:root{
  --paper:#eef0e9;
  --paper-raised:#e2e5db;
  --ink:#232821;
  --ink-dim:#5b6154;
  --line:#c3c8b8;
  --stamp:#9c3b2c;
  --stamp-dim:#c98d80;
  --office:#2f4c5e;
  --office-dim:#7d97a3;
  --verify:#8a5c1c;
  --verify-bg:#f4e9d3;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#1b1d18;
    --paper-raised:#24261f;
    --ink:#e6e5dc;
    --ink-dim:#a2a695;
    --line:#3c3f33;
    --stamp:#e0705a;
    --stamp-dim:#7a4137;
    --office:#8fb2c4;
    --office-dim:#3f5560;
    --verify:#e0b361;
    --verify-bg:#332911;
  }
}
:root[data-theme="dark"]{
  --paper:#1b1d18;
  --paper-raised:#24261f;
  --ink:#e6e5dc;
  --ink-dim:#a2a695;
  --line:#3c3f33;
  --stamp:#e0705a;
  --stamp-dim:#7a4137;
  --office:#8fb2c4;
  --office-dim:#3f5560;
  --verify:#e0b361;
  --verify-bg:#332911;
}
*{box-sizing:border-box;}
html{background:var(--paper);}
body{
  background:var(--paper);
  color:var(--ink);
  margin:0;
  font-family:"Spectral",Georgia,serif;
  line-height:1.5;
}
::selection{background:var(--stamp-dim);color:var(--ink);}
a{color:var(--office);}
.wrap{max-width:860px;margin:0 auto;padding:0 24px 120px;}
.top{
  padding-top:20px;
  font-family:"IBM Plex Mono",monospace;
  font-size:12.5px;
}
.top a{color:var(--ink-dim);text-decoration:none;}
.top a:hover{color:var(--office);}

header.masthead{margin:36px 0 40px;}
.eyebrow{
  font-family:"IBM Plex Mono",monospace;
  font-size:12.5px;
  letter-spacing:.09em;
  text-transform:uppercase;
  color:var(--office);
  display:flex;
  gap:10px;
  align-items:center;
  margin-bottom:18px;
}
.eyebrow::before{content:"§";color:var(--stamp);font-size:15px;}
h1{
  font-size:clamp(34px,5.5vw,52px);
  font-weight:600;
  line-height:1.08;
  margin:0 0 18px;
  text-wrap:balance;
  letter-spacing:-.01em;
}
h1 em{font-style:italic;color:var(--stamp);}
.dek{
  font-size:18px;
  color:var(--ink-dim);
  max-width:62ch;
  margin:0 0 6px;
}
.coincidence{
  margin-top:22px;
  padding:16px 20px;
  background:var(--paper-raised);
  border-left:3px solid var(--stamp);
  font-size:15.5px;
  color:var(--ink);
  max-width:64ch;
}
.coincidence b{font-family:"IBM Plex Mono",monospace;font-weight:600;font-size:14.5px;}

nav.tabs{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:36px 0 8px;
  border-bottom:1px solid var(--line);
  padding-bottom:0;
}
nav.tabs button{
  font-family:"IBM Plex Mono",monospace;
  font-size:13px;
  letter-spacing:.03em;
  background:none;
  border:1px solid var(--line);
  border-bottom:none;
  color:var(--ink-dim);
  padding:10px 16px;
  cursor:pointer;
  border-radius:4px 4px 0 0;
  transform:translateY(1px);
}
nav.tabs button:hover{color:var(--ink);}
nav.tabs button.active{
  color:var(--ink);
  background:var(--paper-raised);
  border-color:var(--line);
  font-weight:600;
}
nav.tabs button:focus-visible{outline:2px solid var(--office);outline-offset:2px;}

.scenario{display:none;padding-top:30px;}
.scenario.active{display:block;}
.scenario-head{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  gap:16px;
  margin-bottom:8px;
  flex-wrap:wrap;
}
.scenario-title{font-size:22px;font-weight:600;margin:0;}
.scenario-meta{
  font-family:"IBM Plex Mono",monospace;
  font-size:12.5px;
  color:var(--ink-dim);
  text-align:right;
}
.scenario-note{color:var(--ink-dim);font-size:15px;margin:6px 0 30px;max-width:60ch;}
.noscript-note{color:var(--ink-dim);font-size:15px;padding:30px 0;}

.graph{position:relative;padding-left:2px;}
.branch-label{
  font-family:"IBM Plex Mono",monospace;
  font-size:11.5px;
  letter-spacing:.05em;
  text-transform:uppercase;
  color:var(--office);
  margin:26px 0 10px;
  display:flex;
  align-items:center;
  gap:8px;
}
.branch-label::before{content:"↳";color:var(--office-dim);font-size:14px;}
.branch-label.split{color:var(--stamp);}
.branch-label.split::before{color:var(--stamp-dim);content:"⑂";}

.col{position:relative;}
.col.indent{margin-left:26px;padding-left:20px;border-left:2px dashed var(--line);}

.node{
  position:relative;
  display:grid;
  grid-template-columns:34px 1fr;
  gap:0 14px;
  margin-bottom:0;
  cursor:pointer;
}
.node:not(:last-child) .node-body{
  border-bottom:1px solid var(--line);
}
.node-rail{
  display:flex;
  flex-direction:column;
  align-items:center;
}
.node-dot{
  width:11px;height:11px;border-radius:50%;
  background:var(--office);
  border:2px solid var(--paper);
  box-shadow:0 0 0 1.5px var(--office);
  margin-top:22px;
  flex-shrink:0;
}
.node-dot.terminal{background:var(--stamp);box-shadow:0 0 0 1.5px var(--stamp);}
.node-thread{
  width:2px;
  flex:1;
  background:var(--line);
  margin-top:4px;
}
.node:last-child .node-thread{display:none;}

.node-body{padding:16px 0 20px;}
.node-toprow{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
}
.node-label{font-size:17.5px;font-weight:600;}
.node-tags{display:flex;gap:6px;flex-wrap:wrap;align-items:center;}
.tag{
  font-family:"IBM Plex Mono",monospace;
  font-size:11px;
  letter-spacing:.03em;
  padding:2px 7px;
  border-radius:3px;
  white-space:nowrap;
}
.tag.deadline{background:var(--stamp);color:var(--paper);}
.tag.verify{background:var(--verify-bg);color:var(--verify);border:1px solid var(--verify);}

.node-facts{
  display:none;
  margin-top:12px;
  font-size:14.5px;
  color:var(--ink-dim);
}
.node.open .node-facts{display:block;}
.node.open .node-label{color:var(--office);}
.fact-row{
  display:grid;
  grid-template-columns:110px 1fr;
  gap:10px;
  padding:5px 0;
  border-top:1px dotted var(--line);
}
.fact-row:first-child{border-top:none;}
.fact-key{
  font-family:"IBM Plex Mono",monospace;
  font-size:11px;
  text-transform:uppercase;
  letter-spacing:.05em;
  color:var(--ink-dim);
  padding-top:2px;
}
.fact-val{color:var(--ink);}
.fact-val a{text-decoration-color:var(--office-dim);}
.fact-val.verify-note{color:var(--verify);font-style:italic;}
.node-hint{
  font-family:"IBM Plex Mono",monospace;
  font-size:11px;
  color:var(--ink-dim);
  opacity:.7;
  margin-top:2px;
}
.node.open .node-hint{display:none;}

footer{
  margin-top:60px;
  padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--ink-dim);
  max-width:64ch;
}
footer p{margin:0 0 10px;}

@media(max-width:600px){
  .fact-row{grid-template-columns:88px 1fr;}
  .col.indent{margin-left:14px;padding-left:14px;}
}

@media (prefers-reduced-motion: reduce){
  *{scroll-behavior:auto !important;}
}