.portfolio-card.sample:nth-child(1) .portfolio-photo{background-image:var(--card-1);background-size:cover;background-position:center}
.portfolio-card.sample:nth-child(2) .portfolio-photo{background-image:var(--card-2);background-size:cover;background-position:center}
.portfolio-card.sample:nth-child(3) .portfolio-photo{background-image:var(--card-3);background-size:cover;background-position:center}
.portfolio-card.sample:nth-child(4) .portfolio-photo{background-image:var(--card-4);background-size:cover;background-position:center}

@media(max-width:560px){
  .header-inner{grid-template-columns:minmax(0,1fr) auto;gap:12px}
  .brand{min-width:0}
  .quote-btn{width:108px;max-width:100%}
}