/* 基础重置和全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 蓝色主题色彩 */
    --primary-color: #2563eb;
    --primary-light: #3b82f6;
    --primary-dark: #1d4ed8;
    --secondary-color: #1e40af;
    --accent-color: #06b6d4;
    
    /* 中性色彩 */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-accent: #f1f5f9;
    --border-color: #e5e7eb;
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    --gradient-secondary: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    
    /* 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), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* 字体 */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* 边框半径 */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* 过渡 */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    scroll-behavior: smooth;
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition-normal);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1.5rem;
}

.nav-logo a {
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
    padding: var(--spacing-xs) 0;
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 50%;
    background: var(--gradient-primary);
    transition: var(--transition-fast);
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link.active {
    color: var(--primary-color);
}

.nav-link.active::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition-fast);
}

/* 页面头部样式 */
.page-header {
    padding: calc(70px + var(--spacing-2xl)) 0 var(--spacing-2xl) 0;
    background: var(--bg-secondary);
    text-align: center;
}

.page-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.page-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* 博客列表样式 */
.blog-list {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-primary);
}

.blog-item {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-2xl);
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    border: 1px solid var(--border-color);
    position: relative;
}

.blog-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.blog-item:last-child {
    margin-bottom: 0;
}

.blog-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    height: 220px;
}

.blog-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-normal);
    background: var(--gradient-secondary);
}

.blog-item:hover .blog-image img {
    transform: scale(1.05);
}

.blog-category-badge {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    backdrop-filter: blur(10px);
}

.blog-content {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.blog-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--text-light);
}

.blog-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.blog-meta i {
    font-size: 0.8rem;
}

.blog-content h2 {
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
    transition: var(--transition-fast);
}

.blog-content h2 a {
    color: inherit;
}

.blog-item:hover .blog-content h2 {
    color: var(--primary-color);
}

.blog-excerpt {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
}

.blog-tag {
    background: var(--bg-accent);
    color: var(--primary-color);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--primary-light);
    transition: var(--transition-fast);
}

.blog-tag:hover {
    background: var(--primary-light);
    color: white;
}

.blog-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.blog-stats {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.9rem;
    color: var(--text-light);
}

.blog-stats span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.blog-stats i {
    font-size: 0.8rem;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 12px 24px;
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-normal);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--bg-primary);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
}

.btn-outline:hover {
    background: var(--text-secondary);
    color: white;
    border-color: var(--text-secondary);
}

/* 更多文章提示 */
.more-posts {
    text-align: center;
    padding: var(--spacing-2xl);
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    margin-top: var(--spacing-2xl);
}

.more-posts p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

/* 详情页面通用样式 */
.back-button {
    margin-bottom: var(--spacing-xl);
}

/* 文章详情页面样式 */
.blog-detail {
    padding: calc(70px + var(--spacing-xl)) 0 var(--spacing-2xl) 0;
    background: var(--bg-primary);
}

.article-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.article-category {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 6px 16px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.article-header h1 {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
    color: var(--text-light);
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.article-tags {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.article-tag {
    background: var(--bg-accent);
    color: var(--primary-color);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--primary-light);
}

.article-cover {
    margin-bottom: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.article-cover img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.article-content {
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.article-content h2 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-xs);
    border-bottom: 2px solid var(--primary-color);
}

.article-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
}

.article-content h4 {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    font-size: 1.2rem;
    color: var(--text-primary);
}

.article-content p {
    margin-bottom: var(--spacing-md);
}

.article-content ul,
.article-content ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.article-content li {
    margin-bottom: var(--spacing-xs);
}

.article-content pre {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--border-color);
    font-size: 0.95rem;
}

.article-content code {
    background: var(--bg-accent);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    color: var(--primary-color);
}

.article-content pre code {
    background: none;
    padding: 0;
    color: var(--text-primary);
}

.article-content blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: var(--spacing-md);
    margin: var(--spacing-md) 0;
    color: var(--text-secondary);
    font-style: italic;
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacing-md);
}

.article-content th,
.article-content td {
    border: 1px solid var(--border-color);
    padding: var(--spacing-sm);
    text-align: left;
}

.article-content th {
    background: var(--bg-secondary);
    font-weight: 600;
}

.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
}

.article-footer {
    max-width: 800px;
    margin: var(--spacing-2xl) auto 0;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
}

.article-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.article-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.nav-prev,
.nav-next {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition-normal);
}

.nav-prev:hover,
.nav-next:hover {
    background: var(--primary-color);
    color: white;
}

.nav-next {
    justify-content: flex-end;
    text-align: right;
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin: var(--spacing-xl) 0;
    flex-wrap: wrap;
}

.pagination a,
.pagination .current {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition-fast);
    border: 1px solid var(--border-color);
}

.pagination a:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination .current {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* 页脚 */
.footer {
    background: var(--text-primary);
    color: white;
    text-align: center;
    padding: var(--spacing-lg) 0;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-lg) 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .page-title {
        font-size: 2.5rem;
    }
    
    .blog-item {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        padding: var(--spacing-lg);
    }
    
    .blog-image {
        height: 180px;
    }
    
    .blog-content h2 {
        font-size: 1.4rem;
    }
    
    .blog-actions {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: stretch;
    }
    
    .blog-stats {
        justify-content: center;
        gap: var(--spacing-lg);
    }
    
    .blog-meta {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .article-header h1 {
        font-size: 2.2rem;
    }
    
    .article-meta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .article-cover img {
        height: 250px;
    }
    
    .article-navigation {
        grid-template-columns: 1fr;
    }
    
    .article-actions {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .page-title {
        font-size: 2rem;
    }
    
    .blog-content h2 {
        font-size: 1.3rem;
    }
    
    .blog-excerpt {
        -webkit-line-clamp: 4;
    }
    
    .blog-tags {
        gap: 4px;
    }
    
    .blog-tag {
        font-size: 0.75rem;
        padding: 3px 8px;
    }
    
    .more-posts {
        padding: var(--spacing-lg);
    }

    .article-header h1 {
        font-size: 1.8rem;
    }
}

/* 搜索框样式 */
.blog-search {
    margin-top: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 1rem;
    color: var(--text-secondary);
    font-size: 1.1rem;
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: 0.875rem 3rem 0.875rem 3rem;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    font-size: 1rem;
    font-family: var(--font-family);
    transition: all 0.3s ease;
    background: white;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-input::placeholder {
    color: var(--text-secondary);
}

.clear-search {
    position: absolute;
    right: 1rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.1rem;
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    border-radius: 50%;
}

.clear-search:hover {
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
}

.search-results-count {
    margin-top: var(--spacing-sm);
    text-align: center;
    font-size: 0.95rem;
    font-weight: 500;
}

/* 分页样式 */
.pagination {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg) 0;
}

.pagination-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.pagination-btn,
.pagination-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    min-width: 40px;
    height: 40px;
}

.pagination-number {
    font-size: 0.95rem;
}

.pagination-btn:hover,
.pagination-number:hover {
    border-color: var(--primary-color);
    background: var(--primary-light);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.pagination-number.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    font-weight: 600;
    cursor: default;
}

.pagination-ellipsis {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    color: var(--text-secondary);
    min-width: 40px;
}

.pagination-numbers {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.first-page,
.last-page {
    font-size: 1.1rem;
}

.prev-page i,
.next-page i {
    font-size: 0.85rem;
}

/* 项目展示列表布局 */
.projects-list {
    padding: var(--spacing-xl) 0;
}

.project-item {
    display: flex;
    gap: var(--spacing-xl);
    background: white;
    border-radius: 12px;
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.project-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

.project-image {
    flex-shrink: 0;
    width: 350px;
    height: 250px;
    border-radius: 8px;
    overflow: hidden;
    background: var(--background-light);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.project-item:hover .project-image img {
    transform: scale(1.05);
}

.project-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
}

.project-type {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--primary-light);
    color: white;
    border-radius: 20px;
    font-weight: 500;
}

.project-date {
    color: var(--text-secondary);
}

.project-content h2 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    line-height: 1.3;
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
    flex: 1;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: var(--spacing-lg);
}

.tech-tag {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    background: var(--bg-accent);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

.tech-tag:hover {
    background: var(--primary-light);
    color: white;
    border-color: var(--primary-light);
}

.project-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* 响应式项目列表 */
@media (max-width: 1024px) {
    .project-image {
        width: 300px;
        height: 220px;
    }
}

@media (max-width: 768px) {
    .project-item {
        flex-direction: column;
        padding: var(--spacing-lg);
    }
    
    .project-image {
        width: 100%;
        height: 200px;
    }
    
    .project-content h2 {
        font-size: 1.5rem;
    }
    
    .project-actions {
        flex-direction: column;
    }
    
    .project-actions .btn {
        width: 100%;
        justify-content: center;
    }
}

/* 响应式分页 */
@media (max-width: 768px) {
    .pagination-container {
        gap: 0.3rem;
    }
    
    .pagination-btn,
    .pagination-number {
        padding: 0.4rem 0.8rem;
        font-size: 0.9rem;
        min-width: 36px;
        height: 36px;
    }
    
    .prev-page,
    .next-page {
        font-size: 0.85rem;
    }
    
    .prev-page i,
    .next-page i {
        margin: 0;
    }
    
    .prev-page span,
    .next-page span {
        display: none;
    }
    
    .prev-page::before {
        content: '上一页';
    }
    
    .next-page::after {
        content: '下一页';
    }
}

@media (max-width: 480px) {
    .search-input {
        font-size: 0.9rem;
        padding: 0.75rem 2.8rem 0.75rem 2.8rem;
    }
    
    .search-icon,
    .clear-search {
        font-size: 1rem;
    }
    
    .pagination-btn,
    .pagination-number {
        padding: 0.3rem 0.6rem;
        font-size: 0.85rem;
        min-width: 32px;
        height: 32px;
    }
}

/* 文章目录样式 */
.article-toc {
    position: fixed;
    right: 8rem;
    bottom: 6rem;
    width: 260px;
    max-height: 600px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    z-index: 100;
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.toc-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--gradient-primary);
    color: white;
    font-weight: 600;
    font-size: 0.95rem;
    flex-shrink: 0;
}

.toc-header i {
    font-size: 1rem;
}

.toc-content {
    padding: 1rem;
    overflow-y: auto;
    overflow-x: hidden;
    flex: 1;
    min-height: 0;
}

.toc-content::-webkit-scrollbar {
    width: 6px;
}

.toc-content::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 3px;
    transition: var(--transition-fast);
}

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

.toc-content::-webkit-scrollbar-track {
    background: var(--bg-accent);
    border-radius: 3px;
}

/* Firefox 滚动条样式 */
.toc-content {
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) var(--bg-accent);
}

.toc-item {
    margin-bottom: 0.25rem;
}

.toc-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.4;
    text-decoration: none;
    transition: var(--transition-fast);
    border-left: 2px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.toc-link:hover {
    color: var(--primary-color);
    border-left-color: var(--primary-light);
    background: var(--bg-secondary);
}

.toc-link.active {
    color: var(--primary-color);
    font-weight: 600;
    border-left-color: var(--primary-color);
    background: var(--bg-accent);
}

/* 展开/折叠图标 */
.toc-toggle {
    font-size: 0.75rem;
    transition: transform var(--transition-fast);
    color: var(--text-light);
    min-width: 12px;
}

.toc-toggle.expanded {
    transform: rotate(90deg);
}

.toc-link.no-children .toc-toggle {
    opacity: 0;
    pointer-events: none;
}

/* 子标题容器 */
.toc-children {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    padding-left: 1rem;
}

.toc-children.expanded {
    max-height: 1000px;
}

.toc-children .toc-link {
    font-size: 0.825rem;
    padding: 0.4rem 0.75rem;
}

.toc-children .toc-children .toc-link {
    font-size: 0.8rem;
    padding: 0.35rem 0.75rem;
    padding-left: 1.5rem;
}

/* 响应式：在小屏幕上隐藏目录 */
@media (max-width: 1400px) {
    .article-toc {
        display: none;
    }
}

/* 调整文章内容宽度，为目录留出空间 */
@media (min-width: 1400px) {
    .blog-detail .container {
        max-width: 900px;
        margin-left: auto;
        margin-right: auto;
    }
}

/* 针对较小的屏幕高度调整目录最大高度 */
@media (max-height: 800px) {
    .article-toc {
        max-height: 450px;
        bottom: 4rem;
    }
}

@media (max-height: 600px) {
    .article-toc {
        max-height: 350px;
        bottom: 3rem;
    }
}