/* roulang page: index */
:root {
      --primary: #1856C7;
      --primary-hover: #1243A1;
      --accent: #00A389;
      --accent-hover: #008771;
      --dark-bg: #0B132B;
      --bg: #F8FAFC;
      --surface: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-light: #94A3B8;
      --border-color: #E2E8F0;
      --shadow-sm: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
      --shadow-hover: 0 20px 25px -5px rgba(24, 86, 199, 0.1), 0 8px 10px -6px rgba(24, 86, 199, 0.08);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; transition: all 0.25s ease; }
    img { max-width: 100%; height: auto; display: block; }
    ul { list-style: none; }

    /* 全局工具条与导航 */
    .top-sub-bar {
      background: #0f1c3f;
      color: #cbd5e1;
      font-size: 13px;
      padding: 6px 0;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .top-sub-bar .grid-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .badge-pill-notice {
      background: rgba(0, 163, 137, 0.2);
      color: #38ef7d;
      padding: 2px 8px;
      border-radius: 12px;
      font-size: 11px;
      margin-right: 8px;
      display: inline-block;
    }

    .main-header {
      background: #ffffff;
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
      border-bottom: 1px solid var(--border-color);
    }
    .main-nav-wrapper {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 20px;
      font-weight: 700;
      color: var(--primary);
    }
    .brand-logo-icon {
      width: 36px;
      height: 36px;
      background: var(--primary);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 18px;
      font-weight: bold;
    }
    .nav-links {
      display: flex;
      gap: 28px;
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--primary);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .search-mock {
      display: flex;
      align-items: center;
      background: #F1F5F9;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 6px 12px;
      font-size: 13px;
      color: var(--text-light);
      cursor: pointer;
    }
    .kbd-shortcut {
      background: #ffffff;
      border: 1px solid #cbd5e1;
      padding: 1px 6px;
      border-radius: 4px;
      font-size: 11px;
      margin-left: 12px;
      color: var(--text-muted);
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      font-size: 14px;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      transition: all 0.25s ease;
      cursor: pointer;
      border: none;
    }
    .btn-primary {
      background: var(--primary);
      color: #fff;
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      color: #fff;
      box-shadow: 0 4px 12px rgba(24, 86, 199, 0.25);
    }
    .btn-accent {
      background: var(--accent);
      color: #fff;
    }
    .btn-accent:hover {
      background: var(--accent-hover);
      color: #fff;
      box-shadow: 0 4px 12px rgba(0, 163, 137, 0.25);
    }
    .btn-outline {
      background: transparent;
      border: 1px solid var(--border-color);
      color: var(--text-main);
    }
    .btn-outline:hover {
      background: #F1F5F9;
      border-color: #cbd5e1;
    }

    /* 板块通用 */
    section {
      padding: 85px 0;
      position: relative;
    }
    .section-dark {
      background-color: var(--dark-bg);
      color: #F8FAFC;
    }
    .section-light {
      background-color: var(--bg);
    }
    .section-white {
      background-color: #ffffff;
    }
    .section-header {
      margin-bottom: 50px;
      text-align: center;
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      background: rgba(24, 86, 199, 0.08);
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 12px;
    }
    .section-dark .section-tag {
      color: #38ef7d;
      background: rgba(56, 239, 125, 0.1);
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .section-dark .section-title {
      color: #ffffff;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 780px;
      margin: 0 auto;
      line-height: 1.7;
    }
    .section-dark .section-desc {
      color: #94A3B8;
    }

    /* 卡片系统 */
    .card-box {
      background: var(--surface);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      padding: 28px;
      transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .card-box:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(24, 86, 199, 0.3);
    }

    /* 板块 1: Hero */
    .hero-section {
      background: linear-gradient(135deg, rgba(11, 19, 43, 0.95), rgba(24, 86, 199, 0.9)), url('/assets/images/6045fdd2e67dad47.jpg') center/cover no-repeat;
      color: #fff;
      padding: 95px 0 110px 0;
    }
    .hero-content {
      max-width: 900px;
      margin: 0 auto;
      text-align: center;
    }
    .hero-h1 {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 22px;
      letter-spacing: -1px;
    }
    .hero-p {
      font-size: 17px;
      line-height: 1.8;
      color: #E2E8F0;
      margin-bottom: 35px;
    }
    .hero-cta-group {
      display: flex;
      justify-content: center;
      gap: 18px;
      margin-bottom: 45px;
    }
    .hero-metrics-strip {
      display: flex;
      justify-content: center;
      gap: 40px;
      border-top: 1px solid rgba(255, 255, 255, 0.15);
      padding-top: 30px;
    }
    .hero-metric-item {
      text-align: left;
    }
    .hero-metric-item span {
      display: block;
      font-size: 13px;
      color: #94A3B8;
    }
    .hero-metric-item strong {
      font-size: 18px;
      color: #38ef7d;
      font-weight: 700;
    }

    /* 板块 2: KPI看板条 */
    .kpi-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .kpi-card {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      text-align: center;
      box-shadow: var(--shadow-sm);
    }
    .kpi-num {
      font-size: 36px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
      font-feature-settings: "tnum";
    }
    .kpi-label {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .kpi-desc {
      font-size: 12px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 板块 3: 技术架构底座 */
    .arch-panel {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .arch-img-wrap {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 0 16px 32px rgba(15, 23, 42, 0.1);
      border: 1px solid var(--border-color);
    }
    .arch-features-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-top: 24px;
    }
    .arch-feat-item {
      display: flex;
      gap: 14px;
    }
    .arch-feat-icon {
      flex-shrink: 0;
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: rgba(24, 86, 199, 0.1);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 13px;
    }

    /* 板块 4: 服务矩阵 */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .matrix-icon {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: #EFF6FF;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 18px;
      font-weight: bold;
    }
    .matrix-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .matrix-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 5: 3大产品版本对比体系 */
    .tiers-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      align-items: stretch;
    }
    .tier-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      display: flex;
      flex-direction: column;
      position: relative;
    }
    .tier-card.featured {
      border: 2px solid var(--primary);
      box-shadow: 0 12px 30px rgba(24, 86, 199, 0.15);
      transform: scale(1.02);
    }
    .tier-badge {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--primary);
      color: #fff;
      font-size: 12px;
      font-weight: 700;
      padding: 3px 12px;
      border-radius: 12px;
    }
    .tier-title {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .tier-subtitle {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 24px;
    }
    .tier-feature-list {
      flex: 1;
      margin-bottom: 28px;
    }
    .tier-feature-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .tier-feature-item span {
      color: var(--accent);
      font-weight: bold;
    }

    /* 板块 6: 战术理念与大屏演练 */
    .dark-showcase-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }
    .dark-showcase-img {
      border-radius: var(--radius-lg);
      border: 1px solid rgba(255, 255, 255, 0.15);
      overflow: hidden;
    }
    .dark-item-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .dark-item {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      padding: 18px 22px;
      border-radius: var(--radius-md);
    }
    .dark-item h4 {
      font-size: 16px;
      color: #ffffff;
      margin-bottom: 6px;
      font-weight: 600;
    }
    .dark-item p {
      font-size: 13px;
      color: #94A3B8;
      line-height: 1.6;
      margin: 0;
    }

    /* 板块 7: 行业故事交替流 */
    .story-item {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
      margin-bottom: 60px;
    }
    .story-item:last-child {
      margin-bottom: 0;
    }
    .story-item.reverse {
      direction: rtl;
    }
    .story-item.reverse .story-text {
      direction: ltr;
    }
    .story-img {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
    }
    .story-tag {
      font-size: 13px;
      font-weight: 600;
      color: var(--accent);
      margin-bottom: 8px;
    }
    .story-title {
      font-size: 24px;
      font-weight: 700;
      margin-bottom: 14px;
    }
    .story-desc {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 18px;
    }

    /* 板块 8: 横向对比表格 */
    .compare-table-wrapper {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }
    .compare-table th {
      background: #F8FAFC;
      font-weight: 700;
      color: var(--text-main);
    }
    .compare-table .highlight-col {
      background: #F0F7FF;
      color: var(--primary);
      font-weight: 600;
    }

    /* 板块 9: 真实客户专家证言 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-quote {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .review-avatar-text {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }
    .review-meta h5 {
      font-size: 14px;
      font-weight: 700;
      margin: 0;
    }
    .review-meta span {
      font-size: 12px;
      color: var(--text-light);
    }

    /* 板块 10: 资讯与模型前瞻 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .news-img {
      height: 180px;
      overflow: hidden;
    }
    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }
    .news-card:hover .news-img img {
      transform: scale(1.04);
    }
    .news-body {
      padding: 22px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .news-meta {
      display: flex;
      justify-content: space-between;
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 16px;
      font-weight: 700;
      line-height: 1.4;
      margin-bottom: 10px;
    }
    .news-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 14px;
      flex: 1;
    }

    /* 板块 11: 权威认证与安全合规 */
    .security-block {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .badge-wall {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }
    .badge-card {
      background: #F8FAFC;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 16px;
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .badge-icon {
      font-size: 20px;
      color: var(--primary);
      font-weight: bold;
    }
    .badge-text strong {
      display: block;
      font-size: 14px;
      color: var(--text-main);
    }
    .badge-text span {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块 12: 常见疑难解答 FAQ */
    .faq-container {
      max-width: 800px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
    }
    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #ffffff;
      transition: background 0.2s;
    }
    .faq-question:hover {
      background: #F8FAFC;
    }
    .faq-answer {
      padding: 0 24px 18px 24px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 13: 平台保障与线索行动区 */
    .cta-container {
      background: linear-gradient(135deg, #0B132B, #1856C7);
      border-radius: var(--radius-lg);
      padding: 50px 40px;
      color: #ffffff;
      box-shadow: var(--shadow-hover);
    }
    .guarantee-badges {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.15);
      padding-bottom: 35px;
      margin-bottom: 35px;
    }
    .guarantee-item {
      text-align: center;
    }
    .guarantee-item strong {
      display: block;
      font-size: 15px;
      margin-top: 6px;
      color: #ffffff;
    }
    .guarantee-item span {
      font-size: 12px;
      color: #94A3B8;
    }
    .cta-form-wrapper {
      max-width: 600px;
      margin: 0 auto;
      text-align: center;
    }
    .cta-form {
      display: flex;
      gap: 12px;
      margin-top: 20px;
    }
    .cta-form input {
      flex: 1;
      height: 48px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.3);
      padding: 0 16px;
      background: rgba(255, 255, 255, 0.1);
      color: #ffffff;
      font-size: 14px;
      outline: none;
    }
    .cta-form input::placeholder {
      color: #cbd5e1;
    }
    .cta-form input:focus {
      border-color: #ffffff;
      background: rgba(255, 255, 255, 0.2);
    }

    /* 页脚 */
    .site-footer {
      background: #080D1E;
      color: #94A3B8;
      padding: 70px 0 30px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 13px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand h4 {
      color: #ffffff;
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 14px;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .footer-links h5 {
      color: #ffffff;
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 16px;
    }
    .footer-links ul li {
      margin-bottom: 10px;
    }
    .footer-links ul li a:hover {
      color: #ffffff;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
    }

    /* 底部吸底转化条 */
    .sticky-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: rgba(11, 19, 43, 0.96);
      backdrop-filter: blur(8px);
      color: #fff;
      padding: 12px 0;
      z-index: 999;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: 0 -4px 16px rgba(0,0,0,0.2);
    }
    .sticky-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .sticky-text {
      font-size: 14px;
      font-weight: 500;
    }
    .sticky-actions {
      display: flex;
      gap: 14px;
      align-items: center;
    }

    /* 响应式媒体查询 */
    @media (max-width: 1024px) {
      .matrix-grid, .tiers-grid, .review-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .kpi-row, .guarantee-badges {
        grid-template-columns: repeat(2, 1fr);
      }
      .arch-panel, .dark-showcase-grid, .security-block {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-sub-bar { display: none; }
      .nav-links, .search-mock { display: none; }
      .hero-h1 { font-size: 28px; }
      .hero-metrics-strip { flex-direction: column; gap: 16px; align-items: center; }
      .matrix-grid, .tiers-grid, .review-grid, .news-grid, .kpi-row, .guarantee-badges {
        grid-template-columns: 1fr;
      }
      .story-item, .story-item.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
      }
      .cta-form { flex-direction: column; }
      .sticky-inner { flex-direction: column; gap: 8px; text-align: center; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; gap: 10px; }
    }