:root {
      --primary: #0ca678;
      --primary-dark: #099268;
      --primary-light: #e6fcf5;
      --primary-border: #c3fae8;
      --accent-mint: #20c997;
      --text-main: #212529;
      --text-muted: #495057;
      --text-light: #868e96;
      --bg-page: #f8faf9;
      --bg-card: #ffffff;
      --card-border: #e9ecef;
      --shadow-sm: 0 2px 8px rgba(12, 166, 120, 0.06);
      --shadow-md: 0 8px 24px rgba(12, 166, 120, 0.08);
      --shadow-lg: 0 16px 36px rgba(12, 166, 120, 0.12);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --container-width: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-page);
      line-height: 1.6;
    }

    body {
      background-color: var(--bg-page);
      min-width: 320px;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease, opacity 0.2s ease;
    }

    .container {
      width: 100%;
      max-width: var(--container-width);
      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, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--primary-border);
      transition: all 0.3s ease;
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .brand-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .brand-logo-wrap {
      max-width: 130px;
      display: flex;
      align-items: center;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }

    .nav-links li a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 12px;
      display: inline-block;
      border-radius: var(--radius-sm);
      transition: all 0.25s ease;
    }

    .nav-links li a:hover {
      color: var(--primary-dark);
      background-color: var(--primary-light);
    }

    .nav-action-btn {
      background-color: var(--primary);
      color: #ffffff !important;
      padding: 9px 20px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 14px;
      display: inline-flex;
      align-items: center;
      box-shadow: 0 4px 12px rgba(12, 166, 120, 0.2);
    }

    .nav-action-btn:hover {
      background-color: var(--primary-dark);
      transform: translateY(-1px);
    }

    .menu-toggle {
      display: none;
      flex-direction: column;
      justify-content: space-between;
      width: 26px;
      height: 20px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 0;
    }

    .menu-toggle span {
      display: block;
      height: 2px;
      width: 100%;
      background-color: var(--text-main);
      border-radius: 2px;
      transition: all 0.3s;
    }

    .hero-section {
      padding: 80px 0 60px 0;
      background: radial-gradient(circle at 50% 20%, #e6fcf5 0%, #f8faf9 70%);
      text-align: center;
      border-bottom: 1px solid var(--primary-border);
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background-color: #ffffff;
      border: 1px solid var(--primary-border);
      border-radius: 20px;
      font-size: 13px;
      color: var(--primary-dark);
      font-weight: 600;
      margin-bottom: 24px;
      box-shadow: var(--shadow-sm);
    }

    .hero-title {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-desc {
      font-size: 18px;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto 36px auto;
      line-height: 1.7;
    }

    .hero-btn-group {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }

    .btn-main-official {
      background-color: var(--primary);
      color: #ffffff;
      padding: 14px 34px;
      font-size: 16px;
      font-weight: 700;
      border-radius: var(--radius-sm);
      box-shadow: 0 8px 20px rgba(12, 166, 120, 0.25);
      transition: all 0.25s ease;
    }

    .btn-main-official:hover {
      background-color: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 10px 24px rgba(12, 166, 120, 0.35);
    }

    .btn-sub-action {
      background-color: #ffffff;
      color: var(--text-main);
      border: 1px solid #ced4da;
      padding: 14px 28px;
      font-size: 16px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      transition: all 0.25s ease;
    }

    .btn-sub-action:hover {
      background-color: var(--primary-light);
      border-color: var(--primary);
      color: var(--primary-dark);
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      max-width: 960px;
      margin: 0 auto;
    }

    .hero-stat-card {
      background-color: #ffffff;
      padding: 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--primary-border);
      box-shadow: var(--shadow-sm);
      text-align: left;
    }

    .hero-stat-card .stat-label {
      font-size: 13px;
      color: var(--text-light);
      margin-bottom: 6px;
    }

    .hero-stat-card .stat-val {
      font-size: 20px;
      font-weight: 700;
      color: var(--primary-dark);
    }

    .section-padding {
      padding: 72px 0;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 48px auto;
    }

    .section-eyebrow {
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      color: var(--primary);
      margin-bottom: 8px;
      letter-spacing: 1px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .section-subtitle {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .grid-col-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .grid-col-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .grid-col-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .content-card {
      background-color: var(--bg-card);
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 28px;
      transition: all 0.3s ease;
      box-shadow: var(--shadow-sm);
      position: relative;
    }

    .content-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary-border);
    }

    .card-tag {
      display: inline-block;
      font-size: 12px;
      padding: 3px 10px;
      background-color: var(--primary-light);
      color: var(--primary-dark);
      border-radius: 4px;
      margin-bottom: 14px;
      font-weight: 600;
    }

    .card-title {
      font-size: 19px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .card-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .models-cloud-wrapper {
      background-color: #ffffff;
      padding: 36px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--primary-border);
      box-shadow: var(--shadow-sm);
    }

    .model-tags-flex {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 20px;
    }

    .model-pill {
      background-color: var(--bg-page);
      border: 1px solid #dee2e6;
      padding: 8px 16px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-muted);
      transition: all 0.2s ease;
    }

    .model-pill:hover {
      background-color: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
      transform: scale(1.05);
    }

    .feature-step-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      counter-reset: flow-step;
    }

    .step-item {
      background-color: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }

    .step-number {
      font-size: 28px;
      font-weight: 800;
      color: var(--primary);
      opacity: 0.8;
      margin-bottom: 12px;
    }

    .step-title {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    .review-score-hero {
      background: linear-gradient(135deg, #e6fcf5 0%, #ffffff 100%);
      border: 2px solid var(--primary-border);
      border-radius: var(--radius-lg);
      padding: 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 32px;
      box-shadow: var(--shadow-sm);
    }

    .score-left h3 {
      font-size: 22px;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .score-left p {
      font-size: 14px;
      color: var(--text-muted);
    }

    .score-badge-area {
      text-align: right;
    }

    .score-stars {
      font-size: 24px;
      color: #fab005;
      margin-bottom: 4px;
    }

    .score-number {
      font-size: 32px;
      font-weight: 900;
      color: var(--primary-dark);
    }

    .score-max {
      font-size: 16px;
      color: var(--text-light);
      font-weight: 500;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      background-color: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--card-border);
      box-shadow: var(--shadow-sm);
    }

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }

    .comparison-table th,
    .comparison-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--card-border);
      font-size: 14px;
    }

    .comparison-table th {
      background-color: var(--bg-page);
      font-weight: 700;
      color: var(--text-main);
    }

    .comparison-table tr:last-child td {
      border-bottom: none;
    }

    .col-highlight {
      background-color: rgba(12, 166, 120, 0.04);
      color: var(--primary-dark);
      font-weight: 600;
    }

    .case-card-inner {
      background-color: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .case-media-wrap {
      width: 100%;
      background-color: #e9ecef;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }

    .case-media-wrap img {
      width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
      transition: transform 0.3s ease;
    }

    .case-card-inner:hover .case-media-wrap img {
      transform: scale(1.03);
    }

    .case-content {
      padding: 20px;
    }

    .user-comment-card {
      background-color: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }

    .user-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 12px;
    }

    .user-avatar-circle {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background-color: var(--primary-light);
      color: var(--primary-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
    }

    .user-info-name {
      font-size: 15px;
      font-weight: 700;
    }

    .user-info-role {
      font-size: 12px;
      color: var(--text-light);
    }

    .user-body-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background-color: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all 0.2s ease;
    }

    .faq-question {
      width: 100%;
      text-align: left;
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-main);
      background: none;
      border: none;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .faq-question:hover {
      color: var(--primary-dark);
    }

    .faq-icon {
      font-size: 18px;
      font-weight: bold;
      transition: transform 0.2s ease;
    }

    .faq-answer {
      display: none;
      padding: 0 24px 20px 24px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      border-top: 1px solid #f1f3f5;
      margin-top: -4px;
      padding-top: 16px;
    }

    .faq-item.active {
      border-color: var(--primary);
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--primary);
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    .form-wrapper {
      background-color: #ffffff;
      border: 1px solid var(--primary-border);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }

    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 18px;
    }

    .form-full {
      grid-column: span 2;
    }

    .form-group label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid #ced4da;
      border-radius: var(--radius-sm);
      font-size: 14px;
      outline: none;
      transition: border-color 0.2s ease;
      background-color: #fafbfc;
    }

    .form-control:focus {
      border-color: var(--primary);
      background-color: #ffffff;
    }

    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }

    .btn-submit {
      background-color: var(--primary);
      color: #ffffff;
      border: none;
      padding: 14px 28px;
      font-size: 15px;
      font-weight: 700;
      border-radius: var(--radius-sm);
      cursor: pointer;
      width: 100%;
      transition: background-color 0.25s ease;
    }

    .btn-submit:hover {
      background-color: var(--primary-dark);
    }

    .banner-container {
      border-radius: var(--radius-lg);
      overflow: hidden;
      margin: 40px 0;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--card-border);
    }

    .banner-container img {
      width: 100%;
      height: auto;
      display: block;
    }

    .article-links-box {
      background-color: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-md);
      padding: 24px;
      margin-top: 24px;
    }

    .article-links-flex {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 12px;
    }

    .article-pill {
      background-color: var(--bg-page);
      border: 1px solid #e9ecef;
      padding: 6px 14px;
      border-radius: var(--radius-sm);
      font-size: 13px;
      color: var(--text-muted);
      transition: all 0.2s ease;
    }

    .article-pill:hover {
      background-color: var(--primary-light);
      color: var(--primary-dark);
      border-color: var(--primary-border);
    }

    .site-footer {
      background-color: #ffffff;
      border-top: 1px solid var(--primary-border);
      padding: 56px 0 24px 0;
      margin-top: 60px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 18px;
    }

    .footer-col ul {
      list-style: none;
    }

    .footer-col ul li {
      margin-bottom: 10px;
    }

    .footer-col ul li a {
      font-size: 14px;
      color: var(--text-muted);
    }

    .footer-col ul li a:hover {
      color: var(--primary);
    }

    .footer-contact-item {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .footer-qr {
      width: 100px;
      height: 100px;
      border: 1px solid #dee2e6;
      border-radius: var(--radius-sm);
      overflow: hidden;
      margin-top: 10px;
    }

    .footer-qr img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .friendly-links-wrap {
      border-top: 1px solid #e9ecef;
      padding-top: 24px;
      margin-bottom: 24px;
    }

    .friendly-title {
      font-size: 13px;
      font-weight: 700;
      color: var(--text-muted);
      margin-bottom: 12px;
    }

    .friendly-list {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
    }

    .friendly-list a {
      color: var(--text-light);
    }

    .friendly-list a:hover {
      color: var(--primary);
    }

    .footer-bottom {
      border-top: 1px solid #f1f3f5;
      padding-top: 20px;
      text-align: center;
      font-size: 13px;
      color: var(--text-light);
    }

    .floating-kefu-btn {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 999;
      background-color: #ffffff;
      border: 1px solid var(--primary-border);
      border-radius: 30px;
      padding: 8px 16px 8px 10px;
      box-shadow: var(--shadow-lg);
      display: flex;
      align-items: center;
      gap: 8px;
      cursor: pointer;
      transition: transform 0.2s ease;
    }

    .floating-kefu-btn:hover {
      transform: translateY(-3px);
    }

    .floating-kefu-icon {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background-color: var(--primary);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: bold;
    }

    .floating-kefu-text {
      font-size: 13px;
      font-weight: 700;
      color: var(--text-main);
    }

    @media (max-width: 992px) {
      .grid-col-3, .feature-step-row, .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-col-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .nav-links {
        display: none;
      }
      .menu-toggle {
        display: flex;
      }
      .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background-color: #ffffff;
        border-bottom: 1px solid var(--primary-border);
        padding: 20px;
        box-shadow: var(--shadow-md);
      }
      .nav-links.active li {
        width: 100%;
      }
      .nav-links.active li a {
        width: 100%;
        padding: 12px 16px;
      }
    }

    @media (max-width: 640px) {
      .hero-title {
        font-size: 28px;
      }
      .section-title {
        font-size: 24px;
      }
      .grid-col-2, .grid-col-3, .grid-col-4, .feature-step-row, .hero-stats-grid, .form-grid {
        grid-template-columns: 1fr;
      }
      .form-full {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .review-score-hero {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
      }
      .score-badge-area {
        text-align: left;
      }
    }