/* 全局样式 */
body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #1a2a6c, #b21f1f, #fdbb2d);
    color: #ffffff;
    line-height: 1.6;
}

header {
    background: rgba(0, 0, 0, 0.7);
    padding: 20px;
    text-align: center;
    font-family: 'Montserrat', sans-serif;
    font-size: 2em;
    font-weight: bold;
    color: #39ff14;
}

nav {
    display: flex;
    justify-content: center;
    background: rgba(26, 26, 26, 0.9);
    padding: 10px 0;
}

nav a {
    color: #87ceeb;
    margin: 0 15px;
    text-decoration: none;
    font-size: 1.1em;
    transition: color 0.3s;
}

nav a:hover {
    color: #39ff14;
}

.container {
    padding: 20px;
    max-width: 1200px;
    margin: auto;
}

h2, h3, h4 {
    font-family: 'Montserrat', sans-serif;
    color: #39ff14;
    margin-top: 20px;
}

p {
    font-size: 1em;
    color: #ffffff;
}

pre {
    background: rgba(0, 0, 0, 0.8);
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    color: #39ff14;
    font-family: 'Courier New', Courier, monospace;
    margin: 20px 0;
}

code {
    color: #ffcc00;
}

.tabs-container {
    display: flex;
    flex-direction: column;
    margin: 30px 0;
}

.tabs-header {
    display: flex;
    justify-content: space-around;
    background: rgba(26, 26, 26, 0.9);
    border-radius: 5px;
}

.tab-item {
    padding: 10px 20px;
    cursor: pointer;
    transition: background 0.3s;
    color: #87ceeb;
}

.tab-item:hover, .tab-item.active {
    background: #333333;
    color: #39ff14;
}

.tabs-content {
    display: none;
    padding: 20px;
    background: rgba(0, 0, 0, 0.7);
    border-radius: 5px;
    animation: fadeIn 0.5s ease-in-out;
}

.tabs-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.article-section {
    margin: 40px 0;
}

.image-gallery {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 20px 0;
}

.image-gallery img {
    width: 100%;
    max-width: 320px;
    border-radius: 5px;
}

.notice {
    background: rgba(255, 215, 0, 0.8);
    color: #000;
    padding: 10px;
    text-align: center;
    font-weight: bold;
    border-radius: 5px;
}

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

    nav a {
        margin: 10px 0;
    }

    .tabs-header {
        flex-direction: column;
    }

    .tab-item {
        width: 100%;
        text-align: center;
    }

    .image-gallery {
        flex-direction: column;
        align-items: center;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        padding: 30px;
    }

    h2 {
        font-size: 2em;
    }

    p {
        font-size: 1.1em;
    }
}

@media (min-width: 1200px) {
    .container {
        padding: 40px;
    }

    h2 {
        font-size: 2.5em;
    }

    p {
        font-size: 1.2em;
    }
}