:root{--brand:#df5433;--brand-dark:#b9411f;--accent:#f2b705;--ink:#2b2b2b;--muted:#666;--line:#e6e6e6;--bg:#fff;--soft:#f7f5f2}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:17px/1.7 Raleway,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:#1f6fb2}a:hover{color:var(--brand)}
img{max-width:100%;height:auto}
.wrap{max-width:1100px;margin:0 auto;padding:0 16px}
header.site{position:sticky;top:0;z-index:10;background:#fff;box-shadow:0 1px 6px rgba(0,0,0,.08)}
header.site .wrap{display:flex;align-items:stretch;justify-content:space-between;min-height:64px}
.brand{display:flex;align-items:center;background:var(--brand);color:#fff;text-decoration:none;font-size:24px;font-weight:500;padding:0 22px;letter-spacing:.2px}
.brand:hover{color:#fff;background:var(--brand-dark)}
nav.main ul{display:flex;list-style:none;margin:0;padding:0;height:100%}
nav.main a{display:flex;align-items:center;height:100%;padding:0 16px;color:#444;text-decoration:none;font-size:15px;border-left:1px solid var(--line)}
nav.main a:hover,nav.main a.on{color:var(--brand)}
#navtoggle,.burger{display:none}
main{padding:36px 0 24px}
article{max-width:820px}
article h1{font-size:34px;line-height:1.25;font-weight:500;margin:0 0 24px;padding:6px 0 6px 18px;border-left:4px solid var(--accent)}
article h2{font-size:26px;line-height:1.3;font-weight:500;margin:36px 0 14px;padding-left:16px;border-left:4px solid var(--accent)}
article h3{font-size:21px;font-weight:600;margin:28px 0 10px}
article h4{font-size:18px;font-weight:600;margin:22px 0 8px}
article p{margin:0 0 16px}
article ul,article ol{padding-left:22px;margin:0 0 16px}
article table{border-collapse:collapse;width:100%;margin:0 0 20px;font-size:15px;display:block;overflow-x:auto}
article td,article th{border:1px solid var(--line);padding:6px 10px;vertical-align:top}
article tr:nth-child(even) td{background:var(--soft)}
.ad{margin:24px 0;min-height:90px}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:48px}
aside.side h3{font-size:14px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:0 0 10px}
aside.side ul{list-style:none;margin:0 0 28px;padding:0;border-top:1px solid var(--line)}
aside.side li a{display:block;padding:8px 0;border-bottom:1px solid var(--line);text-decoration:none;color:#333;font-size:15px}
aside.side li a:hover{color:var(--brand)}
footer.site{background:#2f2f2f;color:#ccc;margin-top:40px;padding:36px 0 20px;font-size:14px}
footer.site .cols{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
footer.site h4{color:#fff;font-size:15px;font-weight:600;margin:0 0 10px}
footer.site ul{list-style:none;margin:0;padding:0}
footer.site li{margin:0 0 6px}
footer.site a{color:#ccc;text-decoration:none}footer.site a:hover{color:#fff}
footer.site .legal{border-top:1px solid #444;margin-top:24px;padding-top:16px;display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between}
.preview-note{background:#fff3cd;color:#6b5200;text-align:center;font-size:13px;padding:6px}
@media (max-width:900px){.layout{grid-template-columns:1fr}aside.side{display:none}footer.site .cols{grid-template-columns:1fr 1fr}}
@media (max-width:760px){
 body{font-size:16px}
 .brand{font-size:20px;padding:0 16px}
 .burger{display:flex;align-items:center;padding:0 16px;cursor:pointer;font-size:26px;color:#444;user-select:none}
 nav.main{position:absolute;left:0;right:0;top:64px;background:#fff;box-shadow:0 6px 10px rgba(0,0,0,.08);display:none}
 #navtoggle:checked ~ nav.main{display:block}
 nav.main ul{flex-direction:column}
 nav.main a{border-left:0;border-top:1px solid var(--line);padding:14px 16px}
 article h1{font-size:27px}article h2{font-size:22px}
 footer.site .cols{grid-template-columns:1fr}
}