/* roulang page: index */
:root {
            --bg-deep: #070b14;
            --bg-dark: #0d1527;
            --bg-card: rgba(15, 23, 42, 0.72);
            --bg-card-hover: rgba(22, 33, 62, 0.85);
            --border-glow: rgba(0, 240, 255, 0.28);
            --border-subtle: rgba(255, 255, 255, 0.08);
            --cyan-glow: #00f0ff;
            --blue-primary: #3b82f6;
            --indigo-accent: #6366f1;
            --emerald-badge: #10b981;
            --text-bright: #ffffff;
            --text-main: #e2e8f0;
            --text-muted: #94a3b8;
            --text-dim: #64748b;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-card: 0 20px 30px -10px rgba(0, 0, 0, 0.55);
            --shadow-glow: 0 0 25px rgba(0, 240, 255, 0.35);
            --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            background-color: var(--bg-deep);
            color: var(--text-main);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            line-height: 1.75;
            overflow-x: hidden;
            background-image: 
                radial-gradient(circle at 15% 10%, rgba(59, 130, 246, 0.12) 0%, transparent 45%),
                radial-gradient(circle at 85% 60%, rgba(0, 240, 255, 0.08) 0%, transparent 40%),
                radial-gradient(circle at 50% 90%, rgba(99, 102, 241, 0.1) 0%, transparent 50%);
            background-attachment: fixed;
        }

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

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

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

        /* 布局容器 */
        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 顶部双行导航系统 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(7, 11, 20, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
        }

        .header-topbar {
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 0.8125rem;
            color: var(--text-dim);
            padding: 6px 0;
        }

        .topbar-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .system-status {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

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

        .topbar-links {
            display: flex;
            gap: 20px;
        }

        .topbar-links a:hover {
            color: var(--cyan-glow);
        }

        .header-main {
            padding: 14px 0;
        }

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

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--text-bright);
            letter-spacing: 0.5px;
        }

        .logo-symbol {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--cyan-glow), var(--blue-primary));
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
        }

        .logo-symbol svg {
            width: 20px;
            height: 20px;
            fill: #070b14;
        }

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

        .nav-item a {
            color: var(--text-main);
            font-size: 0.9375rem;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            position: relative;
        }

        .nav-item a:hover {
            color: var(--cyan-glow);
        }

        .nav-item a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 2px;
            background: var(--cyan-glow);
            transition: var(--transition-smooth);
            transform: translateX(-50%);
        }

        .nav-item a:hover::after {
            width: 80%;
        }

        .header-action-btn {
            background: linear-gradient(135deg, var(--cyan-glow) 0%, var(--blue-primary) 100%);
            color: #070b14 !important;
            font-weight: 700;
            padding: 9px 22px;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-glow);
            border: none;
            cursor: pointer;
            font-size: 0.875rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .header-action-btn:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.65);
            transform: translateY(-2px);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 8px;
        }

        .mobile-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--text-bright);
            margin: 5px 0;
            transition: var(--transition-smooth);
        }

        /* 板块通用规范 */
        main {
            padding-top: 110px;
        }

        .content-section {
            padding: 84px 0;
            position: relative;
        }

        .section-alt {
            background: rgba(13, 21, 39, 0.5);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .section-header {
            margin-bottom: 48px;
            max-width: 880px;
        }

        .section-header.center {
            text-align: center;
            margin-left: auto;
            margin-right: auto;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8125rem;
            font-weight: 600;
            color: var(--cyan-glow);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.2);
            margin-bottom: 16px;
        }

        .section-title {
            font-size: 2.125rem;
            font-weight: 800;
            color: var(--text-bright);
            line-height: 1.35;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }

        .section-subtitle {
            font-size: 1.0625rem;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* 玻璃拟态卡片基础 */
        .glass-panel {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 32px;
            box-shadow: var(--shadow-card);
            transition: var(--transition-smooth);
        }

        .glass-panel:hover {
            border-color: var(--border-glow);
            transform: translateY(-4px);
            box-shadow: 0 25px 40px -15px rgba(0, 240, 255, 0.15);
        }

        /* 1. Hero 板块：试用申请 + Bento 框架 */
        .hero-section {
            padding: 60px 0 90px;
            position: relative;
            overflow: hidden;
            background-size: cover;
            background-position: center;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7, 11, 20, 0.85) 0%, rgba(7, 11, 20, 0.95) 100%);
            z-index: 1;
        }

        .hero-container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            align-items: center;
        }

        .hero-badge-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 24px;
        }

        .hero-pill {
            background: rgba(16, 185, 129, 0.12);
            color: var(--emerald-badge);
            border: 1px solid rgba(16, 185, 129, 0.3);
            font-size: 0.8125rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .hero-title {
            font-size: 2.75rem;
            font-weight: 900;
            color: var(--text-bright);
            line-height: 1.25;
            margin-bottom: 24px;
            letter-spacing: -1px;
        }

        .hero-title span {
            background: linear-gradient(135deg, #ffffff 0%, var(--cyan-glow) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-intro {
            font-size: 1.125rem;
            color: var(--text-main);
            margin-bottom: 32px;
            line-height: 1.85;
        }

        .hero-meta-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .hero-meta-card {
            background: rgba(255, 255, 255, 0.03);
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        .meta-val {
            font-size: 1.375rem;
            font-weight: 800;
            color: var(--cyan-glow);
            font-family: monospace;
        }

        .meta-lbl {
            font-size: 0.8125rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* 试用申请面板 */
        .trial-card {
            background: rgba(15, 23, 42, 0.82);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border: 1px solid rgba(0, 240, 255, 0.35);
            border-radius: var(--radius-lg);
            padding: 36px;
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.15);
        }

        .trial-card-head {
            margin-bottom: 20px;
        }

        .trial-card-title {
            font-size: 1.375rem;
            font-weight: 700;
            color: var(--text-bright);
            margin-bottom: 8px;
        }

        .trial-card-desc {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .trial-specs {
            list-style: none;
            margin-bottom: 24px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .trial-specs li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.875rem;
            color: var(--text-main);
        }

        .trial-specs li svg {
            width: 16px;
            height: 16px;
            fill: var(--cyan-glow);
            flex-shrink: 0;
        }

        .trial-form-compact {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .input-group input, .input-group select {
            width: 100%;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            background: rgba(7, 11, 20, 0.8);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-bright);
            font-size: 0.9375rem;
            transition: var(--transition-smooth);
        }

        .input-group input:focus, .input-group select:focus {
            border-color: var(--cyan-glow);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.25);
        }

        .submit-trial-btn {
            background: linear-gradient(135deg, var(--cyan-glow), var(--blue-primary));
            color: #070b14;
            font-weight: 700;
            padding: 14px;
            border-radius: var(--radius-sm);
            border: none;
            cursor: pointer;
            font-size: 1rem;
            box-shadow: var(--shadow-glow);
            transition: var(--transition-smooth);
            width: 100%;
        }

        .submit-trial-btn:hover {
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.7);
            transform: translateY(-2px);
        }

        /* 2. 安全主张板块 */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .sec-card {
            border-left: 3px solid var(--blue-primary);
        }

        .sec-card:hover {
            border-left-color: var(--cyan-glow);
        }

        .sec-icon-box {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(59, 130, 246, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--cyan-glow);
        }

        .sec-card h3 {
            font-size: 1.25rem;
            color: var(--text-bright);
            margin-bottom: 12px;
        }

        .sec-card p {
            font-size: 0.9375rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 3. 检查项板块 */
        .checklist-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .check-item-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }

        .check-num-badge {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--cyan-glow);
            font-family: monospace;
            background: rgba(0, 240, 255, 0.1);
            width: 44px;
            height: 44px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            border: 1px solid rgba(0, 240, 255, 0.2);
        }

        .check-content h4 {
            font-size: 1.125rem;
            color: var(--text-bright);
            margin-bottom: 8px;
        }

        .check-content p {
            font-size: 0.875rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 4. 合规徽章板块 */
        .badge-wall {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .badge-card {
            text-align: center;
            padding: 30px 20px;
            background: rgba(15, 23, 42, 0.5);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            transition: var(--transition-smooth);
        }

        .badge-card:hover {
            border-color: var(--emerald-badge);
            background: rgba(16, 185, 129, 0.05);
            transform: translateY(-3px);
        }

        .badge-icon {
            width: 52px;
            height: 52px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: rgba(16, 185, 129, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--emerald-badge);
        }

        .badge-name {
            font-size: 1.0625rem;
            font-weight: 700;
            color: var(--text-bright);
            margin-bottom: 8px;
        }

        .badge-desc {
            font-size: 0.8125rem;
            color: var(--text-dim);
            line-height: 1.6;
        }

        /* 5. 边界说明板块 */
        .spec-table-card {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
            background: var(--bg-card);
        }

        .spec-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            font-size: 0.9375rem;
        }

        .spec-table th, .spec-table td {
            padding: 18px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .spec-table th {
            background: rgba(7, 11, 20, 0.9);
            color: var(--cyan-glow);
            font-weight: 600;
            text-transform: uppercase;
            font-size: 0.8125rem;
            letter-spacing: 1px;
        }

        .spec-table tr:last-child td {
            border-bottom: none;
        }

        .spec-table tr:hover td {
            background: rgba(255, 255, 255, 0.02);
        }

        .pill-tag {
            padding: 3px 8px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(59, 130, 246, 0.15);
            color: var(--blue-primary);
        }

        /* 6. 系统总览与图文深度区 */
        .overview-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .mockup-frame {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(0, 240, 255, 0.3);
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.15);
        }

        .mockup-frame img {
            width: 100%;
            height: auto;
            transition: transform 0.5s ease;
        }

        .mockup-frame:hover img {
            transform: scale(1.03);
        }

        .param-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-top: 24px;
        }

        .param-item {
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }

        .param-icon {
            width: 24px;
            height: 24px;
            color: var(--cyan-glow);
            flex-shrink: 0;
            margin-top: 3px;
        }

        /* 7. 核心优势六矩阵 */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .matrix-card {
            position: relative;
            overflow: hidden;
        }

        .matrix-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--cyan-glow), transparent);
            opacity: 0;
            transition: var(--transition-smooth);
        }

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

        .matrix-icon {
            width: 44px;
            height: 44px;
            margin-bottom: 20px;
            color: var(--cyan-glow);
        }

        .matrix-card h3 {
            font-size: 1.25rem;
            color: var(--text-bright);
            margin-bottom: 12px;
        }

        .matrix-card p {
            font-size: 0.9375rem;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* 8. 核心产品板块 */
        .products-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        .product-card {
            position: relative;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .product-highlight {
            border-color: rgba(0, 240, 255, 0.45);
            background: rgba(15, 23, 42, 0.85);
        }

        .product-badge-top {
            position: absolute;
            top: -12px;
            right: 24px;
            background: linear-gradient(135deg, var(--cyan-glow), var(--blue-primary));
            color: #070b14;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 3px 12px;
            border-radius: 999px;
            box-shadow: 0 0 10px rgba(0, 240, 255, 0.4);
        }

        .prod-features {
            list-style: none;
            margin: 24px 0 32px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .prod-features li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.875rem;
            color: var(--text-main);
        }

        .prod-features li svg {
            width: 14px;
            height: 14px;
            fill: var(--emerald-badge);
            flex-shrink: 0;
                }\n\n        .prod-features li {\n            display: flex;\n            align-items: center;\n            gap: 8px;\n        }\n\n        .prod-features li p {\n            margin: 0;\n        }\n\n        .prod-features h2 {\n            margin-bottom: 24px;\n        }\n