/* roulang page: index */
:root {
            --bg-primary: #0B0E14;
            --bg-secondary: #121721;
            --bg-card: #1A202C;
            --bg-card-hover: #222B3C;
            --accent-cyan: #00F0B5;
            --accent-purple: #7928CA;
            --text-heading: #F8FAFC;
            --text-body: #94A3B8;
            --text-muted: #64748B;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-active: rgba(0, 240, 181, 0.35);
            --radius-md: 12px;
            --radius-lg: 16px;
            --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
            --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
            --shadow-hover: 0 20px 40px -15px rgba(0, 240, 181, 0.18);
        }

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

        body {
            background-color: var(--bg-primary);
            color: var(--text-body);
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.7;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a:hover, a:focus {
            color: var(--accent-cyan);
        }

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

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 14, 20, 0.88);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            height: 72px;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .brand-logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-heading);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .brand-logo .brand-badge {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #0B0E14;
            font-size: 1rem;
        }

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

        .nav-link-item a {
            font-size: 0.95rem;
            color: var(--text-body);
            font-weight: 500;
            padding: 8px 4px;
            position: relative;
        }

        .nav-link-item a:hover,
        .nav-link-item a.active {
            color: var(--text-heading);
        }

        .nav-link-item a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
        }

        .btn-cyan {
            background-color: var(--accent-cyan);
            color: #0B0E14 !important;
            font-weight: 700;
            padding: 10px 22px;
            border-radius: 999px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1px solid var(--accent-cyan);
            position: relative;
            overflow: hidden;
            transition: var(--transition-smooth);
            cursor: pointer;
        }

        .btn-cyan:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px -5px rgba(0, 240, 181, 0.4);
        }

        .btn-cyan:active {
            transform: scale(0.98);
        }

        .btn-ghost {
            background: transparent;
            color: var(--text-heading) !important;
            border: 1px solid var(--border-subtle);
            padding: 10px 22px;
            border-radius: 999px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-smooth);
            cursor: pointer;
        }

        .btn-ghost:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan) !important;
            background: rgba(0, 240, 181, 0.05);
        }

        .app-section {
            padding: 88px 0;
            position: relative;
        }

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

        .section-heading-wrap {
            margin-bottom: 48px;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-cyan);
            background: rgba(0, 240, 181, 0.1);
            border: 1px solid rgba(0, 240, 181, 0.25);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 2.2rem;
            color: var(--text-heading);
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: 14px;
        }

        .section-desc {
            color: var(--text-body);
            max-width: 680px;
            font-size: 1.05rem;
            line-height: 1.7;
        }

        /* Hero */
        .hero-section {
            padding: 64px 0 80px;
            background: radial-gradient(circle at 50% 10%, rgba(121, 40, 202, 0.18) 0%, rgba(11, 14, 20, 0.95) 70%), url('/assets/images/c9f1a1b06757bdb0.png') center/cover no-repeat;
            position: relative;
            border-bottom: 1px solid var(--border-subtle);
        }

        .hero-status-strip {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            background: rgba(26, 32, 44, 0.85);
            border: 1px solid var(--border-subtle);
            padding: 6px 18px;
            border-radius: 30px;
            margin-bottom: 24px;
            font-size: 0.85rem;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            background: var(--accent-cyan);
            border-radius: 50%;
            box-shadow: 0 0 10px var(--accent-cyan);
            display: inline-block;
        }

        .hero-h1 {
            font-size: 3.2rem;
            font-weight: 900;
            color: var(--text-heading);
            line-height: 1.15;
            letter-spacing: -0.03em;
            margin-bottom: 20px;
        }

        .hero-lead {
            font-size: 1.1rem;
            color: var(--text-body);
            margin-bottom: 32px;
            line-height: 1.75;
        }

        .hero-btn-group {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }

        .hero-matrix-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 10px;
        }

        .hero-matrix-item {
            background: rgba(26, 32, 44, 0.7);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            display: flex;
            align-items: center;
            gap: 14px;
            backdrop-filter: blur(8px);
        }

        .matrix-icon-box {
            width: 42px;
            height: 42px;
            background: rgba(0, 240, 181, 0.08);
            border: 1px solid rgba(0, 240, 181, 0.2);
            color: var(--accent-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            font-size: 1.15rem;
        }

        .matrix-text-box h4 {
            font-size: 0.95rem;
            color: var(--text-heading);
            margin: 0 0 2px 0;
            font-weight: 700;
        }

        .matrix-text-box p {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* Generic Card */
        .glass-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-card);
            transition: var(--transition-smooth);
            height: 100%;
        }

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

        .card-icon {
            width: 52px;
            height: 52px;
            background: rgba(121, 40, 202, 0.12);
            border: 1px solid rgba(121, 40, 202, 0.3);
            color: #C084FC;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-md);
            font-size: 1.35rem;
            margin-bottom: 20px;
        }

        .card-icon.cyan {
            background: rgba(0, 240, 181, 0.1);
            border-color: rgba(0, 240, 181, 0.3);
            color: var(--accent-cyan);
        }

        .card-title {
            color: var(--text-heading);
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .card-text {
            color: var(--text-body);
            font-size: 0.92rem;
            line-height: 1.65;
            margin: 0;
        }

        /* Game Product Gallery */
        .game-showcase-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .game-showcase-card:hover {
            transform: translateY(-5px);
            border-color: var(--border-active);
            box-shadow: var(--shadow-hover);
        }

        .game-thumb {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-bottom: 1px solid var(--border-subtle);
        }

        .game-body {
            padding: 24px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .game-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 12px;
            font-size: 0.85rem;
        }

        .game-badge {
            background: rgba(255, 255, 255, 0.06);
            color: var(--accent-cyan);
            padding: 3px 10px;
            border-radius: 6px;
            font-weight: 600;
        }

        .game-rating {
            color: #FBBF24;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* Process Steps */
        .step-item {
            position: relative;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            height: 100%;
        }

        .step-number {
            font-size: 1.8rem;
            font-weight: 900;
            color: rgba(255, 255, 255, 0.1);
            position: absolute;
            top: 14px;
            right: 18px;
            line-height: 1;
        }

        .step-header {
            font-size: 1.1rem;
            color: var(--text-heading);
            font-weight: 700;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .step-point {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent-cyan);
        }

        /* KPI Banner */
        .kpi-section {
            background: linear-gradient(180deg, #121721 0%, #0B0E14 100%);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: 56px 0;
        }

        .kpi-box {
            text-align: center;
            padding: 12px;
        }

        .kpi-num {
            font-size: 3rem;
            font-weight: 900;
            color: var(--accent-cyan);
            letter-spacing: -0.03em;
            line-height: 1.1;
            margin-bottom: 8px;
        }

        .kpi-label {
            font-size: 0.95rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* News Section */
        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-card:hover {
            border-color: rgba(0, 240, 181, 0.3);
            transform: translateY(-3px);
        }

        .news-date {
            font-size: 0.82rem;
            color: var(--accent-cyan);
            margin-bottom: 8px;
            display: block;
        }

        .news-title {
            font-size: 1.15rem;
            color: var(--text-heading);
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 12px;
        }

        .news-excerpt {
            font-size: 0.88rem;
            color: var(--text-body);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        /* FAQ Accordion */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
        }

        .faq-question {
            padding: 20px 24px;
            font-size: 1.05rem;
            color: var(--text-heading);
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-question i {
            transition: transform 0.3s ease;
            color: var(--accent-cyan);
        }

        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-body);
            font-size: 0.92rem;
            line-height: 1.7;
            display: none;
        }

        .faq-item.active .faq-answer {
            display: block;
        }

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

        /* Conversion CTA */
        .cta-banner {
            background: radial-gradient(circle at 80% 50%, rgba(0, 240, 181, 0.15) 0%, rgba(121, 40, 202, 0.1) 50%, #1A202C 100%);
            border: 1px solid rgba(0, 240, 181, 0.25);
            border-radius: 20px;
            padding: 48px 40px;
            text-align: center;
        }

        /* Footer */
        .site-footer {
            background: #080A0E;
            border-top: 1px solid var(--border-subtle);
            padding: 64px 0 32px;
            color: var(--text-muted);
            font-size: 0.88rem;
        }

        .footer-heading {
            font-size: 1rem;
            color: var(--text-heading);
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-links {
            list-style: none;
            margin: 0;
        }

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

        .footer-links a {
            color: var(--text-body);
        }

        .footer-links a:hover {
            color: var(--accent-cyan);
        }

        .footer-bottom {
            margin-top: 48px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }

        .tech-box-window {
            background: #0D1117;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            overflow: hidden;
            font-family: monospace;
        }

        .tech-header {
            background: #161B22;
            padding: 10px 16px;
            display: flex;
            gap: 8px;
            align-items: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .tech-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
        }

        .tech-dot.red { background: #FF5F56; }
        .tech-dot.yellow { background: #FFBD2E; }
        .tech-dot.green { background: #27C93F; }

        .tech-content {
            padding: 20px;
            color: #7EE787;
            font-size: 0.85rem;
            line-height: 1.7;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-heading);
            font-size: 1.4rem;
            cursor: pointer;
        }

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

        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: var(--bg-secondary);
                flex-direction: column;
                padding: 24px;
                border-bottom: 1px solid var(--border-subtle);
                gap: 16px;
            }
            .nav-links.is-open {
                display: flex;
            }
            .hero-h1 {
                font-size: 2.3rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .hero-matrix-grid {
                grid-template-columns: 1fr;
            }
            .kpi-num {
                font-size: 2.2rem;
            }
            .cta-banner {
                padding: 32px 20px;
            }
        }