/* roulang page: index */
:root {
            --bg-base: #090D16;
            --bg-alt: #0F172A;
            --bg-card: #131D31;
            --bg-card-hover: #18253E;
            --neon-green: #00F59B;
            --neon-green-glow: rgba(0, 245, 155, 0.35);
            --electric-blue: #00D2FF;
            --alert-orange: #FF5C38;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --border-line: rgba(0, 245, 155, 0.16);
            --border-subtle: rgba(255, 255, 255, 0.08);
            --font-main: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        html {
            scroll-behavior: smooth;
            background-color: var(--bg-base);
            color: var(--text-primary);
        }

        body {
            font-family: var(--font-main);
            background-color: var(--bg-base);
            color: var(--text-primary);
            line-height: 1.75;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

        a:hover, a:focus {
            color: #5effc3;
            text-decoration: none;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-primary);
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-top: 0;
        }

        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-md);
            display: block;
        }

        /* 顶部微型信息栏 */
        .top-meta-bar {
            background-color: #05080E;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            padding: 8px 0;
            font-size: 0.82rem;
            color: var(--text-secondary);
        }
        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--neon-green);
            font-weight: 500;
        }
        .status-dot {
            width: 8px;
            height: 8px;
            background-color: var(--neon-green);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--neon-green);
            animation: pulseDot 2s infinite;
        }
        @keyframes pulseDot {
            0% { transform: scale(0.95); opacity: 0.8; }
            50% { transform: scale(1.2); opacity: 1; }
            100% { transform: scale(0.95); opacity: 0.8; }
        }

        /* 主导航条 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 999;
            background: rgba(9, 13, 22, 0.88);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-line);
        }
        .main-nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: #FFFFFF;
            letter-spacing: 0.5px;
        }
        .brand-logo i {
            color: var(--neon-green);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 6px var(--neon-green));
        }
        .brand-logo span {
            background: linear-gradient(90deg, #FFFFFF, #B9E6D3);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-menu {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 1.5rem;
        }
        .nav-menu a {
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            position: relative;
            padding: 6px 2px;
        }
        .nav-menu a:hover,
        .nav-menu a.active {
            color: #FFFFFF;
        }
        .nav-menu a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--neon-green);
            box-shadow: 0 0 8px var(--neon-green);
            transition: var(--transition-smooth);
        }
        .nav-menu a:hover::after,
        .nav-menu a.active::after {
            width: 100%;
        }

        /* 基础按钮组件 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 24px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-smooth);
            text-align: center;
            min-height: 46px;
        }
        .btn-neon {
            background: var(--neon-green);
            color: #05080E !important;
            border: 1px solid var(--neon-green);
            box-shadow: 0 0 16px rgba(0, 245, 155, 0.3);
        }
        .btn-neon:hover {
            background: #25fba8;
            box-shadow: 0 0 24px rgba(0, 245, 155, 0.55);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: rgba(255, 255, 255, 0.03);
            color: #FFFFFF !important;
            border: 1px solid rgba(255, 255, 255, 0.18);
        }
        .btn-outline:hover {
            border-color: var(--neon-green);
            color: var(--neon-green) !important;
            background: rgba(0, 245, 155, 0.05);
            transform: translateY(-2px);
        }

        /* 板块公用样式 */
        .content-section {
            padding: 5.5rem 0;
            position: relative;
        }
        .section-alt {
            background-color: var(--bg-alt);
        }
        .section-header {
            margin-bottom: 3.2rem;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 30px;
            background: rgba(0, 245, 155, 0.08);
            border: 1px solid rgba(0, 245, 155, 0.25);
            color: var(--neon-green);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            margin-bottom: 0.8rem;
        }
        .section-title {
            font-size: 2.25rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        .section-subtitle {
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.75;
            max-width: 860px;
            margin: 0 auto;
        }

        /* 卡片基础 */
        .cyber-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 2rem;
            transition: var(--transition-smooth);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .cyber-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, rgba(0, 245, 155, 0.3), transparent);
            opacity: 0;
            transition: var(--transition-smooth);
        }
        .cyber-card:hover {
            border-color: rgba(0, 245, 155, 0.4);
            transform: translateY(-4px);
            background: var(--bg-card-hover);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
        }
        .cyber-card:hover::before {
            opacity: 1;
        }

        /* 1. HERO SECTION */
        .hero-section {
            padding: 4.5rem 0 5rem 0;
            position: relative;
            background: radial-gradient(circle at 70% 30%, rgba(0, 210, 255, 0.08), transparent 60%),
                        radial-gradient(circle at 20% 70%, rgba(0, 245, 155, 0.06), transparent 50%),
                        url('/assets/images/45b52ed448c342bb.png') center/cover no-repeat;
            background-blend-mode: overlay;
        }
        .hero-h1 {
            font-size: 2.85rem;
            line-height: 1.25;
            margin-bottom: 1.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, #FFFFFF 30%, #BFE7D5 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-desc {
            font-size: 1.12rem;
            color: #CBD5E1;
            margin-bottom: 2rem;
            line-height: 1.8;
        }
        .hero-metric-pill-row {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 2.2rem;
        }
        .metric-pill {
            background: rgba(19, 29, 49, 0.7);
            border: 1px solid rgba(0, 245, 155, 0.2);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.88rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .metric-pill i {
            color: var(--neon-green);
        }
        .hero-visual-card {
            background: rgba(19, 29, 49, 0.85);
            border: 1px solid rgba(0, 245, 155, 0.25);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(8px);
        }
        .vertical-stage {
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.1);
            overflow: hidden;
            position: relative;
        }
        .stage-badge {
            position: absolute;
            top: 14px;
            right: 14px;
            background: rgba(5, 8, 14, 0.8);
            border: 1px solid var(--alert-orange);
            color: var(--alert-orange);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 5px;
        }

        /* 2. OVERVIEW */
        .arch-diagram {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .arch-node {
            background: rgba(15, 23, 42, 0.8);
            border: 1px solid rgba(0, 210, 255, 0.2);
            padding: 1.2rem;
            border-radius: var(--radius-md);
            position: relative;
        }
        .arch-node-title {
            color: var(--electric-blue);
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 0.3rem;
            display: flex;
            justify-content: space-between;
        }
        .spec-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 1.2rem;
        }
        .spec-icon {
            width: 36px;
            height: 36px;
            background: rgba(0, 245, 155, 0.1);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--neon-green);
            flex-shrink: 0;
        }

        /* 3. CORE ADVANTAGES */
        .advantage-icon {
            font-size: 2rem;
            color: var(--neon-green);
            margin-bottom: 1.2rem;
        }

        /* 4. PRODUCTS */
        .product-card {
            border-top: 3px solid var(--neon-green);
        }
        .product-tag {
            font-size: 0.75rem;
            padding: 3px 8px;
            border-radius: 4px;
            background: rgba(0, 210, 255, 0.15);
            color: var(--electric-blue);
            display: inline-block;
            margin-bottom: 0.8rem;
        }
        .feature-bullets {
            list-style: none;
            padding: 0;
            margin: 1.2rem 0;
            color: var(--text-secondary);
            font-size: 0.92rem;
        }
        .feature-bullets li {
            padding: 6px 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .feature-bullets li i {
            color: var(--neon-green);
            font-size: 0.8rem;
        }

        /* 5. SCENARIOS */
        .scenario-box {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            height: 100%;
        }

        /* 6. WORKFLOW / STEPS */
        .workflow-step {
            position: relative;
            padding: 1.5rem;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
        }
        .step-num {
            font-family: var(--font-mono);
            font-size: 2.2rem;
            font-weight: 800;
            color: rgba(0, 245, 155, 0.25);
            line-height: 1;
            margin-bottom: 0.5rem;
        }

        /* 7. DEMO WORKSPACE */
        .demo-cockpit {
            background: #080D18;
            border: 1px solid rgba(0, 245, 155, 0.3);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 20px 50px rgba(0,0,0,0.7);
        }
        .demo-bar {
            background: #0D1424;
            padding: 10px 16px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.85rem;
            color: var(--text-secondary);
        }
        .demo-log-line {
            font-family: var(--font-mono);
            font-size: 0.82rem;
            padding: 6px 12px;
            background: rgba(0,0,0,0.3);
            border-left: 2px solid var(--neon-green);
            margin-bottom: 6px;
        }

        /* 8. PHILOSOPHY */
        .philosophy-banner {
            border-left: 4px solid var(--neon-green);
            background: linear-gradient(90deg, rgba(0, 245, 155, 0.05), transparent);
            padding: 2.5rem;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
        }

        /* 9. CASES */
        .case-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 1rem;
            font-size: 0.9rem;
        }
        .case-table th, .case-table td {
            padding: 10px;
            text-align: left;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .case-table th {
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 10. METRICS */
        .metric-item {
            text-align: center;
            padding: 1.5rem;
        }
        .metric-val {
            font-family: var(--font-mono);
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--neon-green);
            line-height: 1.1;
            margin-bottom: 0.5rem;
            text-shadow: 0 0 16px rgba(0, 245, 155, 0.3);
        }
        .metric-label {
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        /* 11. PRICING */
        .price-card {
            position: relative;
        }
        .price-card.popular {
            border: 2px solid var(--neon-green);
            box-shadow: 0 0 25px rgba(0, 245, 155, 0.2);
            transform: scale(1.02);
        }
        .popular-badge {
            position: absolute;
            top: -14px;
            right: 20px;
            background: var(--neon-green);
            color: #05080E;
            font-weight: 700;
            font-size: 0.75rem;
            padding: 3px 12px;
            border-radius: 20px;
        }
        .price-number {
            font-family: var(--font-mono);
            font-size: 2.2rem;
            color: #FFFFFF;
            font-weight: 800;
            margin: 1.2rem 0;
        }

        /* 12. TESTIMONIALS */
        .user-avatar-placeholder {
            width: 48px;
            height: 48px;
            background: #1E293B;
            border: 1px solid var(--neon-green);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--neon-green);
            font-weight: bold;
        }

        /* 13. NEWS / RESEARCH */
        .news-date {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 0.4rem;
        }

        /* 14. CTA & FORM */
        .cta-box {
            background: linear-gradient(135deg, #131E33 0%, #0D1424 100%);
            border: 1px solid rgba(0, 245, 155, 0.35);
            border-radius: var(--radius-lg);
            padding: 3.5rem 2.5rem;
            box-shadow: 0 20px 60px rgba(0,0,0,0.5);
        }
        .cyber-input {
            width: 100%;
            height: 46px;
            background: #090D16;
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-sm);
            color: #FFFFFF;
            padding: 0 14px;
            margin-bottom: 1.2rem;
            transition: var(--transition-smooth);
        }
        .cyber-input:focus {
            border-color: var(--neon-green);
            outline: none;
            box-shadow: 0 0 10px rgba(0, 245, 155, 0.25);
            background: #0c1220;
        }
        .cyber-select {
            width: 100%;
            height: 46px;
            background: #090D16;
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-sm);
            color: #FFFFFF;
            padding: 0 14px;
            margin-bottom: 1.2rem;
        }

        /* FOOTER */
        .site-footer {
            background: #05080E;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 4.5rem 0 2rem 0;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        .footer-heading {
            color: #FFFFFF;
            font-size: 1.05rem;
            margin-bottom: 1.2rem;
            font-weight: 600;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: var(--text-secondary);
        }
        .footer-links a:hover {
            color: var(--neon-green);
        }
        .copyright-bar {
            margin-top: 3.5rem;
            padding-top: 1.8rem;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        /* 移动端与响应式适配 */
        @media screen and (max-width: 1024px) {
            .hero-h1 { font-size: 2.3rem; }
            .section-title { font-size: 1.9rem; }
            .content-section { padding: 4rem 0; }
        }
        @media screen and (max-width: 768px) {
            .nav-menu { display: none; }
            .hero-h1 { font-size: 1.85rem; }
            .hero-metric-pill-row { flex-direction: column; }
            .metric-val { font-size: 2.2rem; }
            .cta-box { padding: 2rem 1.2rem; }
            .price-card.popular { transform: none; }
        }