:root{
  --primary:#087A70;--primary-deep:#066560;--primary-light:#E8F5F3;
  --accent:#9E5A15;--bg:#FFF8F0;--bg-warm:#FAF6F1;--surface:#F0EAE1;
  --text-1:#2D2D2D;--text-2:#555;--text-3:#707070;
  --hairline:rgba(45,45,45,.08);
  --shadow-sm:0 .5px 0 rgba(0,0,0,.04),0 2px 6px rgba(0,0,0,.02);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text-1);
  font-family:'Inter',system-ui,-apple-system,Segoe UI,sans-serif;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  line-height:1.6;font-size:16px}
::selection{background:var(--primary);color:#fff}
a{color:var(--primary);text-decoration:underline;text-underline-offset:2px}
a:hover{color:var(--primary-deep)}
img{max-width:100%;display:block}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--primary);color:#fff;padding:10px 16px;border-radius:0 0 10px 0;font-weight:600;font-size:14px;z-index:100}
.skip-link:focus{left:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

.nav{position:sticky;top:0;z-index:50;backdrop-filter:saturate(140%) blur(14px);background:color-mix(in oklab,var(--bg) 80%,transparent);border-bottom:1px solid var(--hairline)}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 28px;display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;letter-spacing:-.01em;font-size:18px;color:var(--text-1);text-decoration:none}
.brand img{width:30px;height:30px;border-radius:8px;box-shadow:0 0 0 1px rgba(0,0,0,.06)}
.nav .back{font-size:13.5px;color:var(--text-2);text-decoration:none;display:inline-flex;align-items:center;gap:6px}
.nav .back:hover{color:var(--primary)}

main{max-width:780px;margin:0 auto;padding:56px 28px 80px}
header.lead{margin-bottom:40px;padding-bottom:24px;border-bottom:1px solid var(--hairline)}
header.lead .eyebrow{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}
h1{font-size:clamp(28px,4vw,38px);font-weight:600;letter-spacing:-.02em;line-height:1.15;margin:0 0 10px;color:var(--text-1)}
header.lead p{margin:0;color:var(--text-3);font-size:14px}

h2{font-size:22px;font-weight:600;letter-spacing:-.015em;margin:40px 0 12px;color:var(--text-1);scroll-margin-top:88px}
h3{font-size:17px;font-weight:600;margin:24px 0 8px;color:var(--text-1)}
p,ul,ol{margin:0 0 14px;color:var(--text-2);font-size:15.5px}
ul,ol{padding-left:22px}
li{margin-bottom:6px}
strong,b{color:var(--text-1);font-weight:600}
small{font-size:13px;color:var(--text-3)}

.callout{background:var(--bg-warm);border:1px solid var(--hairline);border-radius:14px;padding:18px 20px;margin:24px 0;font-size:14.5px;color:var(--text-2)}
.callout.brand{background:var(--primary-light);border-color:color-mix(in oklab,var(--primary) 18%,var(--hairline));color:var(--text-1)}
.callout p:last-child{margin-bottom:0}

.toc{background:#fff;border:1px solid var(--hairline);border-radius:14px;padding:18px 22px;margin:0 0 36px;box-shadow:var(--shadow-sm)}
.toc h2{margin:0 0 10px;font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.12em;color:var(--text-3)}
.toc ol{list-style:decimal;padding-left:22px;margin:0;font-size:14.5px;color:var(--text-2)}
.toc li{margin-bottom:4px}
.toc a{color:var(--text-2);text-decoration:none}
.toc a:hover{color:var(--primary);text-decoration:underline}

dl{display:grid;grid-template-columns:max-content 1fr;gap:8px 18px;margin:0 0 18px;font-size:15px}
dt{color:var(--text-3);font-weight:500}
dd{margin:0;color:var(--text-1)}
@media(max-width:520px){dl{grid-template-columns:1fr;gap:2px}dt{margin-top:8px;font-size:13px}}

footer{background:var(--bg);border-top:1px solid var(--hairline);padding:32px 0 28px;margin-top:48px}
.foot-inner{max-width:1200px;margin:0 auto;padding:0 28px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;font-size:13px;color:var(--text-3)}
.foot-links{display:flex;gap:22px;flex-wrap:wrap}
.foot-links a{color:var(--text-2);text-decoration:none;font-size:13.5px}
.foot-links a:hover{color:var(--primary)}