:root{--primary: #2563eb;--primary-dark: #1d4ed8;--primary-light: #3b82f6;--primary-bg: #eff6ff;--orange: #f59e0b;--green: #10b981;--purple: #8b5cf6;--pink: #ec4899;--cyan: #06b6d4;--text-1: #0f172a;--text-2: #334155;--text-3: #64748b;--text-4: #94a3b8;--bg-1: #ffffff;--bg-2: #f8fafc;--bg-3: #f1f5f9;--border: #e2e8f0;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);--shadow: 0 4px 16px rgba(15, 23, 42, .08);--shadow-lg: 0 12px 40px rgba(15, 23, 42, .12);--shadow-primary: 0 8px 24px rgba(37, 99, 235, .25);--radius: 12px;--radius-lg: 20px;--radius-sm: 8px;--container: 1200px;--header-h: 72px}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:var(--header-h)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica 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ease}.navbar.scrolled{background:#fffffff2;border-bottom-color:var(--border);box-shadow:var(--shadow-sm)}.nav-inner{display:flex;align-items:center;justify-content:space-between;height:100%}.logo{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--text-1)}.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;border-radius:10px;font-size:13px;font-weight:800;letter-spacing:-.5px;box-shadow:0 4px 12px #2563eb59}.logo-text{font-size:19px}.nav-menu{display:flex;align-items:center;gap:4px}.nav-link{padding:8px 14px;font-size:15px;font-weight:500;color:var(--text-2);border-radius:var(--radius-sm);transition:all .2s 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16px;font-size:14px}.form-row-2{grid-template-columns:1fr}.trial-form-large{padding:24px}.cta-contact{flex-direction:column;gap:16px}.footer-inner{grid-template-columns:1fr 1fr;gap:32px}.footer-brand{grid-column:1 / -1}.final-cta h2{font-size:26px}.final-actions .btn{width:100%}.back-top{right:18px;bottom:18px}}@media (max-width: 480px){.hero-title{font-size:28px}.logo-text{font-size:16px}.logo-mark{width:32px;height:32px;font-size:11px}.stats-inner{grid-template-columns:1fr 1fr}.footer-inner{grid-template-columns:1fr}.toast{left:18px;right:18px;transform:translateY(-30px)}.toast.show{transform:translateY(0)}}