:root{--time-gold:var(--lab-accent, #e9b86a);--time-cyan:#7bc9d2;--time-muted:#9aadb9;--time-border:#293842}
body{margin:0;background:#0b1218;color:#e6edf0;line-height:1.5}
.observatory{max-width:1440px;margin:auto;padding:30px}
.standalone-lab .observatory{padding-top:44px}
.time-header{margin-bottom:24px}.eyebrow{font-size:10px;letter-spacing:1.8px;font-weight:650;color:var(--time-gold);margin:0 0 8px}
h1{font-size:clamp(28px,4vw,40px);line-height:1.2;letter-spacing:-1.4px;margin:0 0 8px}h2{font-size:18px;margin:0 0 10px}.time-header>p:last-child{margin:0;color:var(--time-muted);font-size:14px}
.experiments{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:20px}
button,select,input[type=number]{border:1px solid var(--time-border);background:#16222c;color:#e6edf0;padding:9px 12px}
.experiments button{background:#111b23;text-align:left;font-size:13px;padding:14px 16px}.experiments span{color:var(--time-muted);font-size:10px;margin-right:10px}.experiments button[aria-pressed=true]{border-color:var(--lab-accent, var(--accent, #987c4b));background:#28251f;color:var(--lab-accent, var(--accent, #f2cb8e))}.experiments button[aria-pressed=true] span{color:var(--time-gold)}
.time-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:20px;align-items:start}.view-column{min-width:0}.scene-card,.clock-card,.drift-card,.controls,.explanation{background:#111b23;border:1px solid var(--time-border);border-radius:14px;overflow:hidden}
.scene-heading{display:flex;justify-content:space-between;gap:10px;padding:18px 20px 0;font-size:13px}.scene-heading>span:last-child{color:var(--time-muted);font-size:9px;letter-spacing:1px;padding-top:3px}
#timeScene{width:100%;height:350px;display:block;touch-action:auto}.scene-note{padding:0 20px 18px;margin:0;font-size:11px;color:var(--time-muted)}
.clock-pair{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:12px 0}.clock-card{display:flex;align-items:center;padding:18px 14px;gap:12px;min-width:0}.clock-card>div:last-child{min-width:0}.clock-tag{font-size:9px;letter-spacing:1.4px;margin:0 0 4px;color:var(--time-cyan)}.experiment .clock-tag{color:var(--time-gold)}.clock-card h2{font-size:13px;font-weight:500;margin:0 0 6px}.clock-card output{font:500 clamp(16px,1.7vw,23px)/1.3 ui-monospace,monospace;overflow-wrap:anywhere}.clock-card div>p:last-child{font-size:10px;color:var(--time-muted);margin:5px 0 0}.dial{width:64px;flex:0 0 64px;height:64px}.dial svg{display:block;width:100%;height:100%}.dial line{transform-origin:40px 40px}
.drift-card{display:grid;grid-template-columns:1fr 1fr;align-items:center;padding:18px 20px;gap:16px}.drift-card output{font:500 25px ui-monospace,monospace;color:var(--time-gold)}.drift-card p:last-child{font-size:11px;margin:7px 0 0;color:var(--time-muted)}#driftGraph{width:100%;height:auto}
.controls{padding:22px}.control-heading{margin-bottom:22px}.controls h2{font-size:21px}.controls label{display:block;font-size:12px;color:#c7d4dd}.mode-controls label>output{display:block;font:500 24px ui-monospace,monospace;color:var(--lab-accent, var(--accent, #f2cb8e));margin:8px 0 12px}input[type=range]{width:100%;margin:8px 0;min-height:24px}.range-ends{display:flex;justify-content:space-between;font-size:10px;color:var(--time-muted)}.presets{display:flex;flex-wrap:wrap;gap:6px;margin:14px 0}.presets button{font-size:11px;padding:6px 9px}.detail{font-size:11px;color:var(--time-muted);margin:12px 0;line-height:1.65}.number-label{display:flex!important;align-items:center;justify-content:space-between;gap:10px;margin-top:10px}input[type=number]{width:125px;border-radius:6px;font-size:12px;min-width:0}.rate-card{border-top:1px solid var(--time-border);border-bottom:1px solid var(--time-border);padding:16px 0;margin:20px 0}.rate-card p{margin:0 0 7px;color:var(--time-muted);font-size:11px}.rate-card output{display:block;font:500 23px ui-monospace,monospace;color:var(--time-gold);margin-bottom:7px;overflow-wrap:anywhere}.rate-card p:last-child{margin:0;line-height:1.7;color:#c2cfd7}.transport{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:18px}.transport button{font-size:12px;flex:1 1 auto}.primary{background:var(--time-gold);color:#191b1b;border-color:var(--time-gold)}select{width:100%;margin-top:6px;font-size:12px}.prediction{background:#0d161d;border-radius:9px;padding:14px;margin-top:18px}.prediction p{font-size:11px;color:var(--time-muted);margin:0 0 6px}.prediction strong{font-size:14px;color:var(--time-gold);font-weight:500}
.explanation{margin-top:20px;padding:22px;display:grid;grid-template-columns:1fr 1fr;gap:32px}.explanation p:not(.eyebrow){font-size:12px;color:#afc0cc;line-height:1.8;margin:8px 0}.explanation h2{font-size:19px}.explanation summary{cursor:pointer;font-size:13px;padding:8px 0;color:var(--time-gold)}.explanation a{color:var(--time-cyan)}.explanation .formula{font-family:ui-monospace,monospace;color:var(--lab-accent, var(--accent, #eed2a6))!important;overflow-wrap:anywhere}[hidden]{display:none!important}
@media(min-width:1500px){#timeScene{height:400px}}
@media(max-width:1050px){.time-layout{grid-template-columns:minmax(0,1fr) 290px}.controls{padding:18px}.clock-card{padding:14px 12px}.dial{width:48px;height:48px;flex-basis:48px}.clock-pair{grid-template-columns:1fr}.explanation{gap:20px}.scene-heading>span:last-child{display:none}}
@media(max-width:760px){.observatory{padding:20px 12px}.experiments{grid-template-columns:1fr;gap:6px}.experiments button{padding:11px 14px}.time-layout{grid-template-columns:1fr;gap:12px}.clock-pair{grid-template-columns:1fr 1fr;gap:8px}.clock-card{padding:14px 10px;display:block}.dial{float:right;width:34px;height:34px;margin:0 0 4px 4px}.clock-card output{font-size:16px}.clock-card h2{font-size:11px;min-height:32px}.clock-tag{font-size:8px;letter-spacing:.8px}.explanation{grid-template-columns:1fr;gap:12px;padding:18px}#timeScene{height:300px}.scene-heading{padding:16px 14px 0}.scene-note{padding:0 14px 16px}.drift-card{padding:16px 14px;grid-template-columns:1.2fr 1fr;gap:6px}.drift-card output{font-size:21px}.eyebrow{letter-spacing:1.3px;font-size:9px}.controls{padding:20px}.clock-card div>p:last-child{clear:both}.time-header{margin-bottom:20px}}