/* ==========================================
   CSS Reset & Base Styles
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* ==========================================
       品牌色系 - 统一主色调
       ========================================== */
    --primary-color: #003366;
    --primary-light: #004080;
    --primary-dark: #002244;
    
    /* 功能色 */
    --secondary-color: #FF6600;
    --secondary-light: #FF8533;
    --secondary-dark: #CC5200;
    --accent-color: #4a90e2;
    
    /* 灰度色系 */
    --white-color: #FFFFFF;
    --light-color: #f5f5f5;
    --light-gray: #F5F7FA;
    --gray-light: #E8ECF1;
    --gray-color: #666;
    --gray-dark: #4A5568;
    --dark-color: #0a1628;
    --border-color: #e0e0e0;
    
    /* 文本色 */
    --text-primary: #1A202C;
    --text-secondary: #4A5568;
    --text-muted: #6B7B8C;
    
    /* 语义色 */
    --accent-blue: #007BFF;
    --accent-green: #28A745;
    --accent-red: #DC3545;
    --accent-yellow: #FFC107;
    
    /* 背景色 */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F5F7FA;
    --bg-dark: #1A202C;
    --bg-overlay: rgba(0, 51, 102, 0.8);

    /* ==========================================
       字体系统
       ========================================== */
    --font-primary: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family: var(--font-primary);
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-xxl: 1.5rem;
    --font-size-xxxl: 2rem;
    --font-size-display: 3rem;

    /* ==========================================
       间距系统 - 统一使用rem单位
       ========================================== */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    --spacing-xxxl: 4rem;

    /* ==========================================
       圆角系统
       ========================================== */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-xxl: 20px;
    --radius-full: 9999px;

    /* ==========================================
       阴影系统
       ========================================== */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.25);

    /* ==========================================
       过渡动画
       ========================================== */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* ==========================================
       布局相关
       ========================================== */
    --container-max: 1200px;
    --container-padding: 1rem;
    --header-height: 80px;
    --header-height-mobile: 60px;

    /* ==========================================
       Z-index层级
       ========================================== */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 300;
    --z-tooltip: 400;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: #333;
    background-color: #fff;
    overflow-x: hidden;
}

/* ==========================================
   Utility Classes
   ========================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.section {
    padding: var(--spacing-xxl) 0;
}

/* ==========================================
   Loading Screen
   ========================================== */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--dark-color) 100%);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
    color: #fff;
}

.loader-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--secondary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-md);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ==========================================
   Header
   ========================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
}

.logo a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.logo a:hover {
    color: var(--secondary-color);
}

.logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
    transition: transform var(--transition-normal);
}

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

.footer-logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
    margin-bottom: var(--spacing-sm);
    transition: transform var(--transition-normal);
}

.footer-logo a:hover .footer-logo-img {
    transform: scale(1.05);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: width var(--transition-normal);
}

.nav-link:hover,
.nav-link.active {
    color: var(--secondary-color);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

/* PC端隐藏汉堡菜单 */
@media (min-width: 993px) {
    .mobile-menu-toggle {
        display: none;
    }
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    transition: all var(--transition-fast);
    border-radius: 2px;
}

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

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

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ==========================================
   Hero Section
   ========================================== */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding-top: 80px;
}

.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
}

/* 备用渐变背景（当视频未加载或不可用时显示） */
.hero-video:not([src]), 
.hero-video source:not([src]) {
    display: none;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(26, 58, 95, 0.7) 0%, 
        rgba(10, 22, 40, 0.8) 50%, 
        rgba(26, 58, 95, 0.7) 100%
    );
    z-index: 0;
}

/* 如果没有视频，显示渐变背景 */
.hero-section:not(:has(.hero-video[src])) .hero-overlay {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--dark-color) 50%, var(--primary-color) 100%);
    animation: gradientShift 15s ease infinite;
    background-size: 200% 200%;
}

.hero-content {
    position: relative;
    z-index: 1;
    width: 100%;
}

.hero-text {
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
    text-align: center;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    color: #fff;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero-title-line {
    display: block;
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
}

.hero-title-line:nth-child(1) {
    animation-delay: 0.2s;
}

.hero-title-line:nth-child(2) {
    animation-delay: 0.4s;
}

.hero-title-line.highlight {
    color: var(--secondary-color);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-description {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.6s;
    opacity: 0;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.8s;
    opacity: 0;
}

/* ==========================================
   Buttons
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-normal);
}

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

.btn-primary:hover {
    background: transparent;
    color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border-color: #fff;
}

.btn-secondary:hover {
    background: #fff;
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

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

.btn-block {
    width: 100%;
    justify-content: center;
}

/* ==========================================
   Hero Stats
   ========================================== */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-xl) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-item {
    text-align: center;
    color: #fff;
}

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* ==========================================
   Scroll Indicator
   ========================================== */
.hero-scroll {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-indicator {
    width: 30px;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 15px;
    position: relative;
}

.scroll-indicator span {
    width: 4px;
    height: 8px;
    background: var(--secondary-color);
    border-radius: 2px;
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s ease-in-out infinite;
}

@keyframes scroll {
    0%, 100% { top: 10px; opacity: 1; }
    50% { top: 30px; opacity: 0.3; }
}

/* ==========================================
   Section Header
   ========================================== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    display: inline-block;
    position: relative;
}

.section-title-line {
    display: block;
    width: 60px;
    height: 4px;
    background: var(--secondary-color);
    margin: var(--spacing-sm) auto 0;
    border-radius: 2px;
}

.section-description {
    font-size: 1.1rem;
    color: var(--gray-color);
    max-width: 700px;
    margin: 0 auto;
}

/* ==========================================
   Products Section
   ========================================== */
.products-section {
    background: #fff;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.product-card {
    background: #fff;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--secondary-color);
}

.product-image {
    position: relative;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

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

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

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26, 58, 95, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.product-card:hover .product-overlay {
    opacity: 1;
}

.product-detail-link {
    color: #fff;
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.product-card:hover .product-detail-link {
    transform: translateY(0);
}

.product-content {
    padding: var(--spacing-lg);
}

.product-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.product-description {
    color: var(--gray-color);
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
}

.product-features {
    list-style: none;
    padding: 0;
}

.product-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--gray-color);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.product-features li i {
    color: var(--secondary-color);
}

/* ==========================================
   Solutions Section
   ========================================== */
.solutions-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.solution-item {
    position: relative;
    height: 280px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.solution-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(26, 58, 95, -0.1) 0%, rgba(74, 144, 226, -0.1) 100%);
    transition: all var(--transition-normal);
}

.solution-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.solution-item:hover::before {
    background: linear-gradient(135deg, rgba(26, 58, 95, 0.95) 0%, rgba(255, 107, 53, 0.9) 100%);
}

.solution-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26, 58, 95, 0.7);
    transition: all var(--transition-normal);
}

.solution-content {
    position: relative;
    z-index: 1;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    text-align: center;
    color: #fff;
}

.solution-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: var(--spacing-sm);
    transition: all var(--transition-normal);
}

.solution-item:hover .solution-title {
    transform: translateY(-5px);
}

.solution-description {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* ==========================================
   About Section
   ========================================== */
.about-section {
    background: #fff;
}

/* ==========================================
   About Section - 新布局
   ========================================== */

/* 新的布局容器 */
.about-layout {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xxl);
}

/* 居中的模块标题 */
.about-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.about-header .section-title {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

.about-header .section-description {
    text-align: center;
    margin-top: var(--spacing-sm);
}

/* 上部：左侧文字 + 右侧视频 */
.about-top {
    display: flex;
    gap: var(--spacing-xxl);
    align-items: flex-start;
}

/* 左侧文字区域 */
.about-left {
    flex: 0 0 40%;
    max-width: 40%;
}

/* 右侧视频区域 */
.about-right {
    flex: 1;
}

/* 文字区域样式 */
.about-left .about-text {
    margin-top: 0;
}

.about-text p {
    color: var(--gray-color);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

/* 核心优势横向排列 - 移到下方 */
.about-features {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--border-color);
}

.about-feature {
    flex: 1;
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    padding: var(--spacing-lg);
    background: var(--light-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.about-feature:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.feature-number {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--secondary-color);
    min-width: 60px;
    line-height: 1;
}

.feature-text h4 {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.feature-text p {
    color: var(--gray-color);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* 视频容器样式 */
.video-wrapper {
    position: relative;
    width: 100%;
    height: 400px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

/* 保利威播放器容器样式 */
.video-wrapper #plv_978402e7f66633993ff3baa2039ce8c2_9 {
    width: 100% !important;
    height: 100% !important;
    background: #000 !important;
}

.video-wrapper iframe,
.video-wrapper .polyv-player-wrap {
    position: absolute;
    top: 0;
    left: 0;
    width: 100% !important;
    height: 100% !important;
    border: none;
}

/* 确保保利威视频内容可见 */
.video-wrapper > div:first-of-type:not(.video-wrapper) {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
}

.video-player {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: none;
}

.video-player.visible {
    display: block;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}


/* 横向时间线样式已删除 */

/* ==========================================
   Contact Section
   ========================================== */
.contact-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
}

.info-item {
    display: flex;
    align-items: flex-start;  /* 确保顶部对齐 */
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.info-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.info-icon {
    width: 50px;
    height: 50px;
    min-width: 50px;  /* 确保固定宽度 */
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.info-content h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.info-content p {
    color: var(--gray-color);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.social-link {
    width: 45px;
    height: 45px;
    background: var(--primary-color);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all var(--transition-normal);
}

.social-link:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* Contact Map */
.contact-map-wrapper {
    background: #fff;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    height: 450px;
    display: flex;
    flex-direction: column;
}

.map-container {
    flex: 1;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: #f0f0f0;
    min-height: 380px;
}

.map-container #amapContainer {
    width: 100%;
    height: 100%;
}

.map-info {
    padding: var(--spacing-md) 0;
    text-align: center;
}

.map-info h4 {
    color: var(--primary-color);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xs);
}

.map-info p {
    color: var(--gray-color);
    font-size: 0.9rem;
}

/* 地图加载中的占位样式 */
.map-container:not(:has(#amapContainer)) {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--dark-color) 100%);
    color: #fff;
}

/* ==========================================
   Back to Top
   ========================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--secondary-color);
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 999;
}

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

.back-to-top:hover {
    background: var(--primary-color);
    transform: translateY(-5px);
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background: var(--dark-color);
    color: #fff;
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-logo a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
    text-decoration: none;
    text-align: center;
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    margin: var(--spacing-md) 0;
    font-size: 0.95rem;
}

.footer-contact p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-sm);
}

.footer-contact i {
    color: var(--secondary-color);
    margin-right: var(--spacing-sm);
}

.footer-links h4 {
    color: #fff;
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--secondary-color);
}

/* WeChat QR */
.footer-wechat h4 {
    color: #fff;
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.wechat-qr {
    background: #fff;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
}

.qr-code {
    width: 150px;
    height: 150px;
    margin: 0 auto var(--spacing-sm);
    border: 2px solid var(--secondary-color);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.qr-code img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.wechat-qr p {
    color: var(--dark-color);
    font-size: 0.9rem;
    font-weight: 500;
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-copyright p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    margin-left: var(--spacing-md);
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.footer-legal a:hover {
    color: var(--secondary-color);
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 992px) {
    :root {
        --spacing-xxl: 60px;
    }

    /* 新布局响应式 */
    .about-top {
        flex-direction: column;
    }

    .about-left {
        flex: none;
        max-width: 100%;
        width: 100%;
    }

    .about-right {
        width: 100%;
    }

    .about-features {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .about-feature {
        flex-direction: row;
        align-items: center;
    }

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

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }

    

    

    .timeline-item {
        display: flex;
        gap: var(--spacing-md);
        align-items: center;
    }

    .timeline-year {
        margin: 0;
    }
}

@media (max-width: 768px) {
    /* 桌面端导航在移动端隐藏 */
    header .nav {
        display: none;
    }
    
    header .nav-list {
        display: none;
    }

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

    .hero-stats {
        grid-template-columns: 1fr;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

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

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

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .footer-legal a {
        margin: 0 var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-xl: 30px;
        --spacing-xxl: 40px;
    }

    .hero-stats {
        gap: var(--spacing-md);
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .section-header {
        margin-bottom: var(--spacing-xl);
    }

    .contact-map-wrapper {
        height: 350px;
        padding: var(--spacing-sm);
    }

    .info-item {
        padding: var(--spacing-md);
    }
}

/* ==========================================
   Custom Scrollbar
   ========================================== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--light-color);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* ==========================================
   Print Styles
   ========================================== */
@media print {
    .header,
    .hero-scroll,
    .back-to-top {
        display: none;
    }

    .hero-section {
        min-height: auto;
        padding: var(--spacing-lg) 0;
    }
}

/* ==========================================
   Language Switcher
   ========================================== */
.language-switcher {
    position: relative;
    margin-left: var(--spacing-lg);
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.95rem;
    color: var(--primary-color);
    font-weight: 500;
    transition: all var(--transition-fast);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.lang-btn:hover {
    background: var(--primary-color);
    color: #fff;
    box-shadow: 0 4px 12px rgba(0, 51, 102, 0.2);
}

.lang-btn i:last-child {
    font-size: 0.7rem;
    transition: transform var(--transition-fast);
}

.lang-dropdown.active .lang-btn i:last-child {
    transform: rotate(180deg);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + var(--spacing-sm));
    right: 0;
    min-width: 150px;
    background: #fff;
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-sm);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    z-index: 1000;
    overflow: hidden;
}

.lang-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: none;
    border: none;
    text-align: left;
    font-size: 0.95rem;
    color: var(--primary-color);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-option:hover {
    background: var(--light-color);
}

.lang-option.active {
    background: var(--primary-color);
    color: #fff;
}

/* ==========================================
   Certificates Section
   ========================================== */
.certificates-section {
    background: #fff;
}

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

.certificates-slider {
    display: flex;
    gap: var(--spacing-lg);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: var(--spacing-md) 0;
}

.certificates-slider::-webkit-scrollbar {
    display: none;
}

.certificate-item {
    flex: 0 0 calc(33.333% - var(--spacing-lg));
    scroll-snap-align: start;
}

.certificate-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    box-shadow: var(--shadow-md);
}

.certificate-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: var(--secondary-color);
}

.certificate-img {
    width: 100%;
    height: 300px;
    object-fit: contain;
    background: #fff;
    transition: transform var(--transition-normal);
    animation: certificateFloat 3s ease-in-out infinite;
}

@keyframes certificateFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.certificate-card:hover .certificate-img {
    animation: certificatePulse 1s ease-in-out;
}

@keyframes certificatePulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.certificate-content {
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
}

.certificate-card:hover .certificate-content {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
}

.certificate-content h3 {
    font-size: 1.2rem;
    color: #fff;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.certificate-desc {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9rem;
    line-height: 1.6;
}

.slider-controls {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.slider-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary-color);
    color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.slider-btn:hover {
    background: var(--secondary-color);
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.slider-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.slider-dots {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border-color);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.slider-dot.active {
    background: var(--secondary-color);
    transform: scale(1.2);
}

.slider-dot:hover {
    background: var(--primary-color);
}

/* ==========================================
   Cases Section
   ========================================== */
.cases-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.case-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.case-image {
    position: relative;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

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

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

.case-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26, 58, 95, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.case-card:hover .case-overlay {
    opacity: 1;
}

.case-view-link {
    color: #fff;
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.case-card:hover .case-view-link {
    transform: translateY(0);
}

.case-content {
    padding: var(--spacing-xl);
}

.case-category {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--secondary-color);
    color: #fff;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
}

.case-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
}

.case-description {
    color: var(--gray-color);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
    font-size: 0.95rem;
}

.case-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

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

.case-stat .stat-label {
    display: block;
    font-size: 0.85rem;
    color: var(--gray-color);
    margin-bottom: var(--spacing-xs);
}

.case-stat .stat-value {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-color);
}

/* ==========================================
   Updated Contact Section
   ========================================== */
.contact-info-full {
    max-width: 800px;
    margin: 0 auto;
}

.contact-info-full .info-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.contact-info-full .info-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.contact-info-full .info-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.8rem;
    flex-shrink: 0;
}

.contact-info-full .info-content h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
    font-size: 1.1rem;
}

.contact-info-full .info-content p {
    color: var(--gray-color);
    font-size: 1rem;
}

.contact-info-full .social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
    justify-content: center;
}

.contact-info-full .social-link {
    width: 55px;
    height: 55px;
    background: var(--primary-color);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: all var(--transition-normal);
}

.contact-info-full .social-link:hover {
    background: var(--secondary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* ==========================================
   Updated Responsive Design
   ========================================== */
@media (max-width: 992px) {
    .language-switcher {
        display: none;
    }

    .certificate-item {
        flex: 0 0 calc(50% - var(--spacing-lg));
    }

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

@media (max-width: 768px) {
    .certificate-item {
        flex: 0 0 calc(100% - var(--spacing-lg));
    }

    .slider-controls {
        gap: var(--spacing-md);
    }

    .slider-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .case-stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .contact-info-full .info-item {
        padding: var(--spacing-md);
    }

    .contact-info-full .info-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }

    .video-wrapper {
        height: 300px;
    }
}

/* ==========================================
   News and Articles Section
   ========================================== */
.news-articles-section {
    background: #f8f9fa;
}

.news-articles-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
}

/* News Section */
.news-section,
.articles-section {
    background: #fff;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.news-list,
.articles-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.news-item {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    border-left: 3px solid var(--secondary-color);
    background: #f8f9fa;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.news-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
    background: #fff;
}

.news-date {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
    color: #fff;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    min-width: 70px;
    height: 80px;
}

.date-day {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1;
}

.date-month {
    font-size: 0.9rem;
    margin-top: var(--spacing-xs);
}

.date-year {
    font-size: 0.75rem;
    opacity: 0.8;
}

.news-content {
    flex: 1;
}

.news-title {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    line-height: 1.4;
}

.news-summary {
    font-size: 0.95rem;
    color: var(--gray-color);
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-link {
    color: var(--secondary-color);
    font-weight: 500;
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.news-link:hover {
    color: var(--primary-color);
}

/* Articles Section */
.article-item {
    background: #f8f9fa;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    border: 1px solid transparent;
}

.article-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    background: #fff;
    border-color: var(--border-color);
}

.article-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: #fff;
    font-size: 1.8rem;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.article-content {
    background: #fff;
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    line-height: 1.8;
}

.article-header {
    background: #fff;
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.article-footer {
    background: #fff;
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.article-title {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    line-height: 1.4;
}

.article-summary {
    font-size: 0.95rem;
    color: var(--gray-color);
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.article-category {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--secondary-color);
    color: #fff;
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
}

.article-views {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.85rem;
    color: var(--gray-color);
}

.article-link {
    color: var(--secondary-color);
    font-weight: 500;
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.article-link:hover {
    color: var(--primary-color);
}

/* News & Articles Responsive */
@media (max-width: 992px) {
    .news-articles-grid {
        grid-template-columns: 1fr;
    }

    .news-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .news-date {
        flex-direction: row;
        gap: var(--spacing-sm);
        min-width: auto;
        height: auto;
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .date-day {
        font-size: 1.2rem;
    }

    .date-month {
        margin-top: 0;
    }

    .article-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
}

/* ==========================================
   Hero Video Background Enhancements
   ========================================== */

/* 视频加载指示器 */
.hero-video:empty::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 50px;
    height: 50px;
    margin: -25px 0 0 -25px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--secondary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 视频容器的响应式调整 */
@media (max-width: 768px) {
    .hero-video {
        object-position: center center;
    }
}

/* 确保视频在其他元素下方 */
.hero-section {
    overflow: hidden;
}

/*     首页样式↑       */







/* ==========================================
   栏目页/内页样式（已去除与首页冲突的选择器）
   ========================================== */


.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
}
.logo a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}
.logo a:hover {
    color: var(--secondary-color);
}
.logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
    transition: transform var(--transition-normal);
}
.logo a:hover .logo-img {
    transform: scale(1.05);
}
.footer-logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
    margin-bottom: var(--spacing-sm);
    transition: transform var(--transition-normal);
}
.footer-logo a:hover .footer-logo-img {
    transform: scale(1.05);
}
.nav-link.active {
    color: var(--secondary-color);
}
.nav-link.active::after {
    width: 100%;
}
.language-switcher {
    position: relative;
    display: inline-block;
}
.lang-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 20px;
    color: #ff0000;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s ease;
}
.lang-btn:hover {
    background: rgba(255,255,255,0.2);
}
.lang-btn i {
    font-size: 0.9rem;
}
.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1001;
    min-width: 100px;
}
.language-switcher:hover .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.lang-option {
    display: block;
    padding: 10px 16px;
    color: #333;
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}
.lang-option:hover {
    background: #f5f7fa;
    color: #667eea;
}
.lang-option.active {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff;
}
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover {
    color: var(--secondary-color);
}
ul, ol {
    list-style: none;
}
button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}
input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}
.section-bg-light {
    background-color: var(--bg-secondary);
}
.section-bg-dark {
    background-color: var(--bg-dark);
    color: var(--white-color);
}
.grid {
    display: grid;
    gap: var(--spacing-lg);
}
.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}
.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}
.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}
@media (max-width: 992px) {
    .grid-3, .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 576px) {
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
}
.flex {
    display: flex;
}
.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}
.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }
.mt-5 { margin-top: var(--spacing-xxl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }
.mb-5 { margin-bottom: var(--spacing-xxl); }

.page-banner {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white-color);
    padding: var(--spacing-xxl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.page-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></svg>');
    background-size: 50px 50px;
    opacity: 0.5;
}
.page-banner h1 {
    font-size: var(--font-size-display);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 1;
}
.page-banner p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    position: relative;
    z-index: 1;
}
.breadcrumb-wrapper {
    background-color: var(--bg-secondary);
    padding: var(--spacing-md) 0;
}
.product-detail-section {
    padding: var(--spacing-xl) 0;  /* 濠⒀呭仜婵偞绂嶉崱鏇犵憪闁哄倸缍婂Λ璺ㄦ崉閿燂拷 */
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}
.breadcrumb a {
    color: var(--text-secondary);
}
.breadcrumb a:hover {
    color: var(--secondary-color);
}
.breadcrumb span:not(:last-child)::after {
    content: '/';
    margin-left: var(--spacing-sm);
    color: var(--gray-light);
}
.breadcrumb .current {
    color: var(--primary-color);
}
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--gray-light);
    border-top-color: var(--secondary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--secondary-color);
    color: var(--white-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: var(--z-sticky);
}
.back-to-top.show {
    opacity: 1;
    visibility: visible;
}
.back-to-top:hover {
    background: var(--secondary-dark);
    transform: translateY(-5px);
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}
.video-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.img-placeholder {
    background: linear-gradient(135deg, var(--gray-light), var(--gray-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white-color);
    font-size: var(--font-size-sm);
}
.header-top {
    background-color: var(--bg-dark);
    color: var(--white-color);
    padding: var(--spacing-sm) 0;
    font-size: var(--font-size-sm);
}
.header-top-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.header-contact {
    display: flex;
    gap: var(--spacing-xl);
}
.header-contact span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}
.header-contact i {
    color: var(--secondary-color);
}
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}
@media (max-width: 768px) {
    .header-top {
        display: none;
    }
}
.header-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}
.logo img {
    height: 50px;
    width: auto;
}
.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1.2;
}
.logo-tagline {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}
@media (max-width: 576px) {
    .logo-text {
        font-size: var(--font-size-lg);
    }
    
    .logo-tagline {
        display: none;
    }
}
.nav-item.active .nav-link {
    color: var(--secondary-color);
}
.nav-item.active .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--secondary-color);
    border-radius: 2px 2px 0 0;
}
.nav-dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    min-width: 200px;
    background: var(--white-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    padding: var(--spacing-sm) 0;
}
.nav-dropdown-item a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}
.nav-dropdown-item a:hover {
    background: var(--light-gray);
    color: var(--secondary-color);
}
.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: all var(--transition-fast);
}
.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}
.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}
@media (max-width: 992px) {
    /* 桌面端导航在移动端隐藏 */
    header .nav {
        display: none;
    }
    
    header .nav-list {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
}
.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9998;
    opacity: 0;
    transition: opacity 0.3s ease;
}
.mobile-menu-overlay.active {
    display: block;
    opacity: 1;
}
/* 移动端菜单容器基础样式 - 从右侧滑出 */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: #fff;
    z-index: 9999;
    transition: right 0.3s ease;
    overflow-y: auto;
    box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
}
.mobile-menu.active {
    right: 0;
}
.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: var(--primary-color);
    color: #fff;
}
.mobile-menu-title {
    font-size: 18px;
    font-weight: 600;
}
.mobile-menu-close {
    background: none;
    border: none;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
    padding: 5px;
    line-height: 1;
}
.mobile-nav {
    padding: 20px 0;
}
.mobile-nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.mobile-nav-list li a {
    display: block;
    padding: 15px 20px;
    color: var(--text-primary);
    text-decoration: none;
    border-bottom: 1px solid #eee;
    transition: background 0.3s, color 0.3s;
}
.mobile-nav-list li a.active {
    background: var(--primary-color);
    color: #fff;
}
.mobile-lang-switch {
    display: flex;
    padding: 15px 20px;
    gap: 10px;
}
.mobile-lang-switch a {
    padding: 8px 15px;
    background: #f5f5f5;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 4px;
    font-size: 14px;
}
.mobile-lang-switch a.active {
    background: var(--primary-color);
    color: #fff;
}
.mobile-contact {
    padding: 20px;
    background: #f9f9f9;
}
.mobile-contact p {
    margin: 0;
    font-size: 14px;
    color: var(--text-secondary);
}
.mobile-contact i {
    color: var(--primary-color);
    margin-right: 8px;
}
@media (min-width: 769px) {
    header .mobile-menu {
        display: none;
    }
    
    header .mobile-menu-overlay {
        display: none;
    }
}
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}
.header-phone {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--secondary-color);
    font-weight: 600;
}
.header-phone i {
    font-size: var(--font-size-xl);
}
@media (max-width: 768px) {
    .header-phone {
        display: none;
    }
}
.footer-main {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xxl);
    padding-bottom: var(--spacing-xxl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
@media (max-width: 992px) {
    .footer-main {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 576px) {
    .footer-main {
        grid-template-columns: 1fr;
    }
}
.footer-about {
    max-width: 350px;
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}
.footer-logo img {
    height: 50px;
}
.footer-logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
}
.footer-about p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}
.footer-social {
    display: flex;
    gap: var(--spacing-md);
}
.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: all var(--transition-fast);
}
.footer-social a:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
}
.footer-social i {
    font-size: var(--font-size-lg);
}
.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}
@media (max-width: 991px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 575px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
}
.footer-col h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--white-color);
    position: relative;
    padding-bottom: var(--spacing-sm);
}
.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--secondary-color);
}
.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}
.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}
.footer-links a::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--secondary-color);
    border-radius: 50%;
    opacity: 0;
    transition: opacity var(--transition-fast);
}
.footer-links a:hover {
    color: var(--white-color);
    padding-left: var(--spacing-md);
}
.footer-links a:hover::before {
    opacity: 1;
}
.footer-contact {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}
.footer-contact p {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}
.footer-contact i {
    color: var(--secondary-color);
    font-size: var(--font-size-base);
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}
.footer-social {
    display: flex;
    gap: var(--spacing-sm);
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-wechat {
    text-align: center;
}
.footer-wechat-img {
    width: 120px;
    height: 120px;
    background: var(--white-color);
    border-radius: var(--radius-md);
    margin: 0 auto var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.footer-wechat-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.footer-wechat p {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
}
.footer-bottom {
    padding: var(--spacing-lg) 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}
.footer-copyright {
    color: rgba(255, 255, 255, 0.5);
    font-size: var(--font-size-sm);
}
.footer-copyright a {
    color: var(--secondary-color);
}
.footer-links-bottom {
    display: flex;
    gap: var(--spacing-lg);
}
.footer-links-bottom a {
    color: rgba(255, 255, 255, 0.5);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}
.footer-links-bottom a:hover {
    color: var(--white-color);
}
@media (max-width: 576px) {
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}
.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}
.footer-logo a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
    text-decoration: none;
    text-align: center;
}
.footer-description {
    color: rgba(255, 255, 255, 0.7);
    margin: var(--spacing-md) 0;
    font-size: 0.95rem;
}
.footer-contact p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-sm);
}
.footer-contact i {
    color: var(--secondary-color);
    margin-right: var(--spacing-sm);
}
.footer-links h4 {
    color: #fff;
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}
.footer-links ul {
    list-style: none;
}
.footer-links li {
    margin-bottom: var(--spacing-sm);
}
.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--transition-fast);
}
.footer-links a:hover {
    color: var(--secondary-color);
}
.footer-wechat h4 {
    color: #fff;
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}
.wechat-qr {
    background: #fff;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
}
.qr-code {
    width: 150px;
    height: 150px;
    margin: 0 auto var(--spacing-sm);
    border: 2px solid var(--secondary-color);
    border-radius: var(--radius-sm);
    overflow: hidden;
}
.qr-code img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.wechat-qr p {
    color: var(--dark-color);
    font-size: 0.9rem;
    font-weight: 500;
}
.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}
.footer-copyright p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}
.footer-legal a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    margin-left: var(--spacing-md);
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}
.footer-legal a:hover {
    color: var(--secondary-color);
}
@media (max-width: 992px) {
    :root {
        --spacing-xxl: 60px;
    }

    /* 闁哄倹婢樼粩椋庝沪閳ь剟宕鍛畨鐎殿噯鎷� */
    .about-top {
        flex-direction: column;
    }

    .about-left {
        flex: none;
        max-width: 100%;
        width: 100%;
    }

    .about-right {
        width: 100%;
    }

    .about-features {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .about-feature {
        flex-direction: row;
        align-items: center;
    }

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

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }

    

    

    .timeline-item {
        display: flex;
        gap: var(--spacing-md);
        align-items: center;
    }

    .timeline-year {
        margin: 0;
    }
}
@media (max-width: 768px) {
    /* 桌面端导航在移动端隐藏 */
    header .nav {
        display: none;
    }
    
    header .nav-list {
        display: none;
    }

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

    .hero-stats {
        grid-template-columns: 1fr;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

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

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

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .footer-legal a {
        margin: 0 var(--spacing-sm);
    }
}
@media (max-width: 480px) {
    :root {
        --spacing-xl: 30px;
        --spacing-xxl: 40px;
    }

    .hero-stats {
        gap: var(--spacing-md);
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .section-header {
        margin-bottom: var(--spacing-xl);
    }

    .contact-map-wrapper {
        height: 350px;
        padding: var(--spacing-sm);
    }

    .info-item {
        padding: var(--spacing-md);
    }
}
.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(10, 61, 98, 0.9) 0%, rgba(0, 0, 0, 0.8) 100%);
    z-index: 1;
}
.hero-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}
.hero-title span {
    color: var(--secondary-color);
}
.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.5rem);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xxl);
    line-height: 1.6;
}
.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}
.hero-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    min-width: 160px;
    justify-content: center;
}
.hero-btn-primary {
    background: var(--secondary-color);
    color: var(--white-color);
    border: 2px solid var(--secondary-color);
}
.hero-btn-primary:hover {
    background: transparent;
    color: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255, 107, 0, 0.3);
}
.hero-btn-secondary {
    background: transparent;
    color: var(--white-color);
    border: 2px solid var(--white-color);
}
.hero-btn-secondary:hover {
    background: var(--white-color);
    color: var(--primary-color);
    transform: translateY(-3px);
}
.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xxl);
    margin-top: var(--spacing-xxl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}
.hero-stat {
    text-align: center;
}
.hero-stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    display: block;
}
.hero-stat-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
    margin-top: var(--spacing-xs);
}
.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}
.hero-scroll a {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--white-color);
    text-decoration: none;
    opacity: 0.7;
    transition: opacity var(--transition-normal);
}
.hero-scroll a:hover {
    opacity: 1;
}
.hero-scroll span {
    font-size: 0.8rem;
    margin-bottom: var(--spacing-sm);
}
.hero-scroll i {
    animation: bounce 2s infinite;
}
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}
@media (max-width: 768px) {
    .hero-section {
        min-height: 100vh;
    }

    .hero-content {
        padding: 0 var(--spacing-md);
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-btn {
        width: 100%;
        max-width: 280px;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .hero-stat {
        padding: var(--spacing-md);
        background: rgba(255, 255, 255, 0.1);
        border-radius: var(--radius-md);
    }
}
.page-banner {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    padding: var(--spacing-xxxl) 0;
    text-align: center;
    color: var(--white-color);
    position: relative;
    overflow: hidden;
}
.page-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></svg>');
    background-size: 50px;
}
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}
.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="0.5"/></svg>');
    background-size: 30px 30px;
} */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xl);
    backdrop-filter: blur(10px);
}
.hero-badge i {
    color: var(--secondary-color);
}
.hero-title span {
    color: var(--secondary-color);
}
.hero-description {
    font-size: var(--font-size-xl);
    opacity: 0.9;
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}
.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xxl);
}
.hero-stats {
    display: flex;
    gap: var(--spacing-xxl);
}
.hero-stat {
    text-align: center;
}
.hero-stat-number {
    font-size: var(--font-size-display);
    font-weight: 700;
    color: var(--secondary-color);
    line-height: 1;
}
.hero-stat-label {
    font-size: var(--font-size-sm);
    opacity: 0.8;
    margin-top: var(--spacing-xs);
}
@media (max-width: 768px) {
    .hero-section {
        min-height: auto;
        padding: var(--spacing-xxxl) 0;
    }
    
    .hero-title {
        font-size: var(--font-size-xxxl);
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: var(--spacing-xl);
    }
    
    .hero-stat {
        flex: 1;
        min-width: 100px;
    }
}
.video-fallback {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    z-index: -1;
}
.features-section {
    padding: var(--spacing-xxxl) 0;
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
}
@media (max-width: 992px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 576px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}
.feature-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--white-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}
.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}
.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--white-color);
}
.feature-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}
.feature-description {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    line-height: 1.6;
}
@media (max-width: 992px) {
    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 576px) {
    .solutions-grid {
        grid-template-columns: 1fr;
    }
}
.solution-card {
    position: relative;
    height: 300px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    cursor: pointer;
}
.solution-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    transition: transform var(--transition-slow);
}-->
.solution-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transition: transform 0.5s ease;
    opacity: 0.8;  /* 婵烇綀顕ф慨鐐存交濞嗘帩鏀介悹瀣暞閺嗭綁宕堕崜褍顣婚梺顐㈢箲濡叉垶鎯旈敓锟� */
}
.solution-card:hover .solution-bg {
    transform: scale(1.1);
}
.solution-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}
.solution-card:hover img {
    transform: scale(1.1);
}
.solution-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.5));
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-xl);
    transition: background var(--transition-normal);
}
.solution-card:hover .solution-overlay {
    background: linear-gradient(to bottom, rgba(255, 102, 0, 0.4), rgba(0, 0, 0, 0.6));
}
.solution-icon {
    width: 60px;
    height: 60px;
    background: var(--white-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-normal);
}
.solution-icon i {
    font-size: 1.5rem;
    color: var(--secondary-color);
}
.solution-card:hover .solution-icon {
    background: var(--secondary-color);
}
.solution-card:hover .solution-icon i {
    color: var(--white-color);
}
.solution-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--white-color);
    margin-bottom: var(--spacing-sm);
}
.solution-description {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}
.about-preview-section {
    padding: var(--spacing-xxxl) 0;
}
.about-preview-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}
@media (max-width: 992px) {
    .about-preview-content {
        grid-template-columns: 1fr;
    }
}
.about-preview-text h2 {
    font-size: var(--font-size-xxxl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
}
.about-preview-text h2 span {
    color: var(--secondary-color);
}
.about-preview-text p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}
.about-preview-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}
.about-preview-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 500;
}
.about-preview-feature i {
    color: var(--secondary-color);
}
.about-preview-video {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}
.about-preview-video img {
    width: 100%;
    height: 350px;
    object-fit: cover;
}
.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: var(--white-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
}
.video-play-btn::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--white-color);
    animation: pulse 2s infinite;
}
.video-play-btn i {
    font-size: 1.5rem;
    color: var(--secondary-color);
    position: relative;
    z-index: 1;
}
.video-play-btn:hover {
    transform: translate(-50%, -50%) scale(1.1);
}
@media (max-width: 992px) {
    .news-grid {
        grid-template-columns: 1fr;
    }
}
.news-image {
    flex-shrink: 0;
    width: 200px;
}
.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
@media (max-width: 576px) {
    .news-card {
        flex-direction: column;
    }
    
    .news-image {
        width: 100%;
        height: 200px;
    }
}
.news-content {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.news-date {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
}
.news-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    transition: color var(--transition-fast);
}
.news-excerpt {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.cta-section {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    padding: var(--spacing-xxxl) 0;
    text-align: center;
    color: var(--white-color);
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 102, 0, 0.2), transparent);
    border-radius: 50%;
}
.cta-content {
    position: relative;
    z-index: 1;
}
.cta-title {
    font-size: var(--font-size-xxxl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}
.cta-description {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}
.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
}
@media (max-width: 576px) {
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}
.partners-section {
    padding: var(--spacing-xxl) 0;
}
.partners-grid {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
}
.partner-logo {
    flex: 1;
    min-width: 150px;
    max-width: 200px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    filter: grayscale(100%);
    opacity: 0.6;
    transition: all var(--transition-normal);
}
.partner-logo:hover {
    filter: grayscale(0);
    opacity: 1;
    box-shadow: var(--shadow-md);
}
.partner-logo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}
.page-banner {
    position: relative;
    padding: 120px 0 60px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #0a3d62 100%);
    text-align: center;
}
.page-banner h1 {
    font-size: 2.5rem;
    color: var(--white-color);
    margin-bottom: var(--spacing-md);
}
.page-banner p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 600px;
    margin: 0 auto;
}
.breadcrumb-wrapper {
    background: var(--light-color);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-color);
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
}
.breadcrumb a {
    color: var(--gray-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}
.breadcrumb a:hover {
    color: var(--primary-color);
}
.breadcrumb span {
    color: var(--gray-color);
}
.breadcrumb span:last-child {
    color: var(--primary-color);
    font-weight: 500;
}
.breadcrumb-separator {
    color: var(--gray-light);
}
.solution-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal);
}
.solution-card:hover {
    transform: translateY(-10px);
}
.solution-card img {
    width: 100%;
    height: 280px;
    object-fit: cover;
}
.solution-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-lg);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent);
    color: var(--white-color);
}
.solution-card h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
}
.solution-card p {
    font-size: 0.9rem;
    opacity: 0.9;
    margin: 0;
}
.certificates-section .section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}
.certificates-carousel {
    position: relative;
    overflow: hidden;
    padding: 0 var(--spacing-xxl);
}
.certificates-track {
    display: flex;
    gap: var(--spacing-lg);
    transition: transform 0.5s ease;
}
.certificates-track {
    display: flex;
    transition: transform 0.5s ease;
}
.certificates-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}
.certificate-card img {
    width: 100%;
    height: 180px;
    object-fit: contain;
    background: #f5f5f5;
    padding: var(--spacing-md);
    box-sizing: border-box;
}
.certificate-info {
    position: relative;
    padding: var(--spacing-md);
    background: var(--white-color);
    text-align: center;
}
.certificate-info h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}
.certificate-info p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 50%;
    background: var(--white-color);
    color: var(--primary-color);
    cursor: pointer;
    z-index: 10;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: center;
}
.carousel-btn:hover {
    background: var(--primary-color);
    color: var(--white-color);
    transform: translateY(-50%) scale(1.1);
}
.carousel-btn.prev {
    left: 0;
}
.carousel-btn.next {
    right: 0;
}
.carousel-indicators {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: var(--spacing-xl);
}
.carousel-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
}
.carousel-indicator:hover {
    background: var(--secondary-color);
}
.carousel-indicator.active {
    background: var(--primary-color);
    width: 30px;
    border-radius: 6px;
}
@media (max-width: 991px) {
    .certificate-card {
        flex: 0 0 calc(50% - var(--spacing-lg) / 2);
    }
    
    .carousel-btn {
        width: 40px;
        height: 40px;
    }
}
@media (max-width: 575px) {
    .certificate-card {
        flex: 0 0 100%;
    }
    
    .certificates-carousel {
        padding: 0 var(--spacing-lg);
    }
    
    .carousel-btn {
        width: 36px;
        height: 36px;
    }
}
.case-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
.case-content {
    padding: var(--spacing-lg);
}
.case-content h3 {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}
.case-content p {
    font-size: 0.9rem;
    color: var(--gray-color);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}
.case-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--gray-light);
}
.news-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}
.news-content {
    padding: var(--spacing-lg);
}
.news-content h3 {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}
.news-content h3 a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}
.news-content h3 a:hover {
    color: var(--secondary-color);
}
.news-content p {
    font-size: 0.9rem;
    color: var(--gray-color);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}
.news-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--gray-light);
}
.news-date {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}
.about-preview {
    background: var(--white-color);
}
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}
.about-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.about-image img {
    width: 100%;
    height: auto;
    display: block;
}
.about-text h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
}
.about-text h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--secondary-color);
    margin-top: var(--spacing-md);
    border-radius: 2px;
}
.about-text p {
    color: var(--gray-color);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}
.about-feature i {
    color: var(--secondary-color);
}
.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0a3d62 100%);
    color: var(--white-color);
    text-align: center;
}
.cta-section h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}
.cta-section p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
}
.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}
@media (max-width: 992px) {
    .solutions-grid,
    .certificates-grid,
    .cases-grid,
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .about-image {
        order: -1;
    }
}
@media (max-width: 768px) {
    .page-banner {
        padding: 100px 0 40px;
    }

    .page-banner h1 {
        font-size: 2rem;
    }

    .section {
        padding: var(--spacing-xl) 0;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .solutions-grid,
    .certificates-grid,
    .cases-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }

    .about-features {
        grid-template-columns: 1fr;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
}
.page-banner {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    padding: var(--spacing-xxl) 0;
    text-align: center;
    color: var(--white-color);
    position: relative;
    overflow: hidden;
}
.page-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 102, 0, 0.3), transparent);
    border-radius: 50%;
}
.page-banner h1 {
    font-size: var(--font-size-xxxl);
    font-weight: 700;
    position: relative;
    z-index: 1;
}
.page-banner p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    margin-top: var(--spacing-md);
    position: relative;
    z-index: 1;
}
.breadcrumb-wrapper {
    background: var(--bg-secondary);
    padding: var(--spacing-md) 0;
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
}
.breadcrumb a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}
.breadcrumb a:hover {
    color: var(--secondary-color);
}
.breadcrumb span {
    color: var(--text-muted);
}
.breadcrumb .current {
    color: var(--primary-color);
    font-weight: 500;
}
.products-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--spacing-xxl);
}
@media (max-width: 992px) {
    .products-layout {
        grid-template-columns: 1fr;
    }
}
.sidebar-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--secondary-color);
}
.products-main {
    min-width: 0;
}
@media (max-width: 1200px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 576px) {
    .products-grid {
        grid-template-columns: 1fr;
    }
}
.product-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}
.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}
.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    opacity: 0;
    transition: opacity var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
}
.product-image-link {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2;
}
.view-detail {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--white-color);
    color: var(--primary-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transform: translateY(20px);
    transition: all var(--transition-normal);
}
.view-detail:hover {
    background: var(--secondary-color);
    color: var(--white-color);
}
.product-info {
    padding: var(--spacing-lg);
}
.product-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    transition: color var(--transition-fast);
}
.product-material {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: var(--spacing-xs);
}
.product-material span {
    color: var(--text-secondary);
}
.pagination {
    display: inline-block;
    padding-left: 0;
    margin: 20px 0;
    border-radius: 4px; }
.pagination > li {
    display: inline; }
.pagination > li > span {
    position: relative;
    float: left;
    padding: 6px 12px;
    line-height: 1.42857;
    text-decoration: none;
    color: #337ab7;
    background-color: #fff;
    border: 1px solid #ddd;
    margin-left: -1px; }
.pagination > li:first-child > span {
    margin-left: 0;
    border-bottom-left-radius: 4px;
    border-top-left-radius: 4px; }
.pagination > li:last-child > span {
    border-bottom-right-radius: 4px;
    border-top-right-radius: 4px; }
.pagination > li > span:focus {
    z-index: 2;
    color: #23527c;
    background-color: #eeeeee;
    border-color: #ddd; }
.pagination > .active > span:focus {
    z-index: 3;
    color: #fff;
    background-color: #337ab7;
    border-color: #337ab7;
    cursor: default; }
.product-detail-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    margin-bottom: var(--spacing-xxxl);
}
@media (max-width: 992px) {
    .product-detail-wrapper {
        grid-template-columns: 1fr;
    }
}
.product-gallery {
    position: sticky;
    top: 100px;
}
.main-image {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: var(--white-color);
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--spacing-md);
}
.main-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    cursor: zoom-in;
    transition: transform var(--transition-normal);
}
.main-image:hover img {
    transform: scale(1.05);
}
.thumbnail-list {
    display: flex;
    gap: var(--spacing-md);
    overflow-x: auto;
    padding-bottom: var(--spacing-sm);
}
.thumbnail {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all var(--transition-fast);
}
.thumbnail.active {
    border-color: var(--secondary-color);
}
.thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.product-detail-info {
    background: var(--white-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
}
.product-detail-title {
    font-size: var(--font-size-xxl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.3;
}
.product-detail-meta {
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
}
.meta-item {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
}
.article-meta {
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}
.article-meta .meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 0;
    font-size: 0.9rem;
    color: #666;
}
.meta-item:last-child {
    margin-bottom: 0;
}
.meta-label {
    color: var(--text-muted);
    min-width: 70px;
}
.meta-value {
    color: var(--text-primary);
    font-weight: 500;
}
.product-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}
.btn-consult {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--secondary-color);
    color: var(--white-color);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
}
.btn-consult:hover {
    background: var(--secondary-dark);
    transform: translateY(-2px);
}
.share-section {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}
.share-label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
}
.share-buttons {
    display: flex;
    gap: var(--spacing-md);
}
.share-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}
.share-btn:hover {
    background: var(--secondary-color);
    color: var(--white-color);
    transform: translateY(-3px);
}
.share-wechat:hover {
    background: #07C160;
}
.share-weibo:hover {
    background: #E6162D;
}
.share-qq:hover {
    background: #12B7F5;
}
.product-content-section {
    margin-bottom: var(--spacing-xxxl);
}
.product-content-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}
.product-content-header h2 {
    font-size: var(--font-size-xxxl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}
.product-content-header::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--secondary-color);
    margin: var(--spacing-md) auto 0;
    border-radius: var(--radius-full);
}
.product-content-body {
    background: var(--white-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xxl);
    box-shadow: var(--shadow-md);
    line-height: 1.8;
}
.product-content-body p {
    margin-bottom: var(--spacing-lg);
    color: var(--text-secondary);
}
.product-content-body h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--primary-color);
    margin: var(--spacing-xl) 0 var(--spacing-md);
}
.product-content-body ul {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-xl);
}
.product-content-body li {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}
.product-content-body li::marker {
    color: var(--secondary-color);
}
.related-products-section {
    background: var(--bg-secondary);
    padding: var(--spacing-xxxl) 0;
}
.related-products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
}
@media (max-width: 1200px) {
    .related-products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}
@media (max-width: 992px) {
    .related-products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 576px) {
    .related-products-grid {
        grid-template-columns: 1fr;
    }
}
.related-product-card {
    background: var(--white-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}
.related-product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}
.related-product-card a {
    display: block;
    text-decoration: none;
}
.related-product-image {
    height: 180px;
    overflow: hidden;
}
.related-product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}
.related-product-card:hover .related-product-image img {
    transform: scale(1.1);
}
.related-product-info {
    padding: var(--spacing-lg);
    text-align: center;
}
.related-product-info h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    transition: color var(--transition-fast);
}
.related-product-card:hover .related-product-info h4 {
    color: var(--secondary-color);
}
.related-product-info span {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* 相关产品项样式（新闻详情页） */

/* 标题行样式 - 简洁美观 */
.section-header-inline {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.section-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 16px;
}

.section-title-inline {
    font-size: 1.25rem;
    font-weight: 600;
    color: #333;
    margin: 0;
}

.title-underline {
    display: none;
}

.related-product-item {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.related-product-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.related-product-item .product-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.related-product-item .product-image {
    height: 200px;
    overflow: hidden;
    position: relative;
}

.related-product-item .product-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to top, rgba(0,0,0,0.3), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.related-product-item:hover .product-image::after {
    opacity: 1;
}

.related-product-item .product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.related-product-item:hover .product-image img {
    transform: scale(1.1);
}

.related-product-item .product-info {
    padding: 20px;
    text-align: center;
}

.related-product-item .product-info h4 {
    font-size: 1rem;
    font-weight: 600;
    color: #333;
    margin: 0 0 10px 0;
    transition: color 0.3s ease;
}

.related-product-item:hover .product-info h4 {
    color: var(--primary-color, #667eea);
}

.related-product-item .product-info .price {
    font-size: 0.875rem;
    color: #e74c3c;
    font-weight: 500;
}

.related-product-item .product-info .view-btn {
    display: inline-block;
    margin-top: 10px;
    padding: 8px 20px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff;
    border-radius: 20px;
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

.related-product-item:hover .product-info .view-btn {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

/* 响应式 */
@media (max-width: 768px) {
    .related-product-item .product-image {
        height: 160px;
    }
    
    .related-product-item .product-info {
        padding: 15px;
    }
    
    .related-product-item .product-info h4 {
        font-size: 0.9rem;
    }
}

.news-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--spacing-xxl);
}
@media (max-width: 992px) {
    .news-layout {
        grid-template-columns: 1fr;
    }
}
.category-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}
.category-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}
.category-item.active {
    background: var(--bg-secondary);
    border-left-color: var(--secondary-color);
    color: var(--primary-color);
}
.category-item span:first-child {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}
.category-item a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: inherit;
    text-decoration: none;
    width: 100%;
}
.category-item i {
    color: var(--secondary-color);
    font-size: var(--font-size-sm);
}
.category-count {
    font-size: var(--font-size-xs);
    background: var(--bg-secondary);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    color: var(--text-muted);
}
.news-main {
    min-width: 0;
}
.news-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}
.news-item {
    display: flex;
    gap: var(--spacing-xl);
    background: var(--white-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}
.news-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
}
@media (max-width: 768px) {
    .news-item {
        flex-direction: column;
    }
}
.news-item-image {
    flex-shrink: 0;
    width: 300px;
    height: 220px;
}
.news-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}
.news-item:hover .news-item-image img {
    transform: scale(1.1);
}
@media (max-width: 768px) {
    .news-item-image {
        width: 100%;
        height: 200px;
    }
}
.news-item-content {
    flex: 1;
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.news-item-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}
.news-item-meta span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}
.news-item-meta i {
    color: var(--secondary-color);
}
.news-item-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
    transition: color var(--transition-fast);
}
.news-item:hover .news-item-title {
    color: var(--secondary-color);
}
.news-item-excerpt {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-item-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-lg);
}
.read-more-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--secondary-color);
    font-weight: 500;
    transition: all var(--transition-fast);
}
.read-more-btn:hover {
    gap: var(--spacing-sm);
}
.tags {
    display: flex;
    gap: var(--spacing-sm);
}
.tag {
    font-size: var(--font-size-xs);
    padding: 2px 8px;
    background: var(--bg-secondary);
    color: var(--text-muted);
    border-radius: var(--radius-full);
}
.news-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}
.news-list-item {
    display: flex;
    gap: 30px;
    background: var(--white-color);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
    transition: all 0.3s ease;
}
.news-list-item:hover {
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
    transform: translateY(-3px);
}
.news-thumb-link {
    flex-shrink: 0;
}
.news-thumb {
    width: 280px;
    height: 373px; /* 3:4 ratio */
    overflow: hidden;
    position: relative;
}
.news-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.news-list-item:hover .news-thumb img {
    transform: scale(1.05);
}
.news-info {
    flex: 1;
    padding: 30px 30px 30px 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.news-info .news-meta {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 15px;
}
.news-info .news-date {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    color: #888;
}
.news-info .news-category {
    display: inline-block;
    padding: 4px 12px;
    background: linear-gradient(135deg, var(--primary-color), #0a3d62);
    color: var(--white-color);
    font-size: 0.8rem;
    border-radius: 20px;
}
.news-info .news-title {
    font-size: 1.3rem;
    margin-bottom: 15px;
    line-height: 1.4;
}
.news-info .news-title a {
    color: var(--text-primary);
    transition: color 0.3s ease;
}
.news-info .news-title a:hover {
    color: var(--primary-color);
}
.news-info .news-excerpt {
    color: #666;
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-info .news-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.3s ease;
}
.news-info .news-link:hover {
    gap: 12px;
    color: var(--secondary-color);
}
@media (max-width: 992px) {
    .news-thumb {
        width: 220px;
        height: 293px;
    }
    
    .news-info {
        padding: 20px 20px 20px 0;
    }
    
    .news-info .news-title {
        font-size: 1.15rem;
    }
}
@media (max-width: 768px) {
    .news-list-item {
        flex-direction: column;
    }
    
    .news-thumb {
        width: 100%;
        height: auto;
        aspect-ratio: 3/4;
    }
    
    .news-info {
        padding: 20px;
    }
}
@media (max-width: 480px) {
    .news-thumb {
        aspect-ratio: 4/3;
    }
    
    .news-info .news-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}
.news-thumb {
    width: 320px;
    height: 240px; /* 4:3婵絾鏌х欢锟� */
    overflow: hidden;
    position: relative;
}
.news-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.news-list-item:hover .news-thumb img {
    transform: scale(1.05);
}
@media (max-width: 992px) {
    .news-thumb {
        width: 240px;
        height: 180px;
    }
}
@media (max-width: 768px) {
    .news-list-item {
        flex-direction: column;
    }
    
    .news-thumb {
        width: 100%;
        height: auto;
        aspect-ratio: 4/3;
    }
    
    .news-info {
        padding: 20px;
    }
}
.news-article {
    background: var(--white-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--spacing-xxxl);
}
.news-article-header {
    padding: var(--spacing-xxl);
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}
.news-article-category {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-lg);
    background: var(--secondary-color);
    color: var(--white-color);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
}
.news-article-title {
    font-size: var(--font-size-xxxl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.3;
}
.news-article-meta {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xl);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}
.news-article-meta span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}
.news-article-meta i {
    color: var(--secondary-color);
}
.news-article-content {
    padding: var(--spacing-xxl);
    line-height: 1.8;
}
.news-article-content p {
    margin-bottom: var(--spacing-lg);
    color: var(--text-secondary);
    font-size: var(--font-size-base);
}
.news-article-content h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--primary-color);
    margin: var(--spacing-xxl) 0 var(--spacing-lg);
    padding-left: var(--spacing-md);
    border-left: 4px solid var(--secondary-color);
}
.news-article-content h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin: var(--spacing-xl) 0 var(--spacing-md);
}
.news-article-content img {
    max-width: 100%;
    border-radius: var(--radius-lg);
    margin: var(--spacing-xl) 0;
    box-shadow: var(--shadow-md);
}
.news-article-content ol {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-xl);
}
.news-article-content li {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}
.news-article-content blockquote {
    padding: var(--spacing-xl);
    background: var(--bg-secondary);
    border-left: 4px solid var(--secondary-color);
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    margin: var(--spacing-xl) 0;
    font-style: italic;
    color: var(--text-muted);
}
.article-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xxxl);
}
@media (max-width: 768px) {
    .article-navigation {
        grid-template-columns: 1fr;
    }
}
.nav-item.prev {
    justify-content: flex-start;
}
.nav-item.next {
    justify-content: flex-end;
    text-align: right;
}
.nav-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: 50%;
    color: var(--secondary-color);
    transition: all var(--transition-fast);
}
.nav-text {
    flex: 1;
    min-width: 0;
}
.nav-label {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-bottom: var(--spacing-xs);
}
.nav-title {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color var(--transition-fast);
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}
.stat-card {
    text-align: center;
    padding: 40px 20px;
    background: var(--white-color);
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
    transition: all 0.4s ease;
}
.stat-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.12);
}
.stat-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-color), #0a3d62);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--white-color);
}
.about-intro {
    padding: 80px 0;
    background: var(--white-color);
}
.about-intro .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.intro-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}
.intro-image {
    position: relative;
}
.image-main {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0,0,0,0.12);
}
.image-main img {
    width: 100%;
    height: auto;
    display: block;
}
.image-decoration {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 3px solid var(--primary-color);
    border-radius: 20px;
    z-index: -1;
}
.image-decoration.top-right {
    top: 20px;
    right: -20px;
}
.image-decoration.bottom-left {
    bottom: -20px;
    left: 20px;
}
.image-badge {
    position: absolute;
    bottom: -20px;
    right: 40px;
    background: var(--white-color);
    padding: 20px 25px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    text-align: center;
}
.badge-year {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}
.badge-text {
    font-size: 0.85rem;
    color: #666;
}
.intro-content h2 {
    font-size: 2rem;
    color: #333;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 15px;
}
.intro-content h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 2px;
}
.intro-lead {
    font-size: 1.1rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 15px;
}
.intro-text {
    color: #666;
    line-height: 1.8;
    margin-bottom: 25px;
}
.intro-features {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}
.intro-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #555;
    font-size: 0.95rem;
}
.intro-features li i {
    color: var(--primary-color);
}
.about-values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    margin-top: 60px;
}
.value-card-inline {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 25px;
    background: #f8f9fa;
    border-radius: 15px;
    transition: all 0.3s ease;
}
.value-card-inline:hover {
    background: var(--white-color);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transform: translateY(-5px);
}
.value-icon-inline {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), #0a3d62);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--white-color);
}
.value-content-inline {
    flex: 1;
}
.value-content-inline h4 {
    font-size: 1rem;
    color: #333;
    margin: 0 0 8px 0;
    font-weight: 600;
}
.value-content-inline p {
    font-size: 0.85rem;
    color: #666;
    line-height: 1.5;
    margin: 0;
}
@media (max-width: 992px) {
    .intro-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-values-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 576px) {
    .about-values-grid {
        grid-template-columns: 1fr;
    }
    
    .intro-features {
        grid-template-columns: 1fr;
    }
}
.about-intro {
    padding: 100px 0;
    background: var(--bg-light);
}
.intro-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}
.intro-content {
    padding-right: 40px;
}
.intro-content h2 {
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: 24px;
    position: relative;
}
.intro-content h2::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), #0a3d62);
    border-radius: 2px;
}
.intro-lead {
    font-size: 1.2rem;
    color: var(--primary-color);
    font-weight: 600;
    margin: 30px 0 20px;
}
.intro-text {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 30px;
}
.intro-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}
.intro-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: var(--text-primary);
}
.intro-features li i {
    color: var(--primary-color);
}
.intro-image {
    position: relative;
}
.image-main {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 30px 60px rgba(0,0,0,0.15);
}
.image-main img {
    width: 100%;
    height: auto;
    display: block;
}
.image-decoration {
    position: absolute;
    width: 200px;
    height: 200px;
    border: 3px solid var(--primary-color);
    border-radius: 20px;
    z-index: -1;
}
.image-decoration.top-right {
    top: -30px;
    right: -30px;
}
.image-decoration.bottom-left {
    bottom: -30px;
    left: -30px;
}
.image-badge {
    position: absolute;
    bottom: 30px;
    right: -40px;
    background: var(--white-color);
    padding: 20px 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    text-align: center;
}
.badge-year {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
}
.badge-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.core-values {
    padding: 100px 0;
    background: var(--white-color);
}
.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}
.value-card {
    position: relative;
    background: var(--white-color);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0,0,0,0.06);
    transition: all 0.4s ease;
    overflow: hidden;
}
.value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), #0a3d62);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}
.value-card:hover::before {
    transform: scaleX(1);
}
.value-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.1);
}
.value-decoration {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 4rem;
    font-weight: 700;
    color: var(--bg-light);
    line-height: 1;
}
.value-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, var(--primary-color), #0a3d62);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: var(--white-color);
    transition: transform 0.4s ease;
}
.value-card:hover .value-icon {
    transform: rotateY(180deg);
}
.value-card h3 {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 12px;
}
.value-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 首页时间线样式已删除 */
.certificates-showcase {
    padding: 100px 0;
    background: var(--white-color);
}
.cert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}
.cert-card {
    position: relative;
    background: var(--white-color);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0,0,0,0.06);
    transition: all 0.4s ease;
    overflow: hidden;
}
.cert-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.12);
}
.cert-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, #f0f4f8, #e8ecf0);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    color: var(--primary-color);
    transition: all 0.4s ease;
}
.cert-card:hover .cert-icon {
    transform: rotateY(180deg);
    background: linear-gradient(135deg, var(--primary-color), #0a3d62);
    color: var(--white-color);
}
.cert-card h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 8px;
}
.cert-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-color), #0a3d62);
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="1.5" fill="rgba(255,255,255,0.1)"/></svg>');
    background-size: 25px 25px;
}
.cta-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white-color);
}
.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}
.cta-content p {
    font-size: 1.15rem;
    opacity: 0.9;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}
.cta-btns {
    display: flex;
    gap: 20px;
    justify-content: center;
}
@media (max-width: 1200px) {
    .stats-grid,
    .values-grid,
    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .intro-wrapper {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .intro-content {
        padding-right: 0;
        order: 2;
    }
    
    .intro-image {
        order: 1;
    }
}
@media (max-width: 768px) {
    .about-hero h1 {
        font-size: 2.5rem;
    }
    
    .stats-section {
        margin-top: -60px;
        padding: 60px 0;
    }
    
    .stat-card {
        padding: 30px 15px;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        width: 100%;
        padding: 0 0 40px 70px;
    }
    
    .timeline-item.left,
    .timeline-item.right {
        left: 0;
        text-align: left;
    }
    
    .timeline-item.left .timeline-dot,
    .timeline-item.right .timeline-dot {
        left: 8px;
        right: auto;
    }
    
    .values-grid,
    .cert-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-content h2 {
        font-size: 2rem;
    }
    
    .cta-btns {
        flex-direction: column;
        align-items: center;
    }
}
@media (max-width: 480px) {
    .about-hero h1 {
        font-size: 2rem;
    }
    
    .about-hero .hero-content p {
        font-size: 1rem;
    }
    
    .stats-grid,
    .values-grid,
    .cert-grid {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 992px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }
}
.contact-map-wrapper {
    background: var(--white-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.map-container {
    height: 450px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.amap-info-content {
    padding: 10px;
}
.map-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}
@media (max-width: 768px) {
    .map-container {
        height: 350px;
    }
}
.contact-info h3 {
    font-size: var(--font-size-xxl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}
.contact-info h3::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--secondary-color);
    margin: var(--spacing-md) auto 0;
    border-radius: var(--radius-full);
}
.contact-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xxl);
}
.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}
.contact-item:hover {
    background: var(--white-color);
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}
.contact-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
    border-radius: 50%;
    color: var(--white-color);
    font-size: 1.2rem;
}
.contact-text {
    flex: 1;
}
.contact-label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: var(--spacing-xs);
}
.contact-value {
    font-size: var(--font-size-base);
    color: var(--text-primary);
    font-weight: 500;
    line-height: 1.5;
}
.contact-form-section {
    margin-top: var(--spacing-xxxl);
}
.contact-form-section h2 {
    font-size: var(--font-size-xxl);
    font-weight: 700;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}
.contact-form-section h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--secondary-color);
    margin: var(--spacing-md) auto 0;
    border-radius: var(--radius-full);
}
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}
@media (max-width: 768px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
}
.form-group {
    display: flex;
    flex-direction: column;
}
.form-group.full-width {
    grid-column: span 2;
}
@media (max-width: 768px) {
    .form-group.full-width {
        grid-column: span 1;
    }
}
.form-group label {
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}
.form-group label .required {
    color: var(--secondary-color);
    margin-left: 2px;
}
.form-group textarea {
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
}
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(255, 102, 0, 0.1);
}
.form-group textarea {
    min-height: 150px;
    resize: vertical;
}
.form-submit {
    text-align: center;
    margin-top: var(--spacing-lg);
}
.certificate-list-section {
    padding: var(--spacing-xxxl) 0;
}
.certificate-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xxl);
}
@media (max-width: 992px) {
    .certificate-list-grid,
    .certificate-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 576px) {
    .certificate-list-grid,
    .certificate-grid {
        grid-template-columns: 1fr;
    }
}
.certificate-card-image {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
    background: var(--light-gray);
}
.certificate-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}
.certificate-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 51, 102, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}
.certificate-card-overlay span {
    color: var(--white-color);
    font-size: var(--font-size-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}
.certificate-card-info {
    padding: var(--spacing-lg);
    text-align: center;
}
.certificate-card-info h3 {
    font-size: var(--font-size-lg);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}
.certificate-card-info p {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}
.certificate-detail-section {
    padding: var(--spacing-xxxl) 0;
}
.certificate-detail-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: start;
}
@media (max-width: 992px) {
    .certificate-detail-wrapper {
        grid-template-columns: 1fr;
    }
}
.certificate-image-wrapper {
    position: sticky;
    top: 100px;
}
.certificate-main-image {
    background: var(--white-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}
.certificate-main-image img {
    width: 100%;
    height: auto;
    object-fit: contain;
}
.certificate-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}
.action-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: 1px solid var(--primary-color);
    background: var(--white-color);
    color: var(--primary-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: all var(--transition-fast);
}
.action-btn:hover {
    background: var(--primary-color);
    color: var(--white-color);
}
.certificate-detail-info {
    padding: var(--spacing-lg);
}
.detail-title {
    font-size: var(--font-size-xxxl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
}
.detail-meta {
    background: var(--light-gray);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-xl);
}
.meta-item {
    display: flex;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--gray-light);
}
.meta-item:last-child {
    border-bottom: none;
}
.meta-label {
    width: 100px;
    color: var(--text-muted);
    flex-shrink: 0;
}
.meta-value {
    color: var(--text-primary);
    font-weight: 500;
}
.detail-description {
    margin-bottom: var(--spacing-xl);
}
.detail-benefits h3 {
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--secondary-color);
    display: inline-block;
}
.detail-description p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}
.detail-benefits ul {
    list-style: none;
}
.detail-benefits li {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
    color: var(--text-secondary);
}
.detail-benefits li i {
    color: var(--secondary-color);
    font-size: var(--font-size-lg);
}
.detail-share {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--light-gray);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-xl);
}
.share-label {
    color: var(--text-muted);
    font-weight: 500;
}
.share-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}
.share-btn.wechat {
    background: #07C160;
    color: var(--white-color);
}
.share-btn.weibo {
    background: #E6162D;
    color: var(--white-color);
}
.share-btn.qq {
    background: #1296DB;
    color: var(--white-color);
}
.share-btn:hover {
    opacity: 0.85;
    transform: translateY(-2px);
}
.related-section {
    margin-top: var(--spacing-xxxl);
    padding-top: var(--spacing-xxxl);
      padding-bottom: var(--spacing-xxxl); 
    border-top: 1px solid var(--border-color);
    margin-bottom: 0px;
}
.related-section .section-title {
    font-size: var(--font-size-xxl);
    color: var(--primary-color);
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}
@media (max-width: 992px) {
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 576px) {
    .related-grid {
        grid-template-columns: 1fr;
    }
}
.related-card {
    background: var(--white-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
    text-decoration: none;
}
.related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.related-image {
    aspect-ratio: 4/3;
    overflow: hidden;
}
.related-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.related-card h4 {
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    text-align: center;
}
.image-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}
.modal-content {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
}
.modal-close {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 40px;
    color: var(--white-color);
    cursor: pointer;
}
.article-share-section {
    padding: 30px;
    background: #f8f9fa;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}
.article-share-section h4 {
    margin: 0;
    font-size: 1rem;
    color: #333;
    white-space: nowrap;
}
.share-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}
.share-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}
.share-btn:hover {
    transform: translateY(-3px);
}
.share-btn.wechat { background: #07c160; }
.share-btn.weibo { background: #e6162d; }
.share-btn.qq { background: #1296db; }
.share-btn.copy { background: #666; }
.article-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 40px;
}
.nav-item.prev { justify-content: flex-start; }
.nav-item.next { justify-content: flex-end; text-align: right; }
.nav-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), #0a3d62);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 14px;
    flex-shrink: 0;
}
.nav-content {
    flex: 1;
    min-width: 0;
}
.nav-label {
    font-size: 0.85rem;
    color: #888;
    margin-bottom: 5px;
}
.nav-title {
    font-size: 0.95rem;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
@media (max-width: 576px) {
    .article-navigation {
        grid-template-columns: 1fr;
    }
    
    .nav-item.next {
        justify-content: flex-start;
        text-align: left;
    }
}
.related-products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 960px;
    margin: 0 auto;
}
.related-product-card {
    background: var(--white-color);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
    transition: all 0.3s ease;
}
.related-product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 35px rgba(0,0,0,0.12);
}
.related-product-card .card-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}
.related-product-card .card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.related-product-card:hover .card-image img {
    transform: scale(1.08);
}
.related-product-card .card-content {
    padding: 20px;
    text-align: center;
}
.related-product-card .card-content h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
}
.related-product-card .card-content h3 a {
    color: var(--text-primary);
    transition: color 0.3s ease;
}
.related-product-card .card-content p {
    font-size: 0.9rem;
    color: #666;
    margin: 0;
}
@media (max-width: 992px) {
    .related-products-grid {
        grid-template-columns: repeat(2, 1fr);
        max-width: 600px;
    }
}
@media (max-width: 576px) {
    .related-products-grid {
        grid-template-columns: 1fr;
        max-width: 320px;
    }
}
.cert-hero {
    text-align: center;
    padding: 60px 20px 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    margin-bottom: 50px;
    border-radius: 20px;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.cert-hero-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff, #f0f0f0);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: #667eea;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}
.cert-hero-title {
    font-size: 2.5rem;
    color: #fff;
    margin-bottom: 10px;
    font-weight: 700;
}
.cert-hero-subtitle {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.9);
    letter-spacing: 3px;
}
.cert-main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
    margin-bottom: 50px;
    background: #fff;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
.cert-image-wrapper {
    position: sticky;
    top: 100px;
}
.cert-main-image {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: all 0.4s ease;
    min-height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed #ccc;
    position: relative;
}
.cert-main-image::before {
    content: '\f560';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 100px;
    color: rgba(102,126,234,0.2);
    display: none;
}
.cert-main-image.show-icon::before {
    display: block;
}
.cert-main-image:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}
.cert-main-image img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
    position: relative;
    z-index: 1;
}
.cert-meta-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}
.cert-meta-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 20px;
    background: #fff;
    border-radius: 12px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}
.cert-meta-item:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    box-shadow: 0 8px 25px rgba(102,126,234,0.3);
    transform: translateY(-3px);
}
.cert-meta-item:hover i {
    background: rgba(255,255,255,0.2);
    color: #fff;
}
.cert-meta-item:hover .meta-label {
    color: rgba(255,255,255,0.8);
}
.cert-meta-item:hover .meta-value {
    color: #fff;
}
.cert-meta-item i {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 16px;
    flex-shrink: 0;
}
.meta-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.meta-content .meta-label {
    font-size: 0.85rem;
    color: #999;
}
.meta-content .meta-value {
    font-size: 1rem;
    color: #333;
    font-weight: 600;
}
.cert-info {
    margin-top: 50px;
    padding: 40px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    border-left: 4px solid #667eea;
}
.cert-info-title {
    font-size: 1.5rem;
    color: #333;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #667eea;
    display: inline-block;
}
.cert-intro {
    margin-bottom: 30px;
}
.cert-intro p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 15px;
    font-size: 1rem;
}
.cert-intro p:last-child {
    margin-bottom: 0;
}
.hot-products-section {
    margin: 50px 0;
}
.hot-products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.hot-product-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    text-decoration: none;
}
.hot-product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}
.hot-product-image {
    position: relative;
    padding-top: 75%;
    overflow: hidden;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
}
.hot-product-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.hot-product-card:hover .hot-product-image img {
    transform: scale(1.08);
}
.hot-product-info {
    padding: 16px;
}
.hot-product-info h4 {
    font-size: 1rem;
    color: #333;
    margin-bottom: 6px;
    font-weight: 600;
}
.hot-product-desc {
    font-size: 0.85rem;
    color: #888;
    margin-bottom: 10px;
}
.hot-product-price {
    font-size: 1.1rem;
    color: #e74c3c;
    font-weight: 700;
}
.related-section {
    margin-top: 50px;
    padding-top: 50px;
    border-top: 1px solid #eee;
}
.related-section .section-title {
    font-size: 1.5rem;
    color: #333;
    margin-bottom: 30px;
    font-weight: 700;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.related-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    text-decoration: none;
}
.related-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}
.related-image {
    aspect-ratio: 4/3;
    overflow: hidden;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
}
.related-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.related-card:hover .related-image img {
    transform: scale(1.08);
}
.related-card h4 {
    padding: 16px;
    font-size: 0.95rem;
    color: #333;
    text-align: center;
    font-weight: 500;
}
.article-navigation {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    padding: 30px 0;
    border-top: 1px solid #eee;
    border-bottom: 1px solid #eee;
}
.article-navigation .nav-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 20px;
    background: #f8f9fa;
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s ease;
    flex: 1;
}
.article-navigation .nav-item:hover {
    background: #fff;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transform: translateY(-3px);
}
.article-navigation .nav-item.next {
    justify-content: flex-end;
}
.article-navigation .nav-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 14px;
}
.article-navigation .nav-label {
    font-size: 0.85rem;
    color: #999;
    margin-bottom: 4px;
}
.article-navigation .nav-title {
    font-size: 1rem;
    color: #333;
    font-weight: 500;
}
.image-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}
.modal-content {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
}
.modal-close {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 40px;
    color: #fff;
    cursor: pointer;
}
@media (max-width: 1024px) {
    .hot-products-grid,
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 992px) {
    .cert-main {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .cert-image-wrapper {
        position: relative;
        top: 0;
    }
    
    .cert-hero-title {
        font-size: 2rem;
    }
}
@media (max-width: 576px) {
    .cert-meta-grid {
        grid-template-columns: 1fr;
    }
    
    .hot-products-grid,
    .related-grid {
        grid-template-columns: 1fr;
    }
    
    .article-navigation {
        flex-direction: column;
    }
    
    .article-navigation .nav-item {
        width: 100%;
    }
    
    .article-navigation .nav-item.next {
        justify-content: flex-start;
    }
    
    .cert-hero {
        padding: 40px 20px 30px;
    }
    
    .cert-hero-title {
        font-size: 1.75rem;
    }
}
.submenu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    padding: 10px 0;
    list-style: none;
    margin: 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 1000;
}
.submenu li a {
    display: block;
    padding: 12px 20px;
    color: #666;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
    white-space: nowrap;
}
.submenu li a:hover {
    color: var(--secondary-color);
    background: rgba(255, 102, 0, 0.08);
    padding-left: 25px;
}
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9998;
    display: none;
}
.mobile-menu-overlay.active {
    display: block;
}
/* 移动端菜单容器基础样式 - 从右侧滑出 */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: #fff;
    z-index: 9999;
    transition: right 0.3s ease;
    overflow-y: auto;
    box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
}
.mobile-menu.active {
    right: 0;
}
@media (max-width: 992px) {
    .nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    /* 缂佸顕ф慨鈺冪博椤栨凹鍤ら柤鍓蹭簻閸亞鎮伴敓锟� */
    .mobile-nav-list {
        list-style: none;
        margin: 0;
        padding: 20px 0;
    }
    
    .mobile-nav-list > li > a {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 15px 25px;
        color: var(--primary-color);
        text-decoration: none;
        font-size: 15px;
        font-weight: 500;
        border-bottom: 1px solid #f0f0f0;
    }
    
    .mobile-nav-list > li > a:hover {
        color: var(--secondary-color);
    }
    
    /* 缂佸顕ф慨鈺冪博椤栨氨鎽嶉柤鎸庣矊瀹曪拷 */
    .mobile-submenu {
        display: none;
        background: #f8f9fa;
    }
    
    .mobile-submenu.active {
        display: block;
    }
    
    .mobile-submenu li a {
        display: block;
        padding: 12px 25px 12px 40px;
        color: #666;
        text-decoration: none;
        font-size: 14px;
        border-bottom: 1px solid #eee;
    }
    
    .mobile-submenu li a:hover {
        color: var(--secondary-color);
    }
}
.page-banner {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 80px 0 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.page-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></svg>');
    background-size: 50px 50px;
}
.banner-content {
    position: relative;
    z-index: 1;
}
.banner-title {
    font-size: 3rem;
    color: #fff;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: 5px;
}
.banner-subtitle {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.8);
    letter-spacing: 10px;
    margin-bottom: 20px;
}
.banner-desc {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.9);
}
.section-header .section-title {
    font-size: 2rem;
    color: #333;
    font-weight: 700;
    position: relative;
    display: inline-block;
    padding-bottom: 15px;
}
.section-header .section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 2px;
}
.section-header .section-subtitle {
    font-size: 1rem;
    color: #999;
    margin-top: 10px;
    letter-spacing: 5px;
}
.contact-cards-section {
    padding: 60px 0;
    background: #f8f9fa;
}
.contact-cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}
.contact-card {
    background: #fff;
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}
.contact-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(102,126,234,0.2);
}
.contact-card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.contact-card-icon i {
    font-size: 32px;
    color: #fff;
}
.contact-card-title {
    font-size: 1.2rem;
    color: #333;
    font-weight: 600;
    margin-bottom: 15px;
}
.contact-card-value {
    font-size: 1.4rem;
    color: #667eea;
    font-weight: 700;
    margin-bottom: 8px;
}
.contact-card-time {
    font-size: 0.9rem;
    color: #999;
}
.company-info-section {
    padding: 80px 0;
}
.company-info-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-bottom: 50px;
    align-items: center;
}
.company-image-wrapper {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0,0,0,0.1);
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
}
.company-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.company-image-wrapper .img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
    color: #667eea;
    opacity: 0.3;
}
.company-name {
    font-size: 1.8rem;
    color: #333;
    font-weight: 700;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #667eea;
}
.company-info-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.company-info-list li {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 15px 0;
    border-bottom: 1px solid #eee;
}
.company-info-list li:last-child {
    border-bottom: none;
}
.company-info-list li i {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 16px;
    flex-shrink: 0;
}
.company-info-list li span {
    font-size: 1rem;
    color: #666;
    line-height: 1.6;
    padding-top: 8px;
}
.map-wrapper {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}
.map-container {
    height: 400px;
    background: #f5f7fa;
    display: flex;
    align-items: center;
    justify-content: center;
}
.map-placeholder {
    text-align: center;
    color: #999;
}
.map-placeholder i {
    font-size: 80px;
    opacity: 0.3;
    margin-bottom: 20px;
}
.map-placeholder p {
    font-size: 1.1rem;
}
.faq-section {
    padding: 80px 0;
    background: #f8f9fa;
}
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}
.faq-item {
    background: #fff;
    border-radius: 16px;
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}
.faq-item:hover {
    box-shadow: 0 8px 30px rgba(102,126,234,0.15);
}
.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    cursor: pointer;
    font-size: 1.1rem;
    color: #333;
    font-weight: 500;
    transition: all 0.3s ease;
}
.faq-question:hover {
    color: #667eea;
}
.faq-question i {
    color: #667eea;
    transition: transform 0.3s ease;
}
.faq-item.active .faq-question i {
    transform: rotate(180deg);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}
.faq-item.active .faq-answer {
    max-height: 300px;
}
.faq-answer p {
    padding: 0 25px 20px;
    color: #666;
    line-height: 1.8;
    font-size: 0.95rem;
}
@media (max-width: 992px) {
    .contact-cards-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }
    
    .company-info-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .banner-title {
        font-size: 2.2rem;
    }
}
@media (max-width: 576px) {
    .page-banner {
        padding: 60px 0 40px;
    }
    
    .banner-title {
        font-size: 1.8rem;
        letter-spacing: 3px;
    }
    
    .banner-subtitle {
        font-size: 1rem;
        letter-spacing: 5px;
    }
    
    .contact-card {
        padding: 30px 20px;
    }
    
    .company-name {
        font-size: 1.4rem;
    }
    
    .company-info-list li {
        flex-direction: column;
        gap: 10px;
    }
    
    .map-container {
        height: 300px;
    }
}
.breadcrumb-wrapper {
    background: #fff;
    padding: 15px 0;
    border-bottom: 1px solid #eee;
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: #999;
}
.breadcrumb a {
    color: #666;
    text-decoration: none;
    transition: color 0.3s;
}
.breadcrumb a:hover {
    color: #667eea;
}
.breadcrumb li:not(:last-child)::after {
    content: '/';
    margin-left: 10px;
}
.breadcrumb .active {
    color: #667eea;
}
.case-detail-section {
    padding: 40px 0 80px;
    background: #f8f9fa;
}
.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 30px;
    padding: 30px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}
.project-title {
    font-size: 1.8rem;
    color: #333;
    font-weight: 700;
    line-height: 1.4;
}
.project-actions {
    display: flex;
    gap: 10px;
}
.action-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 18px;
    background: #f5f7fa;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    color: #666;
    cursor: pointer;
    transition: all 0.3s ease;
}
.action-btn:hover {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff;
}
.project-gallery {
    background: #fff;
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}
.gallery-main {
    position: relative;
    aspect-ratio: 16/9;
    border-radius: 12px;
    overflow: hidden;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
    margin-bottom: 15px;
}
.gallery-main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.gallery-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(255,255,255,0.9);
    border: none;
    border-radius: 50%;
    font-size: 18px;
    color: #333;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}
.gallery-nav:hover {
    background: #667eea;
    color: #fff;
}
.gallery-nav.prev {
    left: 20px;
}
.gallery-nav.next {
    right: 20px;
}
.gallery-thumbs {
    display: flex;
    gap: 10px;
}
.thumb {
    width: 100px;
    height: 70px;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    opacity: 0.6;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}
.thumb.active {
    opacity: 1;
    border-color: #667eea;
}
.thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.project-info-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}
.info-card {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}
.info-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(102,126,234,0.15);
}
.info-icon i {
    font-size: 20px;
    color: #fff;
    display: block;  /* 确保图标作为块元素 */
    text-align: center;
}
.info-label {
    font-size: 0.85rem;
    color: #999;
}
.info-value {
    font-size: 1rem;
    color: #333;
    font-weight: 600;
}
.project-section {
    background: #fff;
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}
.section-title i {
    color: #667eea;
}
.section-content p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 15px;
}
.section-content p:last-child {
    margin-bottom: 0;
}
.highlights-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}
.highlight-card {
    text-align: center;
    padding: 30px 20px;
    background: #f8f9fa;
    border-radius: 12px;
    transition: all 0.3s ease;
}
.highlight-card:hover {
    background: linear-gradient(135deg, #667eea, #764ba2);
    transform: translateY(-8px);
}
.highlight-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}
.highlight-icon i {
    font-size: 28px;
    color: #fff;
}
.highlight-card:hover .highlight-icon {
    background: rgba(255,255,255,0.2);
}
.highlight-card h4 {
    font-size: 1rem;
    color: #333;
    margin-bottom: 10px;
    transition: color 0.3s ease;
}
.highlight-card:hover p {
    color: #fff;
}
.highlight-card p {
    font-size: 0.9rem;
    color: #666;
    line-height: 1.5;
    transition: color 0.3s ease;
}
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.gallery-item {
    position: relative;
    aspect-ratio: 16/10;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
}
.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.gallery-item:hover img {
    transform: scale(1.1);
}
.gallery-item-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    color: #fff;
    font-size: 0.95rem;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}
.gallery-item:hover .gallery-item-overlay {
    transform: translateY(0);
}
.related-cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.related-case-card {
    text-decoration: none;
    transition: all 0.3s ease;
}
.related-case-card:hover {
    transform: translateY(-5px);
}
.related-case-image {
    aspect-ratio: 16/10;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 12px;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
}
.related-case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.related-case-card:hover .related-case-image img {
    transform: scale(1.08);
}
.related-case-card h4 {
    font-size: 0.95rem;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}
.related-case-card:hover h4 {
    color: #667eea;
}
.article-navigation {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    padding: 30px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}
.nav-item.next {
    text-align: right;
    align-items: flex-end;
}
.nav-label {
    font-size: 0.85rem;
    color: #999;
}
.nav-title {
    font-size: 1rem;
    color: #333;
    font-weight: 500;
}
@media (max-width: 992px) {
    .project-info-grid,
    .highlights-grid,
    .related-cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 768px) {
    .project-header {
        flex-direction: column;
        gap: 20px;
    }
    
    .project-title {
        font-size: 1.4rem;
    }
    
    .article-navigation {
        flex-direction: column;
    }
    
    .nav-item.next {
        text-align: left;
        align-items: flex-start;
    }
}
@media (max-width: 576px) {
    .project-info-grid,
    .highlights-grid,
    .related-cases-grid,
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-thumbs {
        overflow-x: auto;
    }
}
.page-banner {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 80px 0 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.page-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></svg>');
    background-size: 50px 50px;
}
.banner-content {
    position: relative;
    z-index: 1;
}
.banner-title {
    font-size: 3rem;
    color: #fff;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: 5px;
}
.banner-subtitle {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.8);
    letter-spacing: 10px;
    margin-bottom: 20px;
}
.banner-desc {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.9);
}
.case-list-section {
    padding: 60px 0 80px;
    background: #f8f9fa;
}
.case-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 40px;
}
.case-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}
.sidebar-widget {
    background: #fff;
    border-radius: 16px;
    padding: 25px;
    margin-bottom: 20px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}
.sidebar-title {
    font-size: 1.1rem;
    color: #333;
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #667eea;
    display: flex;
    align-items: center;
    gap: 10px;
}
.sidebar-title i {
    color: #667eea;
}
.product-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.product-item {
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}
.product-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}
.product-item a {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    text-decoration: none;
    transition: all 0.3s ease;
}
.product-item a:hover {
    transform: translateX(5px);
}
.case-sidebar .product-image {
    width: 90px;
    height: 70px;
    border-radius: 8px;
    overflow: hidden;
    flex-shrink: 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}
.case-sidebar .product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}
.case-sidebar .product-item:hover .product-image img {
    transform: scale(1.1);
}
.case-sidebar .product-info {
    padding: 0;
    flex: 1;
    min-width: 0;
}
.case-sidebar .product-info h4 {
    font-size: 0.9rem;
    color: #333;
    font-weight: 500;
    margin: 0 0 8px 0;
    line-height: 1.4;
}
.product-price {
    font-size: 1rem;
    color: #e74c3c;
    font-weight: 700;
}
.contact-widget {
    text-align: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
}
.contact-widget .sidebar-title {
    color: #fff;
    border-bottom-color: rgba(255,255,255,0.3);
}
.contact-widget .sidebar-title i {
    color: #fff;
}
.contact-widget p {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: 15px;
}
.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: #fff;
    color: #667eea;
    border-radius: 25px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}
.contact-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
}
.filter-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
    padding: 20px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}
.filter-btn {
    padding: 10px 20px;
    background: #f5f7fa;
    border: none;
    border-radius: 25px;
    font-size: 0.95rem;
    color: #666;
    cursor: pointer;
    transition: all 0.3s ease;
}
.filter-btn:hover {
    background: #e9ecef;
}
.filter-btn.active {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff;
}
.case-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}
.case-card-link {
    text-decoration: none;
    display: block;
}
.case-card-image {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
}
.case-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.case-category {
    position: absolute;
    top: 15px;
    left: 15px;
    padding: 6px 14px;
    background: rgba(102,126,234,0.9);
    color: #fff;
    border-radius: 20px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 6px;
}
.case-card-content {
    padding: 20px;
}
.case-title {
    font-size: 1.1rem;
    color: #333;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.4;
    transition: color 0.3s ease;
}
.case-desc {
    font-size: 0.9rem;
    color: #888;
    line-height: 1.6;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.case-meta {
    display: flex;
    gap: 20px;
    font-size: 0.85rem;
    color: #999;
}
.case-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 40px;
}
.page-btn {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    border-radius: 10px;
    color: #666;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.page-btn:hover {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff;
    transform: translateY(-3px);
}
.page-btn.active {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff;
}
.img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    color: #667eea;
    opacity: 0.4;
}
@media (max-width: 992px) {
    .case-layout {
        grid-template-columns: 1fr;
    }
    
    .case-sidebar {
        position: relative;
        top: 0;
    }
    
    .product-list {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 15px;
    }
    
    .product-item {
        border-bottom: none;
        margin-bottom: 0;
        padding-bottom: 0;
    }
}
@media (max-width: 768px) {
    .product-list {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .case-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-tabs {
        justify-content: center;
    }
    
    .banner-title {
        font-size: 2rem;
    }
}
@media (max-width: 576px) {
    .banner-title {
        font-size: 1.6rem;
        letter-spacing: 3px;
    }
    
    .banner-subtitle {
        font-size: 0.9rem;
        letter-spacing: 5px;
    }
}
.nav-item.prev { justify-content: flex-start; }
.nav-item.next { justify-content: flex-end; }
.nav-item.next .nav-content {
    text-align: right;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}
.breadcrumb-wrapper {
    background: #fff;
    padding: 15px 0;
    border-bottom: 1px solid #eee;
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: #999;
}
.breadcrumb a {
    color: #666;
    text-decoration: none;
    transition: color 0.3s;
}
.breadcrumb a:hover {
    color: #667eea;
}
.breadcrumb li:not(:last-child)::after {
    content: '/';
    margin-left: 10px;
}
.breadcrumb .active {
    color: #667eea;
}
.product-detail-section {
    padding: 40px 0 80px;
    background: #f8f9fa;
}
.product-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 30px;
    padding: 30px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}
.product-title {
    font-size: 1.8rem;
    color: #333;
    font-weight: 700;
    line-height: 1.4;
}
.phone-btn {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: #fff;
    padding: 14px 28px;
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: 30px;
    animation: phone-pulse 2s infinite;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
    text-decoration: none;
    border: none;
}
.phone-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 25px rgba(231, 76, 60, 0.5);
    animation: none;
    background: linear-gradient(135deg, #c0392b, #a93226);
}
.phone-btn i {
    margin-right: 8px;
    animation: ring 1s ease-in-out infinite;
}
/* 确保phone-btn在action-btn容器中正确显示 */
.project-actions .action-btn.phone-btn,
.product-actions .action-btn.phone-btn {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: #fff;
    padding: 14px 28px;
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: 30px;
    border: none;
    animation: phone-pulse 2s infinite;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
}
.project-actions .action-btn.phone-btn:hover,
.product-actions .action-btn.phone-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 25px rgba(231, 76, 60, 0.5);
    animation: none;
    background: linear-gradient(135deg, #c0392b, #a93226);
}
@keyframes phone-pulse {
    0%, 100% { box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3); }
    50% { box-shadow: 0 4px 25px rgba(231, 76, 60, 0.6); }
}
@keyframes ring {
    0%, 100% { transform: rotate(0); }
    10%, 30% { transform: rotate(-10deg); }
    20%, 40% { transform: rotate(10deg); }
    50% { transform: rotate(0); }
}
.action-btn:hover {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff;
}
.product-gallery-simple {
    max-width: 800px;
    margin: 0 auto 30px;
}
.gallery-main-simple {
    aspect-ratio: 4/3;
    border-radius: 16px;
    overflow: hidden;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
}
.gallery-main-simple img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.product-info-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}
.info-card {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}
.info-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(102,126,234,0.15);
}
.info-icon i {
    font-size: 20px;
    color: #fff;
}
.info-label {
    font-size: 0.85rem;
    color: #999;
}
.info-value {
    font-size: 1rem;
    color: #333;
    font-weight: 600;
}
.product-section {
    background: #fff;
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}
.section-title i {
    color: #667eea;
}
.params-table {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}
.param-row {
    display: flex;
    padding: 12px 15px;
    background: #f8f9fa;
    border-radius: 8px;
}
.param-label {
    width: 120px;
    color: #999;
    font-size: 0.9rem;
    flex-shrink: 0;
}
.param-value {
    color: #333;
    font-size: 0.9rem;
    font-weight: 500;
}
.section-content p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 15px;
}
.section-content p:last-child {
    margin-bottom: 0;
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.feature-card {
    text-align: center;
    padding: 30px 20px;
    background: #f8f9fa;
    border-radius: 12px;
    transition: all 0.3s ease;
}
.feature-card:hover {
    background: linear-gradient(135deg, #667eea, #764ba2);
    transform: translateY(-8px);
}
.feature-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}
.feature-icon i {
    font-size: 28px;
    color: #fff;
}
.feature-card:hover .feature-icon {
    background: rgba(255,255,255,0.2);
}
.feature-card h4 {
    font-size: 1rem;
    color: #333;
    margin-bottom: 8px;
    transition: color 0.3s ease;
}
.feature-card:hover p {
    color: #fff;
}
.feature-card p {
    font-size: 0.9rem;
    color: #666;
    line-height: 1.5;
    transition: color 0.3s ease;
}
.application-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 15px;
}
.app-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px 10px;
    background: #f8f9fa;
    border-radius: 12px;
    transition: all 0.3s ease;
}
.app-item:hover {
    background: linear-gradient(135deg, #667eea, #764ba2);
    transform: translateY(-5px);
}
.app-item i {
    font-size: 28px;
    color: #667eea;
    transition: color 0.3s ease;
}
.app-item:hover i {
    color: #fff;
}
.app-item span {
    font-size: 0.85rem;
    color: #666;
    transition: color 0.3s ease;
}
.app-item:hover span {
    color: #fff;
}
.related-products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.related-product-card {
    text-decoration: none;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 12px;
    transition: all 0.3s ease;
}
.related-product-card:hover {
    background: #fff;
    box-shadow: 0 10px 30px rgba(102,126,234,0.15);
    transform: translateY(-5px);
}
.related-product-image {
    aspect-ratio: 4/3;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 12px;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
}
.related-product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.related-product-card:hover .related-product-image img {
    transform: scale(1.08);
}
.related-product-card h4 {
    font-size: 0.95rem;
    color: #333;
    font-weight: 500;
    margin-bottom: 8px;
    transition: color 0.3s ease;
}
.related-product-card:hover h4 {
    color: #667eea;
}
.product-price {
    font-size: 1rem;
    color: #e74c3c;
    font-weight: 700;
}
.article-navigation {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    padding: 30px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}
.nav-item.prev { justify-content: flex-start; }
.nav-item.next { justify-content: flex-end; }
.nav-item.next .nav-text {
    text-align: right;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}
.nav-label {
    font-size: 0.85rem;
    color: #999;
}
.nav-title {
    font-size: 1rem;
    color: #333;
    font-weight: 500;
}
.nav-icon {
    font-size: 24px;
    color: #ddd;
}
@media (max-width: 992px) {
    .product-info-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid,
    .related-products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .application-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}
@media (max-width: 768px) {
    .product-header {
        flex-direction: column;
        gap: 20px;
    }
    
    .product-title {
        font-size: 1.4rem;
    }
    
    .params-table {
        grid-template-columns: 1fr;
    }
    
    .article-navigation {
        flex-direction: column;
    }
    
    .nav-item.next {
        text-align: left;
    }
    
    .nav-item.next .nav-text {
        align-items: flex-start;
        text-align: left;
    }
}
@media (max-width: 576px) {
    .product-info-grid,
    .features-grid,
    .related-products-grid,
    .application-grid {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 576px) {
    .header .logo img {
        max-width: 100px;
    }
    
    .header .logo {
        max-width: 100px;
    }
}
@media (max-width: 992px) {
    .language-switcher {
        display: none !important;
    }
}
/* ==========================================
   导航下拉菜单功能补充
   ========================================== */

.nav-list > li.has-submenu {
    position: relative;
}

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

.nav-list > li.has-submenu:hover .nav-link i,
.nav-item.has-submenu:hover .nav-link i {
    transform: rotate(180deg);
}

.submenu li {
    position: relative;
}

.submenu li.has-submenu .submenu {
    top: 0;
    left: 100%;
    margin-left: 0;
}

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

/* 已移除重复的伪元素箭头，使用HTML中的Font Awesome图标 */
.has-submenu > a .fa-chevron-down {
    margin-left: 6px;
    transition: transform 0.3s ease;
    font-size: 12px;
}

.has-submenu.open > a .fa-chevron-down {
    transform: rotate(180deg);
}

/* ==========================================
   产品列表页样式修复
   ========================================== */

.breadcrumb-wrapper {
    background: linear-gradient(to right, #f8f9fa, #e9ecef);
    padding: 12px 0;
    border-bottom: 1px solid #dee2e6;
}

.breadcrumb {
    font-size: 14px;
}

.breadcrumb a {
    color: #495057;
    transition: color 0.3s;
}

.breadcrumb i {
    margin: 0 8px;
    font-size: 10px;
    color: #adb5bd;
}

.products-section {
    padding: 60px 0;
    background: #f8f9fa;
}

.products-main {
    flex: 1;
    min-width: 0;
}

.products-grid .product-card {
    display: flex;
    flex-direction: column;
}

.products-grid .product-image {
    height: 220px;
}

.products-grid .product-info {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.products-grid .product-info h3 {
    font-size: 16px;
    margin-bottom: 10px;
    line-height: 1.4;
}

.products-grid .product-model,
.products-grid .product-material {
    font-size: 13px;
    color: #6c757d;
    margin-bottom: 5px;
}

/* ==========================================
   关于我们页面 - 垂直时间线样式
   ========================================== */

.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--primary-color), #0a3d62);
    transform: translateX(-50%);
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    width: 50%;
    padding: 0 50px 60px;
}

.timeline-item.left {
    left: 0;
    text-align: right;
}

.timeline-item.right {
    left: 50%;
    text-align: left;
}

.timeline-dot {
    position: absolute;
    width: 16px;
    height: 16px;
    background: var(--secondary-color);
    border-radius: 50%;
    top: 0;
    border: 4px solid #fff;
    box-shadow: 0 0 0 4px var(--primary-color);
    z-index: 1;
}

.timeline-item.left .timeline-dot {
    right: -8px;
}

.timeline-item.right .timeline-dot {
    left: -8px;
}

.timeline-year {
    display: inline-block;
    background: var(--primary-color);
    color: #fff;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 12px;
}

.timeline-content {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    transition: transform 0.3s, box-shadow 0.3s;
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.timeline-content h4 {
    color: var(--primary-color);
    font-size: 18px;
    margin-bottom: 8px;
}

.timeline-content p {
    color: #666;
    font-size: 14px;
    line-height: 1.6;
}

.timeline-line {
    display: none;
}

@media (max-width: 768px) {
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        width: 100%;
        left: 0 !important;
        padding-left: 50px;
        padding-right: 0;
        text-align: left !important;
    }
    
    .timeline-item .timeline-dot {
        left: 12px !important;
        right: auto !important;
    }
}

/* ==========================================
   产品列表页补充样式
   ========================================== */

.product-model,
.product-material {
    font-size: 0.9rem;
    color: var(--gray-color);
    margin-bottom: var(--spacing-xs);
}

/* ==========================================
   证书标题样式
   ========================================== */

.certificate-title {
    font-size: 1.2rem;
    color: #fff;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

/* ==========================================
   移动端头部样式修复
   ========================================== */

@media (max-width: 768px) {
    /* Header容器 */
    .header {
        padding: 8px 0;
    }
    
    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 8px 0;
    }
    
    /* Logo在移动端 */
    .logo {
        display: flex;
        align-items: center;
    }
    
    .logo a {
        display: flex;
        align-items: center;
        gap: 8px;
    }
    
    .logo-img {
        height: 40px !important;
        width: auto !important;
    }
    
    .logo span {
        font-size: 14px;
        white-space: nowrap;
    }
    
    /* 桌面端导航在移动端隐藏 */
    .nav {
        display: none !important;
    }
    
    /* 语言切换在移动端隐藏 */
    .language-switcher {
        display: none !important;
    }
    
    /* 汉堡菜单按钮 */
    .mobile-menu-toggle {
        display: flex;
        flex-direction: column;
        gap: 5px;
        padding: 5px;
        background: none;
        border: none;
        cursor: pointer;
    }
    
    .mobile-menu-toggle span {
        display: block;
        width: 24px;
        height: 2px;
        background: var(--primary-color);
        transition: all 0.3s ease;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    /* 遮罩层 */
    .mobile-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0,0,0,0.5);
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    
    .mobile-overlay.active {
        opacity: 1;
        visibility: visible;
    }
    
    /* Hero Section在移动端 - 需要足够空间容纳fixed header */
    .hero-section {
        padding-top: 100px;
    }
}

@media (max-width: 480px) {
    /* 保持logo文字显示，但字号更小 */
    .logo span {
        font-size: 12px;
        display: block;
    }
    
    .logo-img {
        height: 35px !important;
    }
    
    .hero-section {
        padding-top: 90px;
    }
}

/* ========================================
   新闻详情页样式 - 与产品详情页风格统一
   ======================================== */

/* 文章头部区域 */
.article-header-section {
    background: #fff;
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 20px;
}

.article-title-area {
    flex: 1;
}

.article-main-title {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 15px 0;
    line-height: 1.4;
}

.article-meta-line {
    display: flex;
    gap: 20px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.article-meta-line span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.article-meta-line i {
    color: var(--primary-color);
}

/* 文章特色图片 */
.article-featured-image {
    background: #fff;
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.article-featured-image img {
    width: 100%;
    border-radius: 12px;
    aspect-ratio: 16/9;
    object-fit: cover;
}

/* 文章信息卡片网格 */
.article-info-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

/* 统一两种类名样式 */
.article-info-card,
.info-item {
    background: #fff;
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.article-info-card:hover,
.info-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.article-info-icon,
.info-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: auto 15px;
    color: #fff;
    font-size: 1.2rem;
}

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

.article-info-label,
.info-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 5px;
}

.article-info-value,
.info-value {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* 文章内容区 */
.article-body-section {
    background: #fff;
    border-radius: 16px;
    padding: 40px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.article-body-section h2,
.article-body-section h3 {
    color: var(--text-primary);
    margin: 30px 0 15px 0;
}

.article-body-section p {
    margin-bottom: 20px;
    line-height: 1.8;
    color: var(--text-primary);
}

/* 标签与分享区 */
.article-tags-share {
    background: #fff;
    border-radius: 16px;
    padding: 25px 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.article-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.article-tag {
    background: var(--bg-light);
    color: var(--primary-color);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

.article-tag:hover {
    background: var(--primary-color);
    color: #fff;
}

.article-share {
    display: flex;
    align-items: center;
    gap: 15px;
}

.share-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.share-buttons {
    display: flex;
    gap: 10px;
}

.share-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.9rem;
    transition: transform 0.3s ease;
}

.share-btn:hover {
    transform: scale(1.1);
}

.share-btn.wechat { background: #07C160; }
.share-btn.weibo { background: #E6162D; }
.share-btn.copy { background: var(--primary-color); }

/* 相关产品区 */
.related-products-section {
    background: #fff;
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.section-header-title {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 25px;
}

.section-header-title i {
    font-size: 1.5rem;
    color: var(--text-primary);
}

.section-header-title h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.section-header-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, var(--primary-color), transparent);
    margin-left: 15px;
}

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

.related-product-card {
    background: var(--bg-light);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.related-product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.related-product-image {
    aspect-ratio: 4/3;
    overflow: hidden;
}

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

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

.related-product-info {
    padding: 15px;
}

.related-product-name {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin: 0 0 10px 0;
}

.related-product-link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: var(--danger-color);
    font-size: 0.9rem;
    text-decoration: none;
    transition: gap 0.3s ease;
}

.related-product-link:hover {
    gap: 10px;
}

/* 新闻详情页响应式 */
@media (max-width: 992px) {
    .article-info-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .related-products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .article-header-section {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .article-main-title {
        font-size: 1.4rem;
    }
    
    .article-meta-line {
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .article-body-section {
        padding: 25px;
    }
    
    .article-tags-share {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .related-products-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .article-info-grid {
        grid-template-columns: 1fr;
    }
    
    .article-header-section {
        padding: 20px;
    }
    
    .article-featured-image {
        padding: 15px;
    }
}

/* ========== 新闻详情页新增样式 ========== */

/* 文章标题区域 */
.article-header-new {
    background: #fff;
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 20px;
}

.article-title-new {
    font-size: 1.8rem;
    font-weight: 600;
    color: #1a1a2e;
    margin: 0 0 15px 0;
    line-height: 1.4;
}

.article-meta-new {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 0.9rem;
    color: #666;
}

.article-meta-new span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.article-meta-new i {
    color: #667eea;
}

/* 文章正文区域 */
.article-content-new {
    background: #fff;
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    line-height: 1.8;
}

.article-content-new p {
    margin-bottom: 1.5em;
}

.article-content-new img {
    max-width: 100%;
    border-radius: 8px;
    margin: 20px 0;
}

/* 信息项样式 */
.info-item {
    text-align: center;
    padding: 15px;
}

.info-label {
    display: block;
    font-size: 0.8rem;
    color: #999;
    margin-bottom: 5px;
}

.info-value {
    font-size: 0.95rem;
    color: #333;
    font-weight: 500;
}

/* 响应式 */
@media (max-width: 768px) {
    .article-header-new {
        flex-direction: column;
        padding: 20px;
    }
    
    .article-title-new {
        font-size: 1.4rem;
    }
    
    .article-meta-new {
        gap: 15px;
    }
    
    .article-content-new {
        padding: 20px;
    }
}

/* ==========================================
   全站响应式优化
   ========================================== */

/* 平板端 (992px - 1200px) */
@media (max-width: 1200px) {
    .container {
        max-width: 95%;
        padding: 0 15px;
    }
}

/* 平板端 (768px - 992px) */
@media (max-width: 992px) {
    /* 通用布局调整 */
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    /* 首页Hero区域 */
    .hero-section {
        min-height: 500px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    /* 首页About区域 */
    .about-section .about-layout {
        gap: 40px;
    }
    
    /* 列表页侧边栏 */
    .case-sidebar {
        display: none;
    }
    
    .products-layout {
        grid-template-columns: 1fr;
    }
    
    /* 面包屑 */
    .breadcrumb-wrapper {
        padding: 12px 0;
    }
    
    .breadcrumb {
        font-size: 0.85rem;
    }
}

/* 移动端 (576px - 768px) */
@media (max-width: 768px) {
    /* 通用 */
    .section {
        padding: 40px 0;
    }
    
    .section-header {
        margin-bottom: 30px;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .section-description {
        font-size: 0.95rem;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }
    
    /* 首页Hero区域 */
    .hero-section {
        min-height: 400px;
        padding-top: 80px;
    }
    
    .hero-content {
        padding: 40px 0;
    }
    
    .hero-title {
        font-size: 2rem;
        line-height: 1.3;
    }
    
    .hero-title-line {
        display: block;
        font-size: inherit;
    }
    
    .hero-description {
        font-size: 1rem;
        margin-bottom: 25px;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }
    
    .hero-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 15px;
        margin-top: 30px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .stat-label {
        font-size: 0.85rem;
    }
    
    /* 首页产品区域 */
    .products-section .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .product-card {
        min-height: auto;
    }
    
    .product-image {
        height: 180px;
    }
    
    /* 首页解决方案区域 */
    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .solution-item {
        height: 200px;
    }
    
    /* 首页证书区域 */
    .certificates-slider {
        gap: 15px;
    }
    
    .certificate-item {
        flex: 0 0 calc(50% - 10px);
    }
    
    /* 首页案例区域 */
    .cases-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .case-image {
        height: 200px;
    }
    
    /* 首页关于区域 */
    .about-section .about-top {
        flex-direction: column;
        gap: 30px;
    }
    
    .about-section .about-left,
    .about-section .about-right {
        width: 100%;
    }
    
    .about-section .about-features {
        flex-direction: column;
        gap: 20px;
    }
    
    .about-feature {
        flex-direction: row;
        align-items: center;
        text-align: left;
    }
    
    .video-wrapper {
        height: 250px;
    }
    
    /* 首页新闻区域 */
    .news-articles-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .news-section,
    .articles-section {
        padding: 25px;
    }
    
    .news-item {
        flex-direction: column;
        gap: 15px;
    }
    
    .news-date {
        flex-direction: row;
        gap: 8px;
        padding: 8px 15px;
    }
    
    /* 首页联系区域 */
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    /* 页面横幅 */
    .page-banner {
        padding: 60px 0 40px;
        min-height: 200px;
    }
    
    .page-banner h1 {
        font-size: 1.8rem;
    }
    
    .page-banner p {
        font-size: 1rem;
    }
    
    .banner-title {
        font-size: 1.8rem;
    }
    
    .banner-subtitle {
        font-size: 0.9rem;
    }
    
    /* 列表页 */
    .products-section {
        padding: 30px 0;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    /* 分页 */
    .pagination {
        gap: 5px;
    }
    
    .pagination > li > span {
        padding: 8px 12px;
        font-size: 0.85rem;
    }
    
    /* 底部 */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}

/* 小屏手机端 (< 576px) */
@media (max-width: 576px) {
    /* 通用 */
    .container {
        padding: 0 10px;
    }
    
    .section {
        padding: 30px 0;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .section-description {
        font-size: 0.9rem;
    }
    
    /* Hero区域 */
    .hero-section {
        min-height: 350px;
        padding-top: 70px;
    }
    
    .hero-title {
        font-size: 1.6rem;
    }
    
    .hero-description {
        font-size: 0.9rem;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .stat-item {
        padding: 15px;
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
    
    /* 产品网格 */
    .products-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .product-image {
        height: 200px;
    }
    
    /* 解决方案网格 */
    .solutions-grid {
        grid-template-columns: 1fr;
    }
    
    .solution-item {
        height: 180px;
    }
    
    /* 证书 */
    .certificate-item {
        flex: 0 0 100%;
    }
    
    /* 案例卡片 */
    .case-card {
        margin-bottom: 15px;
    }
    
    .case-image {
        height: 180px;
    }
    
    /* 页面横幅 */
    .page-banner {
        padding: 75px 0 30px;
    }
    
    .page-banner h1 {
        font-size: 1.5rem;
    }
    
    /* 详情页 */
    .product-detail-section {
        padding: 20px 0;
    }
    
    .product-header {
        flex-direction: column;
        gap: 15px;
        padding: 20px;
    }
    
    .product-title {
        font-size: 1.3rem;
    }
    
    .product-gallery-simple {
        margin-bottom: 20px;
    }
    
    .gallery-main-simple img {
        height: 250px;
    }
    
    .product-info-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .info-card {
        padding: 12px;
    }
    
    /* 文章内容 */
    .article-content,
    .article-content-new {
        padding: 15px;
    }
    
    .article-header,
    .article-header-new {
        padding: 15px;
    }
    
    .article-title,
    .article-title-new {
        font-size: 1.3rem;
    }
    
    /* 参数表格 */
    .params-table {
        grid-template-columns: 1fr;
    }
    
    /* 相关产品 */
    .related-products-grid {
        grid-template-columns: 1fr;
    }
    
    /* 文章导航 */
    .article-navigation {
        flex-direction: column;
        gap: 10px;
    }
    
    .nav-item {
        padding: 15px;
    }
    
    /* 按钮 */
    .btn {
        padding: 10px 20px;
        font-size: 0.85rem;
    }
    
    .action-btn {
        padding: 10px 15px;
        font-size: 0.85rem;
    }
    
    /* 信息网格 */
    .info-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    /* 标签区域 */
    .tags-share {
        flex-direction: column;
        gap: 15px;
    }
    
    .tags-list {
        flex-wrap: wrap;
    }
}

/* 超小屏 (< 400px) */
@media (max-width: 400px) {
    .hero-title {
        font-size: 1.4rem;
    }
    
    .section-title {
        font-size: 1.3rem;
    }
    
    .page-banner h1 {
        font-size: 1.3rem;
    }
    
    .product-title,
    .article-title {
        font-size: 1.1rem;
    }
}