/* roulang page: index */
:root {
      --primary: #1E40AF;
      --primary-hover: #1D4ED8;
      --secondary: #0284C7;
      --accent: #0EA5E9;
      --dark-slate: #0F172A;
      --navy-deep: #0B1329;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-light: #94A3B8;
      --bg-page: #F8FAFC;
      --bg-card: #FFFFFF;
      --border-soft: #E2E8F0;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 4px 16px -2px rgba(15, 23, 42, 0.05);
      --shadow-card: 0 12px 30px -4px rgba(15, 23, 42, 0.06), 0 4px 10px -2px rgba(15, 23, 42, 0.03);
      --shadow-hover: 0 20px 35px -5px rgba(30, 64, 175, 0.12), 0 8px 12px -4px rgba(30, 64, 175, 0.08);
      --container-max: 1240px;
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }
    *, *::before, *::after {
      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;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.68;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }
    ul, ol {
      list-style: none;
    }
    button, input, textarea, select {
      font: inherit;
    }
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    .section-wrap {
      padding-top: 88px;
      padding-bottom: 88px;
      position: relative;
    }
    .section-header {
      max-width: 760px;
      margin-bottom: 54px;
    }
    .section-header.center {
      margin-left: auto;
      margin-right: auto;
      text-align: center;
    }
    .tag-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      background: #EFF6FF;
      border: 1px solid #BFDBFE;
      padding: 4px 14px;
      border-radius: 999px;
      margin-bottom: 16px;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 32px;
      line-height: 1.32;
      font-weight: 800;
      color: var(--dark-slate);
      letter-spacing: -0.5px;
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.75;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 600;
      font-size: 15px;
      padding: 13px 28px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      border: none;
      transition: var(--transition);
      white-space: nowrap;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      color: #FFFFFF;
      box-shadow: 0 8px 18px -3px rgba(30, 64, 175, 0.35);
    }
    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary) 100%);
      transform: translateY(-2px);
      box-shadow: 0 12px 24px -4px rgba(30, 64, 175, 0.45);
    }
    .btn-secondary {
      background: #FFFFFF;
      color: var(--primary);
      border: 1px solid #CBD5E1;
      box-shadow: var(--shadow-sm);
    }
    .btn-secondary:hover {
      background: #F1F5F9;
      border-color: #94A3B8;
      color: var(--primary-hover);
      transform: translateY(-2px);
    }

    /* 顶部栏 */
    .topbar {
      background: #F1F5F9;
      border-bottom: 1px solid var(--border-soft);
      font-size: 13px;
      color: var(--text-muted);
      padding: 8px 0;
    }
    .topbar-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
    }
    .topbar-status {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 500;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      background: #10B981;
      border-radius: 50%;
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
    }
    .topbar-info {
      display: flex;
      gap: 20px;
    }

    /* 主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.85);
      transition: var(--transition);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .logo-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      font-size: 20px;
      color: var(--primary);
      letter-spacing: -0.3px;
    }
    .logo-symbol {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFFFFF;
      font-size: 19px;
      box-shadow: 0 4px 10px rgba(30, 64, 175, 0.3);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: #334155;
      padding: 6px 0;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary);
      transition: var(--transition);
    }
    .nav-link:hover::after, .nav-link.active::after {
      width: 100%;
    }
    .nav-action {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .nav-mobile-toggle {
      display: none;
      background: none;
      border: 1px solid var(--border-soft);
      padding: 8px 12px;
      border-radius: 6px;
      font-size: 18px;
      cursor: pointer;
    }

    /* 板块 1: Hero 斜切双栏门户 */
    .hero-section {
      position: relative;
      background: radial-gradient(circle at 10% 20%, #EFF6FF 0%, #FFFFFF 85%);
      padding: 70px 0 100px;
      border-bottom: 1px solid #E2E8F0;
      overflow: hidden;
    }
    .hero-bg-cover {
      position: absolute;
      top: 0;
      right: 0;
      width: 50%;
      height: 100%;
      object-fit: cover;
      opacity: 0.12;
      pointer-events: none;
      mask-image: linear-gradient(to left, rgba(0,0,0,1) 0%, rgba(0,0,0,0) 90%);
      -webkit-mask-image: linear-gradient(to left, rgba(0,0,0,1) 0%, rgba(0,0,0,0) 90%);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
      position: relative;
      z-index: 2;
    }
    .hero-h1 {
      font-size: 44px;
      line-height: 1.25;
      font-weight: 800;
      color: var(--dark-slate);
      letter-spacing: -1px;
      margin-bottom: 22px;
    }
    .hero-lead {
      font-size: 17px;
      line-height: 1.8;
      color: #334155;
      margin-bottom: 34px;
      max-width: 630px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 38px;
    }
    .hero-badges-row {
      display: flex;
      flex-wrap: wrap;
      gap: 24px;
      border-top: 1px solid #E2E8F0;
      padding-top: 24px;
    }
    .hero-badge-item {
      display: flex;
      flex-direction: column;
    }
    .badge-val {
      font-size: 20px;
      font-weight: 800;
      color: var(--primary);
    }
    .badge-lab {
      font-size: 12px;
      color: var(--text-muted);
    }
    /* Hero 右侧快捷入口网格 */
    .portal-quick-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      background: rgba(255, 255, 255, 0.85);
      backdrop-filter: blur(8px);
      padding: 24px;
      border-radius: var(--radius-lg);
      border: 1px solid rgba(203, 213, 225, 0.7);
      box-shadow: var(--shadow-card);
    }
    .portal-card {
      background: #FFFFFF;
      padding: 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-soft);
      transition: var(--transition);
      display: block;
    }
    .portal-card:hover {
      border-color: var(--accent);
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .portal-icon {
      width: 40px;
      height: 40px;
      border-radius: 8px;
      background: #EFF6FF;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      margin-bottom: 12px;
      font-weight: 700;
    }
    .portal-title {
      font-size: 15px;
      font-weight: 700;
      color: var(--dark-slate);
      margin-bottom: 6px;
    }
    .portal-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 板块 2: 痛点洞察 */
    .pain-section {
      background: #FFFFFF;
      border-bottom: 1px solid var(--border-soft);
    }
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .pain-card {
      background: #F8FAFC;
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-md);
      padding: 32px 26px;
      position: relative;
      transition: var(--transition);
    }
    .pain-card:hover {
      border-color: #CBD5E1;
      background: #FFFFFF;
      box-shadow: var(--shadow-card);
    }
    .pain-mark {
      color: #DC2626;
      font-size: 13px;
      font-weight: 700;
      background: #FEE2E2;
      padding: 3px 10px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 14px;
    }
    .pain-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--dark-slate);
      margin-bottom: 10px;
    }
    .pain-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.68;
    }

    /* 板块 3: 解决方案 */
    .solution-section {
      background: #F8FAFC;
    }
    .solution-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
      margin-bottom: 60px;
    }
    .solution-row.reverse {
      direction: rtl;
    }
    .solution-row.reverse .solution-content {
      direction: ltr;
    }
    .solution-row.reverse .solution-media {
      direction: ltr;
    }
    .solution-media {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-soft);
      box-shadow: var(--shadow-card);
    }
    .solution-media img {
      width: 100%;
      height: 340px;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .solution-media:hover img {
      transform: scale(1.03);
    }
    .solution-content h3 {
      font-size: 24px;
      font-weight: 800;
      color: var(--dark-slate);
      margin-bottom: 14px;
    }
    .solution-content p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 20px;
    }
    .solution-points {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .point-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 14px;
      color: var(--dark-slate);
      font-weight: 600;
    }
    .point-check {
      color: var(--secondary);
      font-weight: 900;
      font-size: 15px;
    }

    /* 板块 4: 核心优势六宫格 */
    .adv-section {
      background: #FFFFFF;
      border-top: 1px solid var(--border-soft);
      border-bottom: 1px solid var(--border-soft);
    }
    .adv-grid-6 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .adv-card {
      background: #FFFFFF;
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-md);
      padding: 30px;
      transition: var(--transition);
      box-shadow: var(--shadow-sm);
    }
    .adv-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: #BFDBFE;
    }
    .adv-icon {
      width: 48px;
      height: 48px;
      background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 18px;
    }
    .adv-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--dark-slate);
      margin-bottom: 10px;
    }
    .adv-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 5: 场景演示 */
    .scene-section {
      background: #F8FAFC;
    }
    .scene-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .scene-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-soft);
      box-shadow: var(--shadow-card);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .scene-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .scene-thumb {
      height: 200px;
      overflow: hidden;
      position: relative;
    }
    .scene-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .scene-card:hover .scene-thumb img {
      transform: scale(1.05);
    }
    .scene-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .scene-tag {
      font-size: 12px;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 8px;
    }
    .scene-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--dark-slate);
      margin-bottom: 10px;
    }
    .scene-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
      flex: 1;
    }
    .scene-metric {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      background: #EFF6FF;
      padding: 6px 12px;
      border-radius: 6px;
      display: inline-block;
    }

    /* 板块 6: 深色高对比架构与理念 (Dark band) */
    .tech-deep-section {
      background: var(--dark-slate);
      color: #E2E8F0;
      padding: 96px 0;
      position: relative;
    }
    .tech-deep-section .section-title {
      color: #FFFFFF;
    }
    .tech-deep-section .section-desc {
      color: #94A3B8;
    }
    .compare-board {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      margin-top: 48px;
    }
    .compare-column {
      border-radius: var(--radius-md);
      padding: 34px;
      position: relative;
    }
    .col-traditional {
      background: rgba(30, 41, 59, 0.7);
      border: 1px solid rgba(148, 163, 184, 0.2);
    }
    .col-modern {
      background: linear-gradient(145deg, rgba(30, 64, 175, 0.3) 0%, rgba(15, 23, 42, 0.8) 100%);
      border: 1px solid #3B82F6;
      box-shadow: 0 10px 30px rgba(59, 130, 246, 0.2);
    }
    .col-modern::before {
      content: 'AI 搜索平台推荐标准';
      position: absolute;
      top: -12px;
      right: 24px;
      background: #2563EB;
      color: #FFFFFF;
      font-size: 12px;
      padding: 2px 10px;
      border-radius: 999px;
      font-weight: 700;
    }
    .compare-col-title {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 20px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .col-traditional .compare-col-title {
      color: #CBD5E1;
    }
    .col-modern .compare-col-title {
      color: #60A5FA;
    }
    .compare-list li {
      font-size: 14px;
      line-height: 1.8;
      margin-bottom: 12px;
      display: flex;
      align-items: flex-start;
      gap: 10px;
    }
    .compare-list .cross {
      color: #F87171;
    }
    .compare-list .check {
      color: #34D399;
    }

    /* 板块 7: 实施流程与交付管线 */
    .pipeline-section {
      background: #FFFFFF;
      border-bottom: 1px solid var(--border-soft);
    }
    .pipeline-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .pipeline-step {
      background: #F8FAFC;
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-md);
      padding: 28px 22px;
      position: relative;
      transition: var(--transition);
    }
    .pipeline-step:hover {
      background: #FFFFFF;
      border-color: #93C5FD;
      box-shadow: var(--shadow-card);
    }
    .step-number {
      font-size: 30px;
      font-weight: 900;
      color: #CBD5E1;
      line-height: 1;
      margin-bottom: 14px;
    }
    .pipeline-step:hover .step-number {
      color: var(--primary);
    }
    .step-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--dark-slate);
      margin-bottom: 8px;
    }
    .step-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块 8: 核心效能数据条 */
    .metric-section {
      background: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%);
      padding: 60px 0;
      border-bottom: 1px solid #BFDBFE;
    }
    .metric-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }
    .metric-item {
      padding: 10px;
    }
    .metric-num {
      font-size: 42px;
      font-weight: 900;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 6px;
      font-feature-settings: "tnum";
    }
    .metric-label {
      font-size: 15px;
      font-weight: 700;
      color: var(--dark-slate);
      margin-bottom: 4px;
    }
    .metric-sub {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块 9: 社会认同与客户口碑 */
    .testimonial-section {
      background: #FFFFFF;
    }
    .testi-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testi-card {
      background: #F8FAFC;
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-md);
      padding: 30px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .testi-card:hover {
      background: #FFFFFF;
      border-color: #BFDBFE;
      box-shadow: var(--shadow-card);
    }
    .testi-quote {
      font-size: 14px;
      line-height: 1.75;
      color: #334155;
      margin-bottom: 24px;
      position: relative;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid var(--border-soft);
      padding-top: 16px;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #DBEAFE;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 16px;
    }
    .author-name {
      font-size: 15px;
      font-weight: 700;
      color: var(--dark-slate);
    }
    .author-title {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块 10: 行业资讯与前沿动态 */
    .news-section {
      background: #F8FAFC;
      border-top: 1px solid var(--border-soft);
      border-bottom: 1px solid var(--border-soft);
    }
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-soft);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .news-thumb {
      height: 180px;
      overflow: hidden;
    }
    .news-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .news-card:hover .news-thumb img {
      transform: scale(1.05);
    }
    .news-body {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .news-meta {
      font-size: 12px;
      color: var(--text-light);
      margin-bottom: 10px;
      display: flex;
      justify-content: space-between;
    }
    .news-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--dark-slate);
      margin-bottom: 10px;
      line-height: 1.45;
    }
    .news-summary {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.68;
      flex: 1;
    }

    /* 板块 11: 套餐与选型对比 */
    .pricing-section {
      background: #FFFFFF;
    }
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      align-items: stretch;
    }
    .pricing-card {
      background: #FFFFFF;
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-lg);
      padding: 38px 28px;
      display: flex;
      flex-direction: column;
      position: relative;
      transition: var(--transition);
    }
    .pricing-card:hover {
      box-shadow: var(--shadow-hover);
    }
    .pricing-card.featured {
      border: 2px solid var(--primary);
      background: #FAFCFF;
      box-shadow: var(--shadow-card);
      transform: scale(1.03);
      z-index: 2;
    }
    .pricing-badge {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      color: #FFFFFF;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 16px;
      border-radius: 999px;
    }
    .pricing-name {
      font-size: 20px;
      font-weight: 800;
      color: var(--dark-slate);
      margin-bottom: 8px;
    }
    .pricing-desc {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 24px;
      min-height: 38px;
    }
    .pricing-price {
      font-size: 34px;
      font-weight: 900;
      color: var(--primary);
      margin-bottom: 24px;
      display: flex;
      align-items: baseline;
      gap: 4px;
    }
    .pricing-unit {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 500;
    }
    .pricing-features {
      margin-bottom: 30px;
      flex: 1;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .p-feat-item {
      font-size: 13px;
      color: #334155;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .p-feat-item .p-check {
      color: #10B981;
      font-weight: 800;
    }

    /* 板块 12: 保障图标条 */
    .trust-strip-section {
      background: #0F172A;
      color: #FFFFFF;
      padding: 46px 0;
    }
    .trust-strip-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .trust-item {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .trust-icon {
      width: 46px;
      height: 46px;
      border-radius: 10px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      color: #38BDF8;
      flex-shrink: 0;
    }
    .trust-text h4 {
      font-size: 15px;
      font-weight: 700;
      color: #F8FAFC;
      margin-bottom: 2px;
    }
    .trust-text p {
      font-size: 12px;
      color: #94A3B8;
    }

    /* 板块 13: 常见解答手风琴 */
    .faq-section {
      background: #F8FAFC;
    }
    .faq-container {
      max-width: 820px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .faq-item:hover {
      border-color: #BFDBFE;
    }
    .faq-header {
      padding: 20px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-size: 16px;
      font-weight: 700;
      color: var(--dark-slate);
      user-select: none;
    }
    .faq-toggle {
      font-size: 18px;
      color: var(--primary);
      transition: transform 0.28s ease;
    }
    .faq-item.active .faq-toggle {
      transform: rotate(45deg);
    }
    .faq-body {
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
      display: none;
    }
    .faq-item.active .faq-body {
      display: block;
    }

    /* 板块 14: 底部转化表单卡片 */
    .cta-form-section {
      background: #FFFFFF;
      padding: 90px 0;
    }
    .cta-banner-card {
      background: linear-gradient(135deg, var(--primary) 0%, #1E3A8A 100%);
      border-radius: var(--radius-lg);
      padding: 60px 48px;
      color: #FFFFFF;
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
      box-shadow: 0 20px 40px rgba(30, 64, 175, 0.25);
    }
    .cta-info h2 {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .cta-info p {
      font-size: 15px;
      color: #DBEAFE;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .cta-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }
    .cta-tag-item {
      font-size: 13px;
      background: rgba(255, 255, 255, 0.15);
      border: 1px solid rgba(255, 255, 255, 0.2);
      padding: 6px 14px;
      border-radius: 999px;
    }
    .cta-form-box {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 32px;
      color: var(--dark-slate);
      box-shadow: var(--shadow-card);
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: #334155;
      margin-bottom: 6px;
    }
    .form-input {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-soft);
      border-radius: 6px;
      font-size: 14px;
      outline: none;
      transition: var(--transition);
    }
    .form-input:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.15);
    }
    .btn-submit {
      width: 100%;
      margin-top: 10px;
    }

    /* 页脚 */
    .site-footer {
      background: var(--navy-deep);
      color: #94A3B8;
      padding: 72px 0 32px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 14px;
    }
    .footer-top {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 54px;
    }
    .footer-brand .logo-brand {
      color: #FFFFFF;
      margin-bottom: 16px;
    }
    .footer-desc {
      line-height: 1.7;
      margin-bottom: 20px;
      font-size: 13px;
      color: #94A3B8;
      max-width: 320px;
    }
    .footer-col h5 {
      font-size: 15px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 20px;
    }
    .footer-links li {
      margin-bottom: 12px;
    }
    .footer-links a:hover {
      color: #38BDF8;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 28px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      font-size: 12px;
      color: #64748B;
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .pain-grid, .adv-grid-6, .scene-grid, .news-grid, .pricing-grid, .testi-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .pipeline-grid, .trust-strip-grid, .metric-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .cta-banner-card {
        grid-template-columns: 1fr;
        padding: 40px 30px;
      }
      .footer-top {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .topbar {
        display: none;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        border-bottom: 1px solid var(--border-soft);
        box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        gap: 16px;
      }
      .nav-links.active {
        display: flex;
      }
      .nav-mobile-toggle {
        display: block;
      }
      .hero-h1 {
        font-size: 32px;
      }
      .section-title {
        font-size: 26px;
      }
      .section-wrap {
        padding-top: 60px;
        padding-bottom: 60px;
      }
      .pain-grid, .adv-grid-6, .scene-grid, .news-grid, .pricing-grid, .testi-grid, .solution-row, .compare-board {
        grid-template-columns: 1fr;
      }
      .solution-row.reverse {
        direction: ltr;
      }
      .pipeline-grid, .trust-strip-grid, .metric-grid {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
    }