.lab .eyebrow{font-family:var(--font-num);letter-spacing:.05em;color:var(--muted);text-align:right;margin:1.5rem 0 .25rem;font-size:.8rem}.lab-head{max-width:70ch}.lab .lede{color:var(--muted)}.lab .steps{gap:.2rem;margin:0 0 1rem;padding-inline-start:1.4rem;display:grid}.lab .hint{color:var(--muted);font-size:.9rem}.lab .source{margin-bottom:1.25rem;padding:.75rem 1rem}.source-title{color:var(--muted);margin:0 0 .5rem;font-size:.85rem;font-weight:600}.source-row{flex-wrap:wrap;align-items:center;gap:.75rem 1.25rem;display:flex}.seg{background:var(--bg);border:1px solid var(--border);border-radius:999px;flex:26rem;grid-template-columns:repeat(3,minmax(0,1fr));gap:.25rem;max-width:34rem;padding:.25rem;display:grid}.seg button{color:var(--muted);text-wrap:balance;background:0 0;border:1px solid #0000;min-height:2.5rem;padding:.45em .6em;line-height:1.2}.seg button:hover{color:var(--text);border-color:#0000}.seg button[aria-pressed=true]{background:var(--surface);border-color:var(--border);color:var(--accent);font-weight:600;box-shadow:0 1px 3px #0000001f}.seg .short{display:none}@media (width<=420px){.seg .long{display:none}.seg .short{display:inline}}.range-pick{align-items:center;gap:.5rem;display:inline-flex}.range-pick[hidden]{display:none}.range-pick input{font:inherit;font-family:var(--font-num);min-height:40px;color:var(--text);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:.2rem .5rem}.source-note{color:var(--muted);margin:.5rem 0 0;font-size:.9rem}.source .banner-warn{margin:.5rem 0 0}.lab-grid{grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);align-items:start;gap:clamp(1.25rem,3vw,2rem);display:grid}@media (width<=900px){.lab-grid{grid-template-columns:minmax(0,1fr)}}.lab .plate{background:var(--plate);color:var(--plate-text);border-radius:var(--radius);gap:.75rem;padding:clamp(.5rem,2vw,.9rem);display:grid;position:sticky;top:1rem}@media (width<=900px){.lab .plate{position:static}}.lab .plate .hint{color:var(--plate-muted);margin:0}.platebar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.5rem;display:flex}.daylabel{font-family:var(--font-num);margin:0;font-size:.9rem}.canvasbox{aspect-ratio:1;position:relative}#sun-canvas{touch-action:none;cursor:crosshair;width:100%;height:100%;display:block}.plate-empty{pointer-events:none;place-items:center;margin:0;display:grid;position:absolute;inset:0}.plate-empty[hidden]{display:none}.lab .plate button,.lab .plate .chip{color:var(--plate-text);border-color:var(--plate-line);background:0 0}.lab .plate button:hover{border-color:var(--plate-accent)}.lab .plate button[aria-pressed=true]{background:var(--plate-active);border-color:var(--track-1);color:#fff}.lab .plate button:disabled{opacity:.5;cursor:not-allowed}.lab .plate :focus-visible{outline-color:var(--plate-accent)}.chips,.plate-tools{flex-wrap:wrap;gap:.5rem;display:flex}.chip{align-items:center;gap:.5rem;display:inline-flex}.sw{border-radius:50%;flex:none;block-size:11px;inline-size:11px;display:inline-block}.sw-1{background:var(--track-1)}.sw-2{background:var(--track-2)}.sw-c1{background:var(--chart-1)}.sw-c2{background:var(--chart-2)}.days{scrollbar-width:thin;border:1px solid var(--plate-line-2);border-radius:var(--radius-sm);display:flex;overflow-x:auto}.lab .plate .day{border:0;border-inline-start:1px solid var(--plate-line-2);min-height:3rem;color:var(--plate-muted-2);background:0 0;border-radius:0;flex:1 0 2.9rem;align-content:center;justify-items:center;gap:.1rem;padding:.3rem 0 .25rem;display:grid;position:relative}.lab .plate .day:first-child{border-inline-start:0}.day .d{font-family:var(--font-num);font-size:1rem;font-weight:600;line-height:1}.day .m{font-family:var(--font-num);opacity:.8;font-size:.7rem;line-height:1}.lab .plate .day:hover{color:#fff;background:#1d1b18}.lab .plate .day[aria-current=true]{background:var(--plate-active);color:#fff}.lab .plate .day[aria-current=true]:after{content:"";background:var(--plate-accent);border-radius:0 0 3px 3px;block-size:3px;position:absolute;inset-block-start:0;inset-inline:.4rem}.lab .plate .day:focus-visible{outline-offset:-3px}.day .dots{gap:2px;block-size:3px;margin-top:.15rem;display:flex}.day .dot{border-radius:2px;block-size:3px;inline-size:.75rem}.toggles{flex-wrap:wrap;gap:.4rem 1rem;font-size:.92rem;display:flex}.b0-toggle{cursor:pointer;display:block}.b0-toggle input{vertical-align:-.15em;margin-inline-end:.4rem}.toggles label{cursor:pointer;align-items:center;gap:.4rem;display:inline-flex}.toggles input,.b0-toggle input{block-size:1.05rem;inline-size:1.05rem}.lab .notebook{gap:1.25rem;min-width:0;display:grid}.lab .card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);gap:.75rem;min-width:0;padding:1rem;display:grid}.lab .card>*{margin:0}.results{grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem;display:grid}@media (width<=480px){.results{grid-template-columns:minmax(0,1fr)}}.res{background:var(--surface-2);border:1px solid var(--rule);border-radius:var(--radius);align-content:start;gap:.5rem;min-width:0;padding:.75rem;display:grid}.res .name{align-items:center;gap:.5rem;font-weight:600;display:flex}.res .big{font-family:var(--font-num);font-size:1.75rem;line-height:1.1}.res .big small{font-family:var(--font-body);color:var(--muted);font-size:.85rem}.res dl{grid-template-columns:auto 1fr;gap:.15rem .6rem;margin:0;font-size:.92rem;display:grid}.res dt{color:var(--muted)}.res dd{font-family:var(--font-num);text-align:left;direction:ltr;margin:0}.res .empty{color:var(--muted);margin:0;font-size:.92rem}.badge{border-radius:var(--radius);color:var(--muted);border:1px solid;padding:0 .4rem;font-size:.75rem;font-weight:400}.charthost{position:relative}.lab-chart{direction:ltr;width:100%;height:auto;display:block;overflow:visible}.lab-chart text{font-family:var(--font-num);fill:var(--muted);font-size:12px}.lab-chart .ttl{font-family:var(--font-body);font-size:13px}.lab-chart .grid{stroke:var(--rule);stroke-width:1px}.lab-chart .axis{stroke:var(--muted);stroke-width:1px}.lab-chart .limb{stroke:var(--border);stroke-dasharray:2 3}.lab-chart .pt{stroke:var(--surface);stroke-width:2px}.lab-chart .hit{fill:#0000}.lab-chart .empty-msg{font-family:var(--font-body);text-anchor:middle;font-size:14px}.legend{color:var(--muted);flex-wrap:wrap;gap:.4rem 1rem;font-size:.88rem;display:flex}.legend>span{align-items:center;gap:.4rem;display:inline-flex}.lg{border-top:2px solid var(--muted);block-size:0;inline-size:20px;display:inline-block}.lg-dash{border-top-style:dashed}.lg-dot{border-top-style:dotted;border-top-width:3px}.scheiner{border-top:1px solid var(--rule);gap:.4rem;padding-top:.75rem;display:grid}.scheiner h4{margin:0;font-size:1rem}.scheiner>*{margin:0}.scheiner input[type=range]{inline-size:100%;accent-color:var(--accent);min-height:32px}.scheiner-frac{font-size:.95rem}.lab .table-scroll{overflow-x:auto}.lab table{border-collapse:collapse;width:100%;font-size:.9rem}.lab th,.lab td{text-align:start;border-bottom:1px solid var(--rule);white-space:nowrap;padding:.35rem .5rem}.lab th{color:var(--muted);font-size:.82rem;font-weight:600}.lab td.n{font-family:var(--font-num);text-align:end;direction:ltr}.explain{border-top:1px solid var(--rule);max-width:72ch;margin-top:2.5rem;padding-top:1.5rem}.formula{font-family:var(--font-mono);text-align:left;background:var(--surface-2);border:1px solid var(--rule);border-radius:var(--radius);margin:0 0 1rem;padding:.6rem .8rem;font-size:.88rem;overflow-x:auto}.facts{gap:.35rem;margin:0 0 1rem;padding-inline-start:1.2rem;display:grid}.facts strong{margin-inline-end:.4rem}.lab .credit{max-width:72ch;margin-top:2rem}