:root {
      --bg-main: #0b0f19;
      --bg-card: #121829;
      --bg-card-light: #1a2238;
      --text-main: #f1f5f9;
      --text-muted: #94a3b8;
      --neon-cyan: #00f0ff;
      --neon-pink: #ff007f;
      --neon-purple: #8b5cf6;
      --neon-lime: #10b981;
      --border-glow: rgba(0, 240, 255, 0.25);
      --border-pink: rgba(255, 0, 127, 0.25);
      --container-max: 1200px;
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      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 40%),
        radial-gradient(circle at 50% 70%, rgba(139, 92, 246, 0.08) 0%, transparent 50%);
    }

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

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

    /* Header & Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(11, 15, 25, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(0, 240, 255, 0.2);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-logo-wrap .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }
    .brand-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: #fff;
      letter-spacing: 0.5px;
      text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 0.95rem;
      color: var(--text-muted);
      border-radius: 6px;
      transition: all 0.2s ease;
    }
    .nav-links li a:hover {
      color: var(--neon-cyan);
      text-shadow: 0 0 8px rgba(0, 240, 255, 0.6);
      background: rgba(0, 240, 255, 0.05);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-neon-glow {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      color: #fff;
      background: linear-gradient(135deg, #00f0ff 0%, #ff007f 100%);
      border-radius: 8px;
      border: none;
      cursor: pointer;
      box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }
    .btn-neon-glow:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 25px rgba(255, 0, 127, 0.6);
    }
    .btn-neon-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--neon-cyan);
      background: transparent;
      border: 1px solid var(--neon-cyan);
      border-radius: 8px;
      box-shadow: inset 0 0 10px rgba(0, 240, 255, 0.2);
      transition: all 0.2s ease;
    }
    .btn-neon-outline:hover {
      background: rgba(0, 240, 255, 0.1);
      box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
      color: #fff;
    }

    .mobile-toggle {
      display: none;
      background: none;
      border: 1px solid var(--neon-cyan);
      color: var(--neon-cyan);
      padding: 6px 10px;
      border-radius: 6px;
      font-size: 1.2rem;
      cursor: pointer;
    }

    /* Section Global */
    section {
      padding: 70px 0;
      position: relative;
    }
    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 50px auto;
    }
    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--neon-cyan);
      background: rgba(0, 240, 255, 0.1);
      border: 1px solid var(--border-glow);
      border-radius: 20px;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 1px;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: #fff;
      margin-bottom: 15px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
    }

    /* Hero Section (No Images as required) */
    .hero-section {
      padding: 90px 0 80px 0;
      text-align: center;
      position: relative;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      font-size: 0.9rem;
      background: rgba(255, 0, 127, 0.12);
      border: 1px solid var(--neon-pink);
      color: #ff55a3;
      border-radius: 30px;
      margin-bottom: 24px;
      box-shadow: 0 0 15px rgba(255, 0, 127, 0.3);
    }
    .hero-title {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 24px;
      color: #ffffff;
      text-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
    }
    .hero-title span {
      background: linear-gradient(135deg, #00f0ff 0%, #d946ef 50%, #ff007f 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-subtitle {
      max-width: 820px;
      margin: 0 auto 36px auto;
      font-size: 1.15rem;
      color: #cbd5e1;
      line-height: 1.7;
    }
    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
    }
    .stat-card {
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      padding: 24px 16px;
      border-radius: 12px;
      box-shadow: 0 4px 20px rgba(0,0,0,0.4);
      transition: transform 0.3s ease, border-color 0.3s ease;
    }
    .stat-card:hover {
      transform: translateY(-4px);
      border-color: var(--neon-pink);
    }
    .stat-num {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--neon-cyan);
      margin-bottom: 6px;
      text-shadow: 0 0 10px rgba(0, 240, 255, 0.4);
    }
    .stat-label {
      font-size: 0.95rem;
      color: var(--text-muted);
    }

    /* Cards & Grids */
    .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;
    }

    .feature-card {
      background: var(--bg-card);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 14px;
      padding: 28px 24px;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .feature-card:hover {
      border-color: var(--neon-cyan);
      box-shadow: 0 8px 30px rgba(0, 240, 255, 0.15);
      transform: translateY(-5px);
    }
    .card-icon-glow {
      width: 48px;
      height: 48px;
      border-radius: 10px;
      background: rgba(0, 240, 255, 0.1);
      border: 1px solid var(--neon-cyan);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--neon-cyan);
      font-size: 1.4rem;
      margin-bottom: 18px;
    }
    .feature-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: #fff;
    }
    .feature-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    /* Multi Model Badges */
    .model-badge-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 24px;
    }
    .model-badge {
      padding: 8px 16px;
      background: var(--bg-card-light);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: 8px;
      font-size: 0.9rem;
      color: #e2e8f0;
      font-weight: 500;
      transition: all 0.2s ease;
    }
    .model-badge:hover {
      border-color: var(--neon-pink);
      color: var(--neon-pink);
      box-shadow: 0 0 12px rgba(255, 0, 127, 0.3);
    }

    /* Comparison Table & Rating */
    .rating-banner {
      background: linear-gradient(135deg, rgba(0, 240, 255, 0.15), rgba(255, 0, 127, 0.15));
      border: 1px solid var(--neon-cyan);
      border-radius: 16px;
      padding: 30px;
      display: flex;
      align-items: center;
      justify-content: space-around;
      flex-wrap: wrap;
      gap: 20px;
      margin-bottom: 40px;
      box-shadow: 0 0 25px rgba(0, 240, 255, 0.2);
    }
    .rating-score-box {
      text-align: center;
    }
    .rating-score-box .score-val {
      font-size: 3.2rem;
      font-weight: 900;
      color: var(--neon-cyan);
      line-height: 1;
    }
    .rating-stars {
      color: #fbbf24;
      font-size: 1.3rem;
      margin: 6px 0;
    }
    .table-container {
      overflow-x: auto;
      background: var(--bg-card);
      border-radius: 14px;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    table.compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    table.compare-table th, table.compare-table td {
      padding: 18px 20px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    table.compare-table th {
      background: rgba(0, 240, 255, 0.06);
      color: #fff;
      font-size: 1rem;
      font-weight: 700;
    }
    table.compare-table tr:hover td {
      background: rgba(255, 255, 255, 0.02);
    }
    .highlight-col {
      color: var(--neon-cyan);
      font-weight: 600;
      background: rgba(0, 240, 255, 0.03);
    }

    /* Process Flow */
    .process-step-list {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .process-card {
      background: var(--bg-card);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 12px;
      padding: 24px;
      position: relative;
    }
    .step-number {
      font-size: 2rem;
      font-weight: 900;
      color: var(--neon-pink);
      line-height: 1;
      margin-bottom: 12px;
    }

    /* Case Media Showcase */
    .case-gallery {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .case-img-box {
      border-radius: 12px;
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.1);
      background: var(--bg-card);
    }
    .case-img-box img {
      width: 100%;
      height: 220px;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }
    .case-img-box:hover img {
      transform: scale(1.05);
    }
    .case-info {
      padding: 16px;
    }
    .case-info h4 {
      font-size: 1.05rem;
      margin-bottom: 6px;
      color: #fff;
    }
    .case-info p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* Review Cards */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: var(--bg-card);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 14px;
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-content {
      font-size: 0.95rem;
      color: #cbd5e1;
      margin-bottom: 20px;
      line-height: 1.6;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 14px;
    }
    .author-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #0b0f19;
    }
    .author-meta h5 {
      font-size: 0.95rem;
      color: #fff;
    }
    .author-meta span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* FAQ Accordion */
    .faq-wrapper {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 10px;
      overflow: hidden;
      transition: border-color 0.2s ease;
    }
    .faq-item.active {
      border-color: var(--neon-cyan);
    }
    .faq-question {
      padding: 18px 22px;
      font-weight: 600;
      font-size: 1.05rem;
      color: #fff;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
    }
    .faq-icon {
      color: var(--neon-cyan);
      font-weight: bold;
      transition: transform 0.3s ease;
    }
    .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;
      padding: 0 22px;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.6;
    }
    .faq-item.active .faq-answer {
      max-height: 300px;
      padding-bottom: 18px;
    }

    /* Form Section */
    .form-box {
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      border-radius: 16px;
      padding: 36px;
      box-shadow: 0 0 30px rgba(0, 240, 255, 0.1);
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-group label {
      display: block;
      font-size: 0.9rem;
      color: #e2e8f0;
      margin-bottom: 8px;
      font-weight: 500;
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      background: #0d1322;
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: 8px;
      color: #fff;
      font-size: 0.95rem;
      outline: none;
      transition: border-color 0.2s ease;
    }
    .form-control:focus {
      border-color: var(--neon-cyan);
      box-shadow: 0 0 8px rgba(0, 240, 255, 0.3);
    }

    /* Articles & Links */
    .article-link-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 20px;
    }
    .article-item-pill {
      padding: 10px 18px;
      background: var(--bg-card);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 8px;
      color: #cbd5e1;
      font-size: 0.9rem;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .article-item-pill:hover {
      border-color: var(--neon-cyan);
      color: var(--neon-cyan);
    }

    /* Footer */
    .site-footer {
      background: #070a12;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 60px 0 30px 0;
      color: #94a3b8;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-col h4 {
      color: #fff;
      font-size: 1.1rem;
      margin-bottom: 20px;
      position: relative;
    }
    .footer-col ul {
      list-style: none;
    }
    .footer-col ul li {
      margin-bottom: 10px;
    }
    .footer-col ul li a:hover {
      color: var(--neon-cyan);
    }
    .qr-contact-box {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .qr-contact-box img {
      width: 90px;
      height: 90px;
      border-radius: 8px;
      border: 1px solid rgba(255, 255, 255, 0.2);
    }
    .friend-links-bar {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding: 20px 0;
      font-size: 0.88rem;
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }
    .friend-links-bar a {
      color: var(--text-muted);
    }
    .friend-links-bar a:hover {
      color: var(--neon-cyan);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
    }

    /* Floating Contact */
    .floating-kefu {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      background: linear-gradient(135deg, var(--neon-cyan), var(--neon-pink));
      padding: 12px;
      border-radius: 50%;
      box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: transform 0.2s ease;
    }
    .floating-kefu:hover {
      transform: scale(1.1);
    }

    /* Responsive */
    @media (max-width: 992px) {
      .grid-4, .hero-stats-grid, .process-step-list {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3, .review-grid, .case-gallery {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .hero-title {
        font-size: 2.2rem;
      }
    }
    @media (max-width: 768px) {
      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #0b0f19;
        border-bottom: 1px solid var(--border-glow);
        padding: 16px 20px;
      }
      .nav-links.show {
        display: flex;
      }
      .mobile-toggle {
        display: block;
      }
      .grid-4, .grid-3, .grid-2, .hero-stats-grid, .process-step-list, .review-grid, .case-gallery, .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 1.8rem;
      }
      .hero-section {
        padding: 60px 0 40px 0;
      }
    }