:root{--brand:#2563eb;--brand-dark:#1d4ed8;--brand-soft:#eff6ff;--accent:#0ea5e9;--ink:#0f172a;--ink-2:#1e293b;--muted:#64748b;--muted-2:#94a3b8;--line:#e2e8f0;--line-strong:#cbd5e1;--surface:#ffffff;--surface-soft:#f8fafc;--surface-blue:#f5f9ff;--warn:#fffbeb;--warn-line:#fde68a;--ok:#ecfdf5;--ok-line:#a7f3d0;--radius:18px;--radius-sm:12px;--shadow-sm:0 1px 2px rgba(15,23,42,.04),0 4px 12px rgba(15,23,42,.04);--shadow:0 14px 40px rgba(15,23,42,.08);--shadow-lg:0 24px 64px rgba(15,23,42,.12)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe 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