@font-face{font-family:Cairo;src:url('./assets/cairo-400.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:Cairo;src:url('./assets/cairo-700.woff2') format('woff2');font-weight:600 900;font-display:swap}
:root{--ink:#123732;--muted:#687b74;--accent:#c4ed72;--teal:#075b4d;--line:#dae3dc;--paper:#fafcf8;--dark:#082c29;--gold:#d6ad68;font-family:Cairo,Arial,sans-serif;color:var(--ink);font-synthesis:none}
*{box-sizing:border-box}html,body{margin:0;width:100%;height:100%;overflow:hidden}body{background:#bdd2ca}button,input,select{font:inherit}button{cursor:pointer}button:disabled{cursor:default;opacity:.42}button,a,select,input{touch-action:manipulation}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid #a0d84c;outline-offset:4px}button{border:0}button svg{flex-shrink:0}svg.icon{width:21px;height:21px;stroke:currentColor;stroke-width:1.7;fill:none;stroke-linecap:round;stroke-linejoin:round;vertical-align:middle}h1,h2,h3,p{margin:0}button{color:inherit}a{color:var(--teal)}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
#world{position:absolute;inset:0;width:100%;height:100%;display:block;outline:none;touch-action:none}#veil{position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,transparent 40%,#082c2955),linear-gradient(0deg,#071b2545,transparent 30%)}.topbar{position:absolute;z-index:12;top:0;left:0;right:0;height:92px;padding:22px 32px;display:flex;align-items:center;justify-content:space-between;gap:16px;pointer-events:none}.topbar>*{pointer-events:auto}.brand{display:flex;align-items:center;gap:12px;color:#123c34;text-shadow:0 1px 14px #ffffffe0}.brand-mark{height:45px;width:45px;border-radius:14px;background:var(--dark);color:var(--accent);display:grid;place-items:center;box-shadow:0 5px 15px #102b2920}.brand-mark .icon{height:28px;width:28px}.brand-name{font-size:18px;font-weight:700;line-height:1.4}.brand-sub{display:block;font-size:12px;letter-spacing:.02em;font-weight:400;margin-top:3px}.top-actions{display:flex;gap:8px;align-items:center}.icon-button{display:grid;place-items:center;width:42px;height:42px;border:1px solid #ffffff77;border-radius:50%;background:#f7fbf6de;backdrop-filter:blur(15px);transition:background .2s,transform .2s}.icon-button:hover{background:white;transform:translateY(-2px)}.icon-button.on{background:var(--dark);color:var(--accent)}.text-button{display:flex;gap:8px;align-items:center;background:#f7fbf6de;border-radius:24px;padding:8px 17px;border:1px solid #fff7;font-size:14px;font-weight:700;min-height:42px}.badge{display:inline-flex;align-items:center;gap:7px;padding:5px 12px;border:1px solid #bedbbd;border-radius:30px;background:#eef6e6;color:var(--teal);font-size:12px;font-weight:700}.badge.dark{background:#ffffff0b;border-color:#ffffff25;color:var(--accent)}.primary{border-radius:13px;min-height:52px;padding:12px 22px;background:var(--teal);color:white;font-weight:700;font-size:16px;display:flex;align-items:center;justify-content:center;gap:12px;transition:background .2s,transform .2s;box-shadow:0 6px 16px #053f4320}.primary:hover:enabled{background:#07493e;transform:translateY(-1px)}.primary.lime{background:var(--accent);color:#133c2a;box-shadow:0 4px 24px #9dbb3a20}.primary.lime:hover:enabled{background:#d3f29a}.secondary{border:1px solid #cddbd2;background:#f8fbf6;border-radius:11px;min-height:44px;padding:9px 14px;font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center;gap:8px}.secondary:hover{background:#eaf3e5}.full{width:100%}.small-label{font-size:12px;color:var(--muted)}
.start-screen{position:absolute;inset:100px 5vw 36px;z-index:5;display:grid;grid-template-columns:minmax(290px,390px) minmax(360px,540px);justify-content:space-between;align-items:center;gap:5vw;pointer-events:none}.start-screen>*{pointer-events:auto}.intro{padding:38px 32px 32px;color:#f6faef;background:linear-gradient(145deg,#0e3732ef,#072923ed);border:1px solid #c5e2c12b;border-radius:25px;box-shadow:0 30px 100px #102d2945;backdrop-filter:blur(20px)}.intro h1{font-size:clamp(34px,3.1vw,50px);font-weight:700;line-height:1.55;margin:18px 0 14px;letter-spacing:-1px}.intro h1 span{color:var(--accent)}.intro>p{font-size:15px;line-height:1.95;color:#c0d4c9}.mission-preview{border-top:1px solid #ffffff23;margin-top:28px;padding-top:22px;display:flex;gap:16px;align-items:center}.mission-number{color:var(--accent);font:400 44px Georgia,serif;line-height:1}.mission-name{font-size:18px;font-weight:700}.mission-meta{font-size:12px;color:#b1c8ba;margin-top:6px}.intro .mini-note{font-size:12px;color:#a3bcae;margin-top:20px;line-height:1.8}.character-select{align-self:center;background:#f5faf2e8;border:1px solid #fff9;border-radius:25px;padding:27px;box-shadow:0 22px 90px #0a2b2927;backdrop-filter:blur(18px)}.character-select h2{font-size:23px}.character-select>p{font-size:14px;color:var(--muted);margin:4px 0 19px}.characters{display:grid;grid-template-columns:1fr 1fr;gap:13px;margin-bottom:22px}.character{position:relative;overflow:hidden;border:2px solid transparent;border-radius:16px;background:#d7e4da;padding:0;text-align:right;transition:transform .25s,border-color .2s}.character img{width:100%;aspect-ratio:.79;object-fit:cover;object-position:center 30%;display:block;transition:transform .4s}.character:hover{transform:translateY(-4px)}.character:hover img{transform:scale(1.025)}.character.selected{border-color:#417c33;box-shadow:0 0 0 3px #a6cd703b}.character-bottom{position:absolute;bottom:0;right:0;left:0;background:linear-gradient(0deg,#082d2bf5,#082d2900);padding:40px 16px 16px;color:#fff;display:flex;align-items:center;justify-content:space-between;font-size:17px;font-weight:700}.selection-ring{width:22px;height:22px;border:1px solid #fff9;border-radius:50%;display:grid;place-items:center}.selected .selection-ring{background:var(--accent);color:var(--dark);border-color:var(--accent)}.selection-ring .icon{width:15px;height:15px}.select-note{text-align:center;font-size:12px;color:var(--muted);margin-top:12px}.start-footer{position:absolute;bottom:18px;left:34px;color:#3b6054;font-size:12px;z-index:4}
#game-ui{position:absolute;inset:0;z-index:4;pointer-events:none}#game-ui button,#game-ui select,#game-ui input,#game-ui aside{pointer-events:auto}.chapter-chip{position:absolute;top:104px;right:32px;display:flex;align-items:center;gap:10px;color:var(--ink);background:#f8fbf2eb;border:1px solid #fff9;backdrop-filter:blur(15px);padding:9px 14px;border-radius:12px;font-size:14px}.chapter-chip b{font:400 22px Georgia,serif;color:var(--teal);border-left:1px solid #ccd9ca;padding-left:12px}.task-panel{position:absolute;right:32px;top:164px;width:318px;max-height:calc(100dvh - 290px);display:flex;flex-direction:column;background:#fbfdf9f2;border:1px solid #ffffffb0;border-radius:19px;box-shadow:0 16px 60px #133c2922;backdrop-filter:blur(18px);overflow:hidden}.stage-progress{display:flex;gap:5px;padding:20px 22px 0}.stage-progress span{height:3px;flex:1;background:#dfe7db;border-radius:3px}.stage-progress span.complete{background:#246652}.stage-progress span.current{background:#98bf48}.task-body{padding:18px 22px 22px;overflow-y:auto;scrollbar-width:thin;scrollbar-color:#c0d1bd transparent}.task-kicker{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted);margin-bottom:9px}.task-body h2{font-size:23px;line-height:1.5;margin-bottom:9px}.task-body>p{font-size:14px;line-height:1.95;color:#63796e;margin-bottom:17px}.guide-note{font-size:13px;line-height:1.8;background:#f0f5eb;border-right:3px solid #a0c56d;padding:10px 12px;border-radius:8px;margin:12px 0;color:#4c695a}.task-list{display:grid;gap:9px;margin:16px 0}.task-check{display:flex;align-items:center;gap:11px;border:1px solid #dce5d7;background:#fff;border-radius:11px;padding:12px;text-align:right;min-height:50px;font-size:14px}.task-check .check-circle{width:23px;height:23px;border:1px solid #bdcdb7;border-radius:50%;display:grid;place-items:center;flex-shrink:0;color:#648057}.task-check.done{background:#edf5e6;border-color:#c9deb9}.task-check.done .check-circle{background:#4e7b3d;color:#fff;border-color:transparent}.task-check .icon{width:17px;height:17px}.choices{display:grid;gap:9px;margin:15px 0}.choice{background:white;border:1px solid #d5e1d1;border-radius:11px;padding:12px 14px;text-align:right;line-height:1.8;display:flex;align-items:center;gap:12px;font-size:14px}.choice::before{content:'';width:17px;height:17px;border:1px solid #adbfac;border-radius:50%;flex-shrink:0}.choice.selected{border-color:#62964b;background:#f0f7e8}.choice.selected::before{border:5px solid #477c40;background:#d4edac}.choice.correct{background:#e6f3dc;border-color:#8eb572}.choice.wrong{background:#fff4e5;border-color:#ddbf83}.feedback{padding:11px 13px;border-radius:10px;font-size:13px;line-height:1.9;margin:11px 0;background:#e9f2e4;color:#315a36}.feedback.retry{background:#fff4e1;color:#796127}.step-action{margin-top:16px}.tools{position:absolute;bottom:25px;left:50%;transform:translateX(-50%);padding:8px;display:flex;gap:6px;background:#0c302dec;backdrop-filter:blur(20px);border:1px solid #a7c7ad35;border-radius:19px;box-shadow:0 13px 45px #0b2d2945;pointer-events:auto}.tool{min-width:90px;height:74px;border-radius:12px;background:transparent;color:#d4e5d6;display:flex;flex-direction:column;gap:7px;align-items:center;justify-content:center;border:1px solid transparent;font-size:12px}.tool .icon{width:27px;height:27px;stroke-width:1.4}.tool:hover{background:#ffffff10}.tool.active{background:#c4ed72;color:#123c2a}.tool.done{color:#bdd791;border-color:#d0ec9522}.tool-separator{align-self:center;width:1px;height:40px;background:#c4e0c62b;margin:0 4px}.tool.locked{opacity:.35}.metrics{position:absolute;left:30px;top:104px;width:192px;display:grid;gap:8px;pointer-events:none}.metric{border:1px solid #fff9;border-radius:13px;padding:13px 17px;background:#fbfdf5eb;backdrop-filter:blur(15px)}.metric-title{font-size:12px;color:#668074;display:flex;align-items:center;gap:7px}.metric-title .icon{width:17px;height:17px}.metric-value{font:400 30px Georgia,serif;direction:ltr;text-align:right;margin-top:5px;color:#153b2d}.metric-value span{font:12px Cairo,Arial,sans-serif;margin-right:5px;color:#688070}.metric small{display:block;font-size:11px;margin-top:5px;color:#748679}.meter-track{height:3px;background:#d9e4d2;border-radius:5px;margin-top:10px;overflow:hidden}.meter-track i{display:block;height:100%;background:#7faa48;width:0;transition:width .2s}.view-controls{position:absolute;left:30px;bottom:132px;display:flex;flex-direction:column;gap:8px}.view-controls .text-button{background:#f7faf1ef;color:#244a38}.view-controls .active{background:#163f34;color:#d4edae}.camera-hint{position:absolute;bottom:29px;left:30px;color:#e6f0e0;font-size:12px;text-shadow:0 1px 8px #143a2d;max-width:190px;line-height:1.9}.player-badge{position:absolute;right:32px;bottom:27px;display:flex;gap:10px;align-items:center;background:#f7fbf0ea;padding:6px 7px 6px 16px;border-radius:34px;max-width:200px}.player-badge img{width:43px;height:43px;object-fit:cover;object-position:center 25%;border-radius:50%;border:2px solid white}.player-badge b{font-size:13px}.player-badge small{font-size:11px;color:var(--muted);display:block}.hotspots{position:absolute;inset:0;pointer-events:none}.hotspot{position:absolute;transform:translate(-50%,-50%);border:1px solid #ffffffcf;background:#fafff1ed;color:#164733;box-shadow:0 3px 20px #102a2228;border-radius:30px;padding:7px 13px;font-size:13px;white-space:nowrap;display:flex;gap:7px;align-items:center;pointer-events:auto;transition:background .2s}.hotspot:hover{background:var(--accent)}.hotspot::before{content:'';height:7px;width:7px;background:#75a042;border-radius:50%;box-shadow:0 0 0 4px #a5c58424}.hotspot.target{background:#c7ee7b;box-shadow:0 0 0 5px #d4eeac44,0 4px 24px #1b35142a}.toast{position:absolute;left:50%;top:100px;transform:translateX(-50%);max-width:460px;z-index:30;background:#113a31f0;color:#fff;padding:13px 22px;border-radius:13px;box-shadow:0 8px 30px #0d241f2b;font-size:14px;text-align:center;line-height:1.8;pointer-events:none}.reaction-controls{display:flex;gap:7px;align-items:center;margin:12px 0}.reaction-controls button{min-height:40px;border:1px solid #cddbc5;border-radius:9px;background:#fff;padding:7px 12px;font-size:13px}.reaction-controls button.active{background:#153f32;color:#def4bd}.equation{font-family:Arial,sans-serif;direction:ltr;text-align:center;background:#eef5e8;padding:14px 9px;font-size:17px;line-height:1.8;border:1px solid #dbe6cf;border-radius:10px;margin:14px 0}.reaction-state{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted);margin:10px 0}.reaction-state b{color:var(--teal)}
dialog{border:1px solid #fff8;border-radius:22px;background:var(--paper);color:var(--ink);padding:0;width:min(590px,92vw);max-height:86dvh;box-shadow:0 28px 130px #001f2370}dialog::backdrop{background:#052a2b83;backdrop-filter:blur(8px)}.dialog-header{padding:23px 27px 18px;display:flex;align-items:center;justify-content:space-between;gap:15px;border-bottom:1px solid var(--line)}.dialog-header h2{font-size:23px}.dialog-header .icon-button{border:1px solid var(--line)}.dialog-body{padding:25px 27px;overflow:auto;max-height:calc(86dvh - 88px);font-size:15px;line-height:1.9}.dialog-body p+p{margin-top:13px}.dialog-body h3{font-size:17px;margin:20px 0 10px}.setting{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:17px 0;border-bottom:1px solid var(--line)}.setting select{padding:9px 13px;max-width:165px;background:white;border:1px solid #cbd9c5;border-radius:9px;color:var(--ink);font-size:14px}.setting input[type=checkbox]{width:23px;height:23px;accent-color:var(--teal)}.setting small{font-size:12px;color:var(--muted);display:block}.dialog-actions{display:flex;gap:10px;margin-top:23px}.notebook-entry{background:white;border:1px solid #dce5d8;border-radius:12px;padding:16px;margin-bottom:12px}.notebook-entry small{color:var(--muted);font-size:12px}.notebook-entry p{font-size:14px;margin-top:5px}.notebook-entry .tag{display:inline-block;color:#53733e;background:#eff5e8;padding:2px 9px;border-radius:6px;font-size:12px;margin-top:9px}.source-list{padding-right:20px}.source-list li{margin:9px 0}.compare-cards{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin:14px 0}.compare-card{border:1px solid #dae4d3;background:#fff;padding:11px;border-radius:11px;font-size:12px}.compare-card b{display:block;font-size:14px;margin-bottom:6px}.compare-card dl{margin:0}.compare-card dt{color:var(--muted);font-size:11px;margin-top:7px}.compare-card dd{direction:ltr;font-family:Arial,sans-serif;font-size:16px;margin:2px 0}.compare-card.new{background:#f0f6e9;border-color:#b8cda5}.molecule-labels{position:absolute;top:114px;left:50%;transform:translateX(-50%);text-align:center;color:#f4ffeb;width:45%;pointer-events:none}.molecule-labels h3{font-size:25px}.molecule-labels p{font-size:13px;color:#b1cab8;margin-top:5px}.molecule-legend{position:absolute;bottom:144px;left:50%;transform:translateX(-50%);display:flex;gap:20px;align-items:center;justify-content:center;background:#0c302de3;border:1px solid #ffffff25;border-radius:14px;color:#d8e4d1;padding:14px 23px;direction:ltr;white-space:nowrap;font:16px Arial,sans-serif}.molecule-legend span{display:flex;align-items:center;gap:7px}.atom-dot{width:12px;height:12px;border-radius:50%;background:#c2a9ee;display:inline-block}.atom-dot.o{background:#e47465}.atom-dot.h{background:#fff}.result-screen{position:absolute;inset:100px 20px 25px;z-index:15;display:grid;place-items:center;overflow-y:auto}.result-card{width:min(690px,100%);background:#fafcf7f5;border:1px solid white;border-radius:26px;padding:36px;text-align:center;box-shadow:0 30px 90px #14362f55;backdrop-filter:blur(20px)}.result-seal{width:72px;height:72px;border-radius:50%;background:#e7f3d6;color:#5a7b31;display:grid;place-items:center;margin:0 auto 16px;border:1px solid #cce2b4}.result-seal .icon{width:39px;height:39px}.result-card h2{font-size:31px;margin:10px 0}.result-card>p{color:#667d6d;font-size:15px;line-height:1.9}.achievement-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:25px 0}.achievement{background:#f0f5e9;border:1px solid #dae5cd;border-radius:13px;padding:15px 8px;font-size:13px}.achievement .icon{display:block;margin:0 auto 8px;color:#638946;width:25px;height:25px}.result-card .dialog-actions{justify-content:center;flex-wrap:wrap}.result-card .equation{font-size:22px}.result-note{font-size:12px!important;margin-top:18px}.loading{position:absolute;inset:0;z-index:50;display:grid;place-items:center;background:#0b302c;color:#ecf6df;text-align:center;transition:opacity .5s}.loading-inner{width:300px}.loading .brand-mark{margin:0 auto 25px;background:#20483b;width:65px;height:65px}.loading h2{font-size:25px}.loading p{font-size:14px;color:#b4cbb8;margin-top:12px}.loader-line{height:3px;width:180px;background:#365648;margin:24px auto;border-radius:4px;overflow:hidden}.loader-line i{display:block;height:100%;width:45%;background:#c4ed72;animation:loading 1.8s ease-in-out infinite}.fatal{position:absolute;inset:0;z-index:60;display:grid;place-items:center;background:#092d29;padding:25px}.fatal article{max-width:510px;background:#f4f8ed;padding:34px;border-radius:22px;text-align:center;line-height:2}.fatal h2{font-size:25px;margin:15px 0}.fatal button{margin-top:25px}.large-text{font-size:120%}.large-text .task-body p,.large-text .choice,.large-text .task-check{font-size:17px}.large-text .task-panel{width:355px}.classroom .task-panel{width:390px}.classroom .task-body p,.classroom .choice{font-size:18px}.classroom .task-body h2{font-size:29px}.classroom .metric-title{font-size:15px}.classroom .task-check{font-size:17px}.classroom .topbar{height:98px}.reduced-motion *{animation:none!important;transition:none!important}
@keyframes loading{0%{transform:translateX(250%)}100%{transform:translateX(-300%)}}
@media(min-width:1600px){.task-panel{width:355px;top:180px}.task-body{padding:22px 26px}.task-body>p,.choice{font-size:16px}.metrics{width:210px}.start-screen{inset:120px 8vw 55px;grid-template-columns:430px 580px}.character-select{padding:32px}.intro{padding:44px 38px}}
@media(max-width:1050px){.topbar{padding:18px 22px;height:80px}.brand-sub{display:none}.start-screen{inset:92px 4vw 30px;gap:24px;grid-template-columns:minmax(260px,340px) minmax(300px,420px)}.intro{padding:27px 25px}.intro h1{font-size:34px}.character-select{padding:22px}.character-select h2{font-size:21px}.task-panel{right:20px;width:282px;top:143px;max-height:calc(100dvh - 255px)}.task-body{padding:14px 17px 18px}.task-body h2{font-size:21px}.task-body>p{font-size:13px}.chapter-chip{top:89px;right:20px}.metrics{left:20px;top:89px;width:150px}.metric{padding:10px 13px}.metric-value{font-size:25px}.view-controls{left:20px;bottom:129px}.tool{min-width:70px;height:64px;font-size:11px}.tools{bottom:21px;gap:2px;padding:6px}.player-badge{right:20px;bottom:23px}.player-badge b{font-size:12px}.player-badge img{height:35px;width:35px}.camera-hint{display:none}.molecule-labels{width:38%;left:45%}.molecule-labels h3{font-size:21px}.molecule-legend{left:45%;gap:11px;font-size:14px}.classroom .task-panel{width:330px}}
@media(max-width:760px){.topbar{padding:13px 15px;height:72px}.brand-name{font-size:15px}.brand-mark{width:37px;height:37px;border-radius:11px}.brand{gap:8px}.brand-mark .icon{width:23px;height:23px}.top-actions{gap:6px}.top-actions .icon-button{width:35px;height:35px}.top-actions .icon{width:18px;height:18px}.top-actions .text-button{min-height:35px;padding:5px 10px;font-size:12px}.text-button .hide-mobile{display:none}.start-screen{inset:77px 18px 32px;display:flex;flex-direction:column;gap:15px;justify-content:center;overflow-y:auto;pointer-events:auto;padding:5px 0}.intro{width:100%;padding:19px 23px;border-radius:18px}.intro h1{font-size:29px;line-height:1.4;margin:9px 0}.intro h1 br{display:none}.intro>p{font-size:13px;line-height:1.8}.intro .badge{font-size:11px;padding:2px 9px}.mission-preview{margin-top:14px;padding-top:12px;gap:12px}.mission-number{font-size:30px}.mission-name{font-size:15px}.mission-meta{margin-top:2px;font-size:11px}.intro .mini-note{display:none}.character-select{width:100%;padding:17px;border-radius:18px}.character-select h2{font-size:18px}.character-select>p{font-size:12px;margin:1px 0 10px}.characters{gap:11px;margin-bottom:12px}.character img{aspect-ratio:1.3;object-position:center 24%}.character-bottom{padding:25px 11px 9px;font-size:14px}.selection-ring{height:19px;width:19px}.character-select .primary{min-height:46px;font-size:14px;padding:10px 15px}.select-note{font-size:11px;margin-top:6px}.start-footer{bottom:9px;left:18px;font-size:10px}.chapter-chip{top:76px;right:15px;padding:5px 10px;font-size:12px;border-radius:9px}.chapter-chip b{font-size:19px}.task-panel,.large-text .task-panel,.classroom .task-panel{right:12px;left:12px;top:auto;bottom:92px;width:auto;max-height:31dvh;border-radius:16px}.stage-progress{padding:12px 16px 0}.task-body{padding:10px 16px 15px}.task-kicker{font-size:11px;margin-bottom:3px}.task-body h2{font-size:19px;margin-bottom:4px}.task-body>p{font-size:13px;margin-bottom:9px}.task-body .primary{min-height:43px;font-size:14px;padding:9px 13px}.task-body .task-list{margin:9px 0;gap:6px}.task-check{min-height:42px;padding:8px 11px;font-size:13px}.task-body .choices{gap:6px;margin:8px 0}.choice{padding:8px 11px;min-height:43px;font-size:13px;line-height:1.6}.guide-note{font-size:12px;margin:8px 0;padding:8px 10px}.step-action{margin-top:10px}.metrics{top:121px;left:12px;width:109px;gap:5px}.metric{padding:8px 10px;border-radius:10px}.metric-title{font-size:10px;gap:4px}.metric-title .icon{height:13px;width:13px}.metric-value{font-size:22px;margin-top:3px}.metric-value span{font-size:10px}.metric small{font-size:9px}.meter-track{margin-top:5px;height:2px}.tools{bottom:13px;left:12px;right:12px;transform:none;justify-content:space-around;border-radius:15px;padding:5px;gap:1px}.tool{min-width:0;width:20%;height:62px;gap:5px;font-size:10px;border-radius:10px}.tool .icon{width:24px;height:24px}.tool-separator{margin:0;height:30px}.player-badge{display:none}.view-controls{left:12px;bottom:calc(31dvh + 105px);gap:5px;flex-direction:row}.view-controls .text-button{padding:7px 10px;min-height:33px;font-size:11px;gap:5px}.view-controls .icon{width:16px;height:16px}.hotspot{padding:5px 10px;font-size:11px;gap:5px}.toast{top:80px;max-width:90%;width:max-content;padding:10px 16px;font-size:12px;z-index:35}.reaction-controls{margin:8px 0}.molecule-labels{top:119px;left:60%;width:68%}.molecule-labels h3{font-size:18px}.molecule-labels p{font-size:11px}.molecule-legend{bottom:calc(31dvh + 150px);left:55%;font-size:12px;padding:9px 12px;gap:9px}.atom-dot{width:9px;height:9px}.result-screen{inset:79px 13px 14px}.result-card{padding:25px 20px;border-radius:20px}.result-card h2{font-size:25px}.result-card>p{font-size:13px}.achievement-grid{gap:6px;margin:18px 0}.achievement{font-size:11px;padding:12px 5px}.result-card .equation{font-size:18px}.dialog-header{padding:17px 20px}.dialog-header h2{font-size:20px}.dialog-body{padding:19px 20px}.dialog-actions{flex-wrap:wrap}.dialog-actions button{flex:1;font-size:14px}.compare-cards{margin:9px 0}.compare-card dl{display:flex;flex-wrap:wrap;column-gap:8px;align-items:center}.compare-card dd{font-size:13px}.compare-card dt{font-size:10px}.classroom .task-body>p,.classroom .choice{font-size:16px}}
@media(max-height:640px) and (min-width:761px){.topbar{height:65px;padding-top:10px;padding-bottom:10px}.start-screen{inset:72px 5vw 20px;gap:30px;grid-template-columns:320px 370px}.intro{padding:23px}.intro h1{font-size:30px;line-height:1.4}.intro>p{font-size:13px}.intro .mini-note{display:none}.mission-preview{margin-top:18px;padding-top:15px}.character-select{padding:17px}.character img{aspect-ratio:1.1}.characters{margin-bottom:12px}.character-select h2{font-size:19px}.character-select>p{margin-bottom:10px}.primary{min-height:44px;font-size:14px}.task-panel{top:123px;max-height:calc(100dvh - 215px)}.chapter-chip,.metrics{top:73px}.metric{padding:9px 12px}.tool{height:56px}.tools{bottom:15px}.tool .icon{width:23px;height:23px}.view-controls{bottom:100px}.player-badge{bottom:18px}.task-body h2{font-size:19px}.task-body>p{font-size:12px}.task-kicker{margin-bottom:3px}.stage-progress{padding-top:14px}.molecule-legend{bottom:105px}.molecule-labels{top:80px}}
/* Experiment settings remain inside the scrollable task panel. */
.experiment-controls{display:grid;gap:10px;margin:12px 0;padding:14px;border:1px solid #719d91;border-radius:12px;background:#e4eee7;color:#183e36}.experiment-controls label{display:flex;align-items:center;justify-content:space-between;gap:8px;font-weight:700;font-size:13px}.experiment-controls select{font:inherit;max-width:145px;background:#fff;color:#153d35;border:1px solid #79988e;border-radius:7px;padding:6px}.experiment-controls small{font-size:11px;line-height:1.8}.experiment-controls input{accent-color:#245e4e}
.description-mode{background:radial-gradient(ellipse at 30% 30%,#28495e,#101e2b)}.description-mode .brand{color:#edf5fa;text-shadow:none}.description-panel{position:absolute;left:22%;right:30%;top:27%;padding:28px;border-radius:18px;background:#f2f6f8;color:#163a45;border:1px solid #6c95a9;line-height:2}.description-panel h2{font-size:25px;margin:12px 0}.description-panel p{font-size:18px}.description-mode #hotspots,.description-mode #camera-button,.description-mode #molecule-labels,.description-mode #molecule-legend{display:none!important}.fatal .secondary{margin-top:12px}@media(max-width:700px){.description-panel{left:135px;right:12px;top:135px;max-height:calc(48dvh - 120px);overflow:auto;padding:14px}.description-panel h2{font-size:18px}.description-panel p{font-size:14px}.description-panel .badge{font-size:11px}}

.description-mode .camera-hint{display:none}.experiment-controls label:last-of-type{grid-column:1/-1}
#challenge-target{margin:10px;padding:8px;border-radius:8px;background:#173a43;color:#fff;border:1px solid #669c9c}#challenge-note{display:block;width:100%;min-height:85px;margin:10px 0;padding:12px;border:1px solid #8ea6a5;border-radius:10px;font:inherit;resize:vertical}.compare-card dd{overflow-wrap:anywhere}

.biology-link{text-decoration:none;color:#173b31;font-size:13px}.biology-entry{display:flex;flex-direction:column;gap:4px;margin:18px 0 10px;padding:12px 15px;border:1px solid #bad78d66;border-radius:12px;color:#c4ed72;text-decoration:none;background:#ffffff08}.biology-entry b{font-size:16px}.biology-entry span{font-size:12px;color:#c8dcc7}.biology-entry:hover{background:#ffffff14}@media(max-width:600px){.biology-link{font-size:11px;padding:6px 9px;min-height:35px}.topbar{padding:14px 12px}.top-actions{gap:5px}.top-actions .icon-button{width:32px;height:32px}.brand-sub{font-size:10px}.brand-name{font-size:14px}.brand-mark{width:35px;height:35px}.brand{gap:6px}}

@media(max-width:420px){.biology-link{max-width:70px;line-height:1.4;text-align:center}.top-actions{gap:3px}.topbar{gap:5px}.brand-name{font-size:13px}}
/* Keep the experiment viewport clear of the teaching panel at every landscape size. */
.bench-view .task-panel{right:12px;left:auto;width:calc(var(--panel-space) - 24px);top:148px;bottom:104px;max-height:none}
.bench-view .tools{left:calc((100% - var(--panel-space))/2);right:auto;transform:translateX(-50%);max-width:calc(100% - var(--panel-space) - 20px)}
.bench-view .molecule-labels{left:12px;right:calc(var(--panel-space) + 12px);top:92px;bottom:106px;width:auto;transform:none;overflow:auto;pointer-events:auto;background:#081c29f5;border:1px solid #42616b;border-radius:20px;padding:20px;text-align:center;color:#eff7ee}
.particle-eyebrow{display:block;color:#b8db9e;font-size:12px;letter-spacing:.04em}.molecule-labels h3{font-size:21px;margin:7px 0}.molecule-labels .particle-equation{font:18px Arial,sans-serif;color:#ecd6a4;margin:12px 0;line-height:1.6}.molecule-labels svg{display:block;width:100%;max-height:340px;margin:auto;direction:ltr}.atom-balance{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;font:15px Arial,sans-serif;background:#18353f;padding:12px;border-radius:10px}.atom-balance span{display:flex;align-items:center;gap:6px}.molecule-labels .particle-note{font-size:12px;line-height:1.9;color:#c2d4d6;margin:12px auto 0;max-width:750px}.particle-view #molecule-legend,.particle-view #metrics{display:none!important}
@media(orientation:landscape) and (max-height:550px){.bench-view .task-panel{top:69px;bottom:14px;border-radius:14px}.bench-view .chapter-chip,.bench-view .player-badge{display:none}.bench-view .task-body{padding:12px}.bench-view .task-body h2{font-size:18px}.bench-view .stage-progress{padding:10px 12px 0}.bench-view .tools{bottom:9px;padding:4px;gap:1px;width:calc(100% - var(--panel-space) - 22px)}.bench-view .tool{height:45px;min-width:0;flex:1;font-size:10px;gap:2px}.bench-view .tool .icon{height:19px;width:19px}.bench-view .metrics{left:10px;top:70px;width:106px;gap:3px}.bench-view .metric{padding:5px 8px}.bench-view .metric-title{font-size:9px}.bench-view .metric-value{font-size:19px}.bench-view .metric small{font-size:8px}.bench-view .view-controls{left:10px;bottom:68px;gap:4px;flex-direction:row}.bench-view .view-controls .text-button{padding:5px 8px;font-size:10px;min-height:29px}.bench-view .molecule-labels{top:68px;bottom:103px;padding:12px;border-radius:12px}.molecule-labels h3{font-size:17px}.molecule-labels .particle-equation{font-size:14px}.molecule-labels svg{min-height:250px}.bench-view .toast{left:calc((100% - var(--panel-space))/2);max-width:calc(100% - var(--panel-space) - 20px)}}