/* Level X — blog + pages. Shares the tokens of the main site. */
:root{
  --bg:#070A12; --bg2:#0D1220; --panel:#111829; --line:#1F2940; --line2:#2C3854;
  --ink:#EEF2F8; --soft:#AEB8C8; --muted:#7A879C;
  --blue:#3B6DF0; --sky:#0EA5E9; --cyan:#22D3EE; --leak:#FF6A2B; --ok:#4ADE80;
  --grad:linear-gradient(100deg,#1D4ED8,#0EA5E9 45%,#22D3EE);
  --display:"Archivo","Arial Narrow",system-ui,sans-serif;
  --body:"Public Sans",system-ui,sans-serif;
  --label:"IBM Plex Mono",ui-monospace,monospace;
  --logo:"Sora",system-ui,sans-serif;
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--soft);font:16px/1.7 var(--body);-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto}
h1,h2,h3,h4{font-family:var(--display);color:var(--ink);margin:0;letter-spacing:-.02em;text-wrap:balance;font-stretch:112%}
h1,h2{letter-spacing:-.02em}
.wrap{max-width:1240px;margin:0 auto;padding-inline:32px}
@media (max-width:700px){.wrap{padding-inline:20px}}
.skip{position:absolute;left:-9999px}
.skip:focus{left:16px;top:16px;z-index:200;background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:8px}

/* header */
header.top{position:fixed;left:0;right:0;top:0;z-index:50;padding-top:env(safe-area-inset-top,0px);transition:background .3s,backdrop-filter .3s}
header.top.scrolled{background:rgba(7,10,18,.72);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;height:72px;gap:16px;max-width:none}
.lockup{display:flex;align-items:center;gap:10px}
.lockup svg{width:30px;height:30px;overflow:visible}
.wm{font:800 17px/1 var(--logo);letter-spacing:.06em;color:var(--ink)}
.links{display:flex;align-items:center;gap:26px;font:500 12px/1 var(--label);letter-spacing:.1em;text-transform:uppercase;color:var(--soft)}
.links a:hover{color:var(--ink)}
.links a[aria-current="page"]{color:var(--ink)}
.navbtn{border:1px solid var(--line2);border-radius:999px;padding:11px 18px;color:var(--ink)}
.navbtn:hover{border-color:var(--ink)}
@media (max-width:860px){.links a:not(.navbtn){display:none}}

main{padding-top:72px}

/* page heads */
.phead{padding:88px 0 40px;border-bottom:1px solid var(--line)}
.eyebrow{font:500 11px/1 var(--label);letter-spacing:.18em;text-transform:uppercase;color:var(--muted);margin:0 0 18px}
.phead h1{font-size:clamp(34px,5.4vw,64px);line-height:1.02}
.phead p.lede{margin:20px 0 0;max-width:62ch;font-size:clamp(16px,1.5vw,19px);color:var(--soft)}

/* post list */
.post-list{padding:8px 0 96px}
.post-row{display:block;padding:32px 0;border-bottom:1px solid var(--line);transition:border-color .25s}
.post-row:hover{border-color:var(--line2)}
.post-row .pr-meta{font:500 11px/1 var(--label);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.post-row .pr-title{display:block;margin:14px 0 0;font-family:var(--display);font-stretch:112%;color:var(--ink);font-size:clamp(22px,2.6vw,31px);line-height:1.12;letter-spacing:-.02em}
.post-row:hover .pr-title{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.post-row .pr-excerpt{display:block;margin:12px 0 0;max-width:72ch;color:var(--soft)}
.post-row .pr-more{display:inline-block;margin-top:16px;font:600 11px/1 var(--label);letter-spacing:.14em;text-transform:uppercase;color:var(--cyan)}

/* article */
.post{padding-bottom:96px}
.post-head{padding:88px 0 0;max-width:820px}
.post-head h1{font-size:clamp(32px,4.6vw,56px);line-height:1.04}
.post-head .dek{margin:20px 0 0;font-size:clamp(16px,1.5vw,19px);color:var(--soft);max-width:60ch}
.rule{height:1px;background:var(--line);margin:44px 0 0}

.prose{max-width:720px;font-size:17px;line-height:1.75;color:var(--soft)}
.prose>*{margin:0 0 22px}
.prose h2{margin:52px 0 16px;font-size:clamp(22px,2.4vw,29px);line-height:1.15}
.prose h3{margin:36px 0 12px;font-size:20px}
.prose strong{color:var(--ink);font-weight:600}
.prose em{color:var(--soft)}
.prose a{color:var(--ink);border-bottom:1px solid var(--line2);transition:border-color .2s,color .2s}
.prose a:hover{color:var(--cyan);border-color:var(--cyan)}
.prose ul,.prose ol{padding-left:22px}
.prose li{margin:0 0 10px}
.prose li::marker{color:var(--muted)}
.prose blockquote{margin:32px 0;padding:4px 0 4px 22px;border-left:2px solid var(--cyan);color:var(--ink);font-family:var(--display);font-stretch:112%;font-size:clamp(19px,2.1vw,24px);line-height:1.32;letter-spacing:-.01em}
.prose blockquote p{margin:0}
.prose code{font:500 14px/1.5 var(--label);background:var(--panel);border:1px solid var(--line);border-radius:5px;padding:2px 6px;color:var(--ink)}
.prose pre{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:18px;overflow:auto}
.prose pre code{background:none;border:0;padding:0}
.prose hr{border:0;height:1px;background:var(--line);margin:48px 0}
.prose h3+ul,.prose h3+ol{margin-top:-6px}
.prose input[type=checkbox]{accent-color:var(--cyan);margin-right:8px}
.prose ul:has(input[type=checkbox]){list-style:none;padding-left:0}

/* sources block */
.prose h3#sources,.prose h3:last-of-type{scroll-margin-top:96px}

/* post foot + cta */
.post-cta{max-width:720px;margin:56px 0 0;border:1px solid var(--line);border-radius:14px;background:linear-gradient(180deg,var(--panel),var(--bg2));padding:28px}
.post-cta h2{font-size:23px;margin:0 0 10px}
.post-cta p{margin:0 0 20px;color:var(--soft)}
.btn{display:inline-flex;align-items:center;gap:9px;background:var(--ink);color:var(--bg);border-radius:999px;padding:14px 24px;font:600 12px/1 var(--label);letter-spacing:.12em;text-transform:uppercase}
.btn:hover{background:var(--cyan)}
.post-foot{max-width:720px;margin:44px 0 0;font:500 12px/1 var(--label);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.post-foot a:hover{color:var(--ink)}

/* footer */
footer{border-top:1px solid var(--line);padding-block:30px 44px;font:500 12px/1.5 var(--label);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
footer .wrap{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:center;max-width:none}
footer .flinks{display:flex;gap:20px;align-items:center;flex-wrap:wrap}
footer a:hover{color:var(--ink)}

/* reveal */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .6s cubic-bezier(.2,.7,.2,1),transform .6s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}