@font-face{font-family:'Instrument';font-weight:400;font-style:normal;font-display:block;src:url('/assets/fonts/instrument-sans-400.woff2') format('woff2')}
@font-face{font-family:'Instrument';font-weight:500;font-style:normal;font-display:block;src:url('/assets/fonts/instrument-sans-500.woff2') format('woff2')}
@font-face{font-family:'Instrument';font-weight:600;font-style:normal;font-display:block;src:url('/assets/fonts/instrument-sans-600.woff2') format('woff2')}
@font-face{font-family:'Plex';font-weight:400;font-style:normal;font-display:block;src:url('/assets/fonts/ibm-plex-mono-400.woff2') format('woff2')}
@font-face{font-family:'Plex';font-weight:500;font-style:normal;font-display:block;src:url('/assets/fonts/ibm-plex-mono-500.woff2') format('woff2')}

:root{
  --paper:#FBFBF9;
  --paper-2:#F2F2EF;
  --ink:#0C1012;
  --ink-2:#454B4D;
  --mid:#62686A;
  --hair:#D6D8D5;
  --hair-2:#E6E7E4;
  --red:#D8250F;
  --rail:96px;
  --pad:clamp(20px,3vw,44px);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:'Instrument',system-ui,sans-serif;
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
.m{font-family:'Plex',ui-monospace,monospace;letter-spacing:.1em;text-transform:uppercase}

/* ───────── correspondence rail (this sheet's fixed instrument) ───────── */
.rail{position:fixed;left:0;top:0;bottom:0;width:var(--rail);z-index:50;background:var(--paper);
  border-right:1px solid var(--hair);pointer-events:none}
.rail .ttl{position:absolute;top:22px;left:0;right:0;text-align:center;font-family:'Plex',monospace;
  font-size:8px;letter-spacing:.18em;text-transform:uppercase;color:var(--mid);line-height:1.7}
.rail .scale{position:absolute;left:0;right:0;top:96px;bottom:96px}
.tick{position:absolute;right:0;height:1px;background:var(--hair)}
.tick.maj{width:22px;background:var(--ink)}
.tick.min{width:11px}
.tick span{position:absolute;right:28px;top:-6px;font-family:'Plex',monospace;font-size:8.5px;
  letter-spacing:.1em;color:var(--mid);white-space:nowrap}
.craft{position:absolute;right:-1px;width:34px;height:1px;background:var(--red)}
.craft::before{content:'';position:absolute;right:0;top:-3.5px;width:7px;height:7px;background:var(--red);
  transform:rotate(45deg)}
.craft b{position:absolute;right:6px;top:-19px;font-family:'Plex',monospace;font-size:9px;
  letter-spacing:.1em;color:var(--red);white-space:nowrap;font-weight:400}
.rail .foot{position:absolute;bottom:22px;left:0;right:0;text-align:center;font-family:'Plex',monospace;
  font-size:8px;letter-spacing:.2em;color:var(--mid);text-transform:uppercase}
@media(max-width:860px){.rail{display:none}:root{--rail:0px}}

/* ───────── shell / header ───────── */
.shell{margin-left:var(--rail)}
header{position:fixed;top:0;left:var(--rail);right:0;z-index:52;padding:26px var(--pad) 44px;display:flex;
  justify-content:space-between;align-items:flex-start;
  background:linear-gradient(var(--paper) 0 74px,rgba(251,251,249,0) 118px)}
.brand{display:flex;gap:11px;align-items:center;text-decoration:none;color:var(--ink)}
.brand b{display:block;font-size:14px;font-weight:600;letter-spacing:-.005em;line-height:1.2}
.brand em{font-family:'Plex',monospace;font-style:normal;font-size:8.5px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--mid)}
nav{display:flex;gap:24px;padding-top:4px}
nav a{font-family:'Plex',monospace;font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink-2);text-decoration:none;transition:color .3s}
nav a:hover{color:var(--red)}
nav a.back{color:var(--red)}
@media(max-width:900px){nav{display:none}}

main{padding:0 var(--pad)}
section{scroll-margin-top:100px}
.tag{display:flex;gap:11px;align-items:baseline;padding:0 0 18px}
.tag i{font-family:'Plex',monospace;font-style:normal;font-size:9.5px;letter-spacing:.12em;color:var(--red)}
.tag span{font-family:'Plex',monospace;font-size:9.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-2)}
.pad{padding:clamp(64px,9vw,132px) 0}
h2{font-size:clamp(28px,4.2vw,62px);line-height:.99;letter-spacing:-.038em;font-weight:500;max-width:17ch}
.sub{margin-top:18px;font-size:15.5px;line-height:1.6;color:var(--ink-2);max-width:56ch}
.figcap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;border-top:1px solid var(--ink);
  padding:9px 0 0;font-family:'Plex',monospace;font-size:8.5px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--mid)}
.figcap b{color:var(--ink);font-weight:400}

/* ───────── hero ───────── */
.hero{min-height:100svh;display:flex;flex-direction:column;justify-content:flex-end;padding:104px 0 0}
.hero-txt{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:clamp(24px,5vw,80px);
  align-items:end;padding-bottom:30px}
@media(max-width:960px){.hero-txt{grid-template-columns:1fr;gap:22px}}
h1{font-size:clamp(34px,5.2vw,76px);line-height:.95;letter-spacing:-.04em;font-weight:500;max-width:14ch}
h1 em{font-style:normal;color:var(--red)}
.lede{font-size:clamp(14.5px,1.22vw,17.5px);line-height:1.6;color:var(--ink-2);max-width:46ch;
  padding-bottom:8px;border-top:1px solid var(--hair);padding-top:18px}
.kick{font-family:'Plex',monospace;font-size:9.5px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--red);margin-bottom:16px;display:flex;align-items:center;gap:10px}
.kick s{width:26px;height:1px;background:var(--red);text-decoration:none;display:block}
#drift{display:block;width:100%;height:auto;margin-bottom:-1px}
@media(max-width:860px){.driftwrap{overflow:hidden}.hero{justify-content:center}}

/* ───────── argument blocks ───────── */
.argu{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--hair);
  border:1px solid var(--hair);margin-top:44px}
@media(max-width:900px){.argu{grid-template-columns:1fr}}
.ar{background:var(--paper);padding:26px 26px 30px}
.ar em{font-family:'Plex',monospace;font-style:normal;font-size:9.5px;letter-spacing:.14em;color:var(--red)}
.ar h4{margin:14px 0 10px;font-size:21px;font-weight:500;letter-spacing:-.026em;max-width:24ch}
.ar p{font-size:14px;line-height:1.62;color:var(--ink-2);max-width:56ch}
.ar p+p{margin-top:10px}

/* stale-data ledger */
.ledger{margin-top:44px;border-top:1px solid var(--ink)}
.lg{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr) 120px;gap:20px;padding:17px 0;
  border-bottom:1px solid var(--hair);align-items:baseline;transition:background .3s,padding-left .3s}
.lg:hover{background:var(--paper-2);padding-left:9px}
.lg .what{font-size:17px;font-weight:500;letter-spacing:-.02em}
.lg .why{font-family:'Plex',monospace;font-size:10px;letter-spacing:.07em;text-transform:uppercase;
  color:var(--mid);line-height:1.7}
.lg .vint{font-family:'Plex',monospace;font-size:10px;letter-spacing:.07em;text-transform:uppercase;
  color:var(--red);text-align:right}
.lg.head{border-bottom:1px solid var(--hair)}
.lg.head div{font-family:'Plex',monospace;font-size:8.5px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--mid);font-weight:400}
@media(max-width:760px){.lg{grid-template-columns:1fr auto}.lg .why{display:none}}

/* deliverables */
.deliv{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--hair);
  border:1px solid var(--hair);margin-top:44px}
@media(max-width:960px){.deliv{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.deliv{grid-template-columns:1fr}}
.dv{background:var(--paper);padding:24px;min-height:210px;display:flex;flex-direction:column}
.dv em{font-family:'Plex',monospace;font-style:normal;font-size:9px;letter-spacing:.15em;color:var(--red)}
.dv h4{margin:13px 0 9px;font-size:18px;font-weight:500;letter-spacing:-.023em}
.dv p{font-size:12.5px;line-height:1.58;color:var(--ink-2)}
.dv .fmt{margin-top:auto;padding-top:12px;border-top:1px solid var(--hair-2);
  font-family:'Plex',monospace;font-size:8.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--mid)}

/* coverage plate + register */
.covwrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:clamp(26px,4vw,66px);
  align-items:start;margin-top:44px}
@media(max-width:980px){.covwrap{grid-template-columns:1fr}}
.covwrap svg{width:100%;height:auto;display:block;border:1px solid var(--hair);background:var(--paper-2)}
.streg{border-top:1px solid var(--ink)}
.streg .sthead{display:grid;grid-template-columns:1fr auto;padding:14px 0 8px;align-items:baseline;
  border-bottom:1px solid var(--hair)}
.streg .sthead b{font-size:18px;font-weight:500;letter-spacing:-.022em}
.streg .sthead span{font-family:'Plex',monospace;font-size:9px;letter-spacing:.14em;color:var(--mid);text-transform:uppercase}
.crow{display:grid;grid-template-columns:1fr auto auto;gap:16px;padding:9px 0;border-bottom:1px solid var(--hair-2);
  align-items:baseline;cursor:default;transition:background .25s,padding-left .25s}
.crow:hover{background:var(--paper-2);padding-left:8px}
.crow.hl{background:rgba(216,37,15,.06);padding-left:8px}
.crow .nm{font-size:14.5px;font-weight:500;letter-spacing:-.015em}
.crow .x{font-family:'Plex',monospace;font-size:9.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--mid)}

/* substrate panel */
.substrate{margin-top:44px;border:1px solid var(--ink);padding:clamp(26px,3.4vw,48px);position:relative;background:var(--paper)}
.substrate::before{content:'';position:absolute;inset:6px;border:1px solid var(--hair);pointer-events:none}
.substrate h3{font-size:clamp(22px,2.8vw,36px);letter-spacing:-.03em;font-weight:500;max-width:22ch}
.substrate p{margin-top:14px;font-size:14.5px;line-height:1.65;color:var(--ink-2);max-width:62ch}
.substrate .src{margin-top:22px;font-family:'Plex',monospace;font-size:9px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--mid)}
.substrate .src a{color:var(--red);text-decoration:none;border-bottom:1px solid var(--hair)}

/* cta + title block + footer */
.btn{display:inline-flex;align-items:center;gap:12px;background:var(--ink);color:var(--paper);padding:16px 26px;
  text-decoration:none;font-family:'Plex',monospace;font-size:10px;letter-spacing:.16em;text-transform:uppercase;
  transition:background .3s,transform .3s;margin-top:36px}
.btn:hover{background:var(--red);transform:translateX(4px)}
.btn.ghost{background:none;color:var(--ink);border:1px solid var(--hair);margin-left:10px}
.btn.ghost:hover{border-color:var(--red);color:var(--red);background:none}
.tblock{margin-top:64px;border:1px solid var(--ink);display:grid;
  grid-template-columns:2fr 1fr 1fr 1fr 1fr;background:var(--hair);gap:1px}
@media(max-width:860px){.tblock{grid-template-columns:1fr 1fr}}
.tb{background:var(--paper);padding:10px 14px 12px}
.tb i{display:block;font-family:'Plex',monospace;font-style:normal;font-size:7.5px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--mid);margin-bottom:5px}
.tb b{font-family:'Plex',monospace;font-size:10.5px;letter-spacing:.08em;font-weight:400;
  color:var(--ink);text-transform:uppercase}
.tb.sig b{color:var(--red)}
footer{margin-top:0;border-top:1px solid var(--ink);padding:20px 0 90px;display:flex;gap:26px;flex-wrap:wrap;
  justify-content:space-between;font-family:'Plex',monospace;font-size:9px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--mid)}
footer a{color:var(--ink-2);text-decoration:none;border-bottom:1px solid var(--hair)}
footer a:hover{color:var(--red);border-color:var(--red)}

.rv{opacity:0;transform:translateY(14px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.rv{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}