:root{--bg:#fff;--fg:#1a1a1a;--muted:#595959;--border:#e2e2e2;--accent:#0f62c7;--ok:#1a7f37;--err:#c62828;--info:#b36b00;--card:#f7f8fa}@media (prefers-color-scheme:dark){:root{--bg:#121212;--fg:#e9e9e9;--muted:#a3a3a3;--border:#2e2e2e;--accent:#6ea8ff;--ok:#4cc26b;--err:#ff7b72;--info:#ffc97a;--card:#1c1c1e}}*{box-sizing:border-box}body{background:var(--bg);color:var(--fg);margin:0;font-family:-apple-system,Segoe UI,Pretendard,Malgun Gothic,sans-serif}.bar{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:10px 16px;display:flex}.screen{flex-direction:column;gap:12px;max-width:520px;margin:0 auto;padding:16px;display:flex}input{border:1px solid var(--border);background:var(--bg);color:var(--fg);border-radius:10px;width:100%;padding:14px;font-size:1.1rem}button{background:var(--accent);color:#fff;cursor:pointer;border:0;border-radius:10px;padding:14px;font-size:1.1rem;font-weight:700}button.big{width:100%;padding:26px;font-size:1.5rem}button.secondary{background:var(--card);color:var(--fg);border:1px solid var(--border)}button.link{color:var(--accent);background:0 0;padding:4px 8px;font-size:.95rem}button:disabled{opacity:.6}.scanner,.manual,.card{flex-direction:column;gap:10px;display:flex}.manual{flex-direction:row}.manual input{flex:1}.video{object-fit:cover;background:#000;border-radius:12px;width:100%;max-height:50vh}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px}.huge{word-break:break-all;margin:0;font-size:3rem;font-weight:800}.label{margin:0;font-size:1.4rem;font-weight:700}.mono{word-break:break-all;margin:0;font-family:ui-monospace,Consolas,monospace}.small{color:var(--muted);font-size:.85rem}.codes{flex-direction:column;gap:8px;margin:0;padding:0;font-size:1.6rem;font-weight:700;list-style:none;display:flex}.msg{border:1px solid;border-radius:10px;margin:0;padding:12px 14px;font-weight:700}.msg.ok{color:var(--ok)}.msg.err{color:var(--err)}.msg.info{color:var(--info)}.row{gap:10px;display:flex}label{color:var(--muted);flex-direction:column;flex:1;gap:4px;font-size:.9rem;display:flex}label.check{color:var(--fg);flex-direction:row;align-items:center;gap:8px;font-size:1rem}label.check input{width:auto}select{border:1px solid var(--border);background:var(--bg);color:var(--fg);border-radius:10px;padding:12px;font-size:1.1rem}h2{margin:0;font-size:1.15rem}.tabs{gap:8px;display:flex}.tabs button{flex:1}.ruler{color:#000;background:#fff;border:1px solid #000;border-top:0;height:6mm;padding-left:4px;font-size:10px}.label-row{color:#000;background:#fff;align-items:center;gap:4mm;padding:1mm 0;display:flex}.label-text{min-width:18mm;font-family:Arial,sans-serif;font-size:5mm;font-weight:700}.bc-mm{display:block}@media print{.bar,.tabs,.no-print,.card:not(.sheet){display:none!important}.sheet{background:#fff;border:0;padding:0}}.offline-banner{z-index:10;background:var(--err);color:#fff;text-align:center;margin:0;padding:10px 16px;font-weight:700;position:sticky;top:0}