:root{--navy:#0b1f3a;--navy2:#16325a;--teal:#0e9aa7;--teal2:#2ec4c6;--glass:#e8f7f7;--ink:#1b2a3d;--muted:#5b6b80;--line:#dce6ee;--bg:#fff;--soft:#f6f9fb;--r:10px;--font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.65;font-size:17px}
a{color:var(--teal);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--navy)}
.wrap{max-width:1160px;margin:0 auto;padding:0 22px}
.narrow{max-width:780px}
.skip{position:absolute;left:-999px;top:0;background:var(--navy);color:#fff;padding:8px 12px;z-index:10}.skip:focus{left:8px}
.grid-bg{background-color:var(--soft);background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:32px 32px;border-bottom:1px solid var(--line)}
/* header */
.top{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.top-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--navy)}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.wordmark{font-weight:800;font-size:1.45rem;letter-spacing:-.02em;color:var(--navy)}
.wordmark b{color:var(--teal);font-weight:800}
.brand small{font-size:.74rem;color:var(--muted);letter-spacing:.06em;text-transform:uppercase;margin-top:3px}
.nav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:2px}
.nav li{position:relative}
.nav a,.nav .lbl{display:block;padding:8px 10px;color:var(--navy);text-decoration:none;font-size:.92rem;font-weight:550;border-radius:6px}
.nav a:hover{background:var(--glass)}
.nav a[aria-current=page],.nav .trail>a{color:var(--teal);box-shadow:inset 0 -2px 0 var(--teal);border-radius:0}
.nav li ul{display:none;position:absolute;top:100%;left:0;background:#fff;border:1px solid var(--line);border-radius:8px;min-width:220px;flex-direction:column;padding:6px;box-shadow:0 10px 30px rgba(11,31,58,.08)}
.nav li:hover>ul,.nav li:focus-within>ul{display:flex}
.navtoggle,.navbtn{display:none}
@media(max-width:980px){.navbtn{display:inline-block;border:1px solid var(--line);padding:7px 14px;border-radius:6px;font-weight:600;cursor:pointer;color:var(--navy)}.nav>ul{display:none;position:absolute;left:0;right:0;top:68px;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;padding:10px 22px 16px}.navtoggle:checked~ul{display:flex}.nav li ul{position:static;display:flex;border:0;box-shadow:none;padding-left:14px}}
/* hero */
.hero{padding:56px 0 48px}
.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
.hero-art{width:100%;height:auto;max-width:420px;justify-self:end}
.eyebrow{font-family:var(--mono);font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;color:var(--teal);margin:0 0 10px}
.eyebrow::before{content:"";display:inline-block;width:18px;height:2px;background:var(--teal);vertical-align:middle;margin-right:8px}
h1,h2,h3{color:var(--navy);line-height:1.2;letter-spacing:-.015em}
.hero h1{font-size:clamp(2rem,4.2vw,3.1rem);margin:0 0 14px}
.lede{font-size:1.15rem;color:var(--muted);margin:0 0 18px;max-width:62ch}
.cta{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0 0}
.btn{display:inline-block;background:var(--navy);color:#fff;text-decoration:none;padding:11px 18px;border-radius:8px;font-weight:600;font-size:.95rem}
.btn:hover{background:var(--teal);color:#fff}
.btn.ghost{background:#fff;color:var(--navy);border:1px solid var(--navy)}
.btn.ghost:hover{border-color:var(--teal);color:var(--teal)}
@media(max-width:820px){.hero-inner{grid-template-columns:1fr}.hero-art{justify-self:center;max-width:300px}}
/* sections & cards */
.section{padding:44px 22px}
.section-head{display:flex;justify-content:space-between;align-items:baseline;border-bottom:1px solid var(--line);margin-bottom:22px}
.section-head h2{margin:0 0 10px;font-size:1.45rem}
.section-head a{font-size:.9rem;text-decoration:none;font-weight:600}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
.card{border:1px solid var(--line);border-radius:var(--r);padding:20px 20px 16px;background:#fff;position:relative;transition:border-color .15s,transform .15s}
.card::before{content:"";position:absolute;left:0;top:0;right:0;height:3px;background:linear-gradient(90deg,var(--teal),var(--teal2));border-radius:var(--r) var(--r) 0 0;opacity:0;transition:opacity .15s}
.card:hover{border-color:var(--teal2);transform:translateY(-2px)}.card:hover::before{opacity:1}
.card h3{font-size:1.12rem;margin:4px 0 8px}
.card h3 a{color:var(--navy);text-decoration:none}
.card h3 a::after{content:"";position:absolute;inset:0}
.card p{margin:0 0 10px;color:var(--muted);font-size:.95rem}
.kicker{font-family:var(--mono);font-size:.72rem!important;letter-spacing:.1em;text-transform:uppercase;color:var(--teal)!important;margin:0!important}
.meta{font-size:.82rem;color:var(--muted)}
.card .meta{margin:0}
.topics{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px}
.topics a{display:block;height:100%;padding:16px;border:1px solid var(--line);border-left:3px solid var(--teal);border-radius:8px;text-decoration:none;color:var(--navy);background:var(--soft)}
.topics a:hover{background:var(--glass)}
.topics span{display:block;color:var(--muted);font-size:.88rem;margin-top:4px}
.chips{list-style:none;padding:0;margin:30px 0 0;display:flex;flex-wrap:wrap;gap:8px}
.chips a{display:inline-block;border:1px solid var(--line);border-radius:999px;padding:5px 13px;font-size:.88rem;text-decoration:none;color:var(--navy)}
.chips a:hover{border-color:var(--teal);color:var(--teal)}
.pager{display:flex;gap:18px;justify-content:center;align-items:center;margin-top:30px}
/* documents */
.doc-head{padding:42px 0 30px}
.doc-head h1{font-size:clamp(1.8rem,3.6vw,2.6rem);margin:0 0 12px}
.crumbs{font-size:.84rem;color:var(--muted);margin:0 0 12px}.crumbs a{color:var(--muted)}
.prose{padding-top:30px;padding-bottom:30px}
.prose h2{font-size:1.5rem;margin:2em 0 .5em;padding-top:.6em;border-top:1px solid var(--line)}
.prose h3{font-size:1.18rem;margin:1.6em 0 .4em}
.prose p,.prose ul,.prose ol{margin:0 0 1.1em}
.prose li{margin-bottom:.35em}
.prose ul li::marker{color:var(--teal)}
.prose blockquote{margin:1.4em 0;padding:14px 18px;border-left:3px solid var(--teal);background:var(--glass);border-radius:0 8px 8px 0}
.prose blockquote p:last-child{margin:0}
.prose table{width:100%;border-collapse:collapse;margin:1.2em 0;font-size:.95rem}
.prose th,.prose td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
.prose th{background:var(--soft);color:var(--navy)}
.prose code{font-family:var(--mono);background:var(--soft);padding:1px 5px;border-radius:4px;font-size:.9em}
.prose hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.home-prose{max-width:820px}
.home-prose h2:first-child{border-top:0;margin-top:0}
.tags a,.tags span{margin-right:8px;font-size:.88rem}
.note{margin-top:2.2em;border:1px dashed var(--line);border-radius:8px;padding:12px 16px;font-size:.88rem;color:var(--muted);background:var(--soft)}
.note p{margin:0}
/* footer */
.foot{background:var(--navy);color:#c9d6e6;margin-top:40px;padding:38px 0 18px;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:32px 32px}
.foot-inner{display:grid;grid-template-columns:1fr 1.2fr;gap:30px}
.foot .wordmark{color:#fff}.foot .wordmark b{color:var(--teal2)}
.foot-about p{font-size:.92rem;max-width:44ch}
.footlinks{list-style:none;padding:0;margin:0;columns:2;font-size:.92rem}
.footlinks li{margin-bottom:6px}
.foot a{color:#e5eef7;text-decoration:none}.foot a:hover{color:var(--teal2)}
.copy{border-top:1px solid rgba(255,255,255,.12);padding-top:14px;margin-top:22px;font-size:.84rem;color:#9fb1c7}
@media(max-width:700px){.foot-inner{grid-template-columns:1fr}body{font-size:16px}}