/* 通用样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
}

a {
    color: #4CAF50;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

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

.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.3s;
}

.btn-primary {
    background: #4CAF50;
    color: white;
}

.btn-secondary {
    background: #2196F3;
    color: white;
}

.btn-danger {
    background: #f44336;
    color: white;
}

.btn:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

/* 响应式 */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .btn {
        padding: 8px 16px;
        font-size: 14px;
    }
}