/* CSS变量定义 - 自然花园主题 (参考Squirrel SouthEast配色) */
:root {
    --content-primary: #8b7fa8;        /* 紫色 - 主色调 (DNA螺旋) */
    --content-primary-dark: #6b5b95;   /* 深紫色 */
    --content-accent: #9b8bb4;         /* 浅紫色 - 强调色 */
    --content-accent-light: #b8aac8;   /* 更浅紫色 */
    --content-pink: #ff8fa3;           /* 粉红色 (水果) */
    --content-pink-light: #ffb6c1;     /* 浅粉色 */
    --content-green: #6fb36a;          /* 绿色 (叶子) */
    --content-green-light: #9dc88d;    /* 浅绿色 */
    --content-yellow: #fbbf24;         /* 黄色 (花心) */
    --content-light-bg: #fef8f1;       /* 米色 - 背景装饰 */
    --content-surface: #ffffff;        /* 白色底 */
    --content-bg: #fef8f1;             /* 米色背景 */
    --content-border: #e8d5c4;         /* 边框米色 */
    --content-text: #2d2d2d;           /* 深灰文字 */
    --content-muted: #6b6b6b;          /* 次要文字 */
}

.pdf_preview {
    width: 100%;
    height: 30vw;
    overflow: hidden;
    margin-bottom: 2rem;
    margin-top: 2rem;
}

.pdf_preview iframe {
    width: 100%;
    height: 100%;
    border: none;
}

smpt {
    display: contents !important;
}



/* smpt 加粗字体样式 - 柔和的粉红色 */
smpt {
    color: var(--content-pink);
    font-weight: 600;
    font-size: 1em;
    letter-spacing: 0;
    /* background: rgba(254, 248, 241, 0.6); */
    padding: 2px 8px;
    border-radius: 4px;
    line-height: inherit;
    display: block;
}


/* em 斜体样式 - 简洁版，用于专业术语 */
em {
    font-style: italic;
}

/* 侧边栏中的斜体保持紧凑 */
.wiki-sidebar em {
    font-style: italic;
    display: inline;
}

.cover_title {
    position: absolute;
    top: 40%;
    font-size: 5vw;
    font-family: 'title-font';
    color: white;
    /* text-decoration: underline; */
    transform: translateY(-50%);
}

.section-header::before {
    /* content: "◆"; */
    font-size: 1.8rem;
    color: var(--content-accent);
    flex-shrink: 0;
    margin-right: 4px;
}

.section-header::after {
    content: "";
    flex: 1;
    height: 2px;
    background: var(--content-border);
    margin-left: 20px;
}

/* a 超链接样式 - 柔和下划线 */
p a {
    color: var(--content-green);
    text-decoration: none;
    transition: all 0.2s ease;
    border-bottom: 1px solid rgba(111, 179, 106, 0.4);
    font-weight: 500;
    padding-bottom: 2px;
}

.content-card p a::after {
    content: "";
}

.content-card p a:hover {
    text-decoration: none;
    background-color: rgba(111, 179, 106, 0.15);
    color: var(--content-primary) !important;
    border-bottom-color: var(--content-green);
    padding: 2px 4px;
    padding-bottom: 2px;
    border-radius: 3px;
}

p a:active {
    color: var(--content-primary-dark);
    transform: translateY(0);
}

p a:visited {
    color: var(--content-green);
    opacity: 0.85;
}

/* 主内容区域布局 */
.wiki-content-wrapper {
    max-width: none;
    margin: 0;
    padding: 60px 18vw 60px 10vw; /* 调整右侧边距，与增加的内容宽度保持平衡 */
    position: relative;
    background: var(--content-surface); /* 白色背景 */
    min-height: 100vh;
    transition: background 0.3s ease;
}

.wiki-main-content {
    padding-left: 0;
    min-height: 100vh;
}


.sidebar-title img {
    width: 100%;
    height: auto;
    max-width: 100% !important;
}

/* =============================
   侧边栏目录设计
   ============================= */
.page_content {
    display: flex;
    gap: 2vw;
    justify-content: center;
    width: 100%;
    min-height: 100vh;
}

.wiki-sidebar {
    position: sticky;
    top: 120px;
    flex-shrink: 0;
    width: 16vw;
    max-height: calc(100vh - 200px);
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 24px 20px 24px 0;
    overflow-y: auto;
    overflow-x: hidden;
    z-index: 1;
    margin-left: -2vw;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}



.wiki-content-wrapper {
    flex: 1;
    max-width: 72vw; /* 调整为更小的宽度 */
    margin: 0;
    padding: 0 !important;
}

.sidebar-title {
    color: var(--content-primary);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 20px;
    padding: 0 0 12px 12px;
    letter-spacing: 0.5px;
    position: relative;
    text-align: left;
    border-bottom: none;
}

.sidebar-title img {
    width: 100%;
    height: auto;
    max-width: 200px;
    border-radius: 8px;
    margin-bottom: 10px;
}

/* 移除标题装饰 */
.sidebar-title::before {
    display: none;
}

.sidebar-title::after {
    display: none;
}

.sidebar-nav {
    list-style: none;
    padding: 0;
    margin: 0;
    counter-reset: sidebar-counter;
}

/* 一级导航项 - 简洁线性设计 */
.sidebar-item-level1 {
    margin-bottom: 6px;
    counter-increment: sidebar-counter;
    position: relative;
}

.sidebar-item-level1 > .nav-link {
    display: block;
    padding: 10px 12px 10px 12px;
    text-decoration: none;
    color: var(--content-text);
    border-radius: 0;
    font-weight: 600;
    font-size: 0.92rem;
    line-height: 1.6;
    background: transparent;
    border-left: 3px solid transparent;
    transition: all 0.2s ease;
    position: relative;
    word-break: break-word;
}

/* 移除装饰 */
.sidebar-item-level1 > .nav-link::before {
    display: none;
}

.sidebar-item-level1 > .nav-link::after {
    display: none;
}

.sidebar-item-level1 > .nav-link:hover {
    background: transparent;
    border-left-color: var(--content-accent);
    color: var(--content-primary);
    text-decoration: none;
    padding-left: 16px;
}

.sidebar-item-level1 > .nav-link.active {
    background: transparent;
    color: var(--content-primary);
    border-left-color: var(--content-accent);
    border-left-width: 3px;
    font-weight: 700;
}

/* 二级导航项 - 明显缩进设计 */
.sidebar-item-level2 {
    margin-bottom: 3px;
    margin-left: 20px;
    position: relative;
}

/* 添加连接线 */
.sidebar-item-level2::before {
    content: "";
    position: absolute;
    left: -8px;
    top: 12px;
    width: 8px;
    height: 1px;
    background: var(--content-border);
}

.sidebar-item-level2::after {
    display: none;
}

.sidebar-item-level2 > .nav-link {
    display: block;
    padding: 7px 12px 7px 12px;
    text-decoration: none;
    color: var(--content-muted);
    border-radius: 0;
    font-size: 0.85rem;
    font-weight: 400;
    line-height: 1.5;
    transition: all 0.2s ease;
    position: relative;
    background: transparent;
    border-left: 2px solid transparent;
}

/* 添加小圆点装饰 */
.sidebar-item-level2 > .nav-link::before {
    content: "•";
    position: absolute;
    left: -16px;
    color: var(--content-border);
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.sidebar-item-level2 > .nav-link:hover {
    color: var(--content-primary);
    background: transparent;
    text-decoration: none;
    padding-left: 16px;
}

.sidebar-item-level2 > .nav-link:hover::before {
    color: var(--content-accent);
}

.sidebar-item-level2 > .nav-link.active {
    color: var(--content-primary);
    background: transparent;
    font-weight: 600;
    border-left-color: var(--content-accent);
}

.sidebar-item-level2 > .nav-link.active::before {
    color: var(--content-accent);
    content: "▸";
}

/* 滚动条样式 - 独特的细线设计 */
.wiki-sidebar::-webkit-scrollbar {
    width: 4px;
}

.wiki-sidebar::-webkit-scrollbar-track {
    background: transparent;
    margin: 10px 0;
}

.wiki-sidebar::-webkit-scrollbar-thumb {
    background: var(--content-accent);
    border-radius: 2px;
    transition: background 0.3s ease;
}

.wiki-sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--content-primary);
}

/* =============================
   现代块状标题栏设计 - 大色块背景，宽度自适应
   ============================= */
.section-header {
    background: transparent;
    border-radius: 0;
    padding: 0;
    margin: 50px 0 30px 0;
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 20px;
}

.section-title {
    color: white;
    font-size: 2rem;
    font-weight: 800;
    margin: 0;
    font-family: 'Orbitron', serif;
    letter-spacing: 0.5px;
    background: linear-gradient(135deg, var(--content-primary) 0%, var(--content-accent) 100%);
    padding: 20px 40px;
    border-radius: 8px;
    display: inline-block;
    box-shadow: 0 4px 12px rgba(139, 127, 168, 0.3);
    transition: all 0.3s ease;
}

/* =============================
   扁平卡片式内容区域设计
   ============================= */
.content-card {
    background: var(--content-surface);
    border-radius: 12px;
    padding: 40px;
    margin: 30px 0;
    box-shadow: 0 2px 8px rgba(139, 127, 168, 0.08);
    border: 1px solid var(--content-border);
    line-height: 1.8;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    width: 100%;
    max-width: 100%;
    display: flex;
    flex-direction: column;
}

.content-card:hover {
    box-shadow: 0 4px 16px rgba(139, 127, 168, 0.15);
    border-color: var(--content-accent-light);
}

/* =============================
   标题样式设计（1-6级）
   ============================= */
.content-title {
    color: var(--content-text);
    font-weight: 700;
    margin-top: 2.5rem;
    margin-bottom: 1.5rem;
    position: relative;
    scroll-margin-top: 120px;
}

.content-title:first-child {
    margin-top: 0;
}

/* H1 - 主标题 */
.content-title.h1 {
    font-size: 2.4rem;
    color: #3d3d3d;
    margin-top: 3rem;
    margin-bottom: 2rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    position: relative;
    padding-bottom: 16px;
    border-bottom: 3px solid var(--content-accent);
}

.content-title.h1::after {
    display: none;
}

/* H2 - 主要章节 */
.content-title.h2 {
    font-size: 2rem;
    color: #3d3d3d;
    margin-top: 3rem;
    border-left: 4px solid var(--content-accent);
    padding-left: 20px;
    font-weight: 700;
}

/* H3 - 子章节 */
.content-title.h3 {
    font-size: 1.6rem;
    color: var(--content-text);
    margin-top: 2.5rem;
}

/* H4 - 小节 */
.content-title.h4 {
    font-size: 1.4rem;
    color: var(--content-text);
    margin-top: 2rem;
}



/* H5 - 子小节 */
.content-title.h5 {
    font-size: 1.2rem;
    color: var(--content-text);
    margin-top: 1.8rem;
}

/* H6 - 细分项 */
.content-title.h6 {
    font-size: 1.1rem;
    color: var(--content-muted);
    font-weight: 600;
    margin-top: 1.5rem;
}

/* =============================
   内容元素样式
   ============================= */

/* 段落和文本 */
.content-card p {
    font-size: 1.15rem;
    color: var(--content-text);
    text-align: justify;
    line-height: 1.8;
    margin-bottom: 0;
}

/* 段落中的 strong 标签 */
.content-card p strong {
    color: #4a4a4a;
    font-weight: 700;
}

.content-card ul, .content-card ol {
    margin-bottom: 2rem;
    padding-left: 2.5rem;
}

.content-card li {
    font-size: 1.1rem;
    color: var(--content-text);
    line-height: 1.7;
}

.content-card li strong {
    color: #4a4a4a;
    font-weight: 700;
}

/* 图片和媒体 */
.content-image {
    width: 100%;
    max-width: 100%;
    border-radius: 16px;
    /* box-shadow:
        0 12px 32px rgba(179, 66, 159, 0.12),
        0 4px 16px rgba(179, 66, 159, 0.08); */
    /* border: 1px solid rgba(179, 66, 159, 0.1); */
    margin: 0 auto;
    cursor: pointer;
}

/* 图片放大遮罩层 */
.image-lightbox-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.9);
    z-index: 99999;
    animation: fadeIn 0.3s ease;
    overflow: auto;
}

.image-lightbox-overlay.active {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-lightbox-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    animation: zoomIn 0.3s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 60px 20px;
}

.image-lightbox-content img {
    max-width: 100%;
    max-height: 90vh;
    height: auto;
    width: auto;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    cursor: default;
}

.image-lightbox-close {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    color: white;
    font-size: 24px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    z-index: 100000;
}

.image-lightbox-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}

/* 滚动条样式优化 */
.image-lightbox-overlay::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

.image-lightbox-overlay::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
}

.image-lightbox-overlay::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 5px;
}

.image-lightbox-overlay::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}

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

@keyframes zoomIn {
    from {
        transform: scale(0.8);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.image-caption {
    text-align: center !important;
    font-size: 0.95rem !important;
    color: var(--content-muted) !important;
    margin-top: 1rem !important;
}

/* 引用块 */
.content-quote {
    background: var(--content-light-bg);
    border-left: 4px solid var(--content-accent);
    padding: 20px 30px;
    margin: 3rem 0;
    border-radius: 0 8px 8px 0;
    font-style: italic;
    color: var(--content-text);
    font-size: 1.1rem;
    line-height: 1.7;
    position: relative;
}

.content-quote::before {
    content: "\"";
    position: absolute;
    top: 10px;
    left: 12px;
    font-size: 2.5rem;
    color: var(--content-accent);
    font-weight: bold;
    line-height: 1;
    opacity: 0.5;
}

/* 代码块 */
.content-code {
    background: var(--content-bg);
    border: 1px solid var(--content-border);
    border-left: 4px solid var(--content-primary);
    border-radius: 8px;
    padding: 24px;
    margin: 2.5rem 0;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.95rem;
    overflow-x: auto;
    box-shadow: 0 1px 3px rgba(139, 127, 168, 0.08);
}

/* =============================
   表格样式设计 - 清爽简洁风格
   ============================= */
.content-card table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 2.5rem 0;
    background: var(--content-surface);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(139, 127, 168, 0.1);
    border: 1px solid var(--content-border);
}

/* 表格标题行 - 使用柔和的米色背景 */
.content-card table thead {
    background: var(--content-light-bg);
    position: relative;
    border-bottom: 2px solid var(--content-accent);
}

.content-card table thead::after {
    display: none;
}

.content-card table thead th {
    padding: 16px 24px;
    text-align: left;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--content-primary);
    letter-spacing: 0.3px;
    border: none;
    position: relative;
    border-bottom: 2px solid var(--content-accent);
}

.content-card table thead th:first-child {
    padding-left: 28px;
    border-radius: 8px 0 0 0;
}

.content-card table thead th:last-child {
    border-radius: 0 8px 0 0;
}

.content-card table thead th:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 25%;
    height: 50%;
    width: 1px;
    background: var(--content-border);
}

/* 移除表头图标 */
.content-card table thead th::before {
    display: none;
}

/* 表格主体 */
.content-card table tbody tr {
    transition: all 0.2s ease;
    position: relative;
}

.content-card table tbody tr::before {
    display: none;
}

.content-card table tbody tr:nth-child(odd) {
    background: var(--content-surface);
}

.content-card table tbody tr:nth-child(even) {
    background: rgba(254, 248, 241, 0.4);
}

.content-card table tbody tr:hover {
    background: var(--content-light-bg);
    transform: translateX(0);
}

.content-card table tbody td {
    padding: 20px 24px;
    color: var(--content-text);
    font-size: 0.95rem;
    line-height: 1.7;
    border-bottom: 1px solid var(--content-border);
    vertical-align: top;
    position: relative;
}

.content-card table tbody td:first-child {
    padding-left: 28px;
    font-weight: 600;
    color: var(--content-primary);
}

.content-card table tbody tr:last-child td {
    border-bottom: none;
}

/* 表格内的强调文本 */
.content-card table td strong,
.content-card table th strong {
    color: var(--content-primary);
    font-weight: 700;
}




/* 表格分类列样式 - 仅针对有rowspan的单元格 */
.content-card table tbody td[rowspan] {
    font-weight: 700;
    color: var(--content-primary) !important;
    background: var(--content-light-bg) !important;
    position: relative;
    vertical-align: middle !important;
    text-align: left;
    font-size: 1rem !important;
    min-width: 120px;
    padding: 24px !important;
    border-right: 2px solid var(--content-accent);
}

.content-card table tbody td[rowspan]::after {
    display: none;
}

/* 表格第二列样式 - Specific measure 列 */
.content-card table tbody tr td:first-child:not([rowspan]),
.content-card table tbody tr:has(td[rowspan]) td:nth-child(2) {
    color: var(--content-primary);
    font-weight: 600;
}

/* 针对带有rowspan的行，调整hover效果 */
.content-card table tbody tr:has(td[rowspan]):hover td[rowspan] {
    background: var(--content-light-bg) !important;
}

/* 表格内 smpt 标签样式优化 */
.content-card table smpt {
    padding: 1px 4px;
    font-size: 0.9em;
}

/* 表格内的链接 */
.content-card table a {
    color: var(--content-primary);
    text-decoration: none;
    position: relative;
    transition: all 0.3s ease;
    padding: 2px 4px;
    border-radius: 3px;
}

.content-card table a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--content-accent);
    transition: width 0.3s ease;
}

.content-card table a:hover {
    background: var(--content-light-bg);
    color: var(--content-primary-dark);
}

.content-card table a:hover::after {
    width: 100%;
}

/* 表格容器 - 支持横向滚动 */
.table-wrapper {
    width: 100%;
    overflow-x: auto;
    margin: 2.5rem 0;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(139, 127, 168, 0.1);
}

.table-wrapper::-webkit-scrollbar {
    height: 8px;
}

.table-wrapper::-webkit-scrollbar-track {
    background: var(--content-bg);
    border-radius: 4px;
}

.table-wrapper::-webkit-scrollbar-thumb {
    background: var(--content-primary);
    border-radius: 4px;
}

.table-wrapper::-webkit-scrollbar-thumb:hover {
    background: var(--content-primary-dark);
}

/* 表格标题 */
.table-title {
    text-align: center;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--content-primary);
    margin-bottom: 1.5rem;
    font-family: 'Orbitron', serif;
    position: relative;
    padding-bottom: 12px;
}

.table-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--content-accent);
    border-radius: 2px;
}

/* 表格说明 */
.table-caption {
    text-align: center;
    font-size: 0.9rem;
    color: var(--content-muted);
    margin-top: 1rem;
    font-style: italic;
}

/* 响应式表格 */
@media (max-width: 768px) {
    .content-card table {
        font-size: 0.9rem;
        margin: 2rem 0;
    }
    
    .content-card table thead th {
        padding: 14px 12px;
        font-size: 0.9rem;
    }
    
    .content-card table tbody td {
        padding: 12px;
        font-size: 0.9rem;
    }
    
    /* 移动端可选：堆叠显示 */
    .content-card table.stack-on-mobile {
        border: none;
        box-shadow: none;
    }
    
    .content-card table.stack-on-mobile thead {
        display: none;
    }
    
    .content-card table.stack-on-mobile tbody tr {
        display: block;
        margin-bottom: 20px;
        border-radius: 12px;
        overflow: hidden;
        box-shadow: 0 4px 12px rgba(139, 127, 168, 0.15);
    }
    
    .content-card table.stack-on-mobile tbody td {
        display: block;
        text-align: right;
        padding: 12px;
        border-bottom: 1px solid rgba(139, 127, 168, 0.15);
        position: relative;
        padding-left: 50%;
    }
    
    .content-card table.stack-on-mobile tbody td::before {
        content: attr(data-label);
        position: absolute;
        left: 12px;
        width: 45%;
        text-align: left;
        font-weight: 600;
        color: var(--content-primary);
    }
    
    .content-card table.stack-on-mobile tbody td:last-child {
        border-bottom: none;
    }
}

/* =============================
   响应式设计
   注意：按照从大到小的顺序排列，更具体的规则（如平板横屏）放在最后
   ============================= */

@media (max-width: 1400px) {
    .wiki-content-wrapper {
        padding: 60px 15vw 60px 10vw;
    }

    .page_content {
        gap: 2vw;
    }

    .wiki-sidebar {
        width: 22vw;
    }

    .wiki-content-wrapper {
        max-width: 60vw;
    }
}

@media (max-width: 1200px) {
    .wiki-content-wrapper {
        padding: 50px 10vw 50px 8vw;
    }

    .page_content {
        gap: 2.5vw;
    }

    .wiki-sidebar {
        width: 26vw; /* 调整为更大的宽度 */
    }

    .wiki-content-wrapper {
        max-width: 56vw; /* 调整为更小的宽度 */
    }

    .section-header {
        padding: 18px 35px;
        margin: 35px 0 25px 0;
    }

    .section-title {
        font-size: 1.6rem;
    }
}

@media (max-width: 768px) {
    .wiki-content-wrapper {
        padding: 30px 5vw 30px 5vw;
    }

    .page_content {
        flex-direction: column;
        gap: 30px;
    }

    .wiki-sidebar {
        position: relative;
        top: auto;
        width: 100%;
        max-height: none;
        margin-right: 0;
    }

    .wiki-content-wrapper {
        max-width: 100%;
    }

    .section-header {
        padding: 16px 30px;
        margin: 30px 0 20px 0;
    }

    .section-title {
        font-size: 1.4rem;
    }

    .content-card {
        padding: 30px 25px;
        margin: 25px 0;
    }

    .content-title.h1 {
        font-size: 2rem;
    }

    .content-title.h2 {
        font-size: 1.7rem;
    }

    .content-title.h3 {
        font-size: 1.4rem;
    }

    .content-title.h4 {
        font-size: 1.2rem;
    }

    .content-card p {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .wiki-content-wrapper {
        padding: 20px 3vw 20px 3vw;
    }

    .section-header {
        padding: 14px 25px;
    }

    .section-title {
        font-size: 1.3rem;
    }

    .content-card {
        padding: 25px 20px;
    }

    .content-title.h1 {
        font-size: 1.8rem;
    }

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

    .content-quote {
        padding: 20px 24px;
        margin: 2rem 0;
    }
}

/* 确保文本可以被选择且可见 */
* {
    user-select: text;
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
}

/* 自定义文本选择样式 */
::selection {
    background-color: var(--content-light-bg) !important;
    color: var(--content-primary) !important;
    opacity: 1;
}

::-moz-selection {
    background-color: var(--content-light-bg) !important;
    color: var(--content-primary) !important;
    opacity: 1;
}

::-webkit-selection {
    background-color: var(--content-light-bg) !important;
    color: var(--content-primary) !important;
    opacity: 1;
}

/* 确保内容区域的文本选择正常工作 */
.content-card ::selection,
.content-card ::-moz-selection,
.content-card ::-webkit-selection {
    background-color: var(--content-light-bg) !important;
    color: var(--content-text) !important;
}

/* 确保标题的文本选择正常工作 */
.content-title ::selection,
.content-title ::-moz-selection,
.content-title ::-webkit-selection {
    background-color: rgba(139, 127, 168, 0.25) !important;
    color: inherit !important;
}

/* =============================
   滚动动画 - 已禁用
   ============================= */

/* 内容卡片和标题的淡入动画 - 已禁用 */
.fade-in-element {
    opacity: 1;
    transform: translateY(0);
    transition: none;
}

.fade-in-active {
    opacity: 1;
    transform: translateY(0);
}

/* 动画效果已禁用 */

/* =============================
   防止页面加载时的闪烁和跳动
   ============================= */

/* 关键修复：始终为滚动条预留空间，防止滚动条出现时的布局偏移 */
html {
    scrollbar-gutter: stable;
    overflow-y: scroll; /* 降级方案：强制显示滚动条槽位 */
}

/* 现代浏览器支持 scrollbar-gutter */
@supports (scrollbar-gutter: stable) {
    html {
        overflow-y: auto;
        scrollbar-gutter: stable;
    }
}

/* 页面加载时保持内容可见但稍微透明，避免突然出现的效果 */
body:not(.page-loaded) .page_content {
    opacity: 0.98;
    transform: translateY(0);
}

/* 页面加载完成后平滑过渡到完全可见 */
body.page-loaded .page_content {
    opacity: 1;
    transition: opacity 0.3s ease;
}

/* 确保表格在初始加载时就是可见的，避免GSAP动画导致的跳动 */
.content-card table {
    opacity: 1 !important;
    transform: none !important;
    will-change: auto;
}

/* 防止layout shift - 为图片容器预留空间 */
.content-image {
    min-height: 200px;
    background-color: var(--content-bg);
}

/* 减少重绘和重排 */
.wiki-sidebar,
.wiki-content-wrapper {
    contain: layout style;
}

/* 优化动画性能 */
.content-card table,
.content-card table tbody tr {
    will-change: transform, opacity;
}

@media (prefers-reduced-motion: reduce) {
    /* 如果用户偏好减少动画，完全禁用所有动画效果 */
    * {
        animation: none !important;
        transition: none !important;
    }
    
    body:not(.page-loaded) .page_content {
        opacity: 1;
    }
}



/* content-card 中的 iframe video 居中样式 */
.content-card iframe {
    display: block;
    margin: 2rem auto;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(139, 127, 168, 0.15);
    transition: all 0.3s ease;
}

.content-card iframe:hover {
    box-shadow: 0 6px 20px rgba(139, 127, 168, 0.25);
    transform: translateY(-2px);
}

/* 响应式调整 - 在小屏幕上保持合适的尺寸 */
@media (max-width: 768px) {
    .content-card iframe {
        width: 100% !important;
        max-width: 100%;
        height: auto;
        min-height: 200px;
    }
}

/* PDF 卡片样式 */
.pdf_card {
    width: 100%;
    max-width: 500px;
    margin: 20px 0;
    padding: 24px;
    border-radius: 12px;
    background: var(--content-surface);
    border: 1px solid var(--content-border);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    box-shadow: 0 2px 6px rgba(139, 127, 168, 0.08);
}

.pdf_card:hover {
    border-color: var(--content-primary);
    box-shadow: 0 4px 12px rgba(139, 127, 168, 0.18);
    transform: translateY(-2px);
}

.pdf_card_content {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 16px;
    width: 60%;
}

.pdf_card_info {
    flex: 1;
    width: 100%;
}

.pdf_card_name {
    font-size: 16px;
    font-weight: 600;
    color: #333;
    margin-bottom: 4px;
    line-height: 1.3;
    transition: color 0.3s ease;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pdf_card:hover .pdf_card_name {
    color: var(--content-primary);
}

.pdf_card_size {
    font-size: 13px;
    color: #6c757d;
    font-weight: 500;
}

/* 下载链接样式 */
.pdf_download_link {
    background: linear-gradient(135deg, var(--content-primary) 0%, var(--content-accent) 100%);
    color: white !important;
    text-decoration: none;
    border-radius: 8px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
    border: none;
    outline: none;
    white-space: nowrap;
    position: relative;
    box-shadow: 0 2px 6px rgba(139, 127, 168, 0.25);
}

.pdf_download_link:hover {
    background: linear-gradient(135deg, var(--content-primary-dark) 0%, var(--content-primary) 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(139, 127, 168, 0.35);
}

.pdf_download_link:active {
    transform: translateY(0);
}

/* 段落中的下载链接特殊样式 */
p .pdf_download_link {
    padding: 4px 8px;
    font-size: 13px;
    margin: 0 2px;
}

p .pdf_download_link:hover {
    transform: none;
    box-shadow: none;
}

/* 上标和下标样式 */
.top-symbol {
    vertical-align: super;
    font-size: 0.8em;
    line-height: 0;
}

.bottom-symbol {
    vertical-align: sub;
    font-size: 0.8em;
    line-height: 0;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .pdf_card {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
        padding: 20px;
    }

    .pdf_card_content {
        width: 100%;
        gap: 12px;
    }

    .pdf_card_name {
        font-size: 15px;
    }

    .pdf_card_size {
        font-size: 12px;
    }

    .pdf_download_link {
        align-self: stretch;
        text-align: center;
        margin-top: 8px;
    }
}

/* =============================
   平板横屏适配 (iPad Pro, iPad Air 等 4:3 或 10:9 比例)
   注意：此规则放在最后，以覆盖之前的通用响应式规则
   ============================= */
@media (min-width: 1024px) and (max-width: 1366px) and (orientation: landscape) {
    .page_content {
        gap: 1.5vw !important;
    }

    .wiki-sidebar {
        width: 20vw !important;
        padding: 16px !important;
        margin-left: -1vw !important;
    }

    .wiki-content-wrapper {
        max-width: 72vw !important;
        padding: 0 !important;
    }

    .sidebar-title {
        font-size: 0.9rem !important;
        margin-bottom: 16px !important;
    }

    .sidebar-item-level1 > .nav-link {
        padding: 10px 10px 10px 28px !important;
        font-size: 0.8rem !important;
        line-height: 1.5 !important;
    }

    .sidebar-item-level1 > .nav-link::before {
        left: 10px !important;
        top: 12px !important;
        width: 12px !important;
        height: 12px !important;
    }

    .sidebar-item-level2 > .nav-link {
        padding: 7px 10px 7px 28px !important;
        font-size: 0.75rem !important;
        line-height: 1.4 !important;
    }

    .sidebar-item-level2 > .nav-link::before {
        left: 16px !important;
        top: 7px !important;
    }

    .sidebar-item-level2 > .nav-link.active {
        padding-left: 26px !important;
    }

    .content-card {
        padding: 35px !important;
    }
}