/* 全局样式 */
body {
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #001F3F, #4C0099, #00FF99);
    background-size: 200% 200%;
    animation: gradient-flow 12s ease infinite;
    color: #ffffff;
    margin: 0;
    padding: 0;
}

/* 渐变背景动画 */
@keyframes gradient-flow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* 标题样式 */
h1, h2 {
    text-align: center;
    text-transform: uppercase;
    font-weight: bold;
    background: linear-gradient(90deg, #00FF99, #4C0099);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-top: 30px;
}

/* 文章容器 */
.article-container {
    max-width: 1200px;
    margin: 30px auto;
    padding: 20px;
    background: rgba(0, 0, 0, 0.6);
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

/* 章节 */
.article-container h3 {
    color: #00FF99;
    margin-top: 20px;
    border-left: 4px solid #00FF99;
    padding-left: 10px;
}

/* 代码块 */
pre {
    background: rgba(0, 0, 0, 0.9);
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}

/* 列表样式 */
ul {
    list-style: none;
    padding: 0;
}

ul li {
    background: linear-gradient(90deg, #00FF99, #4C0099);
    padding: 10px;
    margin: 5px 0;
    border-radius: 5px;
}

/* 按钮样式 */
.button {
    display: block;
    width: 200px;
    margin: 20px auto;
    padding: 10px;
    background: linear-gradient(90deg, #4C0099, #00FF99);
    border: none;
    border-radius: 25px;
    text-align: center;
    color: white;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.button:hover {
    box-shadow: 0 0 20px #00FF99;
}

/* 图片网格 */
.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 10px;
    margin-top: 20px;
}

.image-grid img {
    width: 100%;
    border-radius: 10px;
}

/* 响应式布局 */
@media (max-width: 768px) {
    body {
        font-size: 14px;
    }

    .article-container {
        padding: 15px;
    }
}

@media (max-width: 480px) {
    h1, h2 {
        font-size: 24px;
    }

    .button {
        width: 100%;
    }
}