:root{
  --ink:#111a30;
  --ink-soft:#4a5470;
  --bg:#f6f7fc;
  --paper:#ffffff;
  --navy:#0f1730;
  --navy-2:#1c2650;
  --accent:#4cc9f0;
  --accent-grad:linear-gradient(135deg,#4cc9f0,#4ade80);
  --accent-dark:#3b2fc9;
  --accent-soft:#eceefd;
  --on-accent:#0b1226;
  --line:#dfe2f0;
  --font-body:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-head:"Fraunces",Georgia,serif;
  --font-mono:"JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
  --radius:14px;
}
*{box-sizing:border-box}
body{margin:0;font-family:var(--font-body);color:var(--ink);background:var(--bg);line-height:1.65;font-size:17px}
a{color:var(--accent-dark)}
img,svg{max-width:100%;height:auto}
.wrap{width:min(1120px,100% - 32px);margin-inline:auto}

header.site{position:sticky;top:0;z-index:20;background:rgba(11,31,58,.94);backdrop-filter:blur(8px);color:#fff}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-head);font-weight:700;font-size:1.35rem;color:#fff;text-decoration:none}
.brand img{width:36px;height:36px;border-radius:9px;display:block}
nav.main{display:flex;align-items:center;gap:22px}
nav.main a{color:#cfdbea;text-decoration:none;font-size:.95rem;font-weight:500}
nav.main a:hover,nav.main a[aria-current]{color:#fff}
nav.main a.btn-small{background:var(--accent-grad);color:var(--on-accent);font-weight:600;padding:8px 14px;border-radius:999px}
@media(max-width:760px){nav.main a.hide-sm{display:none}}

.page-head{background:linear-gradient(160deg,var(--navy) 0%,var(--navy-2) 100%);color:#fff;padding:56px 0 52px}
.crumbs{font-family:var(--font-mono);font-size:.8rem;color:#9fb3cc;margin:0 0 14px}
.crumbs a{color:#cfdbea;text-decoration:none}
.crumbs a:hover{color:#fff}
.page-head h1{font-family:var(--font-head);font-size:clamp(2rem,4.6vw,3rem);line-height:1.12;margin:0 0 14px;letter-spacing:-.01em;max-width:22em}
.page-head .lead{font-size:1.12rem;color:#cfdbea;max-width:40em;margin:0}
.byline{margin:20px 0 0;font-size:.92rem;color:#9fb3cc}
.byline a{color:#fff}

.layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:48px;padding:48px 0 72px}
@media(max-width:960px){.layout{grid-template-columns:1fr;gap:32px}}

article.prose{max-width:46em;min-width:0}
.prose h2{font-family:var(--font-head);font-size:1.75rem;line-height:1.2;margin:2.2em 0 .5em;letter-spacing:-.005em}
.prose h3{font-size:1.15rem;margin:1.8em 0 .4em}
.prose h4{font-size:1rem;margin:1.5em 0 .3em}
.prose > :first-child{margin-top:0}
.prose p,.prose ul,.prose ol{margin:0 0 1.05em}
.prose li{margin:.3em 0}
.prose blockquote{margin:1.4em 0;padding:4px 0 4px 20px;border-left:4px solid var(--accent-dark);color:var(--ink-soft)}
.prose code{font-family:var(--font-mono);font-size:.86em;background:#e9eef4;padding:2px 6px;border-radius:5px;overflow-wrap:anywhere}
.prose pre{margin:0 0 1.3em;background:var(--navy);color:#d7e6f7;padding:16px 18px;border-radius:12px;overflow-x:auto;font-family:var(--font-mono);font-size:.86rem;line-height:1.55}
.prose pre code{background:none;padding:0;font-size:inherit;color:inherit;overflow-wrap:normal}
.table-wrap{overflow-x:auto;margin:0 0 1.4em;border:1px solid var(--line);border-radius:10px;background:var(--paper)}
.prose table{border-collapse:collapse;width:100%;font-size:.93rem}
.prose th,.prose td{text-align:left;vertical-align:top;padding:10px 12px;border-bottom:1px solid var(--line)}
.prose th{background:var(--accent-soft);font-weight:600}
.prose tr:last-child td{border-bottom:0}
.prose img{border-radius:10px}
.prose figure{margin:1.6em 0}
.prose figcaption{font-size:.9rem;color:var(--ink-soft);margin-top:8px}
.callout{background:var(--accent-soft);border:1px solid #c9cffa;border-radius:var(--radius);padding:18px 22px;margin:1.6em 0}
.callout > :last-child{margin-bottom:0}
.callout strong:first-child{display:block;margin-bottom:4px}
.note{font-size:.92rem;color:var(--ink-soft)}

aside.side{position:relative}
.side-box{position:sticky;top:88px;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px}
.side-box h2{font-family:var(--font-mono);font-weight:500;font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;color:var(--accent-dark);margin:0 0 10px}
.side-box ul{list-style:none;margin:0 0 18px;padding:0;display:grid;gap:8px;font-size:.94rem}
.side-box a{text-decoration:none}
.side-box a:hover{text-decoration:underline}
.side-box a[aria-current]{color:var(--ink);font-weight:600}
.side-box .btn{display:block;text-align:center}

.btn{display:inline-block;padding:12px 20px;border-radius:999px;font-weight:600;text-decoration:none;font-size:.98rem}
.btn-primary{background:var(--accent-grad);color:var(--on-accent)}
.btn-primary:hover{filter:brightness(1.08)}

.cards{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));margin:0 0 1.4em}
.cards a{display:block;text-decoration:none;color:inherit;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:20px 22px;transition:border-color .2s,transform .2s}
.cards a:hover{border-color:var(--accent);transform:translateY(-2px)}
.cards b{display:block;color:var(--accent-dark);margin-bottom:6px;font-size:1.02rem}
.cards span{font-size:.94rem;color:var(--ink-soft)}

.cta{background:var(--paper);border-top:1px solid var(--line);padding:56px 0}
.cta .wrap{display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between}
.cta h2{font-family:var(--font-head);font-size:1.6rem;margin:0 0 6px}
.cta p{margin:0;color:var(--ink-soft)}

footer{background:var(--navy);color:#b8c9de;padding:44px 0;font-size:.95rem}
footer .wrap{display:flex;flex-wrap:wrap;gap:20px;justify-content:space-between;align-items:center}
footer a{color:#fff}
footer .brand{font-size:1.15rem}
footer nav{display:flex;flex-wrap:wrap;gap:6px 16px}