* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
    color: #fff;
    min-height: 100vh;
    background: url('111.png') no-repeat center center fixed;
    background-size: cover;
    display: flex;
    flex-direction: column;
    position: relative;
}

.container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background-color: rgba(0, 0, 0, 0.5); /* 半透明黑色背景，提高文字可读性 */
}

header {
    padding: 2rem;
}

.logo {
    max-width: 100px;
}

.logo img {
    max-width: 100%;
    height: auto;
}

main {
    flex: 1;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    padding: 2rem;
    padding-left: 15%;
}

.qr-code {
    text-align: center;
    background-color: rgba(255, 255, 255, 0.9);
    padding: 1rem;
    border-radius: 8px;
    color: #333;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    max-width: 200px;
}

.qr-code h2 {
    margin-bottom: 0.8rem;
    font-size: 1rem;
}

.qr-code-image {
    margin: 0 auto;
}

.qr-code-image img {
    max-width: 120px;
    height: auto;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

footer {
    padding: 1.5rem;
    text-align: center;
    background-color: rgba(0, 0, 0, 0.7);
}

.beian {
    margin-bottom: 0.8rem;
    font-size: 0.9rem;
}

.beian a {
    color: #fff;
    text-decoration: none;
    transition: opacity 0.3s;
}

.beian a:hover {
    opacity: 0.8;
}

.beian img {
    vertical-align: middle;
    margin-right: 5px;
}

.separator {
    margin: 0 10px;
}

.copyright {
    font-size: 0.8rem;
    opacity: 0.8;
}

/* 响应式设计 */
@media (max-width: 768px) {
    header {
        padding: 1.5rem;
    }
    
    .logo {
        max-width: 80px;
        margin: 0 auto;
    }
    
    main {
        padding-left: 10%;
    }
    
    .qr-code {
        padding: 1.2rem;
    }
    
    .qr-code-image img {
        max-width: 120px;
    }
}

@media (max-width: 480px) {
    header {
        padding: 1rem;
    }
    
    .logo {
        max-width: 70px;
    }
    
    main {
        padding-left: 5%;
    }
    
    .qr-code h2 {
        font-size: 1rem;
    }
    
    .qr-code-image img {
        max-width: 100px;
    }
    
    .beian {
        font-size: 0.8rem;
    }
    
    .separator {
        margin: 0 5px;
    }
    
    .copyright {
        font-size: 0.7rem;
    }
}