:root{color-scheme:light;--paper:#f7f4ee;--ink:#282923;--muted:#65665e;--red:#a73721;--line:#d9d3c8}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC",sans-serif;font-size:18px;line-height:1.85}a{color:var(--red);text-underline-offset:4px}a:focus-visible{outline:3px solid var(--red);outline-offset:5px}header,main,footer{max-width:900px;margin:auto;padding:28px}header{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:20px}header .brand{display:flex;align-items:center;gap:16px;color:var(--ink);text-decoration:none;font-family:"Songti SC",serif;font-size:26px}header img{width:52px;height:52px;border-radius:12px}nav{display:flex;gap:22px;font-size:16px}main{padding-top:56px;padding-bottom:72px}h1,h2{font-family:"Songti SC",ui-serif,serif;font-weight:500;line-height:1.45;letter-spacing:.05em}h1{font-size:38px;margin:0 0 22px}h2{font-size:25px;margin:40px 0 14px}p{margin:0 0 20px}.lead{font-size:22px;max-width:720px}.muted,.date{color:var(--muted);font-size:16px}.note{border-left:3px solid var(--red);padding:12px 20px;background:#f0eae0}.faq{border-top:1px solid var(--line);padding-top:2px;margin-top:34px}footer{border-top:1px solid var(--line);font-size:14px;color:var(--muted);overflow-wrap:anywhere}.back{display:inline-block;margin-top:36px}ul{padding-left:1.5em}li{margin:12px 0}section{scroll-margin-top:24px}.skip{position:absolute;left:18px;top:-80px;background:var(--paper);padding:12px}.skip:focus{top:10px}@media(max-width:600px){header,main,footer{padding-left:22px;padding-right:22px}header{align-items:flex-start;gap:12px}header .brand{font-size:23px;gap:10px}header img{width:40px;height:40px}nav{gap:14px;font-size:15px;flex-wrap:wrap;justify-content:flex-end}main{padding-top:38px}h1{font-size:31px}.lead{font-size:20px}body{font-size:17px}h2{font-size:23px}}