/* Harbinger Labs — article styling (dark, minimal, editorial) */
:root{
  --bg:#000; --ink:#fff; --ink-2:#CACBCF; --dim:#9A9CA1; --faint:#6C6C6E;
  --line:rgba(255,255,255,.15); --line-soft:rgba(255,255,255,.08);
  --signal:#7FE3D6;
  --pixel:'Pixelify Sans',monospace; --body:'Inter',system-ui,sans-serif; --term:'VT323',monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--ink-2);font-family:var(--body);font-weight:400;line-height:1.75;font-size:18px;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
::selection{background:#fff;color:#000}
a{color:inherit;text-decoration:none}

/* nav */
.doc-nav{position:sticky;top:0;z-index:30;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:16px clamp(22px,5vw,64px);background:rgba(0,0,0,.78);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.doc-brand{display:flex;align-items:center;gap:12px;font-family:var(--pixel);font-weight:500;font-size:18px;color:#fff}
.doc-brand svg{width:24px;height:24px;display:block}
.doc-back{font-family:var(--body);font-weight:500;font-size:14.5px;color:var(--dim);position:relative;padding:4px 0}
.doc-back::after{content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;background:#fff;transform:scaleX(0);transform-origin:right;transition:transform .35s var(--ease)}
.doc-back:hover{color:#fff}.doc-back:hover::after{transform:scaleX(1);transform-origin:left}

/* container */
.doc{max-width:740px;margin:0 auto;padding:clamp(54px,9vw,120px) clamp(22px,5vw,40px) 110px}
.doc-wide{max-width:820px}

/* header */
.doc-eyebrow{font-family:var(--term);font-size:18px;letter-spacing:.06em;color:var(--signal);margin-bottom:22px}
.doc-title{font-family:var(--pixel);font-weight:500;font-size:clamp(30px,5vw,54px);line-height:1.1;letter-spacing:.005em;color:#fff;max-width:22ch}
.doc-lede{margin-top:clamp(22px,3vw,32px);font-size:clamp(18px,1.6vw,21px);line-height:1.6;color:var(--dim);max-width:62ch}
.doc-meta{display:flex;flex-wrap:wrap;gap:12px 32px;margin-top:clamp(30px,3.6vw,44px);padding-top:24px;border-top:1px solid var(--line)}
.doc-meta span{font-family:var(--term);font-size:16px;letter-spacing:.02em;color:var(--faint)}
.doc-meta b{color:#fff;font-weight:400;margin-right:9px}

/* body */
.doc-body{margin-top:clamp(46px,6vw,78px)}
.doc-body h2{font-family:var(--pixel);font-weight:500;font-size:clamp(22px,2.8vw,32px);line-height:1.14;color:#fff;
  margin:clamp(56px,7vw,92px) 0 22px;display:flex;align-items:baseline;gap:18px}
.sec-no{font-family:var(--term);font-size:.66em;color:var(--signal)}
.doc-body h3{font-family:var(--pixel);font-weight:500;font-size:clamp(18px,2vw,22px);color:#fff;margin:40px 0 14px}
.doc-body p{margin:0 0 1.3em;color:var(--ink-2);max-width:68ch}
.doc-body strong{color:#fff;font-weight:600}
.doc-body em{font-style:italic;color:#fff}
.warn{color:#E6B45C;font-weight:500}

/* inline code + stats */
.inline,code.inline,code{font-family:var(--term);font-size:.95em;color:#fff;background:rgba(255,255,255,.06);
  padding:1px 6px;border-radius:2px;white-space:nowrap}
.stat{font-family:var(--term);color:var(--signal);white-space:nowrap}
.stat .var{font-style:normal}
.num{font-family:var(--term);font-size:1.1em;color:#fff}

/* lists */
.doc-body ul,.doc-body ol{margin:0 0 1.5em;padding:0;list-style:none;max-width:66ch}
.doc-body li{position:relative;padding-left:26px;margin-bottom:13px;color:var(--ink-2)}
.doc-body ul li::before{content:"";position:absolute;left:2px;top:.62em;width:6px;height:6px;background:var(--signal)}
.doc-body ol{counter-reset:li}
.doc-body ol li::before{counter-increment:li;content:counter(li);position:absolute;left:0;top:0;font-family:var(--term);color:var(--signal)}

/* tables — minimal hairline rows */
.table-wrap{overflow-x:auto;margin:clamp(40px,4.8vw,64px) 0;
  scrollbar-width:none;-ms-overflow-style:none}            /* never show a scrollbar track */
.table-wrap::-webkit-scrollbar{display:none;width:0;height:0}
/* code blocks: same — keep scroll capability, hide the track */
pre,.code pre{scrollbar-width:none;-ms-overflow-style:none}
pre::-webkit-scrollbar,.code pre::-webkit-scrollbar{display:none;width:0;height:0}
.doc-body table,table.data{width:100%;border-collapse:collapse;font-size:15.5px;margin:0}
caption{caption-side:top;text-align:left;font-family:var(--term);font-size:16px;color:var(--faint);margin-bottom:16px}
thead th{font-family:var(--term);font-size:15px;color:var(--dim);font-weight:400;text-align:left;
  padding:0 18px 12px;border-bottom:1px solid var(--line);vertical-align:bottom}
th.t-num,td.t-num{text-align:right;font-variant-numeric:tabular-nums}
tbody td{padding:14px 18px;border-bottom:1px solid var(--line-soft);color:var(--ink-2);vertical-align:top}
tbody tr.row-hi td{color:#fff}
.t-seal{color:var(--signal)!important}
.num.t-seal{color:var(--signal)}

/* equations — clean, no box */
.eq{margin:clamp(34px,4vw,54px) 0;display:flex;flex-direction:column;gap:12px}
.eq-row{display:flex;flex-wrap:wrap;align-items:baseline;gap:.35em 1.1em;font-family:var(--term);font-size:clamp(17px,1.5vw,20px);color:var(--ink-2)}
.eq-row .var{color:#fff}
.eq-row .op{color:var(--faint)}
.eq-row .val{font-family:var(--pixel);font-weight:500;color:var(--signal);font-size:1.1em}
.eq-row .ci{color:var(--faint);font-size:.9em}
.eq-row .lab{color:var(--dim);font-size:.9em}
.eq-row sub{font-size:.66em;color:var(--dim)}

/* code — minimal, faint left rule, lowercase caption, no box */
.code{margin:clamp(38px,4.4vw,60px) 0;padding-left:clamp(18px,2.4vw,26px);border-left:1px solid var(--line)}
.c-cap{display:block;font-family:var(--term);font-size:15px;color:var(--faint);margin-bottom:14px}
.code pre,pre{margin:0;font-family:var(--term);font-size:16px;line-height:1.65;color:#CFE9E3;overflow-x:auto;white-space:pre;tab-size:2}

/* KPI stats — clean, hairline-framed row, no boxes */
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(24px,3vw,44px);margin:clamp(40px,4.8vw,64px) 0;
  padding:clamp(26px,3vw,36px) 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
@media(max-width:680px){.kpis{grid-template-columns:repeat(2,1fr);gap:28px}}
.kpi{display:flex;flex-direction:column;gap:12px}
.k-num{display:block;font-family:var(--pixel);font-weight:600;font-size:clamp(30px,3.6vw,46px);line-height:.95;color:#fff}
.k-num small{font-family:var(--term);font-size:.34em;color:var(--dim);margin-left:.14em;font-weight:400}
.k-lab{display:block;font-family:var(--term);font-size:15px;color:var(--faint);line-height:1.45}

/* ring gauges */
.rings{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(24px,3vw,46px);margin:clamp(42px,5vw,66px) 0}
@media(max-width:560px){.rings{grid-template-columns:1fr;gap:30px}}
.ring{display:flex;flex-direction:column;align-items:center;gap:16px;text-align:center}
.dial{position:relative;width:116px;height:116px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:conic-gradient(var(--signal) calc(var(--p,0)*1%),rgba(255,255,255,.08) 0)}
.dial::before{content:"";position:absolute;inset:10px;border-radius:50%;background:#000}
.dial b{position:relative;font-family:var(--pixel);font-weight:500;font-size:21px;color:#fff}
.r-lab{font-family:var(--term);font-size:16px;color:var(--dim);max-width:22ch;line-height:1.4}

/* quadrant — hairline grid */
.quad-wrap{margin:clamp(40px,4.8vw,64px) 0}
.quad{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line-soft)}
.qc{background:#000;padding:clamp(22px,2.6vw,32px);display:flex;flex-direction:column;gap:14px;min-height:118px;justify-content:space-between}
.q-k{font-family:var(--term);font-size:15px;color:var(--dim);line-height:1.4}
.q-v{font-family:var(--pixel);font-weight:600;font-size:clamp(28px,3.4vw,40px);color:#fff}
.qc.hi .q-v{color:var(--signal)}
.quad-ax{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px 16px;margin-top:14px;font-family:var(--term);font-size:15px;color:var(--faint)}

/* bar rows */
.bars{margin:clamp(40px,4.8vw,64px) 0;display:flex;flex-direction:column;gap:18px}
.bar-row{display:grid;grid-template-columns:minmax(130px,1fr) 2.4fr auto;gap:22px;align-items:center}
.bar-lab{font-family:var(--term);font-size:16px;color:var(--dim)}
.bar-track{height:5px;background:rgba(255,255,255,.07);position:relative;overflow:hidden}
.bar-fill{position:absolute;inset:0 auto 0 0;width:0;background:var(--signal);transition:width 1s var(--ease)}
.bar-val{font-family:var(--term);font-size:18px;color:#fff;min-width:56px;text-align:right;font-variant-numeric:tabular-nums}
@media(max-width:560px){.bar-row{grid-template-columns:1fr auto}.bar-track{grid-column:1/-1;order:3}}

/* process flow — minimal columns, hairline separators */
.fig{margin:clamp(44px,5.2vw,70px) 0}
.flow{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(22px,3vw,40px)}
@media(max-width:640px){.flow{grid-template-columns:1fr;gap:24px}}
.step{display:flex;flex-direction:column;gap:11px;padding-top:18px;border-top:1px solid var(--line)}
.step.on{border-top-color:var(--signal)}
.s-k{font-family:var(--term);font-size:16px;color:var(--faint)}
.step.on .s-k{color:var(--signal)}
.s-t{font-family:var(--pixel);font-weight:500;font-size:18px;color:#fff;line-height:1.1}
.s-d{font-size:14.5px;color:var(--dim);line-height:1.55}
figcaption{margin-top:18px;font-family:var(--term);font-size:16px;color:var(--faint);line-height:1.5}
.fig-no{color:var(--signal);margin-right:8px}

/* callout — minimalist, hairline rules; consecutive callouts collapse into a tight stack */
.callout{margin:clamp(30px,3.4vw,44px) 0;padding:clamp(20px,2.2vw,26px) 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.callout + .callout{margin-top:0;border-top:0;padding-top:clamp(20px,2.2vw,26px)}
.callout-k{display:block;font-family:var(--term);font-size:15px;letter-spacing:.04em;color:var(--faint);margin-bottom:10px}
.callout p{margin:0;color:var(--ink-2);max-width:none}

/* heatmap grid (correlation matrix as native cells) */
.hm-table{table-layout:fixed;width:100%}
.hm-table caption{margin-bottom:18px}
.hm-table thead th{padding-bottom:10px;font-size:14px}
.hm-table .hm-lab{width:27%;font-family:var(--term);font-size:14.5px;color:var(--dim);padding:7px 14px 7px 0;border:0}
td.hm{text-align:center;font-family:var(--term);font-size:15px;padding:9px 6px;border:2px solid #000;
  border-radius:2px;font-variant-numeric:tabular-nums;transition:transform .2s var(--ease)}
.hm-table tbody tr:hover td.hm{transform:scale(1.03)}
.hm-table tbody td{border-bottom:0}

/* pull / lede emphasis line */
.pull{margin:clamp(48px,6vw,80px) 0;padding:clamp(26px,3vw,38px) 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.pull p{font-family:var(--pixel);font-weight:500;font-size:clamp(21px,2.7vw,32px);line-height:1.26;color:#fff;max-width:24ch;margin:0}
.pull p .key{color:var(--signal)}
.pull .src{display:block;margin-top:18px;font-family:var(--term);font-size:15px;color:var(--faint);max-width:none}

/* notrun chip */
.notrun{font-family:var(--term);font-size:15px;color:#E6B45C;border:1px dashed rgba(230,180,92,.4);
  padding:3px 10px;border-radius:2px;display:inline-block}

/* footer */
.doc-foot{max-width:820px;margin:0 auto;padding:36px clamp(22px,5vw,40px) 64px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px 26px;justify-content:space-between;align-items:center;
  font-family:var(--term);font-size:16px;color:var(--faint)}
.doc-foot a{color:var(--dim)}.doc-foot a:hover{color:#fff}
.doc-foot .fine{color:var(--faint)}

/* reveals (article.js adds .in) */
.rv{opacity:0;transform:translateY(16px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.rv{opacity:1!important;transform:none!important}*{animation:none!important}}