:root{--board:#2e4b3f;--chalk:#f3efe4;--paper:#fbf8ee;--ink:#26343a;--accent:#e2702a;--sel:#2f7fd1}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Hiragino Maru Gothic ProN,BIZ UDPGothic,Yu Gothic UI,Meiryo,system-ui,sans-serif}.t-header{background:var(--board);color:var(--chalk);padding:10px 18px;border-bottom:4px solid #b98a4f}.t-header h1{margin:0;font-size:18px;letter-spacing:.06em}.t-sub{font-size:12px;opacity:.8;margin-left:8px}.t-main{display:grid;grid-template-columns:minmax(300px,380px) 1fr;gap:20px;padding:18px;max-width:1280px;margin:0 auto}@media(max-width:860px){.t-main{grid-template-columns:1fr}}h2{font-size:15px;border-left:5px solid var(--accent);padding-left:8px;margin:18px 0 10px}fieldset{border:2px solid #c9d6cc;border-radius:10px;background:#fff;margin:0 0 14px;padding:10px 14px}legend{font-size:13px;font-weight:700;padding:0 6px}fieldset label{display:block;font-size:14px;line-height:2;cursor:pointer}.t-parts{display:grid;grid-template-columns:repeat(2,1fr);border-top:1px dashed #c9d6cc;margin:6px 0;padding-top:6px}.t-parts[hidden]{display:none}.t-parts label{font-size:13px;line-height:1.9}.t-hint{font-size:12px;color:#5a6b74;margin:6px 0}.t-row{display:flex;gap:8px;align-items:center}#urlOut{flex:1;font:inherit;font-size:13px;padding:9px 10px;border:2px solid #c9d6cc;border-radius:8px;background:#fff}button{font:inherit;font-size:13px;font-weight:700;background:var(--board);color:var(--chalk);border:none;border-radius:8px;padding:9px 16px;cursor:pointer;white-space:nowrap}button:hover{opacity:.88}button:disabled{opacity:.4;cursor:default}button:focus-visible{outline:2px solid var(--sel);outline-offset:2px}.t-qr{margin:14px 0;min-height:60px}.t-qr svg{background:#fff;border:2px solid #c9d6cc;border-radius:8px}.t-qr .t-qr-error{color:#d64533;font-size:13px;font-weight:700}#preview{width:100%;height:520px;border:2px solid #c9d6cc;border-radius:10px;background:#fff}