:root {
      --bg-dark: #090814;
      --bg-card: rgba(22, 17, 43, 0.7);
      --bg-card-border: rgba(236, 72, 153, 0.25);
      --primary-pink: #ff2a8d;
      --primary-purple: #9333ea;
      --accent-cyan: #06b6d4;
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
      --text-light: #cbd5e1;
      --gradient-brand: linear-gradient(135deg, #ff2a8d 0%, #9333ea 100%);
      --gradient-border: linear-gradient(135deg, rgba(255, 42, 141, 0.5), rgba(147, 51, 234, 0.2));
      --glow-pink: 0 0 25px rgba(255, 42, 141, 0.35);
      --glow-purple: 0 0 25px rgba(147, 51, 234, 0.35);
      --site-width: 1240px;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-dark);
      background-image: 
        radial-gradient(circle at 15% 15%, rgba(147, 51, 234, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 85% 60%, rgba(255, 42, 141, 0.12) 0%, transparent 40%),
        radial-gradient(circle at 50% 90%, rgba(6, 182, 212, 0.08) 0%, transparent 50%);
      background-attachment: fixed;
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
      font-size: 15px;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.3s ease;
    }

    img {
      display: block;
      max-width: 100%;
      height: auto;
    }

    .container {
      width: 100%;
      max-width: var(--site-width);
      margin: 0 auto;
      padding: 0 20px;
    }

    header.site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(9, 8, 20, 0.88);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(255, 42, 141, 0.2);
    }

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

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

    .brand-wrap .ai-page-logo {
      height: 40px;
      width: auto;
      filter: drop-shadow(0 0 8px rgba(255, 42, 141, 0.4));
    }

    .brand-text {
      font-size: 20px;
      font-weight: 800;
      background: linear-gradient(90deg, #ff2a8d, #c084fc);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: 0.5px;
    }

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

    .nav-links li a {
      font-size: 14px;
      color: var(--text-light);
      padding: 8px 12px;
      font-weight: 500;
      border-radius: 6px;
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: #fff;
      text-shadow: 0 0 10px rgba(255, 42, 141, 0.8);
      background: rgba(255, 42, 141, 0.1);
    }

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

    .mobile-menu-toggle {
      display: none;
      flex-direction: column;
      justify-content: center;
      gap: 5px;
      width: 32px;
      height: 32px;
      background: none;
      border: none;
      cursor: pointer;
    }

    .mobile-menu-toggle span {
      display: block;
      height: 2px;
      width: 100%;
      background: #ff2a8d;
      border-radius: 2px;
      transition: 0.3s;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 600;
      border-radius: 8px;
      cursor: pointer;
      transition: all 0.3s ease;
      text-align: center;
    }

    .btn-primary {
      background: var(--gradient-brand);
      color: #fff;
      box-shadow: 0 4px 18px rgba(255, 42, 141, 0.4);
      border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .btn-primary:hover {
      box-shadow: 0 6px 26px rgba(255, 42, 141, 0.7);
      transform: translateY(-2px);
    }

    .btn-outline {
      background: rgba(255, 255, 255, 0.05);
      color: #fff;
      border: 1px solid rgba(255, 42, 141, 0.4);
    }

    .btn-outline:hover {
      border-color: #ff2a8d;
      box-shadow: var(--glow-pink);
      transform: translateY(-2px);
    }

    .hero-section {
      padding: 90px 0 80px;
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid rgba(147, 51, 234, 0.2);
    }

    .hero-content {
      text-align: center;
      max-width: 960px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-block;
      padding: 6px 18px;
      border-radius: 30px;
      font-size: 13px;
      font-weight: 600;
      color: #ff2a8d;
      background: rgba(255, 42, 141, 0.12);
      border: 1px solid rgba(255, 42, 141, 0.4);
      margin-bottom: 24px;
      box-shadow: 0 0 15px rgba(255, 42, 141, 0.2);
    }

    .hero-title {
      font-size: 40px;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      color: #ffffff;
      letter-spacing: -0.5px;
    }

    .hero-title span {
      background: linear-gradient(135deg, #ff2a8d, #c084fc, #06b6d4);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-subtitle {
      font-size: 17px;
      color: var(--text-light);
      margin-bottom: 36px;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
      line-height: 1.7;
    }

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

    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 40px;
    }

    .metric-card {
      background: rgba(22, 17, 43, 0.5);
      border: 1px solid rgba(255, 42, 141, 0.2);
      padding: 20px;
      border-radius: 12px;
      backdrop-filter: blur(10px);
      transition: 0.3s;
    }

    .metric-card:hover {
      border-color: #ff2a8d;
      box-shadow: var(--glow-pink);
      transform: translateY(-3px);
    }

    .metric-num {
      font-size: 30px;
      font-weight: 800;
      color: #fff;
      background: linear-gradient(90deg, #ff2a8d, #c084fc);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 4px;
    }

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

    section {
      padding: 80px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px;
    }

    .section-header h2 {
      font-size: 32px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 14px;
    }

    .section-header p {
      font-size: 15px;
      color: var(--text-muted);
    }

    .card {
      background: var(--bg-card);
      border: 1px solid var(--bg-card-border);
      border-radius: 14px;
      padding: 28px;
      transition: all 0.3s ease;
      backdrop-filter: blur(12px);
    }

    .card:hover {
      border-color: #ff2a8d;
      box-shadow: var(--glow-pink);
      transform: translateY(-4px);
    }

    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
      align-items: stretch;
    }

    .about-item h3 {
      font-size: 20px;
      margin-bottom: 12px;
      color: #ff7ebb;
    }

    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .service-card h3 {
      font-size: 18px;
      color: #fff;
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .service-card h3::before {
      content: "";
      display: inline-block;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #ff2a8d;
      box-shadow: 0 0 8px #ff2a8d;
    }

    .service-card p {
      color: var(--text-light);
      font-size: 14px;
      line-height: 1.6;
    }

    .model-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 36px;
    }

    .model-tag {
      padding: 6px 14px;
      background: rgba(147, 51, 234, 0.15);
      border: 1px solid rgba(147, 51, 234, 0.35);
      color: #e2e8f0;
      border-radius: 6px;
      font-size: 12px;
      letter-spacing: 0.5px;
    }

    .model-tag:hover {
      border-color: #ff2a8d;
      color: #fff;
      box-shadow: 0 0 10px rgba(255, 42, 141, 0.3);
    }

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

    .step-box {
      text-align: center;
      position: relative;
    }

    .step-circle {
      width: 50px;
      height: 50px;
      margin: 0 auto 16px;
      border-radius: 50%;
      background: var(--gradient-brand);
      color: #fff;
      font-weight: 700;
      font-size: 18px;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--glow-pink);
    }

    .step-box h3 {
      font-size: 16px;
      margin-bottom: 8px;
      color: #fff;
    }

    .step-box p {
      font-size: 13px;
      color: var(--text-muted);
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      border-radius: 12px;
      border: 1px solid var(--bg-card-border);
      background: rgba(18, 14, 36, 0.8);
    }

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

    table.eval-table th, 
    table.eval-table td {
      padding: 16px 20px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 14px;
    }

    table.eval-table th {
      background: rgba(255, 42, 141, 0.15);
      color: #ff94c7;
      font-weight: 600;
    }

    table.eval-table td.highlight {
      color: #ff2a8d;
      font-weight: 700;
    }

    .eval-badge {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 24px;
      padding: 16px;
      background: rgba(255, 42, 141, 0.1);
      border-radius: 10px;
      border: 1px solid rgba(255, 42, 141, 0.3);
    }

    .eval-score {
      font-size: 28px;
      font-weight: 800;
      color: #ff2a8d;
    }

    .gallery-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
      margin-top: 30px;
    }

    .gallery-item {
      border-radius: 12px;
      overflow: hidden;
      border: 1px solid rgba(255, 42, 141, 0.3);
      position: relative;
    }

    .gallery-item img {
      width: 100%;
      height: 240px;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .gallery-item:hover img {
      transform: scale(1.04);
    }

    .gallery-caption {
      padding: 14px 18px;
      background: rgba(12, 10, 26, 0.9);
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .review-card {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-header {
      display: flex;
      justify-content: space-between;
      margin-bottom: 14px;
    }

    .reviewer-name {
      font-weight: 600;
      color: #fff;
    }

    .reviewer-role {
      font-size: 12px;
      color: #ff7ebb;
    }

    .review-card p {
      font-size: 13.5px;
      color: var(--text-light);
      line-height: 1.6;
    }

    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--bg-card-border);
      border-radius: 10px;
      overflow: hidden;
    }

    .faq-question {
      padding: 16px 20px;
      cursor: pointer;
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: #fff;
      user-select: none;
    }

    .faq-question:hover {
      color: #ff7ebb;
    }

    .faq-toggle-icon {
      font-size: 18px;
      color: #ff2a8d;
      transition: transform 0.3s ease;
    }

    .faq-answer {
      display: none;
      padding: 0 20px 16px;
      color: var(--text-light);
      font-size: 14px;
      line-height: 1.6;
    }

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

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

    .form-wrapper {
      max-width: 680px;
      margin: 0 auto;
      background: var(--bg-card);
      border: 1px solid var(--bg-card-border);
      padding: 36px;
      border-radius: 16px;
      box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    }

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

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

    .form-control {
      width: 100%;
      padding: 12px 16px;
      background: rgba(9, 8, 20, 0.6);
      border: 1px solid rgba(255, 42, 141, 0.3);
      border-radius: 8px;
      color: #fff;
      font-size: 14px;
      outline: none;
      transition: 0.3s;
    }

    .form-control:focus {
      border-color: #ff2a8d;
      box-shadow: 0 0 10px rgba(255, 42, 141, 0.3);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }

    .contact-info-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 36px;
    }

    .contact-card {
      text-align: center;
      padding: 20px;
      background: rgba(22, 17, 43, 0.5);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 10px;
    }

    .contact-card h4 {
      color: #ff7ebb;
      font-size: 15px;
      margin-bottom: 8px;
    }

    .articles-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
      margin-top: 24px;
    }

    .article-item {
      background: rgba(255, 42, 141, 0.08);
      border: 1px solid rgba(255, 42, 141, 0.25);
      padding: 10px 18px;
      border-radius: 8px;
      font-size: 13.5px;
      color: #fff;
    }

    .article-item:hover {
      background: rgba(255, 42, 141, 0.2);
      border-color: #ff2a8d;
    }

    footer.site-footer {
      background: #06050e;
      border-top: 1px solid rgba(255, 42, 141, 0.2);
      padding: 50px 0 30px;
      margin-top: 60px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 30px;
    }

    .footer-col h4 {
      font-size: 16px;
      color: #fff;
      margin-bottom: 16px;
      position: relative;
    }

    .footer-col p {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-links li a {
      color: var(--text-muted);
      font-size: 13.5px;
    }

    .footer-links li a:hover {
      color: #ff2a8d;
    }

    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      align-items: center;
      padding-top: 20px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
    }

    .friend-links span {
      font-size: 13.5px;
      color: var(--text-muted);
    }

    .friend-links a {
      font-size: 13.5px;
      color: var(--text-light);
    }

    .friend-links a:hover {
      color: #ff2a8d;
    }

    .footer-bottom {
      text-align: center;
      padding-top: 24px;
      font-size: 13px;
      color: #64748b;
    }

    .floating-contact {
      position: fixed;
      right: 24px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .floating-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--gradient-brand);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 14px rgba(255, 42, 141, 0.5);
      cursor: pointer;
      position: relative;
    }

    .qr-popup {
      position: absolute;
      right: 60px;
      bottom: 0;
      width: 140px;
      padding: 10px;
      background: #130f26;
      border: 1px solid #ff2a8d;
      border-radius: 8px;
      box-shadow: 0 0 20px rgba(0,0,0,0.8);
      display: none;
      text-align: center;
    }

    .floating-btn:hover .qr-popup {
      display: block;
    }

    .qr-popup img {
      width: 100%;
      height: auto;
      border-radius: 4px;
    }

    .qr-popup span {
      display: block;
      font-size: 11px;
      margin-top: 6px;
      color: #ff7ebb;
    }

    @media (max-width: 992px) {
      .services-grid,
      .steps-grid,
      .reviews-grid,
      .hero-metrics {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-grid,
      .gallery-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #0d0a1c;
        flex-direction: column;
        padding: 20px 0;
        border-bottom: 1px solid rgba(255, 42, 141, 0.3);
      }
      .nav-links.show {
        display: flex;
      }
      .mobile-menu-toggle {
        display: flex;
      }
      .hero-title {
        font-size: 28px;
      }
      .hero-metrics,
      .services-grid,
      .steps-grid,
      .reviews-grid,
      .contact-info-grid {
        grid-template-columns: 1fr;
      }
      .form-wrapper {
        padding: 20px;
      }
    }