/* roulang page: index */
:root {
      --bg-dark: #0A0F1D;
      --bg-deep: #060911;
      --bg-card: rgba(16, 24, 44, 0.75);
      --bg-card-hover: rgba(22, 34, 62, 0.9);
      --primary: #00E599;
      --primary-glow: rgba(0, 229, 153, 0.28);
      --accent-blue: #0075FF;
      --text-main: #FFFFFF;
      --text-muted: #C2C8D6;
      --text-dim: #8E9BAE;
      --border-color: rgba(255, 255, 255, 0.09);
      --border-highlight: rgba(0, 229, 153, 0.4);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.35);
      --shadow-hover: 0 10px 32px rgba(0, 229, 153, 0.16);
      --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

    body {
      background-color: var(--bg-dark);
      color: var(--text-muted);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      font-size: 16px;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

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

    h1, h2, h3, h4, h5, h6 {
      color: var(--text-main);
      font-weight: 700;
      line-height: 1.35;
      margin-bottom: 0.85rem;
    }

    p {
      margin-bottom: 1.25rem;
    }

    /* 容器控制 */
    .site-container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部双行导航 */
    .top-utility-bar {
      height: 38px;
      background: rgba(6, 9, 17, 0.95);
      border-bottom: 1px solid var(--border-color);
      font-size: 13px;
      color: var(--text-dim);
      display: flex;
      align-items: center;
    }
    .top-utility-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }
    .utility-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--primary);
    }
    .utility-tag::before {
      content: "";
      display: inline-block;
      width: 6px;
      height: 6px;
      background-color: var(--primary);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--primary);
    }
    .utility-meta {
      display: flex;
      gap: 20px;
    }

    .main-nav-wrapper {
      position: sticky;
      top: 16px;
      z-index: 1000;
      padding: 0 24px;
      margin-bottom: -72px;
    }
    .card-nav-deck {
      max-width: 1280px;
      margin: 0 auto;
      background: rgba(16, 24, 44, 0.8);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: 50px;
      padding: 8px 16px;
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .nav-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      padding-left: 12px;
      font-size: 1.15rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: 0.5px;
    }
    .nav-brand i {
      color: var(--primary);
      font-size: 1.3rem;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
      list-style: none;
      margin: 0;
    }
    .nav-capsule {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 8px 16px;
      border-radius: 30px;
      font-size: 14px;
      color: var(--text-muted);
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid transparent;
      transition: var(--transition);
    }
    .nav-capsule:hover {
      color: var(--text-main);
      background: rgba(255, 255, 255, 0.08);
      border-color: rgba(255, 255, 255, 0.15);
    }
    .nav-capsule i {
      font-size: 13px;
      color: var(--accent-blue);
    }
    .nav-cta-btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--primary);
      color: #060911;
      font-weight: 700;
      font-size: 14px;
      padding: 10px 22px;
      border-radius: 30px;
      box-shadow: 0 0 16px var(--primary-glow);
      transition: var(--transition);
    }
    .nav-cta-btn:hover {
      background: #00ffaa;
      color: #060911;
      box-shadow: 0 0 24px var(--primary);
      transform: translateY(-1px);
    }

    /* 移动端菜单抽屉 */
    .mobile-nav-toggle {
      display: none;
      background: none;
      border: none;
      color: var(--text-main);
      font-size: 20px;
      padding: 8px 12px;
      cursor: pointer;
    }

    /* 通用 Section 样式 */
    section {
      padding: 90px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-deep);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-light-contrast {
      background-color: #F4F6F9;
      color: #1A202C;
      border-top: 1px solid #E2E8F0;
      border-bottom: 1px solid #E2E8F0;
    }
    .section-light-contrast h2,
    .section-light-contrast h3,
    .section-light-contrast h4 {
      color: #0F172A;
    }
    .section-light-contrast p {
      color: #475569;
    }

    .section-header {
      margin-bottom: 50px;
    }
    .section-header.text-center {
      text-align: center;
    }
    .badge-sub {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      padding: 4px 12px;
      border-radius: 20px;
      background: rgba(0, 229, 153, 0.1);
      color: var(--primary);
      border: 1px solid rgba(0, 229, 153, 0.3);
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 2.25rem;
      letter-spacing: -0.5px;
      margin-bottom: 1rem;
    }
    .section-lead {
      max-width: 820px;
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.75;
    }
    .section-header.text-center .section-lead {
      margin-left: auto;
      margin-right: auto;
    }

    /* 卡片基础设计 */
    .ctrl-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      height: 100%;
      box-shadow: var(--shadow-card);
      transition: var(--transition);
      position: relative;
      display: flex;
      flex-direction: column;
    }
    .ctrl-card:hover {
      border-color: var(--border-highlight);
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .card-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: rgba(0, 117, 255, 0.12);
      border: 1px solid rgba(0, 117, 255, 0.3);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 22px;
      margin-bottom: 22px;
    }

    /* 1. Hero 路线图预告与版本节点条 */
    .hero-roadmap-section {
      padding-top: 170px;
      padding-bottom: 90px;
      background: radial-gradient(circle at 50% 20%, rgba(0, 117, 255, 0.15) 0%, rgba(10, 15, 29, 0) 70%), url('/assets/images/32f9db6386728224.png') center/cover no-repeat;
      position: relative;
    }
    .hero-roadmap-section::before {
      content: "";
      position: absolute;
      inset: 0;
      background: rgba(10, 15, 29, 0.88);
      z-index: 1;
    }
    .hero-content {
      position: relative;
      z-index: 2;
    }
    .hero-h1 {
      font-size: 3rem;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 1.5rem;
      color: #FFFFFF;
    }
    .hero-h1 span {
      background: linear-gradient(90deg, #00E599 0%, #0075FF 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.15rem;
      line-height: 1.85;
      color: #E2E8F0;
      max-width: 960px;
      margin-bottom: 2.2rem;
    }
    .hero-roadmap-strip {
      background: rgba(16, 24, 44, 0.85);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      margin-bottom: 2.5rem;
      backdrop-filter: blur(10px);
    }
    .strip-title {
      font-size: 13px;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary);
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .timeline-nodes {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      position: relative;
    }
    .t-node {
      padding: 12px;
      background: rgba(255, 255, 255, 0.03);
      border-left: 3px solid var(--border-color);
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    }
    .t-node.active {
      border-left-color: var(--primary);
      background: rgba(0, 229, 153, 0.05);
    }
    .t-node-version {
      font-size: 12px;
      font-weight: 700;
      color: var(--text-dim);
    }
    .t-node.active .t-node-version {
      color: var(--primary);
    }
    .t-node-desc {
      font-size: 13px;
      color: var(--text-muted);
      margin-top: 4px;
      line-height: 1.4;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      align-items: center;
      flex-wrap: wrap;
    }
    .btn-glow {
      background: var(--primary);
      color: #060911;
      font-weight: 700;
      padding: 14px 32px;
      border-radius: 40px;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      box-shadow: 0 0 20px var(--primary-glow);
    }
    .btn-glow:hover {
      background: #00ffaa;
      color: #060911;
      box-shadow: 0 0 30px var(--primary);
    }
    .btn-ghost {
      border: 1px solid var(--border-color);
      color: var(--text-main);
      padding: 14px 28px;
      border-radius: 40px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.04);
    }
    .btn-ghost:hover {
      border-color: rgba(255, 255, 255, 0.3);
      background: rgba(255, 255, 255, 0.08);
      color: #FFFFFF;
    }

    /* 2. 安全主张区 */
    .security-pillar {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      text-align: left;
    }
    .sec-badge {
      font-size: 12px;
      color: var(--accent-blue);
      font-weight: 700;
      margin-bottom: 8px;
      display: block;
    }

    /* 3. 检查项与算法参数区 */
    .checklist-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .check-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      gap: 16px;
    }
    .check-item i {
      color: var(--primary);
      font-size: 20px;
      margin-top: 3px;
    }

    /* 4. 合规徽章区 */
    .badge-ribbon-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .badge-box {
      background: rgba(255, 255, 255, 0.02);
      border: 1px dashed var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
    }
    .badge-box i {
      font-size: 32px;
      color: var(--accent-blue);
      margin-bottom: 12px;
    }

    /* 5. 边界说明与技术护城河 */
    .boundary-panel {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
    }
    .boundary-metric {
      padding: 36px;
      border-right: 1px solid var(--border-color);
    }

    /* 6. 核心突破卖点三连 */
    .feature-triad-card {
      background: linear-gradient(180deg, rgba(22, 34, 62, 0.6) 0%, rgba(10, 15, 29, 0.8) 100%);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 36px 28px;
      position: relative;
    }
    .feature-triad-card:hover {
      border-color: var(--primary);
    }
    .pill-counter {
      position: absolute;
      top: 24px;
      right: 24px;
      font-size: 14px;
      font-weight: 800;
      color: var(--text-dim);
    }

    /* 7. 热门产品矩阵套件 */
    .product-panel-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      display: flex;
      flex-direction: column;
      overflow: hidden;
    }
    .product-img-box {
      height: 200px;
      overflow: hidden;
      position: relative;
    }
    .product-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      border-radius: 0;
      transition: transform 0.5s ease;
    }
    .product-panel-card:hover .product-img-box img {
      transform: scale(1.05);
    }
    .product-body {
      padding: 28px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .product-specs {
      list-style: none;
      margin: 16px 0 24px 0;
      font-size: 13px;
      color: var(--text-dim);
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
    }
    .product-specs li {
      margin-bottom: 8px;
      display: flex;
      justify-content: space-between;
    }

    /* 8. 实战复盘深色沉浸案例 */
    .case-media-wrapper {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
    }
    .case-data-callout {
      position: absolute;
      bottom: 20px;
      left: 20px;
      right: 20px;
      background: rgba(6, 9, 17, 0.88);
      backdrop-filter: blur(8px);
      padding: 16px 20px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      display: flex;
      justify-content: space-around;
    }
    .callout-stat {
      text-align: center;
    }
    .callout-num {
      font-size: 20px;
      font-weight: 800;
      color: var(--primary);
    }

    /* 9. 运行体量统计横贯条 */
    .metric-strip-box {
      background: linear-gradient(90deg, #0A0F1D 0%, #10182C 50%, #0A0F1D 100%);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 40px 20px;
    }
    .stat-huge {
      font-size: 2.8rem;
      font-weight: 800;
      color: #FFFFFF;
      letter-spacing: -1px;
      margin-bottom: 4px;
    }
    .stat-huge span {
      color: var(--primary);
      font-size: 2rem;
    }

    /* 10. 全景对比矩阵表格 */
    .matrix-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      background: var(--bg-card);
    }
    .matrix-table th,
    .matrix-table td {
      padding: 18px 24px;
      text-align: left;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }
    .matrix-table th {
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-main);
      font-weight: 700;
    }
    .matrix-table tr:last-child td {
      border-bottom: none;
    }
    .matrix-table td.col-highlight {
      background: rgba(0, 229, 153, 0.04);
      color: var(--text-main);
      font-weight: 600;
      border-left: 1px solid rgba(0, 229, 153, 0.2);
      border-right: 1px solid rgba(0, 229, 153, 0.2);
    }

    /* 11. 资讯证据区 */
    .news-article-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .news-date {
      font-size: 13px;
      color: var(--accent-blue);
      margin-bottom: 8px;
      display: inline-block;
    }

    /* 12. 信任背书与评价 */
    .quote-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
    }
    .quote-author {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 20px;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: rgba(0, 117, 255, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-weight: 700;
    }

    /* 13. FAQ 手风琴组件 */
    .accordion-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
    }
    .accordion-title {
      font-size: 1.05rem;
      color: var(--text-main);
      padding: 20px 24px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      transition: var(--transition);
      user-select: none;
    }
    .accordion-title:hover {
      background: rgba(255, 255, 255, 0.03);
    }
    .accordion-title i {
      color: var(--primary);
      transition: transform 0.3s ease;
    }
    .accordion-content {
      padding: 0 24px 22px 24px;
      font-size: 15px;
      line-height: 1.7;
      color: var(--text-muted);
      display: none;
    }
    .accordion-item.is-active .accordion-content {
      display: block;
    }
    .accordion-item.is-active .accordion-title i {
      transform: rotate(180deg);
    }

    /* 底部收口表单 */
    .cta-form-section {
      background: radial-gradient(circle at 50% 50%, rgba(0, 229, 153, 0.08) 0%, rgba(6, 9, 17, 1) 80%);
      border-top: 1px solid var(--border-color);
    }
    .form-panel {
      background: rgba(16, 24, 44, 0.85);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-label {
      display: block;
      font-size: 14px;
      color: var(--text-main);
      margin-bottom: 8px;
      font-weight: 600;
    }
    .form-control {
      width: 100%;
      height: 48px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 0 16px;
      color: #FFFFFF;
      font-size: 14px;
      transition: var(--transition);
    }
    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 12px var(--primary-glow);
      background: rgba(255, 255, 255, 0.08);
    }
    select.form-control option {
      background-color: var(--bg-dark);
      color: #FFFFFF;
    }
    .submit-cta-btn {
      width: 100%;
      height: 52px;
      background: var(--primary);
      color: #060911;
      font-weight: 800;
      font-size: 16px;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      box-shadow: 0 0 20px var(--primary-glow);
    }
    .submit-cta-btn:hover {
      background: #00ffaa;
      box-shadow: 0 0 30px var(--primary);
    }

    /* 移动端底部吸底条 */
    .mobile-sticky-action-bar {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      height: 60px;
      background: rgba(10, 15, 29, 0.95);
      backdrop-filter: blur(10px);
      border-top: 1px solid var(--border-color);
      z-index: 9999;
      padding: 8px 16px;
      align-items: center;
      gap: 12px;
    }
    .mobile-bar-btn {
      flex: 1;
      height: 44px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 700;
    }
    .btn-mobile-call {
      background: rgba(255, 255, 255, 0.1);
      color: #FFFFFF;
      border: 1px solid var(--border-color);
    }
    .btn-mobile-act {
      background: var(--primary);
      color: #060911;
    }

    /* Footer 页脚 */
    .site-footer {
      background: #04060B;
      border-top: 1px solid var(--border-color);
      padding: 70px 0 30px 0;
      font-size: 14px;
    }
    .footer-col-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: 0.5px;
    }
    .footer-links {
      list-style: none;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 12px;
    }
    .footer-links a {
      color: var(--text-dim);
    }
    .footer-links a:hover {
      color: var(--primary);
    }
    .footer-bottom {
      margin-top: 50px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      display: flex;
      justify-content: space-between;
      color: var(--text-dim);
      font-size: 13px;
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .hero-h1 { font-size: 2.4rem; }
      .timeline-nodes { grid-template-columns: repeat(2, 1fr); }
      .checklist-grid { grid-template-columns: repeat(2, 1fr); }
      .badge-ribbon-grid { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 768px) {
      .top-utility-bar { display: none; }
      .main-nav-wrapper { top: 10px; margin-bottom: -60px; padding: 0 12px; }
      .nav-links, .nav-cta-btn { display: none; }
      .mobile-nav-toggle { display: block; }
      .mobile-sticky-action-bar { display: flex; }
      body { padding-bottom: 60px; }
      
      .hero-roadmap-section { padding-top: 120px; padding-bottom: 60px; }
      .hero-h1 { font-size: 1.85rem; }
      .hero-desc { font-size: 1rem; }
      .timeline-nodes { grid-template-columns: 1fr; }
      .checklist-grid { grid-template-columns: 1fr; }
      .badge-ribbon-grid { grid-template-columns: 1fr; }
      .boundary-metric { border-right: none; border-bottom: 1px solid var(--border-color); }
      
      .matrix-table { display: block; overflow-x: auto; white-space: nowrap; }
      .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    }