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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
.header {
    background-color: #fff;
    border-bottom: 1px solid #e5e5e5;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    position: relative;
}

.logo {
    z-index: 1001;
}

.logo img {
    height: 35px;
    width: auto;
}

/* 移动端菜单按钮 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 46px;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
    position: relative;
    border-radius: 4px;
    transition: background 0.3s ease;
    box-sizing: border-box;
}

.mobile-menu-toggle:hover {
    background: rgba(0, 0, 0, 0.05);
}

.mobile-menu-toggle:active {
    background: rgba(0, 0, 0, 0.1);
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: #333;
    border-radius: 3px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center;
}

.mobile-menu-toggle.active span {
    background-color: #000;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(10.5px) rotate(45deg);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-10.5px) rotate(-45deg);
}

/* 移动端菜单遮罩 */
.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s;
    backdrop-filter: blur(2px);
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.nav ul {
    display: flex;
    gap: 40px;
    list-style: none;
}

.nav li {
    flex-shrink: 0;
}

.nav a {
    font-size: 16px;
    color: #333;
    font-weight: 700;
    position: relative;
    display: block;
    padding: 10px 0;
    text-transform: uppercase;
    font-family: "Roboto Condensed", Helvetica, Arial, system-ui, sans-serif !important;
}

.nav a:hover {
    color: #000000;
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #000000;
    transition: width 0.3s ease;
}

.nav a:hover::after {
    width: 100%;
}

/* 搜索图标按钮 */
.nav-item-icon {
    display: flex;
    align-items: center;
    padding: 0 10px;
}

.search-toggle {
    font-size: 16px;
    color: #333;
    padding: 8px 10px;
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.search-toggle:hover {
    color: #000000;
}

.search-toggle .icon {
    width: 20px;
    height: 20px;
    fill: currentColor;
    transition: transform 0.3s ease;
}

.search-toggle:hover .icon {
    transform: scale(1.1);
}

/* 搜索栏 */
.search-bar {
    position: relative;
    background: #fff;
    border-top: 1px solid #e5e5e5;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
                opacity 0.3s ease,
                padding 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.3s ease;
    padding: 0;
    z-index: 999;
}

.search-bar.active {
    max-height: 150px;
    opacity: 1;
    padding: 30px 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.search-wrapper {
    display: flex;
    align-items: center;
    gap: 15px;
    width: 600px;
    margin: 0 auto;
    transform: translateY(-10px);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1) 0.1s;
}

.search-bar.active .search-wrapper {
    transform: translateY(0);
}

.search-input {
    flex: 1;
    padding: 12px 20px;
    border: 2px solid #e5e5e5;
    border-radius: 4px;
    font-size: 15px;
    outline: none;
    transition: all 0.3s ease;
    background: #fff;
}

.search-input:focus {
    border-color: #000000;
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.search-input::placeholder {
    color: #999;
    transition: opacity 0.3s ease;
}

.search-input:focus::placeholder {
    opacity: 0.6;
}

.search-submit-btn {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    background: #1a1a1a;
    border: none;
    border-radius: 4px;
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.search-submit-btn:hover {
    background: #000000;
    transform: scale(1.05);
}

.search-submit-btn .icon {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

/* Hero Banner 轮播 */
.hero-carousel {
    position: relative;
    width: 100%;
    height: 600px;
    overflow: hidden;
    background: #000;
}

.carousel-track {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease-in-out;
}

.carousel-slide.active {
    opacity: 1;
    visibility: visible;
    z-index: 1;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.5));
    display: flex;
    align-items: center;
    z-index: 2;
}

.slide-content {
    color: #fff;
    animation: slideInUp 0.8s ease-out;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-content h2 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 15px;
    line-height: 1.2;
}

.slide-content p {
    font-size: 24px;
    opacity: 0.95;
    font-weight: 300;
}

/* 轮播控制按钮 */
.carousel-control {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s ease;
    opacity: 0.7;
}

.carousel-control:hover {
    opacity: 1;
    transform: translateY(-50%) scale(1.2);
}

.carousel-control svg {
    width: 40px;
    height: 40px;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.carousel-control.prev {
    left: 30px;
}

.carousel-control.next {
    right: 30px;
}

/* 轮播指示器 */
.carousel-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
}

.carousel-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    border: 2px solid rgba(255, 255, 255, 0.8);
    cursor: pointer;
    transition: all 0.3s ease;
}

.carousel-indicator:hover {
    background: rgba(255, 255, 255, 0.8);
    transform: scale(1.2);
}

.carousel-indicator.active {
    background: #fff;
    width: 40px;
    border-radius: 6px;
}

/* 产品区域 */
.product-section {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.section-title-wrapper {
    text-align: center;
    margin-bottom: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    position: relative;
}

.section-title {
    font-size: 22px;
    text-transform: uppercase;
    color: #1a1a1a;
    margin: 0;
    white-space: nowrap;
    font-weight: 200;
    
}

.ci-break-lines-left,
.ci-break-lines-right {
    position: relative;
    width: 475px;
    height: 40px;
    flex-shrink: 0;
}

.ci-break-lines-left::before {
    content: "";
    position: absolute;
    right: 0;
    top: 18px;
    width: 70%;
    height: 1px;
    background-color: #8a8e9180;
}

.ci-break-lines-left::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 13px;
    width: 85%;
    height: 1px;
    background-color: #8a8e9180;
}

.ci-break-lines-right::before {
    content: "";
    position: absolute;
    left: 0;
    top: 18px;
    width: 70%;
    height: 1px;
    background-color: #8a8e9180;
}

.ci-break-lines-right::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 13px;
    width: 85%;
    height: 1px;
    background-color: #8a8e9180;
}
    background-color: #8a8e9180;
    width: 100%;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.product-card {
    background-color: #fff;
    padding: 40px 30px;
    text-align: center;
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.product-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
}

.product-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.product-card h3 {
    font-size: 16px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 15px;
}

.product-card p {
    font-size: 13px;
    color: #666;
    line-height: 1.6;
}

/* 设备展示 */
.product-devices {
    display: none;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.product-devices.active {
    display: grid;
}

.device-item {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.device-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.device-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: #f8f9fa;
}

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

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

.device-info {
    padding: 20px;
    text-align: center;
}

.device-info h4 {
    font-size: 16px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 10px;
}

.device-info p {
    font-size: 13px;
    color: #666;
    line-height: 1.6;
    margin: 0;
}

/* 分页点 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 12px;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: #d0d0d0;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.dot.active {
    background-color: #000000;
}

.dot:hover {
    background-color: #000000;
}

/* Banner网格 */
.banner-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    height: 600px;
    width: 100%;
}

/* 左侧大竖图 */
.banner-left {
    width: 100%;
    height: 600px;
}

/* 右侧2x2网格 */
.banner-right-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 0;
    width: 100%;
    height: 600px;
}

.banner-item {
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

/* 长方形（横向） */
.banner-rect {
    width: 100%;
    height: 100%;
}

/* 正方形 */
.banner-square {
    width: 100%;
    height: 100%;
}

.banner-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.banner-item:hover img {
    transform: scale(1.1);
}

.banner-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    padding: 30px 25px;
    color: #fff;
    z-index: 2;
}

.banner-overlay h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.banner-overlay p {
    font-size: 13px;
    opacity: 0.9;
    line-height: 1.5;
}

/* 视频区域 */
.video-section {
    padding: 80px 0;
    background-color: #fff;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 50px;
}

.video-card {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.video-thumbnail {
    position: relative;
    width: 100%;
    height: 180px;
    background-color: #1a1a1a;
    overflow: hidden;
}

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

.video-card:hover .video-thumbnail img {
    transform: scale(1.05);
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease;
}

.video-card:hover .play-button {
    background-color: #fff;
}

.play-button img {
    width: 24px;
    height: 24px;
}

.video-info {
    padding: 20px;
}

.video-info h4 {
    font-size: 15px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 10px;
    line-height: 1.4;
}

.video-info p {
    font-size: 13px;
    color: #666;
    margin-bottom: 12px;
    line-height: 1.5;
}

.video-date {
    font-size: 12px;
    color: #999;
}

/* 加载更多按钮 */
.load-more {
    text-align: center;
}

.btn-load-more {
    padding: 14px 50px;
    background-color: #1a1a1a;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn-load-more:hover {
    background-color: #333;
}

/* 页脚 */
.footer {
    background-color: #1a1a1a;
    color: #fff;
    padding: 60px 0 30px;
    position: relative;
}

.footer-top {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 60px;
    margin-bottom: 50px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-col {
    display: flex;
    flex-direction: column;
}

.footer-col h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 25px;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-col ul li {
    margin-bottom: 15px;
    line-height: 1.6;
}

.footer-col a {
    font-size: 14px;
    color: #b3b3b3;
    transition: all 0.3s ease;
    display: inline-block;
}

.footer-col a:hover {
    color: #fff;
    padding-left: 5px;
}

/* 社交媒体 */
.footer-social {
    display: flex;
    justify-content: center;
    gap: 25px;
    margin-bottom: 40px;
    padding-bottom: 40px;
}

.social-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #2a2a2a;
    border-radius: 50%;
    transition: background-color 0.3s ease;
}

.social-icon:hover {
    background-color: #000000;
}

.social-icon img {
    width: 20px;
    height: 20px;
}

/* 页脚底部 */
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid #333;
}

.footer-links {
    display: flex;
    gap: 30px;
}

.footer-links a {
    font-size: 12px;
    color: #b3b3b3;
}

.footer-links a:hover {
    color: #fff;
}

.copyright p {
    font-size: 12px;
    color: #666;
}

/* 返回顶部 */
.scroll-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 50px;
    height: 50px;
    background-color: rgba(0, 0, 0, 0.7);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}

.scroll-top.show {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background-color: #000000;
}

.scroll-top img {
    width: 20px;
    height: 20px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-carousel {
        height: 500px;
    }
    
    .slide-content h2 {
        font-size: 38px;
    }
    
    .slide-content p {
        font-size: 20px;
    }
    
    .carousel-control {
        width: 36px;
        height: 36px;
    }
    
    .carousel-control svg {
        width: 36px;
        height: 36px;
    }
    
    .carousel-control.prev {
        left: 20px;
    }
    
    .carousel-control.next {
        right: 20px;
    }
    
    .product-grid,
    .video-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .product-devices {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .banner-grid {
        height: 500px;
    }
    
    .banner-left {
        height: 500px;
    }
    
    .banner-right-grid {
        height: 500px;
    }
    
    .footer-top {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
    
    /* 平板设备导航优化 */
    .nav ul {
        gap: 25px;
    }
    
    .nav a {
        font-size: 14px;
    }
}

@media (max-width: 768px) {
    .section-title-wrapper {
        gap: 20px;
    }
    
    .section-title {
        font-size: 26px;
    }
    
    .ci-break-lines-left,
    .ci-break-lines-right {
        width: 100px;
    }
    
    .header .container {
        height: 60px;
        justify-content: center;
    }
    
    /* 移动端显示菜单按钮 */
    .mobile-menu-toggle {
        display: flex;
        position: absolute;
        right: 20px;
    }
    
    /* 移动端显示遮罩 */
    .mobile-menu-overlay {
        display: block;
    }
    
    .mobile-menu-overlay.active {
        display: block;
    }
    
    /* 移动端logo居中 */
    .logo {
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
    }
    
    /* 移动端导航样式 */
    .nav {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: #fff;
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        visibility: hidden;
        transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                    opacity 0.3s ease,
                    visibility 0.4s;
        box-shadow: 0 8px 16px rgba(0, 0, 0, 0);
        z-index: 999;
    }
    
    .nav.active {
        max-height: calc(100vh - 60px);
        opacity: 1;
        visibility: visible;
        overflow-y: auto;
        box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
        -webkit-overflow-scrolling: touch;
    }
    
    /* 移动端导航项动画 */
    .nav.active ul > li {
        animation: slideInDown 0.4s ease-out backwards;
    }
    
    .nav.active ul > li:nth-child(1) { animation-delay: 0.05s; }
    .nav.active ul > li:nth-child(2) { animation-delay: 0.1s; }
    .nav.active ul > li:nth-child(3) { animation-delay: 0.15s; }
    .nav.active ul > li:nth-child(4) { animation-delay: 0.2s; }
    .nav.active ul > li:nth-child(5) { animation-delay: 0.25s; }
    .nav.active ul > li:nth-child(6) { animation-delay: 0.3s; }
    .nav.active ul > li:nth-child(7) { animation-delay: 0.35s; }
    .nav.active ul > li:nth-child(8) { animation-delay: 0.4s; }
    
    @keyframes slideInDown {
        from {
            opacity: 0;
            transform: translateY(-20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    .nav ul {
        flex-direction: column;
        gap: 0;
        padding: 20px 0;
    }
    
    .nav li {
        width: 100%;
        border-bottom: 1px solid #f0f0f0;
    }
    
    .nav li:last-child {
        border-bottom: none;
    }
    
    .nav a {
        font-size: 16px;
        padding: 15px 20px;
        display: block;
        text-align: left;
        transition: all 0.3s ease;
        background: #fff;
    }
    
    .nav a:hover {
        background: #f8f9fa;
        padding-left: 25px;
        color: #000;
    }
    
    .nav a::after {
        display: none;
    }
    
    /* 移动端搜索图标 */
    .nav-item-icon {
        padding: 0;
        border-bottom: none;
        margin-top: 10px;
    }
    
    .search-toggle {
        width: 100%;
        padding: 15px 20px;
        justify-content: flex-start;
        gap: 10px;
        background: transparent;
        transition: all 0.3s ease;
    }
    
    .search-toggle:hover {
        background: #f8f9fa;
        padding-left: 25px;
    }
    
    .search-toggle::after {
        content: 'Search';
        font-size: 16px;
        color: #333;
        font-weight: 700;
        text-transform: uppercase;
        font-family: "Roboto Condensed", Helvetica, Arial, system-ui, sans-serif !important;
    }
    
    /* 移动端二级菜单 */
    .nav ul li .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: #f8f9fa;
        padding: 0;
        margin: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .nav ul li.submenu-open .sub-menu {
        max-height: 500px;
    }
    
    .nav ul li .sub-menu a {
        padding: 12px 20px 12px 40px;
        font-size: 14px;
    }
    
    .nav ul li .sub-menu a:hover {
        background: #e9ecef;
        padding-left: 45px;
    }
    
    /* 移动端有子菜单的项添加指示器 */
    .nav ul li.menu-item-has-children > a {
        position: relative;
        padding-right: 50px;
    }
    
    .nav ul li.menu-item-has-children > a::before {
        content: '';
        position: absolute;
        right: 20px;
        top: 50%;
        transform: translateY(-50%);
        width: 0;
        height: 0;
        border-left: 5px solid transparent;
        border-right: 5px solid transparent;
        border-top: 6px solid #333;
        transition: transform 0.3s ease;
    }
    
    .nav ul li.menu-item-has-children.submenu-open > a::before {
        transform: translateY(-50%) rotate(180deg);
    }
    
    /* 搜索栏移动端优化 */
    .search-bar {
        top: 60px;
    }
    
    .search-wrapper {
        width: 100%;
        padding: 0 20px;
    }
    
    /* 移动端导航滚动条样式 */
    .nav.active::-webkit-scrollbar {
        width: 6px;
    }
    
    .nav.active::-webkit-scrollbar-track {
        background: #f1f1f1;
    }
    
    .nav.active::-webkit-scrollbar-thumb {
        background: #888;
        border-radius: 3px;
    }
    
    .nav.active::-webkit-scrollbar-thumb:hover {
        background: #555;
    }
    
    .hero-carousel {
        height: 400px;
    }
    
    .slide-content h2 {
        font-size: 28px;
        margin-bottom: 10px;
    }
    
    .slide-content p {
        font-size: 16px;
    }
    
    .carousel-control {
        width: 32px;
        height: 32px;
    }
    
    .carousel-control svg {
        width: 32px;
        height: 32px;
    }
    
    .carousel-control.prev {
        left: 15px;
    }
    
    .carousel-control.next {
        right: 15px;
    }
    
    .carousel-indicators {
        bottom: 20px;
        gap: 10px;
    }
    
    .carousel-indicator {
        width: 10px;
        height: 10px;
    }
    
    .carousel-indicator.active {
        width: 30px;
    }
    
    .product-grid,
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .product-devices {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .device-image {
        height: 180px;
    }
    
    .banner-grid {
        grid-template-columns: 1fr;
        height: auto;
        gap: 0;
    }
    
    .banner-left {
        height: 400px;
    }
    
    .banner-right-grid {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: 200px 200px;
        height: 400px;
        gap: 0;
    }
    
    .footer-top {
        grid-template-columns: 1fr;
        gap: 35px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .product-grid,
    .video-grid,
    .product-devices {
        grid-template-columns: 1fr;
    }
    
    .device-image {
        height: 160px;
    }
    
    .device-info h4 {
        font-size: 15px;
    }
    
    .device-info p {
        font-size: 12px;
    }
    
    .banner-left {
        height: 300px;
    }
    
    .banner-right-grid {
        grid-template-rows: 150px 150px;
        height: 300px;
    }
    
    .section-title {
        font-size: 20px;
    }
    
    .ci-break-lines-left,
    .ci-break-lines-right {
        width: 60px;
    }
    
    .hero-carousel {
        height: 300px;
    }
    
    .slide-content h2 {
        font-size: 22px;
    }
    
    .slide-content p {
        font-size: 14px;
    }
    
    .carousel-control {
        width: 36px;
        height: 36px;
    }
    
    .carousel-control svg {
        width: 18px;
        height: 18px;
    }
    
    .carousel-control.prev {
        left: 10px;
    }
    
    .carousel-control.next {
        right: 10px;
    }
    
    /* 移动端导航优化 */
    .header .container {
        padding: 0 15px;
    }
    
    .mobile-menu-toggle {
        right: 15px;
    }
    
    .logo img {
        height: 30px;
    }
    
    .nav a {
        font-size: 15px;
        padding: 14px 15px;
    }
    
    .nav ul li .sub-menu a {
        padding: 10px 15px 10px 35px;
        font-size: 13px;
    }
    
    .search-wrapper {
        padding: 0 15px;
    }
}

/* 搜索结果页 */
.search-results-section {
    padding: 0 0 80px;
    background: #f8f9fa;
}

/* 搜索头部区域 */
.search-hero {
    background: #fff;
    padding: 60px 0 80px;
    color: #000;
    position: relative;
    overflow: hidden;
}

.search-hero-content {
    text-align: center;
    margin-bottom: 40px;
    position: relative;
    z-index: 1;
}

.search-title {
    font-size: 48px;
    font-weight: 700;
    color: #000;
    margin-bottom: 15px;
}

.search-query {
    font-size: 18px;
    color: #666;
    line-height: 1.6;
}

.search-query strong {
    color: #000;
    font-weight: 600;
}

.search-count {
    display: inline-block;
    margin-left: 10px;
    opacity: 0.8;
}

/* 现代搜索表单 */
.search-form-wrapper {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.search-form-modern {
    background: #fff;
    border-radius: 50px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
    overflow: hidden;
}

.search-input-group {
    display: flex;
    align-items: center;
    padding: 8px 8px 8px 25px;
}

.search-icon {
    flex-shrink: 0;
    color: #999;
    margin-right: 12px;
}

.search-field-modern {
    flex: 1;
    border: none;
    outline: none;
    padding: 12px 15px;
    font-size: 16px;
    color: #333;
    background: transparent;
}

.search-field-modern::placeholder {
    color: #999;
}

.search-btn-modern {
    flex-shrink: 0;
    padding: 14px 35px;
    background: #000;
    color: #fff;
    border: none;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.search-btn-modern:hover {
    background: #333;
    transform: translateY(-2px);
}

.search-btn-modern:active {
    transform: translateY(0);
}

/* 搜索结果网格 */
.search-results-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin: -40px 0 50px;
    position: relative;
    z-index: 2;
}

.search-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.search-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.15);
}

.search-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.search-card-image {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
    background: linear-gradient(135deg, #f5f7fa 0%, #d4d4d4 100%);
}

.search-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.search-card:hover .search-card-image img {
    transform: scale(1.1);
}

.search-card-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.6);
}

.search-card-overlay {
    position: absolute;
    top: 15px;
    left: 15px;
}

.card-category {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(1, 1, 1, 0.95);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: 20px;
}

.search-card-body {
    padding: 25px;
}

.card-meta {
    margin-bottom: 12px;
}

.card-date {
    font-size: 12px;
    color: #999;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-title {
    font-size: 20px;
    font-weight: 700;
    color: #000;
    margin-bottom: 12px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-excerpt {
    font-size: 14px;
    line-height: 1.6;
    color: #666;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-read-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: #667eea;
    transition: all 0.3s ease;
}

.search-card:hover .card-read-more {
    gap: 10px;
    color: #764ba2;
}

.card-read-more svg {
    transition: transform 0.3s ease;
}

.search-card:hover .card-read-more svg {
    transform: translateX(3px);
}

.no-results {
    text-align: center;
    padding: 80px 20px;
}

.no-results-icon {
    margin-bottom: 30px;
    color: #ccc;
}

.no-results h3 {
    font-size: 28px;
    font-weight: 700;
    color: #000;
    margin-bottom: 15px;
}

.no-results p {
    font-size: 16px;
    color: #666;
    margin-bottom: 40px;
}

.suggested-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    max-width: 600px;
    margin: 0 auto;
}

.category-tag {
    display: inline-block;
    padding: 10px 20px;
    background: #f5f5f5;
    border-radius: 25px;
    font-size: 14px;
    color: #333;
    text-decoration: none;
    transition: all 0.3s ease;
}

.category-tag:hover {
    background: #e31e24;
    color: #fff;
}

/* 搜索页响应式 */
@media (max-width: 992px) {
    .search-results-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .search-title {
        font-size: 36px;
    }
}

@media (max-width: 768px) {
    .search-hero {
        padding: 40px 0 60px;
    }
    
    .search-title {
        font-size: 28px;
    }
    
    .search-query {
        font-size: 16px;
    }
    
    .search-results-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-top: -30px;
    }
    
    .search-input-group {
        flex-wrap: wrap;
        padding: 10px;
    }
    
    .search-field-modern {
        width: 100%;
        margin-bottom: 10px;
    }
    
    .search-btn-modern {
        width: 100%;
    }
}

/* About Us 单页 */
.about-page-section {
    padding: 30px 0 80px;
}

.page-header-simple {
    text-align: center;
    padding: 40px 0 50px;
}

.page-title-large {
    font-size: 48px;
    font-weight: 700;
    color: #000;
    line-height: 1.2;
}

.page-content-wide {
    max-width: 1000px;
    margin: 0 auto;
    font-size: 16px;
    line-height: 1.8;
    color: #333;
}

.page-content-wide h2 {
    font-size: 32px;
    font-weight: 700;
    color: #000;
    margin: 50px 0 25px;
    padding-bottom: 15px;
    border-bottom: 3px solid #e31e24;
}

.page-content-wide h3 {
    font-size: 24px;
    font-weight: 600;
    color: #000;
    margin: 35px 0 20px;
}

.page-content-wide p {
    margin-bottom: 20px;
}

.page-content-wide img {
    max-width: 100%;
    height: auto;
    margin: 30px 0;
    border-radius: 4px;
}

.page-content-wide ul,
.page-content-wide ol {
    margin: 20px 0;
    padding-left: 30px;
}

.page-content-wide li {
    margin-bottom: 10px;
}

/* News 列表页 */
.news-list-section {
    padding: 30px 0 80px;
}

.news-list-section .section-title-wrapper {
    margin: 40px 0 50px;
}

.news-list-section .video-grid {
    margin-bottom: 50px;
}

/* 面包屑导航 */
.breadcrumb {
    padding: 20px 0;
    font-size: 14px;
    color: #666;
    margin-bottom: 30px;
    text-transform: uppercase;
}

.breadcrumb a {
    color: #333;
    text-decoration: none;
    transition: color 0.3s ease;
}

.breadcrumb a:hover {
    color: #000000;
}

.breadcrumb .separator {
    margin: 0 10px;
    color: #999;
}



/* 产品列表页 */
.product-list-section {
    padding: 50px 0;
    min-height: 500px;
}

.product-list-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.product-list-item {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    display: block;
    text-decoration: none;
    color: inherit;
}

.product-list-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.product-list-image {
    width: 100%;
    height: 220px;
    overflow: hidden;
    background: #f5f5f5;
}

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

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

.product-list-info {
    padding: 20px;
}

.product-list-info h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}

.product-list-info p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-list-info .read-more {
    font-size: 14px;
    color: #000000;
    font-weight: 500;
}

.no-products {
    text-align: center;
    padding: 80px 20px;
    color: #999;
    font-size: 16px;
}

/* 分页样式 */
.pagination-wrapper {
    margin-top: 50px;
    display: flex;
    justify-content: center;
}

.pagination-links ul {
    display: flex;
    gap: 10px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.pagination-links li {
    display: inline-block;
}

.pagination-links a,
.pagination-links .current {
    display: block;
    padding: 10px 16px;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 4px;
    color: #333;
    text-decoration: none;
    transition: all 0.3s ease;
}

.pagination-links a:hover {
    background: #000000;
    color: #fff;
    border-color: #000000;
}

.pagination-links .current {
    background: #000000;
    color: #fff;
    border-color: #000000;
}

/* 产品详情页 */
.product-detail-section {
    padding: 30px 0 80px;
    background: #fff;
}

/* 产品标题区域 */
.product-header {
    text-align: center;
    padding: 40px 0 50px;
    max-width: 900px;
    margin: 0 auto;
}

.product-main-title {
    font-size: 48px;
    font-weight: 700;
    color: #000;
    margin-bottom: 20px;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

.product-subtitle {
    font-size: 18px;
    line-height: 1.6;
    color: #666;
    max-width: 800px;
    margin: 0 auto;
}

/* 产品图片 */
.product-gallery {
    margin: 50px 0;
    background: #f8f9fa;
    border-radius: 8px;
    overflow: hidden;
}

.gallery-main {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 500px;
    background: #fff;
}

.gallery-main img {
    width: 100%;
    height: auto;
    max-height: 600px;
    object-fit: contain;
}

/* 产品亮点 */
.product-highlights {
    margin: 60px 0;
}

.section-heading {
    font-size: 32px;
    font-weight: 700;
    color: #000;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 3px solid #e31e24;
    position: relative;
}

.section-heading::before {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 80px;
    height: 3px;
    background: #000;
}

.highlights-content {
    font-size: 16px;
    line-height: 1.8;
    color: #333;
}

.highlights-content ul {
    list-style: none;
    padding: 0;
}

.highlights-content ul li {
    padding: 15px 0;
    padding-left: 30px;
    position: relative;
    border-bottom: 1px solid #e5e5e5;
}

.highlights-content ul li:before {
    content: '●';
    position: absolute;
    left: 0;
    color: #e31e24;
    font-size: 20px;
}

.highlights-content img {
    max-width: 100%;
    height: auto;
    margin: 30px 0;
    border-radius: 4px;
}

.highlights-content p {
    margin-bottom: 20px;
}

.highlights-content h3 {
    font-size: 24px;
    font-weight: 600;
    margin: 40px 0 20px;
    color: #000;
}

/* 技术参数 */
.product-specifications {
    margin: 60px 0;
    background: #f8f9fa;
    padding: 50px;
    border-radius: 8px;
}

.specifications-table {
    background: #fff;
    border-radius: 4px;
    padding: 30px;
}

.specifications-table table {
    width: 100%;
    border-collapse: collapse;
}

.specifications-table th,
.specifications-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid #e5e5e5;
}

.specifications-table th {
    background: #f8f9fa;
    font-weight: 600;
    color: #000;
}

.specifications-table td {
    color: #666;
}

/* 相关产品 */
.related-products {
    margin: 80px 0 60px;
}

.related-products .section-title {
    font-size: 32px;
    font-weight: 700;
    color: #000;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 3px solid #e31e24;
    position: relative;
}

.related-products .section-title::before {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 80px;
    height: 3px;
    background: #000;
}

.related-products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.related-product-item {
    background: #fff;
    border: 1px solid #e5e5e5;
    border-radius: 4px;
    overflow: hidden;
    transition: all 0.3s ease;
    display: block;
    text-decoration: none;
    color: inherit;
}

.related-product-item:hover {
    border-color: #e31e24;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.related-product-image {
    width: 100%;
    height: 220px;
    overflow: hidden;
    background: #f8f9fa;
    display: flex;
    align-items: center;
    justify-content: center;
}

.related-product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.3s ease;
    padding: 20px;
}

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

.related-product-info {
    padding: 20px;
    background: #fff;
}

.related-product-info h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #000;
    line-height: 1.3;
}

.related-product-info p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* Previous/Next Navigation */
.post-navigation {
    display: flex;
    justify-content: space-between;
    gap: 30px;
    margin-top: 60px;
    padding-top: 40px;
    border-top: 2px solid #e5e5e5;
}

.post-navigation .nav-link {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 25px 30px;
    background: #fff;
    border: 2px solid #e5e5e5;
    border-radius: 4px;
    text-decoration: none;
    color: #333;
    transition: all 0.3s ease;
    flex: 1;
    max-width: 48%;
}

.post-navigation .nav-link:hover {
    border-color: #e31e24;
    background: #f8f9fa;
    transform: translateX(0);
}

.post-navigation .nav-prev:hover {
    transform: translateX(-5px);
}

.post-navigation .nav-next:hover {
    transform: translateX(5px);
}

.post-navigation .nav-arrow {
    font-size: 28px;
    font-weight: 300;
    color: #999;
    transition: color 0.3s ease;
    flex-shrink: 0;
}

.post-navigation .nav-link:hover .nav-arrow {
    color: #e31e24;
}

.post-navigation .nav-content {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.post-navigation .nav-prev .nav-content {
    align-items: flex-start;
}

.post-navigation .nav-next .nav-content {
    align-items: flex-end;
    text-align: right;
}

.post-navigation .nav-label {
    font-size: 12px;
    color: #999;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.post-navigation .nav-title {
    font-size: 16px;
    font-weight: 600;
    color: #000;
    line-height: 1.4;
}

.post-navigation .nav-placeholder {
    flex: 1;
    max-width: 48%;
}

/* Solutions 详情页 */
.solution-detail-section {
    padding: 30px 0 80px;
    background: #fff;
}

.solution-header {
    text-align: center;
    padding: 40px 0 50px;
    max-width: 900px;
    margin: 0 auto;
}

.solution-main-title {
    font-size: 48px;
    font-weight: 700;
    color: #000;
    margin-bottom: 20px;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

.solution-subtitle {
    font-size: 18px;
    line-height: 1.6;
    color: #666;
    max-width: 800px;
    margin: 0 auto;
}

.solution-hero-image {
    margin: 50px 0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.solution-hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

.solution-content {
    font-size: 16px;
    line-height: 1.8;
    color: #333;
    margin: 60px 0;
}

.solution-content h2 {
    font-size: 32px;
    font-weight: 700;
    color: #000;
    margin: 50px 0 30px;
    padding-bottom: 20px;
    border-bottom: 3px solid #e31e24;
    position: relative;
}

.solution-content h2::before {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 80px;
    height: 3px;
    background: #000;
}

.solution-content h3 {
    font-size: 24px;
    font-weight: 600;
    color: #000;
    margin: 40px 0 20px;
}

.solution-content p {
    margin-bottom: 20px;
}

.solution-content img {
    max-width: 100%;
    height: auto;
    margin: 30px 0;
    border-radius: 4px;
}

.solution-content ul {
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.solution-content ul li {
    padding: 12px 0 12px 30px;
    position: relative;
    border-bottom: 1px solid #e5e5e5;
}

.solution-content ul li:before {
    content: '●';
    position: absolute;
    left: 0;
    color: #e31e24;
    font-size: 18px;
}

/* 相关解决方案 */
.related-solutions {
    margin: 80px 0 60px;
}

.related-solutions .section-title {
    font-size: 32px;
    font-weight: 700;
    color: #000;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 3px solid #e31e24;
    position: relative;
}

.related-solutions .section-title::before {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 80px;
    height: 3px;
    background: #000;
}

.related-solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.related-solution-item {
    position: relative;
    border-radius: 4px;
    overflow: hidden;
    display: block;
    text-decoration: none;
    color: inherit;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.related-solution-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.related-solution-image {
    width: 100%;
    height: 300px;
    overflow: hidden;
}

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

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

.related-solution-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    padding: 30px 20px 20px;
    color: #fff;
}

.related-solution-overlay h4 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.3;
}

.related-solution-overlay p {
    font-size: 14px;
    line-height: 1.5;
    opacity: 0.9;
}

/* News 详情页 */
.news-detail-section {
    padding: 30px 0 80px;
    background: #fff;
}

.news-header {
    max-width: 900px;
    margin: 40px auto 50px;
    text-align: center;
}

.news-main-title {
    font-size: 42px;
    font-weight: 700;
    color: #000;
    margin-bottom: 25px;
    line-height: 1.3;
}

.news-meta {
    display: flex;
    justify-content: center;
    gap: 30px;
    font-size: 14px;
    color: #666;
}

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

.news-meta svg {
    opacity: 0.7;
}

.news-featured-image {
    margin: 50px 0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.news-featured-image img {
    width: 100%;
    height: auto;
    display: block;
}

.news-content {
    max-width: 800px;
    margin: 60px auto;
    font-size: 17px;
    line-height: 1.8;
    color: #333;
}

.news-content h2 {
    font-size: 28px;
    font-weight: 700;
    color: #000;
    margin: 40px 0 20px;
}

.news-content h3 {
    font-size: 22px;
    font-weight: 600;
    color: #000;
    margin: 30px 0 15px;
}

.news-content p {
    margin-bottom: 20px;
}

.news-content img {
    max-width: 100%;
    height: auto;
    margin: 30px 0;
    border-radius: 4px;
}

.news-content blockquote {
    border-left: 4px solid #e31e24;
    padding-left: 20px;
    margin: 30px 0;
    font-style: italic;
    color: #666;
}

.news-content ul,
.news-content ol {
    margin: 20px 0;
    padding-left: 30px;
}

.news-content li {
    margin-bottom: 10px;
}

/* 新闻标签 */
.news-tags {
    max-width: 800px;
    margin: 40px auto;
    padding-top: 30px;
    border-top: 1px solid #e5e5e5;
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.news-tags .tags-label {
    font-weight: 600;
    color: #000;
}

.news-tags a {
    display: inline-block;
    padding: 6px 15px;
    background: #f5f5f5;
    border-radius: 20px;
    font-size: 13px;
    color: #666;
    text-decoration: none;
    transition: all 0.3s ease;
}

.news-tags a:hover {
    background: #e31e24;
    color: #fff;
}

/* 相关新闻 */
.related-news {
    margin: 80px 0 60px;
}

.related-news .section-title {
    font-size: 32px;
    font-weight: 700;
    color: #000;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 3px solid #e31e24;
    position: relative;
}

.related-news .section-title::before {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 80px;
    height: 3px;
    background: #000;
}

.related-news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.related-news-item {
    background: #fff;
    border: 1px solid #e5e5e5;
    border-radius: 4px;
    overflow: hidden;
    transition: all 0.3s ease;
    display: block;
    text-decoration: none;
    color: inherit;
}

.related-news-item:hover {
    border-color: #e31e24;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    transform: translateY(-5px);
}

.related-news-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: #f8f9fa;
}

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

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

.related-news-info {
    padding: 20px;
}

.related-news-date {
    display: block;
    font-size: 12px;
    color: #999;
    margin-bottom: 10px;
}

.related-news-info h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #000;
    line-height: 1.4;
}

.related-news-info p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* 响应式 */
@media (max-width: 992px) {
    .product-detail-wrapper {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .related-products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .related-solutions-grid,
    .related-news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .solution-main-title,
    .product-main-title,
    .news-main-title {
        font-size: 36px;
    }
}

@media (max-width: 576px) {
    .product-title,
    .solution-main-title,
    .product-main-title,
    .news-main-title {
        font-size: 24px;
    }
    
    .related-products-grid,
    .related-solutions-grid,
    .related-news-grid {
        grid-template-columns: 1fr;
    }
    
    .post-navigation {
        flex-direction: column;
    }
    
    .post-navigation .nav-link,
    .post-navigation .nav-placeholder {
        max-width: 100%;
    }
}

/* 二级菜单样式 */
.nav ul li {
    position: relative;
}
.sub-menu {gap:10px !important;}

/* 桌面端二级菜单 */
@media (min-width: 769px) {
    .nav ul li .sub-menu {
        position: absolute;
        top: 100%;
        left: 0;
        min-width: 320px;
        background: #fff;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        padding: 10px 0;
        margin-top: 0;
        z-index: 999;
    }

    .nav ul li:hover .sub-menu {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .nav ul li .sub-menu li {
        display: block;
        padding: 0;
    }

    .nav ul li .sub-menu a {
        padding: 12px 20px;
        font-size: 14px;
        font-weight: 400;
        text-transform: none;
        display: block;
        transition: all 0.3s ease;
    }

    .nav ul li .sub-menu a:hover {
        background: #f5f5f5;
        padding-left: 25px;
    }

    .nav ul li .sub-menu a::after {
        display: none;
    }
}