/* 全局样式 */
body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #0000FF, #8A2BE2);
    color: #FFFFFF;
    line-height: 1.6;
}

.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.header {
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(45deg, #0000FF, #8A2BE2, #00FFFF);
    background-size: 300% 300%;
    animation: gradientShift 10s ease infinite;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.header h1 {
    font-size: 3rem;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.navbar {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
}

.navbar a {
    text-decoration: none;
    color: #FFFFFF;
    font-size: 1.2rem;
    padding: 10px 20px;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.navbar a:hover {
    background: linear-gradient(135deg, #00FFFF, #00FF00);
    color: #000000;
}

.content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 40px 20px;
}

.card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: scale(1.05);
}

.card img {
    width: 100%;
    height: auto;
    border-radius: 10px;
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #00FFFF;
}

.card p {
    font-size: 1rem;
    color: #FFFFFF;
}

.code-block {
    background: #000000;
    color: #00FF00;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    line-height: 1.4;
}

.footer {
    text-align: center;
    padding: 20px;
    background: linear-gradient(135deg, #0000FF, #8A2BE2);
    color: #FFFFFF;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }

    .navbar {
        flex-direction: column;
        gap: 10px;
    }

    .card {
        padding: 15px;
    }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}