/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft Yahei", sans-serif;
}

/* 头部样式 */
header {
    background-color: #2a579a;
    color: white;
    padding: 10px 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.header-container {
    width: 90%;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

    .logo img {
        width: 60px;
        height: 60px;
        margin-right: 15px;
    }

    .logo h1 {
        font-size: 24px;
        letter-spacing: 0.2rem;
    }

nav ul {
    display: flex;
    list-style: none;
}

    nav ul li {
        margin-left: 25px;
    }

        nav ul li a {
            color: white;
            text-decoration: none;
            font-size: 16px;
            padding: 5px 10px;
            border-radius: 5px;
            transition: background-color 0.3s;
        }

            nav ul li a:hover {
                background-color: #1e4278;
            }

/* 页脚 */
footer {
    background-color: #2a579a;
    color: white;
    padding: 30px;
    text-align: center;
}

.footer-container {
    width: 90%;
    margin: 0 auto;
}

.footer-links {
    margin-bottom: 20px;
}

    .footer-links a {
        color: white;
        text-decoration: none;
        margin: 0 10px;
    }

.copyright {
    font-size: 14px;
    opacity: 0.8;
}

/* 响应式适配 */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        text-align: center;
    }

    nav ul {
        margin-top: 15px;
        justify-content: center;
    }

        nav ul li {
            margin: 0 10px;
        }

    .banner {
        height: 300px;
    }

    .banner-text h2 {
        font-size: 28px;
    }

    .section-title {
        font-size: 24px;
    }
}