/* Shared shell — identical on every domain and every page.
   Only page HTML differs (the tested element). Keep this file the same everywhere. */
:root { --fg:#1a1a1a; --muted:#586069; --line:#e1e4e8; --link:#0b66c3; }
* { box-sizing: border-box; }
body { margin:0; color:var(--fg); font:16px/1.6 -apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif; }
.site-header, header { border-bottom:1px solid var(--line); padding:14px 20px; }
.logo { font-weight:700; text-decoration:none; color:var(--fg); }
main, .main { max-width:760px; margin:0 auto; padding:28px 20px 48px; }
h1 { font-size:28px; line-height:1.25; margin:0 0 14px; }
h2 { font-size:21px; margin:26px 0 8px; }
h3 { font-size:18px; margin:20px 0 6px; }
h4 { font-size:16px; margin:16px 0 6px; }
p { margin:0 0 14px; }
ul { margin:0 0 14px; padding-left:22px; }
table { border-collapse:collapse; width:100%; margin:0 0 14px; }
th, td { border:1px solid var(--line); padding:8px 10px; text-align:left; }
th { background:#f6f8fa; }
a { color:var(--link); }
.site-footer, footer { border-top:1px solid var(--line); padding:18px 20px; color:var(--muted); font-size:14px; }