:root{--bg:#fff;--bg2:#f5f5f7;--fg:#1d1d1f;--fg2:#6e6e73;--line:#d2d2d7;--accent:#0071e3;--link:#0066cc;--font:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text",Inter,"Helvetica Neue",Helvetica,Arial,sans-serif}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--font);font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:var(--link);text-decoration:none}a:hover{text-decoration:underline}
h1,h2,h3{margin:0;font-weight:700;letter-spacing:-.02em;line-height:1.1}
p{margin:0}
svg{display:block}
#nav{position:sticky;top:0;height:52px;display:flex;align-items:center;background:rgba(255,255,255,.82);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid rgba(0,0,0,.06);z-index:10}
#nav .wide{width:100%;max-width:1200px;margin:0 auto;padding:0 22px;display:flex;align-items:center;justify-content:space-between}
#nav .brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:17px;color:var(--fg)}
#nav .brand svg{width:22px;height:22px}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#fff;border-radius:980px;padding:8px 16px;font-size:14px;font-weight:500;white-space:nowrap}
.btn:hover{background:#0077ed;text-decoration:none}
.btn .tag{background:rgba(255,255,255,.22);border-radius:980px;padding:2px 9px;font-size:.86em;font-weight:600}
main{max-width:720px;margin:0 auto;padding:72px 22px 96px}
.eyebrow{font-size:14px;font-weight:600;letter-spacing:.02em;text-transform:uppercase;color:var(--fg2)}
h1{font-size:clamp(34px,5vw,52px);margin-top:12px}
.updated{margin-top:12px;color:var(--fg2);font-size:15px}
h2{font-size:24px;margin-top:48px;letter-spacing:-.015em}
h3{font-size:19px;margin-top:28px}
main p{margin-top:14px;color:#424245}
main ul,main ol{margin:14px 0 0;padding-left:22px;color:#424245}
main li{margin-top:8px}
.card{margin-top:28px;background:var(--bg2);border-radius:20px;padding:24px 26px}
.card p{margin-top:8px}
.card p:first-child{margin-top:0}
code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.92em;background:var(--bg2);padding:2px 6px;border-radius:6px}
footer{padding:36px 0 60px;font-size:12px;color:var(--fg2);line-height:1.6;background:var(--bg2)}
footer .wide{max-width:1200px;margin:0 auto;padding:0 22px}
footer .row{display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;align-items:center;padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:18px}
footer .brand{display:flex;align-items:center;gap:8px;color:var(--fg);font-weight:600;font-size:14px}
footer nav{display:flex;flex-wrap:wrap;gap:18px}
footer nav a{color:var(--fg2)}