:root{color-scheme:dark;--ink:#f3f7ff;--muted:#b2c3d9;--mint:#83f2c8;--line:#2e4059}*{box-sizing:border-box}body{margin:0;background:#0a1424;color:var(--ink);font:17px/1.5 system-ui,sans-serif}button,input,select{font:inherit}button,summary,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:1px solid var(--line);background:#1a2c45;color:var(--ink);border-radius:14px;padding:12px 17px;min-height:48px;font-weight:700}button:hover{border-color:var(--mint);background:#253c55}button:focus-visible,summary:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--mint);outline-offset:4px}a{color:var(--mint);text-decoration:none}header{max-width:1200px;margin:auto;padding:18px 26px;display:flex;align-items:center;justify-content:space-between;gap:15px}header b{color:var(--muted);font-size:15px;letter-spacing:3px}header button{font-size:14px;background:transparent}main{max-width:1100px;margin:auto;padding:15px 26px 45px}.welcome{text-align:center;margin-bottom:22px}h1{font-size:44px;letter-spacing:-1.5px;margin:10px 0 4px;line-height:1.2}h1 span{color:var(--mint)}.welcome p{margin:7px 0;color:var(--muted);font-size:18px}h2{font-size:24px;line-height:1.25;margin:0 0 20px}h3{font-size:17px;margin:23px 0 12px}p{color:var(--muted)}.quick-guide{display:flex;justify-content:center;gap:25px;flex-wrap:wrap;margin-bottom:26px;font-size:14px;color:var(--muted)}.quick-guide span{display:flex;align-items:center;gap:8px}.quick-guide b{border-radius:50%;background:#224639;color:var(--mint);width:28px;height:28px;display:inline-grid;place-items:center}.play-layout{display:grid;grid-template-columns:1fr 1fr;align-items:start;gap:22px}.panel{background:#121f32;border:1px solid var(--line);border-radius:24px;padding:25px}.source-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.source{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:118px;gap:7px;background:#1a2c45}.symbol{font-size:39px;line-height:1.2}.source.selected,.video-card.selected{background:#204939;border:2px solid var(--mint);padding:11px 16px}.source.selected:after,.video-card.selected:after{content:'';position:absolute;right:10px;top:9px;width:12px;height:7px;border-left:2px solid var(--mint);border-bottom:2px solid var(--mint);transform:rotate(-45deg)}.source b{font-size:16px}.video-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.video-card{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;text-align:center;min-height:115px}.video-card b{font-size:16px}.video-card small{font-size:12px;color:var(--muted)}.video-card .symbol{font-size:33px}.extra{border-top:1px solid var(--line);margin-top:22px;padding-top:15px}summary{cursor:pointer;font-weight:700;padding:9px 0;min-height:44px;color:#cee6fa}details[open]>summary{margin-bottom:12px}details details{margin-top:14px}.hint{font-size:13px;color:var(--muted)}label{display:block;font-size:15px;color:#d4e4f6;margin:13px 0 8px}input[type=url],input[type=search],input:not([type]),select{width:100%;min-width:0;border:1px solid #496078;border-radius:12px;background:#0a1424;color:white;padding:11px;min-height:48px}input[type=range]{display:block;width:100%;accent-color:var(--mint);margin:15px 0;min-height:26px}input[type=checkbox]{width:19px;height:19px;vertical-align:middle;margin-right:6px;accent-color:var(--mint)}.input-row{display:flex;gap:8px;align-items:center}.input-row button{flex-shrink:0}.file-button{background:#203b50;border:1px solid #54738b;padding:12px;border-radius:12px}.file-button input{display:block;width:100%;font-size:13px;margin-top:12px}.stage{padding:0;overflow:hidden}.preview-wrap{position:relative;aspect-ratio:1.35;background:#000;display:grid;place-items:center}.preview-wrap canvas{height:100%;width:100%;object-fit:contain;max-height:310px}.preview-tag{position:absolute;top:14px;left:18px;font-size:10px;letter-spacing:1.5px;font-weight:800;color:#91a5bc}.preview-description{padding:23px}.preview-description h2{margin-bottom:7px}.preview-description>p{font-size:14px;margin-top:4px}.motion-row{display:flex;gap:12px;align-items:center;margin:14px 0}.motion-row label{white-space:nowrap;font-size:14px;margin:0}.motion-row select{font-size:15px}.quiet{font-size:14px;min-height:44px;padding:9px 15px}.start-box{border-top:1px solid var(--line);margin-top:20px;padding-top:8px}.start-box>p:first-child{color:#e0ecfa;font-size:16px}.primary{background:var(--mint);color:#082b1e;border:0;font-size:20px;min-height:58px;width:100%;border-radius:16px}.primary:hover{background:#b1ffe0;color:#082b1e}#calibrationState{margin-bottom:0;font-size:12px}.text-button{padding:5px 0;background:none;border:0;min-height:44px;font-size:13px;color:var(--mint)}.settings{max-width:100%;font-size:15px}.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px 25px}#status{font-size:15px;color:var(--mint);margin:16px 0;min-height:0}#status:empty{display:none}dialog{max-width:min(640px,calc(100vw - 24px));width:640px;background:#14243a;color:var(--ink);border:1px solid #456079;border-radius:22px;padding:26px}dialog::backdrop{background:#020a16df}.dialog-close{display:block;margin-left:auto;margin-bottom:18px;font-size:14px}dialog p,dialog li{font-size:16px}.help-list{padding-left:24px}.help-list li{margin:15px 0;color:var(--muted)}.help-list b{color:white}.mold{width:100%;max-height:190px}.mold text{fill:white;font:14px system-ui}fieldset{border:1px solid var(--line);border-radius:12px}.quiz{margin:5px;font-size:14px}iframe{width:100%;height:280px;border:0;margin-top:15px}#rulerArea{height:100px;display:flex;align-items:center;justify-content:center;background:#091320;border-radius:12px;overflow:hidden;margin:20px 0;padding:15px}#rulerLine{position:relative;flex:none;height:2px;background:var(--mint);width:189px}#rulerLine i{position:absolute;left:0;top:50%;transform:translate(-50%,-50%);width:2px;height:28px;background:var(--mint)}#rulerLine i:last-child{left:100%}#rulerLine span{position:absolute;left:50%;top:17px;transform:translateX(-50%);color:var(--mint);white-space:nowrap;font-size:14px}.ruler-controls{display:flex;gap:15px;align-items:center}.ruler-controls input{flex:1;min-width:0}.ruler-controls button{font-size:24px;min-width:50px}#saveCalibration{margin-top:12px}#projection{position:fixed;inset:0;background:#000;z-index:9999;touch-action:none}#screen{width:100%;height:100%;display:block}.projection-controls{position:absolute;top:12px;left:12px;right:12px;display:flex;gap:9px;align-items:flex-start;flex-wrap:wrap}.projection-controls button,.projection-controls summary{background:#101820e6;color:#deebf5;font-size:14px;padding:11px 15px;border:1px solid #364c59;border-radius:12px;min-height:48px}.projection-controls details{background:#101820e6;border-radius:12px}.projection-controls details button{display:block;margin:8px}.projection-controls details p{font-size:12px;padding:0 12px}.projection-controls summary{list-style:none}.projection-controls summary:after{content:' ▾'}body.projecting{overflow:hidden}[hidden]{display:none!important}@media(max-width:760px){header{padding:12px 16px}header b{display:none}header button{font-size:13px}main{padding:10px 16px 30px}h1{font-size:36px}.welcome p{font-size:16px}.quick-guide{gap:8px;justify-content:flex-start;max-width:320px;margin:20px auto}.quick-guide span{width:100%;font-size:14px}.play-layout{grid-template-columns:1fr;gap:18px}.panel{padding:20px}.stage{padding:0}.source-grid{grid-template-columns:repeat(4,1fr);gap:7px}.source{min-height:96px;padding:10px 4px}.source b{font-size:12px}.source .symbol{font-size:30px}.source.selected{padding:9px 3px}.source.selected:after{right:6px;top:6px}.settings-grid{grid-template-columns:1fr}.preview-wrap{aspect-ratio:1.5}.preview-wrap canvas{max-height:270px}.preview-description{padding:20px}dialog{padding:20px}.projection-controls{left:8px;top:8px;gap:6px}.projection-controls button,.projection-controls summary{font-size:12px;padding:10px 12px}.video-card{min-height:106px}}

.holo-art{width:50px;height:50px;flex:none;display:block}
.video-art .holo-art{width:44px;height:44px}
.source[data-source=drawing]{grid-column:1/-1;flex-direction:row;min-height:62px;gap:12px}
.source[data-source=drawing] .holo-art{width:38px;height:38px}
#drawingDialog{max-height:calc(100dvh - 24px);overflow:auto}
.drawing-header,.drawing-options,.drawing-actions{display:flex;align-items:center;flex-wrap:wrap;gap:10px}
.drawing-header{justify-content:space-between}
.drawing-header h2{margin:0}
.drawing-tools{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:7px;margin:14px 0 4px}
.drawing-tools button{min-width:0;min-height:52px;padding:6px;display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:4px;font-size:14px}
.drawing-tools button[aria-pressed=true]{border-color:var(--mint);background:#204939}
.drawing-tools .holo-art{width:27px;height:27px}
#drawingHint{margin:6px 0}
.drawing-options label{display:flex;align-items:center;gap:6px;font-size:15px;min-width:0}
.drawing-options input[type=color]{width:42px;height:36px;padding:2px}
.drawing-options input[type=range]{width:105px}
#drawingCanvas{display:block;width:min(100%,384px);height:auto;aspect-ratio:1;margin:14px auto;background:black;border-radius:12px;outline:2px solid #456079;touch-action:none;cursor:crosshair}
.drawing-actions button{min-height:44px}
.drawing-actions .primary{width:auto;flex:1;font-size:17px}
.drawing-actions button:disabled{opacity:.5;cursor:default}
#drawingStatus:empty{display:none}
@media(max-width:550px){.source .holo-art{width:37px;height:37px}.drawing-actions .primary{flex-basis:100%}}

main{max-width:1450px;padding-inline:clamp(12px,2.5vw,32px)}
.play-layout{grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:clamp(12px,2vw,26px)}
.choices{padding:clamp(12px,2vw,24px)}
.choices h2{margin-bottom:14px}
.choices h3{margin:18px 0 10px}
.source-grid,.video-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.choices :is(.source,.video-card){display:flex;position:relative;flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;padding:0;min-width:0;min-height:0;overflow:hidden;background:#14243a;border:2px solid #304763;border-radius:16px}
.choices :is(.source,.video-card):hover{border-color:#92c8e1;background:#223a54}
.choices :is(.source,.video-card).selected{border-color:var(--mint);background:#214638}
.choices :is(.source,.video-card).selected:after{right:12px;top:12px;filter:drop-shadow(0 1px 2px black)}
.choices .holo-cover{width:100%;height:clamp(76px,12vw,146px);display:block;object-fit:contain;background:#050f1b}
.choices :is(.source,.video-card)>b{display:grid;place-items:center;min-height:44px;padding:6px;font-size:clamp(13px,1.4vw,17px);line-height:1.2}
.choices .video-card small{padding:0 6px 6px}
.stage .preview-wrap{aspect-ratio:auto;height:clamp(190px,36dvh,360px);grid-template-rows:minmax(0,1fr)}
.stage .preview-wrap canvas{width:100%;height:100%;max-height:none;object-fit:contain}
.stage .preview-tag{background:#111f30;color:#cfe3f4;border-radius:7px;padding:4px 7px;letter-spacing:.02em;pointer-events:none}
.stage .preview-description{padding:clamp(12px,2vw,24px)}
.stage .start-box{margin-top:12px}
.stage #project{min-height:50px}
@media(min-width:790px) and (min-height:700px){.stage{position:sticky;top:12px}}
@media(max-width:789px){.play-layout{grid-template-columns:minmax(0,1fr)}}
@media(max-width:390px){.source-grid,.video-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}

.choices :is(.source,.video-card){align-items:center;justify-content:center;padding:8px 4px 3px}
.choices .holo-cover{width:clamp(62px,8vw,100px);height:clamp(62px,8vw,100px);background:transparent;object-fit:contain}
.choices :is(.source,.video-card)>b{width:100%;text-align:center}
.drawing-tools{grid-template-columns:repeat(4,minmax(0,1fr));flex-wrap:wrap}
.drawing-tools button{min-width:0;padding:6px}