:root{--bg:#f4f6f9;--panel:#fff;--line:#e3e8ef;--ink:#1a2433;--mut:#5c6b80;--pri:#2563eb}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.7}
a{color:var(--pri);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:820px;margin:0 auto;padding:0 22px}
header{background:var(--panel);border-bottom:1px solid var(--line)}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{font-weight:800;font-size:19px;letter-spacing:-.4px}.logo span{color:var(--pri)}
.logo a{color:inherit}
.doc{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:36px 42px;margin:32px 0}
.doc h1{font-size:30px;letter-spacing:-.6px;margin:0 0 6px}
.upd{color:var(--mut);font-size:14px;margin:0 0 26px}
.doc h2{font-size:20px;margin:30px 0 8px;padding-top:6px}
.doc h3{font-size:16px;margin:20px 0 6px}
.doc p,.doc li{color:#33414f;font-size:15.5px}
.doc ul{padding-left:22px}
.doc li{margin:5px 0}
table{width:100%;border-collapse:collapse;margin:12px 0;font-size:14.5px}
th,td{border:1px solid var(--line);padding:9px 11px;text-align:left;vertical-align:top}
th{background:#f7f9fc}
.box{background:#eef2fb;border:1px solid #d6e0f5;border-radius:10px;padding:16px 18px;margin:18px 0}
footer{background:var(--panel);border-top:1px solid var(--line);padding:26px 0;color:var(--mut);font-size:14px}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
footer a{margin-right:16px;color:var(--mut)}
@media(max-width:520px){.doc{padding:24px 20px}}