/* Blog layer: light, reuses the main site styles.css; diagrams stay dark cards. */
:root{--turq:#2DD4BF}
.article{max-width:768px;margin:0 auto;padding:54px 24px 26px}
.article .eyebrow{margin-bottom:14px}
.article h1{font-size:clamp(27px,4vw,40px);line-height:1.16;margin:0 0 22px}
.article h2{font-size:clamp(20px,2.6vw,26px);line-height:1.25;margin:38px 0 12px}
.article p{font-size:17.5px;color:var(--text);margin:0 0 18px}
.answer{background:var(--bg-alt);border-left:4px solid var(--turq);border-radius:0 12px 12px 0;padding:18px 22px;font-size:18.5px;line-height:1.6;color:var(--ink);margin:0 0 28px}
.answer strong{color:var(--ink);font-weight:700}
.fig{margin:30px 0;border-radius:16px;overflow:hidden;box-shadow:0 18px 44px rgba(22,48,57,.16)}
.fig svg{display:block;width:100%;height:auto}
.bcta{margin:46px 0 8px;background:var(--ink);border-radius:18px;padding:32px 28px;text-align:center}
.bcta p{font-size:18px;color:rgba(255,255,255,.88);margin:0 0 18px}
.bcta p strong{color:#fff}
.bcta .btn{font-size:16px;padding:15px 30px}
.cluster{margin:46px 0 0;border-top:1px solid var(--border);padding-top:24px}
.cluster h2{margin:0 0 8px;font-size:13px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);font-weight:700}
.cluster a{display:block;color:var(--ink);font-weight:600;font-size:17px;padding:12px 0;border-bottom:1px solid var(--border)}
.cluster a:hover{color:var(--accent)}
.cluster a span{display:block;color:var(--muted);font-size:13.5px;font-weight:400;margin-top:3px}
.bcards{display:grid;grid-template-columns:1fr 1fr;gap:20px}
a.pcard{display:block;background:#fff;border:1px solid var(--border);border-radius:16px;padding:24px;transition:border-color .2s,box-shadow .2s,transform .12s}
a.pcard:hover{border-color:var(--accent);box-shadow:0 12px 30px rgba(22,48,57,.08);transform:translateY(-2px)}
a.pcard .num{color:var(--accent);font-weight:700;font-size:12.5px;letter-spacing:1px}
a.pcard h3{color:var(--ink);font-size:18.5px;line-height:1.3;margin:8px 0 8px;font-weight:700}
a.pcard p{color:var(--text);font-size:14.5px;margin:0}
@media (max-width:680px){.bcards{grid-template-columns:1fr}}