.btn-primary {
    width: 100%;
    min-height: 44px;
    margin-top: 2px;
    padding: 10px 16px;
    color: var(--accent-ink);
    background: var(--stamp);
    border: 0;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background .15s ease, transform .1s ease;
  }
  
  .btn-primary:hover { background: #151515; }
  .btn-primary:active { transform: scale(.985); }