.qr-builder { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(20px, 3vw, 36px); align-items: start; max-width: 1060px; margin: 0 auto; }
.qr-builder__heading { font-size: 21px; margin-bottom: 10px; }
.qr-builder__fields { border: 0; padding: 0; margin: 24px 0 0; min-width: 0; }
.qr-builder__choices { border: 0; padding: 0; min-width: 0; }
.qr-builder__choices legend { margin-bottom: 10px; font-weight: 700; font-size: 14px; }
.qr-builder__choices label { display: flex; align-items: flex-start; justify-content: flex-start; gap: 10px; border: 1px solid var(--border-2); padding: 13px 14px; border-radius: 12px; margin-bottom: 10px; cursor: pointer; }
.qr-builder__choices label:has(input:checked) { border-color: var(--brand-1); background: var(--surface); }
.qr-builder__choices input { margin-top: 4px; accent-color: var(--brand-1); }
.qr-builder__choices small { display: block; color: var(--text-2); font-weight: 400; margin-top: 3px; line-height: 1.5; }
.qr-builder__select { width: 100%; min-height: 48px; padding: 12px 14px; border: 1px solid var(--border-2); border-radius: 12px; background: var(--surface); color: var(--text); font: inherit; }
.qr-builder__select:focus-visible { outline: 2px solid var(--brand-1); outline-offset: 3px; }
.qr-builder__reset { margin-top: 10px; }
.qr-builder__preview { text-align: center; padding: clamp(22px, 3vw, 34px); }
.qr-builder__image { background: #f3f4f6; color: #4b5563; border-radius: 16px; padding: 18px; margin: 22px 0; min-height: 290px; display: grid; place-items: center; }
.qr-builder__image canvas { display: block; width: 100%; max-width: 340px; height: auto; background: #fff; box-shadow: 0 4px 18px #00000010; }
.qr-builder__caption { margin-top: 14px; }
.qr-builder__notice { margin-top: 14px; color: var(--text-2); line-height: 1.6; font-size: 14px; overflow-wrap: anywhere; }
.qr-builder__verify { margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--border); font-size: 13px; color: var(--text-2); line-height: 1.7; }
.qr-builder [hidden] { display: none !important; }
.qr-builder .btn:disabled { cursor: not-allowed; opacity: .5; }
@media (max-width: 900px) { .qr-builder { grid-template-columns: minmax(0, 1fr); max-width: 570px; } }