/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(to bottom, #000f5c, #610099);
    color: white;
    line-height: 1.6;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
.container {
    max-width: 1200px;
    margin: auto;
    padding: 20px;
    position: relative;
}
.header {
    text-align: center;
    margin-bottom: 40px;
}
.header h1 {
    font-size: 3rem;
    font-weight: bold;
    background: -webkit-linear-gradient(#ffffff, #39ff14);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.navbar {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
    position: sticky;
    top: 0;
    background: rgba(0, 0, 0, 0.8);
    padding: 10px 0;
    z-index: 1000;
}
.navbar .tab {
    padding: 10px 20px;
    background-color: #333;
    color: white;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
.navbar .tab:hover,
.navbar .tab.active {
    background-color: #39ff14;
    color: black;
}
.content {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}
.card {
    flex: 1 1 calc(33.33% - 20px);
    background-color: #1e1e1e;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    padding: 20px;
    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: #39ff14;
}
.card p {
    color: #ccc;
}
.code-block {
    background: #000;
    color: #39ff14;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    margin: 20px 0;
}
.article {
    margin-top: 40px;
    background: rgba(0, 0, 0, 0.7);
    padding: 20px;
    border-radius: 10px;
}
.article h2 {
    font-size: 2rem;
    margin-bottom: 20px;
}
.article h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}
.article pre {
    margin: 20px 0;
}
.footer {
    text-align: center;
    margin-top: 40px;
    font-size: 0.9rem;
    color: #aaa;
}
/* 响应式设计 */
@media (max-width: 1024px) {
    .card {
        flex: 1 1 calc(50% - 20px);
    }
}
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        align-items: center;
    }
    .card {
        flex: 1 1 100%;
    }
}