:root {
            --primary: #ff3b5c;
            --accent: #00f0ff;
            --dark: #1a1a2e;
            --gray: #f8f9fa;
            --text: #222;
            --light-gray: #e9ecef;
        }
        * { box-sizing: border-box; margin:0; padding:0; }
        body { font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background: #fff; color: var(--text); line-height: 1.6; }
        .container { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
        header {
            position: sticky; top: 0; z-index: 1000;
            background: rgba(255,255,255,0.98); backdrop-filter: blur(12px);
            border-bottom: 1px solid #eee;
        }
        .nav { display: flex; align-items: center; justify-content: space-between; padding: 18px 0; }
        .logo { font-size: 28px; font-weight: 700; color: var(--dark); letter-spacing: -0.5px; }
        .nav-links { display: flex; gap: 28px; list-style: none; }
        .nav-links a { text-decoration: none; color: var(--dark); font-weight: 500; transition: color 0.3s; }
        .nav-links a:hover { color: var(--primary); }
        .nav-right { display: flex; align-items: center; gap: 16px; }
        .btn { padding: 10px 24px; border-radius: 50px; font-weight: 600; text-decoration: none; transition: all 0.3s; }
        .btn-primary { background: var(--primary); color: white; }
        .btn-primary:hover { background: #e62b4e; transform: translateY(-2px); }
        .hero {
            min-height: 100vh; display: flex; align-items: center; background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
            position: relative; overflow: hidden;
        }
        .hero::before { content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle, rgba(0,240,255,0.15) 0%, transparent 70%); }
        .hero-content { max-width: 680px; z-index: 2; }
        .hero h1 { font-size: clamp(42px, 6vw, 68px); line-height: 1.05; color: white; margin-bottom: 20px; }
        .hero p { font-size: 22px; color: #ddd; margin-bottom: 32px; }
        .cta-group { display: flex; gap: 16px; flex-wrap: wrap; }
        .btn-large { padding: 16px 36px; font-size: 18px; }
        .section { padding: 120px 0; }
        .section-header { font-size: 42px; font-weight: 700; text-align: center; margin-bottom: 60px; color: var(--dark); }
        .cards-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 28px; }
        .card { background: white; border-radius: 16px; padding: 32px; box-shadow: 0 10px 30px rgba(0,0,0,0.08); transition: all 0.4s cubic-bezier(0.4,0,0.2,1); }
        .card:hover { transform: translateY(-12px); box-shadow: 0 20px 40px rgba(0,0,0,0.12); }
        .card h3 { color: var(--primary); margin-bottom: 16px; }
        .steps { display: flex; flex-wrap: wrap; gap: 24px; justify-content: center; }
        .step { flex: 1; min-width: 280px; text-align: center; }
        .step-num { width: 56px; height: 56px; background: var(--accent); color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 24px; font-weight: 700; margin: 0 auto 16px; }
        .table-container { overflow-x: auto; }
        .contrast-table { width: 100%; border-collapse: collapse; margin: 40px 0; }
        .contrast-table th, .contrast-table td { padding: 16px; text-align: left; border: 1px solid #eee; }
        .contrast-table th { background: #f8f9fa; font-weight: 600; }
        .faq-item { border-bottom: 1px solid #eee; padding: 24px 0; }
        .faq-item:last-child { border-bottom: none; }
        .faq-question { font-weight: 600; cursor: pointer; display: flex; justify-content: space-between; align-items: center; font-size: 20px; }
        .faq-answer { display: none; padding-top: 12px; color: #555; }
        .comment { background: white; padding: 28px; border-radius: 16px; margin-bottom: 24px; box-shadow: 0 6px 20px rgba(0,0,0,0.06); }
        .comment-author { font-weight: 600; color: var(--primary); }
        .form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
        .form-group { display: flex; flex-direction: column; }
        .form-group label { margin-bottom: 8px; font-weight: 500; }
        .form-group input, .form-group select, .form-group textarea { padding: 14px; border: 1px solid #ddd; border-radius: 8px; font-size: 16px; }
        footer { background: #111; color: #aaa; padding: 60px 0 30px; }
        .footer-content { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 40px; }
        .float-btn { position: fixed; bottom: 30px; right: 30px; background: var(--primary); color: white; width: 62px; height: 62px; border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: 0 10px 30px rgba(255,59,92,0.4); cursor: pointer; z-index: 10000; transition: all 0.3s; }
        .float-btn:hover { transform: scale(1.1); }
        .go-top { position: fixed; bottom: 110px; right: 30px; background: rgba(255,255,255,0.9); color: var(--dark); width: 48px; height: 48px; border-radius: 50%; display: none; align-items: center; justify-content: center; box-shadow: 0 5px 15px rgba(0,0,0,0.1); z-index: 10000; }