:root{
  --ink:#0A1628;--text:#3B4555;--muted:#6B7585;--faint:#98A1B0;
  --line:#E6E9EF;--line-2:#D5DAE3;--bg:#FFFFFF;--soft:#F6F8FB;
  --blue:#3DBCF8;--blue-hover:#58C5F9;--blue-deep:#0788C5;--blue-ink:#0670A2;--blue-50:#E9F7FE;--blue-100:#CEEEFD;
  --green:#58CC02;--green-ink:#3F7F00;
  --max:1140px;--ease:cubic-bezier(.2,.8,.2,1);
  --shadow:0 1px 2px rgba(10,22,40,.04),0 8px 24px -8px rgba(10,22,40,.1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--text);font-family:Figtree,ui-sans-serif,system-ui,sans-serif;font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-family:Outfit,sans-serif;color:var(--ink);font-weight:700;letter-spacing:-.02em;line-height:1.15}
a{color:var(--blue-deep);text-decoration:none}
a:hover{text-decoration:underline}
img{display:block;max-width:100%}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.mono{font-family:"Geist Mono",ui-monospace,monospace;font-size:12.5px;letter-spacing:.08em;text-transform:uppercase}

/* nav */
nav.top{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:saturate(1.6) blur(12px);border-bottom:1px solid var(--line)}
nav.top .wrap{display:flex;align-items:center;justify-content:space-between;height:66px;gap:16px}
nav.top .brand img{height:34px;width:auto}
nav.top ul{display:flex;gap:4px;list-style:none}
nav.top ul a{display:block;padding:8px 13px;border-radius:9px;color:var(--text);font-weight:600;font-size:15px}
nav.top ul a:hover{background:var(--soft);color:var(--ink);text-decoration:none}
nav.top .cta{background:var(--blue);color:#fff;font-weight:700;font-size:14.5px;padding:9px 18px;border-radius:11px;box-shadow:0 2px 0 var(--blue-deep)}
nav.top .cta:hover{background:var(--blue-hover);text-decoration:none}
.burger{display:none;width:40px;height:40px;border:1px solid var(--line-2);border-radius:10px;background:#fff;font-size:18px;cursor:pointer}

/* blog hero */
.b-hero{background:linear-gradient(180deg,var(--blue-50),#fff);border-bottom:1px solid var(--line)}
.b-hero .wrap{padding:60px 24px 48px;text-align:center}
.b-hero .mono{color:var(--blue-ink)}
.b-hero h1{font-size:clamp(34px,5vw,54px);margin:14px 0 0}
.b-hero p{font-size:19px;color:var(--text);max-width:620px;margin:16px auto 0}
.cats{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:28px}
.cats a{font-weight:700;font-size:14px;padding:8px 16px;border-radius:999px;border:1.5px solid var(--line-2);background:#fff;color:var(--ink)}
.cats a:hover{border-color:var(--blue);color:var(--blue-deep);text-decoration:none}
.cats a.on{background:var(--ink);border-color:var(--ink);color:#fff}

/* grid */
.b-main{padding:56px 0 80px}
.feature{display:grid;grid-template-columns:1.15fr 1fr;gap:34px;align-items:center;border:1.5px solid var(--line);border-radius:24px;overflow:hidden;background:#fff;box-shadow:var(--shadow);margin-bottom:48px}
.feature .thumb{min-height:320px}
.feature .fc{padding:40px}
.feature .tag,.card .tag{display:inline-block;font:700 12px "Geist Mono",monospace;letter-spacing:.08em;text-transform:uppercase;color:var(--blue-ink);background:var(--blue-50);padding:5px 11px;border-radius:999px}
.feature h2{font-size:clamp(26px,3vw,36px);margin:16px 0 10px}
.feature p{color:var(--text)}
.feature .meta,.card .meta{display:flex;gap:10px;align-items:center;margin-top:18px;font-size:13.5px;color:var(--muted)}
.feature .readmore{display:inline-flex;align-items:center;gap:7px;margin-top:22px;font-weight:700;color:var(--blue-deep)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{display:flex;flex-direction:column;border:1.5px solid var(--line);border-radius:20px;overflow:hidden;background:#fff;transition:transform .25s var(--ease),box-shadow .25s}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card .thumb{aspect-ratio:16/9}
.card .cc{padding:22px;display:flex;flex-direction:column;flex:1}
.card h3{font-size:20px;margin:12px 0 8px;line-height:1.25}
.card h3 a{color:var(--ink)}.card h3 a:hover{color:var(--blue-deep);text-decoration:none}
.card p{font-size:14.5px;color:var(--muted);flex:1}
.thumb{position:relative;display:grid;place-items:center;overflow:hidden}
.thumb .glyph{width:40%;max-width:120px;opacity:.95}
.thumb .grid-bg{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.14) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.14) 1px,transparent 1px);background-size:26px 26px;mask-image:radial-gradient(circle at 50% 50%,#000,transparent 72%);-webkit-mask-image:radial-gradient(circle at 50% 50%,#000,transparent 72%)}

/* article */
.art{padding:44px 0 72px}
.crumbs{font-size:13.5px;color:var(--muted);margin-bottom:22px}
.crumbs a{color:var(--muted)}
.art-head{max-width:760px;margin:0 auto 10px}
.art-head .tag{display:inline-block;font:700 12px "Geist Mono",monospace;letter-spacing:.08em;text-transform:uppercase;color:var(--blue-ink);background:var(--blue-50);padding:5px 11px;border-radius:999px}
.art-head h1{font-size:clamp(30px,4.4vw,46px);margin:16px 0 14px}
.art-head .dek{font-size:20px;color:var(--text)}
.art-byline{display:flex;align-items:center;gap:12px;max-width:760px;margin:22px auto 0;padding-bottom:22px;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted)}
.art-byline img{width:40px;height:40px;border-radius:50%;background:var(--blue-50);padding:4px}
.art-byline b{color:var(--ink)}
.art-cover{max-width:860px;margin:30px auto 0;border-radius:20px;overflow:hidden;aspect-ratio:21/9}
.art-body{max-width:720px;margin:36px auto 0;font-size:18px}
.art-body h2{font-size:28px;margin:38px 0 14px}
.art-body h3{font-size:21px;margin:28px 0 10px}
.art-body p{margin:0 0 18px}
.art-body ul,.art-body ol{margin:0 0 18px 22px}
.art-body li{margin:6px 0}
.art-body a{font-weight:600;text-decoration:underline}
.art-body strong{color:var(--ink)}
.art-body blockquote{margin:24px 0;padding:16px 22px;border-left:4px solid var(--blue);background:var(--blue-50);border-radius:0 12px 12px 0;color:var(--ink);font-size:18px}
.keyfacts{margin:28px 0;padding:22px 24px;border:1.5px solid var(--blue-100);background:var(--blue-50);border-radius:16px}
.keyfacts b{font-family:Outfit;font-size:16px;color:var(--ink);display:block;margin-bottom:8px}
.keyfacts ul{margin:0 0 0 20px}.keyfacts li{margin:5px 0;font-size:16px}
.faq{max-width:720px;margin:48px auto 0}
.faq h2{font-size:28px;margin-bottom:12px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;padding:20px 0;font-family:Outfit;font-weight:700;font-size:18px;color:var(--ink);display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--blue-deep);font-size:22px;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 0 20px;color:var(--text)}
.cta-box{max-width:720px;margin:52px auto 0;text-align:center;background:var(--blue);border-radius:24px;padding:44px 28px;color:#fff}
.cta-box h2{color:#fff;font-size:30px}
.cta-box p{margin:12px auto 22px;max-width:460px;opacity:.95}
.cta-box a{display:inline-block;background:#fff;color:var(--blue-deep);font-weight:700;padding:14px 28px;border-radius:14px;box-shadow:0 3px 0 rgba(6,112,162,.4)}
.cta-box a:hover{text-decoration:none;background:#F0FAFF}
.related{max-width:860px;margin:60px auto 0}
.related h2{font-size:24px;margin-bottom:20px}
.related .grid{grid-template-columns:repeat(3,1fr)}

/* footer */
footer{border-top:1px solid var(--line);padding:50px 0 40px;color:var(--muted);font-size:15px;margin-top:40px}
footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}
footer h4{color:var(--ink);font-size:14px;margin-bottom:12px}
footer ul{list-style:none;display:grid;gap:8px}
footer a{color:var(--muted)}footer a:hover{color:var(--ink)}
footer .bottom{margin-top:40px;padding-top:22px;border-top:1px solid var(--line);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:14px}

@media (max-width:900px){
  nav.top ul{display:none}
  .feature{grid-template-columns:1fr}.feature .thumb{min-height:200px}
  .grid,.related .grid{grid-template-columns:1fr 1fr}
  footer .cols{grid-template-columns:1fr 1fr}
}
@media (max-width:620px){
  .grid,.related .grid{grid-template-columns:1fr}
  .art-body{font-size:17px}
  footer .cols{grid-template-columns:1fr}
}