:root {
  --paper:#FBFCFD; --surface:#FFFFFF; --surface-2:#F1F4F6; --ink:#17222E; --body:#33414E;
  --muted:#63757F; --line:#DBE3E7; --accent:#0F766E; --accent-strong:#0B5952; --accent-soft:#E4F0EE;
  --good:#1F7A43; --good-soft:#E3F2E9; --amber:#8A5D00;
  --serif:"Charter","Iowan Old Style","Palatino Linotype",Palatino,Georgia,serif;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,"SF Mono","Cascadia Code",Menlo,Consolas,monospace;
}
@media (prefers-color-scheme: dark){
  :root{--paper:#0E141B;--surface:#121A22;--surface-2:#17212B;--ink:#EAF1F5;--body:#B6C3CC;
    --muted:#7E8F99;--line:#24303B;--accent:#4FD1C5;--accent-strong:#82E2D8;--accent-soft:#10302D;
    --good:#57C384;--good-soft:#122A1C;--amber:#E0A93B;}
}
* { box-sizing: border-box; }
body { margin: 0; }
.pg { background: var(--paper); color: var(--body); font-family: var(--sans); font-size: 1.0625rem; line-height: 1.72; -webkit-font-smoothing: antialiased; min-height: 100%; padding-bottom: 4rem; }
.pg ::selection { background: var(--accent-soft); }
.wrap { max-width: 42rem; margin: 0 auto; padding: 0 1.5rem; }

.masthead { border-bottom: 1px solid var(--line); background: var(--surface); }
.masthead__inner { max-width: 42rem; margin: 0 auto; padding: 1rem 1.5rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { font-family: var(--serif); font-size: 1.1rem; color: var(--ink); text-decoration: none; }
.brand b { font-weight: 600; } .brand .dot { color: var(--accent); font-weight: 700; }
.back { font-size: 0.85rem; color: var(--accent); text-decoration: none; }
.back:hover { text-decoration: underline; }

.eyebrow { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent); margin: 2.4rem 0 0.9rem; display: flex; align-items: center; gap: 0.55rem; }
.eyebrow::after { content:""; flex:1; height:1px; background: linear-gradient(90deg,var(--line),transparent); }
h1 { font-family: var(--serif); color: var(--ink); font-weight: 600; font-size: clamp(1.8rem,5vw,2.4rem); line-height: 1.14; letter-spacing: -0.018em; text-wrap: balance; margin: 0 0 1rem; }
.standfirst { font-family: var(--serif); font-size: 1.18rem; line-height: 1.5; color: var(--body); margin: 0 0 1.4rem; text-wrap: pretty; }

.tags { display: flex; flex-wrap: wrap; gap: 0.5rem 0.6rem; align-items: center; padding: 0.2rem 0 1.3rem; border-bottom: 1px solid var(--line); margin-bottom: 1.6rem; }
.tag { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.tag--cpd { color: var(--accent-strong); background: var(--accent-soft); padding: 0.2rem 0.55rem; border-radius: 3px; }

.source { background: var(--surface-2); border: 1px solid var(--line); border-radius: 6px; padding: 1.05rem 1.15rem; margin: 0 0 2rem; }
.source__label { font-family: var(--mono); font-size: 0.64rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); margin-bottom: 0.5rem; }
.source__title { font-family: var(--serif); color: var(--ink); font-size: 1.05rem; line-height: 1.35; margin: 0 0 0.35rem; }
.source__cite { font-size: 0.9rem; color: var(--muted); margin: 0 0 0.85rem; }
.source__cite a { color: var(--accent); text-decoration: none; } .source__cite a:hover { text-decoration: underline; }
.gate { display: inline-flex; align-items: center; gap: 0.5rem; background: var(--good-soft); color: var(--good); font-family: var(--mono); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.03em; padding: 0.38rem 0.7rem; border-radius: 100px; }
.gate svg { width: 0.95rem; height: 0.95rem; flex: none; }

.prose h2 { font-family: var(--serif); color: var(--ink); font-weight: 600; font-size: 1.3rem; letter-spacing: -0.01em; margin: 2.2rem 0 0.7rem; text-wrap: balance; }
.prose p { margin: 0 0 1.15rem; } .prose strong { color: var(--ink); font-weight: 600; }
.findings { list-style: none; margin: 0 0 1.3rem; padding: 0; display: grid; gap: 0.7rem; }
.findings li { position: relative; padding-left: 1.6rem; line-height: 1.6; }
.findings li::before { content:""; position: absolute; left: 0.15rem; top: 0.62em; width: 0.5rem; height: 0.5rem; border: 1.5px solid var(--accent); border-radius: 50%; }
.findings li strong { color: var(--ink); }
.callout { background: var(--surface); border: 1px solid var(--line); border-radius: 6px; padding: 1rem 1.15rem; margin: 1.6rem 0 1.2rem; font-size: 0.98rem; }
.callout .k { font-family: var(--mono); font-size: 0.64rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--amber); display: block; margin-bottom: 0.4rem; }
.callout p { margin: 0; color: var(--body); }
.gene { font-family: var(--mono); font-size: 0.85em; color: var(--accent-strong); font-style: normal; }

.cpd { margin-top: 2.5rem; border-top: 2px solid var(--ink); padding-top: 1.4rem; }
.cpd h2 { font-family: var(--serif); color: var(--ink); font-weight: 600; font-size: 1.25rem; margin: 0 0 1rem; }
.cpd__grid { display: grid; gap: 0.9rem; }
@media (min-width: 620px){ .cpd__grid { grid-template-columns: 1fr 1fr; } }
.cpd__card { background: var(--surface-2); border: 1px solid var(--line); border-radius: 6px; padding: 1.05rem 1.1rem; }
.cpd__card.span { grid-column: 1 / -1; }
.cpd__card h3 { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent-strong); margin: 0 0 0.7rem; }
.cpd__card ul { margin: 0; padding-left: 1.05rem; } .cpd__card li { margin-bottom: 0.45rem; line-height: 1.55; font-size: 0.96rem; }
.cpd__card .q { font-style: italic; color: var(--body); font-family: var(--serif); font-size: 1.02rem; line-height: 1.5; margin: 0; }

.foot { margin-top: 2.6rem; padding-top: 1.3rem; border-top: 1px solid var(--line); font-size: 0.84rem; color: var(--muted); }
.foot a { color: var(--accent); text-decoration: none; }