:root{color-scheme:dark;--bg:#101815;--panel:#17211d;--panel2:#1c2822;--line:#354138;--text:#eeeede;--muted:#a4afa2;--gold:#efc878;--mint:#9fc5a5;--orange:#c68e76;--serif:Georgia,'Times New Roman',serif;--sans:'Segoe UI',Arial,sans-serif;--mono:Consolas,'Courier New',monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:20px}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.6 var(--sans)}a{color:inherit;text-underline-offset:4px}button,input,select{font:inherit}button,a,input,select,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--gold);outline-offset:5px}button{transition:background .15s,color .15s;border-radius:5px}button:hover{filter:brightness(1.15)}button:disabled{opacity:.4;cursor:not-allowed}button:active{transform:translateY(1px)}.site-header,main,footer{max-width:1392px;margin:0 auto;padding:0 48px}.site-header{height:100px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.wordmark{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:650;letter-spacing:3px;text-decoration:none}.slash{color:var(--gold);font-weight:300}.sun-mark{color:var(--gold);font-size:36px;line-height:1}.edition,.eyebrow,.section-number,.tag{font-size:10px;letter-spacing:1.7px;font-weight:600}.edition{color:var(--muted)}.source-link{font-size:12px;text-decoration:none;border:1px solid var(--line);padding:9px 15px;border-radius:30px}.source-link span{color:var(--gold);margin-left:12px}.intro{display:grid;grid-template-columns:1.2fr 1fr;align-items:center;gap:70px;padding:62px 0 52px}.eyebrow{display:block;margin:0 0 13px;color:var(--muted)}.live-dot{display:inline-block;background:var(--gold);width:6px;height:6px;border-radius:50%;margin-right:8px;vertical-align:middle}h1{font:400 clamp(54px,6vw,86px)/1.04 var(--serif);letter-spacing:-3.2px;margin:21px 0 0}h1 em{color:var(--gold);font-weight:400}h2{font:400 27px/1.2 var(--serif);letter-spacing:-.5px;margin:8px 0 0}h3{font-size:15px;font-weight:600;margin:0 0 6px}p{margin:0 0 14px}.intro-copy{max-width:440px;padding-top:28px}.intro-copy>p:first-child{font:400 23px/1.5 var(--serif)}.intro-copy .muted{font-size:14px}.muted{color:var(--muted)}.text-link{font-size:11px;letter-spacing:.2px;color:var(--gold)}.time-bar{display:flex;align-items:center;gap:30px;background:#e5e8d7;color:#243328;padding:22px 26px;border-radius:8px 8px 0 0}.date-display{min-width:170px}.date-display .eyebrow{font-size:8px;letter-spacing:1.2px;color:#586553;margin:0}.date-display strong{display:block;font:400 25px var(--serif);margin-top:4px}.timeline{flex:1;min-width:100px}.month-labels{display:flex;justify-content:space-between;font:9px var(--mono);color:#5b6656}.transport{display:flex;gap:7px}.icon-button{background:transparent;border:1px solid #a3ad98;color:#33412e;padding:8px;font:11px var(--mono)}.play-button{background:#273e2f;color:#eff1e3;border:0;padding:9px 15px;font-size:12px;min-width:106px}.play-button span{margin-left:7px}input[type=range]{width:100%;height:20px;accent-color:var(--gold);cursor:pointer;margin:8px 0;background:transparent}.time-bar input{accent-color:#3d5c42}.main-grid{display:grid;grid-template-columns:1.8fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-top:0;border-radius:0 0 8px 8px;overflow:hidden}.panel{background:var(--panel);border:1px solid var(--line);border-radius:8px;overflow:hidden;padding:26px}.main-grid>.panel{border:0;border-radius:0}.panel-heading{display:flex;justify-content:space-between;align-items:start;gap:12px}.section-number{color:var(--muted);font-size:9px;letter-spacing:1.4px}.tag{font:8px var(--mono);letter-spacing:1px;border:1px solid var(--line);padding:6px 9px;border-radius:3px;color:var(--muted);white-space:nowrap}.orbit-panel{padding-bottom:17px}canvas{display:block;width:100%;height:auto}.orbit-panel canvas{margin:0 -16px;width:calc(100% + 32px)}.orbit-metrics{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding:15px 0 6px;gap:16px}.orbit-metrics span,.mini-metrics span{display:block;font-size:10px;color:var(--muted);margin-bottom:4px}.orbit-metrics strong{font:19px var(--mono);font-weight:400}.caption{color:var(--muted);font-size:10px;line-height:1.7;margin:10px 0 0}.clock-panel{display:flex;flex-direction:column}.clock-panel h2{font-size:30px;margin-bottom:26px}.clock-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 0;border-top:1px solid var(--line);font-size:12px}.clock-row strong{font:22px var(--mono);font-weight:400;white-space:nowrap}.small-note{display:block;font-size:9px;color:var(--muted);margin-left:13px;margin-top:2px}.key-dot{display:inline-block;width:6px;height:6px;border-radius:50%;margin:0 6px 1px 0}.mean{background:var(--mint)}.solar{background:var(--gold)}.orbit-color{background:var(--orange)}.solar-clock strong{color:var(--gold)}.eot-display{background:#233027;border:1px solid #44513b;border-radius:6px;padding:18px;margin-top:14px}.eot-display .eyebrow{font-size:9px;margin-bottom:3px}.eot-display strong{font:50px/1.2 var(--serif);color:var(--gold);letter-spacing:-1px}.eot-display div>span{font:12px var(--mono);color:var(--muted);margin-left:10px}.eot-display p{font-size:11px;margin:4px 0 0}.formula{font:11px var(--mono);color:var(--muted);margin:13px 0}.video-ref{color:var(--muted);font-size:10px;white-space:nowrap;text-decoration:none}.clock-panel .video-ref{margin-top:auto}.experiment-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:26px 0 16px}.experiment-bar .eyebrow{font-size:9px;color:var(--gold);margin:0 0 3px}.experiment-bar p{font-size:11px;color:var(--muted);margin:0}.presets{display:flex;padding:4px;background:#1a251f;border:1px solid var(--line);border-radius:6px;gap:3px}.presets button{font-size:11px;border:0;background:transparent;color:var(--muted);padding:9px 15px;white-space:nowrap}.presets button[aria-pressed=true]{background:#e5e8d7;color:#263d2b}.text-button{background:transparent;border:0;color:var(--gold);padding:6px 0;font-size:11px}.parameter-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:34px;padding:0 0 26px}.parameter-row label{font-size:11px;color:var(--muted)}output{float:right;color:var(--text);font:11px var(--mono)}.parameter-row p{font-size:10px;color:var(--muted);padding:7px 0;margin:0;max-width:320px}.two-up{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:20px}.mini-metrics{display:flex;gap:18px;justify-content:space-between;border-top:1px solid var(--line);padding:14px 0}.mini-metrics strong{font:15px var(--mono);font-weight:400}.lesson{font-size:12px;color:#c9d1c3;line-height:1.8;margin:7px 0 10px}.quick-dates{display:flex;gap:7px;flex-wrap:wrap;margin-top:14px}.quick-dates button,.secondary-button{border:1px solid var(--line);color:#c9d4c2;background:#243128;padding:7px 10px;font-size:10px}.quick-dates button:hover,.secondary-button:hover{border-color:var(--mint)}.spin-progress label{font-size:11px;color:var(--muted)}.spin-progress .quick-dates{margin:2px 0 16px}.equation-panel{margin-bottom:20px}.legend{display:flex;gap:16px;font-size:10px;color:var(--muted);padding-top:7px}.legend span{white-space:nowrap}.graph-layout{display:grid;grid-template-columns:minmax(0,1fr) 205px;gap:32px;margin:12px 0 26px;align-items:center}.difference-note{border-left:1px solid var(--line);padding-left:22px;font-size:11px}.difference-note .eyebrow{font-size:9px}.difference-note strong{font:32px var(--serif);color:var(--gold)}.difference-note p{margin:8px 0 0}.table-heading{display:flex;gap:20px;align-items:center;border-top:1px solid var(--line);padding:23px 0 13px}.table-heading>div{flex:1}.table-heading p{font-size:11px;color:var(--muted);margin:0}.table-heading label{font-size:10px;color:var(--muted);white-space:nowrap}select{background:#223027;color:var(--text);border:1px solid var(--line);border-radius:4px;padding:7px 10px;font-size:11px;cursor:pointer}.table-heading select{margin-left:7px}.selected-correction{display:flex;gap:20px;background:#263529;border-left:2px solid var(--gold);padding:11px 15px;font-size:12px;margin:5px 0 12px}.selected-correction strong{color:var(--gold);min-width:105px}.table-scroll{max-height:280px;overflow:auto;border:1px solid var(--line);border-radius:5px;scrollbar-color:#64715e #1a241e}table{border-collapse:collapse;width:100%;font-size:11px}th,td{text-align:left;padding:10px 18px;border-bottom:1px solid #2c382f}thead{position:sticky;top:0;background:#243128}th{font-size:9px;color:var(--muted);font-weight:500;letter-spacing:.4px}td:not(:first-child){font-family:var(--mono)}td button{color:var(--text);background:none;border:none;padding:0;font-size:11px;text-decoration:underline;text-underline-offset:3px}tr.selected{background:#34412e}tr.selected td{color:var(--gold)}tbody tr:hover{background:#243328}.sunquest{padding-top:20px;border-top:1px solid var(--line);margin-top:20px}.sunquest p{font-size:12px;color:#c9d1c3}.sunquest p.caption{font-size:10px;color:var(--muted)}.checkbox-label{display:flex;gap:9px;align-items:center;font-size:11px;cursor:pointer}.checkbox-label input{accent-color:var(--gold);width:15px;height:15px}.corrected-readout{background:#233027;display:flex;align-items:center;justify-content:space-between;padding:14px;border-radius:5px;margin:15px 0;font-size:11px}.corrected-readout strong{font:22px var(--mono);color:var(--gold)}.location-row{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-top:20px}.location-row label{font-size:10px;color:var(--muted)}.location-row select{margin-left:8px}.time-of-day{font-size:11px;color:var(--muted);display:block}.location-details{margin-top:16px;border-top:1px solid var(--line);padding-top:10px}.location-details summary{font-size:11px;color:var(--muted);cursor:pointer}.location-inputs{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:15px 0}.location-inputs label{font-size:9px;color:var(--muted)}input[type=number]{display:block;background:#223027;color:var(--text);border:1px solid var(--line);width:100%;border-radius:4px;padding:7px;margin-top:4px;font:12px var(--mono)}.location-details p{font-size:11px;color:var(--muted);margin-top:12px}.conversion{font:11px/1.8 var(--mono);background:#223027;padding:12px;border-radius:4px;white-space:pre-line}.cloud-control{margin-top:14px}.field-notes{display:grid;grid-template-columns:1fr 2fr;gap:60px;margin:64px 0 34px}.notes-intro h2{font-size:34px;margin-bottom:16px}.notes-intro p:last-child{font-size:12px;color:var(--muted)}.notes-list details{border-top:1px solid var(--line);padding:15px 0}.notes-list details:last-child{border-bottom:1px solid var(--line)}.notes-list summary{cursor:pointer;font-size:13px;list-style:none;display:flex;align-items:baseline;gap:15px}.notes-list summary:before{content:'+';color:var(--gold)}.notes-list details[open] summary:before{content:'−'}.notes-list summary>span{font:10px var(--mono);color:var(--muted)}.notes-list summary>a{font:9px var(--mono);color:var(--muted);margin-left:auto;white-space:nowrap}.notes-list details p{font-size:12px;color:#bdc8b8;margin:16px 0 3px 48px}.model-notes{border-top:1px solid var(--line);padding:20px 0 35px;color:var(--muted);font-size:11px}.model-notes summary{cursor:pointer}.model-notes p{max-width:900px;margin-top:16px}footer{border-top:1px solid var(--line);padding-top:25px;padding-bottom:35px;display:flex;align-items:center;justify-content:space-between;gap:20px}footer .wordmark{font-size:12px}footer>span,footer>a:last-child{font-size:10px;color:var(--muted)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip{position:absolute;top:-100px;left:20px;z-index:20;background:var(--gold);color:#142015;padding:10px}.skip:focus{top:10px}.noscript{padding:20px;background:var(--gold);color:#142015;position:fixed;bottom:0;width:100%;margin:0}
@media(min-width:1500px){.site-header,main,footer{max-width:1460px}}
@media(max-width:1100px){.site-header,main,footer{padding-left:28px;padding-right:28px}.intro{gap:35px}.main-grid{grid-template-columns:1.5fr 1fr}.panel{padding:20px}.clock-row{flex-wrap:wrap;gap:4px}.clock-row strong{font-size:23px}.legend{flex-wrap:wrap;gap:8px}.equation-panel .panel-heading{flex-wrap:wrap}.mini-metrics{gap:10px}.mini-metrics strong{font-size:12px}.experiment-bar{flex-wrap:wrap}.graph-layout{grid-template-columns:minmax(0,1fr) 180px;gap:12px}.clock-panel h2{font-size:26px}}
@media(max-width:760px){.site-header,main,footer{padding-left:18px;padding-right:18px}.site-header{height:76px}.edition{display:none}.wordmark{font-size:14px}.sun-mark{font-size:28px}.source-link{font-size:10px;padding:7px 10px}.intro{grid-template-columns:1fr;gap:20px;padding:36px 0}.intro h1{font-size:62px}.intro-copy{padding:0;max-width:100%}.intro-copy>p:first-child{font-size:20px}.time-bar{flex-wrap:wrap;padding:17px;gap:16px}.date-display{min-width:140px}.timeline{order:3;flex-basis:100%}.transport{margin-left:auto}.main-grid{grid-template-columns:1fr}.clock-panel{border-top:1px solid var(--line)!important}.clock-panel h2{font-size:29px}.clock-panel h2 br{display:none}.clock-row{flex-wrap:nowrap}.clock-row strong{font-size:27px}.eot-display{padding:15px 20px}.eot-display strong{font-size:45px}.experiment-bar{gap:12px;margin:22px 0 12px}.presets{order:3;width:100%;justify-content:space-between}.presets button{padding:8px 11px}.parameter-row{grid-template-columns:1fr 1fr;gap:20px}.parameter-row p{grid-column:1/-1;max-width:none;padding:0}.two-up{grid-template-columns:1fr}.panel{padding:20px}.panel h2{font-size:26px}.mini-metrics strong{font-size:14px}.graph-layout{grid-template-columns:1fr;gap:14px}.difference-note{border-left:0;border-top:1px solid var(--line);padding:15px 0 0}.difference-note strong{font-size:28px}.table-heading{flex-wrap:wrap;gap:12px}.table-heading>div{flex-basis:100%}.selected-correction{gap:10px;font-size:11px}th,td{padding:10px;white-space:nowrap}.field-notes{grid-template-columns:1fr;gap:20px;margin:40px 0 25px}.notes-intro{max-width:420px}.notes-list summary{font-size:12px;gap:9px}.notes-list details p{margin-left:20px}.notes-list summary>span{display:none}footer{flex-wrap:wrap}footer>span{display:none}.orbit-metrics strong{font-size:17px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}button{transition:none}}

.utc-display{font:10px var(--mono);color:#586553;display:block;margin-top:4px}
.transport select{background:transparent;color:#33412e;border-color:#a3ad98;font-size:10px;max-width:110px}
.map-panel{margin-bottom:20px;scroll-margin-top:125px}
.map-layout{display:grid;grid-template-columns:minmax(0,1fr) 235px;gap:28px;align-items:center;margin-top:20px}
#world-map{cursor:crosshair;touch-action:none;border-radius:4px}
.map-readout{border-left:1px solid var(--line);padding-left:24px;font-size:11px}
.map-readout>.eyebrow{font-size:9px;margin-bottom:5px}
.map-readout>strong{font:19px var(--mono);display:block;margin-bottom:17px}
.map-readout>label:not(.checkbox-label){display:block;color:var(--muted);font-size:10px}
.map-readout select{display:block;width:100%;margin-top:7px}
.map-subsolar{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:17px 0;margin:17px 0}
.map-subsolar .eyebrow{font-size:8px;color:var(--gold);margin-bottom:6px}
.map-subsolar strong{font:15px var(--mono);color:var(--gold)}
.map-subsolar p{color:var(--muted);margin:10px 0}
.map-readout .checkbox-label{align-items:start;font-size:10px}
.map-readout .checkbox-label input{flex-shrink:0}
.location-row>span{font-size:11px}
@media(max-width:1100px){.map-layout{grid-template-columns:minmax(0,1fr) 195px;gap:18px}.map-readout{padding-left:18px}.transport{flex-wrap:wrap;justify-content:flex-end}}
@media(max-width:760px){.map-layout{grid-template-columns:1fr;gap:20px}.map-readout{border-left:0;border-top:1px solid var(--line);padding:20px 0 0}.map-panel .panel-heading{flex-wrap:wrap}.transport{max-width:180px;gap:5px}.transport select{flex-basis:100%;max-width:none;width:100%;padding:3px 8px}.map-panel{scroll-margin-top:170px}}

/* One sticky comparison and shared instant, including while reading the notes. */
.time-bar{position:sticky;top:0;z-index:10;display:grid;grid-template-columns:155px minmax(140px,1fr) auto;gap:10px 24px;padding:12px 22px;box-shadow:0 4px 12px #080e0b30}
.sticky-clocks{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr 1.25fr;gap:20px;border-bottom:1px solid #b7c0aa;padding-bottom:9px}
.sticky-clock{min-width:0;display:flex;flex-direction:column;gap:1px}
.sticky-clock+.sticky-clock{border-left:1px solid #bac3af;padding-left:20px}
.sticky-clock-label{font-size:10px;font-weight:600;line-height:1.35}
.sticky-clock strong{font:23px/1.15 var(--mono);font-variant-numeric:tabular-nums;white-space:nowrap;font-weight:400}
.sticky-clock-note{color:#53634d;font-size:9px;line-height:1.35}
.sticky-eot-reading{display:flex;gap:6px;align-items:baseline;flex-wrap:wrap}
.sticky-eot-reading>span{font-size:10px;line-height:1.2}
.sticky-eot-reading #sticky-eot-direction{color:#53634d}
.date-display{min-width:0}
.date-display strong{font-size:22px}
.date-display .eyebrow{font-size:7px;letter-spacing:.8px}
.utc-display{margin-top:3px}
.scrub-controls{min-width:0}
.time-bar input[type=range]{display:block;height:18px;margin:3px 0}
.month-labels{font-size:8px;line-height:1.3}
.utc-scrubber{display:flex;align-items:center;gap:12px;margin-top:5px}
.utc-scrubber label{flex-shrink:0;font-size:9px;line-height:1.3;color:#53634d}
.utc-scrubber input{min-width:0}
.transport{align-items:center}
.map-panel{margin-top:20px}
.simulation,.map-panel,.geometry-row,.equation-panel,.analemma-panel,.observer-panel,.field-notes,.model-notes{scroll-margin-top:180px}
@media(max-width:1100px){
  .time-bar{grid-template-columns:138px minmax(100px,1fr) 210px;gap:10px 17px;padding:11px 18px}
  .transport{max-width:none;justify-content:flex-end}
  .transport select{flex-basis:100%;max-width:none;padding:3px 8px}
  .transport .play-button{min-width:100px}
}
@media(max-width:760px){
  .time-bar{grid-template-columns:minmax(0,1fr) auto;gap:7px 12px;padding:10px 12px}
  .sticky-clocks{gap:10px;padding-bottom:7px;grid-template-columns:1fr 1fr 1.45fr}
  .sticky-clock+.sticky-clock{padding-left:10px}
  .sticky-clock-label{font-size:9px}
  .sticky-clock strong{font-size:15px;line-height:1.25}
  .sticky-clock-note{font-size:8px}
  .sticky-eot-reading{gap:3px}
  .sticky-eot-reading>span{font-size:9px}
  .date-display strong{font-size:21px}
  .date-display .eyebrow{font-size:7px;letter-spacing:.7px;max-width:128px}
  .scrub-controls{grid-column:1/-1;grid-row:3}
  .timeline{min-width:0}
  .utc-scrubber{margin-top:2px}
  .transport{margin-left:0;max-width:180px;gap:5px}
  .transport .play-button{min-width:84px;padding:7px 8px;font-size:11px}
  .play-button span{margin-left:3px}
  .icon-button{padding:6px 5px;font-size:10px}
  .simulation,.map-panel,.geometry-row,.equation-panel,.analemma-panel,.observer-panel,.field-notes,.model-notes{scroll-margin-top:225px}
}
@media(max-width:380px){
  .time-bar{padding:8px;column-gap:8px}
  .sticky-clocks{gap:6px;grid-template-columns:1fr 1fr 1.6fr}
  .sticky-clock+.sticky-clock{padding-left:6px}
  .sticky-clock strong{font-size:13px}
  .sticky-clock-label{font-size:8px}
  .sticky-clock-note{font-size:7px}
  .date-display strong{font-size:19px}
  .date-display .eyebrow{font-size:6px}
  .transport{max-width:165px;gap:4px}
  .transport .play-button{min-width:74px}
}