body { font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; margin: 24px; }
.container { max-width: 900px; margin: 0 auto; }
.card { border: 1px solid #ddd; border-radius: 12px; padding: 20px; margin-bottom: 20px; }
label { display:block; font-weight:600; margin: 12px 0 6px; }
input[type="text"], textarea { width:100%; padding:10px; border:1px solid #ccc; border-radius:8px; font-size:14px; }
textarea { min-height: 220px; }
.row { display:flex; gap:16px; align-items:center; flex-wrap: wrap; }
.btn { background:#2563eb; color:#fff; border:none; padding:10px 16px; border-radius:10px; font-weight:600; cursor:pointer; }
.btn.secondary { background:#6b7280; }
.btn:disabled { opacity:.6; cursor:not-allowed; }
.toolbar { display:flex; gap:10px; margin-bottom: 16px; }
.msg { padding:12px 14px; border-radius:10px; background:#f1f5f9; }
.hint { color:#475569; font-size:12px; }
code { background:#f3f4f6; padding:2px 6px; border-radius:6px; }
a { color:#2563eb; text-decoration: none; }
a:hover { text-decoration: underline; }