/* 全局变量 - 现代化工业风格 */
:root {
    --primary-color: #e53935;
    /* 活力红 */
    --primary-hover: #c62828;
    --primary-light: #fdeded;
    --secondary-color: #1a202c;
    /* 深邃蓝黑 */
    --accent-color: #3182ce;
    /* 辅助蓝色 */
    --bg-light: #f7fafc;
    --text-main: #2d3748;
    --text-muted: #718096;
    --border-color: #e2e8f0;
    --white: #ffffff;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --container-width: 1280px;
}

/* 基础重置 */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: var(--text-main);
    background-color: var(--bg-light);
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-color);
}

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

ul {
    list-style: none;
}

/* 布局工具 */
.container {
    width: var(--container-width);
    max-width: 100%;
    margin: 0 auto;
    padding: 0 20px;
}

.main-content {
    padding-top: 40px;
    padding-bottom: 60px;
    min-height: 60vh;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -15px;
    justify-content: space-between;
}

.col-3 {
    width: 25%;
    padding: 0 15px;
}

.col-4 {
    width: 33.333%;
    padding: 0 15px;
}

.col-6 {
    width: 50%;
    padding: 0 15px;
}

.col-8 {
    width: 66.666%;
    padding: 0 15px;
}

.col-9 {
    width: 75%;
    padding: 0 15px;
}

.col-12 {
    width: 100%;
    padding: 0 15px;
}

/* 顶部栏 */
.top-bar {
    background: var(--secondary-color);
    color: rgba(255, 255, 255, 0.7);
    padding: 10px 0;
    font-size: 13px;
}

.top-bar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar a {
    color: rgba(255, 255, 255, 0.7);
}

.top-bar a:hover {
    color: var(--white);
}

/* 头部 */
.header {
    background: var(--white);
    padding: 25px 0;
    border-bottom: 1px solid var(--border-color);
}

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

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

.logo-text {
    font-size: 32px;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: -1px;
}

.logo-tagline {
    margin-left: 20px;
    padding-left: 20px;
    border-left: 1px solid var(--border-color);
}

.logo-tagline .cn {
    display: block;
    font-size: 18px;
    font-weight: 700;
    color: var(--secondary-color);
    line-height: 1.2;
}

.logo-tagline .en {
    display: block;
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-top: 2px;
}

.search-form {
    display: flex;
    background: #f8fafc;
    border-radius: 50px;
    padding: 4px 4px 4px 20px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.search-form:focus-within {
    border-color: var(--primary-color);
    background: var(--white);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.search-form input {
    border: none;
    background: transparent;
    flex: 1;
    outline: none;
    font-size: 14px;
    color: var(--text-main);
}

.search-btn {
    background: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 8px 25px;
    border-radius: 40px;
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}

.search-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

/* 导航栏 */
.main-nav {
    background: var(--white);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid var(--border-color);
}

.nav-list {
    display: flex;
    justify-content: center;
}

.nav-list li {
    flex: 1;
}

.nav-list a {
    display: block;
    padding: 16px 25px;
    font-size: 15px;
    font-weight: 600;
    text-align: center;
    color: var(--secondary-color);
    position: relative;
    border-radius: var(--radius-sm);
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: 8px;
    left: 25px;
    right: 25px;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
    transform: scaleX(0);
    opacity: 0;
}

.nav-list a:hover {
    color: var(--primary-color);
    background: var(--primary-light);
}

.nav-list a.active {
    color: var(--primary-color);
    background: var(--primary-light);
}

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

/* 轮播图 */
.banner-slider {
    width: 100%;
    aspect-ratio: 1920 / 600;
    min-height: 300px;
    position: relative;
    overflow: hidden;
    margin-top: -40px;
}

@supports not (aspect-ratio: 1/1) {
    .banner-slider {
        height: 500px;
    }
}

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

.slide.active {
    opacity: 1;
    position: relative;
}

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

@media (max-width: 576px) {
    .slide img {
        object-fit: contain;
        background-color: #f5f5f5; /* 可选：给 contain 模式增加底色防止留白过大 */
    }
}

.slide-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 100px 0 60px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: var(--white);
}

.slide-title {
    font-size: 42px;
    margin: 0;
    font-weight: 800;
    letter-spacing: 1px;
}

.slide-subtitle {
    font-size: 18px;
    margin-top: 10px;
    opacity: 0.8;
    font-weight: 300;
}

.slide-fallback {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    color: white;
}

.slide-fallback-title {
    font-size: 48px;
    margin: 0;
    color: #fff;
    font-weight: 800;
}

.slide-fallback-subtitle {
    margin-top: 15px;
    font-size: 20px;
    opacity: 0.9;
}

/* 侧边栏 */
.sidebar-box {
    background: #f8f8f8;
    margin-bottom: 30px;
    border: 1px solid #e0e0e0;
    overflow: hidden;
}

.sidebar-title {
    background: #e53935; 
    color: #fff;
    padding: 15px 20px;
    font-weight: 700;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sidebar-title span.en {
    display: none; /* 隐藏英文，图片中未显示 */
}

.category-list li {
    position: relative;
    border-bottom: 1px dashed #ccc; /* 虚线分隔 */
}

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

.category-list a {
    display: flex;
    align-items: center;
    padding: 10px 20px;
    color: #333;
    font-weight: 500;
    font-size: 14px;
    transition: all 0.2s;
}

.category-list a::before {
    content: "•";
    margin-right: 10px;
    color: #666;
}

.category-list a:hover,
.category-list a.active {
    background: #fff;
    color: #e53935;
}

.category-list .arrow {
    display: none; /* 隐藏箭头，图片中是点号开头 */
}

.sub-menu {
    display: none;
    list-style: none;
    padding: 8px 0;
    background: #f8fafc;
}

.sub-menu-link {
    display: block;
    padding: 10px 25px 10px 45px;
    color: var(--text-muted);
    font-size: 14px;
    position: relative;
    transition: var(--transition);
    font-weight: 500;
}

.sub-menu-link:hover,
.sub-menu-link.active {
    color: var(--primary-color);
    background: rgba(229, 57, 53, 0.05);
}

.sub-menu-link.active {
    font-weight: 700;
}

.sub-menu-dot {
    position: absolute;
    left: 30px;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 5px;
    background: var(--primary-color);
    border-radius: 50%;
    opacity: 0.5;
}

.sub-menu-link.active .sub-menu-dot {
    opacity: 1;
}

.sidebar-contact-info {
    padding: 30px 25px;
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.8;
}

.sidebar-contact-name {
    margin-bottom: 20px;
}

.sidebar-contact-name strong {
    color: var(--secondary-color);
    font-size: 17px;
    display: block;
    margin-bottom: 5px;
}

.sidebar-contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 15px;
}

.sidebar-contact-item:last-child {
    margin-bottom: 0;
}

.sidebar-contact-icon {
    margin-right: 15px;
    color: var(--primary-color);
    font-size: 16px;
    margin-top: 2px;
}

.sidebar-contact-text {
    color: var(--text-main);
    font-weight: 500;
}

.empty-list {
    padding: 20px 25px;
    color: #999;
    text-align: center;
    font-style: italic;
}

/* 页面通用样式 */
.page-content-title {
    margin-bottom: 30px;
    color: var(--secondary-color);
    font-size: 32px;
    font-weight: 800;
}

.info-grid {
    margin: 40px 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.info-card {
    background: var(--bg-light);
    padding: 30px;
    border-radius: var(--radius-md);
    border-left: 5px solid var(--primary-color);
    height: 100%;
}

.info-card--secondary {
    border-left-color: var(--secondary-color);
}

.info-card h3 {
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-size: 18px;
}

.info-card p {
    margin: 0;
    font-size: 14px;
    color: var(--text-main);
}

.check-list {
    list-style: none;
    padding: 0;
    margin: 30px 0;
}

.check-list li {
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
}

.check-list-icon {
    color: var(--primary-color);
    margin-right: 15px;
    font-weight: 800;
    font-size: 18px;
    line-height: 1;
}

.check-list-content strong {
    display: block;
    margin-bottom: 5px;
    color: var(--secondary-color);
    font-size: 16px;
}

.check-list-content p {
    margin: 0;
    font-size: 14px;
    color: var(--text-muted);
}

/* 联系我们 & 关于我们 */
.page-container {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.page-header {
    background: #f8fafc;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.page-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--secondary-color);
    margin-bottom: 15px;
    letter-spacing: -1px;
}

.page-subtitle {
    color: var(--text-muted);
    font-size: 16px;
    font-weight: 500;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 0;
}

.contact-info-panel {
    background: var(--secondary-color);
    color: var(--white);
    padding: 60px;
}

.contact-info-panel h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 15px;
}

.contact-info-panel h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--primary-color);
}

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

.contact-info-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 35px;
}

.contact-info-icon {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 20px;
    margin-right: 20px;
    flex-shrink: 0;
    transition: var(--transition);
}

.contact-info-item:hover .contact-info-icon {
    background: var(--primary-color);
    color: var(--white);
    transform: scale(1.1);
}

.contact-info-text h4 {
    font-size: 14px;
    color: #94a3b8;
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-info-text p {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.6;
}

.contact-form-panel {
    padding: 60px;
    background: var(--white);
}

.contact-form-panel h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 40px;
}

.form-group {
    margin-bottom: 25px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 10px;
}

.form-control {
    width: 100%;
    padding: 12px 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 15px;
    transition: var(--transition);
    background: #f8fafc;
}

.form-control:focus {
    border-color: var(--primary-color);
    outline: none;
    background: var(--white);
    box-shadow: 0 0 0 4px var(--primary-light);
}

.btn-submit {
    background: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 15px 40px;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 16px;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 6px -1px rgba(229, 57, 53, 0.2);
}

.btn-submit:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(229, 57, 53, 0.3);
}

.about-content {
    padding: 60px;
    line-height: 2;
    font-size: 16px;
    color: var(--text-main);
}

.about-section {
    margin-bottom: 60px;
}

.about-section:last-child {
    margin-bottom: 0;
}

.about-section h3 {
    font-size: 24px;
    font-weight: 800;
    color: var(--secondary-color);
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.about-section h3::before {
    content: '';
    width: 6px;
    height: 24px;
    background: var(--primary-color);
    border-radius: 3px;
}

.about-image {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    margin-bottom: 40px;
    border: 1px solid var(--border-color);
}

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

/* 响应式适配 */
.mt-60 {
    margin-top: 60px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
    border-bottom: 1px solid var(--border-color);
}

/* 产品介绍标题 */
.section-header h2 {
    font-size: 24px;
    font-weight: 700;
    color: #333;
    margin-bottom: 20px;
    border-bottom: none;
    padding-bottom: 0;
}

.section-header h2 span {
    display: none; /* 隐藏副标题 */
}

.more-link {
    color: var(--primary-color);
    font-weight: 700;
    font-size: 14px;
    display: flex;
    align-items: center;
}

.more-link:hover {
    text-decoration: underline;
}

/* 首页内容区域 */
.home-sections {
    margin-top: 50px;
}

/* 首页分类网格 */
.home-category-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 50px;
}

.category-card {
    background: var(--white);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
}

.category-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.category-card a {
    display: block;
    height: 100%;
}

.category-image {
    width: 100%;
    height: 220px;
    background: linear-gradient(180deg, #fffbeb 0%, #fef3c7 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}

.category-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 20px;
    transition: var(--transition);
}

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

.category-info {
    padding: 25px 20px;
    text-align: center;
    background: var(--white);
    flex: 1;
}

.category-name {
    font-size: 19px;
    font-weight: 700;
    color: var(--secondary-color);
    margin: 0 0 10px 0;
    transition: var(--transition);
}

.category-card:hover .category-name {
    color: var(--primary-color);
}

.category-count {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0;
    background: var(--bg-light);
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-weight: 500;
}

/* 产品卡片 */
/* 产品网格 */
.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.product-card {
    background: #fff;
    border: 1px solid #ddd;
    position: relative;
    overflow: hidden;
    aspect-ratio: 1 / 1; /* 使其接近正方形 */
    display: flex;
    flex-direction: column;
}

.product-img {
    width: 100%;
    height: 100%;
    padding: 0;
    border-bottom: none;
}

.product-img a {
    width: 100%;
    height: 100%;
}

.product-img img {
    width: 100%;
    height: 100%;
    object-fit: contain; /* 完整显示最长边，不裁切 */
    padding: 10px; /* 增加内边距防止贴边 */
    background: linear-gradient(180deg, #fffbeb 0%, #fef3c7 80%);
}

/* 产品名称叠加层 */
.product-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.5); /* 半透明遮罩 */
    padding: 8px 10px;
    text-align: center;
    z-index: 2;
    transition: background 0.3s;
}

.product-card:hover .product-info {
    background: rgba(0, 0, 0, 0.7);
}

.product-name {
    font-size: 13px;
    font-weight: 400;
    color: #fff;
    margin-bottom: 0;
    line-height: 1.2;
    height: auto;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    display: block;
}

.product-name a {
    color: #fff !important;
}

/* 隐藏不需要的元素 */
.product-model,
.product-card-footer {
    display: none;
}

.btn-more {
    display: inline-block;
    padding: 5px 12px;
    border: 1px solid #ddd;
    border-radius: 2px;
    color: #666;
    font-size: 12px;
    transition: all 0.2s;
}

.btn-more:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}


/* 产品详情页样式 */
.breadcrumb {
    background: transparent;
    padding: 20px 0;
    margin-bottom: 0;
    font-size: 13px;
    color: #64748b;
}

.breadcrumb .container {
    display: flex;
    align-items: center;
    gap: 8px;
}

.breadcrumb a {
    color: #64748b;
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--primary-color);
}

.breadcrumb .separator {
    color: #cbd5e1;
}

.breadcrumb .current {
    color: #1e293b;
    font-weight: 500;
}

.detail-container {
    background: var(--white);
    padding: 0;
}

.detail-main {
    display: grid;
    grid-template-columns: 480px 1fr;
    gap: 40px;
    padding: 20px 0 50px;
}

.detail-gallery {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: #fff;
    position: sticky;
    top: 20px;
}

.main-image-wrapper {
    width: 100%;
    aspect-ratio: 1/1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 30px;
}

.main-image-wrapper img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.detail-info {
    display: flex;
    flex-direction: column;
}

.detail-title {
    font-size: 32px;
    font-weight: 800;
    color: var(--secondary-color);
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 2px solid #f1f5f9;
}

.detail-meta-box {
    background: #f8fafc;
    padding: 25px;
    border-radius: 8px;
    margin-bottom: 30px;
    border: 1px solid #f1f5f9;
}

.meta-item {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
    font-size: 15px;
}

.meta-item:last-child {
    margin-bottom: 0;
}

.meta-label {
    color: #64748b;
    width: 100px;
    font-weight: 500;
}

.meta-value {
    color: #1e293b;
    font-weight: 600;
}

.meta-value.highlight {
    color: var(--primary-color);
    font-size: 18px;
}

.feature-list {
    margin: 25px 0 35px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.feature-item {
    padding: 12px 20px;
    background: #f1f5f9;
    border-radius: 6px;
    font-size: 14px;
    color: #475569;
    border-left: 3px solid var(--primary-color);
    transition: var(--transition);
}

.feature-item:hover {
    background: #e2e8f0;
    transform: translateX(5px);
}

.detail-actions {
    display: flex;
    gap: 20px;
    margin-top: auto;
}

.btn-inquiry {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
    color: #fff;
    padding: 18px 30px;
    border-radius: 6px;
    font-weight: 700;
    font-size: 18px;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.2);
}

.btn-inquiry:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(245, 158, 11, 0.3);
}

.btn-pdf {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    color: var(--secondary-color);
    padding: 18px 30px;
    border-radius: 6px;
    font-weight: 700;
    font-size: 18px;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.btn-pdf:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: #fff;
}

/* 产品参数简述表格 */
.detail-params-brief-table {
    width: 100%;
    border-collapse: collapse;
    background: #f8fafc;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
    overflow: hidden;
    display: table; /* 确保它是表格显示 */
}

.detail-params-brief-table tr {
    border-bottom: 1px solid #f1f5f9;
}

.detail-params-brief-table tr:last-child {
    border-bottom: none;
}

.detail-params-brief-table td {
    padding: 12px 20px;
    font-size: 14px;
    line-height: 1.5;
}

.detail-params-brief-table .param-label {
    color: #64748b;
    width: 80px;
    text-align: center;
    font-weight: 600;
    background: #f1f5f9;
}

.detail-params-brief-table .param-value {
    color: #1e293b;
    font-weight: 500;
}

@media (max-width: 768px) {
    .detail-params-brief-table td {
        padding: 10px 15px;
    }
    
    .detail-params-brief-table .param-label {
        width: 100px;
    }
}

/* 详情页页签 */
.detail-tabs-container {
    margin-top: 60px;
}

.detail-tabs-header {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    border-bottom: 2px solid #f1f5f9;
    margin-bottom: 30px;
}

.tab-item {
    padding: 12px 25px;
    font-size: 15px;
    font-weight: 700;
    color: #64748b;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    border-radius: 6px 6px 0 0;
}

@media (max-width: 768px) {
    .tab-item {
        padding: 10px 15px;
        font-size: 14px;
        flex: 1 1 auto;
        text-align: center;
    }
}

.tab-item:hover {
    color: var(--primary-color);
    background: #f8fafc;
}

.tab-item.active {
    color: var(--primary-color);
    background: #fff;
}

.tab-item.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px 3px 0 0;
}

.detail-tab-content {
    min-height: 300px;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.tab-text-content {
    font-size: 16px;
    line-height: 1.8;
    color: #334155;
}

.tab-images {
    margin-top: 30px;
    display: flex;
    flex-direction: column;
    gap: 30px;
    align-items: center;
}

.tab-images img {
    max-width: 100%;
    border: 1px solid #f1f5f9;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

/* 规格参数表格 */
.specs-table-container {
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    overflow: hidden;
    background: #fff;
}

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

.specs-table td {
    padding: 16px 25px;
    border-bottom: 1px solid #f1f5f9;
    font-size: 15px;
    color: #334155;
}

.specs-table tr:last-child td {
    border-bottom: none;
}

.spec-key {
    width: 240px;
    background: #f8fafc;
    color: #64748b;
    font-weight: 700;
    border-right: 1px solid #f1f5f9;
}

.spec-value {
    font-weight: 500;
}

.download-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    gap: 20px;
}

.download-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 25px 30px;
    background: #f8fafc;
    border: 1px solid #f1f5f9;
    border-radius: 10px;
    transition: var(--transition);
}

.download-item:hover {
    background: #fff;
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    transform: translateY(-2px);
}

.download-info {
    display: flex;
    align-items: center;
    gap: 20px;
}

.icon-file {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    font-weight: 800;
    font-size: 14px;
}

.file-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--secondary-color);
}

.btn-download-small {
    padding: 10px 20px;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    color: #64748b;
    transition: var(--transition);
}

.btn-download-small:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

.empty-tab, .empty-downloads {
    padding: 60px 0;
    text-align: center;
    color: #94a3b8;
    background: #f8fafc;
    border-radius: 12px;
    border: 2px dashed #e2e8f0;
}

.empty-tab p, .empty-downloads p {
    font-size: 16px;
}

/* 新闻模块 */
.news-row {
    margin-bottom: 30px;
}

.news-card {
    display: flex;
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 25px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    margin-bottom: 25px;
    height: 100%;
    align-items: center;
}

.news-card:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.news-img {
    width: 160px;
    height: 110px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    flex-shrink: 0;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
}

.news-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.news-info {
    margin-left: 25px;
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.news-title-home {
    font-size: 18px;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 10px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.news-card:hover .news-title-home {
    color: var(--primary-color);
}

.news-summary {
    font-size: 14px;
    color: var(--text-muted);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.6;
    margin-bottom: 12px;
}

.news-meta-home {
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 20px;
    margin-top: auto;
    font-weight: 500;
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.news-card-list {
    display: flex;
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.news-card-list:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.news-card-list .news-img-box {
    width: 320px;
    min-width: 320px;
    height: 240px;
    overflow: hidden;
    background: var(--bg-light);
    border-right: 1px solid var(--border-color);
}

.news-card-list .news-img-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.news-card-list .news-content {
    padding: 35px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-card-list .news-date-box {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    gap: 15px;
}

.news-card-list .news-date {
    background: var(--primary-light);
    color: var(--primary-color);
    font-size: 12px;
    padding: 4px 14px;
    border-radius: 20px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.news-card-list .news-line {
    height: 1px;
    background: var(--border-color);
    flex: 1;
}

.news-card-list .news-title {
    font-size: 24px;
    font-weight: 800;
    color: var(--secondary-color);
    margin-bottom: 15px;
    line-height: 1.3;
}

.news-card-list .news-title a:hover {
    color: var(--primary-color);
}

.news-card-list .news-excerpt {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 25px;
}

.news-card-list .read-more {
    margin-top: auto;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.news-card-list .read-more:hover {
    gap: 12px;
    text-decoration: none;
}

.empty-news {
    padding: 80px 0;
    text-align: center;
    color: var(--text-muted);
    background: var(--white);
    border-radius: var(--radius-lg);
    border: 2px dashed var(--border-color);
}

.empty-news .icon {
    font-size: 60px;
    margin-bottom: 20px;
    opacity: 0.3;
}

/* 新闻详情 */
.news-detail-container {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.news-detail-header {
    padding: 60px 60px 40px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    background: #fcfcfc;
}

.news-detail-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--secondary-color);
    margin-bottom: 25px;
    line-height: 1.3;
    letter-spacing: -0.5px;
}

.news-detail-meta {
    color: var(--text-muted);
    font-size: 14px;
    display: flex;
    justify-content: center;
    gap: 40px;
    font-weight: 500;
}

.news-detail-content {
    padding: 60px;
    line-height: 1.8;
    font-size: 16px;
    color: var(--text-main);
}

.news-detail-content p {
    margin-bottom: 25px;
}

.news-detail-content img {
    max-width: 100%;
    border-radius: var(--radius-md);
    margin: 40px auto;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.news-detail-footer {
    padding: 40px 60px;
    border-top: 1px solid var(--border-color);
    text-align: center;
    background: #fcfcfc;
}

.btn-back {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 30px;
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 30px;
    color: var(--text-main);
    font-weight: 600;
    transition: var(--transition);
}

.btn-back:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: var(--primary-light);
}

/* 页脚 */
.footer {
    background: #0f172a;
    color: #94a3b8;
    padding: 80px 0 0;
    margin-top: 80px;
    position: relative;
}

.footer-top {
    padding-bottom: 60px;
}

.footer-logo {
    font-size: 36px;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 25px;
    display: block;
    letter-spacing: -1.5px;
    transition: var(--transition);
}

.footer-logo:hover {
    color: var(--primary-color);
}

.footer-desc {
    line-height: 1.8;
    margin-bottom: 35px;
    max-width: 320px;
    font-size: 15px;
    color: #94a3b8;
}

.footer-heading {
    color: var(--white);
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 35px;
    position: relative;
    padding-bottom: 15px;
    letter-spacing: 0.5px;
}

.footer-heading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

.footer-links li {
    margin-bottom: 15px;
}

.footer-links a {
    color: #94a3b8;
    transition: var(--transition);
    display: inline-block;
    position: relative;
    font-weight: 500;
}

.footer-links a:hover {
    color: var(--white);
    transform: translateX(8px);
}

.footer-contact li {
    display: flex;
    align-items: center;
    margin-bottom: 25px;
    font-size: 15px;
    transition: var(--transition);
}

.footer-contact li:hover {
    color: var(--white);
}

.footer-contact .icon {
    margin-right: 15px;
    font-size: 18px;
    color: var(--primary-color);
    opacity: 0.9;
    margin-top: 3px;
}

.footer-bottom {
    background: #020617;
    padding: 30px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: #64748b;
    font-size: 13.5px;
}

.footer-bottom-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-bottom .copyright {
    margin: 0;
    font-weight: 500;
}

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

.footer-bottom a {
    color: #64748b;
    transition: var(--transition);
    font-weight: 500;
}

.footer-bottom a:hover {
    color: var(--white);
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 60px;
}

.pagination a,
.pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 45px;
    height: 45px;
    padding: 0 15px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: var(--white);
    font-weight: 700;
    transition: var(--transition);
    color: var(--text-main);
}

.pagination a:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: var(--primary-light);
    transform: translateY(-2px);
}

.pagination .active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

/* 产品详情 */
.detail-container {
    background: var(--white);
    padding: 0;
}

.breadcrumb {
    background: #f8fafc;
    padding: 18px 40px;
    border-bottom: 1px solid var(--border-color);
    font-size: 13.5px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
}

.breadcrumb a {
    color: var(--text-muted);
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--primary-color);
}

.breadcrumb .current {
    color: var(--primary-color);
    font-weight: 700;
}

.breadcrumb .separator {
    color: #cbd5e1;
    font-size: 10px;
}

.detail-main {
    padding: 40px;
    display: grid;
    grid-template-columns: 460px 1fr;
    gap: 50px;
}

.detail-gallery {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 460px;
    transition: var(--transition);
}

.detail-gallery img {
    max-width: 100%;
    max-height: 400px;
    object-fit: contain;
}

.detail-info {
    display: flex;
    flex-direction: column;
    padding: 10px 0;
}

.detail-title {
    font-size: 32px;
    font-weight: 800;
    color: var(--secondary-color);
    margin-bottom: 25px;
    line-height: 1.3;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.detail-meta-box {
    background: #f8fafc;
    padding: 20px;
    border-radius: 4px;
}

.meta-item {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
}

.meta-item:last-child {
    margin-bottom: 0;
}

.meta-label {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 600;
    width: 100px;
    flex-shrink: 0;
}

.meta-value {
    font-size: 14px;
    color: var(--secondary-color);
    font-weight: 600;
}

.meta-value.highlight {
    color: var(--primary-color);
}

.feature-list {
    margin: 20px 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.feature-item {
    padding: 10px 15px;
    background: #f1f5f9;
    border-radius: 4px;
    font-size: 13px;
    color: var(--text-main);
}

.detail-actions {
    display: flex;
    gap: 20px;
    margin-top: 30px;
}

.btn-inquiry {
    background: var(--primary-color);
    color: #fff;
    text-align: center;
    padding: 15px 40px;
    border-radius: 4px;
    font-weight: 700;
    font-size: 18px;
    transition: var(--transition);
    flex: 1;
}

.btn-inquiry:hover {
    background: var(--primary-hover);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(229, 57, 53, 0.2);
}

.btn-pdf {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f1f5f9;
    color: var(--secondary-color);
    padding: 15px 30px;
    border-radius: 4px;
    font-weight: 700;
    font-size: 16px;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    gap: 10px;
}

.btn-pdf:hover {
    background: var(--white);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.detail-tabs {
    margin-top: 50px;
}

.detail-tabs-header {
    display: flex;
    border-bottom: 2px solid var(--border-color);
    gap: 40px;
}

.tab-item {
    padding: 15px 5px;
    font-size: 18px;
    font-weight: 700;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.tab-item:hover {
    color: var(--primary-color);
}

.tab-item.active {
    color: var(--primary-color);
}

.tab-item.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-color);
}

.detail-tab-content {
    padding: 40px 0;
}

.tab-pane {
    display: none;
    animation: fadeIn 0.4s ease-out;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.specs-table td {
    padding: 15px 25px;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

.specs-table td:first-child {
    background: #f8fafc;
    width: 240px;
    font-weight: 700;
    color: var(--secondary-color);
}

.detail-desc-content {
    line-height: 2;
    color: var(--text-main);
    font-size: 15px;
}

.detail-desc-content img {
    max-width: 100%;
    margin: 20px 0;
    border: 1px solid var(--border-color);
    padding: 10px;
    border-radius: 4px;
}

.tab-images {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
}

.tab-images img {
    max-width: 100%;
    border: 1px solid var(--border-color);
    padding: 10px;
    background: #fff;
    border-radius: 4px;
}

.download-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.download-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 30px;
    background: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    transition: var(--transition);
}

.download-item:hover {
    background: #fff;
    border-color: var(--primary-color);
    transform: translateX(5px);
}

.download-info {
    display: flex;
    align-items: center;
    gap: 20px;
}

.icon-file {
    background: var(--primary-color);
    color: #fff;
    padding: 5px 10px;
    border-radius: 3px;
    font-size: 12px;
    font-weight: 800;
}

.file-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--secondary-color);
}

.btn-download-small {
    padding: 8px 20px;
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-main);
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-download-small:hover {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

.empty-tab, .empty-downloads {
    text-align: center;
    padding: 40px 0;
    color: var(--text-muted);
    font-style: italic;
}

.dimensions-container {
    display: flex;
    flex-direction: column;
    gap: 40px;
    margin-top: 20px;
}

.dimension-item {
    background: #fff;
    border: 1px solid var(--border-color);
    padding: 30px;
    border-radius: 4px;
    text-align: center;
}

.dimension-item h4 {
    margin-bottom: 20px;
    color: var(--secondary-color);
    font-size: 18px;
}

.empty-detail {
    text-align: center;
    padding: 60px 0;
    color: var(--text-muted);
}

.empty-detail .icon {
    font-size: 48px;
    margin-bottom: 15px;
    opacity: 0.3;
}

/* 通用布局与工具类 */
.main-row {
    margin-top: 30px;
}

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

.mb-30 {
    margin-bottom: 30px;
}

.pagination-ellipsis {
    border: none !important;
    background: transparent !important;
    cursor: default !important;
}

/* 移动端菜单按钮 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.mobile-menu-toggle span {
    width: 100%;
    height: 3px;
    background-color: var(--text-main);
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* 响应式样式 */
@media (max-width: 1200px) {
    .container {
        width: 95%;
    }

    .detail-main {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .detail-gallery {
        min-height: auto;
    }
}

@media (max-width: 992px) {
    .header-main {
        display: flex;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: 15px 0;
        flex-wrap: wrap;
    }

    .logo {
        order: 1;
        margin-right: 0;
        flex: 0 0 auto;
    }

    .logo-tagline {
        display: none;
    }

    .mobile-menu-toggle {
        order: 2;
        display: flex;
        flex: 0 0 auto;
    }

    .search-box {
        order: 3;
        width: 100%;
        margin-top: 15px;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: #fff;
        z-index: 1000;
        transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: -5px 0 25px rgba(0, 0, 0, 0.15);
        padding-top: 150px;
        display: block !important;
    }

    .main-nav.active {
        right: 0;
    }

    .nav-list {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        padding: 0 25px;
        width: 100%;
    }

    .nav-list li {
        width: 100%;
        border-bottom: 1px solid #f0f0f0;
    }

    .nav-list a {
        padding: 15px 0;
        display: block;
        width: 100%;
        color: var(--text-main);
        font-size: 16px;
        font-weight: 600;
        text-align: left;
    }

    .nav-list a::after {
        display: none;
    }

    .nav-list a.active {
        color: var(--primary-color);
        border-bottom: none;
    }

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

    .contact-info-panel,
    .contact-form-panel {
        padding: 40px;
    }

    .footer-bottom-container {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }

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

    /* 栅格系统响应式 */
    .col-3,
    .col-4,
    .col-6,
    .col-8,
    .col-9 {
        width: 100%;
        margin-bottom: 30px;
    }

    .main-row {
        flex-direction: column;
    }

    /* 侧边栏折叠样式 */
    .sidebar-title {
        display: flex;
        justify-content: space-between;
        align-items: center;
        cursor: pointer;
        padding: 15px 20px;
        border-radius: var(--radius-md);
        margin-bottom: 0;
    }

    .sidebar-title::after {
        content: '▼';
        font-size: 12px;
        transition: transform 0.3s;
        color: var(--text-muted);
    }

    .sidebar-title.active::after {
        transform: rotate(180deg);
    }

    .category-list {
        display: none;
        padding-top: 15px;
    }

    .category-list.active {
        display: block;
    }
}

@media (max-width: 768px) {

    .category-grid,
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

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

    .news-card-list {
        flex-direction: column;
    }

    .news-card-list .news-img-box {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

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

    .slide-title {
        font-size: 26px;
    }

    .page-title {
        font-size: 26px;
    }

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

    .top-left {
        display: block;
    }

    .top-bar-inner {
        justify-content: space-between;
    }

    .top-right .contact-item {
        display: none;
    }

    .page-header {
        padding: 40px 20px;
    }

    .about-content,
    .news-detail-content,
    .news-detail-header,
    .news-detail-footer {
        padding: 30px 20px;
    }

    .detail-main {
        padding: 30px 20px;
    }

    .tab-header {
        overflow-x: auto;
        white-space: nowrap;
        -webkit-overflow-scrolling: touch;
    }

    .tab-item {
        padding: 12px 20px;
        font-size: 14px;
        flex: 1;
        text-align: center;
    }

    .tab-body {
        padding: 25px 15px;
    }

    .contact-info-panel,
    .contact-form-panel {
        padding: 30px 20px;
    }
}

@media (max-width: 576px) {

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

    .home-category-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .home-category-grid .category-image {
        height: 140px;
    }

    .home-category-grid .category-info {
        padding: 15px 10px;
    }

    .home-category-grid .category-name {
        font-size: 14px;
        margin-bottom: 5px;
    }

    .home-category-grid .category-count {
        font-size: 12px;
    }

    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .product-name {
        font-size: 12px;
        padding: 6px 8px;
    }

    .product-info {
        padding: 6px 8px;
    }

    .logo-text {
        font-size: 24px;
    }

    .section-header {
        align-items: center;
        gap: 10px;
    }

    .section-header h2 {
        font-size: 22px;
    }

    .section-header h2 span {
        display: none;
    }

    .category-banner {
        height: 120px !important;
    }

    .news-detail-title {
        font-size: 24px;
    }

    .news-detail-meta {
        flex-direction: column;
        gap: 10px;
        align-items: center;
    }

    .banner-slider {
        aspect-ratio: 16 / 9;
        min-height: 200px;
        margin-top: 0;
    }

    .slide-caption {
        padding: 40px 0 20px;
    }

    .slide-title {
        font-size: 20px;
        line-height: 1.2;
    }

    .slide-subtitle {
        font-size: 12px;
        margin-top: 5px;
    }

    .slide-fallback-title {
        font-size: 28px;
    }

    .slide-fallback-subtitle {
        font-size: 14px;
    }
}

/* 保护内容：禁用选中 */
.product-grid, 
.home-category-grid, 
.category-grid, 
.product-card, 
.category-card, 
.detail-container {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

/* 关于我们服务特色样式 */
.style_container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.third_style_item {
    background: #fff;
    padding: 30px 20px;
    border-radius: 12px;
    border: 1px solid #eee;
    transition: all 0.3s ease;
    text-align: center;
}

.third_style_item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
    border-color: var(--primary-color);
}

.icon_item_container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.imgContainer {
    margin-bottom: 20px;
}

.imgContainer img {
    max-width: 80px;
    height: auto;
}

.item_title {
    font-size: 18px;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 12px;
}

.item_desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}

@media (max-width: 992px) {
    .style_container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .style_container {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .third_style_item {
        padding: 20px 10px;
    }

    .imgContainer img {
        max-width: 60px;
    }

    .item_title {
        font-size: 16px;
    }

    .item_desc {
        font-size: 12px;
    }
}

/* 辅助类 */
.mt-20 {
    margin-top: 20px;
}

.mt-40 {
    margin-top: 40px;
}

.mb-20 {
    margin-bottom: 20px;
}

.mb-40 {
    margin-bottom: 40px;
}

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

.flex {
    display: flex;
}

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

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

/* ==========================================================================
   详情页移动端极致优化
   ========================================================================== */
@media (max-width: 768px) {
    /* 基础容器优化 */
    .main-content {
        padding-top: 15px !important;
        padding-bottom: 40px !important;
    }

    /* 详情页主布局 */
    .detail-main {
        grid-template-columns: 1fr !important;
        gap: 20px !important;
        padding: 0 0 30px !important;
    }

    /* 产品图片区域 */
    .detail-gallery {
        position: static !important;
        margin-bottom: 0 !important;
        border-radius: 12px;
        overflow: hidden;
        background: #fff;
        box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    }

    .main-image-wrapper {
        padding: 10px !important;
        aspect-ratio: 1 / 1;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .main-image-wrapper img {
        max-height: 100%;
        width: auto;
        object-fit: contain;
    }

    /* 产品标题与元数据 */
    .detail-title {
        font-size: 20px !important;
        margin-top: 10px;
        margin-bottom: 15px !important;
        padding-bottom: 15px !important;
        line-height: 1.4 !important;
        color: var(--secondary-color);
    }

    .detail-meta-box {
        padding: 12px 15px !important;
        margin-bottom: 15px !important;
        background: #f1f5f9 !important;
        border-radius: 8px !important;
    }

    .meta-item {
        font-size: 13px !important;
        margin-bottom: 6px !important;
    }

    .meta-label {
        width: 70px !important;
        color: #64748b;
    }

    /* 核心参数表 - 移动端改为卡片式两列布局 */
    .detail-params-brief-table {
        display: block !important;
        background: transparent !important;
        border: none !important;
    }

    .detail-params-brief-table tbody {
        display: grid !important;
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 8px !important;
    }

    .detail-params-brief-table tr {
        display: flex !important;
        flex-direction: column !important;
        background: #fff !important;
        border: 1px solid #e2e8f0 !important;
        border-radius: 8px !important;
        padding: 10px !important;
        margin: 0 !important;
        box-shadow: 0 1px 3px rgba(0,0,0,0.02);
    }

    .detail-params-brief-table .param-label {
        width: 100% !important;
        text-align: left !important;
        background: transparent !important;
        padding: 0 !important;
        margin-bottom: 4px !important;
        font-size: 11px !important;
        color: #94a3b8 !important;
        text-transform: uppercase;
    }

    .detail-params-brief-table .param-value {
        padding: 0 !important;
        font-size: 13px !important;
        font-weight: 600 !important;
        color: var(--secondary-color) !important;
        word-break: break-all !important;
    }

    /* 按钮组优化 */
    .detail-actions {
        flex-direction: column !important;
        gap: 10px !important;
        margin-top: 20px !important;
    }

    .btn-inquiry, .btn-pdf {
        width: 100% !important;
        padding: 0 20px !important;
        font-size: 15px !important;
        height: 50px !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        border-radius: 8px !important;
    }

    /* 选项卡优化 */
    .detail-tabs-container {
        margin-top: 25px !important;
    }

    .detail-tabs-header {
        display: flex !important;
        overflow-x: auto !important;
        flex-wrap: nowrap !important;
        white-space: nowrap !important;
        gap: 0 !important;
        -webkit-overflow-scrolling: touch !important;
        scrollbar-width: none !important;
        margin-bottom: 15px !important;
        border-bottom: 2px solid #f1f5f9 !important;
        padding-bottom: 0 !important;
    }

    .detail-tabs-header::-webkit-scrollbar {
        display: none !important;
    }

    .tab-item {
        flex: 0 0 auto !important;
        padding: 12px 15px !important;
        font-size: 13px !important;
        position: relative !important;
        border-bottom: 2px solid transparent !important;
        margin-bottom: -2px !important;
    }

    .tab-item.active {
        color: var(--primary-color) !important;
        border-bottom-color: var(--primary-color) !important;
        background: transparent !important;
    }

    /* 规格表格滚动优化 */
    .specs-table-container {
        margin: 0 -20px !important;
        padding: 0 20px !important;
        border-radius: 0 !important;
        border-left: none !important;
        border-right: none !important;
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch !important;
    }

    .specs-table {
        min-width: 450px !important;
    }

    .specs-table td {
        padding: 10px !important;
        font-size: 13px !important;
    }

    /* PDF 预览 */
    .pdf-preview-container {
        margin: 0 -20px 15px -20px !important;
        border-radius: 0 !important;
        background: #f8fafc;
    }

    .pdf-preview-container iframe {
        height: 400px !important;
        border: none !important;
    }

    /* 下载列表 */
    .download-item {
        padding: 12px !important;
        background: #fff !important;
        border: 1px solid #e2e8f0 !important;
        border-radius: 10px !important;
    }

    .file-name {
        font-size: 13px !important;
    }

    .btn-download-small {
        padding: 8px 12px !important;
        font-size: 12px !important;
    }

    /* 面包屑导航 */
    .breadcrumb {
        padding: 12px 0 !important;
        background: #f8fafc !important;
    }

    .breadcrumb .container {
        font-size: 11px !important;
        opacity: 0.8;
    }
}

/* 解决移动端横向滚动条问题 */
@media (max-width: 768px) {
    body, html {
        overflow-x: hidden !important;
        width: 100% !important;
        position: relative !important;
    }
    
    .container {
        padding-left: 15px !important;
        padding-right: 15px !important;
    }
}