:root{--bg:#f4f7fb;--paper:#fff;--ink:#0b1833;--muted:#5c6b80;--line:#d5e1ef;--green:#0055cb;--sans:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.75 var(--sans)}
a{color:var(--green)}
.wrap{max-width:760px;margin:auto;padding:28px 22px 80px}
header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:22px;border-bottom:1px solid var(--line)}
.brand img{height:32px;width:auto;display:block}
.back{font-size:14px}
h1{font-size:36px;letter-spacing:-.04em;line-height:1.2;margin:28px 0 8px}
.meta{color:var(--muted);font-size:13px;margin:0 0 28px}
h2{font-size:20px;margin:28px 0 8px}
p,li{font-size:15px}
ul{padding-left:1.2em}
li+li{margin-top:6px}
footer{margin-top:40px;padding-top:18px;border-top:1px solid var(--line);color:var(--muted);font-size:13px;display:flex;flex-wrap:wrap;gap:14px}
footer button{background:none;border:0;padding:0;color:var(--green);font:inherit;cursor:pointer}