* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft Yahei", sans-serif;
}
body {
    background-color: #0a192f;
    color: #ccd6f6;
    line-height: 1.6;
}
/* 导航栏 */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 50px;
    background: rgba(10, 25, 47, 0.95);
    border-bottom: 1px solid #172a45;
}
.logo {
    color: #64ffda;
    font-size: 22px;
    font-weight: bold;
}
.nav-links {
    display: flex;
    gap: 40px;
}
.nav-links a {
    color: #ccd6f6;
    text-decoration: none;
    font-size: 15px;
    transition: color 0.3s;
}
.nav-links a:hover, .nav-links a.active {
    color: #64ffda;
}
/* 首页Hero区域 */
.hero {
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: linear-gradient(135deg, #0a192f 0%, #112240 100%);
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><rect width="100" height="100" fill="none"/><circle cx="20" cy="20" r="1" fill="%2364ffda" opacity="0.3"/></svg>') repeat;
    opacity: 0.1;
}
.hero h1 {
    font-size: 48px;
    color: #e6f1ff;
    margin-bottom: 15px;
}
.hero p {
    font-size: 20px;
    color: #8892b0;
    margin-bottom: 30px;
}
.btn {
    padding: 12px 30px;
    background: transparent;
    border: 1px solid #64ffda;
    color: #64ffda;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.3s;
}
.btn:hover {
    background: rgba(100, 255, 218, 0.1);
}
/* 通用容器 */
.container {
    max-width: 1200px;
    margin: 50px auto;
    padding: 0 20px;
}
/* 案例页样式 */
.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 30px;
}
.case-card {
    background: #112240;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s;
}
.case-card:hover {
    transform: translateY(-5px);
}
.case-img {
    height: 200px;
    background: #172a45;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #64ffda;
    font-size: 24px;
}
.case-content {
    padding: 20px;
}
.case-content h3 {
    color: #e6f1ff;
    margin-bottom: 10px;
}
.case-content p {
    color: #8892b0;
    font-size: 14px;
}
/* 下载页样式 */
.download-section {
    margin-top: 30px;
}
.download-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}
.download-card {
    background: #112240;
    border: 1px solid #172a45;
    border-radius: 8px;
    padding: 20px;
    transition: border-color 0.3s;
}
.download-card:hover {
    border-color: #64ffda;
}
.download-name {
    color: #e6f1ff;
    font-size: 16px;
    margin-bottom: 10px;
    word-break: break-all;
}
.download-size {
    color: #8892b0;
    font-size: 14px;
    margin-bottom: 15px;
}
.download-btn {
    display: inline-block;
    width: 100%;
    text-align: center;
    padding: 8px;
    background: #64ffda;
    color: #0a192f;
    text-decoration: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: bold;
}
.empty-tip {
    text-align: center;
    color: #8892b0;
    padding: 50px 0;
    font-size: 18px;
}
/* 页脚 */
.footer {
    text-align: center;
    padding: 30px;
    background: #112240;
    color: #8892b0;
    margin-top: 50px;
}