/* roulang page: index */
@theme {
            --color-primary: #4F46E5;
            --color-secondary: #7C3AED;
            --color-accent: #F59E0B;
            --color-ink: #111827;
            --color-muted: #6B7280;
            --color-surface: #F8FAFC;
            --color-card: #FFFFFF;
        }

:root {
            --primary: #4F46E5;
            --primary-light: #EEF2FF;
            --secondary: #7C3AED;
            --accent: #F59E0B;
            --ink: #111827;
            --muted: #6B7280;
            --surface: #F8FAFC;
            --card-bg: #FFFFFF;
            --border-color: #E5E7EB;
            --success: #10B981;
            --danger: #EF4444;
            --radius-lg: 1.5rem;
            --radius-md: 1rem;
            --radius-sm: 0.75rem;
            --shadow-sm: 0 2px 8px rgba(79, 70, 229, 0.06);
            --shadow-md: 0 4px 16px rgba(79, 70, 229, 0.1);
            --shadow-lg: 0 12px 32px rgba(79, 70, 229, 0.14);
            --shadow-amber: 0 4px 16px rgba(245, 158, 11, 0.12);
            --transition-base: all .3s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--ink);
            background: var(--surface);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition-base);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        .container-custom {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (min-width: 768px) {
            .container-custom {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        .section-padding {
            padding: 64px 0;
        }
        @media (min-width: 768px) {
            .section-padding {
                padding: 96px 0;
            }
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(79, 70, 229, 0.08);
            border-radius: 999px;
            padding: 4px 14px;
            margin-bottom: 12px;
            letter-spacing: .5px;
        }
        .section-title {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--ink);
            margin-bottom: 8px;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 36px;
            }
        }
        .section-divider {
            width: 56px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 3px;
            margin: 16px 0 32px;
        }
        .text-muted {
            color: var(--muted);
        }

        /* Navbar */
        .navbar {
            background: rgba(255, 255, 255, .9);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(229, 231, 235, .8);
            position: sticky;
            top: 0;
            z-index: 50;
        }
        .navbar .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            white-space: nowrap;
        }
        .nav-logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
            font-weight: 700;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(79, 70, 229, .25);
        }
        .nav-links {
            display: none;
            align-items: center;
            gap: 4px;
        }
        @media (min-width: 992px) {
            .nav-links {
                display: flex;
            }
        }
        .nav-link {
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 500;
            color: #4B5563;
            position: relative;
            transition: var(--transition-base);
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(79, 70, 229, .05);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 2px;
        }
        .nav-cta {
            display: none;
            margin-left: 8px;
        }
        @media (min-width: 768px) {
            .nav-cta {
                display: inline-flex;
            }
        }
        .menu-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            border: 1px solid var(--border-color);
            background: #fff;
            font-size: 18px;
            color: var(--ink);
            transition: var(--transition-base);
        }
        .menu-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        @media (min-width: 992px) {
            .menu-toggle {
                display: none;
            }
        }
        .mobile-menu {
            display: none;
            background: #fff;
            border-top: 1px solid var(--border-color);
            padding: 16px 24px 24px;
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--ink);
        }
        .mobile-menu a:hover {
            background: rgba(79, 70, 229, .05);
            color: var(--primary);
        }
        .mobile-menu a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .mobile-menu .nav-cta {
            display: flex;
            margin: 12px 16px 4px;
            justify-content: center;
        }

        /* Buttons */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #4F46E5, #7C3AED);
            color: #fff !important;
            border-radius: 12px;
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            box-shadow: 0 4px 16px rgba(79, 70, 229, .3);
            transition: var(--transition-base);
        }
        .btn-primary:hover {
            box-shadow: 0 6px 24px rgba(79, 70, 229, .4);
            filter: brightness(1.08);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: scale(.97);
        }
        .btn-primary:focus {
            outline: none;
            ring: 2px solid var(--primary);
            ring-offset: 2px;
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: 2px solid rgba(79, 70, 229, .25);
            background: #fff;
            color: var(--primary) !important;
            border-radius: 12px;
            padding: 11px 24px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition-base);
        }
        .btn-ghost:hover {
            border-color: var(--primary);
            background: rgba(79, 70, 229, .05);
        }
        .btn-ghost:active {
            transform: scale(.97);
        }
        .btn-download {
            position: relative;
            padding: 16px 32px;
            font-size: 16px;
            border-radius: 14px;
        }
        .btn-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: #fff;
            color: var(--ink) !important;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition-base);
        }
        .btn-light:hover {
            border-color: var(--primary);
            color: var(--primary) !important;
            box-shadow: var(--shadow-sm);
        }
        .btn-light i {
            transition: transform .3s ease;
        }
        .btn-light:hover i {
            transform: translateY(-2px);
        }

        /* Hero */
        .hero-wrap {
            position: relative;
            background: linear-gradient(135deg, #EEF2FF 0%, #F5F3FF 50%, #FEF3C7 100%);
            overflow: hidden;
            padding: 72px 0 80px;
        }
        @media (min-width: 768px) {
            .hero-wrap {
                padding: 96px 0 120px;
            }
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 48px;
            align-items: center;
        }
        @media (min-width: 992px) {
            .hero-grid {
                grid-template-columns: 58% 42%;
            }
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, #F59E0B, #F97316);
            color: #fff;
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 12px;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(245, 158, 11, .3);
            margin-bottom: 18px;
            letter-spacing: .3px;
        }
        .hero-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--ink);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        @media (min-width: 768px) {
            .hero-title {
                font-size: 48px;
            }
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, #4F46E5, #7C3AED);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: 16px;
            line-height: 1.8;
            color: #4B5563;
            margin-bottom: 28px;
            max-width: 460px;
        }
        @media (min-width: 768px) {
            .hero-sub {
                font-size: 18px;
            }
        }
        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 36px;
        }
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 14px;
            max-width: 420px;
        }
        @media (min-width: 640px) {
            .hero-stats {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .hero-stat {
            background: rgba(255, 255, 255, .7);
            border: 1px solid rgba(255, 255, 255, .8);
            backdrop-filter: blur(8px);
            border-radius: 16px;
            padding: 14px 16px;
            text-align: left;
            box-shadow: 0 4px 16px rgba(79, 70, 229, .08);
            transition: var(--transition-base);
        }
        .hero-stat:hover {
            box-shadow: 0 6px 20px rgba(79, 70, 229, .12);
            transform: translateY(-2px);
        }
        .hero-stat .stat-num {
            font-size: 22px;
            font-weight: 700;
            color: var(--ink);
            font-variant-numeric: tabular-nums;
            line-height: 1.3;
        }
        .hero-stat .stat-label {
            font-size: 12px;
            color: var(--muted);
            margin-top: 2px;
        }
        .hero-stat .stat-icon {
            color: var(--accent);
            margin-right: 4px;
        }
        .hero-visual {
            position: relative;
        }
        .hero-visual-img {
            border-radius: 24px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, .7);
            box-shadow: 0 20px 60px rgba(79, 70, 229, .2);
        }
        .hero-visual-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .hero-float-card {
            position: absolute;
            bottom: -20px;
            left: 20px;
            right: 20px;
            background: #fff;
            border-radius: 16px;
            padding: 14px 18px;
            box-shadow: var(--shadow-lg);
            display: flex;
            align-items: center;
            gap: 12px;
            border: 1px solid rgba(229, 231, 235, .8);
        }
        .hero-float-card .float-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(79, 70, 229, .1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
            flex-shrink: 0;
        }
        .hero-float-card .float-text {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.5;
        }
        .hero-float-card .float-text strong {
            color: var(--ink);
            font-weight: 600;
        }

        /* Carousel */
        .carousel-section {
            background: #fff;
        }
        .carousel-wrap {
            position: relative;
        }
        .carousel-viewport {
            overflow: hidden;
            border-radius: 24px;
        }
        .carousel-track {
            display: flex;
            transition: transform .6s ease;
        }
        .carousel-slide {
            min-width: 100%;
            flex-shrink: 0;
            border-radius: 24px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            background: #fff;
            box-shadow: var(--shadow-sm);
        }
        .carousel-slide-inner {
            display: grid;
            grid-template-columns: 1fr;
        }
        @media (min-width: 768px) {
            .carousel-slide-inner {
                grid-template-columns: 1.2fr 1fr;
            }
        }
        .carousel-slide-img {
            position: relative;
            min-height: 260px;
            overflow: hidden;
        }
        .carousel-slide-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }
        .carousel-slide-content {
            padding: 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 14px;
        }
        .carousel-slide-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--ink);
        }
        .carousel-slide-content p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--muted);
            margin-bottom: 8px;
        }
        .carousel-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition-base);
        }
        .carousel-link:hover {
            gap: 10px;
        }
        .carousel-nav {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            margin-top: 28px;
        }
        .carousel-btn {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            border: 1px solid var(--border-color);
            background: #fff;
            color: var(--ink);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition-base);
            font-size: 16px;
        }
        .carousel-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .carousel-dots {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .carousel-dot {
            width: 8px;
            height: 8px;
            border-radius: 999px;
            background: #D1D5DB;
            border: none;
            padding: 0;
            transition: all .3s ease;
        }
        .carousel-dot.active {
            width: 32px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
        }

        /* Environment Cards */
        .env-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }
        @media (min-width: 640px) {
            .env-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .env-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .env-card {
            background: #fff;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            padding: 28px 24px;
            transition: var(--transition-base);
            box-shadow: var(--shadow-sm);
        }
        .env-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: rgba(79, 70, 229, .2);
        }
        .env-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 18px;
        }
        .env-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 10px;
        }
        .env-card p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
        }

        /* Testimonials */
        .testimonial-section {
            background: linear-gradient(180deg, #F8FAFC 0%, #F5F3FF 100%);
        }
        .testimonial-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }
        @media (min-width: 768px) {
            .testimonial-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .testimonial-card {
            background: #fff;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .testimonial-stars {
            color: var(--accent);
            font-size: 14px;
            letter-spacing: 2px;
        }
        .testimonial-text {
            font-size: 15px;
            line-height: 1.8;
            color: #374151;
        }
        .testimonial-user {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: auto;
            padding-top: 12px;
            border-top: 1px solid #F3F4F6;
        }
        .testimonial-avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 15px;
            flex-shrink: 0;
        }
        .testimonial-user .user-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--ink);
        }
        .testimonial-user .user-role {
            font-size: 12px;
            color: var(--muted);
        }

        /* Download Section */
        .download-section {
            background: #fff;
            text-align: center;
        }
        .download-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 18px;
            max-width: 680px;
            margin: 40px auto 0;
        }
        @media (min-width: 640px) {
            .download-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .download-card {
            background: var(--surface);
            border: 1px solid var(--border-color);
            border-radius: 18px;
            padding: 28px 20px;
            text-align: center;
            transition: var(--transition-base);
        }
        .download-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .download-icon {
            font-size: 32px;
            color: var(--primary);
            margin-bottom: 14px;
        }
        .download-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 6px;
        }
        .download-card p {
            font-size: 13px;
            color: var(--muted);
        }
        .download-note {
            font-size: 12px;
            color: #9CA3AF;
            margin-top: 24px;
        }

        /* News / CMS */
        .news-section {
            background: var(--surface);
        }
        .news-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 8px;
        }
        .news-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
            margin-top: 32px;
        }
        @media (min-width: 768px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        .news-card {
            background: #fff;
            border-radius: 18px;
            border: 1px solid var(--border-color);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition-base);
            display: block;
        }
        .news-card:hover {
            box-shadow: var(--shadow-lg);
            border-color: rgba(79, 70, 229, .25);
            transform: translateY(-4px);
        }
        .news-card:hover h3 {
            color: var(--primary);
        }
        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            margin-bottom: 14px;
        }
        .news-date {
            font-size: 12px;
            color: var(--muted);
            font-variant-numeric: tabular-nums;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .news-cat {
            font-size: 12px;
            font-weight: 500;
            color: var(--primary);
            background: rgba(79, 70, 229, .08);
            border-radius: 999px;
            padding: 3px 12px;
        }
        .news-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.5;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: var(--transition-base);
        }
        .news-card .news-excerpt {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
        }
        .news-read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }
        .news-read-more i {
            transition: transform .3s ease;
        }
        .news-card:hover .news-read-more i {
            transform: translateX(4px);
        }
        .view-all-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            padding: 10px 18px;
            border-radius: 10px;
            border: 1px solid rgba(79, 70, 229, .2);
            transition: var(--transition-base);
        }
        .view-all-link:hover {
            background: rgba(79, 70, 229, .05);
            gap: 12px;
        }
        .empty-state {
            grid-column: 1 / -1;
            border: 2px dashed #D1D5DB;
            border-radius: 20px;
            padding: 60px 24px;
            text-align: center;
            background: #fff;
        }
        .empty-state i {
            font-size: 48px;
            color: #D1D5DB;
            margin-bottom: 16px;
            display: inline-block;
        }
        .empty-state p {
            font-size: 15px;
            color: var(--muted);
            margin-bottom: 20px;
        }
        .refresh-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1px solid var(--border-color);
            background: #fff;
            color: var(--ink);
            padding: 10px 20px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition-base);
        }
        .refresh-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        /* FAQ */
        .faq-section {
            background: #fff;
        }
        .faq-wrap {
            max-width: 840px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition-base);
        }
        .faq-item:hover {
            border-color: rgba(79, 70, 229, .3);
            box-shadow: var(--shadow-sm);
        }
        .faq-item.open {
            border-color: rgba(79, 70, 229, .3);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            background: transparent;
            border: none;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            transition: var(--transition-base);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(79, 70, 229, .1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 14px;
            flex-shrink: 0;
            transition: transform .3s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
        }
        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--muted);
            border-top: 1px solid #F3F4F6;
            padding-top: 16px;
        }

        /* CTA Banner */
        .cta-banner {
            background: linear-gradient(135deg, #4F46E5, #7C3AED);
            border-radius: 28px;
            padding: 48px 32px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        @media (min-width: 768px) {
            .cta-banner {
                padding: 64px 48px;
            }
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .08);
            top: -120px;
            right: -80px;
        }
        .cta-banner::after {
            content: '';
            position: absolute;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .06);
            bottom: -80px;
            left: -40px;
        }
        .cta-banner h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        @media (min-width: 768px) {
            .cta-banner h2 {
                font-size: 36px;
            }
        }
        .cta-banner p {
            font-size: 15px;
            line-height: 1.7;
            opacity: .9;
            max-width: 520px;
            margin: 0 auto 28px;
            position: relative;
            z-index: 1;
        }
        .cta-btn-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--primary) !important;
            border-radius: 12px;
            padding: 14px 32px;
            font-size: 15px;
            font-weight: 700;
            box-shadow: 0 8px 24px rgba(0, 0, 0, .15);
            transition: var(--transition-base);
            position: relative;
            z-index: 1;
        }
        .cta-btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, .2);
        }
        .cta-section {
            background: var(--surface);
            padding-bottom: 80px;
        }
        @media (min-width: 768px) {
            .cta-section {
                padding-bottom: 96px;
            }
        }

        /* Footer */
        .site-footer {
            background: #111827;
            color: #9CA3AF;
            padding-top: 64px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            margin-bottom: 48px;
        }
        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr 1fr;
            }
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 20px;
            max-width: 280px;
        }
        .footer-social {
            display: flex;
            gap: 10px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: #1F2937;
            color: #9CA3AF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: var(--transition-base);
        }
        .footer-social a:hover {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff !important;
            transform: translateY(-2px);
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: #9CA3AF;
            transition: var(--transition-base);
        }
        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-contact-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .footer-contact-item i {
            color: var(--primary);
            margin-top: 4px;
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid #1F2937;
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: #6B7280;
        }

        /* Additional */
        .icn-bg-indigo {
            background: rgba(79, 70, 229, .1);
            color: var(--primary);
        }
        .icn-bg-violet {
            background: rgba(124, 58, 237, .1);
            color: var(--secondary);
        }
        .icn-bg-amber {
            background: rgba(245, 158, 11, .1);
            color: var(--accent);
        }
        .icn-bg-green {
            background: rgba(16, 185, 129, .1);
            color: var(--success);
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .focus\:outline-none:focus,
        button:focus {
            outline: none;
        }
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

/* roulang page: category1 */
@layer base {
            * {
                box-sizing: border-box;
                margin: 0;
                padding: 0;
            }
            html {
                scroll-behavior: smooth;
            }
            body {
                font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
                background-color: #F8FAFC;
                color: #111827;
                line-height: 1.75;
                -webkit-font-smoothing: antialiased;
            }
            a {
                color: inherit;
                text-decoration: none;
            }
            img {
                max-width: 100%;
                display: block;
            }
            ul,
            ol {
                list-style: none;
            }
            button {
                cursor: pointer;
                background: none;
                border: none;
                font-family: inherit;
            }
            input,
            textarea {
                font-family: inherit;
            }
        }

        @layer components {
            .container-custom {
                width: 100%;
                max-width: 1200px;
                margin-left: auto;
                margin-right: auto;
                padding-left: 1.25rem;
                padding-right: 1.25rem;
            }

            .btn-primary {
                display: inline-flex;
                align-items: center;
                justify-content: center;
                gap: 0.5rem;
                background-color: #4F46E5;
                color: #ffffff;
                border-radius: 0.75rem;
                padding: 0.75rem 1.5rem;
                font-weight: 600;
                box-shadow: 0 10px 20px -8px rgba(79, 70, 229, 0.45);
                transition: all 0.3s ease;
                font-size: 0.95rem;
            }
            .btn-primary:hover {
                background-color: #7C3AED;
                box-shadow: 0 14px 28px -8px rgba(124, 58, 237, 0.5);
                transform: translateY(-1px);
            }
            .btn-primary:active {
                transform: scale(0.96);
            }
            .btn-primary:focus {
                outline: none;
                box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.3), 0 10px 20px -8px rgba(79, 70, 229, 0.45);
            }

            .btn-ghost {
                display: inline-flex;
                align-items: center;
                justify-content: center;
                gap: 0.5rem;
                border: 2px solid #C7D2FE;
                background-color: #ffffff;
                color: #4F46E5;
                border-radius: 0.75rem;
                padding: 0.7rem 1.4rem;
                font-weight: 600;
                transition: all 0.3s ease;
                font-size: 0.95rem;
            }
            .btn-ghost:hover {
                border-color: #A5B4FC;
                background-color: #EEF2FF;
            }
            .btn-ghost:active {
                transform: scale(0.96);
            }
            .btn-ghost:focus {
                outline: none;
                box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.25);
            }

            .section-tag {
                display: inline-block;
                font-size: 0.75rem;
                font-weight: 600;
                letter-spacing: 0.08em;
                color: #4F46E5;
                background: rgba(79, 70, 229, 0.08);
                border: 1px solid rgba(79, 70, 229, 0.15);
                border-radius: 9999px;
                padding: 0.25rem 0.75rem;
                margin-bottom: 0.75rem;
            }

            .section-title {
                font-size: 1.625rem;
                line-height: 1.3;
                font-weight: 700;
                color: #111827;
                margin-bottom: 0.75rem;
            }

            .section-subtitle {
                color: #6B7280;
                font-size: 1rem;
                line-height: 1.75;
                max-width: 640px;
            }

            .section-divider {
                width: 56px;
                height: 3px;
                border-radius: 9999px;
                background: linear-gradient(90deg, #4F46E5, #7C3AED, #F59E0B);
                margin-top: 0.5rem;
                margin-bottom: 1.5rem;
            }

            .card {
                background: #ffffff;
                border: 1px solid #E5E7EB;
                border-radius: 1.25rem;
                box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
                transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            }
            .card:hover {
                transform: translateY(-4px);
                box-shadow: 0 20px 30px -12px rgba(79, 70, 229, 0.12);
                border-color: #E0E7FF;
            }
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid #E5E7EB;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            gap: 1rem;
        }

        .nav-logo {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.15rem;
            font-weight: 700;
            color: #111827;
            flex-shrink: 0;
        }

        .nav-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 0.65rem;
            background: linear-gradient(135deg, #4F46E5, #7C3AED);
            color: #ffffff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            font-weight: 800;
            box-shadow: 0 6px 14px -6px rgba(79, 70, 229, 0.5);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            margin-left: 1rem;
        }

        .nav-link {
            position: relative;
            font-size: 0.95rem;
            font-weight: 500;
            color: #4B5563;
            padding: 0.5rem 0.1rem;
            transition: color 0.3s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: #4F46E5;
        }
        .nav-link.active {
            color: #4F46E5;
            font-weight: 600;
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            border-radius: 9999px;
            background: linear-gradient(90deg, #4F46E5, #7C3AED);
        }

        .nav-cta {
            margin-left: auto;
            flex-shrink: 0;
        }
        .nav-cta .btn-primary {
            padding: 0.55rem 1.15rem;
            font-size: 0.9rem;
            border-radius: 0.7rem;
        }

        .mobile-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 0.65rem;
            border: 1px solid #E5E7EB;
            background: #ffffff;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #111827;
            transition: all 0.3s ease;
        }
        .mobile-toggle:hover {
            background: #EEF2FF;
            color: #4F46E5;
        }

        .category-hero {
            position: relative;
            overflow: hidden;
            background: linear-gradient(135deg, #EEF2FF 0%, #F5F3FF 55%, #FEF3C7 100%);
            padding: 5rem 0;
        }
        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            pointer-events: none;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: linear-gradient(90deg, #F59E0B, #F97316);
            color: #ffffff;
            border-radius: 9999px;
            padding: 0.25rem 0.9rem;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            box-shadow: 0 6px 16px -6px rgba(245, 158, 11, 0.5);
            margin-bottom: 1.25rem;
        }

        .hero-title {
            font-size: 2.4rem;
            line-height: 1.2;
            font-weight: 700;
            color: #111827;
            margin-bottom: 1rem;
        }

        .hero-desc {
            font-size: 1.06rem;
            color: #4B5563;
            max-width: 620px;
            line-height: 1.8;
            margin-bottom: 1.75rem;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 0.9rem;
            margin-bottom: 2.5rem;
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1rem;
            max-width: 560px;
        }

        .stat-badge {
            display: flex;
            align-items: center;
            gap: 0.7rem;
            background: rgba(255, 255, 255, 0.75);
            border: 1px solid #FDE68A;
            border-radius: 9999px;
            padding: 0.55rem 1rem;
            box-shadow: 0 6px 16px -8px rgba(245, 158, 11, 0.25);
            backdrop-filter: blur(6px);
        }
        .stat-badge .stat-num {
            font-size: 1.5rem;
            font-weight: 700;
            color: #111827;
            font-variant-numeric: tabular-nums;
        }
        .stat-badge .stat-label {
            font-size: 0.8rem;
            color: #6B7280;
            line-height: 1.2;
        }

        .feature-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
            padding: 5rem 0;
        }

        .feature-text .feature-list {
            margin-top: 1.25rem;
        }
        .feature-text .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 0.65rem;
            padding: 0.4rem 0;
            color: #4B5563;
        }
        .feature-text .feature-list li i {
            color: #4F46E5;
            margin-top: 0.35rem;
            font-size: 0.85rem;
        }

        .feature-image {
            position: relative;
            border-radius: 1.5rem;
            overflow: hidden;
            box-shadow: 0 24px 50px -20px rgba(79, 70, 229, 0.25);
            border: 1px solid #E0E7FF;
        }
        .feature-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .feature-image .image-float-card {
            position: absolute;
            left: 1rem;
            bottom: 1rem;
            right: 1rem;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(8px);
            border-radius: 0.9rem;
            padding: 0.75rem 1rem;
            border: 1px solid rgba(255, 255, 255, 0.6);
            box-shadow: 0 8px 18px -8px rgba(0, 0, 0, 0.12);
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .feature-image .image-float-card i {
            color: #F59E0B;
            font-size: 1rem;
        }
        .feature-image .image-float-card span {
            font-size: 0.85rem;
            color: #111827;
            font-weight: 500;
        }

        .cards-section {
            background: #ffffff;
            border-top: 1px solid #F1F5F9;
            border-bottom: 1px solid #F1F5F9;
            padding: 5rem 0;
        }

        .cards-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
            margin-top: 2rem;
        }

        .service-card {
            position: relative;
            background: #ffffff;
            border: 1px solid #E5E7EB;
            border-radius: 1.25rem;
            padding: 1.75rem 1.5rem;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 35px -14px rgba(79, 70, 229, 0.14);
            border-color: #E0E7FF;
        }
        .service-card .card-index {
            font-size: 0.75rem;
            font-weight: 700;
            color: #A5B4FC;
            letter-spacing: 0.08em;
            margin-bottom: 0.75rem;
        }
        .service-card .card-icon {
            width: 44px;
            height: 44px;
            border-radius: 0.75rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.05rem;
            background: #EEF2FF;
            color: #4F46E5;
            margin-bottom: 1rem;
        }
        .service-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #111827;
            margin-bottom: 0.5rem;
        }
        .service-card p {
            font-size: 0.9rem;
            color: #6B7280;
            line-height: 1.65;
        }

        .process-section {
            padding: 5rem 0;
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .step-item {
            background: #ffffff;
            border: 1px solid #E5E7EB;
            border-radius: 1.25rem;
            padding: 2rem 1.5rem;
            text-align: center;
            position: relative;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
            transition: all 0.3s ease;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: 0 18px 30px -14px rgba(79, 70, 229, 0.14);
        }
        .step-item .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: linear-gradient(135deg, #EEF2FF, #F5F3FF);
            color: #4F46E5;
            font-weight: 800;
            font-size: 1rem;
            margin-bottom: 1rem;
        }
        .step-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #111827;
            margin-bottom: 0.5rem;
        }
        .step-item p {
            font-size: 0.9rem;
            color: #6B7280;
            line-height: 1.65;
        }

        .values-section {
            background: #111827;
            padding: 4.5rem 0;
            border-radius: 0;
            position: relative;
            overflow: hidden;
        }
        .values-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
            pointer-events: none;
        }

        .values-header {
            position: relative;
            z-index: 2;
            text-align: center;
            margin-bottom: 2.5rem;
        }
        .values-header .section-tag {
            background: rgba(245, 158, 11, 0.15);
            border-color: rgba(245, 158, 11, 0.2);
            color: #FBBF24;
        }
        .values-header h2 {
            color: #ffffff;
            font-size: 1.75rem;
            font-weight: 700;
        }

        .values-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1rem;
        }

        .value-item {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 1rem;
            padding: 1.5rem 1rem;
            text-align: center;
            backdrop-filter: blur(6px);
            transition: background 0.3s ease, border-color 0.3s ease;
        }
        .value-item:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(245, 158, 11, 0.4);
        }
        .value-item .value-num {
            font-size: 2rem;
            font-weight: 800;
            color: #FBBF24;
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }
        .value-item .value-label {
            font-size: 0.85rem;
            color: #D1D5DB;
            margin-top: 0.3rem;
        }

        .faq-section {
            padding: 5rem 0;
        }

        .faq-list {
            max-width: 860px;
            margin-top: 1.75rem;
        }

        .faq-item {
            background: #ffffff;
            border: 1px solid #E5E7EB;
            border-radius: 1rem;
            margin-bottom: 0.85rem;
            overflow: hidden;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .faq-item.open {
            border-color: #C7D2FE;
            box-shadow: 0 8px 20px -14px rgba(79, 70, 229, 0.2);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.1rem 1.25rem;
            font-size: 0.98rem;
            font-weight: 600;
            color: #111827;
            transition: color 0.3s ease;
        }
        .faq-question:hover {
            color: #4F46E5;
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 6px;
            background: #EEF2FF;
            color: #4F46E5;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            transition: transform 0.3s ease, background 0.3s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: #4F46E5;
            color: #ffffff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            padding: 0 1.25rem;
            color: #6B7280;
            font-size: 0.93rem;
            line-height: 1.75;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 320px;
            padding: 0 1.25rem 1.25rem;
        }

        .link-block-section {
            padding: 0 0 5rem;
        }

        .link-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.25rem;
            margin-top: 2rem;
        }

        .link-card {
            display: flex;
            align-items: stretch;
            background: #ffffff;
            border: 1px solid #E5E7EB;
            border-radius: 1.25rem;
            overflow: hidden;
            box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .link-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 18px 32px -14px rgba(79, 70, 229, 0.14);
            border-color: #E0E7FF;
        }
        .link-card .link-thumb {
            width: 112px;
            flex-shrink: 0;
            overflow: hidden;
            background: #EEF2FF;
        }
        .link-card .link-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .link-card .link-body {
            padding: 1.1rem 1.2rem;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .link-card .link-body h3 {
            font-size: 1rem;
            font-weight: 700;
            color: #111827;
            margin-bottom: 0.3rem;
        }
        .link-card .link-body p {
            font-size: 0.85rem;
            color: #6B7280;
            line-height: 1.55;
        }
        .link-card .link-arrow {
            margin-top: 0.45rem;
            font-size: 0.85rem;
            color: #4F46E5;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }

        .cta-section {
            position: relative;
            overflow: hidden;
            background: linear-gradient(135deg, #4F46E5, #7C3AED);
            padding: 4.5rem 0;
            text-align: center;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
        }
        .cta-inner h2 {
            color: #ffffff;
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, 0.85);
            max-width: 540px;
            margin: 0 auto 1.75rem;
            font-size: 0.98rem;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.9rem;
        }
        .btn-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: #ffffff;
            color: #4F46E5;
            border-radius: 0.75rem;
            padding: 0.75rem 1.6rem;
            font-weight: 700;
            box-shadow: 0 10px 20px -8px rgba(0, 0, 0, 0.25);
            transition: all 0.3s ease;
        }
        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 28px -10px rgba(0, 0, 0, 0.3);
        }
        .btn-white:active {
            transform: scale(0.96);
        }
        .btn-white:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.4);
        }
        .btn-outline-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            border: 2px solid rgba(255, 255, 255, 0.7);
            color: #ffffff;
            border-radius: 0.75rem;
            padding: 0.7rem 1.5rem;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #ffffff;
        }
        .btn-outline-white:active {
            transform: scale(0.96);
        }
        .btn-outline-white:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.35);
        }

        .site-footer {
            background: #111827;
            color: #9CA3AF;
            padding: 4rem 0 1.5rem;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.1fr;
            gap: 2rem;
            margin-bottom: 2.5rem;
        }
        .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.05rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 0.75rem;
        }
        .footer-brand p {
            color: #9CA3AF;
            line-height: 1.7;
            margin-bottom: 1.1rem;
        }
        .footer-social {
            display: flex;
            gap: 0.6rem;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: #ffffff;
            color: #111827;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            transition: all 0.3s ease;
        }
        .footer-social a:hover {
            background: linear-gradient(135deg, #4F46E5, #7C3AED);
            color: #ffffff;
            transform: translateY(-2px);
        }
        .footer-col h4 {
            color: #ffffff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }
        .footer-col ul li {
            margin-bottom: 0.5rem;
        }
        .footer-col ul a {
            color: #9CA3AF;
            transition: color 0.3s ease;
        }
        .footer-col ul a:hover {
            color: #ffffff;
        }
        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 0.6rem;
            color: #9CA3AF;
        }
        .footer-contact-item i {
            width: 20px;
            color: #6B7280;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            text-align: center;
            color: #6B7280;
            font-size: 0.82rem;
        }

        @media (max-width: 1024px) {
            .nav-links {
                gap: 1rem;
            }
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .values-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.8rem;
            }
            .link-cards {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .link-card .link-thumb {
                width: 90px;
            }
        }

        @media (max-width: 768px) {
            .mobile-toggle {
                display: inline-flex;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: #ffffff;
                flex-direction: column;
                align-items: flex-start;
                padding: 1rem 1.25rem;
                gap: 0.4rem;
                border-bottom: 1px solid #E5E7EB;
                box-shadow: 0 18px 30px -12px rgba(0, 0, 0, 0.12);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-link {
                width: 100%;
                padding: 0.7rem 0;
                border-bottom: 1px solid #F3F4F6;
            }
            .nav-link.active::after {
                display: none;
            }
            .nav-link.active {
                color: #4F46E5;
                padding-left: 0.5rem;
            }
            .nav-cta {
                display: none;
            }
            .category-hero {
                padding: 3.5rem 0;
            }
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-stats {
                grid-template-columns: repeat(3, 1fr);
                gap: 0.5rem;
            }
            .stat-badge {
                padding: 0.45rem 0.7rem;
                flex-direction: column;
                gap: 0.1rem;
                text-align: center;
            }
            .stat-badge .stat-num {
                font-size: 1.2rem;
            }
            .stat-badge .stat-label {
                font-size: 0.72rem;
            }
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
                padding: 3.5rem 0;
            }
            .cards-section {
                padding: 3.5rem 0;
            }
            .process-section {
                padding: 3.5rem 0;
            }
            .process-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .values-section {
                padding: 3.5rem 0;
            }
            .faq-section {
                padding: 3.5rem 0;
            }
            .cta-section {
                padding: 3.5rem 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .nav-logo span:last-child {
                font-size: 1rem;
            }
            .hero-title {
                font-size: 1.65rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-ghost {
                width: 100%;
            }
            .hero-stats {
                grid-template-columns: 1fr 1fr;
            }
            .cards-grid {
                grid-template-columns: 1fr;
            }
            .values-grid {
                grid-template-columns: 1fr 1fr;
            }
            .value-item .value-num {
                font-size: 1.6rem;
            }
            .footer-contact-item {
                font-size: 0.85rem;
            }
        }

/* roulang page: article */
@theme {
            --color-primary: #4F46E5;
            --color-secondary: #7C3AED;
            --color-accent: #F59E0B;
        }

:root {
            --primary: #4F46E5;
            --primary-dark: #4338CA;
            --secondary: #7C3AED;
            --accent: #F59E0B;
            --text-main: #111827;
            --text-sub: #6B7280;
            --bg-page: #F8FAFC;
            --bg-card: #FFFFFF;
            --border: #E5E7EB;
            --border-light: #F3F4F6;
            --success: #10B981;
            --danger: #EF4444;
            --radius-xl: 1.5rem;
            --radius-lg: 1rem;
            --radius-md: 0.75rem;
            --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 16px 40px rgba(79, 70, 229, 0.12);
            --font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            color: var(--text-main);
            background: var(--bg-page);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

        ul,
        ol {
            list-style: none;
        }

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

        input,
        textarea {
            font-family: inherit;
        }

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

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

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

        .nav-logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            border-radius: 12px;
            font-weight: 800;
            font-size: 18px;
            letter-spacing: -1px;
            box-shadow: 0 6px 16px rgba(79, 70, 229, 0.3);
        }

        .nav-logo-text {
            font-size: 19px;
            font-weight: 700;
            color: var(--text-main);
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            position: relative;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-sub);
            border-radius: 10px;
            transition: color 0.2s ease, background 0.2s ease;
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(79, 70, 229, 0.05);
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid var(--border);
            color: var(--text-main);
            font-size: 18px;
            transition: background 0.2s ease;
        }

        .nav-toggle:hover {
            background: var(--border-light);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: all 0.3s ease;
            border: 2px solid transparent;
            outline: none;
        }

        .btn:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.25);
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            box-shadow: 0 8px 20px rgba(79, 70, 229, 0.25);
        }

        .btn-primary:hover {
            filter: brightness(1.08);
            transform: translateY(-1px);
            box-shadow: 0 12px 28px rgba(79, 70, 229, 0.3);
        }

        .btn-primary:active {
            transform: scale(0.97);
        }

        .btn-ghost {
            background: #fff;
            border-color: #c7d2fe;
            color: var(--primary);
        }

        .btn-ghost:hover {
            background: #eef2ff;
            border-color: var(--primary);
            transform: translateY(-1px);
        }

        .btn-ghost:active {
            transform: scale(0.97);
        }

        .btn-nav {
            padding: 9px 20px;
            font-size: 14px;
            border-radius: 12px;
            white-space: nowrap;
        }

        /* ===== Article Banner / Breadcrumb ===== */
        .article-banner {
            position: relative;
            padding: 30px 0;
            background-color: var(--bg-page);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--border-light);
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(248, 250, 252, 0.92), rgba(255, 255, 255, 0.82));
        }

        .article-banner .container-custom {
            position: relative;
            z-index: 1;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--text-sub);
        }

        .breadcrumb a {
            color: var(--text-sub);
            transition: color 0.2s ease;
        }

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

        .breadcrumb .sep {
            color: #c0c4cc;
            font-size: 15px;
        }

        .breadcrumb .current {
            color: var(--text-main);
            font-weight: 500;
            max-width: 320px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ===== Article Section ===== */
        .article-section {
            padding: 48px 0 64px;
        }

        .article-wrap {
            max-width: 46rem;
            margin: 0 auto;
        }

        .article-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-xl);
            padding: 40px 48px;
            box-shadow: var(--shadow-card);
        }

        .article-header {
            margin-bottom: 32px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border-light);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 14px;
        }

        .article-category {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(79, 70, 229, 0.08);
            color: var(--primary);
            border: 1px solid rgba(79, 70, 229, 0.15);
            border-radius: 999px;
            padding: 4px 14px;
            font-size: 13px;
            font-weight: 600;
        }

        .article-header h1 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px;
            font-size: 14px;
            color: var(--text-sub);
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .meta-item i {
            color: #a0a8b8;
            font-size: 14px;
        }

        /* ===== Article Body / Prose ===== */
        .article-body {
            font-size: 16px;
            line-height: 1.9;
            color: #374151;
            word-break: break-word;
        }

        .article-body p {
            margin-bottom: 1.25rem;
        }

        .article-body h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 2rem 0 1rem;
            line-height: 1.4;
        }

        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text-main);
            margin: 1.5rem 0 0.75rem;
            line-height: 1.45;
        }

        .article-body h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-main);
            margin: 1.25rem 0 0.625rem;
        }

        .article-body ul {
            list-style: disc;
            padding-left: 1.5rem;
            margin-bottom: 1.25rem;
        }

        .article-body ol {
            list-style: decimal;
            padding-left: 1.5rem;
            margin-bottom: 1.25rem;
        }

        .article-body li {
            margin-bottom: 0.375rem;
            padding-left: 0.25rem;
        }

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: #f5f3ff;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            padding: 1rem 1.25rem;
            margin: 1.5rem 0;
            color: #4b5563;
        }

        .article-body img {
            border-radius: var(--radius-lg);
            margin: 1.5rem 0;
            box-shadow: var(--shadow-card);
        }

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 2px;
            text-decoration-color: rgba(79, 70, 229, 0.3);
            transition: text-decoration-color 0.2s ease;
        }

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

        .article-body code {
            background: #f3f4f6;
            border: 1px solid #e5e7eb;
            padding: 0.15em 0.45em;
            border-radius: 6px;
            font-size: 0.9em;
            font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
            color: #dc2626;
        }

        .article-body pre {
            background: #1f2937;
            color: #f9fafb;
            padding: 1.25rem;
            border-radius: var(--radius-lg);
            overflow-x: auto;
            margin: 1.5rem 0;
            line-height: 1.7;
        }

        .article-body pre code {
            background: transparent;
            border: none;
            color: inherit;
            padding: 0;
            font-size: 14px;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 15px;
        }

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

        .article-body th {
            background: #f8fafc;
            font-weight: 600;
        }

        .article-body hr {
            border: none;
            height: 1px;
            background: var(--border);
            margin: 2rem 0;
        }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 56px 24px;
        }

        .not-found-icon {
            width: 96px;
            height: 96px;
            margin: 0 auto 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(79, 70, 229, 0.07);
            color: var(--primary);
            font-size: 40px;
        }

        .not-found-box h1 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .not-found-box p {
            color: var(--text-sub);
            max-width: 420px;
            margin: 0 auto 28px;
            font-size: 15px;
            line-height: 1.8;
        }

        /* ===== Related Section ===== */
        .related-section {
            background: #fff;
            padding: 64px 0;
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

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

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
            color: var(--primary);
            background: rgba(79, 70, 229, 0.07);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 10px;
        }

        .section-head h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.35;
        }

        .section-line {
            width: 56px;
            height: 3px;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            display: flex;
            flex-direction: column;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(79, 70, 229, 0.2);
        }

        .related-image {
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

        .related-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .related-content {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .related-content h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            transition: color 0.2s ease;
        }

        .related-card:hover .related-content h3 {
            color: var(--primary);
        }

        .related-content p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 14px;
        }

        .related-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap 0.2s ease;
        }

        .related-card:hover .related-link {
            gap: 8px;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 64px 0;
            background: linear-gradient(135deg, #eef2ff 0%, #f5f3ff 50%, #fef3c7 100%);
        }

        .cta-inner {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-xl);
            padding: 48px 56px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }

        .cta-inner h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .cta-inner p {
            color: var(--text-sub);
            font-size: 15px;
            margin-bottom: 28px;
            max-width: 480px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.8;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .back-to-list {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 20px;
            font-size: 14px;
            color: var(--text-sub);
            transition: color 0.2s ease;
        }

        .back-to-list:hover {
            color: var(--primary);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #111827;
            color: #9ca3af;
            padding: 64px 0 0;
            font-size: 14px;
            line-height: 1.8;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 40px;
            padding-bottom: 48px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
        }

        .footer-brand p {
            margin-bottom: 20px;
            max-width: 320px;
            color: #9ca3af;
        }

        .footer-social {
            display: flex;
            gap: 10px;
        }

        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: #d1d5db;
            font-size: 16px;
            transition: all 0.3s ease;
        }

        .footer-social a:hover {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            transform: translateY(-2px);
        }

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

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul a {
            color: #9ca3af;
            transition: color 0.2s ease;
        }

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

        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
            color: #9ca3af;
        }

        .footer-contact-item i {
            color: var(--accent);
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid #1f2937;
            padding: 20px 0;
            text-align: center;
            color: #6b7280;
            font-size: 13px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

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

        @media (max-width: 768px) {
            .nav-wrapper {
                height: 64px;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border-light);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
                flex-direction: column;
                align-items: stretch;
                padding: 12px 20px;
                gap: 4px;
            }

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

            .nav-link {
                padding: 12px 14px;
                border-radius: 10px;
            }

            .nav-link.active::after {
                left: 14px;
                right: auto;
                width: 24px;
            }

            .nav-toggle {
                display: inline-flex;
            }

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

            .article-banner {
                padding: 22px 0;
            }

            .article-section {
                padding: 28px 0 40px;
            }

            .article-card {
                padding: 28px 20px;
                border-radius: 1.25rem;
            }

            .article-header h1 {
                font-size: 24px;
                line-height: 1.4;
            }

            .article-meta {
                gap: 12px;
                font-size: 13px;
            }

            .related-section {
                padding: 44px 0;
            }

            .section-head h2 {
                font-size: 24px;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .cta-section {
                padding: 44px 0;
            }

            .cta-inner {
                padding: 32px 20px;
                border-radius: 1.25rem;
            }

            .cta-inner h2 {
                font-size: 23px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-bottom: 32px;
            }

            .site-footer {
                padding-top: 44px;
            }
        }

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

            .nav-logo-text {
                font-size: 16px;
            }

            .nav-logo-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }

            .btn-nav {
                padding: 7px 14px;
                font-size: 12px;
            }

            .article-header h1 {
                font-size: 21px;
            }

            .article-body {
                font-size: 15px;
            }

            .related-card .related-content {
                padding: 16px;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #4F46E5;
            --color-primary-dark: #4338CA;
            --color-secondary: #7C3AED;
            --color-accent: #F59E0B;
            --color-dark: #111827;
            --color-muted: #6B7280;
            --color-surface: #F8FAFC;
            --color-border: #E5E7EB;
            --color-success: #10B981;
            --color-danger: #EF4444;
            --radius-xl: 24px;
            --radius-lg: 16px;
            --radius-md: 12px;
            --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 20px 40px -12px rgba(79, 70, 229, 0.18);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--color-surface);
            color: var(--color-dark);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

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

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

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

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: var(--color-dark);
            white-space: nowrap;
        }

        .nav-logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: #fff;
            font-size: 16px;
            font-weight: 800;
            flex-shrink: 0;
        }

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

        .nav-link {
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: #4B5563;
            border-radius: 8px;
            transition: all 0.25s;
            position: relative;
        }

        .nav-link:hover {
            color: var(--color-primary);
            background: #EEF2FF;
        }

        .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
            background: rgba(79, 70, 229, 0.08);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 14px;
            right: 14px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
        }

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

        .btn-header {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
            color: #fff;
            border-radius: 10px;
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
            transition: all 0.25s;
            white-space: nowrap;
        }

        .btn-header:hover {
            box-shadow: 0 8px 20px rgba(79, 70, 229, 0.35);
            transform: translateY(-1px);
            filter: brightness(1.05);
        }

        .btn-header:focus {
            outline: none;
            box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.25);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 20px;
            color: var(--color-dark);
            width: 42px;
            height: 42px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            transition: background 0.2s;
        }

        .mobile-toggle:hover {
            background: #F3F4F6;
        }

        /* ===== Hero ===== */
        .page-hero {
            position: relative;
            padding: 80px 0;
            background: linear-gradient(135deg, #EEF2FF 0%, #F5F3FF 50%, #FEF3C7 100%);
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 280px;
            height: 280px;
            background: rgba(255, 255, 255, 0.4);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 60px;
            align-items: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(90deg, #F59E0B, #F97316);
            color: #fff;
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 12px;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
        }

        .hero-title {
            font-size: clamp(32px, 5vw, 48px);
            font-weight: 800;
            line-height: 1.2;
            color: var(--color-dark);
            margin-top: 20px;
        }

        .hero-title .grad-text {
            background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 18px;
            color: #4B5563;
            margin-top: 12px;
            font-weight: 500;
        }

        .hero-desc {
            font-size: 16px;
            color: var(--color-muted);
            margin-top: 16px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            gap: 12px;
            margin-top: 28px;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
            color: #fff;
            border-radius: 12px;
            padding: 14px 28px;
            font-size: 16px;
            font-weight: 600;
            box-shadow: 0 8px 24px rgba(79, 70, 229, 0.3);
            transition: all 0.3s;
        }

        .btn-primary:hover {
            box-shadow: 0 12px 30px rgba(79, 70, 229, 0.4);
            transform: translateY(-2px);
        }

        .btn-primary:focus {
            outline: none;
            box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.25);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 2px solid #C7D2FE;
            color: var(--color-primary);
            background: #fff;
            border-radius: 12px;
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 600;
            transition: all 0.3s;
        }

        .btn-ghost:hover {
            border-color: var(--color-primary);
            background: #EEF2FF;
        }

        .btn-ghost:focus {
            outline: none;
            box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.25);
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-top: 36px;
        }

        .stat-card {
            background: #fff;
            border-radius: 16px;
            padding: 16px 20px;
            border: 1px solid var(--color-border);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
        }

        .stat-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--color-dark);
            font-variant-numeric: tabular-nums;
        }

        .stat-label {
            font-size: 13px;
            color: var(--color-muted);
            margin-top: 4px;
        }

        .hero-media {
            position: relative;
        }

        .hero-img-wrap {
            border-radius: 24px;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(79, 70, 229, 0.2);
            border: 4px solid #fff;
        }

        .hero-float-card {
            position: absolute;
            bottom: 24px;
            left: -20px;
            background: #fff;
            border-radius: 16px;
            padding: 16px 20px;
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
            display: flex;
            align-items: center;
            gap: 12px;
            max-width: 260px;
        }

        .float-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            flex-shrink: 0;
        }

        .float-label {
            font-size: 12px;
            color: var(--color-muted);
        }

        .float-text {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-dark);
            margin-top: 2px;
        }

        /* ===== Section ===== */
        .section {
            padding: 80px 0;
        }

        .section-header {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 40px;
        }

        .section-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 2px;
            color: var(--color-primary);
            background: #EEF2FF;
            border-radius: 999px;
            padding: 4px 12px;
            width: fit-content;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--color-dark);
            line-height: 1.3;
        }

        .section-line {
            width: 64px;
            height: 4px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
        }

        .section-desc {
            font-size: 15px;
            color: var(--color-muted);
            max-width: 640px;
            line-height: 1.7;
        }

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

        .category-card {
            background: #fff;
            border-radius: 20px;
            border: 1px solid var(--color-border);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s;
            display: flex;
            flex-direction: column;
            position: relative;
        }

        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: #C7D2FE;
        }

        .category-card-num {
            position: absolute;
            top: 16px;
            right: 16px;
            z-index: 2;
            width: 32px;
            height: 32px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(4px);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            color: var(--color-primary);
            border: 1px solid #E5E7EB;
        }

        .category-card-media {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .category-card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s;
        }

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

        .category-card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .category-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-secondary);
            background: #F5F3FF;
            border-radius: 999px;
            padding: 4px 12px;
            width: fit-content;
        }

        .category-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-top: 12px;
            color: var(--color-dark);
        }

        .category-card-body p {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.7;
            margin-top: 8px;
            flex: 1;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--color-primary);
            font-size: 14px;
            font-weight: 600;
            margin-top: 16px;
            transition: gap 0.2s;
        }

        .card-link:hover {
            gap: 10px;
        }

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

        .step-card {
            background: #fff;
            border-radius: 20px;
            padding: 32px 28px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            position: relative;
            transition: all 0.3s;
        }

        .step-card:hover {
            box-shadow: 0 16px 36px rgba(79, 70, 229, 0.1);
            transform: translateY(-4px);
        }

        .step-num {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
        }

        .step-icon {
            font-size: 28px;
            color: var(--color-primary);
            margin-top: 20px;
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-top: 12px;
            color: var(--color-dark);
        }

        .step-card p {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.7;
            margin-top: 8px;
        }

        /* ===== Quality ===== */
        .quality-section {
            background: #fff;
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .quality-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .quality-media {
            border-radius: 24px;
            overflow: hidden;
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.1);
        }

        .quality-points {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-top: 24px;
        }

        .quality-point {
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }

        .quality-point-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: #D1FAE5;
            color: var(--color-success);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        .quality-point h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-dark);
        }

        .quality-point p {
            font-size: 14px;
            color: var(--color-muted);
            margin-top: 4px;
            line-height: 1.6;
        }

        .quality-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-top: 32px;
            padding-top: 32px;
            border-top: 1px solid #F3F4F6;
        }

        .qstat-num {
            font-size: 24px;
            font-weight: 800;
            color: var(--color-primary);
            font-variant-numeric: tabular-nums;
        }

        .qstat-label {
            font-size: 13px;
            color: var(--color-muted);
            margin-top: 4px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border-radius: 16px;
            border: 1px solid var(--color-border);
            margin-bottom: 16px;
            overflow: hidden;
            transition: box-shadow 0.3s;
        }

        .faq-item.active {
            box-shadow: 0 8px 24px rgba(79, 70, 229, 0.08);
            border-color: #C7D2FE;
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            text-align: left;
            gap: 16px;
            transition: background 0.2s;
        }

        .faq-question:hover {
            background: #F9FAFB;
        }

        .faq-question:focus {
            outline: none;
            box-shadow: inset 0 0 0 2px rgba(79, 70, 229, 0.3);
            border-radius: 16px;
        }

        .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: #EEF2FF;
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
            transition: transform 0.3s, background 0.3s, color 0.3s;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 60px 0;
        }

        .cta-box {
            border-radius: 28px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            padding: 60px;
            text-align: center;
            position: relative;
            overflow: hidden;
            color: #fff;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -20px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
        }

        .cta-box::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -40px;
            width: 240px;
            height: 240px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
        }

        .cta-title {
            font-size: 30px;
            font-weight: 800;
            position: relative;
            z-index: 1;
        }

        .cta-desc {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.9);
            margin-top: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            margin-top: 28px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .btn-white {
            background: #fff;
            color: var(--color-primary);
            border-radius: 12px;
            padding: 14px 32px;
            font-size: 16px;
            font-weight: 600;
            transition: all 0.3s;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }

        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
        }

        .btn-white:focus {
            outline: none;
            box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.4);
        }

        .btn-outline-white {
            border: 2px solid rgba(255, 255, 255, 0.7);
            color: #fff;
            border-radius: 12px;
            padding: 12px 24px;
            font-size: 15px;
            font-weight: 600;
            transition: all 0.3s;
            background: transparent;
        }

        .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
        }

        .btn-outline-white:focus {
            outline: none;
            box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.3);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-dark);
            color: #9CA3AF;
            padding-top: 60px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 48px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin-top: 16px;
            max-width: 320px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 24px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            transition: all 0.3s;
            font-size: 15px;
        }

        .footer-social a:hover {
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            transform: translateY(-2px);
        }

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

        .footer-col ul {
            list-style: none;
        }

        .footer-col li {
            margin-bottom: 10px;
        }

        .footer-col a {
            font-size: 14px;
            color: #9CA3AF;
            transition: color 0.2s;
        }

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

        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            margin-bottom: 12px;
        }

        .footer-bottom {
            border-top: 1px solid #1F2937;
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: #6B7280;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

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

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .quality-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 992px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .hero-float-card {
                left: auto;
                right: 20px;
            }
        }

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

            .section-title {
                font-size: 26px;
            }

            .page-hero {
                padding: 48px 0;
            }

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

            .hero-title {
                font-size: 32px;
            }

            .cta-box {
                padding: 40px 24px;
            }

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

            .mobile-toggle {
                display: flex;
            }

            .nav-links {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                flex-direction: column;
                background: #fff;
                border-bottom: 1px solid var(--color-border);
                padding: 16px 24px;
                gap: 4px;
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.3s;
                box-shadow: 0 16px 32px rgba(0, 0, 0, 0.08);
            }

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

            .nav-link {
                width: 100%;
                text-align: center;
            }

            .nav-link.active::after {
                display: none;
            }

            .header-actions .btn-header {
                display: none;
            }
        }

        @media (max-width: 640px) {
            .container-custom {
                padding: 0 16px;
            }

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

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

            .hero-stats {
                grid-template-columns: 1fr 1fr;
            }

            .quality-stats {
                grid-template-columns: 1fr 1fr 1fr;
                gap: 12px;
            }

            .qstat-num {
                font-size: 20px;
            }

            .hero-float-card {
                position: static;
                margin-top: 16px;
                max-width: 100%;
            }

            .hero-actions .btn-primary,
            .hero-actions .btn-ghost {
                width: 100%;
                justify-content: center;
            }

            .cta-actions .btn-white,
            .cta-actions .btn-outline-white {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: category3 */
:root {
    --primary: #4F46E5;
    --primary-dark: #4338CA;
    --secondary: #7C3AED;
    --accent: #F59E0B;
    --bg: #F8FAFC;
    --card: #FFFFFF;
    --text: #111827;
    --muted: #6B7280;
    --border: #E5E7EB;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 15px -3px rgba(79,70,229,0.12);
    --radius-lg: 1.5rem;
    --radius-md: 1rem;
    --radius-sm: 0.75rem;
  }

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

  body {
    font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }

  a {
    color: inherit;
    text-decoration: none;
  }

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

  button {
    font-family: inherit;
    cursor: pointer;
  }

  ul {
    list-style: none;
  }

  .container-custom {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }

  /* ===== Header & Nav ===== */
  .site-header {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 50;
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    gap: 20px;
  }

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

  .nav-logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 16px;
    letter-spacing: -0.5px;
  }

  .nav-logo-text {
    font-weight: 700;
    font-size: 18px;
    color: var(--text);
    white-space: nowrap;
  }

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

  .nav-link {
    padding: 8px 14px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 500;
    color: var(--muted);
    transition: all 0.2s ease;
    position: relative;
  }

  .nav-link:hover {
    color: var(--primary);
    background: #EEF2FF;
  }

  .nav-link.active {
    color: var(--primary);
    font-weight: 600;
  }

  .nav-link.active::after {
    content: '';
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 2px;
    height: 3px;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
  }

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

  .nav-toggle {
    display: none;
    background: #F3F4F6;
    border: 1px solid var(--border);
    border-radius: 10px;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--text);
    transition: all 0.2s;
  }

  .nav-toggle:hover {
    background: #E5E7EB;
  }

  @media (max-width: 768px) {
    .nav-links {
      position: absolute;
      top: 70px;
      left: 0;
      right: 0;
      background: #fff;
      border-bottom: 1px solid var(--border);
      padding: 20px;
      display: none;
      flex-direction: column;
      gap: 8px;
      box-shadow: var(--shadow-md);
    }

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

    .nav-link {
      width: 100%;
      padding: 12px 16px;
      font-size: 16px;
    }

    .nav-link.active::after {
      display: none;
    }

    .nav-toggle {
      display: flex;
    }

    .header-btn {
      display: none;
    }
  }

  /* ===== Buttons ===== */
  .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    border-radius: var(--radius-sm);
    padding: 12px 24px;
    font-weight: 600;
    font-size: 15px;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
    transition: all 0.3s ease;
    border: none;
  }

  .btn-primary:hover {
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.35);
    transform: translateY(-1px);
    filter: brightness(1.05);
  }

  .btn-primary:active {
    transform: scale(0.97);
  }

  .btn-primary:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.4);
  }

  .btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #fff;
    border: 2px solid #C7D2FE;
    color: var(--primary);
    border-radius: var(--radius-sm);
    padding: 10px 22px;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s ease;
  }

  .btn-ghost:hover {
    border-color: var(--primary);
    background: #EEF2FF;
  }

  .btn-ghost:active {
    transform: scale(0.97);
  }

  .btn-ghost:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.3);
  }

  .btn-lg {
    padding: 14px 28px;
    font-size: 16px;
  }

  .header-btn {
    padding: 10px 20px;
    font-size: 14px;
  }

  /* ===== Hero ===== */
  .hero-block {
    background: linear-gradient(135deg, #EEF2FF 0%, #F5F3FF 50%, #FEF3C7 100%);
    padding: 80px 0 70px;
    position: relative;
    overflow: hidden;
  }

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

  .hero-block .container-custom {
    position: relative;
    z-index: 1;
  }

  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #F59E0B, #FB923C);
    color: #fff;
    border-radius: 999px;
    padding: 6px 16px;
    font-size: 13px;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
    margin-bottom: 20px;
  }

  .hero-title {
    font-size: 40px;
    line-height: 1.2;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -0.5px;
    margin-bottom: 16px;
  }

  .hero-subtitle {
    font-size: 17px;
    color: #4B5563;
    max-width: 480px;
    line-height: 1.7;
    margin-bottom: 28px;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 36px;
  }

  .hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 28px;
  }

  .stat-item {
    display: flex;
    flex-direction: column;
  }

  .stat-num {
    font-size: 28px;
    font-weight: 800;
    color: var(--text);
    font-variant-numeric: tabular-nums;
    line-height: 1.2;
  }

  .stat-num::after {
    content: '';
    display: block;
    width: 24px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
    margin-top: 4px;
  }

  .stat-label {
    font-size: 13px;
    color: var(--muted);
    margin-top: 4px;
  }

  .hero-visual {
    position: relative;
  }

  .hero-card {
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 40px rgba(79, 70, 229, 0.15);
    overflow: hidden;
    border: 1px solid var(--border);
    transform: rotate(1.5deg);
  }

  .hero-card img {
    width: 100%;
    height: 340px;
    object-fit: cover;
  }

  .hero-float-card {
    position: absolute;
    bottom: -16px;
    left: -20px;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 14px 18px;
    display: flex;
    align-items: center;
    gap: 12px;
    border: 1px solid var(--border);
  }

  .hero-float-card i {
    color: #10B981;
    font-size: 24px;
  }

  .hero-float-card strong {
    font-size: 14px;
    color: var(--text);
    display: block;
    line-height: 1.4;
  }

  .hero-float-card p {
    font-size: 12px;
    color: var(--muted);
  }

  @media (max-width: 1024px) {
    .hero-title {
      font-size: 34px;
    }
  }

  @media (max-width: 768px) {
    .hero-block {
      padding: 50px 0 60px;
    }

    .hero-title {
      font-size: 30px;
    }

    .hero-visual {
      margin-top: 40px;
    }

    .hero-float-card {
      left: 10px;
      bottom: -14px;
    }

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

  /* ===== Section ===== */
  .section-block {
    padding: 80px 0;
  }

  .section-block-alt {
    background: #fff;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  .section-head {
    max-width: 640px;
    margin-bottom: 50px;
  }

  .section-tag {
    display: inline-block;
    background: #EEF2FF;
    color: var(--primary);
    border-radius: 999px;
    padding: 5px 14px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 12px;
  }

  .section-title {
    font-size: 32px;
    line-height: 1.25;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 14px;
    letter-spacing: -0.3px;
  }

  .section-desc {
    font-size: 16px;
    color: var(--muted);
    line-height: 1.7;
  }

  .section-head::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 2px;
    margin-top: 16px;
  }

  @media (max-width: 768px) {
    .section-block {
      padding: 50px 0;
    }

    .section-title {
      font-size: 26px;
    }
  }

  /* ===== Guide Cards ===== */
  .guide-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    position: relative;
    transition: all 0.3s ease;
  }

  .guide-card:hover {
    box-shadow: 0 12px 24px rgba(79, 70, 229, 0.1);
    border-color: #C7D2FE;
    transform: translateY(-4px);
  }

  .card-index {
    position: absolute;
    top: 16px;
    right: 20px;
    font-size: 24px;
    font-weight: 800;
    color: #E5E7EB;
    letter-spacing: -1px;
    transition: color 0.3s;
  }

  .guide-card:hover .card-index {
    color: #C7D2FE;
  }

  .card-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 18px;
  }

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

  .guide-card p {
    font-size: 14px;
    color: var(--muted);
    line-height: 1.7;
    margin-bottom: 16px;
  }

  .card-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.2s;
  }

  .card-link:hover {
    gap: 10px;
  }

  .card-link i {
    font-size: 12px;
  }

  /* ===== Process ===== */
  .process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 50px;
  }

  .process-step {
    position: relative;
    background: #fff;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    padding: 30px 24px;
    text-align: left;
    transition: all 0.3s ease;
  }

  .process-step:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
  }

  .step-num {
    font-size: 14px;
    font-weight: 700;
    color: var(--primary);
    background: #EEF2FF;
    display: inline-block;
    border-radius: 999px;
    padding: 4px 12px;
    margin-bottom: 16px;
  }

  .process-step h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 10px;
  }

  .process-step p {
    font-size: 14px;
    color: var(--muted);
    line-height: 1.7;
  }

  .step-arrow {
    position: absolute;
    top: 50%;
    right: -18px;
    width: 36px;
    height: 36px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    transform: translateY(-50%);
    z-index: 2;
    box-shadow: 0 4px 8px rgba(79, 70, 229, 0.3);
  }

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

    .step-arrow {
      display: none;
    }
  }

  @media (max-width: 640px) {
    .process-grid {
      grid-template-columns: 1fr;
    }
  }

  /* ===== Feature Split ===== */
  .feature-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
  }

  .feature-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
  }

  .feature-image img {
    width: 100%;
    height: 420px;
    object-fit: cover;
  }

  .feature-content .section-head {
    margin-bottom: 30px;
  }

  .feature-list {
    display: grid;
    gap: 18px;
  }

  .feature-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px 18px;
    transition: all 0.2s;
  }

  .feature-item:hover {
    border-color: #C7D2FE;
    box-shadow: var(--shadow-sm);
  }

  .feature-item i {
    color: var(--primary);
    font-size: 18px;
    width: 24px;
    text-align: center;
    margin-top: 2px;
  }

  .feature-item h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 4px;
  }

  .feature-item p {
    font-size: 14px;
    color: var(--muted);
    line-height: 1.6;
  }

  @media (max-width: 768px) {
    .feature-split {
      grid-template-columns: 1fr;
      gap: 40px;
    }

    .feature-image img {
      height: 280px;
    }
  }

  /* ===== Scene Cards ===== */
  .scene-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 50px;
  }

  .scene-card {
    background: #fff;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    padding: 30px 24px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
  }

  .scene-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    opacity: 0;
    transition: opacity 0.3s;
  }

  .scene-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
  }

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

  .scene-icon {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    background: #EEF2FF;
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 20px;
  }

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

  .scene-card p {
    font-size: 14px;
    color: var(--muted);
    line-height: 1.7;
  }

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

  @media (max-width: 640px) {
    .scene-grid {
      grid-template-columns: 1fr;
    }
  }

  /* ===== FAQ ===== */
  .faq-wrap {
    max-width: 800px;
    margin: 0 auto;
  }

  .faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: 14px;
    overflow: hidden;
    transition: all 0.2s;
  }

  .faq-item.active {
    border-color: #C7D2FE;
    box-shadow: var(--shadow-sm);
  }

  .faq-btn {
    width: 100%;
    background: none;
    border: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 22px;
    text-align: left;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    transition: color 0.2s;
  }

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

  .faq-btn .faq-icon {
    width: 30px;
    height: 30px;
    border-radius: 8px;
    background: #EEF2FF;
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
    transition: all 0.3s;
  }

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

  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
  }

  .faq-answer-inner {
    padding: 0 22px 20px;
    font-size: 15px;
    color: var(--muted);
    line-height: 1.8;
  }

  .faq-item.active .faq-answer {
    max-height: 300px;
  }

  /* ===== CTA ===== */
  .cta-block {
    background: linear-gradient(135deg, #EEF2FF 0%, #F5F3FF 50%, #FEF3C7 100%);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
    padding: 70px 50px;
    text-align: center;
  }

  .cta-block::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: 32px;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 14px;
    line-height: 1.3;
  }

  .cta-inner p {
    font-size: 16px;
    color: #4B5563;
    margin-bottom: 30px;
    line-height: 1.7;
  }

  .cta-actions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
  }

  @media (max-width: 768px) {
    .cta-block {
      padding: 50px 24px;
    }

    .cta-inner h2 {
      font-size: 26px;
    }
  }

  /* ===== Footer ===== */
  .site-footer {
    background: #111827;
    color: #9CA3AF;
    padding: 60px 0 30px;
    margin-top: 80px;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid #1F2937;
    margin-bottom: 30px;
  }

  .footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
  }

  .footer-logo .nav-logo-icon {
    width: 34px;
    height: 34px;
    font-size: 15px;
  }

  .footer-logo span:last-child {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
  }

  .footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 20px;
    color: #9CA3AF;
  }

  .footer-social {
    display: flex;
    gap: 10px;
  }

  .footer-social a {
    width: 36px;
    height: 36px;
    background: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #111827;
    font-size: 15px;
    transition: all 0.3s;
  }

  .footer-social a:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-2px);
  }

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

  .footer-col ul li {
    margin-bottom: 10px;
  }

  .footer-col ul li a {
    font-size: 14px;
    color: #9CA3AF;
    transition: color 0.2s;
  }

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

  .footer-contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: #9CA3AF;
    margin-bottom: 12px;
  }

  .footer-contact-item i {
    color: #6B7280;
    width: 18px;
    text-align: center;
  }

  .footer-bottom {
    text-align: center;
    font-size: 13px;
    color: #6B7280;
    padding-top: 20px;
    border-top: 1px solid #1F2937;
  }

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

  @media (max-width: 640px) {
    .footer-grid {
      grid-template-columns: 1fr;
      gap: 30px;
    }
  }

  /* ===== Misc ===== */
  .text-muted {
    color: var(--muted);
  }

  .bg-soft {
    background: #EEF2FF;
  }

  section[id] {
    scroll-margin-top: 80px;
  }