/* 全局样式设置 */
body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif; /* 使用现代无衬线字体 */
    font-size: 16px;
    color: #333333;
    background: linear-gradient(135deg, #0D2C54 70%, #34C791 30%); /* 主色调为深蓝与青绿的渐变背景 */
    overflow-x: hidden; /* 防止水平滚动 */
}

/* 容器设置 */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(13, 44, 84, 0.9); /* 深蓝色半透明背景 */
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
}

.navbar .logo {
    font-size: 1.5em;
    color: #FFFFFF;
    font-weight: bold;
}

.navbar .nav-links {
    display: flex;
    gap: 15px;
}

.navbar .nav-links a {
    color: #FFFFFF;
    text-decoration: none;
    font-size: 1em;
    transition: color 0.3s ease;
}

.navbar .nav-links a:hover {
    color: #FFA500; /* 橙色悬停效果 */
}

/* 主内容区 */
.main {
    padding-top: 80px; /* 导航栏高度 */
}

/* 文章样式 */
article {
    background-color: rgba(255, 255, 255, 0.8);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    margin-bottom: 40px;
}

article h2, article h3, article h4 {
    color: #0D2C54;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

article h2 {
    font-size: 2em;
    margin-bottom: 20px;
}

article h3 {
    font-size: 1.5em;
    margin-top: 30px;
}

article h4 {
    font-size: 1.2em;
    margin-top: 20px;
}

article p {
    line-height: 1.6;
    margin: 15px 0;
}

article pre {
    background-color: #F5F5F5;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    box-shadow: inset 0 0 10px rgba(0,0,0,0.05);
}

article code {
    font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New', monospace;
    color: #D14;
    background-color: #F5F5F5;
    padding: 2px 4px;
    border-radius: 4px;
}

/* 图片样式 */
img.decorative {
    width: 320px;
    height: 320px;
    border-radius: 15px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin: 20px;
}

img.decorative:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 16px rgba(0,0,0,0.3);
}

/* 警示信息样式 */
.notice {
    background-color: #FFA500;
    color: #FFFFFF;
    text-align: center;
    padding: 10px 0;
    font-size: 1.2em;
    font-weight: bold;
}

/* 页脚样式 */
.footer {
    background-color: rgba(13, 44, 84, 0.9);
    color: #FFFFFF;
    padding: 30px 0;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.footer .section {
    flex: 1;
    min-width: 250px;
    margin: 10px;
}

.footer a {
    color: #FFA500;
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

/* 按钮样式 */
.button-primary {
    background-color: #FFA500;
    color: #FFFFFF;
    padding: 10px 20px;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.button-primary:hover {
    background-color: #FF8C00;
    transform: translateY(-3px);
}

/* 悬浮客服按钮 */
.chat-button {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: #FFA500;
    border: none;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    cursor: pointer;
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.chat-button:hover {
    background-color: #FF8C00;
    transform: scale(1.1);
}

/* 响应式布局 */
@media (max-width: 768px) {
    .navbar .nav-links {
        flex-direction: column;
        align-items: center;
        display: none; /* 默认隐藏 */
    }

    .navbar .nav-links.active {
        display: flex;
    }

    .navbar .menu-toggle {
        display: block;
        cursor: pointer;
        color: #FFFFFF;
        font-size: 1.5em;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 15px;
    }

    article {
        padding: 20px;
    }

    img.decorative {
        width: 100%;
        height: auto;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 1s ease forwards;
    opacity: 0;
}

/* 链接添加nofollow */
a[rel="nofollow"] {
    /* 样式定义，确保不影响视觉 */
}

/* 折叠区域样式 */
.collapsible {
    background-color: #34C791;
    color: white;
    cursor: pointer;
    padding: 10px;
    width: 100%;
    border: none;
    text-align: left;
    outline: none;
    font-size: 1.1em;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.collapsible:hover {
    background-color: #0D2C54;
}

.content {
    padding: 0 15px;
    display: none;
    overflow: hidden;
    background-color: #f1f1f1;
    border-radius: 5px;
}

.content.show {
    display: block;
}