINE ========== */
        .process-list {
            display: flex;
            gap: 0;
            position: relative;
            flex-wrap: nowrap;
            overflow-x: auto;
            padding-bottom: 8px;
        }

        .process-step {
            flex: 1;
            min-width: 200px;
            text-align: center;
            position: relative;
            padding: 0 16px;
        }

        .process-step-num {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            font-weight: 800;
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            position: relative;
            z-index: 2;
            box-shadow: 0 4px 16px rgba(2, 132, 199, 0.3);
        }

        .process-step::after {
            content: '';
            position: absolute;
            top: 26px;
            left: calc(50% + 30px);
            right: calc(-50% + 30px);
            height: 3px;
            background: var(--accent-pale);
            z-index: 1;
            border-radius: 2px;
        }

        .process-step:last-child::after {
            display: none;
        }

        .process-step h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-strong);
        }

        .process-step p {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.5;
        }

        @media (max-width: 768px) {
            .process-list {
                flex-wrap: wrap;
                gap: 24px;
            }

            .process-step {
                min-width: 140px;
                flex: 0 0 calc(50% - 12px);
            }

            .process-step::after {
                display: none;
            }

            .process-step-num {
                width: 44px;
                height: 44px;
                font-size: 17px;
            }
        }

        @media (max-width: 520px) {
            .process-step {
                flex: 0 0 100%;
                min-width: 100%;
            }
        }

        /* ========== STATS STRIP ========== */
        .stats-strip {
            display: flex;
            justify-content: center;
            gap: 48px;
            flex-wrap: wrap;
        }

        .stats-item {
            text-align: center;
            padding: 24px;
        }

        .stats-item .big-num {
            font-size: 48px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -1.5px;
            line-height: 1;
        }

        .stats-item .big-num .plus {
            color: var(--accent);
        }

        .stats-item .stats-label {
            font-size: 14px;
            color: var(--text-light);
            margin-top: 8px;
            letter-spacing: 0.3px;
        }

        .section-dark .big-num {
            color: #ffffff;
        }

        .section-dark .big-num .plus {
            color: var(--cta);
        }

        .section-dark .stats-label {
            color: #94a3b8;
        }

        @media (max-width: 768px) {
            .stats-strip {
                gap: 24px;
            }

            .stats-item .big-num {
                font-size: 36px;
            }
        }

        @media (max-width: 520px) {
            .stats-item .big-num {
                font-size: 30px;
            }

            .stats-strip {
                gap: 12px;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-xs);
        }

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

        .faq-q {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-size: 15.5px;
            font-weight: 600;
            color: var(--text-strong);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            transition: color var(--transition-fast);
            line-height: 1.4;
        }

        .faq-q:hover {
            color: var(--accent);
        }

        .faq-q .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--accent-pale);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            transition: all var(--transition-fast);
        }

        .faq-item.open .faq-icon {
            background: var(--accent);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-a {
            padding: 0 22px 18px;
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }

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

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(150deg, #0b2341 0%, #153a63 50%, #0f2d52 100%);
            text-align: center;
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            z-index: 0;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 30px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .cta-inner p {
            color: #cbd5e1;
            font-size: 15px;
            margin-bottom: 28px;
            line-height: 1.6;
        }

        .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            background: var(--cta);
            color: #1a1a1a;
            font-weight: 700;
            font-size: 16px;
            border-radius: 28px;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 20px rgba(245, 158, 11, 0.35);
            letter-spacing: 0.3px;
        }

        .btn-cta-large:hover {
            background: var(--cta-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.45);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: transparent;
            color: #ffffff;
            font-weight: 600;
            font-size: 15px;
            border-radius: 28px;
            border: 2px solid rgba(255, 255, 255, 0.35);
            transition: all var(--transition-fast);
            letter-spacing: 0.3px;
            margin-left: 14px;
        }

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

        @media (max-width: 768px) {
            .cta-section {
                padding: 48px 0;
            }

            .cta-inner h2 {
                font-size: 24px;
            }

            .btn-outline-light {
                margin-left: 0;
                margin-top: 12px;
            }

            .cta-buttons {
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 12px;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0b1e33;
            color: #cbd5e1;
            padding: 52px 0 28px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 36px;
        }

        .footer-brand .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: #ffffff;
            display: inline-block;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 13.5px;
            color: #94a3b8;
            line-height: 1.7;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 14px;
            letter-spacing: 0.4px;
            text-transform: uppercase;
            font-size: 12px;
            letter-spacing: 1px;
            opacity: 0.85;
        }

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

        .footer-col ul li a {
            font-size: 13.5px;
            color: #94a3b8;
            transition: color var(--transition-fast);
            line-height: 1.5;
        }

        .footer-col ul li a:hover {
            color: #ffffff;
            text-decoration: underline;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 36px;
            padding-top: 20px;
            text-align: center;
            font-size: 12.5px;
            color: #64748b;
            letter-spacing: 0.2px;
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 600px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .site-footer {
                padding: 36px 0 20px;
            }

            .footer-brand p {
                max-width: 100%;
            }
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-row {
            padding: 14px 0;
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb-row .sep {
            color: var(--text-muted);
            user-select: none;
        }

        .breadcrumb-row .current {
            color: var(--text-strong);
            font-weight: 600;
        }

        /* ========== MISC ========== */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #1e40af;
            --primary-light: #3b82f6;
            --primary-dark: #1e3a8a;
            --primary-bg: #eff6ff;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --accent-bg: #fffbeb;
            --bg: #f8fafc;
            --bg-white: #ffffff;
            --bg-dark: #0f172a;
            --bg-slate: #1e293b;
            --text: #1e293b;
            --text-light: #475569;
            --text-lighter: #64748b;
            --text-muted: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
            --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.06), 0 2px 4px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.08), 0 4px 10px rgba(0, 0, 0, 0.04);
            --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.1), 0 8px 16px rgba(0, 0, 0, 0.05);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --transition: 0.2s ease;
            --transition-slow: 0.35s ease;
        }

        *,
        *::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: 1.7;
            color: var(--text);
            background-color: var(--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);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            font-size: inherit;
        }

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

        ul {
            list-style: none;
        }

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

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-xs);
            transition: box-shadow var(--transition);
        }

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

        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 20px;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            text-decoration: none;
            color: var(--text);
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-weight: 800;
            font-size: 16px;
            border-radius: var(--radius-sm);
            letter-spacing: -0.5px;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
        }

        .main-nav a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 14.5px;
            font-weight: 500;
            color: var(--text-light);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }

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

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

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            background: var(--primary);
            color: #fff !important;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 14.5px;
            white-space: nowrap;
            transition: all var(--transition);
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(30, 64, 175, 0.25);
        }

        .nav-cta:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 16px rgba(30, 64, 175, 0.35);
            transform: translateY(-1px);
        }

        .mobile-menu-btn {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            font-size: 22px;
            color: var(--text);
            transition: background var(--transition);
            flex-shrink: 0;
        }

        .mobile-menu-btn:hover {
            background: var(--border-light);
        }

        .mobile-menu-btn .icon-close {
            display: none;
        }

        .mobile-menu-btn.open .icon-menu {
            display: none;
        }

        .mobile-menu-btn.open .icon-close {
            display: inline;
        }

        /* Main */
        .page-main {
            flex: 1;
        }

        /* Section spacing */
        .section {
            padding: 64px 0;
        }

        .section-sm {
            padding: 40px 0;
        }

        .section-lg {
            padding: 80px 0;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            letter-spacing: -0.3px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-lighter);
            margin-bottom: 40px;
            line-height: 1.6;
        }

        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }

        .section-header .section-title {
            margin-bottom: 12px;
        }

        /* Hero Banner */
        .category-hero {
            position: relative;
            padding: 80px 0 72px;
            background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 40%, #1e40af 100%);
            color: #fff;
            overflow: hidden;
            text-align: center;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            z-index: 0;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--bg) 0%, transparent 100%);
            z-index: 1;
        }

        .category-hero .container {
            position: relative;
            z-index: 2;
        }

        .category-hero .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 1px;
            margin-bottom: 16px;
            backdrop-filter: blur(4px);
        }

        .category-hero h1 {
            font-size: 42px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            line-height: 1.2;
        }

        .category-hero .hero-desc {
            font-size: 17px;
            max-width: 640px;
            margin: 0 auto 28px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
        }

        .hero-search-wrap {
            display: flex;
            max-width: 520px;
            margin: 0 auto;
            gap: 0;
            background: #fff;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: var(--shadow-xl);
        }

        .hero-search-wrap input {
            flex: 1;
            border: none;
            padding: 14px 22px;
            font-size: 15px;
            outline: none;
            color: var(--text);
            background: #fff;
            min-width: 0;
        }

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

        .hero-search-wrap button {
            padding: 14px 26px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            white-space: nowrap;
            transition: background var(--transition);
            border-radius: 0;
        }

        .hero-search-wrap button:hover {
            background: var(--primary-dark);
        }

        /* Resource Grid */
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .resource-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-slow);
            display: flex;
            flex-direction: column;
        }

        .resource-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: #cbd5e1;
        }

        .resource-card .card-img-wrap {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--border-light);
        }

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

        .resource-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }

        .resource-card .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 5px 12px;
            background: var(--accent);
            color: #7c2d12;
            font-size: 12px;
            font-weight: 700;
            border-radius: 50px;
            letter-spacing: 0.5px;
            z-index: 2;
        }

        .resource-card .card-tag.free {
            background: #10b981;
            color: #fff;
        }

        .resource-card .card-tag.hot {
            background: #ef4444;
            color: #fff;
        }

        .resource-card .card-body {
            padding: 18px 18px 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .resource-card .card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .resource-card .card-desc {
            font-size: 14px;
            color: var(--text-lighter);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
        }

        .resource-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }

        .resource-card .card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .resource-card .card-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            transition: all var(--transition);
            white-space: nowrap;
            align-self: flex-start;
            margin-top: 4px;
        }

        .resource-card .card-btn:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 12px rgba(30, 64, 175, 0.3);
        }

        /* Category Browse */
        .category-browse-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .browse-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition);
            cursor: pointer;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }

        .browse-card:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .browse-card .browse-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            flex-shrink: 0;
        }

        .browse-card .browse-icon.reports {
            background: #eff6ff;
            color: var(--primary);
        }
        .browse-card .browse-icon.tools {
            background: #fef3c7;
            color: #d97706;
        }
        .browse-card .browse-icon.videos {
            background: #fce7f3;
            color: #db2777;
        }
        .browse-card .browse-icon.templates {
            background: #d1fae5;
            color: #059669;
        }

        .browse-card .browse-name {
            font-weight: 600;
            font-size: 15px;
            color: var(--text);
        }

        .browse-card .browse-count {
            font-size: 12px;
            color: var(--text-muted);
        }

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

        .stat-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .stat-card .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -1px;
            line-height: 1;
            margin-bottom: 8px;
        }

        .stat-card .stat-label {
            font-size: 14px;
            color: var(--text-lighter);
            font-weight: 500;
        }

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

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

        .faq-item:hover {
            border-color: #cbd5e1;
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 15.5px;
            color: var(--text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: color var(--transition);
            background: none;
            border: none;
            cursor: pointer;
            font-family: inherit;
            line-height: 1.5;
        }

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

        .faq-question .faq-arrow {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: all var(--transition);
            color: var(--text-lighter);
        }

        .faq-item.open .faq-question .faq-arrow {
            background: var(--primary-bg);
            color: var(--primary);
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
            font-size: 14.5px;
            color: var(--text-lighter);
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 22px 20px;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            color: #fff;
            text-align: center;
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
            z-index: 0;
        }

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

        .cta-section h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
            max-width: 540px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            font-size: 16px;
            border-radius: 50px;
            transition: all var(--transition);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
        }

        .cta-section .cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            background: #f8fafc;
        }

        .cta-section .cta-btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            border-radius: 50px;
            border: 2px solid rgba(255, 255, 255, 0.5);
            transition: all var(--transition);
            margin-left: 12px;
        }

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

        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: #cbd5e1;
            padding: 56px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #94a3b8;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

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

        .footer-col ul li a {
            font-size: 14px;
            color: #94a3b8;
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            text-align: center;
            padding: 22px 0;
            font-size: 13px;
            color: #64748b;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .resource-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .category-browse-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .category-hero h1 {
                font-size: 34px;
            }
            .desktop-only {
                display: none !important;
            }
            .main-nav {
                gap: 0;
            }
            .main-nav a {
                padding: 6px 10px;
                font-size: 13.5px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 56px;
                padding: 0 16px;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: 56px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition-slow);
                z-index: 99;
                pointer-events: none;
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 15px;
                border-radius: var(--radius-sm);
            }
            .nav-cta.desktop-only {
                display: none;
            }
            .resource-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .category-browse-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-card .stat-number {
                font-size: 28px;
            }
            .category-hero {
                padding: 56px 0 48px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero .hero-desc {
                font-size: 15px;
            }
            .hero-search-wrap {
                flex-direction: column;
                border-radius: var(--radius);
                overflow: hidden;
            }
            .hero-search-wrap input {
                border-radius: 0;
                padding: 12px 16px;
            }
            .hero-search-wrap button {
                border-radius: 0;
                padding: 12px;
                text-align: center;
                width: 100%;
            }
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .cta-section .cta-btn-outline {
                margin-left: 0;
                margin-top: 10px;
                display: inline-flex;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .category-hero .hero-desc {
                font-size: 14px;
            }
            .stat-card {
                padding: 20px 14px;
            }
            .stat-card .stat-number {
                font-size: 24px;
            }
            .stat-card .stat-label {
                font-size: 12px;
            }
            .category-browse-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .browse-card {
                padding: 16px 12px;
            }
            .browse-card .browse-icon {
                width: 40px;
                height: 40px;
                font-size: 20px;
            }
            .cta-section h2 {
                font-size: 24px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1e3a8a;
            --primary-light: #2563eb;
            --primary-surface: #eff6ff;
            --accent: #f59e0b;
            --accent-light: #fef3c7;
            --bg: #f8fafc;
            --bg-white: #ffffff;
            --bg-dark: #0f172a;
            --text: #1e293b;
            --text-heading: #0f172a;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-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: 1.7;
            color: var(--text);
            background-color: var(--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);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }

        input {
            font-family: inherit;
        }

        ul {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-xs);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }

        .header-inner {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            height: 100%;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            text-decoration: none;
            color: var(--text-heading);
            font-weight: 700;
            transition: opacity var(--transition);
        }
        .logo-wrap:hover {
            opacity: 0.85;
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-weight: 800;
            font-size: 17px;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 1.25rem;
            font-weight: 700;
            letter-spacing: -0.3px;
            color: var(--text-heading);
            white-space: nowrap;
        }

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

        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 15px;
            border-radius: 20px;
            font-size: 0.93rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--primary);
            background: var(--primary-surface);
        }
        .main-nav a.active {
            color: #fff;
            background: var(--primary);
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }
        .main-nav a.active:hover {
            background: var(--primary-light);
            color: #fff;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 10px 22px;
            border-radius: 24px;
            font-size: 0.93rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--accent), #f97316);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-cta:hover {
            box-shadow: var(--shadow);
            transform: translateY(-1px);
            color: #fff;
        }
        .nav-cta:active {
            transform: translateY(0);
        }

        .mobile-menu-btn {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            background: var(--bg-white);
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--text);
            transition: all var(--transition);
            flex-shrink: 0;
        }
        .mobile-menu-btn:hover {
            background: var(--primary-surface);
            border-color: var(--primary-light);
        }
        .mobile-menu-btn .icon-close {
            display: none;
        }
        .mobile-menu-btn.nav-open .icon-menu {
            display: none;
        }
        .mobile-menu-btn.nav-open .icon-close {
            display: inline;
        }

        .desktop-only {
            display: inline-flex;
        }

        @media (max-width: 1024px) {
            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 16px 20px;
                border-bottom: 2px solid var(--border);
                box-shadow: var(--shadow-lg);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                display: none;
                z-index: 999;
                max-height: 70vh;
                overflow-y: auto;
            }
            .main-nav.nav-open {
                display: flex;
            }
            .main-nav a {
                border-radius: var(--radius-sm);
                padding: 12px 16px;
                font-size: 1rem;
                justify-content: center;
                text-align: center;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .desktop-only {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .logo-text {
                font-size: 1.05rem;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 14px;
            }
            .header-inner {
                gap: 12px;
            }
            .main-nav {
                padding: 12px 14px;
                border-radius: 0 0 var(--radius) var(--radius);
            }
            .main-nav a {
                padding: 10px 14px;
                font-size: 0.93rem;
            }
        }

        /* Main */
        main {
            flex: 1;
        }

        /* Section spacing */
        .section {
            padding: 64px 0;
        }
        .section-sm {
            padding: 40px 0;
        }
        .section-lg {
            padding: 80px 0;
        }

        @media (max-width: 768px) {
            .section {
                padding: 40px 0;
            }
            .section-lg {
                padding: 52px 0;
            }
            .section-sm {
                padding: 28px 0;
            }
        }

        /* Page Banner */
        .page-banner {
            position: relative;
            padding: 80px 0;
            background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #1e40af 100%);
            overflow: hidden;
            color: #fff;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            z-index: 0;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(37, 99, 235, 0.35) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 30%, rgba(245, 158, 11, 0.15) 0%, transparent 50%);
            z-index: 0;
        }
        .page-banner .banner-content {
            position: relative;
            z-index: 1;
            max-width: 720px;
        }
        .page-banner .banner-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(6px);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 16px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -0.6px;
            line-height: 1.2;
            margin-bottom: 16px;
            color: #fff;
        }
        .page-banner .banner-desc {
            font-size: 1.1rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 24px;
        }
        .page-banner .banner-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .page-banner {
                padding: 52px 0;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner .banner-desc {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .page-banner .banner-desc {
                font-size: 0.93rem;
                line-height: 1.7;
            }
            .page-banner {
                padding: 40px 0;
            }
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 11px 24px;
            border-radius: 24px;
            font-size: 0.95rem;
            font-weight: 600;
            transition: all var(--transition);
            cursor: pointer;
            white-space: nowrap;
            justify-content: center;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }
        .btn-primary:hover {
            background: var(--primary-light);
            box-shadow: var(--shadow);
            transform: translateY(-1px);
            color: #fff;
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }
        .btn-accent:hover {
            background: #f97316;
            box-shadow: var(--shadow);
            transform: translateY(-1px);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.6);
            color: #fff;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
        }
        .btn-outline-dark {
            background: transparent;
            border: 2px solid var(--border);
            color: var(--text);
        }
        .btn-outline-dark:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-surface);
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 1.05rem;
            border-radius: 28px;
        }
        .btn-sm {
            padding: 7px 16px;
            font-size: 0.85rem;
            border-radius: 18px;
        }

        /* Cards */
        .card {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: #d4dbe8;
        }
        .card-body {
            padding: 22px 24px;
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }

        /* Stat cards */
        .stat-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition);
        }
        .stat-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -1px;
            line-height: 1;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 6px;
            font-weight: 500;
        }

        @media (max-width: 520px) {
            .stat-number {
                font-size: 2rem;
            }
        }

        /* Tags / Badges */
        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 14px;
            font-size: 0.78rem;
            font-weight: 600;
            background: var(--primary-surface);
            color: var(--primary);
            white-space: nowrap;
        }
        .tag-accent {
            background: var(--accent-light);
            color: #b45309;
        }

        /* Section headings */
        .section-heading {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-heading h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: -0.3px;
            margin-bottom: 8px;
        }
        .section-heading .subtitle {
            color: var(--text-muted);
            font-size: 1rem;
            max-width: 560px;
            margin: 0 auto;
        }

        @media (max-width: 768px) {
            .section-heading h2 {
                font-size: 1.6rem;
            }
            .section-heading {
                margin-bottom: 32px;
            }
        }

        /* Grid layouts */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* Article list */
        .article-card {
            display: flex;
            gap: 20px;
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 20px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition);
            align-items: flex-start;
        }
        .article-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-2px);
            border-color: #d4dbe8;
        }
        .article-card .article-img {
            width: 180px;
            min-width: 180px;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            border-radius: var(--radius);
            flex-shrink: 0;
        }
        .article-card .article-info {
            flex: 1;
            min-width: 0;
        }
        .article-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .article-card .article-meta {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 4px;
        }
        .article-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        @media (max-width: 640px) {
            .article-card {
                flex-direction: column;
                gap: 12px;
            }
            .article-card .article-img {
                width: 100%;
                min-width: 100%;
                aspect-ratio: 16 / 9;
            }
        }

        /* Expert quote */
        .quote-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border-left: 4px solid var(--primary);
            box-shadow: var(--shadow-xs);
            transition: all var(--transition);
            position: relative;
        }
        .quote-card:hover {
            box-shadow: var(--shadow);
        }
        .quote-card .quote-icon {
            font-size: 2rem;
            color: var(--primary-light);
            opacity: 0.4;
            margin-bottom: 8px;
        }
        .quote-card blockquote {
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text);
            font-style: italic;
            margin: 0 0 12px;
        }
        .quote-card .quote-author {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--text-heading);
        }
        .quote-card .quote-role {
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-xs);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: #d4dbe8;
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-heading);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            background: transparent;
            border: none;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            transition: transform var(--transition);
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.93rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item.open .faq-question {
            color: var(--primary);
        }
        .faq-item.open {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }

        /* CTA section */
        .cta-section {
            background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
            border-radius: var(--radius-xl);
            padding: 52px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 50% 0%, rgba(245, 158, 11, 0.2) 0%, transparent 60%);
            z-index: 0;
        }
        .cta-section>* {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 22px;
            font-size: 1rem;
        }
        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 480px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }
        .cta-form input {
            flex: 1;
            min-width: 220px;
            padding: 13px 18px;
            border-radius: 24px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 0.95rem;
            outline: none;
            transition: all var(--transition);
        }
        .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }
        .cta-form input:focus {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.18);
        }

        @media (max-width: 520px) {
            .cta-section {
                padding: 36px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .cta-form input {
                min-width: 100%;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: #cbd5e1;
            padding: 52px 0 0;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo-text {
            color: #fff;
            font-size: 1.3rem;
            display: inline-block;
            margin-bottom: 10px;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: #94a3b8;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            font-size: 0.88rem;
            color: #94a3b8;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            text-align: center;
            padding: 20px 0;
            font-size: 0.85rem;
            color: #64748b;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .footer-brand {
                grid-column: auto;
            }
        }

        /* Utility */
        .text-center {
            text-align: center;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-2 {
            margin-bottom: 8px;
        }
        .mb-4 {
            margin-bottom: 16px;
        }

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

        /* Divider */
        .divider {
            height: 1px;
            background: var(--border);
            margin: 0;
        }

        /* Highlight box */
        .highlight-box {
            background: var(--primary-surface);
            border-radius: var(--radius-lg);
            padding: 24px 28px;
            border: 1px solid #dbeafe;
        }