:root{--bg:#ffffff;--bg-soft:#F5F6F8;--navy:#1B365D;--navy-deep:#0E2238;--ink:#0f0f1a;--muted:#6A7686;--line:#E7E9EE;--accent:#FF6B35;--accent-ink:#e55520;--radius:16px;--max:1180px;--ease:cubic-bezier(.16,1,.3,1)}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:'Plus Jakarta Sans',system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3,h4{font-family:'Montserrat',system-ui,sans-serif;line-height:1.1;letter-spacing:-.02em;font-weight:800}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
::selection{background:var(--accent);color:#fff}
.container{max-width:var(--max);margin:0 auto;padding:0 28px}
.eyebrow{display:inline-flex;align-items:center;gap:12px;font-family:'Montserrat',sans-serif;font-weight:700;font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent)}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--accent);border-radius:2px}
/* nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:16px 0;background:rgba(255,255,255,.9);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);box-shadow:0 1px 0 var(--line);transition:padding .35s var(--ease),box-shadow .35s var(--ease)}
.nav.scrolled{padding:11px 0;box-shadow:0 8px 26px -18px rgba(5,8,20,.4)}
.nav-inner{max-width:var(--max);margin:0 auto;padding:0 28px;display:flex;align-items:center;justify-content:space-between;position:relative}
.brand{font-family:'Montserrat',sans-serif;font-weight:900;font-size:21px;letter-spacing:-.03em;color:var(--ink)}
.brand span{color:var(--accent)}
.nav-links{display:flex;align-items:center;gap:28px;list-style:none}
.nav-links a{font-size:14px;font-weight:600;color:var(--muted);transition:color .25s var(--ease)}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--ink)}
.nav-cta{padding:10px 20px;border-radius:999px;background:var(--accent);color:#fff !important;font-weight:700;font-size:13px;transition:background .2s,transform .2s}
.nav-cta:hover{background:var(--accent-ink);transform:translateY(-1px)}
.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;background:none;border:0;cursor:pointer;padding:0}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--ink);border-radius:2px;transition:transform .3s var(--ease),opacity .2s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:900px){
  .nav-toggle{display:flex}
  .nav-links{position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:rgba(255,255,255,.98);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);padding:6px 0 10px;box-shadow:0 24px 48px -20px rgba(5,8,20,.35);border-top:1px solid var(--line);clip-path:inset(0 0 100% 0);opacity:0;pointer-events:none;transition:clip-path .38s var(--ease),opacity .25s}
  .nav-links.open{clip-path:inset(0 0 0 0);opacity:1;pointer-events:auto}
  .nav-links a{color:var(--ink) !important;font-size:15px;padding:13px 28px;display:block}
  .nav-links a:hover{background:var(--bg-soft)}
  .cta-li{padding:10px 28px 4px}
  .nav-cta{display:block;text-align:center}
}
/* cat pill + topics */
.cat-pill{display:inline-block;font-family:'Montserrat',sans-serif;font-weight:700;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);background:rgba(255,107,53,.1);padding:5px 12px;border-radius:999px}
.cat-pill.topic-dm{color:var(--accent-ink);background:rgba(255,107,53,.1)}
.cat-pill.topic-ai{color:#1B365D;background:rgba(27,54,93,.1)}
.cat-pill.topic-fh{color:#0E7C7B;background:rgba(14,124,123,.12)}
a.cat-pill{transition:transform .15s var(--ease)}
a.cat-pill:hover{transform:translateY(-1px)}
/* topic filter bar */
.topic-filter{display:flex;flex-wrap:wrap;gap:10px;max-width:var(--max);margin:0 auto;padding:30px 28px 0}
.tf-pill{font-family:'Montserrat',sans-serif;font-weight:700;font-size:13px;letter-spacing:.01em;padding:9px 18px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--muted);cursor:pointer;transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease)}
.tf-pill:hover{color:var(--ink);border-color:var(--ink)}
.tf-pill.is-active{background:var(--ink);color:#fff;border-color:var(--ink)}
.tf-pill.topic-dm.is-active{background:var(--accent);border-color:var(--accent)}
.tf-pill.topic-ai.is-active{background:#1B365D;border-color:#1B365D}
.tf-pill.topic-fh.is-active{background:#0E7C7B;border-color:#0E7C7B}
/* blog index hero */
.blog-hero{padding:150px 0 50px;background:var(--navy-deep);color:#fff}
.blog-hero .eyebrow{color:#fff}
.blog-hero .eyebrow::before{background:rgba(255,255,255,.6)}
.blog-hero h1{font-size:clamp(34px,5.4vw,62px);font-weight:900;margin:18px 0 0;max-width:16ch;letter-spacing:-.03em}
.blog-hero p{color:rgba(255,255,255,.72);font-size:clamp(16px,1.5vw,19px);margin-top:18px;max-width:58ch}
/* card grid */
.blog-list{padding:60px 28px 90px}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;transition:transform .25s var(--ease),box-shadow .25s var(--ease)}
.card:hover{transform:translateY(-4px);box-shadow:0 22px 50px -24px rgba(5,8,20,.28)}
.card-img{aspect-ratio:3/2;overflow:hidden;background:var(--bg-soft)}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.card:hover .card-img img{transform:scale(1.05)}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:11px;flex:1}
.card-body h2{font-size:20px;line-height:1.18;font-weight:800}
.card-body p{font-size:14.5px;color:var(--muted);line-height:1.6}
.card-meta{margin-top:auto;font-family:'Montserrat',sans-serif;font-weight:700;font-size:13px;color:var(--accent-ink)}
@media(max-width:920px){.card-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.card-grid{grid-template-columns:1fr}}
/* article */
.article{padding:130px 0 40px;background:#fff}
.article-wrap{max-width:760px;margin:0 auto;padding:0 28px}
.back{display:inline-block;font-family:'Montserrat',sans-serif;font-weight:700;font-size:13px;color:var(--muted);margin-bottom:22px;transition:color .2s}
.back:hover{color:var(--accent)}
.article h1{font-size:clamp(30px,4.6vw,50px);font-weight:900;letter-spacing:-.03em;margin:16px 0 0;line-height:1.07}
.byline{display:flex;flex-wrap:wrap;align-items:center;gap:10px;color:var(--muted);font-size:14px;margin-top:18px;font-weight:500}
.byline .dot{color:var(--line)}
.hero-fig{margin:32px 0 8px;border-radius:var(--radius);overflow:hidden;background:var(--bg-soft)}
.hero-fig img{width:100%;height:auto;aspect-ratio:3/2;object-fit:cover}
.tldr{background:var(--bg-soft);border-left:3px solid var(--accent);border-radius:0 12px 12px 0;padding:20px 24px;margin:30px 0 6px}
.tldr-h{display:block;font-family:'Montserrat',sans-serif;font-weight:800;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-ink);margin-bottom:7px}
.tldr p{font-size:16px;color:var(--ink);line-height:1.6;font-weight:500}
.prose{margin-top:30px}
.prose p{font-size:17.5px;line-height:1.75;color:#1c1c28;margin:0 0 22px}
.prose h2{font-size:25px;font-weight:800;letter-spacing:-.02em;margin:40px 0 16px;line-height:1.15}
.prose ul{margin:0 0 22px;padding-left:22px}
.prose li{font-size:17.5px;line-height:1.7;color:#1c1c28;margin-bottom:9px}
.prose strong{font-weight:700;color:var(--ink)}
.prose em{font-style:italic}
.prose blockquote{margin:28px 0;padding:6px 0 6px 26px;border-left:4px solid var(--accent);font-family:'Montserrat',sans-serif;font-weight:700;font-size:22px;line-height:1.3;letter-spacing:-.02em;color:var(--navy-deep)}
/* faq */
.faq{margin:48px 0 0;border-top:1px solid var(--line);padding-top:34px}
.faq>h2{font-size:24px;font-weight:800;margin-bottom:20px}
.faq-item{padding:18px 0;border-bottom:1px solid var(--line)}
.faq-item h3{font-size:18px;font-weight:700;margin-bottom:8px;color:var(--navy-deep)}
.faq-item p{font-size:16px;color:var(--muted);line-height:1.65}
/* cta */
.cta-box{margin:46px 0 0;background:var(--navy-deep);color:#fff;border-radius:var(--radius);padding:38px 34px;text-align:center}
.cta-box h2{font-size:26px;font-weight:800;margin-bottom:10px}
.cta-box p{color:rgba(255,255,255,.74);font-size:16px;max-width:46ch;margin:0 auto 22px}
.cta-row{display:flex;gap:13px;justify-content:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;font-family:'Montserrat',sans-serif;font-weight:700;font-size:14.5px;padding:14px 26px;border-radius:999px;cursor:pointer;border:0;transition:transform .2s var(--ease),background .2s}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 30px -8px rgba(255,107,53,.45)}
.btn-primary:hover{background:var(--accent-ink);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.3)}
.btn-ghost:hover{border-color:#fff;transform:translateY(-2px)}
/* related */
.related{margin:56px 0 0;border-top:1px solid var(--line);padding-top:34px}
.related>h2{font-size:22px;font-weight:800;margin-bottom:20px}
.rel-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.rel-card{border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:transform .25s var(--ease),box-shadow .25s var(--ease)}
.rel-card:hover{transform:translateY(-3px);box-shadow:0 18px 40px -22px rgba(5,8,20,.26)}
.rel-card img{width:100%;aspect-ratio:3/2;object-fit:cover}
.rel-body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:9px}
.rel-body h3{font-size:17px;line-height:1.2;font-weight:800}
@media(max-width:560px){.rel-grid{grid-template-columns:1fr}}
/* footer */
.footer{background:#060608;color:#c3cede;padding:64px 0 34px;margin-top:80px}
.footer a{color:#c3cede;transition:color .18s}
.footer a:hover{color:var(--accent)}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}
.foot-brand{font-family:'Montserrat',sans-serif;font-weight:900;font-size:23px;color:#fff;letter-spacing:-.03em}
.foot-brand span{color:var(--accent)}
.foot-tag{margin-top:14px;font-size:14.5px;line-height:1.65;max-width:42ch;color:#8b97a8}
.foot-h{font-family:'Montserrat',sans-serif;font-weight:700;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:#fff;margin-bottom:14px}
.foot-col ul{list-style:none;display:flex;flex-direction:column;gap:10px;font-size:14.5px}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px;margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:#8b97a8}
.foot-bottom ul{list-style:none;display:flex;gap:20px}
@media(max-width:760px){.foot-grid{grid-template-columns:1fr 1fr}.foot-grid>div:first-child{grid-column:1/-1}}
@media(max-width:480px){.foot-grid{grid-template-columns:1fr}}