/* Shared styling for the research explainers under /research/.
   Paper-and-ink palette with a plant-green accent; theme-aware. */
:root{
  --ground:#F5F4EE;
  --panel:#FCFBF7;
  --panel-2:#ECEBE2;
  --line:#D9D6C8;
  --line-2:#BFBBA8;
  --ink:#191C15;
  --ink-2:#42463C;
  --ink-3:#71766A;
  --vine:#2E5F33;
  --vine-soft:#E0EADB;
  --serif:Georgia,"Iowan Old Style","Times New Roman",serif;
  --sans:system-ui,-apple-system,"Segoe UI",Helvetica,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --ground:#11140E; --panel:#1A1E15; --panel-2:#22271C;
    --line:#333A2B; --line-2:#4A5240;
    --ink:#E8ECE0; --ink-2:#BEC5B2; --ink-3:#8A917D;
    --vine:#8CC084; --vine-soft:#1E2B1B;
  }
}
:root[data-theme="dark"]{
  --ground:#11140E; --panel:#1A1E15; --panel-2:#22271C;
  --line:#333A2B; --line-2:#4A5240;
  --ink:#E8ECE0; --ink-2:#BEC5B2; --ink-3:#8A917D;
  --vine:#8CC084; --vine-soft:#1E2B1B;
}

*{box-sizing:border-box}
body{
  margin:0;background:var(--ground);color:var(--ink);
  font-family:var(--sans);font-size:16.5px;line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
.wrap{max-width:720px;margin:0 auto;padding:0 24px}
h1,h2,h3{font-family:var(--serif);font-weight:600;line-height:1.2;margin:0;text-wrap:balance}
a{color:var(--vine)}
em.gene{font-style:italic}
.label{font-family:var(--mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3)}

/* site nav, matching the other guides */
.a-nav{border-bottom:1px solid var(--line);background:var(--panel)}
.a-nav__row{max-width:720px;margin:0 auto;padding:0 24px;min-height:62px;
  display:flex;align-items:center;justify-content:space-between;gap:22px}
.a-brand{font-family:var(--serif);font-weight:600;color:var(--ink);text-decoration:none}
.a-nav__links{display:flex;gap:22px;align-items:center;flex-wrap:wrap;justify-content:flex-end}
.a-nav__links a{font-size:.85rem;color:var(--ink-2);text-decoration:none;transition:color .2s}
.a-nav__links a:hover{color:var(--ink)}
@media (max-width:640px){
  .a-nav__row{height:auto;padding-block:10px;flex-wrap:wrap;row-gap:4px}
  .a-nav__links{gap:14px}
  .a-nav__links a{font-size:.8rem}
}

header.top{padding:52px 0 8px}
header.top h1{font-size:clamp(1.9rem,4.6vw,2.7rem);margin:14px 0 18px}
header.top .lead{color:var(--ink-2);font-size:1.08rem;max-width:60ch;margin:0 0 10px}
.meta{display:flex;gap:16px;flex-wrap:wrap;font-family:var(--mono);font-size:.78rem;color:var(--ink-3);margin-top:14px}

section{padding:34px 0 6px}
section h2{font-size:1.45rem;margin:0 0 16px}
section h3{font-size:1.08rem;margin:24px 0 10px}
p{margin:0 0 16px;max-width:64ch}
p.aside{color:var(--ink-3);font-size:.92rem;border-left:3px solid var(--line-2);padding-left:12px}
ul.plain{margin:0 0 16px;padding-left:1.15em;max-width:62ch}
ul.plain li{margin-bottom:8px}

figure{margin:24px 0 26px}
figure svg{max-width:100%;height:auto;display:block}
figcaption{font-size:.88rem;color:var(--ink-3);margin-top:10px;line-height:1.55;max-width:62ch}

.keyline{border-left:3px solid var(--vine);background:var(--vine-soft);padding:12px 16px;
  border-radius:0 4px 4px 0;margin:0 0 18px;max-width:66ch}
.keyline p{margin:0;font-size:.97rem}

.paper{background:var(--panel);border:1px solid var(--line);border-left:2px solid var(--vine);
  border-radius:0 4px 4px 0;padding:16px 20px;margin:8px 0 0;max-width:66ch}
.paper .label{display:block;margin-bottom:8px}
.paper p{font-size:.93rem;color:var(--ink-2);margin:0 0 8px}
.paper p:last-child{margin-bottom:0}

footer{padding:36px 0 60px;color:var(--ink-3);font-size:.9rem;border-top:1px solid var(--line);margin-top:40px}
footer p{max-width:64ch}
footer a{color:var(--vine)}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}