body { font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial; background:#f5f7f9; margin:0; }
.container { max-width:720px; margin:40px auto; padding:0 16px; }
.card { background:#fff; border:1px solid #e6eaef; border-radius:18px; padding:16px; margin:16px 0; box-shadow:0 2px 8px rgba(16,24,40,.04); }
input, textarea, select { width:100%; padding:10px 12px; border:1px solid #e6eaef; border-radius:12px; margin:6px 0 12px; font-size:16px; }
button { padding:10px 14px; border:0; border-radius:12px; background:#111; color:#fff; font-size:16px; cursor:pointer; }
button:hover { opacity:.92; }
.muted { color:#667085; text-decoration:none; }
ul { padding-left:18px; }