/* 底部区域样式 */
footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 20px 0;
}

.footer-content {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    font-size: 1.1em;
    gap: 20px;
    padding: 0 10px;
}

.links ul {
    list-style-type: none;
    padding: 0;
}

.links a {
    color: white;
    text-decoration: none;
}

.qr-code img {
    height: 100px;
    width: 100px;
    max-width: 100%;
}

.copyright {
    text-align: center;
    margin-top: auto;
    padding-top: 20px;
    padding-left: 10px;
    padding-right: 10px;
    border-top: 1px solid #555;
}

footer a {
    color: inherit;
    text-decoration: none;
}

/* ===== 平板端适配 ===== */
@media (max-width: 768px) {
    .footer-content {
        font-size: 1em;
        gap: 15px;
    }

    .qr-code img {
        height: 80px;
        width: 80px;
    }

    .copyright {
        font-size: 0.85em;
    }
}

/* ===== 手机端适配 ===== */
@media (max-width: 480px) {
    .footer-content {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }

    .footer-content section {
        width: 100%;
        max-width: 250px;
    }

    .qr-code img {
        height: 70px;
        width: 70px;
    }
}