/* 页脚样式 */
    .site-footer {
        background: linear-gradient(to right, #1a202c, #2d3748, #4a5568);
        color: #fff;
        padding: 40px 0 0;
        margin-top: 60px;
        position: relative;
    }

    .footer-container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    .footer-main {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 30px;
        padding-bottom: 40px;
    }

    .footer-brand {
        grid-column: 1 / -1;
    }

    @media (min-width: 768px) {
        .footer-brand {
            grid-column: auto;
        }
    }

    .footer-logo {
        display: flex;
        align-items: center;
        margin-bottom: 15px;
    }

    .footer-logo img {
        width: 40px;
        height: 40px;
        margin-right: 10px;
    }

    .footer-logo span {
        font-weight: bold;
        font-size: 1.2rem;
    }

    .footer-social {
        margin-top: 20px;
        display: flex;
        gap: 15px;
    }

    .footer-social a {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 50%;
        color: #fff;
        transition: all 0.3s ease;
    }

    .footer-social a:hover {
        background: #4299e1;
        transform: translateY(-3px);
    }

    .footer-links h3, 
    .footer-contact h3, 
    .footer-qrcode h3 {
        font-size: 1.2rem;
        margin-bottom: 20px;
        position: relative;
        padding-bottom: 10px;
    }

    .footer-links h3:after, 
    .footer-contact h3:after, 
    .footer-qrcode h3:after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 40px;
        height: 2px;
        background: #4299e1;
    }

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

    .footer-links li {
        margin-bottom: 10px;
    }

    .footer-links a {
        color: #cbd5e0;
        text-decoration: none;
        transition: color 0.3s ease;
    }

    .footer-links a:hover {
        color: #4299e1;
        padding-left: 5px;
    }

    .contact-item {
        display: flex;
        align-items: center;
        margin-bottom: 15px;
    }

    .contact-item i {
        margin-right: 10px;
        color: #4299e1;
        width: 20px;
    }
    .youqin {
       color: #cbd5e0;
        text-decoration: none;
        transition: color 0.3s ease; 
    }
    .footer-qrcode img {
        max-width: 120px;
        border: 1px solid #718096;
        border-radius: 5px;
    }

    .footer-qrcode p {
        font-size: 0.9rem;
        margin-top: 10px;
        color: #cbd5e0;
    }

    .footer-bottom {
        border-top: 1px solid #4a5568;
        padding: 20px 0;
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    @media (min-width: 768px) {
        .footer-bottom {
            flex-direction: row;
            justify-content: space-between;
        }
    }

    .footer-copyright p {
        margin: 0;
        color: #cbd5e0;
    }

    .footer-copyright a {
        color: #cbd5e0;
        text-decoration: none;
        margin: 0 5px;
    }

    .footer-copyright a:hover {
        color: #4299e1;
        text-decoration: underline;
    }

    .footer-credits {
        margin-top: 10px;
    }

    @media (min-width: 768px) {
        .footer-credits {
            margin-top: 0;
        }
    }

    .footer-credits p {
        margin: 0;
        color: #cbd5e0;
        font-size: 0.9rem;
    }

    .footer-credits .fa-heart {
        color: #e53e3e;
    }