body{font-family:system-ui,sans-serif;max-width:640px;margin:0 auto;padding:16px;color:#1f2937;background:#f8fafc}
h1{font-size:1.4rem}form,.card{background:#fff;border:1px solid #e5e7eb;border-radius:10px;padding:16px;margin:12px 0}
label{display:block;margin:10px 0 4px;font-weight:600}input,select{width:100%;padding:10px;border:1px solid #cbd5e1;border-radius:8px;box-sizing:border-box}
input[type=checkbox]{width:auto;margin-right:8px}button{margin-top:14px;padding:10px 16px;border:0;border-radius:8px;background:#2563eb;color:#fff;font-size:1rem}
.err{background:#fee2e2;padding:10px;border-radius:8px}.note{color:#6b7280;font-size:.9rem}
.danger{background:#dc2626}