:root{--fondo:#f8fafc;--tarjeta:#fff;--texto:#0f172a;--suave:#64748b;--borde:#e2e8f0;--acento:#e25c50;--fuente-marca:"JetBrains Mono","Fira Code",ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace}
@media (prefers-color-scheme:dark){:root{--fondo:#0b1320;--tarjeta:#121c2e;--texto:#f8fafc;--suave:#9fb0c8;--borde:#243350;--acento:#e25c50}}
*{box-sizing:border-box}
body{margin:0;background:var(--fondo);color:var(--texto);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-text-size-adjust:100%}
.rg-cab{position:sticky;top:0;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px;background:var(--tarjeta);color:var(--texto);border-bottom:1px solid var(--borde)}
.rg-cab-centro{flex:1;min-width:0}
.rg-cab b{font-size:16px;color:var(--texto)}
.rg-volver{color:var(--acento);text-decoration:none;font-weight:700;padding:8px 10px 8px 0;min-height:44px;display:inline-flex;align-items:center}
.rg-marca{display:inline-flex;align-items:center;gap:9px;font-family:var(--fuente-marca);font-weight:700;font-size:18px;letter-spacing:-0.03em;white-space:nowrap}
.rg-marca .brand-icon{display:inline-flex;align-items:center;justify-content:center;width:40px;height:32px;padding:0 4px;border-radius:9px;background:var(--acento);color:#fff}
.rg-marca .brand-icon svg{width:100%;height:100%;display:block}
.rg-marca .marca-ek{color:var(--texto);font-family:var(--fuente-marca);font-weight:700}
.rg-marca .marca-ek i{font-style:normal;color:var(--acento);font-weight:600}
.rg-cont{max-width:720px;margin:0 auto;padding:16px 16px 40px}
.rg-intro{color:var(--suave);margin:4px 0 16px}
.rg-tema{background:var(--tarjeta);border:1px solid var(--borde);border-radius:14px;margin-bottom:10px;overflow:hidden}
.rg-tema summary{cursor:pointer;list-style:none;padding:16px;font-weight:700;display:flex;justify-content:space-between;align-items:center;min-height:52px}
.rg-tema summary::-webkit-details-marker{display:none}
.rg-tema summary::after{content:"▾";opacity:.6;transition:transform .2s}
.rg-tema[open] summary::after{transform:rotate(180deg)}
.rg-tema p,.rg-tema ol,.rg-tema ul{margin:0;padding:0 16px 16px 16px}
.rg-tema ol,.rg-tema ul{padding-left:36px}
.rg-tema li{margin-bottom:6px}
.rg-pie{text-align:center;color:var(--suave);font-size:13px;margin-top:20px}