*{box-sizing:border-box}body{margin:0;overflow:hidden;background:#000;font-family:system-ui,Segoe UI,sans-serif;color:#e8f1f2}
canvas{display:block}.overlay{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(5,12,18,.78);backdrop-filter:blur(4px);z-index:10}
.hidden{display:none!important}.card{background:linear-gradient(160deg,#13242e,#0b161d);border:1px solid #2f6f7a;border-radius:14px;padding:28px 34px;max-width:620px;box-shadow:0 0 40px #0ff3;max-height:90vh;overflow:auto}
h1{margin:0 0 4px;letter-spacing:4px;color:#6ff0d8;text-shadow:0 0 12px #6ff0d888}.sub{color:#8ab;margin-top:0}.keys{color:#9cc;font-size:14px}
button{background:#1d8f7e;color:#fff;border:0;padding:10px 22px;border-radius:8px;font-size:16px;cursor:pointer;margin:4px}button:hover{background:#25b39e}button.alt{background:#34505a}
#crosshair{position:fixed;left:50%;top:50%;width:6px;height:6px;margin:-3px;border-radius:50%;background:#fff;opacity:.8;z-index:5}
#tip{position:fixed;left:50%;top:calc(50% + 24px);transform:translateX(-50%);background:#000a;padding:6px 12px;border-radius:6px;font-size:15px;display:none;z-index:5;border:1px solid #6ff0d866}
#hud{position:fixed;left:16px;bottom:16px;z-index:5}#obj{background:#000a;padding:8px 12px;border-radius:8px;margin-bottom:8px;font-size:14px;max-width:340px;border-left:3px solid #6ff0d8}
#inv{display:flex;gap:6px}.slot{width:64px;height:64px;background:#0009;border:1px solid #2f6f7a;border-radius:8px;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:11px;text-align:center}.slot span{font-size:26px}
#toast{position:fixed;top:24px;left:50%;transform:translateX(-50%);background:#0b1d24ee;border:1px solid #6ff0d8;padding:10px 18px;border-radius:8px;opacity:0;transition:opacity .3s;z-index:6;max-width:560px;text-align:center}
.note{background:#f3ecd2;color:#2b2416;font-family:Georgia,serif;padding:18px;border-radius:4px;line-height:1.5}
.keypad{display:grid;grid-template-columns:repeat(3,60px);gap:6px;justify-content:center;margin:10px 0}.keypad button{margin:0;padding:12px}
#code{font:28px monospace;text-align:center;letter-spacing:8px;background:#000;padding:8px;border-radius:6px;color:#6f6}
.row{display:flex;align-items:center;gap:8px;margin:6px 0}.row label{flex:1}.beaker{height:120px;width:90px;margin:8px auto;border:3px solid #9cd;border-top:none;border-radius:0 0 14px 14px;position:relative;overflow:hidden}
.liq{position:absolute;bottom:0;left:0;right:0;transition:all .5s}table.pt td{width:38px;height:38px;border:1px solid #577;text-align:center;font-size:11px}
.card.wide{max-width:780px}.small{font-size:13px;color:#9bb}button:disabled{opacity:.45;cursor:default}
#rooms{display:grid;grid-template-columns:1fr 1fr;gap:6px}.roomb{text-align:left;display:flex;flex-direction:column;background:#17313b;margin:0}.roomb small{color:#9cc;font-size:12px}.roomb.cur{outline:2px solid #6ff0d8}
#obj .cnt{color:#6ff0d8;margin-left:6px}
.prow{text-align:right;margin-top:12px}.tag{font-size:12px;color:#6ff0d8;text-transform:uppercase;letter-spacing:1px}.prompt{line-height:1.5}
#ans{flex:1;font-size:18px;padding:8px;border-radius:6px;border:1px solid #2f6f7a;background:#061015;color:#fff}.unit{color:#9cc}
.choices{display:flex;flex-direction:column;gap:4px}.ch{text-align:left;background:#21434d}
#fb{margin:8px 0;min-height:24px;line-height:1.45}#fb.ok{color:#9f9}#fb.bad{color:#ffb4a0}.why{color:#dff;background:#0c2a30;padding:8px;border-radius:6px;margin-top:6px}
.hint{background:#2a2a10;border-left:3px solid #e6c84a;padding:6px 10px;margin:4px 0;border-radius:4px;font-size:14px}button.small{font-size:14px;padding:6px 14px}
#nbBtn{position:fixed;right:16px;bottom:16px;z-index:7;font-size:26px;padding:8px 14px}#nbBtn.pulse{animation:pl 1.5s}@keyframes pl{50%{background:#e6c84a;transform:scale(1.15)}}
#notebook{position:fixed;right:0;top:0;bottom:0;width:min(560px,100vw);z-index:20;background:#0d1b20f2;border-left:2px solid #6ff0d8;overflow:auto}
.nbcard{padding:16px}.nbh{display:flex;justify-content:space-between;align-items:center}.nbh h2{margin:0;color:#f3e3a0}
.nbtabs{display:flex;gap:4px;margin:10px 0;flex-wrap:wrap}.nbtabs button{margin:0;padding:6px 10px;font-size:14px;background:#24434c}.nbtabs button.on{background:#1d8f7e}
.nbe{background:#f3ecd2;color:#2b2416;border-radius:4px;padding:8px 10px;margin:6px 0;font-family:Georgia,serif;font-size:14px;line-height:1.45}.nbe.formula{border-left:5px solid #1d8f7e}.nbe.why{border-left:5px solid #e6c84a}.nbe.example{border-left:5px solid #c96}.nbk{font:11px system-ui;color:#776}
.gl{padding:5px 0;border-bottom:1px solid #234;font-size:14px}
.calc input{width:100%;font:18px monospace;padding:8px;background:#000;color:#6f6;border:1px solid #2f6f7a;border-radius:6px}#cres{font:20px monospace;color:#6ff0d8;text-align:right;margin:4px 0}
.cgrid{display:grid;grid-template-columns:repeat(5,1fr);gap:4px}.cgrid button,.cconst button{margin:0;padding:8px 0;font-size:15px}.cconst{display:grid;grid-template-columns:repeat(6,1fr);gap:4px;margin:6px 0}.cconst button{background:#5a4a1d}
.chist{font:13px monospace;color:#9cc;margin-top:6px}.scr textarea{width:100%;height:180px;background:#f3ecd2;color:#2b2416;font:15px Georgia;border-radius:4px;padding:8px}

#hotbar{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);display:flex;gap:6px;z-index:5}
#hotbar .hs{width:48px;height:48px;border:1px solid #6ff0d855;background:#0009;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:24px;position:relative}
#hotbar .hs small{position:absolute;top:2px;left:5px;font-size:10px;opacity:.7}
#hotbar .hs.eq{border-color:#c79bff;box-shadow:0 0 12px #9b6bff}
#inspect{position:fixed;left:50%;bottom:80px;transform:translateX(-50%);z-index:7;max-width:620px;text-align:center}
#inspect.hidden{display:none}
#insFb{background:#000b;border-radius:8px;padding:0 12px;font-size:15px}
#insFb.ok{color:#7dffa0;padding:8px 12px}#insFb.bad{color:#ffb0a0;padding:8px 12px}
#insHints .hint{background:#0b1d24ee;border:1px solid #6ff0d866;border-radius:6px;padding:6px 10px;margin:4px 0;font-size:14px;text-align:left}
.insrow{display:flex;gap:8px;justify-content:center;margin-top:6px}
.stars{font-size:34px;color:#ffd34d;letter-spacing:4px}
.rcard{background:#fff8e1;color:#2b2416;border-left:5px solid #b8860b;padding:6px 10px;margin:6px 0;border-radius:6px;text-align:left;font-size:14px}

#loadwrap{margin:10px auto 14px;max-width:420px}#loadbar{height:10px;background:#ffffff22;border-radius:6px;overflow:hidden}#loadfill{display:block;height:100%;width:0;background:#12d1b5;transition:width .2s}#loadtxt{font-size:13px;opacity:.8;margin-top:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#play.busy{opacity:.7;transform:scale(.97)}.restartrow{margin-top:22px}button.link{background:none;border:none;color:#9fb;text-decoration:underline;cursor:pointer;font-size:13px;padding:0;box-shadow:none}
.ctl{display:grid;grid-template-columns:1fr 1fr;gap:10px 22px;text-align:left;margin:12px 0}kbd{background:#223;border:1px solid #556;border-radius:5px;padding:2px 7px;font-family:monospace}
.note{font-size:20px;line-height:1.5}.note h3{font-size:24px}