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

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    font-size: 14px;
    color: #333;
    line-height: 1.5;
    overflow-x: hidden;
}

ul, ol {
    list-style: none;
}

a {
    text-decoration: none;
    color: #333;
}

.flexed {
    display: flex;
}

.justify-between {
    justify-content: space-between;
}

.align-center {
    align-items: center;
}

/* 宽度容器 */
.w1800 {
    width: 100%;
    max-width: 1920px;
    margin: 0 auto;
}

.w1480 {
    width: 100%;
    max-width: 1550px;
    margin: 0 auto;
}

/* 搜索弹窗 */
.search-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    z-index: 10000;
    display: none;
    justify-content: center;
    align-items: center;
}

.search-modal.active {
    display: flex;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.search-modal-content {
    width: 100%;
    max-width: 800px;
    padding: 40px 20px;
    text-align: center;
}

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

.search-modal-header h3 {
    font-size: 24px;
    color: #333;
    font-weight: normal;
    margin: 0;
}

.search-subtitle {
    color: #ff6600;
    font-weight: normal;
}

.search-close {
    background: none;
    border: none;
    font-size: 30px;
    color: #333;
    cursor: pointer;
    padding: 0;
    margin: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-modal-body {
    position: relative;
}

.search-form {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-input {
    width: 100%;
    max-width: 600px;
    height: 50px;
    padding: 0 20px;
    border: none;
    border-bottom: 1px solid #ccc;
    font-size: 16px;
    outline: none;
}

.search-input::placeholder {
    color: #999;
}

.search-button {
    position: absolute;
    right: 100px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 18px;
    color: #333;
    padding: 0;
}

/* 顶部信息栏 */
.top-info {
    background-color: #f5f5f5;
    padding: 5px 0;
    border-bottom: 1px solid #e0e0e0;
}

.company-name {
    font-size: 14px;
    font-weight: normal;
    color: #333;
}

.top-links {
    gap: 10px;
}

.hotline {
    color: #333;
    font-size: 14px;
}

.separator {
    color: #999;
    font-size: 14px;
}

.top-link {
    color: #333;
    font-size: 14px;
    transition: color 0.3s ease;
}

.top-link:hover {
    color: #ff6600;
}

/* 主导航栏 */
.main-header {
    padding: 10px 0;
    position: relative;
    background-image: url(../picture/beijingtop1.png);
}

.logo {
    flex-shrink: 0;
    margin-right: 10px;
}

.shantui-logo {
    display: flex;
    flex-direction: column;
    padding: 10px;
}
.shantui-logo img {
    max-width: 100%;
    height: auto;
    display: block;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
    transition: all 0.3s ease;
}

.shantui-logo:hover img {
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
    transform: scale(1.02);
}

.shantui-text {
    font-size: 20px;
    font-weight: bold;
    color: #000;
    font-family: Arial, sans-serif;
}

.shantui-text:before {
    content: '🔧';
    display: inline-block;
    margin-right: 10px;
    vertical-align: middle;
}

.sdi-text {
    font-size: 12px;
    color: #666;
    margin-top: 2px;
    font-family: Arial, sans-serif;
}

.nav-menu {
    display: flex;
    align-items: center;
    justify-content: center;
}

.hot-tag {
    background-color: #ff0000;
    color: #fff;
    padding: 2px 6px;
    font-size: 12px;
    font-weight: bold;
    border-radius: 2px;
    margin-left: 10px;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 15px;
}

.main-nav li a {
    color: #000;
    font-size: 16px;
    font-weight: normal;
    position: relative;
    padding: 10px 15px;
    transition: color 0.3s ease;
    display: inline-block;
    font-weight: bold;
}

.main-nav li a:hover {
    color: #fff;
}

/* 下三角图标 */
.main-nav li.dropdown > a::after {
    content: '▼';
    font-size: 10px;
    margin-left: 5px;
    vertical-align: middle;
}

/* 下拉菜单 */
.dropdown {
    position: relative;
}

.submenu {
    position: absolute;
    top: calc(100% + 2px);
    left: 0;
    background-color: #fff;
    border: 1px solid #e0e0e0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    min-width: 180px;
    padding: 10px 0;
    display: none;
    z-index: 999;
}

/* 正三角 */
.submenu::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 20px;
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 8px solid #fff;
}

.submenu::after {
    content: '';
    position: absolute;
    top: -9px;
    left: 20px;
    width: 0;
    height: 0;
    border-left: 9px solid transparent;
    border-right: 9px solid transparent;
    border-bottom: 9px solid #e0e0e0;
    z-index: -1;
}

.dropdown:hover .submenu {
    display: block;
}

.submenu li {
    border-bottom: 1px solid #f0f0f0;
}

.submenu li:last-child {
    border-bottom: none;
}

.submenu li a {
    display: block;
    padding: 10px 20px;
    color: #333;
    font-size: 14px;
    font-weight: normal;
    transition: all 0.3s ease;
}

.submenu li a:hover {
    background-color: #f5f5f5;
    color: #ff6600;
    padding-left: 25px;
}

.phone-info {
    display: flex;
    align-items: center;
    gap: 5px;
    margin-left: 30px;
    font-size: 16px;
    font-weight: bold;
    color: #000;
}

.phone-icon {
    font-size: 18px;
}

.search-icon {
    margin-left: 40px;
}

.search-icon a {
    color: #000;
    font-size: 18px;
    transition: color 0.3s ease;
}

.search-icon a:hover {
    color: #fff;
}

.header-right {
    display: flex;
    align-items: center;
    height: 50px;
    margin-right: 30px;
}

.phone-section {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-right: 15px;
}

.phone-icon {
    font-size: 30px;
    color: #ff0000;
}

.phone-number {
    font-size: 38px;
    font-weight: bold;
    color: #ff0000;
    font-family: Arial, sans-serif;
}

.search-icon {
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-icon:hover {
    opacity: 0.8;
}

.search-icon a {
    color: #000;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-icon img {
    width: 32px;
    height: 32px;
    transition: all 0.3s ease;
}

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

/* 手机头部 */
.xymob-head {
    display: none;
    background-color: #ffcc00;
    padding: 15px 20px;
    position: relative;
}

.xymob-head-box {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.xymob-logo {
    font-size: 18px;
    font-weight: bold;
    color: #000;
    font-family: Arial, sans-serif;
}

.xymob-logo:before {
    content: '';
    display: inline-block;
    width: 15px;
    height: 15px;
    background-color: #ff0000;
    margin-right: 5px;
    vertical-align: middle;
}

.xymob-navbtn {
    cursor: pointer;
    width: 30px;
    height: 20px;
    position: relative;
}

.xymob-navbtn span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: #333;
    position: absolute;
    transition: all 0.3s ease;
}

.xymob-navbtn span:nth-child(1) {
    top: 0;
}

.xymob-navbtn span:nth-child(2) {
    top: 9px;
}

.xymob-navbtn span:nth-child(3) {
    bottom: 0;
}

.xymob-navbtn.active span:nth-child(1) {
    transform: rotate(45deg);
    top: 9px;
}

.xymob-navbtn.active span:nth-child(2) {
    opacity: 0;
}

.xymob-navbtn.active span:nth-child(3) {
    transform: rotate(-45deg);
    bottom: 9px;
}

.xymob-menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: #ffcc00;
    display: none;
    z-index: 999;
}

.xymob-menu.active {
    display: block;
}

.xymob-menu-box {
    padding: 20px;
}

.xymob-nav li {
    margin-bottom: 15px;
}

.xymob-nav li a {
    color: #333;
    font-size: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.xymob-menu-jt {
    cursor: pointer;
}

.xymob-search {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.8);
    display: none;
    z-index: 9999;
}

.xymob-search.active {
    display: flex;
    flex-direction: column;
}

.xymob-search-close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
}

.xymob-search-box {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 20px;
}

.xymob-search-box input {
    width: 100%;
    max-width: 500px;
    height: 50px;
    padding: 0 20px;
    font-size: 16px;
    border: none;
    border-radius: 25px;
}

.xymob-search-box button {
    position: absolute;
    right: 20px;
    background: none;
    border: none;
    color: #999;
    font-size: 18px;
    cursor: pointer;
}

.xymob-seaerch-wz {
    text-align: center;
    padding: 20px;
}

.xymob-seaerch-wz span {
    color: #fff;
    font-size: 14px;
}

/* 轮播图 */
.banner {
    position: relative;
    height: 600px;
    overflow: hidden;
    background-color: #f9f9f9;
}

.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.banner-slide.active {
    opacity: 1;
}

.banner-content {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f9f9f9;
    background-image: url('https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=white%20technical%20background%2C%20modern%20industrial%20design%2C%20clean%20lines&image_size=landscape_16_9');
    background-size: cover;
    background-position: center;
}

.banner-text {
    max-width: 100%;
    text-align: center;
    width: 100%;
}

.banner-subtitle {
    font-size: 18px;
    color: #333;
    margin-bottom: 10px;
}

.banner-text h1 {
    font-size: 48px;
    font-weight: bold;
    color: #333;
    margin-bottom: 20px;
}

.banner-tagline {
    font-size: 18px;
    color: #666;
    margin-bottom: 40px;
    position: relative;
    display: inline-block;
}

.banner-tagline::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #333;
}

.banner-image {
    margin: 40px 0;
}

.banner-image img {
    max-width: 800px;
    height: auto;
}

.banner-scroll {
    display: inline-block;
    color: #666;
    font-size: 14px;
    margin-top: 40px;
    transition: all 0.3s ease;
}

.banner-scroll:hover {
    color: #333;
}

.online-service {
    position: absolute;
    bottom: 30px;
    right: 30px;
}

.service-btn {
    display: block;
    background-color: #ff0000;
    color: #fff;
    padding: 15px 20px;
    font-size: 16px;
    font-weight: 500;
    text-align: center;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.service-btn:hover {
    background-color: #cc0000;
    transform: translateY(-2px);
}

/* 轮播图 */
.banner {
    position: relative;
    height: 700px;
    overflow: hidden;
}

.banner-slides {
    position: relative;
    height: 100%;
}

.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease;
}

.banner-slide.active {
    opacity: 1;
}

.banner-content {
    position: relative;
    height: 100%;
}

.banner-content img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.banner-text {
    position: absolute;
    top: 50%;
    right: 10%;
    transform: translateY(-50%);
    text-align: right;
    z-index: 10;
}

.banner-text h2 {
    font-size: 36px;
    color: #fff;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.banner-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.ai-badge {
    background-color: #ff6600;
    color: #fff;
    padding: 5px 10px;
    font-size: 18px;
    font-weight: bold;
    border-radius: 4px;
}

.zhijia-badge {
    background-color: #000;
    color: #fff;
    padding: 5px 10px;
    font-size: 16px;
    border-radius: 4px;
}

.ssc-badge {
    background-color: #000;
    color: #fff;
    padding: 5px 10px;
    font-size: 16px;
    border-radius: 4px;
}

/* 轮播控制 */
.banner-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 20;
}

.banner-arrows {
    position: absolute;
    top: -350px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    padding: 0 30px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.banner:hover .banner-arrows {
    opacity: 1;
}

.banner-prev, .banner-next {
    width: 50px;
    height: 50px;
    background-color: rgba(255, 255, 255, 0.8);
    border: none;
    border-radius: 50%;
    font-size: 24px;
    color: #333;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.banner-prev:hover, .banner-next:hover {
    background-color: #fff;
    transform: scale(1.1);
}

.banner-indicators {
    position: absolute;
    bottom: 30px;
    right: 30px;
    display: flex;
    align-items: center;
    gap: 15px;
    background-color: rgba(0, 0, 0, 0.5);
    padding: 10px 20px;
    border-radius: 20px;
}

.indicator-dots {
    display: flex;
    gap: 8px;
}

.indicator-dot {
    width: 8px;
    height: 8px;
    background-color: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator-dot.active {
    background-color: #fff;
    transform: scale(1.2);
}

.banner-play-pause {
    background: none;
    border: none;
    color: #fff;
    font-size: 14px;
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
}

.play-icon {
    display: none;
}

.pause-icon {
    display: block;
}

.banner-play-pause.paused .play-icon {
    display: block;
}

.banner-play-pause.paused .pause-icon {
    display: none;
}

/* 向下滚动 */
.banner-scroll {
    position: absolute;
    bottom: 40px;
    left: 30px;
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    z-index: 10;
    animation: bounce 2s infinite;
}

.banner-scroll span {
    font-size: 14px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.scroll-icon {
    font-size: 24px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* 在线咨询 */
.online-service {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
}

.service-btn {
    display: block;
    background-color: #ff6600;
    color: #fff;
    padding: 15px 20px;
    border-radius: 5px;
    text-decoration: none;
    font-size: 16px;
    font-weight: bold;
    transition: all 0.3s ease;
}

.service-btn:hover {
    background-color: #e55a00;
    transform: translateX(-10px);
}

/* 产品系列 */
.product-series {
    padding: 60px 0;
    background-color: #f9f9f9;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
}

.section-title h2 {
    font-size: 32px;
    font-weight: bold;
    color: #333;
    margin-bottom: 15px;
}

.section-title p {
    font-size: 16px;
    color: #666;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.product-item {
    background-color: #fff;
    padding: 30px;
    text-align: center;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.product-item:hover {
    background-color: #333;
    transform: translateY(-10px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.product-item:hover h4 {
    color: #fff;
}

.product-icon {
    margin-bottom: 20px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.product-icon img {
    max-width: 100%;
    max-height: 100%;
    transition: all 0.3s ease;
}

.product-item:hover .product-icon img {
    filter: none;
    transform: scale(1);
}

.product-item h4 {
    font-size: 18px;
    font-weight: 500;
    color: #333;
    margin-bottom: 20px;
    transition: color 0.3s ease;
}

.product-btn {
    display: inline-block;
    background-color: #ffcc00;
    color: #333;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.product-item:hover .product-btn {
    display: none;
}

.product-btn:hover {
    background-color: #333;
    color: #ffcc00;
}

.product-stats {
    display: none;
    margin-top: 20px;
}

.product-item:hover .product-stats {
    display: block;
}

.stat-row {
    display: flex;
    justify-content: center;
    gap: 30px;
}

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

.stat-number {
    font-size: 24px;
    font-weight: bold;
    color: #ff6600;
    display: block;
}

.stat-label {
    font-size: 14px;
    color: #fff;
    display: block;
    margin-top: 5px;
}

/* 全球服务 */
.custom-service {
    padding: 60px 0;
    background-color: #f9f9f9;
}

.service-content {
    display: flex;
    gap: 0;
    align-items: stretch;
}

.service-text {
    flex: 1;
    background-color: #fff;
    padding: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.service-header {
    margin-bottom: 40px;
}

.service-time {
    font-size: 14px;
    color: #666;
    margin-bottom: 10px;
}

.service-header h2 {
    font-size: 36px;
    font-weight: bold;
    color: #333;
    margin: 0;
}

.service-options {
    margin-bottom: 40px;
}

.service-options li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
    border-bottom: 1px solid #e0e0e0;
    cursor: pointer;
    transition: all 0.3s ease;
}

.service-options li:hover {
    color: #ff6600;
}

.icon-right {
    font-size: 12px;
    color: #999;
    transition: all 0.3s ease;
}

.service-options li:hover .icon-right {
    color: #ff6600;
    transform: translateX(5px);
}

.service-buttons {
    display: flex;
    gap: 20px;
}

.service-btn {
    padding: 12px 30px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.primary-btn {
    background-color: #ff6600;
    color: #fff;
}

.primary-btn:hover {
    background-color: #ff8800;
    transform: translateY(-2px);
}

.secondary-btn {
    background-color: #fff;
    color: #333;
    border: 1px solid #ddd;
}

.secondary-btn:hover {
    background-color: #f5f5f5;
    transform: translateY(-2px);
}

.service-image {
    flex: 1;
    position: relative;
}

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

.service-stats {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(0,0,0,0.7);
    padding: 30px;
    color: #fff;
    display: flex;
    justify-content: space-around;
}

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

.stat-number {
    display: block;
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 5px;
}

.stat-text {
    font-size: 12px;
    opacity: 0.8;
}

.service-hotline {
    position: absolute;
    bottom: 100px;
    right: 30px;
    color: #333;
    font-size: 14px;
}

.hotline-number {
    font-size: 18px;
    font-weight: bold;
    color: #ff6600;
    margin-left: 5px;
}

/* 产品应用场景 */
.application-scenes {
    padding: 60px 0;
    background-color: #f9f9f9;
    position: relative;
}

.application-scenes .w1480 {
    width: 1920px;
    max-width: 100%;
}

.scenes-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    margin-top: 40px;
}

.scene-item {
    position: relative;
    overflow: hidden;
    height: 700px;
}

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

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

.scene-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    padding: 30px 20px 20px;
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: all 0.3s ease;
}

.scene-icon {
    font-size: 32px;
    margin-bottom: 10px;
}

.scene-overlay h4 {
    font-size: 18px;
    font-weight: 500;
    margin: 0;
}

.scene-item:hover .scene-overlay {
    background: rgba(0,0,0,0.8);
    height: 100%;
    justify-content: center;
    padding: 20px;
}

.scene-item:hover .scene-icon {
    display: none;
}

.scene-item:hover .scene-overlay h4 {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 30px;
    color: #ffcc00;
}

.scene-equipment {
    display: none;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    width: 100%;
    max-width: 300px;
    margin: 20px 0;
}

.scene-item:hover .scene-equipment {
    display: grid;
}

.equipment-item {
    background-color: rgba(255,255,255,0.1);
    padding: 10px;
    border-radius: 4px;
    text-align: center;
    font-size: 14px;
    transition: all 0.3s ease;
}

.equipment-item:hover {
    background-color: rgba(255,204,0,0.2);
    transform: translateY(-2px);
}

.scene-more {
    display: none;
    margin-top: 20px;
}

.scene-item:hover .scene-more {
    display: block;
}

.scene-more a {
    color: #ffcc00;
    font-size: 14px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    transition: all 0.3s ease;
}

.scene-more a:hover {
    transform: translateX(5px);
}

/* 右侧固定联系按钮 */
.fixed-contact {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 1000;
}

.contact-btn {
    width: 50px;
    height: 50px;
    background-color: #ff6600;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.contact-btn:hover {
    background-color: #ff8800;
    transform: scale(1.1);
}

.contact-btn span {
    font-size: 20px;
}

.contact-btn p {
    font-size: 10px;
    margin: 2px 0 0;
    white-space: nowrap;
    position: absolute;
    right: 60px;
    background-color: #ff6600;
    padding: 5px 10px;
    border-radius: 4px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.contact-btn:hover p {
    opacity: 1;
    visibility: visible;
}

.top-btn {
    background-color: #333;
}

.top-btn:hover {
    background-color: #555;
}

/* 新闻资讯 */
.news-showcase {
    padding: 60px 0;
    background-color: #fff;
}

.news-container {
    display: flex;
    gap: 30px;
    margin-top: 40px;
}

.news-left {
    flex: 2;
    display: flex;
    gap: 20px;
}

.news-right {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.news-card {
    background-color: #f9f9f9;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

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

.news-card.small {
    display: flex;
    gap: 15px;
    padding: 15px;
}

.news-image {
    overflow: hidden;
}

.news-card.large .news-image {
    height: 200px;
}

.news-card.small .news-image {
    width: 100px;
    height: 100px;
    flex-shrink: 0;
}

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

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

.news-card.large h4 {
    font-size: 16px;
    font-weight: 500;
    color: #333;
    margin: 15px 15px 10px;
    line-height: 1.4;
}

.news-card.small h4 {
    font-size: 14px;
    font-weight: 500;
    color: #333;
    margin: 0 0 8px;
    line-height: 1.4;
}

.news-date {
    font-size: 12px;
    color: #999;
    margin: 0 15px 10px;
}

.news-card.small .news-date {
    margin: 0 0 8px;
}

.news-desc {
    font-size: 12px;
    color: #666;
    margin: 0 15px 15px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.news-desc1 {
    font-size: 14px;
    color: #666;
    margin: 0 20px;
    line-height: 2;
}

.news-card.small .news-desc {
    margin: 0;
    -webkit-line-clamp: 3;
}

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

/* 视频展示 */
.video-showcase {
    padding: 60px 0;
    background-color: #f9f9f9;
}

.video-content {
    display: flex;
    gap: 50px;
    align-items: flex-start;
}

.video-left {
    flex: 1;
    background-color: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.video-left h3 {
    font-size: 24px;
    font-weight: bold;
    color: #333;
    margin-bottom: 15px;
}

.video-left p small {
    color: #666;
    font-size: 14px;
    margin-bottom: 30px;
    display: block;
}

.video-features {
    margin-bottom: 40px;
}

.video-features li {
    margin-bottom: 30px;
}

.feature-title {
    display: block;
    font-size: 16px;
    font-weight: 500;
    color: #333;
    margin-bottom: 10px;
}

.video-features p {
    font-size: 14px;
    color: #666;
    line-height: 1.5;
}

.scan-tip {
    font-size: 16px;
    font-weight: 500;
    color: #333;
    margin-bottom: 20px;
}

.qr-code-group {
    display: flex;
    gap: 30px;
}

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

.qr-code-item img {
    width: 80px;
    height: 80px;
    margin-bottom: 10px;
}

.qr-code-item p {
    font-size: 12px;
    color: #666;
}

.video-right {
    flex: 1;
}

.video-right h3 {
    font-size: 24px;
    font-weight: bold;
    color: #333;
    margin-bottom: 30px;
}

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

.video-card {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.video-thumbnail {
    position: relative;
    height: 450px;
    overflow: hidden;
}

.video-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background-color: rgba(0,0,0,0.7);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.video-play-btn:hover {
    background-color: #ffcc00;
    color: #333;
}

.video-play-btn.playing {
    animation: pulse 1s ease-in-out;
}

@keyframes pulse {
    0% {
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        transform: translate(-50%, -50%) scale(1.2);
    }
    100% {
        transform: translate(-50%, -50%) scale(1);
    }
}

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background-color: rgba(0,0,0,0.7);
    color: #fff;
    font-size: 12px;
    padding: 5px 10px;
    border-radius: 15px;
}

.video-title {
    font-size: 14px;
    font-weight: 500;
    color: #333;
    margin: 15px 15px 5px;
}

.video-subtitle {
    font-size: 12px;
    color: #999;
    margin: 0 15px 15px;
}

/* 底部信息栏 */
.footer {
    background-color: #2c3e50;
    color: #fff;
    padding: 40px 0;
}

.footer > .w1480 {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.footer-left {
    flex: 0 0 30%;
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.footer-logo img {
    width: 80px;
    height: 80px;
    margin-right: 20px;
}

.footer-logo h3 {
    color: #ffcc00;
    font-size: 24px;
    margin: 0;
}

.footer-qr-codes {
    display: flex;
    gap: 20px;
    margin-top: 20px;
}

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

.qr-code-item img {
    width: 80px;
    height: 80px;
}

.qr-code-item p {
    font-size: 12px;
    margin-top: 5px;
}

.footer-nav {
    flex: 0 0 70%;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.footer-nav-item {
    position: relative;
    margin: 0 15px;
}

.footer-nav-item > a {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    font-weight: bold;
    padding: 10px 0;
    display: block;
    transition: color 0.3s ease;
}

.footer-nav-item > a:hover {
    color: #ffcc00;
}

.footer-submenu {
    position: absolute;
    top: 100%;
    left: 0;
    list-style: none;
    padding: 0;
    margin: 0;
    width: 150px;
    z-index: 1000;
    opacity: 1;
    visibility: visible;
}

.footer-nav-item:hover .footer-submenu {
    opacity: 1;
    visibility: visible;
}

.footer-submenu li {
}

.footer-submenu li a {
    color: #999;
    text-decoration: none;
    font-size: 14px;
    padding: 8px 0px;
    display: block;
    transition: color 0.3s ease;
}

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

.footer-search {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid #34495e;
}

.search-container {
    background-color: #34495e;
    padding: 20px;
    border-radius: 5px;
}

.search-container h4 {
    color: #ffcc00;
    font-size: 16px;
    margin-bottom: 15px;
}

.search-form {
    display: flex;
    gap: 15px;
    align-items: center;
}

.search-form select {
    padding: 8px 12px;
    border: 1px solid #555;
    border-radius: 3px;
    background-color: #2c3e50;
    color: #fff;
}

.search-btn {
    padding: 8px 20px;
    background-color: #ffcc00;
    color: #333;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.search-btn:hover {
    background-color: #333;
    color: #ffcc00;
}

.footer-info {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #34495e;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-contact {
    font-size: 12px;
    color: #aaa;
}

.footer-links {
    display: flex;
    gap: 15px;
    align-items: center;
}

.footer-links a {
    color: #fff;
    text-decoration: none;
    font-size: 12px;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #ffcc00;
}

.footer-links img {
    width: 40px;
    height: 40px;
}

.footer-icons {
    display: flex;
    gap: 10px;
}

.footer-icon {
    font-size: 20px;
    color: #fff;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-icon:hover {
    color: #ffcc00;
}

/* 回到顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: #ffcc00;
    color: #333;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    text-align: center;
    line-height: 50px;
    text-decoration: none;
    font-size: 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    z-index: 999;
    transition: all 0.3s ease;
}

.back-to-top:hover {
    background-color: #333;
    color: #ffcc00;
}

/* 加载动画 */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

/* 响应式设计 */
@media (max-width: 1800px) {
    .w1800 {
        width: 95%;
    }
}

@media (max-width: 1480px) {
    .w1480 {
        width: 95%;
    }
}

@media (max-width: 1200px) {
    .product-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .scenes-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .case-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .main-header {
        display: none;
    }
    
    .xymob-head {
        display: block;
    }
    
    .banner {
        height: 400px;
    }
    
    .banner-content {
        padding: 0 20px;
    }
    
    .banner-text h1 {
        font-size: 32px;
    }
    
    .banner-text p {
        font-size: 16px;
    }
    
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .service-content {
        flex-direction: column;
    }
    
    .scenes-grid {
        grid-template-columns: 1fr;
    }
    
    .case-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .banner {
        height: 300px;
    }
    
    .banner-text h1 {
        font-size: 24px;
    }
    
    .banner-text p {
        font-size: 14px;
    }
    
    .section-title h2 {
        font-size: 24px;
    }
}