:root{
  --ink:#0E1621; --ink-2:#1B2633; --paper:#F5F3EE; --paper-2:#ECE8DF;
  --text:#1A1F27; --muted:#5B6472; --line:#D9D4C8;
  --signal:#E3263F; --signal-ink:#B81B31; --teal:#0F6E6A;
  --radius:14px; --max:1120px; --read:720px;
}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--text);font:400 17px/1.7 "IBM Plex Sans",system-ui,sans-serif;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:"Space Grotesk",sans-serif;line-height:1.12;letter-spacing:-.02em}
a{color:inherit}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.eyebrow{font:600 .78rem/1 "IBM Plex Sans";letter-spacing:.14em;text-transform:uppercase;color:var(--signal)}

header.site{position:sticky;top:0;z-index:10;background:rgba(14,22,33,.94);backdrop-filter:blur(8px);color:#fff}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font:700 1.15rem "Space Grotesk";letter-spacing:.02em;text-decoration:none}
.logo span{color:var(--signal)}
nav a{font-size:.92rem;text-decoration:none;margin-left:24px;opacity:.82;transition:opacity .2s}
nav a:hover,nav a:focus-visible,nav a[aria-current]{opacity:1}
@media(max-width:720px){nav a:not(.cta){display:none}}
.cta{background:var(--signal);padding:9px 16px;border-radius:999px;opacity:1!important;font-weight:600}

.page-head{background:var(--ink);color:#fff;padding:72px 0 64px}
.page-head h1{font-size:clamp(2rem,1.2rem + 3.4vw,3.4rem);max-width:20ch;margin:16px 0 18px}
.page-head p{color:#C9D1DC;max-width:60ch;font-size:1.08rem}
.page-head .meta{margin-top:22px;font-size:.88rem;color:#9AA6B5}
.crumb{font-size:.86rem;color:#9AA6B5}
.crumb a{color:#C9D1DC;text-underline-offset:3px}

/* index list */
.posts{padding:64px 0 96px;display:grid;gap:18px}
.post{display:grid;grid-template-columns:140px 1fr;gap:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;text-decoration:none;transition:transform .25s,box-shadow .25s}
.post:hover,.post:focus-visible{transform:translateY(-3px);box-shadow:0 14px 30px -18px rgba(14,22,33,.35)}
.post .tag{font:600 .72rem "IBM Plex Sans";letter-spacing:.08em;text-transform:uppercase;color:var(--teal)}
.post h2{font-size:1.4rem;margin:0 0 8px}
.post p{color:var(--muted);font-size:.98rem}
.post .more{display:inline-block;margin-top:12px;color:var(--signal);font-weight:600;font-size:.92rem}
@media(max-width:640px){.post{grid-template-columns:1fr;gap:10px}}

/* article */
article.body{max-width:var(--read);margin:0 auto;padding:56px 20px 88px}
article.body h2{font-size:1.55rem;margin:44px 0 14px}
article.body p{margin:0 0 18px;color:#2E3540}
article.body ul,article.body ol{margin:0 0 20px 22px;color:#2E3540}
article.body li{margin-bottom:8px}
article.body strong{color:var(--text)}
article.body code{font:500 .9em ui-monospace,Consolas,monospace;background:var(--paper-2);padding:2px 6px;border-radius:5px}
.callout{border-left:3px solid var(--signal);background:#fff;padding:18px 20px;border-radius:0 10px 10px 0;margin:26px 0;color:#2E3540}
.flow{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:22px 0 28px;font-size:.9rem}
.flow span{background:var(--ink);color:#fff;padding:8px 12px;border-radius:8px}
.flow i{color:var(--muted);font-style:normal}
.next{border-top:1px solid var(--line);margin-top:48px;padding-top:24px;font-size:.96rem}
.next a{color:var(--signal);font-weight:600;text-underline-offset:3px}

footer{background:var(--ink-2);color:#9AA6B5;font-size:.88rem;padding:36px 0}
footer .wrap{display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between}
footer b{color:#fff}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto}}