:root{
  --bg:#f5efe2;--bg2:#ebe2cf;--card:#fbf7ee;--ink:#17192a;--mut:#4d5266;--line:#d3c7ae;--line-soft:#e2d8c3;
  --acc:#8a4a12;--acc2:#1f3a6e;--fg:var(--ink);
  --vi:#2a5bb8;--or:#8a4a12;--th:#7a2e14;--sea:#e6e0d1;--land:#f7f3ea;--landline:#c9bfa8;--river:#9fb3cf;
  --t:#8a4a12;--v:#8a2f6b;--e:#1f5e8a;--a:#5c5f6e;--band:rgba(23,25,42,.08);
  --serif:Georgia,'Iowan Old Style','Palatino Linotype',Palatino,'Times New Roman',serif;
  --sans:system-ui,-apple-system,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  --bar:44px;--col:700px;
}
:root[data-theme="dark"]{
  --bg:#0b1020;--bg2:#121a30;--card:#10172b;--ink:#ece6d6;--mut:#a9b0c4;--line:#2b3554;--line-soft:#1c2540;
  --acc:#e8b75a;--acc2:#a9c1f2;--vi:#8fb2ff;--or:#f0b85a;--th:#f08a63;--sea:#0e1528;--land:#18213a;--landline:#2e3a5c;--river:#3f5a86;
  --t:#e8b75a;--v:#e79ad0;--e:#8fc3ee;--a:#a3a7b8;--band:rgba(236,230,214,.1);
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0b1020;--bg2:#121a30;--card:#10172b;--ink:#ece6d6;--mut:#a9b0c4;--line:#2b3554;--line-soft:#1c2540;
  --acc:#e8b75a;--acc2:#a9c1f2;--vi:#8fb2ff;--or:#f0b85a;--th:#f08a63;--sea:#0e1528;--land:#18213a;--landline:#2e3a5c;--river:#3f5a86;
  --t:#e8b75a;--v:#e79ad0;--e:#8fc3ee;--a:#a3a7b8;--band:rgba(236,230,214,.1);
}}
[hidden]{display:none!important}
svg[hidden]{display:none}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;background:var(--bg);color:var(--ink);font:1.08rem/1.68 var(--serif);overflow-wrap:break-word}
a{color:var(--acc2);text-underline-offset:.18em}
a:hover{color:var(--acc)}
:focus-visible{outline:2px solid var(--acc);outline-offset:2px;border-radius:3px}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:var(--bg);padding:.5rem .8rem;z-index:100}
.skip:focus{left:8px;top:8px}
.vh{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* topbar: slim, takes the night colours over the hero */
.topbar{position:sticky;top:0;z-index:50;background:var(--bg)!important;height:calc(var(--bar) + var(--browser-safe-top,env(safe-area-inset-top)));padding:var(--browser-safe-top,env(safe-area-inset-top)) max(16px,env(safe-area-inset-right)) 0 max(16px,env(safe-area-inset-left));display:flex;align-items:center;gap:.9rem;background:color-mix(in srgb,var(--bg) 94%,transparent);border-bottom:1px solid var(--line-soft);font:600 .84rem/1 var(--sans)}
.topbar .home{color:var(--ink);text-decoration:none;white-space:nowrap}
.topnav{display:flex;gap:1rem;overflow-x:auto;scrollbar-width:none;min-width:0}
.topnav::-webkit-scrollbar{display:none}
.topnav a{color:var(--mut);text-decoration:none;white-space:nowrap;padding:.45rem 0;border-bottom:2px solid transparent}
.topnav a[aria-current="true"]{color:var(--ink);border-bottom-color:var(--acc)}
.spacer{flex:1}
.chip{font:600 .8rem/1 var(--sans);color:var(--ink);text-decoration:none;border:1px solid var(--line);border-radius:99px;padding:.42rem .7rem;white-space:nowrap}
.chip:hover{border-color:var(--acc);color:var(--acc)}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:transparent;color:var(--ink);cursor:pointer;flex:none}
.icon-btn:hover{border-color:var(--acc);color:var(--acc)}
@media (max-width:520px){.topnav{display:none}}
section,.hero{scroll-margin-top:calc(var(--bar) + var(--browser-safe-top,env(safe-area-inset-top)) + 12px)}

/* hero: the computed sky, text over a scrim */
.hero{position:relative;background:#060a1c;color:#f3ecdc;overflow:hidden;min-height:min(92svh,860px);display:flex;flex-direction:column;justify-content:flex-end}
.hero picture,.hero-img{position:absolute;inset:0;width:100%;height:100%}
.hero-img{object-fit:cover;object-position:62% 30%}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,28,0) 35%,rgba(6,10,28,.55) 62%,rgba(6,10,28,.92) 100%),linear-gradient(90deg,rgba(6,10,28,.75) 0,rgba(6,10,28,.25) 48%,rgba(6,10,28,0) 70%);pointer-events:none}
.hero-text{position:relative;z-index:1;max-width:760px;padding:0 max(16px,4vw) 1.2rem;margin-top:40svh}
.eyebrow{font:600 .78rem/1.2 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:#e8b75a;margin:0 0 .7rem}
h1{font-weight:400;font-size:clamp(2rem,4.6vw,3.6rem);line-height:1.08;margin:0 0 1rem;letter-spacing:-.01em;text-shadow:0 2px 18px rgba(0,0,0,.6)}
.deck{font-size:clamp(1.05rem,1.6vw,1.24rem);line-height:1.55;color:#e4dccb;margin:0 0 .9rem;text-shadow:0 1px 10px rgba(0,0,0,.7)}
.byline{font:500 .8rem/1.3 var(--sans);color:#aab3d6;margin:0}
.hero-cap{position:relative;z-index:1;margin:0;padding:.6rem max(16px,4vw) 1rem;font:italic .82rem/1.45 var(--serif);color:#aab3d6;max-width:1000px}

/* layout */
.layout{position:relative}
main{display:block;outline:none}
.col,.s>.col{max-width:var(--col);margin-left:auto;margin-right:auto;padding-left:16px;padding-right:16px}
section.col{max-width:calc(var(--col) + 32px)}
.s{padding-top:3.4rem;padding-bottom:1rem}
h2{font-weight:400;font-size:clamp(1.5rem,2.6vw,2.05rem);line-height:1.2;margin:0 0 1rem;letter-spacing:-.005em}
h3{font:600 1rem/1.3 var(--sans);margin:2rem 0 .6rem}
.anchor{font:400 .8em var(--sans);color:var(--line);text-decoration:none;margin-left:.4rem;opacity:0}
h2:hover .anchor,.anchor:focus-visible{opacity:1}
p{margin:0 0 1.05rem}
sup.c{font:600 .66em var(--sans);margin-left:1px}
sup.c a{text-decoration:none;color:var(--mut)}
sup.c+sup.c::before{content:",";color:var(--mut)}
.note,.src,.cap{font:.86rem/1.5 var(--sans);color:var(--mut)}
figure{margin:1.6rem 0}
figure.wide{max-width:900px;margin-left:auto;margin-right:auto}

/* the tool */
.tool{max-width:1220px;margin:1.4rem auto 0;padding:0 16px;display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);grid-template-areas:'stage place' 'stage map' 'clocks clocks' 'note note';gap:1.2rem 1.4rem;align-items:start}
.stagewrap{grid-area:stage}.placebox{grid-area:place;display:flex;flex-direction:column;gap:.6rem}.mapwrap{grid-area:map}.clocks{grid-area:clocks}.tool>.note{grid-area:note}
.pick{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem .7rem;font:600 .86rem/1.2 var(--sans)}
.coords summary{font:600 .82rem var(--sans);color:var(--acc2);cursor:pointer;min-height:32px;display:flex;align-items:center}
.coords form{display:flex;flex-wrap:wrap;gap:.5rem;align-items:end;font:.82rem var(--sans);margin-top:.4rem}
.coords input{display:block;width:7.5rem;min-height:44px;font:1rem var(--serif);padding:.3rem .5rem;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--ink)}
.placebox .result{font-size:1.02rem;margin:0}
.stagewrap{position:relative;border-radius:14px;overflow:hidden;background:#060a1c;border:1px solid rgba(255,255,255,.1);box-shadow:0 18px 50px -20px rgba(0,0,0,.45)}
.sky{display:block;width:100%;height:clamp(300px,42vw,560px)}
.stage-ui{position:absolute;left:0;right:0;bottom:0;display:flex;gap:.8rem;align-items:center;padding:.7rem .9rem;background:linear-gradient(0deg,rgba(3,5,12,.9),rgba(3,5,12,0));color:#e9e2d0;font:600 .82rem/1.2 var(--sans)}
.play{flex:none;min-height:40px;padding:0 .95rem;border-radius:99px;border:1px solid rgba(232,183,90,.7);background:rgba(6,10,28,.6);color:#f3e1b8;font:600 .84rem/1 var(--sans);cursor:pointer}
.play:hover{background:rgba(232,183,90,.18)}
.tslider{flex:1;display:grid;grid-template-columns:1fr auto;gap:.15rem .8rem;align-items:center;min-width:0}
.tslider label{grid-column:1/-1;color:#aab3d6;font-weight:500}
.tslider input{width:100%;accent-color:#e8b75a;min-height:28px}
.tslider output{font:400 1.15rem/1 var(--serif);color:#f6efe0;white-space:nowrap}
.side{display:flex;flex-direction:column;gap:.7rem;min-width:0}
.placebox select{font:1rem var(--serif);padding:.45rem .6rem;border-radius:8px;border:1px solid var(--line);background:var(--card);color:var(--ink);min-height:44px;max-width:100%}
.reset{font:600 .82rem/1 var(--sans);min-height:40px;padding:0 .8rem;border-radius:99px;border:1px solid var(--line);background:transparent;color:var(--acc2);cursor:pointer}
.reset:hover{border-color:var(--acc);color:var(--acc)}
.mapwrap{background:var(--card);border:1px solid var(--line-soft);border-radius:12px;padding:.5rem}
.map{display:block;width:100%;height:auto;cursor:crosshair;border-radius:8px;touch-action:manipulation}
.map .sea{fill:var(--sea)}
.map .land path{fill:var(--land);stroke:var(--landline);stroke-width:.6;stroke-linejoin:round}
.map .river path{fill:none;stroke:var(--river);stroke-width:.8}
.map .grat{stroke:var(--landline);stroke-width:.4;stroke-dasharray:2 4}
.map .mer{stroke-width:1.8}
.map .mer.vi{stroke:var(--vi)}.map .mer.or{stroke:var(--or)}.map .mer.th{stroke:var(--th);stroke-dasharray:6 5;stroke-width:1.6}
.map .sel-lab{font:700 15px var(--sans);fill:var(--ink);paint-order:stroke;stroke:var(--land);stroke-width:4px}
.map .merlab{font:700 20px var(--sans);paint-order:stroke;stroke:var(--sea);stroke-width:3px}
.map .merlab.vi{fill:var(--vi)}.map .merlab.or{fill:var(--or)}.map .merlab.th{fill:var(--th)}
.map .city{fill:var(--mut);stroke:var(--card);stroke-width:1}
.map .city.on{fill:var(--acc)}
.map .sel circle{fill:none;stroke:var(--acc);stroke-width:2}
.map .sel .dot{fill:var(--acc);stroke:none}
.mapwrap .cap{margin:.5rem .2rem .2rem}
.offset{font:600 .86rem/1.4 var(--sans);margin:.3rem .2rem 0;color:var(--ink)}
.clocks{overflow-x:auto}
.clocks table{width:100%;border-collapse:collapse;font:.88rem/1.35 var(--sans);min-width:620px}
.clocks caption{text-align:left;font:600 .84rem var(--sans);color:var(--mut);padding:0 0 .4rem}
.clocks th,.clocks td{padding:.45rem .55rem;border-bottom:1px solid var(--line-soft);text-align:left;vertical-align:top}
.clocks thead th{font-weight:600;color:var(--mut)}
.clocks thead th.now{color:var(--acc)}
.clocks tbody th{font-weight:600;width:28%}
.clocks td{font:1.02rem var(--serif);font-variant-numeric:tabular-nums}
.clocks .r-sky td{font-weight:700}
.clocks td.low{color:var(--mut);text-decoration:line-through}
.clocks td.na{color:var(--line)}
.result{line-height:1.5}
.resrow{display:flex;flex-wrap:wrap;align-items:center;gap:.3rem .8rem}
.tool>.note{max-width:900px}
@media (max-width:860px){
  .tool{grid-template-columns:1fr;grid-template-areas:'place' 'stage' 'map' 'clocks' 'note'}
  .sky{height:min(46svh,420px)}
  .stage-ui{flex-wrap:wrap}
}

/* share row */
.share{display:flex;flex-wrap:wrap;align-items:center;gap:.45rem;margin:.6rem 0}
.share .lab{font:600 .82rem var(--sans);color:var(--mut);margin-right:.2rem}
.share a,.share button{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;border:1px solid var(--line-soft);background:transparent;color:var(--ink);cursor:pointer;padding:0}
.share a:hover,.share button:hover,.share a:focus-visible,.share button:focus-visible{border-color:var(--acc);color:var(--acc)}
@media (pointer:coarse){.share a,.share button{width:44px;height:44px}}
.share .status{font:.82rem var(--sans);color:var(--mut)}

/* evidence chart */
.legend{display:flex;flex-wrap:wrap;gap:.4rem 1.1rem;font:.82rem var(--sans);color:var(--mut);margin-bottom:.4rem}
.legend i{display:inline-block;width:18px;height:10px;border-radius:5px;margin-right:.4rem;vertical-align:-1px}
.lg-t{background:var(--t)}.lg-v{background:var(--v)}.lg-e{background:var(--e)}.lg-a{background:var(--a)}.lg-b{background:var(--band);border:1px solid var(--line)}
.chart{display:block;width:100%;height:auto;font-family:var(--sans)}
.chart .ev{font:600 14px var(--sans);fill:var(--ink)}
.chart .mo{font:13.5px var(--sans);fill:var(--mut)}
.chart .rowl{stroke:var(--line-soft)}
.chart .band{fill:var(--band)}
.chart .zero{stroke:var(--ink);stroke-width:1}
.chart .tick{stroke:var(--mut)}.chart .tk{font:11px var(--sans);fill:var(--mut)}.chart .ax{font:12px var(--sans);fill:var(--mut)}
.chart .mk-t{fill:var(--t)}.chart .mk-v{fill:var(--v)}.chart .mk-e{fill:var(--e)}.chart .mk-a{fill:var(--a)}
.chart .vl{font:600 13px var(--sans)}
.chart .stem{stroke-width:1;stroke-dasharray:2 3}.chart .stem.mk-t{stroke:var(--t)}.chart .stem.mk-v{stroke:var(--v)}.chart .stem.mk-e{stroke:var(--e)}.chart .stem.mk-a{stroke:var(--a)}
.chart text.mk-t{fill:var(--t)}.chart text.mk-v{fill:var(--v)}.chart text.mk-e{fill:var(--e)}.chart text.mk-a{fill:var(--a)}
.tablewrap{overflow-x:auto;margin:1.2rem 0 .4rem}
.tablewrap table{border-collapse:collapse;width:100%;font:.86rem/1.4 var(--sans);min-width:560px}
.tablewrap th,.tablewrap td{padding:.4rem .5rem;border-bottom:1px solid var(--line-soft);text-align:left}
.tablewrap td:nth-child(n+3){font-variant-numeric:tabular-nums;white-space:nowrap}

/* star lines chart: always a night chart */
.linesfig{display:grid;grid-template-columns:330fr 400fr;gap:.8rem;align-items:start}
@media (max-width:600px){.linesfig{grid-template-columns:1fr}}
.lines{display:block;width:100%;height:auto;border-radius:10px}
.lines .zoombox{fill:none;stroke:#f3c9a6;stroke-width:1.2}
.lines .gl.g2{stroke:#9fc0ff}
.lines .lsky{fill:#0a1128}
.lines .lcons{fill:none;stroke:#5d6ca3;stroke-opacity:.5;stroke-width:1}
.lines .lstar{fill:#f1ede2}
.lines .gl{fill:none;stroke:#e8b75a;stroke-width:1.4;stroke-dasharray:2 5;stroke-linecap:round}
.lines .mpath{fill:none;stroke:#b4532a;stroke-width:1.4;stroke-opacity:.8}
.lines .lmoon{fill:#b4532a;stroke:#f3c9a6;stroke-width:1}
.lines .llab,.lines .lname,.lines .lpath{font:italic 14px var(--serif);fill:#c9cfe6}
.lines .lname.g2t{fill:#9fc0ff}
.lines .llab{font-style:normal;font:600 13px var(--sans);fill:#f3c9a6}

/* timeline and figures */
.timeline{list-style:none;padding:0;margin:0 0 1rem;border-left:2px solid var(--line);}
.timeline li{position:relative;padding:0 0 1.1rem 1.2rem}
.timeline li::before{content:"";position:absolute;left:-6px;top:.55rem;width:10px;height:10px;border-radius:50%;background:var(--acc)}
.timeline b{display:block;font:600 .86rem/1.3 var(--sans);color:var(--acc);margin-bottom:.15rem}
.figs{display:grid;grid-template-columns:1.25fr 1fr;gap:1.2rem;margin:1.4rem 0}
.figs figure{margin:0}
.figs img{display:block;width:100%;height:auto;border-radius:6px;border:1px solid var(--line-soft);background:var(--bg2)}
figcaption{font:.82rem/1.45 var(--sans);color:var(--mut);margin-top:.45rem}
@media (max-width:640px){.figs{grid-template-columns:1fr}}
.unk,.rel,.next{padding-left:1.2rem}
.unk li,.rel li,.next li{margin-bottom:.55rem}
.refs{font:.9rem/1.5 var(--sans);padding-left:1.4rem}
.refs li{margin-bottom:.6rem}

/* rail (templates/reading-rail.css), dots in the gutter */
.rail{display:none}
@media(min-width:1320px){
.rail{--gut:.5rem;display:flex;flex-direction:column;position:fixed;top:50%;left:calc(50% + 610px + var(--gut));transform:translateY(-50%);z-index:40;margin:0;padding:.4rem 0;max-height:calc(100vh - 7rem)}
.rail::before{content:"";position:absolute;left:calc(.875rem - .5px);top:1.1rem;bottom:1.1rem;width:1px;background:var(--line)}
.rail-dot{position:relative;display:flex;align-items:center;justify-content:center;width:1.75rem;height:1.75rem;text-decoration:none;border-radius:50%}
.rail-dot .dot{width:7px;height:7px;border-radius:50%;background:var(--mut);box-shadow:0 0 0 3px var(--bg);transition:transform .2s,background .2s;flex:none}
.rail-dot:hover .dot,.rail-dot:focus-visible .dot{background:var(--acc);transform:scale(1.25)}
.rail-dot[aria-current=true] .dot{background:var(--acc);transform:scale(1.45)}
.rail-label{position:absolute;right:calc(100% + .3rem);top:50%;transform:translate(6px,-50%);padding:.22rem .65rem;border:1px solid var(--line);border-radius:.5rem;background:var(--bg);color:var(--fg);font:600 .8rem/1.3 var(--sans);white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .15s,transform .15s}
.rail-dot:hover .rail-label,.rail-dot:focus-visible .rail-label{opacity:1;transform:translate(0,-50%)}
}
@media(min-width:1480px){
.rail-label{right:auto;left:calc(100% + .15rem);padding:.1rem .2rem;border-color:transparent;background:transparent;color:var(--mut);transform:translate(-4px,-50%)}
.rail-dot:hover .rail-label,.rail-dot:focus-visible .rail-label{color:var(--acc)}
}
@media print{.rail,.topbar,.stage-ui,.share{display:none}}

footer{border-top:1px solid var(--line-soft);margin-top:3rem;padding:1.4rem 0 3rem;font:.86rem/1.6 var(--sans);color:var(--mut)}
footer .col{display:flex;flex-wrap:wrap;gap:.4rem 1.2rem}

/* chrome over the night hero: night colours, rail waits until the reader is past the opening */
html.in-hero .topbar{background:rgba(6,10,28,.88)!important;border-bottom-color:transparent;color:#efe7d5}
html.in-hero .topbar .home,html.in-hero .topnav a,html.in-hero .chip,html.in-hero .icon-btn{color:#e7dfcd}
html.in-hero .chip,html.in-hero .icon-btn{border-color:rgba(231,223,205,.35)}
.rail{transition:opacity .4s}
html.in-hero .rail{opacity:0;pointer-events:none}
.hero{margin-top:calc(-1 * (var(--bar) + var(--browser-safe-top,env(safe-area-inset-top))))}


@media (max-width:600px){
  .tablewrap table{min-width:0}
  .tablewrap th,.tablewrap td{padding:.35rem .3rem;font-size:.8rem}
  .clocks thead th{font-size:.74rem;line-height:1.25}
  .tslider output{font-size:1rem}
  .stage-ui{flex-direction:column;align-items:stretch;gap:.4rem}
  .stage-ui .play{align-self:flex-start}
}
.hero-img{object-position:62% 30%}
@media (max-width:700px){.hero-img{object-position:50% 0}.hero-text{margin-top:52svh}}

.slipfig{display:block;width:100%;height:auto;font-family:var(--sans)}
.slipfig .sax{stroke:var(--ink)}.slipfig .stk{stroke:var(--mut)}.slipfig .stx{font:12px var(--sans);fill:var(--mut)}
.slipfig .sband{fill:var(--th);fill-opacity:.12}
.slipfig .sm{stroke-width:2}.slipfig .sm.vi{stroke:var(--vi)}.slipfig .sm.or{stroke:var(--or)}.slipfig .sm.th{stroke:var(--th);stroke-dasharray:5 4}
.slipfig .sl{font:600 13px var(--sans);fill:var(--ink)}.slipfig .sl.vi{fill:var(--vi)}.slipfig .sl.or{fill:var(--or)}.slipfig .sl.th{fill:var(--th)}
.slipfig .sbl{fill:var(--ink)}.slipfig .sax-l{font:12px var(--sans);fill:var(--mut)}

html.in-hero :focus-visible,.stagewrap :focus-visible,.hero :focus-visible{outline-color:#e8b75a}
.cta{margin:.9rem 0 0}.cta a{display:inline-flex;align-items:center;min-height:44px;padding:0 1rem;border-radius:99px;border:1px solid rgba(232,183,90,.75);color:#f3e1b8;text-decoration:none;font:600 .9rem var(--sans);background:rgba(6,10,28,.45)}
.cta a:hover{background:rgba(232,183,90,.18);color:#fff}
@media (pointer:coarse){.icon-btn{width:44px;height:44px}.chip{min-height:44px;display:inline-flex;align-items:center}.play,.reset{min-height:44px}.tslider input{min-height:44px}}
.scrollfig{overflow-x:auto}
@media (max-width:600px){
  .scrollfig .chart,.scrollfig .slipfig{min-width:640px}
  .hero-text{margin-top:30svh}
  .clocks table{min-width:620px}
}