/* OAList blog. Shares the landing page's design tokens so /blog does not read
   like a bolted-on subdomain. Versioned filename because vercel.json sets
   immutable year-long caching on .css, so a change means a new file. */
:root {
  --bg:#0a0e1a; --bg-2:#0f1524; --bg-3:#161e31;
  --card:#121a2d; --card-h:#16203a;
  --line:#1f2940; --line-2:#2a3654;
  --ink:#e6ebf7; --ink-2:#94a0bd; --ink-3:#5d6884;
  --brand:#3b82f6; --brand-2:#60a5fa; --brand-3:#93c5fd;
  --brand-dim:rgba(59,130,246,0.15);
  --ok:#10b981; --warn:#f59e0b; --danger:#ef4444;
  --purple:#a855f7; --gradient: linear-gradient(135deg,#3b82f6 0%, #a855f7 100%);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;font-feature-settings:"cv11","ss01"}
.mono{font-family:'JetBrains Mono',ui-monospace,monospace}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

/* nav */
.nav{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:1200px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-0.01em}
.brand-mark{width:30px;height:30px;border-radius:8px;background:var(--gradient);display:grid;place-items:center;color:#fff;font-weight:800;font-size:15px}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{color:var(--ink-2);font-size:14px;font-weight:500}
.nav-links a:hover{color:var(--ink)}
@media (max-width:720px){.nav-links a:not(.btn){display:none}}
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:10px;font-weight:600;font-size:14px;cursor:pointer;border:none;font-family:inherit;transition:all 160ms ease;white-space:nowrap}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-2)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line-2)}
.btn-ghost:hover{background:var(--card-h)}
.btn-lg{padding:16px 28px;font-size:16px;border-radius:12px}

/* article shell */
.wrap{max-width:760px;margin:0 auto;padding:0 24px}
.crumb{font-size:12px;color:var(--ink-3);letter-spacing:.06em;text-transform:uppercase;font-weight:700;margin-bottom:18px}
.crumb a:hover{color:var(--brand-2)}
.post-head{padding:56px 0 30px;border-bottom:1px solid var(--line)}
.post-head h1{font-size:44px;font-weight:800;letter-spacing:-0.025em;line-height:1.12}
@media (max-width:720px){.post-head h1{font-size:32px}}
.post-meta{margin-top:18px;font-size:14px;color:var(--ink-3);display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.post-meta .dot{color:var(--line-2)}

/* prose */
.prose{padding:38px 0 20px;font-size:17.5px;line-height:1.72;color:var(--ink-2)}
.prose > p:first-child{font-size:19px;color:var(--ink);border-left:3px solid var(--brand);padding-left:20px;background:linear-gradient(90deg,var(--brand-dim),transparent);padding-top:14px;padding-bottom:14px;border-radius:0 8px 8px 0}
.prose p{margin:0 0 22px}
.prose h2{font-size:28px;font-weight:800;color:var(--ink);letter-spacing:-0.02em;line-height:1.2;margin:44px 0 16px;scroll-margin-top:80px}
.prose h3{font-size:20px;font-weight:700;color:var(--ink);letter-spacing:-0.01em;margin:30px 0 12px;scroll-margin-top:80px}
.prose strong{color:var(--ink);font-weight:700}
.prose a{color:var(--brand-2);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--line-2)}
.prose a:hover{text-decoration-color:var(--brand-2)}
.prose ul,.prose ol{margin:0 0 22px;padding-left:22px}
.prose li{margin:0 0 10px}
.prose blockquote{margin:26px 0;padding:18px 22px;border-left:3px solid var(--purple);background:var(--card);border-radius:0 10px 10px 0;color:var(--ink);font-size:18px}
.prose code{font-family:'JetBrains Mono',ui-monospace,monospace;font-size:.88em;background:var(--bg-3);padding:2px 6px;border-radius:5px;color:var(--brand-3)}
.prose hr{border:0;border-top:1px solid var(--line);margin:38px 0}

/* tables scroll on mobile instead of blowing out the page */
.table-scroll{overflow-x:auto;margin:0 0 26px;border:1px solid var(--line);border-radius:12px;-webkit-overflow-scrolling:touch}
.prose table{border-collapse:collapse;width:100%;font-size:15px;min-width:520px}
.prose th,.prose td{text-align:left;padding:12px 16px;border-bottom:1px solid var(--line)}
.prose th{background:var(--bg-3);color:var(--ink);font-weight:700;font-size:13px;letter-spacing:.03em;text-transform:uppercase}
.prose tbody tr:last-child td{border-bottom:none}
.prose td:first-child{color:var(--ink);font-weight:600}

/* faq */
.faq{margin:44px 0 0;border-top:1px solid var(--line);padding-top:34px}
.faq h2{font-size:28px;font-weight:800;color:var(--ink);margin-bottom:20px;letter-spacing:-0.02em}
.faq-item{border:1px solid var(--line);border-radius:12px;padding:20px 22px;margin-bottom:12px;background:var(--card)}
.faq-item h3{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:9px}
.faq-item p{margin:0;font-size:16px;line-height:1.65}

/* cta */
.cta{margin:46px 0;padding:32px;border-radius:16px;border:1px solid var(--brand);background:linear-gradient(135deg,rgba(59,130,246,.13),rgba(168,85,247,.07))}
.cta h3{font-size:23px;font-weight:800;color:var(--ink);letter-spacing:-0.02em;margin-bottom:10px}
.cta p{margin-bottom:20px;font-size:16px}

/* related */
.related{border-top:1px solid var(--line);padding:34px 0 0;margin-top:44px}
.related h2{font-size:22px;font-weight:800;color:var(--ink);margin-bottom:18px}
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.pcard{display:block;border:1px solid var(--line);border-radius:14px;padding:22px;background:var(--card);transition:all 160ms ease}
.pcard:hover{background:var(--card-h);border-color:var(--line-2);transform:translateY(-2px)}
.pcard .tag{font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--brand-2);margin-bottom:10px}
.pcard h3{font-size:17px;font-weight:700;color:var(--ink);line-height:1.32;margin-bottom:9px;letter-spacing:-0.01em}
.pcard p{font-size:14.5px;color:var(--ink-3);line-height:1.55;margin:0}

/* index page */
.blog-hero{padding:64px 0 40px;border-bottom:1px solid var(--line)}
.blog-hero .eyebrow{font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--brand-2);margin-bottom:12px}
.blog-hero h1{font-size:50px;font-weight:800;letter-spacing:-0.03em;line-height:1.08}
@media (max-width:720px){.blog-hero h1{font-size:35px}}
.blog-hero p{margin-top:16px;font-size:19px;color:var(--ink-2);line-height:1.55;max-width:640px}
.list{padding:40px 0 70px}
.wide{max-width:1080px;margin:0 auto;padding:0 24px}

/* footer */
footer{border-top:1px solid var(--line);padding:34px 0;margin-top:60px}
.footer-inner{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:var(--ink-3)}
.footer-inner a:hover{color:var(--ink-2)}