.store-hero {
    position: relative;
    text-align: center;
    background-image: linear-gradient(135deg, rgba(11,102,255,0.18), rgba(42,160,255,0.18)), url('/static/hero/store.jpg');
    background-size: cover;
    background-position: center;
    border-radius: 14px;
    color: #fff;
    min-height: 300px;
    display: flex;
    align-items: center;
    overflow: hidden;
    box-shadow: 0 12px 32px rgba(0,0,0,0.12);
    margin-bottom: 2.5rem;
  }
  .store-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0,0,0,0.28) 0%, rgba(0,0,0,0.62) 100%);
    z-index: 1;
  }
  .store-hero .hero-inner {
    position: relative;
    z-index: 2;
    width: 100%;
    padding: 2.5rem 1.5rem;
    max-width: 800px;
    margin: 0 auto;
  }
  .store-hero h1 {
    margin: 0 0 0.75rem 0;
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 12px rgba(0,0,0,0.35);
    line-height: 1.15;
  }
  .store-hero p {
    margin: 0;
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: rgba(255,255,255,0.92);
    max-width: 58ch;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 0 1px 6px rgba(0,0,0,0.28);
    line-height: 1.55;
  }

  /* Gene cards */
  .store-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
  }
  .gene-card {
    border: 1px solid rgba(15,23,42,0.09);
    border-radius: 14px;
    padding: 1.4rem;
    background: linear-gradient(180deg, #fff, #fafbfc);
    box-shadow: 0 4px 12px rgba(0,0,0,0.04);
    transition: all 0.25s ease;
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
  }
  .gene-card:hover {
    box-shadow: 0 10px 28px rgba(11,102,255,0.13);
    transform: translateY(-4px);
    border-color: rgba(11,102,255,0.22);
  }
  .gene-thumb {
    display: flex;
    justify-content: center;
    align-items: center;
    background: #f8fafc;
    border-radius: 10px;
    padding: 0.5rem;
    overflow: hidden;
    max-height: 140px;
  }
  .gene-thumb img {
    max-width: 150px;
    max-height: 130px;
    width: auto;
    height: auto;
    border-radius: 6px;
    transition: transform 0.2s ease;
    object-fit: contain;
  }
  .gene-card:hover .gene-thumb img { transform: scale(1.04); }
  .gene-title {
    font-size: 1.05rem;
    font-weight: 700;
    margin: 0;
  }
  .gene-title a {
    text-decoration: none;
    color: var(--text);
    transition: color 0.2s;
  }
  .gene-title a:hover { color: var(--brand); }
  .gene-excerpt {
    color: #64748b;
    font-size: 0.9rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
  }
  .gene-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-top: auto;
    padding-top: 0.6rem;
    border-top: 1px solid rgba(15,23,42,0.06);
  }
  .gene-cost {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: linear-gradient(135deg, #eef2ff, #e0e7ff);
    color: #3730a3;
    padding: 5px 12px;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 700;
    white-space: nowrap;
  }
  .gene-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--brand, #0b66ff), #2563eb);
    color: #fff;
    padding: 8px 18px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.88rem;
    transition: all 0.2s;
    box-shadow: 0 3px 8px rgba(11,102,255,0.2);
    white-space: nowrap;
  }
  .gene-btn:hover {
    box-shadow: 0 5px 14px rgba(11,102,255,0.35);
    transform: translateY(-1px);
  }
  .empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    color: #64748b;
  }