body { margin: 0; font-family: 'Noto Sans TC', Arial, sans-serif; background: #fafafa; }
.header { background: #f44; color: #fff; padding: 12px 16px 8px 16px; display: flex; align-items: center; justify-content: space-between; }
.search-bar { flex: 1; display: flex; position: relative; }
.search-bar input { flex: 1; padding: 8px; border-radius: 6px 0 0 6px; border: none; font-size: 16px; }
.search-bar button { padding: 8px 12px; border: none; background: #fff; color: #f44; border-radius: 0 6px 6px 0; font-size: 18px; cursor: pointer; }
.header-icons { display: flex; gap: 12px; margin-left: 10px; }
.header-icons a { color: #fff; font-size: 22px; text-decoration: none; }
.category-bar { display: flex; overflow-x: auto; background: #fff; padding: 8px 0; border-bottom: 1px solid #eee; }
.category-bar button { background: none; border: none; color: #f44; font-size: 16px; margin: 0 10px; padding: 6px 12px; border-radius: 16px; cursor: pointer; }
.category-bar button.active, .category-bar button:hover { background: #ffeaea; }
.product-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; padding: 16px; }
.product-card { background: #fff; border-radius: 10px; box-shadow: 0 2px 8px #0001; overflow: hidden; display: flex; flex-direction: column; }
.product-card img { width: 100%; aspect-ratio: 1/1; object-fit: cover; }
.product-info { padding: 8px; }
.product-info h3 { font-size: 16px; margin: 0 0 4px 0; }
.product-info p { color: #f44; font-weight: bold; margin: 0; }
.footer-nav {
    position: fixed; left: 0; right: 0; bottom: 0; background: #fff; border-top: 1px solid #eee;
    display: flex; justify-content: space-around; padding: 0 0 2px 0; z-index: 100;
    height: 62px;
}
.footer-item {
    flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
    color: #888; text-decoration: none; font-size: 13px; padding: 6px 0 0 0;
    transition: color 0.2s;
}
.footer-item.active, .footer-item:active, .footer-item:hover {
    color: #f44; font-weight: bold;
}
.footer-icon {
    font-size: 26px; line-height: 1; margin-bottom: 2px;
}
.footer-text {
    font-size: 12px; line-height: 1;
}
.cart-badge {
    position: absolute;
    top: -8px;
    right: -14px;
    min-width: 22px;
    height: 22px;
    line-height: 22px;
    background: #f44;
    color: #fff;
    font-size: 17px;
    font-weight: bold;
    border-radius: 14px;
    padding: 0 7px;
    text-align: center;
    display: none;
    z-index: 2;
    box-shadow: 0 1px 4px #0002;
}
@media (min-width: 600px) { .product-grid { grid-template-columns: repeat(4, 1fr); } }