/* 全局样式设置 */
body {
    margin: 0;
    font-family: 'Open Sans', sans-serif;
    background: linear-gradient(135deg, #F5F5F5 0%, #E8E8E8 100%);
    color: #333333;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

h1, h2, h3 {
    font-family: 'Roboto Slab', serif;
    margin-top: 0;
}

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

/* 头部导航 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(51, 51, 51, 0.9);
    color: #C0C0C0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header .logo {
    font-size: 1.5em;
    font-weight: bold;
    color: #FFFFFF;
}

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

.nav-links a {
    color: #C0C0C0;
    text-decoration: none;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #1E90FF;
}

.mobile-menu {
    display: none;
}

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(135deg, #333333 0%, #1E90FF 100%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: #FFFFFF;
    text-align: center;
    padding: 20px;
    position: relative;
}

.hero h1 {
    font-size: 3em;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2em;
    max-width: 600px;
}

.cta-buttons {
    margin-top: 30px;
    display: flex;
    gap: 20px;
}

.cta-button {
    background-color: #1E90FF;
    color: #FFFFFF;
    padding: 15px 30px;
    border: none;
    border-radius: 5px;
    font-size: 1em;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
}

.cta-button:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* 功能与性能 */
.features {
    background-color: #FFFFFF;
    padding: 50px 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-item {
    text-align: center;
    padding: 20px;
    border-radius: 10px;
    background: linear-gradient(135deg, #F5F5F5 0%, #E8E8E8 100%);
    transition: transform 0.3s;
}

.feature-item:hover {
    transform: translateY(-10px);
}

.feature-item img {
    width: 50px;
    margin-bottom: 15px;
}

/* 营销文章 */
.marketing-article {
    background-color: #F5F5F5;
    padding: 40px 20px;
    border-radius: 10px;
    margin: 50px 0;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.marketing-article h2 {
    color: #1E90FF;
}

.marketing-article p {
    font-size: 1em;
    line-height: 1.8;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        align-items: flex-start;
    }

    .nav-links {
        flex-direction: column;
        width: 100%;
    }

    .hero h1 {
        font-size: 2em;
    }

    .cta-buttons {
        flex-direction: column;
    }
}

/* 小屏幕优化 */
@media (max-width: 480px) {
    body {
        font-size: 14px;
    }

    .hero {
        height: auto;
        padding: 40px 10px;
    }

    .features {
        grid-template-columns: 1fr;
    }
}

/* 产品图片 */
.product-image {
    max-width: 200px;
    margin: 0 auto;
    display: block;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* 页脚 */
.footer {
    background-color: #333333;
    color: #FFFFFF;
    text-align: center;
    padding: 20px;
    margin-top: auto;
}