/* 现代极简风格 */
body {
    font-family: 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background: #f5f5f5;
}

header {
    background: #333;
    color: white;
    padding: 1rem;
    text-align: center;
}

nav a {
    color: white;
    margin: 0 15px;
    text-decoration: none;
}

.hero {
    text-align: center;
    padding: 4rem 2rem;
}

button {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    border-radius: 5px;
}