/* SI Glossary — light editorial design. No webfonts, no frameworks. */
:root{
  --paper:#FBFAF6;
  --ink:#1C1A16;
  --muted:#6E6A5F;
  --accent:#1E5B44;
  --accent-dark:#154433;
  --line:#E5E0D1;
  --card:#FFFFFF;
  --tint:#F2EFE4;
  --max:72rem;
  --measure:68ch;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:1.0625rem;
  line-height:1.65;
}
h1,h2,h3,.serif{
  font-family:Georgia,"Iowan Old Style","Times New Roman",serif;
  line-height:1.2;
  letter-spacing:-0.01em;
}
a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:2px}
a:hover{color:var(--accent-dark)}
img{max-width:100%;height:auto}

/* Header */
.site-header{border-bottom:1px solid var(--line);background:var(--paper);position:sticky;top:0;z-index:10}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.85rem 1.25rem}
.brand{display:flex;align-items:center;gap:.65rem;text-decoration:none;color:var(--ink)}
.brand .mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:2.1rem;height:2.1rem;border-radius:.45rem;
  background:var(--accent);color:#fff;font-weight:800;font-size:1rem;
  font-family:Georgia,serif;flex:none;
}
.brand .word{font-family:Georgia,serif;font-size:1.25rem;font-weight:700}
.brand .word em{font-style:normal;color:var(--muted);font-weight:400;font-size:.85rem;display:block;line-height:1.1;font-family:system-ui,sans-serif}
.nav{display:flex;gap:.25rem;flex-wrap:wrap}
.nav a{
  text-decoration:none;color:var(--ink);font-size:.95rem;font-weight:600;
  padding:.45rem .8rem;border-radius:.5rem;
}
.nav a:hover{background:var(--tint);color:var(--ink)}
.nav a[aria-current="page"]{background:var(--accent);color:#fff}

.wrap{max-width:var(--max);margin:0 auto;padding:0 1.25rem}
main .wrap{padding-top:2.5rem;padding-bottom:3.5rem}
.measure{max-width:var(--measure)}

/* Kickers & hero */
.kicker{
  font-size:.78rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent);margin:0 0 .75rem;
}
.hero h1{font-size:clamp(2.4rem,6vw,3.9rem);margin:0 0 1rem;font-weight:700}
.lede{font-size:1.25rem;line-height:1.6;color:#33302A;max-width:var(--measure)}
.updated{font-size:.85rem;color:var(--muted);margin-top:1.25rem}

/* Two-column changed/didn't */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:1.25rem;margin:2.5rem 0}
@media(max-width:640px){.duo{grid-template-columns:1fr}}
.panel{background:var(--card);border:1px solid var(--line);border-radius:.8rem;padding:1.5rem}
.panel h2{font-size:1.3rem;margin:0 0 .75rem}
.panel.changed{border-top:4px solid var(--accent)}
.panel.same{border-top:4px solid #B9B2A0}
.panel ul{margin:.5rem 0 0;padding-left:1.2rem}
.panel li{margin:.45rem 0}

/* Fact grid */
.facts{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin:2.5rem 0}
@media(max-width:900px){.facts{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.facts{grid-template-columns:1fr}}
.fact{background:var(--card);border:1px solid var(--line);border-radius:.8rem;padding:1.25rem}
.fact .n{font-family:Georgia,serif;font-size:1.9rem;font-weight:700;color:var(--accent);line-height:1.1}
.fact p{margin:.5rem 0 0;font-size:.93rem;color:#3A372F}

/* Quote */
.pullquote{
  border-left:4px solid var(--accent);background:var(--tint);
  margin:2.5rem 0;padding:1.4rem 1.6rem;border-radius:0 .8rem .8rem 0;
  font-family:Georgia,serif;font-size:1.25rem;line-height:1.5;
}
.pullquote cite{display:block;margin-top:.75rem;font-family:system-ui,sans-serif;font-size:.85rem;color:var(--muted);font-style:normal}

/* Cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem;margin:2.5rem 0}
@media(max-width:800px){.cards{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:.8rem;padding:1.5rem;text-decoration:none;color:var(--ink);display:block}
.card:hover{border-color:var(--accent)}
.card h3{margin:0 0 .5rem;font-size:1.25rem}
.card p{margin:0;font-size:.95rem;color:#3A372F}
.card .go{display:inline-block;margin-top:.9rem;font-weight:700;font-size:.9rem;color:var(--accent)}

/* Sections */
section.block{margin:3rem 0}
section.block h2{font-size:1.8rem;margin:0 0 1rem}
ol.keypoints{counter-reset:kp;margin:0;padding:0;list-style:none}
ol.keypoints li{counter-increment:kp;display:flex;gap:1rem;margin:1.1rem 0;max-width:var(--measure)}
ol.keypoints li::before{
  content:counter(kp);flex:none;width:2rem;height:2rem;border-radius:50%;
  background:var(--accent);color:#fff;font-weight:700;font-size:.95rem;
  display:inline-flex;align-items:center;justify-content:center;margin-top:.15rem;
}

/* Glossary */
.glossary-tools{margin:1.5rem 0;display:flex;gap:1rem;flex-wrap:wrap;align-items:center}
.glossary-tools input[type="search"]{
  font-size:1rem;padding:.65rem 1rem;border:1px solid var(--line);border-radius:.6rem;
  background:#fff;min-width:min(22rem,100%);
}
.alpha{display:flex;flex-wrap:wrap;gap:.3rem;margin:1rem 0 2rem}
.alpha a{
  text-decoration:none;color:var(--ink);font-weight:700;font-size:.85rem;
  min-width:2rem;height:2rem;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:.4rem;background:#fff;
}
.alpha a:hover{background:var(--tint)}
.gloss-letter{margin:2.5rem 0 0}
.gloss-letter > h2{font-size:1.6rem;border-bottom:2px solid var(--ink);padding-bottom:.4rem;margin-bottom:1.25rem}
.entry{background:var(--card);border:1px solid var(--line);border-radius:.7rem;padding:1.25rem 1.4rem;margin:0 0 1rem}
.entry h3{margin:0 0 .35rem;font-size:1.2rem}
.entry h3 .abbr{font-family:system-ui,sans-serif;font-size:.8rem;color:var(--muted);font-weight:600;margin-left:.5rem}
.entry .date{font-size:.8rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--accent);margin:0 0 .4rem}
.entry p{margin:.4rem 0;font-size:.98rem}
.entry p:last-child{margin-bottom:0}
.no-results{display:none;background:var(--tint);border-radius:.7rem;padding:1.5rem;margin:2rem 0}

/* Timeline */
.timeline{list-style:none;margin:2rem 0;padding:0;position:relative}
.timeline::before{content:"";position:absolute;left:.62rem;top:.4rem;bottom:.4rem;width:2px;background:var(--line)}
.timeline li{position:relative;padding:0 0 2.2rem 2.6rem;max-width:var(--measure)}
.timeline li:last-child{padding-bottom:0}
.timeline .dot{
  position:absolute;left:0;top:.35rem;width:1.35rem;height:1.35rem;border-radius:50%;
  background:var(--paper);border:3px solid var(--accent);
}
.timeline li.upcoming .dot{border-style:dashed;border-color:#B9B2A0}
.timeline .when{font-size:.8rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin:0}
.timeline li.upcoming .when{color:var(--muted)}
.timeline h3{margin:.25rem 0 .5rem;font-size:1.25rem}
.timeline p{margin:.4rem 0;font-size:.98rem}

/* FAQ */
details.faq{background:var(--card);border:1px solid var(--line);border-radius:.7rem;margin:0 0 .8rem;max-width:var(--measure)}
details.faq summary{
  cursor:pointer;padding:1.1rem 1.3rem;font-weight:700;font-size:1.05rem;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:1rem;
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";font-size:1.4rem;color:var(--accent);flex:none;font-weight:400}
details.faq[open] summary::after{content:"–"}
details.faq .a{padding:0 1.3rem 1.3rem;font-size:.98rem}
details.faq .a p{margin:.5rem 0}

/* Sources */
.sources{margin:3rem 0;max-width:var(--measure)}
.sources h2{font-size:1.4rem}
.sources ul{padding-left:1.2rem;font-size:.93rem;color:#3A372F}
.sources li{margin:.35rem 0}

/* Footer */
.site-footer{border-top:1px solid var(--line);margin-top:2rem;background:var(--tint)}
.site-footer .wrap{padding-top:2rem;padding-bottom:2.5rem;font-size:.88rem;color:var(--muted)}
.site-footer p{max-width:var(--measure);margin:.5rem 0}
.site-footer nav{display:flex;gap:1.25rem;flex-wrap:wrap;margin-bottom:1rem}
.site-footer nav a{color:var(--ink);font-weight:600;text-decoration:none}
.site-footer nav a:hover{color:var(--accent)}