:root{
  --bg:#F6F3EC; --surface:#FFFFFF; --ink:#12213A; --muted:#5B6781; --line:#E1DCCF;
  --accent:#FFD15C; --accent-ink:#8A6200; --accent-soft:#FFF3CC; --night:#12213A; --night-ink:#F4EFE3;
  --warn:#A5520B; --warn-soft:#FBEBDD;
}
@media (prefers-color-scheme:dark){
  :root{color-scheme:dark;--bg:#0E1A2E;--surface:#16243D;--ink:#F4EFE3;--muted:#A9B6CC;--line:#27395A;--accent-ink:#FFD15C;--accent-soft:#3A3318;--night:#0A1424;--warn:#F0A060;--warn-soft:#3A2616}
}
*{box-sizing:border-box}
html{padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Geologica",system-ui,-apple-system,"Segoe UI",sans-serif;font-size:17px;line-height:1.65}
.wrap{max-width:760px;margin:0 auto;padding-inline:16px;padding-block:28px 64px}
a{color:var(--ink);text-decoration-color:var(--accent);text-decoration-thickness:2px;text-underline-offset:3px}
a:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.top{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:28px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:20px;text-decoration:none}
.crumbs{font-size:14px;color:var(--muted)}
.crumbs a{color:var(--muted)}
h1{font-weight:800;font-size:clamp(28px,5vw,40px);line-height:1.15;margin:0 0 12px;text-wrap:balance}
h2{font-weight:700;font-size:23px;line-height:1.3;margin:36px 0 10px;text-wrap:balance}
h3{font-weight:600;font-size:18px;margin:22px 0 6px}
p,ul,ol{margin:0 0 14px;max-width:66ch}
ul,ol{padding-left:22px}
li{margin-bottom:6px}
.lead{font-size:19px;color:var(--muted)}
.meta{font-size:14px;color:var(--muted);margin-bottom:24px}
.tbl{overflow-x:auto;margin:14px 0 20px;border:1px solid var(--line);border-radius:10px;background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:15px;min-width:560px}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:12px;letter-spacing:.05em;text-transform:uppercase;color:var(--muted);font-weight:600}
tr:last-child td{border-bottom:0}
.note{background:var(--accent-soft);border-radius:10px;padding:14px 16px;margin:16px 0}
.note.warn{background:var(--warn-soft)}
.note p:last-child{margin:0}
.formula{font-family:"JetBrains Mono",ui-monospace,Consolas,monospace;font-size:15px;background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:10px 14px;margin:10px 0 16px;overflow-x:auto}
.cta{margin-top:40px;background:var(--night);color:var(--night-ink);border-radius:14px;padding:22px 24px;display:grid;gap:10px}
.cta h2{margin:0;color:var(--night-ink);font-size:21px}
.cta p{margin:0;color:#A9B6CC}
.cta a.btn{justify-self:start;background:var(--accent);color:#12213A;text-decoration:none;font-weight:700;padding:10px 18px;border-radius:8px}
.cards{display:grid;gap:12px;margin-top:18px}
.card{display:block;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 18px;text-decoration:none}
.card b{display:block;font-size:18px;margin-bottom:4px}
.card span{color:var(--muted);font-size:15px}
.foot{margin-top:40px;font-size:13px;color:var(--muted);display:flex;gap:16px;flex-wrap:wrap}
.foot a{color:var(--muted)}