/**
 * Modern Light Theme - Help Center
 * Version: 2.0.0
 * 参考 GemgenAI 帮助中心设计
 */

/* ========================================
   CSS Variables
   ======================================== */
:root {
    --color-primary: #18181B;
    --color-primary-hover: #27272A;
    --color-primary-light: rgba(24, 24, 27, 0.08);
    --color-accent: #10B981;
    --color-accent-hover: #059669;
    --color-accent-light: rgba(16, 185, 129, 0.1);
    --color-danger: #DC2626;
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-info: #3B82F6;
    --color-bg: #FFFFFF;
    --color-bg-secondary: #FAFAFA;
    --color-border: #E5E5E5;
    --color-text: #0A0A0A;
    --color-text-secondary: #525252;
    --color-text-muted: #A3A3A3;
    --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Helvetica Neue', sans-serif;
    --font-logo: 'Outfit', sans-serif;
    --font-code: 'SF Mono', 'Fira Code', Consolas, monospace;
    --header-height: 64px;
    --sidebar-width: 260px;
    --toc-width: 220px;
    --code-bg: #1E1E1E;
}

/* 深色模式 */
[data-theme="dark"] {
    --color-primary: #FFFFFF;
    --color-primary-hover: #E5E5E5;
    --color-primary-light: rgba(255, 255, 255, 0.08);
    --color-accent: #34D399;
    --color-accent-hover: #10B981;
    --color-accent-light: rgba(52, 211, 153, 0.15);
    --color-bg: #0A0A0A;
    --color-bg-secondary: #171717;
    --color-bg-tertiary: #1F1F1F;
    --color-border: #2D2D2D;
    --color-border-hover: #404040;
    --color-text: #FAFAFA;
    --color-text-secondary: #D4D4D4;
    --color-text-muted: #737373;
    --code-bg: #1E1E1E;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.6);
}

/* 深色模式下文章内容样式 */
[data-theme="dark"] .article-body,
[data-theme="dark"] .article-body.prose {
    color: var(--color-text);
}

[data-theme="dark"] .article-body p,
[data-theme="dark"] .article-content p {
    color: var(--color-text-secondary);
}

[data-theme="dark"] .article-body h2,
[data-theme="dark"] .article-body h3,
[data-theme="dark"] .article-body h4,
[data-theme="dark"] .article-content h2,
[data-theme="dark"] .article-content h3,
[data-theme="dark"] .article-content h4 {
    color: var(--color-text);
}

[data-theme="dark"] .article-body ul,
[data-theme="dark"] .article-body ol,
[data-theme="dark"] .article-content ul,
[data-theme="dark"] .article-content ol {
    color: var(--color-text-secondary);
}

[data-theme="dark"] .article-body code,
[data-theme="dark"] .article-content code {
    background: var(--color-bg-secondary);
    border-color: var(--color-border);
    color: #E5E5E5;
}

[data-theme="dark"] .article-body pre,
[data-theme="dark"] .article-content pre {
    background: var(--code-bg);
    border: 1px solid var(--color-border);
}

[data-theme="dark"] .article-body pre code,
[data-theme="dark"] .article-content pre code {
    color: #E5E5E5;
}

[data-theme="dark"] .article-body blockquote,
[data-theme="dark"] .article-content blockquote {
    background: var(--color-bg-secondary);
    border-left-color: var(--color-accent);
    color: var(--color-text-secondary);
}

[data-theme="dark"] .article-body th,
[data-theme="dark"] .article-content th {
    background: var(--color-bg-secondary);
    color: var(--color-text);
}

[data-theme="dark"] .article-body td,
[data-theme="dark"] .article-content td {
    color: var(--color-text-secondary);
}

/* 深色模式下表格行悬停 */
[data-theme="dark"] .article-body tbody tr:nth-child(even),
[data-theme="dark"] .article-content tbody tr:nth-child(even) {
    background: var(--color-bg);
}

[data-theme="dark"] .article-body tbody tr:nth-child(odd),
[data-theme="dark"] .article-content tbody tr:nth-child(odd) {
    background: var(--color-bg-secondary);
}

/* 深色模式下图片边框 */
[data-theme="dark"] .article-body img,
[data-theme="dark"] .article-content img {
    border-color: var(--color-border);
}

/* 深色模式分割线 */
[data-theme="dark"] .article-body hr,
[data-theme="dark"] .article-content hr {
    border-top-color: var(--color-border);
}

/* 深色模式分类头部 */
[data-theme="dark"] .category-header {
    border-bottom-color: var(--color-border);
}

[data-theme="dark"] .category-header-icon {
    background: var(--color-accent-light);
}

/* ========================================
   Reset & Base
   ======================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    line-height: 1.6;
}

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

img {
    max-width: 100%;
    height: auto;
}

/* ========================================
   顶部导航
   ======================================== */
.top-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding: 0 48px;
    z-index: 100;
}

[data-theme="dark"] .top-header {
    background: rgba(10, 10, 10, 0.9);
}

.header-left {
    display: flex;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: opacity 0.2s;
}

.logo:hover {
    opacity: 0.8;
}

.logo-text {
    font-family: var(--font-logo);
    font-size: 22px;
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.03em;
}

.logo-img {
    height: 36px;
    width: auto;
    max-width: 180px;
    object-fit: contain;
    margin-right: 10px;
}

.logo-accent {
    color: var(--color-accent);
}

.header-center {
    display: flex;
    justify-content: center;
}

.header-search {
    width: 100%;
    max-width: 480px;
    min-width: 320px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
}

.header-search:hover {
    border-color: #D4D4D4;
    background: var(--color-bg);
}

[data-theme="dark"] .header-search {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--color-border);
}

[data-theme="dark"] .header-search:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-border-hover);
}

.header-search svg {
    width: 18px;
    height: 18px;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.header-search span {
    flex: 1;
    font-size: 14px;
    color: var(--color-text-muted);
}

.header-search kbd {
    padding: 3px 8px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 5px;
    font-size: 12px;
    font-family: var(--font-body);
    color: var(--color-text-muted);
}

.header-right {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
}

.theme-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.theme-toggle:hover {
    background: var(--color-bg-secondary);
    border-color: #D4D4D4;
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

[data-theme="dark"] .theme-toggle {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--color-border);
}

[data-theme="dark"] .theme-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-border-hover);
}

/* ========================================
   Hero 区域
   ======================================== */
.hero {
    padding: 160px 48px 100px;
    background: linear-gradient(180deg, var(--color-primary) 0%, #27272A 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

[data-theme="dark"] .hero {
    background: linear-gradient(180deg, #171717 0%, #0A0A0A 100%);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% 0%, rgba(16, 185, 129, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 80% 20%, rgba(16, 185, 129, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 720px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.25);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-accent);
    margin-bottom: 28px;
}

.hero-badge-dot {
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero h1 {
    font-family: var(--font-logo);
    font-size: 52px;
    font-weight: 800;
    color: #FFFFFF;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.hero-desc {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
    margin-bottom: 44px;
}

/* Hero 搜索框 */
.search-container {
    max-width: 580px;
    margin: 0 auto;
}

.search-box-hero {
    display: flex;
    align-items: center;
    gap: 12px;
    background: #FFFFFF;
    border-radius: 14px;
    padding: 16px 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: all 0.2s;
}

.search-box-hero:hover {
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
    transform: translateY(-2px);
}

/* 深色模式搜索框 */
[data-theme="dark"] .search-box-hero {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .search-box-hero:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.18);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .search-icon-hero {
    color: rgba(255, 255, 255, 0.5);
}

[data-theme="dark"] .search-placeholder {
    color: rgba(255, 255, 255, 0.5);
}

[data-theme="dark"] .search-kbd {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.6);
}

.search-icon-hero {
    color: var(--color-text-muted);
}

.search-placeholder {
    flex: 1;
    font-size: 16px;
    color: var(--color-text-muted);
    text-align: left;
}

.search-kbd {
    padding: 6px 12px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 13px;
    font-family: var(--font-body);
    color: var(--color-text-muted);
}

.search-hints {
    margin-top: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.search-hint-label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}

.search-hint-tag {
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    cursor: pointer;
    transition: all 0.2s;
}

.search-hint-tag:hover {
    background: rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.9);
    border-color: rgba(255, 255, 255, 0.2);
}

/* ========================================
   分类卡片区域
   ======================================== */
.cards-section {
    padding: 80px 48px 100px;
    max-width: 1200px;
    margin: 0 auto;
}

.cards-header {
    text-align: center;
    margin-bottom: 56px;
}

.cards-header h2 {
    font-family: var(--font-logo);
    font-size: 32px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.cards-header p {
    font-size: 16px;
    color: var(--color-text-secondary);
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.help-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 32px 28px;
    text-decoration: none;
    transition: all 0.25s ease;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.help-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: transparent;
    transition: background 0.25s;
}

.help-card:hover {
    border-color: #D4D4D4;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
    transform: translateY(-6px);
}

.help-card:hover::before {
    background: var(--color-accent);
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    font-size: 24px;
}

.card-icon svg {
    width: 24px;
    height: 24px;
}

.card-emoji {
    font-size: 24px;
    line-height: 1;
}

.help-card:hover .card-icon {
    background: var(--color-accent-light);
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
}

.card-desc {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 24px;
    flex: 1;
}

.card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

.card-count {
    font-size: 13px;
    color: var(--color-text-muted);
}

.card-arrow {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    transition: all 0.25s;
}

.help-card:hover .card-arrow {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #FFFFFF;
}

/* 深色模式分类卡片 */
[data-theme="dark"] .help-card {
    background: var(--color-bg-secondary);
    border-color: var(--color-border);
}

[data-theme="dark"] .help-card:hover {
    border-color: var(--color-border-hover);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .card-icon {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--color-border);
}

[data-theme="dark"] .help-card:hover .card-icon {
    background: var(--color-accent-light);
}

[data-theme="dark"] .card-meta {
    border-top-color: var(--color-border);
}

[data-theme="dark"] .card-arrow {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--color-border);
}

/* ========================================
   热门问题
   ======================================== */
.popular-section {
    padding: 0 48px 100px;
    max-width: 1200px;
    margin: 0 auto;
}

.popular-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 36px;
}

.popular-header h2 {
    font-family: var(--font-logo);
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.view-all {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: color 0.2s;
}

.view-all:hover {
    color: var(--color-accent);
}

.popular-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.popular-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 14px;
    text-decoration: none;
    transition: all 0.2s;
}

.popular-item:hover {
    border-color: #D4D4D4;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
}

.popular-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--color-bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.popular-content {
    flex: 1;
    min-width: 0;
}

.popular-title {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.popular-category {
    font-size: 13px;
    color: var(--color-text-muted);
}

.popular-arrow {
    color: var(--color-text-muted);
    transition: all 0.2s;
    flex-shrink: 0;
}

.popular-item:hover .popular-arrow {
    color: var(--color-accent);
    transform: translateX(4px);
}

/* 深色模式热门问题 */
[data-theme="dark"] .popular-item {
    background: var(--color-bg-secondary);
    border-color: var(--color-border);
}

[data-theme="dark"] .popular-item:hover {
    border-color: var(--color-border-hover);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .popular-icon {
    background: rgba(255, 255, 255, 0.06);
}

/* ========================================
   联系支持
   ======================================== */
.contact-section {
    padding: 80px 48px;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
}

.contact-container {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-section h2 {
    font-family: var(--font-logo);
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.contact-section p {
    font-size: 16px;
    color: var(--color-text-secondary);
    margin-bottom: 36px;
}

.contact-options {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    font-family: var(--font-body);
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

.contact-btn-primary {
    background: var(--color-primary);
    color: #FFFFFF;
}

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

[data-theme="dark"] .contact-btn-primary {
    background: #FFFFFF;
    color: #0A0A0A;
}

[data-theme="dark"] .contact-btn-primary:hover {
    background: #E5E5E5;
}

.contact-btn-outline {
    background: var(--color-bg);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.contact-btn-outline:hover {
    border-color: #D4D4D4;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

[data-theme="dark"] .contact-section {
    background: var(--color-bg-secondary);
    border-top-color: var(--color-border);
}

[data-theme="dark"] .contact-btn-outline {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--color-border);
}

[data-theme="dark"] .contact-btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-border-hover);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* ========================================
   页脚
   ======================================== */
.footer {
    padding: 32px 48px;
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-copyright {
    font-size: 14px;
    color: var(--color-text-muted);
}

.footer-links {
    display: flex;
    gap: 28px;
}

.footer-links a {
    font-size: 14px;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--color-text);
}

/* 深色模式页脚 */
[data-theme="dark"] .footer {
    background: var(--color-bg);
    border-top-color: var(--color-border);
}

/* 深色模式面包屑 */
[data-theme="dark"] .breadcrumb-separator {
    color: var(--color-text-muted);
}

/* 深色模式相关文章 */
[data-theme="dark"] .related-articles {
    border-top-color: var(--color-border);
}

[data-theme="dark"] .related-link {
    border-bottom-color: var(--color-border);
}

/* 深色模式 TOC */
[data-theme="dark"] .toc-feedback {
    border-top-color: var(--color-border);
}

/* 深色模式空状态 */
[data-theme="dark"] .empty-state {
    color: var(--color-text-muted);
}

[data-theme="dark"] .empty-state h3 {
    color: var(--color-text-secondary);
}

/* ========================================
   搜索模态框
   ======================================== */
.search-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: none;
    align-items: flex-start;
    justify-content: center;
    padding-top: 10vh;
}

.search-modal-overlay.active {
    display: flex;
}

.search-modal {
    width: 100%;
    max-width: 640px;
    background: var(--color-bg);
    border-radius: 16px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    overflow: hidden;
    animation: modalSlideIn 0.2s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.search-modal-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--color-border);
}

.search-modal-header svg {
    width: 20px;
    height: 20px;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.search-modal-input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 16px;
    font-family: var(--font-body);
    color: var(--color-text);
    background: transparent;
}

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

.search-modal-close {
    padding: 4px 8px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 12px;
    font-family: var(--font-body);
    color: var(--color-text-muted);
    cursor: pointer;
}

.search-modal-body {
    max-height: 400px;
    overflow-y: auto;
}

.search-section-title {
    padding: 12px 20px 8px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-muted);
}

.search-results {
    list-style: none;
}

.search-result-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    cursor: pointer;
    transition: background 0.15s;
}

.search-result-item:hover,
.search-result-item.selected {
    background: var(--color-bg-secondary);
}

.search-result-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: var(--color-bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.search-result-item:hover .search-result-icon,
.search-result-item.selected .search-result-icon {
    background: var(--color-accent-light);
    color: var(--color-accent);
}

.search-result-content {
    flex: 1;
    min-width: 0;
}

.search-result-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 2px;
}

.search-result-desc {
    font-size: 13px;
    color: var(--color-text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-modal-footer {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 20px;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
}

.search-shortcut {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--color-text-muted);
}

.search-shortcut kbd {
    padding: 2px 6px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: 11px;
    font-family: var(--font-body);
}

/* 深色模式搜索模态框 */
[data-theme="dark"] .search-modal-overlay {
    background: rgba(0, 0, 0, 0.7);
}

[data-theme="dark"] .search-modal {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] .search-modal-header {
    border-bottom-color: var(--color-border);
}

[data-theme="dark"] .search-modal-close {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-border);
}

[data-theme="dark"] .search-result-item:hover,
[data-theme="dark"] .search-result-item.selected {
    background: rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .search-result-icon {
    background: rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .search-modal-footer {
    background: var(--color-bg);
    border-top-color: var(--color-border);
}

[data-theme="dark"] .search-shortcut kbd {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-border);
}

/* ========================================
   文章详情页布局
   ======================================== */
.main-layout,
.article-layout {
    display: flex;
    padding-top: var(--header-height);
    min-height: 100vh;
}

.main-wrapper {
    padding-top: var(--header-height);
}

.page-article .main-wrapper {
    padding-top: 0;
}

.article-layout {
    padding-top: 0;
    margin-top: var(--header-height);
}

/* 侧边栏 */
.sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    background: var(--color-bg);
    position: fixed;
    top: var(--header-height);
    left: 0;
    bottom: 0;
    overflow-y: auto;
    padding: 20px 0;
    border-right: 1px solid var(--color-border);
}

.sidebar::-webkit-scrollbar {
    width: 4px;
}

.sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 2px;
}

.sidebar-section {
    margin-bottom: 8px;
}

.sidebar-title {
    padding: 16px 20px 8px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-muted);
}

.sidebar-nav {
    list-style: none;
}

.sidebar-item {
    position: relative;
}

.sidebar-link {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 7px 20px;
    font-size: 14px;
    line-height: 1.4;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: all 0.15s;
    cursor: pointer;
}

.sidebar-link:hover {
    color: var(--color-text);
    background: var(--color-bg-secondary);
}

.sidebar-link.active {
    color: var(--color-accent);
    background: var(--color-accent-light);
    font-weight: 500;
}

.sidebar-link svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    margin-top: 2px;
    opacity: 0.5;
}

.sidebar-link:hover svg {
    opacity: 0.8;
}

.sidebar-link.active svg {
    opacity: 1;
}

/* 深色模式侧边栏 */
[data-theme="dark"] .sidebar {
    background: var(--color-bg);
    border-right-color: var(--color-border);
}

[data-theme="dark"] .sidebar-link:hover {
    background: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .sidebar-group-link:hover {
    background: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .sidebar-count {
    background: rgba(255, 255, 255, 0.1);
}

.sidebar-group-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 7px 20px;
    font-size: 14px;
    line-height: 1.4;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: all 0.15s;
    cursor: pointer;
    font-weight: 500;
}

.sidebar-group-link:hover {
    color: var(--color-text);
    background: var(--color-bg-secondary);
}

.sidebar-group-link.active {
    color: var(--color-accent);
    background: var(--color-accent-light);
}

.sidebar-icon {
    flex-shrink: 0;
    opacity: 0.6;
}

.sidebar-text {
    flex: 1;
    min-width: 0;
}

.sidebar-count {
    margin-left: auto;
    padding: 2px 8px;
    background: var(--color-border);
    border-radius: 10px;
    font-size: 11px;
    color: var(--color-text-muted);
    font-weight: 500;
}

.sidebar-list {
    list-style: none;
    padding-left: 0;
}

.sidebar-list .sidebar-link {
    padding-left: 46px;
    font-size: 13px;
    font-weight: 400;
}

/* 内容区域 */
.content-wrapper,
.article-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-width: 0;
    padding: 40px 48px 80px;
}

/* 当有 TOC 时为右侧预留空间 */
.has-toc .article-main {
    margin-right: var(--toc-width);
    max-width: calc(100% - var(--sidebar-width) - var(--toc-width));
}

/* 无 TOC 时内容区域居中 */
.no-toc .article-main {
    margin-right: 0;
    max-width: calc(100% - var(--sidebar-width));
}

/* 文章内容居中 */
.article-content {
    max-width: 760px;
    margin: 0 auto;
}

.content {
    max-width: 760px;
    margin: 0 auto;
}

/* 面包屑 */
.breadcrumb {
    margin-bottom: 24px;
    font-size: 13px;
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 4px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

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

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb-separator {
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.breadcrumb-current {
    color: var(--color-text-secondary);
}

/* 文章头部 */
.article-header {
    margin-bottom: 32px;
}

.article-title {
    font-family: var(--font-logo);
    font-size: 32px;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.25;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 14px;
    color: var(--color-text-muted);
}

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

.article-meta-item svg {
    width: 16px;
    height: 16px;
}

/* 文章内容 */
.article-content {
    max-width: 760px;
}

.article-body,
.article-body.prose {
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-text);
}

.article-body > p:first-child {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 32px;
}

.article-body h2,
.article-content h2 {
    font-family: var(--font-logo);
    font-size: 22px;
    font-weight: 700;
    color: var(--color-text);
    margin: 48px 0 16px;
    padding-top: 24px;
    letter-spacing: -0.01em;
    scroll-margin-top: 100px;
}

.article-body h2:first-of-type,
.article-content h2:first-of-type {
    margin-top: 0;
    padding-top: 0;
}

.article-body h3,
.article-content h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--color-text);
    margin: 32px 0 12px;
    scroll-margin-top: 100px;
}

.article-body p,
.article-content p {
    margin-bottom: 16px;
    color: var(--color-text-secondary);
}

.article-body a,
.article-content a {
    color: var(--color-accent);
    text-decoration: none;
}

.article-body a:hover,
.article-content a:hover {
    text-decoration: underline;
}

.article-body ul,
.article-body ol,
.article-content ul,
.article-content ol {
    margin-bottom: 16px;
    padding-left: 20px;
    color: var(--color-text-secondary);
}

.article-body li,
.article-content li {
    margin-bottom: 8px;
    padding-left: 4px;
}

.article-body img,
.article-content img {
    max-width: 100%;
    border-radius: 8px;
    margin: 20px 0;
    border: 1px solid var(--color-border);
}

.article-body code,
.article-content code {
    padding: 2px 6px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-family: var(--font-code);
    font-size: 13px;
    color: var(--color-text);
}

.article-body pre,
.article-content pre {
    background: var(--code-bg);
    border-radius: 8px;
    padding: 16px;
    margin: 20px 0;
    overflow-x: auto;
}

.article-body pre code,
.article-content pre code {
    padding: 0;
    background: transparent;
    border: none;
    font-size: 13px;
    color: #D4D4D4;
}

.article-body blockquote,
.article-content blockquote {
    margin: 20px 0;
    padding: 16px 20px;
    border-left: 4px solid var(--color-accent);
    background: var(--color-bg-secondary);
    border-radius: 0 8px 8px 0;
    color: var(--color-text-secondary);
    font-style: italic;
}

.article-body blockquote p,
.article-content blockquote p {
    margin-bottom: 0;
}

.article-body blockquote p:not(:last-child),
.article-content blockquote p:not(:last-child) {
    margin-bottom: 8px;
}

.article-body hr,
.article-content hr {
    margin: 32px 0;
    border: none;
    border-top: 1px solid var(--color-border);
}

/* 表格容器 - 支持横向滚动 */
.article-body .table-wrapper,
.article-content .table-wrapper {
    width: 100%;
    overflow-x: auto;
    margin: 20px 0;
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

.article-body table,
.article-content table {
    width: 100%;
    margin: 20px 0;
    border-collapse: collapse;
    font-size: 14px;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--color-border);
}

/* 当表格在 wrapper 内时，去掉外层 margin 和 border */
.article-body .table-wrapper table,
.article-content .table-wrapper table {
    margin: 0;
    border: none;
    border-radius: 0;
}

.article-body thead,
.article-content thead {
    background: var(--color-bg-secondary);
}

.article-body th,
.article-content th,
.article-body td,
.article-content td {
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    text-align: left;
    white-space: nowrap;
}

/* 第一列和内容列允许换行 */
.article-body td:first-child,
.article-content td:first-child,
.article-body td:last-child,
.article-content td:last-child {
    white-space: normal;
    min-width: 100px;
}

.article-body th,
.article-content th {
    background: var(--color-bg-secondary);
    font-weight: 600;
    color: var(--color-text);
    white-space: nowrap;
}

.article-body tbody tr,
.article-content tbody tr {
    transition: background-color 0.15s ease;
}

.article-body tbody tr:nth-child(even),
.article-content tbody tr:nth-child(even) {
    background: var(--color-bg);
}

.article-body tbody tr:nth-child(odd),
.article-content tbody tr:nth-child(odd) {
    background: var(--color-bg-secondary);
}

.article-body tr:hover,
.article-content tr:hover {
    background: var(--color-accent-light) !important;
}

/* 文章导航样式 */
.article-nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    padding: 16px 20px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.2s;
}

.article-nav-link:hover {
    border-color: #D4D4D4;
    background: var(--color-bg-secondary);
}

.article-nav-link.prev {
    margin-right: 8px;
}

.article-nav-link.next {
    margin-left: 8px;
    text-align: right;
    justify-content: flex-end;
}

.article-nav-link.disabled {
    visibility: hidden;
}

.article-nav-content {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.article-nav-label {
    font-size: 12px;
    color: var(--color-text-muted);
}

.article-nav-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
}

.article-nav-link:hover .article-nav-title {
    color: var(--color-accent);
}

.article-nav-link svg {
    color: var(--color-text-muted);
    flex-shrink: 0;
}

/* 文章分类和元信息 */
.article-category {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    background: var(--color-accent-light);
    border-radius: 6px;
    font-size: 13px;
    color: var(--color-accent);
    text-decoration: none;
    transition: all 0.2s;
}

.article-category:hover {
    background: var(--color-accent);
    color: #FFFFFF;
}

.article-date,
.article-views {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--color-text-muted);
}

/* 相关文章 */
.related-articles {
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
}

.related-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 20px;
}

.related-list {
    list-style: none;
}

.related-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
    text-decoration: none;
    transition: all 0.2s;
}

.related-link:hover {
    color: var(--color-accent);
}

.related-link:hover svg {
    transform: translateX(4px);
}

.related-link svg {
    color: var(--color-text-muted);
    transition: transform 0.2s;
}

.related-link-title {
    font-size: 15px;
}

/* 右侧目录 */
.toc {
    width: var(--toc-width);
    position: fixed;
    top: var(--header-height);
    right: 0;
    bottom: 0;
    padding: 32px 20px;
    overflow-y: auto;
}

.toc-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-bottom: 16px;
    padding-left: 12px;
}

.toc-nav {
    list-style: none;
}

.toc-link {
    display: block;
    padding: 6px 12px;
    font-size: 13px;
    color: var(--color-text-muted);
    text-decoration: none;
    border-left: 2px solid transparent;
    transition: all 0.15s;
    line-height: 1.4;
}

.toc-link:hover {
    color: var(--color-text-secondary);
}

.toc-link.active {
    color: var(--color-accent);
    border-left-color: var(--color-accent);
    font-weight: 500;
}

/* 反馈区 */
.toc-feedback {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
}

.toc-feedback-title {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 12px;
    padding-left: 12px;
}

.toc-feedback-buttons {
    display: flex;
    gap: 8px;
    padding-left: 12px;
}

.feedback-emoji {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.2s;
}

.feedback-emoji:hover {
    border-color: var(--color-accent);
    background: var(--color-accent-light);
    transform: scale(1.1);
}

.feedback-emoji.selected {
    border-color: var(--color-accent);
    background: var(--color-accent-light);
}

/* 深色模式反馈按钮 */
[data-theme="dark"] .feedback-emoji {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--color-border);
}

[data-theme="dark"] .feedback-emoji:hover {
    background: var(--color-accent-light);
}

/* 文章导航 */
.article-nav {
    display: flex;
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
}

.article-nav-item {
    flex: 1;
    padding: 16px 20px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    text-decoration: none;
    transition: all 0.2s;
}

.article-nav-item.prev {
    border-radius: 8px 0 0 8px;
    border-right: none;
}

.article-nav-item.next {
    border-radius: 0 8px 8px 0;
    text-align: right;
}

.article-nav-item:hover {
    background: var(--color-bg-secondary);
}

.article-nav-label {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.article-nav-item.next .article-nav-label {
    justify-content: flex-end;
}

.article-nav-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
}

.article-nav-item:hover .article-nav-title {
    color: var(--color-accent);
}

/* 深色模式文章导航 */
[data-theme="dark"] .article-nav-item {
    background: var(--color-bg-secondary);
    border-color: var(--color-border);
}

[data-theme="dark"] .article-nav-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-border-hover);
}

[data-theme="dark"] .article-nav-link {
    background: var(--color-bg-secondary);
    border-color: var(--color-border);
}

[data-theme="dark"] .article-nav-link:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-border-hover);
}

/* 文章页脚 */
.article-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
}

.article-updated {
    font-size: 13px;
    color: var(--color-text-muted);
}

.theme-switcher {
    display: flex;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    background: var(--color-bg-secondary);
}

.theme-btn {
    width: 40px;
    height: 36px;
    border: none;
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all 0.2s;
    border-right: 1px solid var(--color-border);
}

.theme-btn:last-child {
    border-right: none;
}

.theme-btn:hover {
    color: var(--color-text);
    background: var(--color-bg);
}

.theme-btn.active {
    color: var(--color-accent);
    background: var(--color-bg);
}

.theme-btn svg {
    width: 18px;
    height: 18px;
}

/* 深色模式主题切换器 */
[data-theme="dark"] .theme-switcher {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--color-border);
}

[data-theme="dark"] .theme-btn {
    border-right-color: var(--color-border);
}

[data-theme="dark"] .theme-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .theme-btn.active {
    background: rgba(255, 255, 255, 0.1);
}

/* ========================================
   分类和列表页面
   ======================================== */
.list-layout {
    display: flex;
    padding-top: var(--header-height);
    min-height: 100vh;
}

.list-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 40px 48px;
}

.category-header {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 40px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--color-border);
}

.category-header-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: var(--color-accent-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    flex-shrink: 0;
}

.category-header-content {
    flex: 1;
}

.category-header-title {
    font-family: var(--font-logo);
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 8px;
}

.category-header-description {
    font-size: 16px;
    color: var(--color-text-secondary);
    margin-bottom: 12px;
}

.category-header-count {
    font-size: 14px;
    color: var(--color-text-muted);
}

.article-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.article-list-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.2s;
}

.article-list-item:hover {
    border-color: #D4D4D4;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.article-list-content {
    flex: 1;
    min-width: 0;
}

.article-list-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
}

.article-list-summary {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
    line-height: 1.5;
}

.article-list-meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--color-text-muted);
}

.article-list-arrow {
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.article-list-item:hover .article-list-arrow {
    color: var(--color-accent);
}

/* 深色模式文章列表 */
[data-theme="dark"] .article-list-item {
    background: var(--color-bg-secondary);
    border-color: var(--color-border);
}

[data-theme="dark"] .article-list-item:hover {
    border-color: var(--color-border-hover);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--color-text-muted);
}

.empty-state svg {
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 14px;
}

/* ========================================
   响应式适配
   ======================================== */
@media (max-width: 1200px) {
    .toc {
        display: none;
    }

    .content-wrapper {
        margin-right: 0;
    }

    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    .sidebar {
        display: none;
    }

    .content-wrapper,
    .list-main {
        margin-left: 0;
    }

    .top-header {
        padding: 0 24px;
        grid-template-columns: 1fr 1fr;
    }

    .header-center {
        display: none;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 140px 24px 80px;
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero-desc {
        font-size: 16px;
    }

    .cards-section {
        padding: 60px 24px 80px;
    }

    .cards-grid {
        grid-template-columns: 1fr;
    }

    .popular-section {
        padding: 0 24px 80px;
    }

    .popular-grid {
        grid-template-columns: 1fr;
    }

    .contact-section {
        padding: 60px 24px;
    }

    .contact-options {
        flex-direction: column;
    }

    .contact-btn {
        width: 100%;
        justify-content: center;
    }

    .footer {
        padding: 24px;
    }

    .footer-content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@media (max-width: 600px) {
    .header-search {
        display: none;
    }

    .article-title {
        font-size: 26px;
    }

    .article-nav {
        flex-direction: column;
        gap: 8px;
    }

    .article-nav-item.prev,
    .article-nav-item.next {
        border-radius: 8px;
        border: 1px solid var(--color-border);
    }

    .content {
        padding: 32px 24px 60px;
    }

    .list-main {
        padding: 32px 24px;
    }
}