/* roulang page: index */
:root {
      --primary: #0F1E36;
      --primary-light: #1E293B;
      --accent: #0284C7;
      --accent-hover: #0369A1;
      --success: #059669;
      --bg-main: #F8FAFC;
      --bg-alt: #F1F5F9;
      --bg-white: #FFFFFF;
      --text-main: #334155;
      --text-muted: #64748B;
      --text-dark: #0F172A;
      --border-color: #E2E8F0;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 14px;
      --shadow-sm: 0 1px 3px rgba(15, 30, 54, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(15, 30, 54, 0.08), 0 2px 4px -2px rgba(15, 30, 54, 0.06);
      --shadow-lg: 0 12px 24px -4px rgba(15, 30, 54, 0.1);
      --font-stack: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-stack);
      color: var(--text-main);
      background-color: var(--bg-main);
      line-height: 1.75;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease;
    }

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

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部服务信息条 */
    .top-bar {
      background-color: var(--primary);
      color: #94A3B8;
      font-size: 13px;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-links span {
      margin-left: 20px;
    }

    /* 导航栏 */
    .header-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 18px;
      color: var(--primary);
      letter-spacing: -0.02em;
    }
    .brand-logo-icon {
      width: 34px;
      height: 34px;
      background: linear-gradient(135deg, var(--accent), var(--primary));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 900;
      font-size: 18px;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 28px;
    }
    .nav-menu a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-dark);
    }
    .nav-menu a:hover, .nav-menu a.active {
      color: var(--accent);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    /* 按钮规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.25s ease;
      text-align: center;
      border: 1px solid transparent;
      min-height: 44px;
    }
    .btn-primary {
      background-color: var(--accent);
      color: #FFFFFF;
      box-shadow: 0 2px 4px rgba(2, 132, 199, 0.25);
    }
    .btn-primary:hover {
      background-color: var(--accent-hover);
      transform: translateY(-1px);
    }
    .btn-outline {
      border-color: var(--border-color);
      background-color: #FFFFFF;
      color: var(--text-dark);
    }
    .btn-outline:hover {
      border-color: var(--accent);
      color: var(--accent);
    }
    .btn-dark {
      background-color: var(--primary);
      color: #FFFFFF;
    }
    .btn-dark:hover {
      background-color: var(--primary-light);
    }

    /* 章节通用样式 */
    section {
      padding: 72px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-alt);
    }
    .section-white {
      background-color: var(--bg-white);
    }
    .section-dark {
      background-color: var(--primary);
      color: #F8FAFC;
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-header.text-center {
      text-align: center;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      color: var(--accent);
      text-transform: uppercase;
      letter-spacing: 0.05em;
      margin-bottom: 10px;
      background: rgba(2, 132, 199, 0.08);
      padding: 4px 12px;
      border-radius: 20px;
    }
    .section-dark .section-tag {
      background: rgba(255, 255, 255, 0.12);
      color: #38BDF8;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-dark);
      letter-spacing: -0.02em;
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .section-dark .section-title {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 0;
    }
    .section-dark .section-desc {
      color: #94A3B8;
    }

    /* 蓝图要求：Hero 全宽浅色顶栏 + 矮横幅，避免大居中卡 */
    .hero-strip {
      background: linear-gradient(180deg, #F0F9FF 0%, #FFFFFF 100%);
      border-bottom: 1px solid var(--border-color);
      padding: 56px 0 64px 0;
    }
    .hero-inner {
      display: grid;
      grid-template-columns: 1.25fr 0.95fr;
      gap: 40px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 38px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.25;
      letter-spacing: -0.03em;
      margin-bottom: 18px;
    }
    .hero-p {
      font-size: 16px;
      color: var(--text-main);
      line-height: 1.85;
      margin-bottom: 28px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      align-items: center;
      margin-bottom: 30px;
      flex-wrap: wrap;
    }
    .hero-highlights {
      display: flex;
      gap: 24px;
      border-top: 1px solid rgba(226, 232, 240, 0.8);
      padding-top: 20px;
    }
    .hero-highlight-item {
      font-size: 14px;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .hero-highlight-item strong {
      color: var(--primary);
    }
    .hero-visual {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
      background-color: #fff;
    }
    .hero-visual img {
      width: 100%;
      height: 340px;
      object-fit: cover;
    }
    .hero-overlay-badge {
      position: absolute;
      bottom: 16px;
      left: 16px;
      right: 16px;
      background: rgba(15, 30, 54, 0.88);
      backdrop-filter: blur(8px);
      padding: 12px 18px;
      border-radius: var(--radius-md);
      color: #fff;
      font-size: 13px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    /* 蓝图：区块顺序执行 */
    /* 1. 客户案例卡 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .case-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }
    .case-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: var(--accent);
    }
    .case-img-wrap {
      height: 190px;
      overflow: hidden;
      background: #E2E8F0;
    }
    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .case-card:hover .case-img-wrap img {
      transform: scale(1.05);
    }
    .case-content {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .case-meta {
      font-size: 13px;
      color: var(--accent);
      font-weight: 600;
      margin-bottom: 8px;
    }
    .case-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .case-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      flex: 1;
    }
    .case-metric {
      padding-top: 16px;
      border-top: 1px solid var(--border-color);
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
    }
    .case-metric strong {
      font-size: 20px;
      color: var(--success);
      font-weight: 800;
    }

    /* 2. 结果数据条 (Metrics Bar) */
    .metrics-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-item {
      background: var(--bg-white);
      padding: 36px 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .metric-number {
      font-size: 40px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 8px;
      letter-spacing: -0.02em;
    }
    .metric-label {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-dark);
      margin-bottom: 6px;
    }
    .metric-sub {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 3. 前后对比 */
    .compare-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .compare-card {
      padding: 36px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
    }
    .compare-card.traditional {
      background: #FFFFFF;
      border-left: 4px solid #94A3B8;
    }
    .compare-card.modern {
      background: #FFFFFF;
      border-left: 4px solid var(--accent);
      box-shadow: var(--shadow-md);
    }
    .compare-badge {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 4px;
      margin-bottom: 16px;
    }
    .compare-card.traditional .compare-badge {
      background: #F1F5F9;
      color: var(--text-muted);
    }
    .compare-card.modern .compare-badge {
      background: #E0F2FE;
      color: var(--accent);
    }
    .compare-card h3 {
      font-size: 22px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 16px;
    }
    .compare-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .compare-list li {
      font-size: 15px;
      display: flex;
      gap: 12px;
      line-height: 1.6;
    }
    .compare-card.traditional .compare-list li span:first-child {
      color: #EF4444;
      font-weight: bold;
    }
    .compare-card.modern .compare-list li span:first-child {
      color: var(--success);
      font-weight: bold;
    }

    /* 4. 方法说明与功能矩阵 (Features) */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .feature-box {
      background: var(--bg-white);
      padding: 32px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      transition: all 0.3s ease;
    }
    .feature-box:hover {
      box-shadow: var(--shadow-md);
      border-color: var(--accent);
      transform: translateY(-2px);
    }
    .feature-icon-title {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }
    .feature-index {
      width: 32px;
      height: 32px;
      border-radius: 6px;
      background: var(--bg-alt);
      color: var(--accent);
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
    }
    .feature-box h4 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-dark);
    }
    .feature-box p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 14px;
    }
    .feature-tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }
    .feature-tag-list span {
      font-size: 12px;
      background: var(--bg-alt);
      color: var(--text-main);
      padding: 3px 8px;
      border-radius: 4px;
    }

    /* 5. 沉浸式数据中台理念 (Dark Immersion) */
    .dark-showcase {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .dark-showcase-content h3 {
      font-size: 28px;
      font-weight: 800;
      margin-bottom: 20px;
      line-height: 1.35;
    }
    .dark-showcase-content p {
      font-size: 15px;
      color: #94A3B8;
      margin-bottom: 24px;
      line-height: 1.85;
    }
    .dark-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .dark-list li {
      display: flex;
      gap: 12px;
      font-size: 14px;
      color: #E2E8F0;
    }
    .dark-list-check {
      color: #38BDF8;
      font-weight: 800;
    }
    .dark-visual-frame {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.15);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    }
    .dark-visual-frame img {
      width: 100%;
      height: 380px;
      object-fit: cover;
    }

    /* 6. 场景演示 (Scenarios) */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .scenario-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .scenario-header {
      margin-bottom: 20px;
    }
    .scenario-badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      background: #F0FDF4;
      color: var(--success);
      padding: 3px 10px;
      border-radius: 4px;
      margin-bottom: 12px;
    }
    .scenario-item h4 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 10px;
    }
    .scenario-item p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 16px;
    }
    .scenario-steps {
      border-top: 1px dashed var(--border-color);
      padding-top: 16px;
      font-size: 13px;
      color: var(--text-main);
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    /* 7. 产品功能套件对比 (Suites) */
    .suite-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      align-items: stretch;
    }
    .suite-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px 28px;
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }
    .suite-card.highlight {
      border-color: var(--accent);
      box-shadow: var(--shadow-lg);
      position: relative;
    }
    .suite-top-badge {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--accent);
      color: #fff;
      font-size: 12px;
      padding: 4px 12px;
      border-radius: 12px;
      font-weight: 700;
    }
    .suite-title {
      font-size: 22px;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 8px;
    }
    .suite-target {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 24px;
      padding-bottom: 16px;
      border-bottom: 1px solid var(--border-color);
    }
    .suite-features {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
      margin-bottom: 32px;
      flex: 1;
    }
    .suite-features li {
      font-size: 14px;
      display: flex;
      gap: 10px;
      line-height: 1.5;
    }

    /* 8. 权威证言 (Testimonials) */
    .testi-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testi-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-sm);
    }
    .testi-quote {
      font-size: 14px;
      line-height: 1.8;
      color: var(--text-main);
      margin-bottom: 24px;
      font-style: italic;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .testi-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--bg-alt);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--accent);
      font-size: 16px;
    }
    .testi-info h5 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-dark);
    }
    .testi-info span {
      font-size: 12px;
      color: var(--text-muted);
      display: block;
    }

    /* 9. 资讯与行业分析洞察 (News) */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .news-img {
      height: 180px;
      overflow: hidden;
    }
    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .news-meta {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 10px;
    }
    .news-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 12px;
      line-height: 1.45;
    }
    .news-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 16px;
      flex: 1;
    }
    .news-link {
      font-size: 14px;
      font-weight: 600;
      color: var(--accent);
      align-self: flex-start;
    }

    /* 10. 常见异议拆解 (FAQ Accordion) */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .faq-question::before {
      content: "Q";
      color: var(--accent);
      font-weight: 900;
    }
    .faq-answer {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.8;
      padding-left: 24px;
    }

    /* 11. 合规保障与安全条 (Guarantees) */
    .guarantee-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .guarantee-item {
      background: var(--bg-white);
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: flex-start;
      gap: 16px;
    }
    .guarantee-icon {
      font-size: 24px;
      color: var(--accent);
    }
    .guarantee-item h5 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 4px;
    }
    .guarantee-item p {
      font-size: 12px;
      color: var(--text-muted);
      line-height: 1.6;
      margin: 0;
    }

    /* 12. 最终咨询入口与收口行动区 (Final CTA) */
    .final-cta-section {
      background: linear-gradient(135deg, var(--primary) 0%, #1E3A8A 100%);
      color: #FFFFFF;
      padding: 72px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
    .final-cta-inner {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .final-cta-text h3 {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .final-cta-text p {
      font-size: 16px;
      color: #CBD5E1;
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .final-form-box {
      background: #FFFFFF;
      padding: 32px;
      border-radius: var(--radius-lg);
      box-shadow: 0 16px 32px rgba(0, 0, 0, 0.2);
      color: var(--text-main);
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-dark);
      margin-bottom: 6px;
    }
    .form-input {
      width: 100%;
      height: 44px;
      padding: 0 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-family: inherit;
      color: var(--text-dark);
      outline: none;
    }
    .form-input:focus {
      border-color: var(--accent);
      box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
    }
    .form-submit-btn {
      width: 100%;
      height: 46px;
      background-color: var(--accent);
      color: #fff;
      font-weight: 700;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      font-size: 15px;
      transition: background 0.2s;
    }
    .form-submit-btn:hover {
      background-color: var(--accent-hover);
    }
    .form-privacy-tip {
      font-size: 12px;
      color: var(--text-muted);
      text-align: center;
      margin-top: 10px;
    }

    /* 页脚 Footer */
    .site-footer {
      background-color: #0B132B;
      color: #94A3B8;
      font-size: 14px;
      padding: 64px 0 24px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand h4 {
      font-size: 18px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 16px;
    }
    .footer-brand p {
      font-size: 13px;
      line-height: 1.8;
      color: #94A3B8;
      margin-bottom: 16px;
    }
    .footer-col h5 {
      font-size: 15px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 18px;
    }
    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-col ul a:hover {
      color: #FFFFFF;
    }
    .footer-contact li {
      font-size: 13px;
      line-height: 1.8;
      margin-bottom: 8px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      text-align: center;
      font-size: 13px;
      color: #64748B;
    }
    .footer-bottom a {
      color: #64748B;
      margin: 0 8px;
    }
    .footer-bottom a:hover {
      color: #94A3B8;
    }

    /* 悬浮咨询组件 */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 80px;
      z-index: 990;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .floating-btn {
      width: 48px;
      height: 48px;
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-md);
      color: var(--primary);
      cursor: pointer;
      font-size: 13px;
      font-weight: 700;
      transition: all 0.2s;
    }
    .floating-btn:hover {
      background: var(--accent);
      color: #fff;
      border-color: var(--accent);
    }

    /* 移动端吸底操作条 */
    .mobile-bottom-bar {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      height: 60px;
      background: #FFFFFF;
      border-top: 1px solid var(--border-color);
      z-index: 999;
      padding: 8px 16px;
      box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
    }
    .mobile-bottom-bar-inner {
      display: flex;
      gap: 12px;
      height: 100%;
      align-items: center;
    }
    .mobile-bottom-bar .btn {
      flex: 1;
      min-height: 44px;
      padding: 0;
      font-size: 14px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-inner {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .case-grid, .features-grid, .scenario-grid, .suite-grid, .news-grid, .testi-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .dark-showcase {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-menu {
        display: none; /* 移动端精简展示 */
      }
      .hero-h1 {
        font-size: 28px;
      }
      .section-title {
        font-size: 24px;
      }
      .case-grid, .features-grid, .scenario-grid, .suite-grid, .news-grid, .testi-grid, .metrics-bar, .compare-container, .guarantee-bar {
        grid-template-columns: 1fr;
      }
      .final-cta-inner {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .mobile-bottom-bar {
        display: block;
      }
      body {
        padding-bottom: 60px;
      }
    }