/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1E50A1;
    --primary-light: #5E67AA;
    --primary-dark: #1E50A1;
    --secondary-color: #64748b;
    --accent-color: #f0f9ff;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --background-light: #ffffff;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --transition-base: all 0.3s ease;
    --Essentials: #E9C4CB;
    --Essentials-dark: #C0A3C0;
    --Lifestyle: #C0A3C0;
    --Lifestyle-dark: #9284B4;
    --worknjob: #9284B4;
    --worknjob-dark: #5E67AA;
    --Business: #5E67AA;
    --Business-dark: #1E50A1;
    --Learning: #1E50A1;
    --Learning-dark: #3a2384;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: #f8fafc;
}


/* 左侧导航栏样式 */
.sidebar {
    width: 280px;
    height: 100vh;
    background-color: var(--background-light);
    padding: 24px;
    position: fixed;
    left: 0;
    top: 0;
    border-right: 1px solid rgba(0,0,0,0.05);
    overflow-y: auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: #2D2A4A;
    font-weight: bold;
    font-size: 24px;
}

.logo img {
    width: 40px;
    height: 40px;
    transition: transform 0.3s ease;
}

.logo:hover img {
    transform: scale(1.1);
}

.logo-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 1.5rem;
}

.logo-subtitle {
    margin-top: 10px;
    text-align: left;
    width: 100%;
}

.logo-subtitle .main-subtitle {
    font-size: 14px;
    color: #666;
    display: block;
    text-align: left;
    margin-left: 0;
    padding-left: 0;
}

.logo-subtitle .sub-subtitle {
    font-size: 0.9rem;
    color: #666;
}

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

.nav-item {
    margin-bottom: 8px;
}

.nav-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 15px;
    padding: 12px 16px;
    border-radius: 12px;
    transition: var(--transition-base);
}

.nav-link:hover, .nav-item.active .nav-link {
    background-color: var(--accent-color);
    color: var(--primary-color);
}

.link-content {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
}

.link-content i:not(.arrow) {
    font-size: 20px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background-color: var(--accent-color);
    color: var(--primary-color);
    transition: var(--transition-base);
}

.nav-item.active .nav-link .link-content i:not(.arrow),
.nav-link:hover .link-content i:not(.arrow) {
    background-color: var(--primary-color);
    color: white;
    transform: scale(1.1);
}

/* 导航链接中的箭头图标 */
.arrow {
    margin-left: auto;
    font-size: 12px;
    transition: var(--transition-base);
    opacity: 0.5;
}

/* 子菜单样式 */
.submenu {
    list-style: none;
    margin-left: 24px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.nav-item.active .submenu {
    max-height: 500px;
    transition: max-height 0.3s ease-in;
}

.nav-item.active .nav-link .arrow {
    transform: rotate(180deg);
    opacity: 1;
}

.submenu-item {
    margin: 4px 0;
}

.submenu-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    border-radius: 8px;
    transition: var(--transition-base);
}

.submenu-link i {
    font-size: 16px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    background-color: var(--accent-color);
    color: var(--primary-color);
    transition: var(--transition-base);
}

.submenu-link:hover {
    background-color: var(--accent-color);
    color: var(--primary-color);
}

.submenu-link:hover i {
    background-color: var(--primary-color);
    color: white;
    transform: scale(1.1);
}

/* 主要内容区域 */
.main-content {
    margin-left: 280px;
    padding: 40px;
    width: calc(100% - 280px);
    max-width: 1600px;
}

/* 卡片网格布局 */
.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    padding: 24px;
}

/* 卡片样式 */
.category-card {
    background: var(--background-light);
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    border: 1px solid rgba(0,0,0,0.05);
}

.category-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px -4px rgba(0,0,0,0.1);
}

.category-card h2 {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
}

/* 卡片图标颜色 */
.category-card h2 i.fa-passport {
    color: #352fa4;
}

.category-card h2 i.fa-mobile-alt {
    color: #034d60;
}

.category-card h2 i.fa-home {
    color: #6d2803;
}

.category-card h2 i.fa-university {
    color: #07615a;
}

.category-card h2 i.fa-hospital {
    color: #630d0d;
}

.category-card h2 i.fa-shield-alt {
    color: #1b4d1e;
}

/* 链接列表样式 */
.link-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.link-list li {
    margin-bottom: 0.875rem;
}

.link-list li a {
    color: var(--primary-color);
    text-decoration: none;
    display: inline-block;
    font-size: 0.9375rem;
    line-height: 1.5;
    transition: var(--transition-base);
    padding: 4px 0;
}

.link-list li a:hover {
    color: var(--primary-dark);
    transform: translateX(4px);
}

/* 展开内容样式 */
.expandable-content {
    margin-top: 0.75rem;
}

.expandable-content li {
    opacity: 0;
    transform: translateY(-8px);
    transition: var(--transition-base);
}

/* Show More 按钮样式 */
.show-more-btn {
    width: 100%;
    padding: 0.75rem;
    margin-top: 1rem;
    background-color: var(--accent-color);
    color: var(--primary-color);
    border: 1px solid rgba(37, 99, 235, 0.1);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition-base);
}

.show-more-btn:hover {
    background-color: var(--primary-color);
    color: white;
}

/* 页面标题样式 */
.page-title {
    font-size: 2.25rem;
    color: var(--text-primary);
    margin: 2rem 0 1.5rem 2rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    position: relative;
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background-color: rgba(255, 255, 255, 0.85);
    border-radius: 12px;
    backdrop-filter: blur(4px);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

/* 响应式布局 */
@media (max-width: 1400px) {
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1024px) {
    .sidebar {
        width: 240px;
    }
    
    .main-content {
        margin-left: 240px;
        width: calc(100% - 240px);
    }
}

@media (max-width: 768px) {
    .category-grid {
        grid-template-columns: 1fr;
        padding: 16px;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }
    
    .main-content {
        margin-left: 0;
        width: 100%;
        padding: 24px;
    }
    
    .page-title {
        font-size: 1.875rem;
        margin: 1.5rem 0 1rem 1rem;
        padding: 0.4rem 1.2rem;
    }

    .logo img {
        width: 30px;
        height: 30px;
    }
    
    .logo span {
        font-size: 20px;
    }
}

/* Essentials 模块背景 */
#essentials {
    background-color: var(--Essentials);
    border-radius: 24px;
    padding: 32px;
    position: relative;
    overflow: hidden;
}

#essentials::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: linear-gradient(to bottom right, var(--Essentials), var(--Essentials-dark));
    opacity: 0.7;
    z-index: 0;
}

#essentials .page-title,
#essentials .category-grid {
    position: relative;
    z-index: 1;
}

#essentials .category-card {
    backdrop-filter: blur(8px);
    background-color: rgba(255, 255, 255, 0.9);
}

/* Lifestyle 模块背景 */
#lifestyle {
    background-color: var(--Lifestyle);
    border-radius: 24px;
    padding: 32px;
    position: relative;
    overflow: hidden;
    margin-top: 48px;
}

#lifestyle::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: linear-gradient(to bottom right, var(--Lifestyle), var(--Lifestyle-dark));
    opacity: 0.7;
    z-index: 0;
}

#lifestyle .page-title,
#lifestyle .category-grid {
    position: relative;
    z-index: 1;
}

#lifestyle .category-card {
    backdrop-filter: blur(8px);
    background-color: rgba(255, 255, 255, 0.9);
}

/* Lifestyle 卡片图标颜色 */
#lifestyle .category-card h2 i.fa-home {
    color: #004c34;
}

#lifestyle .category-card h2 i.fa-utensils {
    color: #631727;
}

#lifestyle .category-card h2 i.fa-bus {
    color: #23245f;
}

#lifestyle .category-card h2 i.fa-theater-masks {
    color: #3c1a76;
}

#lifestyle .category-card h2 i.fa-film {
    color: #4e0618;
}

#lifestyle .category-card h2 i.fa-newspaper {
    color: #004060;
}

#lifestyle .category-card h2 i.fa-plane {
    color: #044c5e;
}

/* Work & Jobs 模块背景 */
#work-jobs {
    background-color: var(--worknjob);
    border-radius: 24px;
    padding: 32px;
    position: relative;
    overflow: hidden;
    margin-top: 48px;
}

#work-jobs::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: linear-gradient(to bottom right, var(--worknjob), var(--worknjob-dark));
    opacity: 0.7;
    z-index: 0;
}

#work-jobs .page-title,
#work-jobs .category-grid {
    position: relative;
    z-index: 1;
}

/* Work & Jobs 模块卡片样式 */
#work-jobs .category-card {
    backdrop-filter: blur(8px);
    background-color: rgba(255, 255, 255, 0.9);
}

#work-jobs .category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    padding: 24px;
    position: relative;
    z-index: 1;
}

@media (max-width: 1400px) {
    #work-jobs .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    #work-jobs .category-grid {
        grid-template-columns: 1fr;
        padding: 16px;
    }
}

/* Work & Jobs 卡片图标颜色 */
#work-jobs .category-card h2 i.fa-briefcase {
    color: #16496b;
}

#work-jobs .category-card h2 i.fa-laptop {
    color: #135f32;
}

#work-jobs .category-card h2 i.fa-comments {
    color: #4b1a79;
}

/* Business 模块背景 */
#business {
    background-color: var(--Business);
    border-radius: 24px;
    padding: 32px;
    position: relative;
    overflow: hidden;
    margin-top: 48px;
}

#business::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: linear-gradient(to bottom right, var(--Business), var(--Business-dark));
    opacity: 0.7;
    z-index: 0;
}

#business .page-title,
#business .category-grid {
    position: relative;
    z-index: 1;
}

#business .category-card {
    backdrop-filter: blur(8px);
    background-color: rgba(255, 255, 255, 0.9);
}

/* Business 卡片图标颜色 */
#business .category-card h2 i.fa-file-alt {
    color: #242076;
}

#business .category-card h2 i.fa-coins {
    color: #ba5604;
}

#business .category-card h2 i.fa-handshake {
    color: #066948;
}

#business .category-card h2 i.fa-credit-card {
    color: #204b91;
}

#business .category-card h2 i.fa-shopping-bag {
    color: #7e2250;
}

/* Payment Tools 卡片中的分类标题 */
#business #payment-tools .link-list li strong {
    display: block;
    color: var(--text-primary);
    font-size: 1rem;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
    padding-bottom: 0.25rem;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

#business #payment-tools .link-list li:first-child strong {
    margin-top: 0;
}

/* Learning 模块背景 */
#learning {
    background-color: var(--Learning);
    border-radius: 24px;
    padding: 32px;
    position: relative;
    overflow: hidden;
    margin-top: 48px;
}

#learning::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: linear-gradient(to bottom right, var(--Learning), var(--Learing-dark));
    opacity: 0.7;
    z-index: 0;
}

#learning .page-title,
#learning .category-grid {
    position: relative;
    z-index: 1;
}

#learning .category-card {
    backdrop-filter: blur(8px);
    background-color: rgba(255, 255, 255, 0.9);
}

#learning .category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    padding: 24px;
    position: relative;
    z-index: 1;
}

@media (max-width: 1400px) {
    #learning .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    #learning .category-grid {
        grid-template-columns: 1fr;
        padding: 16px;
    }
}

/* Learning 卡片图标颜色 */
#learning .category-card h2 i.fa-language {
    color: #0981b8;
}

#learning .category-card h2 i.fa-university {
    color: #2d1d53;
}

#learning .category-card h2 i.fa-brain {
    color: #5f1723;
}

/* Thai Language Learning 卡片中的分类标题 */
#learning #thai-language .link-list li strong {
    display: block;
    color: var(--text-primary);
    font-size: 1rem;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
    padding-bottom: 0.25rem;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

#learning #thai-language .link-list li:first-child strong {
    margin-top: 0;
}

/* 移除签证信息卡片的特殊样式 */
.category-title,
.category-title strong,
.category-title .expandable-content,
.category-title .expandable-content li,
.category-title .show-more-btn,
.category-title:hover {
    /* 重置所有相关样式 */
    all: unset;
}

/* 版本信息样式 */
.version-info {
    text-align: center;
    padding: 20px 0;
    margin-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.version-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
    opacity: 0.8;
}

/* About Section Styles */
.about-section {
    margin-top: 48px;
    padding: 32px;
    background-color: var(--background-light);
    border-radius: 24px;
}

.about-section .category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    padding: 24px;
}

.about-section .category-card {
    background: var(--background-light);
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    border: 1px solid rgba(0,0,0,0.05);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.about-section .category-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px -4px rgba(0,0,0,0.1);
}

.about-section .category-card h2 {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
}

.about-content {
    flex: 1;
    padding: 0;
    color: var(--text-color);
}

.welcome-text {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.feature-list {
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.feature-list li {
    margin: 10px 0;
    display: flex;
    align-items: center;
}

.feature-list i {
    color: var(--primary-color);
    margin-right: 10px;
    font-size: 1.1rem;
}

.goal-text {
    font-style: italic;
    margin-top: 20px;
    color: var(--text-color);
}

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

.contact-list {
    list-style: none;
    padding: 0;
    margin: 0 0 20px 0;
}

.contact-list li {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    gap: 10px;
}

.contact-list li i {
    color: var(--primary-color);
    width: 20px;
}

.contact-list a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-list a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

/* 社交媒体二维码样式 */
.social-qr-codes {
    margin-top: auto;
}

.social-qr-codes h3 {
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.qr-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

.qr-item {
    text-align: center;
}

.qr-image {
    width: 100%;
    max-width: 100px;
    height: auto;
    border-radius: 8px;
    margin-bottom: 8px;
}

.qr-item p {
    font-size: 0.9rem;
    margin: 0;
    color: var(--text-secondary);
}

@media (max-width: 1200px) {
    .about-section .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .qr-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .about-section .category-grid {
        grid-template-columns: 1fr;
    }
    
    .qr-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 语言切换按钮样式 */
.language-switcher {
    position: relative;
    margin: 10px;
}

.language-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: #f5f5f5;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    color: #333;
    transition: all 0.3s ease;
}

.language-toggle:hover {
    background: #e0e0e0;
}

.language-toggle i {
    font-size: 16px;
}

.language-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    display: none;
    min-width: 150px;
    z-index: 1000;
}

.language-dropdown.active {
    display: block;
}

.language-option {
    display: block;
    padding: 10px 15px;
    color: #333;
    text-decoration: none;
    transition: background-color 0.3s ease;
}

.language-option:hover {
    background-color: #f5f5f5;
}

/* 移动端语言切换样式 */
.mobile-header .language-switcher {
    margin: 0 auto;
    position: relative;
    display: flex;
    justify-content: center;
}

.mobile-header .language-toggle {
    background: transparent;
    color: #333;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
}

.mobile-header .language-dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: white;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    min-width: 150px;
    z-index: 1000;
    text-align: center;
}

.mobile-header .language-option {
    display: block;
    padding: 10px 15px;
    color: #333;
    text-decoration: none;
    transition: background-color 0.3s ease;
    text-align: center;
}

/* 桌面端语言切换样式 */
.sidebar .language-switcher {
    margin: 20px 10px;
}

.sidebar .language-toggle {
    width: 100%;
    justify-content: center;
}

.sidebar .language-dropdown {
    right: 0;
    left: 0;
}

/* 移动端顶部栏 */
.mobile-header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--background-light);
    padding: 16px;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.mobile-header .menu-toggle {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.mobile-header .logo {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 8px;
    margin-left: 60px;
    margin-right: 60px;
    text-align: center;
}

.mobile-header .logo img {
    width: 30px;
    height: 30px;
    margin-right: 8px;
}

.mobile-header .header-buttons {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 1001;
}

.mobile-header .logo-subtitle {
    text-align: center;
    margin: 0 auto;
    flex: 1;
}

.mobile-header .main-subtitle {
    display: block;
    text-align: center;
    margin: 0 auto;
}

.mobile-header .language-switcher {
    margin-top: 8px;
}

.mobile-header .logo {
    margin: 0;
    text-align: center;
}

.mobile-header .logo-subtitle {
    text-align: center;
    margin: 0 auto;
    flex: 1;
}

/* 移动端悬浮菜单 */
.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1002;
}

.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100vh;
    background-color: var(--background-light);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 1003;
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.mobile-menu-buttons {
    display: flex;
    gap: 10px;
}

.mobile-menu-buttons .bookmark-btn,
.mobile-menu-buttons .share-btn {
    background: none;
    border: none;
    color: #333;
    cursor: pointer;
    padding: 8px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.mobile-menu-buttons .bookmark-btn:hover,
.mobile-menu-buttons .share-btn:hover {
    background-color: rgba(0, 0, 0, 0.1);
    transform: scale(1.1);
}

.mobile-menu-buttons .bookmark-btn i,
.mobile-menu-buttons .share-btn i {
    font-size: 1.2rem;
}

.mobile-menu-header .close-menu {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-content {
    padding: 16px;
    height: calc(100vh - 65px);
    overflow-y: auto;
}

.mobile-nav-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mobile-nav-item {
    margin-bottom: 8px;
}

.mobile-nav-link {
    display: block;
    padding: 12px;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 8px;
    transition: background-color 0.3s ease;
}

.mobile-nav-link:hover {
    background-color: var(--accent-color);
}

.mobile-nav-link .link-content {
    display: flex;
    align-items: center;
    gap: 12px;
}

.mobile-nav-link i:first-child {
    width: 24px;
    text-align: center;
}

.mobile-nav-link .arrow {
    margin-left: auto;
    transition: transform 0.3s ease;
}

.mobile-nav-link.active .arrow {
    transform: rotate(180deg);
}

.mobile-submenu {
    list-style: none;
    padding: 0;
    margin: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.mobile-submenu.active {
    max-height: 1000px;
}

.mobile-submenu-item {
    margin: 4px 0;
}

.mobile-submenu-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 12px 8px 44px;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 6px;
    transition: background-color 0.3s ease;
}

.mobile-submenu-link:hover {
    background-color: var(--accent-color);
}

.mobile-submenu-link i {
    width: 20px;
    text-align: center;
}

/* 响应式布局调整 */
@media (max-width: 768px) {
    .mobile-header {
        display: block;
    }

    .sidebar {
        display: none;
    }

    .main-content {
        margin-left: 0;
        width: 100%;
        padding: 16px;
        padding-top: 120px;
    }

    .category-grid {
        grid-template-columns: 1fr;
        gap: 16px;
        padding: 16px;
    }
}