:root{
  --bg:#ffffff;
  --ink:#1b2440;
  --muted:#55607d;
  --lav:#eef0fb;
  --lav-2:#e3e7fa;
  --blue:#5b6ee1;
  --blue-deep:#3f51c7;
  --cta:#1e7d54;
  --cta-deep:#176645;
  --line:#e5e8f5;
  --star:#b45309;
  --font:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:17px;line-height:1.75;-webkit-font-smoothing:antialiased;}
h1,h2,h3,h4{line-height:1.28;margin:0 0 .5em;font-weight:800;letter-spacing:-.01em;}
p{margin:0 0 1.1em;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--blue-deep);}
.section{width:100%;padding:52px 20px;}
.inner{max-width:1100px;margin:0 auto;}
.narrow{max-width:760px;margin:0 auto;}

.cta{display:inline-block;background:var(--cta);color:#fff;font-weight:700;font-size:1.02rem;padding:15px 36px;border-radius:12px;text-decoration:none;box-shadow:0 8px 22px rgba(30,125,84,.28);transition:transform .15s,box-shadow .15s,background .15s;}
.cta:hover{background:var(--cta-deep);transform:translateY(-2px);color:#fff;}

/* top nav */
.topbar{background:#fff;border-bottom:1px solid var(--line);padding:12px 20px;position:sticky;top:0;z-index:50;}
.topbar .inner{display:flex;align-items:center;justify-content:space-between;gap:16px;}
.brand{font-weight:800;font-size:1rem;color:var(--ink);text-decoration:none;letter-spacing:-.01em;}
.brand span{color:var(--blue-deep);}
.nav-next{display:inline-block;background:var(--cta);color:#fff;font-weight:700;font-size:.86rem;padding:9px 18px;border-radius:999px;text-decoration:none;white-space:nowrap;}
.nav-next:hover{background:var(--cta-deep);color:#fff;}

.crumb{font-size:.85rem;color:var(--muted);margin:0 0 14px;}
.crumb a{color:var(--blue-deep);text-decoration:none;}
.crumb a:hover{text-decoration:underline;}

/* article header */
.art-head{background:linear-gradient(160deg,#eef0fb 0%,#e6ecfb 45%,#e8f4ee 100%);padding:40px 20px 46px;}
.badge{display:inline-block;background:#fff;color:var(--blue-deep);font-weight:700;font-size:.76rem;letter-spacing:.03em;text-transform:uppercase;padding:6px 13px;border-radius:999px;box-shadow:0 3px 10px rgba(63,81,199,.12);margin-bottom:14px;}
.art-head h1{font-size:2.2rem;margin-bottom:.35em;}
.art-head .lead{font-size:1.12rem;color:var(--muted);margin-bottom:0;}
.meta{font-size:.88rem;color:var(--muted);margin-top:16px;}

/* article body */
.article{max-width:760px;margin:0 auto;padding:48px 20px 20px;}
.article h2{font-size:1.6rem;margin:44px 0 .5em;}
.article h3{font-size:1.18rem;margin:30px 0 .4em;}
.article ul,.article ol{margin:0 0 1.2em;padding-left:22px;}
.article li{margin-bottom:9px;}
.article img{border-radius:16px;box-shadow:0 12px 30px rgba(40,52,110,.13);margin:28px 0;}
.figcap{font-size:.85rem;color:var(--muted);text-align:center;margin-top:-16px;margin-bottom:28px;}

.block{background:var(--lav);border-radius:12px;padding:16px 20px;margin:0 0 1.2em;font-weight:500;}
.keytake{background:#fff;border:1px solid var(--line);border-left:4px solid var(--blue);border-radius:0 14px 14px 0;padding:22px 26px;margin:32px 0;box-shadow:0 6px 18px rgba(40,52,110,.05);}
.keytake h3{margin-top:0;font-size:1.05rem;}
.keytake ul{margin-bottom:0;}
.warn{background:#fff8e8;border:1px solid #f3dfae;border-radius:14px;padding:18px 22px;margin:28px 0;font-size:.96rem;}
.warn b{color:#8a5f0e;}

/* inline product callout */
.callout{background:linear-gradient(135deg,#eef0fb,#e8f4ee);border:1px solid var(--line);border-radius:18px;padding:26px 28px;margin:36px 0;text-align:center;}
.callout h3{font-size:1.15rem;margin-bottom:.4em;}
.callout p{color:var(--muted);font-size:.97rem;max-width:520px;margin:0 auto 18px;}

/* blog index cards */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:36px;}
.post{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:0 8px 22px rgba(40,52,110,.06);display:flex;flex-direction:column;transition:transform .15s,box-shadow .15s;}
.post:hover{transform:translateY(-3px);box-shadow:0 14px 32px rgba(40,52,110,.12);}
.post .body{padding:24px 26px 26px;display:flex;flex-direction:column;flex-grow:1;}
.post h3{font-size:1.12rem;margin-bottom:.4em;}
.post h3 a{color:var(--ink);text-decoration:none;}
.post h3 a:hover{color:var(--blue-deep);}
.post p{color:var(--muted);font-size:.94rem;flex-grow:1;}
.post .more{font-weight:700;font-size:.9rem;color:var(--blue-deep);text-decoration:none;margin-top:8px;}
.post .more:hover{text-decoration:underline;}
.tagline{display:inline-block;background:var(--lav);color:var(--blue-deep);font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;padding:5px 11px;border-radius:999px;margin-bottom:12px;align-self:flex-start;}

h2.h{font-size:1.9rem;margin-bottom:.4em;}
h2.h.center,.center{text-align:center;}
.sub{color:var(--muted);font-size:1.05rem;max-width:640px;margin:0 auto 8px;}
.lav-band{background:var(--lav);}

/* author */
.author{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px 30px;max-width:760px;margin:40px auto 0;box-shadow:0 8px 22px rgba(40,52,110,.06);}
.author-head{display:flex;align-items:center;gap:16px;margin-bottom:12px;}
.author-head .av{width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,#5b6ee1,#1e7d54);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.5rem;flex-shrink:0;}
.author-head h3{margin:0;font-size:1.1rem;}
.author-head span{color:var(--muted);font-size:.86rem;}
.author p{font-size:.95rem;color:var(--muted);}
.disclosure{background:var(--lav);border-radius:12px;padding:15px 19px;font-size:.88rem;color:var(--muted);margin-top:16px;}

footer{background:var(--ink);color:#aab2cf;padding:38px 20px;text-align:center;font-size:.88rem;margin-top:50px;}
footer .flinks{margin-bottom:14px;}
footer a{color:#cfd6ef;text-decoration:none;margin:0 10px;line-height:2;}
footer a:hover{color:#fff;text-decoration:underline;}

@media(max-width:900px){
  .post-grid{grid-template-columns:1fr 1fr;}
}
@media(max-width:640px){
  body{font-size:16px;}
  .section{padding:42px 18px;}
  .art-head h1{font-size:1.72rem;}
  .article{padding:36px 18px 16px;}
  .article h2{font-size:1.36rem;}
  h2.h{font-size:1.5rem;}
  .post-grid{grid-template-columns:1fr;}
  .brand{font-size:.9rem;}
}