body {
    font-family: -apple-system, BlinkMacSystemFont, "Inter", sans-serif;
    margin: 0;
    background: #fafafa;
}

.header {
    background: white;
    border-bottom: 1px solid #ddd;
    padding: 14px 0;
}

.header-inner {
    width: 90%;
    max-width: 900px;
    margin: auto;
    display: flex;
    align-items: center;
}

.logo {
    font-size: 18px;
    font-weight: 600;
}

.content {
    width: 90%;
    max-width: 900px;
    margin: 40px auto;
}

.title {
    text-align: center;
    font-size: 32px;
    margin-bottom: 6px;
    font-weight: 700;
}

.subtitle {
    text-align: center;
    margin-bottom: 32px;
    color: #666;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.card {
    display: block;
    background: white;
    padding: 24px;
    border-radius: 16px;
    border: 1px solid #ddd;
    text-decoration: none;
    color: black;
    transition: 0.2s ease;
}

.card:hover {
    border-color: #2ecc71;
    box-shadow: 0 4px 18px rgba(0,0,0,0.08);
}

.card.disabled {
    opacity: 0.4;
    pointer-events: none;
}

.product-box {
    background: white;
    border: 1px solid #ddd;
    border-radius: 18px;
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 25px;
    margin-bottom: 40px;
}

.price {
    font-size: 26px;
    font-weight: 700;
    color: #1a1a1a;
}

.details h2 {
    margin: 0;
    font-size: 22px;
}

.details p {
    margin: 2px 0 0 0;
    color: #666;
}

.buy-button {
    background: #2ecc71;
    color: white;
    padding: 10px 18px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
}

.buy-button.large {
    padding: 14px 26px;
    font-size: 18px;
}

.info-box {
    background: white;
    border: 1px solid #ddd;
    border-radius: 14px;
    padding: 20px;
    margin-bottom: 30px;
}

.footer {
    text-align: center;
    font-size: 13px;
    padding: 20px;
    color: #777;
}