:root{--bg:#F4F3F6;--ink:#1D1728;--sub:#575068;--pri:#44307A;--line:#DCD9E2;--rule:#ECEAF0;--gut:#EEECF2;--asagi:#0F7C86}
@media (prefers-color-scheme:dark){:root{--bg:#111016;--ink:#ECE9F2;--sub:#A9A3B8;--pri:#B8A6EE;--line:#2E2A38;--rule:#1D1B25;--gut:#16141C;--asagi:#4CC3CC}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,"Hiragino Sans","Hiragino Kaku Gothic ProN",Meiryo,sans-serif;line-height:1.85;-webkit-font-smoothing:antialiased}
.wrap{max-width:720px;margin:0 auto;padding:56px 16px 88px}
header{position:relative;padding:24px 24px 24px 60px;border:1px solid var(--line);background:repeating-linear-gradient(to bottom,transparent 0,transparent 21px,var(--rule) 21px,var(--rule) 22px);margin-bottom:36px}
header:before{content:"";position:absolute;left:0;top:0;bottom:0;width:36px;background:var(--gut);border-right:1px solid var(--line)}
.mark{position:absolute;left:12px;top:30px;width:0;height:0;border-top:7px solid transparent;border-bottom:7px solid transparent;border-left:11px solid var(--asagi)}
h1{font-size:22px;margin:0 0 4px}
.app,.date{color:var(--sub);font-size:14px;margin:0}
h2{font-size:13px;letter-spacing:.14em;color:var(--sub);font-family:ui-monospace,Menlo,monospace;margin:34px 0 8px;font-weight:600;border-left:3px solid var(--pri);padding-left:10px}
p{margin:8px 0}ul{margin:8px 0;padding-left:1.2em}li{margin:5px 0}
a{color:var(--pri)}
nav{margin-top:44px;padding-top:20px;border-top:1px solid var(--line);font-size:14px}
footer{margin-top:48px;color:var(--sub);font-size:13px}