:root{--tb-blue:#2563eb;--tb-indigo:#4f46e5;--tb-violet:#7c3aed;--tb-cyan:#0891b2;--tb-green:#16a34a;--tb-red:#dc2626;--tb-amber:#d97706;--tb-grad-brand:linear-gradient(135deg,#2563eb,#7c3aed 50%,#0891b2);--tb-grad-primary:linear-gradient(135deg,#2563eb,#4f46e5);--tb-fg:#0f172a;--tb-muted:#475569;--tb-subtle:#94a3b8;--tb-border:#e2e8f0;--tb-border-strong:#cbd5e1;--tb-surface:#ffffff;--tb-surface-2:#f8fafc;--tb-bg:#f8fafc;--tb-green-bg:#f0fdf4;--tb-red-bg:#fef2f2;--tb-radius:12px;--tb-radius-sm:8px;--tb-radius-pill:999px;--tb-shadow-sm:0 1px 2px rgba(15,23,42,0.04),0 1px 3px rgba(15,23,42,0.06);--tb-shadow-md:0 10px 24px rgba(37,99,235,0.12);--tb-font:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}*,:after,:before{box-sizing:border-box}body,html{margin:0}body{font-family:var(--tb-font);color:var(--tb-fg);background:var(--tb-bg);-webkit-font-smoothing:antialiased}:focus-visible{outline:2px solid 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