/* 主体样式设置 */

/* 全局样式 */
body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    color: #ffffff;
    overflow-x: hidden;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar ul {
    list-style: none;
    display: flex;
    justify-content: space-around;
    padding: 15px 0;
    margin: 0;
}

.navbar li {
    position: relative;
}

.navbar a {
    color: #ffffff;
    text-decoration: none;
    padding: 10px 15px;
    transition: color 0.3s ease;
}

.navbar a:hover {
    color: #a1c4fd;
}

/* 下拉菜单样式 */
.dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 10px;
    padding: 10px;
}

.navbar li:hover .dropdown {
    display: block;
}

.dropdown a {
    display: block;
    padding: 8px 12px;
    color: #ffffff;
}

.dropdown a:hover {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 5px;
}

/* 提示信息样式 */
.prompt {
    text-align: center;
    padding: 80px 20px 20px 20px;
    font-size: 18px;
    background: rgba(0, 0, 0, 0.5);
    margin-top: 60px;
    border-radius: 10px;
}

/* 容器布局 */
.container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 40px;
}

/* 卡片样式 */
.card {
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 15px;
    padding: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 40px rgba(0,0,0,0.2);
}

/* 图片样式 */
.card img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    transition: transform 0.3s ease;
}

.card img:hover {
    transform: scale(1.05);
}

/* 标题样式 */
h2, h3, h4 {
    color: #a1c4fd;
}

/* 正文样式 */
p {
    font-size: 16px;
    line-height: 1.6;
    color: #ffffff;
}

/* 代码块样式 */
pre {
    background: rgba(0, 0, 0, 0.8);
    padding: 15px;
    border-radius: 10px;
    overflow: auto;
}

code {
    color: #ffcc00;
    font-family: 'Courier New', Courier, monospace;
}

/* 按钮样式 */
.button {
    background: linear-gradient(90deg, #a1c4fd, #c2e9fb);
    border: none;
    padding: 15px 30px;
    color: #fff;
    border-radius: 25px;
    cursor: pointer;
    transition: background 0.5s ease, transform 0.3s ease;
}

.button:hover {
    background: linear-gradient(90deg, #c2e9fb, #a1c4fd);
    transform: scale(1.05);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar ul {
        flex-direction: column;
        align-items: center;
    }
    .container {
        grid-template-columns: 1fr;
        padding: 20px;
    }
    .prompt {
        font-size: 16px;
    }
}