<style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        .footer {
            background-color: #4d4d4d;
            color: #ffffff;
            padding: 30px 20px;
            width: 100%;
            position: relative;
        }

        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            text-align: center;
        }

        .social-icons {
            margin-bottom: 20px;
            display: flex;
            justify-content: center;
            gap: 25px;
            flex-wrap: wrap;
        }

        .social-icons a {
            color: #ffffff;
            font-size: 22px;
            transition: all 0.3s ease;
            text-decoration: none;
            position: relative;
        }

        .social-icons a:hover {
            color: #00aaff;
            transform: translateY(-3px);
        }

        .wechat-qrcode {
            position: absolute;
            bottom: 40px;
            left: 50%;
            transform: translateX(-50%);
            width: 120px;
            height: 120px;
            background: #fff;
            padding: 5px;
            border-radius: 4px;
            box-shadow: 0 0 10px rgba(0,0,0,0.2);
            display: none;
            z-index: 999;
        }

        .wechat-qrcode img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .wechat-icon:hover .wechat-qrcode {
            display: block;
        }

        .footer-divider {
            height: 1px;
            background-color: #777;
            margin: 20px 0;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        .copyright {
            font-size: 14px;
            color: #eeeeee;
            line-height: 1.8;
            font-family: Microsoft YaHei;
        }

        @media (max-width: 768px) {
            .social-icons { gap: 18px; }
            .social-icons a { font-size: 18px; }
            .copyright { font-size: 12px; }
            .wechat-qrcode { width: 100px; height: 100px; }
        }
    </style>