:root{color-scheme:light;--ink:#17352e;--muted:#5a6d66;--line:#d5e0da;--accent:#14654e;--paper:#f7f8f3}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:17px;line-height:1.85}.wrap{width:min(100% - 48px,850px);margin-inline:auto}header,footer{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-block:24px;border-bottom:1px solid var(--line)}a{color:var(--accent);text-underline-offset:5px}.brand{font-size:17px;font-weight:650;text-decoration:none;color:var(--ink)}nav{font-size:15px}main{padding-block:64px 36px}.eyebrow{margin:0 0 16px;font-size:13px;letter-spacing:.12em;color:var(--accent)}h1{font-size:clamp(32px,5vw,48px);line-height:1.25;letter-spacing:-.035em;margin:0 0 24px}h2{font-size:23px;line-height:1.45;margin:0 0 16px}p{margin:0 0 18px}.lead{font-size:20px;line-height:1.9}section{padding-block:32px 16px;border-top:1px solid var(--line);margin-top:32px}li{padding-left:5px;margin-bottom:8px}ol{padding-left:25px}code{font-size:.85em;overflow-wrap:anywhere;background:#e9efe8;padding:3px 5px;border-radius:4px}.muted{color:var(--muted);font-size:15px}footer{border-top:1px solid var(--line);border-bottom:0;font-size:14px;margin-bottom:24px}.policy h1{margin-bottom:16px}.policy section{margin-top:24px}@media(max-width:520px){body{font-size:16px}.wrap{width:calc(100% - 36px)}header,footer{gap:12px}.brand{font-size:14px}nav{font-size:14px}main{padding-top:42px}.lead{font-size:18px}h2{font-size:21px}}