:root {
      --primary-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
      --accent-cyan: #06b6d4;
      --accent-purple: #7c3aed;
      --accent-pink: #ec4899;
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --bg-alt: #f1f5f9;
      --text-main: #0f172a;
      --text-muted: #475569;
      --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-lg: 0 20px 25px -5px rgba(124, 58, 237, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
      --radius: 16px;
    }

    * { 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-main); color: var(--text-main); line-height: 1.6; }
    body { overflow-x: hidden; min-height: 100vh; }

    .ai-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; width: 100%; }
    .text-center { text-align: center; }
    .gradient-text { background: var(--primary-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; font-weight: 800; }
    .badge { display: inline-block; padding: 6px 16px; border-radius: 999px; background: rgba(124, 58, 237, 0.08); color: var(--accent-purple); font-size: 14px; font-weight: 600; margin-bottom: 12px; border: 1px solid rgba(124, 58, 237, 0.2); }

    /* 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 var(--border-color); box-shadow: var(--shadow-sm); }
    .nav-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }
    .brand-box { display: flex; align-items: center; gap: 12px; text-decoration: none; }
    .nav-links { display: flex; align-items: center; list-style: none; margin: 0; padding: 0; gap: 0; }
    .nav-links li { margin: 0 10px; }
    .nav-links a { text-decoration: none; color: var(--text-main); font-size: 15px; font-weight: 500; transition: color 0.2s; padding: 6px 8px; }
    .nav-links a:hover { color: var(--accent-purple); }
    .btn-nav { padding: 10px 22px; border-radius: 999px; background: var(--primary-gradient); color: #fff !important; font-weight: 600; text-decoration: none; box-shadow: 0 4px 14px rgba(168, 85, 247, 0.35); transition: transform 0.2s, box-shadow 0.2s; display: inline-block; }
    .btn-nav:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(168, 85, 247, 0.45); }
    .menu-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; color: var(--text-main); }

    /* Hero Section - STRICTLY NO IMAGES */
    .hero-section { padding: 90px 0 70px 0; background: radial-gradient(circle at 50% 20%, rgba(168, 85, 247, 0.12) 0%, rgba(6, 182, 212, 0.05) 50%, rgba(248, 250, 252, 0) 100%); text-align: center; position: relative; }
    .hero-h1 { font-size: 42px; line-height: 1.2; font-weight: 900; margin-bottom: 20px; letter-spacing: -0.5px; }
    .hero-desc { font-size: 19px; color: var(--text-muted); max-width: 800px; margin: 0 auto 36px auto; }
    .hero-btn-group { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; margin-bottom: 50px; }
    .btn-primary { padding: 14px 36px; border-radius: 999px; background: var(--primary-gradient); color: #ffffff; font-size: 16px; font-weight: 700; text-decoration: none; box-shadow: 0 8px 24px rgba(168, 85, 247, 0.35); transition: all 0.25s; border: none; cursor: pointer; display: inline-flex; align-items: center; gap: 8px; }
    .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(168, 85, 247, 0.5); }
    .btn-secondary { padding: 14px 36px; border-radius: 999px; background: #ffffff; color: var(--text-main); font-size: 16px; font-weight: 700; text-decoration: none; border: 2px solid var(--border-color); box-shadow: var(--shadow-sm); transition: all 0.25s; display: inline-flex; align-items: center; }
    .btn-secondary:hover { border-color: var(--accent-purple); color: var(--accent-purple); transform: translateY(-3px); }

    .hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; max-width: 1000px; margin: 0 auto; }
    .stat-card { background: #ffffff; padding: 24px; border-radius: var(--radius); border: 1px solid var(--border-color); box-shadow: var(--shadow-sm); transition: transform 0.2s; }
    .stat-card:hover { transform: translateY(-4px); border-color: var(--accent-purple); }
    .stat-num { font-size: 32px; font-weight: 800; color: var(--accent-purple); margin-bottom: 4px; }
    .stat-label { font-size: 14px; color: var(--text-muted); font-weight: 500; }

    /* Section Styling */
    .section-padding { padding: 80px 0; }
    .section-title { font-size: 32px; font-weight: 800; margin-bottom: 14px; color: var(--text-main); }
    .section-subtitle { font-size: 16px; color: var(--text-muted); max-width: 680px; margin: 0 auto 50px auto; }

    /* Cards Grid */
    .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: #ffffff; border-radius: var(--radius); padding: 30px; border: 1px solid var(--border-color); box-shadow: var(--shadow-sm); transition: all 0.3s ease; position: relative; overflow: hidden; }
    .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(168, 85, 247, 0.4); }
    .feature-icon { width: 52px; height: 52px; border-radius: 12px; background: rgba(124, 58, 237, 0.1); color: var(--accent-purple); display: flex; align-items: center; justify-content: center; font-size: 24px; font-weight: bold; margin-bottom: 20px; }
    .feature-title { font-size: 20px; font-weight: 700; margin-bottom: 10px; color: var(--text-main); }
    .feature-desc { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

    /* Model Tag Pills */
    .model-tags { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 30px; }
    .model-pill { background: #ffffff; border: 1px solid var(--border-color); padding: 8px 18px; border-radius: 999px; font-size: 14px; font-weight: 600; color: var(--text-main); box-shadow: var(--shadow-sm); transition: all 0.2s; }
    .model-pill:hover { border-color: var(--accent-pink); color: var(--accent-pink); transform: scale(1.05); }

    /* Comparison Table */
    .comp-box { background: #ffffff; border-radius: var(--radius); border: 1px solid var(--border-color); box-shadow: var(--shadow-lg); overflow-hidden; padding: 30px; }
    .rating-header { display: flex; align-items: center; justify-content: space-between; padding-bottom: 20px; border-bottom: 2px dashed var(--border-color); margin-bottom: 24px; flex-wrap: wrap; gap: 16px; }
    .rating-score { font-size: 28px; font-weight: 900; color: #f59e0b; display: flex; align-items: center; gap: 10px; }
    .table-wrapper { overflow-x: auto; }
    .custom-table { width: 100%; border-collapse: collapse; text-align: left; }
    .custom-table th, .custom-table td { padding: 16px 20px; border-bottom: 1px solid var(--border-color); font-size: 15px; }
    .custom-table th { background: var(--bg-alt); font-weight: 700; color: var(--text-main); }
    .custom-table tr:hover { background: rgba(241, 245, 249, 0.6); }
    .highlight-col { background: rgba(168, 85, 247, 0.05); font-weight: 700; color: var(--accent-purple); }

    /* Review Cards */
    .review-card { background: #ffffff; border-radius: var(--radius); padding: 26px; border: 1px solid var(--border-color); box-shadow: var(--shadow-sm); }
    .review-user { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
    .avatar-placeholder { width: 44px; height: 44px; border-radius: 50%; background: var(--primary-gradient); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 16px; }
    .user-info h4 { font-size: 16px; font-weight: 700; }
    .user-info p { font-size: 13px; color: var(--text-muted); }

    /* FAQ Accordion */
    .faq-list { max-width: 840px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
    .faq-item { background: #ffffff; border: 1px solid var(--border-color); border-radius: 12px; overflow: hidden; box-shadow: var(--shadow-sm); }
    .faq-question { width: 100%; text-align: left; padding: 20px 24px; background: none; border: none; font-size: 17px; font-weight: 700; color: var(--text-main); cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
    .faq-answer { padding: 0 24px 20px 24px; font-size: 15px; color: var(--text-muted); display: none; line-height: 1.7; border-top: 1px solid rgba(0,0,0,0.04); padding-top: 14px; }
    .faq-item.active .faq-answer { display: block; }
    .faq-item.active .faq-icon { transform: rotate(180deg); }
    .faq-icon { transition: transform 0.3s; font-size: 18px; color: var(--accent-purple); }

    /* Form & Contact */
    .form-box { background: #ffffff; border-radius: var(--radius); padding: 40px; border: 1px solid var(--border-color); box-shadow: var(--shadow-lg); }
    .form-group { margin-bottom: 20px; text-align: left; }
    .form-group label { display: block; font-weight: 600; margin-bottom: 8px; font-size: 14px; }
    .form-control { width: 100%; padding: 12px 16px; border: 1px solid var(--border-color); border-radius: 8px; font-size: 15px; transition: border-color 0.2s; outline: none; }
    .form-control:focus { border-color: var(--accent-purple); box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.15); }
    textarea.form-control { resize: vertical; min-height: 110px; }

    /* Media Library Display */
    .media-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; margin-top: 30px; }
    .media-card { background: #ffffff; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border-color); box-shadow: var(--shadow-sm); }
    .media-card img { width: 100%; height: 200px; object-fit: cover; display: block; }
    .media-body { padding: 16px; }

    /* Footer */
    .footer { background: #0f172a; color: #94a3b8; padding: 60px 0 30px 0; border-top: 1px solid #1e293b; }
    .footer h4 { color: #ffffff; margin-bottom: 16px; font-size: 16px; }
    .footer a { color: #94a3b8; text-decoration: none; transition: color 0.2s; }
    .footer a:hover { color: #ffffff; }
    .friend-links { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 20px; }
    .friend-links a { background: #1e293b; padding: 6px 14px; border-radius: 6px; font-size: 13px; color: #cbd5e1; }
    .friend-links a:hover { background: var(--accent-purple); color: #fff; }
    .footer-bottom { text-align: center; padding-top: 40px; margin-top: 40px; border-top: 1px solid #1e293b; font-size: 14px; }

    /* Fixed Widget */
    .float-widget { position: fixed; right: 24px; bottom: 30px; z-index: 999; display: flex; flex-direction: column; gap: 12px; }
    .float-btn { width: 50px; height: 50px; border-radius: 50%; background: var(--primary-gradient); color: #fff; display: flex; align-items: center; justify-content: center; text-decoration: none; box-shadow: 0 4px 14px rgba(0,0,0,0.25); font-size: 20px; transition: transform 0.2s; }
    .float-btn:hover { transform: scale(1.1); }

    /* Responsive Breakdown */
    @media (max-width: 992px) {
      .hero-h1 { font-size: 32px; }
      .grid-4, .grid-3 { grid-template-columns: repeat(2, 1fr); }
      .hero-stats { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .nav-links { display: none; position: absolute; top: 76px; left: 0; width: 100%; background: #ffffff; flex-direction: column; padding: 20px 0; border-bottom: 1px solid var(--border-color); box-shadow: var(--shadow-lg); }
      .nav-links.active { display: flex; }
      .nav-links li { margin: 10px 0; }
      .menu-toggle { display: block; }
      .grid-4, .grid-3, .grid-2, .hero-stats { grid-template-columns: 1fr; }
      .hero-h1 { font-size: 26px; }
      .section-padding { padding: 50px 0; }
    }