.bg-doc{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:56px;align-items:start;padding-top:30px}.bg-doc__updated{margin:10px 0 0}.bg-doc__body{max-width:760px}.bg-doc__body h2{font-size:24px}.bg-doc__body h3{font-size:19px;margin-top:28px}.bg-doc__rail{position:sticky;top:calc(var(--header-h) + 20px)}.bg-doc__nav{border:1px solid var(--line);border-radius:var(--r-lg);padding:16px 18px}.bg-doc__nav ul{list-style:none;padding:0;margin:8px 0 0}.bg-doc__nav a{display:block;padding:7px 0;border-top:1px solid var(--line);color:var(--ink);font-weight:550;font-size:15px}.bg-doc__nav a[aria-current=page]{color:var(--act);font-weight:700}.bg-doc__form{font-family:var(--sans);margin-top:28px;max-width:560px}.bg-doc__form .bg-btn{margin-top:6px}@media (max-width:1040px){.bg-doc{grid-template-columns:minmax(0,1fr);gap:0}.bg-doc__rail{position:static;margin-top:40px}}