:root{--paper:#f3efe6;--ink:#1f1e1b;--ink2:#4f4b44;--rule:rgba(31,30,27,.15);color-scheme:light}
@media (prefers-color-scheme:dark){:root{--paper:#141311;--ink:#e9e3d6;--ink2:#bcb5a7;--rule:rgba(233,227,214,.15);color-scheme:dark}}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.75 "PingFang SC","Hiragino Sans GB",system-ui,sans-serif}
main{max-width:680px;margin:0 auto;padding:56px 20px 80px}h1,h2{font-family:"Songti SC","Noto Serif SC",serif;text-wrap:balance}
h1{font-size:30px;margin:0 0 8px}h2{font-size:19px;margin:32px 0 8px;border-top:1px solid var(--rule);padding-top:20px}
p,li{color:var(--ink2)}a{color:inherit;text-underline-offset:3px}.en{font-size:14px}footer{margin-top:48px;font-size:13px;color:var(--ink2)}