body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    color: #333;
}

header {
    background-color: #f0f0f0;
    padding: 20px;
    text-align: center;
}

main {
    padding: 20px;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.portfolio-item {
    border: 1px solid #ccc;
    padding: 15px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.portfolio-item img {
    width: 100%;
    height: auto;
    margin-bottom: 10px;
}

.project-description {
    margin-bottom: 10px;
    text-align: left;
}

a {
    color: #007bff;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 10px;
}

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