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

body {
    font-family: 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    padding-top: 0; /* 移除顶部内边距，让轮播图作为导航栏背景 */
}

/* 导航栏和轮播图容器样式 */
.menu-banner-container {
    position: relative;
    z-index: 2;
    background-image: url('../images/Rectangle_3835.png');
    background-size: cover;
    background-position: center;
    margin-bottom: 0; /* 移除负值margin，避免遮挡下方内容 */
}

/* 导航栏和轮播图容器样式 */
.menu-banner-container {
    position: relative;
    z-index: 2;
    overflow: hidden;
    width: 100%;
    display: block;
}

.menu-banner-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, .7);
    z-index: 1;
}

/* 导航栏样式 */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: transparent;
    box-shadow: none;
    transition: all 0.3s ease;
}

/* 导航栏黑白背景样式 */
header.scrolled {
    background: #ffffff; /* 黑色半透明背景 */
    box-shadow: 0 2px 10px rgba(255, 255, 255, 0.1);
    transition: all 0.6s ease;
}

/* 确保.header元素继承header的背景颜色 */
header .header {
    background: inherit;
    transition: all 1s ease;
}

/* 导航栏黑白背景时的链接样式 */
header.scrolled .nav a {
    color: rgb(0, 0, 0); /* 白色文字 */
    text-shadow: none;
    transition: all 1s ease;
}

/* 导航栏黑白背景时的下划线样式 */
header.scrolled .nav-underline {
    background-color: white; /* 白色下划线 */
    transition: all 1s ease;
}

/* 导航栏黑白背景时的链接悬停和选中样式 */
header.scrolled .nav a:hover,
header.scrolled .nav a.on {
    color: rgba(237, 109, 30, 1);
}

/* 导航栏黑白背景时的Logo样式 */
header.scrolled .logo img {
    width: 120px;
    transition: all 1s ease;
}

/* 导航栏内容样式 */
.header {
    margin: 0;
    padding: 0px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

/* 导航链接样式 */
.nav a {
    text-decoration: none;
    color: white;
    font-size: 16px;
    transition: all 0.3s;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
    padding-bottom: 5px;
}

.nav a:hover,
.nav a.on {
    color: rgba(237, 109, 30, 1);
}

.logo img {
    width: 100px;
    height: 140px;
}

.nav {
    display: flex;
    gap: 40px;
    position: relative;
}

.nav-underline {
    position: absolute;
    bottom: 0;
    height: 2px;
    background-color: white;
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(5px);
    visibility: hidden;
}

/* 当导航栏中有带有class="on"的链接时，显示下划线 */
.nav a.on ~ .nav-underline {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
}

/* 滚动时的下划线样式 */
header.scrolled .nav a.on ~ .nav-underline {
    background-color: rgba(237, 109, 30, 1);
}









/* 轮播图样式 */
.banner {
    position: relative;
    width: 100%;
    padding-bottom: 50%; /* 100/2.17 ≈ 46.08，保持2.17:1的宽高比 */
    overflow: hidden;
    /* 添加黑色背景图片 */
    background-image: url('../images/Rectangle_3835.png');
    background-size: cover;
    background-position: center;
    z-index: 0;
}

.banner-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.banner-row {
    flex: 1;
    overflow: hidden;
    position: relative;
}

.banner-slides {
    display: flex;
    height: 100%;
    animation: scroll 30s linear infinite;
}

.banner-slides.reverse {
    animation: scrollReverse 30s linear infinite;
}

.banner-slide {
    min-width: 25%; /* 每行显示4张图片 */
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1; /* 提高透明度，让轮播图图片更清晰 */
}

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

@keyframes scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

@keyframes scrollReverse {
    0% {
        transform: translateX(-50%);
    }
    100% {
        transform: translateX(0);
    }
}

.text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: white;
    z-index: 10;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
}

.text .text-title {
    font-size: 48px;
    line-height: 1.2;
}

.text img {
    max-width: 100%;
    height: auto;
    display: inline-block;
}

.text-title img {
    margin-top: 20px;
}

.xian-container img {
    margin-top: 0;
}

.sh {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: white;
    z-index: 10;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
}

.sh img {
    max-width: 100%;
    height: auto;
    margin-top: 20px;
    display: inline-block;
}

/* 公司简介样式 */
.about {
    padding: 100px 40px;
    max-width: 1600px;
    margin: 0 auto;
}

.about .title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
    color: #333;
}

.timeline {
    position: relative;
    margin: 0 auto;
    max-width: 1200px;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    width: 2px;
    height: 100%;    
    background: #ff6b35;
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 60px;
    position: relative;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-item .year {
    font-size: 24px;
    font-weight: bold;
    color: #ff6b35;
    margin: 0 40px;
    cursor: pointer;
    transition: all 0.3s;
}

.timeline-item .year:hover {
    color: #ff6b35;
}

.timeline-item .content {
    max-width: 45%;
    padding: 20px;
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

.timeline-item .content h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #ff6b35;
}

.timeline-item .content p {
    font-size: 16px;
    color: #666;
}

/* 数据展示样式 */
.data-swiper {
    position: relative;
    width: 100%;
    height: auto;
}

/* 关键成果轮播分页器样式 - 灰色长条 */
.data-swiper .swiper-pagination {
    top: 480px;
    bottom: auto;
}

.data-swiper .swiper-pagination-bullet {
    width: 20px;
    height: 6px;
    background: #666;
    border-radius: 3px;
    opacity: 1;
    margin: 0 5px;
    transition: all 0.3s ease;
}

.data-swiper .swiper-pagination-bullet-active {
    background: #ED6D1E;
    width: 40px;
}


.achievement-info {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 220px;
}

.achievement-info .logo {
    max-width: 100%;
    height: auto;
}

.data .wrap {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

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

.data-number {
    font-size: 48px;
    font-weight: bold;
    color: #ff6b35;
    margin-bottom: 10px;
    opacity: 0;
    transform: scale(0.5);
    transition: all 0.8s ease;
}

.data-number.animate {
    opacity: 1;
    transform: scale(1);
}

.data-label {
    font-size: 16px;
    color: #666;
}

/* 发展理念样式 */
.philosophy {
    padding: 100px 40px;
    max-width: 1600px;
    margin: 0 auto;
}

.philosophy .title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
    color: #333;
}

.philosophy .wrap {
    display: flex;
    justify-content: center;
    gap: 40px;
}

.philosophy-item {
    max-width: 300px;
    text-align: center;
}

.philosophy-item .icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: #ff6b35;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
}

.philosophy-item h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #333;
}

.philosophy-item p {
    font-size: 16px;
    color: #666;
}

/* 主营业务样式 */
.business {
    padding: 100px 40px;
    background: #f8f8f8;
}

.business .title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
    color: #333;
}

.business-slider {
    position: relative;
    width: 83.3333333333vw;
    margin: 0 auto;
    overflow: hidden;
}

.business-swiper {
    position: relative;
    width: 100%;
    height: auto;
}

.business-swiper .swiper-slide {
    padding: 60px 60px 60px 60px;
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    height: auto;
}

.business-content {
    display: flex;
    gap: 40px;
    align-items: flex-start;
}

.business-info {
    flex: 1;
    padding: 0 0 20px;
    margin-left: 0px;
}

.business-info .logo {
    font-size: 48px;
    margin-bottom: 20px;
}

.business-info h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #333;
}

.business-info p {
    font-size: 16px;
    color: #666;
    margin-bottom: 30px;
    line-height: 1.6;
}

.slide-counter {
    font-size: 14px;
    color: #999;
    margin-top: 50px;
}

.business-images {
    flex: 1;
    display: flex;
    gap: 20px;
    justify-content: center;
}
.business-images .img {
    max-width: none !important;
}

.phone-image {
    width: 120px;
    height: 240px;
    background: #f5f5f5;
    border-radius: 20px;
    padding: 10px;
    position: relative;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
    border-radius: 15px;
    padding: 15px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

.phone-screen::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 4px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 2px;
}

.screen-content {
    text-align: center;
}

.screen-title {
    font-size: 14px;
    font-weight: bold;
    margin-bottom: 10px;
    color: #2e7d32;
}

.screen-status {
    font-size: 12px;
    color: #4caf50;
    padding: 5px 10px;
    background: rgba(76, 175, 80, 0.1);
    border-radius: 10px;
    display: inline-block;
}

.slide-counter {
    position: absolute;
    bottom: 20px;
    left: 60px;
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.9);
    padding: 8px 16px;
    border-radius: 20px;
    z-index: 1000;
}

.slide-counter .current-slide,
.slide-counter .total-slides {
    font-size: 16px;
    font-weight: bold;
    color: #333;
}

.slide-counter .current-slide {
    color: #ff6b35;
}

.slide-counter .next-slide {
    width: 30px;
    height: 30px;
    background: #ff6b35;
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.slide-counter .prev-slide {
    width: 30px;
    height: 30px;
    background: #ff6b35;
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

/* APP产品展示样式 */
.app-show {
    padding: 100px 40px;
    max-width: 1600px;
    margin: 0 auto;
}

.app-container {
    display: flex;
    align-items: center;
    gap: 60px;
}

.app-info {
    flex: 1;
}

.app-info h2 {
    font-size: 36px;
    margin-bottom: 20px;
    color: #333;
}

.app-info p {
    font-size: 16px;
    color: #666;
    margin-bottom: 40px;
}

.app-download {
    display: flex;
    gap: 20px;
}

.app-download button {
    padding: 10px 20px;
    background: #ff6b35;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background 0.3s;
}

.app-download button:hover {
    background: #f7931e;
}

.app-phone {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.app-phone {
    width: 200px;
    height: 400px;
    background: #333;
    border-radius: 30px;
    padding: 20px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.app-phone.active {
    transform: scale(1.1);
    background: #ff6b35;
}

.app-screen {
    width: 100%;
    height: 100%;
    background: white;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: #333;
    transition: background 0.3s ease;
}

.app-phone.active .app-screen {
    background: #f8f8f8;
}

/* 主要产品样式 */
.products {
    padding: 100px 40px;
    background: #f8f8f8;
}

.products .title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
    color: #333;
}

.products-slider {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    overflow: hidden;
}

.products-container {
    display: flex;
    transition: transform 0.5s ease;
    gap: 30px;
}

.product-item {
    min-width: calc(33.333% - 20px);
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.product-item:hover {
    transform: translateY(-10px);
}

.product-item .image {
    height: 200px;
    background: linear-gradient(to right, #4ecdc4, #45b7d1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
}

.product-item .content {
    padding: 20px;
}

.product-item .content h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #333;
}

.product-item .content p {
    font-size: 14px;
    color: #666;
}

.products-slider .prev, .products-slider .next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    background: #ff6b35;
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    z-index: 10;
}

.products-slider .prev {
    left: -20px;
}

.products-slider .next {
    right: -20px;
}

/* 领导团队样式 */
.team {
    padding: 100px 40px;
    max-width: 1600px;
    margin: 0 auto;
}

.team .title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
    color: #333;
}

.team-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
}

.team-member {
    width: calc(25% - 20px);
    min-width: 280px;
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease;
    cursor: pointer;
}

.team-member:hover {
    transform: translateY(-10px);
}

.member-photo {
    height: 200px;
    background: linear-gradient(to right, #ff6b35, #f7931e);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
}

.member-info {
    padding: 20px;
}

.member-info h3 {
    font-size: 20px;
    margin-bottom: 5px;
    color: #333;
}

.member-info .position {
    font-size: 14px;
    color: #ff6b35;
    margin-bottom: 10px;
}

.member-info .description {
    font-size: 14px;
    color: #666;
}

/* 领导团队详情弹窗样式 */
.member-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.member-modal.active {
    display: flex;
}

.modal-content {
    width: 80%;
    max-width: 600px;
    background: white;
    border-radius: 8px;
    padding: 30px;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 10px;
    right: 20px;
    font-size: 30px;
    cursor: pointer;
    color: #666;
}

.modal-header {
    text-align: center;
    margin-bottom: 30px;
}

.modal-photo {
    width: 120px;
    height: 120px;
    margin: 0 auto 20px;
    background: linear-gradient(to right, #ff6b35, #f7931e);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 60px;
}

.modal-header h3 {
    font-size: 24px;
    margin-bottom: 5px;
    color: #333;
}

.modal-header .position {
    font-size: 16px;
    color: #ff6b35;
}

.modal-body {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
}

/* 联系我们样式 */
.contact {
    padding: 100px 40px;
    background: #333;
    color: white;
}

.contact .wrap {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    gap: 60px;
}

.contact-info {
    flex: 1;
}

.contact-info h3 {
    font-size: 24px;
    margin-bottom: 40px;
    color: white;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    gap: 15px;
}

.contact-item .icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #ff6b35;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.map {
    flex: 2;
    min-width: 300px;
    height: 400px;
    background: #444;
    border-radius: 8px;
    overflow: hidden;
}

/* 关键成果云背景 */
.section {
    position: relative;
}

.section.sec4 {
    position: relative;
    overflow: hidden;
}