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

body {
    font-family: "Microsoft YaHei", "SimSun", Arial, sans-serif;
    font-size: 14px;
    color: #333;
    line-height: 1.6;
    background-color: #fff;
}

/* 容器样式 - 主内容1600px宽，自适应 */
.container {
    max-width: 1600px;
    width: 100%;
    margin: 0 auto;
    padding: 0 20px;
}

/* 页头区 */
.header {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: relative;
}

/* 顶部通条 */
.top-bar {
    background-color: #172988;
    padding: 8px 0;
    width: 100%;
}

.top-bar .container {
    display: flex;
    align-items: center;
}

.welcome-text {
    color: #fff;
    font-size: 14px;
}

/* Logo和服务热线区 */
.header-main {
    padding: 20px 0;
    background-color: #fff;
    position: relative;
}

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

.branding {
    display: flex;
    align-items: center;
    gap: 40px;
}

.logo img {
    height: 72px;
    width: auto;
    max-width: 100%;
}

.logo {
    display: flex;
    align-items: center;
}

.header-slogan {
    display: flex;
    flex-direction: column;
    justify-content: center;
    color: #172988;
    font-weight: 700;
    gap: 6px;
    text-align: left;
}

.header-slogan .slogan-line {
    font-size: 18px;
    line-height: 1.35;
}

.service-hotline {
    display: flex;
    align-items: center;
    gap: 10px;
}

.hotline-icon {
    height: 48px;
    width: auto;
}

.hotline-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.hotline-label {
    font-size: 16px;
    color: #172988;
    font-weight: 700;
}

.hotline-number {
    font-size: 26px;
    color: #172988;
    font-weight: 800;
}

/* 导航条 */
.main-nav {
    background-color: #172988;
    width: 100%;
}

.main-nav .container {
    padding: 0;
}

.nav-menu {
    display: flex;
    list-style: none;
    justify-content: center;
    flex-wrap: wrap;
}

.nav-item {
    position: relative;
    flex: 1;
    min-width: 120px;
    text-align: center;
}

.nav-link {
    display: block;
    padding: 15px 20px;
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    transition: background-color 0.3s;
    position: relative;
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 3px;
    background-color: #e50011;
    opacity: 0;
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.nav-link:hover::after,
.nav-item:hover .nav-link::after,
.nav-item.active .nav-link::after {
    opacity: 1;
    transform: scaleX(1);
}

/* 二级菜单 */
.submenu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #fff;
    list-style: none;
    width: 100%;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.nav-item.has-submenu:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

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

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

.submenu a {
    display: block;
    padding: 12px 20px;
    color: #333;
    text-decoration: none;
    font-size: 16px;
    transition: all 0.3s;
}

.submenu a:hover {
    background-color: #172988;
    color: #fff;
    padding-left: 25px;
}

/* 轮播图 */
.banner-slider {
    width: 100%;
    position: relative;
    overflow: hidden;
    background-color: #000;
}

.slider-container {
    position: relative;
    width: 100%;
    margin: 0;
}

.slider-wrapper {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 40%; /* 宽高比 5:2 */
    overflow: hidden;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.6s ease-in-out;
}

.slide.active {
    opacity: 1;
}

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

/* 轮播按钮 */
.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(255, 255, 255, 0.4);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 30px;
    color: #172988;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    padding: 0;
    opacity: 0;
    visibility: hidden;
}

.banner-slider:hover .slider-btn {
    opacity: 1;
    visibility: visible;
}

.slider-btn:hover {
    background-color: rgba(255, 255, 255, 0.6);
    color: #e50011;
}

.prev-btn {
    left: 20px;
}

.next-btn {
    right: 20px;
}

/* 指示器 */
.slider-indicators {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 10;
}

.indicator {
    width: 40px;
    height: 3px;
    border-radius: 2px;
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s;
}

.indicator.active {
    background-color: #e50011;
}

.indicator:hover {
    background-color: rgba(255, 255, 255, 0.8);
}

/* 产品区 */
.products-section {
    width: 100%;
    padding: 0;
    background-image: url('../img/in01.jpg');
    background-size: cover;
    background-position: center bottom;
    background-repeat: no-repeat;
    background-attachment: local;
}

.products-bg {
    width: 100%;
    position: relative;
    padding-top: 80px;
    padding-bottom: 80px;
}

.products-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 40px;
    flex-wrap: wrap;
}

.products-left {
    flex: 1;
    min-width: 300px;
}

.products-title-area {
    display: flex;
    align-items: flex-end;
    gap: 15px;
    margin-bottom: 10px;
}

.products-title {
    font-size: 32px;
    font-weight: bold;
    color: #172988;
    margin: 0;
    line-height: 1;
}

.title-divider {
    width: 2px;
    height: 32px;
    background-color: #e60f1f;
    flex-shrink: 0;
}

.products-title-en {
    font-size: 16px;
    color: #888888;
    font-weight: normal;
    line-height: 1;
    padding-bottom: 0;
    letter-spacing: 2px;
}

.products-description {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
    margin: 0;
}

.products-right {
    flex: 1;
    min-width: 300px;
}

.product-categories {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.product-category-item {
    width: 100%;
}

.category-box {
    border: 1px solid #172988;
    padding: 0 20px;
    text-align: center;
    background-color: #fff;
    transition: all 0.3s;
    cursor: pointer;
    height: 71px; /* 标题32px + 下边距10px + 描述28.8px ≈ 71px */
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    min-width: 0; /* 防止文字溢出 */
    word-wrap: break-word;
    text-decoration: none;
    color: inherit;
}

.category-box:hover {
    background-color: #172988;
    border-color: #172988;
    box-shadow: 0 4px 12px rgba(23, 41, 136, 0.2);
    transform: translateY(-3px);
}

.category-box h3 {
    font-size: 18px;
    color: #172988;
    margin: 0;
    font-weight: bold;
    transition: color 0.3s;
    line-height: 1.2;
    white-space: nowrap; /* 防止换行 */
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

.category-box:hover h3 {
    color: #fff;
}

.category-en {
    font-size: 12px;
    color: #172988;
    transition: color 0.3s;
    line-height: 1;
    white-space: nowrap; /* 防止换行 */
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

.category-box:hover .category-en {
    color: #fff;
}

/* 产品列表 */
.products-section .product-list-wrapper,
.product-list-wrapper {
    width: 100%;
    margin-top: 40px;
}

.product-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.product-item {
    background-color: #fff;
    padding: 10px;
    border-radius: 4px;
    transition: all 0.3s;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
}

.product-item:hover {
    background-color: #172988;
}

.product-image {
    width: 100%;
    overflow: hidden;
    margin-bottom: 10px;
    border-radius: 2px;
    background-color: #f9f9f9;
    display: block;
    position: relative;
}

.product-image img {
    width: 100%;
    height: auto;
    object-fit: contain;
    transition: transform 0.3s;
    display: block;
}

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

.product-info {
    display: flex !important;
    flex-direction: row !important;
    justify-content: space-between !important;
    align-items: center !important;
    padding: 0;
    min-height: 40px;
    flex-wrap: nowrap !important;
    gap: 10px;
    width: 100%;
}

.product-title {
    font-size: 16px;
    color: #333;
    margin: 0;
    font-weight: bold;
    flex: 1 1 0 !important;
    transition: color 0.3s;
    line-height: 1.2;
    min-width: 0 !important;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap !important;
    text-align: left;
    display: block;
}

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

.product-arrow {
    flex: 0 0 auto !important;
    flex-shrink: 0 !important;
    margin-left: 0;
    display: flex !important;
    align-items: center;
    justify-content: center;
}

.arrow-circle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background-color: transparent;
    border: 1px solid #172988;
    color: #172988;
    font-size: 16px;
    transition: all 0.3s;
}

.product-item:hover .arrow-circle {
    background-color: transparent;
    border-color: #e50011;
    color: #e50011;
}

/* 理由区 */
.reasons-section {
    padding: 80px 0;
    background-color: #fff;
    margin-top: 0;
}

.reasons-content {
    margin-bottom: 40px;
}

.reasons-title-area {
    display: flex;
    align-items: flex-end;
    gap: 15px;
    margin-bottom: 10px;
}

.reasons-title {
    font-size: 32px;
    font-weight: bold;
    color: #172988;
    margin: 0;
    line-height: 1;
}

.reasons-title-en {
    font-size: 16px;
    color: #888888;
    font-weight: normal;
    line-height: 1;
    padding-bottom: 0;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.reasons-description {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
    margin: 0;
}

.reasons-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.reason-item {
    display: flex;
    background-color: #fff;
    border-radius: 4px;
    overflow: hidden;
    transition: all 0.3s;
    cursor: pointer;
    align-items: stretch;
}

.reason-left {
    width: 35%;
    background-color: #172988;
    color: #fff;
    padding: 30px;
    display: flex;
    align-items: center;
    transition: background-color 0.3s;
    position: relative;
    overflow: hidden;
}

.reason-number {
    position: absolute;
    font-size: 180px;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.15);
    line-height: 1;
    top: 0;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    z-index: 0;
    pointer-events: none;
    font-family: Arial, "Microsoft YaHei", sans-serif;
    letter-spacing: -5px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.reason-item:hover .reason-left {
    background-color: #e50011;
}

.reason-content-wrapper {
    width: 100%;
    position: relative;
    z-index: 1;
    text-align: center;
}

.reason-title {
    font-size: 24px;
    font-weight: bold;
    color: #fff;
    margin: 0 0 15px 0;
    line-height: 1.3;
}

.reason-text {
    font-size: 16px;
    color: #fff;
    line-height: 1.6;
    margin: 0;
}

.reason-right {
    width: 65%;
    overflow: hidden;
    display: flex;
    align-items: stretch;
    position: relative;
}

.reason-right::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.5s;
    z-index: 1;
    pointer-events: none;
}

.reason-item:hover .reason-right::before {
    left: 100%;
}

.reason-right img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s;
}

.reason-item:hover .reason-right img {
    transform: scale(1.05);
}

/* 简介区 */
.intro-section {
    width: 100%;
    position: relative;
    overflow: hidden;
}

.intro-mobile-image {
    display: none;
    width: 100%;
}

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

.intro-content-wrapper {
    display: flex;
    align-items: flex-start;
    position: relative;
    z-index: 2;
    gap: 40px;
    padding-top: 60px;
    padding-bottom: 40px;
    min-height: 300px;
}

.intro-title {
    font-size: 32px;
    font-weight: bold;
    color: #333;
    margin: 0 0 25px 0;
    line-height: 1;
}

.intro-content-wrapper {
    display: flex;
    align-items: flex-end;
    position: relative;
    z-index: 2;
    gap: 40px;
    padding-top: 0;
    padding-bottom: 0;
    min-height: 300px;
}

.intro-left-wrapper {
    width: 60%;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: relative;
}

.intro-left {
    flex: 1;
    padding: 30px 0 40px 0;
    background-color: #fff;
    border-radius: 4px;
    position: relative;
    z-index: 2;
}

.intro-company-name {
    font-size: 24px;
    font-weight: bold;
    color: #172988;
    margin: 0 0 15px 0;
    line-height: 1.3;
}

.intro-slogan {
    font-size: 18px;
    font-weight: normal;
    color: #e50011;
    margin: 0 0 20px 0;
    line-height: 1.5;
}

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

.intro-text p {
    margin: 0 0 15px 0;
    text-indent: 2em;
}

.intro-text p:last-child {
    margin-bottom: 0;
}

.intro-detail-btn {
    display: inline-block;
    margin-top: 25px;
    margin-bottom: 60px;
    padding: 12px 30px;
    background-color: #172988;
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    font-weight: normal;
    border-radius: 25px;
    transition: background-color 0.3s, transform 0.2s;
}

.intro-detail-btn:hover {
    background-color: #0f1f6b;
    transform: translateY(-2px);
}

.intro-right {
    width: 40%;
    min-height: 150px;
    position: relative;
    overflow: visible;
    background-image: url('../img/gsjj.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.intro-content-wrapper::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 60%;
    right: calc((100vw - 100%) / -2);
    background-image: url('../img/gsjj.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 1;
}

.intro-bg-bottom {
    background-color: #172988;
    height: 150px;
    position: relative;
    overflow: visible;
    display: flex;
    align-items: center;
    z-index: 1;
}

.intro-bg-bottom::before {
    content: '';
    position: absolute;
    top: 0;
    left: calc((100vw - 100%) / -2);
    right: 0;
    width: calc(100% + (100vw - 1600px) / 2);
    min-width: 60%;
    height: 150px;
    background-color: #172988;
    z-index: -1;
}

.intro-bg-bottom::after {
    content: '';
    position: absolute;
    top: 0;
    left: 100%;
    right: calc((100vw - 100%) / -2);
    width: calc(40% + (100vw - 1600px) / 2);
    min-width: 40%;
    height: 150px;
    background-color: #172988;
    z-index: -1;
}

.intro-stats {
    display: flex;
    justify-content: space-around;
    align-items: center;
    width: 100%;
    height: 150px;
    gap: 30px;
    padding: 0 40px;
    position: relative;
    z-index: 2;
}


.stat-item {
    text-align: center;
    flex: 1;
    position: relative;
    z-index: 2;
}

.stat-number-wrapper {
    position: relative;
    display: inline-block;
    margin-bottom: 10px;
}

.stat-number {
    font-size: 48px;
    font-weight: bold;
    color: #fff;
    line-height: 1;
    display: inline-block;
}

.stat-unit {
    position: absolute;
    top: 0;
    right: -20px;
    font-size: 18px;
    font-weight: normal;
    color: #fff;
    line-height: 1;
}

.stat-label {
    font-size: 16px;
    color: #fff;
    opacity: 0.9;
}

/* 主内容区 */
.main-content {
    min-height: 600px;
    padding: 40px 0;
}

.content-wrapper {
    background-color: #fff;
    padding: 40px;
    border-radius: 4px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.content-wrapper h1 {
    font-size: 28px;
    color: #172988;
    margin-bottom: 20px;
    text-align: center;
}

.content-wrapper p {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
}

/* 应用区 */
.application-section {
    position: relative;
    padding: 80px 0;
    background-image: url('../img/yyly.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    overflow: hidden;
}

.application-title-area {
    display: flex;
    align-items: flex-end;
    gap: 15px;
    margin-bottom: 10px;
}

.application-title {
    font-size: 32px;
    font-weight: bold;
    color: #172988;
    margin: 0;
    line-height: 1;
}

.title-divider {
    width: 2px;
    height: 32px;
    background-color: #e60f1f;
    flex-shrink: 0;
}

.application-title-en {
    font-size: 16px;
    color: #888888;
    font-weight: normal;
    line-height: 1;
    padding-bottom: 0;
}

.application-description {
    font-size: 16px;
    color: #666;
    margin-bottom: 40px;
    line-height: 1.6;
}

.application-content {
    margin-top: 40px;
}

.application-main-image {
    width: 100%;
    margin-bottom: 0;
    overflow: hidden;
    border-radius: 0;
    position: relative;
    display: block;
}

.application-main-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(to right, rgba(0, 84, 163, 1) 0%, rgba(0, 84, 163, 1) 50%, rgba(0, 84, 163, 0) 100%);
    z-index: 2;
    pointer-events: none;
}

.application-main-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: opacity 0.3s ease;
    position: relative;
    z-index: 1;
    object-fit: contain;
}

.application-text-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 50%;
    height: 100%;
    z-index: 3;
    pointer-events: none;
    display: flex;
    align-items: center;
    padding: 40px;
    box-sizing: border-box;
}

.application-text-content {
    color: #fff;
    font-size: 16px;
    line-height: 1.8;
}

.application-text-title {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
}

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

.application-text-content p:last-child {
    margin-bottom: 0;
}

/* 新闻区 */
.news-section {
    padding: 80px 0;
    background-color: #fff;
}

.news-title-area {
    display: flex;
    align-items: flex-end;
    gap: 15px;
    margin-bottom: 10px;
}

.news-title {
    font-size: 32px;
    font-weight: bold;
    color: #172988;
    margin: 0;
    line-height: 1;
}

.news-title-en {
    font-size: 16px;
    color: #888;
    font-weight: normal;
    line-height: 1;
    padding-bottom: 0;
}

.news-description {
    font-size: 16px;
    color: #666;
    margin-bottom: 40px;
    line-height: 1.6;
}

.news-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    align-items: stretch;
}

.news-left {
    background-color: #f6f6f6;
    padding: 0;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s;
}

.news-left-image img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 6px;
}

.news-left-title {
    font-size: 20px;
    font-weight: 700;
    color: #333;
    margin: 16px 0 8px 0;
    padding: 0 20px;
}

.news-left-meta {
    font-size: 14px;
    color: #888;
    margin-bottom: 10px;
    padding: 0 20px;
}

.news-left-desc {
    font-size: 15px;
    color: #555;
    line-height: 1.7;
    padding: 0 20px 20px 20px;
    flex: 1;
}

.news-right {
    display: flex;
    flex-direction: column;
    gap: 12px;
    justify-content: space-between;
}

.news-item {
    display: grid;
    grid-template-columns: 100px 1fr;
    background-color: #f6f6f6;
    border-radius: 8px;
    overflow: hidden;
    min-height: 100px;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s;
}

.news-item-date {
    background-color: #172988;
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px 10px;
    gap: 6px;
}

.news-item-day {
    font-size: 26px;
    font-weight: 800;
    line-height: 1;
}

.news-item-ym {
    font-size: 13px;
    letter-spacing: 0.5px;
}

.news-item-body {
    padding: 20px 16px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.news-item-title {
    font-size: 16px;
    font-weight: 700;
    color: #333;
    margin: 0 0 6px 0;
}

.news-item-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.application-items {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 0;
}

.application-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 10px;
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: 0;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    border-right: 1px solid rgba(0, 0, 0, 0.3);
    position: relative;
    margin: 0;
}

.application-item:last-child {
    border-right: none;
}

.application-item:hover,
.application-item.active {
    background-color: #e50011;
    margin: -15px;
    padding: 35px 25px;
    z-index: 10;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
}

.application-item:hover .application-item-image img,
.application-item.active .application-item-image img {
    filter: brightness(0) invert(1);
}

.application-item:hover .application-item-text,
.application-item.active .application-item-text {
    color: #fff;
}

.application-item-image {
    width: 100%;
    margin-bottom: 15px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.application-item-image img {
    max-width: 100%;
    height: auto;
    display: block;
    transition: filter 0.3s ease;
}

.application-item-text {
    font-size: 16px;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

/* 页脚 */
.footer {
    background-color: #172988;
    color: #fff;
    padding: 60px 0 0 0;
    margin-top: 0;
    position: relative;
    overflow: hidden;
}

.footer-bg {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 600px;
    min-width: 300px;
    height: 100%;
    background-image: url('../img/fbj.png');
    background-size: auto 100%;
    background-repeat: no-repeat;
    background-position: right center;
    z-index: 0;
    transform: translateX(40px);
    opacity: 0.1;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    position: relative;
    z-index: 1;
    gap: 80px;
}

.footer-left {
    flex: 0 0 auto;
}

.footer-logo {
    max-width: 280px;
    height: auto;
    margin-bottom: 20px;
}

.footer-info {
    color: #fff;
    line-height: 1.8;
}

.footer-company-name {
    font-size: 26px;
    font-weight: bold;
    margin-bottom: 10px;
}

.footer-info p {
    font-size: 16px;
    margin: 5px 0;
}

.footer-qrcode {
    text-align: center;
    flex: 0 0 auto;
    align-self: center;
}

.footer-right {
    flex: 0 0 auto;
}

.footer-menus {
    display: flex;
    gap: 80px;
}

.footer-menu-column {
    flex: 0 0 auto;
}

.qrcode-image {
    width: 130px;
    height: 130px;
    background-color: #fff;
    padding: 10px;
    margin-bottom: 10px;
}

.qrcode-text {
    font-size: 16px;
    color: #fff;
    margin: 0;
}

.footer-menu-title {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #fff;
}

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

.footer-menu-list li {
    margin-bottom: 10px;
}

.footer-menu-list a {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    transition: color 0.3s;
}

.footer-menu-list a:hover {
    color: #e50011;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 0;
    margin-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    z-index: 1;
    height: 70px;
}

.footer-copyright {
    color: #fff;
    font-size: 14px;
}

.footer-copyright p {
    margin: 0;
}

.footer-support {
    display: flex;
    gap: 30px;
    color: #fff;
    font-size: 14px;
}

.footer-support p {
    margin: 0;
}

.footer-support a {
    color: #fff;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-support a:hover {
    color: #e50011;
    text-decoration: underline;
}

/* 页面横幅 */
.page-banner {
    position: relative;
    width: 100%;
    height: 300px;
    overflow: hidden;
    background-color: #172988;
}

.page-banner-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../img/n.jpg');
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    z-index: 0;
}

.page-banner .container {
    position: relative;
    z-index: 1;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.page-banner-title {
    font-size: 48px;
    font-weight: bold;
    color: #fff;
    margin: 0;
    text-align: center;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* 面包屑导航 */
.breadcrumb {
    padding: 8px 0;
    margin: 0 0 10px 0;
    font-size: 14px;
    color: #666;
}

.breadcrumb a {
    color: #172988;
    text-decoration: none;
}

.breadcrumb a:hover {
    color: #e50011;
    text-decoration: underline;
}

.breadcrumb .separator {
    margin: 0 8px;
    color: #999;
}

/* 产品列表页样式 */
.product-list-wrapper {
    display: flex;
    gap: 20px;
    margin-top: 20px;
    padding-bottom: 40px;
    align-items: stretch;
}

.product-sidebar {
    flex: 0 0 250px;
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    padding: 20px;
}

.sidebar-title {
    font-size: 20px;
    font-weight: bold;
    color: #172988;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e50011;
}

.category-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.category-item {
    margin-bottom: 8px;
}

.category-item a {
    display: block;
    padding: 10px 15px;
    color: #333;
    font-size: 16px;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.3s;
}

.category-item a:hover {
    background-color: #f5f5f5;
    color: #e50011;
}

.category-item.active a {
    background-color: #172988;
    color: #fff;
}

.product-list-content {
    flex: 1;
}

.product-list-content .product-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.product-list-content .product-item {
    background-color: #fff;
    padding: 10px;
    border-radius: 4px;
    border: 1px solid #e0e0e0;
    transition: all 0.3s;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.product-list-content .product-item:hover {
    background-color: #172988;
}

.product-list-content .product-item a {
    text-decoration: none;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.product-list-content .product-image {
    width: 100%;
    overflow: hidden;
    margin-bottom: 10px;
    border-radius: 2px;
    background-color: #f9f9f9;
    display: block;
    position: relative;
}

.product-list-content .product-image img {
    width: 100%;
    height: auto;
    object-fit: contain;
    transition: transform 0.3s;
    display: block;
}

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

.product-list-content .product-info {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    gap: 4px;
    padding: 0;
    min-height: 40px;
    width: 100%;
}

.product-list-content .product-title {
    font-size: 16px;
    color: #333;
    margin: 0 0 4px 0;
    font-weight: bold;
    flex: 1;
    transition: color 0.3s;
    line-height: 1.4;
    text-align: center !important;
    width: 100%;
}

.product-list-content .product-item:hover .product-title {
    color: #fff;
}

.product-list-content .product-title a {
    display: block;
    text-align: center !important;
    color: inherit;
    width: 100%;
}

.product-list-content .product-title a,
.product-list-content .product-title {
    text-align: center !important;
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 30px;
}

.page-item {
    display: inline-block;
    padding: 8px 15px;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    color: #333;
    text-decoration: none;
    background: #fff;
    transition: all 0.3s;
}

.page-item:hover {
    border-color: #e50011;
    color: #e50011;
}

.page-item.active {
    background: #e50011;
    border-color: #e50011;
    color: #fff;
}

/* 产品详情页样式 */
.product-details-wrapper {
    display: flex;
    gap: 20px;
    margin-top: 20px;
    padding-bottom: 40px;
}

.product-details-content {
    flex: 1;
}

.product-details-main {
    display: flex;
    gap: 40px;
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    padding: 30px;
    margin-bottom: 20px;
    align-items: flex-start;
}

.product-images {
    flex: 0 0 45%;
    max-width: 45%;
}

.product-main-image {
    width: 100%;
    aspect-ratio: 1 / 1;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 15px;
    background: #f5f5f5;
}

.product-main-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    cursor: zoom-in;
}

.product-thumbnails {
    display: flex;
    gap: 10px;
}

.thumbnail {
    width: 80px;
    height: 80px;
    border: 2px solid #e0e0e0;
    border-radius: 4px;
    cursor: pointer;
    object-fit: cover;
    transition: all 0.3s;
}

.thumbnail:hover,
.thumbnail.active {
    border-color: #e50011;
}

.article-product-info {
    width: 100% !important;
    align-items: flex-start !important;
}

.article-product-info .product-title,
.article-product-info .article-meta,
.article-product-info .article-content {
    text-align: left;
}

.product-details-content .product-info {
    flex: 1;
    display: flex !important;
    flex-direction: column !important;
    align-items: flex-start;
    justify-content: flex-start;
    padding-left: 20px;
    gap: 0;
}

.product-details-content .product-title {
    font-size: 30px;
    font-weight: bold;
    color: #333;
    margin: 0 0 25px 0;
    padding-bottom: 15px;
    border-bottom: 1px solid #e0e0e0;
    text-align: left;
    width: 100%;
    line-height: 1.5;
    display: block;
    min-height: auto;
    overflow: visible;
}

.product-details-content .product-summary {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
    margin: 0 0 30px 0;
    width: 100%;
    display: block;
}

.product-detail-block {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    padding: 20px;
    margin-top: 20px;
}

.product-detail-block h3 {
    font-size: 21px;
    font-weight: bold;
    color: #333;
    margin: 0 0 12px 0;
}

.product-detail-block h4 {
    font-size: 17px;
    font-weight: bold;
    color: #333;
    margin: 18px 0 8px 0;
}

.product-detail-block p {
    color: #666;
    line-height: 1.8;
    margin: 0 0 10px 0;
    font-size: 16px;
}

.product-detail-block ul {
    padding-left: 20px;
    margin: 0;
    color: #666;
    line-height: 1.8;
    font-size: 16px;
}

.product-detail-block ul li {
    margin-bottom: 6px;
}

/* 单页内容样式 */
.page-content-wrapper {
    margin-top: 20px;
    padding-bottom: 40px;
}

.page-content {
    width: 100%;
}

.page-content.page-single {
    flex: 1;
    display: flex;
    flex-direction: column;
    margin-top: 0;
    width: 100%;
}

.page-single .page-detail-block {
    flex: 1;
    height: 100%;
    display: flex;
    flex-direction: column;
    margin-top: 0;
    padding: 36px 30px;
    width: 100%;
}

.page-single-wrapper {
    margin-top: 0;
    padding-bottom: 30px;
}

.page-single .page-text-content {
    line-height: 1.5;
}

.page-single .page-text-content p {
    margin: 0 0 10px 0;
}

.gallery-content {
    flex: 1;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.gallery-item {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    overflow: hidden;
    transition: all 0.3s;
}

.gallery-item:hover {
    border-color: #e50011;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.gallery-img {
    width: 100%;
    height: 220px;
    object-fit: contain;
    background: #f7f8fa;
    display: block;
    cursor: pointer;
    transition: transform 0.3s;
}

.gallery-item:hover .gallery-img {
    transform: scale(1.02);
}

.gallery-title {
    padding: 12px 15px;
    font-size: 15px;
    color: #333;
    text-align: center;
    background: #f9f9f9;
    border-top: 1px solid #e0e0e0;
    font-weight: 500;
}

.gallery-item:hover .gallery-title {
    color: #e50011;
    background: #fff5f5;
}

.image-modal-title {
    width: 100%;
    background: rgba(0, 0, 0, 0.8);
    color: #fff;
    padding: 14px 20px;
    text-align: center;
    font-size: 18px;
    font-weight: 700;
    border-radius: 0 0 6px 6px;
    margin-top: 0;
}

.page-detail-block {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    padding: 30px;
    margin-top: 20px;
}

.page-detail-block h1 {
    font-size: 28px;
    font-weight: bold;
    color: #333;
    margin: 0 0 20px 0;
    padding-bottom: 15px;
    border-bottom: 2px solid #e50011;
}

.page-detail-block h2 {
    font-size: 22px;
    font-weight: bold;
    color: #333;
    margin: 25px 0 15px 0;
}

.page-detail-block h3 {
    font-size: 18px;
    font-weight: bold;
    color: #333;
    margin: 20px 0 12px 0;
}

.page-text-content {
    color: #666;
    line-height: 1.6;
    font-size: 16px;
}

.page-text-content p {
    margin: 0 0 12px 0;
    color: #666;
    text-align: justify;
}

.page-text-content p:last-child {
    margin-bottom: 0;
}

.page-text-content ul,
.page-text-content ol {
    margin: 15px 0;
    padding-left: 30px;
    color: #666;
}

.page-text-content ul li,
.page-text-content ol li {
    margin-bottom: 8px;
    line-height: 1.8;
}

/* 文章列表样式 */
.article-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.article-item {
    background: linear-gradient(135deg, #ffffff 0%, #f9fbff 100%);
    border: 1px solid #e6eaf2;
    border-radius: 6px;
    padding: 16px 18px 18px 18px;
    transition: all 0.25s ease;
    position: relative;
    overflow: hidden;
}

.article-item::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, #172988 0%, #e50011 100%);
    opacity: 0.6;
    transition: opacity 0.25s ease;
}

.article-item:hover {
    border-color: #d5deff;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.article-item:hover::before {
    opacity: 1;
}

.article-item a {
    text-decoration: none;
    color: inherit;
    display: block;
}

.article-title {
    font-size: 18px;
    font-weight: bold;
    color: #333;
    margin: 0 0 8px 0;
    line-height: 1.5;
}

.article-item:hover .article-title {
    color: #e50011;
}

.article-meta {
    display: flex;
    gap: 10px;
    font-size: 13px;
    color: #777;
    margin: 0 0 10px 0;
    align-items: center;
    flex-wrap: wrap;
}

.article-date {
    color: #999;
    padding: 4px 8px;
    background: #f2f4f8;
    border-radius: 12px;
}

.article-cat,
.article-category {
    color: #172988;
    font-weight: 600;
    padding: 4px 10px;
    background: rgba(23, 41, 136, 0.08);
    border-radius: 12px;
}

.article-desc {
    margin: 0;
    color: #666;
    line-height: 1.7;
    font-size: 14px;
}

.article-content {
    margin-top: 20px;
    color: #666;
    line-height: 1.8;
    font-size: 16px;
    text-align: left;
}

.article-content p {
    margin: 0 0 15px 0;
    color: #666;
    text-align: left;
}

.article-content p:last-child {
    margin-bottom: 0;
}

/* 大图弹窗 */
.image-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: 20px;
}

.image-modal.open {
    display: flex;
}

.image-modal-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.image-modal-img {
    max-width: 90vw;
    max-height: calc(90vh - 60px);
    object-fit: contain;
    border-radius: 6px 6px 0 0;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    display: block;
}

.image-modal-close {
    position: absolute;
    top: -12px;
    right: -12px;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.image-modal-close:hover {
    background: rgba(0, 0, 0, 0.8);
}

.product-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #e0e0e0;
}

.product-code,
.product-stock {
    font-size: 14px;
    color: #666;
}

.product-stock {
    color: #52c41a;
}

.product-price-box {
    margin-bottom: 25px;
    padding: 20px;
    background: #f5f5f5;
    border-radius: 4px;
}

.price-label {
    font-size: 14px;
    color: #666;
    margin-bottom: 8px;
}

.price-main {
    font-size: 36px;
    color: #e50011;
    font-weight: bold;
}

.price-main .price-unit {
    font-size: 18px;
    font-weight: normal;
}

.price-note {
    font-size: 12px;
    color: #999;
    margin-top: 8px;
}

.product-specs {
    margin-bottom: 25px;
}

.product-specs h3 {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 12px;
    color: #333;
}

.spec-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.spec-list li {
    padding: 8px 0;
    border-bottom: 1px dashed #e0e0e0;
    color: #666;
    font-size: 14px;
}

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

.product-details-content .product-actions {
    display: flex;
    flex-direction: row;
    gap: 15px;
    margin-top: 0;
    width: 100%;
    align-items: center;
    flex-shrink: 0;
}

.btn-contact,
.btn-quote {
    padding: 12px 38px;
    min-width: 160px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-contact {
    background: #e50011;
    color: #fff;
}

.btn-contact:hover {
    background: #c4000e;
}

.btn-quote {
    background: #172988;
    color: #fff;
}

.btn-quote:hover {
    background: #0f1f6a;
}

/* 产品详情标签页 */
.product-tabs {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    padding: 20px;
}

.tab-nav {
    display: flex;
    gap: 0;
    border-bottom: 2px solid #e0e0e0;
    margin-bottom: 20px;
}

.tab-btn {
    padding: 12px 25px;
    border: none;
    background: transparent;
    color: #666;
    font-size: 16px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all 0.3s;
}

.tab-btn:hover {
    color: #e50011;
}

.tab-btn.active {
    color: #e50011;
    border-bottom-color: #e50011;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

.tab-pane h3 {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #333;
}

.tab-pane h4 {
    font-size: 16px;
    font-weight: bold;
    margin: 20px 0 10px 0;
    color: #333;
}

.tab-pane p {
    line-height: 1.8;
    color: #666;
    margin-bottom: 15px;
}

.tab-pane ul {
    padding-left: 20px;
    line-height: 1.8;
    color: #666;
}

.tab-pane ul li {
    margin-bottom: 8px;
}

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

.spec-table tr {
    border-bottom: 1px solid #e0e0e0;
}

.spec-table td {
    padding: 12px 15px;
    color: #666;
}

.spec-table td:first-child {
    width: 150px;
    color: #333;
    font-weight: 500;
}

.application-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.application-item {
    padding: 15px;
    background: #f5f5f5;
    border-radius: 4px;
}

.application-item h4 {
    font-size: 16px;
    font-weight: bold;
    color: #172988;
    margin: 0 0 8px 0;
}

.application-item p {
    margin: 0;
    color: #666;
    line-height: 1.6;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 50px;
    height: 50px;
    background-color: #172988;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.back-to-top:hover {
    background-color: #e50011;
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

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

.back-to-top svg {
    width: 24px;
    height: 24px;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .container {
        padding: 0 15px;
    }
    
    .nav-item {
        min-width: 100px;
    }
    
    .nav-link {
        padding: 15px 15px;
        font-size: 15px;
    }
    
    /* 产品区中等屏幕适配 */
    .products-title {
        font-size: 28px;
    }
    
    .title-divider {
        height: 28px;
    }
    
    .category-box {
        height: 67px; /* 标题28px + 下边距10px + 描述28.8px ≈ 67px */
        padding: 0 15px;
    }
    
    .category-box h3 {
        font-size: 16px;
    }
    
    .category-en {
        font-size: 11px;
    }
    
    /* 产品列表中等屏幕适配 */
    .product-list {
        grid-template-columns: repeat(3, 1fr);
        gap: 18px;
    }
}

@media (max-width: 992px) {
    /* 产品区平板适配 */
    .product-categories {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .products-content {
        gap: 30px;
    }
    
    .products-title {
        font-size: 26px;
    }
    
    .title-divider {
        height: 26px;
    }
    
    .category-box {
        height: 65px; /* 标题26px + 下边距10px + 描述28.8px ≈ 65px */
    }
    
    /* 产品列表平板适配 */
    .product-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.menu-icon-line {
    width: 100%;
    height: 3px;
    background-color: #172988;
    border-radius: 2px;
    transition: all 0.3s;
    display: block;
}

/* 移动端简介区样式 */
@media (max-width: 768px) {
    .intro-content-wrapper {
        flex-direction: column;
        padding-top: 0;
        gap: 0;
    }

    .intro-mobile-image {
        width: 100%;
        display: block;
        margin-bottom: 20px;
    }

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

    .intro-left-wrapper {
        width: 100%;
    }

    .intro-left {
        width: 100%;
        padding: 30px 20px 40px 20px;
    }

    .intro-detail-btn {
        margin-bottom: 20px;
    }

    .intro-right {
        display: none;
    }

    .intro-content-wrapper::after {
        display: none;
    }

    .intro-left-wrapper {
        position: relative;
    }

    .intro-bg-bottom {
        position: relative;
        width: 100vw;
        margin-left: calc((100vw - 100%) / -2);
        margin-right: calc((100vw - 100%) / -2);
        background-color: #172988;
        z-index: 1;
        padding: 30px 0;
        min-height: 180px;
    }

    .intro-bg-bottom::before {
        display: none;
    }

    .intro-bg-bottom::after {
        display: none;
    }

    .intro-stats {
        width: 100%;
        padding: 10px 20px;
        gap: 20px;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: repeat(2, 1fr);
        position: relative;
    }


    .stat-item {
        flex: none;
        position: relative;
        z-index: 2;
    }

    .stat-number {
        font-size: 32px;
    }

    .stat-unit {
        font-size: 14px;
        right: -15px;
    }

    .stat-label {
        font-size: 14px;
    }

    /* 应用区小屏手机样式 */
    .application-section {
        padding: 40px 0;
    }
    
    .application-title {
        font-size: 22px;
    }
    
    .application-title-area .title-divider {
        height: 22px;
    }
    
    .application-title-en {
        font-size: 12px;
    }
    
    .application-description {
        font-size: 13px;
        margin-bottom: 30px;
    }
    
    .application-content {
        margin-top: 30px;
    }
    
    .application-main-image {
        margin-bottom: 0;
        height: auto;
    }
    
    .application-items {
        grid-template-columns: repeat(2, 1fr);
        gap: 0;
    }
    
    .application-item {
        padding: 15px 8px;
        border-right: 1px solid rgba(0, 0, 0, 0.3);
        border-bottom: 1px solid rgba(0, 0, 0, 0.3);
        margin: 0;
    }
    
    .application-item:nth-child(2n) {
        border-right: none;
    }
    
    .application-item:nth-child(n+5) {
        border-bottom: none;
    }
    
    .application-item:hover,
    .application-item.active {
        margin: -15px;
        padding: 30px 23px;
        z-index: 10;
        box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
    }
    
    .application-item-image {
        margin-bottom: 10px;
    }
    
    .application-item-text {
        font-size: 14px;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        gap: 0;
    }
    
    .branding {
        flex-direction: row;
        gap: 40px;
        align-items: center;
    }
    
    .logo {
        text-align: left;
    }
    
    .logo img {
        height: 40px;
    }
    
    /* 当布局换行时，隐藏标语和电话区 */
    .header-slogan {
        display: none;
    }
    
    .service-hotline {
        display: none;
    }
    
    /* 显示移动端菜单按钮 */
    .mobile-menu-btn {
        display: flex;
    }
    
    /* 导航菜单默认隐藏 */
    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        z-index: 1000;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    }
    
    .main-nav.active {
        display: block;
    }
    
    /* 菜单按钮激活状态 */
    .mobile-menu-btn.active .menu-icon-line:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }
    
    .mobile-menu-btn.active .menu-icon-line:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-btn.active .menu-icon-line:nth-child(3) {
        transform: rotate(-45deg) translate(8px, -8px);
    }
    
    /* 轮播图移动端样式 */
    .slider-wrapper {
        padding-bottom: 50%; /* 移动端宽高比 2:1 */
    }
    
    .slider-btn {
        width: 40px;
        height: 40px;
        font-size: 24px;
    }
    
    .prev-btn {
        left: 10px;
    }
    
    .next-btn {
        right: 10px;
    }
    
    .slider-indicators {
        bottom: 15px;
        gap: 8px;
    }
    
    .indicator {
        width: 30px;
        height: 3px;
    }
    
    .indicator.active {
        background-color: #e50011;
    }
    
    .nav-menu {
        flex-direction: column;
    }
    
    .nav-item {
        width: 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav-item:last-child {
        border-bottom: none;
    }
    
    .submenu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background-color: rgba(255, 255, 255, 0.1);
        display: none;
        border-top: none;
    }
    
    .nav-item.has-submenu:hover .submenu,
    .nav-item.has-submenu.active .submenu {
        display: block;
    }
    
    .submenu a {
        color: #fff;
        padding-left: 40px;
    }
    
    .submenu a:hover {
        background-color: rgba(255, 255, 255, 0.2);
        padding-left: 45px;
    }
    
    .content-wrapper {
        padding: 20px;
    }
    
    .content-wrapper h1 {
        font-size: 24px;
    }
    
    /* 产品区移动端样式 */
    .products-section {
        padding: 0 0 40px 0;
    }
    
    .products-bg {
        padding-top: 40px;
        padding-bottom: 40px;
    }
    
    .products-content {
        flex-direction: column;
        gap: 30px;
    }
    
    .products-left {
        width: 100%;
        min-width: 0;
    }
    
    .products-right {
        width: 100%;
        min-width: 0;
    }
    
    .products-title {
        font-size: 24px;
    }
    
    .title-divider {
        height: 24px;
    }
    
    .products-title-en {
        font-size: 14px;
    }
    
    .products-description {
        font-size: 14px;
    }
    
    .product-categories {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .product-category-item {
        width: 100%;
    }
    
    .category-box {
        width: 100%;
        padding: 0 12px;
        height: 59px; /* 标题24px + 下边距10px + 描述25.2px ≈ 59px */
    }
    
    .category-box h3 {
        font-size: 15px;
        line-height: 1.1;
    }
    
    .category-en {
        font-size: 10px;
        line-height: 1;
    }
    
    .category-box {
        gap: 3px;
    }
    
    /* 产品列表移动端样式 */
    .product-list-wrapper {
        margin-top: 30px;
    }
    
    .product-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .product-title {
        font-size: 14px;
    }
    
    .arrow-circle {
        width: 24px;
        height: 24px;
        font-size: 14px;
    }
    
    /* 理由区移动端样式 */
    .reasons-section {
        padding: 40px 0;
    }
    
    .reasons-title {
        font-size: 24px;
    }
    
    .reasons-title-area .title-divider {
        height: 24px;
    }
    
    .reasons-title-en {
        font-size: 14px;
    }
    
    .reasons-description {
        font-size: 14px;
    }
    
    .reasons-list {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .reason-item {
        flex-direction: column;
    }
    
    .reason-left {
        width: 100%;
        padding: 20px;
    }
    
    .reason-right {
        width: 100%;
        height: 200px;
    }
    
    .reason-title {
        font-size: 20px;
    }
    
    .reason-text {
        font-size: 15px;
    }
    
    .reason-content-wrapper {
        text-align: center;
    }
    
    .reason-number {
        font-size: 120px;
        letter-spacing: -3px;
    }

    /* 简介区移动端样式 */
    .intro-content-wrapper {
        flex-direction: column;
        padding-top: 0;
        gap: 0;
    }

    .intro-mobile-image {
        width: 100%;
        display: block;
        margin-bottom: 20px;
    }

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

    .intro-left-wrapper {
        width: 100%;
    }

    .intro-left {
        width: 100%;
        padding: 30px 20px 40px 20px;
    }

    .intro-right {
        display: none;
    }

    .intro-content-wrapper::after {
        display: none;
    }

    .intro-bg-bottom {
        width: 100%;
    }

    .intro-bg-bottom::before,
    .intro-bg-bottom::after {
        display: none;
    }

    .intro-stats {
        width: 100%;
        padding: 0 20px;
        gap: 20px;
    }

    .stat-item {
        flex: 1;
    }

    .stat-number {
        font-size: 32px;
    }

    .stat-label {
        font-size: 14px;
    }

    /* 应用区移动端样式 */
    .application-section {
        padding: 60px 0;
    }
    
    .application-title {
        font-size: 24px;
    }
    
    .application-title-area .title-divider {
        height: 24px;
    }
    
    .application-title-en {
        font-size: 14px;
    }
    
    .application-description {
        font-size: 14px;
        margin-bottom: 30px;
    }
    
    .application-content {
        margin-top: 30px;
    }
    
    .application-main-image {
        margin-bottom: 0;
    }
    
    .application-items {
        grid-template-columns: repeat(3, 1fr);
        gap: 0;
    }
    
    .application-item {
        padding: 15px 10px;
        border-right: 1px solid rgba(0, 0, 0, 0.3);
        border-bottom: 1px solid rgba(0, 0, 0, 0.3);
        margin: 0;
    }
    
    .application-item:nth-child(3n) {
        border-right: none;
    }
    
    .application-item:nth-child(n+4) {
        border-bottom: none;
    }
    
    .application-item:hover,
    .application-item.active {
        margin: -15px;
        padding: 30px 25px;
        z-index: 10;
        box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
    }
    
    .application-item-image {
        margin-bottom: 10px;
    }
    
    .application-item-text {
        font-size: 14px;
    }

    /* 应用区移动端文字铺满并自适应高度 */
    .application-main-image {
        display: block;
        position: relative;
        overflow: hidden;
        height: auto;
        min-height: auto;
    }
    
    .application-main-image::before {
        width: 100%;
        height: 100%;
    }
    
    .application-main-image img {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    
    .application-text-overlay {
        position: relative;
        width: 100%;
        height: auto;
        min-height: auto;
        padding: 20px;
        align-items: flex-start;
        justify-content: flex-start;
    }

    .application-text-content {
        max-height: none;
    }

    /* 新闻区移动端样式 */
    .news-section {
        padding: 60px 0;
    }
    
    .news-title {
        font-size: 26px;
    }
    
    .news-title-area .title-divider {
        height: 26px;
    }
    
    .news-title-en {
        font-size: 14px;
    }
    
    .news-description {
        font-size: 14px;
    }
    
    .news-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .news-left {
        padding: 0;
    }
    
    .news-left-title {
        font-size: 18px;
        padding: 0 16px;
    }
    
    .news-left-desc {
        font-size: 14px;
        padding: 0 16px 16px 16px;
    }
    
    .news-item {
        grid-template-columns: 90px 1fr;
    }
    
    .news-item-day {
        font-size: 22px;
    }
    
    .news-item-ym {
        font-size: 12px;
    }
    
    .news-item-title {
        font-size: 15px;
    }
    
    .news-item-desc {
        font-size: 13px;
    }
    
    /* 页尾响应式样式 */
    .footer-content {
        flex-direction: column;
        gap: 30px;
    }
    
    .footer-qrcode {
        display: none;
    }
    
    .footer-right {
        display: none;
    }
    
    .footer-bg {
        transform: translateX(20px);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 10px;
        text-align: center;
        align-items: center;
        justify-content: center;
        margin-top: 40px;
        padding-top: 0;
        height: auto;
        min-height: auto;
    }
    
    .footer-support {
        flex-direction: column;
        gap: 10px;
    }
    
    /* 页面横幅移动端样式 */
    .page-banner {
        height: 200px;
    }
    
    .page-banner-title {
        font-size: 32px;
    }
    
    /* 产品列表页移动端样式 */
    .product-list-wrapper,
    .product-details-wrapper {
        flex-direction: column;
    }
    
    .product-sidebar {
        flex: 1;
        width: 100%;
    }
    
    .product-list-content .product-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .product-details-main {
        flex-direction: column;
        gap: 20px;
    }
    
    .product-images {
        flex: 0 0 auto;
        width: 100%;
        max-width: 100%;
    }
    
    .product-main-image {
        aspect-ratio: 1 / 1;
    }
    
    .product-details-content .product-info {
        width: 100%;
        padding-left: 0;
        flex: 0 0 auto;
    }
    
    .product-actions {
        flex-direction: column;
        gap: 10px;
        align-items: flex-start;
        width: 100%;
    }
    
    .product-actions {
        flex-direction: column;
        gap: 10px;
        align-items: flex-start;
        width: 100%;
    }

    .article-title {
        font-size: 17px;
    }

    .article-desc {
        font-size: 13px;
    }

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

    .gallery-img {
        height: 180px;
    }
}

@media (max-width: 480px) {
    /* 产品区小屏手机适配 */
    .products-section {
        padding: 0 0 30px 0;
    }
    
    .products-bg {
        padding-top: 30px;
        padding-bottom: 30px;
    }
    
    .products-left {
        width: 100%;
        min-width: 0;
    }
    
    .products-right {
        width: 100%;
        min-width: 0;
    }
    
    .products-title {
        font-size: 22px;
    }
    
    .title-divider {
        height: 22px;
    }
    
    .products-title-en {
        font-size: 12px;
    }
    
    .products-description {
        font-size: 13px;
    }
    
    .product-categories {
        gap: 12px;
    }
    
    .product-category-item {
        width: 100%;
    }
    
    .category-box {
        width: 100%;
        padding: 0 10px;
        height: 55px; /* 标题22px + 下边距10px + 描述23.4px ≈ 55px */
    }
    
    .category-box h3 {
        font-size: 14px;
    }
    
    .category-en {
        font-size: 10px;
    }
    
    /* 其他小屏样式 */
    .welcome-text {
        font-size: 12px;
    }

    /* 应用区小屏文字铺满并自适应高度 */
    .application-main-image {
        display: block;
        position: relative;
        overflow: hidden;
        height: auto;
        min-height: auto;
    }
    
    .application-main-image img {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    
    .application-text-overlay {
        position: relative;
        width: 100%;
        height: auto;
        padding: 16px;
        align-items: flex-start;
        justify-content: flex-start;
    }
    
    .logo img {
        height: 40px;
    }
    
    .hotline-text {
        font-size: 14px;
    }
    
    .hotline-text strong {
        font-size: 16px;
    }
    
    .nav-link {
        padding: 12px 15px;
        font-size: 14px;
    }
    
    /* 产品列表小屏手机样式 */
    .product-list-wrapper {
        margin-top: 25px;
    }
    
    .product-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .product-title {
        font-size: 13px;
    }
    
    .product-info {
        min-height: 36px;
    }
    
    .arrow-circle {
        width: 22px;
        height: 22px;
        font-size: 12px;
    }
    
    /* 应用区小屏手机样式 */
    .application-main-image {
        flex-direction: column;
        min-height: auto;
    }
    
    .application-main-image::before {
        width: 100%;
        height: 100%;
    }
    
    .application-main-image img {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    
    .application-text-overlay {
        width: 100%;
        min-height: auto;
        padding: 16px;
        position: relative;
    }

    /* 新闻区小屏样式 */
    .news-section {
        padding: 40px 0;
    }
    
    .news-title {
        font-size: 22px;
    }
    
    .news-title-area .title-divider {
        height: 22px;
    }
    
    .news-title-en {
        font-size: 12px;
    }
    
    .news-description {
        font-size: 13px;
        margin-bottom: 24px;
    }
    
    .news-left {
        padding: 0;
    }
    
    .news-left-title {
        font-size: 17px;
        padding: 0 14px;
    }
    
    .news-left-desc {
        font-size: 13px;
        padding: 0 14px 14px 14px;
    }
    
    .news-content {
        gap: 16px;
    }
    
    .news-item {
        grid-template-columns: 80px 1fr;
    }
    
    .news-item-day {
        font-size: 20px;
    }
    
    .news-item-ym {
        font-size: 11px;
    }
    
    .news-item-title {
        font-size: 14px;
    }
    
    .news-item-desc {
        font-size: 12px;
    }
    
    /* 页尾小屏手机样式 */
    .footer {
        padding: 30px 0;
    }
    
    .footer-logo {
        max-width: 150px;
        margin-bottom: 15px;
    }
    
    .footer-company-name {
        font-size: 16px;
    }
    
    .footer-info p {
        font-size: 13px;
    }
    
    .footer-qrcode {
        display: none;
    }
    
    .footer-right {
        display: none;
    }
    
    .footer-bg {
        transform: translateX(10px);
    }
    
    .footer-bottom {
        padding-top: 0;
        margin-top: 40px;
        flex-direction: column;
        gap: 10px;
        text-align: center;
        align-items: center;
        justify-content: center;
        height: auto;
    }
    
    .footer-copyright {
        font-size: 12px;
    }
    
    .footer-support {
        flex-direction: column;
        gap: 8px;
        font-size: 12px;
    }
    
    /* 返回顶部按钮移动端样式 */
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
    
    .back-to-top svg {
        width: 20px;
        height: 20px;
    }
    
    /* 页面横幅小屏样式 */
    .page-banner {
        height: 150px;
    }
    
    .page-banner-title {
        font-size: 24px;
    }
    
    /* 产品列表页小屏样式 */
    .product-list-content .product-list {
        grid-template-columns: 1fr;
    }
    
    .product-main-image {
        aspect-ratio: 1 / 1;
    }
    
    .product-title {
        font-size: 22px;
    }
    
    .tab-nav {
        flex-wrap: wrap;
    }
    
    .tab-btn {
        padding: 10px 15px;
        font-size: 14px;
    }

    /* 文章列表小屏样式 */
    .article-item {
        padding: 14px 16px;
    }

    .article-title {
        font-size: 16px;
    }

    .article-meta {
        font-size: 12px;
        gap: 10px;
    }

    .article-desc {
        font-size: 13px;
    }

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

    .gallery-img {
        height: 180px;
    }
}