.bc-grid{display:grid;gap:30px;grid-template-columns:1fr}.bc-card{width:100%;max-width:var(--bc-max-width,750px);margin:0 auto;background:#fff0}.bc-content{padding:0}.bc-title{margin:0 0 14px;text-align:center;font-size:clamp(20px,3vw,28px);line-height:1.25}.bc-description{margin:0 auto 16px;color:#4b5563;text-align:center}.bc-actions{display:flex;align-items:stretch;justify-content:center;gap:12px;width:100%;margin:0 0 16px}.bc-button{display:inline-flex;flex:1 1 0%;min-height:50px;align-items:center;justify-content:center;gap:9px;padding:12px 18px;border:0;border-radius:9px;color:#fff!important;font:inherit;font-weight:700;line-height:1.2;text-align:center;text-decoration:none!important;cursor:pointer;transition:filter .18s ease,transform .18s ease}.bc-open{background:#249ca5}.bc-download{background:#f08a17}.bc-button:hover,.bc-button:focus{color:#fff!important;filter:brightness(.93);transform:translateY(-1px)}.bc-icon{flex:0 0 auto;font-size:19px;line-height:1}.bc-preview{display:flex;width:100%;align-items:flex-start;justify-content:center;overflow:hidden;border-radius:10px;background:#fff0}.bc-cover{display:block;width:100%;height:auto!important;max-width:100%;max-height:none!important;object-fit:contain;border-radius:10px;box-shadow:0 5px 20px rgb(0 0 0 / .10)}.bc-placeholder{display:grid;width:100%;min-height:420px;place-items:center;border-radius:10px;background:#eef1f4;color:#6b7280;font-size:40px;font-weight:800}.bc-viewer{width:100%;height:min(var(--bc-height),82vh);min-height:500px;overflow:hidden;border:1px solid rgb(0 0 0 / .12);border-radius:10px;background:#f3f4f6;box-shadow:0 5px 20px rgb(0 0 0 / .08)}.bc-viewer iframe{width:100%;height:100%;border:0}@media(min-width:640px){.bc-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.bc-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.bc-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.bc-cols-2 .bc-card,.bc-cols-3 .bc-card,.bc-cols-4 .bc-card{max-width:100%}}@media(max-width:767px){.bc-card{max-width:100%}.bc-actions{gap:8px}.bc-button{min-height:48px;padding:11px 10px;font-size:14px}.bc-viewer{height:72vh;min-height:480px}}@media(max-width:480px){.bc-actions{flex-direction:column}.bc-button{width:100%}}@media(prefers-reduced-motion:reduce){.bc-button{transition:none}}