* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 40px 20px;
}

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

h1 {
    text-align: center;
    color: white;
    margin-bottom: 50px;
    font-size: 2.5rem;
}

.card-container {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    justify-content: center;
}

.card {
    background: white;
    border-radius: 16px;
    padding: 30px;
    width: 300px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-10px);
}

.card h2 {
    color: #333;
    margin-bottom: 15px;
}

.card p {
    color: #666;
    margin-bottom: 25px;
    line-height: 1.6;
}

.btn {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    transition: opacity 0.3s;
}

.btn:hover {
    opacity: 0.9;
}