/* 全局样式 */
body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #1e2a47, #00449e);
    color: white;
    line-height: 1.6;
    overflow-x: hidden;
    animation: aurora-move 15s linear infinite;
}

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

h1, h2, h3, h4, h5, h6 {
    color: #007bff;
    margin-top: 2rem;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 768px) {
    .container {
        grid-template-columns: 200px 1fr;
    }
}

.sidebar {
    background: radial-gradient(circle, rgba(255, 87, 34, 0.2), transparent);
    padding: 15px;
    border-radius: 8px;
    position: sticky;
    top: 20px;
    align-self: start;
}

.sidebar a {
    display: block;
    color: white;
    text-decoration: none;
    padding: 10px;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.sidebar a:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.main-content {
    background: rgba(255, 255, 255, 0.05);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.tabs {
    display: flex;
    justify-content: space-around;
    background-color: #1e2a47;
    color: white;
    border-radius: 8px;
    margin-bottom: 20px;
}

.tab-item {
    padding: 10px 20px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    border-radius: 4px;
}

.tab-item.active {
    background-color: #007bff;
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.grid-item {
    background-color: #f9fafb;
    color: black;
    padding: 16px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.grid-item img {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

th, td {
    padding: 10px;
    text-align: left;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

pre {
    background: #1e2a47;
    color: white;
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
}

.content {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.content.active {
    opacity: 1;
}

.note {
    background: #ff5722;
    color: white;
    padding: 10px;
    border-radius: 4px;
    text-align: center;
    margin-bottom: 20px;
}

@media (max-width: 768px) {
    .tabs {
        flex-direction: column;
    }

    .grid-container {
        grid-template-columns: 1fr;
    }
}