:root{
  --bg: oklch(15.5% 0.014 162);
  --surface: oklch(19% 0.016 162);
  --ink: oklch(95% 0.012 156);
  --ink-soft: oklch(82% 0.016 158);
  --muted: oklch(61% 0.018 158);
  --line: oklch(30% 0.02 162);
  --line-strong: oklch(40% 0.025 162);
  --accent: oklch(74% 0.15 158);
  --accent-ink: oklch(82% 0.12 158);
  --on-accent: oklch(17% 0.03 162);
  --container: 760px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size:17px; line-height:1.7; -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}
a{color:var(--accent-ink); text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--container); margin:0 auto; padding:0 24px}
header{position:sticky; top:0; z-index:50; backdrop-filter:blur(10px) saturate(1.3); background:oklch(15.5% 0.014 162 / .82); border-bottom:1px solid var(--line)}
.nav{display:flex; align-items:center; justify-content:space-between; height:64px; max-width:1080px; margin:0 auto; padding:0 24px}
.brand{display:flex; align-items:center; gap:.55em; font-weight:700; color:var(--ink)}
.brand svg{display:block}
.btn{display:inline-flex; align-items:center; gap:.5em; font-weight:600; font-size:.95rem;
  padding:.7em 1.2em; border-radius:10px; background:var(--accent); color:var(--on-accent); transition:transform .2s, background .2s}
.btn:hover{background:oklch(68% 0.16 158); transform:translateY(-1px); text-decoration:none}
main{padding:clamp(2.5rem,6vw,4.5rem) 0 1rem}
.crumbs{font-size:.85rem; color:var(--muted); margin-bottom:1.4rem}
.crumbs a{color:var(--muted)}
h1{font-size:clamp(2rem,4.4vw,3rem); font-weight:800; line-height:1.1; letter-spacing:-.02em; margin:0 0 1rem}
h2{font-size:clamp(1.4rem,2.6vw,1.8rem); font-weight:700; letter-spacing:-.015em; margin:2.6rem 0 .8rem; line-height:1.2}
h3{font-size:1.15rem; font-weight:700; margin:1.8rem 0 .5rem}
p{margin:0 0 1.1rem}
.dek{font-size:1.18rem; color:var(--ink-soft); margin:0 0 1.6rem}
.meta{font-size:.85rem; color:var(--muted); margin:0 0 2.4rem; padding-bottom:1.6rem; border-bottom:1px solid var(--line)}
ul,ol{margin:0 0 1.3rem; padding-left:1.3rem}
li{margin:.45rem 0}
strong{color:var(--ink)}
code{background:var(--surface); border:1px solid var(--line); border-radius:6px; padding:.12em .45em; font-size:.92em}
blockquote{margin:1.6rem 0; padding:.4rem 0 .4rem 1.2rem; border-left:3px solid var(--accent); color:var(--ink-soft); font-style:italic}
.callout{background:var(--surface); border:1px solid var(--line); border-radius:14px; padding:1.4rem 1.6rem; margin:2rem 0}
.callout p:last-child{margin-bottom:0}
.cta-box{background:var(--surface); border:1px solid var(--accent); border-radius:16px; padding:1.8rem; margin:3rem 0 1rem; text-align:center}
.cta-box h2{margin:0 0 .6rem}
.cta-box p{color:var(--ink-soft); max-width:48ch; margin:0 auto 1.4rem}
.related{margin:3rem 0 0; padding-top:1.8rem; border-top:1px solid var(--line)}
.related h2{margin-top:0; font-size:1.1rem}
.related ul{list-style:none; padding:0}
.related li{margin:.5rem 0}
footer{margin-top:3rem; padding:2.5rem 0; border-top:1px solid var(--line); color:var(--muted); font-size:.9rem}
.foot{display:flex; justify-content:space-between; gap:1.5rem; flex-wrap:wrap; align-items:center; max-width:1080px; margin:0 auto; padding:0 24px}
.foot a{color:var(--ink-soft)}
.foot-links{display:flex; gap:1.4rem; flex-wrap:wrap}