:root{
  --bg:#FFFFFF;--panel:#F6F8FA;--ink:#14181B;--body:#333B41;--slate:#6B747A;
  --blue:#1A72A8;--blue-deep:#13567F;--hair:#E4E8EB;--sand:#F1F4F6;
  --display:"Fraunces",Georgia,serif;--ui:"Hanken Grotesk",system-ui,sans-serif;--mono:"IBM Plex Mono",monospace;
  --maxw:1180px;--rd:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--ui);color:var(--body);background:var(--bg);-webkit-font-smoothing:antialiased;line-height:1.65;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.025'/%3E%3C/svg%3E")}
a{color:var(--blue);text-decoration:none}a:hover{color:var(--blue-deep)}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 clamp(20px,5vw,44px)}

/* header */
.bnav{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.86);backdrop-filter:blur(12px);border-bottom:1px solid var(--hair)}
.bnav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.bbrand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;letter-spacing:.14em;font-size:17px}
.bbrand svg{width:28px;height:28px}
.bnav-links{display:flex;gap:24px;align-items:center}
.bnav-links a{color:var(--ink);font-size:13px;letter-spacing:.04em;font-weight:500}
.bnav-links a.cta{background:var(--blue);color:#fff;padding:9px 18px;border-radius:100px}
.bnav-links a.cta:hover{background:var(--blue-deep)}
@media(max-width:740px){.bnav-links a:not(.cta){display:none}}

.crumbs{font-size:12px;color:var(--slate);font-family:var(--mono);letter-spacing:.02em;padding:18px 0 0}
.crumbs a{color:var(--slate)}.crumbs span{margin:0 8px;opacity:.5}

/* blog index */
.blog-hero{padding:clamp(46px,8vw,86px) 0 clamp(30px,4vw,46px);border-bottom:1px solid var(--hair)}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--blue);margin-bottom:16px}
.blog-hero h1{font-family:var(--display);font-weight:300;font-size:clamp(34px,5.6vw,58px);line-height:1.04;color:var(--ink);letter-spacing:-.02em;max-width:18ch}
.blog-hero p{margin-top:18px;font-size:18px;color:var(--slate);max-width:62ch}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;padding:clamp(34px,5vw,56px) 0 80px}
@media(max-width:880px){.grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.grid{grid-template-columns:1fr}}
.card{display:flex;flex-direction:column;background:var(--bg);border:1px solid var(--hair);border-radius:var(--rd);padding:26px 24px;transition:transform .2s,box-shadow .2s,border-color .2s}
.card:hover{transform:translateY(-3px);box-shadow:0 22px 50px -30px rgba(16,40,60,.34);border-color:#cfd9df}
.card .cat{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);margin-bottom:13px}
.card h2{font-family:var(--display);font-weight:400;font-size:21px;line-height:1.18;color:var(--ink);margin-bottom:10px}
.card p{font-size:14px;color:var(--slate);flex:1}
.card .more{margin-top:16px;font-size:13px;font-weight:600;color:var(--blue);display:inline-flex;align-items:center;gap:7px}
.card .more::after{content:"→";transition:transform .2s}.card:hover .more::after{transform:translateX(3px)}

/* article */
.article{padding:0 0 70px}
.article-head{padding:clamp(34px,5vw,60px) 0 clamp(22px,3vw,34px);border-bottom:1px solid var(--hair)}
.article-head .cat{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--blue);margin-bottom:18px}
.article-head h1{font-family:var(--display);font-weight:300;font-size:clamp(30px,5vw,52px);line-height:1.06;color:var(--ink);letter-spacing:-.02em;max-width:22ch}
.article-meta{margin-top:18px;font-size:13px;color:var(--slate);font-family:var(--mono);display:flex;gap:16px;flex-wrap:wrap}
.prose{max-width:720px;margin:0 auto;padding:clamp(30px,4vw,48px) 0}
.prose>p{font-size:17.5px;color:var(--body);margin:0 0 22px}
.prose .lead{font-size:20px;color:var(--ink);line-height:1.6}
.prose h2{font-family:var(--display);font-weight:400;font-size:clamp(24px,3vw,32px);color:var(--ink);line-height:1.15;margin:42px 0 16px;letter-spacing:-.01em}
.prose h3{font-family:var(--ui);font-weight:700;font-size:19px;color:var(--ink);margin:30px 0 10px}
.prose ul,.prose ol{margin:0 0 22px;padding-left:22px}
.prose li{font-size:17px;margin:0 0 9px}
.prose strong{color:var(--ink)}
.prose blockquote{margin:26px 0;padding:18px 24px;background:var(--panel);border-left:3px solid var(--blue);border-radius:0 10px 10px 0;font-size:17px;color:var(--ink)}
.callout{margin:30px 0;padding:24px 26px;background:linear-gradient(135deg,#EAF3FA,#F5F9FC);border:1px solid #D4E5F1;border-radius:14px}
.callout .k{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);margin-bottom:8px}
.callout p{margin:0 0 14px;font-size:16px;color:var(--ink)}
.callout a.btn{display:inline-block;background:var(--blue);color:#fff;font-weight:600;font-size:14px;padding:11px 22px;border-radius:100px}
.callout a.btn:hover{background:var(--blue-deep)}
.faq{max-width:720px;margin:0 auto;padding:10px 0 0}
.faq h2{font-family:var(--display);font-weight:400;font-size:28px;color:var(--ink);margin:34px 0 18px}
.faq details{border:1px solid var(--hair);border-radius:12px;padding:4px 20px;margin-bottom:12px;background:var(--bg)}
.faq summary{font-weight:600;color:var(--ink);font-size:16px;padding:16px 0;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq summary::after{content:"+";color:var(--blue);font-size:20px}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 0 18px;font-size:15.5px;color:var(--body)}
.disclaimer{max-width:720px;margin:40px auto 0;padding:18px 22px;background:var(--sand);border-radius:12px;font-size:12.5px;color:var(--slate);line-height:1.55}
.related{border-top:1px solid var(--hair);padding:44px 0 0;margin-top:46px}
.related h2{font-family:var(--display);font-weight:400;font-size:24px;color:var(--ink);margin-bottom:22px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
@media(max-width:740px){.related-grid{grid-template-columns:1fr}}
.related-grid a{display:block;border:1px solid var(--hair);border-radius:12px;padding:20px;color:var(--ink);font-family:var(--display);font-size:18px;line-height:1.2;transition:border-color .2s,transform .2s}
.related-grid a:hover{border-color:var(--blue);transform:translateY(-2px)}

/* footer */
.bfoot{background:#0E1417;color:rgba(255,255,255,.6);padding:54px 0 30px;margin-top:30px}
.bfoot .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
@media(max-width:740px){.bfoot .cols{grid-template-columns:1fr}}
.bfoot h4{color:#fff;font-size:11px;letter-spacing:.13em;text-transform:uppercase;margin-bottom:16px;font-weight:700}
.bfoot a{display:block;color:rgba(255,255,255,.6);font-size:13px;padding:5px 0}.bfoot a:hover{color:#fff}
.bfoot .bbrand{color:#fff;margin-bottom:14px}
.bfoot .tag{font-size:13px;max-width:34ch;color:rgba(255,255,255,.5)}
.bfoot .legal{border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding-top:20px;font-size:11px;color:rgba(255,255,255,.4)}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:3px}
@media(pointer:coarse){
  .bnav-links a,.callout a.btn,.related-grid a,.faq summary,.card{min-height:48px;touch-action:manipulation}
  .card:active,.related-grid a:active{transform:scale(.992);border-color:var(--blue)}
  .card:hover,.related-grid a:hover{transform:none}
}