@font-face{font-family:"EB Garamond";font-style:normal;font-weight:400 800;font-display:swap;src:url("fonts/ebgaramond-latin.woff2") format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"EB Garamond";font-style:normal;font-weight:400 800;font-display:swap;src:url("fonts/ebgaramond-latin-ext.woff2") format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"EB Garamond";font-style:italic;font-weight:400 800;font-display:swap;src:url("fonts/ebgaramond-italic-latin.woff2") format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"EB Garamond";font-style:italic;font-weight:400 800;font-display:swap;src:url("fonts/ebgaramond-italic-latin-ext.woff2") format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:300 700;font-display:swap;src:url("fonts/IBMPlexSans-latin.woff2") format("woff2");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:"IBM Plex Sans";font-style:normal;font-weight:300 700;font-display:swap;src:url("fonts/IBMPlexSans-latin-ext.woff2") format("woff2");unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}

/* A parish register by day, lamplight by night. The red thread is blood kinship, the blue one marriage. */
:root{
  color-scheme:light;
  --bg:#f5f0e6;--surface:#fbf8f2;--surface-2:#ebe4d6;
  --ink:#1f1a15;--ink-2:#3b342c;--muted:#4f473e;--line:#cfc5b3;--line-soft:#e3dbcc;
  --thread:#a8261c;--thread-text:#8e1f17;--thread-soft:#f3d9d3;--thread-ink:#fff;
  --bond:#2c4b8e;--bond-soft:#dbe3f3;--bond-ink:#fff;
  --wire:#b8ad99;--pill:#fffdf8;--pill-line:#cdbfa8;
  --ok:#2f5d34;--warn:#7a4a00;--stop:#a8261c;
  --serif:"EB Garamond","Iowan Old Style",Georgia,serif;--sans:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --topbar:50px;--row:84px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  color-scheme:dark;
  --bg:#14110e;--surface:#1c1814;--surface-2:#28221c;
  --ink:#f2ece2;--ink-2:#dcd4c7;--muted:#b6ac9e;--line:#3a332b;--line-soft:#29231d;
  --thread:#f0806b;--thread-text:#f59a87;--thread-soft:#3d211c;--thread-ink:#1a0d0a;
  --bond:#93adf0;--bond-soft:#1c2540;--bond-ink:#0d1120;
  --wire:#5a5045;--pill:#1f1b16;--pill-line:#4a4036;
  --ok:#9fd3a4;--warn:#f1c46b;--stop:#f0806b;
}}
:root[data-theme="dark"]{
  color-scheme:dark;
  --bg:#14110e;--surface:#1c1814;--surface-2:#28221c;
  --ink:#f2ece2;--ink-2:#dcd4c7;--muted:#b6ac9e;--line:#3a332b;--line-soft:#29231d;
  --thread:#f0806b;--thread-text:#f59a87;--thread-soft:#3d211c;--thread-ink:#1a0d0a;
  --bond:#93adf0;--bond-soft:#1c2540;--bond-ink:#0d1120;
  --wire:#5a5045;--pill:#1f1b16;--pill-line:#4a4036;
  --ok:#9fd3a4;--warn:#f1c46b;--stop:#f0806b;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
svg[hidden]{display:none}
html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--topbar) + 14px)}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:clip}
a{color:inherit;text-decoration-color:var(--thread);text-underline-offset:.18em;text-decoration-thickness:1.5px}
a:hover{color:var(--thread-text)}
:focus-visible{outline:2.5px solid var(--bond);outline-offset:3px;border-radius:4px}
.skip-link{position:absolute;left:12px;top:-60px;z-index:100;background:var(--ink);color:var(--bg);padding:10px 14px;border-radius:8px;font-weight:600}
.skip-link:focus{top:10px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
h1,h2,h3{font-family:var(--serif);font-weight:600;text-wrap:balance;line-height:1.08}
.anchor{opacity:0;margin-left:.3em;text-decoration:none;color:var(--muted);font-family:var(--sans);font-size:.5em;vertical-align:middle;display:inline-block;min-width:1.4em}
h2:hover .anchor,.anchor:focus-visible{opacity:1}
@media (pointer:coarse){.anchor{opacity:.55}}

/* ---------- top bar, progress thread, rail */
.topbar{position:fixed;inset:0 0 auto 0;height:var(--topbar);z-index:40;display:flex;align-items:center;gap:6px;padding:0 max(14px,env(safe-area-inset-right)) 0 max(14px,env(safe-area-inset-left));background:var(--bg);border-bottom:1px solid var(--line-soft);font-size:14px}
.brand{display:flex;align-items:center;gap:9px;font-weight:600;text-decoration:none;white-space:nowrap;min-width:0}
.brand span:last-child{overflow:hidden;text-overflow:ellipsis}
.brand-mark{width:22px;height:22px;flex:none}
.topnav{display:none;gap:1px;margin-left:12px;overflow:hidden}
.topnav a{padding:6px 9px;border-radius:999px;text-decoration:none;color:var(--ink-2);white-space:nowrap}
.topnav a:hover,.topnav a[aria-current="true"]{color:var(--ink);background:var(--surface-2)}
@media (min-width:1100px){.topnav{display:flex}}
.spacer{flex:1}
.chip{padding:5px 10px;border-radius:999px;text-decoration:none;font-weight:600;font-size:13px;border:1px solid var(--line);color:var(--ink-2)}
.chip[aria-current="page"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.icon-btn{width:36px;height:36px;flex:none;display:grid;place-items:center;border-radius:50%;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer}
.icon-btn:hover{background:var(--surface-2)}
.i-moon{display:none}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .i-sun{display:none}:root:not([data-theme="light"]) .i-moon{display:block}}
:root[data-theme="dark"] .i-sun{display:none}:root[data-theme="dark"] .i-moon{display:block}
.progress{position:fixed;left:0;right:0;top:var(--topbar);height:2px;z-index:41;pointer-events:none}
.progress i{position:absolute;inset:0;transform-origin:0 50%;transform:scaleX(0);background:var(--thread)}
.progress b{position:absolute;top:-4px;left:0;width:10px;height:10px;border-radius:50%;background:var(--thread);transform:translateX(-5px);opacity:0}
.rail{display:none}
@media (min-width:1360px){
.rail{display:flex;flex-direction:column;position:fixed;right:6px;top:50%;transform:translateY(-50%);z-index:30;padding:4px 2px}
.rail-dot{position:relative;display:flex;align-items:center;justify-content:center;width:22px;height:20px;text-decoration:none}
.rail-dot .dot{width:5px;height:5px;border-radius:50%;background:var(--wire);transition:transform .2s,background .2s}
.rail-dot:hover .dot,.rail-dot:focus-visible .dot{background:var(--thread);transform:scale(1.3)}
.rail-dot[aria-current="true"] .dot{background:var(--thread);transform:scale(1.5)}
.rail-label{position:absolute;right:calc(100% + 6px);top:50%;transform:translate(6px,-50%);padding:3px 10px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--ink);font-size:13px;font-weight:600;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%)}
}

/* ---------- opening */
main{padding-top:var(--topbar)}
.lab{max-width:1320px;margin:0 auto;padding:18px max(18px,env(safe-area-inset-left)) 10px max(18px,env(safe-area-inset-right))}
@media (min-width:1360px){.lab{padding-right:40px}}
.intro{max-width:1040px;margin:0 0 14px}
.kicker{font-size:13px;font-weight:600;letter-spacing:.07em;text-transform:uppercase;color:var(--thread-text);margin:4px 0 6px}
h1{font-size:clamp(36px,3.6vw,52px);margin:0 0 10px;font-weight:600}
.deck{font-size:18px;line-height:1.5;color:var(--ink-2);margin:0;max-width:920px}
.incoming{margin:0 0 12px;font-size:15px;color:var(--ink-2);border-left:3px solid var(--thread);padding-left:10px}

/* ---------- the tree and the answer side by side */
.bench{display:grid;grid-template-columns:minmax(0,1fr) 370px;gap:22px;align-items:start}
.picker,.tree-scroll{grid-column:1}
.answer{grid-column:2;grid-row:1 / span 2}
.picker{display:none;margin:0 0 8px}
.picker label{display:block;font-size:13px;font-weight:600;color:var(--muted);margin-bottom:4px}
.picker select{width:100%;font:500 16px var(--sans);color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:10px 12px;min-height:46px}
.tree-scroll{position:relative;border:1px solid var(--line-soft);border-radius:18px;background:var(--surface)}
.tree{position:relative;height:calc(var(--row) * 7);margin:6px 4px}
.wires{position:absolute;inset:0;width:100%;height:100%;overflow:visible;pointer-events:none}
.wires path{fill:none;vector-effect:non-scaling-stroke}
.w-kin{stroke:var(--wire);stroke-width:1.3}
.w-wed{stroke:var(--wire);stroke-width:1.1}
.w-lit{stroke:var(--thread);stroke-width:3.4;stroke-linecap:round;stroke-linejoin:round}
.w-lit.bond{stroke:var(--bond)}
.w-lit.draw{stroke-dasharray:var(--len) var(--len);stroke-dashoffset:var(--len);animation:draw .9s cubic-bezier(.4,.1,.2,1) forwards}
@keyframes draw{to{stroke-dashoffset:0}}
.p{position:absolute;transform:translate(-50%,-50%);width:var(--pw,82px);min-height:40px;padding:4px 5px;border-radius:12px;border:1px solid var(--pill-line);background:var(--pill);color:var(--ink);font:600 12.5px/1.15 var(--sans);text-align:center;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;z-index:2;transition:background .2s,border-color .2s,color .2s,box-shadow .2s}
.p small{font-weight:400;font-size:11px;color:var(--muted)}
.p:hover{border-color:var(--thread)}
.p.wed{border-style:dashed}
.p.me{background:var(--ink);color:var(--bg);border-color:var(--ink);font-size:14px}
.p.me small{color:var(--bg)}
.p.top{box-shadow:0 0 0 3px var(--thread-soft)}
.p.on{border-color:var(--thread);box-shadow:0 0 0 2px var(--thread)}
.p.target{background:var(--thread);border-color:var(--thread);color:var(--thread-ink)}
.p.target small{color:var(--thread-ink)}
.tree.bond .p.target{background:var(--bond);border-color:var(--bond);color:var(--bond-ink)}
.tree.bond .p.target small{color:var(--bond-ink)}
.tree.bond .p.on{border-color:var(--bond);box-shadow:0 0 0 2px var(--bond)}
.tree.nil .p.target{background:var(--surface-2);color:var(--ink);border:2px dashed var(--muted);box-shadow:none}
.tree.nil .p.target small{color:var(--muted)}
.p.origin:not(.me){outline:2.5px solid var(--ink);outline-offset:2px}
.p.none{opacity:.98}
.knot{position:absolute;z-index:3;transform:translate(-50%,-50%) scale(.4);opacity:0;width:22px;height:22px;border-radius:50%;background:var(--thread);color:var(--thread-ink);font:700 12px/22px var(--sans);text-align:center;pointer-events:none;transition:opacity .25s,transform .25s}
.knot.in{opacity:1;transform:translate(-50%,-50%) scale(1)}
.tree.bond .knot{background:var(--bond);color:var(--bond-ink)}
.knot.wed{width:auto;padding:0 6px;font-size:13px;border-radius:999px}
.gen{position:absolute;left:8px;transform:translateY(-50%);font-size:11px;color:var(--muted);letter-spacing:.04em;pointer-events:none}
.legend{display:flex;flex-wrap:wrap;gap:4px 16px;margin:8px 4px 0;font-size:13px;color:var(--muted)}
.legend i{display:inline-block;width:18px;height:0;border-top:3px solid var(--thread);vertical-align:middle;margin-right:6px}
.legend i.bond{border-color:var(--bond)}
.legend i.wed{border-top:3px double var(--wire);height:3px}

.answer{position:sticky;top:calc(var(--topbar) + 14px);background:var(--surface);border:1px solid var(--line-soft);border-radius:18px;padding:18px 20px 16px}
.a-name{font-size:15px;font-weight:600;color:var(--ink-2);margin:0}
.a-rel{display:flex;align-items:baseline;gap:10px;margin:2px 0 0;font-family:var(--serif);line-height:1}
.a-rel b{font-size:68px;font-weight:600;color:var(--thread);letter-spacing:.01em}
.answer.bond .a-rel b{color:var(--bond)}
.answer.flat .a-rel b{display:none}
.a-rel span{font-size:24px;font-weight:600}
.a-line{font-size:14px;color:var(--muted);margin:4px 0 10px}
.a-count{font-size:15.5px;line-height:1.5;margin:0 0 12px;color:var(--ink-2)}
.effects{list-style:none;margin:0 0 12px;padding:0;border-top:1px solid var(--line-soft)}
.effects li{display:grid;grid-template-columns:18px 1fr;gap:2px 9px;padding:9px 0;border-bottom:1px solid var(--line-soft);font-size:14px;line-height:1.42}
.effects li::before{content:"";grid-row:1 / span 2;width:12px;height:12px;margin-top:4px;border-radius:50%;border:2px solid var(--ok)}
.effects li[data-s="stop"]::before{background:var(--stop);border-color:var(--stop)}
.effects li[data-s="part"]::before{border-color:var(--warn);background:linear-gradient(90deg,var(--warn) 50%,transparent 50%)}
.effects li[data-s="none"]::before{border-color:var(--muted);border-style:dotted}
.effects b{font-size:12.5px;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);font-weight:600}
.a-actions{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 6px}
.btn{font:600 14.5px var(--sans);border-radius:999px;padding:8px 15px;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;min-height:44px}
.btn:hover{border-color:var(--thread)}
.a-head{position:relative}
.a-clear{position:static;margin:2px 0 8px;font:600 13px var(--sans);color:var(--ink-2);background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:6px 11px;min-height:36px;cursor:pointer}
.a-clear:hover{border-color:var(--thread)}
.answer .a-head{padding-right:0}
@media (pointer:coarse){.a-clear{min-height:44px}}
html:not(.live) .a-clear{display:none}
.a-origin{font-size:13.5px;color:var(--muted);margin:0 0 6px}

/* ---------- sections */
.after{border-top:1px solid var(--line-soft);margin-top:34px}
.prose{max-width:1060px;margin:0 auto;padding:34px max(18px,env(safe-area-inset-left)) 20px}
.block{max-width:720px;margin:0 auto 46px}
.block h2{font-size:clamp(28px,3vw,36px);margin:0 0 14px}
.block p{margin:0 0 14px}
.tablewrap{overflow-x:auto;margin:14px 0 18px;border:1px solid var(--line);border-radius:12px;background:var(--surface)}
.block.wide{max-width:960px}
table{border-collapse:collapse;width:100%;font-size:14.5px}
th,td{padding:8px 12px;border-bottom:1px solid var(--line-soft);text-align:left;vertical-align:top}
thead th{font-size:12.5px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.04em;white-space:nowrap}
td.deg{font-family:var(--serif);font-size:22px;font-weight:600;color:var(--thread);white-space:nowrap;line-height:1.1}
tr.bond td.deg{color:var(--bond)}
tr.nil td.deg{color:var(--muted);font-family:var(--sans);font-size:14px}
td a{text-decoration:none;border-bottom:1px dotted var(--muted)}
.sources{padding-left:20px;font-size:15px}
.sources li{margin-bottom:8px}
.note{font-size:15px;color:var(--ink-2)}
.share{max-width:720px;margin:14px auto}
.answer .share{margin:8px 0 0}
.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.share-label{font-size:14px;color:var(--muted);margin-right:4px}
.ic{width:40px;height:40px;display:inline-grid;place-items:center;border-radius:50%;border:1px solid var(--line-soft);background:transparent;color:var(--ink);cursor:pointer;padding:0}
.ic:hover,.ic:focus-visible{color:var(--thread-text);border-color:var(--thread)}
@media (pointer:coarse){.ic{width:44px;height:44px}}
.share-msg{font-size:13.5px;color:var(--muted);margin:6px 0 0;min-height:1.2em}
.share-msg:empty{display:none}
.site-footer{display:flex;flex-wrap:wrap;gap:8px 22px;justify-content:center;padding:26px 18px calc(34px + env(safe-area-inset-bottom));border-top:1px solid var(--line);font-size:14px;color:var(--muted)}
html:not(.live) .a-actions,html:not(.live) .answer .share{display:none}

/* ---------- narrower: the answer's head stays in view above the tree; the details follow it */
@media (max-width:1079px){
  .bench{display:flex;flex-direction:column;align-items:stretch;gap:10px}
  .bench>*{min-width:0}
  .answer{display:contents}
  .picker{order:0}
  .a-head{order:1;position:sticky;top:var(--topbar);z-index:6;background:var(--surface);border:1px solid var(--line-soft);border-radius:14px;padding:10px 16px 8px;box-shadow:0 6px 16px -10px rgba(0,0,0,.35)}
  .tree-scroll{order:2}
  .a-body{order:3;background:var(--surface);border:1px solid var(--line-soft);border-radius:14px;padding:14px 16px}
  .a-rel b{font-size:46px}
  .a-rel span{font-size:21px}
  .a-line{margin:2px 0 0}
  .a-clear{position:absolute;top:10px;right:10px;margin:0}
  .a-head:has(.a-clear:not([hidden])) .a-name{padding-right:150px}
}
@media (max-width:760px){
  :root{--row:78px}
  .lab{padding-left:12px;padding-right:12px}
  h1{font-size:34px}
  .deck{font-size:16.5px}
  .picker{display:block}
  .tree-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;overscroll-behavior-x:contain;scrollbar-width:thin}
  .tree{width:820px;--pw:74px}
  .p{font-size:11.5px;padding:3px 4px}
  .p small{font-size:10.5px}
  .a-rel b{font-size:40px}
  .a-rel span{font-size:19px}
  .a-name{font-size:14px}
  .gen{display:none}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}.w-lit.draw{animation:none;stroke-dashoffset:0}.knot{transition:none}}
@media print{.topbar,.rail,.progress,.share,.a-actions{display:none}.answer{position:static}}