:root{
  --ink:#0E1726; --ink-2:#16233A; --ink-line:#263A57;
  --on-ink:#EDF1F8; --on-ink-muted:#A3B1C7;
  --paper:#F5F6F9; --surface:#FFFFFF; --line:#DDE2EC;
  --text:#121B2B; --muted:#55607A;
  --teal:#1F4FC4; --teal-deep:#163C99; --teal-soft:#E4EBFB;
  --amber:#F2A91E; --amber-soft:#FDF1D8; --amber-ink:#7A5208;
  --display:"Instrument Serif","Times New Roman",Georgia,serif;
  --body:"Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
  color-scheme:light;
}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--text);font-family:var(--body);font-size:17px;line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:var(--teal)}
img{max-width:100%}
.wrap{max-width:1180px;margin:0 auto;padding-inline:20px}
.narrow{max-width:740px;margin:0 auto;padding-inline:20px}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--teal)}
h1,h2,h3{text-wrap:balance}
.btn{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:15px;text-decoration:none;border-radius:999px;padding:14px 22px}
.btn-amber{background:var(--amber);color:var(--ink)}
.btn-amber:hover{background:#F6B940}
.btn:focus-visible,a:focus-visible{outline:3px solid var(--amber);outline-offset:3px}

/* nav */
.nav{position:sticky;top:0;z-index:20;background:rgba(14,23,38,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--ink-line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--on-ink);text-decoration:none;font-weight:800;font-size:18px}
.brand img{width:40px;height:40px;object-fit:contain}
.nav ul{display:flex;gap:26px;list-style:none;margin:0;padding:0}
.nav ul a{color:var(--on-ink-muted);text-decoration:none;font-size:14px;font-weight:600}
.nav ul a:hover,.nav ul a[aria-current]{color:var(--on-ink)}
.nav .btn{padding:10px 16px;font-size:14px}
@media (max-width:860px){.nav ul{display:none}}

/* blog index */
.bhead{background:var(--ink);color:var(--on-ink);padding-block:72px 64px}
.bhead .eyebrow{color:var(--amber)}
.bhead h1{font-family:var(--display);font-weight:400;font-size:clamp(40px,6vw,68px);line-height:1;margin:14px 0 0}
.bhead p{color:var(--on-ink-muted);font-size:18px;max-width:60ch;margin:16px 0 0}
.posts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;padding-block:56px 80px}
@media (max-width:760px){.posts{grid-template-columns:minmax(0,1fr)}}
.post{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:28px;display:flex;flex-direction:column;gap:12px;text-decoration:none;color:var(--text);transition:border-color .15s ease, transform .15s ease}
.post:hover{border-color:var(--teal);transform:translateY(-2px)}
.post h2{font-family:var(--display);font-weight:400;font-size:30px;line-height:1.1;margin:0}
.post p{margin:0;color:var(--muted);font-size:15.5px}
.post .more{margin-top:auto;font-weight:700;color:var(--teal);font-size:14.5px}
.meta{font-size:13px;color:var(--muted)}

/* article */
.ahead{background:var(--ink);color:var(--on-ink);padding-block:64px 56px}
.ahead .eyebrow{color:var(--amber)}
.ahead h1{font-family:var(--display);font-weight:400;font-size:clamp(36px,5.4vw,58px);line-height:1.04;margin:14px 0 0}
.ahead .meta{color:var(--on-ink-muted);margin-top:18px}
.back{display:inline-block;color:var(--on-ink-muted);text-decoration:none;font-size:14px;font-weight:600;margin-bottom:22px}
.back:hover{color:var(--on-ink)}
article.body{padding-block:48px 24px}
article.body h2{font-family:var(--display);font-weight:400;font-size:clamp(28px,3.6vw,36px);line-height:1.15;margin:44px 0 12px}
article.body h3{font-size:19px;margin:32px 0 8px}
article.body p{margin:0 0 18px}
article.body ul,article.body ol{margin:0 0 20px;padding-left:22px}
article.body li{margin-bottom:8px}
article.body ul.check{list-style:none;padding-left:0}
article.body ul.check li{display:flex;gap:12px}
article.body ul.check li::before{content:"";flex:none;width:16px;height:16px;margin-top:6px;border:2px solid var(--teal);border-radius:4px}
.table-wrap{overflow-x:auto;margin:0 0 20px}
table{width:100%;border-collapse:collapse;font-size:15.5px;background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden}
th,td{text-align:left;padding:12px 16px;border-bottom:1px solid var(--line)}
th{background:var(--teal-soft);color:var(--teal-deep);font-size:13px;letter-spacing:.04em;text-transform:uppercase}
code{font-family:var(--mono);font-size:.88em;background:var(--teal-soft);color:var(--teal-deep);padding:2px 6px;border-radius:5px}
.cta{background:linear-gradient(135deg,var(--teal-deep),var(--ink));color:var(--on-ink);border-radius:20px;padding:36px;margin:40px 0 72px}
.cta h2{font-family:var(--display);font-weight:400;font-size:32px;line-height:1.1;margin:0}
.cta p{color:var(--on-ink-muted);margin:12px 0 22px}
.cta .line{font-size:14.5px;color:var(--on-ink-muted);margin-top:14px}
.cta .line b{color:var(--on-ink);font-family:var(--mono);font-weight:500}
.related{border-top:1px solid var(--line);padding-block:32px 8px}
footer{padding-block:40px 56px;color:var(--muted);font-size:13.5px;border-top:1px solid var(--line)}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px}