:root{--paper:#F2EEE6;--ink:#141216;--pink:#EFA5B5}
@media (prefers-color-scheme:dark){:root{--paper:#141216;--ink:#F2EEE6}}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.75 -apple-system,BlinkMacSystemFont,"Hiragino Sans","Noto Sans JP",sans-serif}
main{max-width:720px;margin:0 auto;padding:48px 16px 80px}
h1{font-size:2rem;margin:0 0 .25em;letter-spacing:.04em}
h2{font-size:1.15rem;margin:2em 0 .5em;border-left:6px solid var(--pink);padding-left:10px}
a{color:inherit;text-decoration-color:var(--pink);text-decoration-thickness:2px}
.sub{opacity:.75;margin:0 0 2em}
nav{display:flex;gap:16px;flex-wrap:wrap;margin:0 0 2em;font-weight:600}
footer{margin-top:3em;font-size:.85rem;opacity:.7}
ul{padding-left:1.2em}