/* roulang page: index */
:root {
      --primary: #00C06D;
      --primary-hover: #00a85f;
      --secondary: #0A84FF;
      --bg-page: #F4F6F9;
      --bg-dark: #0D1117;
      --bg-card: #FFFFFF;
      --text-heading: #121826;
      --text-body: #4B5565;
      --text-muted: #9AA4B2;
      --border-color: #E3E8EF;
      --radius-sm: 4px;
      --radius-md: 6px;
      --radius-lg: 12px;
      --shadow-sm: 0 4px 20px -2px rgba(16, 24, 40, 0.06);
      --shadow-hover: 0 12px 32px -4px rgba(16, 24, 40, 0.12);
      --max-width: 1240px;
    }

    * {
      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;
      line-height: 1.6;
      background-color: var(--bg-page);
      color: var(--text-body);
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }

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

    .container {
      width: 100%;
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部信号栏 */
    .top-bar {
      height: 38px;
      background-color: var(--bg-dark);
      color: #9AA4B2;
      font-size: 12px;
      display: flex;
      align-items: center;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .status-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      background-color: var(--primary);
      border-radius: 50%;
      margin-right: 6px;
      box-shadow: 0 0 6px var(--primary);
    }
    .top-links a {
      color: #9AA4B2;
      margin-left: 18px;
    }
    .top-links a:hover {
      color: #FFFFFF;
    }

    /* 主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(8px);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
      border-bottom: 1px solid var(--border-color);
    }
    .nav-inner {
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 800;
      color: var(--text-heading);
      letter-spacing: -0.5px;
    }
    .brand-icon {
      width: 32px;
      height: 32px;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 900;
      font-size: 16px;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 32px;
    }
    .nav-item a {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-body);
      position: relative;
      padding: 6px 0;
    }
    .nav-item a:hover {
      color: var(--primary);
    }
    .nav-item a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 50%;
      width: 0;
      height: 2px;
      background-color: var(--primary);
      transition: all 0.25s ease;
      transform: translateX(-50%);
    }
    .nav-item a:hover::after {
      width: 100%;
    }
    .btn-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 40px;
      padding: 0 20px;
      background-color: var(--primary);
      color: #FFFFFF;
      font-size: 14px;
      font-weight: 600;
      border-radius: var(--radius-md);
      transition: all 0.2s ease;
      cursor: pointer;
      border: none;
    }
    .btn-cta:hover {
      background-color: var(--primary-hover);
      box-shadow: 0 4px 12px rgba(0, 192, 109, 0.3);
      transform: translateY(-1px);
    }

    /* 板块通用规范 */
    .section-block {
      padding: 85px 0;
      position: relative;
    }
    .section-block.bg-light {
      background-color: #FFFFFF;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-block.bg-dark {
      background-color: var(--bg-dark);
      color: #FFFFFF;
    }
    .section-head {
      margin-bottom: 48px;
    }
    .section-head.text-center {
      text-align: center;
    }
    .section-badge {
      display: inline-block;
      padding: 4px 12px;
      font-size: 12px;
      font-weight: 700;
      color: var(--primary);
      background: rgba(0, 192, 109, 0.1);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }
    .section-head h2 {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-heading);
      line-height: 1.3;
      margin-bottom: 14px;
    }
    .section-block.bg-dark .section-head h2 {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-body);
      max-width: 780px;
      line-height: 1.65;
    }
    .section-head.text-center .section-desc {
      margin: 0 auto;
    }
    .section-block.bg-dark .section-desc {
      color: var(--text-muted);
    }

    /* 板块一：无大图 Hero 图标矩阵与状态条 */
    .hero-section {
      background: radial-gradient(circle at 80% 20%, #1e2633 0%, var(--bg-dark) 100%);
      color: #FFFFFF;
      padding: 70px 0 80px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .hero-strip {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: rgba(255, 255, 255, 0.06);
      padding: 6px 14px;
      border-radius: 20px;
      border: 1px solid rgba(255, 255, 255, 0.12);
      font-size: 13px;
      color: #D1D5DB;
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 42px;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-title span {
      color: var(--primary);
    }
    .hero-intro {
      font-size: 17px;
      color: #9AA4B2;
      max-width: 860px;
      line-height: 1.7;
      margin-bottom: 40px;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .hero-metric-card {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-lg);
      padding: 24px;
      display: flex;
      flex-direction: column;
      gap: 8px;
      transition: all 0.3s ease;
    }
    .hero-metric-card:hover {
      background: rgba(255, 255, 255, 0.06);
      border-color: var(--primary);
      transform: translateY(-3px);
    }
    .hero-metric-icon {
      font-size: 24px;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .hero-metric-val {
      font-size: 26px;
      font-weight: 800;
      color: #FFFFFF;
    }
    .hero-metric-label {
      font-size: 13px;
      color: #9AA4B2;
      line-height: 1.5;
    }

    /* 板块二：安全主张 */
    .grid-three {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .card-security {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .card-security:hover {
      box-shadow: var(--shadow-hover);
      border-color: var(--primary);
      transform: translateY(-4px);
    }
    .card-security h3 {
      font-size: 19px;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 12px;
    }
    .card-security p {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.6;
    }

    /* 板块三：检查项 */
    .checklist-wrapper {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }
    .check-item {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      background: #FFFFFF;
      padding: 22px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
    }
    .check-icon {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: rgba(0, 192, 109, 0.15);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      flex-shrink: 0;
      margin-top: 2px;
    }
    .check-content h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 6px;
    }
    .check-content p {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.5;
    }

    /* 板块四：合规徽章 */
    .badges-flex {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
    }
    .badge-card {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-md);
      padding: 20px 24px;
      width: calc(25% - 20px);
      text-align: center;
      color: #FFFFFF;
      transition: all 0.3s;
    }
    .badge-card:hover {
      border-color: var(--secondary);
      background: rgba(255, 255, 255, 0.08);
    }
    .badge-card h4 {
      font-size: 16px;
      margin-bottom: 6px;
      color: #FFFFFF;
    }
    .badge-card p {
      font-size: 12px;
      color: #9AA4B2;
      line-height: 1.5;
    }

    /* 板块五：边界说明 */
    .boundary-box {
      background: #FFFFFF;
      border-left: 4px solid var(--secondary);
      border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }
    .boundary-box h3 {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 12px;
    }
    .boundary-box p {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 12px;
    }

    /* 板块六：对比选型表 */
    .table-responsive {
      overflow-x: auto;
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }
    .comparison-table th, .comparison-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }
    .comparison-table th {
      background-color: #F8FAFC;
      color: var(--text-heading);
      font-weight: 700;
    }
    .comparison-table .highlight-col {
      background-color: rgba(0, 192, 109, 0.04);
      color: var(--text-heading);
      font-weight: 600;
      border-left: 2px solid var(--primary);
      border-right: 2px solid var(--primary);
    }
    .comparison-table tr:last-child td {
      border-bottom: none;
    }

    /* 板块七：资讯与算法动态 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .news-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .news-card img {
      width: 100%;
      height: 160px;
      object-fit: cover;
    }
    .news-body {
      padding: 18px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .news-tag {
      font-size: 11px;
      color: var(--secondary);
      font-weight: 700;
      text-transform: uppercase;
      margin-bottom: 8px;
    }
    .news-body h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-heading);
      line-height: 1.4;
      margin-bottom: 8px;
    }
    .news-body p {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.5;
    }

    /* 板块八：工具演示台 */
    .demo-console {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      background: var(--bg-dark);
      border-radius: var(--radius-lg);
      padding: 36px;
      color: #FFFFFF;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    .demo-step-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .demo-step {
      padding-left: 18px;
      border-left: 2px solid var(--primary);
    }
    .demo-step h4 {
      font-size: 16px;
      color: #FFFFFF;
      margin-bottom: 6px;
    }
    .demo-step p {
      font-size: 13px;
      color: #9AA4B2;
      line-height: 1.5;
    }
    .console-screen {
      background: #000000;
      border-radius: var(--radius-md);
      padding: 20px;
      font-family: monospace;
      font-size: 13px;
      color: var(--primary);
      border: 1px solid rgba(255, 255, 255, 0.15);
      overflow-y: auto;
      max-height: 280px;
    }

    /* 板块九：议程时间线 */
    .timeline-container {
      position: relative;
      padding-left: 30px;
      border-left: 2px solid var(--border-color);
      display: flex;
      flex-direction: column;
      gap: 32px;
    }
    .timeline-node {
      position: relative;
    }
    .timeline-node::before {
      content: '';
      position: absolute;
      left: -37px;
      top: 4px;
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: var(--primary);
      border: 3px solid #FFFFFF;
      box-shadow: 0 0 0 2px var(--primary);
    }
    .timeline-time {
      font-size: 13px;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 4px;
    }
    .timeline-node h4 {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-heading);
      margin-bottom: 6px;
    }
    .timeline-node p {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.6;
    }

    /* 板块十：热门专题索引 */
    .topics-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }
    .topic-chip {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 10px 20px;
      border-radius: 30px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-heading);
      transition: all 0.2s ease;
    }
    .topic-chip:hover {
      background: var(--primary);
      color: #FFFFFF;
      border-color: var(--primary);
    }

    /* 板块十一：信任背书与合作伙伴 */
    .partners-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 16px;
    }
    .partner-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 16px;
      text-align: center;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-muted);
      filter: grayscale(100%);
      transition: all 0.3s;
    }
    .partner-item:hover {
      filter: grayscale(0%);
      color: var(--primary);
      border-color: var(--primary);
    }

    /* 板块十二：FAQ 手风琴 */
    .faq-list {
      max-width: 800px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
    }
    .faq-card summary {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-heading);
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-card summary::-webkit-details-marker {
      display: none;
    }
    .faq-card summary::after {
      content: '+';
      font-size: 20px;
      color: var(--primary);
      font-weight: 700;
    }
    .faq-card[open] summary::after {
      content: '−';
    }
    .faq-card-body {
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.6;
      border-top: 1px solid #F1F5F9;
      padding-top: 14px;
    }

    /* 板块十三：全局行动转化 */
    .action-cta-wrap {
      background: linear-gradient(135deg, #00C06D 0%, #008f51 100%);
      border-radius: var(--radius-lg);
      padding: 50px 40px;
      color: #FFFFFF;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 30px;
    }
    .cta-text h3 {
      font-size: 28px;
      font-weight: 800;
      margin-bottom: 10px;
    }
    .cta-text p {
      font-size: 15px;
      opacity: 0.9;
      max-width: 580px;
    }
    .cta-form {
      display: flex;
      gap: 12px;
      flex-shrink: 0;
    }
    .cta-input {
      height: 46px;
      padding: 0 16px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.3);
      font-size: 14px;
      min-width: 260px;
      outline: none;
    }
    .cta-input:focus {
      border-color: #FFFFFF;
    }
    .btn-white {
      height: 46px;
      padding: 0 24px;
      background: #FFFFFF;
      color: var(--primary);
      font-weight: 700;
      border: none;
      border-radius: var(--radius-md);
      cursor: pointer;
      transition: all 0.2s;
    }
    .btn-white:hover {
      background: #F4F6F9;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    }

    /* 页脚系统 */
    .site-footer {
      background-color: var(--bg-dark);
      color: #9AA4B2;
      padding: 70px 0 24px;
      font-size: 14px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-col h5 {
      color: #FFFFFF;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .footer-col p {
      line-height: 1.6;
      margin-bottom: 14px;
      font-size: 13px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a {
      color: #9AA4B2;
    }
    .footer-links a:hover {
      color: var(--primary);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      text-align: center;
      font-size: 12px;
      color: #64748B;
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-grid { grid-template-columns: repeat(2, 1fr); }
      .grid-three { grid-template-columns: 1fr; }
      .badges-flex .badge-card { width: calc(50% - 20px); }
      .news-grid { grid-template-columns: repeat(2, 1fr); }
      .demo-console { grid-template-columns: 1fr; }
      .partners-grid { grid-template-columns: repeat(3, 1fr); }
      .action-cta-wrap { flex-direction: column; align-items: flex-start; }
      .cta-form { width: 100%; }
      .cta-input { flex-grow: 1; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .nav-menu { display: none; }
    }

    @media (max-width: 768px) {
      .checklist-wrapper { grid-template-columns: 1fr; }
      .news-grid { grid-template-columns: 1fr; }
      .partners-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr; }
      .hero-title { font-size: 30px; }
      .section-head h2 { font-size: 24px; }
      .section-block { padding: 50px 0; }
    }

    @media (max-width: 480px) {
      .hero-grid { grid-template-columns: 1fr; }
      .badges-flex .badge-card { width: 100%; }
      .cta-form { flex-direction: column; }
      .top-links { display: none; }
    }