@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--brand:#1f43f5;--brand700:#1731e1;--ink:#0b1020;--muted:#5b6478;--line:#e2e8f0;--line2:#f1f5f9;--slate50:#f8fafc}
body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,sans-serif;color:var(--ink);line-height:1.7;
  background:#fff;-webkit-font-smoothing:antialiased}
.container{max-width:80rem;margin-inline:auto;padding-inline:1.5rem}
/* header */
.site-head{border-bottom:1px solid var(--line2);background:#fff;position:sticky;top:0;z-index:10}
.site-head .container{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.brand .mark{display:grid;place-items:center;height:36px;width:36px;border-radius:12px;background:var(--brand);color:#fff;font-weight:800;font-size:13px}
.brand .nm{font-weight:600;font-size:15px}
.nav{display:flex;gap:26px}
.nav a{color:var(--muted);text-decoration:none;font-size:14px;font-weight:500}
.nav a:hover{color:var(--brand700)}
@media(max-width:640px){.nav{display:none}}
/* doc */
.doc{max-width:768px;margin:0 auto;padding:46px 1.5rem 70px}
h1{font-size:2.1rem;font-weight:800;letter-spacing:-.02em;margin-bottom:6px}
.upd{color:var(--muted);font-size:.88rem;margin-bottom:28px}
h2{font-size:1.18rem;font-weight:700;margin:30px 0 10px;color:var(--ink)}
p,li{font-size:1rem;color:#33405a}
ul{margin:8px 0 8px 22px}li{margin:6px 0}
strong{color:var(--ink);font-weight:600}
.note{background:#eef4ff;border:1px solid #dae7ff;border-left:3px solid var(--brand);border-radius:12px;padding:13px 16px;margin:16px 0;font-size:.95rem}
a.link{color:var(--brand);text-decoration:none;font-weight:500}a.link:hover{color:var(--brand700);text-decoration:underline}
/* footer */
.site-foot{border-top:1px solid var(--line);background:var(--slate50)}
.site-foot .container{display:flex;flex-direction:column;align-items:center;justify-content:space-between;gap:10px;
  padding-top:22px;padding-bottom:22px;font-size:12px;color:var(--muted)}
.site-foot .legal{display:flex;gap:18px}
.site-foot a{color:var(--muted);text-decoration:none}.site-foot a:hover{color:var(--brand700)}
@media(min-width:640px){.site-foot .container{flex-direction:row}}