/* roulang page: index */
:root {
      --primary: #0D5C75;
      --primary-dark: #083E4F;
      --primary-light: #167A99;
      --secondary: #0EA5E9;
      --accent: #10B981;
      --accent-soft: #ECFDF5;
      --bg-main: #FFFFFF;
      --bg-alt: #F8FAFC;
      --bg-subtle: #F1F5F9;
      --bg-dark: #081B26;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --border-focus: #0EA5E9;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-full: 9999px;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.03);
      --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
      --transition: all 0.25s 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", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-body);
      background-color: var(--bg-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      overflow-x: hidden;
    }

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

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

    button, input, select, textarea {
      font-family: inherit;
      font-size: inherit;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* Top Bar */
    .top-bar {
      background-color: #06151F;
      color: #94A3B8;
      font-size: 13px;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .top-bar-left, .top-bar-right {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .top-bar-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .badge-status {
      display: inline-block;
      width: 8px;
      height: 8px;
      background-color: var(--accent);
      border-radius: 50%;
      box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.3);
    }

    /* Header Nav */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 22px;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-weight: 800;
      font-size: 18px;
      box-shadow: 0 4px 10px rgba(13, 92, 117, 0.25);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 28px;
    }
    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
      padding: 8px 0;
      position: relative;
    }
    .nav-link:hover {
      color: var(--primary);
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--primary);
      transition: var(--transition);
    }
    .nav-link:hover::after {
      width: 100%;
    }
    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      background: linear-gradient(135deg, var(--primary), var(--primary-light));
      color: #FFF;
      border-radius: var(--radius-full);
      font-size: 14px;
      font-weight: 600;
      box-shadow: 0 4px 12px rgba(13, 92, 117, 0.2);
    }
    .nav-cta:hover {
      background: linear-gradient(135deg, var(--primary-dark), var(--primary));
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(13, 92, 117, 0.3);
      color: #FFF;
    }

    /* Mobile toggle */
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .mobile-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background-color: var(--text-main);
      margin: 5px 0;
      transition: var(--transition);
    }

    /* Buttons */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 28px;
      border-radius: var(--radius-md);
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      min-height: 46px;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #FFF;
      box-shadow: 0 4px 14px rgba(13, 92, 117, 0.25);
    }
    .btn-primary:hover {
      background-color: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(13, 92, 117, 0.35);
      color: #FFF;
    }
    .btn-outline {
      background-color: transparent;
      color: var(--primary);
      border-color: var(--primary);
    }
    .btn-outline:hover {
      background-color: rgba(13, 92, 117, 0.05);
      border-color: var(--primary-dark);
      color: var(--primary-dark);
    }
    .btn-accent {
      background: linear-gradient(135deg, var(--accent), #059669);
      color: #FFF;
      box-shadow: 0 4px 14px rgba(16, 185, 129, 0.25);
    }
    .btn-accent:hover {
      background: linear-gradient(135deg, #059669, #047857);
      transform: translateY(-2px);
      color: #FFF;
    }

    /* Section Base */
    .section-spacing {
      padding: 96px 0;
    }
    .section-header {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 56px;
    }
    .section-tag {
      display: inline-block;
      padding: 4px 12px;
      background-color: rgba(13, 92, 117, 0.08);
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      border-radius: var(--radius-full);
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }
    .section-title {
      font-size: 34px;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* Section 1: Hero (线索获客提问式首屏) */
    .hero-section {
      position: relative;
      background: radial-gradient(circle at 80% 20%, rgba(14, 165, 233, 0.12) 0%, rgba(255, 255, 255, 0) 70%),
                  linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
      padding: 80px 0 100px;
      border-bottom: 1px solid var(--border-color);
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 44px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.25;
      letter-spacing: -0.8px;
      margin-bottom: 20px;
    }
    .hero-content h1 span {
      color: var(--primary);
      position: relative;
    }
    .hero-subtitle {
      font-size: 17px;
      color: var(--text-body);
      line-height: 1.8;
      margin-bottom: 32px;
    }
    .hero-highlight-chips {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 36px;
    }
    .highlight-chip {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 14px;
      background-color: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      font-weight: 500;
      color: var(--text-main);
      box-shadow: var(--shadow-sm);
    }
    .highlight-chip i {
      color: var(--accent);
      font-weight: bold;
    }
    .hero-form-card {
      background: #FFFFFF;
      padding: 36px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-xl);
      position: relative;
    }
    .hero-form-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      border-top-left-radius: var(--radius-lg);
      border-top-right-radius: var(--radius-lg);
    }
    .form-title {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .form-subtitle {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 24px;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      height: 44px;
      padding: 0 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      color: var(--text-main);
      background-color: #FAFAFA;
      transition: var(--transition);
    }
    .form-control:focus {
      outline: none;
      background-color: #FFF;
      border-color: var(--border-focus);
      box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
    }
    .form-helper {
      font-size: 12px;
      color: var(--text-muted);
      margin-top: 14px;
      text-align: center;
    }

    /* Section 2: Metrics Board (KPI 看板) */
    .metrics-section {
      background-color: var(--bg-alt);
      border-bottom: 1px solid var(--border-color);
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .metric-card {
      background-color: #FFF;
      padding: 32px 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }
    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(13, 92, 117, 0.3);
    }
    .metric-card::after {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 3px;
      height: 100%;
      background-color: var(--primary);
    }
    .metric-value {
      font-size: 40px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 8px;
      font-feature-settings: "tnum";
    }
    .metric-unit {
      font-size: 20px;
      font-weight: 600;
      color: var(--secondary);
      margin-left: 2px;
    }
    .metric-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .metric-detail {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* Section 3: Overview 架构总览 */
    .overview-section {
      background-color: #FFFFFF;
    }
    .overview-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .overview-visual {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
    }
    .overview-visual img {
      width: 100%;
      height: 420px;
      object-fit: cover;
    }
    .tech-specs-list {
      list-style: none;
      margin-top: 24px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .spec-item {
      display: flex;
      gap: 16px;
      align-items: flex-start;
    }
    .spec-icon {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background-color: rgba(13, 92, 117, 0.1);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      flex-shrink: 0;
      margin-top: 2px;
    }
    .spec-content h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .spec-content p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Section 4: Advantages 核心优势矩阵 (6宫格) */
    .advantages-section {
      background-color: var(--bg-alt);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .advantage-card {
      background-color: #FFFFFF;
      padding: 32px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .advantage-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: var(--primary-light);
    }
    .advantage-icon-box {
      width: 52px;
      height: 52px;
      background-color: rgba(14, 165, 233, 0.1);
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 22px;
      margin-bottom: 20px;
    }
    .advantage-card h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .advantage-card p {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.6;
    }

    /* Section 5: Products 热门应用与产品矩阵 */
    .products-section {
      background-color: #FFFFFF;
    }
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .product-card {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      background-color: #FFFFFF;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .product-card:hover {
      box-shadow: var(--shadow-xl);
      border-color: rgba(13, 92, 117, 0.3);
      transform: translateY(-5px);
    }
    .product-image {
      height: 220px;
      overflow: hidden;
      position: relative;
    }
    .product-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .product-card:hover .product-image img {
      transform: scale(1.05);
    }
    .product-badge {
      position: absolute;
      top: 14px;
      right: 14px;
      background-color: rgba(8, 27, 38, 0.85);
      color: #FFF;
      font-size: 12px;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: var(--radius-full);
      backdrop-filter: blur(4px);
    }
    .product-body {
      padding: 28px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .product-body h3 {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .product-body p {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 20px;
    }
    .feature-bullets {
      list-style: none;
      margin-bottom: 24px;
      flex-grow: 1;
    }
    .feature-bullets li {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .feature-bullets li::before {
      content: '✓';
      color: var(--accent);
      font-weight: bold;
    }

    /* Section 6: Technology Vision (深色沉浸式) */
    .tech-vision-section {
      background-color: var(--bg-dark);
      color: #FFF;
      position: relative;
    }
    .tech-vision-section .section-title {
      color: #FFF;
    }
    .tech-vision-section .section-desc {
      color: #94A3B8;
    }
    .tech-vision-section .section-tag {
      background-color: rgba(14, 165, 233, 0.2);
      color: var(--secondary);
    }
    .vision-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .vision-points {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .vision-item {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      padding: 24px;
      border-radius: var(--radius-md);
      transition: var(--transition);
    }
    .vision-item:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: var(--secondary);
    }
    .vision-item h4 {
      font-size: 18px;
      font-weight: 700;
      color: #38BDF8;
      margin-bottom: 8px;
    }
    .vision-item p {
      font-size: 14px;
      color: #CBD5E1;
      line-height: 1.6;
    }
    .vision-img-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, 0.5);
    }
    .vision-img-frame img {
      width: 100%;
      height: 440px;
      object-fit: cover;
    }

    /* Section 7: Clinical Benchmark (结果对比) */
    .benchmark-section {
      background-color: var(--bg-alt);
      border-bottom: 1px solid var(--border-color);
    }
    .benchmark-cards {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      margin-top: 40px;
    }
    .benchmark-card {
      background-color: #FFF;
      border-radius: var(--radius-lg);
      padding: 36px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .benchmark-card.legacy {
      border-top: 4px solid #94A3B8;
    }
    .benchmark-card.ai-powered {
      border-top: 4px solid var(--accent);
      background: linear-gradient(180deg, #FFFFFF 0%, rgba(236, 253, 245, 0.3) 100%);
      box-shadow: var(--shadow-md);
    }
    .benchmark-title {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .benchmark-status {
      font-size: 13px;
      padding: 4px 12px;
      border-radius: var(--radius-full);
      font-weight: 600;
    }
    .status-legacy {
      background-color: #F1F5F9;
      color: #64748B;
    }
    .status-ai {
      background-color: var(--accent-soft);
      color: #059669;
    }
    .benchmark-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 16px 0;
      border-bottom: 1px solid var(--border-color);
    }
    .benchmark-row:last-child {
      border-bottom: none;
    }
    .benchmark-label {
      font-size: 14px;
      color: var(--text-body);
      font-weight: 500;
    }
    .benchmark-data {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
    }
    .benchmark-data.highlight {
      color: var(--accent);
      font-size: 18px;
    }

    /* Section 8: Case Studies (落地场景) */
    .cases-section {
      background-color: #FFFFFF;
    }
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 36px;
    }
    .case-card {
      display: flex;
      flex-direction: column;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      background: #FFFFFF;
      box-shadow: var(--shadow-sm);
    }
    .case-header-img {
      height: 240px;
      overflow: hidden;
    }
    .case-header-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-content {
      padding: 32px;
    }
    .case-badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      padding: 4px 10px;
      background-color: rgba(13, 92, 117, 0.08);
      color: var(--primary);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
    }
    .case-content h3 {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .case-content p {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .case-impact {
      background-color: var(--bg-subtle);
      padding: 16px 20px;
      border-radius: var(--radius-md);
      font-size: 13px;
      color: var(--text-main);
      font-weight: 600;
      border-left: 3px solid var(--primary);
    }

    /* Section 9: Milestones (发展里程碑) */
    .milestones-section {
      background-color: var(--bg-alt);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .timeline-container {
      position: relative;
      max-width: 900px;
      margin: 0 auto;
    }
    .timeline-container::before {
      content: '';
      position: absolute;
      top: 0;
      bottom: 0;
      left: 50%;
      width: 2px;
      background-color: var(--border-color);
      transform: translateX(-50%);
    }
    .timeline-item {
      position: relative;
      margin-bottom: 40px;
      width: 50%;
    }
    .timeline-item:nth-child(odd) {
      left: 0;
      padding-right: 48px;
      text-align: right;
    }
    .timeline-item:nth-child(even) {
      left: 50%;
      padding-left: 48px;
      text-align: left;
    }
    .timeline-dot {
      position: absolute;
      top: 16px;
      width: 18px;
      height: 18px;
      border-radius: 50%;
      background-color: #FFF;
      border: 4px solid var(--primary);
      z-index: 2;
    }
    .timeline-item:nth-child(odd) .timeline-dot {
      right: -9px;
    }
    .timeline-item:nth-child(even) .timeline-dot {
      left: -9px;
    }
    .timeline-box {
      background-color: #FFF;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .timeline-date {
      font-size: 13px;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 6px;
    }
    .timeline-box h4 {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .timeline-box p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Section 10: Testimonials (专家评价) */
    .testimonials-section {
      background-color: #FFFFFF;
    }
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testimonial-card {
      background-color: var(--bg-alt);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      box-shadow: var(--shadow-sm);
    }
    .quote-rating {
      color: #F59E0B;
      font-size: 16px;
      margin-bottom: 16px;
      letter-spacing: 2px;
    }
    .quote-text {
      font-size: 15px;
      color: var(--text-body);
      line-height: 1.7;
      font-style: italic;
      margin-bottom: 24px;
      flex-grow: 1;
    }
    .author-info {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-weight: 700;
      font-size: 15px;
      flex-shrink: 0;
    }
    .author-meta h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
    }
    .author-meta p {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* Section 11: News & Insights (科研动态) */
    .news-section {
      background-color: var(--bg-alt);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .news-card {
      background-color: #FFF;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }
    .news-thumbnail {
      height: 180px;
      overflow: hidden;
    }
    .news-thumbnail img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-date {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .news-body h3 {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.4;
      margin-bottom: 12px;
    }
    .news-body p {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* Section 12: Compliance & Security (平台保障) */
    .compliance-section {
      background-color: #FFFFFF;
    }
    .compliance-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .compliance-card {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      text-align: center;
      background-color: var(--bg-alt);
      transition: var(--transition);
    }
    .compliance-card:hover {
      border-color: var(--primary);
      background-color: #FFF;
      box-shadow: var(--shadow-md);
    }
    .compliance-icon {
      width: 56px;
      height: 56px;
      margin: 0 auto 16px;
      border-radius: 50%;
      background-color: rgba(13, 92, 117, 0.1);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      font-weight: bold;
    }
    .compliance-card h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .compliance-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* Section 13: FAQ (快速解答) */
    .faq-section {
      background-color: var(--bg-alt);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .faq-wrapper {
      max-width: 920px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background-color: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-summary {
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      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-arrow {
      font-size: 18px;
      color: var(--primary);
      transition: transform 0.25s ease;
    }
    details[open] .faq-arrow {
      transform: rotate(180deg);
    }
    .faq-content {
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.7;
      border-top: 1px solid var(--bg-subtle);
      margin-top: 8px;
      padding-top: 14px;
    }

    /* Section 14: CTA & Contact Form (底端转化与表单) */
    .cta-contact-section {
      background: linear-gradient(135deg, #081B26 0%, #0D3A4B 100%);
      color: #FFFFFF;
      padding: 90px 0;
    }
    .cta-contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .cta-info h2 {
      font-size: 36px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 20px;
      color: #FFF;
    }
    .cta-info p {
      font-size: 16px;
      color: #CBD5E1;
      line-height: 1.8;
      margin-bottom: 32px;
    }
    .cta-contact-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .cta-contact-list li {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 15px;
      color: #E2E8F0;
    }
    .cta-form-box {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
      color: var(--text-main);
    }
    .cta-form-box h3 {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .cta-form-box p {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 24px;
    }

    /* Footer */
    .site-footer {
      background-color: #050E14;
      color: #94A3B8;
      font-size: 14px;
      padding: 70px 0 30px;
      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: 20px;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-brand p {
      line-height: 1.7;
      font-size: 13px;
      color: #64748B;
    }
    .footer-col h5 {
      font-size: 15px;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 18px;
      position: relative;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: #38BDF8;
      padding-left: 4px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
      color: #64748B;
    }

    /* Responsive Breakpoints */
    @media (max-width: 1024px) {
      .hero-grid, .overview-grid, .vision-grid, .cta-contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .advantages-grid, .products-grid, .testimonials-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .compliance-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .section-spacing {
        padding: 60px 0;
      }
      .section-title {
        font-size: 26px;
      }
      .hero-content h1 {
        font-size: 32px;
      }
      .mobile-toggle {
        display: block;
      }
      .nav-menu {
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background-color: #FFF;
        flex-direction: column;
        align-items: flex-start;
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow-lg);
        border-bottom: 1px solid var(--border-color);
        display: none;
      }
      .nav-menu.active {
        display: flex;
      }
      .nav-cta {
        display: none;
      }
      .metrics-grid, .advantages-grid, .products-grid, .benchmark-cards, .cases-grid, .testimonials-grid, .news-grid, .compliance-grid, .footer-grid {
        grid-template-columns: 1fr;
      }
      .timeline-container::before {
        left: 16px;
      }
      .timeline-item {
        width: 100%;
        left: 0 !important;
        padding-left: 48px !important;
        padding-right: 0 !important;
        text-align: left !important;
      }
      .timeline-item .timeline-dot {
        left: 8px !important;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }