:root {
      --primary-color: #059669;
      --primary-hover: #047857;
      --accent-bright: #10b981;
      --accent-lime: #84cc16;
      --bg-light: #f4fbf7;
      --bg-white: #ffffff;
      --text-main: #064e3b;
      --text-dark: #0f172a;
      --text-muted: #334155;
      --border-color: #d1fae5;
      --border-soft: #e2e8f0;
      --shadow-sm: 0 2px 8px rgba(5, 150, 105, 0.06);
      --shadow-md: 0 10px 25px -5px rgba(5, 150, 105, 0.1), 0 8px 10px -6px rgba(5, 150, 105, 0.05);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 22px;
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * {
      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-light);
      color: var(--text-dark);
      line-height: 1.6;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .site-container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    .section-wrap {
      padding: 70px 0;
      position: relative;
    }
    .section-head {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 45px;
    }
    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background-color: #e6fcf0;
      color: var(--primary-color);
      font-size: 0.85rem;
      font-weight: 600;
      border-radius: 999px;
      border: 1px solid var(--border-color);
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 12px;
      line-height: 1.35;
    }
    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .header-nav {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .nav-left {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .logo-link {
      display: flex;
      align-items: center;
      height: 44px;
    }
    .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }
    .nav-brand-text {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary-color);
      letter-spacing: -0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }
    .nav-link-item {
      padding: 8px 12px;
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--text-dark);
      border-radius: var(--radius-sm);
      transition: var(--transition);
      white-space: nowrap;
    }
    .nav-link-item:hover {
      color: var(--primary-color);
      background-color: #f0fdf4;
    }
    .nav-right {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-emerald {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      background: linear-gradient(135deg, #059669 0%, #10b981 100%);
      color: #ffffff;
      font-size: 0.92rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(5, 150, 105, 0.25);
      transition: var(--transition);
      text-decoration: none;
      white-space: nowrap;
    }
    .btn-emerald:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(5, 150, 105, 0.35);
      background: linear-gradient(135deg, #047857 0%, #059669 100%);
      color: #ffffff;
    }
    .btn-emerald-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      background-color: #ffffff;
      color: var(--primary-color);
      font-size: 0.92rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      border: 1px solid var(--primary-color);
      cursor: pointer;
      transition: var(--transition);
      text-decoration: none;
      white-space: nowrap;
    }
    .btn-emerald-outline:hover {
      background-color: #ecfdf5;
      color: var(--primary-hover);
      border-color: var(--primary-hover);
    }
    .mobile-menu-btn {
      display: none;
      background: transparent;
      border: 1px solid var(--border-color);
      padding: 8px 10px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      color: var(--primary-color);
      font-size: 1.2rem;
    }
    .hero-section {
      padding: 85px 0 65px;
      background: radial-gradient(circle at 10% 20%, rgba(209, 250, 229, 0.8) 0%, rgba(244, 251, 247, 0.9) 70%);
      border-bottom: 1px solid var(--border-color);
      position: relative;
    }
    .hero-container {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background-color: #ffffff;
      border: 1px solid #a7f3d0;
      border-radius: 999px;
      color: var(--primary-color);
      font-size: 0.88rem;
      font-weight: 600;
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
    }
    .hero-badge span.pulse-dot {
      width: 8px;
      height: 8px;
      background-color: var(--accent-bright);
      border-radius: 50%;
      display: inline-block;
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.25);
    }
    .hero-main-title {
      font-size: 2.75rem;
      line-height: 1.25;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 22px;
      letter-spacing: -0.5px;
    }
    .hero-main-title mark {
      background: linear-gradient(120deg, #059669 0%, #10b981 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-sub-text {
      font-size: 1.15rem;
      color: var(--text-muted);
      max-width: 780px;
      margin: 0 auto 36px;
      line-height: 1.65;
    }
    .hero-action-row {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 45px;
    }
    .hero-action-row .btn-official {
      padding: 13px 32px;
      font-size: 1.05rem;
    }
    .stats-dashboard-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 20px;
    }
    .stat-card-tech {
      background-color: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px 18px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .stat-card-tech:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: #6ee7b7;
    }
    .stat-num-val {
      font-size: 1.95rem;
      font-weight: 800;
      color: var(--primary-color);
      margin-bottom: 4px;
      line-height: 1.1;
    }
    .stat-label-text {
      font-size: 0.88rem;
      color: var(--text-muted);
      font-weight: 500;
    }
    .model-ticker-container {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      padding: 22px 0;
    }
    .ticker-lead-title {
      text-align: center;
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 14px;
      font-weight: 600;
    }
    .model-tags-flex {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }
    .model-chip {
      padding: 6px 14px;
      background: #f0fdf4;
      border: 1px solid #bbf7d0;
      border-radius: var(--radius-sm);
      font-size: 0.85rem;
      color: var(--text-main);
      font-weight: 600;
      transition: var(--transition);
    }
    .model-chip:hover {
      background: var(--primary-color);
      color: #ffffff;
      border-color: var(--primary-color);
    }
    .features-card-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }
    .service-card-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .service-card-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #34d399;
    }
    .service-badge {
      display: inline-block;
      align-self: flex-start;
      padding: 3px 10px;
      background: #ecfdf5;
      color: var(--primary-color);
      border-radius: 4px;
      font-size: 0.78rem;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .service-title {
      font-size: 1.22rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }
    .service-summary {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
    }
    .service-action-link {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--primary-color);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .banner-gallery-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 35px;
    }
    .gallery-img-box {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      background: #ffffff;
      box-shadow: var(--shadow-sm);
    }
    .gallery-img-box img {
      width: 100%;
      height: 190px;
      object-fit: cover;
      transition: var(--transition);
    }
    .gallery-img-box:hover img {
      transform: scale(1.03);
    }
    .process-steps-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .process-step-node {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      position: relative;
    }
    .step-badge-num {
      width: 38px;
      height: 38px;
      background: #e6fcf0;
      color: var(--primary-color);
      border: 1px solid #86efac;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
      margin-bottom: 14px;
    }
    .step-head-title {
      font-size: 1.08rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 6px;
    }
    .step-detail-text {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.55;
    }
    .evaluation-card-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }
    .score-summary-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      background: #f0fdf4;
      border: 1px solid #bbf7d0;
      border-radius: var(--radius-md);
      padding: 20px 28px;
      margin-bottom: 30px;
      gap: 16px;
    }
    .score-item-val {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--primary-color);
    }
    .score-item-txt {
      font-size: 0.95rem;
      color: var(--text-dark);
      font-weight: 600;
    }
    .table-container-responsive {
      width: 100%;
      overflow-x: auto;
    }
    .benchmark-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }
    .benchmark-table th,
    .benchmark-table td {
      padding: 16px 18px;
      border-bottom: 1px solid var(--border-soft);
      font-size: 0.92rem;
    }
    .benchmark-table th {
      background: #f8fafc;
      color: var(--text-dark);
      font-weight: 700;
    }
    .benchmark-table td.highlight-col {
      background: #f0fdf4;
      color: var(--primary-color);
      font-weight: 700;
    }
    .cases-grid-layout {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }
    .case-card-panel {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .case-pic-wrapper {
      width: 100%;
      height: 190px;
      background: #f1f5f9;
      overflow: hidden;
    }
    .case-pic-wrapper img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-content-zone {
      padding: 20px;
    }
    .case-cat-pill {
      font-size: 0.78rem;
      font-weight: 700;
      color: var(--primary-color);
      background: #ecfdf5;
      padding: 2px 8px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 8px;
    }
    .case-title-txt {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }
    .case-desc-txt {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.55;
    }
    .reviews-grid-box {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .review-user-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .reviewer-meta-row {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }
    .reviewer-avatar-circle {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #d1fae5;
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
    }
    .reviewer-name-role h4 {
      font-size: 0.98rem;
      font-weight: 700;
      color: var(--text-dark);
    }
    .reviewer-name-role p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }
    .review-body-text {
      font-size: 0.9rem;
      color: var(--text-dark);
      line-height: 1.6;
      margin-bottom: 14px;
    }
    .review-rating-stars {
      color: #eab308;
      font-size: 0.9rem;
    }
    .faq-accordion-group {
      max-width: 880px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-toggle-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .faq-btn-trigger {
      width: 100%;
      padding: 18px 22px;
      text-align: left;
      background: transparent;
      border: none;
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-dark);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
    }
    .faq-btn-trigger:hover {
      background-color: #f0fdf4;
      color: var(--primary-color);
    }
    .faq-icon-arrow {
      font-size: 1.1rem;
      transition: transform 0.2s ease;
      color: var(--primary-color);
    }
    .faq-toggle-item.open .faq-icon-arrow {
      transform: rotate(180deg);
    }
    .faq-panel-content {
      display: none;
      padding: 0 22px 18px;
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
      border-top: 1px solid #f0fdf4;
    }
    .faq-toggle-item.open .faq-panel-content {
      display: block;
    }
    .contact-form-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      align-items: flex-start;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }
    .contact-info-panel h3 {
      font-size: 1.45rem;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 14px;
    }
    .contact-info-panel p {
      font-size: 0.92rem;
      color: var(--text-muted);
      margin-bottom: 24px;
    }
    .contact-card-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .contact-single-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.92rem;
      color: var(--text-dark);
    }
    .contact-single-item strong {
      color: var(--primary-color);
      min-width: 80px;
    }
    .qr-img-box {
      width: 140px;
      height: 140px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 6px;
      background: #ffffff;
      margin-top: 16px;
    }
    .qr-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .form-group-field {
      margin-bottom: 18px;
    }
    .form-label-item {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-dark);
      margin-bottom: 6px;
    }
    .form-control-input,
    .form-control-select,
    .form-control-textarea {
      width: 100%;
      padding: 11px 14px;
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      background: #ffffff;
      color: var(--text-dark);
      outline: none;
      transition: var(--transition);
    }
    .form-control-input:focus,
    .form-control-select:focus,
    .form-control-textarea:focus {
      border-color: var(--primary-color);
      box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.15);
    }
    .articles-links-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
    }
    .articles-list-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
      margin-top: 16px;
    }
    .article-item-anchor {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 10px 14px;
      background: #f8fafc;
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      color: var(--text-dark);
      transition: var(--transition);
      word-break: break-all;
    }
    .article-item-anchor:hover {
      border-color: var(--primary-color);
      color: var(--primary-color);
      background: #f0fdf4;
    }
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 45px 0 25px;
      color: var(--text-dark);
    }
    .footer-content-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 35px;
    }
    .footer-brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary-color);
      margin-bottom: 12px;
    }
    .footer-brief-p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
      max-width: 320px;
      margin-bottom: 14px;
    }
    .footer-col-header {
      font-size: 0.98rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 14px;
    }
    .footer-links-vertical {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-link-url {
      font-size: 0.88rem;
      color: var(--text-muted);
      transition: var(--transition);
    }
    .footer-link-url:hover {
      color: var(--primary-color);
    }
    .friend-links-bottom-box {
      border-top: 1px solid var(--border-soft);
      padding-top: 20px;
      margin-bottom: 20px;
    }
    .friend-links-flex-row {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
      font-size: 0.85rem;
    }
    .friend-links-flex-row a {
      color: var(--text-muted);
      transition: var(--transition);
    }
    .friend-links-flex-row a:hover {
      color: var(--primary-color);
    }
    .footer-copyright-bottom {
      text-align: center;
      font-size: 0.85rem;
      color: var(--text-muted);
      padding-top: 15px;
      border-top: 1px solid var(--border-soft);
    }
    .floating-widget-tools {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 1000;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-tool-btn {
      width: 46px;
      height: 46px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      color: var(--primary-color);
      box-shadow: var(--shadow-md);
      cursor: pointer;
      transition: var(--transition);
    }
    .float-tool-btn:hover {
      background: var(--primary-color);
      color: #ffffff;
    }
    @media (max-width: 1024px) {
      .features-card-grid,
      .cases-grid-layout,
      .reviews-grid-box {
        grid-template-columns: repeat(2, 1fr);
      }
      .banner-gallery-row,
      .process-steps-row,
      .stats-dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-content-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        align-items: flex-start;
        padding: 16px 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-link-item {
        width: 100%;
        padding: 10px 0;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-main-title {
        font-size: 2rem;
      }
      .features-card-grid,
      .cases-grid-layout,
      .reviews-grid-box,
      .banner-gallery-row,
      .process-steps-row,
      .contact-form-layout,
      .articles-list-grid,
      .footer-content-grid {
        grid-template-columns: 1fr;
      }
      .contact-form-layout {
        padding: 24px;
      }
      .score-summary-bar {
        flex-direction: column;
        align-items: flex-start;
      }
    }