.usda-card {
    max-width: 520px;
    margin: 30px auto;
    padding: 24px;
    border-radius: 18px;
    background: linear-gradient(135deg, #e8f5ff, #ffffff);
    box-shadow: 0 12px 30px rgba(0,0,0,0.1);
    font-family: system-ui, sans-serif;
}

.usda-card h1 {
    text-align: center;
    margin-bottom: 20px;
}

.usda-card label {
    font-weight: 600;
    display: block;
    margin-top: 12px;
}

.usda-card input {
    width: 100%;
    padding: 10px;
    margin-top: 4px;
    border-radius: 10px;
    border: 1px solid #ccc;
}

.usda-card button {
    width: 100%;
    margin-top: 18px;
    padding: 14px;
    border: none;
    border-radius: 14px;
    background: #0066ff;
    color: #fff;
    font-size: 16px;
    cursor: pointer;
}

.usda-card button:hover {
    background: #004ecc;
}

#result {
    margin-top: 20px;
}

.note {
    display: block;
    margin-top: 12px;
    font-size: 13px;
    color: #666;
    text-align: center;
}

@media (max-width: 600px) {
    .usda-card {
        margin: 15px;
        padding: 18px;
    }
}