:root{font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:#191b18;background:#fffdf8;line-height:1.85;color-scheme:light}
*{box-sizing:border-box}body{margin:0}a{color:#655023;text-underline-offset:4px}
header,main,footer{max-width:860px;margin:auto;padding:30px 28px}header{border-bottom:1px solid #e5e4dc}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:inherit;width:fit-content;line-height:1.4}
.brand img{width:40px;height:40px;border-radius:10px}.brand strong{font-size:19px}.brand small{display:block;color:#74746b;letter-spacing:2px;font-size:11px}
main{padding-top:52px;padding-bottom:64px}h1{font-size:clamp(36px,6vw,56px);line-height:1.2;letter-spacing:-1.5px;margin:18px 0 30px}h2{font-size:23px;color:#24251e;margin:42px 0 12px;line-height:1.5}
p,ul{margin:12px 0}li{margin:8px 0}.muted{color:#6b6e63;font-size:14px}.intro{border-left:4px solid #e3bc6c;padding:18px 22px;background:#f3efdf;border-radius:0 16px 16px 0}
footer{border-top:1px solid #e5e4dc;font-size:14px;display:flex;flex-wrap:wrap;gap:24px}code{overflow-wrap:anywhere}a:focus-visible{outline:3px solid #b88828;outline-offset:5px}
@media(max-width:540px){header,main,footer{padding-left:22px;padding-right:22px}main{padding-top:32px}h2{font-size:21px}.intro{padding:16px}}