:root{--bg:#f6f7fb;--card:#fff;--text:#111827;--muted:#6b7280;--primary:#2563eb;--border:#d1d5db;--danger:#b91c1c}@media (prefers-color-scheme:dark){:root{--bg:#0f172a;--card:#1e293b;--text:#f1f5f9;--muted:#94a3b8;--primary:#3b82f6;--border:#475569;--danger:#f87171}}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,sans-serif;background:var(--bg);color:var(--text)}.container{max-width:760px;margin:40px auto;padding:32px;background:var(--card);border-radius:16px;box-shadow:0 10px 30px rgba(15,23,42,.1)}h1{margin-top:0}.muted{color:var(--muted)}.grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:16px;gap:16px}@media (max-width:640px){.grid{grid-template-columns:1fr}.container{margin:16px;padding:20px}}label{display:block;font-size:14px;font-weight:600;margin-bottom:6px}input,select{width:100%;padding:10px;border:1px solid var(--border);border-radius:8px;background:transparent;color:var(--text);font-size:15px}button.primary{margin-top:24px;width:100%;padding:14px;border:0;border-radius:10px;background:var(--primary);color:#fff;font-weight:700;font-size:16px;cursor:pointer}button.primary:disabled{opacity:.6;cursor:not-allowed}button.link{background:none;border:0;color:var(--primary);cursor:pointer;padding:0;font-size:14px}.error{color:var(--danger);margin-top:16px}.summary{border:1px solid var(--border);border-radius:12px;padding:16px;margin:16px 0 24px}.cta{display:inline-block;margin-top:16px;padding:12px 20px;background:var(--primary);color:#fff;border-radius:10px;text-decoration:none;font-weight:700}