/* 全局样式 - 参考 Medium/Notion 的优雅设计 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 浅色模式（默认） */
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #10b981;
    --background-color: #ffffff;
    --background-secondary: #f9fafb;
    --background-modal: #ffffff;
    --text-color: #1f2937;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    --border-color: #e5e7eb;
    --code-bg: #f3f4f6;
    --link-color: #2563eb;
    --link-hover: #1d4ed8;

    /* 聊天消息框颜色 */
    --left-msg-bg: #c0e2ff;
    --left-msg-text: #1f2937;
    --right-msg-bg: #95ec69a1;
    --right-msg-text: #1f2937;

    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);

    /* 模态框 */
    --modal-overlay: rgba(0, 0, 0, 0.5);
    --close-btn-color: #aaaaaa;
    --close-btn-hover: #000000;
}

/* 深色模式 - 自动跟随系统 */
@media (prefers-color-scheme: dark) {
    :root {
        --primary-color: #58a6ff;
        --primary-hover: #79c0ff;
        --secondary-color: #2ea043;
        --background-color: #0d1117;
        --background-secondary: #161b22;
        --background-modal: #1c2128;
        --text-color: #c9d1d9;
        --text-secondary: #8b949e;
        --text-tertiary: #6e7681;
        --border-color: #30363d;
        --code-bg: #161b22;
        --link-color: #58a6ff;
        --link-hover: #79c0ff;

        --left-msg-bg: #0f3266;
        --left-msg-text: #e2e8f0;
        --right-msg-bg: #0e3f1a;
        /* Dark Green */
        --right-msg-text: #ffffff;

        --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
        --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
        --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);

        --modal-overlay: rgba(0, 0, 0, 0.7);
        --close-btn-color: #8b949e;
        --close-btn-hover: #c9d1d9;
    }

    .markdown-content img,
    #sharePoster {
        opacity: 0.9;
        transition: opacity 0.3s;
    }

    .markdown-content img:hover,
    #sharePoster:hover {
        opacity: 1;
    }
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    line-height: 1.75;
    color: var(--text-color);
    background-color: var(--background-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 容器 */
.container {
    max-width: 100%;
    width: 100%;
    margin: 0 auto;
    padding: 0;
    flex: 1;
    background-color: var(--background-color);
}

.container>* {
    max-width: 768px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
}

/* 面包屑导航 */
.breadcrumb {
    padding: var(--spacing-md) 0 var(--spacing-xl);
    margin-bottom: 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.breadcrumb a:hover {
    color: var(--primary-color);
}

.breadcrumb .separator {
    margin: 0 var(--spacing-xs);
    color: var(--text-tertiary);
}

.breadcrumb .current {
    color: var(--text-color);
    font-weight: 500;
}

/* Markdown内容 */
.markdown-content {
    background-color: transparent;
    padding: 0;
    line-height: 1.75;
    width: 100%;
    max-width: 768px;
    margin: 0 auto;
    overflow-x: hidden;
}

/* 标题 */
.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.markdown-content h4,
.markdown-content h5,
.markdown-content h6 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-color);
    letter-spacing: -0.02em;
}

.markdown-content h1 {
    font-size: 2rem;
    margin-top: 0;
    margin-bottom: var(--spacing-xl);
}

.markdown-content h2 {
    font-size: 1.6rem;
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.markdown-content h3 {
    font-size: 1.2rem;
}

.markdown-content h4 {
    font-size: 1rem;
}

.markdown-content h5 {
    font-size: 0.9rem;
}

.markdown-content h6 {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* 段落和链接 */
.markdown-content p {
    margin-bottom: var(--spacing-lg);
    color: var(--text-color);
}

.markdown-content a {
    color: var(--link-color);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: all 0.2s ease;
}

.markdown-content a:hover {
    color: var(--link-hover);
    border-bottom-color: var(--link-hover);
}

/* 列表 */
.markdown-content ul,
.markdown-content ol {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-xl);
}

.markdown-content li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.75;
}

.markdown-content ul ul,
.markdown-content ol ol,
.markdown-content ul ol,
.markdown-content ol ul {
    margin-top: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

/* 代码块 */
.markdown-content code {
    background-color: var(--code-bg);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-family: ui-monospace, SFMono-Regular, SF Mono, Menlo, Consolas, Liberation Mono, monospace;
    font-size: 0.875em;
    color: var(--primary-color);
    /* 代码高亮适应深色 */
}

.markdown-content pre {
    background-color: var(--code-bg);
    padding: var(--spacing-lg);
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--border-color);
}

.markdown-content pre code {
    background-color: transparent;
    padding: 0;
    color: inherit;
    font-size: 0.875rem;
    line-height: 1.6;
}

/* 表格 */
.table-wrapper {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-bottom: var(--spacing-lg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.markdown-content table {
    border-collapse: collapse;
    width: 100%;
    margin-bottom: 0;
    font-size: 0.9375rem;
}

.markdown-content table thead {
    background-color: var(--background-secondary);
}

.markdown-content table th,
.markdown-content table td {
    border: 1px solid var(--border-color);
    padding: var(--spacing-md);
    text-align: left;
    white-space: nowrap;
}

.markdown-content table th {
    font-weight: 600;
    color: var(--text-color);
}

.markdown-content table tr:hover {
    background-color: var(--background-secondary);
}

/* 引用 */
.markdown-content blockquote {
    border-left: 3px solid var(--primary-color);
    padding-left: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    color: var(--text-secondary);
    font-style: italic;
}

.markdown-content blockquote p:last-child {
    margin-bottom: 0;
}

.markdown-content hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: var(--spacing-xl) 0;
}

.markdown-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: var(--spacing-lg) 0;
}

/* 聊天消息框 */
.chat-message {
    margin: var(--spacing-md) 0;
    padding: 0 var(--spacing-lg);
    border-radius: 18px;
    max-width: min(80%, 640px);
    width: fit-content;
    position: relative;
    white-space: normal;
    word-wrap: break-word;
    font-size: 0.95rem;
    line-height: 1.6;
}

.chat-message p {
    margin: 0;
}

.left-message {
    background-color: var(--left-msg-bg);
    color: var(--left-msg-text);
    margin-right: auto;
    border-radius: 2px 18px 18px 18px;
    text-align: left;
    box-shadow: var(--shadow-sm);
}

.right-message {
    background-color: var(--right-msg-bg);
    color: var(--right-msg-text);
    margin-left: auto;
    border-radius: 18px 2px 18px 18px;
    text-align: left;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
}

.right-message a {
    color: #2563eb;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.right-message a:hover {
    color: #1d4ed8;
}

/* 锚点 */
.anchor-only {
    display: block;
    height: 0;
    visibility: hidden;
}

.anchor-link {
    opacity: 0;
    margin-left: 0.5rem;
    font-size: 0.85em;
    transition: opacity 0.2s ease;
    text-decoration: none;
    border: none !important;
    color: var(--text-tertiary);
}

.markdown-content p:hover .anchor-link,
.markdown-content h1:hover .anchor-link,
.markdown-content h2:hover .anchor-link,
.markdown-content h3:hover .anchor-link,
.markdown-content h4:hover .anchor-link,
.markdown-content h5:hover .anchor-link,
.markdown-content h6:hover .anchor-link {
    opacity: 1;
}

/* 页脚 */
footer {
    background-color: transparent;
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.875rem;
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-2xl);
}

/* 错误页面 */
.error-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
}

.error-content {
    text-align: center;
    padding: var(--spacing-2xl);
}

.error-content h1 {
    font-size: 5rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    font-weight: 700;
}

.error-content h2 {
    font-size: 1.875rem;
    margin-bottom: var(--spacing-lg);
    color: var(--text-color);
    font-weight: 600;
}

.error-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    font-size: 1rem;
}

.back-home {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    transition: background-color 0.2s ease;
    font-size: 0.9375rem;
    font-weight: 500;
}

.back-home:hover {
    background-color: var(--primary-hover);
}

/* 分享样式 */
.footer-content {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
}

.share-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color 0.2s;
}

.share-btn:hover {
    color: var(--primary-color);
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: var(--modal-overlay);
    backdrop-filter: blur(4px);
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: var(--background-modal);
    padding: var(--spacing-lg);
    border-radius: 12px;
    width: 90%;
    max-width: 480px;
    text-align: center;
    position: relative;
    box-shadow: var(--shadow-lg);
}

.close-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    color: var(--close-btn-color);
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
}

.close-btn:hover,
.close-btn:focus {
    color: var(--close-btn-hover);
    text-decoration: none;
    cursor: pointer;
}

.poster-container {
    margin: var(--spacing-md) 0;
    min-height: 200px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--background-secondary);
    border-radius: 8px;
}

#sharePoster {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    box-shadow: var(--shadow-md);
}

.share-hint {
    color: var(--text-tertiary);
    font-size: 0.875rem;
    margin-top: var(--spacing-md);
}

/* 加载动画 */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

/* 响应式设计 - 移动端 */
@media (max-width: 768px) {
    body {
        font-size: 16px;
        background-color: var(--background-color);
    }

    .container {
        padding: var(--spacing-md);
        max-width: 100%;
    }

    .container>* {
        max-width: 100%;
        padding-left: 0;
        padding-right: 0;
    }

    .markdown-content {
        padding: 0;
        max-width: 100%;
    }

    .markdown-content h1 {
        font-size: 1.6rem;
    }

    .markdown-content h2 {
        font-size: 1.4rem;
    }

    .markdown-content h3 {
        font-size: 1.2rem;
    }

    .markdown-content h4 {
        font-size: 1.1rem;
    }

    .breadcrumb {
        font-size: 0.8125rem;
        padding: var(--spacing-sm) 0;
    }

    .chat-message {
        max-width: 85%;
    }

    .error-content h1 {
        font-size: 3.5rem;
    }

    .error-content h2 {
        font-size: 1.5rem;
    }
}

/* 平板设备 */
@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        max-width: 90%;
    }

    .chat-message {
        max-width: 80%;
    }
}

/* 打印样式 */
@media print {

    .breadcrumb,
    footer,
    .share-btn {
        display: none;
    }

    .markdown-content {
        padding: 0;
    }

    .anchor-link {
        display: none;
    }

    body,
    .container,
    .markdown-content {
        background-color: white;
        color: black;
    }
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    line-height: 1.75;
    color: var(--text-color);
    background-color: var(--background-color);
    /* PC端白色背景 */
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 容器 - 参考 GitHub/Notion 的全宽设计 */
.container {
    max-width: 100%;
    /* 全宽 */
    width: 100%;
    margin: 0 auto;
    padding: 0;
    flex: 1;
    background-color: var(--background-color);
}

/* 内容包裹层 - 限制阅读宽度 */
.container>* {
    max-width: 768px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
}

/* 面包屑导航 - 简洁设计 */
.breadcrumb {
    padding: var(--spacing-md) 0 var(--spacing-xl);
    margin-bottom: 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.breadcrumb a:hover {
    color: var(--primary-color);
}

.breadcrumb .separator {
    margin: 0 var(--spacing-xs);
    color: var(--text-tertiary);
}

.breadcrumb .current {
    color: var(--text-color);
    font-weight: 500;
}

/* Markdown内容区域 - 去除边框和阴影，更加简洁 */
.markdown-content {
    background-color: transparent;
    padding: 0;
    line-height: 1.75;
    width: 100%;
    max-width: 768px;
    margin: 0 auto;
    overflow-x: hidden;
}

/* 标题样式 - 参考 Medium */
.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.markdown-content h4,
.markdown-content h5,
.markdown-content h6 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-color);
    letter-spacing: -0.02em;
}

.markdown-content h1 {
    font-size: 2rem;
    margin-top: 0;
    margin-bottom: var(--spacing-xl);
}

.markdown-content h2 {
    font-size: 1.6rem;
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.markdown-content h3 {
    font-size: 1.2rem;
}

.markdown-content h4 {
    font-size: 1rem;
}

.markdown-content h5 {
    font-size: 0.9rem;
}

.markdown-content h6 {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* 段落 */
.markdown-content p {
    margin-bottom: var(--spacing-lg);
    color: var(--text-color);
}

/* 链接 */
.markdown-content a {
    color: var(--link-color);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: all 0.2s ease;
}

.markdown-content a:hover {
    color: var(--link-hover);
    border-bottom-color: var(--link-hover);
}

/* 列表 */
.markdown-content ul,
.markdown-content ol {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-xl);
}

.markdown-content li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.75;
}

.markdown-content ul ul,
.markdown-content ol ol,
.markdown-content ul ol,
.markdown-content ol ul {
    margin-top: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

/* 代码块 */
.markdown-content code {
    background-color: var(--code-bg);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-family: "SF Mono", "Monaco", "Inconsolata", "Fira Code", "Fira Mono", "Roboto Mono", monospace;
    font-size: 0.875em;
    color: #e01e5a;
}

.markdown-content pre {
    background-color: var(--code-bg);
    padding: var(--spacing-lg);
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--border-color);
}

.markdown-content pre code {
    background-color: transparent;
    padding: 0;
    color: inherit;
    font-size: 0.875rem;
    line-height: 1.6;
}

/* 表格包裹容器 */
.table-wrapper {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-bottom: var(--spacing-lg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

/* 表格 */
.markdown-content table {
    border-collapse: collapse;
    width: 100%;
    margin-bottom: 0;
    font-size: 0.9375rem;
}

.markdown-content table thead {
    background-color: var(--background-secondary);
}

.markdown-content table th,
.markdown-content table td {
    border: 1px solid var(--border-color);
    padding: var(--spacing-md);
    text-align: left;
    white-space: nowrap;
}

.markdown-content table th {
    font-weight: 600;
    color: var(--text-color);
}

.markdown-content table tr:hover {
    background-color: var(--background-secondary);
}

/* 引用 */
.markdown-content blockquote {
    border-left: 3px solid var(--primary-color);
    padding-left: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    color: var(--text-secondary);
    font-style: italic;
}

.markdown-content blockquote p:last-child {
    margin-bottom: 0;
}

/* 水平线 */
.markdown-content hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: var(--spacing-xl) 0;
}

/* 图片 */
.markdown-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: var(--spacing-lg) 0;
}

/* 聊天消息框样式 - 参考 iMessage/Telegram */
.chat-message {
    margin: var(--spacing-md) 0;
    padding: 0 var(--spacing-lg);
    border-radius: 18px;
    max-width: min(80%, 640px);
    width: fit-content;
    position: relative;
    white-space: pre-wrap;
    word-wrap: break-word;
    font-size: 0.95rem;
    line-height: 1.6;
}

.chat-message p {
    margin: 0;
}

.left-message {
    background-color: var(--left-msg-bg);
    color: var(--left-msg-text);
    margin-right: auto;
    border-radius: 2px 18px 18px 18px;
    text-align: left;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.right-message {
    background-color: var(--right-msg-bg);
    color: var(--right-msg-text);
    margin-left: auto;
    border-radius: 18px 2px 18px 18px;
    text-align: left;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
}

/* 锚点样式 */
.anchor-only {
    display: block;
    height: 0;
    visibility: hidden;
}

.anchor-link {
    opacity: 0;
    margin-left: 0.5rem;
    font-size: 0.85em;
    transition: opacity 0.2s ease;
    text-decoration: none;
    border: none !important;
    color: var(--text-tertiary);
}

/* 为包含锚点链接的段落添加悬停效果 */
.markdown-content p:has(.anchor-link):hover .anchor-link,
.markdown-content h1:has(.anchor-link):hover .anchor-link,
.markdown-content h2:has(.anchor-link):hover .anchor-link,
.markdown-content h3:has(.anchor-link):hover .anchor-link,
.markdown-content h4:has(.anchor-link):hover .anchor-link,
.markdown-content h5:has(.anchor-link):hover .anchor-link,
.markdown-content h6:has(.anchor-link):hover .anchor-link {
    opacity: 1;
}

/* 兼容不支持:has()的浏览器 */
.markdown-content p:hover .anchor-link,
.markdown-content h1:hover .anchor-link,
.markdown-content h2:hover .anchor-link,
.markdown-content h3:hover .anchor-link,
.markdown-content h4:hover .anchor-link,
.markdown-content h5:hover .anchor-link,
.markdown-content h6:hover .anchor-link {
    opacity: 1;
}

/* 页脚 */
footer {
    background-color: transparent;
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.875rem;
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-2xl);
}

/* 错误页面 */
.error-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
}

.error-content {
    text-align: center;
    padding: var(--spacing-2xl);
}

.error-content h1 {
    font-size: 5rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    font-weight: 700;
}

.error-content h2 {
    font-size: 1.875rem;
    margin-bottom: var(--spacing-lg);
    color: var(--text-color);
    font-weight: 600;
}

.error-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    font-size: 1rem;
}

.back-home {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    transition: background-color 0.2s ease;
    font-size: 0.9375rem;
    font-weight: 500;
}

.back-home:hover {
    background-color: var(--primary-hover);
}

/* 响应式设计 - 移动端 */
@media (max-width: 768px) {
    body {
        font-size: 16px;
        background-color: var(--background-color);
        /* 移动端使用白色背景 */
    }

    .container {
        padding: var(--spacing-md);
        /* 减少内边距 */
        max-width: 100%;
    }

    /* 移动端重置container子元素样式 */
    .container>* {
        max-width: 100%;
        padding-left: 0;
        padding-right: 0;
    }

    .markdown-content {
        padding: 0;
        /* 移除内边距，充分利用空间 */
        max-width: 100%;
    }

    .markdown-content h1 {
        font-size: 1.6rem;
    }

    .markdown-content h2 {
        font-size: 1.4rem;
    }

    .markdown-content h3 {
        font-size: 1.25rem;
    }

    .markdown-content h4 {
        font-size: 1.125rem;
    }

    .breadcrumb {
        font-size: 0.8125rem;
        padding: var(--spacing-sm) 0 var(--spacing-xl);
    }

    .chat-message {
        max-width: 85%;
        padding: 0 var(--spacing-md);
        font-size: 0.95rem;
    }

    .markdown-content table {
        font-size: 0.875rem;
    }

    .markdown-content table th,
    .markdown-content table td {
        white-space: nowrap;
        min-width: 80px;
        padding: var(--spacing-sm);
    }

    .error-content h1 {
        font-size: 3.5rem;
    }

    .error-content h2 {
        font-size: 1.5rem;
    }
}

/* 平板设备 */
@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        max-width: 90%;
    }

    .chat-message {
        max-width: 80%;
    }
}

/* 打印样式 */
@media print {

    .breadcrumb,
    footer,
    .share-btn {
        display: none;
    }

    .markdown-content {
        padding: 0;
    }

    .anchor-link {
        display: none;
    }

    body {
        background-color: white;
    }
}

/* 分享样式 */
.footer-content {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
}

.share-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color 0.2s;
}

.share-btn:hover {
    color: var(--primary-color);
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: 12px;
    width: 90%;
    max-width: 480px;
    text-align: center;
    position: relative;
    box-shadow: var(--shadow-lg);
}

.close-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    color: #aaaaaa;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
}

.close-btn:hover,
.close-btn:focus {
    color: #000;
    text-decoration: none;
    cursor: pointer;
}

.poster-container {
    margin: var(--spacing-md) 0;
    min-height: 200px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--background-secondary);
    border-radius: 8px;
}

#sharePoster {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    box-shadow: var(--shadow-md);
}

.share-hint {
    color: var(--text-tertiary);
    font-size: 0.875rem;
    margin-top: var(--spacing-md);
}

/* 加载动画 */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}