@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');
:root{color-scheme:dark;--bg:#101311;--surface:#171b18;--border:#2c332d;--text:#edf0e9;--dim:#929c92;--lime:#b8f56b}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:'DM Sans',sans-serif;font-size:16px}button,input{font:inherit}button,a,input{touch-action:manipulation}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--lime);outline-offset:5px}main{max-width:1480px;margin:auto;padding:0 48px}header{height:96px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border)}.brand{display:flex;align-items:center;gap:7px;font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:21px;color:var(--text);text-decoration:none;letter-spacing:-1px}.brand-light{font-weight:400;color:#a6aea5}.brand-mark{font-size:19px;letter-spacing:-2px;color:var(--bg);background:var(--lime);width:35px;height:35px;display:grid;place-items:center;margin-right:9px;border-radius:7px}.header-note,.eyebrow{font-size:12px;letter-spacing:1.8px;color:var(--dim);font-weight:600}.header-note{display:flex;gap:16px;align-items:center}.live-dot{display:inline-block;width:7px;height:7px;background:var(--lime);border-radius:50%;box-shadow:0 0 10px #b8f53333}.intro{display:flex;align-items:center;justify-content:space-between;padding:36px 0 30px;gap:20px}.eyebrow{color:var(--lime);font-size:11px}h1{font-family:'Space Grotesk',sans-serif;font-size:40px;font-weight:500;letter-spacing:-1.8px;margin:9px 0}h1 em{font-style:normal;color:var(--lime)}.intro p{margin:0;color:var(--dim);font-size:15px}.button{border:1px solid var(--border);border-radius:7px;padding:12px 17px;display:flex;gap:10px;align-items:center;justify-content:center;font-size:14px;font-weight:600;white-space:nowrap}.secondary{background:transparent;color:#c5ccc2}.button:hover{filter:brightness(1.15)}.primary{background:var(--lime);color:#162010;border-color:var(--lime);min-width:122px;font-size:15px}.stats{display:grid;grid-template-columns:repeat(4,1fr);margin-bottom:22px;padding:22px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.stats>div{padding-left:30px;border-left:1px solid var(--border)}.stats>div:first-child{padding-left:0;border:0}.stats span{font-size:11px;letter-spacing:1.5px;color:var(--dim)}.stats strong{display:block;font-family:'Space Grotesk',monospace;font-weight:500;font-size:34px;line-height:1.3;margin-top:8px;font-variant-numeric:tabular-nums}.stats small{font-family:'DM Sans',sans-serif;font-size:16px;color:#778174;font-weight:400}.accent{color:var(--lime)}.arena{background:#191f19;border:1px solid #35402f;border-radius:12px;overflow:hidden;position:relative}.arena-top,.arena-bottom{display:flex;justify-content:space-between;gap:20px;padding:20px 24px;color:#9aa592;font-size:11px;letter-spacing:1.2px}.arena-top span:first-child{display:flex;align-items:center;gap:10px}.arena-top b{font-weight:500;color:#b7c4ab}.arena-bottom{padding:8px 24px 18px;font-size:12px;letter-spacing:0}.arena-bottom>span:first-child{white-space:nowrap;display:flex;align-items:center;gap:7px}#game{display:block;width:100%;height:270px}.legend-dot{display:inline-block;width:7px;height:7px;border-radius:2px;vertical-align:middle}.green{background:var(--lime)}.ghost{background:#7d956b;margin-left:10px}.muted{background:#384136}.playback{display:flex;align-items:center;gap:32px;padding:24px 0 30px}.speed-control{flex:1;max-width:520px}.speed-label{display:flex;justify-content:space-between;font-size:14px}.speed-label output{color:var(--lime);font-family:'Space Grotesk',monospace;font-weight:600}input[type=range]{width:100%;height:4px;accent-color:var(--lime);cursor:pointer;margin:18px 0 10px;display:block}.range-labels{display:flex;justify-content:space-between;font-size:11px;color:#7e887b}.speed-presets{display:flex;gap:6px}.speed-presets button{background:transparent;color:#939e8e;border:1px solid var(--border);border-radius:5px;font-size:12px;min-width:40px;padding:8px}.speed-presets .selected{color:var(--lime);border-color:#638342;background:#b8f50f0a}.playback p{font-size:12px;color:var(--dim);line-height:1.65;margin:0;border-left:1px solid var(--border);padding-left:24px}.details{display:grid;grid-template-columns:1.05fr 1fr 1fr;gap:18px}.panel{background:var(--surface);border:1px solid var(--border);border-radius:9px;padding:20px;min-width:0}.panel-title{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:20px}h2{font-size:14px;font-weight:500;margin:0}.panel-title>span{font-size:10px;color:var(--dim);letter-spacing:.4px}.panel canvas{display:block;width:100%;height:145px}.panel-foot{display:flex;gap:12px;color:#85917f;font-size:11px;margin-top:16px}.panel-foot span:last-child{margin-left:auto}.panel-foot .legend-dot{margin-right:4px}#population-grid{display:grid;grid-template-columns:repeat(30,1fr);gap:4px;height:145px;align-content:center}#population-grid i{aspect-ratio:1;border-radius:2px;background:#a8de66;transition:background .12s}#population-grid i.dead{background:#30382f}.network-labels{display:flex;justify-content:space-between;color:#85917f;font-size:11px;margin-top:16px}.network-labels span:last-child{color:var(--lime)}footer{display:flex;justify-content:space-between;align-items:center;gap:25px;padding:25px 0 30px;color:#737f70;font-size:12px}footer p{margin:0;line-height:1.7}footer b{font-weight:400;color:#a7b19f}footer>span{font-size:10px;letter-spacing:1.3px;white-space:nowrap}#pause[aria-pressed=true]{background:#d9e0d2;border-color:#d9e0d2}@media(min-width:1450px){#game{height:315px}.intro{padding-top:44px;padding-bottom:36px}}@media(max-width:1050px){main{padding:0 25px}.playback{gap:20px}.playback p{display:none}.details{grid-template-columns:1fr 1fr}.population{grid-column:1/-1}#population-grid{height:100px;grid-template-columns:repeat(50,1fr)}footer>span{display:none}}@media(max-width:620px){main{padding:0 16px}header{height:73px}.header-note{font-size:0}.intro{align-items:flex-start;flex-direction:column;padding:28px 0 22px}h1{font-size:32px}.intro p{font-size:14px}.intro .button{align-self:flex-end;padding:8px 12px;font-size:12px}.stats{grid-template-columns:1fr 1fr;gap:22px}.stats>div{padding-left:15px}.stats>div:nth-child(3){padding-left:0;border:0}.stats strong{font-size:29px}.stats span{font-size:10px}.arena-top{padding:16px;font-size:10px}.arena-top>span:last-child{display:none}#game{height:245px}.arena-bottom{padding:8px 16px 16px;flex-wrap:wrap;gap:10px;font-size:11px}.playback{flex-wrap:wrap;gap:18px;padding:20px 0}.speed-control{min-width:calc(100% - 145px)}.speed-presets{margin-left:auto}.details{grid-template-columns:1fr}.population{grid-column:auto}#population-grid{grid-template-columns:repeat(30,1fr);height:130px}.panel canvas{height:160px}footer{font-size:12px}.eyebrow{font-size:10px}}

/* Two lineages share the same simulation and collision rules. */
#population-grid{grid-template-columns:repeat(50,1fr);gap:3px;height:auto;min-height:145px}
#population-grid i.archive,.legend-dot.blue{background:#84c8ed}
#population-grid i.dead{background:#30382f}
.population .panel-foot{flex-wrap:wrap;line-height:1.6}
#archive-note{font-size:12px;color:#9cae98;line-height:1.5;margin:12px 0 0}
@media(max-width:620px){#population-grid{grid-template-columns:repeat(25,1fr);min-height:220px;gap:3px}.population .panel-foot span:last-child{margin-left:0}}

[hidden]{display:none!important}
#splash{min-height:100svh;background:#060b0e;display:grid;place-items:center;position:relative;overflow:hidden}
#splash>img{display:block;width:min(100%,1672px);height:auto;max-height:100svh;object-fit:contain}
.splash-actions{position:absolute;bottom:4%;left:0;right:0;text-align:center;padding:20px;background:linear-gradient(transparent,#060b0ecc)}
.splash-actions>p{font-family:'Space Grotesk',sans-serif;letter-spacing:5px;color:var(--lime);font-size:14px}.splash-actions>div{display:flex;gap:14px;justify-content:center}.splash-actions .secondary{background:#141e1ad9;color:#eef5e6;border-color:#829b63}.splash-actions small{display:block;margin-top:18px;color:#a2b39a;font-size:13px}
.mode-switch{display:flex;gap:8px;margin-bottom:22px}.mode-switch button{padding:12px 20px;border:1px solid var(--border);border-radius:7px;background:transparent;color:var(--dim);font-size:14px}.mode-switch .selected{background:#b8f51816;color:var(--lime);border-color:#647f45}
#race-info{display:flex;align-items:center;justify-content:space-between;gap:24px;margin:0 0 24px}#race-info p{font-size:14px;color:var(--dim);line-height:1.8}#race-info label{display:block;font-size:12px;color:var(--dim);margin-bottom:6px}select{max-width:100%;background:#1d261b;color:var(--text);padding:10px;border:1px solid var(--border);border-radius:6px;font:inherit;font-size:14px}kbd{border:1px solid #506047;border-radius:4px;padding:3px 6px;font-size:11px;color:#d5e3c9}.blue-text{color:#84c8ed}
.race-mode .stats,.race-mode .details,.race-mode .speed-control,.race-mode .speed-presets,.race-mode .playback p,.race-mode #reset{display:none}.race-mode #game{height:470px}.race-mode .intro{padding-bottom:20px}.race-mode .intro>div>p{display:none}.race-mode .arena-bottom>span:first-child{display:none}.race-mode .playback{padding:0 0 20px}
#race-controls{display:flex;align-items:center;flex-wrap:wrap;gap:14px;margin:20px 0}#race-controls small{font-size:10px;font-weight:400}#race-result{color:var(--lime)}#race-distance{margin-left:auto;font-family:'Space Grotesk',monospace;font-size:22px}#duck{touch-action:none;user-select:none}.race-mode footer p{max-width:800px}
@media(max-width:620px){#splash{display:flex;flex-direction:column;justify-content:center}#splash>img{width:100%;max-height:none}.splash-actions{position:static;margin-top:10px;padding:22px 16px}.splash-actions>div{flex-direction:column}.mode-switch button{padding:10px 12px;font-size:12px}.mode-switch{gap:7px}#race-info{flex-direction:column;align-items:flex-start;gap:4px}#race-info p{font-size:12px}.race-mode #game{height:380px}#race-controls .button{font-size:12px;padding:10px}#race-distance{font-size:17px}}

#race-end{position:absolute;z-index:2;top:50%;left:50%;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;gap:20px;text-align:center;padding:24px;background:#101811ee;border:1px solid #576d43;border-radius:12px;min-width:230px}#race-end strong{font-family:'Space Grotesk',sans-serif;font-size:26px;color:var(--lime)}#stage-hint{font-size:14px;color:#c6d69f;line-height:1.6;margin:0 0 20px;padding:12px 16px;background:#1e271a;border-left:3px solid var(--lime);border-radius:4px}#shoot{touch-action:none;user-select:none;color:#fff19b;border-color:#8b8150}#retry{border-color:#67834c;color:var(--lime)}

#force-generation{color:var(--lime);border-color:#526b38}.playback{flex-wrap:wrap}#evolution-feedback{font-size:13px;color:var(--lime);line-height:1.6;margin:0 0 18px}.race-mode #force-generation,.race-mode #evolution-feedback{display:none}#evolution-feedback:empty{display:none}

.unlock-note{margin:0 18px 12px;padding:10px 14px;border-left:3px solid #ef6258;background:#2c231c;color:#ffd3a4;font-size:14px;line-height:1.5}.save-status{font-size:14px;color:#91b782;line-height:1.6;margin:0 0 20px}header{gap:16px}header>a.button{text-decoration:none}.header-note{margin-left:auto}@media(max-width:780px){header .header-note{display:none}header>a.button{font-size:12px;padding:10px}.unlock-note{font-size:13px}}