/* isolated Professor's Science Academy ad styling */
.psa-ad-v4-slot,
.psa-ad-v4-slot *{box-sizing:border-box}
.psa-ad-v4-slot{display:block;width:100%;padding:34px 0;background:transparent;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif}
.psa-ad-v4-shell{width:min(calc(100% - 36px),980px);margin:0 auto}
.psa-ad-v4-box{position:relative;width:100%;min-height:118px;background:#fff;border:1px solid #dfe4ea;border-radius:12px;box-shadow:0 6px 20px rgba(29,43,56,.08);overflow:hidden}
.psa-ad-v4-label{height:24px;display:flex;align-items:center;justify-content:flex-end;padding:0 12px;background:#f6f7f9;border-bottom:1px solid #e7eaee;color:#7b858f;font-size:9px;font-weight:700;line-height:1;letter-spacing:.08em;text-transform:uppercase}
.psa-ad-v4-link{display:grid;grid-template-columns:250px minmax(0,1fr) auto;align-items:center;gap:24px;min-height:94px;padding:16px 18px;color:#1f2933;text-decoration:none;background:#fff}
.psa-ad-v4-link:hover{background:#fbfdff;color:#1f2933}
.psa-ad-v4-brand{display:flex;align-items:center;gap:12px;min-width:0}
.psa-ad-v4-logo{display:block;flex:0 0 56px;width:56px;height:56px;min-width:56px;min-height:56px;max-width:56px;max-height:56px;border-radius:12px}
.psa-ad-v4-brandtext{min-width:0}
.psa-ad-v4-brandtext strong{display:block;margin:0;color:#1f2933;font-size:14px;font-weight:800;line-height:1.25;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.psa-ad-v4-brandtext small{display:block;margin-top:3px;color:#7b858f;font-size:10px;font-weight:600;line-height:1.2}
.psa-ad-v4-main{min-width:0}
.psa-ad-v4-title{display:block;margin:0;color:#17212b;font-size:20px;font-weight:800;line-height:1.2}
.psa-ad-v4-services{display:flex;align-items:center;flex-wrap:wrap;gap:10px 14px;margin-top:9px}
.psa-ad-v4-service{display:inline-flex;align-items:center;gap:6px;color:#56616c;font-size:11px;font-weight:700;line-height:1.1;white-space:nowrap}
.psa-ad-v4-icon{display:block!important;flex:0 0 18px!important;width:18px!important;height:18px!important;min-width:18px!important;min-height:18px!important;max-width:18px!important;max-height:18px!important;object-fit:contain!important}
.psa-ad-v4-button{display:inline-flex;align-items:center;justify-content:center;min-width:138px;min-height:42px;padding:0 16px;border-radius:6px;background:#1a73e8;color:#fff;font-size:12px;font-weight:800;line-height:1;white-space:nowrap;box-shadow:0 3px 8px rgba(26,115,232,.18)}
.psa-ad-v4-link:hover .psa-ad-v4-button{background:#155fc0}
.psa-ad-v4-slot-footer{padding:36px 0 30px;background:#faf8f4;border-top:1px solid #eee8df}
@media(max-width:920px){
  .psa-ad-v4-link{grid-template-columns:1fr auto;gap:12px 14px;padding:15px}
  .psa-ad-v4-brand{grid-column:1/-1}
  .psa-ad-v4-main{min-width:0}
  .psa-ad-v4-services{gap:8px 12px}
}
@media(max-width:760px){
  .psa-ad-v4-slot{padding:24px 0}
  .psa-ad-v4-shell{width:min(calc(100% - 24px),370px)}
  .psa-ad-v4-box{min-height:0}
  .psa-ad-v4-label{height:21px;font-size:8px}
  .psa-ad-v4-link{display:flex;flex-direction:column;align-items:stretch;gap:12px;padding:13px}
  .psa-ad-v4-brand{gap:9px}
  .psa-ad-v4-logo{width:46px;height:46px;min-width:46px;min-height:46px;max-width:46px;max-height:46px}
  .psa-ad-v4-brandtext strong{font-size:12px}
  .psa-ad-v4-brandtext small{font-size:9px}
  .psa-ad-v4-title{font-size:16px}
  .psa-ad-v4-services{display:grid;grid-template-columns:1fr 1fr;gap:8px 10px}
  .psa-ad-v4-service{font-size:10px}
  .psa-ad-v4-icon{width:17px!important;height:17px!important;min-width:17px!important;min-height:17px!important;max-width:17px!important;max-height:17px!important}
  .psa-ad-v4-button{width:100%;min-height:37px;font-size:11px}
}