:root{--ink:#244b41;--muted:#6c7d6e;--paper:#f6f4e9;--line:#d9dfce;--green:#326e57;--lime:#dbeaa3;--font:Inter,'Noto Sans TC','PingFang TC','Microsoft JhengHei',sans-serif}*{box-sizing:border-box}html,body{width:100%;height:100%;margin:0;overflow:hidden}body{font-family:var(--font);color:var(--ink);background:#c6d4ce}button,a{touch-action:manipulation;-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;border:0;cursor:pointer}button:disabled{opacity:.45;cursor:default}button:focus-visible,a:focus-visible{outline:3px solid #e3a642;outline-offset:4px}button[hidden],[hidden]{display:none!important}a{color:inherit;text-decoration:none}#scene{position:fixed;inset:0;width:100%;height:100%;display:block;touch-action:none}#loading{position:fixed;inset:0;z-index:30;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:18px;background:#d9e1d3;transition:opacity .5s}#loading.dismiss{opacity:0;pointer-events:none}#loading strong{font-size:17px;font-weight:500}#loading small{font-size:11px;letter-spacing:3px;color:#758774}.spinner{height:35px;width:35px;border:2px solid #bdcbb6;border-top-color:#4b765d;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.toolbar{position:absolute;z-index:5;top:0;left:0;right:0;padding:26px 35px;display:flex;justify-content:space-between;align-items:center;pointer-events:none}.toolbar>*{pointer-events:auto}.brand{display:flex;gap:11px;align-items:center;text-shadow:0 1px 18px #f8f6e7}.brand>span{font-size:37px;line-height:1}.brand b{font-size:17px;letter-spacing:2px;display:flex;flex-direction:column;gap:5px}.brand small{font:8px monospace;letter-spacing:2px}.tools{display:flex;gap:8px;align-items:center;background:#f5f4e7e8;border:1px solid #ffffffa6;border-radius:8px;padding:5px;box-shadow:0 5px 30px #32534209}.tools button{height:36px;min-width:38px;background:none;border-radius:5px;font-size:18px}.tools button:hover{background:#e1e7d6}.tools #sound{font-size:17px;padding:0 10px}.tools #sound span{font-size:10px;margin-left:4px}.live{font-size:10px;letter-spacing:1px;margin:0 12px;white-space:nowrap}.live i,.eyebrow i{display:inline-block;width:6px;height:6px;border-radius:50%;background:#6e9971;margin-right:7px;box-shadow:0 0 0 3px #7c9e6712}.home-panel{position:absolute;z-index:4;left:5%;top:50%;transform:translateY(-47%);width:355px;background:#f6f4e9f5;box-shadow:0 14px 70px #24443a24;border:1px solid #fff8;border-radius:10px;padding:29px 29px 0;max-height:calc(100dvh - 145px);overflow:auto;scrollbar-width:thin}.eyebrow{font:9px monospace;letter-spacing:1.8px;color:#668168;display:flex;align-items:center}.home-time{font:12px monospace;color:#8a967e;letter-spacing:1px;margin-top:25px}.home-time span{font:10px var(--font);letter-spacing:0;margin-left:9px}h1{font-size:46px;font-weight:650;line-height:1.2;letter-spacing:-1px;margin:12px 0 18px}h1 span{color:#6a8c62}.lead{font-size:19px;line-height:1.65;font-weight:500;letter-spacing:1px;margin:0 0 15px}.home-description{font-size:12px;line-height:1.95;color:var(--muted);margin:0 0 24px}.lesson-info{display:flex;gap:14px;border-top:1px solid var(--line);padding:18px 0;align-items:center}.lesson-info>span{font:23px Georgia,serif;color:#8ca274}.lesson-info strong{display:block;font-size:13px;font-weight:500;margin-bottom:7px}.lesson-info small{font-size:9px;letter-spacing:1px;color:#859078}.primary{background:var(--ink);color:#f4f3de;border-radius:5px;padding:15px 19px;font-size:13px;display:flex;align-items:center;justify-content:space-between;gap:25px;min-height:48px}.primary:hover{background:#356b53}.primary>span{font-size:21px}#start{width:100%;font-size:15px}.tiny{text-align:center;font-size:9px;letter-spacing:.5px;color:#87927c;margin:12px 0 23px}.home-foot{padding:17px 0;display:flex;justify-content:space-between;gap:10px;border-top:1px solid var(--line);align-items:center}.home-foot span{font-size:9px;line-height:1.85;color:#7b8978}.home-foot button{font-size:9px;white-space:nowrap;background:none;padding:8px 0}#game-top{position:absolute;top:112px;left:36px;right:36px;display:flex;justify-content:space-between;pointer-events:none}.chapter{display:flex;flex-direction:column;gap:10px}.chapter span{font:9px monospace;letter-spacing:2px;color:#657c69}.chapter strong{font-size:18px;font-weight:500;letter-spacing:1px}.time{background:#f6f4e8e8;border-radius:6px;border:1px solid #fff9;display:flex;flex-direction:column;gap:5px;padding:12px 17px;text-align:right}.time b{font:22px monospace;letter-spacing:2px}.time span{font-size:9px;color:#7b8b73}.view-controls{position:absolute;right:30px;bottom:135px;display:flex;flex-direction:column;gap:1px;border-radius:6px;overflow:hidden;box-shadow:0 6px 20px #38534512}.view-controls button{height:36px;width:38px;font-size:20px;background:#f5f4e9e8}.view-controls button:hover{background:#e1e7d6}.scene-caption{position:absolute;bottom:19px;left:35px;right:35px;display:flex;justify-content:space-between;color:#5c7665;font:8px monospace;letter-spacing:2px;pointer-events:none}.scene-caption span:last-child{letter-spacing:1px;font-family:var(--font)}#mission-bar{position:absolute;bottom:48px;left:50%;transform:translateX(-50%);width:min(710px,calc(100% - 70px));padding:13px 15px;display:flex;align-items:center;gap:15px;border:1px solid #ffffffe0;border-radius:9px;background:#f6f4e9f2;box-shadow:0 8px 45px #224f3b24}.mission-icon{height:33px;width:33px;display:grid;place-items:center;background:#e6d08c;border-radius:50%;font-size:20px;font-weight:650;flex-shrink:0}.mission-copy{display:flex;flex-direction:column;gap:7px;flex:1;min-width:0}.mission-copy small{font-size:9px;color:#839074;letter-spacing:1px}.mission-copy strong{font-size:13px;font-weight:500}.mission-bar .primary{font-size:11px}#go{padding:10px 16px;min-height:45px;font-size:11px;gap:18px}#interact{padding:12px 5px;background:none;font-size:12px;min-height:44px;white-space:nowrap}kbd{font:10px monospace;display:inline-block;border:1px solid #bac9b4;padding:2px 4px;border-radius:3px;margin-left:3px}#speech-hint{position:absolute;bottom:150px;left:50%;transform:translateX(-50%);background:#264e43e8;color:#edf3d9;padding:11px 18px;border-radius:6px;box-shadow:0 6px 30px #244a3c24;font-size:11px;pointer-events:none}#toast{position:absolute;bottom:155px;left:50%;transform:translate(-50%,10px);opacity:0;transition:.25s;background:#f8f6e9;padding:12px 18px;max-width:80%;border-radius:6px;font-size:12px;box-shadow:0 8px 30px #244d3d30;z-index:12;pointer-events:none}#toast.visible{opacity:1;transform:translate(-50%,0)}#dpad{position:absolute;left:25px;bottom:140px;display:grid;grid-template-columns:44px 44px 44px;grid-template-rows:44px 44px;gap:3px;user-select:none}#dpad button{background:#f5f4e9c9;border:1px solid #f9fff1a0;border-radius:5px;font-size:15px;touch-action:none}#dpad button:first-child{grid-column:2}#dpad button:nth-child(2){grid-row:2;grid-column:1}#dpad button:nth-child(3){grid-row:2;grid-column:2}#dpad button:nth-child(4){grid-row:2;grid-column:3}#dpad button:active{background:#d9e99d}dialog{position:fixed;inset:0 auto 0 35px;margin:auto;width:380px;max-width:calc(100% - 28px);max-height:calc(100dvh - 190px);background:#f6f4ebf8;color:var(--ink);border:1px solid #fff;border-radius:10px;padding:29px;box-shadow:0 20px 80px #123d3c30;scrollbar-width:thin}dialog::backdrop{background:#183b3015}#close-dialog{position:absolute;right:10px;top:8px;background:none;font-size:25px;width:35px;height:35px;border-radius:5px}dialog h2{font-size:25px;line-height:1.45;font-weight:600;margin:20px 0 15px;letter-spacing:-.5px}dialog p{font-size:12px;line-height:1.95;color:#657760}dialog .kicker{font:9px monospace;color:#849372;letter-spacing:1.3px;padding-right:18px}.speaker{display:flex;align-items:center;gap:10px;margin:18px 0 12px}.speaker-avatar{height:36px;width:36px;border-radius:6px;background:#dfc59a;display:grid;place-items:center;font-size:18px}.speaker strong{font-size:12px;font-weight:600}.speaker small{display:block;font-size:9px;color:#88937c;margin-top:4px}.speech{font-size:16px!important;line-height:1.75!important;color:#345346!important;margin:14px 0!important;font-weight:500}.evidence{background:#e8ecdf;border:1px solid #d4dfca;padding:12px 14px;border-radius:6px;margin:15px 0}.evidence small{font-size:9px;color:#8b967c;letter-spacing:1px}.code{background:#2f5148;color:#e6edd5;padding:13px;border-radius:5px;font:11px/1.9 monospace;white-space:pre-wrap;margin:12px 0}.actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:18px}.actions button{min-height:44px;border:1px solid #cbd6be;padding:11px 13px;border-radius:5px;background:#f5f5e8;font-size:11px}.actions .solid{background:var(--ink);color:#f4f4de;border-color:var(--ink)}.actions .solid:hover{background:#396f55}.choices{display:grid;gap:9px;margin:18px 0}.choice{background:#e9eedf;text-align:left;border:1px solid #d0dbc4;border-radius:6px;padding:13px;font-size:12px;line-height:1.8;min-height:48px}.choice:hover{background:#dfebce;border-color:#93af7e}.feedback{padding:15px;background:#e4ecd8;border-left:3px solid #91ae7e;border-radius:4px;color:#496344;font-size:12px;line-height:1.95}.note{font-size:9px!important;color:#909a82!important;line-height:1.8!important}.trace{padding:12px;background:#ecebdc;border-radius:5px;font-size:12px;line-height:1.8}.lesson-card{padding:15px 0;border-bottom:1px solid var(--line)}.lesson-card h3{font-size:13px;font-weight:600}.lesson-card p{font-size:11px}.check{color:#6a8e4e}.sandbox{height:108px;background:#e6ecdd;border:1px solid #ced9c2;border-radius:6px;position:relative;margin:12px 0;overflow:hidden}.sandbox-grid{position:absolute;inset:15px;background-image:linear-gradient(#c7d4bf66 1px,transparent 1px),linear-gradient(90deg,#c7d4bf66 1px,transparent 1px);background-size:35px 35px}.bot{position:absolute;left:45px;top:37px;width:28px;height:30px;background:#699b86;border:3px solid #f1e7c8;border-radius:5px;color:#fff7cc;display:grid;place-items:center;transition:transform .6s}.sandbox .start-dot{position:absolute;left:47px;top:70px;width:24px;height:2px;background:#899f7c}.sandbox-label{position:absolute;bottom:8px;right:11px;font-size:8px;color:#7e9075}.settings-group{margin:20px 0}.settings-group>strong{font-size:12px}.setting-row{display:flex;gap:9px;margin:10px 0}.setting-row button{padding:12px;border:1px solid #c5d3b9;border-radius:5px;background:#edf0e3;font-size:12px;min-height:44px}.setting-row button[aria-pressed=true]{background:#d7e6bd;border-color:#7f9b6c}.noscript{position:fixed;inset:0;display:grid;place-items:center;background:#f5f4e8;padding:40px;z-index:50}#print-area{display:none}.fallback{position:fixed;inset:0;z-index:40;background:#e3e9dc;display:flex;align-items:center;justify-content:center;padding:25px}.fallback>div{max-width:460px}.fallback h1{font-size:30px}.fallback p{font-size:14px;line-height:1.9}.fallback button{margin-top:15px}
@media(min-width:1600px){.home-panel{left:7%;width:380px;padding:35px 33px 0}h1{font-size:52px}.home-description{font-size:13px}.lead{font-size:20px}.home-time{margin-top:28px}.lesson-info{padding:23px 0}.home-foot{padding:22px 0}.tiny{margin-bottom:27px}}
@media(max-height:760px) and (min-width:761px){.home-panel{top:51%;padding-top:22px;max-height:calc(100dvh - 115px)}h1{font-size:38px;margin:10px 0}.home-time{margin-top:17px}.lead{font-size:16px;margin-bottom:8px}.home-description{margin-bottom:14px}.lesson-info{padding:13px 0}.tiny{margin:9px 0 14px}.home-foot{padding:13px 0}.toolbar{padding:19px 30px}dialog{max-height:calc(100dvh - 150px)}}
@media(max-width:760px){.toolbar{padding:18px 17px}.brand>span{font-size:29px}.brand b{font-size:13px;letter-spacing:1px}.brand small{font-size:6px}.tools{gap:0;padding:3px}.tools .live{display:none}.tools button{height:33px;min-width:33px;font-size:16px}.tools #sound{padding:0 6px}.tools #sound span{display:none}.home-panel{left:16px;right:16px;top:auto;bottom:37px;transform:none;width:auto;padding:22px 24px 0;max-height:60dvh;background:#f6f4e9f0}.eyebrow{font-size:8px}.home-time{margin-top:15px;font-size:11px}h1{font-size:34px;line-height:1.15;margin:10px 0;letter-spacing:-.5px}h1 br{display:none}.lead{font-size:13px;line-height:1.7;margin:0 0 8px}.lead br{display:none}.home-description{font-size:11px;margin-bottom:12px;line-height:1.8}.lesson-info{padding:12px 0;gap:12px}.lesson-info>span{font-size:20px}.lesson-info strong{font-size:11px;margin-bottom:5px}.lesson-info small{font-size:8px}.primary{min-height:46px;padding:12px 16px}#start{font-size:13px}.tiny{margin:9px 0 13px;font-size:8px}.home-foot{padding:12px 0}.home-foot span{font-size:8px}.home-foot button{font-size:8px}body:not(.playing) .view-controls{display:none}#game-top{top:87px;left:20px;right:20px}.chapter span{font-size:8px}.chapter strong{font-size:14px}.chapter{gap:8px}.time{padding:8px 11px}.time b{font-size:18px}.time span{font-size:8px}.scene-caption{left:19px;right:19px;bottom:14px;font-size:6px;letter-spacing:1px}.scene-caption span:last-child{font-size:7px}#mission-bar{bottom:35px;gap:10px;padding:11px;width:calc(100% - 28px)}.mission-icon{width:25px;height:25px;font-size:16px}.mission-copy small{font-size:8px}.mission-copy strong{font-size:10px;line-height:1.5}.mission-copy{gap:4px}#go{padding:9px 10px;font-size:10px;gap:8px;white-space:nowrap;min-height:44px}#go span{font-size:15px}#interact{position:absolute;right:0;bottom:84px;background:#f6f4e8eb;border:1px solid #fff;border-radius:6px;padding:12px 13px;min-width:90px;font-size:11px}#interact:disabled{opacity:.5}.view-controls{right:15px;bottom:185px;flex-direction:row}.view-controls button{height:35px;width:34px;font-size:17px}#speech-hint{bottom:140px;font-size:10px;left:62%;white-space:nowrap;padding:9px 12px}#dpad{left:16px;bottom:123px;grid-template-columns:42px 42px 42px;grid-template-rows:42px 42px;gap:3px}#toast{bottom:229px;font-size:11px;max-width:85%;width:max-content}dialog{left:12px;right:12px;top:auto;bottom:116px;margin:0 auto;width:auto;max-width:520px;max-height:calc(100dvh - 260px);padding:23px}dialog h2{font-size:22px;margin-top:15px}.speech{font-size:14px!important}dialog p{font-size:11px}.code{font-size:10px;padding:11px}.choice{font-size:11px;padding:12px}.speaker{margin:13px 0 10px}.speaker-avatar{width:31px;height:31px}.evidence{padding:10px}.dialog-open #dpad,.dialog-open #speech-hint{visibility:hidden}.dialog-open .view-controls{visibility:hidden}.feedback{font-size:11px}.actions{gap:7px}.actions button{font-size:10px;min-height:44px}.note{font-size:8px!important}.sandbox{height:95px}}
@media(max-width:350px){.home-panel{padding:18px 18px 0}h1{font-size:28px}.home-time span{font-size:8px}.lesson-info small{font-size:7px}.home-foot span{font-size:7px}.home-description{font-size:10px}#interact{min-width:75px}.mission-copy strong{font-size:9px}#go{font-size:9px}.mission-icon{display:none}}
@media(max-height:660px) and (max-width:760px){.home-panel{max-height:70dvh;padding-top:16px}.home-description{display:none}h1{font-size:28px}.lead{font-size:12px}.home-time{margin-top:10px}.home-foot{display:none}.tiny{margin-bottom:12px}dialog{bottom:95px;max-height:calc(100dvh - 170px)}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media print{body{overflow:visible;height:auto;background:white}body>*{display:none!important}#print-area{display:block!important;color:#111;padding:20px;font:13px/1.8 sans-serif}#print-area h1{font-size:26px}#print-area h2{font-size:18px;margin-top:24px}#print-area article{break-inside:avoid;margin-bottom:25px}}

.dialog-open #speech-hint{visibility:hidden}

/* Reading-first dialogue: a large, centred surface with an independent scroll area. */
dialog{inset:0;margin:auto;width:1040px;max-width:calc(100vw - 48px);max-height:none;padding:0;border-radius:16px;background:#f8f7effc;overflow:hidden;box-shadow:0 24px 100px #173a3b55}
dialog::backdrop{background:#173a3b66;backdrop-filter:none}
#dialog-body{max-height:calc(100dvh - 96px);overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;padding:40px 44px 42px}
#close-dialog{right:12px;top:12px;width:46px;height:46px;z-index:3;font-size:30px;background:#f8f7eff2;border:1px solid #d9e0d0;border-radius:8px}
#close-dialog:hover{background:#e5ecd9}
dialog .kicker{font-size:11px;letter-spacing:1.5px;line-height:1.6;padding-right:36px;margin-bottom:20px}
dialog h2{font-size:32px;line-height:1.4;margin:18px 0 20px;letter-spacing:-.5px;font-weight:600}
dialog p{font-size:17px;line-height:1.85;margin:18px 0}
dialog .speech{font-size:21px!important;line-height:1.75!important;font-weight:500;margin:16px 0 20px!important}
.conversation-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:34px;align-items:start}
.conversation-copy{min-width:0}.conversation-copy h2{margin-top:20px}
.speaker{gap:13px;margin:0 0 17px}.speaker-avatar{width:48px;height:48px;font-size:25px;border-radius:9px}.speaker strong{font-size:18px}.speaker small{font-size:12px;line-height:1.6;margin-top:5px}
.evidence{padding:20px;margin:20px 0;background:#edf0e5;border:1px solid #d5dfc8;border-radius:10px;min-width:0}
.conversation-grid .evidence{margin:0}.evidence>small{display:block;font-size:12px;letter-spacing:1px;color:#718565;line-height:1.6;margin-bottom:18px}
.block-collection{display:grid;gap:22px;min-width:0}.scratch-example{margin:0;min-width:0}.scratch-example figcaption{font-size:15px;line-height:1.6;font-weight:600;color:#3a6150;margin-bottom:12px}
.block-stage{max-width:100%;overflow-x:auto;overscroll-behavior-x:contain;padding:12px 8px 16px;scrollbar-width:thin;border:1px solid #d8e1d0;background:#fbfcf6;border-radius:7px}
.block-stage svg{display:block;max-width:none;height:auto}.block-stage .sb3-label{font-family:'Helvetica Neue','Noto Sans TC','PingFang TC','Microsoft JhengHei',sans-serif}
.block-text{margin-top:10px;color:#72836b}.block-text summary{font-size:12px;cursor:pointer;line-height:1.8;min-height:28px;padding:4px 0}.block-text pre{font:14px/1.8 var(--font);white-space:pre-wrap;margin:8px 0;background:#f8f9f1;border-radius:5px;padding:10px;color:#486346}
#dialog-body>.evidence .block-collection{grid-template-columns:repeat(2,minmax(0,1fr))}
.actions{gap:12px;margin-top:24px}.actions button{font-size:16px;line-height:1.5;min-height:52px;padding:13px 18px;border-radius:7px}.actions .solid{font-weight:500}
.choices{gap:13px;margin:24px 0}.choice{font-size:17px;line-height:1.75;min-height:64px;padding:18px 21px;border-radius:9px}
.feedback{font-size:18px;line-height:1.9;padding:22px 24px;border-radius:8px}
.trace{font-size:17px;line-height:1.85;padding:18px;border-radius:8px;margin:18px 0}
.lesson-card{padding:20px 0}.lesson-card h3{font-size:19px;line-height:1.6}.lesson-card p{font-size:17px}
.note{font-size:13px!important;line-height:1.8!important}.settings-group>strong{font-size:18px}.setting-row{gap:12px;margin:18px 0}.setting-row button{font-size:16px;min-height:52px;padding:14px 18px}
.sandbox{height:160px;margin:0 0 17px}.sandbox-grid{inset:20px;background-size:40px 40px}.sandbox .bot{top:55px;left:40px;width:38px;height:40px;font-size:24px}.sandbox .start-dot{left:42px;top:100px;width:32px}.sandbox-label{font-size:11px;right:13px;bottom:11px}
body.dialog-open .view-controls,body.dialog-open #mission-bar,body.dialog-open #dpad,body.dialog-open #speech-hint{visibility:hidden}
@media(max-width:900px){dialog{max-width:calc(100vw - 32px);width:760px}#dialog-body{padding:32px;max-height:calc(100dvh - 48px)}.conversation-grid{grid-template-columns:1fr;gap:26px}.conversation-copy h2{max-width:660px}dialog h2{font-size:30px}.conversation-grid .block-collection{grid-template-columns:repeat(2,minmax(0,1fr))}.evidence{padding:18px}.block-stage{padding:10px 6px 12px}.speaker{margin-top:0}}
@media(max-width:600px){dialog{inset:0;max-width:calc(100vw - 20px);width:100%;border-radius:12px}#dialog-body{padding:27px 20px 25px;max-height:calc(100dvh - 24px)}#close-dialog{top:8px;right:8px;width:44px;height:44px;font-size:28px}dialog .kicker{font-size:10px;letter-spacing:1px;margin-bottom:20px;min-height:24px;padding-right:35px}dialog h2{font-size:26px;line-height:1.45;margin:14px 0 17px}dialog p{font-size:16px;line-height:1.85;margin:15px 0}dialog .speech{font-size:19px!important;line-height:1.8!important}.speaker-avatar{width:43px;height:43px;font-size:23px}.speaker strong{font-size:17px}.speaker small{font-size:12px}.conversation-grid{gap:24px}.conversation-grid .block-collection,#dialog-body>.evidence .block-collection{grid-template-columns:1fr}.evidence{padding:15px}.evidence>small{font-size:11px}.scratch-example figcaption{font-size:14px}.actions{gap:10px;margin-top:20px}.actions button{font-size:15px;min-height:50px;padding:12px 14px}.choice{font-size:16px;min-height:60px;padding:16px}.feedback{font-size:16px;line-height:1.9;padding:18px}.trace{font-size:16px;padding:15px}.lesson-card h3{font-size:18px}.lesson-card p{font-size:16px}.note{font-size:12px!important}.setting-row button{font-size:15px;padding:12px}.settings-group>strong{font-size:17px}.sandbox{height:140px}.sandbox-label{font-size:10px}.sandbox .bot{top:45px}.sandbox .start-dot{top:90px}}
@media(max-height:660px){#dialog-body{max-height:calc(100dvh - 24px)}}

/* Fit the full script first; explicit enlargement enables horizontal panning. */
.scratch-example figcaption{display:flex;gap:12px;align-items:center;justify-content:space-between}
.scratch-example figcaption>span{min-width:0}
.block-zoom{flex-shrink:0;background:#f9fbf3;border:1px solid #cbd8bf;border-radius:6px;padding:9px 11px;min-height:44px;font-size:12px;line-height:1.4}
.block-zoom:hover{background:#e0ebd3}.block-zoom[aria-pressed=true]{background:#dbe8c7;border-color:#91aa79}
.block-stage svg{max-width:100%;height:auto}.block-stage.is-zoomed svg{max-width:none}
@media(max-width:600px){.scratch-example figcaption{gap:9px}.block-zoom{font-size:11px;padding:8px 9px}}

/* One class, shared time: keep all three students visible in every consequence. */
#classroom-board{position:absolute;top:181px;left:36px;z-index:5;background:#f8f7edee;border:1px solid #fff;border-radius:7px;padding:12px 16px;font-size:13px;min-height:44px;box-shadow:0 5px 24px #244b4118}
.dialog-open #classroom-board{visibility:hidden}
.classroom-status{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:24px 0}
.student-status{background:#edf0e5;border:1px solid #d4deca;border-radius:10px;padding:18px;min-width:0;border-top:3px solid #a9ba92}
.student-status:nth-child(1){border-top-color:#d0a467}.student-status:nth-child(2){border-top-color:#7aa7af}
.student-status strong{font-size:18px}.student-status p{font-size:16px;line-height:1.85;margin:12px 0 0;color:#3d5b4b}
.student-links{display:flex;flex-wrap:wrap;gap:10px}.student-links button{min-height:48px;font-size:15px;border-radius:6px;background:#f8f9f1;border:1px solid #cbd7c0;padding:12px 15px}
.status-heading{font-size:21px;line-height:1.6;margin-top:28px}.choice strong{font-weight:500}.choice small{display:block;color:#65795c;font-size:14px;line-height:1.7;margin-top:9px}
.next-class{margin-top:30px;padding:24px;background:#e9eede;border:1px solid #cddbc2;border-radius:10px}.next-class h3{font-size:21px;line-height:1.6;margin-top:0}.next-class label{display:block;font-size:14px;line-height:1.6;margin-bottom:12px}.next-class textarea{display:block;width:100%;resize:vertical;border:1px solid #a9bf9a;border-radius:7px;padding:14px;font:16px/1.8 var(--font);color:var(--ink);background:#fcfcf6}.next-class textarea:focus{outline:3px solid #e3a642;outline-offset:2px}
@media(max-width:760px){#classroom-board{left:20px;top:155px;font-size:12px;padding:10px 13px}.chapter strong{max-width:180px;line-height:1.5}}
@media(max-width:600px){.classroom-status{grid-template-columns:1fr;gap:10px;margin:20px 0}.student-status{padding:15px}.student-status p{margin-top:7px}.status-heading,.next-class h3{font-size:19px}.choice small{font-size:13px}.next-class{padding:17px}.student-links{display:grid}.student-links button{text-align:left}}

/* Classroom HUD: thumb controls stay in the corners, away from the task. */
#game-top{display:contents}.chapter{position:absolute;top:108px;left:246px;max-width:280px;pointer-events:none}.chapter span{font-size:9px}.chapter strong{font-size:17px;line-height:1.5}
.time{position:absolute;left:max(22px,env(safe-area-inset-left));top:102px;min-width:192px;padding:17px 21px;text-align:left;background:#244b41ed;border:1px solid #e1e8d46b;color:#f8f8eb;box-shadow:0 10px 36px #244b4126;gap:8px;border-radius:12px}
.time>small{font-size:11px;letter-spacing:2px;color:#d8e2cf}.time b{font-size:40px;letter-spacing:3px;line-height:1.12}.time>strong{font-size:13px;font-weight:500;color:#d9eaa8}.time #progress{font-size:11px;color:#d0ddce}.time .clock-mode{font-size:10px;color:#b7cab8;line-height:1.5}
#classroom-board{position:static;box-shadow:none}
#joystick-wrap{position:absolute;z-index:7;left:max(22px,env(safe-area-inset-left));bottom:max(27px,env(safe-area-inset-bottom));width:150px;user-select:none;pointer-events:none;text-align:center}
#joystick{position:relative;width:150px;height:150px;border:1px solid #fcfff98c;border-radius:50%;background:radial-gradient(circle,#fbfcf325 0 45%,#f5f7ed35 46% 71%,#244b4126 72%);box-shadow:inset 0 0 25px #244b4118,0 5px 24px #244b411a;touch-action:none;pointer-events:auto;cursor:grab;display:grid;place-items:center}
#joystick.engaged{background:#f6fae747;border-color:#ecf2b5;cursor:grabbing}.joystick-cross{position:absolute;inset:24px;background:linear-gradient(transparent calc(50% - .5px),#fafff34a calc(50% - .5px),#fafff34a calc(50% + .5px),transparent calc(50% + .5px)),linear-gradient(90deg,transparent calc(50% - .5px),#fafff34a calc(50% - .5px),#fafff34a calc(50% + .5px),transparent calc(50% + .5px));border-radius:50%}
.joystick-thumb{width:64px;height:64px;border:2px solid #ffffffe0;border-radius:50%;background:linear-gradient(140deg,#faf9eae0,#d7e5d2b8);box-shadow:0 4px 16px #244b4138;pointer-events:none;will-change:transform}.joystick-help{display:block;color:#244b41;font-size:10px;letter-spacing:1px;margin-top:9px;text-shadow:0 1px 8px #fff}
#interaction-controls{position:absolute;z-index:7;right:max(24px,env(safe-area-inset-right));bottom:max(27px,env(safe-area-inset-bottom));display:flex;align-items:flex-end;gap:16px;user-select:none}
#interaction-controls button{position:static;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:4px;border-radius:50%;border:1px solid #fcfff9c9;min-width:0;box-shadow:0 6px 24px #244b4124;touch-action:manipulation;white-space:normal;padding:0;background:#eff1dfe8;color:#244b41}
#interaction-controls #interact{width:104px;height:104px;background:#bfdfa9eb;opacity:1;transition:background .15s,transform .15s;min-height:0}#interaction-controls #interact:disabled{background:#edf0e1b8;color:#768a72;cursor:default}#interaction-controls #interact:not(:disabled):active{transform:scale(.95);background:#d7edb5}#interaction-controls #classroom-board{width:70px;height:70px;background:#f1d6b0eb}#interaction-controls button b{font-size:29px;line-height:1}#interaction-controls button small{font-size:11px;line-height:1.5}#interaction-controls #classroom-board b{font-size:22px}
#live-dialogue{position:absolute;z-index:6;right:max(24px,env(safe-area-inset-right));bottom:158px;width:340px;display:flex;gap:13px;align-items:flex-start;padding:17px 18px;background:#f8f7eef5;border:1px solid #edf4de;border-radius:13px;box-shadow:0 8px 30px #244b412b;pointer-events:none}#live-dialogue:after{content:'';position:absolute;bottom:-8px;right:45px;width:14px;height:14px;transform:rotate(45deg);background:#f8f7ee;border-right:1px solid #edf4de;border-bottom:1px solid #edf4de}#live-dialogue.nearby{border-color:#9cba79;background:#f4f8e9f7}
#live-avatar{display:grid;place-items:center;width:44px;height:44px;flex-shrink:0;border-radius:50%;font-size:22px;color:#163b32;border:3px solid #fff9}#live-speaker{font-size:11px;letter-spacing:1px;color:#687f60}#live-line{font-size:16px;line-height:1.7;color:#244b41;margin:7px 0 9px;overflow-wrap:anywhere}#live-context{font-size:10px;line-height:1.6;color:#718565}
#mission-bar{bottom:35px;width:min(570px,calc(100vw - 470px));padding:12px 15px;gap:12px}#mission-bar .mission-copy strong{font-size:12px}#mission-bar .mission-copy small{font-size:9px}#mission-bar #go{white-space:nowrap;font-size:12px}
.view-controls{right:25px;bottom:362px}.view-controls button{background:#f6f5e9e6}#toast{top:100px;bottom:auto;font-size:14px;max-width:460px;width:max-content;line-height:1.7;background:#244b41f0;color:#f5f8e9;border:1px solid #e8f0cb88}#speech-hint{display:none!important}.scene-caption{bottom:8px;font-size:7px}
body.dialog-open #joystick-wrap,body.dialog-open #interaction-controls,body.dialog-open #live-dialogue{visibility:hidden}
@media(min-width:1100px){#live-dialogue{bottom:165px}.view-controls{bottom:365px}#mission-bar{width:min(570px,calc(100vw - 480px))}}
@media(max-width:760px){.toolbar{padding:16px 18px}.chapter{left:20px;top:83px;max-width:185px;gap:5px}.chapter strong{font-size:13px}.chapter span{font-size:8px}.time{top:143px;left:17px;min-width:165px;padding:12px 16px;gap:6px}.time b{font-size:32px}.time>strong{font-size:11px}.time>small{font-size:10px}.time #progress{font-size:10px}.time .clock-mode{font-size:9px}#joystick-wrap{left:max(17px,env(safe-area-inset-left));bottom:104px;width:128px}#joystick{width:128px;height:128px}.joystick-thumb{width:56px;height:56px}.joystick-help{font-size:9px}#interaction-controls{right:max(17px,env(safe-area-inset-right));bottom:113px;gap:10px}#interaction-controls #interact{width:88px;height:88px}#interaction-controls #classroom-board{width:60px;height:60px}#interaction-controls button small{font-size:10px}#interaction-controls button b{font-size:27px}#live-dialogue{width:calc(100% - 34px);max-width:350px;right:17px;bottom:272px;padding:13px 15px;gap:11px}#live-avatar{width:37px;height:37px;font-size:19px}#live-line{font-size:14px;margin:6px 0}#live-speaker{font-size:10px}#live-context{font-size:9px}#live-dialogue:after{right:37px}#mission-bar{width:calc(100% - 28px);bottom:24px;gap:9px;padding:11px}#mission-bar .mission-copy strong{font-size:11px}#mission-bar #go{font-size:11px;padding:10px 12px}.view-controls{right:17px;bottom:auto;top:153px;flex-direction:column}.view-controls button{width:34px;height:31px}#toast{top:85px;max-width:calc(100% - 34px);font-size:12px}.scene-caption span:last-child{display:none}}
@media(max-width:360px){#joystick-wrap{width:112px;left:14px}#joystick{width:112px;height:112px}.joystick-thumb{width:50px;height:50px}#interaction-controls{right:14px;gap:8px}#interaction-controls #interact{width:78px;height:78px}#interaction-controls #classroom-board{width:52px;height:52px}#interaction-controls button small{font-size:9px}#live-dialogue{bottom:250px}#mission-bar .mission-copy strong{font-size:10px}.time{min-width:151px}.chapter strong{font-size:12px}}
@media(max-height:540px) and (min-width:600px){.toolbar{padding:9px 18px}.brand>span{font-size:26px}.brand b{font-size:13px}.brand small{font-size:6px}.tools{padding:2px}.tools button{height:30px;min-width:30px}.tools .live{display:none}.chapter{display:none}.time{top:65px;left:max(17px,env(safe-area-inset-left));min-width:155px;padding:10px 14px;gap:4px}.time>small{font-size:9px}.time b{font-size:31px}.time>strong{font-size:11px}.time #progress{font-size:9px}.time .clock-mode{font-size:8px}#joystick-wrap{left:max(20px,env(safe-area-inset-left));bottom:max(17px,env(safe-area-inset-bottom));width:120px}#joystick{width:120px;height:120px}.joystick-thumb{width:52px;height:52px}.joystick-help{margin-top:5px;font-size:8px}#interaction-controls{right:max(20px,env(safe-area-inset-right));bottom:max(24px,env(safe-area-inset-bottom));gap:12px}#interaction-controls #interact{width:84px;height:84px}#interaction-controls #classroom-board{width:58px;height:58px}#interaction-controls button small{font-size:9px}#live-dialogue{right:max(20px,env(safe-area-inset-right));bottom:132px;width:290px;max-width:40vw;padding:11px 13px;gap:10px}#live-avatar{width:34px;height:34px;font-size:17px}#live-line{font-size:13px;line-height:1.6;margin:5px 0}#live-speaker{font-size:9px}#live-context{font-size:8px}#live-dialogue:after{right:34px}#mission-bar{bottom:18px;width:min(430px,calc(100vw - 370px));padding:10px;gap:8px}#mission-bar .mission-icon{display:none}#mission-bar .mission-copy small{font-size:8px}#mission-bar .mission-copy strong{font-size:10px}#mission-bar #go{font-size:10px;min-height:42px;padding:9px 10px;gap:8px}.view-controls{right:auto;left:50%;top:11px;bottom:auto;transform:translateX(-50%);flex-direction:row}.view-controls button{width:29px;height:29px;font-size:16px}#toast{top:61px;max-width:calc(100vw - 400px);font-size:12px}.scene-caption{display:none}}
@media(max-height:540px) and (max-width:680px) and (min-width:600px){#live-dialogue{width:245px;max-width:40vw}#mission-bar{width:calc(100vw - 330px)}#joystick-wrap{width:105px}#joystick{width:105px;height:105px}.joystick-thumb{width:46px;height:46px}#interaction-controls #interact{width:76px;height:76px}#interaction-controls #classroom-board{width:50px;height:50px}}
@media(prefers-reduced-motion:reduce){.joystick-thumb{will-change:auto}}

/* Portrait phones: the classroom is the primary surface, HUD stays at its edges. */
#camera-toggle{display:none}
body.dialog-open #camera-toggle{visibility:hidden}
@media(max-width:760px) and (orientation:portrait){
 .toolbar{padding:12px 14px}.brand>span{font-size:28px}.brand b{font-size:13px}.brand small{font-size:6px}.tools{padding:2px;gap:0}.tools button{width:32px;min-width:32px;height:32px}.tools #sound{padding:0}.tools #sound span,.tools .live{display:none}
 .chapter{display:none}
 .time{top:64px;left:max(12px,env(safe-area-inset-left));min-width:0;max-width:calc(100vw - 82px);height:44px;display:flex;flex-direction:row;align-items:center;gap:9px;padding:8px 11px;border-radius:9px;box-shadow:0 4px 18px #244b4118}
 .time>small,.time #progress,.time .clock-mode{display:none}.time b{display:flex;align-items:center;gap:5px;font-size:24px;line-height:1;letter-spacing:1px}.time b:before{content:'模擬';font:9px var(--font);letter-spacing:0;color:#d4dfce}.time>strong{font-size:10px;line-height:1.4;white-space:nowrap}
 #camera-toggle{position:absolute;z-index:7;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:0;right:max(12px,env(safe-area-inset-right));top:64px;width:44px;height:44px;background:#f6f5e9ed;border:1px solid #fff;border-radius:9px;padding:0}#camera-toggle>span{font-size:23px;line-height:1}#camera-toggle small{font-size:8px;line-height:1.5}
 .view-controls{display:none}.camera-expanded .view-controls{position:absolute;z-index:8;display:flex;flex-direction:row;top:116px;right:12px;left:auto;bottom:auto;transform:none;gap:3px;border:1px solid #fff;background:#f6f5e9;padding:4px;border-radius:9px}.view-controls button{width:40px;height:40px;font-size:20px}
 #joystick-wrap{left:max(14px,env(safe-area-inset-left));bottom:max(84px,calc(env(safe-area-inset-bottom) + 72px));width:96px}#joystick{width:96px;height:96px}.joystick-thumb{width:44px;height:44px}.joystick-cross{inset:17px}.joystick-help{display:none}
 #interaction-controls{right:max(14px,env(safe-area-inset-right));bottom:max(84px,calc(env(safe-area-inset-bottom) + 72px));gap:10px}#interaction-controls #interact{width:72px;height:72px}#interaction-controls #classroom-board{width:48px;height:48px}#interaction-controls button b{font-size:26px}#interaction-controls #classroom-board b{font-size:20px}#interaction-controls button small{font-size:9px;line-height:1.4}
 #live-dialogue{right:max(14px,env(safe-area-inset-right));bottom:max(170px,calc(env(safe-area-inset-bottom) + 158px));width:calc(100vw - 150px);max-width:246px;padding:8px 10px;gap:7px;border-radius:10px;box-shadow:0 4px 16px #244b411a;align-items:flex-start}#live-dialogue:after{right:28px;width:10px;height:10px;bottom:-6px}#live-avatar{width:26px;height:26px;border-width:2px;font-size:14px}#live-dialogue>div{min-width:0}#live-speaker{font-size:9px;letter-spacing:0;line-height:1.4;display:block;white-space:nowrap}#live-line{font-size:13px;line-height:1.5;margin:3px 0 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;max-height:39px}#live-context{display:none}
 #mission-bar{bottom:max(12px,env(safe-area-inset-bottom));width:calc(100% - 24px);height:56px;min-height:0;padding:6px 9px;border-radius:10px;gap:8px;box-shadow:0 4px 18px #244b4120}#mission-bar .mission-icon,#mission-label{display:none}#mission-bar .mission-copy{display:block;min-width:0}#mission-bar .mission-copy strong{display:block;font-size:11px;line-height:1.6;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}#mission-bar #go{min-height:44px;font-size:11px;padding:8px 12px;gap:10px}#mission-bar #go span{font-size:17px;line-height:1}
 #toast{top:116px;max-width:calc(100% - 24px);font-size:12px;padding:10px 13px}.scene-caption{display:none}
}
@media(max-width:360px) and (orientation:portrait){
 .time{height:40px;padding:7px 10px;gap:8px}.time b{font-size:22px}
 #joystick-wrap{width:84px}#joystick{width:84px;height:84px}.joystick-thumb{width:40px;height:40px}
 #interaction-controls{gap:8px}#interaction-controls #interact{width:64px;height:64px}#interaction-controls #classroom-board{width:44px;height:44px}
 #live-dialogue{bottom:max(156px,calc(env(safe-area-inset-bottom) + 144px));width:calc(100vw - 128px);padding:6px 9px}#live-avatar{display:none}#live-line{-webkit-line-clamp:1;max-height:20px}
 #mission-bar{height:48px;padding:2px 8px}#mission-bar #go{min-height:44px;padding:7px 10px}
}

/* LAB navy brand, leaving the teaching scene and Scratch colours intact. */
:root{--ink:#18243b;--muted:#465671;--paper:#f7f9fd;--line:#cbd5e3;--green:#284d82;--lime:#b8d4ff}
.home-panel{background:#14213bf5;color:#f3f6fc;border-color:#425674}.home-panel h1,.home-panel h1 span{color:#f3f6fc}.home-panel .lead,.home-panel .home-description,.home-panel .tiny,.home-panel .home-foot{color:#b8c6df}.home-panel .lesson-info{background:#1c2d4a;color:#f3f6fc}.home-panel .primary{background:#8dbbff;color:#0b1224}.home-panel a,.home-panel button:not(.primary){color:#b8d4ff}#loading{background:#0b1224;color:#f3f6fc}

.lab-classroom-back{display:inline-flex;align-items:center;min-height:44px;font-size:14px;color:#b8d4ff;text-decoration:underline;margin-bottom:8px}
.home-panel .home-time,.home-panel .lesson-info small,.home-panel .home-foot span{color:#b8c6df}.home-panel .lesson-info>span,.home-panel .eyebrow{color:#8dbbff}.toolbar .brand span{color:#284d82}

/* Keep the exit outside the scrolling story, including on short mobile screens. */
.dialog-header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px;border-bottom:1px solid var(--line);background:#f8f7ef}
.dialog-header>span{font-size:12px;color:var(--muted)}
#close-dialog{position:static;flex-shrink:0;width:auto;height:auto;min-height:44px;padding:10px 14px;font-size:14px;line-height:1.4;color:var(--ink)}
#dialog-body{max-height:calc(100dvh - 164px)}
@media(max-width:900px){#dialog-body{max-height:calc(100dvh - 116px)}}
@media(max-width:600px),(max-height:660px){#dialog-body{max-height:calc(100dvh - 92px)}}
@media(max-width:760px){.home-panel{max-height:calc(100dvh - 112px)}.home-panel .home-time{margin-top:8px}.home-panel .lead{font-size:15px;line-height:1.6}.home-panel h1{font-size:30px}.home-panel .tiny{font-size:11px;line-height:1.6;margin:10px 0 15px}.home-panel #start{min-height:52px}.dialog-header{padding:8px 12px}}
@media print{.dialog-header{display:none}}
@media(max-height:500px){.home-panel{top:auto;bottom:16px;left:16px;right:16px;transform:none;width:min(420px,calc(100% - 32px));max-height:calc(100dvh - 100px);padding:12px 18px}.home-panel .home-time,.home-panel .eyebrow,.home-panel .home-foot,.home-panel .tiny{display:none}.home-panel .lab-classroom-back{min-height:28px;margin-bottom:2px;font-size:12px}.home-panel h1{font-size:24px;line-height:1.3;margin:6px 0}.home-panel h1 br,.home-panel .lead br{display:none}.home-panel .lead{font-size:13px;line-height:1.5;margin:8px 0 12px}.home-panel #start{min-height:48px}}