/* Cube article page scoped to container cube-hub. Rich editorial explainer with
   a hero answer card, a contents list, comparison cards and a highlight box.
   Dark navy titles carry a blue accent. Distinct from the nylon service template. */
.cube-hub{
  --cube-blue:#0052cc;
  --cube-navy:#0f2747;
  --cube-accent:#00a3c4;
  --cube-ink:#1c2530;
  --cube-muted:#5b6675;
  --cube-line:#e4e9f0;
  --cube-soft:#f4f7fb;
  --cube-card:#ffffff;
  max-width:920px;
  margin:0 auto;
  padding:32px 24px 56px;
  color:var(--cube-ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.72;
  background:#fff;
}
.cube-hub *{box-sizing:border-box;}
.cube-hub h2,.cube-hub .cube-h2{
  color:var(--cube-navy);
  font-size:clamp(21px,2.4vw,26px);
  font-weight:800;
  line-height:1.3;
  margin:40px 0 14px;
  padding-left:14px;
  border-left:4px solid var(--cube-blue);
}
.cube-hub h3{
  color:var(--cube-navy);
  font-size:clamp(18px,2vw,21px);
  font-weight:700;
  margin:26px 0 10px;
}
.cube-hub p{margin:0 0 16px;}
.cube-hub ul{margin:0 0 16px;padding-left:22px;}
.cube-hub li{margin:0 0 8px;}
.cube-hub a{
  color:var(--cube-blue);
  text-decoration:none;
  border-bottom:1px solid rgba(0,82,204,.35);
}
.cube-hub a:hover{color:var(--cube-accent);border-bottom-color:var(--cube-accent);}
.cube-hub strong{color:var(--cube-navy);}

/* eyebrow + answer card */
.cube-eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:800;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--cube-blue);
  background:rgba(0,82,204,.08);
  border-radius:999px;
  padding:6px 14px;
  margin:0 0 14px;
}
.cube-lead{
  font-size:clamp(18px,2.1vw,20px);
  line-height:1.65;
  color:var(--cube-ink);
  background:linear-gradient(180deg,#f7faff,#eef4fc);
  border:1px solid var(--cube-line);
  border-left:5px solid var(--cube-blue);
  border-radius:12px;
  padding:20px 22px;
  margin:0 0 28px;
}

/* figures / hero */
.cube-fig{margin:30px 0;padding:0;}
.cube-fig img{
  width:100%;
  height:auto;
  aspect-ratio:1536/914;
  object-fit:cover;
  display:block;
  border-radius:14px;
  border:1px solid var(--cube-line);
  box-shadow:0 10px 28px rgba(15,39,71,.10);
}
.cube-figcap{
  display:block;
  margin-top:10px;
  font-size:14px;
  color:var(--cube-muted);
  line-height:1.5;
}

/* table of contents */
.cube-toc{
  background:var(--cube-soft);
  border:1px solid var(--cube-line);
  border-radius:14px;
  padding:18px 22px;
  margin:30px 0 8px;
}
.cube-toc-t{
  margin:0 0 10px;
  font-size:13px;
  font-weight:800;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--cube-muted);
}
.cube-toc ul{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:6px 26px;
}
.cube-toc li{margin:0;}
.cube-toc a{
  display:block;
  padding:6px 0;
  font-size:15px;
  color:var(--cube-navy);
  border-bottom:1px solid transparent;
}
.cube-toc a:hover{color:var(--cube-blue);border-bottom-color:var(--cube-line);}
.cube-toc a::before{content:"# ";color:var(--cube-accent);font-weight:800;}

/* reality-check callout */
.cube-callout{
  background:#fff8ec;
  border:1px solid #f0d9a8;
  border-left:5px solid #e0a93b;
  border-radius:12px;
  padding:16px 20px;
  margin:22px 0;
}
.cube-callout::before{
  content:"Reality check";
  display:block;
  font-size:12px;
  font-weight:800;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:#b9791a;
  margin-bottom:6px;
}
.cube-callout p{margin:0;}

/* comparison cards */
.cube-compare{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
  margin:26px 0 34px;
}
.cube-compare-card{
  background:var(--cube-card);
  border:1px solid var(--cube-line);
  border-radius:14px;
  padding:18px 18px 20px;
  box-shadow:0 6px 18px rgba(15,39,71,.07);
}
.cube-hub .cube-compare-card h2{
  margin:0 0 10px;
  padding:0 0 10px;
  border-left:none;
  border-bottom:2px solid var(--cube-line);
  font-size:19px;
}
.cube-compare-card p{margin:0;font-size:15.5px;}

/* soft mid-article CTA */
.cube-cta-soft{
  background:var(--cube-soft);
  border:1px solid var(--cube-line);
  border-radius:12px;
  padding:22px 24px;
  margin:36px 0;
}
.cube-hub .cube-cta-soft h2{
  margin-top:0;
  border-left:none;
  padding-left:0;
}

/* buttons */
.cube-cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px;}
.cube-btn{
  display:inline-block;
  font-family:inherit;
  font-size:16px;
  font-weight:700;
  line-height:1;
  padding:14px 22px;
  border-radius:8px;
  cursor:pointer;
  text-decoration:none;
  border:2px solid transparent;
  transition:background .15s ease,color .15s ease,border-color .15s ease;
}
.cube-btn-primary{background:var(--cube-blue);color:#fff;border-color:var(--cube-blue);}
.cube-btn-primary:hover{background:var(--cube-navy);border-color:var(--cube-navy);color:#fff;}
.cube-btn-ghost{background:#fff;color:var(--cube-blue);border-color:var(--cube-blue);}
.cube-btn-ghost:hover{background:var(--cube-blue);color:#fff;}

/* bottom commercial CTA band */
.cube-cta{
  background:linear-gradient(135deg,var(--cube-navy),#16365f);
  border-radius:14px;
  padding:34px 30px;
  margin:44px 0 8px;
  color:#fff;
}
.cube-wrap{max-width:640px;}
.cube-cta .cube-cta-h{
  color:#fff;
  border-left:4px solid var(--cube-accent);
  margin-top:0;
}
.cube-cta p{color:rgba(255,255,255,.9);}
.cube-cta .cube-cta-actions .cube-btn-ghost{
  background:transparent;color:#fff;border-color:rgba(255,255,255,.6);
}
.cube-cta .cube-cta-actions .cube-btn-ghost:hover{
  background:#fff;color:var(--cube-navy);border-color:#fff;
}

/* FAQ accordion */
.cube-faq{margin:18px 0 8px;border:1px solid var(--cube-line);border-radius:12px;overflow:hidden;}
.cube-faq details{border-bottom:1px solid var(--cube-line);}
.cube-faq details:last-child{border-bottom:none;}
.cube-faq summary{
  cursor:pointer;
  padding:16px 20px;
  font-weight:700;
  color:var(--cube-navy);
  background:var(--cube-soft);
  list-style:none;
}
.cube-faq summary::-webkit-details-marker{display:none;}
.cube-faq summary::before{content:"+";color:var(--cube-blue);font-weight:800;margin-right:10px;}
.cube-faq details[open] summary::before{content:"\2212";}
.cube-faq details p{margin:0;padding:4px 20px 18px;color:var(--cube-ink);}

/* modal */
.cube-modal-overlay{
  display:none;
  position:fixed;
  inset:0;
  z-index:9999;
  background:rgba(15,39,71,.62);
  align-items:flex-start;
  justify-content:center;
  padding:40px 16px;
  overflow:auto;
}
.cube-modal-overlay.is-open{display:block;}
.cube-modal-box{
  position:relative;
  width:min(680px,100%);
  background:#fff;
  border-radius:12px;
  overflow:hidden;
  box-shadow:0 24px 60px rgba(0,0,0,.3);
}
.cube-modal-close{
  position:absolute;
  top:8px;right:10px;
  z-index:2;
  width:34px;height:34px;
  border:none;
  border-radius:50%;
  background:rgba(15,39,71,.85);
  color:#fff;
  font-size:22px;
  line-height:1;
  cursor:pointer;
}
.cube-modal-frame{
  width:100%;
  height:78vh;
  min-height:480px;
  border:0;
  display:block;
}

@media(max-width:900px){
  .cube-toc ul{grid-template-columns:1fr;}
  .cube-compare{grid-template-columns:1fr;}
}
@media(max-width:980px){
  .cube-hub{padding:26px 18px 44px;font-size:16px;}
}
@media(max-width:620px){
  .cube-hub{padding:20px 14px 36px;font-size:15.5px;line-height:1.68;}
  .cube-hub h2,.cube-hub .cube-h2{font-size:20px;margin:32px 0 12px;}
  .cube-cta{padding:26px 20px;}
  .cube-modal-frame{height:82vh;}
}