:root {
      --primary: #4f46e5;
      --primary-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
      --accent-coral: #f97316;
      --accent-emerald: #10b981;
      --accent-cyan: #06b6d4;
      --accent-amber: #f59e0b;
      --bg-main: #fcfdfe;
      --bg-card: #ffffff;
      --text-dark: #1e293b;
      --text-muted: #64748b;
      --border-color: #e2e8f0;
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 10px 15px -3px rgba(99, 102, 241, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
      --shadow-lg: 0 20px 25px -5px rgba(99, 102, 241, 0.12), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-main);
      color: var(--text-dark);
      line-height: 1.65;
      background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.08) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(236, 72, 153, 0.07) 0px, transparent 50%),
        radial-gradient(at 50% 50%, rgba(6, 182, 212, 0.05) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(245, 158, 11, 0.06) 0px, transparent 50%),
        radial-gradient(at 0% 100%, rgba(16, 185, 129, 0.07) 0px, transparent 50%);
      background-attachment: fixed;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.25s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .site-container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      transition: all 0.3s ease;
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-wrap img {
      max-height: 42px;
      width: auto;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      font-size: 0.93rem;
      font-weight: 500;
      color: var(--text-dark);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      transition: all 0.2s ease;
      white-space: nowrap;
    }
    .nav-links li a:hover {
      color: var(--primary);
      background: rgba(99, 102, 241, 0.08);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: 999px;
      font-weight: 600;
      font-size: 0.95rem;
      cursor: pointer;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      border: 1px solid transparent;
      text-align: center;
    }
    .btn-gradient {
      background: var(--primary-gradient);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
    }
    .btn-gradient:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(99, 102, 241, 0.45);
      color: #ffffff;
    }
    .btn-outline {
      border-color: #cbd5e1;
      background: #ffffff;
      color: var(--text-dark);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      padding: 8px;
      cursor: pointer;
    }
    .mobile-menu-btn span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-dark);
      margin: 5px 0;
      transition: 0.3s;
    }
    .section-padding {
      padding-top: 72px;
      padding-bottom: 72px;
    }
    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 52px auto;
    }
    .badge-pill {
      display: inline-flex;
      align-items: center;
      padding: 6px 16px;
      border-radius: 999px;
      font-size: 0.82rem;
      font-weight: 700;
      letter-spacing: 0.5px;
      text-transform: uppercase;
      margin-bottom: 16px;
    }
    .badge-gradient {
      background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(236, 72, 153, 0.12));
      color: #6366f1;
      border: 1px solid rgba(99, 102, 241, 0.25);
    }
    .badge-amber {
      background: rgba(245, 158, 11, 0.15);
      color: #d97706;
      border: 1px solid rgba(245, 158, 11, 0.3);
    }
    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      color: #0f172a;
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .hero-section {
      padding: 96px 0 72px 0;
      text-align: center;
      position: relative;
    }
    .hero-content {
      max-width: 920px;
      margin: 0 auto;
    }
    .hero-title {
      font-size: 2.65rem;
      font-weight: 900;
      line-height: 1.25;
      color: #0f172a;
      margin-bottom: 24px;
      letter-spacing: -0.5px;
    }
    .hero-subtitle {
      font-size: 1.2rem;
      color: #475569;
      line-height: 1.75;
      margin-bottom: 38px;
    }
    .hero-btn-group {
      display: flex;
      align-items: center;
      justify-content: center;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 48px;
    }
    .hero-metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 24px;
    }
    .metric-card {
      background: #ffffff;
      padding: 24px 20px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(226, 232, 240, 0.9);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }
    .metric-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
    }
    .mc-1::before { background: linear-gradient(90deg, #6366f1, #818cf8); }
    .mc-2::before { background: linear-gradient(90deg, #ec4899, #f43f5e); }
    .mc-3::before { background: linear-gradient(90deg, #10b981, #14b8a6); }
    .mc-4::before { background: linear-gradient(90deg, #f59e0b, #eab308); }
    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .metric-number {
      font-size: 2.2rem;
      font-weight: 800;
      line-height: 1.1;
      margin-bottom: 6px;
      color: #0f172a;
    }
    .metric-label {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 500;
    }
    .card-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .card-grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .colorful-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 28px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      position: relative;
    }
    .colorful-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(99, 102, 241, 0.4);
    }
    .card-tag {
      align-self: flex-start;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 6px;
      margin-bottom: 16px;
      color: #4f46e5;
      background: rgba(99, 102, 241, 0.1);
    }
    .card-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 12px;
    }
    .card-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
      flex-grow: 1;
    }
    .card-feature-list {
      list-style: none;
      margin-top: 16px;
      padding-top: 16px;
      border-top: 1px dashed var(--border-color);
    }
    .card-feature-list li {
      font-size: 0.85rem;
      color: #475569;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .card-feature-list li::before {
      content: "✓";
      color: var(--accent-emerald);
      font-weight: bold;
    }
    .model-tags-wrapper {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 36px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      text-align: center;
    }
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 24px;
    }
    .model-pill {
      font-size: 0.88rem;
      font-weight: 600;
      padding: 8px 18px;
      border-radius: 999px;
      border: 1px solid var(--border-color);
      background: #f8fafc;
      color: #334155;
      transition: all 0.25s ease;
    }
    .model-pill:hover {
      background: var(--primary-gradient);
      color: #ffffff;
      border-color: transparent;
      transform: translateY(-2px);
      box-shadow: 0 4px 10px rgba(99, 102, 241, 0.25);
    }
    .steps-container {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .step-item {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 28px 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      position: relative;
      transition: all 0.3s;
    }
    .step-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .step-indicator {
      width: 44px;
      height: 44px;
      border-radius: 12px;
      background: var(--primary-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.15rem;
      margin-bottom: 20px;
    }
    .step-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 10px;
    }
    .step-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .table-container {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      overflow-x: auto;
    }
    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }
    .comparison-table th, .comparison-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.95rem;
    }
    .comparison-table th {
      background: #f8fafc;
      color: #0f172a;
      font-weight: 700;
    }
    .highlight-col {
      background: rgba(99, 102, 241, 0.03);
      font-weight: 600;
      color: var(--primary);
    }
    .rating-banner {
      background: linear-gradient(135deg, #1e1b4b, #312e81);
      color: #ffffff;
      border-radius: var(--radius-md);
      padding: 30px;
      margin-bottom: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }
    .score-badge {
      display: flex;
      align-items: baseline;
      gap: 8px;
    }
    .score-badge .score-big {
      font-size: 3.5rem;
      font-weight: 900;
      line-height: 1;
      color: #fbbf24;
    }
    .score-badge .score-max {
      font-size: 1.2rem;
      color: #cbd5e1;
    }
    .stars-display {
      color: #fbbf24;
      font-size: 1.4rem;
      letter-spacing: 2px;
      margin-top: 4px;
    }
    .media-card-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .media-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }
    .media-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .media-img-wrap {
      width: 100%;
      height: 210px;
      background: #f1f5f9;
      overflow: hidden;
    }
    .media-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .media-card:hover .media-img-wrap img {
      transform: scale(1.04);
    }
    .media-card-content {
      padding: 22px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      margin-bottom: 14px;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: border-color 0.25s;
    }
    .faq-item:hover {
      border-color: rgba(99, 102, 241, 0.4);
    }
    .faq-header {
      padding: 20px 24px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      font-weight: 700;
      font-size: 1.05rem;
      color: #0f172a;
    }
    .faq-icon {
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: #f1f5f9;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      color: var(--primary);
      transition: transform 0.3s;
      flex-shrink: 0;
    }
    .faq-content {
      padding: 0 24px;
      max-height: 0;
      overflow: hidden;
      transition: all 0.3s ease-out;
      font-size: 0.95rem;
      color: #475569;
      line-height: 1.7;
    }
    .faq-item.active .faq-content {
      padding: 0 24px 22px 24px;
      max-height: 300px;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      background: rgba(99, 102, 241, 0.1);
    }
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 26px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.3s;
    }
    .review-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .review-quote {
      font-size: 0.94rem;
      color: #334155;
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .review-author-meta {
      display: flex;
      align-items: center;
      gap: 14px;
      padding-top: 16px;
      border-top: 1px solid #f1f5f9;
    }
    .avatar-initial {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
      flex-shrink: 0;
    }
    .author-name {
      font-weight: 700;
      font-size: 0.95rem;
      color: #0f172a;
    }
    .author-role {
      font-size: 0.8rem;
      color: var(--text-muted);
    }
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .article-box {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 28px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .article-url-list {
      list-style: none;
      margin-top: 16px;
    }
    .article-url-list li {
      margin-bottom: 12px;
      padding-bottom: 12px;
      border-bottom: 1px dashed var(--border-color);
    }
    .article-url-list li a {
      color: #334155;
      font-size: 0.93rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      transition: color 0.2s;
    }
    .article-url-list li a:hover {
      color: var(--primary);
    }
    .form-wrapper {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 44px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-lg);
      max-width: 820px;
      margin: 0 auto;
    }
    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }
    .form-group-full {
      grid-column: span 2;
    }
    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: #334155;
      margin-bottom: 8px;
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      font-size: 0.95rem;
      background: #f8fafc;
      color: var(--text-dark);
      transition: all 0.2s;
    }
    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
    }
    textarea.form-control {
      min-height: 120px;
      resize: vertical;
    }
    .agent-box {
      background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), rgba(236, 72, 153, 0.05));
      border: 1px solid rgba(99, 102, 241, 0.2);
      border-radius: var(--radius-lg);
      padding: 40px;
      margin-top: 36px;
    }
    .agent-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 24px;
    }
    .agent-item {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }
    .contact-card-group {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-bottom: 44px;
    }
    .contact-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px 20px;
      border: 1px solid var(--border-color);
      text-align: center;
      box-shadow: var(--shadow-sm);
    }
    .contact-card .contact-val {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--primary);
      margin-top: 6px;
      word-break: break-all;
    }
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding-top: 60px;
      padding-bottom: 30px;
    }
    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 36px;
      padding-bottom: 40px;
      border-bottom: 1px solid var(--border-color);
    }
    .footer-col h4 {
      font-size: 1rem;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 18px;
    }
    .footer-col p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .footer-links-list {
      list-style: none;
    }
    .footer-links-list li {
      margin-bottom: 10px;
    }
    .footer-links-list li a {
      font-size: 0.88rem;
      color: #64748b;
    }
    .footer-links-list li a:hover {
      color: var(--primary);
    }
    .footer-qr-wrap {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .qr-box {
      width: 96px;
      height: 96px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      padding: 4px;
      background: #ffffff;
    }
    .friendship-links {
      padding-top: 24px;
      padding-bottom: 24px;
      border-bottom: 1px solid var(--border-color);
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
      font-size: 0.88rem;
    }
    .friendship-links a {
      color: #64748b;
      background: #f8fafc;
      padding: 4px 12px;
      border-radius: 6px;
      border: 1px solid var(--border-color);
      transition: all 0.2s;
    }
    .friendship-links a:hover {
      color: var(--primary);
      border-color: var(--primary);
    }
    .footer-bottom {
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: #94a3b8;
    }
    .floating-widget {
      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: #ffffff;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      font-weight: bold;
      color: var(--primary);
      transition: all 0.25s;
    }
    .float-btn:hover {
      transform: scale(1.08);
      background: var(--primary);
      color: #ffffff;
    }
    .qr-modal {
      position: absolute;
      right: 60px;
      bottom: 0;
      width: 170px;
      background: #ffffff;
      padding: 12px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
      display: none;
      text-align: center;
    }
    .qr-modal span {
      display: block;
      font-size: 0.78rem;
      color: var(--text-muted);
      margin-top: 6px;
    }
    .float-qr-wrap:hover .qr-modal {
      display: block;
    }
    @media (max-width: 1024px) {
      .card-grid-3, .steps-container, .media-card-grid, .reviews-grid, .agent-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .card-grid-4, .hero-metrics-grid, .contact-card-group {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .mobile-menu-btn {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        align-items: flex-start;
        padding: 16px 24px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        display: block;
        padding: 10px 0;
        width: 100%;
      }
      .nav-actions .btn-outline {
        display: none;
      }
      .hero-title {
        font-size: 1.95rem;
      }
      .hero-subtitle {
        font-size: 1.02rem;
      }
      .section-title {
        font-size: 1.65rem;
      }
      .card-grid-3, .card-grid-4, .steps-container, .media-card-grid, .reviews-grid, .agent-grid, .articles-grid, .hero-metrics-grid, .contact-card-group {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group-full {
        grid-column: span 1;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
      .rating-banner {
        flex-direction: column;
        text-align: center;
      }
    }