:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color-scheme:light;--bg:#f5f6f8;--panel:#fff;--text:#222b38;--muted:#5b6474;--border:#d0d6e0;--primary:#215dc1;--primary-hover:#16499c;--soft:#eaf1ff;--focus:#ff9a31;--shadow:0 2px 12px #12284a0e;--radius:14px}
:root[data-theme=dark]{color-scheme:dark;--bg:#101722;--panel:#1b2533;--text:#e9eef7;--muted:#b1c0d1;--border:#425369;--primary:#76a8ff;--primary-hover:#9ec0ff;--soft:#243957;--focus:#ffbd69;--shadow:0 2px 15px #0002}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);line-height:1.45}main,.top{max-width:1240px;margin:auto;padding:16px 22px}.top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:22px}.eyebrow{font-size:.7rem;letter-spacing:.13em;color:var(--muted);font-weight:750}h1{font-size:clamp(1.7rem,3.8vw,2.5rem);letter-spacing:-.035em;margin:2px 0}h2{margin:0 0 .6rem;font-size:1.22rem}p{margin:.35em 0 .65em}.muted,.help{color:var(--muted)}.intro{margin-bottom:22px;font-size:1rem}.intro p:last-child{font-size:.88rem}.toolbar{display:flex;align-items:flex-end;flex-wrap:wrap;gap:12px;margin:0 0 14px}.field{display:grid;gap:6px;min-width:165px}.toolbar .field:first-child{flex:2;max-width:520px}.field label,.field>span{font-weight:650;font-size:.85rem}.count{display:flex;align-items:center;font-size:.91rem}.toolbar .count{height:44px;padding:0 13px;border:1px solid var(--border);background:var(--panel);border-radius:10px;min-width:155px}
button,input,select{font:inherit;border-radius:10px;min-height:44px;border:1px solid var(--border);padding:0 14px;background:var(--panel);color:var(--text);vertical-align:middle}button{font-weight:650;cursor:pointer;transition:background .12s,border-color .12s}button:disabled{opacity:.48;cursor:wait}button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--focus);outline-offset:2px}select{width:100%;max-width:100%;padding-right:32px}.primary,.pick{background:var(--primary);color:var(--panel);border-color:var(--primary)}:root[data-theme=dark] .primary,:root[data-theme=dark] .pick{color:#0f1a2b}.primary:hover,.pick:hover{background:var(--primary-hover);border-color:var(--primary-hover)}.outline{background:var(--panel)}.outline:hover,.quiet:hover{background:var(--soft)}.quiet{background:transparent;border-color:transparent;color:var(--muted)}.status{padding:12px 16px;border:1px solid var(--border);background:var(--soft);border-radius:10px;margin:12px 0 20px;font-weight:600}.status:empty{display:none}.panel{background:var(--panel);padding:20px;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.inline{display:flex;align-items:end;gap:12px;flex-wrap:wrap}.comparison{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.candidate{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:12px;min-width:0;box-shadow:var(--shadow)}.candidate>h2{font-size:1.13rem;display:flex;align-items:center;gap:8px}.letter{display:inline-grid;place-items:center;background:var(--soft);color:var(--text);width:32px;height:32px;border-radius:8px}.reference{display:flex;gap:6px;justify-content:center;align-items:center;margin:8px 0}.reference figure{width:50%;min-width:0;margin:0;text-align:center}.reference img{width:100%;height:115px;object-fit:contain;background:var(--bg);border-radius:8px}.reference figcaption{font-size:.72rem;color:var(--muted)}model-viewer,.candidate video{display:block;width:100%;height:clamp(180px,30vw,340px);border-radius:10px;background:var(--bg);object-fit:contain}.candidate video{height:clamp(170px,25vw,280px)}.media-label{font-size:.78rem;font-weight:650;color:var(--muted);margin:4px 0}.choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:14px}.pick{min-height:58px;font-size:1.08rem}.secondary-choices{display:flex;justify-content:center;gap:16px;margin:10px 0 28px;flex-wrap:wrap}.secondary-choices button{flex:1;max-width:270px}.key{margin-left:6px;border:1px solid currentColor;padding:1px 5px;border-radius:5px;font-size:.7em;opacity:.8}.help{border-top:1px solid var(--border);font-size:.86rem;padding:12px 0 25px}.help summary{cursor:pointer;font-weight:650}.hint{color:var(--muted);text-align:center;font-size:.8rem}.loading{min-height:220px;display:grid;place-items:center} @media(max-width:650px){main,.top{padding:14px}.comparison{gap:8px}.candidate{padding:7px}.candidate>h2{font-size:.92rem}.reference img{height:85px}model-viewer,.candidate video{height:200px}.toolbar .field:first-child{flex:1 0 100%}.pick{font-size:1rem;min-height:54px}.key{display:none}.secondary-choices{gap:8px}.secondary-choices button{font-size:.82rem;padding:0 8px}.intro{font-size:.95rem}}

@media(max-width:650px){.choices{position:sticky;bottom:0;z-index:10;background:var(--bg);padding:8px 0 10px;margin:5px 0 0;box-shadow:0 -3px 8px #0002}.secondary-choices{margin-top:6px}}
/* Comparison choices: tie occupies the middle of the same decision row. */
.choices{grid-template-columns:minmax(0,1fr) minmax(160px,.75fr) minmax(0,1fr)}
.choices .equal{font-size:.92rem;font-weight:650;background:var(--soft);border-color:var(--border)}
.secondary-choices{margin-top:10px}
.media-slot,.photo-slot{position:relative;overflow:hidden;background:var(--bg);border-radius:10px}
.photo-slot img{display:block}
.media-loading{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:12px;text-align:center;background:var(--soft);color:var(--text);font-weight:650;padding:16px;z-index:2;font-size:.91rem}
.media-loading.failed{background:#ffe2dd;color:#871b10;border:2px solid #dc402d;z-index:3}
:root[data-theme=dark] .media-loading.failed{background:#4b2529;color:#ffe4dc;border-color:#ff7a68}
.media-loading.failed strong{font-size:1.12rem}
.media-loading.failed span{font-weight:500}
.spinner{width:32px;height:32px;border:4px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:face-spinner .8s linear infinite}
@keyframes face-spinner{to{transform:rotate(360deg)}}
@media(prefers-reduced-motion:reduce){.spinner{animation:none}}
#skip.broken-choice{background:#b12b20;color:#fff;border-color:#b12b20;font-weight:750}
.completion-actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px}
@media(max-width:650px){.choices{grid-template-columns:minmax(0,1fr) minmax(110px,.8fr) minmax(0,1fr);gap:6px}.choices button{padding:6px;font-size:.85rem}.choices .equal{font-size:.8rem}.media-loading{font-size:.8rem;padding:6px}.spinner{width:24px;height:24px}.completion-actions button{flex:1 1 100%}}

.receipt-panel{margin:12px 0 14px;padding:13px 16px;border:1px solid var(--border);background:var(--panel);border-radius:10px;font-size:.89rem}
.receipt-panel summary{font-weight:700;cursor:pointer}
.receipt-panel p{color:var(--muted)}
.receipt-actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:12px}
#receipt-token{width:100%;max-width:100%;min-height:75px;background:var(--bg);border:1px solid var(--border);border-radius:8px;color:var(--text);padding:10px;font:12px/1.5 ui-monospace,SFMono-Regular,Consolas,monospace;overflow-wrap:anywhere}
#receipt-result{font-weight:600}