/* ===== Página de marca: banner con logo eléctrico ===== */
  .marca-banner{position:relative;overflow:hidden;margin-top:62px;height:clamp(380px,32vw,520px);display:flex;align-items:center;
    background:
      radial-gradient(circle at 70% 50%,rgba(173,109,255,.22),transparent 42%),
      radial-gradient(circle at 88% 85%,rgba(0,217,255,.12),transparent 36%),
      linear-gradient(180deg,#ffffff 0%,#ffffff 100%);
    border-bottom:1px solid rgba(11,18,32,.06);}
  .marca-banner::before{content:'';position:absolute;inset:0;pointer-events:none;
    background-image:linear-gradient(rgba(173,109,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(173,109,255,.07) 1px,transparent 1px);
    background-size:44px 44px;
    -webkit-mask-image:radial-gradient(ellipse 50% 70% at 70% 50%,#000 0%,transparent 75%);
            mask-image:radial-gradient(ellipse 50% 70% at 70% 50%,#000 0%,transparent 75%);}
  .mb-text{position:relative;z-index:2;width:100%;}
  .mb-text > *{max-width:440px;}
  .mb-eyebrow{font-size:.78rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:#ad6dff;margin-bottom:8px;}
  .marca-banner h1{font-size:clamp(2.4rem,5vw,3.6rem);letter-spacing:-.02em;margin-bottom:10px;text-shadow:0 0 30px rgba(173,109,255,.35);}
  .mb-sub{color:#475467;margin-bottom:18px;}
  .mb-back{font-size:.86rem;color:#0077a8;font-weight:600;}
  .mb-back:hover{text-decoration:underline;}
  .mb-stage{position:absolute;z-index:1;top:0;right:0;bottom:0;width:58%;}
  .mb-stage canvas{position:absolute;inset:0;width:100%;height:100%;}

  @media(max-width:760px){
    .marca-banner{height:auto;flex-direction:column;align-items:stretch;padding-top:30px;}
    .mb-text > *{max-width:none;}
    .mb-stage{position:relative;width:100%;height:220px;}
  }
  @media(max-width:560px){.filters input[type=search]{flex:1 1 100%;max-width:none;} .filters select{flex:1 1 calc(50% - 5px);min-width:0;}}
  .marca-vacia{padding:40px 0;text-align:center;color:var(--gray);}
  .marca-vacia a{color:#0077a8;font-weight:600;}