/* 响应式布局支持 */
@media screen and (max-width: 1200px) {
    .container {
        width: 100%;
        padding: 0 15px;
    }
}

/* 移动端响应式样式 */
@media screen and (max-width: 768px) {
    body {
        min-width: auto;
    }

    .container {
        width: 100%;
        padding: 0 15px;
        box-sizing: border-box;
    }

    /* 头部响应式 */
    header {
        height: 300px;
        background-size: cover;
    }

    .top-nav {
        top: 20px;
        right: 15px;
        display: none;
    }

    .top-nav a {
        margin-left: 10px;
        font-size: 12px;
        width: 70px;
        height: 26px;
    }

    .header-main {
        padding-top: 10px;
    }

    .header-main img {
        width: 160px;
    }

    /* 页脚响应式 */
    footer {
        padding: 30px 0;
    }

    .footer-links {
        flex-direction: column;
        padding-bottom: 30px;
    }

    .government-links {
        justify-content: center;
        margin-bottom: 20px;
    }

    .government-links .gov-link.n1 {
        height: 28px;
        width: 107px;
    }

    .government-links .gov-link.n2 {
        height: 25px;
        width: 104px;
    }

    .department-links {
        flex-direction: column;
        align-items: center;
    }

    .link-group {
        width: 90%;
        margin: 5px 0;
        height: 40px;
        font-size: 14px;
    }

    .footer-info {
        margin-top: 30px;
        flex-direction: column;
        align-items: center;
    }

    .certifications {
        margin-bottom: 20px;
    }

    .cert-link.n1 {
        width: 60px;
        height: 60px;
    }

    .cert-link.n2 {
        width: 82px;
        height: 41px;
    }

    .cert-link.n3 {
        width: 90px;
        height: 42px;
    }

    .site-info .links {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
    }

    .site-info .links a {
        font-size: 14px;
        margin: 5px;
    }

    .record-info {
        font-size: 14px;
        text-align: center;
    }

    .site-info p {
        font-size: 14px;
        text-align: center;
    }
}

/* 平板响应式样式 */
@media screen and (min-width: 769px) and (max-width: 1200px) {
    body {
        min-width: auto;
    }

    .container {
        width: 100%;
        padding: 0 20px;
    }

    header {
        height: 400px;
    }

    .header-main img {
        width: 180px;
    }

    .footer-links {
        padding-bottom: 40px;
    }

    .link-group {
        width: 180px;
    }

    .footer-info {
        margin-top: 40px;
    }
}