:root{--bg:#f5f8f7;--surface:#fff;--text:#192128;--muted:#56616c;--line:#dce4e9;--accent:#0f766e;--accent-soft:#e7f7f5}*{box-sizing:border-box}body,html{margin:0;padding:0;background:radial-gradient(circle at top right,#eef7ff 0,var(--bg) 45%,#f7f6ef 100%);color:var(--text);font-family:IBM Plex Sans,Segoe UI,sans-serif;line-height:1.6}a{color:var(--accent)}.cta,.cta:hover,a,a.button,a.button:hover,a.cta,button{text-decoration:none}a:hover{text-decoration:underline}.container{max-width:1100px;margin:0 auto;padding:32px 20px 64px}.hub-container{max-width:1280px}.card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:22px}.stack{display:grid;grid-gap:18px;gap:18px}.muted{color:var(--muted)}.cta{display:inline-block;background:var(--accent);color:#fff;padding:12px 18px;border-radius:12px;font-weight:600}.cta-large{font-size:1.05rem;padding:14px 22px}.cta-ghost{background:transparent;border:1px solid var(--accent);color:var(--accent);text-align:center}.hero{padding:28px}.list{padding-left:20px;margin:0}.list li+li{margin-top:6px}.related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));grid-gap:12px;gap:12px}.cluster-nav{display:grid;grid-gap:16px;gap:16px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}h1,h2,h3{line-height:1.25;margin:0}h1{font-size:clamp(1.6rem,2.3vw,2.15rem)}h2{font-size:clamp(1.2rem,2vw,1.55rem)}p{margin:0}.breadcrumbs{font-size:.92rem;color:var(--muted)}.breadcrumbs span{margin:0 6px}.link-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));grid-gap:12px;gap:12px}.link-card{display:block;padding:12px 14px;border-radius:12px;border:1px solid var(--line);background:var(--accent-soft);color:var(--text);transition:border-color .2s ease,box-shadow .2s ease}.link-card:hover{border-color:rgba(15,118,110,.45);box-shadow:0 8px 20px rgba(15,118,110,.12);text-decoration:none}@media (max-width:640px){.container{padding:20px 14px 40px}.card{padding:16px}}