:root{color-scheme:light;--paper:#f8f6f2;--ink:#24231f;--muted:#69665e;--line:#dfdbd2;--accent:#476348}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.85 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}a{color:var(--accent);text-underline-offset:4px}a:hover{color:var(--ink)}a:focus-visible{outline:2px solid var(--accent);outline-offset:5px}header,main,footer{width:min(100% - 40px,880px);margin-inline:auto}header{display:flex;justify-content:space-between;align-items:center;gap:24px;padding-block:28px;border-bottom:1px solid var(--line)}.brand{font-weight:700;color:var(--ink);text-decoration:none;font-size:19px}nav{display:flex;gap:22px;flex-wrap:wrap}nav a{font-size:14px;text-decoration:none}main{padding-block:48px 72px}.eyebrow,.draft,.meta{font-size:13px;color:var(--muted)}.eyebrow{letter-spacing:.1em}.draft{border-bottom:1px solid var(--line);padding-bottom:18px;margin:0 0 34px}.draft strong{font-weight:600;color:var(--accent)}h1{font-family:"Songti SC","Noto Serif CJK SC",serif;font-size:clamp(32px,6vw,46px);line-height:1.3;font-weight:600;letter-spacing:-.025em;margin:12px 0 18px}h2{font-size:21px;line-height:1.5;margin:42px 0 12px}h3{font-size:17px;margin:24px 0 8px}p,ul,ol{margin:12px 0}li{margin-block:6px}.lead{font-size:19px;max-width:35em}.toc{padding:20px 0;margin-top:24px;border-block:1px solid var(--line);display:flex;gap:12px 26px;flex-wrap:wrap;font-size:14px}.links{padding:0;list-style:none;margin-top:36px}.links li{border-top:1px solid var(--line);margin:0}.links a{display:grid;grid-template-columns:1fr auto;gap:16px;padding:21px 0;text-decoration:none;font-size:19px}.links span{font-size:14px;color:var(--muted);font-weight:400}.table-scroll{overflow-x:auto;margin-top:18px}table{border-collapse:collapse;width:100%;font-size:14px;text-align:left}th{font-weight:600;color:var(--muted)}th,td{padding:14px 12px 14px 0;border-bottom:1px solid var(--line);vertical-align:top}th:first-child{min-width:100px}td{min-width:140px}code{font-size:.88em;overflow-wrap:anywhere}aside{border-block:1px solid var(--line);padding:14px 0;margin:28px 0}.steps{padding-left:24px}.steps li{padding-left:6px;margin:18px 0}footer{padding-block:25px 40px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}footer nav{gap:16px}footer a{font-size:13px}.skip{position:absolute;left:20px;top:-60px;background:var(--paper);padding:10px}.skip:focus{top:10px}@media(max-width:560px){header,main,footer{width:calc(100% - 36px)}header{align-items:flex-start;gap:18px;flex-direction:column;padding-block:23px}header nav{gap:18px}main{padding-top:32px}h2{margin-top:34px}.lead{font-size:17px}.links a{display:block}.links span{display:block;margin-top:4px}.draft{margin-bottom:26px}th,td{font-size:13px}footer{gap:14px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

.brand{display:inline-flex;align-items:center;gap:10px}.app-icon{display:block;width:36px;height:36px;border-radius:9px;flex:none}