:root{--c2:#0B72C4;--ink:#1c2733;--mut:#5a6675;--line:#e6e9ee}
*{box-sizing:border-box}
body{margin:0;font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:#f5f7fa}
.bar{background:#fff;border-bottom:1px solid var(--line);padding:14px 20px}
.bar a{color:var(--c2);text-decoration:none;font-weight:700;font-size:14px}
.doc{max-width:760px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:14px;padding:36px 40px;margin-top:24px;margin-bottom:60px}
.doc h1{font-size:26px;line-height:1.25;margin:0 0 6px}
.doc .upd{color:var(--mut);font-size:13.5px;margin-bottom:24px}
.doc h2{font-size:18px;margin:26px 0 8px}
.doc p,.doc li{color:#26313d}
.doc ul,.doc ol{padding-left:22px}
.doc li{margin:4px 0}
.doc a{color:var(--c2)}
.req{background:#f6f9fc;border:1px solid var(--line);border-radius:10px;padding:14px 16px;font-size:14.5px;margin:14px 0}
.note{background:#fff8e6;border:1px solid #f0e0b0;border-radius:10px;padding:12px 16px;font-size:13.5px;color:#6b5a1f;margin-top:20px}
@media(max-width:640px){.doc{padding:24px 20px;border-radius:0;margin-top:0}}