/* 3D打印网站样式 */

/* 基础样式 */
body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    font-family: 'Arial', sans-serif;
}

a,
a:focus {
    text-decoration: none;
    color: inherit;
}

/* Footer样式 */
.footer {
    position: fixed;
    bottom: -300vh;
    left: 0;
    width: 100%;
    height: 100px;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 14px;
    z-index: -1;
    transform: translateY(100%);
    transition: transform 0.5s ease-in-out;
    visibility: hidden;
}



/* 全屏滚动容器 */
.fullpage-container {
    height: 100vh;
    position: relative;
    transition: transform 0.5s ease-in-out;
}

.section {
    height: 100vh;
    width: 100%;
    position: relative;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgb(41, 41, 42);
    padding: 0 50px;
    height: 70px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #ee8303;
    letter-spacing: 3px;
}

.nav-menu {
    height: 100%;
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-menu a {
    width: 80px;
    height: 70px;
    position: relative;
    color: #999;
    font-size: 0.95rem;
    line-height: 70px;
    user-select: none;
    text-align: center;
    text-decoration: none;
}

.nav-menu a:not(:last-child) {
    margin-right: 20px;
}

.nav-menu a.active::after,
.nav-menu a:hover::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #ee8303;
}

.nav-menu a.active,
.nav-menu a:hover {
    color: #ee8303;
}

/* 汉堡菜单按钮样式 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: #ee8303;
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

/* 移动端侧边栏样式 */
.mobile-sidebar {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1002;
}

.mobile-sidebar.active {
    display: block;
}

.mobile-sidebar-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mobile-sidebar.active .mobile-sidebar-overlay {
    opacity: 1;
}

.mobile-sidebar-content {
    position: absolute;
    top: 0;
    right: 0;
    width: 280px;
    height: 100%;
    background: rgb(41, 41, 42);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
}

.mobile-sidebar.active .mobile-sidebar-content {
    transform: translateX(0);
}

.mobile-sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid #555;
}

.mobile-logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #ee8303;
    letter-spacing: 3px;
}

.mobile-sidebar-close {
    background: none;
    border: none;
    color: #ee8303;
    font-size: 24px;
    cursor: pointer;
    padding: 5px;
    line-height: 1;
}

.mobile-nav-menu {
    padding: 20px 0;
}

.mobile-nav-menu a {
    display: block;
    padding: 15px 20px;
    color: #999;
    text-decoration: none;
    font-size: 1rem;
    border-bottom: 1px solid #555;
    transition: all 0.3s ease;
}

.mobile-nav-menu a:hover,
.mobile-nav-menu a.active {
    color: #ee8303;
    background: rgba(238, 131, 3, 0.1);
    padding-left: 30px;
}

/* 首页区域 - 轮播图 */
.hero-section {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    position: relative;
    overflow: hidden;
}

.hero-swiper {
    margin-top: 70px;
    width: 100%;
    height: 100vh;
}

.hero-swiper .swiper-slide {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slide-content {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

.slide-title {
    position: absolute;
    top: 15%;
    left: 50%;
    width: 400px;
    transform: translateX(-50%);
    margin-bottom: 20px;
    z-index: 1;
}

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

/* Swiper 导航按钮样式 */
.hero-button-prev,
.hero-button-next {
    position: absolute;
    width: 60px;
    height: 60px;
    background: none;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-button-prev {
    left: 30px;
    background: url('../images/vbg01.png') 0 -42px;
    margin-left: 1%;
    transition: margin-left .3s ease-out 0s;
}

.hero-button-next {
    right: 30px;
    background: url('../images/vbg01.png') -55px -42px;
    margin-right: 1%;
    transition: margin-right .3s ease-out 0s;
}

.hero-button-prev:hover {
    margin-left: 15px;
}

.hero-button-next:hover {
    margin-right: 15px;
}

.hero-button-prev:after,
.hero-button-next:after {
    background-color: #4c4c4c;
    bottom: 0;
    content: "";
    height: 2px;
    margin-bottom: auto;
    margin-top: auto;
    position: absolute;
    top: 0;
    transition: all .4s cubic-bezier(.215, .61, .355, 1) 0s;
    width: 0;
}

.hero-button-prev:hover:after {
    left: 32px;
    width: 20px;
}

.hero-button-next:hover:after {
    right: 32px;
    width: 20px;
}

/* 项目案例区域 */
.products-section {
    background: url('../images/bg02.png') no-repeat center center;
    background-size: cover;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.products-header {
    margin: 0 0 100px 6.5%;
    display: flex;
    flex-direction: column;
    row-gap: 10px;
    align-items: flex-start;
    justify-content: center;
}

.section-title {
    text-align: left;
    font-size: 1.5rem;
    line-height: 1;
    color: #333;
    margin: 0;
}

.section-subtitle {
    text-align: left;
    font-size: 0.7rem;
    line-height: 1;
    color: #666;
    font-weight: normal;
}

.products-grid {
    display: flex;
    align-items: center;
    justify-content: space-around;
    margin-bottom: 50px;
}

.product-card {
    width: calc(100% / 3);
    background: white;
    overflow: hidden;
    padding: 10px 20px;
}

.product-card .product-content {
    position: relative;
    width: 100%;
    height: 100%;
}

.product-image {
    width: 100%;
    height: 100%;
}

.product-info {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    font-size: 1rem;
    text-align: center;
    color: #fff;
    padding: 5px 0;
    background: rgba(0, 0, 0, 0.5);
}

.product-desc {
    color: #666;
    font-size: 0.9rem;
}

/* 材料区域 */
.materials-section {
    background: url('../images/bg03.jpg') no-repeat center center;
    background-size: cover;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.materials-content {
    display: flex;
    padding: 0 6.5%;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20vh;
}

.material-left {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    width: 50%;
}

.material-left img {
    width: 70%;
}

.material-right {
    width: 30%;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    margin-right: 10%;
}

.material-right .material-title {
    position: relative;
    font-size: 1.2rem;
    padding: 20px 0;
}

.material-right .material-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: #ee8303;
}

.material-right .material-desc {
    font-size: 0.7rem;
    padding: 20px 0;
    color: #666;
}

/* 技术规格区域 */
.specs-section {
    background: #f4f4f4;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.specs-top {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.specs-top img {
    width: 100%;
    transition: all 0.3s ease-out;
}

.specs-paly-btn {
    position: absolute;
    background: url(../images/vbg01.png) -116px -196px no-repeat;
    height: 60px;
    width: 60px;
    top: 30%;
    left: 50%;
    z-index: 1;
    cursor: pointer;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: top 0.3s ease-out, opacity 0.3s ease-out;
}

.specs-top:hover .specs-paly-btn {
    top: 50%;
    opacity: 1;
}

.specs-top:hover img {
    transform: scale(1.05);
}

.specs-header {
    margin: 20px 0 0 6.5%;
    display: flex;
    flex-direction: column;
    row-gap: 10px;
    align-items: flex-start;
    justify-content: center;
}

.specs-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.specs-title {
    font-size: 1.2rem;
}

.specs-text_1 {
    font-size: 0.7rem;
    margin: 0;
    color: #666;
}

.specs-text_2 {
    font-size: 0.7rem;
    margin: 0;
    color: #666;
}

/* 联系区域 */
.contact-section {
    background: url('../images/bg05.webp') no-repeat center center;
    background-size: cover;
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align: center;
}

/* 合作伙伴Grid布局样式 */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    grid-template-rows: repeat(3, 1fr);
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.partner-item {
    display: flex;
    justify-content: center;
    align-items: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    padding: 15px;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
}

.partner-logo {
    width: 100%;
    object-fit: contain;
    transition: all 0.3s ease;
}

.partner-logo:hover {
    transform: scale(1.05);
}

/* 滚动指示器 */
.scroll-indicator {
    position: fixed;
    right: 5px;
    top: 50%;
    padding: 10px;
    transform: translate(-50%, -50%);
    z-index: 1000;
}

/* 在第一页时隐藏滚动指示器 */
.scroll-indicator.hide-on-first {
    opacity: 0;
    pointer-events: none;
}

.scroll-dot {
    height: 4px;
    margin-bottom: 20px;
    width: 4px;
    cursor: pointer;
    list-style: none;
    position: relative;
    color: #ee8303;
}

.scroll-dot {
    font-size: 1.2rem;
    height: 20px;
    line-height: 1;
    width: 50px;
}

.scroll-dot::after {
    background: #a8a8a8;
    border-radius: 50%;
    content: "";
    height: 4px;
    left: 40px;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
}

.scroll-dot.active::before {
    border: 2px solid #ee8303;
    border-radius: 50%;
    box-sizing: border-box;
    content: "";
    height: 20px;
    left: 32px;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
}

::-webkit-scrollbar {
    display: none;
}

/* 解决方案页面专用样式 */
.solution-page {
    background-color: #f5f5f5;
    min-height: 100vh;
}

/* 主要内容区域 */
.main-content {
    margin-top: 70px;
}

/* 数字化制造方案区域 */
.solution-hero {
    display: flex;
    align-items: center;
    background: #f8f3f4;
    padding: 9vh 0;
    border-radius: 10px;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.solution-image {
    flex: 1;
    text-align: center;
}

.solution-image img {
    width: 100%;
}

.solution-content {
    flex: 1;
    padding-right: 11.5%;
}

.solution-title {
    position: relative;
    font-size: 28px;
    color: #333;
    margin-bottom: 40px;
}

.solution-title::after {
    content: "";
    display: block;
    width: 45px;
    height: 2px;
    background: #ee8303;
    margin-top: 20px;
}

.solution-subtitle {
    font-size: 0.8rem;
    color: #666;
    margin-bottom: 20px;
}

.solution-description {
    font-size: 0.7rem;
    color: #999;
    line-height: 30px;
}

/* 应用领域卡片 */
.application-areas {
    display: grid;
    grid-template-columns: 50% 50%;
    gap: 0;
}

.area-card {
    width: 100%;
    color: #fff;
    position: relative;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.area-card.sports {
    background: #1ebae8;
}

.area-card.medical {
    background: #f58f8f;
}

.area-card.robot {
    background: #1ed674;
}

.area-card.automotive {
    background: #e9b539;
}

.area-card .card-left {
    width: 50%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.area-card .card-left img {
    width: 100%;
    height: auto;
}

.area-card .card-right {
    width: calc(50% - 6.7%);
    padding-right: 6.7%;
}

.area-title {
    font-size: 1rem;
    margin-bottom: 10px;
}

.area-description {
    font-size: 0.7rem;
    line-height: 30px;
    opacity: 0.9;
}

/* 项目案例页面专用样式 */
.product-page {
    height: 100%;
    background-color: #ffffff;
    overflow-x: hidden;
}

/* 项目案例页面主要内容区域 */
.product-page .main-content {
    height: calc(100% - 70px - 100px);
    margin-top: 70px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* Tab导航区域 */
.tab-navigation {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 8%;
    margin-bottom: 10px;
    flex-wrap: wrap;
    gap: 8px;
    padding: 0 20px;
}

.tab-item {
    background: #fff;
    border: none;
    padding: 10px 30px;
    border-radius: 4px;
    font-size: 1rem;
    line-height: 1;
    color: #666;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    white-space: nowrap;
    min-width: fit-content;
}

.tab-item.active {
    background: #ee8303;
    color: #fff;
}

.tab-item.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 10px;
    height: 10px;
    background: #ee8303;
    transform: translate(-50%, 50%) rotate(45deg);
}

.tab-item:hover {
    background: #ee8303;
    color: #fff;
}

/* 内容滑动容器 */
.content-slider {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.content-wrapper {
    display: flex;
    width: 300%;
    height: 100%;
    transition: transform 0.6s ease-in-out;
}

.content-panel {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-sizing: border-box;
}

/* 关于我们页面专用样式 */
.about-page {
    background-color: #f8f8f8;
    min-height: 100vh;
}

.about-page .main-content {
    margin-top: 70px;
}

/* ABOUT US 部分 */
.about-section {
    position: relative;
    padding: 80px 0 120px;
}

.about-section::after {
    content: 'About';
    position: absolute;
    top: 60px;
    right: 10px;
    font-size: 12rem;
    line-height: 1;
    font-weight: bold;
    color: #f3f3f3;
    z-index: -1;
}

.about-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 60px;
    padding: 0 50px;
}

.about-left {
    flex: 1;
}

.about-title {
    font-size: 1.2rem;
    font-weight: bold;
    color: #333;
    letter-spacing: 2px;
}

.about-subtitle {
    font-size: 0.7rem;
    color: #666;
    margin-bottom: 40px;
}

.about-text {
    margin-bottom: 40px;
}

.about-text p {
    font-size: 0.7rem;
    line-height: 2;
    color: #999;
    padding: 15px 0;
    margin: 0;
}

.more-btn {
    background-color: #ee8303;
    color: white;
    border: none;
    padding: 12px 40px;
    font-size: 0.9rem;
    border-radius: 2px;
    cursor: pointer;
    transition: filter 0.3s ease;
}

.more-btn:hover {
    filter: brightness(0.95);
}

.about-right {
    z-index: 9;
    flex: 1;
}

.about-image {
    position: relative;
    padding: 10px 20px;
    border: 1px solid #ee8303;
}

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

/* 技术介绍部分 */
.tech-section {
    background: linear-gradient(135deg, #eb6002 0%, #ee8303 100%);
    padding: 0 0 100px;
    margin-top: 100px;
    color: white;
}

.tech-container {
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 50px;
}

.tech-image {
    margin: 0 11.6%;
    transform: translateY(-100px);
}

.tech-image img {
    width: 100%;
    height: auto;
}

.tech-content {
    flex: 1;
    padding: 0 100px;
}

.tech-top {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    row-gap: 30px;
}

.tech-title {
    position: relative;
    font-size: 1rem;
    letter-spacing: 1px;
    color: #fff;
}

.tech-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 1px;
    background-color: #fff;
}

.tech-subtitle {
    font-size: 0.8rem;
    color: #fff;
}

.tech-description p {
    font-size: 0.7rem;
    line-height: 1.8;
    opacity: 0.95;
}

/* CONTACT US 部分 */
.contact-us-section {
    padding: 80px 0;
    background-color: #f8f8f8;
}

.contact-container {
    max-width: 1200px;
    /* max-height: 300px; */
    margin: 0 auto;
    display: flex;
    align-items: flex-start;
    gap: 60px;
    padding: 0 50px;
}

.contact-left-top {
    flex: 1;
}

.contact-title {
    font-size: 1rem;
    font-weight: bold;
    color: #333;
    letter-spacing: 2px;
}

.contact-subtitle {
    font-size: 0.7rem;
    color: #666;
    margin-bottom: 40px;
}

.contact-info {
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-icon {
    font-size: 1rem;
    margin-top: 2px;
}

.contact-details {
    flex: 1;
}

.contact-label {
    font-size: 0.9rem;
    color: #333;
    margin-bottom: 10px;
}

.contact-value {
    font-size: 0.8rem;
    color: #666;
    margin-bottom: 8px;
    line-height: 1.6;
}

.contact-right {
    flex: 1;
}

.map-container {
    width: 100%;
    height: 300px;
}

.map-container #mapContainer {
    width: 100%;
    height: 100%;
    border: none;
}

/* 视频弹窗样式 */
.video-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease-out;
}

.video-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    cursor: pointer;
}

.video-modal-content {
    position: relative;
    width: 90%;
    max-width: 800px;
    background: #000;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    animation: slideIn 0.3s ease-out;
}

.video-modal-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: #fff;
    font-size: 30px;
    cursor: pointer;
    z-index: 10;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.3s;
}

.video-modal-close:hover {
    color: #ee8303;
}

.video-container {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%;
    /* 16:9 宽高比 */
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* 弹窗动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideIn {
    from {
        transform: scale(0.8) translateY(-20px);
        opacity: 0;
    }

    to {
        transform: scale(1) translateY(0);
        opacity: 1;
    }
}

/* 项目案例页面瀑布流样式 */
.waterfall-container {
    column-count: 3;
    column-gap: 20px;
    padding: 20px;
}



.waterfall-item {
    break-inside: avoid;
    margin-bottom: 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
}

.waterfall-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.waterfall-item img {
    width: 100%;
    height: auto;
    display: block;
}

.waterfall-item .item-info {
    padding: 15px;
}

.waterfall-item .item-name {
    font-size: 16px;
    font-weight: bold;
    text-align: center;
    color: #333;
}

/* 模态框长按提示样式 */
.modal-long-press-hint {
    position: absolute;
    top: 15px;
    right: 55px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 14px;
    z-index: 10002;
    display: none;
}

/* 模态框悬浮简介样式 */
.modal-hover-description {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.9));
    color: white;
    padding: 30px 20px 20px;
    transform: translateY(100%);
    transition: transform 0.3s ease;
    z-index: 10001;
}

.modal-hover-description h3 {
    margin: 0 0 10px 0;
    font-size: 18px;
    font-weight: bold;
}

.modal-hover-description p {
    margin: 0;
    font-size: 14px;
    line-height: 1.5;
    opacity: 0.9;
}



/* 模态框简介样式 */
.modal-description {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.9));
    color: white;
    padding: 30px 20px 20px;
    transform: translateY(100%);
    transition: transform 0.3s ease;
    z-index: 10001;
}

.modal-description.show {
    transform: translateY(0);
}

.modal-description h3 {
    margin: 0 0 10px 0;
    font-size: 18px;
    font-weight: bold;
    text-align: center;
}

.modal-description p {
    margin: 0;
    font-size: 14px;
    line-height: 1.5;
    opacity: 0.9;
}

.loading {
    text-align: center;
    padding: 40px;
    color: #666;
}

.error {
    text-align: center;
    padding: 40px;
    color: #f56565;
}

.content-panel {
    display: none;
}

.content-panel.active {
    display: block;
}

/* 介绍页面专用样式 */
.introduction-container {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 0;
    margin: 0;
}

.introduction-header {
    position: relative;
    width: 100%;
    height: 60vh;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.introduction-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.introduction-image.loaded {
    opacity: 1;
}

.introduction-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.3) 0%, rgba(0, 0, 0, 0.1) 50%, rgba(0, 0, 0, 0.3) 100%);
}

.back-button {
    position: absolute;
    top: 20px;
    left: 20px;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50px;
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 500;
    color: #333;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 100;
    display: flex;
    align-items: center;
    gap: 8px;
    backdrop-filter: blur(10px);
}

.back-button:hover {
    background: rgba(255, 255, 255, 1);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.back-button::before {
    content: '←';
    font-size: 16px;
}

.introduction-content {
    background: white;
    padding: 40px 20px;
    margin: 0;
    position: relative;
    z-index: 10;
}

.introduction-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    text-align: center;
    margin-bottom: 30px;
    line-height: 1.2;
}

.introduction-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #666;
    max-width: 800px;
    margin: 0 auto;
    text-align: justify;
    padding: 0 20px;
}

.introduction-footer {
    background: #f8f9fa;
    padding: 30px 20px;
    text-align: center;
    border-top: 1px solid #eee;
}

.footer-text {
    color: #888;
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.contact-info {
    color: #667eea;
    font-weight: 600;
    font-size: 1rem;
}

/* 加载动画 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.fade-in-delay {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease 0.3s forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}



/* ========================================
   响应式设计
======================================== */

/* 1024px及以下 - 小屏幕正常滚动模式 */
@media (max-width: 1024px) {
    body {
        overflow: auto !important;
    }

    .fullpage-container {
        height: auto;
        transform: none;
        overflow: visible;
    }

    .section {
        height: auto;
    }

    .hero-swiper {
        height: auto;
    }

    .scroll-indicator {
        display: none;
    }

    .products-header {
        margin: 20px 3.7%;
    }

    .products-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        grid-auto-rows: min-content;
    }

    .product-card {
        width: calc(100% - 40px);
    }

    .materials-section {
        background: #f9f9f9;
    }

    .materials-content {
        flex-direction: column;
        align-items: flex-start;
        margin-bottom: 50px;
    }

    .material-left {
        width: 100%;
        margin-bottom: 20px;
    }

    .material-right {
        width: 100%;
    }

    .specs-top {
        height: 500px;
    }

    .specs-cover {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .tab-navigation {
        margin: 5% 0 3%;
    }

    .contact-container {
        flex-direction: column;
    }

    .footer {
        position: relative !important;
        bottom: 0 !important;
        transform: translateY(0) !important;
        z-index: 99 !important;
        visibility: visible !important;
    }
}

/* 980px及以下 */
@media (max-width: 980px) {
    .nav-menu {
        gap: 15px;
    }

    .nav-menu a {
        font-size: 14px;
    }

    /* 轮播图移动端适配 */
    .slide-title {
        font-size: 2.5rem;
    }

    .slide-image {
        max-width: 100%;
        order: 1;
    }

    .slide-image img {
        width: 100%;
    }

    .carousel-arrow {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }

    .carousel-arrow.prev {
        left: 15px;
    }

    .carousel-arrow.next {
        right: 15px;
    }

    .carousel-indicators {
        bottom: 20px;
    }

    .materials-content {
        flex-direction: column;
    }

    .specs-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .specs-top {
        height: 180px;
    }

    .specs-paly-btn {
        top: 50%;
        opacity: 1;
    }

    .tab-item.active::after {
        display: none;
    }
}

/* 768px及以下 - 移动端导航和布局调整 */
@media (max-width: 768px) {
    .tab-navigation {
        margin-top: 5%;
        padding: 0 15px;
        gap: 6px;
    }

    .navbar {
        padding: 0 20px;
    }

    .nav-menu {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    /* 隐藏轮播图翻页箭头 */
    .hero-button-prev,
    .hero-button-next {
        display: none !important;
    }

    .materials-content {
        padding: 0 3.7%;
    }

    .material-left {
        width: 100%;
    }

    .specs-top {
        height: 300px;
    }

    /* 解决方案页面 */
    .solution-hero {
        flex-direction: column;
    }

    .application-areas {
        grid-template-columns: 1fr;
    }

    .solution-title {
        font-size: 24px;
    }

    .solution-content {
        padding: 0 3.7%;
    }

    /* 项目案例页面 */
    .product-showcase {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .tab-item {
        padding: 12px 25px;
        font-size: 0.7rem;
    }

    /* 关于我们页面 */
    .about-subtitle {
        margin-bottom: 10px;
    }

    .about-container,
    .tech-container,
    .contact-container {
        flex-direction: column;
        gap: 40px;
        padding: 0 3.7%;
    }

    .about-section,
    .tech-section,
    .contact-us-section {
        padding: 60px 0;
    }

    .about-text p,
    .tech-description p,
    .contact-value {
        font-size: 0.85rem;
    }

    .contact-container {
        gap: 20px;
    }

    .tech-section {
        margin-top: 0;
        padding: 30px 0;
    }

    .tech-top {
        gap: 10px;
    }

    .tech-content {
        padding: 0 10px;
    }

    .tech-image {
        margin: 0 3.7%;
        transform: translateY(0);
    }

    .contact-info {
        margin-bottom: 0;
    }

    .map-container {
        height: auto;
    }

    /* 视频弹窗 */
    .video-modal-content {
        width: 95%;
        margin: 0 10px;
    }

    .video-modal-close {
        top: -35px;
        font-size: 25px;
    }

    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
        grid-template-rows: repeat(6, 1fr);
        margin: 30px auto;
    }
}

/* 480px及以下 - 小屏幕优化 */
@media (max-width: 480px) {
    .tab-navigation {
        margin-top: 3%;
        padding: 0 10px;
        gap: 4px;
        justify-content: center;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }

    .tab-navigation::-webkit-scrollbar {
        display: none;
    }

    .tab-item {
        padding: 6px 16px;
        font-size: 0.85rem;
        flex-shrink: 0;
    }

    .tab-item.active::after {
        width: 8px;
        height: 8px;
    }

    .products-grid {
        display: grid;
        grid-template-columns: 1fr;
    }

    .specs-top {
        height: 180px;
    }

    .slide-title {
        font-size: 2rem;
    }

    .slide-subtitle {
        font-size: 0.9rem;
    }

    .slide-btn {
        padding: 10px 25px;
        font-size: 0.9rem;
    }

    .carousel-arrow {
        width: 35px;
        height: 35px;
        font-size: 18px;
    }

    .tab-item {
        padding: 10px 20px;
        font-size: 0.8rem;
    }

    .tech-title {
        font-size: 1.3rem;
    }

    .about-section,
    .tech-section,
    .contact-us-section {
        padding: 40px 0;
    }

    .more-btn {
        padding: 10px 25px;
        font-size: 0.85rem;
    }

    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: repeat(9, 1fr);
    }

    .partner-item {
        padding: 10px;
    }

    .modal-long-press-hint {
        font-size: 12px;
    }
}

/* ========================================
   额外的响应式样式整理
======================================== */

/* 大屏幕悬浮显示 */
@media (min-width: 981px) {
    .modal-img-container:hover .modal-hover-description {
        transform: translateY(0);
    }
}

/* 小屏幕显示简介提示 */
@media (max-width: 1024px) {
    .modal-long-press-hint {
        display: block;
        pointer-events: auto;
        z-index: 10004;
    }
}

/* 大屏幕隐藏简介按钮 */
@media (min-width: 1025px) {
    .modal-long-press-hint {
        display: none !important;
    }
}

/* 768px及以下 - 瀑布流和介绍页面样式 */
@media (max-width: 768px) {

    /* 瀑布流样式 */
    .waterfall-container {
        column-count: 2;
        column-gap: 15px;
        padding: 15px;
    }

    /* 介绍页面样式 */
    .introduction-header {
        height: 50vh;
    }

    .introduction-title {
        font-size: 2rem;
    }

    .introduction-text {
        font-size: 1rem;
        padding: 0 10px;
    }

    .introduction-content {
        padding: 30px 15px;
    }

    .back-button {
        top: 15px;
        left: 15px;
        padding: 6px 12px;
        font-size: 13px;
    }
}

/* 480px及以下 - 小屏幕瀑布流和介绍页面优化 */
@media (max-width: 480px) {

    /* 瀑布流样式 */
    .waterfall-container {
        column-count: 1;
        column-gap: 10px;
        padding: 10px;
    }

    /* 介绍页面样式 */
    .introduction-header {
        height: 30vh;
    }

    .introduction-title {
        font-size: 1.8rem;
        margin-bottom: 20px;
    }

    .introduction-content {
        padding: 25px 15px;
    }
}