:root{
  --ink:#1B2433; --ink-soft:#4A5568; --paper:#FFFFFF; --desk:#E9EDF2; --line:#CDD5DF;
  --hl:#FFE45C; --hl-ink:#1B2433; --stamp:#C8382C; --go:#16706A; --go-bg:#E3F3F1; --focus:#2F6FEB;
  --display:"Bricolage Grotesque", "Avenir Next", "Segoe UI", system-ui, sans-serif;
  --body:"Atkinson Hyperlegible", "Segoe UI", system-ui, -apple-system, sans-serif;
  color-scheme:light; box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme: dark){
  :root{ --ink:#E8ECF2; --ink-soft:#A9B4C3; --paper:#1C2330; --desk:#121821; --line:#324054;
    --hl:#E8CF3A; --hl-ink:#151A22; --stamp:#FF7A6E; --go:#5CC9BE; --go-bg:#173230; --focus:#7FA8FF; color-scheme:dark; }
}
*,*::before,*::after{box-sizing:inherit}
body{margin:0;background:var(--desk);color:var(--ink);font-family:var(--body);font-size:18px;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--ink);text-decoration-thickness:2px;text-underline-offset:3px}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:6px}
.wrap{max-width:720px;margin:0 auto;padding:20px 16px 56px}
header.top{display:flex;align-items:center;gap:10px;padding:4px 2px 22px}
.home{display:flex;align-items:center;gap:10px;text-decoration:none}
.mark{width:34px;height:42px;background:var(--paper);border:2px solid var(--ink);border-radius:3px 12px 3px 3px;position:relative;flex:none}
.mark::before,.mark::after{content:"";position:absolute;left:6px;right:6px;height:3px;background:var(--line)}
.mark::before{top:11px}.mark::after{top:22px;background:var(--hl);height:6px;right:4px}
.brand{font-family:var(--display);font-weight:800;font-size:20px;letter-spacing:-.01em;white-space:nowrap}
.top-nav a{white-space:nowrap}
@media (max-width:420px){.brand{font-size:18px}.top-nav a{padding:8px 6px}.top-nav a:first-child{display:none}}
.top-nav{margin-left:auto;display:flex;gap:4px}
.top-nav a{font-weight:700;text-decoration:none;padding:8px 10px;border-radius:8px;font-size:15px}
.top-nav a:hover{background:var(--paper)}
.crumbs{font-size:15px;color:var(--ink-soft);margin:0 0 8px}
.crumbs a{color:var(--ink-soft)}
article,.page{background:var(--paper);border:1px solid var(--line);border-radius:4px 22px 4px 4px;padding:26px 20px;box-shadow:0 14px 30px -22px rgba(20,30,50,.45)}
@media (min-width:600px){article,.page{padding:36px 40px}}
h1{font-family:var(--display);font-weight:800;font-size:clamp(30px,7vw,44px);line-height:1.08;letter-spacing:-.02em;margin:0 0 14px}
h2{font-family:var(--display);font-weight:700;font-size:24px;line-height:1.2;margin:34px 0 10px}
h3{font-family:var(--display);font-weight:700;font-size:19px;margin:24px 0 6px}
p{margin:0 0 14px;max-width:65ch}
.lede{font-size:20px;color:var(--ink-soft)}
ul,ol{padding-left:1.3em;margin:0 0 16px}
li{padding:3px 0;max-width:62ch}
.meta{font-size:15px;color:var(--ink-soft);margin:0 0 20px}
.callout{background:var(--desk);border-radius:12px;padding:16px 18px;margin:20px 0}
.callout p:last-child{margin:0}
.template{white-space:pre-wrap;background:var(--desk);border-radius:12px;padding:16px 18px;font-size:16px;line-height:1.55;margin:12px 0 20px}
.cta{background:var(--ink);color:var(--paper);border-radius:16px;padding:22px 20px;margin:28px 0}
.cta h2{margin:0 0 6px;color:var(--paper)}
.cta p{color:var(--paper);opacity:.85}
.cta a{display:inline-block;background:var(--hl);color:var(--hl-ink);font-weight:700;text-decoration:none;padding:12px 20px;border-radius:12px;margin-top:4px}
.ad-slot{margin:24px 0}
.ad-label{font-size:12px;color:var(--ink-soft);margin:0 0 4px;text-align:center}
.related{list-style:none;padding:0}
.related li{border-top:1px solid var(--line);padding:0}
.related li:first-child{border-top:0}
.related a{display:block;padding:10px 0;font-weight:700;text-decoration:none}
.related a:hover{text-decoration:underline}
.cards{list-style:none;padding:0;display:grid;gap:12px}
.cards a{display:block;background:var(--desk);border-radius:12px;padding:16px 18px;text-decoration:none}
.cards a:hover{outline:2px solid var(--ink)}
.cards b{display:block;font-family:var(--display);font-size:19px;line-height:1.25;margin-bottom:4px}
.cards span{color:var(--ink-soft);font-size:16px}
footer{color:var(--ink-soft);font-size:14px;padding:20px 4px}
footer nav{display:flex;flex-wrap:wrap;gap:6px 16px;margin:0 0 12px}
footer nav a{color:var(--ink);font-weight:700}
footer p{margin:0 0 8px}
.glossary{margin:10px 0 0}
.glossary dt{font-family:var(--display);font-weight:700;font-size:19px;margin:22px 0 4px;scroll-margin-top:16px}
.glossary dd{margin:0;color:var(--ink-soft);max-width:65ch}
.glossary dt:target{background:linear-gradient(transparent 55%, var(--hl) 55%)}
time{white-space:nowrap}

nav.langs{display:flex;flex-wrap:wrap;gap:6px 14px;margin:0 0 10px}
nav.langs a{font-weight:400}
nav.langs a[aria-current]{font-weight:700;text-decoration:none}
[dir="rtl"] ul,[dir="rtl"] ol{padding-left:0;padding-right:1.3em}
[dir="rtl"] .related,[dir="rtl"] .cards{padding-right:0}

/* ---- visual refresh (October 2026), matches the app ---- */
:root{--shadow:0 1px 2px rgba(20,30,50,.06),0 12px 30px -20px rgba(20,30,50,.45)}
@media (prefers-color-scheme: dark){:root{--shadow:0 1px 2px rgba(0,0,0,.4),0 12px 30px -18px rgba(0,0,0,.8)}}
body{background:radial-gradient(900px 420px at 50% -160px, color-mix(in srgb, var(--hl) 26%, transparent), transparent 70%) no-repeat, var(--desk)}
article,.page{box-shadow:var(--shadow);border-color:color-mix(in srgb, var(--line) 70%, transparent)}
.top-nav a:last-child{background:var(--ink);color:var(--paper);border-radius:999px;padding:8px 16px}
.top-nav a:last-child:hover{background:var(--ink);opacity:.9}
.callout{border-radius:16px}
.template{border-radius:16px;border:1px solid var(--line);background:color-mix(in srgb, var(--desk) 55%, var(--paper))}
.cta{border-radius:20px;padding:24px 22px}
.cta a{border-radius:14px;padding:13px 22px}
.cards a{border-radius:16px;border:1.5px solid transparent;transition:transform .12s,border-color .12s,box-shadow .12s}
.cards a:hover{outline:0;border-color:var(--ink);transform:translateY(-1px);box-shadow:var(--shadow)}
footer{border-top:1px solid var(--line);margin-top:20px;padding-top:20px}
footer nav:not(.langs){display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:2px 16px;margin-bottom:16px}
@media (min-width:560px){footer nav:not(.langs){grid-template-columns:repeat(3,minmax(0,1fr))}}
footer nav:not(.langs) a{font-weight:600;text-decoration:none;padding:5px 0}
footer nav:not(.langs) a:hover{text-decoration:underline}
@media (prefers-reduced-motion: reduce){.cards a:hover{transform:none}}