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

body {
    font-family: 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
}

.header {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    padding: 20px 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #2c3e50;
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-text {
    font-size: 18px;
    line-height: 1.2;
    color: #2c3e50;
}

.logo img {
    height: 50px;
    width: auto;
    margin-right: 10px;
}

.nav-menu {
    display: flex;
    gap: 20px;
}

.nav-link {
    color: #2c3e50;
    text-decoration: none;
    padding: 5px 10px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.nav-link:hover {
    background-color: #f8f9fa;
}

.nav-link.active {
    background-color: #2c3e50;
    color: #fff;
}

.banner {
    position: relative;
    height: 400px;
    overflow: hidden;
    background-color: #f8f9fa;
}

.banner-slide {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.banner-slide.active {
    opacity: 1;
}

.banner-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    background: rgba(0, 0, 0, 0.3);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s;
}

.banner-nav:hover {
    background: rgba(0, 0, 0, 0.6);
}

.banner-prev {
    left: 20px;
}

.banner-next {
    right: 20px;
}

.banner-indicators {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
}

.banner-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: background-color 0.3s;
}

.banner-indicator.active {
    background: #fff;
}

.main-content {
    padding: 60px 0;
}

.company-intro {
    margin-bottom: 40px;
}

h1 {
    font-size: 32px;
    margin-bottom: 30px;
    color: #2c3e50;
}

p {
    margin-bottom: 20px;
    font-size: 16px;
    line-height: 1.8;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature-item {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 8px;
    text-align: center;
}

.feature-item h3 {
    margin-bottom: 15px;
    color: #2c3e50;
}

.footer {
    background-color: #2c3e50;
    color: #fff;
    padding: 20px 0;
    position: fixed;
    bottom: 0;
    width: 100%;
    text-align: center;
}

.beian-link {
    color: #fff;
    text-decoration: none;
    display: inline-block;
    padding: 5px 10px;
    transition: color 0.3s;
}

.beian-link:hover {
    color: #ddd;
}