:root{
  color-scheme:light dark;
  --bg:#FFFFFF;
  --surface:#F3F5F4;
  --text:#15181C;
  --muted:#59616B;
  --line:#E2E6E4;
  --accent:#0A6E5C;
  --accent-soft:#E3F2EE;
  --measure:680px;
  --sans:-apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --display:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#0F1214;
    --surface:#171B1E;
    --text:#E9EDEB;
    --muted:#A3ACB4;
    --line:#262C30;
    --accent:#5BD0B3;
    --accent-soft:#16302A;
  }
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:24px}
body{margin:0;background:var(--bg);color:var(--text);font:400 17px/1.65 var(--sans);-webkit-font-smoothing:antialiased;overflow-wrap:break-word}
::selection{background:var(--accent);color:var(--bg)}
a{color:var(--accent);text-underline-offset:.2em;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:3px}

.wrap{max-width:calc(var(--measure) + 48px);margin:0 auto;padding:0 24px}

.top{border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;font:700 1.02rem/1 var(--display);letter-spacing:-.01em}
.brand svg{width:26px;height:26px;flex:none}
.top nav{display:flex;gap:20px}
.top nav a{color:var(--muted);text-decoration:none;font-size:.95rem;padding:10px 0}
.top nav a:hover,.top nav a[aria-current="page"]{color:var(--text)}
.top nav a[aria-current="page"]{box-shadow:inset 0 -2px 0 var(--accent)}

main{padding:48px 0 72px}
h1{margin:0 0 8px;font:700 clamp(2rem,6vw,2.6rem)/1.1 var(--display);letter-spacing:-.025em;text-wrap:balance}
.updated{margin:0 0 32px;color:var(--muted);font-size:.95rem}
.lead{margin:0 0 32px;font-size:1.12rem}

h2,h3{position:relative;font-family:var(--display);letter-spacing:-.015em;text-wrap:balance}
h2{margin:48px 0 12px;font-size:1.4rem;line-height:1.25;font-weight:700}
h3{margin:32px 0 8px;font-size:1.12rem;line-height:1.35;font-weight:650}
h2 + h3{margin-top:16px}
.anchor{position:absolute;left:-28px;top:50%;transform:translateY(-50%);display:flex;align-items:center;justify-content:center;width:24px;height:24px;color:var(--muted);opacity:0;transition:opacity .15s}
.anchor svg{width:16px;height:16px}
h2:hover .anchor,h3:hover .anchor,.anchor:focus-visible{opacity:1}
@media (hover:none),(max-width:760px){
  .anchor{position:static;transform:none;display:inline-flex;vertical-align:middle;margin-left:6px;opacity:.55;width:20px;height:20px}
}

p{margin:0 0 14px}
ul{margin:0 0 14px;padding-left:1.25em}
li{margin:4px 0}
li::marker{color:var(--accent)}
strong{font-weight:650}

.note{margin:24px 0;padding:16px 18px;background:var(--accent-soft);border-radius:10px}
.note p:last-child{margin:0}

.path{white-space:nowrap}

footer{border-top:1px solid var(--line);padding:24px 0 40px;color:var(--muted);font-size:.92rem}
footer .wrap{display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between}
footer nav{display:flex;gap:20px}
footer a{color:var(--muted)}
footer a:hover{color:var(--text)}

@media (max-width:480px){
  body{font-size:16px}
  main{padding:32px 0 56px}
  .top nav{gap:16px}
  .path{white-space:normal}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .anchor{transition:none}
}