:root{--paper:#f6f7f9;--ink:#1b1f24;--muted:#5f6772;--line:#dce0e6;--seal:#c8362b}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",system-ui,sans-serif;line-height:1.7}
.wrap{max-width:820px;margin:0 auto;padding:32px 24px 60px}a{color:var(--seal)}
h1{font-size:30px;margin:8px 0 4px}h2{font-size:19px;margin:28px 0 8px}.muted{color:var(--muted);font-size:14px}
.brand{display:inline-flex;align-items:center;gap:8px;font-weight:700;text-decoration:none;color:var(--ink)}.seal{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:6px;background:var(--seal);color:#fff}
ul{padding-left:20px}li{margin:4px 0}