:root {
      --primary: #e0245e;
      --primary-hover: #c2185b;
      --accent: #ff4081;
      --accent-soft: #ffe4ec;
      --text-dark: #212529;
      --text-muted: #5f6368;
      --bg-light: #fff5f8;
      --bg-white: #ffffff;
      --border-color: #f8bbd0;
      --border-light: #fce4ec;
      --shadow-sm: 0 4px 12px rgba(224, 36, 94, 0.08);
      --shadow-md: 0 8px 24px rgba(224, 36, 94, 0.12);
      --radius: 12px;
      --radius-sm: 8px;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-stack);
      color: var(--text-dark);
      background-color: var(--bg-light);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    header.site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-light);
      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;
      text-decoration: none;
      gap: 12px;
    }

    .brand-logo img {
      max-height: 44px;
      width: auto;
      object-fit: contain;
    }

    .brand-name {
      font-size: 20px;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.5px;
    }

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

    .nav-links li a {
      color: var(--text-dark);
      text-decoration: none;
      font-size: 14px;
      font-weight: 600;
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      transition: color 0.25s, background-color 0.25s;
    }

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

    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 700;
      border-radius: 50px;
      text-decoration: none;
      cursor: pointer;
      border: 1px solid transparent;
      transition: transform 0.2s, box-shadow 0.2s, background-color 0.2s;
    }

    .btn:active {
      transform: scale(0.98);
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
      color: #fff;
      box-shadow: 0 4px 14px rgba(224, 36, 94, 0.35);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary) 0%, #ad1457 100%);
      box-shadow: 0 6px 18px rgba(224, 36, 94, 0.45);
    }

    .btn-outline {
      border-color: var(--primary);
      color: var(--primary);
      background: #ffffff;
    }

    .btn-outline:hover {
      background: var(--accent-soft);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--primary);
      cursor: pointer;
      padding: 4px;
    }

    .hero-section {
      position: relative;
      padding: 80px 0 60px;
      background: radial-gradient(circle at 80% 20%, rgba(255, 64, 129, 0.15) 0%, transparent 60%),
                  radial-gradient(circle at 10% 80%, rgba(224, 36, 94, 0.12) 0%, transparent 50%),
                  var(--bg-light);
      border-bottom: 1px solid var(--border-light);
      overflow: hidden;
    }

    .hero-content {
      max-width: 900px;
      margin: 0 auto;
      text-align: center;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      background: #ffffff;
      border: 1px solid var(--border-color);
      color: var(--primary);
      font-size: 13px;
      font-weight: 700;
      padding: 6px 16px;
      border-radius: 30px;
      margin-bottom: 24px;
      box-shadow: var(--shadow-sm);
    }

    .hero-title {
      font-size: 42px;
      font-weight: 900;
      line-height: 1.25;
      color: #1a1a1a;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-title span {
      color: var(--primary);
    }

    .hero-desc {
      font-size: 18px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 36px;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }

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

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

    .stat-card {
      background: #ffffff;
      padding: 24px 16px;
      border-radius: var(--radius);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: transform 0.25s, box-shadow 0.25s;
    }

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

    .stat-number {
      font-size: 32px;
      font-weight: 900;
      color: var(--primary);
      margin-bottom: 6px;
      line-height: 1;
    }

    .stat-label {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 600;
    }

    section {
      padding: 72px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 700px;
      margin: 0 auto 48px;
    }

    .section-subtitle {
      font-size: 13px;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary);
      margin-bottom: 8px;
      display: block;
    }

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

    .section-description {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.6;
    }

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

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }

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

    .feature-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
    }

    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-color);
    }

    .feature-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      color: var(--primary);
      background: var(--accent-soft);
      padding: 4px 10px;
      border-radius: 4px;
      margin-bottom: 16px;
    }

    .feature-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 12px;
    }

    .feature-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    .models-cloud {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-light);
      padding: 32px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
      align-items: center;
    }

    .model-badge {
      background: var(--bg-light);
      color: var(--primary);
      border: 1px solid var(--border-color);
      padding: 8px 16px;
      font-size: 13px;
      font-weight: 700;
      border-radius: 30px;
      transition: transform 0.2s, background-color 0.2s, color 0.2s;
    }

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

    .media-card {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-light);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s, box-shadow 0.25s;
    }

    .media-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .media-img-wrap {
      width: 100%;
      background: #f1f1f1;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }

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

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

    .media-body {
      padding: 24px;
    }

    .media-body h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 10px;
    }

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

    .eval-section {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      padding: 40px;
      box-shadow: var(--shadow-md);
      margin-bottom: 32px;
    }

    .eval-top-bar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
      padding-bottom: 24px;
      border-bottom: 1px solid var(--border-light);
      margin-bottom: 28px;
    }

    .eval-score-box {
      display: flex;
      align-items: baseline;
      gap: 8px;
    }

    .score-val {
      font-size: 48px;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
    }

    .score-scale {
      font-size: 16px;
      font-weight: 600;
      color: var(--text-muted);
    }

    .stars-badge {
      background: #fff0f5;
      border: 1px solid var(--accent);
      color: var(--primary);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 14px;
      font-weight: 800;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
    }

    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
      background: #ffffff;
    }

    .custom-table th, .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-light);
    }

    .custom-table th {
      background: var(--accent-soft);
      color: var(--primary);
      font-weight: 700;
    }

    .custom-table tbody tr:hover {
      background: #fffbfc;
    }

    .custom-table .highlight {
      font-weight: 700;
      color: var(--primary);
    }

    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius);
      padding: 24px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-index {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--accent), var(--primary));
      color: #fff;
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      margin-bottom: 16px;
    }

    .step-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .testimonial-card {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-light);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testimonial-quote {
      font-size: 14px;
      color: var(--text-dark);
      line-height: 1.7;
      margin-bottom: 20px;
      position: relative;
    }

    .testimonial-quote::before {
      content: "“";
      font-size: 36px;
      color: var(--border-color);
      line-height: 0;
      vertical-align: -12px;
      margin-right: 4px;
    }

    .author-info {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-light);
      padding-top: 16px;
    }

    .author-avatar-char {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--accent-soft);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 15px;
    }

    .author-meta h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-dark);
    }

    .author-meta p {
      font-size: 12px;
      color: var(--text-muted);
    }

    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: border-color 0.25s;
    }

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

    .faq-question {
      width: 100%;
      text-align: left;
      padding: 18px 24px;
      background: none;
      border: none;
      font-size: 15px;
      font-weight: 700;
      color: var(--text-dark);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
    }

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

    .faq-icon {
      font-size: 18px;
      font-weight: 600;
      color: var(--primary);
      transition: transform 0.25s;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #fffdfd;
      padding: 0 24px;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 0 24px 20px;
    }

    .faq-answer p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

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

    .form-group {
      margin-bottom: 20px;
    }

    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      outline: none;
      background: #ffffff;
      font-family: inherit;
      color: var(--text-dark);
      transition: border-color 0.2s, box-shadow 0.2s;
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(224, 36, 94, 0.15);
    }

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

    .contact-info-card {
      background: #ffffff;
      border: 1px solid var(--border-light);
      border-radius: var(--radius);
      padding: 36px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-bottom: 28px;
    }

    .contact-list li {
      font-size: 14px;
      color: var(--text-dark);
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .contact-list strong {
      color: var(--primary);
    }

    .qr-container {
      text-align: center;
      background: var(--bg-light);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      padding: 20px;
    }

    .qr-container img {
      width: 140px;
      height: 140px;
      display: block;
      margin: 0 auto 10px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      background: #fff;
    }

    .qr-container span {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 600;
    }

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

    .article-tag {
      background: #ffffff;
      border: 1px solid var(--border-light);
      color: var(--text-dark);
      text-decoration: none;
      padding: 8px 16px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 600;
      transition: all 0.2s;
    }

    .article-tag:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: var(--accent-soft);
    }

    footer.site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 56px 0 32px;
      color: var(--text-dark);
    }

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

    .footer-col h4 {
      font-size: 16px;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 18px;
    }

    .footer-col p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 13px;
      transition: color 0.2s;
    }

    .footer-links a:hover {
      color: var(--primary);
    }

    .friend-links-box {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .friend-links-box a {
      font-size: 12px;
      color: var(--text-muted);
      text-decoration: none;
      background: var(--bg-light);
      padding: 4px 10px;
      border-radius: 4px;
      border: 1px solid var(--border-light);
      transition: color 0.2s, border-color 0.2s;
    }

    .friend-links-box a:hover {
      color: var(--primary);
      border-color: var(--primary);
    }

    .footer-bottom {
      border-top: 1px solid var(--border-light);
      padding-top: 24px;
      text-align: center;
      font-size: 13px;
      color: var(--text-muted);
    }

    .float-panel {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--primary);
      color: #ffffff;
      border: none;
      box-shadow: var(--shadow-md);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      transition: transform 0.2s, background-color 0.2s;
      text-decoration: none;
    }

    .float-btn:hover {
      transform: scale(1.1);
      background: var(--primary-hover);
    }

    @media (max-width: 992px) {
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .hero-title {
        font-size: 34px;
      }
    }

    @media (max-width: 768px) {
      .mobile-menu-toggle {
        display: block;
      }
      .nav-links {
        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);
        display: none;
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        display: block;
        padding: 10px 0;
        width: 100%;
      }
      .header-actions .btn-outline {
        display: none;
      }
      .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
      }
      .hero-stats-grid {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 28px;
      }
      .hero-desc {
        font-size: 15px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .eval-top-bar {
        flex-direction: column;
        align-items: flex-start;
      }
    }