/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 头部样式 */
header {
    background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    color: white;
    text-align: center;
    padding: 60px 0;
    margin-bottom: 40px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 3rem;
    margin-bottom: 10px;
    letter-spacing: 1px;
}

header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* 项目卡片样式 */
.projects {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.project-card {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease, opacity 0.5s ease;
    padding: 30px;
    text-align: center;
    position: relative;
    opacity: 0;
    transform: translateY(20px);
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.project-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-icon i {
    font-size: 32px;
    color: white;
}

.project-card h2 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #333;
}

.project-card p {
    color: #666;
    margin-bottom: 25px;
    font-size: 0.95rem;
}

.btn {
    display: inline-block;
    background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    color: white;
    padding: 10px 25px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(37, 117, 252, 0.4);
}

/* 页脚样式 */
footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 20px 0;
    margin-top: 40px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    header {
        padding: 40px 0;
    }
    
    header h1 {
        font-size: 2.2rem;
    }
    
    .projects {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 20px;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.8rem;
    }
    
    header p {
        font-size: 1rem;
    }
    
    .projects {
        grid-template-columns: 1fr;
    }
}