/* CSS Root & Iridescent Holographic Light Theme */
    :root {
      --primary-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
      --holographic-bg: linear-gradient(120deg, rgba(238, 242, 255, 0.7) 0%, rgba(243, 232, 255, 0.7) 50%, rgba(252, 231, 243, 0.7) 100%);
      --holo-border: linear-gradient(90deg, #818cf8, #c084fc, #f472b6, #38bdf8);
      --bg-body: #f8fafc;
      --bg-card: #ffffff;
      --bg-glass: rgba(255, 255, 255, 0.85);
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --accent-color: #6366f1;
      --accent-hover: #4f46e5;
      --border-color: #e2e8f0;
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
      --shadow-holo: 0 10px 30px -5px rgba(168, 85, 247, 0.15), 0 4px 12px rgba(99, 102, 241, 0.1);
      --radius-lg: 16px;
      --radius-md: 12px;
      --radius-sm: 8px;
      --container-max: 1240px;
    }

    /* Global Reset & Basic Formatting */
    *, *::before, *::after {
      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-body);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      background-image: 
        radial-gradient(at 10% 10%, rgba(99, 102, 241, 0.06) 0px, transparent 50%),
        radial-gradient(at 90% 90%, rgba(236, 72, 153, 0.06) 0px, transparent 50%),
        radial-gradient(at 50% 50%, rgba(168, 85, 247, 0.04) 0px, transparent 50%);
      background-attachment: fixed;
    }

    a {
      color: var(--accent-color);
      text-decoration: none;
      transition: all 0.25s ease;
    }

    a:hover {
      color: var(--accent-hover);
    }

    ul, ol {
      list-style: none;
    }

    /* Unified Container Class */
    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 20px;
    }

    /* Standard Section Setup */
    .section-block {
      padding: 80px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 50px auto;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 16px;
      border-radius: 20px;
      background: var(--holographic-bg);
      border: 1px solid rgba(168, 85, 247, 0.3);
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--accent-color);
      margin-bottom: 12px;
      letter-spacing: 1px;
    }

    .section-title {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .section-subtitle {
      font-size: 1.05rem;
      color: var(--text-muted);
    }

    /* Holographic Accent Border Box */
    .holo-card {
      background: var(--bg-card);
      border-radius: var(--radius-lg);
      padding: 30px;
      border: 1px solid rgba(226, 232, 240, 0.8);
      box-shadow: var(--shadow-sm);
      position: relative;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .holo-card::before {
      content: '';
      position: absolute;
      top: -1px; left: -1px; right: -1px; bottom: -1px;
      border-radius: var(--radius-lg);
      padding: 1px;
      background: var(--holo-border);
      -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
      -webkit-mask-composite: destination-out;
      mask-composite: exclude;
      opacity: 0.4;
      transition: opacity 0.3s ease;
      pointer-events: none;
    }

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

    .holo-card:hover::before {
      opacity: 1;
    }

    /* Header & Navigation */
    .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);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      text-decoration: none;
    }

    .ai-page-logo {
      max-height: 42px;
      width: auto;
      object-fit: contain;
    }

    .brand-name {
      font-size: 1.25rem;
      font-weight: 800;
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    /* Crucial Rule Requirement for .nav-links */
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }

    .nav-links li a {
      padding: 8px 14px;
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--text-main);
      border-radius: var(--radius-sm);
      display: inline-block;
    }

    .nav-links li a:hover {
      color: var(--accent-color);
      background: rgba(99, 102, 241, 0.08);
    }

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

    .btn-nav-primary {
      padding: 10px 20px;
      border-radius: var(--radius-sm);
      background: var(--primary-gradient);
      color: #ffffff !important;
      font-weight: 600;
      font-size: 0.9rem;
      box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
    }

    .btn-nav-primary:hover {
      opacity: 0.95;
      transform: translateY(-1px);
    }

    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
    }

    /* Hero Section (No Image strictly enforcing rule B2/II-2) */
    .hero-section {
      padding: 90px 0 70px 0;
      background: var(--holographic-bg);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      position: relative;
      overflow: hidden;
    }

    .hero-content {
      text-align: center;
      max-width: 920px;
      margin: 0 auto;
      position: relative;
      z-index: 2;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      padding: 6px 18px;
      border-radius: 30px;
      box-shadow: 0 2px 8px rgba(0,0,0,0.05);
      border: 1px solid rgba(168, 85, 247, 0.3);
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--accent-color);
      margin-bottom: 24px;
    }

    .hero-title {
      font-size: 2.75rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      margin-bottom: 36px;
      line-height: 1.7;
    }

    .hero-buttons {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }

    .btn-main {
      padding: 14px 32px;
      font-size: 1.05rem;
      font-weight: 700;
      border-radius: 30px;
      text-align: center;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      cursor: pointer;
      border: none;
      transition: all 0.3s ease;
    }

    .btn-holo {
      background: var(--primary-gradient);
      color: #ffffff !important;
      box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
    }

    .btn-holo:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 25px rgba(99, 102, 241, 0.4);
    }

    .btn-outline {
      background: #ffffff;
      color: var(--text-main) !important;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .btn-outline:hover {
      background: #f1f5f9;
      border-color: #cbd5e1;
    }

    /* Metric Cards Grid in Hero */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 20px;
    }

    .metric-card {
      background: rgba(255, 255, 255, 0.9);
      border-radius: var(--radius-md);
      padding: 20px;
      text-align: center;
      border: 1px solid rgba(226, 232, 240, 0.8);
      box-shadow: var(--shadow-sm);
    }

    .metric-num {
      font-size: 2rem;
      font-weight: 800;
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 4px;
    }

    .metric-label {
      font-size: 0.88rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* Grid Layout Helper */
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 25px;
    }

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

    /* About Us Section */
    .about-card {
      background: #ffffff;
      padding: 35px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .about-card h3 {
      font-size: 1.35rem;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .about-card p {
      color: var(--text-muted);
      font-size: 0.98rem;
      line-height: 1.7;
    }

    /* Services Cards (24 Key Features) */
    .service-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
    }

    .service-card:hover {
      border-color: rgba(168, 85, 247, 0.5);
      transform: translateY(-3px);
      box-shadow: var(--shadow-holo);
    }

    .service-icon-box {
      width: 46px;
      height: 46px;
      border-radius: 10px;
      background: var(--holographic-bg);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      margin-bottom: 16px;
      color: var(--accent-color);
      border: 1px solid rgba(168, 85, 247, 0.2);
    }

    .service-card h4 {
      font-size: 1.1rem;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .service-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* Models Tags Cloud */
    .models-wrapper {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 30px;
    }

    .model-tag {
      background: #ffffff;
      border: 1px solid rgba(168, 85, 247, 0.3);
      padding: 8px 16px;
      border-radius: 20px;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
      box-shadow: 0 2px 5px rgba(0,0,0,0.03);
      transition: all 0.2s ease;
    }

    .model-tag:hover {
      background: var(--primary-gradient);
      color: #ffffff;
      border-color: transparent;
    }

    /* Flow / Process Steps */
    .process-step {
      text-align: center;
      padding: 25px 20px;
      position: relative;
    }

    .step-num {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: var(--primary-gradient);
      color: #ffffff;
      font-size: 1.25rem;
      font-weight: 800;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px auto;
      box-shadow: 0 6px 16px rgba(99, 102, 241, 0.25);
    }

    .process-step h4 {
      font-size: 1.05rem;
      margin-bottom: 8px;
    }

    .process-step p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* Comparison Table Section (Section V Compliance) */
    .rating-banner {
      background: var(--holographic-bg);
      border: 1px solid rgba(168, 85, 247, 0.3);
      border-radius: var(--radius-lg);
      padding: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
      flex-wrap: wrap;
      gap: 20px;
    }

    .rating-score {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .score-big {
      font-size: 3rem;
      font-weight: 900;
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      line-height: 1;
    }

    .stars {
      color: #f59e0b;
      font-size: 1.4rem;
      letter-spacing: 2px;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

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

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

    .comp-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }

    .comp-table tr:last-child td {
      border-bottom: none;
    }

    .comp-highlight {
      background: rgba(243, 232, 255, 0.4);
      font-weight: 700;
      color: var(--accent-color);
    }

    /* Token Price Table */
    .token-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 20px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .token-card header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 12px;
      padding-bottom: 10px;
      border-bottom: 1px solid var(--border-color);
    }

    .token-card h4 {
      font-size: 1rem;
      color: var(--text-main);
    }

    .token-price {
      font-size: 1.1rem;
      font-weight: 800;
      color: #10b981;
    }

    /* Case Media Showcase Section */
    .case-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .case-img-wrap {
      width: 100%;
      overflow: hidden;
      background: #e2e8f0;
      position: relative;
    }

    .ai-page-image {
      width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
      transition: transform 0.3s ease;
    }

    .case-card:hover .ai-page-image {
      transform: scale(1.03);
    }

    .case-body {
      padding: 20px;
    }

    .case-body h4 {
      font-size: 1.1rem;
      margin-bottom: 8px;
    }

    .case-body p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* FAQ Collapsible Accordion */
    .faq-wrapper {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      transition: border-color 0.2s ease;
    }

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

    .faq-question {
      padding: 18px 24px;
      font-weight: 700;
      font-size: 1rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
      color: var(--text-main);
    }

    .faq-question::after {
      content: '+';
      font-size: 1.4rem;
      color: var(--accent-color);
      transition: transform 0.25s ease;
    }

    .faq-item.active .faq-question::after {
      content: '-';
      transform: rotate(180deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #f8fafc;
      padding: 0 24px;
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.6;
    }

    .faq-item.active .faq-answer {
      max-height: 250px;
      padding: 16px 24px;
      border-top: 1px solid var(--border-color);
    }

    /* Customer Reviews Cards (6 items) */
    .review-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 24px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .review-header {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 14px;
    }

    .avatar-placeholder {
      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;
    }

    .reviewer-info h5 {
      font-size: 0.98rem;
      color: var(--text-main);
    }

    .reviewer-info span {
      font-size: 0.8rem;
      color: var(--text-light);
    }

    .review-content {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Form & Contact Section */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1fr 1.3fr;
      gap: 40px;
    }

    .contact-info-panel {
      background: var(--holographic-bg);
      border-radius: var(--radius-lg);
      padding: 36px;
      border: 1px solid rgba(168, 85, 247, 0.3);
    }

    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      margin-bottom: 24px;
    }

    .contact-item-icon {
      font-size: 1.25rem;
      color: var(--accent-color);
    }

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

    .form-group {
      margin-bottom: 18px;
    }

    .form-label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 14px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      font-size: 0.92rem;
      color: var(--text-main);
      background: #ffffff;
      outline: none;
      transition: border-color 0.2s ease;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: var(--accent-color);
      box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    }

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

    .btn-submit {
      width: 100%;
      padding: 14px;
      border-radius: var(--radius-sm);
      background: var(--primary-gradient);
      color: #ffffff;
      font-weight: 700;
      border: none;
      cursor: pointer;
      font-size: 1rem;
      box-shadow: 0 4px 14px rgba(99, 102, 241, 0.3);
      transition: opacity 0.2s ease;
    }

    .btn-submit:hover {
      opacity: 0.95;
    }

    /* Articles & Links Grid */
    .article-item {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 16px 20px;
      border: 1px solid var(--border-color);
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 10px;
      transition: border-color 0.2s ease;
    }

    .article-item:hover {
      border-color: var(--accent-color);
    }

    .article-item a {
      color: var(--text-main);
      font-weight: 500;
      font-size: 0.95rem;
    }

    .article-item a:hover {
      color: var(--accent-color);
    }

    /* Footer Structure & Safety Colors */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px 0;
      border-top: 1px solid #1e293b;
    }

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

    .footer-brand h4 {
      color: #ffffff;
      font-size: 1.2rem;
      margin-bottom: 12px;
    }

    .footer-brand p {
      font-size: 0.88rem;
      line-height: 1.6;
      color: #94a3b8;
      margin-bottom: 16px;
    }

    .footer-col h5 {
      color: #ffffff;
      font-size: 0.98rem;
      margin-bottom: 16px;
    }

    .footer-col ul li {
      margin-bottom: 10px;
    }

    .footer-col ul li a {
      color: #94a3b8;
      font-size: 0.88rem;
    }

    .footer-col ul li a:hover {
      color: #ffffff;
    }

    .friend-links-box {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      margin-top: 24px;
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }

    .friend-links-box span {
      color: #ffffff;
      font-size: 0.88rem;
      font-weight: 600;
    }

    .friend-links-box a {
      color: #94a3b8;
      font-size: 0.85rem;
    }

    .friend-links-box a:hover {
      color: #38bdf8;
    }

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
    }

    .qr-box {
      text-align: center;
    }

    .qr-box img {
      width: 110px;
      height: 110px;
      border-radius: 8px;
      margin-bottom: 6px;
      border: 2px solid #334155;
    }

    /* Floating Customer Service Button */
    .float-cs {
      position: fixed;
      right: 24px;
      bottom: 24px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .cs-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: var(--primary-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
      cursor: pointer;
      transition: transform 0.2s ease;
    }

    .cs-btn:hover {
      transform: scale(1.1);
    }

    /* Responsive Adaptation Rules */
    @media (max-width: 992px) {
      .hero-title { font-size: 2.1rem; }
      .metrics-grid { grid-template-columns: repeat(2, 1fr); }
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .grid-3 { grid-template-columns: repeat(2, 1fr); }
      .contact-wrapper { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
      .header-inner { height: 64px; }
      .mobile-toggle { display: block; }
      .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-sm);
        gap: 0;
      }
      .nav-links.active { display: flex; }
      .nav-links li { width: 100%; text-align: center; margin-bottom: 10px; }
      .hero-title { font-size: 1.75rem; }
      .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .rating-banner { flex-direction: column; text-align: center; }
    }