* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', sans-serif;
}

body {
    background-color: #FAFAFA;
    color: #1D2129;
    line-height: 1.6;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(22, 93, 255, 0.02) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(123, 97, 255, 0.02) 0%, transparent 20%);
}

.container {
    width: 100%;
    max-width: 1580px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 标题样式升级 */
h1 {
    font-size: 2.4rem;
    font-weight: 700;
    color: #1D2129;
    margin-bottom: 15px;
    line-height: 1.3;
}

h2 {
    font-size: 1.8rem;
    font-weight: 700;
    color: #1D2129;
    margin-bottom: 30px;
    position: relative;
    padding-bottom: 16px;
}

h2::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(135deg, #165DFF, #7B61FF);
    border-radius: 2px;
}

h3 {
    font-size: 1.4rem;
    font-weight: 600;
    color: #1D2129;
    margin-bottom: 15px;
    line-height: 1.4;
}

h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px;
}

/* 文本样式优化 */
p {
    color: #4E5969;
    margin-bottom: 1rem;
    font-size: 1rem;
    line-height: 1.7;
}

/* 链接样式升级 */
a {
    color: #165DFF;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

a:hover {
    color: #7B61FF;
}

/* 按钮样式高级化 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    gap: 8px;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(-100%);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: -1;
}

.btn:hover::before {
    transform: translateX(100%);
}

.btn-primary {
    background: linear-gradient(135deg, #165DFF, #7B61FF);
    color: #FFFFFF;
    box-shadow: 0 4px 15px rgba(22, 93, 255, 0.25);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(22, 93, 255, 0.35);
    color: #FFFFFF;
}

/* 页面标题区美化 */
.page-header {
    padding: 35px 0;
    background-color: #FFFFFF;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    position: relative;
    margin-top: 83px;
}

.page-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, #C9CDD4, transparent);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.header-title {
    flex: 1;
    min-width: 300px;
}

.header-title p {
    color: #86909C;
    font-size: 1.05rem;
    max-width: 700px;
}

/* 科技感Banner设计 */
.banner {
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #2A0F55 100%);
    padding: 70px 0;
    position: relative;
    overflow: hidden;
}

/* 科技感网格背景 */
.banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(22, 93, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(22, 93, 255, 0.1) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: 0;
}

/* 科技感光效元素 */
.banner::after {
    content: '';
    position: absolute;
    top: -30%;
    right: -20%;
    width: 60%;
    height: 120%;
    background: radial-gradient(circle, rgba(22, 93, 255, 0.2) 0%, transparent 70%);
    filter: blur(60px);
    z-index: 0;
    animation: pulse 15s infinite ease-in-out;
}

/* 科技感粒子效果 */
.banner-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.particle {
    position: absolute;
    background-color: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    opacity: 0;
    animation: float 10s infinite ease-in-out;
}

.banner-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.banner-slogan {
    font-size: 2.2rem;
    color: #FFFFFF;
    margin-bottom: 35px;
    font-weight: 600;
    line-height: 1.5;
    text-shadow: 0 2px 15px rgba(22, 93, 255, 0.3);
    background: linear-gradient(90deg, #FFFFFF, #00CFFD);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
h2.banner-slogan::after{display:none}
.search-box {
    max-width: 600px;
    margin: 0 auto;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    overflow: hidden;
    background-color: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.search-input {
    flex: 1;
    padding: 18px 24px;
    border: none;
    font-size: 1rem;
    outline: none;
    background-color: transparent;
    color: #FFFFFF;
}

.search-input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.search-button {
    background: linear-gradient(90deg, #165DFF, #7B61FF);
    color: #FFFFFF;
    border: none;
    padding: 0 24px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 500;
}

.search-button:hover {
    background: linear-gradient(90deg, #00CFFD, #7B61FF);
    transform: translateY(-2px);
}

/* 分类导航高级化 */
.category-nav {
    background-color: #FFFFFF;
    padding: 18px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid #F2F3F5;
}

/* 通用分类导航样式 */
.categories {
    display: flex;
    flex-direction: column; /* 默认垂直布局，在PC端通过媒体查询改为水平 */
    gap: 0; /* 消除间隙，使子菜单与父菜单无缝衔接 */
    padding-bottom: 0;
    scrollbar-width: thin;
}

.categories::-webkit-scrollbar {
    height: 4px;
}

.categories::-webkit-scrollbar-thumb {
    background-color: #C9CDD4;
    border-radius: 3px;
}

.category-item {
    padding: 14px 22px;
    border-radius: 0; /* 取消圆角，使整体更像菜单 */
    font-weight: 500;
    font-size: 0.95rem;
    white-space: nowrap;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: #FFFFFF;
    position: relative;
    padding-right: 40px; /* 为箭头预留更多空间 */
    border-bottom: 1px solid #F2F3F5; /* 添加分隔线 */
}

.category-item:hover {
    background-color: rgba(22, 93, 255, 0.05);
    transform: none; /* 移动端不需要上下浮动效果 */
}

.category-item.active {
    background-color: #165DFF;
    color: #FFFFFF;
    box-shadow: none; /* 移动端不需要阴影 */
}
.category-item.active a{color: #FFFFFF;}
.category-item.whatsapp {
    color: #25D366;
}

.category-item.whatsapp.active {
    background-color: #25D366;
    color: #FFFFFF;
    box-shadow: none;
}

.category-item.telegram {
    color: #2AABEE;
}

.category-item.telegram.active {
    background-color: #2AABEE;
    color: #FFFFFF;
    box-shadow: none;
}

.category-item.viber {
    color: #665CAC;
}

.category-item.viber.active {
    background-color: #665CAC;
    color: #FFFFFF;
    box-shadow: none;
}

/* 子菜单样式 - 统一在父菜单下方显示 */
.submenu {
    position: static; /* 静态定位，使其在文档流中显示在父菜单下方 */
    width: 100%; /* 宽度与父菜单一致 */
    background-color: #F7F8FA;
    border-radius: 0;
    box-shadow: none;
    padding: 0;
    margin: 0;
    z-index: 101;
    max-height: 0; /* 默认隐藏 */
    overflow: hidden;
    transition: max-height 0.3s ease-out; /* 平滑展开收起 */
}
.submenu a{color: #165DFF!important}
.has-submenu.active .submenu {
    max-height: 500px; /* 足够大的值以显示所有子项 */
}

.submenu-item {
    display: block;
    padding: 14px 22px 14px 40px; /* 左侧缩进，形成层级感 */
    color: #1D2129;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    border-bottom: 1px solid #F2F3F5;
}

.submenu-item:hover {
    background-color: rgba(22, 93, 255, 0.05);
    color: #165DFF;
    padding-left: 42px;
}

/* 子菜单箭头指示 */
.has-submenu::after {
    content: '';
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 5px solid currentColor;
    transition: transform 0.3s ease;
}

.has-submenu.active::after {
    transform: translateY(-50%) rotate(180deg);
}

/* 主内容区 */
.content-wrapper {
    padding: 60px 0;
}

.main-content {
    display: grid;
    grid-template-columns: 3fr 1fr;
    gap: 40px;
    width: 100%;
}

/* 文章列表区高级化 */
.articles-container {
    width: 100%;
}

.articles-list {
    display: flex;
    flex-direction: column;
    gap: 35px;
}

.article-card {
    background-color: #FFFFFF;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    gap: 25px;
    width: 100%;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(22, 93, 255, 0.12);
}

.article-thumbnail {
    width: 30%;
    height: auto;
    flex-shrink: 0;
    overflow: hidden;
    border-radius: 16px 0 0 16px;
    position: relative;
}

.article-thumbnail::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.1) 0%, transparent 100%);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.article-card:hover .article-thumbnail::after {
    opacity: 1;
}

.article-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: scale(1.02);
}

.article-card:hover .article-thumbnail img {
    transform: scale(1.08);
}

.article-content {
    padding: 25px;
    flex: 1;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 18px;
    margin-bottom: 12px;
    font-size: 0.85rem;
    color: #86909C;
}

.article-category {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.article-card:hover .article-category {
    transform: translateY(-2px);
}

.category-whatsapp {
    background-color: rgba(37, 211, 102, 0.1);
    color: #25D366;
}

.category-telegram {
    background-color: rgba(42, 171, 238, 0.1);
    color: #2AABEE;
}

.category-viber {
    background-color: rgba(102, 92, 172, 0.1);
    color: #665CAC;
}

.category-tips {
    background-color: rgba(22, 93, 255, 0.1);
    color: #165DFF;
}

.article-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    line-height: 1.4;
}

.article-title a {
    color: #1D2129;
    background: linear-gradient(to right, #165DFF, #165DFF);
    background-position: 0% 100%;
    background-repeat: no-repeat;
    background-size: 0% 2px;
    transition: background-size 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding-bottom: 2px;
}

.article-title a:hover {
    color: #165DFF;
    background-size: 100% 2px;
}

.article-excerpt {
    color: #4E5969;
    font-size: 0.98rem;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-read-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
    color: #165DFF;
    padding: 4px 0;
}

.article-read-more i {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.article-read-more:hover {
    color: #7B61FF;
}

.article-read-more:hover i {
    transform: translateX(4px);
}

/* 侧边栏高级化 */
.sidebar {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 35px;
}

.sidebar-widget {
    background-color: #FFFFFF;
    border-radius: 16px;
    padding: 28px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    width: 100%;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.sidebar-widget::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(135deg, #165DFF, #7B61FF);
    transform: scaleX(0);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-widget:hover {
    box-shadow: 0 8px 24px rgba(22, 93, 255, 0.12);
    transform: translateY(-3px);
}

.sidebar-widget:hover::before {
    transform: scaleX(1);
}

.widget-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 22px;
    padding-bottom: 12px;
    border-bottom: 1px solid #F2F3F5;
    display: flex;
    align-items: center;
    gap: 10px;
    color: #1D2129;
}

.widget-title i {
    color: #165DFF;
    background-color: rgba(22, 93, 255, 0.1);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 热门文章 */
.popular-articles {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.popular-item {
    display: flex;
    gap: 14px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 10px;
    border-radius: 8px;
    cursor: pointer;
}

.popular-item:hover {
    transform: translateX(5px);
    background-color: #F2F3F5;
}

.popular-thumbnail {
    width: 90px;
    height: 70px;
    border-radius: 8px;
    overflow: hidden;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.popular-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.popular-item:hover .popular-thumbnail img {
    transform: scale(1.08);
}

.popular-content {
    flex: 1;
}

.popular-title {
    font-size: 0.98rem;
    font-weight: 500;
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.popular-item:hover .popular-title {
    color: #165DFF;
}

.popular-meta {
    font-size: 0.8rem;
    color: #86909C;
    display: flex;
    align-items: center;
    gap: 5px;
}

/* 最新文章 */
.latest-articles {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.latest-item {
    padding: 10px;
    padding-bottom: 15px;
    border-bottom: 1px solid #F2F3F5;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 8px;
    cursor: pointer;
}

.latest-item:last-child {
    border-bottom: none;
    padding-bottom: 10px;
}

.latest-item:hover {
    transform: translateX(5px);
    background-color: #F2F3F5;
}

.latest-title {
    font-size: 0.98rem;
    font-weight: 500;
    margin-bottom: 6px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.latest-item:hover .latest-title {
    color: #165DFF;
}

.latest-date {
    font-size: 0.8rem;
    color: #86909C;
    display: flex;
    align-items: center;
    gap: 5px;
}

/* 标签云高级化 */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.tag {
    padding: 6px 16px;
    background-color: #F2F3F5;
    border-radius: 20px;
    font-size: 0.85rem;
    color: #4E5969;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.tag::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #165DFF, #7B61FF);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 0;
}

.tag span {
    position: relative;
    z-index: 1;
}

.tag:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(22, 93, 255, 0.15);
}

.tag:hover::before {
    opacity: 1;
}

.tag:hover span {
    color: #FFFFFF;
}

.tag.hot {
    background-color: rgba(22, 93, 255, 0.1);
    color: #165DFF;
    font-weight: 500;
}

/* 联系CTA高级化 */
.contact-cta {
    background: linear-gradient(135deg, #165DFF, #7B61FF);
    color: #FFFFFF;
    text-align: center;
    padding: 35px 25px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(22, 93, 255, 0.2);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    border: none;
}

.contact-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
    transition: 0.8s ease;
    transform: skewX(-20deg);
}

.contact-cta:hover::before {
    left: 100%;
}

.contact-cta:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 15px 35px rgba(22, 93, 255, 0.35);
}

.contact-cta h3 {
    color: #FFFFFF;
    margin-bottom: 18px;
    font-size: 1.4rem;
}

.contact-cta p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 28px;
    font-size: 0.98rem;
}

/* 底部SEO区域高级化 */
.seo-footer {
    background-color: #FFFFFF;
    padding: 50px 0;
    border-top: 1px solid #F2F3F5;
    position: relative;
}

.seo-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, #C9CDD4, transparent);
}

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

.seo-content p {
    color: #86909C;
    font-size: 0.98rem;
    line-height: 1.8;
}

/* 响应式设计优化 */
@media (min-width: 769px) {
    /* PC端分类导航 - 水平布局 */
    .categories {
        flex-direction: row;
        gap: 10px;
        overflow-x: visible;
        flex-wrap: nowrap;
    }
    
    .category-item {
        padding: 10px 62px 10px 22px;
        border-radius: 30px;
        background-color: #F2F3F5;
        border-bottom: none;
        padding-right: 28px;
    }
    
    .category-item:hover {
        transform: translateY(-2px);
    }
    
    .category-item.active {
        box-shadow: 0 4px 12px rgba(22, 93, 255, 0.2);
    }
    
    .category-item.whatsapp.active {
        box-shadow: 0 4px 12px rgba(37, 211, 102, 0.2);
    }
    
    .category-item.telegram.active {
        box-shadow: 0 4px 12px rgba(42, 171, 238, 0.2);
    }
    
    .category-item.viber.active {
        box-shadow: 0 4px 12px rgba(102, 92, 172, 0.2);
    }
    
    /* PC端子菜单 - 下拉式 */
    .submenu {
        position: absolute;
        top: 100%;
        left: 0;
        min-width: 220px;
        background-color: #FFFFFF;
        border-radius: 8px;
        box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
        padding: 12px 0;
        margin-top: 8px;
        max-height: none;
        overflow: visible;
    }
    
    .submenu-item {
        padding: 10px 20px;
        padding-left: 20px;
    }
    
    .submenu-item:hover {
        padding-left: 22px;
    }
}

@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 2.5fr 1fr;
        gap: 30px;
    }
    
    .article-thumbnail {
        width: 200px;
        height: 160px;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.6rem;
        margin-bottom: 25px;
    }
    
    .banner {
        padding: 50px 0;
    }
    
    .banner-slogan {
        font-size: 1.8rem;
    }
    
    .content-wrapper {
        padding: 45px 0;
    }
    
    .article-card {
        flex-direction: column;
    }
    
    .article-thumbnail {
        width: 100%;
        height: 200px;
        border-radius: 16px 16px 0 0;
    }
    
    .article-content {
        padding: 20px;
    }
    
    .main-content {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        order: -1;
        margin-bottom: 30px;
    }
}

@media (max-width: 576px) {
    .page-header {
        padding: 25px 0;
    }
    
    h1 {
        font-size: 1.7rem;
    }
    
    .banner {
        padding: 40px 0;
    }
    
    .banner-slogan {
        font-size: 1.5rem;
        margin-bottom: 25px;
    }
    
    .search-input {
        padding: 14px 18px;
    }
    
    .search-button {
        padding: 0 18px;
    }
    
    .category-item {
        padding: 12px 16px;
        font-size: 0.9rem;
    }
    
    .content-wrapper {
        padding: 35px 0;
    }
    
    .sidebar-widget {
        padding: 20px;
    }
    
    .article-thumbnail {
        height: 160px;
    }
}


/* PC端 - 点击显示子菜单 */
@media (min-width: 769px) {
  .submenu {
    display: none;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background-color: #FFFFFF;
    border-radius: 8px;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
    padding: 12px 0;
    margin-top: 8px;
    z-index: 200;
  }
  .category-item.active .submenu {
    display: block;
    opacity: 1;
    visibility: visible;
  }
  .submenu-item {
    padding: 10px 20px;
    transition: all 0.2s ease;
  }
  .submenu-item:hover {
    background-color: rgba(22, 93, 255, 0.05);
    color: #165DFF;
    padding-left: 24px;
  }
}

/* 移动端 - 手风琴效果（上下结构） */
@media (max-width: 768px) {
  .categories {
    flex-direction: column;
  }
  .category-item {
    display: block;
    padding: 14px 18px;
    border-bottom: 1px solid #eee;
  }
  .submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    padding-left: 0;
    background: #F9FAFB;
  }
  .category-item.active .submenu {
    max-height: 500px;
  }
  .submenu-item {
    display: block;
    padding: 12px 30px;
    font-size: 0.9rem;
    border-bottom: 1px solid #E5E7EB;
    color: #333;
  }
  .submenu-item:hover {
    background-color: #eef3ff;
    color: #165DFF;
    padding-left: 34px;
  }
}


/* 高级动画效果 */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), 
                transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.3s; }
.delay-3 { transition-delay: 0.45s; }
.delay-4 { transition-delay: 0.6s; }
.delay-5 { transition-delay: 0.75s; }

/* 科技感动画 */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.8;
    }
    50% {
        transform: scale(1.1);
        opacity: 1;
    }
}

@keyframes float {
    0% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }
    20% {
        opacity: 0.6;
    }
    80% {
        opacity: 0.6;
    }
    100% {
        transform: translateY(-100px) translateX(50px);
        opacity: 0;
    }
}

/* 分页样式 */
.pagination {
    margin-top: 30px;
    text-align: center;
    padding: 15px 0;
}

.pagination .page-numbers {
    display: inline-block;
    padding: 8px 15px;
    margin: 0 4px;
    border-radius: 6px;
    text-decoration: none;
    color: #4a5568;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.pagination .page-numbers.current {
    background: #165DFF;
    color: #fff;
    border-color: #165DFF;
}

.pagination .page-numbers:hover:not(.current) {
    background: rgba(22, 93, 255, 0.1);
    color: #165DFF;
    transform: translateY(-2px);
}