/* QR Code 產生器 */
.tool { display: flex; flex-direction: column; gap: 20px; }
.qr-form { display: flex; flex-direction: column; align-items: center; gap: 14px; }
.qr-form .field { width: 100%; }
.qr-result { display: flex; flex-direction: column; gap: 16px; }
.qr-image { display: flex; justify-content: center; overflow-x: auto; }
.qr-image svg { max-width: 100%; height: auto; border: 1px solid var(--line); }
.range { width: 100%; accent-color: var(--accent); }
.notes-text { margin: 0; color: var(--muted); }
.center { text-align: center; }
.muted { color: var(--muted); }