* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

a {
    text-decoration: none;
}

body {
    font-family: 'Segoe UI', 'Poppins', 'Roboto', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(145deg, #eef2f9 0%, #e2e9f2 100%);
    min-height: 100vh;
    color: #1a2634;
}

/* 主容器 */
.container {
    min-height: 100vh;
    padding-top: 0;
}

.banner {
    width: 100%;
    height: 500px;
    background: url('../images/banner.jpg') center center no-repeat;
    background-size: cover;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.screen-one {
    width: 100%;
    min-height: 995px;
    background: url('../images/bg1.png') center center no-repeat;
    background-size: cover;
    position: relative;
    align-items: center;
    justify-content: flex-start;
    padding-bottom: 50px;
}

/* 导航 */
.nav-list {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    height: 136px;
    background: #fff;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 
        0 8px 32px rgba(31, 110, 255, 0.1),
        0 2px 10px rgba(0, 0, 0, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.6);
    display: flex;
    align-items: center;
}

.nav-list > .nav-item {
    padding: 20px;
    flex: 1 0 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.nav-list > .nav-item:hover {
    transform: translateY(-4px);
}

/* 图标容器 - 玻璃拟态风格 */
.nav-list > .nav-item > .nav-icon {
    width: 100%;
    text-align: center;
    position: relative;
}

/* 图标背景 */
.nav-list > .nav-item > .nav-icon::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    height: 75px;
    z-index: 0;
    transition: all 0.3s ease;
}

/* SVG 图标 */
.nav-list > .nav-item > .nav-icon > img {
    height: 75px;
    position: relative;
    z-index: 1;
}

/* 标题文字 */
.nav-list > .nav-item > .nav-title {
    width: 100%;
    text-align: center;
    font-size: 15px;
    color: #2c3e50;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-list > .nav-item:hover > .nav-title {
    color: #2c3e50;
}

/* 激活状态 */
.nav-list > .nav-item.nav-active > .nav-title {
    font-weight: bold;
    color: #2c3e50;
}

.nav-list > .nav-item.nav-active > .nav-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 3px;
    background: linear-gradient(90deg, #3180FF, #317EFE);
    border-radius: 2px;
    box-shadow: 0 2px 8px rgba(26, 110, 255, 0.3);
}

/* 响应式 */
@media (max-width: 1200px) {
    .nav-list > .nav-item {
        flex: 1 0 160px;
        padding: 15px;
    }
}

@media (max-width: 768px) {
    .nav-list {
        height: auto;
        flex-wrap: wrap;
        padding: 20px;
    }

    .nav-list > .nav-item {
        flex: 1 0 140px;
        padding: 15px;
    }

    .nav-list > .nav-item > .nav-icon::before {
        width: 60px;
        height: 60px;
    }

    .nav-list > .nav-item > .nav-icon > svg {
        height: 60px;
        width: 60px;
        padding: 18px;
    }
}

/* 园区动态 */
.yqdt {
    max-width: 1400px;
    margin: 50px auto;
}

/* 标题区域 */
.section-header {
    display: flex;
    align-items: center;
    margin-bottom: 24px;
    position: relative;
}

.section-icon {
    padding-top: 15px;
}

.section-title {
    font-size: 28px;
    font-weight: 700;
    color: #1a1a1a;
    position: relative;
    padding-left: 10px;
}

/* 主内容区 */
.main-content {
    display: flex;
    gap: 24px;
}

/* 左侧安全资讯 */
.news-section {
    flex: 2;
    background: #fff;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.news-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
}

.aqzx-bg {
    width: 100%;
    height: 82px;
    background: url('../images/aqzx-bg.png') center center no-repeat;
    background-size: cover;
    position: relative;
}

.news-title {
    display: flex;
    align-items: center;
    gap: 8px;
}

.news-title-icon {
    font-size: 18px;
    font-weight: 700;
    color: #317EFE;
    font-style: italic;
    text-shadow: 2px 2px 4px rgba(26, 110, 255, 0.2);
}

.view-all {
    display: flex;
    align-items: center;
    gap: 4px;
    color: #3180FF;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    background-color: #fff;
    padding: 10px 20px;
    border-radius: 20px;
}

.view-all:hover {
    color: #317EFE;
    transform: translateX(4px);
}

/* 标签筛选 */
.filter-tabs {
    display: flex;
    gap: 12px;
    padding: 20px 24px;
    border-bottom: 1px solid #f5f5f5;
}

.tab {
    padding: 8px 20px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    background: #f5f7fa;
    color: #666;
}

.tab:hover {
    background: #e8f1ff;
    color: #3180FF;
}

.tab.active {
    background: #3180FF;
    color: #fff;
}

.news-item {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.news-item.hidden {
    display: none;
}

/* 新闻列表 */
.news-list {
    padding: 20px 24px;
}

.news-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.news-item:hover {
    transform: translateX(4px);
}

.news-image {
    width: 180px;
    height: 120px;
    overflow: hidden;
    position: relative;
    flex-shrink: 0;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-tag {
    position: absolute;
    top: 8px;
    left: 8px;
    padding: 4px 10px;
    font-size: 12px;
    color: #fff;
    font-weight: 500;
}

.tag-orange {
    background: #FB9010;
}

.tag-red {
    background: #F75433;
}

.tag-blue {
    background: #337DFF;
}

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

.news-title-text {
    font-size: 16px;
    font-weight: 600;
    color: #333;
    line-height: 1.5;
    margin-bottom: 10px;
    cursor: pointer;
    transition: color 0.3s ease;
}

.news-title-text:hover {
    color: #317EFE;
}

.news-date {
    display: inline-block;
    padding: 4px 12px;
    background: #DFEAFE;
    color: #317EFE;
    font-size: 13px;
    margin-bottom: 10px;
    width: fit-content;
}

.news-desc {
    font-size: 14px;
    color: #888;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 右侧通知通告 */
.notice-section {
    width: 434px;
    height: 644px;
    background: url('../images/tztg-bg.png') center center no-repeat;
    position: relative;
    overflow: hidden;
}

.notice-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
}

.notice-title {
    display: flex;
    align-items: center;
    gap: 8px;
}

.notice-title-icon {
    font-size: 18px;
    font-weight: 700;
    color: #317EFE;
    font-style: italic;
    text-shadow: 2px 2px 4px rgba(26, 110, 255, 0.2);
}

.notice-list {
    padding: 25px;
    width: 100%;
}

.notice-item {
    width: 383px;
    height: 142px;
    background: url('../images/tztz-item-bg.png') center center no-repeat;
    position: relative;
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: 0 2px 8px rgba(74, 158, 255, 0.08);
    transition: all 0.3s ease;
    cursor: pointer;
}

.notice-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(74, 158, 255, 0.15);
}

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

.notice-category {
    color: #3180FF;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
}

.notice-title-text {
    font-size: 15px;
    color: #333;
    font-weight: 500;
    line-height: 1.5;
    margin-bottom: 8px;
}

.notice-date {
    font-size: 13px;
    color: #999;
}

.notice-footer {
    padding: 0 24px;
    text-align: center;
}

.notice-footer .view-all {
    justify-content: center;
    background-color: #F2F6FF;
    border-radius: 0;
}

/* 响应式 */
@media (max-width: 1024px) {
    .main-content {
        flex-direction: column;
    }

    .news-image {
        width: 140px;
        height: 100px;
    }
}

@media (max-width: 640px) {
    .news-item {
        flex-direction: column;
    }

    .news-image {
        width: 100%;
        height: 160px;
    }

    .filter-tabs {
        flex-wrap: wrap;
    }
}

/* 管理登录 */
.portal-admin {
    width: 100%;
    height: 380px;
    padding: 86px;
}

.portal-container {
    max-width: 1400px;
    width: 100%;
    display: flex;
    gap: 20px;
    margin: 0 auto;
}

/* 卡片基础样式 */
.portal-card {
    flex: 1;
    height: 208px;
    padding: 70px 50px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.portal-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

/* 园区端 - 左侧 */
.park-card {
    width: 688px;
    height: 208px;
    background: url('../images/yq-bg.png') center center no-repeat;
    position: relative;
    overflow: hidden;
}

/* 企业端 - 右侧 */
.enterprise-card {
    background: linear-gradient(135deg, #5ba3ff 0%, #2b8cff 100%);
}

/* 内容区 */
.card-content {
    position: relative;
    z-index: 1;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.portal-card .card-title {
    font-size: 24px;
    font-weight: 500;
    color: #fff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.card-tag {
}

.portal-card .card-desc {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.6;
    max-width: 70%;
}

/* 登录按钮 */
.login-btn {
    position: absolute;
    top: 70px;
    right: 50px;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    background: #fff;
    border-radius: 24px;
    font-size: 14px;
    color: #4a9eff;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    z-index: 2;
    border: none;
}

.login-btn:hover {
    background: #f0f7ff;
    transform: translateX(4px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.login-btn svg {
    width: 16px;
    height: 16px;
    transition: transform 0.3s ease;
}

.login-btn:hover svg {
    transform: translateX(4px);
}

/* 响应式 */
@media (max-width: 768px) {
    .portal-container {
        flex-direction: column;
    }

    .portal-card {
        height: 180px;
        padding: 30px;
    }

    .portal-card .card-title {
        font-size: 20px;
    }

    .portal-card .card-desc {
        max-width: 100%;
        font-size: 14px;
    }

    .login-btn {
        position: relative;
        top: auto;
        right: auto;
        margin-top: 20px;
        align-self: flex-start;
    }
}

/* 安全服务 */
.aqfw-main {
    width: 100%;
    height: 970px;
    padding: 80px 0;
    background: #fff;
}

.aqfw-container {
    max-width: 1400px;
    margin: 0 auto;
}

/* 主内容区 */
.main-wrapper {
    width: 1400px;
    height: 755px;
    background: url('../images/aqfw-bg.png') center center no-repeat;
    position: relative;
    overflow: hidden;
    display: flex;
    gap: 0;
}

/* 左侧边栏 */
.sidebar {
    width: 280px;
    padding: 80px 60px;
    color: #fff;
    position: relative;
    overflow: hidden;
}

/* 侧边栏背景装饰 */
.sidebar::before {
    content: '';
    position: absolute;
    right: -50px;
    bottom: -50px;
    width: 300px;
    height: 300px;
    background: url('https://picsum.photos/seed/safety-icon/400/400') center/cover;
    opacity: 0.15;
    border-radius: 50%;
}

.sidebar-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 40px;
    position: relative;
}

.sidebar-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 20px;
    width: 80px;
    height: 4px;
    background: #fff;
    border-radius: 2px;
}

.menu-list {
    list-style: none;
    position: relative;
    z-index: 1;
}

.menu-item {
    padding: 14px 0;
    font-size: 16px;
    color: rgba(255, 255, 255, 0.85);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

.menu-item::before {
    content: '';
    width: 6px;
    height: 6px;
    transition: all 0.3s ease;
}

.menu-item:hover,
.menu-item.active {
    color: #fff;
    font-weight: 600;
}

.menu-item:hover::before,
.menu-item.active::before {
    background: #ffb347;
    width: 8px;
    height: 8px;
}

.menu-item.view-more {
    color: #fff;
    text-decoration: underline;
    text-underline-offset: 4px;
}

.sidebar .view-more:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateX(4px);
}

/* 右侧内容区 */
.content-area {
    flex: 1;
    padding: 40px;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.service-card {
    width: 330px;
    height: 324px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
}

.service-card.hidden {
    display: none;
}

.service-card .card-image {
    width: 100%;
    height: 324px;
    object-fit: cover;
    display: block;
    position: relative;
    z-index: 0;
}

.service-card .card-image > img {
    /*width: 100%;*/
    height: 100%;
}

.card-body {
    padding: 20px;
    position: absolute;
    z-index: 99;
    top: 220px;
    width: 330px;
    height: 105px;
    background: url('../images/aqfw-item-title-bg.png') center center no-repeat;
}

.card-text {
    font-size: 15px;
    color: #333;
    line-height: 1.7;
    font-weight: 500;
}

/* 响应式 */
@media (max-width: 1200px) {
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .main-wrapper {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        padding: 30px 20px;
    }

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

/* 安全培训 */
.aqpx-main {
    width: 100%;
    height: 480px;
    padding: 60px 0;
    background: url('../images/aqpx-bg.png') center center no-repeat;
    background-size: cover;
    position: relative;
}

.aqpx-container {
    max-width: 1400px;
    margin: 0 auto;
}

.aqpx-container .section-title-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.aqpx-container .view-more {
    display: flex;
    align-items: center;
    gap: 6px;
    color: #4a9eff;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    right: 0px;
    position: absolute;
    background-color: transparent;
    padding: 0;
    border-radius: 0;
}

.aqpx-container .view-more:hover {
    color: #1a6eff;
    transform: translateX(4px);
}

.aqpx-container .view-more svg {
    width: 16px;
    height: 16px;
}

/* 卡片网格 */
.training-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.training-card {
    height: 280px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.training-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
}

/* 卡片配色 */
.card-blue {
    background: url('../images/aqpx-bg1.png') center center no-repeat;
    background-size: cover;
}

.card-cyan {
    background: url('../images/aqpx-bg2.png') center center no-repeat;
    background-size: cover;
}

.card-orange {
    background: url('../images/aqpx-bg3.png') center center no-repeat;
    background-size: cover;
}

.card-sky {
    background: url('../images/aqpx-bg4.png') center center no-repeat;
    background-size: cover;
}

.aqpx-container .card-title {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.aqpx-container .card-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.8;
    flex: 1;
    position: relative;
    z-index: 1;
    margin-top: 8px;
}

/* 底部装饰 */
.card-decoration {
    position: absolute;
    bottom: 20px;
    right: 20px;
    width: 80px;
    height: 80px;
    background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, transparent 70%);
    border-radius: 50%;
}

/* 响应式 */
@media (max-width: 1200px) {
    .training-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .training-grid {
        grid-template-columns: 1fr;
    }

    .aqpx-container .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
}

/* 应急科普 */
.yjkp-main {
    width: 100%;
    height: 707px;
    padding: 60px 0;
    background: url('../images/yjkp-bg.png') center center no-repeat;
    background-size: cover;
    position: relative;
}

.yjkp-container {
    max-width: 1400px;
    margin: 0 auto;
}

/* 标题区域 */
.yjkp-container .section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.yjkp-container .section-title-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.yjkp-container .section-icon {
    padding-top: 15px;
}

.yjkp-container .section-title {
    font-size: 28px;
    font-weight: 700;
    color: #1a1a1a;
}

.yjkp-container .view-more {
    display: flex;
    align-items: center;
    gap: 6px;
    color: #4a9eff;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    background-color: transparent;
    padding: 0;
    border-radius: 0;
}

.yjkp-container .view-more:hover {
    color: #1a6eff;
    transform: translateX(4px);
}

.yjkp-container .view-more svg {
    width: 16px;
    height: 16px;
}

/* 卡片网格 */
.emergency-grid {
    height: 460px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.emergency-card {
    background: #fff;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    cursor: pointer;
}

.emergency-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(74, 158, 255, 0.15);
}

.yjkp-container .card-image {
    /*width: 100%;*/
    height: 288px;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}

.yjkp-container .emergency-card:hover .card-image {
    transform: scale(1.05);
}

.yjkp-container .card-content {
    padding: 24px;
}

.yjkp-container .card-title {
    font-size: 17px;
    font-weight: 600;
    color: #1a1a1a;
    line-height: 1.6;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.3s ease;
}

.yjkp-container .emergency-card:hover .card-title {
    color: #1a6eff;
}

.yjkp-container .card-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 响应式 */
@media (max-width: 1024px) {
    .emergency-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .emergency-grid {
        grid-template-columns: 1fr;
    }

    .yjkp-container .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .yjkp-container .card-image {
        height: 180px;
    }
}

/* 应用中心 */
.app-main {
    width: 100%;
    height: 380px;
    padding: 60px 0;
    background: #F2F7FB;
    position: relative;
}

.app-container {
    max-width: 1400px;
    margin: 0 auto;
}

.app-container .section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.app-container .section-title-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.app-container .section-icon {
    padding-top: 15px;
}

.app-container .section-title {
    font-size: 28px;
    font-weight: 700;
    color: #1a1a1a;
}

/* 标题区域 */
.app-container .view-more {
    display: flex;
    align-items: center;
    gap: 6px;
    color: #4a9eff;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    background-color: transparent;
    padding: 0;
    border-radius: 0;
}

.app-container .view-more:hover {
    color: #1a6eff;
    transform: translateX(4px);
}

.app-container .view-more svg {
    width: 16px;
    height: 16px;
}

/* 应用卡片网格 */
.app-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.app-card {
    width: 688px;
    height: 152px;
    background: url('../images/app-bg.png') center center no-repeat;
    background-size: cover;
    position: relative;
    padding: 30px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.app-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(74, 158, 255, 0.12);
}

/* 内容区域 */
.app-content {
    margin-left: 120px;
    flex: 1;
    min-width: 0;
}

.app-title {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 8px;
    transition: color 0.3s ease;
}

.app-card:hover .app-title {
    color: #1a6eff;
}

.app-desc {
    font-size: 14px;
    color: #888;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 立即查看按钮 */
.app-btn {
    padding: 10px 20px;
    background: transparent;
    border: 1px solid #e0e0e0;
    font-size: 14px;
    color: #666;
    cursor: pointer;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.app-btn:hover {
    background: #4a9eff;
    border-color: #4a9eff;
    color: #fff;
}

/* 响应式 */
@media (max-width: 900px) {
    .app-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .app-container .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .app-card {
        flex-direction: column;
        text-align: center;
        padding: 24px;
    }

    .app-btn {
        width: 100%;
        margin-top: 10px;
    }
}

/* 页脚容器 */
.footer {
    background: #f0f0f0;
    padding: 40px 20px;
    text-align: center;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
}

/* 导航链接 */
.footer-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.footer-link {
    font-size: 15px;
    color: #666;
    text-decoration: none;
    padding: 0 20px;
    position: relative;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: #4a9eff;
}

/* 分隔线 */
.footer-link:not(:last-child)::after {
    content: '|';
    position: absolute;
    right: -2px;
    color: #ccc;
}

/* 联系信息 */
.footer-contact {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    margin-bottom: 24px;
    flex-wrap: wrap;
    font-size: 14px;
    color: #888;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.contact-label {
    color: #999;
}

.contact-value {
    color: #666;
}

/* 版权信息 */
.footer-copyright {
    font-size: 13px;
    color: #999;
}

/* 响应式 */
@media (max-width: 768px) {
    .footer-nav {
        gap: 10px;
    }

    .footer-link {
        padding: 8px 16px;
        font-size: 14px;
    }

    .footer-link:not(:last-child)::after {
        display: none;
    }

    .footer-contact {
        flex-direction: column;
        gap: 12px;
    }
}