:root{
  --paper:#F7F4EC; --paper2:#EFEBDD; --ink:#1C2B4A; --ink-soft:#3A4A6B;
  --line:#2E4A7A; --grid:rgba(46,74,122,.10); --grid2:rgba(46,74,122,.22);
  --accent:#D9622B; --accent-d:#B34E20; --ok:#2E7D4F; --card:#FFFDF8;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);
  font-family:"IBM Plex Sans",-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:17px;line-height:1.72;-webkit-font-smoothing:antialiased}
.wrap{max-width:1060px;margin:0 auto;padding:0 24px}
.mono{font-family:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace}
/* header */
.site-header{position:sticky;top:0;z-index:50;background:var(--paper);
  border-bottom:2px solid var(--ink)}
.site-header .wrap{display:flex;align-items:center;gap:28px;height:64px}
.brand{font-weight:700;font-size:20px;letter-spacing:.14em;color:var(--ink);text-decoration:none}
.brand span{color:var(--accent)}
nav.main{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
nav.main a{color:var(--ink);text-decoration:none;font-size:14.5px;font-weight:600;
  padding:8px 10px;border-radius:3px}
@media (hover:hover){
nav.main a:hover{background:var(--paper2)}
.content a:hover{color:var(--accent)}
.rel-grid a:hover{border-color:var(--accent)}
.card:hover{border-color:var(--accent)}
footer a:hover{color:#fff;text-decoration:underline}
.btn:hover{background:var(--accent-d)}
.btn-ghost:hover{background:var(--paper2)}
}
.btn:active,.btn-ghost:active{transform:translateY(1px)}
nav.main a:active,.rel-grid a:active,.card:active{opacity:.85}
.rel-grid>*,.cards>*,footer .cols>*{min-width:0}
.img-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:22px 0}
.img-grid>*{min-width:0}
/* hero */
.hero{border-bottom:2px solid var(--ink);
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px),
    linear-gradient(var(--grid2) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid2) 1px,transparent 1px);
  background-size:24px 24px,24px 24px,120px 120px,120px 120px}
.hero .wrap{padding-top:56px;padding-bottom:52px}
.eyebrow{font-family:"IBM Plex Mono",monospace;font-size:13px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--line);margin:0 0 14px}
.hero h1{font-size:clamp(30px,4.6vw,46px);line-height:1.18;margin:0 0 18px;letter-spacing:-.01em}
.lede{font-size:19px;color:var(--ink-soft);max-width:760px;margin:0 0 26px}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 30px;padding:0;list-style:none}
.chips li{font-family:"IBM Plex Mono",monospace;font-size:13px;background:var(--card);
  border:1px solid var(--line);border-radius:3px;padding:7px 12px;display:flex;gap:8px;align-items:center}
.chips li::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--ok);flex:none}
.cta-row{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;
  font-weight:700;font-size:16px;padding:14px 26px;border-radius:3px;border:2px solid var(--accent-d)}
.btn-ghost{display:inline-block;color:var(--ink);text-decoration:none;font-weight:700;
  font-size:16px;padding:12px 24px;border-radius:3px;border:2px solid var(--ink);background:transparent}
.sig{margin-top:36px;background:var(--card);border:1px solid var(--line);border-radius:4px;padding:18px}
.sig figcaption{font-family:"IBM Plex Mono",monospace;font-size:12.5px;color:var(--ink-soft);margin-top:10px}
/* content */
.content{padding:52px 0 20px}
.content h2{font-size:27px;margin:46px 0 16px;padding-top:10px;
  border-top:3px solid var(--ink);letter-spacing:-.01em}
.content h3{font-size:20px;margin:32px 0 12px;color:var(--ink)}
.content p{margin:0 0 18px;max-width:78ch}
.content ul,.content ol{margin:0 0 20px;padding-left:26px;max-width:78ch}
.content li{margin-bottom:8px}
.content li::marker{color:var(--accent);font-weight:700}
.content a{color:var(--line);text-decoration:underline;text-underline-offset:3px}
.content table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.content th,.content td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.content th{background:var(--ink);color:var(--paper);font-weight:600}
.content td{font-family:"IBM Plex Mono",monospace;font-size:13.5px}
.content blockquote{margin:24px 0;padding:16px 20px;background:var(--paper2);
  border-left:4px solid var(--accent);max-width:78ch}
.content blockquote p{margin:0}
.content hr{border:none;border-top:1px solid var(--line);margin:36px 0;opacity:.5}
.evidence-strip{display:flex;flex-wrap:wrap;gap:10px;margin:34px 0;padding:18px;
  background:var(--card);border:1px dashed var(--line);border-radius:4px;list-style:none}
.evidence-strip li{font-family:"IBM Plex Mono",monospace;font-size:13px;display:flex;gap:8px;align-items:center}
.evidence-strip li::before{content:"¹3";color:var(--ok);font-weight:700}
/* related + cta band */
.related{padding:10px 0 46px}
.related h2{font-size:22px;border-top:3px solid var(--ink);padding-top:14px;margin:0 0 18px}
.rel-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
.rel-grid a{display:block;background:var(--card);border:1px solid var(--line);border-radius:4px;
  padding:16px 18px;text-decoration:none;color:var(--ink);font-weight:600;font-size:15.5px}
.rel-grid a small{display:block;font-weight:400;color:var(--ink-soft);font-size:13px;margin-top:6px}
.cta-band{background:var(--ink);color:var(--paper);padding:52px 0;margin-top:10px}
.cta-band h2{margin:0 0 12px;font-size:28px}
.cta-band p{color:#C9D4E8;max-width:70ch;margin:0 0 24px}
/* footer */
footer{background:#141F38;color:#C9D4E8;padding:44px 0 30px;font-size:14.5px}
footer .cols{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:28px;margin-bottom:28px}
footer h4{color:var(--paper);font-size:14px;letter-spacing:.12em;text-transform:uppercase;margin:0 0 14px}
footer a{color:#C9D4E8;text-decoration:none}
footer ul{list-style:none;margin:0;padding:0}
footer li{margin-bottom:8px}
.copy{border-top:1px solid #2A3A5E;padding-top:18px;font-size:13px;color:#8FA0BE}
/* index cards */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;margin:30px 0 50px}
.card{background:var(--card);border:1px solid var(--line);border-radius:4px;padding:22px;text-decoration:none;color:var(--ink);display:block}
.card h3{margin:0 0 8px;font-size:18px}
.card p{margin:0;font-size:14.5px;color:var(--ink-soft)}
.card .k{font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--accent);letter-spacing:.06em}
/* contact form */
.form{background:var(--card);border:1px solid var(--line);border-radius:4px;padding:28px;max-width:640px;margin:26px 0}
.form label{display:block;font-weight:600;font-size:14.5px;margin:16px 0 6px}
.form input,.form textarea{width:100%;font:inherit;padding:11px 13px;border:1px solid var(--line);
  border-radius:3px;background:#fff;color:var(--ink)}
.form textarea{min-height:130px;resize:vertical}
.form button{margin-top:20px;cursor:pointer}
/* signature svg */
.sig-svg{width:100%;height:auto;display:block}
@media (max-width:640px){
  body{font-size:16px}
  nav.main{display:none}
  .hero .wrap{padding-top:40px;padding-bottom:36px}
  footer .cols{grid-template-columns:1fr}
  .content table{font-size:13px}
}