/* roulang page: index */
:root {
            --bg-primary: #0C0E11;
            --bg-secondary: #14171C;
            --bg-card: #1A1E24;
            --bg-black: #07090B;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-color-light: rgba(255, 255, 255, 0.15);
            --accent-primary: #F5A623;
            --accent-secondary: #2DD4BF;
            --text-primary: #E8EAED;
            --text-secondary: #A0A5AD;
            --text-muted: #6B7078;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 10px;
            --radius-xl: 12px;
            --radius-2xl: 14px;
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.4);
            --shadow-card-hover: 0 8px 28px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(245, 166, 35, 0.16);
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --transition-base: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-smooth: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-stack);
            font-size: 15px;
            font-weight: 400;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            min-height: 100vh;
            overflow-x: hidden;
        }
        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-stack);
            color: var(--text-primary);
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 0.5rem;
        }
        h1 {
            font-size: 38px;
            line-height: 1.25;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }
        h2 {
            font-size: 26px;
            font-weight: 600;
            line-height: 1.35;
            margin-bottom: 12px;
        }
        h3 {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.4;
        }
        p {
            margin-bottom: 1rem;
            color: var(--text-secondary);
            line-height: 1.85;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        a:hover {
            color: var(--accent-primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: var(--font-stack);
        }
        button:focus, input:focus, select:focus, textarea:focus {
            outline: none;
        }
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section-padding {
            padding-top: 80px;
            padding-bottom: 80px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 680px;
            margin-bottom: 2rem;
        }
        .badge-tag {
            display: inline-block;
            background: var(--bg-card);
            border: 1px solid var(--accent-secondary);
            color: var(--accent-secondary);
            border-radius: var(--radius-sm);
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 500;
            transition: transform var(--transition-base);
            cursor: default;
        }
        .badge-tag:hover {
            transform: translateY(-2px);
        }
        .accent-badge {
            display: inline-block;
            background: rgba(245, 166, 35, 0.12);
            border: 1px solid rgba(245, 166, 35, 0.4);
            color: var(--accent-primary);
            border-radius: var(--radius-sm);
            padding: 3px 10px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        /* Top info bar */
        .top-info-bar {
            background: var(--bg-black);
            color: var(--text-muted);
            font-size: 12px;
            height: 36px;
            display: flex;
            align-items: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            position: relative;
            z-index: 1060;
        }
        .top-info-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .top-info-bar .domain-hint {
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 0.03em;
        }
        .top-info-bar .quick-links {
            display: flex;
            gap: 16px;
            align-items: center;
        }
        .top-info-bar .quick-links a {
            color: var(--text-muted);
            font-size: 12px;
            transition: color var(--transition-base);
        }
        .top-info-bar .quick-links a:hover {
            color: var(--accent-primary);
        }
        /* Main nav */
        .main-nav {
            height: 64px;
            background: var(--bg-primary);
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: background var(--transition-base), border-color var(--transition-base);
        }
        .main-nav.scrolled {
            background: #0A0C0F;
            border-bottom-color: rgba(255, 255, 255, 0.15);
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .brand-section {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo-graphic {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, rgba(245, 166, 35, 0.25), rgba(45, 212, 191, 0.15));
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(245, 166, 35, 0.35);
            flex-shrink: 0;
        }
        .logo-graphic svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: var(--accent-primary);
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .brand-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.01em;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: color var(--transition-base);
            position: relative;
            padding: 4px 0;
        }
        .nav-links li a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-primary);
            transition: width var(--transition-base);
            border-radius: 1px;
        }
        .nav-links li a:hover {
            color: var(--text-primary);
        }
        .nav-links li a:hover::after,
        .nav-links li a.active::after {
            width: 100%;
        }
        .nav-links li a.active {
            color: var(--accent-primary);
        }
        .nav-cta {
            margin-left: 8px;
        }
        .btn-primary-custom {
            background: var(--accent-primary);
            color: #0C0E11;
            border: none;
            border-radius: var(--radius-md);
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: filter var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            letter-spacing: 0.02em;
        }
        .btn-primary-custom:hover {
            filter: brightness(1.1);
            transform: translateY(2px);
            color: #0C0E11;
        }
        .btn-primary-custom:focus {
            box-shadow: 0 0 0 2px rgba(245, 166, 35, 0.5);
        }
        .btn-primary-custom:active {
            filter: brightness(0.95);
            transform: translateY(0);
        }
        .btn-secondary-custom {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: var(--radius-md);
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: border-color var(--transition-base), color var(--transition-base), background var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .btn-secondary-custom:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
        }
        .btn-secondary-custom:active {
            background: rgba(255, 255, 255, 0.08);
        }
        .hamburger-btn {
            display: none;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 6px;
            padding: 6px 10px;
            cursor: pointer;
            color: var(--text-primary);
            font-size: 18px;
            transition: border-color var(--transition-base);
        }
        .hamburger-btn:hover {
            border-color: var(--accent-primary);
        }
        /* Mobile menu drawer */
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -100%;
            width: 100%;
            max-width: 380px;
            height: 100vh;
            background: var(--bg-secondary);
            z-index: 2000;
            display: flex;
            flex-direction: column;
            transition: right var(--transition-smooth);
            overflow-y: auto;
        }
        .mobile-drawer.open {
            right: 0;
        }
        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.85);
            z-index: 1990;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-base);
        }
        .drawer-overlay.open {
            opacity: 1;
            pointer-events: auto;
        }
        .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            border-bottom: 1px solid var(--border-color);
        }
        .drawer-close-btn {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 6px;
            padding: 6px 10px;
            cursor: pointer;
            color: var(--text-primary);
            font-size: 16px;
        }
        .drawer-menu {
            list-style: none;
            padding: 20px;
            flex: 1;
        }
        .drawer-menu li {
            margin-bottom: 4px;
        }
        .drawer-menu li a {
            display: block;
            padding: 14px 16px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-primary);
            border-radius: 8px;
            transition: background var(--transition-base), color var(--transition-base);
        }
        .drawer-menu li a:hover,
        .drawer-menu li a.active {
            background: var(--bg-card);
            color: var(--accent-primary);
        }
        .drawer-bottom {
            padding: 20px;
            border-top: 1px solid var(--border-color);
        }
        .drawer-bottom .btn-primary-custom {
            width: 100%;
            justify-content: center;
        }
        /* Hero Section */
        .hero-section {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            padding-top: 100px;
            padding-bottom: 80px;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(12, 14, 17, 0.92) 0%, rgba(12, 14, 17, 0.65) 50%, rgba(12, 14, 17, 0.4) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 620px;
        }
        .hero-content h1 {
            font-size: 38px;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .hero-content .hero-subtitle {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 24px;
            max-width: 540px;
        }
        .hero-cta-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }
        .hero-metrics {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 12px;
            margin-top: 40px;
        }
        .metric-card {
            background: rgba(12, 14, 17, 0.7);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-2xl);
            padding: 18px 16px;
            text-align: center;
            transition: transform var(--transition-base), border-color var(--transition-base), background var(--transition-base);
        }
        .metric-card:hover {
            transform: translateY(-4px);
            border-color: rgba(245, 166, 35, 0.4);
            background: rgba(12, 14, 17, 0.85);
        }
        .metric-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--accent-primary);
            line-height: 1.2;
            display: block;
        }
        .metric-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 4px;
            font-weight: 500;
        }
        /* Section heading */
        .section-heading {
            margin-bottom: 36px;
        }
        .section-heading h2 {
            margin-bottom: 8px;
        }
        .section-heading .accent-line {
            width: 36px;
            height: 3px;
            background: var(--accent-primary);
            border-radius: 2px;
            display: inline-block;
            margin-bottom: 10px;
        }
        /* Service matrix cards */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .service-card {
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-color);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 100%;
            border-radius: 0 2px 2px 0;
        }
        .service-card.card-accent-1::before {
            background: var(--accent-primary);
        }
        .service-card.card-accent-2::before {
            background: var(--accent-secondary);
        }
        .service-card.card-accent-3::before {
            background: #C4A87C;
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(245, 166, 35, 0.3);
        }
        .service-card .card-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
            font-size: 20px;
        }
        .service-card.card-accent-1 .card-icon {
            background: rgba(245, 166, 35, 0.12);
            color: var(--accent-primary);
        }
        .service-card.card-accent-2 .card-icon {
            background: rgba(45, 212, 191, 0.12);
            color: var(--accent-secondary);
        }
        .service-card.card-accent-3 .card-icon {
            background: rgba(196, 168, 124, 0.12);
            color: #C4A87C;
        }
        .service-card h3 {
            margin-bottom: 8px;
            font-size: 16px;
        }
        .service-card .card-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .service-card .card-metrics {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            border-top: 1px solid var(--border-color);
            padding-top: 12px;
        }
        .service-card .card-metrics .badge-tag {
            font-size: 11px;
            padding: 3px 8px;
        }
        /* Comparison table */
        .comparison-table-wrapper {
            background: var(--bg-secondary);
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-color);
            padding: 28px;
            overflow-x: auto;
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }
        .comparison-table thead th {
            padding: 14px 18px;
            text-align: left;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-primary);
            border-bottom: 2px solid rgba(245, 166, 35, 0.3);
            letter-spacing: 0.03em;
        }
        .comparison-table tbody td {
            padding: 14px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            line-height: 1.7;
        }
        .comparison-table tbody tr:last-child td {
            border-bottom: none;
        }
        .comparison-table tbody td:first-child {
            font-weight: 600;
            color: var(--text-primary);
        }
        .comparison-conclusion {
            margin-top: 20px;
            padding: 16px 20px;
            background: rgba(245, 166, 35, 0.06);
            border-left: 3px solid var(--accent-primary);
            border-radius: 0 8px 8px 0;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        /* Brand intro */
        .brand-intro-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .brand-intro-content {
            display: flex;
            gap: 36px;
            align-items: flex-start;
        }
        .brand-intro-image {
            flex: 0 0 300px;
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid var(--border-color);
        }
        .brand-intro-image img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }
        .brand-intro-text {
            flex: 1;
        }
        .brand-intro-text p {
            font-size: 15px;
            line-height: 1.9;
        }
        /* News section */
        .news-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 32px;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .news-item {
            display: flex;
            gap: 16px;
            padding: 18px 12px;
            border-bottom: 1px solid var(--border-color);
            transition: background var(--transition-base);
            border-radius: 6px;
        }
        .news-item:hover {
            background: var(--bg-card);
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .news-item .news-date {
            flex: 0 0 auto;
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
            min-width: 68px;
        }
        .news-item .news-content {
            flex: 1;
        }
        .news-item .news-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            display: block;
            margin-bottom: 4px;
            line-height: 1.5;
        }
        .news-item .news-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .news-sidebar {
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-color);
            padding: 24px;
            height: fit-content;
        }
        .news-sidebar h3 {
            font-size: 16px;
            margin-bottom: 14px;
            color: var(--text-primary);
        }
        .news-sidebar .sidebar-item {
            display: block;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
            color: var(--text-secondary);
            transition: color var(--transition-base);
        }
        .news-sidebar .sidebar-item:hover {
            color: var(--accent-primary);
        }
        .news-sidebar .sidebar-item:last-child {
            border-bottom: none;
        }
        /* Testimonial cards */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .testimonial-card {
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-color);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }
        .testimonial-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .testimonial-card .quote-icon {
            color: var(--accent-primary);
            font-size: 20px;
            margin-bottom: 10px;
            opacity: 0.7;
        }
        .testimonial-card .quote-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 14px;
        }
        .testimonial-card .author-info {
            display: flex;
            align-items: center;
            gap: 10px;
            border-top: 1px solid var(--border-color);
            padding-top: 14px;
        }
        .author-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(245, 166, 35, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-primary);
            font-weight: 600;
            font-size: 14px;
            flex-shrink: 0;
        }
        .author-name {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-primary);
        }
        .author-role {
            font-size: 12px;
            color: var(--text-muted);
        }
        /* Partner tags */
        .partner-tags-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 14px;
        }
        .partner-tag-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 16px;
            text-align: center;
            transition: transform var(--transition-base), border-color var(--transition-base);
        }
        .partner-tag-card:hover {
            transform: translateY(-3px);
            border-color: rgba(245, 166, 35, 0.3);
        }
        .partner-tag-card .tag-icon {
            font-size: 22px;
            color: var(--accent-primary);
            margin-bottom: 8px;
        }
        .partner-tag-card .tag-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .partner-tag-card .tag-desc {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.5;
        }
        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: background var(--transition-base), border-color var(--transition-base);
        }
        .faq-item.expanded {
            background: var(--bg-card);
            border-color: rgba(245, 166, 35, 0.25);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            user-select: none;
            transition: background var(--transition-base);
        }
        .faq-question:hover {
            background: rgba(255, 255, 255, 0.02);
        }
        .faq-question .faq-q-text {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .faq-question .faq-q-text .faq-index {
            color: var(--accent-primary);
            font-weight: 700;
            font-size: 14px;
            min-width: 20px;
        }
        .faq-toggle-icon {
            width: 20px;
            height: 20px;
            position: relative;
            flex-shrink: 0;
            transition: transform var(--transition-base);
        }
        .faq-toggle-icon::before,
        .faq-toggle-icon::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            background: var(--text-secondary);
            transition: transform var(--transition-base), background var(--transition-base);
        }
        .faq-toggle-icon::before {
            width: 14px;
            height: 2px;
            transform: translate(-50%, -50%);
        }
        .faq-toggle-icon::after {
            width: 2px;
            height: 14px;
            transform: translate(-50%, -50%);
        }
        .faq-item.expanded .faq-toggle-icon::after {
            transform: translate(-50%, -50%) scaleY(0);
        }
        .faq-item.expanded .faq-toggle-icon::before {
            background: var(--accent-primary);
        }
        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .faq-item.expanded .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px 20px;
        }
        /* Form section */
        .form-section {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .form-panel {
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-color);
            padding: 32px;
            box-shadow: var(--shadow-card);
        }
        .form-panel label {
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            margin-bottom: 6px;
            display: block;
        }
        .form-panel input,
        .form-panel select,
        .form-panel textarea {
            background: #0C0E11;
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-md);
            color: var(--text-primary);
            padding: 10px 14px;
            font-size: 14px;
            width: 100%;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .form-panel input:focus,
        .form-panel select:focus,
        .form-panel textarea:focus {
            border-color: var(--accent-primary);
            box-shadow: 0 0 0 2px rgba(245, 166, 35, 0.25);
            outline: none;
        }
        .form-panel textarea {
            resize: vertical;
            min-height: 90px;
        }
        .form-trust-hint {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 10px;
            margin-bottom: 0;
        }
        /* Footer */
        .site-footer {
            background: var(--bg-black);
            padding-top: 48px;
            padding-bottom: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr 1fr;
            gap: 24px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .footer-brand .brand-text {
            font-size: 18px;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-brand .brand-statement {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 13px;
            color: var(--text-muted);
            transition: color var(--transition-base);
        }
        .footer-col ul li a:hover {
            color: var(--accent-primary);
        }
        .footer-bottom {
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .footer-copyright {
            font-size: 12px;
            color: var(--text-muted);
        }
        .footer-legal-links {
            display: flex;
            gap: 16px;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-legal-links li a {
            font-size: 12px;
            color: var(--text-muted);
            transition: color var(--transition-base);
        }
        .footer-legal-links li a:hover {
            color: var(--accent-primary);
        }
        /* Responsive */
        @media (max-width: 1199px) {
            .service-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .testimonial-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .partner-tags-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        @media (max-width: 991px) {
            .nav-links {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger-btn {
                display: block;
            }
            h1 {
                font-size: 32px;
            }
            .hero-section {
                min-height: auto;
                padding-top: 80px;
                padding-bottom: 60px;
            }
            .hero-metrics {
                grid-template-columns: repeat(2, 1fr);
                gap: 8px;
            }
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .partner-tags-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr 1fr;
            }
            .brand-intro-content {
                flex-direction: column;
            }
            .brand-intro-image {
                flex: 0 0 auto;
                width: 100%;
            }
        }
        @media (max-width: 767px) {
            .section-padding {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            h1 {
                font-size: 28px;
                line-height: 1.3;
            }
            h2 {
                font-size: 22px;
            }
            .top-info-bar {
                font-size: 11px;
                height: auto;
                min-height: 32px;
                padding: 4px 0;
            }
            .top-info-bar .domain-hint {
                display: none;
            }
            .main-nav {
                height: 56px;
            }
            .brand-text {
                font-size: 16px;
            }
            .logo-graphic {
                width: 30px;
                height: 30px;
            }
            .hero-section {
                padding-top: 60px;
                padding-bottom: 40px;
            }
            .hero-content h1 {
                font-size: 26px;
            }
            .hero-content .hero-subtitle {
                font-size: 14px;
            }
            .hero-cta-group {
                flex-direction: column;
                gap: 8px;
            }
            .hero-cta-group .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-metrics {
                grid-template-columns: repeat(2, 1fr);
                margin-top: 24px;
            }
            .metric-number {
                font-size: 26px;
            }
            .metric-label {
                font-size: 12px;
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .partner-tags-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .comparison-table-wrapper {
                padding: 16px;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .form-panel {
                padding: 20px;
            }
        }
        @media (max-width: 575px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero-metrics {
                grid-template-columns: 1fr;
            }
            .metric-card {
                padding: 14px 12px;
            }
            .partner-tags-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .partner-tag-card {
                padding: 12px 8px;
            }
            .footer-top {
                grid-template-columns: 1fr;
            }
            .news-item {
                flex-direction: column;
                gap: 6px;
            }
            .news-item .news-date {
                min-width: auto;
            }
            .comparison-table {
                min-width: 480px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0C0E11;
            --bg-secondary: #14171C;
            --bg-card: #1A1E24;
            --bg-black: #07090B;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-color-light: rgba(255, 255, 255, 0.15);
            --accent-primary: #F5A623;
            --accent-secondary: #2DD4BF;
            --text-primary: #E8EAED;
            --text-secondary: #A0A5AD;
            --text-muted: #6B7078;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 10px;
            --radius-xl: 12px;
            --radius-2xl: 14px;
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.4);
            --shadow-card-hover: 0 8px 28px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(245, 166, 35, 0.16);
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --transition-base: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-smooth: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-stack);
            font-size: 15px;
            font-weight: 400;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            min-height: 100vh;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        a:hover {
            color: var(--accent-primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: var(--font-stack);
        }
        button:focus, input:focus, select:focus, textarea:focus {
            outline: none;
        }
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section-padding {
            padding-top: 80px;
            padding-bottom: 80px;
        }
        .badge-tag {
            display: inline-block;
            background: var(--bg-card);
            border: 1px solid var(--accent-secondary);
            color: var(--accent-secondary);
            border-radius: var(--radius-sm);
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 500;
            transition: transform var(--transition-base);
            cursor: default;
            margin-right: 6px;
            margin-bottom: 6px;
        }
        .badge-tag:hover {
            transform: translateY(-2px);
        }
        .accent-badge {
            display: inline-block;
            background: rgba(245, 166, 35, 0.12);
            border: 1px solid rgba(245, 166, 35, 0.4);
            color: var(--accent-primary);
            border-radius: var(--radius-sm);
            padding: 3px 10px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .top-info-bar {
            background: var(--bg-black);
            height: 36px;
            display: flex;
            align-items: center;
            font-size: 12px;
            color: var(--text-muted);
        }
        .top-info-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .top-info-bar .domain-hint {
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 0.03em;
        }
        .top-info-bar .quick-links a {
            color: var(--text-muted);
            font-size: 12px;
            transition: color var(--transition-base);
            margin-left: 12px;
        }
        .top-info-bar .quick-links a:hover {
            color: var(--accent-primary);
        }
        .main-nav {
            height: 64px;
            background: var(--bg-primary);
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: background var(--transition-base), border-color var(--transition-base);
        }
        .main-nav.scrolled {
            background: #0A0C0F;
            border-bottom-color: rgba(255, 255, 255, 0.15);
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .brand-section {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo-graphic {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, rgba(245, 166, 35, 0.25), rgba(45, 212, 191, 0.15));
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(245, 166, 35, 0.35);
            flex-shrink: 0;
        }
        .logo-graphic svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: var(--accent-primary);
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .brand-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.01em;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: color var(--transition-base);
            position: relative;
            padding: 4px 0;
        }
        .nav-links li a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-primary);
            transition: width var(--transition-base);
        }
        .nav-links li a:hover {
            color: var(--text-primary);
        }
        .nav-links li a:hover::after {
            width: 100%;
        }
        .nav-links li a.active {
            color: var(--accent-primary);
        }
        .nav-links li a.active::after {
            width: 100%;
        }
        .nav-cta {
            display: flex;
            align-items: center;
        }
        .btn-primary-custom {
            display: inline-block;
            background: var(--accent-primary);
            color: var(--bg-primary);
            font-weight: 600;
            font-size: 14px;
            border: none;
            border-radius: var(--radius-md);
            padding: 10px 22px;
            transition: all var(--transition-base);
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-primary-custom:hover {
            background: #e69615;
            color: var(--bg-primary);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(245, 166, 35, 0.3);
        }
        .btn-primary-custom:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.5);
        }
        .btn-primary-custom:active {
            background: #d4880f;
            transform: translateY(0);
        }
        .btn-secondary-custom {
            display: inline-block;
            background: transparent;
            border: 1px solid var(--border-color-light);
            color: var(--text-primary);
            font-weight: 500;
            font-size: 14px;
            border-radius: var(--radius-md);
            padding: 10px 22px;
            transition: all var(--transition-base);
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-secondary-custom:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
        }
        .btn-secondary-custom:active {
            background: rgba(255, 255, 255, 0.08);
        }
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 22px;
            cursor: pointer;
            padding: 6px;
        }
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -100%;
            width: 280px;
            height: 100vh;
            background: var(--bg-card);
            z-index: 1100;
            transition: right 0.3s ease;
            padding: 24px;
            overflow-y: auto;
            border-left: 1px solid var(--border-color);
        }
        .mobile-drawer.open {
            right: 0;
        }
        .mobile-drawer .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
        }
        .mobile-drawer .drawer-close {
            background: none;
            border: none;
            color: var(--text-secondary);
            font-size: 18px;
            cursor: pointer;
        }
        .mobile-drawer .drawer-links {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
        }
        .mobile-drawer .drawer-links li {
            margin-bottom: 8px;
        }
        .mobile-drawer .drawer-links a {
            display: block;
            padding: 10px 14px;
            border-radius: var(--radius-md);
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            transition: all var(--transition-base);
        }
        .mobile-drawer .drawer-links a:hover,
        .mobile-drawer .drawer-links a.active {
            background: rgba(245, 166, 35, 0.12);
            color: var(--accent-primary);
        }
        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: rgba(0, 0, 0, 0.85);
            z-index: 1090;
            display: none;
        }
        .drawer-overlay.show {
            display: block;
        }
        .page-hero {
            position: relative;
            min-height: 360px;
            display: flex;
            align-items: center;
            background: var(--bg-primary);
            border-bottom: 1px solid var(--border-color);
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(12, 14, 17, 0.92) 10%, rgba(12, 14, 17, 0.55) 60%, rgba(12, 14, 17, 0.85) 100%);
            z-index: 1;
        }
        .page-hero .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/coverpic/cover-1.webp');
            background-size: cover;
            background-position: center;
            z-index: 0;
            opacity: 0.45;
            background-color: var(--bg-card);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            padding-top: 64px;
            padding-bottom: 64px;
        }
        .page-hero .hero-badge {
            display: inline-block;
            background: rgba(245, 166, 35, 0.15);
            border: 1px solid rgba(245, 166, 35, 0.35);
            color: var(--accent-primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: var(--radius-sm);
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }
        .page-hero h1 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 16px;
            color: var(--text-primary);
            max-width: 700px;
        }
        .page-hero .hero-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 600px;
            margin-bottom: 24px;
        }
        .feature-strip-section {
            padding-top: 64px;
            padding-bottom: 80px;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header h2 {
            font-size: 26px;
            font-weight: 600;
            line-height: 1.35;
            color: var(--text-primary);
            margin-bottom: 12px;
        }
        .section-header .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 680px;
            margin-bottom: 0;
        }
        .feature-strip-item {
            display: flex;
            align-items: center;
            gap: 40px;
            margin-bottom: 56px;
            padding: 24px;
            background: var(--bg-secondary);
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-color);
            transition: all var(--transition-smooth);
        }
        .feature-strip-item:hover {
            border-color: rgba(245, 166, 35, 0.3);
            box-shadow: var(--shadow-card-hover);
        }
        .feature-strip-item .strip-image {
            flex: 0 0 320px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background-color: var(--bg-card);
            position: relative;
            min-height: 220px;
        }
        .feature-strip-item .strip-image img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            display: block;
        }
        .feature-strip-item .strip-image .img-fallback {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            color: var(--text-muted);
            font-size: 28px;
        }
        .feature-strip-item .strip-content {
            flex: 1;
        }
        .feature-strip-item .strip-content h3 {
            font-size: 20px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        .feature-strip-item .strip-content p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 14px;
        }
        .feature-strip-item .strip-content .strip-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .feature-strip-item.reverse {
            flex-direction: row-reverse;
        }
        .strip-accent-bar {
            width: 4px;
            height: 60px;
            border-radius: 4px;
            flex-shrink: 0;
        }
        .strip-accent-bar.orange {
            background: var(--accent-primary);
        }
        .strip-accent-bar.teal {
            background: var(--accent-secondary);
        }
        .strip-accent-bar.warm-gray {
            background: #8A8F98;
        }
        .cta-banner {
            background: var(--bg-card);
            border: 1px solid rgba(245, 166, 35, 0.25);
            border-radius: var(--radius-xl);
            padding: 36px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .cta-banner .cta-text h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .cta-banner .cta-text p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 0;
        }
        .site-footer {
            background: var(--bg-black);
            padding-top: 48px;
            padding-bottom: 32px;
            border-top: 1px solid var(--border-color);
        }
        .site-footer .footer-top {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid var(--border-color);
        }
        .site-footer .footer-brand {
            flex: 1 1 260px;
        }
        .site-footer .footer-brand .brand-text {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        .site-footer .footer-brand .brand-statement {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .site-footer .footer-col {
            flex: 0 1 150px;
        }
        .site-footer .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 14px;
        }
        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 8px;
        }
        .site-footer .footer-col ul li a {
            font-size: 13px;
            color: var(--text-muted);
            transition: color var(--transition-base);
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--accent-primary);
        }
        .site-footer .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 24px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .site-footer .footer-bottom a {
            color: var(--text-muted);
            transition: color var(--transition-base);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--accent-primary);
        }
        .site-footer .footer-bottom .footer-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .site-footer .footer-bottom .beian-info {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        @media (max-width: 992px) {
            .nav-links {
                display: none;
            }
            .hamburger-btn {
                display: block;
            }
            .nav-cta {
                margin-left: auto;
                margin-right: 12px;
            }
            .feature-strip-item,
            .feature-strip-item.reverse {
                flex-direction: column;
                align-items: stretch;
                gap: 20px;
            }
            .feature-strip-item .strip-image {
                flex: 0 0 auto;
                min-height: 180px;
            }
            .feature-strip-item .strip-image img {
                height: 180px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
        }
        @media (max-width: 768px) {
            .section-padding {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .feature-strip-section {
                padding-top: 40px;
                padding-bottom: 48px;
            }
            .feature-strip-item {
                padding: 16px;
                margin-bottom: 32px;
            }
            .feature-strip-item .strip-content h3 {
                font-size: 17px;
            }
            .feature-strip-item .strip-content p {
                font-size: 14px;
                line-height: 1.7;
            }
            .page-hero h1 {
                font-size: 24px;
            }
            .page-hero {
                min-height: 260px;
            }
            .page-hero .container {
                padding-top: 36px;
                padding-bottom: 36px;
            }
            .top-info-bar {
                display: none;
            }
            .site-footer .footer-top {
                gap: 24px;
            }
            .site-footer .footer-col {
                flex: 1 1 120px;
            }
            .cta-banner {
                flex-direction: column;
                align-items: flex-start;
                padding: 28px 24px;
            }
        }
        @media (max-width: 576px) {
            .nav-cta {
                display: none;
            }
            .feature-strip-item .strip-image {
                min-height: 140px;
            }
            .feature-strip-item .strip-image img {
                height: 140px;
            }
            .feature-strip-item .strip-content h3 {
                font-size: 16px;
            }
            .feature-strip-item .strip-content p {
                font-size: 13px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .page-hero h1 {
                font-size: 22px;
                line-height: 1.35;
            }
            .page-hero .hero-desc {
                font-size: 14px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0C0E11;
            --bg-secondary: #14171C;
            --bg-card: #1A1E24;
            --bg-black: #07090B;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-color-light: rgba(255, 255, 255, 0.15);
            --accent-primary: #F5A623;
            --accent-secondary: #2DD4BF;
            --text-primary: #E8EAED;
            --text-secondary: #A0A5AD;
            --text-muted: #6B7078;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 10px;
            --radius-xl: 12px;
            --radius-2xl: 14px;
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.4);
            --shadow-card-hover: 0 8px 28px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(245, 166, 35, 0.16);
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --transition-base: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-smooth: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-stack);
            font-size: 15px;
            font-weight: 400;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            min-height: 100vh;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        a:hover {
            color: var(--accent-primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: var(--font-stack);
        }
        button:focus, input:focus, select:focus, textarea:focus {
            outline: none;
        }
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section-padding {
            padding-top: 80px;
            padding-bottom: 80px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 680px;
            margin-bottom: 2rem;
        }
        .badge-tag {
            display: inline-block;
            background: var(--bg-card);
            border: 1px solid var(--accent-secondary);
            color: var(--accent-secondary);
            border-radius: var(--radius-sm);
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 500;
            transition: transform var(--transition-base);
            cursor: default;
        }
        .badge-tag:hover {
            transform: translateY(-2px);
        }
        .accent-badge {
            display: inline-block;
            background: rgba(245, 166, 35, 0.12);
            border: 1px solid rgba(245, 166, 35, 0.4);
            color: var(--accent-primary);
            border-radius: var(--radius-sm);
            padding: 3px 10px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .top-info-bar {
            background: var(--bg-black);
            height: 36px;
            display: flex;
            align-items: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .top-info-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .top-info-bar .domain-hint {
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 0.03em;
        }
        .top-info-bar .quick-links a {
            color: var(--text-muted);
            font-size: 12px;
            transition: color var(--transition-base);
        }
        .top-info-bar .quick-links a:hover {
            color: var(--accent-primary);
        }
        .main-nav {
            height: 64px;
            background: var(--bg-primary);
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: background var(--transition-base), border-color var(--transition-base);
        }
        .main-nav.scrolled {
            background: #0A0C0F;
            border-bottom-color: rgba(255, 255, 255, 0.15);
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .brand-section {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo-graphic {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, rgba(245, 166, 35, 0.25), rgba(45, 212, 191, 0.15));
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(245, 166, 35, 0.35);
            flex-shrink: 0;
        }
        .logo-graphic svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: var(--accent-primary);
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .brand-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.01em;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: color var(--transition-base);
            position: relative;
            padding: 4px 0;
        }
        .nav-links li a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-primary);
            transition: width var(--transition-base);
        }
        .nav-links li a:hover::after,
        .nav-links li a.active::after {
            width: 100%;
        }
        .nav-links li a.active {
            color: var(--accent-primary);
        }
        .nav-links li a:hover {
            color: var(--accent-primary);
        }
        .btn-primary-custom {
            display: inline-block;
            background: var(--accent-primary);
            color: #0C0E11;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-md);
            padding: 10px 22px;
            font-size: 14px;
            transition: filter var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
            cursor: pointer;
        }
        .btn-primary-custom:hover {
            filter: brightness(1.1);
            transform: translateY(-2px);
            color: #0C0E11;
        }
        .btn-primary-custom:focus {
            box-shadow: 0 0 0 2px rgba(245, 166, 35, 0.5);
        }
        .btn-primary-custom:active {
            filter: brightness(0.95);
            transform: translateY(0);
        }
        .btn-secondary-custom {
            display: inline-block;
            background: transparent;
            color: var(--text-primary);
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: var(--radius-md);
            padding: 10px 22px;
            font-size: 14px;
            transition: border-color var(--transition-base), color var(--transition-base), background var(--transition-base);
            cursor: pointer;
        }
        .btn-secondary-custom:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
        }
        .btn-secondary-custom:active {
            background: rgba(255, 255, 255, 0.08);
        }
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 22px;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-base);
        }
        .hamburger-btn:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            width: 300px;
            max-width: 85vw;
            background: #0A0C0F;
            z-index: 1100;
            padding: 28px 24px;
            transform: translateX(100%);
            transition: transform var(--transition-smooth);
            overflow-y: auto;
            border-left: 1px solid var(--border-color);
        }
        .mobile-drawer.open {
            transform: translateX(0);
        }
        .mobile-drawer .close-btn {
            background: none;
            border: none;
            color: var(--text-secondary);
            font-size: 24px;
            cursor: pointer;
            margin-bottom: 20px;
        }
        .mobile-drawer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .mobile-drawer ul li {
            margin-bottom: 12px;
        }
        .mobile-drawer ul li a {
            font-size: 16px;
            color: var(--text-primary);
            padding: 8px 0;
            display: block;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .mobile-drawer ul li a.active {
            color: var(--accent-primary);
        }
        .drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.85);
            z-index: 1090;
            opacity: 0;
            transition: opacity var(--transition-base);
        }
        .drawer-overlay.visible {
            display: block;
            opacity: 1;
        }
        .inner-hero {
            position: relative;
            min-height: 280px;
            background: var(--bg-secondary);
            display: flex;
            align-items: center;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }
        .inner-hero .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/coverpic/cover-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
        }
        .inner-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(12, 14, 17, 0.92) 0%, rgba(12, 14, 17, 0.65) 50%, rgba(12, 14, 17, 0.85) 100%);
        }
        .inner-hero .container {
            position: relative;
            z-index: 2;
        }
        .inner-hero h1 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 14px;
            color: var(--text-primary);
        }
        .inner-hero .hero-sub {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 620px;
            line-height: 1.75;
        }
        .version-card-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .version-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .version-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(245, 166, 35, 0.4);
        }
        .version-card .card-img {
            height: 160px;
            background: var(--bg-secondary);
            overflow: hidden;
            position: relative;
            flex-shrink: 0;
        }
        .version-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .version-card .card-body {
            padding: 22px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .version-card .version-badge {
            display: inline-block;
            background: rgba(45, 212, 191, 0.12);
            border: 1px solid rgba(45, 212, 191, 0.5);
            color: var(--accent-secondary);
            border-radius: var(--radius-sm);
            padding: 3px 12px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .version-card .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .version-card .card-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
        }
        .version-card .spec-row {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 14px;
            margin-top: auto;
        }
        .version-card .spec-item {
            display: flex;
            justify-content: space-between;
            gap: 12px;
            padding: 6px 0;
            font-size: 13px;
        }
        .version-card .spec-item .spec-label {
            color: var(--text-muted);
            flex-shrink: 0;
        }
        .version-card .spec-item .spec-value {
            color: var(--text-primary);
            font-weight: 500;
            text-align: right;
        }
        .section-heading {
            font-size: 24px;
            font-weight: 600;
            line-height: 1.35;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .section-heading .accent-char {
            color: var(--accent-primary);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--bg-secondary);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .compare-table th,
        .compare-table td {
            padding: 14px 18px;
            text-align: left;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 14px;
        }
        .compare-table th {
            background: rgba(245, 166, 35, 0.08);
            color: var(--accent-primary);
            font-weight: 600;
            font-size: 13px;
            letter-spacing: 0.02em;
            text-transform: uppercase;
            border-bottom: 1px solid rgba(245, 166, 35, 0.2);
        }
        .compare-table tr:last-child td {
            border-bottom: none;
        }
        .compare-table td:first-child {
            color: var(--text-secondary);
            font-weight: 500;
            white-space: nowrap;
        }
        .compare-table td:not(:first-child) {
            color: var(--text-primary);
        }
        .table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-color);
        }
        .cta-banner {
            background: var(--bg-secondary);
            border: 1px solid rgba(245, 166, 35, 0.25);
            border-radius: var(--radius-xl);
            padding: 32px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.3);
        }
        .cta-banner .cta-text h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-primary);
        }
        .cta-banner .cta-text p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }
        .faq-item {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            margin-bottom: 12px;
            overflow: hidden;
            transition: background var(--transition-base);
        }
        .faq-item .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-primary);
            user-select: none;
            transition: color var(--transition-base);
        }
        .faq-item .faq-question:hover {
            color: var(--accent-primary);
        }
        .faq-item .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: transform var(--transition-base), border-color var(--transition-base);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
        }
        .faq-item.active {
            background: var(--bg-card);
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            border-color: var(--accent-primary);
        }
        .faq-item.active .faq-answer {
            display: block;
        }
        .site-footer {
            background: var(--bg-black);
            padding: 48px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand .brand-text {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .footer-brand .brand-statement {
            font-size: 12px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }
        .footer-col h4 {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 13px;
            color: var(--text-muted);
            transition: color var(--transition-base);
            line-height: 1.5;
        }
        .footer-col ul li a:hover {
            color: var(--accent-primary);
        }
        .footer-bottom {
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .footer-bottom .copyright {
            line-height: 1.6;
        }
        .footer-bottom .footer-links {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .footer-bottom .footer-links a {
            color: var(--text-muted);
            font-size: 12px;
            transition: color var(--transition-base);
        }
        .footer-bottom .footer-links a:hover {
            color: var(--accent-primary);
        }
        @media (max-width: 991px) {
            .nav-links {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger-btn {
                display: block;
            }
            .mobile-drawer {
                display: block;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
            .version-card-grid {
                grid-template-columns: 1fr;
            }
            .inner-hero h1 {
                font-size: 26px;
            }
            .inner-hero {
                min-height: 220px;
            }
            .section-padding {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .cta-banner {
                padding: 24px;
            }
        }
        @media (max-width: 767px) {
            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .main-nav {
                height: 56px;
            }
            .brand-text {
                font-size: 16px;
            }
            .inner-hero h1 {
                font-size: 22px;
            }
            .section-heading {
                font-size: 20px;
            }
        }
        @media (max-width: 575px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .version-card .card-body {
                padding: 16px;
            }
            .version-card .card-img {
                height: 130px;
            }
            .cta-banner {
                flex-direction: column;
                align-items: flex-start;
            }
            .compare-table th,
            .compare-table td {
                padding: 10px 12px;
                font-size: 12px;
            }
            .faq-item .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }
            .faq-item .faq-answer {
                padding: 0 16px 14px;
                font-size: 13px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0C0E11;
            --bg-secondary: #14171C;
            --bg-card: #1A1E24;
            --bg-black: #07090B;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-color-light: rgba(255, 255, 255, 0.15);
            --accent-primary: #F5A623;
            --accent-secondary: #2DD4BF;
            --text-primary: #E8EAED;
            --text-secondary: #A0A5AD;
            --text-muted: #6B7078;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 10px;
            --radius-xl: 12px;
            --radius-2xl: 14px;
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.4);
            --shadow-card-hover: 0 8px 28px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(245, 166, 35, 0.16);
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --transition-base: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-smooth: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-stack);
            font-size: 15px;
            font-weight: 400;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            min-height: 100vh;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        a:hover {
            color: var(--accent-primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: var(--font-stack);
        }
        button:focus, input:focus, select:focus, textarea:focus {
            outline: none;
        }
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section-padding {
            padding-top: 80px;
            padding-bottom: 80px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 680px;
            margin-bottom: 2rem;
        }
        .badge-tag {
            display: inline-block;
            background: var(--bg-card);
            border: 1px solid var(--accent-secondary);
            color: var(--accent-secondary);
            border-radius: var(--radius-sm);
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 500;
            transition: transform var(--transition-base);
            cursor: default;
        }
        .badge-tag:hover {
            transform: translateY(-2px);
        }
        .accent-badge {
            display: inline-block;
            background: rgba(245, 166, 35, 0.12);
            border: 1px solid rgba(245, 166, 35, 0.4);
            color: var(--accent-primary);
            border-radius: var(--radius-sm);
            padding: 3px 10px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .top-info-bar {
            background: var(--bg-black);
            height: 36px;
            display: flex;
            align-items: center;
            font-size: 12px;
            border-bottom: 1px solid var(--border-color);
        }
        .top-info-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .top-info-bar .domain-hint {
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 0.03em;
        }
        .top-info-bar .quick-links a {
            color: var(--text-muted);
            font-size: 12px;
            transition: color var(--transition-base);
            margin-left: 16px;
        }
        .top-info-bar .quick-links a:hover {
            color: var(--accent-primary);
        }
        .main-nav {
            height: 64px;
            background: var(--bg-primary);
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: background var(--transition-base), border-color var(--transition-base);
        }
        .main-nav.scrolled {
            background: #0A0C0F;
            border-bottom-color: rgba(255, 255, 255, 0.15);
        }
        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .brand-section {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo-graphic {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, rgba(245, 166, 35, 0.25), rgba(45, 212, 191, 0.15));
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(245, 166, 35, 0.35);
            flex-shrink: 0;
        }
        .logo-graphic svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: var(--accent-primary);
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }
        .brand-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.01em;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: color var(--transition-base);
            position: relative;
            padding: 4px 0;
        }
        .nav-links li a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-primary);
            transition: width var(--transition-base);
        }
        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--accent-primary);
        }
        .nav-links li a.active::after {
            width: 100%;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--accent-primary);
            color: #0C0E11;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-md);
            padding: 10px 20px;
            font-size: 14px;
            transition: all var(--transition-base);
            cursor: pointer;
            letter-spacing: 0.02em;
        }
        .btn-primary-custom:hover {
            background: #FFB84D;
            color: #0C0E11;
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(245, 166, 35, 0.35);
        }
        .btn-primary-custom:focus {
            box-shadow: 0 0 0 2px rgba(245, 166, 35, 0.5);
        }
        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--text-primary);
            font-weight: 500;
            border: 1px solid var(--border-color-light);
            border-radius: var(--radius-md);
            padding: 10px 20px;
            font-size: 14px;
            transition: all var(--transition-base);
            cursor: pointer;
            letter-spacing: 0.02em;
        }
        .btn-outline-custom:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
        }
        .hamburger-btn {
            display: none;
            background: transparent;
            border: 1px solid var(--border-color-light);
            color: var(--text-primary);
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            font-size: 18px;
            cursor: pointer;
            transition: all var(--transition-base);
        }
        .hamburger-btn:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
        }
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            right: -100%;
            width: 320px;
            max-width: 85vw;
            height: 100vh;
            background: var(--bg-black);
            z-index: 1100;
            transition: right var(--transition-smooth);
            padding: 24px;
            overflow-y: auto;
            border-left: 1px solid var(--border-color);
        }
        .mobile-drawer.open {
            right: 0;
        }
        .mobile-drawer-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.85);
            z-index: 1090;
        }
        .mobile-drawer-overlay.open {
            display: block;
        }
        .mobile-drawer .drawer-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
        }
        .mobile-drawer .drawer-header .close-btn {
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 22px;
            cursor: pointer;
        }
        .mobile-drawer .drawer-nav {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .mobile-drawer .drawer-nav li {
            margin-bottom: 8px;
        }
        .mobile-drawer .drawer-nav li a {
            display: block;
            padding: 12px 16px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-primary);
            border-radius: var(--radius-md);
            transition: all var(--transition-base);
        }
        .mobile-drawer .drawer-nav li a:hover,
        .mobile-drawer .drawer-nav li a.active {
            background: var(--bg-card);
            color: var(--accent-primary);
        }
        .inner-hero {
            position: relative;
            min-height: 45vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            background-color: var(--bg-black);
        }
        .inner-hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/coverpic/cover-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
        }
        .inner-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(12,14,17,0.92) 0%, rgba(12,14,17,0.6) 60%, rgba(12,14,17,0.25) 100%);
        }
        .inner-hero .hero-content {
            position: relative;
            z-index: 2;
            padding: 60px 0;
        }
        .inner-hero h1 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .inner-hero .hero-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 0;
        }
        .hero-breadcrumb {
            display: flex;
            gap: 8px;
            align-items: center;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .hero-breadcrumb a {
            color: var(--text-secondary);
        }
        .hero-breadcrumb a:hover {
            color: var(--accent-primary);
        }
        .hero-breadcrumb .sep {
            color: var(--text-muted);
        }
        .scenario-article {
            background: var(--bg-primary);
            padding: 60px 0;
        }
        .scenario-item {
            display: flex;
            align-items: stretch;
            gap: 32px;
            margin-bottom: 48px;
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            padding: 28px;
            border: 1px solid var(--border-color);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .scenario-item:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(245, 166, 35, 0.25);
        }
        .scenario-item .scene-tag-bar {
            position: absolute;
            top: 0;
            left: 0;
            width: 6px;
            height: 100%;
            border-radius: var(--radius-xl) 0 0 var(--radius-xl);
        }
        .scenario-item .scenario-image {
            flex: 0 0 320px;
            max-width: 320px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: #1A1E24;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 200px;
        }
        .scenario-item .scenario-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }
        .scenario-item .scenario-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .scenario-item .scenario-content h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        .scenario-item .scenario-content p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 14px;
        }
        .scenario-item .scenario-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .scenario-item .scenario-tags .tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            border-radius: var(--radius-sm);
            padding: 4px 12px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-color-light);
            color: var(--text-secondary);
            transition: all var(--transition-base);
        }
        .scenario-item .scenario-tags .tag:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
        }
        .scenario-item.reverse {
            flex-direction: row-reverse;
        }
        .scenario-item.reverse .scene-tag-bar {
            left: auto;
            right: 0;
            border-radius: 0 var(--radius-xl) var(--radius-xl) 0;
        }
        .cta-banner {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            padding: 36px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            margin: 60px 0;
        }
        .cta-banner .cta-text h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-primary);
        }
        .cta-banner .cta-text p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 0;
        }
        .site-footer {
            background: var(--bg-black);
            padding: 48px 0;
            border-top: 1px solid var(--border-color);
            margin-top: 60px;
        }
        .site-footer .footer-top {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            margin-bottom: 32px;
        }
        .site-footer .footer-brand {
            flex: 0 0 260px;
            max-width: 260px;
        }
        .site-footer .footer-brand .brand-text {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .site-footer .brand-statement {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }
        .site-footer .footer-col {
            flex: 1;
            min-width: 140px;
        }
        .site-footer .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 14px;
        }
        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 8px;
        }
        .site-footer .footer-col ul li a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: color var(--transition-base);
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--accent-primary);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .site-footer .footer-bottom .bottom-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .site-footer .footer-bottom .bottom-links a {
            color: var(--text-muted);
            font-size: 12px;
        }
        .site-footer .footer-bottom .bottom-links a:hover {
            color: var(--accent-primary);
        }
        .scenario-intro-section {
            background: var(--bg-secondary);
            border-radius: var(--radius-xl);
            padding: 36px;
            margin-bottom: 48px;
            border: 1px solid var(--border-color);
            display: flex;
            align-items: flex-start;
            gap: 20px;
            flex-wrap: wrap;
        }
        .scenario-intro-section .intro-icon {
            flex: 0 0 56px;
            height: 56px;
            border-radius: 12px;
            background: rgba(245, 166, 35, 0.12);
            border: 1px solid rgba(245, 166, 35, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--accent-primary);
        }
        .scenario-intro-section .intro-content {
            flex: 1;
            min-width: 280px;
        }
        .scenario-intro-section .intro-content h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .scenario-intro-section .intro-content p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }
        @media (max-width: 991px) {
            .nav-links {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger-btn {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .mobile-drawer, .mobile-drawer-overlay {
                display: block;
            }
            .scenario-item {
                flex-direction: column !important;
            }
            .scenario-item .scenario-image {
                flex: none;
                max-width: 100%;
                width: 100%;
                min-height: 180px;
            }
            .scenario-item .scenario-image img {
                width: 100%;
                height: 180px;
                object-fit: cover;
            }
            .section-padding {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .inner-hero h1 {
                font-size: 26px;
            }
            .site-footer .footer-top {
                gap: 24px;
            }
            .site-footer .footer-brand {
                flex: 0 0 100%;
                max-width: 100%;
            }
        }
        @media (max-width: 576px) {
            .inner-hero {
                min-height: 40vh;
            }
            .inner-hero h1 {
                font-size: 22px;
            }
            .inner-hero .hero-desc {
                font-size: 14px;
            }
            .scenario-item {
                padding: 18px;
                gap: 18px;
            }
            .scenario-item .scenario-content h3 {
                font-size: 16px;
            }
            .cta-banner {
                padding: 24px;
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: category4 */
:root {
            --bg-primary: #0C0E11;
            --bg-secondary: #14171C;
            --bg-card: #1A1E24;
            --bg-black: #07090B;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-color-light: rgba(255, 255, 255, 0.15);
            --accent-primary: #F5A623;
            --accent-secondary: #2DD4BF;
            --text-primary: #E8EAED;
            --text-secondary: #A0A5AD;
            --text-muted: #6B7078;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 10px;
            --radius-xl: 12px;
            --radius-2xl: 14px;
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.4);
            --shadow-card-hover: 0 8px 28px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(245, 166, 35, 0.16);
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --transition-base: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-smooth: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

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

        body {
            font-family: var(--font-stack);
            font-size: 15px;
            font-weight: 400;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font-stack);
        }

        button:focus,
        input:focus,
        select:focus,
        textarea:focus {
            outline: none;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section-padding {
            padding-top: 80px;
            padding-bottom: 80px;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 680px;
            margin-bottom: 2rem;
        }

        .badge-tag {
            display: inline-block;
            background: var(--bg-card);
            border: 1px solid var(--accent-secondary);
            color: var(--accent-secondary);
            border-radius: var(--radius-sm);
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 500;
            transition: transform var(--transition-base);
            cursor: default;
        }

        .badge-tag:hover {
            transform: translateY(-2px);
        }

        .accent-badge {
            display: inline-block;
            background: rgba(245, 166, 35, 0.12);
            border: 1px solid rgba(245, 166, 35, 0.4);
            color: var(--accent-primary);
            border-radius: var(--radius-sm);
            padding: 3px 10px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .top-info-bar {
            background: var(--bg-black);
            height: 36px;
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--border-color);
        }

        .top-info-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .top-info-bar .domain-hint {
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 0.03em;
        }

        .top-info-bar .quick-links a {
            color: var(--text-muted);
            font-size: 12px;
            transition: color var(--transition-base);
        }

        .top-info-bar .quick-links a:hover {
            color: var(--accent-primary);
        }

        .main-nav {
            height: 64px;
            background: var(--bg-primary);
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: background var(--transition-base), border-color var(--transition-base);
        }

        .main-nav.scrolled {
            background: #0A0C0F;
            border-bottom-color: rgba(255, 255, 255, 0.15);
        }

        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .brand-section {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .logo-graphic {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, rgba(245, 166, 35, 0.25), rgba(45, 212, 191, 0.15));
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(245, 166, 35, 0.35);
            flex-shrink: 0;
        }

        .logo-graphic svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: var(--accent-primary);
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .brand-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.01em;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: color var(--transition-base);
            position: relative;
            padding: 4px 0;
        }

        .nav-links li a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-primary);
            transition: width var(--transition-base);
        }

        .nav-links li a:hover::after,
        .nav-links li a.active::after {
            width: 100%;
        }

        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--accent-primary);
        }

        .nav-cta {
            display: flex;
            align-items: center;
        }

        .btn-primary-custom {
            background: var(--accent-primary);
            color: #0C0E11;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-md);
            padding: 12px 24px;
            font-size: 14px;
            transition: filter var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
            display: inline-block;
            text-decoration: none;
            cursor: pointer;
        }

        .btn-primary-custom:hover {
            filter: brightness(1.1);
            transform: translateY(2px);
            color: #0C0E11;
            box-shadow: 0 6px 18px rgba(245, 166, 35, 0.25);
        }

        .btn-primary-custom:focus {
            box-shadow: 0 0 0 2px rgba(245, 166, 35, 0.5);
        }

        .btn-outline-custom {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text-primary);
            border-radius: var(--radius-md);
            padding: 12px 24px;
            font-size: 14px;
            font-weight: 500;
            transition: border-color var(--transition-base), color var(--transition-base), background var(--transition-base);
            display: inline-block;
            text-decoration: none;
            cursor: pointer;
        }

        .btn-outline-custom:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
        }

        .hamburger-btn {
            display: none;
            background: transparent;
            border: 1px solid var(--border-color-light);
            border-radius: var(--radius-sm);
            color: var(--text-primary);
            padding: 8px 12px;
            font-size: 16px;
            cursor: pointer;
            transition: border-color var(--transition-base), color var(--transition-base);
        }

        .hamburger-btn:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
        }

        .mobile-drawer {
            position: fixed;
            top: 0;
            right: 0;
            width: 320px;
            max-width: 85vw;
            height: 100vh;
            background: var(--bg-secondary);
            z-index: 2000;
            transform: translateX(100%);
            transition: transform var(--transition-smooth);
            padding: 24px;
            overflow-y: auto;
            border-left: 1px solid var(--border-color);
        }

        .mobile-drawer.open {
            transform: translateX(0);
        }

        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.85);
            z-index: 1999;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-base);
        }

        .drawer-overlay.open {
            opacity: 1;
            pointer-events: auto;
        }

        .mobile-drawer .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
        }

        .mobile-drawer .drawer-close {
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 24px;
            cursor: pointer;
        }

        .mobile-drawer .drawer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .mobile-drawer .drawer-links li {
            margin-bottom: 16px;
        }

        .mobile-drawer .drawer-links a {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-primary);
            display: block;
            padding: 8px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .mobile-drawer .drawer-links a.active {
            color: var(--accent-primary);
        }

        .mobile-drawer .drawer-cta {
            margin-top: auto;
            padding-top: 24px;
        }

        .hero-inner {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            padding: 64px 0 48px;
            background: linear-gradient(135deg, rgba(12, 14, 17, 0.92) 0%, rgba(12, 14, 17, 0.55) 50%, rgba(12, 14, 17, 0.85) 100%);
            overflow: hidden;
        }

        .hero-inner::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, rgba(12, 14, 17, 0.85) 0%, rgba(12, 14, 17, 0.35) 100%);
            pointer-events: none;
        }

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

        .hero-inner h1 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 16px;
            color: var(--text-primary);
            letter-spacing: 0.01em;
        }

        .hero-inner .hero-sub {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 640px;
            margin-bottom: 24px;
        }

        .hero-inner .hero-badge-row {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }

        .hero-inner .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .filter-tag-bar {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 32px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .filter-tag {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 500;
            cursor: pointer;
            transition: border-color var(--transition-base), color var(--transition-base), background var(--transition-base);
        }

        .filter-tag:hover,
        .filter-tag.active {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
            background: rgba(245, 166, 35, 0.06);
        }

        .filter-tag.active {
            background: rgba(245, 166, 35, 0.1);
            font-weight: 600;
        }

        .param-card-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-bottom: 48px;
        }

        .param-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            padding: 24px;
            transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .param-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        }

        .param-card.accent-orange::before {
            background: var(--accent-primary);
        }

        .param-card.accent-teal::before {
            background: var(--accent-secondary);
        }

        .param-card.accent-gray::before {
            background: #8A8F98;
        }

        .param-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(245, 166, 35, 0.25);
        }

        .param-card .param-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 20px;
        }

        .param-card .param-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 18px;
        }

        .param-card .param-icon.orange-icon {
            background: rgba(245, 166, 35, 0.15);
            color: var(--accent-primary);
        }

        .param-card .param-icon.teal-icon {
            background: rgba(45, 212, 191, 0.15);
            color: var(--accent-secondary);
        }

        .param-card .param-icon.gray-icon {
            background: rgba(138, 143, 152, 0.15);
            color: #8A8F98;
        }

        .param-card .param-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.4;
            margin: 0;
        }

        .param-card .param-meta {
            font-size: 13px;
            color: var(--text-muted);
        }

        .param-card .param-body {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .param-card .param-kv {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .param-card .param-kv:last-child {
            border-bottom: none;
        }

        .param-card .kv-label {
            font-size: 13px;
            color: var(--text-secondary);
        }

        .param-card .kv-value {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            text-align: right;
        }

        .param-card .kv-value.highlight {
            color: var(--accent-primary);
        }

        .param-card .kv-value.teal {
            color: var(--accent-secondary);
        }

        .param-card .param-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            margin-top: 4px;
        }

        .param-card .param-tags span {
            font-size: 12px;
            padding: 3px 10px;
            border-radius: 4px;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-secondary);
        }

        .param-summary-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            padding: 28px;
            margin-bottom: 48px;
        }

        .param-summary-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

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

        .param-summary-card .summary-item {
            text-align: center;
            padding: 16px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
        }

        .param-summary-card .summary-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--accent-primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .param-summary-card .summary-label {
            font-size: 13px;
            color: var(--text-secondary);
        }

        .cta-banner {
            background: linear-gradient(135deg, rgba(245, 166, 35, 0.12) 0%, rgba(45, 212, 191, 0.08) 100%);
            border: 1px solid rgba(245, 166, 35, 0.25);
            border-radius: var(--radius-xl);
            padding: 36px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }

        .cta-banner h2 {
            font-size: 22px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .cta-banner p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            max-width: 500px;
        }

        .site-footer {
            background: var(--bg-black);
            padding: 48px 0;
            border-top: 1px solid var(--border-color);
        }

        .site-footer .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }

        .site-footer .footer-brand {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .site-footer .footer-brand .brand-text {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
        }

        .site-footer .brand-statement {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        .site-footer .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .site-footer .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

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

        .site-footer .footer-col ul li a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: color var(--transition-base);
        }

        .site-footer .footer-col ul li a:hover {
            color: var(--accent-primary);
        }

        .site-footer .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            font-size: 12px;
            color: var(--text-muted);
        }

        .site-footer .footer-bottom .legal-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .site-footer .footer-bottom .legal-links a {
            color: var(--text-muted);
            font-size: 12px;
            transition: color var(--transition-base);
        }

        .site-footer .footer-bottom .legal-links a:hover {
            color: var(--accent-primary);
        }

        @media (max-width: 991px) {
            .nav-links {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger-btn {
                display: block;
            }
            .param-card-grid {
                grid-template-columns: 1fr;
            }
            .param-summary-card .summary-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .site-footer .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .site-footer .footer-brand {
                grid-column: span 2;
            }
        }

        @media (max-width: 767px) {
            .hero-inner {
                min-height: 320px;
                padding: 48px 0 32px;
            }
            .hero-inner h1 {
                font-size: 26px;
            }
            .hero-inner .hero-sub {
                font-size: 14px;
            }
            .param-card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .param-summary-card .summary-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .param-summary-card .summary-number {
                font-size: 26px;
            }
            .section-padding {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .cta-banner {
                padding: 24px 20px;
                flex-direction: column;
                text-align: center;
            }
            .site-footer .footer-top {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .site-footer .footer-brand {
                grid-column: span 1;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .hero-inner h1 {
                font-size: 24px;
            }
            .filter-tag-bar {
                gap: 6px;
            }
            .filter-tag {
                font-size: 12px;
                padding: 4px 10px;
            }
            .param-card {
                padding: 18px;
            }
            .param-summary-card .summary-grid {
                grid-template-columns: 1fr;
            }
            .badge-tag {
                font-size: 11px;
                padding: 3px 8px;
            }
        }

/* roulang page: category5 */
:root {
            --bg-primary: #0C0E11;
            --bg-secondary: #14171C;
            --bg-card: #1A1E24;
            --bg-black: #07090B;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-color-light: rgba(255, 255, 255, 0.15);
            --accent-primary: #F5A623;
            --accent-secondary: #2DD4BF;
            --text-primary: #E8EAED;
            --text-secondary: #A0A5AD;
            --text-muted: #6B7078;
            --radius-sm: 6px;
            --radius-md: 8px;
            --radius-lg: 10px;
            --radius-xl: 12px;
            --radius-2xl: 14px;
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.4);
            --shadow-card-hover: 0 8px 28px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(245, 166, 35, 0.16);
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --transition-base: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --transition-smooth: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

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

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

        body {
            font-family: var(--font-stack);
            font-size: 15px;
            font-weight: 400;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font-stack);
        }

        button:focus,
        input:focus,
        select:focus,
        textarea:focus {
            outline: none;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section-padding {
            padding-top: 80px;
            padding-bottom: 80px;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 680px;
            margin-bottom: 2rem;
        }

        .badge-tag {
            display: inline-block;
            background: var(--bg-card);
            border: 1px solid var(--accent-secondary);
            color: var(--accent-secondary);
            border-radius: var(--radius-sm);
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 500;
            transition: transform var(--transition-base);
            cursor: default;
        }

        .badge-tag:hover {
            transform: translateY(-2px);
        }

        .accent-badge {
            display: inline-block;
            background: rgba(245, 166, 35, 0.12);
            border: 1px solid rgba(245, 166, 35, 0.4);
            color: var(--accent-primary);
            border-radius: var(--radius-sm);
            padding: 3px 10px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        /* Top info bar */
        .top-info-bar {
            height: 36px;
            background: var(--bg-black);
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            font-size: 12px;
            position: relative;
            z-index: 1060;
        }

        .top-info-bar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .top-info-bar .domain-hint {
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 0.03em;
        }

        .top-info-bar .top-tip {
            color: var(--text-secondary);
            font-size: 12px;
        }

        .top-info-bar .quick-links a {
            color: var(--text-muted);
            font-size: 12px;
            transition: color var(--transition-base);
            margin-left: 16px;
        }

        .top-info-bar .quick-links a:hover {
            color: var(--accent-primary);
        }

        /* Main nav */
        .main-nav {
            height: 64px;
            background: var(--bg-primary);
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: background var(--transition-base), border-color var(--transition-base);
        }

        .main-nav.scrolled {
            background: #0A0C0F;
            border-bottom-color: rgba(255, 255, 255, 0.15);
        }

        .main-nav .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .brand-section {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .logo-graphic {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, rgba(245, 166, 35, 0.25), rgba(45, 212, 191, 0.15));
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(245, 166, 35, 0.35);
            flex-shrink: 0;
        }

        .logo-graphic svg {
            width: 20px;
            height: 20px;
            fill: none;
            stroke: var(--accent-primary);
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .brand-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.01em;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 24px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: color var(--transition-base);
            position: relative;
            padding: 4px 0;
            white-space: nowrap;
        }

        .nav-links li a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-primary);
            transition: width var(--transition-base);
        }

        .nav-links li a:hover::after,
        .nav-links li a.active::after {
            width: 100%;
        }

        .nav-links li a.active {
            color: var(--accent-primary);
        }

        .btn-primary-custom {
            display: inline-block;
            background: var(--accent-primary);
            color: #0C0E11;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-md);
            padding: 10px 22px;
            font-size: 14px;
            cursor: pointer;
            transition: all var(--transition-base);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }

        .btn-primary-custom:hover {
            background: #FFB840;
            color: #0C0E11;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(245, 166, 35, 0.3);
        }

        .btn-primary-custom:focus-visible {
            box-shadow: 0 0 0 2px rgba(245, 166, 35, 0.5);
            outline: none;
        }

        .btn-secondary-custom {
            display: inline-block;
            background: transparent;
            color: var(--text-primary);
            font-weight: 500;
            border: 1px solid var(--border-color-light);
            border-radius: var(--radius-md);
            padding: 10px 22px;
            font-size: 14px;
            cursor: pointer;
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .btn-secondary-custom:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
            background: rgba(245, 166, 35, 0.06);
        }

        .hamburger-btn {
            display: none;
            background: transparent;
            border: 1px solid var(--border-color-light);
            border-radius: var(--radius-md);
            color: var(--text-primary);
            font-size: 18px;
            width: 40px;
            height: 40px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-base);
        }

        .hamburger-btn:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
        }

        /* Mobile drawer */
        .mobile-drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.85);
            z-index: 1040;
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .mobile-drawer-overlay.show {
            display: block;
            opacity: 1;
        }

        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            width: 300px;
            background: var(--bg-secondary);
            z-index: 1050;
            padding: 24px 28px;
            transform: translateX(100%);
            transition: transform var(--transition-smooth);
            border-left: 1px solid var(--border-color);
        }

        .mobile-drawer.show {
            transform: translateX(0);
        }

        .mobile-drawer ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .mobile-drawer ul li a {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-primary);
            padding: 10px 0;
            display: block;
            border-bottom: 1px solid var(--border-color);
        }

        .mobile-drawer ul li a.active {
            color: var(--accent-primary);
        }

        .mobile-drawer .btn-primary-custom {
            margin-top: 24px;
            width: 100%;
            text-align: center;
        }

        /* Page Hero */
        .page-hero {
            min-height: 360px;
            background-color: var(--bg-secondary);
            background-image: url('/assets/images/coverpic/cover-6.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            display: flex;
            align-items: center;
            padding: 60px 0 50px;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(12, 14, 17, 0.9) 20%, rgba(12, 14, 17, 0.55) 60%, rgba(12, 14, 17, 0.75) 100%);
            z-index: 1;
        }

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

        .page-hero .hero-content {
            max-width: 680px;
        }

        .page-hero h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .page-hero .hero-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 560px;
        }

        .page-hero .hero-breadcrumb {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .page-hero .hero-breadcrumb a {
            color: var(--text-secondary);
        }

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

        /* Timeline Section */
        .timeline-section {
            padding: 80px 0;
            background: var(--bg-primary);
        }

        .timeline-section .section-header {
            margin-bottom: 48px;
        }

        .timeline-section .section-header h2 {
            font-size: 28px;
            font-weight: 600;
            line-height: 1.35;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

        .timeline-section .section-header p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 640px;
        }

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

        .timeline-main {
            position: relative;
            padding-left: 36px;
        }

        .timeline-main::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--accent-primary), var(--accent-secondary), rgba(255, 255, 255, 0.08));
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 40px;
            padding: 24px 28px;
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-base);
        }

        .timeline-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-item .timeline-dot {
            position: absolute;
            left: -36px;
            top: 28px;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 3px solid var(--bg-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            font-weight: 700;
            color: #0C0E11;
            z-index: 2;
        }

        .timeline-item:nth-child(odd) .timeline-dot {
            background: var(--accent-primary);
        }

        .timeline-item:nth-child(even) .timeline-dot {
            background: var(--accent-secondary);
        }

        .timeline-item .step-number {
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-primary);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 8px;
        }

        .timeline-item h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .timeline-item p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 14px;
        }

        .timeline-item .step-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 14px;
        }

        .timeline-item .step-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 14px;
            border-top: 1px solid var(--border-color);
            font-size: 13px;
            color: var(--text-muted);
        }

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

        .timeline-item .step-meta i {
            color: var(--accent-secondary);
            font-size: 13px;
        }

        .timeline-item .step-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: 14px;
            background: var(--bg-secondary);
            min-height: 120px;
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .timeline-item .step-image img {
            width: 100%;
            height: 140px;
            object-fit: cover;
        }

        .timeline-item .step-image .image-fallback {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-secondary);
            color: var(--text-muted);
            font-size: 28px;
            opacity: 0.7;
        }

        /* Sidebar Summary */
        .timeline-sidebar {
            position: sticky;
            top: 90px;
        }

        .summary-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-2xl);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            margin-bottom: 16px;
        }

        .summary-card .summary-header {
            background: var(--bg-black);
            padding: 18px 20px;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .summary-card .summary-header i {
            color: var(--accent-primary);
            font-size: 18px;
        }

        .summary-card .summary-header h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0;
        }

        .summary-card .summary-body {
            padding: 20px;
        }

        .summary-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .summary-list li {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
        }

        .summary-list li:last-child {
            border-bottom: none;
        }

        .summary-list .summary-label {
            color: var(--text-secondary);
            font-weight: 500;
        }

        .summary-list .summary-value {
            color: var(--text-primary);
            font-weight: 600;
            font-size: 13px;
            text-align: right;
        }

        .summary-list .summary-value.highlight {
            color: var(--accent-primary);
        }

        .summary-quick-links {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            padding-top: 10px;
        }

        .summary-quick-links a {
            display: inline-block;
            font-size: 12px;
            padding: 5px 12px;
            border-radius: var(--radius-sm);
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            transition: all var(--transition-base);
        }

        .summary-quick-links a:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
            background: rgba(245, 166, 35, 0.06);
        }

        /* FAQ Section */
        .faq-section {
            padding: 80px 0;
            background: var(--bg-secondary);
        }

        .faq-section .section-header {
            margin-bottom: 40px;
        }

        .faq-section .section-header h2 {
            font-size: 26px;
            font-weight: 600;
            line-height: 1.35;
            margin-bottom: 12px;
        }

        .faq-section .section-header p {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 560px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .faq-item:hover {
            border-color: rgba(245, 166, 35, 0.25);
        }

        .faq-item .faq-question {
            padding: 18px 20px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            user-select: none;
            transition: background var(--transition-base);
        }

        .faq-item .faq-question:hover {
            background: rgba(245, 166, 35, 0.04);
        }

        .faq-item .faq-question .faq-q-text {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-primary);
            flex: 1;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .faq-item .faq-question .faq-q-text .q-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(245, 166, 35, 0.12);
            color: var(--accent-primary);
            font-size: 13px;
            font-weight: 600;
            flex-shrink: 0;
        }

        .faq-item .faq-question .faq-toggle {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .faq-item .faq-question .faq-toggle::before,
        .faq-item .faq-question .faq-toggle::after {
            content: '';
            position: absolute;
            background: var(--text-secondary);
            transition: all var(--transition-base);
        }

        .faq-item .faq-question .faq-toggle::before {
            width: 14px;
            height: 2px;
            border-radius: 1px;
        }

        .faq-item .faq-question .faq-toggle::after {
            width: 2px;
            height: 14px;
            border-radius: 1px;
        }

        .faq-item.open .faq-question .faq-toggle::after {
            transform: rotate(90deg);
            opacity: 0;
        }

        .faq-item.open .faq-question .faq-toggle::before {
            background: var(--accent-primary);
        }
        .faq-item.open .faq-question .faq-toggle::after {
            background: var(--accent-primary);
        }

        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }

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

        .faq-item .faq-answer .faq-a-inner {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .faq-item.open {
            background: var(--bg-secondary);
            border-color: rgba(245, 166, 35, 0.3);
        }

        /* CTA Banner */
        .cta-banner-section {
            padding: 60px 0;
            background: var(--bg-primary);
        }

        .cta-banner {
            background: var(--bg-card);
            border: 1px solid rgba(245, 166, 35, 0.25);
            border-radius: var(--radius-2xl);
            padding: 36px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(245, 166, 35, 0.08);
            pointer-events: none;
        }

        .cta-banner .cta-text {
            flex: 1;
            position: relative;
            z-index: 1;
        }

        .cta-banner .cta-text h3 {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .cta-banner .cta-text p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
        }

        .cta-banner .btn-primary-custom {
            flex-shrink: 0;
            padding: 12px 28px;
            font-size: 15px;
            position: relative;
            z-index: 1;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-black);
            padding: 48px 0 32px;
            border-top: 1px solid var(--border-color);
        }

        .site-footer .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr 1fr 1.2fr;
            gap: 28px;
            padding-bottom: 32px;
            border-bottom: 1px solid var(--border-color);
        }

        .site-footer .footer-brand .brand-text {
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
        }

        .site-footer .footer-brand .brand-statement {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
            max-width: 180px;
            line-height: 1.6;
        }

        .site-footer .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer .footer-col ul li {
            margin-bottom: 8px;
        }

        .site-footer .footer-col ul li a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: color var(--transition-base);
        }

        .site-footer .footer-col ul li a:hover {
            color: var(--accent-primary);
        }

        .site-footer .footer-bottom {
            padding-top: 24px;
            text-align: center;
        }

        .site-footer .footer-bottom .copyright {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .site-footer .footer-bottom .legal-links {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
        }

        .site-footer .footer-bottom .legal-links a {
            color: var(--text-muted);
            font-size: 12px;
        }

        .site-footer .footer-bottom .legal-links a:hover {
            color: var(--accent-primary);
        }

        .site-footer .footer-bottom .legal-links .sep {
            color: var(--text-muted);
            opacity: 0.5;
        }

        /* Responsive */
        @media (max-width: 991px) {
            .timeline-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .timeline-sidebar {
                position: static;
                order: -1;
            }
            .site-footer .footer-top {
                grid-template-columns: 1fr 1fr 1fr;
                gap: 24px;
            }
            .site-footer .footer-brand {
                grid-column: span 3;
                margin-bottom: 16px;
            }
            .nav-links {
                gap: 16px;
            }
            .nav-links li a {
                font-size: 13px;
            }
        }

        @media (max-width: 767px) {
            .section-padding {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .page-hero {
                min-height: 260px;
                padding: 40px 0 36px;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .page-hero .hero-subtitle {
                font-size: 14px;
            }
            .timeline-section {
                padding: 48px 0;
            }
            .timeline-section .section-header h2 {
                font-size: 22px;
            }
            .timeline-main {
                padding-left: 28px;
            }
            .timeline-main::before {
                left: 10px;
            }
            .timeline-item {
                padding: 18px 16px;
                margin-bottom: 28px;
            }
            .timeline-item .timeline-dot {
                left: -28px;
                top: 20px;
                width: 22px;
                height: 22px;
                font-size: 10px;
                border-width: 2px;
            }
            .timeline-item h3 {
                font-size: 16px;
            }
            .timeline-item p {
                font-size: 14px;
            }
            .timeline-item .step-image img {
                height: 100px;
            }
            .faq-section {
                padding: 48px 0;
            }
            .faq-section .section-header h2 {
                font-size: 22px;
            }
            .cta-banner-section {
                padding: 40px 0;
            }
            .cta-banner {
                flex-direction: column;
                text-align: center;
                padding: 28px 20px;
            }
            .cta-banner .cta-text h3 {
                font-size: 18px;
            }
            .nav-links {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger-btn {
                display: flex;
            }
            .mobile-drawer {
                display: block;
            }
            .mobile-drawer-overlay {
                display: block;
            }
            .site-footer .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .site-footer .footer-brand {
                grid-column: span 2;
            }
            .top-info-bar .top-tip {
                display: none;
            }
        }

        @media (max-width: 575px) {
            .page-hero h1 {
                font-size: 22px;
            }
            .page-hero .hero-subtitle {
                font-size: 13px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .site-footer .footer-top {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .site-footer .footer-brand {
                grid-column: span 1;
            }
            .timeline-item .step-meta {
                flex-direction: column;
                gap: 8px;
            }
            .summary-card .summary-body {
                padding: 14px;
            }
            .faq-item .faq-question {
                padding: 14px 16px;
            }
            .faq-item .faq-question .faq-q-text {
                font-size: 14px;
                gap: 8px;
            }
            .faq-item .faq-answer .faq-a-inner {
                padding: 0 16px 14px;
                font-size: 13px;
            }
        }