:root{--ink:#1d1d1f;--ink-2:#6e6e73;--ink-3:#86868b;--surface:#fff;--surface-alt:#f5f5f7;--hairline:rgba(0,0,0,.09);--accent:#0071e3;--accent-hover:#0077ed;--nav-bg:rgba(255,255,255,.72);--cap-bg:#fff;--cap-edge:rgba(0,0,0,.16)}
@media(prefers-color-scheme:dark){:root{--ink:#f5f5f7;--ink-2:#a1a1a6;--ink-3:#86868b;--surface:#000;--surface-alt:#1c1c1e;--hairline:rgba(255,255,255,.14);--accent:#0a84ff;--accent-hover:#3395ff;--nav-bg:rgba(0,0,0,.72);--cap-bg:#2c2c2e;--cap-edge:rgba(0,0,0,.6)}}
*{box-sizing:border-box}
body{margin:0;background:var(--surface);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Helvetica Neue",Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}
img{max-width:100%}
.wrap{width:760px;max-width:calc(100% - 48px);margin:0 auto}
.nav{position:sticky;top:0;z-index:30;height:52px;display:flex;align-items:center;background:var(--nav-bg);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--hairline)}
.nav .wrap{width:980px;display:flex;align-items:center;gap:32px}
.nav-brand{display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--ink);font-size:15px;font-weight:600;letter-spacing:-.015em}
.nav .back{flex:1;text-align:right;font-size:12.5px;color:var(--accent);text-decoration:none}
main{padding:88px 0 120px}
h1{font-size:48px;line-height:1.08;letter-spacing:-.028em;font-weight:600;margin:0 0 14px;text-wrap:balance}
h2{font-size:21px;line-height:1.28;letter-spacing:-.018em;font-weight:600;margin:44px 0 10px}
h3{font-size:17px;font-weight:600;letter-spacing:-.012em;margin:28px 0 8px}
p,li{font-size:17px;line-height:1.6;letter-spacing:-.008em;color:var(--ink-2);margin:0 0 14px}
ul{padding-left:22px}
li{margin:0 0 8px}
a{color:var(--accent)}
code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em;background:var(--surface-alt);padding:.15em .4em;border-radius:4px}
.updated{font-size:13px;color:var(--ink-3);margin:0 0 40px}
.draft{border:1px solid var(--hairline);border-left:3px solid #c0863b;border-radius:10px;padding:16px 18px;margin:0 0 40px;background:var(--surface-alt)}
.draft p{margin:0;font-size:14px;line-height:1.55}
.draft strong{color:var(--ink)}
footer{background:var(--surface-alt);border-top:1px solid var(--hairline);padding:40px 0}
footer .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
footer p,footer a{font-size:13px;color:var(--ink-3);margin:0;text-decoration:none}
footer a:hover{color:var(--accent)}
.foot-links{display:flex;gap:18px;flex-wrap:wrap}
@media(max-width:860px){main{padding:56px 0 72px}h1{font-size:32px;letter-spacing:-.024em}h2{font-size:19px}p,li{font-size:16px}}