@font-face{font-family:"EB Garamond";src:url(fonts/EBGaramond.woff2) format("woff2");font-weight:400 800;font-style:normal;font-display:swap}
@font-face{font-family:"EB Garamond";src:url(fonts/EBGaramond-Italic.woff2) format("woff2");font-weight:400 800;font-style:italic;font-display:swap}
@font-face{font-family:"Source Serif 4";src:url(fonts/source-serif-4-normal-latin.woff2) format("woff2");font-weight:200 900;font-style:normal;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Source Serif 4";src:url(fonts/source-serif-4-normal-latin-ext.woff2) format("woff2");font-weight:200 900;font-style:normal;font-display:swap;unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Source Serif 4";src:url(fonts/source-serif-4-italic-latin.woff2) format("woff2");font-weight:200 900;font-style:italic;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Source Serif 4";src:url(fonts/source-serif-4-italic-latin-ext.woff2) format("woff2");font-weight:200 900;font-style:italic;font-display:swap;unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20CF,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Plex Mono";src:url(fonts/IBMPlexMono-Regular.woff2) format("woff2");font-display:swap}

:root{
  --bg:#f3ede2;--ink:#1d1b17;--ink-2:#4d483e;--rule:#dcd2bf;--rule-2:#b3a88f;--link:#8a2d1b;--bar-bg:rgba(243,237,226,.9);
  --wall:#ece4d4;--jamb:#f7f2e8;--jamb-2:#d9ceb9;--opening:#d8cdb8;--graphite:#2f2e2b;--tick:#6f675a;
  --w:#b0432a;--m:#2e5d86;--c0:#a3440f;--c1:#23705e;--c2:#6a4fb0;--c3:#8a6408;--c4:#2e6da6;--c5:#b0184f;--c6:#5d5d22;--c7:#555;--mut:#6c6558;--grid:#ddd3c1;--hi:#9a4712;--card:#fbf8f1;--nodata:rgba(120,110,90,.10);
  --serif:"Source Serif 4",Georgia,serif;--display:"EB Garamond",Garamond,Georgia,serif;--mono:"Plex Mono",ui-monospace,Menlo,monospace;
  color-scheme:light
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#15130f;--ink:#ede6d8;--ink-2:#bdb4a3;--rule:#322e27;--rule-2:#555043;--link:#f0a58c;--bar-bg:rgba(21,19,15,.9);
  --wall:#1d1a15;--jamb:#3a342b;--jamb-2:#2a251f;--opening:#0f0d0a;--graphite:#ece4d2;--tick:#a39a88;
  --w:#f08f73;--m:#8fb9e3;--c0:#f0a060;--c1:#6fd0b4;--c2:#b9a4f2;--c3:#e6c15a;--c4:#8fbfee;--c5:#f38fb5;--c6:#c9c97a;--c7:#bbb;--mut:#a39b8c;--grid:#2d2922;--hi:#f0a060;--card:#1f1c17;--nodata:rgba(200,190,170,.07);color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#15130f;--ink:#ede6d8;--ink-2:#bdb4a3;--rule:#322e27;--rule-2:#555043;--link:#f0a58c;--bar-bg:rgba(21,19,15,.9);
  --wall:#1d1a15;--jamb:#3a342b;--jamb-2:#2a251f;--opening:#0f0d0a;--graphite:#ece4d2;--tick:#a39a88;
  --w:#f08f73;--m:#8fb9e3;--c0:#f0a060;--c1:#6fd0b4;--c2:#b9a4f2;--c3:#e6c15a;--c4:#8fbfee;--c5:#f38fb5;--c6:#c9c97a;--c7:#bbb;--mut:#a39b8c;--grid:#2d2922;--hi:#f0a060;--card:#1f1c17;--nodata:rgba(200,190,170,.07);color-scheme:dark}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:clip}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--ink);font:1.14rem/1.62 var(--serif);font-feature-settings:"onum" 0}
a{color:var(--link)}
:focus-visible{outline:3px solid var(--hi);outline-offset:2px}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:0;background:var(--card);color:var(--ink);padding:.5rem .8rem;z-index:99}
.skip:focus{left:.5rem;top:.5rem}

/* topbar */
.topbar{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:.9rem;height:2.75rem;padding:0 1rem;background:var(--bar-bg);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--rule);font-size:.9rem;font-family:var(--serif)}
.topbar a{color:var(--ink);text-decoration:none}
.topbar .home{font-weight:600;white-space:nowrap}
.topnav{display:flex;gap:1rem;overflow-x:auto;scrollbar-width:none;min-width:0;flex:0 1 auto}
.topnav::-webkit-scrollbar{display:none}
.topnav a{white-space:nowrap;color:var(--ink-2)}
.topnav a:hover{color:var(--ink);text-decoration:underline}
.spacer{flex:1}
.chip{display:inline-flex;align-items:center;min-height:2rem;border:1px solid var(--rule-2);border-radius:99px;padding:.1rem .7rem;font-size:.82rem;white-space:nowrap}
.icon-btn{display:inline-grid;place-items:center;width:2.75rem;height:2.75rem;margin-right:-.6rem;background:none;border:0;color:var(--ink);cursor:pointer;border-radius:50%}
.icon-btn svg[hidden]{display:none}
@media (max-width:720px){.topnav{display:none}.topbar{gap:.6rem}}

/* rail */
.rail{position:fixed;right:.9rem;top:50%;transform:translateY(-50%);z-index:30;display:flex;flex-direction:column;gap:.55rem}
.rail a{display:flex;align-items:center;justify-content:flex-end;gap:.5rem;text-decoration:none;color:var(--ink-2);font-size:.8rem;min-height:24px}
.rail a span{opacity:0;transform:translateX(6px);transition:opacity .2s,transform .2s;background:var(--bg);color:var(--ink);padding:.1rem .5rem;border-radius:4px;white-space:nowrap;border:1px solid var(--rule)}
.rail a:hover span,.rail a:focus-visible span{opacity:1;transform:none}
.rail i{width:8px;height:8px;border-radius:50%;border:1.5px solid var(--ink-2);flex:none;transition:background .2s,transform .2s}
.rail a[aria-current="true"] i{background:var(--hi);border-color:var(--hi);transform:scale(1.35)}
@media (max-width:1100px){.rail{display:none}}

main{display:block}
article{max-width:1180px;margin:0 auto;padding:0 1.25rem 3rem}
h1,h2,h3{font-family:var(--display);font-weight:600;line-height:1.1;letter-spacing:-.005em}
h2{font-size:clamp(1.7rem,3.4vw,2.4rem);margin:0 0 .8rem}
h3{font-size:1.35rem;margin:1.8rem 0 .4rem}
.anchor{color:inherit;text-decoration:none}
.anchor:hover{text-decoration:underline;text-decoration-thickness:1px}
.block{max-width:44rem;margin:0 auto;padding:3.2rem 0 1rem;scroll-margin-top:3.2rem}
.block.wide{max-width:none}
.block.wide>p,.block.wide>h2{max-width:44rem;margin-left:auto;margin-right:auto}
.small{font-size:.9rem;color:var(--ink-2)}
.btn{font:inherit;font-size:.95rem;min-height:44px;padding:.4rem 1rem;border-radius:99px;border:1.5px solid var(--ink);background:var(--card);color:var(--ink);cursor:pointer}
.btn.ghost{border-color:var(--rule-2)}
.btn:hover{background:var(--ink);color:var(--bg)}

/* hero */
.hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);grid-template-areas:"text door" "form door";grid-template-rows:auto 1fr;column-gap:2.5rem;row-gap:1.2rem;align-items:start;padding-top:1.5rem;scroll-margin-top:3rem}
.hero-text{grid-area:text}.door{grid-area:door;position:sticky;top:3.2rem}.family{grid-area:form}
.kicker{font-family:var(--mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);margin:1rem 0 .6rem}
.hero h1{font-size:clamp(2.6rem,6vw,4.6rem);margin:0 0 1rem}
.deck{font-size:1.22rem;color:var(--ink-2);max-width:30rem}
.door svg{width:100%;height:auto;display:block;max-height:calc(100svh - 4.2rem);border-radius:6px}
.wall{fill:var(--wall)}.opening{fill:var(--opening)}
.jamb-edge{stroke:var(--jamb-2);stroke-width:2}
.tick{stroke:var(--tick);stroke-width:1}
.tickl{fill:var(--tick);font:13px var(--mono)}
.pencil{stroke:var(--graphite);stroke-width:2.4;stroke-linecap:round}
.mark.faint .pencil{stroke-dasharray:6 5;opacity:.7}
.mark.faint .smudge{opacity:.65}
.mark.you .pencil{stroke:var(--hi);stroke-width:3.2}
.leader{stroke:var(--mut);stroke-width:1;fill:none}
.ml{font:600 17px var(--serif);fill:var(--ink)}
.ml .yr{font-weight:400;fill:var(--ink-2)}
.mv{font:15px var(--mono);fill:var(--ink-2)}
.side{font:italic 600 18px var(--serif)}.side.w{fill:var(--w)}.side.m{fill:var(--m)}
.mark.faint .ml,.mark.faint .mv{opacity:.8}

/* family editor */
.family{background:var(--card);border:1px solid var(--rule);border-radius:10px;padding:.9rem 1rem}
.family[hidden]{display:none}
.family ol{list-style:none;margin:0;padding:0;display:grid;gap:.5rem}
.family li{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr) 44px;gap:.5rem;align-items:center}
.family select,.family input{font:inherit;font-size:1rem;min-height:44px;padding:.3rem .5rem;border:1px solid var(--rule-2);border-radius:6px;background:var(--bg);color:var(--ink);width:100%}
.family .del{width:44px;height:44px;border:0;background:none;color:var(--ink-2);font-size:1.4rem;cursor:pointer;border-radius:50%}
.fam-actions{display:flex;flex-wrap:wrap;gap:.8rem;align-items:end;justify-content:space-between;margin-top:.8rem}
.you{display:grid;gap:.2rem;font-size:.9rem;color:var(--ink-2)}
.you input{max-width:9rem}
.fam-note{font-size:.92rem;color:var(--ink-2);margin:.7rem 0 0}
.fam-note:empty{display:none}
.share-line{margin:.6rem 0 0;font-size:.9rem;color:var(--ink-2)}

/* class */
.lead-in{font-size:1.1rem}
.ages{display:flex;flex-wrap:wrap;gap:.4rem;justify-content:center;margin:1.2rem auto}
.ages[hidden]{display:none}
.ages button,.seg button{font:600 1.05rem var(--serif);min-width:48px;min-height:48px;border-radius:99px;border:1.5px solid var(--rule-2);background:var(--card);color:var(--ink);cursor:pointer}
.ages button[aria-checked="true"],.seg button[aria-checked="true"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.class-stage{max-width:1000px;margin:0 auto}
@media (min-width:1100px){
  .klass{display:grid;grid-template-columns:minmax(0,26rem) minmax(0,1fr);gap:2.5rem;align-items:center;min-height:calc(100svh - 3rem)}
  .klass .k-text>*{max-width:none}
  .klass .ages{justify-content:flex-start}
  .klass .verdict{text-align:left;font-size:1.6rem}
  .class-stage{width:100%;max-width:min(100%,calc((100svh - 4rem) * 1.87))}
}
.class-stage svg{width:100%;height:auto;display:block}
.floor{stroke:var(--ink);stroke-width:2}
.grid{stroke:var(--grid);stroke-width:1}
.ax{fill:var(--mut);font:13px var(--mono)}
.pp .ci{fill:currentColor;opacity:.13}
.pp.w{color:var(--w)}.pp.m{color:var(--m)}
.pp.now path,.pp.now circle{fill:currentColor}
.pp.old path,.pp.old circle{fill:none;stroke:currentColor;stroke-width:2.5;stroke-dasharray:5 4}
.pp .hl{stroke:currentColor;stroke-width:2}
.pv{font:700 25px var(--mono);fill:currentColor}
.pl{font:600 19px var(--serif);fill:var(--ink-2)}
.pp path,.pp circle,.pp .hl,.pp .pv,.pp .ci{transition:transform .5s ease}
.verdict{font-family:var(--display);font-size:clamp(1.35rem,2.6vw,1.9rem);line-height:1.25;text-align:center;max-width:48rem!important;margin:.4rem auto .6rem}

/* century + world */
.fig{margin:1.6rem auto;max-width:1000px}
.fig svg{width:100%;height:auto;display:block}
figcaption{font-size:.88rem;color:var(--ink-2);margin-top:.4rem}
.band{opacity:.16}.band.m{fill:var(--m)}.band.w{fill:var(--w)}
.ln{fill:none;stroke-width:2.6}.ln.m{stroke:var(--m)}.ln.w{stroke:var(--w)}
.lab{font:600 15px var(--serif)}.lab.m{fill:var(--m)}.lab.w{fill:var(--w)}
.nodata{fill:var(--nodata)}
.note{fill:var(--mut);font:italic 14px var(--serif)}
.pk{fill:var(--m)}
.world-ctl{display:flex;flex-wrap:wrap;gap:.8rem;align-items:center;justify-content:center;max-width:1000px;margin:1rem auto}
.world-ctl[hidden]{display:none}
.seg{display:flex;gap:.3rem}
.seg button{padding:0 1rem;font-weight:500}
.find input{font:inherit;min-height:44px;padding:.3rem .8rem;border:1.5px solid var(--rule-2);border-radius:99px;background:var(--card);color:var(--ink);width:min(22rem,80vw)}
.picked{display:flex;flex-wrap:wrap;gap:.4rem;justify-content:center;width:100%}
.pick{display:inline-flex;align-items:center;gap:.3rem;min-height:36px;border-radius:99px;border:1.5px solid currentColor;padding:0 .3rem 0 .8rem;background:var(--card);font-size:.92rem}
.pick button{border:0;background:none;color:inherit;font-size:1.1rem;cursor:pointer;min-width:32px;min-height:32px}
.wl{fill:none;stroke-width:2.2}
.wb{opacity:.12}
.wlab{font:600 16px var(--serif)}
.tablewrap{max-width:1000px;margin:1.5rem auto 0;overflow-x:auto}
.wt{border-collapse:collapse;width:100%;font-size:.95rem}
.wt caption{text-align:left;font-family:var(--display);font-size:1.25rem;font-weight:600;padding-bottom:.5rem}
.wt th,.wt td{padding:.35rem .6rem;border-bottom:1px solid var(--rule);text-align:right;white-space:nowrap}
.wt th[scope=row],.wt thead th:nth-child(2){text-align:left;white-space:normal}
.wt thead th{font-weight:600;color:var(--ink-2);font-size:.85rem}
.wt td{font-family:var(--mono);font-size:.88rem}
.wt tr.me{background:color-mix(in srgb,var(--hi) 14%,transparent)}
.wt tr.more-hidden{display:none}
.more-line{text-align:center}
.more-line [hidden]{display:none}

/* ending, sources, footer */
.end p{font-size:1.2rem}
.method{font-size:.95rem;color:var(--ink-2)}
.srcs{font-size:.88rem;color:var(--ink-2);padding-left:1.1rem}
.srcs li{margin:.35rem 0}
.rel-h{font-size:1.1rem}
.rel{padding-left:1.1rem}
.foot{border-top:1px solid var(--rule);text-align:center;font-size:.9rem;color:var(--ink-2);padding:1.5rem 1rem 2.5rem}
.foot a{color:inherit}
.nf main{max-width:36rem;margin:15vh auto;padding:0 1.2rem}

@media (max-width:900px){
  .hero{grid-template-columns:minmax(0,1fr);grid-template-areas:"text" "door" "form";row-gap:1rem;padding-top:1rem}
  .door{position:static}
  .hero h1{font-size:clamp(2.2rem,10vw,3rem)}
  .deck{font-size:1.08rem}
  .door svg{max-height:none}
  body{font-size:1.05rem}
}
@media (max-width:520px){
  article{padding:0 1rem 2rem}
  .family li{grid-template-columns:minmax(0,1.2fr) minmax(0,1fr) 44px}
  .ml{font-size:26px}.mv{font-size:22px}.tickl{font-size:18px}
  .pv{font-size:24px}.pl{font-size:18px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}