/* 重置默认样式，确保跨浏览器一致性 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 设置全局字体和背景渐变 */
body {
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #1a1a2e, #16213e, #0f3460);
    color: #ffffff;
    line-height: 1.6;
    padding: 20px;
    transition: background 0.5s ease;
}

/* 导航栏样式 */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.7);
    padding: 15px 30px;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    backdrop-filter: blur(10px);
    transition: background 0.3s ease;
}

.navbar.scrolled {
    background: rgba(0, 0, 0, 0.9);
}

.navbar a {
    color: #ffffff;
    text-decoration: none;
    margin: 0 15px;
    font-size: 16px;
    transition: color 0.3s ease;
}

.navbar a:hover {
    color: #ffcc00;
}

/* 主要内容容器 */
.container {
    max-width: 1200px;
    margin: 100px auto 50px auto; /* 留出导航栏空间 */
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

/* 模块样式 */
.module {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.3);
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.module:hover {
    transform: translateY(-10px);
    box-shadow: 0 16px 32px rgba(0,0,0,0.4);
}

/* 标题样式 */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    margin-bottom: 15px;
    color: #ffffff;
}

h2 {
    font-size: 24px;
    border-bottom: 2px solid #ffcc00;
    padding-bottom: 10px;
}

h3 {
    font-size: 20px;
    margin-top: 20px;
}

/* 图片样式 */
img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

img:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 16px rgba(0,0,0,0.3);
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 10px 20px;
    background: linear-gradient(45deg, #ff6347, #ff8c00);
    color: #ffffff;
    border: none;
    border-radius: 25px;
    text-decoration: none;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.3s ease, transform 0.3s ease;
}

.btn:hover {
    background: linear-gradient(45deg, #ff8c00, #ff6347);
    transform: translateY(-5px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
    }
    .container {
        grid-template-columns: 1fr;
    }
}

/* 高级CSS效果：按钮动画 */
@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(255, 204, 0, 0.7);
    }
    70% {
        box-shadow: 0 0 0 20px rgba(255, 204, 0, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(255, 204, 0, 0);
    }
}

.btn-pulse {
    position: relative;
    animation: pulse 2s infinite;
}