/* Pilargo — pilargo.info (consumer education)
   Sibling to pilargo.io: same brand gold and cytometry teal, but the type
   pairing is deliberately inverted — serif display over humanist sans body,
   set larger — so the .io site reads as a document and this one as a
   conversation. Magenta is the PE fluorescence channel, reserved exclusively
   for the Muse fraction in the proportion field. It never decorates. */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,400;0,9..144,600;0,9..144,700;1,9..144,400&family=Karla:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  --ink:#15191f; --paper:#fbfaf8; --panel:#f3f0e9; --panel-warm:#f7f2e4;
  --gold:#eba91f; --gold-deep:#a8760a;
  --gate:#146b5f; --gate-soft:#e6efec;
  --signal:#c2416e; --signal-soft:#fbeef3;
  --muted:#63676d; --rule:#e3ded4; --rule-strong:#c7c0b2;
  --display:'Fraunces',Georgia,serif;
  --body:'Karla',system-ui,-apple-system,sans-serif;
  --data:'IBM Plex Mono',ui-monospace,monospace;
  --wrap:1080px; --read:660px;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--body);font-size:19px;line-height:1.68;
  -webkit-font-smoothing:antialiased;
}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px}
.read{max-width:var(--read)}
img{max-width:100%;display:block}
a{color:var(--gate);text-decoration:none;border-bottom:1px solid rgba(20,107,95,.3)}
a:hover{border-bottom-color:var(--gate)}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px;border-radius:2px}

h1,h2,h3{font-family:var(--display);font-weight:600;line-height:1.16;margin:0;
  letter-spacing:-.012em;font-variation-settings:'opsz' 40}
h1{font-size:clamp(2.3rem,5.4vw,3.9rem);letter-spacing:-.022em}
h2{font-size:clamp(1.65rem,3.2vw,2.35rem);margin:0 0 18px}
h3{font-size:1.16rem;font-family:var(--body);font-weight:700;letter-spacing:-.005em;margin:0 0 8px}
p{margin:0 0 20px}
strong{font-weight:700}
em{font-style:italic}

.eyebrow{font-family:var(--data);font-size:11.5px;letter-spacing:.17em;text-transform:uppercase;
  color:var(--muted);margin:0 0 14px}
.lede{font-size:1.24rem;line-height:1.56;color:#2c3138;max-width:34ch}
.big{font-size:1.1rem}
.small{font-size:.93rem;color:var(--muted)}

/* ---------- masthead ---------- */
.masthead{border-bottom:1px solid var(--rule);background:rgba(251,250,248,.96);
  position:sticky;top:0;z-index:40;backdrop-filter:saturate(1.6) blur(7px)}
.masthead .wrap{display:flex;align-items:center;gap:24px;height:74px}
.brand{display:flex;align-items:baseline;gap:10px;border:0;flex-shrink:0}
.brand img{height:25px;width:auto;align-self:center}
.brand .tm{font-family:var(--data);font-size:9.5px;color:var(--muted);letter-spacing:.15em;
  text-transform:uppercase}
.nav{display:flex;margin-left:auto;align-items:center}
.nav a{font-family:var(--body);font-size:15px;font-weight:600;color:var(--ink);
  border:0;margin-left:26px;padding:5px 0;border-bottom:2px solid transparent}
.nav a:hover,.nav a[aria-current]{border-bottom-color:var(--gold)}
.menubtn{display:none;margin-left:auto;font-family:var(--body);font-weight:600;font-size:15px;
  background:none;border:1px solid var(--rule-strong);border-radius:4px;padding:7px 13px;
  color:var(--ink);cursor:pointer}

/* ---------- sections ---------- */
section{padding:74px 0;border-top:1px solid var(--rule)}
section:first-of-type{border-top:0}
.hero{padding:60px 0 66px;border-top:0}
.tint{background:var(--panel)}
.tint-warm{background:var(--panel-warm)}

/* ---------- population diagram (signature) ---------- */
/* A fixed illustration, not a control. No slider, no draggable "more is
   better" implication — just a field of 100 cells with the true, unsorted
   background rate highlighted. */
.field{display:grid;grid-template-columns:repeat(20,1fr);gap:5px;margin:0 0 16px;
  max-width:480px}
.field .cell{aspect-ratio:1;border-radius:50%;background:#d9d4c8}
.field .cell.on{background:var(--signal)}
.popfigure{max-width:480px}
.popcaption{font-family:var(--data);font-size:12.5px;color:var(--muted);
  display:flex;flex-wrap:wrap;align-items:center;gap:6px 16px;margin:0}
.swatch{display:inline-block;width:11px;height:11px;border-radius:50%;
  margin-right:7px;vertical-align:-1px}
.swatch-signal{background:var(--signal)}
.swatch-plain{background:#d9d4c8}

/* ---------- cards & structure ---------- */
.cols2{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.cols3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.card{background:var(--paper);border:1px solid var(--rule);border-radius:10px;padding:26px 24px}
.card .k{font-family:var(--data);font-size:10.5px;letter-spacing:.15em;text-transform:uppercase;
  color:var(--muted);margin:0 0 10px}
.card p:last-child{margin-bottom:0}
.tint .card{background:var(--paper)}

.note{border-left:3px solid var(--gate);background:var(--gate-soft);padding:20px 24px;
  border-radius:0 8px 8px 0;margin:26px 0}
.note .k{font-family:var(--body);font-weight:700;font-size:1rem;margin:0 0 8px}
.note p:last-child{margin-bottom:0}
.note.warn{border-left-color:var(--signal);background:var(--signal-soft)}
.note.gold{border-left-color:var(--gold);background:#fdf6e6}

/* numbered sequence — used only where order genuinely carries meaning */
.seq{list-style:none;counter-reset:s;padding:0;margin:30px 0 0}
.seq li{counter-increment:s;display:grid;grid-template-columns:52px 1fr;gap:20px;
  padding:22px 0;border-top:1px solid var(--rule)}
.seq li::before{content:counter(s);font-family:var(--data);font-size:14px;color:var(--gold-deep);
  font-weight:500;padding-top:3px}
.seq h3{margin-bottom:6px}
.seq p{margin:0}

.tbl{width:100%;border-collapse:collapse;margin:24px 0;font-size:.97rem}
.tbl th{font-family:var(--data);font-size:10.5px;letter-spacing:.13em;text-transform:uppercase;
  color:var(--muted);text-align:left;font-weight:500;padding:0 14px 11px 0;
  border-bottom:1px solid var(--rule-strong)}
.tbl td{padding:14px 14px 14px 0;border-bottom:1px solid var(--rule);vertical-align:top}
.tbl .num{font-family:var(--data);white-space:nowrap}
.tbl tr:last-child td{border-bottom:0}

.figure{margin:30px 0}
.figure img{border-radius:10px;width:100%}
.figure figcaption{font-size:.9rem;color:var(--muted);margin-top:11px;max-width:56ch}

.cta{display:inline-block;font-family:var(--body);font-weight:700;font-size:1rem;
  background:var(--ink);color:var(--paper);padding:14px 26px;border-radius:6px;border:0;
  margin-top:6px}
.cta:hover{background:var(--gate);color:var(--paper)}
.next{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px}
.next a{font-family:var(--body);font-weight:600;font-size:.97rem;border:1px solid var(--rule-strong);
  border-radius:999px;padding:11px 20px;color:var(--ink)}
.next a:hover{border-color:var(--gate);color:var(--gate)}

/* ---------- footer ---------- */
footer{background:var(--ink);color:#b7bbc0;padding:58px 0 34px;font-size:16px}
footer .wrap{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px}
footer h4{font-family:var(--data);font-size:11px;font-weight:500;letter-spacing:.15em;
  text-transform:uppercase;color:var(--paper);margin:0 0 13px}
footer a{color:#b7bbc0;border-bottom-color:rgba(255,255,255,.2)}
footer a:hover{color:var(--gold)}
footer p{margin:0 0 9px;max-width:42ch;font-size:16px}
.legallinks{font-family:var(--data);font-size:11.5px;color:#767a80;margin:0 0 14px;
  padding-top:40px;border-top:1px solid #2b2f36}
.legal{margin:0;padding-top:20px;font-family:var(--data);font-size:11.5px;line-height:1.72;
  color:#84888e;max-width:none}
.legal strong{color:#b7bbc0}

/* ---------- video grid ---------- */
.vidgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:44px 40px}
.vcard h3{margin:0 0 8px}
.vcard p.note{margin:0 0 18px;color:var(--muted);font-size:.98rem;background:none;
  border:0;padding:0;border-radius:0}
.shortcol{margin:0;max-width:330px}
.shortframe{position:relative;width:100%;aspect-ratio:9/16;background:var(--ink);
  border-radius:10px;overflow:hidden}
.shortframe > iframe{position:absolute;inset:0;width:100%;height:100%;border:0;display:block}
.shortcol figcaption{font-family:var(--data);font-size:11px;letter-spacing:.1em;
  color:var(--muted);margin-top:10px;display:flex;gap:0}
.shortcol figcaption span + span::before{content:" · "}
@media (max-width:760px){ .vidgrid{grid-template-columns:1fr} }

/* ---------- responsive ---------- */
@media (max-width:900px){
  .cols3{grid-template-columns:1fr 1fr}
  footer .wrap{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  body{font-size:18px}
  section{padding:52px 0}
  .menubtn{display:block}
  .nav{display:none;position:absolute;top:74px;left:0;right:0;background:var(--paper);
    border-bottom:1px solid var(--rule);flex-direction:column;align-items:flex-start;
    padding:14px 28px 20px}
  .nav.open{display:flex}
  .nav a{margin:0;padding:10px 0;font-size:17px}
  .cols2,.cols3{grid-template-columns:1fr}
  .field{grid-template-columns:repeat(10,1fr);max-width:280px}
  footer .wrap{grid-template-columns:1fr}
}

/* ---------- parent-company link + strip (2026-09-02) ---------- */
.nav a.parent{color:var(--gold-deep);font-weight:700;white-space:nowrap}
.nav a.parent span{font-size:12px}
.rlbar{background:var(--ink);border-top:1px solid var(--rule-strong)}
.rlbar .wrap{display:flex;align-items:center;justify-content:center;gap:.35em;flex-wrap:wrap;
  padding-top:18px;padding-bottom:18px;font-family:var(--body);font-size:15px;color:#d9d5cd}
.rlbar a{color:var(--gold);font-weight:700;text-decoration:underline;text-underline-offset:3px}
.rlbar a:hover{color:var(--gold-deep)}
@media (max-width:640px){.rlbar .wrap{font-size:14px}}