/* 全局样式设置 */
body {
    margin: 0;
    padding: 0;
    font-family: 'Open Sans', sans-serif;
    background: linear-gradient(135deg, #1e3c72 70%, #2a5298 25%, #ff7e5f 5%);
    color: #333;
    line-height: 1.6;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(30, 60, 114, 0.9);
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar a {
    color: #fff;
    text-decoration: none;
    margin: 0 15px;
    transition: color 0.3s;
}
.navbar a:hover {
    color: #feb47b;
}

/* 面包屑导航样式 */
.breadcrumb {
    display: flex;
    list-style: none;
    padding: 20px 30px;
    background: rgba(255, 255, 255, 0.1);
}
.breadcrumb li + li:before {
    content: ">";
    padding: 0 8px;
    color: #fff;
}
.breadcrumb a {
    color: #fff;
    text-decoration: none;
    transition: color 0.3s;
}
.breadcrumb a:hover {
    color: #feb47b;
}

/* 主容器样式 */
.container {
    max-width: 1200px;
    margin: 100px auto 50px;
    padding: 0 15px;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

/* 侧边导航样式 */
.sidebar {
    flex: 1 1 200px;
    background: rgba(255, 255, 255, 0.2);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}
.sidebar ul {
    list-style: none;
    padding: 0;
}
.sidebar li {
    margin-bottom: 15px;
}
.sidebar a {
    color: #fff;
    text-decoration: none;
    transition: color 0.3s;
}
.sidebar a:hover {
    color: #feb47b;
}

/* 内容区域样式 */
.content {
    flex: 3 1 700px;
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

/* 标题样式 */
h2, h3, h4 {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    color: #1e3c72;
    margin-bottom: 20px;
}
h2 {
    font-size: 24px;
}
h3 {
    font-size: 20px;
}
h4 {
    font-size: 18px;
}

/* 段落与列表样式 */
p, ul {
    font-size: 16px;
}
ul li {
    margin-bottom: 10px;
}

/* 按钮样式 */
.button {
    background: #ff7e5f;
    color: #fff;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s;
}
.button:hover {
    transform: scale(1.05);
    background: #feb47b;
}

/* 图片样式 */
img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}
img:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 20px rgba(0,0,0,0.2);
}

/* 卡片式设计 */
.card {
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    padding: 20px;
    transition: transform 0.3s, box-shadow 0.3s;
}
.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 20px rgba(0,0,0,0.2);
}

/* 代码块样式 */
code {
    background: rgba(30, 60, 114, 0.1);
    padding: 2px 4px;
    border-radius: 4px;
    font-family: 'Courier New', Courier, monospace;
}
pre {
    background: rgba(30, 60, 114, 0.05);
    padding: 15px;
    border-radius: 10px;
    overflow-x: auto;
}
pre code {
    display: block;
    color: #ff7e5f;
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
.fade-in {
    animation: fadeIn 1s ease-in-out;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .container {
        flex-direction: column;
    }
}
@media (max-width: 768px) {
    h2 {
        font-size: 20px;
    }
    h3 {
        font-size: 18px;
    }
    h4 {
        font-size: 16px;
    }
    .sidebar {
        flex: 1 1 100%;
    }
    .content {
        flex: 1 1 100%;
    }
}
@media (max-width: 480px) {
    .navbar {
        flex-direction: column;
        align-items: flex-start;
    }
    .breadcrumb {
        flex-direction: column;
        align-items: flex-start;
    }
    .button {
        width: 100%;
        text-align: center;
    }
}