/* roulang page: index */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #dbeafe;
            --accent: #06b6d4;
            --accent-light: #cffafe;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --text-main: #0f172a;
            --text-muted: #475569;
            --text-weak: #94a3b8;
            --border-light: #e2e8f0;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --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;
            -webkit-font-smoothing: antialiased;
        }

        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background-color: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
        }

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

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

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

        .container-narrow {
            max-width: 880px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* header / nav */
        .site-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .nav-logo i {
            color: var(--primary);
            font-size: 1.5rem;
        }
        .nav-logo:hover {
            color: var(--primary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: var(--radius-xs);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-links a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }

        .nav-cta {
            padding: 10px 28px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff !important;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
            transition: var(--transition);
            white-space: nowrap;
            border: none;
            cursor: pointer;
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(37, 99, 235, 0.35);
            background: linear-gradient(135deg, #1d4ed8, #1e40af);
        }
        .nav-cta:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
            border-radius: var(--radius-xs);
        }
        .nav-toggle span {
            width: 26px;
            height: 2.5px;
            background: var(--text-main);
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px;
                gap: 6px;
                border-bottom: 1px solid var(--border-light);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
                border-radius: 0 0 var(--radius) var(--radius);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-links a {
                padding: 12px 20px;
                width: 100%;
                font-size: 1.05rem;
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a.active {
                border-left: 4px solid var(--primary);
            }
            .nav-cta-mobile {
                margin-top: 12px;
                width: 100%;
                text-align: center;
                padding: 14px 28px;
                background: linear-gradient(135deg, var(--primary), var(--primary-dark));
                color: #fff !important;
                border-radius: 50px;
                font-weight: 600;
                font-size: 1rem;
                box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
                transition: var(--transition);
                border: none;
                cursor: pointer;
            }
            .nav-cta-mobile:hover {
                transform: translateY(-2px);
                box-shadow: 0 8px 28px rgba(37, 99, 235, 0.35);
            }
            .nav-cta-desktop {
                display: none !important;
            }
        }

        @media (min-width: 769px) {
            .nav-cta-mobile {
                display: none !important;
            }
            .nav-cta-desktop {
                display: inline-flex !important;
            }
        }

        /* hero */
        .hero {
            position: relative;
            min-height: 88vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #0c1a3a 0%, #1a2d5e 50%, #0f1f3f 100%);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.28;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(37, 99, 235, 0.25) 0%, transparent 70%),
                radial-gradient(ellipse at 70% 20%, rgba(6, 182, 212, 0.15) 0%, transparent 50%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 60px 20px;
            max-width: 840px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 20px;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 50px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 28px;
            letter-spacing: 0.3px;
        }
        .hero-badge i {
            color: #38bdf8;
        }
        .hero h1 {
            font-size: clamp(2.4rem, 7vw, 4.2rem);
            font-weight: 800;
            line-height: 1.15;
            color: #ffffff;
            letter-spacing: -0.03em;
            margin-bottom: 20px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .hero h1 span {
            background: linear-gradient(135deg, #60a5fa, #38bdf8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: clamp(1.05rem, 2vw, 1.3rem);
            color: rgba(255, 255, 255, 0.8);
            max-width: 660px;
            margin: 0 auto 36px;
            line-height: 1.7;
            font-weight: 400;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .hero-actions .btn-primary {
            padding: 16px 40px;
            background: linear-gradient(135deg, #2563eb, #1d4ed8);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            box-shadow: 0 8px 30px rgba(37, 99, 235, 0.35);
            transition: var(--transition);
            border: none;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-actions .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(37, 99, 235, 0.45);
            background: linear-gradient(135deg, #1d4ed8, #1e40af);
        }
        .hero-actions .btn-primary:focus-visible {
            outline: 3px solid #60a5fa;
            outline-offset: 3px;
        }
        .hero-actions .btn-outline {
            padding: 15px 36px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.35);
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            backdrop-filter: blur(4px);
        }
        .hero-actions .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-3px);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 32px 56px;
            justify-content: center;
            margin-top: 50px;
            padding-top: 36px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero-stats .stat-item {
            text-align: center;
            color: #fff;
        }
        .hero-stats .stat-number {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, #60a5fa, #38bdf8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-stats .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 2px;
        }

        @media (max-width: 640px) {
            .hero {
                min-height: 75vh;
            }
            .hero-stats {
                gap: 20px 32px;
            }
            .hero-stats .stat-number {
                font-size: 1.6rem;
            }
        }

        /* section spacing */
        .section-padding {
            padding: 80px 0;
        }
        .section-padding-sm {
            padding: 56px 0;
        }
        .section-title {
            font-size: clamp(1.7rem, 4vw, 2.4rem);
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-main);
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto 40px;
            line-height: 1.7;
        }
        .text-center {
            text-align: center;
        }

        /* features */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 36px 28px 32px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.6rem;
            color: #fff;
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-main);
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* news / cms list */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .news-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }
        .news-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            border-bottom: 1px solid var(--border-light);
        }
        .news-card .card-body {
            padding: 22px 24px 26px;
        }
        .news-card .card-tag {
            display: inline-block;
            padding: 3px 14px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .news-card .card-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .card-title a {
            color: var(--text-main);
        }
        .news-card .card-title a:hover {
            color: var(--primary);
        }
        .news-card .card-excerpt {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .news-card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-weak);
        }
        .news-card .card-meta i {
            margin-right: 4px;
        }
        .empty-news {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 20px;
            color: var(--text-muted);
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px dashed var(--border-light);
        }

        /* stats / numbers */
        .stats-section {
            background: linear-gradient(135deg, #0c1a3a 0%, #1a2d5e 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .stats-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            z-index: 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 32px;
            position: relative;
            z-index: 1;
        }
        .stats-grid .stat-card {
            text-align: center;
            padding: 24px 16px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }
        .stats-grid .stat-card:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
        }
        .stats-grid .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            background: linear-gradient(135deg, #60a5fa, #38bdf8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.02em;
        }
        .stats-grid .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        /* guide / intro */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 28px;
        }
        .guide-step {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
            text-align: center;
        }
        .guide-step:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }
        .guide-step .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            margin: 0 auto 16px;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
        }
        .guide-step h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .guide-step p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* faq */
        .faq-list {
            max-width: 780px;
            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-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            font-size: 1.02rem;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            text-align: left;
            transition: var(--transition);
            font-family: inherit;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--text-weak);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question.open i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.75;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }
        .faq-answer p {
            margin-bottom: 8px;
        }
        .faq-answer p:last-child {
            margin-bottom: 0;
        }

        /* cta */
        .cta-section {
            background: linear-gradient(135deg, #0c1a3a 0%, #1a2d5e 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.06;
            z-index: 0;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 60px 20px;
        }
        .cta-content h2 {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .cta-content p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .cta-content .btn-cta {
            padding: 18px 48px;
            background: linear-gradient(135deg, #2563eb, #1d4ed8);
            color: #fff;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 8px 30px rgba(37, 99, 235, 0.35);
            transition: var(--transition);
            border: none;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 12px;
        }
        .cta-content .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 44px rgba(37, 99, 235, 0.45);
            background: linear-gradient(135deg, #1d4ed8, #1e40af);
        }
        .cta-content .btn-cta:focus-visible {
            outline: 3px solid #60a5fa;
            outline-offset: 3px;
        }

        /* footer */
        .site-footer {
            background: #0b1424;
            color: rgba(255, 255, 255, 0.7);
            padding: 52px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand .footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .footer-brand .footer-logo i {
            color: #60a5fa;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h5 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul a:hover {
            color: #60a5fa;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a:hover {
            color: #60a5fa;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* cover image card */
        .cover-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .cover-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .cover-card img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            display: block;
        }
        .cover-card .cover-body {
            padding: 20px 22px 24px;
        }
        .cover-card .cover-body h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-main);
        }
        .cover-card .cover-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* category showcase */
        .cat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
        }

        /* utility */
        .badge-blue {
            display: inline-block;
            padding: 4px 16px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .gap-8 {
            gap: 8px;
        }
        .gap-12 {
            gap: 12px;
        }
        .mt-8 {
            margin-top: 8px;
        }
        .mt-12 {
            margin-top: 12px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mt-40 {
            margin-top: 40px;
        }
        .mb-8 {
            margin-bottom: 8px;
        }
        .mb-12 {
            margin-bottom: 12px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .mb-40 {
            margin-bottom: 40px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }

        /* focus-visible for all interactive */
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
        }

        /* smooth images */
        img[loading="lazy"] {
            opacity: 0;
            transition: opacity 0.4s ease;
        }
        img[loading="lazy"].loaded,
        img[loading="lazy"]:not([loading]) {
            opacity: 1;
        }

/* roulang page: article */
:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #dbeafe;
            --secondary: #f59e0b;
            --secondary-dark: #d97706;
            --accent: #10b981;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --text-dark: #0f172a;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 1rem;
            --radius-sm: 0.5rem;
            --radius-lg: 1.5rem;
            --shadow: 0 4px 24px rgba(0,0,0,0.06);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
            --shadow-hover: 0 20px 48px rgba(0,0,0,0.12);
            --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; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 1rem;
        }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

        /* ===== Navigation ===== */
        .site-header {
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled { box-shadow: 0 4px 20px rgba(0,0,0,0.05); }
        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.02em;
        }
        .nav-logo i { color: var(--primary); font-size: 1.5rem; }
        .nav-logo:hover { color: var(--primary); }
        .nav-links {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .nav-links li a {
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.925rem;
            color: var(--text-main);
            transition: all var(--transition);
            position: relative;
        }
        .nav-links li a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-links li a.active {
            background: var(--primary);
            color: #fff;
        }
        .nav-links li a.active:hover { background: var(--primary-dark); }
        .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff !important;
            padding: 0.55rem 1.4rem !important;
            border-radius: 2rem !important;
            font-weight: 600 !important;
            box-shadow: 0 4px 14px rgba(37,99,235,0.30);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: all var(--transition);
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37,99,235,0.40);
            background: linear-gradient(135deg, var(--primary-dark), #1e40af);
        }
        .nav-cta-mobile { display: none; }
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover { background: var(--border-light); }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--text-dark);
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
        .nav-toggle.open span:nth-child(2) { opacity: 0; }
        .nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

        /* ===== Hero ===== */
        .article-hero {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            overflow: hidden;
            padding: 4rem 1.5rem;
        }
        .article-hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.25;
            z-index: 0;
        }
        .article-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15,23,42,0.70) 0%, rgba(15,23,42,0.90) 100%);
            z-index: 1;
        }
        .article-hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
            margin: 0 auto;
        }
        .article-hero-content .meta-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: rgba(255,255,255,0.10);
            backdrop-filter: blur(8px);
            padding: 0.4rem 1.2rem;
            border-radius: 2rem;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.85);
            margin-bottom: 1.2rem;
            border: 1px solid rgba(255,255,255,0.08);
        }
        .article-hero-content .meta-badge i { color: var(--secondary); }
        .article-hero-content h1 {
            font-size: clamp(1.8rem, 4.5vw, 3rem);
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
        }
        .article-hero-content .hero-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 1.2rem;
            color: rgba(255,255,255,0.70);
            font-size: 0.9rem;
        }
        .article-hero-content .hero-meta i { margin-right: 0.35rem; color: var(--secondary); }

        /* ===== Article Body ===== */
        .article-section {
            padding: 3rem 0 4rem;
        }
        .article-wrapper {
            max-width: 820px;
            margin: 0 auto;
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 2.5rem 2.8rem;
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-main);
        }
        .article-body p { margin-bottom: 1.4rem; }
        .article-body h2, .article-body h3, .article-body h4 {
            font-weight: 700;
            color: var(--text-dark);
            margin-top: 2rem;
            margin-bottom: 0.8rem;
            line-height: 1.3;
        }
        .article-body h2 { font-size: 1.6rem; }
        .article-body h3 { font-size: 1.3rem; }
        .article-body ul, .article-body ol { margin-bottom: 1.4rem; padding-left: 1.8rem; }
        .article-body li { margin-bottom: 0.5rem; }
        .article-body a { text-decoration: underline; text-underline-offset: 2px; }
        .article-body img { border-radius: var(--radius-sm); margin: 1.5rem 0; box-shadow: var(--shadow); }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 1rem 1.5rem;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.5rem 0;
            color: var(--text-dark);
            font-style: italic;
        }
        .article-not-found {
            text-align: center;
            padding: 3rem 1rem;
        }
        .article-not-found i { font-size: 3rem; color: var(--text-light); margin-bottom: 1rem; }
        .article-not-found h2 { font-size: 1.5rem; color: var(--text-dark); margin-bottom: 0.5rem; }
        .article-not-found p { color: var(--text-muted); margin-bottom: 1.5rem; }
        .article-not-found a.btn-back { display: inline-block; padding: 0.6rem 1.8rem; background: var(--primary); color: #fff; border-radius: 2rem; font-weight: 600; transition: all var(--transition); }
        .article-not-found a.btn-back:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-lg); }

        /* ===== Tags & Share ===== */
        .article-footer-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border);
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .article-tags a {
            display: inline-block;
            padding: 0.25rem 0.9rem;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 2rem;
            font-size: 0.8rem;
            font-weight: 500;
            transition: all var(--transition);
        }
        .article-tags a:hover { background: var(--primary); color: #fff; }
        .article-share {
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .article-share span { font-size: 0.85rem; color: var(--text-muted); }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--border-light);
            color: var(--text-muted);
            transition: all var(--transition);
        }
        .article-share a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

        /* ===== Related ===== */
        .related-section {
            padding: 4rem 0;
            background: var(--bg-body);
        }
        .related-section .section-title {
            text-align: center;
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
        }
        .related-section .section-sub {
            text-align: center;
            color: var(--text-muted);
            margin-bottom: 2.5rem;
            font-size: 1rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            cursor: pointer;
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .related-card .card-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .related-card .card-img .card-tag {
            position: absolute;
            top: 0.8rem;
            left: 0.8rem;
            background: rgba(0,0,0,0.55);
            backdrop-filter: blur(6px);
            color: #fff;
            padding: 0.2rem 0.8rem;
            border-radius: 2rem;
            font-size: 0.75rem;
            font-weight: 500;
        }
        .related-card .card-body {
            padding: 1.3rem 1.5rem 1.5rem;
        }
        .related-card .card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.4rem;
            line-height: 1.4;
        }
        .related-card .card-body p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0.8rem;
        }
        .related-card .card-body .card-link {
            font-weight: 600;
            color: var(--primary);
            font-size: 0.88rem;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .related-card .card-body .card-link i { transition: transform var(--transition); }
        .related-card:hover .card-body .card-link i { transform: translateX(4px); }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 4rem 0;
            background: var(--bg-card);
        }
        .faq-section .section-title {
            text-align: center;
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
        }
        .faq-section .section-sub {
            text-align: center;
            color: var(--text-muted);
            margin-bottom: 2.5rem;
            font-size: 1rem;
        }
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        .faq-item {
            background: var(--bg-body);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 1.5rem;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-dark);
            text-align: left;
            gap: 1rem;
            transition: background var(--transition);
        }
        .faq-question:hover { background: rgba(37,99,235,0.03); }
        .faq-question i { color: var(--primary); font-size: 0.9rem; transition: transform var(--transition); }
        .faq-item.open .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }
        .faq-answer-inner {
            padding: 0 1.5rem 1.2rem;
            color: var(--text-muted);
            font-size: 0.93rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer { max-height: 300px; }

        /* ===== CTA ===== */
        .cta-section {
            padding: 4rem 0;
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
        }
        .cta-section .container { position: relative; z-index: 1; }
        .cta-section h2 {
            font-size: clamp(1.5rem, 3.5vw, 2.2rem);
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.8rem;
        }
        .cta-section p {
            color: rgba(255,255,255,0.70);
            max-width: 600px;
            margin: 0 auto 1.8rem;
            font-size: 1.05rem;
        }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 2.4rem;
            background: var(--secondary);
            color: #0f172a;
            font-weight: 700;
            font-size: 1.05rem;
            border-radius: 2rem;
            transition: all var(--transition);
            box-shadow: 0 6px 20px rgba(245,158,11,0.35);
        }
        .cta-section .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(245,158,11,0.45);
            background: var(--secondary-dark);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            color: rgba(255,255,255,0.80);
            padding: 3.5rem 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2rem;
            padding-bottom: 2rem;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .footer-brand .footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.8rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .footer-brand .footer-logo i { color: var(--secondary); }
        .footer-brand p {
            font-size: 0.88rem;
            color: rgba(255,255,255,0.55);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h5 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }
        .footer-col ul { list-style: none; }
        .footer-col ul li { margin-bottom: 0.5rem; }
        .footer-col ul li a {
            color: rgba(255,255,255,0.55);
            font-size: 0.88rem;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover { color: var(--secondary); }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            padding: 1.5rem 0;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.40);
        }
        .footer-bottom a { color: rgba(255,255,255,0.50); }
        .footer-bottom a:hover { color: var(--secondary); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .nav-toggle { display: flex; }
            .nav-links {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 1.2rem 1.5rem 2rem;
                gap: 0.4rem;
                box-shadow: 0 20px 40px rgba(0,0,0,0.08);
                transform: translateY(-110%);
                opacity: 0;
                transition: all 0.4s ease;
                border-bottom: 1px solid var(--border);
                z-index: 999;
                border-radius: 0 0 var(--radius) var(--radius);
            }
            .nav-links.open { transform: translateY(0); opacity: 1; }
            .nav-links li a { width: 100%; padding: 0.7rem 1rem; border-radius: var(--radius-sm); }
            .nav-cta-desktop { display: none !important; }
            .nav-cta-mobile { display: inline-flex !important; margin-top: 0.4rem; justify-content: center; }
            .article-wrapper { padding: 1.5rem 1.2rem; }
            .article-footer-meta { flex-direction: column; align-items: flex-start; }
            .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .related-grid { grid-template-columns: 1fr; }
        }
        @media (max-width: 520px) {
            .nav-container { padding: 0 1rem; }
            .nav-logo { font-size: 1.1rem; }
            .article-hero { min-height: 280px; padding: 2.5rem 1rem; }
            .article-hero-content h1 { font-size: 1.4rem; }
            .article-section { padding: 2rem 0; }
            .article-wrapper { padding: 1.2rem 1rem; border-radius: var(--radius-sm); }
            .faq-question { font-size: 0.9rem; padding: 0.8rem 1rem; }
        }
        @media (min-width: 769px) {
            .nav-cta-mobile { display: none !important; }
            .nav-links { display: flex !important; opacity: 1 !important; transform: none !important; position: static !important; box-shadow: none !important; background: none !important; backdrop-filter: none !important; padding: 0 !important; border: none !important; }
        }

/* roulang page: category1 */
:root {
            --primary: #1e3a5f;
            --primary-light: #2a5298;
            --primary-dark: #0f2440;
            --accent: #f5a623;
            --accent-hover: #e09512;
            --bg-light: #f8fafc;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-muted: #6b7280;
            --text-light: #f1f5f9;
            --border-light: #e2e8f0;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.10);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', 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(--bg-light);
            color: var(--text-dark);
            line-height: 1.7;
            font-size: 1rem;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        a:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 4px;
            border-radius: 4px;
        }
        button:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 4px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header & Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.6);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.97);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
        }
        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.5px;
        }
        .nav-logo i {
            color: var(--accent);
            font-size: 1.6rem;
            transition: var(--transition);
        }
        .nav-logo:hover i {
            transform: scale(1.1) rotate(-8deg);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }
        .nav-links li a {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            position: relative;
        }
        .nav-links li a:hover {
            color: var(--primary);
            background: rgba(30, 58, 95, 0.06);
        }
        .nav-links li a.active {
            color: var(--primary);
            background: rgba(30, 58, 95, 0.10);
            font-weight: 600;
        }
        .nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .nav-cta {
            background: linear-gradient(135deg, var(--accent), #e08e0b) !important;
            color: #fff !important;
            font-weight: 600 !important;
            padding: 10px 26px !important;
            border-radius: 40px !important;
            box-shadow: 0 4px 16px rgba(245, 166, 35, 0.30);
            transition: var(--transition) !important;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 166, 35, 0.40) !important;
            background: linear-gradient(135deg, #f5a623, #d4850a) !important;
        }
        .nav-cta-mobile {
            display: none;
            background: linear-gradient(135deg, var(--accent), #e08e0b);
            color: #fff !important;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: 40px;
            box-shadow: 0 4px 16px rgba(245, 166, 35, 0.25);
            text-align: center;
            margin-top: 6px;
        }
        .nav-cta-desktop {
            display: inline-flex;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
            flex-direction: column;
            gap: 5px;
        }
        .nav-toggle span {
            display: block;
            width: 28px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 6px);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -6px);
        }
        @media (max-width: 820px) {
            .nav-links {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 24px 20px 32px;
                gap: 10px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
                pointer-events: none;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-links li a {
                width: 100%;
                padding: 12px 20px;
                font-size: 1.05rem;
                border-radius: 12px;
            }
            .nav-links li a.active::after {
                display: none;
            }
            .nav-cta-desktop {
                display: none !important;
            }
            .nav-cta-mobile {
                display: block;
                width: 100%;
                margin-top: 8px;
            }
            .nav-toggle {
                display: flex;
            }
        }
        @media (max-width: 480px) {
            .nav-logo {
                font-size: 1.25rem;
            }
            .nav-logo i {
                font-size: 1.3rem;
            }
            .nav-container {
                padding: 0 16px;
                height: 64px;
            }
            .nav-links {
                top: 64px;
                padding: 20px 16px 28px;
            }
        }

        /* ===== Hero ===== */
        .hero-section {
            padding: 130px 0 80px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 120px;
            background: linear-gradient(to top, var(--bg-light), transparent);
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
            text-align: center;
            margin: 0 auto;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(245, 166, 35, 0.20);
            color: var(--accent);
            padding: 6px 20px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            backdrop-filter: blur(6px);
            border: 1px solid rgba(245, 166, 35, 0.25);
            margin-bottom: 20px;
        }
        .hero-title {
            font-size: 3.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }
        .hero-title span {
            color: var(--accent);
        }
        .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.80);
            max-width: 620px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .hero-actions .btn-primary {
            background: var(--accent);
            color: #fff;
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1.05rem;
            box-shadow: 0 8px 28px rgba(245, 166, 35, 0.30);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-actions .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(245, 166, 35, 0.40);
            background: #e09512;
        }
        .hero-actions .btn-secondary {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            padding: 14px 32px;
            border-radius: 40px;
            font-weight: 500;
            font-size: 1.05rem;
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.20);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .hero-actions .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.22);
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            .hero-section {
                padding: 110px 0 60px;
                min-height: 420px;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-subtitle {
                font-size: 1rem;
                padding: 0 10px;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }
        @media (max-width: 480px) {
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-subtitle {
                font-size: 0.92rem;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Section通用 ===== */
        .section-padding {
            padding: 80px 0;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary);
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-desc {
            text-align: center;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto 48px;
            font-size: 1.05rem;
        }
        @media (max-width: 640px) {
            .section-padding {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-desc {
                font-size: 0.95rem;
                margin-bottom: 32px;
            }
        }

        /* ===== 优势板块 ===== */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .advantage-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            text-align: center;
        }
        .advantage-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(245, 166, 35, 0.20);
        }
        .advantage-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(30, 58, 95, 0.08), rgba(245, 166, 35, 0.10));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.6rem;
            color: var(--accent);
            transition: var(--transition);
        }
        .advantage-card:hover .advantage-icon {
            background: linear-gradient(135deg, var(--accent), #e08e0b);
            color: #fff;
            transform: scale(1.05);
        }
        .advantage-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .advantage-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        @media (max-width: 820px) {
            .advantages-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 520px) {
            .advantages-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .advantage-card {
                padding: 28px 20px;
            }
        }

        /* ===== 游戏分类卡片 ===== */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            cursor: pointer;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(245, 166, 35, 0.20);
        }
        .category-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
            transition: var(--transition);
        }
        .category-card:hover .card-img {
            transform: scale(1.03);
        }
        .category-card .card-body {
            padding: 18px 20px 22px;
        }
        .category-card .card-tag {
            display: inline-block;
            background: rgba(245, 166, 35, 0.12);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 20px;
            margin-bottom: 8px;
        }
        .category-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 6px;
        }
        .category-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }
        @media (max-width: 960px) {
            .categories-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 520px) {
            .categories-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .category-card .card-img {
                height: 160px;
            }
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            position: relative;
            padding: 32px 18px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 36px;
            height: 36px;
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(245, 166, 35, 0.25);
        }
        .step-item .step-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 14px;
            margin-top: 6px;
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .step-item p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }
        @media (max-width: 820px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 480px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .step-item {
                padding: 28px 16px 20px;
            }
        }

        /* ===== 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-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(245, 166, 35, 0.20);
        }
        .faq-question {
            width: 100%;
            padding: 18px 22px;
            background: none;
            border: none;
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary);
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: var(--transition);
        }
        .faq-question i {
            color: var(--accent);
            transition: var(--transition);
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-question:hover {
            background: rgba(30, 58, 95, 0.02);
        }
        .faq-answer {
            padding: 0 22px 18px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }
        @media (max-width: 640px) {
            .faq-question {
                padding: 16px 16px;
                font-size: 0.95rem;
            }
            .faq-answer {
                padding: 0 16px 16px;
                font-size: 0.9rem;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary), var(--primary-light));
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-desc {
            color: rgba(255, 255, 255, 0.80);
            max-width: 560px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: #fff;
            padding: 16px 44px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1.1rem;
            box-shadow: 0 8px 28px rgba(245, 166, 35, 0.30);
            transition: var(--transition);
        }
        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(245, 166, 35, 0.40);
            background: #e09512;
        }
        .cta-stats {
            display: flex;
            justify-content: center;
            gap: 48px;
            margin-top: 40px;
            flex-wrap: wrap;
        }
        .cta-stat {
            text-align: center;
        }
        .cta-stat .num {
            font-size: 2rem;
            font-weight: 700;
            color: var(--accent);
            display: block;
        }
        .cta-stat .label {
            color: rgba(255, 255, 255, 0.70);
            font-size: 0.9rem;
        }
        @media (max-width: 640px) {
            .cta-section {
                padding: 56px 0;
            }
            .cta-title {
                font-size: 1.6rem;
            }
            .cta-desc {
                font-size: 0.95rem;
                padding: 0 12px;
            }
            .cta-btn {
                padding: 14px 32px;
                font-size: 1rem;
                width: 100%;
                justify-content: center;
            }
            .cta-stats {
                gap: 24px;
            }
            .cta-stat .num {
                font-size: 1.6rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.80);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-logo i {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.60);
            max-width: 360px;
        }
        .footer-col h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.60);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        @media (max-width: 820px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: span 2;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: span 1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 统计数字 ===== */
        .stats-banner {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 40px 32px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: -40px;
            position: relative;
            z-index: 3;
        }
        .stat-item {
            text-align: center;
            padding: 8px 0;
            border-right: 1px solid var(--border-light);
        }
        .stat-item:last-child {
            border-right: none;
        }
        .stat-item .stat-num {
            font-size: 2rem;
            font-weight: 700;
            color: var(--accent);
        }
        .stat-item .stat-label {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .stats-banner {
                grid-template-columns: repeat(2, 1fr);
                padding: 28px 20px;
                margin-top: -30px;
            }
            .stat-item:nth-child(2) {
                border-right: none;
            }
            .stat-item .stat-num {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 480px) {
            .stats-banner {
                grid-template-columns: 1fr 1fr;
                padding: 20px 16px;
                margin-top: -20px;
            }
            .stat-item {
                border-right: none;
            }
            .stat-item .stat-num {
                font-size: 1.3rem;
            }
        }

        /* ===== 分隔装饰 ===== */
        .divider-wave {
            width: 100%;
            height: 40px;
            background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 40'%3E%3Cpath d='M0,20 Q150,0 300,20 T600,20 T900,20 T1200,20 L1200,40 L0,40 Z' fill='%23f8fafc'/%3E%3C/svg%3E") center center / cover no-repeat;
            display: block;
        }

        /* ===== 辅助 ===== */
        .text-accent {
            color: var(--accent);
        }
        .bg-soft {
            background: #f1f5f9;
        }
        .rounded-card {
            border-radius: var(--radius-md);
        }
        .shadow-card {
            box-shadow: var(--shadow-sm);
        }
        .gap-section {
            gap: 24px;
        }