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

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    background-color: #f4f4f4;
    color: #333;
}

header {
    background-color: #62697A; /* 应用提取的颜色 */
    color: #fff;
    padding: 10px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

header .logo {
    flex: 1;
    text-align: center;
}

header .logo img {
    max-width: 150px; /* 桌面端的 logo 最大宽度 */
    height: auto; /* 保持宽高比 */
}

.menu-toggle {
    display: none;
    font-size: 24px;
    cursor: pointer;
    padding-right: 20px;
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
}

header nav ul {
    list-style: none;
    display: flex;
    margin-right: 20px;
}

header nav ul li {
    margin: 0 15px;
}

header nav ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
}

header nav ul li a:hover {
    text-decoration: underline;
}

section {
    padding: 20px;
    margin: 20px auto;
    width: 80%;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

section h2 {
    margin-bottom: 15px;
}

footer {
    text-align: center;
    padding: 10px 0;
    background-color: #333;
    color: #fff;
    margin-top: 20px;
}

footer p {
    margin: 0;
}

/* 手机屏幕自适应 */
@media (max-width: 768px) {
    header {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }

    .menu-toggle {
        display: block;
    }

    header .logo {
        flex: 1;
        text-align: center;
    }

    header .logo img {
        max-width: 70%; /* 手机端的 logo 占据屏幕宽度的 70% */
        height: auto;
        margin: 0 auto;
    }

    header nav {
        display: none;
        width: 100%;
    }

    header nav.active {
        display: block;
    }

    header nav ul {
        flex-direction: column;
        align-items: flex-start;
        margin-top: 10px;
        width: 100%;
    }

    header nav ul li {
        margin: 10px 0;
    }

    section {
        width: 90%;
        padding: 15px;
    }
}