/* 页脚 */
    .footer {
        background-color: #000000;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        padding-top: 2rem;
        padding-bottom: 2rem;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 1rem;
        margin-bottom: 3rem;
    }

    @media (min-width: 768px) {
        .footer-grid {
            grid-template-columns: repeat(5, 1fr);
        }
    }

    @media (max-width: 1024px) {
        .footer-grid {
            grid-template-columns: repeat(4, 1fr);
        }
    }

    @media (max-width: 480px) {
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1rem;
            margin-bottom: 3rem;
        }
    }

    .footer-logo {
        font-size: 1.875rem;
        font-weight: bold;
        color: #74e4de;
        letter-spacing: 0.1em;
        font-family: 'Rajdhani', sans-serif;
        text-shadow: 0 0 10px rgba(0, 255, 65, 0.5);
    }

    @media (max-width: 768px) {
        .footer-logo {
            display: none;
        }
    }

    .footer-column-title {
        color: #ffffff;
        font-weight: bold;
        font-size: 0.875rem;
        letter-spacing: 0.05em;
        margin-bottom: 1rem;
    }

    .footer-links {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }

    .footer-link {
        color: #cdcdcd;
        font-size: 0.875rem;
        text-decoration: none;
        transition: all 0.3s;
        text-overflow: ellipsis;
        white-space: nowrap;
        overflow: hidden;
        width: 220px;
    }

    .footer-link:hover {
        color: #74e4de;
        text-decoration: underline;
        text-decoration-color: #74e4de;
        text-underline-offset: 4px;
    }


    .footer-weixin {
        text-align: center;
    }