/* roulang page: index */
:root {
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --bg-dark: #0f172a;
      --bg-darker: #020617;
      --primary: #1e293b;
      --accent: #2563eb;
      --accent-hover: #1d4ed8;
      --text-main: #334155;
      --text-muted: #64748b;
      --text-light: #f1f5f9;
      --border-color: rgba(226, 232, 240, 0.85);
      --border-dark: rgba(255, 255, 255, 0.08);
      --radius-sm: 6px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
      --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      --container-width: 1240px;
    }
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 24px;
    }
    /* 顶部服务状态条与主导航 */
    .top-status-bar {
      background: var(--bg-darker);
      color: #94a3b8;
      font-size: 0.8125rem;
      border-bottom: 1px solid var(--border-dark);
      padding: 6px 0;
    }
    .top-status-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .status-indicator {
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      background: #10b981;
      border-radius: 50%;
      box-shadow: 0 0 8px #10b981;
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(0.9); }
      100% { opacity: 1; transform: scale(1); }
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .nav-bar {
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-badge {
      background: var(--accent);
      color: #fff;
      font-size: 0.6875rem;
      padding: 2px 6px;
      border-radius: 4px;
      font-weight: 600;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-menu a {
      font-size: 0.9375rem;
      color: var(--text-main);
      font-weight: 500;
      padding: 8px 0;
      position: relative;
    }
    .nav-menu a:hover, .nav-menu a.active {
      color: var(--accent);
    }
    .nav-menu a.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent);
      border-radius: 2px;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-size: 0.9375rem;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      white-space: nowrap;
    }
    .btn-primary {
      background: var(--accent);
      color: #ffffff;
      box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
    }
    .btn-primary:hover {
      background: var(--accent-hover);
      transform: translateY(-2px);
      box-shadow: 0 4px 14px rgba(37, 99, 235, 0.35);
    }
    .btn-outline {
      background: #ffffff;
      border-color: var(--border-color);
      color: var(--primary);
    }
    .btn-outline:hover {
      background: #f1f5f9;
      border-color: #cbd5e1;
      transform: translateY(-2px);
    }
    .btn-dark {
      background: var(--primary);
      color: #ffffff;
    }
    .btn-dark:hover {
      background: #0f172a;
      transform: translateY(-2px);
    }
    .mobile-toggle {
      display: none;
      background: transparent;
      border: none;
      cursor: pointer;
      padding: 6px;
      color: var(--primary);
    }
    /* 公共板块结构 */
    .section {
      padding: 88px 0;
      position: relative;
    }
    .section-dark {
      background: var(--bg-dark);
      color: var(--text-light);
    }
    .section-darker {
      background: var(--bg-darker);
      color: var(--text-light);
    }
    .section-white {
      background: #ffffff;
    }
    .section-header {
      margin-bottom: 56px;
      max-width: 860px;
    }
    .section-header.text-center {
      margin-left: auto;
      margin-right: auto;
      text-align: center;
    }
    .tag-pill {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      padding: 4px 12px;
      border-radius: 9999px;
      background: rgba(37, 99, 235, 0.1);
      color: var(--accent);
      margin-bottom: 12px;
    }
    .section-dark .tag-pill {
      background: rgba(255, 255, 255, 0.1);
      color: #60a5fa;
    }
    .section-title {
      font-size: 2.125rem;
      font-weight: 700;
      line-height: 1.3;
      color: var(--primary);
      letter-spacing: -0.5px;
      margin-bottom: 16px;
    }
    .section-dark .section-title {
      color: #ffffff;
    }
    .section-desc {
      font-size: 1.0625rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .section-dark .section-desc {
      color: #94a3b8;
    }
    /* 板块 1: Hero 首屏 */
    .hero-section {
      position: relative;
      background: #090d16 url('/assets/images/e9d8a6ca075f2779.webp') center/cover no-repeat;
      color: #ffffff;
      padding: 110px 0 100px;
      overflow: hidden;
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(9, 13, 22, 0.94) 0%, rgba(15, 23, 42, 0.88) 100%);
      backdrop-filter: blur(2px);
    }
    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 960px;
    }
    .group-alert {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: rgba(37, 99, 235, 0.16);
      border: 1px solid rgba(59, 130, 246, 0.4);
      padding: 8px 16px;
      border-radius: 9999px;
      font-size: 0.875rem;
      margin-bottom: 24px;
      color: #93c5fd;
    }
    .hero-title {
      font-size: 3rem;
      line-height: 1.2;
      font-weight: 800;
      letter-spacing: -1px;
      margin-bottom: 20px;
      color: #ffffff;
    }
    .hero-p {
      font-size: 1.125rem;
      line-height: 1.8;
      color: #cbd5e1;
      margin-bottom: 36px;
      max-width: 860px;
    }
    .hero-action-box {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 44px;
    }
    .hero-metrics-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid var(--border-dark);
      padding: 24px;
      border-radius: var(--radius-md);
      backdrop-filter: blur(8px);
    }
    .metric-item .val {
      font-size: 1.75rem;
      font-weight: 700;
      color: #60a5fa;
      font-family: monospace, sans-serif;
    }
    .metric-item .lbl {
      font-size: 0.8125rem;
      color: #94a3b8;
      margin-top: 4px;
    }
    /* 板块 2: 卖点三连 */
    .triad-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .triad-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 36px 30px;
      transition: var(--transition);
      position: relative;
    }
    .triad-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #cbd5e1;
    }
    .triad-icon {
      width: 48px;
      height: 48px;
      background: #eff6ff;
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--accent);
      font-size: 1.25rem;
      font-weight: 700;
    }
    .triad-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .triad-text {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.65;
    }
    /* 板块 3: 入口矩阵 (3 大卡) */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .matrix-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .matrix-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .matrix-card-media {
      height: 200px;
      position: relative;
      overflow: hidden;
    }
    .matrix-card-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .matrix-card:hover .matrix-card-media img {
      transform: scale(1.05);
    }
    .matrix-card-body {
      padding: 28px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .matrix-card-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .matrix-card-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.6;
    }
    .matrix-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: auto;
      margin-bottom: 24px;
    }
    .spec-chip {
      background: #f1f5f9;
      color: var(--primary);
      font-size: 0.75rem;
      padding: 4px 10px;
      border-radius: 4px;
      font-weight: 500;
    }
    /* 板块 4: 最新发布 / 产品架构拆解 */
    .arch-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .arch-preview {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }
    .arch-info h3 {
      font-size: 1.5rem;
      color: var(--primary);
      font-weight: 700;
      margin-bottom: 16px;
    }
    .arch-info p {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .param-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .param-box {
      border: 1px solid var(--border-color);
      padding: 16px;
      border-radius: var(--radius-sm);
      background: #f8fafc;
    }
    .param-box strong {
      display: block;
      color: var(--primary);
      font-size: 0.9375rem;
      margin-bottom: 4px;
    }
    .param-box span {
      font-size: 0.8125rem;
      color: var(--text-muted);
    }
    /* 板块 5: 热门专题 (六宫格能力矩阵) */
    .hex-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .hex-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: var(--transition);
    }
    .hex-card:hover {
      border-color: #cbd5e1;
      transform: translateY(-3px);
      box-shadow: var(--shadow-sm);
    }
    .hex-badge {
      font-size: 0.6875rem;
      font-weight: 700;
      color: var(--accent);
      background: #eff6ff;
      display: inline-block;
      padding: 2px 8px;
      border-radius: 4px;
      margin-bottom: 12px;
    }
    .hex-title {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .hex-p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    /* 板块 6: 技术结果对比看板 */
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      margin-top: 24px;
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      overflow: hidden;
      font-size: 0.9375rem;
    }
    .compare-table th, .compare-table td {
      padding: 18px 24px;
      text-align: left;
      border-bottom: 1px solid var(--border-dark);
    }
    .compare-table th {
      background: rgba(255, 255, 255, 0.05);
      color: #e2e8f0;
      font-weight: 600;
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .compare-table td.dim {
      color: #64748b;
    }
    .compare-table td.highlight {
      color: #60a5fa;
      font-weight: 600;
      background: rgba(37, 99, 235, 0.06);
    }
    /* 板块 7: 资讯与技术公告 */
    .news-list {
      display: grid;
      grid-template-columns: 1fr;
      gap: 16px;
    }
    .news-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 20px 24px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      transition: var(--transition);
    }
    .news-item:hover {
      border-color: #94a3b8;
      box-shadow: var(--shadow-sm);
    }
    .news-meta {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .news-date {
      font-size: 0.8125rem;
      font-weight: 600;
      color: var(--accent);
      background: #f1f5f9;
      padding: 4px 10px;
      border-radius: 4px;
      font-family: monospace;
    }
    .news-title {
      font-size: 1rem;
      font-weight: 600;
      color: var(--primary);
    }
    .news-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-top: 4px;
    }
    /* 板块 8: 数据指标高光带 */
    .stats-band {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }
    .stat-box .count {
      font-size: 3rem;
      font-weight: 800;
      letter-spacing: -1px;
      color: #ffffff;
      font-family: monospace, sans-serif;
      line-height: 1;
      margin-bottom: 10px;
    }
    .stat-box .label {
      font-size: 0.9375rem;
      color: #94a3b8;
    }
    /* 板块 9: 落地案例深度故事 */
    .case-story-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
    }
    .case-story-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-story-text {
      padding: 48px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .case-meta {
      font-size: 0.8125rem;
      color: var(--accent);
      font-weight: 600;
      margin-bottom: 8px;
    }
    .case-title {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 16px;
    }
    .case-desc {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    /* 板块 10: 里程碑时间线 */
    .timeline-wrap {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .timeline-node {
      position: relative;
      padding: 24px 20px;
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-sm);
    }
    .node-year {
      font-size: 1.25rem;
      font-weight: 700;
      color: #60a5fa;
      margin-bottom: 8px;
      font-family: monospace;
    }
    .node-title {
      font-size: 0.9375rem;
      font-weight: 600;
      color: #ffffff;
      margin-bottom: 6px;
    }
    .node-p {
      font-size: 0.8125rem;
      color: #94a3b8;
      line-height: 1.5;
    }
    /* 板块 11: 用户口碑与评价 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-body {
      font-size: 0.9375rem;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 20px;
      font-style: italic;
    }
    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 16px;
    }
    .reviewer-info h4 {
      font-size: 0.875rem;
      font-weight: 700;
      color: var(--primary);
    }
    .reviewer-info span {
      font-size: 0.75rem;
      color: var(--text-muted);
    }
    /* 板块 12: 平台合规与安全保障 */
    .security-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .sec-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      text-align: center;
    }
    .sec-icon {
      font-size: 1.5rem;
      color: var(--accent);
      margin-bottom: 12px;
    }
    .sec-title {
      font-size: 1rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .sec-desc {
      font-size: 0.8125rem;
      color: var(--text-muted);
      line-height: 1.5;
    }
    /* 板块 13: 常见疑问解答 (FAQ) */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      background: #ffffff;
      margin-bottom: 14px;
      overflow: hidden;
    }
    .faq-header {
      padding: 20px 24px;
      font-size: 1rem;
      font-weight: 600;
      color: var(--primary);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-header::after {
      content: "+";
      font-size: 1.25rem;
      color: var(--text-muted);
      transition: transform 0.2s ease;
    }
    .faq-item.active .faq-header::after {
      content: "-";
      color: var(--accent);
    }
    .faq-body {
      padding: 0 24px 20px;
      display: none;
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px solid #f8fafc;
    }
    .faq-item.active .faq-body {
      display: block;
    }
    /* 预约与转化收口表单 */
    .cta-container {
      background: #020617;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-dark);
      padding: 60px 48px;
      color: #ffffff;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .cta-info h3 {
      font-size: 2rem;
      font-weight: 700;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .cta-info p {
      font-size: 0.9375rem;
      color: #94a3b8;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .cta-form {
      display: flex;
      flex-direction: column;
      gap: 16px;
      background: rgba(255, 255, 255, 0.03);
      padding: 32px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-dark);
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group label {
      font-size: 0.8125rem;
      color: #cbd5e1;
      font-weight: 500;
    }
    .form-control {
      background: rgba(15, 23, 42, 0.8);
      border: 1px solid rgba(255, 255, 255, 0.15);
      padding: 10px 14px;
      border-radius: var(--radius-sm);
      color: #ffffff;
      font-size: 0.875rem;
      transition: var(--transition);
    }
    .form-control:focus {
      outline: none;
      border-color: var(--accent);
      box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
    }
    /* 页脚 */
    .site-footer {
      background: var(--bg-darker);
      color: #94a3b8;
      font-size: 0.875rem;
      padding-top: 64px;
      border-top: 1px solid var(--border-dark);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 48px;
      margin-bottom: 48px;
    }
    .footer-col h4 {
      color: #ffffff;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: #ffffff;
    }
    .footer-bottom {
      border-top: 1px solid var(--border-dark);
      padding: 24px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.8125rem;
    }
    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-metrics-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .hex-grid, .triad-grid, .matrix-grid, .review-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .security-grid, .timeline-wrap, .stats-band {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .nav-menu, .nav-actions .btn {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .hero-title {
        font-size: 2.25rem;
      }
      .arch-wrapper, .case-story-grid, .cta-container {
        grid-template-columns: 1fr;
      }
      .hex-grid, .triad-grid, .matrix-grid, .review-grid, .security-grid, .timeline-wrap, .stats-band {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .section {
        padding: 56px 0;
      }
    }