/* roulang page: index */
:root {
      --primary: #0F2537;
      --accent: #0A84FF;
      --accent-hover: #0066cc;
      --success: #00A870;
      --warning: #F59E0B;
      --bg-main: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-dark: #0B1522;
      --bg-dark-card: #152538;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --text-light: #94A3B8;
      --border: #E2E8F0;
      --border-dark: #1E3852;
      --shadow-sm: 0 1px 3px rgba(15, 37, 55, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(15, 37, 55, 0.08), 0 2px 4px -2px rgba(15, 37, 55, 0.04);
      --shadow-hover: 0 14px 28px -8px rgba(15, 37, 55, 0.12);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      --container-max: 1240px;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.68;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

    button, input, select, textarea {
      font-family: inherit;
      font-size: 1rem;
      border: none;
      outline: none;
    }

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

    /* 顶部服务栏 */
    .top-bar {
      background-color: #071520;
      color: var(--text-light);
      font-size: 0.85rem;
      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;
      flex-wrap: wrap;
      gap: 12px;
    }
    .top-bar-notice {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: var(--success);
      display: inline-block;
      box-shadow: 0 0 6px var(--success);
    }

    /* 主导航 */
    .header-main {
      background-color: var(--bg-white);
      border-bottom: 1px solid var(--border);
      position: sticky;
      top: 0;
      z-index: 1000;
      box-shadow: var(--shadow-sm);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .logo-box {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .logo-emblem {
      width: 40px;
      height: 40px;
      background: linear-gradient(135deg, var(--primary) 0%, #1e3a5f 100%);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      font-weight: 700;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.2);
    }
    .logo-text-wrap h2 {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
      line-height: 1.2;
    }
    .logo-text-wrap span {
      font-size: 0.75rem;
      color: var(--text-muted);
      letter-spacing: 0.5px;
      display: block;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-link {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      position: relative;
      padding: 6px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--accent);
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0%;
      height: 2px;
      background-color: var(--accent);
      transition: var(--transition);
    }
    .nav-link:hover::after, .nav-link.active::after {
      width: 100%;
    }

    .nav-action {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .nav-btn {
      background-color: var(--accent);
      color: #fff;
      font-size: 0.92rem;
      font-weight: 600;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      box-shadow: 0 4px 10px rgba(10, 132, 255, 0.24);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .nav-btn:hover {
      background-color: var(--accent-hover);
      transform: translateY(-1px);
    }
    .nav-btn:active {
      transform: scale(0.98);
    }

    /* 移动端汉堡按钮 */
    .menu-toggle {
      display: none;
      background: none;
      cursor: pointer;
      padding: 6px;
      flex-direction: column;
      gap: 5px;
    }
    .menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background-color: var(--primary);
      transition: var(--transition);
    }

    /* 通用板块排版规范 */
    .section-block {
      padding: 96px 0;
      position: relative;
    }
    .section-block.bg-alt {
      background-color: #F1F5F9;
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }
    .section-header {
      margin-bottom: 56px;
      text-align: center;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-header.text-left {
      text-align: left;
      margin-left: 0;
      margin-right: 0;
    }
    .badge-sub {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--accent);
      background-color: rgba(10, 132, 255, 0.08);
      padding: 4px 12px;
      border-radius: 20px;
      letter-spacing: 0.5px;
      margin-bottom: 12px;
      text-transform: uppercase;
    }
    .section-title {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.6px;
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.75;
    }

    /* 1. HERO BANNER: 帮助中心检索架构 + 热门芯片 */
    .hero-section {
      position: relative;
      background: linear-gradient(180deg, #071523 0%, #0F2537 100%);
      color: #fff;
      padding: 100px 0 110px 0;
      overflow: hidden;
    }
    .hero-section::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0; bottom: 0;
      background-image: url('/assets/images/005f3ab886cf7c7a.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.12;
      pointer-events: none;
    }
    .hero-inner {
      position: relative;
      z-index: 2;
      max-width: 880px;
      margin: 0 auto;
      text-align: center;
    }
    .hero-h1 {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -1px;
    }
    .hero-h1 span {
      color: #38bdf8;
    }
    .hero-summary {
      font-size: 1.12rem;
      color: #cbd5e1;
      line-height: 1.8;
      margin-bottom: 40px;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }
    /* 文档中心搜索栏 */
    .hero-search-box {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 8px 10px 8px 24px;
      box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
      display: flex;
      align-items: center;
      gap: 12px;
      max-width: 720px;
      margin: 0 auto 24px auto;
    }
    .hero-search-box svg {
      width: 22px;
      height: 22px;
      fill: #64748b;
      flex-shrink: 0;
    }
    .hero-search-input {
      flex: 1;
      font-size: 1.05rem;
      color: var(--text-main);
      background: transparent;
      padding: 10px 0;
    }
    .hero-search-btn {
      background-color: var(--accent);
      color: #fff;
      font-weight: 700;
      font-size: 1rem;
      padding: 14px 28px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      white-space: nowrap;
    }
    .hero-search-btn:hover {
      background-color: var(--accent-hover);
    }
    .hero-chips-wrap {
      display: flex;
      align-items: center;
      justify-content: center;
      flex-wrap: wrap;
      gap: 10px;
      font-size: 0.88rem;
      color: #94a3b8;
    }
    .hero-chip-item {
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.15);
      padding: 5px 14px;
      border-radius: 20px;
      color: #e2e8f0;
      transition: var(--transition);
    }
    .hero-chip-item:hover {
      background: rgba(255, 255, 255, 0.22);
      color: #ffffff;
      border-color: rgba(255, 255, 255, 0.3);
    }

    /* 2. KPI 看板 (业务数据指标条) */
    .kpi-section {
      background-color: #ffffff;
      padding: 44px 0;
      border-bottom: 1px solid var(--border);
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.02);
    }
    .kpi-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 30px;
      divide-x: 1px solid var(--border);
    }
    .kpi-card {
      text-align: center;
      padding: 8px 16px;
    }
    .kpi-num {
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 6px;
      font-feature-settings: "tnum";
    }
    .kpi-num span {
      font-size: 1.25rem;
      color: var(--accent);
      margin-left: 2px;
    }
    .kpi-label {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .kpi-sub {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* 3. 业务综述与合规对接标准 */
    .intro-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 56px;
      align-items: center;
    }
    .intro-media {
      position: relative;
    }
    .intro-img {
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-hover);
      border: 1px solid var(--border);
      width: 100%;
      height: 380px;
    }
    .intro-badge-float {
      position: absolute;
      bottom: -20px;
      right: -20px;
      background: var(--primary);
      color: #fff;
      padding: 18px 24px;
      border-radius: var(--radius-md);
      box-shadow: 0 10px 25px rgba(15, 37, 55, 0.3);
      max-width: 240px;
      border: 1px solid rgba(255, 255, 255, 0.15);
    }
    .intro-badge-float strong {
      display: block;
      font-size: 1.4rem;
      color: #38bdf8;
      margin-bottom: 4px;
    }
    .intro-feature-list {
      list-style: none;
      margin-top: 24px;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .intro-feature-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 0.98rem;
      color: var(--text-main);
    }
    .intro-icon-check {
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: rgba(0, 168, 112, 0.12);
      color: var(--success);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.75rem;
      font-weight: 900;
      flex-shrink: 0;
      margin-top: 3px;
    }

    /* 4. 核心优势网格（严格 6 卡片） */
    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .adv-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      transition: var(--transition);
      position: relative;
    }
    .adv-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: #cbd5e1;
    }
    .adv-icon-box {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-sm);
      background: #f1f5f9;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      font-size: 1.4rem;
    }
    .adv-card:hover .adv-icon-box {
      background: var(--accent);
      color: #ffffff;
    }
    .adv-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .adv-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 5. 热门申报服务矩阵（严格 3 列） */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .service-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }
    .service-card.recommended {
      border: 2px solid var(--accent);
      position: relative;
    }
    .recom-tag {
      position: absolute;
      top: 16px;
      right: 16px;
      background: var(--accent);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 4px;
      letter-spacing: 0.5px;
    }
    .service-img {
      height: 180px;
      width: 100%;
    }
    .service-body {
      padding: 30px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .service-type-title {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .service-scope-tag {
      font-size: 0.85rem;
      color: var(--accent);
      font-weight: 600;
      margin-bottom: 16px;
    }
    .service-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 24px;
    }
    .service-meta-box {
      background: #F8FAFC;
      border-radius: var(--radius-sm);
      padding: 16px;
      margin-bottom: 24px;
      display: flex;
      justify-content: space-between;
      border: 1px solid var(--border);
    }
    .meta-item {
      text-align: left;
    }
    .meta-item span {
      display: block;
      font-size: 0.78rem;
      color: var(--text-muted);
    }
    .meta-item strong {
      font-size: 0.95rem;
      color: var(--primary);
    }
    .service-btn {
      margin-top: auto;
      text-align: center;
      padding: 12px;
      background: var(--primary);
      color: #fff;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.95rem;
      transition: var(--transition);
    }
    .service-card.recommended .service-btn {
      background: var(--accent);
    }
    .service-btn:hover {
      opacity: 0.92;
    }

    /* 6. 结果对比与传统代理差异 */
    .compare-table-wrap {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }
    .compare-table th {
      padding: 18px 24px;
      background: #F1F5F9;
      font-weight: 700;
      font-size: 0.95rem;
      color: var(--primary);
      border-bottom: 1px solid var(--border);
    }
    .compare-table th.highlight-col {
      background: rgba(10, 132, 255, 0.08);
      color: var(--accent);
    }
    .compare-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border);
      font-size: 0.92rem;
      color: var(--text-main);
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .compare-table td.highlight-col {
      background: rgba(10, 132, 255, 0.02);
      font-weight: 600;
      color: var(--primary);
    }
    .tag-diff-yes {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--success);
      font-weight: 700;
    }
    .tag-diff-no {
      color: #94a3b8;
    }

    /* 7. 深色理念与合规风控标准 */
    .dark-section {
      background-color: var(--bg-dark);
      color: #fff;
      padding: 100px 0;
      position: relative;
    }
    .dark-section .section-title {
      color: #FFFFFF;
    }
    .dark-section .section-desc {
      color: var(--text-light);
    }
    .dark-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .dark-card {
      background: var(--bg-dark-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 32px 26px;
      transition: var(--transition);
    }
    .dark-card:hover {
      border-color: var(--accent);
      transform: translateY(-4px);
    }
    .dark-card-step {
      font-size: 0.82rem;
      font-weight: 800;
      color: #38bdf8;
      letter-spacing: 1px;
      margin-bottom: 12px;
      text-transform: uppercase;
    }
    .dark-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: #FFFFFF;
    }
    .dark-card p {
      font-size: 0.9rem;
      color: var(--text-light);
      line-height: 1.7;
    }

    /* 8. 流程闭环步骤 */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 20px;
      position: relative;
    }
    .process-item {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      position: relative;
      transition: var(--transition);
    }
    .process-item:hover {
      box-shadow: var(--shadow-hover);
      border-color: var(--accent);
    }
    .process-num {
      width: 36px;
      height: 36px;
      background: var(--primary);
      color: #fff;
      font-size: 1rem;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      margin-bottom: 16px;
    }
    .process-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .process-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 9. 企业授权案例故事 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .case-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .case-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .case-img-box {
      height: 190px;
      overflow: hidden;
    }
    .case-img-box img {
      width: 100%;
      height: 100%;
      transition: transform 0.4s ease;
    }
    .case-card:hover .case-img-box img {
      transform: scale(1.05);
    }
    .case-content {
      padding: 26px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .case-sector {
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--accent);
      margin-bottom: 8px;
      text-transform: uppercase;
    }
    .case-name {
      font-size: 1.18rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
      line-height: 1.4;
    }
    .case-quote {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.68;
      margin-bottom: 20px;
    }
    .case-footer {
      margin-top: auto;
      border-top: 1px solid var(--border);
      padding-top: 16px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* 10. 用户口碑评价网格 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .review-item {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
    }
    .review-stars {
      color: #F59E0B;
      font-size: 0.95rem;
      margin-bottom: 12px;
    }
    .review-text {
      font-size: 0.92rem;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #e2e8f0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
      font-size: 1rem;
    }
    .author-info h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--primary);
    }
    .author-info p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 11. 专利资讯与审查要点 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .news-card {
      background: var(--bg-white);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .news-card:hover {
      box-shadow: var(--shadow-hover);
    }
    .news-img {
      height: 180px;
      width: 100%;
    }
    .news-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 0.82rem;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
      line-height: 1.45;
    }
    .news-excerpt {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
    }
    .news-link {
      margin-top: auto;
      font-size: 0.88rem;
      font-weight: 700;
      color: var(--accent);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 12. 平台保障图标条 */
    .trust-strip {
      background: #FFFFFF;
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
      padding: 36px 0;
    }
    .trust-strip-inner {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .trust-item {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .trust-icon {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: rgba(10, 132, 255, 0.08);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      flex-shrink: 0;
    }
    .trust-title {
      font-size: 0.98rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 2px;
    }
    .trust-sub {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* 13. 常见疑问解答 (FAQ 手风琴) */
    .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);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-summary {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--primary);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
      list-style: none;
    }
    .faq-summary::-webkit-details-marker {
      display: none;
    }
    .faq-summary::after {
      content: '+';
      font-size: 1.4rem;
      font-weight: 400;
      color: var(--text-muted);
      transition: var(--transition);
    }
    details[open] .faq-summary::after {
      content: '−';
      color: var(--accent);
    }
    details[open] .faq-summary {
      border-bottom: 1px solid var(--border);
      background-color: #fafbfd;
    }
    .faq-content {
      padding: 20px 24px;
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.75;
    }

    /* 14. 转化收口表单区块 */
    .cta-section {
      background: linear-gradient(135deg, #0B1C2D 0%, #0F2537 100%);
      color: #fff;
      padding: 80px 0;
      position: relative;
    }
    .cta-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 50px;
      align-items: center;
    }
    .cta-info h2 {
      font-size: 2.2rem;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 18px;
    }
    .cta-info p {
      font-size: 1.02rem;
      color: #94a3b8;
      line-height: 1.8;
      margin-bottom: 28px;
    }
    .cta-form-box {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 36px 32px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
      color: var(--text-main);
    }
    .cta-form-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 8px;
      text-align: center;
    }
    .cta-form-sub {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 24px;
      text-align: center;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      padding: 12px 14px;
      font-size: 0.95rem;
      transition: var(--transition);
      background: #F8FAFC;
    }
    .form-control:focus {
      border-color: var(--accent);
      background: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(10, 132, 255, 0.12);
    }
    .cta-submit-btn {
      width: 100%;
      background: var(--accent);
      color: #fff;
      font-size: 1.02rem;
      font-weight: 700;
      padding: 14px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      margin-top: 8px;
    }
    .cta-submit-btn:hover {
      background: var(--accent-hover);
    }
    .form-note {
      font-size: 0.78rem;
      color: var(--text-muted);
      text-align: center;
      margin-top: 12px;
    }

    /* 底部固定转化浮动条 */
    .fixed-action-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: rgba(15, 37, 55, 0.95);
      backdrop-filter: blur(10px);
      color: #fff;
      padding: 12px 24px;
      z-index: 999;
      box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .fixed-bar-text {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .fixed-bar-text strong {
      font-size: 1.05rem;
      color: #FFFFFF;
    }
    .fixed-bar-text span {
      font-size: 0.85rem;
      color: #94a3b8;
    }
    .fixed-bar-actions {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .fixed-phone-btn {
      color: #fff;
      font-weight: 700;
      font-size: 1rem;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .fixed-submit-btn {
      background: var(--accent);
      color: #fff;
      font-weight: 700;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
    }

    /* 页脚设计 */
    .site-footer {
      background: #071520;
      color: #94a3b8;
      font-size: 0.9rem;
      padding: 72px 0 96px 0; /* 留出底部浮动条高度 */
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 48px;
      margin-bottom: 48px;
    }
    .footer-brand h3 {
      font-size: 1.35rem;
      font-weight: 800;
      color: #fff;
      margin-bottom: 12px;
    }
    .footer-brand p {
      line-height: 1.7;
      color: #64748b;
      margin-bottom: 20px;
    }
    .footer-title {
      font-size: 1rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: var(--accent);
    }
    .footer-contact p {
      margin-bottom: 8px;
      line-height: 1.6;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 28px;
      text-align: center;
      font-size: 0.82rem;
      color: #64748b;
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .advantages-grid,
      .services-grid,
      .dark-grid,
      .case-grid,
      .reviews-grid,
      .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline {
        grid-template-columns: repeat(3, 1fr);
      }
      .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .menu-toggle {
        display: flex;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        border-bottom: 1px solid var(--border);
        gap: 18px;
      }
      .nav-links.open {
        display: flex;
      }
      .hero-h1 {
        font-size: 2.1rem;
      }
      .hero-search-box {
        flex-direction: column;
        padding: 16px;
      }
      .hero-search-btn {
        width: 100%;
      }
      .intro-grid,
      .cta-grid {
        grid-template-columns: 1fr;
      }
      .advantages-grid,
      .services-grid,
      .dark-grid,
      .case-grid,
      .reviews-grid,
      .news-grid,
      .process-timeline,
      .trust-strip-inner,
      .kpi-grid {
        grid-template-columns: 1fr;
      }
      .section-block {
        padding: 64px 0;
      }
      .section-title {
        font-size: 1.8rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .fixed-bar-text span {
        display: none;
      }
    }

    @media (max-width: 480px) {
      .hero-h1 {
        font-size: 1.75rem;
      }
      .fixed-action-bar {
        padding: 10px 14px;
      }
      .fixed-bar-text strong {
        font-size: 0.9rem;
      }
      .fixed-submit-btn {
        padding: 8px 14px;
        font-size: 0.85rem;
      }
    }