/* CSS RESET & VARIABLES - Rainbow Modern Theme */
    :root {
      --primary-grad: linear-gradient(135deg, #ff4b1f 0%, #ff9068 25%, #6a11cb 70%, #2575fc 100%);
      --rainbow-accent: linear-gradient(90deg, #ff007a, #9900f0, #00bfff, #00e676, #ffea00, #ff007a);
      --bg-light: #f8fafc;
      --bg-white: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --border-color: #e2e8f0;
      --card-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.06), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      --rainbow-border-shadow: 0 4px 20px rgba(106, 17, 203, 0.15);
      --container-max: 1240px;
      --radius-lg: 16px;
      --radius-md: 10px;
    }

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

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.6;
    }

    body {
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

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

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

    /* TYPOGRAPHY */
    h1, h2, h3, h4 {
      color: var(--text-main);
      font-weight: 700;
      line-height: 1.25;
    }

    .section-title {
      font-size: 2.25rem;
      text-align: center;
      margin-bottom: 12px;
      position: relative;
      display: inline-block;
    }

    .section-header {
      text-align: center;
      margin-bottom: 50px;
    }

    .section-subtitle {
      color: var(--text-muted);
      font-size: 1.05rem;
      max-width: 700px;
      margin: 0 auto;
    }

    .rainbow-text {
      background: linear-gradient(135deg, #ff007a 0%, #6a11cb 50%, #2575fc 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .rainbow-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 16px;
      border-radius: 9999px;
      background: rgba(106, 17, 203, 0.08);
      border: 1px solid rgba(106, 17, 203, 0.2);
      color: #6a11cb;
      font-size: 0.875rem;
      font-weight: 600;
      margin-bottom: 16px;
    }

    /* BUTTONS */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 28px;
      font-size: 1rem;
      font-weight: 600;
      border-radius: 9999px;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      cursor: pointer;
      border: none;
      gap: 8px;
    }

    .btn-rainbow {
      background: linear-gradient(135deg, #ff007a, #6a11cb 50%, #2575fc);
      color: #ffffff !important;
      box-shadow: 0 6px 20px rgba(106, 17, 203, 0.3);
    }

    .btn-rainbow:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 25px rgba(106, 17, 203, 0.45);
      filter: brightness(1.05);
    }

    .btn-outline {
      background: #ffffff;
      color: var(--text-main);
      border: 2px solid var(--border-color);
    }

    .btn-outline:hover {
      border-color: #6a11cb;
      color: #6a11cb;
      transform: translateY(-2px);
    }

    /* 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);
    }

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

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

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

    .brand-title {
      font-size: 1.35rem;
      font-weight: 800;
      background: linear-gradient(135deg, #ff007a, #2575fc);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 20px;
      list-style: none;
    }

    .nav-menu a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      transition: color 0.2s;
    }

    .nav-menu a:hover {
      color: #6a11cb;
    }

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

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

    /* HERO SECTION (NO IMAGES PER RULE) */
    .hero-section {
      padding: 90px 0 70px;
      background: radial-gradient(circle at 10% 20%, rgba(255, 0, 122, 0.05) 0%, transparent 40%),
                  radial-gradient(circle at 90% 80%, rgba(37, 117, 252, 0.06) 0%, transparent 40%),
                  #ffffff;
      border-bottom: 1px solid var(--border-color);
      text-align: center;
      position: relative;
    }

    .hero-content {
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-title {
      font-size: 3rem;
      font-weight: 900;
      letter-spacing: -0.02em;
      margin-bottom: 24px;
      line-height: 1.2;
    }

    .hero-description {
      font-size: 1.2rem;
      color: var(--text-muted);
      margin-bottom: 36px;
      line-height: 1.7;
    }

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

    /* HERO STATS BAR */
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
    }

    .stat-card {
      text-align: center;
    }

    .stat-number {
      font-size: 2rem;
      font-weight: 800;
      color: #6a11cb;
    }

    .stat-label {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* MODEL TAGS CLOUD */
    .model-tags-bar {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
      margin-top: 30px;
    }

    .model-tag {
      background: #f1f5f9;
      color: #334155;
      font-size: 0.8rem;
      padding: 4px 12px;
      border-radius: 6px;
      border: 1px solid #e2e8f0;
      font-weight: 500;
    }

    /* SECTION STYLES */
    .section-padding {
      padding: 80px 0;
    }

    .bg-white {
      background-color: var(--bg-white);
    }

    /* GRID LAYOUTS */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }

    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    /* CARDS & CONTAINERS */
    .rainbow-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      padding: 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .rainbow-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: var(--rainbow-accent);
      opacity: 0;
      transition: opacity 0.3s ease;
    }

    .rainbow-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 16px 30px rgba(0, 0, 0, 0.08);
      border-color: rgba(106, 17, 203, 0.3);
    }

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

    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(255, 0, 122, 0.1), rgba(37, 117, 252, 0.1));
      color: #6a11cb;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      font-weight: bold;
      margin-bottom: 20px;
    }

    .card-title {
      font-size: 1.25rem;
      margin-bottom: 12px;
    }

    .card-text {
      color: var(--text-muted);
      font-size: 0.95rem;
    }

    /* COMPARISON TABLE */
    .comparison-wrapper {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      overflow-x: auto;
    }

    .comparison-score-box {
      background: linear-gradient(135deg, rgba(255,0,122,0.05), rgba(37,117,252,0.05));
      padding: 30px;
      text-align: center;
      border-bottom: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: space-around;
      flex-wrap: wrap;
      gap: 20px;
    }

    .score-badge {
      font-size: 3rem;
      font-weight: 900;
      color: #ff007a;
    }

    .star-rating {
      color: #ff9900;
      font-size: 1.5rem;
      margin-top: 4px;
    }

    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 600px;
    }

    .comparison-table th, .comparison-table td {
      padding: 16px 24px;
      border-bottom: 1px solid var(--border-color);
    }

    .comparison-table th {
      background: #f8fafc;
      font-size: 0.95rem;
      color: var(--text-main);
    }

    .comparison-table td {
      font-size: 0.95rem;
      color: var(--text-muted);
    }

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

    .highlight-cell {
      background: rgba(106, 17, 203, 0.03);
      font-weight: 600;
      color: #6a11cb !important;
    }

    /* PROCESS STEPS */
    .process-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .process-step {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      position: relative;
    }

    .step-num {
      font-size: 2.5rem;
      font-weight: 900;
      color: rgba(106, 17, 203, 0.15);
      position: absolute;
      top: 10px;
      right: 16px;
    }

    /* TRAINING COURSES GRID */
    .course-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .course-tag {
      align-self: flex-start;
      background: rgba(37, 117, 252, 0.1);
      color: #2575fc;
      font-size: 0.8rem;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: 4px;
      margin-bottom: 12px;
    }

    /* FAQ ACCORDION */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 12px;
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      text-align: left;
      padding: 20px 24px;
      background: none;
      border: none;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }

    .faq-question::after {
      content: '+';
      font-size: 1.4rem;
      color: #6a11cb;
      transition: transform 0.3s;
    }

    .faq-item.active .faq-question::after {
      content: '−';
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      background: #f8fafc;
    }

    .faq-item.active .faq-answer {
      padding: 0 24px 20px 24px;
      max-height: 300px;
    }

    .faq-answer p {
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.6;
    }

    /* REVIEWS SECTION */
    .review-card {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
    }

    .reviewer-info {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }

    .reviewer-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, #ff007a, #2575fc);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
    }

    .reviewer-name {
      font-weight: 700;
      font-size: 0.95rem;
    }

    .reviewer-title {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* FORM STYLES */
    .form-container {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 1px solid var(--border-color);
      box-shadow: var(--card-shadow);
      max-width: 800px;
      margin: 0 auto;
    }

    .form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .form-group.full-width {
      grid-column: span 2;
    }

    .form-group label {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
    }

    .form-control {
      padding: 12px 16px;
      border-radius: 8px;
      border: 1px solid var(--border-color);
      font-size: 0.95rem;
      outline: none;
      transition: border-color 0.2s;
    }

    .form-control:focus {
      border-color: #6a11cb;
      box-shadow: 0 0 0 3px rgba(106, 17, 203, 0.1);
    }

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

    /* MEDIA / CASE IMAGES */
    .case-img-wrap {
      border-radius: var(--radius-md);
      overflow: hidden;
      margin-bottom: 16px;
    }

    .case-img-wrap img {
      width: 100%;
      height: 200px;
      object-fit: cover;
      transition: transform 0.3s ease;
    }

    .rainbow-card:hover .case-img-wrap img {
      transform: scale(1.04);
    }

    /* FOOTER */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      color: #ffffff;
      font-size: 1.1rem;
      margin-bottom: 20px;
    }

    .footer-links {
      list-style: none;
    }

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

    .footer-links a {
      color: #94a3b8;
      font-size: 0.9rem;
      transition: color 0.2s;
    }

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

    .footer-banner-grid {
      display: flex;
      gap: 12px;
      margin-top: 16px;
    }

    .footer-banner-grid img {
      border-radius: 6px;
      max-height: 80px;
      object-fit: cover;
    }

    .friendship-links {
      border-top: 1px solid #1e293b;
      padding-top: 20px;
      margin-top: 20px;
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.85rem;
    }

    .friendship-links a {
      color: #64748b;
    }

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

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 20px;
      text-align: center;
      font-size: 0.85rem;
      color: #64748b;
    }

    /* FLOATING CONTACT WIDGET */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: #ffffff;
      box-shadow: 0 4px 15px rgba(0,0,0,0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #6a11cb;
      font-weight: bold;
      cursor: pointer;
      border: 1px solid var(--border-color);
      position: relative;
    }

    .float-btn:hover {
      transform: scale(1.08);
    }

    .qr-popover {
      display: none;
      position: absolute;
      right: 60px;
      bottom: 0;
      background: #ffffff;
      padding: 12px;
      border-radius: 12px;
      box-shadow: 0 10px 25px rgba(0,0,0,0.2);
      width: 140px;
      text-align: center;
    }

    .float-btn:hover .qr-popover {
      display: block;
    }

    .qr-popover img {
      width: 100%;
      border-radius: 6px;
    }

    .qr-popover span {
      font-size: 0.75rem;
      color: var(--text-main);
      display: block;
      margin-top: 4px;
    }

    /* RESPONSIVE */
    @media (max-width: 992px) {
      .grid-3, .grid-4, .process-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-title {
        font-size: 2.2rem;
      }
      .nav-menu {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .nav-menu.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #ffffff;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        border-bottom: 1px solid var(--border-color);
      }
    }

    @media (max-width: 640px) {
      .grid-2, .grid-3, .grid-4, .process-grid, .hero-stats-grid {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full-width {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 1.8rem;
      }
      .section-title {
        font-size: 1.75rem;
      }
    }