:root {
      --primary-color: #0d9488;
      --primary-dark: #0f766e;
      --primary-light: #14b8a6;
      --primary-soft: #f0fdfa;
      --accent-cyan: #06b6d4;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --border-color: #e2e8f0;
      --border-highlight: #ccfbf1;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(13, 148, 136, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --shadow-lg: 0 10px 15px -3px rgba(13, 148, 136, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
      --shadow-hover: 0 20px 25px -5px rgba(13, 148, 136, 0.15), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }
    .brand-logo-wrap {
      max-width: 140px;
      display: flex;
      align-items: center;
    }
    .brand-tag {
      font-size: 13px;
      color: var(--primary-dark);
      background: var(--primary-soft);
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 600;
      border: 1px solid var(--border-highlight);
    }
    .nav-menu {
      display: flex;
      align-items: center;
    }
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0;
    }
    .nav-links a {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-main);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      display: block;
      white-space: nowrap;
    }
    .nav-links a:hover {
      color: var(--primary-color);
      background-color: var(--primary-soft);
    }
    .header-action-group {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 600;
      padding: 9px 20px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      text-align: center;
      white-space: nowrap;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
      color: #ffffff;
      box-shadow: 0 4px 10px rgba(13, 148, 136, 0.25);
    }
    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
      transform: translateY(-1px);
      box-shadow: 0 6px 14px rgba(13, 148, 136, 0.35);
      color: #ffffff;
    }
    .btn-secondary {
      background: #ffffff;
      color: var(--primary-dark);
      border: 1px solid #99f6e4;
    }
    .btn-secondary:hover {
      background: var(--primary-soft);
      border-color: var(--primary-color);
      transform: translateY(-1px);
    }
    .btn-lg {
      padding: 13px 28px;
      font-size: 16px;
      border-radius: var(--radius-md);
    }
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
      color: var(--text-main);
    }
    .mobile-menu-toggle span {
      display: block;
      width: 22px;
      height: 2px;
      background-color: var(--text-main);
      margin: 5px 0;
      transition: var(--transition);
    }
    .hero-section {
      background: linear-gradient(180deg, #f0fdfa 0%, #f8fafc 100%);
      padding: 70px 0 60px;
      border-bottom: 1px solid var(--border-color);
      position: relative;
    }
    .hero-content {
      max-width: 920px;
      margin: 0 auto;
      text-align: center;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background-color: #ffffff;
      border: 1px solid #99f6e4;
      border-radius: 9999px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary-dark);
      margin-bottom: 20px;
      box-shadow: var(--shadow-sm);
    }
    .hero-badge .pulse-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: var(--primary-light);
      box-shadow: 0 0 0 4px rgba(20, 184, 166, 0.2);
    }
    .hero-title {
      font-size: 38px;
      line-height: 1.25;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }
    .hero-subtitle {
      font-size: 18px;
      color: var(--text-muted);
      margin-bottom: 32px;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }
    .hero-cta-group {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 16px;
      margin-bottom: 45px;
      flex-wrap: wrap;
    }
    .hero-metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      max-width: 980px;
      margin: 0 auto;
    }
    .metric-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 18px 12px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .metric-card:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary-light);
    }
    .metric-num {
      font-size: 26px;
      font-weight: 800;
      color: var(--primary-dark);
      margin-bottom: 4px;
    }
    .metric-label {
      font-size: 13px;
      color: var(--text-light);
      font-weight: 500;
    }
    .model-ticker {
      background: #ffffff;
      border-bottom: 1px solid var(--border-color);
      padding: 16px 0;
      overflow: hidden;
    }
    .ticker-inner {
      display: flex;
      align-items: center;
      gap: 16px;
      white-space: nowrap;
    }
    .ticker-label {
      font-size: 13px;
      font-weight: 700;
      color: var(--primary-dark);
      background: var(--primary-soft);
      padding: 4px 10px;
      border-radius: 4px;
      flex-shrink: 0;
    }
    .model-tags-stream {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
    }
    .model-pill {
      font-size: 12px;
      background: #f1f5f9;
      color: var(--text-muted);
      padding: 3px 10px;
      border-radius: 4px;
      border: 1px solid var(--border-color);
    }
    .section-wrap {
      padding: 70px 0;
      border-bottom: 1px solid var(--border-color);
      background-color: var(--bg-page);
    }
    .section-wrap.alt-bg {
      background-color: #ffffff;
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 45px;
    }
    .section-pretitle {
      font-size: 13px;
      font-weight: 700;
      color: var(--primary-dark);
      letter-spacing: 1px;
      text-transform: uppercase;
      margin-bottom: 8px;
    }
    .section-title {
      font-size: 28px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
    }
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: #99f6e4;
    }
    .service-icon-box {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      background: var(--primary-soft);
      color: var(--primary-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 16px;
      border: 1px solid var(--border-highlight);
    }
    .service-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }
    .service-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .service-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }
    .service-tag {
      font-size: 12px;
      background: #f8fafc;
      color: var(--primary-dark);
      padding: 2px 8px;
      border-radius: 4px;
      border: 1px solid #e2e8f0;
    }
    .rating-banner {
      background: linear-gradient(135deg, #0f766e 0%, #0d9488 100%);
      color: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px 32px;
      margin-bottom: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }
    .rating-title-group h3 {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .rating-title-group p {
      font-size: 14px;
      opacity: 0.9;
    }
    .rating-score-box {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .score-stars {
      color: #facc15;
      font-size: 22px;
      letter-spacing: 2px;
    }
    .score-badge {
      background: rgba(255, 255, 255, 0.15);
      border: 1px solid rgba(255, 255, 255, 0.3);
      padding: 8px 18px;
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 700;
    }
    .table-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 760px;
    }
    .custom-table th, .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }
    .custom-table th {
      background-color: #f8fafc;
      color: var(--text-main);
      font-weight: 700;
    }
    .custom-table tr:last-child td {
      border-bottom: none;
    }
    .custom-table tr:hover td {
      background-color: #f0fdfa;
    }
    .col-highlight {
      background-color: rgba(240, 253, 250, 0.5);
      font-weight: 600;
      color: var(--primary-dark);
    }
    .status-check {
      color: var(--primary-color);
      font-weight: 700;
    }
    .step-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }
    .step-badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 800;
      color: var(--primary-color);
      background: var(--primary-soft);
      padding: 2px 8px;
      border-radius: 4px;
      margin-bottom: 12px;
    }
    .step-card h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .step-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }
    .media-showcase-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
      margin-bottom: 30px;
      align-items: center;
    }
    .media-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .media-card .img-wrapper {
      position: relative;
      background: #f1f5f9;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }
    .media-card .info-wrapper {
      padding: 16px 20px;
    }
    .media-card h3 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .media-card p {
      font-size: 13px;
      color: var(--text-muted);
    }
    .split-two-col {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
      align-items: start;
    }
    .comments-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .comment-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .comment-card:hover {
      border-color: #99f6e4;
      box-shadow: var(--shadow-md);
    }
    .comment-quote {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      position: relative;
    }
    .comment-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 12px;
    }
    .author-avatar {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: var(--primary-soft);
      color: var(--primary-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 700;
      border: 1px solid var(--border-highlight);
    }
    .author-info h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }
    .author-info p {
      font-size: 12px;
      color: var(--text-light);
    }
    .faq-list {
      max-width: 880px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item.active {
      border-color: #99f6e4;
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      padding: 18px 22px;
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
    }
    .faq-question:hover {
      color: var(--primary-color);
    }
    .faq-icon {
      font-size: 18px;
      font-weight: 400;
      color: var(--text-light);
      transition: transform 0.3s;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--primary-color);
    }
    .faq-answer {
      display: none;
      padding: 0 22px 18px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      border-top: 1px solid transparent;
    }
    .faq-item.active .faq-answer {
      display: block;
      border-top-color: #f8fafc;
    }
    .contact-form-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-md);
    }
    .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%;
      padding: 10px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      color: var(--text-main);
      outline: none;
      transition: var(--transition);
      background-color: #f8fafc;
    }
    .form-control:focus {
      border-color: var(--primary-color);
      background-color: #ffffff;
      box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.1);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }
    .contact-info-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      padding: 16px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
    }
    .contact-item-icon {
      width: 36px;
      height: 36px;
      border-radius: var(--radius-sm);
      background: var(--primary-soft);
      color: var(--primary-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
      flex-shrink: 0;
    }
    .contact-item-body h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 2px;
    }
    .contact-item-body p, .contact-item-body a {
      font-size: 13px;
      color: var(--text-muted);
    }
    .qr-container {
      text-align: center;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
    }
    .qr-wrapper {
      max-width: 160px;
      margin: 0 auto 12px;
      border-radius: var(--radius-sm);
      overflow: hidden;
      border: 1px solid #e2e8f0;
      padding: 6px;
      background: #ffffff;
    }
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .article-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .article-card:hover {
      border-color: #99f6e4;
      box-shadow: var(--shadow-sm);
      transform: translateY(-2px);
    }
    .article-meta {
      font-size: 12px;
      color: var(--primary-dark);
      margin-bottom: 8px;
      font-weight: 600;
    }
    .article-card h3 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .article-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
      margin-bottom: 14px;
    }
    .read-more-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary-color);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .read-more-link:hover {
      color: var(--primary-dark);
      text-decoration: underline;
    }
    .site-footer {
      background-color: #0f172a;
      color: #94a3b8;
      padding: 60px 0 24px;
      border-top: 1px solid #1e293b;
      font-size: 13px;
    }
    .footer-top-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-col h4 {
      font-size: 15px;
      font-weight: 700;
      color: #f8fafc;
      margin-bottom: 16px;
    }
    .footer-col p {
      line-height: 1.6;
      margin-bottom: 12px;
    }
    .footer-col ul {
      list-style: none;
    }
    .footer-col ul li {
      margin-bottom: 8px;
    }
    .footer-col ul li a {
      color: #94a3b8;
    }
    .footer-col ul li a:hover {
      color: #2dd4bf;
    }
    .friend-links-box {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      margin-bottom: 24px;
    }
    .friend-links-title {
      font-size: 13px;
      font-weight: 600;
      color: #cbd5e1;
      margin-bottom: 12px;
    }
    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }
    .friend-links-list a {
      color: #94a3b8;
      font-size: 13px;
    }
    .friend-links-list a:hover {
      color: #2dd4bf;
    }
    .footer-bottom-bar {
      border-top: 1px solid #1e293b;
      padding-top: 20px;
      text-align: center;
      color: #64748b;
      font-size: 12px;
    }
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 999;
    }
    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #ffffff;
      color: var(--primary-dark);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-lg);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      cursor: pointer;
      transition: var(--transition);
    }
    .float-btn:hover {
      background: var(--primary-color);
      color: #ffffff;
      transform: translateY(-2px);
    }
    @media (max-width: 992px) {
      .services-grid, .comments-grid, .articles-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .step-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .media-showcase-grid {
        grid-template-columns: 1fr;
      }
      .footer-top-grid {
        grid-template-columns: 1fr 1fr;
      }
      .split-two-col {
        grid-template-columns: 1fr;
      }
    }
    @media (max-width: 768px) {
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 1px solid var(--border-color);
        padding: 20px;
        box-shadow: var(--shadow-lg);
      }
      .nav-menu.open {
        display: block;
      }
      .nav-links {
        flex-direction: column;
        align-items: stretch;
      }
      .nav-links a {
        padding: 10px 0;
        border-bottom: 1px solid #f1f5f9;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .hero-title {
        font-size: 26px;
      }
      .hero-subtitle {
        font-size: 15px;
      }
      .services-grid, .comments-grid, .articles-grid, .step-grid {
        grid-template-columns: 1fr;
      }
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
      .header-action-group .btn-secondary {
        display: none;
      }
    }