:root{color-scheme:light;--ink:#26333b;--muted:#60717b;--line:#dbe4e7;--link:#27616c;--panel:#f5f8f8}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:24px}
body{margin:0;background:#fff;color:var(--ink);font:16px/1.65 "Segoe UI",Arial,sans-serif}
a{color:var(--link);text-underline-offset:3px}
a:hover{text-decoration-thickness:2px}
a:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid #397b9a;outline-offset:4px}
.skip{position:absolute;left:16px;top:-100px;background:white;padding:10px;z-index:5}
.skip:focus{top:12px}
.sidebar{position:fixed;inset:0 auto 0 0;width:260px;overflow-y:auto;background:var(--panel);border-right:1px solid var(--line);padding:30px 24px}
.brand{font-size:21px;font-weight:700;text-decoration:none}
.subtitle{color:var(--muted);font-size:13px;margin:4px 0 26px}
.portal{display:grid;gap:4px;border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:20px;font-size:14px}
.sections{display:grid;gap:6px}
.sections a{display:block;padding:8px 10px;border-radius:5px;text-decoration:none;font-size:15px}
.sections a[aria-current=page]{background:#e0ecef;font-weight:600}
.sections a:hover{background:#e9f0f2}
.toc{margin-top:22px;font-size:13px;color:var(--muted)}
.toc summary{cursor:pointer;font-weight:600;margin-bottom:8px}
.toc ul{list-style:none;padding-left:12px;margin:4px 0}
.toc li{margin:6px 0}
.toc a{text-decoration:none}
main{margin-left:260px;max-width:1240px;padding:48px 48px 36px;min-width:0}
h1{font-size:34px;line-height:1.2;letter-spacing:-.6px;margin:0 0 24px}
h2{font-size:23px;line-height:1.3;margin:38px 0 15px}
p{margin:0 0 18px}
li{margin:7px 0}
img{max-width:100%;height:auto}
img[src="scheme.svg"]{display:block;width:100%;margin:26px 0;border:1px solid var(--line);border-radius:6px}
.table-scroll{overflow:auto;margin:22px 0;border:1px solid var(--line);border-radius:6px}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;vertical-align:top;padding:12px 14px;border-bottom:1px solid var(--line)}
th{background:var(--panel);font-weight:600}
tr:last-child td{border-bottom:0}
tbody tr:nth-child(even){background:#fafcfc}
body[data-page="io.html"] table{min-width:720px}
footer{border-top:1px solid var(--line);margin-top:36px;padding-top:20px;font-size:13px;color:var(--muted)}
@media(max-width:760px){
 .sidebar{position:static;width:auto;padding:22px 20px;border-right:0;border-bottom:1px solid var(--line)}
 .subtitle{margin-bottom:14px}.portal{display:flex;flex-wrap:wrap;gap:8px 22px;margin-bottom:10px;padding-bottom:12px}
 .sections{display:flex;flex-wrap:wrap;gap:4px}.sections a{font-size:14px;padding:7px 10px}
 .toc{display:none}main{margin-left:0;padding:28px 20px;max-width:100%}h1{font-size:28px}h2{font-size:22px}
}
@media print{
 .sidebar,.skip,footer{display:none}main{margin:0;max-width:none;padding:0}
 body{font-size:11pt}h1{font-size:22pt}h2{font-size:16pt;break-after:avoid}
 a{color:inherit;text-decoration:none}.table-scroll{overflow:visible;border:0}
 body[data-page="io.html"] table{min-width:0;font-size:9pt}th,td{padding:6px}
 tr,img{break-inside:avoid}
}