/* roulang page: index */
:root {
            --primary: #f59e0b;
            --primary-dark: #d97706;
            --primary-light: #fbbf24;
            --bg-dark: #0a0e17;
            --bg-dark2: #111827;
            --bg-card: #1a2035;
            --bg-card-hover: #232b45;
            --text-main: #f1f5f9;
            --text-muted: #94a3b8;
            --text-dim: #64748b;
            --border-color: #2a3350;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(245, 158, 11, 0.15);
            --radius: 14px;
            --radius-sm: 8px;
            --radius-xl: 20px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            transition: var(--transition);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .container-wide {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 20px;
        }
        /* header / nav */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 14, 23, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(42, 51, 80, 0.5);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(10, 14, 23, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.6);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }
        .logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            background: linear-gradient(135deg, #f59e0b, #fbbf24, #f59e0b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo-text span {
            font-weight: 300;
            -webkit-text-fill-color: var(--text-muted);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            flex-shrink: 0;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text-main);
            background: rgba(245, 158, 11, 0.1);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav-search {
            flex: 1;
            max-width: 420px;
            margin: 0 8px;
            position: relative;
        }
        .nav-search .search-icon {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-dim);
            font-size: 0.9rem;
            pointer-events: none;
        }
        .nav-search input {
            width: 100%;
            padding: 10px 16px 10px 40px;
            border-radius: 40px;
            border: 1px solid var(--border-color);
            background: rgba(26, 32, 53, 0.8);
            color: var(--text-main);
            font-size: 0.9rem;
            outline: none;
            transition: var(--transition);
        }
        .nav-search input::placeholder {
            color: var(--text-dim);
        }
        .nav-search input:focus {
            border-color: var(--primary);
            background: rgba(26, 32, 53, 1);
            box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
        }
        .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #0a0e17 !important;
            font-weight: 700 !important;
            padding: 10px 24px !important;
            border-radius: 40px !important;
            box-shadow: 0 4px 20px rgba(245, 158, 11, 0.3);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(245, 158, 11, 0.45);
            background: linear-gradient(135deg, var(--primary-light), var(--primary)) !important;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-main);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            flex-shrink: 0;
        }
        /* hero */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 20px 80px;
            overflow: hidden;
            background: var(--bg-dark);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.35;
            transform: scale(1.05);
            animation: heroZoom 20s ease-in-out infinite alternate;
        }
        @keyframes heroZoom {
            0% {
                transform: scale(1.05);
            }
            100% {
                transform: scale(1.15);
            }
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(10, 14, 23, 0.3) 0%, rgba(10, 14, 23, 0.85) 70%, var(--bg-dark) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 880px;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 40px;
            border: 1px solid rgba(245, 158, 11, 0.3);
            background: rgba(245, 158, 11, 0.08);
            color: var(--primary-light);
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 1px;
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }
        .hero h1 {
            font-size: clamp(2.6rem, 7vw, 4.6rem);
            font-weight: 900;
            line-height: 1.12;
            margin-bottom: 20px;
            background: linear-gradient(180deg, #ffffff 30%, #c0c8d8 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
        }
        .hero h1 .highlight {
            background: linear-gradient(135deg, #f59e0b, #fbbf24);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: clamp(1.05rem, 2.2vw, 1.35rem);
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            border-radius: 50px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #0a0e17;
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            cursor: pointer;
            box-shadow: 0 6px 30px rgba(245, 158, 11, 0.35);
            transition: var(--transition);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(245, 158, 11, 0.5);
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            border-radius: 50px;
            border: 1px solid var(--border-color);
            background: rgba(26, 32, 53, 0.6);
            color: var(--text-main);
            font-weight: 600;
            font-size: 1.05rem;
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            background: rgba(245, 158, 11, 0.08);
            color: var(--primary-light);
            transform: translateY(-3px);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
            margin-top: 60px;
            padding-top: 40px;
            border-top: 1px solid rgba(42, 51, 80, 0.4);
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat .num {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, #f59e0b, #fbbf24);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: block;
        }
        .hero-stat .label {
            font-size: 0.85rem;
            color: var(--text-dim);
            margin-top: 4px;
            letter-spacing: 0.5px;
        }
        /* sections */
        section {
            padding: 80px 0;
        }
        .section-label {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 40px;
            background: rgba(245, 158, 11, 0.08);
            color: var(--primary-light);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 12px;
            border: 1px solid rgba(245, 158, 11, 0.15);
        }
        .section-title {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            color: #fff;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 640px;
            line-height: 1.8;
        }
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-header .section-sub {
            margin: 0 auto;
        }
        /* feature cards */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 28px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light), transparent);
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-card:hover {
            border-color: rgba(245, 158, 11, 0.25);
            transform: translateY(-6px);
            box-shadow: var(--shadow-card), var(--shadow-glow);
        }
        .feature-card .icon {
            width: 54px;
            height: 54px;
            border-radius: 14px;
            background: rgba(245, 158, 11, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 20px;
            border: 1px solid rgba(245, 158, 11, 0.15);
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: #fff;
        }
        .feature-card p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        /* event cards */
        .event-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .event-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .event-card:hover {
            transform: translateY(-6px);
            border-color: rgba(245, 158, 11, 0.2);
            box-shadow: var(--shadow-card), var(--shadow-glow);
        }
        .event-card .thumb {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .event-card .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .event-card:hover .thumb img {
            transform: scale(1.08);
        }
        .event-card .thumb .tag {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 14px;
            border-radius: 20px;
            background: rgba(245, 158, 11, 0.9);
            color: #0a0e17;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            backdrop-filter: blur(4px);
        }
        .event-card .body {
            padding: 22px 24px 24px;
        }
        .event-card .body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }
        .event-card .body p {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .event-card .meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-dim);
        }
        .event-card .meta i {
            margin-right: 4px;
            color: var(--primary);
        }
        /* cms list */
        .cms-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
        }
        .cms-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .cms-item:hover {
            border-color: rgba(245, 158, 11, 0.2);
            background: var(--bg-card-hover);
            transform: translateY(-3px);
            box-shadow: var(--shadow-card);
        }
        .cms-item .cms-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 6px;
            display: block;
        }
        .cms-item .cms-title:hover {
            color: var(--primary-light);
        }
        .cms-item .cms-excerpt {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 10px;
        }
        .cms-item .cms-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.78rem;
            color: var(--text-dim);
        }
        .cms-item .cms-meta .cms-cat {
            padding: 2px 12px;
            border-radius: 20px;
            background: rgba(245, 158, 11, 0.08);
            color: var(--primary-light);
            border: 1px solid rgba(245, 158, 11, 0.12);
        }
        .cms-empty {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-dim);
            font-size: 1rem;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px dashed var(--border-color);
        }
        /* advantage stats */
        .adv-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 28px;
            text-align: center;
        }
        .adv-item {
            padding: 32px 20px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .adv-item:hover {
            border-color: rgba(245, 158, 11, 0.2);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }
        .adv-item .adv-num {
            font-size: 2.8rem;
            font-weight: 900;
            background: linear-gradient(135deg, #f59e0b, #fbbf24);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            display: block;
            line-height: 1.2;
        }
        .adv-item .adv-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-top: 8px;
        }
        /* category cards */
        .cat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }
        .cat-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px 24px;
            border: 1px solid var(--border-color);
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .cat-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light));
            opacity: 0;
            transition: var(--transition);
        }
        .cat-card:hover::after {
            opacity: 1;
        }
        .cat-card:hover {
            border-color: rgba(245, 158, 11, 0.2);
            transform: translateY(-5px);
            box-shadow: var(--shadow-card), var(--shadow-glow);
        }
        .cat-card .cat-icon {
            font-size: 2.4rem;
            color: var(--primary);
            margin-bottom: 16px;
            display: block;
        }
        .cat-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .cat-card p {
            font-size: 0.85rem;
            color: var(--text-dim);
        }
        .cat-card .cat-arrow {
            display: inline-block;
            margin-top: 14px;
            color: var(--primary);
            font-size: 1.2rem;
            opacity: 0.6;
            transition: var(--transition);
        }
        .cat-card:hover .cat-arrow {
            opacity: 1;
            transform: translateX(6px);
        }
        /* faq */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(245, 158, 11, 0.15);
        }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            color: #fff;
            font-size: 1rem;
            gap: 16px;
            transition: var(--transition);
        }
        .faq-question:hover {
            background: rgba(245, 158, 11, 0.03);
        }
        .faq-question .faq-toggle {
            color: var(--primary);
            font-size: 1.2rem;
            flex-shrink: 0;
            transition: var(--transition);
        }
        .faq-item.open .faq-toggle {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        /* cta */
        .cta-section {
            background: linear-gradient(135deg, rgba(245, 158, 11, 0.05), rgba(217, 119, 6, 0.02));
            border-top: 1px solid rgba(245, 158, 11, 0.1);
            border-bottom: 1px solid rgba(245, 158, 11, 0.1);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.06;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 60px 20px;
        }
        .cta-inner h2 {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 800;
            margin-bottom: 16px;
            color: #fff;
        }
        .cta-inner p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        /* footer */
        .site-footer {
            background: var(--bg-dark2);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo-text {
            font-size: 1.5rem;
            display: inline-block;
            margin-bottom: 12px;
        }
        .footer-brand p {
            color: var(--text-dim);
            font-size: 0.9rem;
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul a {
            color: var(--text-dim);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .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: 0.82rem;
            color: var(--text-dim);
        }
        .footer-bottom a {
            color: var(--text-dim);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }
        /* back to top */
        .back-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #0a0e17;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            box-shadow: 0 4px 20px rgba(245, 158, 11, 0.3);
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }
        .back-top.visible {
            opacity: 1;
            visibility: visible;
        }
        .back-top:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(245, 158, 11, 0.5);
        }
        /* mobile */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .nav-search {
                max-width: 280px;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(10, 14, 23, 0.98);
                backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 16px 20px;
                border-bottom: 1px solid var(--border-color);
                gap: 4px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a.active {
                background: rgba(245, 158, 11, 0.12);
                color: var(--primary-light);
            }
            .nav-toggle {
                display: block;
            }
            .nav-search {
                max-width: 180px;
                margin: 0 4px;
            }
            .nav-search input {
                padding: 8px 12px 8px 34px;
                font-size: 0.82rem;
            }
            .nav-inner {
                height: 64px;
            }
            .logo-text {
                font-size: 1.1rem;
            }
            .hero {
                min-height: 90vh;
                padding: 100px 16px 60px;
            }
            .hero-stats {
                gap: 24px;
                margin-top: 40px;
                padding-top: 28px;
            }
            .hero-stat .num {
                font-size: 1.7rem;
            }
            section {
                padding: 50px 0;
            }
            .feature-grid,
            .event-grid,
            .cms-list {
                grid-template-columns: 1fr;
            }
            .adv-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .cat-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .back-top {
                bottom: 20px;
                right: 20px;
                width: 42px;
                height: 42px;
                font-size: 1.1rem;
            }
            .cta-inner {
                padding: 40px 16px;
            }
            .faq-question {
                padding: 14px 18px;
                font-size: 0.92rem;
            }
            .faq-answer {
                padding: 0 18px 14px;
            }
        }
        @media (max-width: 520px) {
            .nav-search {
                max-width: 120px;
            }
            .nav-search input {
                padding: 6px 10px 6px 30px;
                font-size: 0.75rem;
            }
            .nav-cta {
                padding: 8px 16px !important;
                font-size: 0.78rem !important;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 0.95rem;
            }
            .btn-primary,
            .btn-secondary {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .adv-grid {
                grid-template-columns: 1fr;
            }
            .cat-grid {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.5rem;
            }
        }
        /* focus accessibility */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }
        /* scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 8px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-dim);
        }
        /* loading shimmer for images */
        .img-shimmer {
            background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card-hover) 50%, var(--bg-card) 75%);
            background-size: 200% 100%;
            animation: shimmer 1.8s ease-in-out infinite;
        }
        @keyframes shimmer {
            0% {
                background-position: -200% 0;
            }
            100% {
                background-position: 200% 0;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #2a4a7f;
            --accent: #f4a261;
            --accent-light: #f8c78a;
            --dark: #0b1a2e;
            --dark-card: #122238;
            --darker: #081420;
            --text: #e8edf3;
            --text-muted: #8899b4;
            --text-light: #b8c8e0;
            --border: #1e3a5f;
            --border-light: #2a4a7f;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.3);
            --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.5);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            background-color: var(--darker);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

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

        .container-wide {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--darker);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-light);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(8, 20, 32, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            transition: background var(--transition), box-shadow var(--transition);
        }

        .site-header.scrolled {
            background: rgba(8, 20, 32, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

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

        .logo-text {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo-text i {
            -webkit-text-fill-color: initial;
            color: var(--primary);
            margin-right: 6px;
        }

        .nav-search {
            flex: 1;
            max-width: 420px;
            position: relative;
            display: none;
        }

        .nav-search .search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 15px;
            pointer-events: none;
        }

        .nav-search input {
            width: 100%;
            padding: 10px 18px 10px 46px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border);
            border-radius: 50px;
            color: var(--text);
            font-size: 14px;
            transition: border-color var(--transition), background var(--transition);
        }

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

        .nav-search input:focus {
            border-color: var(--primary);
            background: rgba(255, 255, 255, 0.1);
            outline: none;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-links li a {
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-light);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-links li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-links li a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.35);
        }

        .nav-links li a.nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 8px 22px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 20px rgba(230, 57, 70, 0.3);
        }

        .nav-links li a.nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 28px rgba(230, 57, 70, 0.4);
        }

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

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        /* ===== Hero ===== */
        .category-hero {
            padding: 140px 0 80px;
            position: relative;
            background: var(--darker);
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }

        .category-hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }

        .category-hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 20, 32, 0.92) 0%, rgba(8, 20, 32, 0.6) 50%, rgba(8, 20, 32, 0.9) 100%);
        }

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

        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(230, 57, 70, 0.18);
            border: 1px solid rgba(230, 57, 70, 0.3);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary-light);
            margin-bottom: 20px;
        }

        .category-hero h1 {
            font-size: clamp(36px, 6vw, 64px);
            font-weight: 900;
            line-height: 1.15;
            color: #fff;
            max-width: 720px;
            letter-spacing: -1px;
        }

        .category-hero h1 .highlight {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .category-hero p {
            font-size: 18px;
            color: var(--text-light);
            max-width: 600px;
            margin-top: 20px;
            line-height: 1.8;
        }

        .category-hero .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 32px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            border-radius: 50px;
            transition: all var(--transition);
            box-shadow: 0 6px 24px rgba(230, 57, 70, 0.3);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 40px rgba(230, 57, 70, 0.4);
        }

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

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-light);
            font-weight: 600;
            font-size: 16px;
            border-radius: 50px;
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border-color: var(--border-light);
            transform: translateY(-2px);
        }

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

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

        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-header h2 {
            font-size: clamp(28px, 4vw, 42px);
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            line-height: 1.2;
        }

        .section-header h2 .highlight {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .section-header p {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 640px;
            margin: 16px auto 0;
            line-height: 1.8;
        }

        .section-header .header-line {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 20px auto 0;
        }

        /* ===== Cards Grid ===== */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
            gap: 24px;
        }

        .card {
            background: var(--dark-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: opacity var(--transition);
        }

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

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

        .card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: #fff;
            margin-bottom: 18px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        }

        .card .card-icon.gold {
            background: linear-gradient(135deg, var(--accent), #e07c1f);
        }

        .card .card-icon.blue {
            background: linear-gradient(135deg, var(--secondary-light), #1a3a5c);
        }

        .card .card-icon.green {
            background: linear-gradient(135deg, #2a9d8f, #1b7a6e);
        }

        .card h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

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

        .card .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }

        .card .card-tags span {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border);
            border-radius: 50px;
            font-size: 12px;
            color: var(--text-light);
        }

        /* ===== Features / 卖点 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 24px;
        }

        .feature-item {
            text-align: center;
            padding: 32px 20px;
            background: var(--dark-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            transition: all var(--transition);
        }

        .feature-item:hover {
            border-color: var(--border-light);
            transform: translateY(-3px);
            box-shadow: var(--shadow-sm);
        }

        .feature-item .num {
            font-size: 42px;
            font-weight: 900;
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1;
        }

        .feature-item h4 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin: 12px 0 8px;
        }

        .feature-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== Scene / 场景 ===== */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 24px;
        }

        .scene-card {
            background: var(--dark-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition);
        }

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

        .scene-card .scene-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            border-bottom: 1px solid var(--border);
        }

        .scene-card .scene-body {
            padding: 24px 22px;
        }

        .scene-card .scene-body h3 {
            font-size: 19px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

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

        .scene-card .scene-body .scene-tag {
            display: inline-block;
            margin-top: 12px;
            padding: 5px 14px;
            background: rgba(230, 57, 70, 0.12);
            border-radius: 50px;
            font-size: 12px;
            font-weight: 500;
            color: var(--primary-light);
        }

        /* ===== Steps / 流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 32px;
            counter-reset: step;
        }

        .step-item {
            text-align: center;
            padding: 32px 20px;
            background: var(--dark-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            position: relative;
            transition: all var(--transition);
        }

        .step-item:hover {
            border-color: var(--border-light);
            transform: translateY(-3px);
            box-shadow: var(--shadow-sm);
        }

        .step-item .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin: 0 auto 16px;
        }

        .step-item h4 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

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

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

        .faq-item {
            background: var(--dark-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: border-color var(--transition);
        }

        .faq-item:hover {
            border-color: var(--border-light);
        }

        .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            transition: color var(--transition);
            gap: 16px;
        }

        .faq-item .faq-question:hover {
            color: #fff;
        }

        .faq-item .faq-question i {
            font-size: 14px;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

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

        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--dark-card);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.06;
            z-index: 0;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .cta-section h2 {
            font-size: clamp(28px, 4vw, 42px);
            font-weight: 800;
            color: #fff;
            max-width: 640px;
            margin: 0 auto 16px;
            line-height: 1.2;
        }

        .cta-section p {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        .cta-section .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--darker);
            border-top: 1px solid var(--border);
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--border);
        }

        .footer-brand .logo-text {
            font-size: 20px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 14px;
            line-height: 1.8;
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }

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

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

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

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0 32px;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-light);
            transition: color var(--transition);
        }

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

        /* ===== Responsive ===== */
        @media (min-width: 1025px) {
            .nav-search {
                display: block;
            }
        }

        @media (max-width: 1024px) {
            .nav-links li a {
                padding: 6px 14px;
                font-size: 13px;
            }

            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
                gap: 32px;
            }

            .category-hero h1 {
                font-size: 40px;
            }
        }

        @media (max-width: 768px) {
            .nav-search {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                max-width: 100%;
                padding: 12px 24px;
                background: var(--darker);
                border-bottom: 1px solid var(--border);
            }

            .nav-search.show {
                display: block;
            }

            .nav-search input {
                width: 100%;
            }

            .nav-links {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                flex-direction: column;
                background: var(--darker);
                border-bottom: 1px solid var(--border);
                padding: 16px 24px 24px;
                gap: 6px;
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s ease;
                pointer-events: none;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
            }

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

            .nav-links li a {
                display: block;
                padding: 12px 16px;
                font-size: 15px;
                border-radius: 10px;
            }

            .nav-links li a.nav-cta {
                justify-content: center;
                margin-top: 8px;
            }

            .nav-toggle {
                display: block;
                order: 3;
            }

            .nav-inner {
                height: 64px;
            }

            .category-hero {
                padding: 110px 0 60px;
                min-height: 420px;
            }

            .category-hero h1 {
                font-size: 32px;
            }

            .category-hero p {
                font-size: 16px;
            }

            .section {
                padding: 56px 0;
            }

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

            .cards-grid {
                grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            }

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

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

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

            .footer-brand {
                grid-column: 1 / -1;
            }

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

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

            .category-hero h1 {
                font-size: 28px;
            }

            .category-hero .hero-actions {
                flex-direction: column;
            }

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

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

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

            .feature-item {
                padding: 20px 14px;
            }

            .feature-item .num {
                font-size: 32px;
            }

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

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

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

            .faq-item .faq-question {
                padding: 14px 18px;
                font-size: 14px;
            }

            .faq-item .faq-answer {
                padding: 0 18px;
                font-size: 13px;
            }

            .faq-item.active .faq-answer {
                padding: 0 18px 16px;
            }

            .cta-section {
                padding: 56px 0;
            }
        }

/* roulang page: article */
:root {
            --primary: #d4a853;
            --primary-dark: #b8923f;
            --primary-light: #e8c66a;
            --bg-dark: #0a0a14;
            --bg-card: #13132a;
            --bg-card-hover: #1a1a3e;
            --text-white: #ffffff;
            --text-light: #c8c8d8;
            --text-muted: #8888a0;
            --border-color: #2a2a4a;
            --shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 8px 50px rgba(0, 0, 0, 0.5);
            --radius: 12px;
            --radius-sm: 8px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', 'Noto Sans SC', system-ui, sans-serif;
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        ::selection {
            background: rgba(212, 168, 83, 0.35);
            color: #fff;
        }

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

        .container-wide {
            max-width: 1440px;
            margin: 0 auto;
            padding: 0 32px;
        }

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

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

        button,
        input,
        textarea {
            font-family: inherit;
            outline: none;
        }

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

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }

        /* ===== Site Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(10, 10, 20, 0.88);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-bottom: 1px solid rgba(42, 42, 74, 0.5);
            padding: 14px 0;
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(10, 10, 20, 0.96);
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.4);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: nowrap;
        }

        .logo-text {
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
            background: linear-gradient(135deg, #d4a853, #f0d080);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo-text:hover {
            opacity: 0.9;
        }

        .nav-search {
            flex: 1;
            max-width: 480px;
            position: relative;
            margin: 0 16px;
        }
        .nav-search .search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 0.95rem;
            pointer-events: none;
        }
        .nav-search input {
            width: 100%;
            padding: 10px 20px 10px 46px;
            border-radius: 50px;
            border: 1px solid rgba(42, 42, 74, 0.7);
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
            font-size: 0.95rem;
            transition: var(--transition);
            backdrop-filter: blur(4px);
        }
        .nav-search input::placeholder {
            color: var(--text-muted);
            font-weight: 300;
        }
        .nav-search input:focus {
            border-color: var(--primary);
            background: rgba(255, 255, 255, 0.1);
            box-shadow: 0 0 0 3px rgba(212, 168, 83, 0.15);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            flex-shrink: 0;
        }
        .nav-links li a {
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-links li a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-links li a.active {
            color: #fff;
            background: rgba(212, 168, 83, 0.15);
            box-shadow: inset 0 0 0 1px rgba(212, 168, 83, 0.25);
        }
        .nav-links li a.nav-cta {
            background: linear-gradient(135deg, #d4a853, #c99a3e);
            color: #0a0a14;
            font-weight: 600;
            padding: 8px 22px;
            box-shadow: 0 4px 16px rgba(212, 168, 83, 0.25);
        }
        .nav-links li a.nav-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 24px rgba(212, 168, 83, 0.35);
            background: linear-gradient(135deg, #e0bc6a, #d4a853);
        }
        .nav-links li a.nav-cta i {
            margin-right: 6px;
        }

        .nav-toggle {
            display: none;
            font-size: 1.4rem;
            color: #fff;
            padding: 6px 12px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        /* ===== Hero / Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 140px 0 80px;
            min-height: 420px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: var(--bg-dark);
        }
        .page-banner .banner-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center center;
            opacity: 0.5;
            transform: scale(1.02);
            filter: blur(2px) brightness(0.5);
            z-index: 0;
        }
        .page-banner .banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 10, 20, 0.85) 30%, rgba(10, 10, 20, 0.4) 70%, rgba(10, 10, 20, 0.7) 100%);
            z-index: 1;
        }
        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }
        .page-banner .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .page-banner .breadcrumb a {
            color: var(--text-muted);
        }
        .page-banner .breadcrumb a:hover {
            color: var(--primary);
        }
        .page-banner .breadcrumb .sep {
            color: var(--text-muted);
            opacity: 0.5;
        }
        .page-banner .breadcrumb .current {
            color: var(--primary-light);
        }
        .page-banner h1 {
            font-size: clamp(1.8rem, 5vw, 3rem);
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 30px rgba(0, 0, 0, 0.3);
        }
        .page-banner .meta-info {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 20px;
            font-size: 0.9rem;
            color: var(--text-light);
        }
        .page-banner .meta-info span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .page-banner .meta-info i {
            color: var(--primary);
            font-size: 0.85rem;
        }
        .page-banner .badge-category {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 50px;
            background: rgba(212, 168, 83, 0.18);
            color: var(--primary-light);
            font-size: 0.8rem;
            font-weight: 500;
            border: 1px solid rgba(212, 168, 83, 0.25);
            margin-bottom: 16px;
        }

        /* ===== Article Content ===== */
        .article-section {
            padding: 60px 0 80px;
        }
        .article-body {
            max-width: 800px;
            margin: 0 auto;
            background: rgba(19, 19, 42, 0.5);
            border-radius: var(--radius);
            border: 1px solid rgba(42, 42, 74, 0.4);
            padding: 48px 56px;
            backdrop-filter: blur(8px);
        }
        .article-body .cms-content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-light);
        }
        .article-body .cms-content p {
            margin-bottom: 1.4em;
        }
        .article-body .cms-content h2,
        .article-body .cms-content h3 {
            color: #fff;
            margin-top: 1.6em;
            margin-bottom: 0.6em;
            font-weight: 700;
        }
        .article-body .cms-content h2 {
            font-size: 1.5rem;
            border-bottom: 1px solid rgba(42, 42, 74, 0.4);
            padding-bottom: 0.4em;
        }
        .article-body .cms-content h3 {
            font-size: 1.2rem;
        }
        .article-body .cms-content ul,
        .article-body .cms-content ol {
            margin-bottom: 1.4em;
            padding-left: 1.6em;
        }
        .article-body .cms-content li {
            margin-bottom: 0.4em;
        }
        .article-body .cms-content a {
            color: var(--primary-light);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body .cms-content a:hover {
            color: #fff;
        }
        .article-body .cms-content blockquote {
            border-left: 4px solid var(--primary);
            padding: 12px 24px;
            margin: 1.4em 0;
            background: rgba(212, 168, 83, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-body .cms-content img {
            border-radius: var(--radius-sm);
            margin: 1.6em auto;
            box-shadow: var(--shadow);
        }
        .article-body .cms-content code {
            background: rgba(255, 255, 255, 0.06);
            padding: 2px 10px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--primary-light);
        }
        .article-body .cms-content pre {
            background: rgba(0, 0, 0, 0.4);
            padding: 20px 24px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            border: 1px solid rgba(42, 42, 74, 0.3);
            margin: 1.4em 0;
        }
        .article-body .cms-content pre code {
            background: none;
            padding: 0;
            color: var(--text-light);
        }

        .article-body .not-found {
            text-align: center;
            padding: 60px 20px;
        }
        .article-body .not-found i {
            font-size: 3rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            display: block;
        }
        .article-body .not-found h3 {
            color: #fff;
            font-size: 1.5rem;
            margin-bottom: 12px;
        }
        .article-body .not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .article-body .not-found .btn-back {
            display: inline-block;
            padding: 12px 32px;
            border-radius: 50px;
            background: var(--primary);
            color: #0a0a14;
            font-weight: 600;
            transition: var(--transition);
        }
        .article-body .not-found .btn-back:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(212, 168, 83, 0.3);
        }

        /* ===== Related Cards ===== */
        .related-section {
            padding: 60px 0;
            background: rgba(10, 10, 20, 0.6);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .section-sub {
            color: var(--text-muted);
            font-size: 1.05rem;
            margin-bottom: 40px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid rgba(42, 42, 74, 0.4);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-6px);
            border-color: rgba(212, 168, 83, 0.25);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
            background: var(--bg-card-hover);
        }
        .related-card .card-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .related-card .card-img .tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 14px;
            border-radius: 50px;
            background: rgba(212, 168, 83, 0.9);
            color: #0a0a14;
            font-size: 0.75rem;
            font-weight: 700;
            backdrop-filter: blur(4px);
        }
        .related-card .card-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .card-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.35;
        }
        .related-card .card-body p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
            flex: 1;
        }
        .related-card .card-body .card-link {
            margin-top: 16px;
            color: var(--primary);
            font-weight: 500;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .related-card .card-body .card-link:hover {
            color: var(--primary-light);
            gap: 10px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 70px 0;
            background: var(--bg-dark);
        }
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: rgba(19, 19, 42, 0.5);
            border: 1px solid rgba(42, 42, 74, 0.3);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(212, 168, 83, 0.15);
        }
        .faq-question {
            width: 100%;
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--text-light);
            background: transparent;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: #fff;
        }
        .faq-question i {
            transition: transform 0.3s ease;
            color: var(--primary);
            font-size: 0.9rem;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section .cta-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.2;
            transform: scale(1.05);
            filter: brightness(0.4);
            z-index: 0;
        }
        .cta-section .cta-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 10, 20, 0.85) 0%, rgba(10, 10, 20, 0.5) 100%);
            z-index: 1;
        }
        .cta-section .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-section .cta-inner h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-section .cta-inner p {
            color: var(--text-light);
            font-size: 1.1rem;
            margin-bottom: 32px;
        }
        .cta-section .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: 50px;
            background: linear-gradient(135deg, #d4a853, #c99a3e);
            color: #0a0a14;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(212, 168, 83, 0.25);
        }
        .cta-btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(212, 168, 83, 0.35);
            background: linear-gradient(135deg, #e0bc6a, #d4a853);
            color: #0a0a14;
        }
        .cta-btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
            font-weight: 500;
            font-size: 1rem;
            border: 1px solid rgba(255, 255, 255, 0.12);
            transition: var(--transition);
        }
        .cta-btn-secondary:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border-color: rgba(212, 168, 83, 0.3);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: rgba(8, 8, 16, 0.95);
            border-top: 1px solid rgba(42, 42, 74, 0.4);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo-text {
            font-size: 1.4rem;
            margin-bottom: 16px;
            display: inline-block;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-top: 12px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(42, 42, 74, 0.3);
            padding: 24px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== Scroll to Top ===== */
        .scroll-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 90;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #0a0a14;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 20px rgba(212, 168, 83, 0.3);
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
            transition: var(--transition);
        }
        .scroll-top.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .scroll-top:hover {
            background: var(--primary-light);
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(212, 168, 83, 0.4);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .article-body {
                padding: 32px 28px;
            }
        }

        @media (max-width: 920px) {
            .nav-search {
                display: none;
            }
            .nav-links li a {
                padding: 6px 14px;
                font-size: 0.85rem;
            }
        }

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

            .site-header {
                padding: 12px 0;
            }
            .nav-search {
                display: none;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(10, 10, 20, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 6px;
                border-bottom: 1px solid rgba(42, 42, 74, 0.4);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                width: 100%;
                padding: 12px 16px;
                border-radius: 8px;
            }
            .nav-links li a.nav-cta {
                text-align: center;
                margin-top: 8px;
            }
            .nav-toggle {
                display: block;
            }

            .page-banner {
                padding: 110px 0 60px;
                min-height: 320px;
            }
            .page-banner h1 {
                font-size: 1.6rem;
            }

            .article-body {
                padding: 24px 18px;
                border-radius: var(--radius-sm);
            }
            .article-body .cms-content {
                font-size: 0.98rem;
            }

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

            .faq-question {
                font-size: 0.95rem;
                padding: 14px 18px;
            }
            .faq-answer {
                font-size: 0.9rem;
            }

            .cta-section .cta-inner h2 {
                font-size: 1.6rem;
            }
            .cta-section .cta-inner p {
                font-size: 0.95rem;
            }
            .cta-btn-primary,
            .cta-btn-secondary {
                width: 100%;
                justify-content: center;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-title {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .logo-text {
                font-size: 1.15rem;
            }
            .page-banner {
                padding: 100px 0 48px;
                min-height: 260px;
            }
            .page-banner h1 {
                font-size: 1.35rem;
            }
            .page-banner .meta-info {
                font-size: 0.8rem;
                gap: 12px;
            }
            .article-body {
                padding: 16px 12px;
            }
            .related-card .card-img {
                height: 140px;
            }
            .cta-section {
                padding: 50px 0;
            }
            .cta-section .cta-inner h2 {
                font-size: 1.3rem;
            }
            .scroll-top {
                bottom: 16px;
                right: 16px;
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
        }