.romer-light-model{--rl-bg:var(--paper);--rl-ink:var(--ink);--rl-dim:var(--dim);--rl-line:var(--rule);--rl-accent:var(--accent);border:1px solid var(--rl-line);background:var(--rl-bg);max-width:100%;color:var(--rl-ink);border-radius:6px;padding:1.1rem;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,sans-serif;overflow:hidden}.prose>figure.romer-light-model{grid-column:text}.romer-light-model *{box-sizing:border-box}.rl-head{justify-content:space-between;align-items:flex-start;gap:1rem;margin-bottom:.85rem;display:flex}.rl-kicker{color:var(--rl-dim);letter-spacing:.1em;text-transform:uppercase;font-size:.67rem}.rl-title{margin-top:.2rem;font-size:.9rem;font-weight:650;line-height:1.35}.rl-day{color:var(--rl-accent);font-variant-numeric:tabular-nums;text-align:right;flex:none}.rl-day span{font-size:1.55rem;font-weight:650;line-height:1;display:block}.rl-day small{color:var(--rl-dim);letter-spacing:.08em;text-transform:uppercase;margin-top:.2rem;font-size:.62rem;display:block}.rl-stage{border-block:1px solid var(--rl-line);background:radial-gradient(circle at center, color-mix(in srgb, var(--rl-accent) 4%, transparent), transparent 54%);isolation:isolate;min-height:clamp(19rem,54vw,30rem);position:relative;overflow:hidden}.rl-orbit{border:1px solid var(--rl-line);border-radius:50%;position:absolute;top:50%;left:50%;translate:-50% -50%}.rl-sun,.rl-body,.rl-jupiter-system,.rl-pulse{position:absolute;top:50%;left:50%;translate:-50% -50%}.rl-sun{z-index:3;background:var(--rl-accent);width:1.4rem;height:1.4rem;box-shadow:0 0 0 .35rem color-mix(in srgb, var(--rl-accent) 13%, transparent);border-radius:50%}.rl-sun span,.rl-body-label{color:var(--rl-dim);white-space:nowrap;font-size:.68rem;line-height:1;position:absolute;top:calc(100% + .45rem);left:50%;translate:-50%}.rl-body{z-index:6;background:var(--rl-ink);border-radius:50%}.rl-earth{background:var(--rl-dim);width:.72rem;height:.72rem}.rl-jupiter{width:1.15rem;height:1.15rem}.rl-jupiter-system{z-index:5;width:1px;height:1px}.rl-io{background:var(--rl-accent);width:.48rem;height:.48rem}.rl-io .rl-body-label{top:calc(100% + .35rem)}.rl-io-orbit{border:1px solid var(--rl-line);border-radius:50%;width:4.2rem;height:4.2rem;position:absolute;top:0;left:0;translate:-50% -50%}.rl-shadow{z-index:1;transform-origin:0;clip-path:polygon(0 28%,100% 0,100% 100%,0 72%);background:linear-gradient(90deg, color-mix(in srgb, var(--rl-ink) 18%, transparent), transparent);width:3.6rem;height:1.05rem;position:absolute;top:0;left:0;translate:0 -50%}.rl-beam{z-index:2;transform-origin:0;border-top:1px dashed var(--rl-accent);opacity:.22;height:1px;position:absolute}.rl-pulse{z-index:7;background:var(--rl-accent);width:.65rem;height:.65rem;box-shadow:0 0 0 .35rem color-mix(in srgb, var(--rl-accent) 18%, transparent);border-radius:50%;display:none}.rl-stage[data-phase=instant] .rl-beam{opacity:.9;border-top-style:solid}.rl-stage[data-phase=travel] .rl-pulse{display:block}.rl-flash{border:2px solid var(--rl-accent);opacity:0;border-radius:50%;width:100%;height:100%;position:absolute;top:50%;left:50%;translate:-50% -50%}.rl-body.is-flashing .rl-flash{animation:.8s ease-out rl-flash}@keyframes rl-flash{0%{opacity:.9;scale:1}to{opacity:0;scale:4.5}}.rl-replay{z-index:10;border:1px solid var(--rl-accent);background:color-mix(in srgb, var(--rl-bg) 94%, transparent);width:max-content;max-width:calc(100% - 1.4rem);min-height:2.75rem;color:var(--rl-ink);font:inherit;cursor:pointer;border-radius:999px;padding:.55rem .85rem;font-size:.74rem;display:none;position:absolute;bottom:.85rem;left:50%;translate:-50%}.rl-stage.is-complete .rl-replay{display:block}.rl-readout{border-bottom:1px solid var(--rl-line);grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem;padding:.9rem 0;display:grid}.rl-readout div{flex-direction:column;display:flex}.rl-readout strong{font-variant-numeric:tabular-nums;font-size:1.25rem;line-height:1.15}.rl-readout div:last-child strong{color:var(--rl-accent)}.rl-readout span{color:var(--rl-dim);margin-top:.2rem;font-size:.68rem;line-height:1.3}.romer-light-model figcaption{margin-bottom:0}@media (width<=36rem){.romer-light-model{padding:.8rem}.rl-stage{min-height:20rem}.rl-title{max-width:17rem}}@media (prefers-reduced-motion:reduce){.rl-body.is-flashing .rl-flash{animation:none}}.prose>figure.latitude-polaris{grid-column:text}.latitude-polaris{--lp-ink:var(--ink);--lp-dim:var(--dim);--lp-line:var(--rule);--lp-bg:var(--paper);--lp-accent:var(--accent);color:var(--lp-ink);background:var(--lp-bg);border:1px solid var(--lp-line);box-sizing:border-box;border-radius:6px;max-width:100%;padding:18px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,sans-serif}.latitude-polaris *{box-sizing:border-box}.lp-panels{grid-template-columns:1fr 1fr;align-items:start;gap:12px;display:grid}.lp-diagram,.lp-proof-diagram{user-select:none;width:100%;height:auto;display:block}.lp-diagram{touch-action:none}.lp-earth{fill:color-mix(in srgb,var(--lp-accent) 8%,var(--lp-bg));stroke:var(--lp-ink);stroke-width:1.4px}.lp-contours{fill:none;stroke:var(--lp-line);stroke-width:1px}.lp-axis,.lp-equator{stroke:var(--lp-dim);stroke-width:1px;stroke-dasharray:4 4}.lp-star-rays{fill:none;stroke:var(--lp-accent);stroke-width:1.2px;opacity:.55}.lp-arrow-fill,.lp-star,.lp-proof-star{fill:var(--lp-accent)}.lp-label{fill:var(--lp-dim);font-size:10px}.lp-strong{fill:var(--lp-ink);font-weight:600}.lp-radius{stroke:var(--lp-dim);stroke-width:1.2px;stroke-dasharray:3 3}.lp-horizon{stroke:var(--lp-ink);stroke-width:1.5px}.lp-sight{stroke:var(--lp-accent);stroke-width:1.8px}.lp-right-angle{fill:none;stroke:var(--lp-dim);stroke-width:1px}.lp-altitude-arc,.lp-center-angle path,.lp-proof-lat-arc,.lp-proof-alt-arc{fill:none;stroke:var(--lp-accent);stroke-width:2px}.lp-observer,.lp-proof-point{fill:var(--lp-accent)}.lp-observer-hit{fill:#0000;stroke:var(--lp-accent);stroke-width:1.5px;cursor:grab}.lp-observer-hit:active{cursor:grabbing}.lp-accent-label{fill:var(--lp-accent);font-size:11px;font-weight:600}.lp-proof-lat-label{font-size:8px}.lp-proof-equation{font-size:9px}.lp-proof-axis,.lp-proof-ray{stroke:var(--lp-accent);stroke-width:1.5px}.lp-proof-equator{stroke:var(--lp-dim);stroke-width:1.2px}.lp-proof-radius{stroke:var(--lp-dim);stroke-width:1.3px}.lp-proof-drop{stroke:var(--lp-dim);stroke-width:1px;stroke-dasharray:3 3}.lp-proof-horizon{stroke:var(--lp-ink);stroke-width:1.5px}.lp-proof-complement-arc{fill:none;stroke:var(--lp-dim);stroke-width:1.5px}.lp-parallel-marks{fill:none;stroke:var(--lp-accent);stroke-width:1.5px}.lp-controls{border-top:1px solid var(--lp-line);align-items:center;padding-top:12px;display:flex}.lp-controls label{width:100%;color:var(--lp-dim);letter-spacing:.06em;text-transform:uppercase;align-items:center;gap:10px;font-size:11px;display:flex}.lp-slider{accent-color:var(--lp-accent);cursor:pointer;flex:1}.lp-output{min-width:42px;color:var(--lp-accent);font-variant-numeric:tabular-nums;text-align:right}.lp-proof{border-top:1px solid var(--lp-line);color:var(--lp-dim);margin-top:10px;padding-top:9px;font-size:11px;line-height:1.45}.lp-proof summary{cursor:pointer;color:var(--lp-ink);letter-spacing:.06em;text-transform:uppercase;font-size:10px;font-weight:600}.lp-proof p{margin:8px 0 0}.lp-proof-angle{color:var(--lp-accent);font-weight:600}.lp-proof-reference{color:var(--lp-dim);font-weight:700}.lp-proof-polaris{color:var(--lp-ink);font-weight:700}.latitude-polaris{margin-block:1.75rem}@media (width<=620px){.latitude-polaris{padding:12px}.lp-panels{grid-template-columns:1fr}.lp-proof-diagram{border-top:1px solid var(--lp-line);padding-top:12px}}