.chis-hero{background:linear-gradient(135deg,#451a03 0,#78350f 50%,#92400e 100%);color:#fef3c7;position:relative;overflow:hidden}.chis-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 30%,rgba(251,191,36,.15),transparent 55%);pointer-events:none}.chis-hero .prd-hero-inner{position:relative;z-index:1}.chis-hero-grid{display:grid;grid-template-columns:1fr 320px;gap:2rem;align-items:center}.chis-hero-kicker{display:inline-block;font-size:2.75rem;font-weight:900;color:#fbbf24;margin-bottom:.5rem;letter-spacing:-.02em;line-height:1}.chis-hero-map{width:100%}.chis-hero-map svg{width:100%;filter:drop-shadow(0 10px 30px rgba(0,0,0,.4))}.chis-era-header{text-align:center;margin-bottom:2rem}.chis-era-badge{display:inline-block;font-size:.75rem;font-weight:800;letter-spacing:.15em;text-transform:uppercase;padding:.4rem 1rem;border-radius:99px;margin-bottom:.75rem}.chis-era{padding:4rem 0;position:relative}.chis-timeline{max-width:780px;margin:0 auto;position:relative;padding-left:2rem}.chis-timeline::before{content:"";position:absolute;left:11px;top:10px;bottom:10px;width:2px}.chis-event{display:grid;grid-template-columns:48px 1fr;gap:1.25rem;padding:1rem 0;position:relative;align-items:flex-start}.chis-event-dot{position:absolute;left:-2rem;top:22px;width:16px;height:16px;border-radius:50%;border:3px solid #fff;box-shadow:0 0 0 2px currentColor}.chis-event-glyph{width:48px;height:48px;padding:8px;border-radius:12px;display:flex;align-items:center;justify-content:center}.chis-event-glyph svg{width:100%;height:100%}.chis-event-body h3{margin:0 0 .35rem;font-size:1.05rem}.chis-event-body p,.chis-wave p{font-size:.9rem;line-height:1.55;margin:0}.chis-era--origins{background:linear-gradient(180deg,#f0fdf4 0,#fff 70%)}.chis-era--origins .chis-era-badge{background:#d1fae5;color:#065f46}.chis-era--origins .chis-timeline::before{background:linear-gradient(180deg,#10b981,#34d399)}.chis-era--origins .chis-event{color:#065f46}.chis-era--origins .chis-event-glyph{background:#d1fae5;color:#047857}.chis-era--origins .chis-event-body h3{color:#064e3b}.chis-era--arabia .chis-event-body p,.chis-era--europe .chis-event-body p,.chis-era--origins .chis-event-body p{color:#334155}.chis-era--arabia{background:linear-gradient(180deg,#fffbeb 0,#fff 70%)}.chis-era--arabia .chis-era-badge{background:#fef3c7;color:#92400e}.chis-era--arabia .chis-timeline::before{background:linear-gradient(180deg,#f59e0b,#fbbf24)}.chis-era--arabia .chis-event,.chis-era--arabia .chis-event-body h3{color:#78350f}.chis-era--arabia .chis-event-glyph{background:#fef3c7;color:#b45309}.chis-era--europe{background:linear-gradient(180deg,#f5f3ff 0,#fff 70%)}.chis-era--europe .chis-era-badge{background:#ede9fe;color:#5b21b6}.chis-era--europe .chis-timeline::before{background:linear-gradient(180deg,#8b5cf6,#a78bfa)}.chis-era--europe .chis-event{color:#5b21b6}.chis-era--europe .chis-event-glyph{background:#ede9fe;color:#6d28d9}.chis-era--europe .chis-event-body h3{color:#4c1d95}.chis-waves{padding:4rem 0;background:#0f172a;color:#f1f5f9}.chis-waves .prd-section-title{color:#fbbf24}.chis-era-badge--waves{background:rgba(251,191,36,.15);color:#fbbf24}.chis-waves-stack{max-width:800px;margin:1rem auto 0;display:flex;flex-direction:column;gap:0;position:relative}.chis-wave{display:grid;grid-template-columns:80px 1fr;gap:1.5rem;padding:2rem 1.5rem;align-items:center;position:relative;border-radius:16px;margin-bottom:.5rem}.chis-wave::before{content:"";position:absolute;inset:0;border-radius:16px;opacity:.85;z-index:0}.chis-wave>*{position:relative;z-index:1}.chis-wave--1::before{background:linear-gradient(135deg,#991b1b,#7f1d1d)}.chis-wave--2::before{background:linear-gradient(135deg,#b45309,#92400e)}.chis-wave--3::before{background:linear-gradient(135deg,#0e7490,#164e63)}.chis-wave--4::before{background:linear-gradient(135deg,#059669,#065f46)}.chis-wave-number{font-size:4rem;font-weight:900;line-height:1;color:rgba(255,255,255,.3);letter-spacing:-.05em}.chis-wave-period{font-size:.75rem;font-weight:800;letter-spacing:.15em;text-transform:uppercase;color:rgba(255,255,255,.75);margin-bottom:.25rem}.chis-wave h3{margin:0 0 .5rem;font-size:1.15rem;color:#fff}.chis-wave p{color:rgba(255,255,255,.9)}@media (max-width:900px){.chis-hero-grid{grid-template-columns:1fr}.chis-hero-map{max-width:280px}.chis-event{grid-template-columns:40px 1fr;gap:.75rem}.chis-event-glyph{width:40px;height:40px;padding:6px}.chis-wave{grid-template-columns:60px 1fr;padding:1.5rem}.chis-wave-number{font-size:3rem}}