:root{color-scheme:dark;font-family:system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;color:#e8edf5;background:#0b101a;font-size:16px}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 80% 0%,#27304766,transparent 55%),#0b101a}header{max-width:1220px;margin:auto;padding:26px 30px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #273041}.brand{font-size:23px;font-weight:750}.brand span{color:#fbbf24;margin-right:8px}.brand small{font-size:14px;font-weight:400;color:#9baac0;margin-left:12px}.local{font-size:13px;color:#98a9bf}main{max-width:1180px;margin:auto;padding:30px 24px}.intro{margin-bottom:28px}.eyebrow{color:#b4c2d7;font-size:12px;letter-spacing:2px;margin:0 0 10px}h1{font-size:clamp(27px,4vw,42px);margin:0 0 12px;letter-spacing:-1px}.intro>p:last-child{color:#9baac0;margin:0;line-height:1.8}h2{font-size:18px;margin:0}h2 b{font-size:13px;color:#fbbf24;margin-right:10px}.workspace{display:grid;grid-template-columns:340px minmax(0,1fr);gap:24px;align-items:start}.panel{border:1px solid #2a3446;border-radius:20px;background:#131c2b;padding:25px}.upload{border:1px dashed #607087;border-radius:12px;display:flex;flex-direction:column;align-items:center;gap:8px;padding:23px 8px;margin:20px 0;cursor:pointer;background:#1a2536}.upload:hover{border-color:#fbbf24}.upload>span{font-size:28px;color:#fbbf24}.upload small{font-size:13px;color:#a9b7ca}.row{display:flex;align-items:center;justify-content:space-between;gap:10px}.row label{font-size:14px}select,button{font:inherit;border-radius:9px;border:1px solid #42516a;padding:11px 14px;background:#202d41;color:#e8edf5;cursor:pointer;min-height:44px}button:hover{filter:brightness(1.15)}button:focus-visible,select:focus-visible,.cell:focus-visible{outline:3px solid #fbbf24;outline-offset:3px}.divider{height:1px;background:#2a3446;margin:24px 0}.hint{color:#aab8cc;font-size:14px;line-height:1.7}.palette{display:grid;grid-template-columns:repeat(5,1fr);gap:9px;margin:14px 0}.swatch{padding:0;color:#101826;font-weight:700;border:3px solid transparent}.swatch.selected{border-color:white;box-shadow:0 0 0 2px #fbbf24}.quiet{background:transparent;font-size:14px;border-color:#35445b}.primary{background:#fbbf24;color:#1b1607;width:100%;border:0;font-weight:750;margin-top:20px}.secondary{width:100%}#status{font-size:14px;color:#d0d9e6;line-height:1.7;margin-bottom:0}.boardHead,.resultHead{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:22px}#badge{font-size:14px;color:#f4cb6b;background:#3b3320;padding:7px 12px;border-radius:7px}.board{display:grid;gap:5px;background:#080d15;padding:8px;border-radius:13px;width:100%;aspect-ratio:1}.cell{padding:0;min-height:0;border:0;border-radius:5px;position:relative;display:grid;place-items:center;color:#15202fcc;font-size:clamp(12px,1.3vw,15px);font-weight:600;touch-action:manipulation;aspect-ratio:1}.cell.lit{box-shadow:inset 0 0 0 3px #fff3b2;font-size:clamp(18px,3.4vw,32px)}.cell.lit:after{content:'';position:absolute;inset:2px;border-radius:4px;box-shadow:0 0 18px #ffc64c55;pointer-events:none}#answers{display:grid;grid-template-columns:repeat(2,1fr);gap:9px}#answers div{background:#202c3e;padding:10px 14px;border-radius:8px;font-size:14px}#answers strong{color:#fbd16b}#result{border-top:1px solid #334057;padding-top:20px;margin-top:22px}footer{font-size:13px;color:#8393aa;text-align:center;padding:28px 0}canvas{width:100%;height:auto;border-radius:8px;touch-action:none;background:#080d15;margin-bottom:12px}button:disabled{opacity:.55;cursor:wait}@media(max-width:760px){header{padding:20px}.local{display:none}main{padding:24px 14px}.workspace{grid-template-columns:1fr;gap:16px}.panel{padding:18px}.intro{margin-bottom:22px}.intro>p:last-child{font-size:14px}.boardPanel{grid-row:2}.board{gap:3px;padding:5px}.cell{font-size:12px}.cell.lit{font-size:25px}.upload{padding:18px}.palette{grid-template-columns:repeat(5,1fr)}#answers{gap:6px}#answers div{padding:10px 8px}.brand small{margin-left:6px}}@media(prefers-reduced-motion:no-preference){button{transition:filter .15s}.cell.lit{animation:light .35s ease-out}@keyframes light{from{transform:scale(.85)}to{transform:scale(1)}}}

/* Compact working surface and device-independent answer markers. */
header{padding-block:20px}main{padding-top:24px}.intro{margin-bottom:22px}h1{font-size:30px}.intro .eyebrow{color:#f4cb6b}.workspace{grid-template-columns:minmax(290px,360px) minmax(0,1fr)}.boardPanel{max-width:650px;width:100%}.board{gap:clamp(3px,.65vw,6px);padding:8px}.cell{min-width:0;min-height:0;overflow:hidden;aspect-ratio:auto;line-height:1}.cell.lit{font-size:inherit;box-shadow:inset 0 0 0 2px #fff3b2}.flame{position:absolute;width:78%;height:78%;left:50%;top:50%;transform:translate(-50%,-50%);display:block;pointer-events:none;filter:drop-shadow(0 1px 2px #69331880)}.board.empty{display:flex;align-items:center;justify-content:center;border:1px dashed #3b4b61;background:linear-gradient(135deg,#19283b,#0e1623);aspect-ratio:1}.board.empty:after{content:'上传截图后，在这里查看点灯位置';color:#a9b7ca;max-width:200px;text-align:center;line-height:1.8;font-size:16px;padding:16px}details{margin-top:20px;border-top:1px solid #334057;padding-top:16px}summary{cursor:pointer;font-size:14px;color:#c8d4e6;min-height:32px}#status{background:#1b293c;border-left:3px solid #fbbf24;border-radius:4px;padding:12px}.upload{min-height:150px}.upload small{text-align:center;line-height:1.6}.boardHead .eyebrow{font-size:13px;letter-spacing:1px}.resultHead{margin-bottom:14px}#badge{white-space:nowrap}.hint{font-size:14px}.cell.lit:after{box-shadow:none}.local{font-size:14px}@media(max-width:760px){.workspace{grid-template-columns:1fr}.intro{margin-bottom:16px}h1{font-size:26px}.intro .eyebrow{display:none}main{padding-top:18px}.panel{border-radius:16px}.upload{min-height:114px;margin:16px 0;padding:12px}.boardPanel{max-width:none}.board{gap:4px;padding:6px}.cell.lit{font-size:inherit}.primary{margin-top:16px}.board.empty{aspect-ratio:2}.brand small{font-size:14px}}

.upload{cursor:default}.upload:focus-visible,.upload:focus-within{outline:2px solid #fbbf24;outline-offset:3px;border-color:#fbbf24}.fileChoice{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:9px 16px;margin-top:6px;border:1px solid #607087;border-radius:9px;color:#e8edf5;font-size:14px;cursor:pointer;background:#25344a}.fileChoice:hover{border-color:#fbbf24}.fileChoice:focus-visible{outline:2px solid #fbbf24;outline-offset:2px}

.pasteButton{background:#fbbf24;border-color:#fbbf24;color:#1b1607;font-weight:700;min-width:190px;margin-top:8px}.upload .fileChoice{margin-top:2px}

#source{touch-action:pan-y;cursor:default}#source.editing{touch-action:none;cursor:crosshair;outline:2px solid #fbbf24}#editCrop{margin-bottom:12px}#editCrop[aria-pressed="true"]{border-color:#fbbf24;color:#fbbf24}