:root{color-scheme:dark;--bg:#060c13;--panel:#0c1620;--line:#21303c;--text:#eff5f5;--muted:#8a9da9;--accent:#81e5cb}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px "Helvetica Neue",Helvetica,Arial,sans-serif}button,input,select{font:inherit}button{cursor:pointer;border:1px solid var(--line);background:transparent;color:var(--text);padding:10px 15px;border-radius:6px}button:hover{border-color:var(--accent);color:var(--accent)}button:disabled{opacity:.45;cursor:wait}button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:4px}.brand{display:flex;align-items:center;gap:12px;font:700 34px "Helvetica Neue",Helvetica,Arial,sans-serif;text-decoration:none;color:var(--text);letter-spacing:-2px}.brand-icon{color:var(--accent);font-size:38px}.brand-sub{font:500 11px "Helvetica Neue",Helvetica,Arial,sans-serif;letter-spacing:2px;margin:8px 0 0 18px;color:var(--muted)}main{display:grid;grid-template-columns:minmax(0,1fr) 312px;min-height:560px;height:calc(100dvh - 184px)}#stage{position:relative;overflow:hidden;background:radial-gradient(ellipse at 48% 45%,#102332 0,transparent 65%)}#globe{position:absolute;inset:0}#globe canvas{width:100%;height:100%;display:block;touch-action:none}.scene-label{position:absolute;z-index:2;top:32px;left:36px;pointer-events:none}.eyebrow{font-size:11px;letter-spacing:2px;font-weight:600;color:var(--accent)}h1{font:700 26px "Helvetica Neue",Helvetica,Arial,sans-serif;margin:9px 0}.scene-label p{font-size:13px;color:var(--muted);margin:0}.epoch{position:absolute;bottom:25px;left:36px;pointer-events:none}.epoch strong{font:700 clamp(72px,7.5vw,112px)/1.08 "Helvetica Neue",Helvetica,Arial,sans-serif;letter-spacing:3px;font-variant-numeric:tabular-nums}.epoch div{display:flex;flex-direction:column;align-items:flex-start;gap:6px;margin-bottom:12px}.epoch div span{font-size:clamp(26px,2.4vw,36px);font-weight:700;line-height:1.2;color:#eff5f5}.epoch p{font-size:13px;color:var(--muted);margin:0 0 14px}.epoch #model-badge{font-size:11px;color:#90a8b5;}.view-tools{position:absolute;right:24px;bottom:28px;display:flex;gap:6px}.view-tools button{background:#0b1723c9;width:39px;padding:8px}.panel-heading{display:flex;justify-content:space-between;align-items:center}.tag{font-size:10px;border:1px solid var(--line);border-radius:4px;padding:4px;color:var(--muted)}aside{background:var(--panel);border-left:1px solid var(--line);padding:28px 23px;overflow:auto}h2{font:700 23px "Helvetica Neue",Helvetica,Arial,sans-serif;margin:14px 0 24px}.field-label{display:block;font-size:14px;font-weight:500;margin-bottom:12px}select,input[type=number]{background:#101f2b;border:1px solid #30414e;border-radius:5px;color:var(--text);padding:11px;width:100%;font-size:14px}select{cursor:pointer}.subtle{font-size:12px;color:var(--muted);line-height:1.5}.divider{height:1px;background:var(--line);margin:21px 0}.toggle-row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:15px 0;font-size:14px;color:#b7c5ce}.toggle-row input{appearance:none;width:30px;height:17px;background:#2d3c48;border-radius:12px;position:relative;cursor:pointer;flex-shrink:0}.toggle-row input:after{content:'';width:11px;height:11px;position:absolute;top:3px;left:3px;border-radius:50%;background:#91a0aa;transition:.2s}.toggle-row input:checked{background:#316e65}.toggle-row input:checked:after{left:16px;background:#92f3d9}output{float:right;color:var(--accent);font-size:12px}input[type=range]{width:100%;accent-color:var(--accent);cursor:pointer;height:5px}.studio-card{background:linear-gradient(120deg,#15312f,#13232f);border:1px solid #31504c;border-radius:8px;padding:18px}.studio-card h3{font:700 21px "Helvetica Neue",Helvetica,Arial,sans-serif;margin:12px 0 8px}.studio-card p{font-size:12px;color:#a6bdbf;line-height:1.7}.primary{background:var(--accent);border-color:var(--accent);color:#08261f;width:100%;font-weight:600;font-size:14px}.primary:hover{background:#b2f6e4;color:#08261f}.primary span{float:right}footer{border-top:1px solid var(--line);padding:19px 36px 20px;height:184px}.transport{display:flex;gap:15px;align-items:center;margin-bottom:23px}.transport strong{font-size:14px;font-weight:500}.transport p{font-size:12px;margin:5px 0 0;color:var(--muted)}.play{border-radius:50%;width:40px;height:40px;background:var(--accent);color:#08261f;border:0;padding:0}.quiet{margin-left:auto;font-size:12px;color:#a9bbc6}.timeline-labels{display:flex;justify-content:space-between;margin-top:13px}.timeline-labels button{padding:0;border:0;font-size:12px;text-align:left;color:#bfcdd4}.timeline-labels span{display:block;font-size:10px;letter-spacing:1.5px;color:#647b8c;margin-top:5px}#load-status{position:absolute;top:30px;right:24px;color:var(--muted);font-size:12px;max-width:220px}dialog{background:#101d28;color:var(--text);border:1px solid #38505b;border-radius:12px;max-width:620px;width:calc(100% - 32px);padding:34px;max-height:90dvh}dialog::backdrop{background:#01060bbb;backdrop-filter:blur(6px)}dialog p,dialog li{font-size:14px;color:#acbdc8;line-height:1.65}dialog a{color:var(--accent)}.close{float:right;font-size:24px;line-height:18px;padding:4px;border:0}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px}.form-grid label{font-size:13px;color:#b5c7d0}.form-grid input,.form-grid select{margin-top:8px}progress{width:100%;accent-color:var(--accent);margin:15px 0}#export-status{min-height:24px;font-size:13px;line-height:1.5;color:var(--accent)}.error{color:#ffad98!important}.download{display:block;padding:12px;text-align:center;border:1px solid var(--accent);border-radius:5px;margin-top:12px}.recording aside,.recording footer{pointer-events:none;opacity:.5}.recording #globe{pointer-events:none}@media(max-height:850px) and (min-width:801px){main{min-height:480px;height:calc(100dvh - 170px)}footer{height:170px}aside{padding-top:20px}.divider{margin:15px 0}.toggle-row{margin:12px 0}.studio-card{padding:13px}}@media(max-width:800px){.brand-sub{display:none}main{display:block;height:auto}#stage{height:65dvh;min-height:480px}aside{border-left:0;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:10px 22px}.panel-heading,aside h2,aside .divider{grid-column:1/-1}.studio-card{grid-column:1/-1}footer{position:sticky;bottom:0;height:170px;background:#08111bf5;padding:16px 20px}.scene-label{left:20px}.epoch{left:20px}.epoch strong{font-size:clamp(54px,12vw,80px);letter-spacing:2px}#load-status{top:auto;bottom:8px;right:15px;font-size:10px}.scene-label h1{font-size:23px}.view-tools{bottom:80px;right:12px}.form-grid{gap:13px}dialog{padding:25px}}

[hidden]{display:none!important}

@media(max-width:800px){body{padding-bottom:170px}footer{position:fixed;left:0;right:0;bottom:0;z-index:5}}

#city-overlay{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:1}.epoch{z-index:2}#illustration-note{color:#d1c196;font-size:11px;max-width:420px;margin:8px 0 0}.buffer-panel{display:grid;gap:10px;margin-top:16px}.buffer-panel .quiet{margin:0;width:100%;font-size:13px}.buffer-panel p{margin:0}#sun-controls{margin-top:16px}#preview-quality{margin-bottom:8px}#city-note{margin-top:-4px}#stage.space-mode{background:#030609}.view-tools{z-index:3}.recording #city-overlay{visibility:hidden}@media(max-width:800px){aside{display:block}#illustration-note{max-width:270px}.epoch #model-badge{font-size:10px}}

.ice-presets{display:grid;gap:7px;margin:12px 0}.ice-presets .quiet{margin:0;text-align:left}#recent-note{color:#b7c9d1}

#stage.flat-mode{background:#060c13}#stage.flat-mode #globe canvas{cursor:grab}#stage.flat-mode #globe canvas:active{cursor:grabbing}

h1,h2,h3,.eyebrow,.field-label,.transport strong{font-weight:700}

#period{display:block;font-size:20px;letter-spacing:2.5px;margin-bottom:8px}.panel-heading{gap:10px;margin-bottom:20px}#science{border:0;padding:4px 0 4px 6px;font-size:12px;color:var(--muted)}.panel-heading .tag{margin-left:auto}.epoch{right:24px}#age-unit{white-space:nowrap}@media(max-width:800px){#period{font-size:18px}.epoch div span{font-size:clamp(22px,5.5vw,30px)}}