:root {
    --primary-color: #003366;
    --secondary-color: #B8860B;
    --text-color: #333;
    --light-bg: #f5f5f5;
    --white: #fff;
}

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

body {
    font-family: "Microsoft YaHei", sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    padding-top: 80px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 头部样式 */
header {
    background: var(--white);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
    height: 80px;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    height: 100%;
    padding: 15px 0;
}

.logo img {
    height: 40px;
    width: auto;
    margin-right: 15px;
}

.company-name {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.company-name h1 {
    font-size: 22px;
    color: var(--primary-color);
    margin-bottom: 2px;
    line-height: 1.2;
}

.company-name p {
    font-size: 13px;
    color: var(--secondary-color);
    line-height: 1.2;
}

nav {
    height: 100%;
    display: flex;
    align-items: center;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 10px;
    height: 100%;
    align-items: center;
}

nav ul li {
    height: 100%;
    display: flex;
    align-items: center;
}

nav ul li a {
    display: flex;
    align-items: center;
    padding: 0 20px;
    height: 40px;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.3s ease;
    border-radius: 4px;
    font-size: 15px;
}

nav ul li a:hover,
nav ul li a.active {
    color: var(--primary-color);
    background-color: rgba(0,51,102,0.05);
}

/* 通用标题样式 */
.section-title {
    text-align: center;
    font-size: 32px;
    color: var(--primary-color);
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--secondary-color);
}

/* 页脚样式 */
footer {
    background: var(--primary-color);
    color: var(--white);
    padding: 60px 0 40px;
    margin-top: 80px;
}

.contact-info h3 {
    font-size: 24px;
    margin-bottom: 25px;
    color: var(--secondary-color);
}

.contact-info p {
    margin-bottom: 15px;
    font-size: 16px;
    opacity: 0.9;
}

.copyright {
    text-align: center;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 14px;
    opacity: 0.8;
}

/* 响应式设计 */
@media (max-width: 768px) {
    body {
        padding-top: 60px;
    }
    
    header {
        height: 60px;
    }
    
    .logo img {
        height: 40px;
    }
    
    .company-name h1 {
        font-size: 20px;
    }
    
    .company-name p {
        font-size: 12px;
    }
    
    nav ul {
        gap: 10px;
    }
    
    nav ul li a {
        padding: 8px 12px;
        font-size: 14px;
    }
} 

/* 响应式导航 */
@media (max-width: 768px) {
    header {
        height: 60px;
    }

    .logo {
        padding: 10px 0;
    }

    .logo img {
        height: 30px;
    }

    .company-name h1 {
        font-size: 18px;
    }

    .company-name p {
        font-size: 11px;
    }

    nav ul {
        gap: 5px;
    }

    nav ul li a {
        padding: 0 12px;
        height: 34px;
        font-size: 14px;
    }
}

/* 移动端菜单按钮 */
@media (max-width: 576px) {
    nav {
        display: none; /* 在小屏幕上先隐藏,后续可以添加汉堡菜单 */
    }
}