/* 基础样式 - 全局统一 */
body {
    background-color: #f9fafb;
    color: #111827;
    line-height: 1.6;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 80rem;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* 导航栏样式 */
nav {
    background-color: #ffffff;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px 0 rgba (0, 0, 0, 0.1), 0 1px 2px 0 rgba (0, 0, 0, 0.06);
    padding: 1rem;
    margin-bottom: 2rem;
}

nav a {
    color: #2563eb;
    text-decoration: none;
    padding: 0.5rem;
    font-weight: 500;
    transition: color 0.2s ease-in-out;
}

nav a:hover {
    color: #1d4ed8;
    text-decoration: underline;
}

nav a.font-bold {
    color: #1d4ed8;
    font-weight: 700;
}

/* 标题样式 */
h1 {
    font-size: 2.25rem;
    font-weight: 700;
    color: #111827;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

h2 {
    font-size: 1.875rem;
    font-weight: 600;
    color: #111827;
    margin-top: 2rem;
    margin-bottom: 1rem;
    line-height: 1.3;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #111827;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

/* 内容卡片样式 */
.content-card {
    background-color: #ffffff;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px 0 rgba (0, 0, 0, 0.1), 0 1px 2px 0 rgba (0, 0, 0, 0.06);
    padding: 1.5rem;
    margin-bottom: 2rem;
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.content-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* 文本样式 */
p {
    margin-bottom: 1rem;
    color: #4b5563;
}

ul,
ol {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    color: #4b5563;
}

li {
    margin-bottom: 0.5rem;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: #2563eb;
    color: #ffffff;
    border-radius: 0.375rem;
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.2s ease-in-out;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: #1d4ed8;
    text-decoration: none;
}

/* 提示框样式 */
.info-box {
    background-color: #eff6ff;
    border-left: 4px solid #2563eb;
    padding: 1rem;
    margin-bottom: 1.5rem;
    border-radius: 0 0.375rem 0.375rem 0;
}

.info-box p {
    color: #1e40af;
    margin: 0;
}

/* Markdown 内容专用样式（继承自页面 4） */
.markdown-content h1 {
    font-size: 2rem;
    margin: 1.5rem 0 1rem;
    border-bottom: 1px solid #eaecef;
    padding-bottom: 0.3rem;
}

.markdown-content h2 {
    font-size: 1.5rem;
    margin: 1.5rem 0 1rem;
    border-bottom: 1px solid #eaecef;
    padding-bottom: 0.3rem;
}

.markdown-content code {
    background-color: #f6f8fa;
    padding: 0.2em 0.4em;
    border-radius: 3px;
    font-family: monospace;
}

.markdown-content pre {
    background-color: #f6f8fa;
    padding: 1rem;
    border-radius: 5px;
    margin-bottom: 1rem;
    overflow-x: auto;
}

.markdown-content blockquote {
    border-left: 4px solid #ddd;
    padding-left: 1rem;
    color: #666;
    margin-bottom: 1rem;
}

.markdown-content img {
    max-width: 100%;
    border-radius: 5px;
    margin: 1rem 0;
}

/* 动画效果 */
.animate-fadeIn {
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* 响应式调整 */
@media (max-width: 640px) {
    h1 {
        font-size: 1.875rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    nav a {
        display: inline-block;
        margin-bottom: 0.5rem;
    }

    .container {
        padding: 1rem 0.5rem;
    }
}