:root{
  --ink:#16222b;
  --muted:#51626e;
  --line:#d8e0e5;
  --paper:#ffffff;
  --soft:#f2f6f8;
  --sea:#0e4a5a;
  --sea-dark:#0a3845;
  --ok:#1f6f4a;
  --no:#9b2c2c;
  --max:1120px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{font-family:-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;font-size:17px;line-height:1.65;color:var(--ink);background:var(--paper)}
img{max-width:100%;height:auto;display:block}
a{color:var(--sea)}
a:focus-visible,summary:focus-visible{outline:3px solid var(--sea);outline-offset:3px}

.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}

/* header */
.site-header{border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;padding-top:18px;padding-bottom:18px}
.logo{font-weight:700;font-size:20px;color:var(--ink);text-decoration:none}
.logo span{color:var(--sea)}
.header-cta{font-size:15px;font-weight:600;text-decoration:none;color:var(--sea);border:1px solid var(--sea);padding:7px 14px;border-radius:4px}
.header-cta:hover{background:var(--sea);color:#fff}

/* layout */
.layout{display:grid;grid-template-columns:230px 1fr;gap:56px;max-width:var(--max);margin:0 auto;padding:40px 20px 64px}
.toc{position:sticky;top:24px;align-self:start;font-size:15px}
.toc h4{font-size:14px;color:var(--muted);font-weight:600;margin-bottom:10px}
.toc ul{list-style:none;border-left:2px solid var(--line)}
.toc li a{display:block;padding:5px 0 5px 14px;margin-left:-2px;color:var(--ink);text-decoration:none;border-left:2px solid transparent}
.toc li a:hover{border-left-color:var(--sea);color:var(--sea)}

main{min-width:0;max-width:760px}
h1{font-size:40px;line-height:1.15;margin-bottom:16px}
h2{font-size:28px;line-height:1.25;margin-bottom:14px}
h3{font-size:21px;line-height:1.3;margin:30px 0 12px}
p{margin-bottom:16px}
.lead{font-size:20px;color:var(--muted);margin-bottom:22px}
hr{border:0;border-top:1px solid var(--line);margin:44px 0}
.figure{margin:8px 0 24px;background:var(--soft);border-radius:6px;padding:18px}
.figure figcaption{font-size:14px;color:var(--muted);margin-top:8px}

/* cards */
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:10px 0 18px}
.card{border:1px solid var(--line);border-radius:6px;padding:16px 18px}
.card h4{font-size:17px;margin-bottom:6px}
.card p{font-size:15.5px;margin:0;color:#2e3d47}

/* lists */
ul.plain,ol.plain{margin:0 0 18px 22px}
ul.plain li,ol.plain li{margin-bottom:8px}
.checks{list-style:none;margin:6px 0 18px}
.checks li{position:relative;padding:8px 0 8px 30px;border-bottom:1px solid var(--line)}
.checks li:last-child{border-bottom:0}
.checks li::before{position:absolute;left:4px;top:8px;font-weight:700}
.checks .do::before{content:"✓";color:var(--ok)}
.checks .no::before{content:"✗";color:var(--no)}

.rank{list-style:none;counter-reset:r;margin:6px 0 18px}
.rank li{counter-increment:r;position:relative;padding:14px 0 14px 48px;border-bottom:1px solid var(--line)}
.rank li::before{content:counter(r);position:absolute;left:0;top:14px;width:32px;height:32px;border-radius:50%;background:var(--soft);color:var(--sea);font-weight:700;display:flex;align-items:center;justify-content:center}
.rank h4{font-size:17px;margin-bottom:4px}
.rank p{margin:0;font-size:15.5px}

.table-wrap{overflow-x:auto;margin:6px 0 20px}
table{width:100%;border-collapse:collapse;font-size:15.5px}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--soft);font-weight:600}

details{border-bottom:1px solid var(--line);padding:12px 0}
summary{cursor:pointer;font-weight:600}
details p{margin:10px 0 0}

/* contact */
.contact{background:var(--soft);border-radius:8px;padding:28px}
.contact h3{margin-top:0}
.btn{display:inline-block;background:var(--sea);color:#fff;text-decoration:none;font-weight:600;font-size:18px;padding:14px 28px;border-radius:5px;margin:8px 0 6px}
.btn:hover{background:var(--sea-dark)}
.quick{border-left:3px solid var(--sea);padding:6px 0 6px 16px;margin-top:26px}
.quick h4{margin-bottom:4px}
.quick p{margin:0}

/* footer */
.site-footer{border-top:1px solid var(--line);font-size:14px;color:var(--muted)}
.site-footer .wrap{padding-top:26px;padding-bottom:26px}
.site-footer nav a{margin-right:18px;color:var(--muted)}
.site-footer p{margin:10px 0 0}

/* legal pages */
.legal{max-width:760px;margin:0 auto;padding:44px 20px 64px}
.legal h1{font-size:34px}
.legal h2{font-size:22px;margin-top:32px}
.legal ul{margin:0 0 16px 22px}
.legal li{margin-bottom:6px}
.legal .updated{color:var(--muted);font-size:15px}

@media (max-width:860px){
  .layout{grid-template-columns:1fr;gap:24px;padding-top:24px}
  .toc{position:static;background:var(--soft);padding:14px 16px;border-radius:6px}
  h1{font-size:31px}
  h2{font-size:24px}
  .grid{grid-template-columns:1fr}
}