:root{
  --rojo:#b51f34;
  --rojo-osc:#8d1829;
  --texto:#222;
  --gris:#f2f2f2;
  --gris2:#dedede;
  --blanco:#fff;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:#ececec;color:var(--texto);font-family:Arial,Helvetica,sans-serif}
body{min-height:100vh}
button,a{font:inherit}
button{cursor:pointer}
.topbar{height:64px;background:#fff;border-bottom:1px solid #ddd;display:flex;align-items:center;justify-content:space-between;padding:0 18px;position:sticky;top:0;z-index:50}
.brand{display:flex;align-items:baseline;gap:14px;white-space:nowrap}
.brand a{font-weight:800;text-decoration:none;color:#111;font-size:20px}
.brand span{color:#777;font-size:13px}
.toolbar{display:flex;gap:8px;align-items:center}
.tool-btn{display:inline-flex;align-items:center;gap:6px;padding:9px 11px;border:1px solid #ddd;border-radius:8px;background:#fff;color:#222;text-decoration:none}
.tool-btn:hover{border-color:#bbb;background:#fafafa}
.layout{display:flex;min-height:calc(100vh - 64px)}
.sidebar{width:270px;background:#fff;border-right:1px solid #ddd;padding:14px 14px 20px;position:sticky;top:64px;height:calc(100vh - 64px);overflow:auto;z-index:40}
.sidebar-head{display:flex;justify-content:space-between;align-items:center;padding:6px 4px 12px;border-bottom:1px solid #eee}
.sidebar-head button{border:0;background:none;font-size:24px;line-height:1;color:#666}
.secciones{padding-top:10px}
.section-link{display:block;width:100%;text-align:left;padding:10px 10px;border:0;border-radius:8px;background:transparent;color:#222;text-decoration:none;margin:2px 0}
.section-link:hover{background:#f5f5f5}
.section-link.active{background:#f8e7ea;color:var(--rojo);font-weight:700}
.section-page{float:right;color:#888;font-size:12px}
.catalogo{width:min(1200px,100%);margin:0 auto;padding:22px 22px 36px}
.visor-wrap{position:relative;display:flex;justify-content:center;align-items:center;min-height:calc(100vh - 160px)}
.visor{position:relative;display:flex;justify-content:center;align-items:center;outline:none}
#paginaPrincipal{display:block;max-width:min(94vw,1100px);max-height:calc(100vh - 190px);width:auto;height:auto;background:#fff;box-shadow:0 10px 34px rgba(0,0,0,.18);user-select:none}
.loading{position:absolute;inset:0;display:none;align-items:center;justify-content:center;background:rgba(255,255,255,.72);font-size:14px;color:#666}
.nav-arrow{position:absolute;top:50%;transform:translateY(-50%);border:0;border-radius:50%;width:48px;height:48px;background:rgba(0,0,0,.72);color:#fff;font-size:38px;line-height:40px;z-index:5}
.nav-arrow:hover{background:rgba(0,0,0,.88)}
.nav-arrow.left{left:10px}.nav-arrow.right{right:10px}
.contact-strip{display:flex;align-items:center;justify-content:space-between;gap:20px;background:#fff;border:1px solid #ddd;border-radius:10px;padding:15px 18px;margin-top:5px}
.contact-strip div:first-child{display:flex;flex-direction:column;gap:4px}.contact-strip span{color:#666;font-size:13px}
.contact-actions{display:flex;gap:8px;flex-wrap:wrap}.contact-actions a{padding:9px 12px;border-radius:7px;background:#f1f1f1;text-decoration:none;color:#222;font-size:14px}.contact-actions a.whatsapp{background:var(--rojo);color:#fff}
.hint{text-align:center;font-size:12px;color:#777;margin:11px 0 0}
.backdrop{display:none}
@media(max-width:850px){
  .topbar{height:58px;padding:0 10px}.brand span{display:none}.brand a{font-size:18px}.toolbar .tool-btn span{display:none}
  .sidebar{position:fixed;left:-290px;top:58px;transition:left .22s ease;box-shadow:6px 0 18px rgba(0,0,0,.18)}
  .sidebar.open{left:0}.backdrop.show{display:block;position:fixed;inset:58px 0 0;background:rgba(0,0,0,.32);z-index:30}
  .layout{min-height:calc(100vh - 58px)}
  .catalogo{padding:10px 7px 26px}
  .visor-wrap{min-height:calc(100vh - 150px)}
  #paginaPrincipal{max-width:calc(100vw - 14px);max-height:calc(100vh - 160px)}
  .nav-arrow{width:42px;height:42px;font-size:30px}.nav-arrow.left{left:5px}.nav-arrow.right{right:5px}
  .contact-strip{flex-direction:column;align-items:flex-start}.contact-actions{width:100%}
}
.visor:fullscreen{background:#111;display:flex;width:100vw;height:100vh}.visor:fullscreen #paginaPrincipal{max-width:94vw;max-height:94vh}