.cluster-hero{padding:108px 0 48px;background:linear-gradient(160deg,#FFFBF7 0%,#F0F4FF 50%,#FFF4F2 100%);position:relative;overflow:hidden}
.cluster-hero::before{content:'';position:absolute;top:-20%;right:-5%;width:50%;height:80%;background:radial-gradient(circle,rgba(255,83,73,.06) 0%,transparent 70%);pointer-events:none}
.cluster-hero-inner{max-width:800px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
.cluster-hero-cat{display:inline-block;padding:5px 14px;background:rgba(255,83,73,.1);color:var(--accent);font-size:.7rem;font-weight:800;text-transform:uppercase;letter-spacing:1.5px;border-radius:20px;margin-bottom:18px}
.cluster-hero h1{font-size:clamp(1.8rem,4vw,2.6rem);font-weight:800;line-height:1.2;color:var(--dark);margin-bottom:16px;letter-spacing:-.5px}
.cluster-hero-desc{font-size:1.05rem;color:var(--text-mid);line-height:1.7;max-width:640px}
@media (max-width:680px){.cluster-hero{padding:88px 0 36px}.cluster-hero h1{font-size:1.6rem}.cluster-layout{padding:32px 20px 0}.cluster-toc{padding:18px 20px}.cluster-cta{padding:28px 22px}.cluster-related-grid{grid-template-columns:1fr}.cluster-timeline{padding-left:36px}.cluster-timeline-dot{left:-36px;width:28px;height:28px;font-size:.7rem}.cluster-factor-grid{grid-template-columns:1fr}.hub-cluster-grid{grid-template-columns:1fr}.hub-explain{padding:48px 0}.hub-explain h2{font-size:1.3rem}.cluster-situations-grid{grid-template-columns:1fr}}