/* 全局样式定义 */
body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(to bottom, #0f2027, #2c5364);
    color: white;
    line-height: 1.6;
    padding: 20px;
}

h1, h2, h3 {
    font-family: 'Poppins', sans-serif;
    color: #7c4dff;
    margin-top: 40px;
    margin-bottom: 20px;
}

p {
    font-size: 1rem;
    margin-bottom: 20px;
}

a {
    color: #f7dc6f;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

.module {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    position: relative;
}

pre {
    background: #0f2027;
    padding: 20px;
    border-radius: 5px;
    overflow-x: auto;
    font-size: 0.9rem;
}

code {
    color: #f7dc6f;
}

.button {
    background-color: #f7dc6f;
    color: #0f2027;
    border: none;
    padding: 15px 30px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: transform 0.3s ease;
}

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

.sparkle {
    position: absolute;
    width: 10px;
    height: 10px;
    background: #ffeb3b;
    border-radius: 50%;
    animation: sparkle 1s infinite;
}

@keyframes sparkle {
    0% { opacity: 0; transform: scale(0); }
    50% { opacity: 1; transform: scale(1); }
    100% { opacity: 0; transform: scale(0); }
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.image-grid img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    object-fit: cover;
}

.hidden {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease-in-out;
}

.show {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 768px) {
    h1, h2, h3 {
        font-size: 1.5rem;
    }

    .module {
        padding: 20px;
    }

    pre {
        font-size: 0.8rem;
    }

    .button {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}