:root{
  --paper:#f8f6f4;
  --panel:#fffdf8;
  --ink:#17130f;
  --muted:#6f6962;
  --line:#d8d1c8;
  --accent:#284e74;
  --soft:#e9eef3;
  --sans:"IBM Plex Sans",Arial,-apple-system,BlinkMacSystemFont,sans-serif;
  --display:"American Typewriter","Courier Prime","Courier New",monospace;
}
*{box-sizing:border-box}
html{background:var(--paper)}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);line-height:1.55}
a{color:var(--accent)}
.page{max-width:980px;margin:0 auto;padding:22px 18px 54px}
.topline{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:9px 0 12px;border-top:3px solid var(--ink);border-bottom:1px solid var(--ink);font-size:11px;letter-spacing:.1em;text-transform:uppercase}
.case-id{font-weight:800;color:var(--accent)}
.source{color:var(--muted);text-decoration:none}
.hero{padding:42px 0 28px;border-bottom:1px solid var(--line)}
.eyebrow{margin:0 0 9px;color:var(--accent);font-size:11px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}
h1{max-width:760px;margin:0;font-family:var(--display);font-size:clamp(34px,7vw,64px);font-weight:400;line-height:.98;letter-spacing:-.035em}
.lede{max-width:720px;margin:18px 0 0;color:var(--muted);font-size:15px}
.facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border:1px solid var(--ink);margin:26px 0 0;background:var(--panel)}
.fact{padding:15px 16px;border-right:1px solid var(--line)}
.fact:last-child{border-right:0}
.fact b{display:block;font-family:var(--display);font-size:25px;font-weight:400;line-height:1}
.fact span{display:block;margin-top:5px;color:var(--muted);font-size:10px;letter-spacing:.08em;text-transform:uppercase}
.section{padding:30px 0 0}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;border-bottom:1px solid var(--ink);padding-bottom:8px;margin-bottom:16px}
h2{margin:0;font-family:var(--display);font-size:23px;font-weight:400}
.section-head span{color:var(--muted);font-size:11px}
.flow{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;list-style:none;padding:0;margin:0}
.flow li{position:relative;min-height:126px;padding:13px 11px 12px;border:1px solid var(--line);background:var(--panel)}
.flow .level{display:block;margin-bottom:8px;color:var(--accent);font-size:10px;font-weight:800;letter-spacing:.12em}
.flow b{display:block;font-family:var(--display);font-size:15px;line-height:1.18}
.flow p{margin:7px 0 0;color:var(--muted);font-size:11.5px;line-height:1.45}
.visual{border:1px solid var(--ink);background:var(--panel);padding:16px}
.visual-title{display:flex;justify-content:space-between;gap:16px;margin-bottom:14px;font-size:11px;color:var(--muted)}
.rail{display:flex;align-items:stretch;overflow-x:auto;padding-bottom:2px}
.node{min-width:112px;flex:1;padding:10px;border:1px solid var(--line);background:var(--paper)}
.node b{display:block;font-size:12px}
.node span{display:block;margin-top:3px;color:var(--muted);font-size:10px}
.arrow{display:flex;align-items:center;padding:0 6px;color:var(--accent);font-size:18px}
.node.hot{border-color:var(--accent);box-shadow:inset 0 -3px 0 var(--accent)}
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}
.panel{border:1px solid var(--line);background:var(--panel);padding:16px}
.panel h3{margin:0 0 10px;font-family:var(--display);font-size:17px;font-weight:400}
.panel p{margin:0;color:var(--muted);font-size:12.5px}
.checklist{display:grid;gap:8px;margin:0;padding:0;list-style:none}
.checklist li{padding:9px 10px;border-left:3px solid var(--accent);background:var(--soft);font-size:12px}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.chip{padding:3px 7px;border:1px solid var(--line);color:var(--muted);font:10.5px var(--display);background:var(--paper)}
.matrix{width:100%;border-collapse:collapse;font-size:11.5px}
.matrix th,.matrix td{padding:8px 9px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.matrix th{color:var(--muted);font-size:9.5px;letter-spacing:.08em;text-transform:uppercase}
.matrix tr:last-child td{border-bottom:0}
.bar{height:7px;margin-top:5px;background:#e1ddd7}
.bar i{display:block;height:100%;background:var(--accent)}
.note{margin-top:16px;padding:12px 14px;border:1px dashed var(--line);color:var(--muted);font-size:11.5px}
.dataset-detail{scroll-margin-top:14px}
.raw-note{margin:-4px 0 14px;color:var(--muted);font-size:11px}
.attachment-stack{display:grid;gap:8px;margin-bottom:24px}
.attachment-tier{border:1px solid var(--line);background:var(--panel)}
.attachment-tier>summary{display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 12px;cursor:pointer;list-style:none;font:13px var(--display)}
.attachment-tier>summary::-webkit-details-marker{display:none}
.attachment-tier>summary small{color:var(--muted);font:10px var(--sans);letter-spacing:.06em;text-transform:uppercase}
.attachment-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));margin:0;padding:0;
  border-top:1px solid var(--line);list-style:none}
.attachment-list li{min-width:0;border-bottom:1px solid var(--line)}
.attachment-list li:nth-child(odd){border-right:1px solid var(--line)}
.attachment-list li:nth-last-child(-n+2){border-bottom:0}
.attachment-link{display:flex;align-items:center;justify-content:space-between;gap:9px;padding:8px 10px;
  color:var(--ink);font:10.5px ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;text-decoration:none}
.attachment-link:hover{background:var(--soft);text-decoration:none}
.attachment-name{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.attachment-ext{flex:0 0 auto;color:var(--accent);font:9px var(--sans);letter-spacing:.06em;text-transform:uppercase}
.detail-block{margin-top:10px;border:1px solid var(--line);background:var(--panel)}
.detail-block>summary{display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 14px;cursor:pointer;font-family:var(--display);font-size:14px;list-style:none}
.detail-block>summary::-webkit-details-marker{display:none}
.detail-block>summary::before{content:"+";display:inline-grid;place-items:center;width:18px;height:18px;
  flex:0 0 auto;border:1px solid var(--line);color:var(--accent);font:14px/1 var(--sans)}
.detail-block[open]>summary::before{content:"−"}
.detail-block>summary span:first-of-type{flex:1}
.detail-block>summary small{color:var(--muted);font:10px var(--sans);letter-spacing:.06em;text-transform:uppercase}
.tree-source,.task-source,.eval-source{max-height:520px;overflow:auto;margin:0;padding:15px 16px;border-top:1px solid var(--line);
  background:#151719;color:#e8e5df;font:11px/1.58 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  white-space:pre;tab-size:2}
.level-stack{display:grid;gap:8px}
.level-pair{margin:0}
.pair-grid{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line)}
.source-pane{min-width:0;background:var(--panel)}
.source-pane+ .source-pane{border-left:1px solid var(--line)}
.source-pane h3{margin:0;padding:9px 12px;border-bottom:1px solid var(--line);font:11px var(--sans);
  color:var(--muted);letter-spacing:.05em;text-transform:uppercase}
.task-source,.eval-source{max-height:620px;border-top:0;white-space:pre-wrap;overflow-wrap:anywhere}
.detail-jump{display:inline-flex;margin-top:10px;padding:6px 9px;border:1px solid var(--line);font-size:10.5px;
  text-decoration:none;background:var(--panel)}
.footer{display:flex;justify-content:space-between;gap:16px;margin-top:34px;padding-top:12px;border-top:1px solid var(--ink);color:var(--muted);font-size:11px}
.footer a{text-decoration:none}
@media(max-width:760px){
  .facts{grid-template-columns:1fr}
  .fact{border-right:0;border-bottom:1px solid var(--line)}
  .fact:last-child{border-bottom:0}
  .flow{grid-template-columns:1fr}
  .flow li{min-height:0}
  .split{grid-template-columns:1fr}
  .pair-grid{grid-template-columns:1fr}
  .attachment-list{grid-template-columns:1fr}
  .attachment-list li,.attachment-list li:nth-child(odd),.attachment-list li:nth-last-child(-n+2){border-right:0;border-bottom:1px solid var(--line)}
  .attachment-list li:last-child{border-bottom:0}
  .source-pane+ .source-pane{border-left:0;border-top:1px solid var(--line)}
  .hero{padding-top:30px}
}