/* ============================================================
   UNI, shared site styles (nav, footer, theme tokens)
   Calm light theme, consistent with the Precision Lab.
   ============================================================ */

:root{
  --bg:#f3efe7;
  --panel:#ffffff;
  --panel2:#faf8f2;
  --edge:#e7e2d5;
  --edge2:#d3ccba;
  --ink:#2b2824;
  --text:#423f38;
  --muted:#8b8678;
  --accent:#3a6ea8;
  --accent-soft:#e9f0f8;
  --accent2:#388f7e;
  --good:#4e9759;
  --warn:#bd6840;
  --hypothesis:#9c7a38;
  --hero:#0b1020;
  --hero2:#131a33;
  --shadow:0 1px 2px rgba(45,38,26,.05),0 5px 18px rgba(45,38,26,.07);
  --shadow-lg:0 16px 48px rgba(45,38,26,.20);
  --r:16px;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--text);
  font-size:15px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent)}
img{max-width:100%;display:block}

.wrap{max-width:1140px;margin:0 auto;padding:0 24px}
.measure{max-width:720px}

/* ---- SITE NAV ---------------------------------------------- */
.site-nav{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(140%) blur(8px);
  -webkit-backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--edge);
}
.site-nav-inner{
  max-width:1140px;margin:0 auto;padding:11px 24px;
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
}
.site-brand{
  display:flex;align-items:center;gap:9px;
  text-decoration:none;color:var(--ink);font-weight:700;
  letter-spacing:-.01em;font-size:15px;
}
.site-brand .mark{
  width:26px;height:26px;border-radius:7px;flex-shrink:0;
  background:linear-gradient(135deg,#3a6ea8,#388f7e 55%,#caa64a);
  color:#fff;font-size:11px;font-weight:800;letter-spacing:.02em;
  display:flex;align-items:center;justify-content:center;
}
.site-brand .full{color:var(--muted);font-weight:500}
.site-nav-links{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.site-nav-links a{
  text-decoration:none;color:var(--text);font-size:13.5px;font-weight:600;
  padding:7px 12px;border-radius:8px;transition:background .14s,color .14s;
}
.site-nav-links a:hover{background:var(--accent-soft);color:var(--accent)}
.site-nav-links a.current{color:var(--accent);background:var(--accent-soft)}
@media(max-width:560px){
  .site-nav-inner{padding:9px 16px;gap:10px}
  .site-brand .full{display:none}
}

/* ---- SITE FOOTER ------------------------------------------- */
.site-footer{
  background:var(--hero);
  color:#c7cbd9;
  margin-top:64px;
  padding:46px 0 30px;
}
.site-footer .wrap{display:flex;gap:40px;flex-wrap:wrap}
.site-footer h4{
  font-size:11px;letter-spacing:.1em;text-transform:uppercase;
  color:#7f87a3;font-weight:700;margin-bottom:12px;
}
.foot-col{min-width:170px}
.foot-col.intro{flex:1;min-width:240px}
.foot-col.intro p{font-size:13px;line-height:1.65;color:#9aa0b8;max-width:340px}
.foot-brand{font-size:16px;font-weight:700;color:#fff;margin-bottom:8px;letter-spacing:-.01em}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:8px}
.site-footer a{
  color:#c7cbd9;text-decoration:none;font-size:13px;
  border-bottom:1px solid transparent;transition:color .14s,border-color .14s;
}
.site-footer a:hover{color:#fff;border-color:#4a5270}
.foot-base{
  max-width:1140px;margin:34px auto 0;padding:20px 24px 0;
  border-top:1px solid #222a44;
  font-size:11.5px;color:#6f7795;line-height:1.7;
}
.foot-base .colophon{color:#9aa0b8}
@media(max-width:560px){
  .site-footer .wrap{gap:26px}
}

/* ---- SHARED PAGE PRIMITIVES -------------------------------- */
.section{padding:54px 0}
.section-tag{
  font-size:11px;letter-spacing:.13em;text-transform:uppercase;
  color:var(--accent2);font-weight:700;margin-bottom:12px;
}
h1,h2,h3{color:var(--ink);letter-spacing:-.015em;line-height:1.25}
h2{font-size:26px;font-weight:700;margin-bottom:14px}
h3{font-size:18px;font-weight:700;margin-bottom:8px}
p{margin-bottom:14px}
p:last-child{margin-bottom:0}

.card{
  background:var(--panel);border:1px solid var(--edge);
  border-radius:var(--r);padding:22px 24px;box-shadow:var(--shadow);
}
.btn{
  display:inline-block;background:var(--accent);color:#fff;text-decoration:none;
  font-weight:600;font-size:14.5px;padding:13px 24px;border-radius:11px;
  box-shadow:0 4px 13px rgba(58,110,168,.28);
  transition:transform .12s,filter .12s;
}
.btn:hover{transform:translateY(-2px);filter:brightness(1.05)}
.btn.ghost{
  background:var(--panel);color:var(--accent);
  border:1px solid var(--edge2);box-shadow:none;
}
.tag{
  display:inline-block;padding:3px 9px;border-radius:6px;font-size:10.5px;
  letter-spacing:.05em;text-transform:uppercase;font-weight:700;
  background:rgba(156,122,56,.12);color:var(--hypothesis);
  border:1px solid rgba(156,122,56,.30);
}