/* Global Resets & Candy Bright Palette */
    :root {
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --primary: #ff4757;
      --primary-hover: #ff6b81;
      --secondary: #5f27cd;
      --accent-cyan: #00d2d3;
      --accent-orange: #ff9f43;
      --accent-green: #10ac84;
      --candy-pink: #ff9ff3;
      --border-color: #e2e8f0;
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(95, 39, 205, 0.08);
      --shadow-candy: 0 12px 30px rgba(255, 71, 87, 0.15);
      --container-width: 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;
    }

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

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

    /* Header & Navigation */
    .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: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
    }
    
    /* Strict Requirement: .nav-links gap must be 0 */
    .nav-links {
      display: flex;
      gap: 0;
      list-style: none;
      align-items: center;
    }
    .nav-links li a {
      display: block;
      padding: 8px 12px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      border-radius: var(--radius-sm);
    }
    .nav-links li a:hover {
      color: var(--primary);
      background: #fff0f3;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-header {
      padding: 8px 20px;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #ffffff !important;
      font-weight: 700;
      font-size: 14px;
      border-radius: 9999px;
      box-shadow: 0 4px 14px rgba(255, 71, 87, 0.3);
    }
    .btn-header:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 71, 87, 0.4);
    }
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--text-main);
      cursor: pointer;
    }

    /* Section Component Settings */
    .section {
      padding: 80px 0;
    }
    .section-light {
      background-color: #ffffff;
    }
    .section-candy {
      background: linear-gradient(180deg, #fff5f6 0%, #f4f0ff 100%);
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px auto;
    }
    .section-badge {
      display: inline-block;
      padding: 6px 16px;
      background: rgba(255, 71, 87, 0.1);
      color: var(--primary);
      font-weight: 700;
      font-size: 13px;
      border-radius: 9999px;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
    }

    /* HERO SECTION - NO IMAGES ALLOWED */
    .hero-section {
      padding: 100px 0 80px 0;
      background: radial-gradient(circle at 10% 20%, #ffeef2 0%, #f0ebff 40%, #e6f9ff 100%);
      position: relative;
      overflow: hidden;
    }
    .hero-inner {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
      position: relative;
      z-index: 2;
    }
    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      padding: 8px 20px;
      border-radius: 9999px;
      box-shadow: 0 4px 15px rgba(0,0,0,0.06);
      font-size: 14px;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 24px;
      border: 1px solid rgba(95, 39, 205, 0.15);
    }
    .hero-h1 {
      font-size: 42px;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
    }
    .hero-h1 span {
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-subtitle {
      font-size: 18px;
      color: var(--text-muted);
      margin-bottom: 36px;
      line-height: 1.7;
    }
    .hero-buttons {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }
    .btn-main {
      padding: 16px 36px;
      font-size: 16px;
      font-weight: 800;
      color: #ffffff !important;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      border-radius: 9999px;
      box-shadow: var(--shadow-candy);
    }
    .btn-main:hover {
      transform: translateY(-3px);
      box-shadow: 0 16px 35px rgba(255, 71, 87, 0.35);
    }
    .btn-secondary {
      padding: 16px 36px;
      font-size: 16px;
      font-weight: 700;
      color: var(--secondary);
      background: #ffffff;
      border: 2px solid var(--secondary);
      border-radius: 9999px;
      box-shadow: var(--shadow-sm);
    }
    .btn-secondary:hover {
      background: #f4f0ff;
      transform: translateY(-3px);
    }

    /* Metric Cards in Hero */
    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .metric-card {
      background: rgba(255, 255, 255, 0.85);
      backdrop-filter: blur(10px);
      padding: 24px 16px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.8);
      box-shadow: var(--shadow-md);
      text-align: center;
    }
    .metric-number {
      font-size: 32px;
      font-weight: 900;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .metric-label {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-muted);
    }

    /* Grid Layouts */
    .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
    .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

    /* Feature Cards */
    .card {
      background: var(--bg-card);
      border-radius: var(--radius-md);
      padding: 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: rgba(95, 39, 205, 0.2);
    }
    .card-icon {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      margin-bottom: 20px;
    }
    .icon-pink { background: #ffeef2; color: var(--primary); }
    .icon-purple { background: #f4f0ff; color: var(--secondary); }
    .icon-cyan { background: #e6f9ff; color: var(--accent-cyan); }
    .icon-orange { background: #fff5eb; color: var(--accent-orange); }

    .card-title {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .card-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Supported Models Tags */
    .models-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 30px;
    }
    .model-chip {
      background: #ffffff;
      padding: 8px 16px;
      border-radius: 9999px;
      font-size: 13px;
      font-weight: 700;
      color: var(--text-main);
      border: 1px solid var(--border-color);
      box-shadow: 0 2px 5px rgba(0,0,0,0.03);
    }
    .model-chip.highlight {
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #ffffff;
      border: none;
    }

    /* Comparison Section */
    .rating-badge-container {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 20px;
      background: #ffffff;
      padding: 20px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      margin-bottom: 30px;
    }
    .rating-score {
      font-size: 40px;
      font-weight: 900;
      color: var(--primary);
    }
    .stars {
      color: #ffb142;
      font-size: 20px;
    }

    .table-wrapper {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 600px;
    }
    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }
    .compare-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }
    .compare-table tr:hover {
      background: #fafafa;
    }
    .highlight-col {
      background: #fff5f6;
      font-weight: 700;
      color: var(--primary);
    }

    /* Process Timeline */
    .timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      position: relative;
    }
    .step-number {
      width: 36px;
      height: 36px;
      background: var(--primary);
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      margin-bottom: 16px;
    }

    /* Cases & Banners */
    .case-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .case-card img {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
    }
    .case-body {
      padding: 20px;
    }

    /* Customer Reviews */
    .review-card {
      background: #ffffff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .review-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }
    .avatar-circle {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--accent-cyan), var(--secondary));
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 16px;
    }
    .review-role {
      font-size: 12px;
      color: var(--text-muted);
    }
    .review-name {
      font-weight: 700;
      font-size: 15px;
    }

    /* FAQ Section */
    .faq-list {
      max-width: 840px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
    }
    .faq-question {
      width: 100%;
      padding: 18px 24px;
      text-align: left;
      background: none;
      border: none;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .faq-answer {
      padding: 0 24px 18px 24px;
      font-size: 14px;
      color: var(--text-muted);
      display: none;
      line-height: 1.7;
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(180deg);
    }
    .faq-toggle-icon {
      transition: transform 0.3s ease;
    }

    /* Form Section */
    .form-container {
      max-width: 640px;
      margin: 0 auto;
      background: #ffffff;
      padding: 40px;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-label {
      display: block;
      font-size: 14px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      outline: none;
      transition: border 0.2s;
    }
    .form-control:focus {
      border-color: var(--secondary);
    }
    textarea.form-control {
      min-height: 100px;
      resize: vertical;
    }
    .btn-submit {
      width: 100%;
      padding: 14px;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #ffffff;
      font-weight: 800;
      font-size: 16px;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: var(--shadow-candy);
    }

    /* Footer Rules: MUST specify explicit dark background with readable white/light text */
    .footer {
      background-color: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px 0;
      font-size: 14px;
    }
    .footer a {
      color: #cbd5e1;
    }
    .footer a:hover {
      color: #ffffff;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-title {
      color: #ffffff;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 8px;
    }
    .qr-box {
      text-align: center;
      background: #1e293b;
      padding: 12px;
      border-radius: var(--radius-sm);
      display: inline-block;
    }
    .qr-box img {
      width: 120px;
      height: 120px;
      display: block;
      margin-bottom: 8px;
    }
    .friendship-links {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      margin-top: 24px;
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }
    .copyright {
      text-align: center;
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      margin-top: 24px;
      font-size: 13px;
      color: #64748b;
    }

    /* Float Widget */
    .float-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 50px;
      height: 50px;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      box-shadow: 0 6px 20px rgba(0,0,0,0.2);
      cursor: pointer;
    }

    /* Media Queries for Responsiveness */
    @media (max-width: 992px) {
      .hero-metrics { grid-template-columns: repeat(2, 1fr); }
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .grid-3 { grid-template-columns: repeat(1, 1fr); }
      .timeline { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .header-actions .btn-header { display: none; }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
      }
      .nav-links.active { display: flex; }
      .mobile-menu-toggle { display: block; }
      .hero-h1 { font-size: 28px; }
      .hero-metrics { grid-template-columns: 1fr; }
      .grid-2 { grid-template-columns: 1fr; }
      .timeline { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
    }