:root {
      --bg-base: #0a0b14;
      --bg-surface: #111322;
      --bg-card: #181b30;
      --bg-card-glass: rgba(24, 27, 48, 0.85);
      --border-color: rgba(0, 240, 255, 0.2);
      --border-hover: rgba(255, 0, 128, 0.5);
      --neon-cyan: #00f0ff;
      --neon-pink: #ff007f;
      --neon-purple: #9d00ff;
      --neon-lime: #00ff88;
      --text-main: #f0f4fc;
      --text-muted: #9aa5be;
      --text-dim: #65718d;
      --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: var(--font-family);
      line-height: 1.6;
      background-image: 
        radial-gradient(circle at 15% 10%, rgba(0, 240, 255, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 85% 30%, rgba(255, 0, 127, 0.08) 0%, transparent 45%),
        radial-gradient(circle at 50% 80%, rgba(157, 0, 255, 0.08) 0%, transparent 50%);
      background-attachment: fixed;
    }
    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    a {
      color: var(--neon-cyan);
      text-decoration: none;
      transition: color 0.3s, text-shadow 0.3s;
    }
    a:hover {
      color: var(--neon-pink);
      text-shadow: 0 0 8px rgba(255, 0, 127, 0.6);
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 11, 20, 0.9);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .brand-logo img.ai-page-logo {
      height: 40px;
      width: auto;
    }
    .brand-name {
      font-size: 1.25rem;
      font-weight: 700;
      background: linear-gradient(90deg, var(--neon-cyan), var(--neon-pink));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0;
    }
    .nav-links li a {
      color: var(--text-main);
      padding: 8px 12px;
      font-size: 0.9rem;
      border-radius: 4px;
      display: inline-block;
      transition: background 0.3s, color 0.3s;
    }
    .nav-links li a:hover {
      background: rgba(0, 240, 255, 0.1);
      color: var(--neon-cyan);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .mobile-menu-btn {
      display: none;
      background: transparent;
      border: 1px solid var(--neon-cyan);
      color: var(--neon-cyan);
      padding: 6px 10px;
      border-radius: 4px;
      cursor: pointer;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: 6px;
      cursor: pointer;
      transition: all 0.3s ease;
      border: 1px solid transparent;
      text-align: center;
    }
    .btn-neon {
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
      color: #ffffff;
      box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
    }
    .btn-neon:hover {
      background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
      box-shadow: 0 0 20px rgba(255, 0, 127, 0.6);
      color: #ffffff;
      transform: translateY(-2px);
    }
    .btn-outline {
      background: transparent;
      border-color: var(--neon-cyan);
      color: var(--neon-cyan);
    }
    .btn-outline:hover {
      background: rgba(0, 240, 255, 0.15);
      color: #ffffff;
      border-color: #ffffff;
      box-shadow: 0 0 12px rgba(0, 240, 255, 0.3);
    }
    .section-padding {
      padding: 70px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .section-header {
      text-align: center;
      margin-bottom: 45px;
    }
    .section-badge {
      display: inline-block;
      padding: 4px 12px;
      font-size: 0.8rem;
      letter-spacing: 1px;
      border-radius: 20px;
      background: rgba(0, 240, 255, 0.1);
      border: 1px solid var(--neon-cyan);
      color: var(--neon-cyan);
      margin-bottom: 12px;
      text-transform: uppercase;
    }
    .section-title {
      font-size: 2rem;
      color: #ffffff;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }
    .section-desc {
      color: var(--text-muted);
      max-width: 700px;
      margin: 0 auto;
      font-size: 1rem;
    }
    .hero-section {
      padding: 90px 0 60px;
      text-align: center;
      position: relative;
    }
    .hero-glow-blob {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      width: 450px;
      height: 450px;
      background: radial-gradient(circle, rgba(0, 240, 255, 0.15) 0%, rgba(255, 0, 127, 0.1) 50%, transparent 70%);
      filter: blur(50px);
      z-index: -1;
      pointer-events: none;
    }
    .hero-title {
      font-size: 2.5rem;
      line-height: 1.3;
      margin-bottom: 20px;
      font-weight: 800;
      background: linear-gradient(135deg, #ffffff 30%, var(--neon-cyan) 70%, var(--neon-pink) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-muted);
      max-width: 800px;
      margin: 0 auto 35px;
    }
    .hero-cta-box {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 45px;
      flex-wrap: wrap;
    }
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
    }
    .stat-card {
      background: var(--bg-card-glass);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 20px;
      text-align: center;
      transition: transform 0.3s, border-color 0.3s;
    }
    .stat-card:hover {
      transform: translateY(-4px);
      border-color: var(--neon-cyan);
      box-shadow: 0 5px 20px rgba(0, 240, 255, 0.15);
    }
    .stat-num {
      font-size: 2rem;
      font-weight: 700;
      color: var(--neon-cyan);
      margin-bottom: 6px;
    }
    .stat-label {
      font-size: 0.9rem;
      color: var(--text-muted);
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }
    .card {
      background: var(--bg-card);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 8px;
      padding: 24px;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }
    .card:hover {
      border-color: var(--neon-pink);
      box-shadow: 0 8px 24px rgba(255, 0, 127, 0.15);
      transform: translateY(-3px);
    }
    .card-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .card-title::before {
      content: "";
      width: 4px;
      height: 16px;
      background: var(--neon-cyan);
      border-radius: 2px;
      display: inline-block;
    }
    .card-text {
      color: var(--text-muted);
      font-size: 0.92rem;
      flex-grow: 1;
    }
    .model-tag-wall {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 25px;
    }
    .model-tag {
      background: rgba(24, 27, 48, 0.8);
      border: 1px solid var(--border-color);
      color: var(--text-main);
      padding: 6px 14px;
      border-radius: 4px;
      font-size: 0.85rem;
      font-family: monospace;
      transition: all 0.2s ease;
    }
    .model-tag:hover {
      border-color: var(--neon-lime);
      color: var(--neon-lime);
      box-shadow: 0 0 10px rgba(0, 255, 136, 0.2);
    }
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-box {
      background: var(--bg-surface);
      border: 1px dashed var(--border-color);
      border-radius: 8px;
      padding: 24px 18px;
      text-align: center;
      position: relative;
    }
    .step-badge {
      width: 36px;
      height: 36px;
      line-height: 36px;
      border-radius: 50%;
      background: var(--neon-purple);
      color: #ffffff;
      font-weight: 700;
      margin: 0 auto 14px;
      box-shadow: 0 0 10px var(--neon-purple);
    }
    .table-container {
      overflow-x: auto;
      background: var(--bg-surface);
      border-radius: 8px;
      border: 1px solid var(--border-color);
    }
    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.92rem;
    }
    .custom-table th, .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .custom-table th {
      background: rgba(0, 240, 255, 0.05);
      color: var(--neon-cyan);
      font-weight: 600;
    }
    .custom-table tr:hover {
      background: rgba(255, 255, 255, 0.02);
    }
    .rating-badge {
      display: inline-flex;
      align-items: center;
      background: linear-gradient(90deg, #ff007f, #9d00ff);
      color: #fff;
      padding: 4px 10px;
      border-radius: 4px;
      font-size: 0.8rem;
      font-weight: bold;
    }
    .gallery-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .gallery-item {
      background: var(--bg-surface);
      border-radius: 8px;
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.08);
      display: flex;
      flex-direction: column;
    }
    .gallery-img-box {
      width: 100%;
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: #000;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .gallery-img-box.square-box {
      aspect-ratio: 1 / 1;
    }
    .gallery-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .gallery-item:hover .gallery-img-box img {
      transform: scale(1.05);
    }
    .gallery-content {
      padding: 16px 20px;
    }
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 6px;
      overflow: hidden;
    }
    .faq-question {
      padding: 18px 24px;
      font-weight: 600;
      font-size: 1rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: #ffffff;
      transition: background 0.3s;
    }
    .faq-question:hover {
      background: rgba(0, 240, 255, 0.05);
    }
    .faq-icon {
      font-size: 1.2rem;
      color: var(--neon-cyan);
      transition: transform 0.3s;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: rgba(10, 11, 20, 0.5);
      color: var(--text-muted);
      font-size: 0.92rem;
      padding: 0 24px;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 16px 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--neon-pink);
    }
    .testimonial-card {
      background: var(--bg-surface);
      border-left: 3px solid var(--neon-cyan);
      border-radius: 0 8px 8px 0;
      padding: 22px;
      position: relative;
    }
    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 15px;
    }
    .author-avatar-text {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-pink));
      color: #ffffff;
      font-weight: bold;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
    }
    .author-info h4 {
      font-size: 0.95rem;
      color: #ffffff;
    }
    .author-info p {
      font-size: 0.8rem;
      color: var(--text-dim);
    }
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: start;
    }
    .form-box {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 8px;
      padding: 30px;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-label {
      display: block;
      margin-bottom: 6px;
      font-size: 0.88rem;
      color: var(--text-muted);
    }
    .form-control {
      width: 100%;
      padding: 12px 14px;
      background: rgba(10, 11, 20, 0.8);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: 4px;
      color: #ffffff;
      font-size: 0.95rem;
      font-family: inherit;
    }
    .form-control:focus {
      outline: none;
      border-color: var(--neon-cyan);
      box-shadow: 0 0 8px rgba(0, 240, 255, 0.3);
    }
    .contact-info-panel {
      background: var(--bg-surface);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 8px;
      padding: 30px;
    }
    .contact-item-row {
      margin-bottom: 16px;
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 0.95rem;
    }
    .qr-container {
      margin-top: 20px;
      text-align: center;
      display: inline-block;
      padding: 12px;
      background: #ffffff;
      border-radius: 8px;
    }
    .qr-container img {
      width: 140px;
      height: 140px;
      display: block;
    }
    .qr-label {
      color: #111;
      font-size: 0.8rem;
      font-weight: 600;
      margin-top: 6px;
    }
    .site-footer {
      background: #06070d;
      border-top: 1px solid rgba(0, 240, 255, 0.2);
      padding: 50px 0 20px;
      font-size: 0.88rem;
      color: var(--text-dim);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 40px;
    }
    .footer-col h5 {
      color: #ffffff;
      font-size: 1rem;
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 8px;
    }
    .footer-links a {
      color: var(--text-dim);
    }
    .footer-links a:hover {
      color: var(--neon-cyan);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 20px;
      text-align: center;
    }
    .floating-kefu {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
      color: #ffffff;
      padding: 12px 18px;
      border-radius: 30px;
      font-size: 0.9rem;
      font-weight: 600;
      box-shadow: 0 4px 15px rgba(255, 0, 127, 0.4);
      display: flex;
      align-items: center;
      gap: 8px;
      cursor: pointer;
    }
    .floating-kefu:hover {
      box-shadow: 0 6px 20px rgba(255, 0, 127, 0.7);
      transform: translateY(-2px);
    }
    @media (max-width: 992px) {
      .hero-title { font-size: 2rem; }
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .grid-3 { grid-template-columns: repeat(2, 1fr); }
      .gallery-grid { grid-template-columns: repeat(2, 1fr); }
      .flow-steps { grid-template-columns: repeat(2, 1fr); }
      .contact-wrapper { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: #0a0b14;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.active { display: flex; }
      .mobile-menu-btn { display: block; }
      .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .grid-3, .grid-2, .gallery-grid { grid-template-columns: 1fr; }
      .flow-steps { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
    }