/* 全局样式 */
:root {
    /* 颜色变量 */
    --primary-color: #007bff;
    --primary-hover: #0056b3;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --white: #ffffff;
    
    /* 间距变量 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* 字体大小变量 */
    --font-xs: 0.75rem;
    --font-sm: 0.875rem;
    --font-base: 1rem;
    --font-lg: 1.125rem;
    --font-xl: 1.25rem;
    --font-2xl: 1.5rem;
    --font-3xl: 1.875rem;
    --font-4xl: 2.25rem;
    
    /* 圆角变量 */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
    
    /* 阴影变量 */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: #333;
    background: var(--white);
    overflow-x: hidden;
    font-size: var(--font-base);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 超大屏幕适配 */
@media (min-width: 2560px) {
    .container {
        max-width: 2400px;
        padding: 0 60px;
    }
}

@media (min-width: 3840px) {
    .container {
        max-width: 3600px;
        padding: 0 80px;
    }
}

/* 企业级导航栏 */
.navbar {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 252, 0.95) 100%);
    backdrop-filter: blur(20px);
    box-shadow: 0 4px 32px rgba(0, 0, 0, 0.08), 0 1px 0 rgba(255, 255, 255, 0.5) inset;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid rgba(16, 61, 255, 0.1);
    position: relative;
}


.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
}

/* 超大屏幕导航栏优化 */
@media (min-width: 2560px) {
    .nav-container {
        max-width: 2400px;
        padding: 1.8rem 3rem;
    }
    
    .nav-menu {
        gap: 3.5rem;
    }
    
    .nav-link {
        font-size: 1.1rem;
        padding: 0.8rem 1.8rem;
    }
}

@media (min-width: 3840px) {
    .nav-container {
        max-width: 3600px;
        padding: 2.2rem 4rem;
    }
    
    .nav-menu {
        gap: 4.5rem;
    }
    
    .nav-link {
        font-size: 1.2rem;
        padding: 1rem 2.2rem;
    }
}

.nav-logo h2 {
    color: #1a1a2e;
    font-weight: 700;
    font-size: 1.4rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: relative;
}

.nav-logo h2::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, #007bff, #00d4ff);
    border-radius: 1px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.5rem;
    margin: 0;
    padding: 0;
    align-items: center;
}

.nav-item {
    position: relative;
}

.nav-link {
    color: #2d3748;
    text-decoration: none;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    font-size: 0.95rem;
    letter-spacing: 0.025em;
    background: transparent;
    border: 1px solid transparent;
}

.nav-link:hover {
    color: #007bff;
}

.nav-link.active {
    color: #ffffff;
    background: #007bff;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 252, 0.95) 100%);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 123, 255, 0.2);
    border-radius: 12px;
    padding: 0.5rem 0;
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-15px) scale(0.95);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1), 0 1px 0 rgba(255, 255, 255, 0.5) inset;
    z-index: 1001;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.dropdown-menu li {
    list-style: none;
    margin: 0;
}

.dropdown-menu a {
    color: #2d3748;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    display: block;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 0.9rem;
    position: relative;
    border-radius: 8px;
    margin: 0 0.5rem;
}

.dropdown-menu a:hover {
    background: rgba(0, 123, 255, 0.1);
    color: #007bff;
}

.dropdown-menu a.active {
    background: #007bff;
    color: white;
    font-weight: 600;
}

.dropdown-menu a.active:hover {
    background: #0056b3;
    color: white;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.hamburger:hover {
    background: rgba(0, 123, 255, 0.1);
}

.bar {
    width: 28px;
    height: 3px;
    background: linear-gradient(90deg, #007bff, #00d4ff);
    margin: 3px 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 2px;
}

.hamburger:hover .bar {
    background: linear-gradient(90deg, #0056b3, #007bff);
}

/* 英雄区域 */
.hero {
    height: 100vh;
    background: linear-gradient(135deg, rgb(16, 61, 255) 0%, rgb(74, 144, 226) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::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 1000 1000"><defs><pattern id="grid" width="50" height="50" patternUnits="userSpaceOnUse"><path d="M 50 0 L 0 0 0 50" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    background-size: 50px 50px;
}

.hero-content {
    z-index: 2;
    max-width: 800px;
    padding: 0 2rem;
    position: relative;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8), 0 0 20px rgba(255, 255, 255, 0.3);
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from { text-shadow: 0 0 20px rgba(255, 255, 255, 0.3); }
    to { text-shadow: 0 0 30px rgba(255, 255, 255, 0.5), 0 0 40px rgba(255, 255, 255, 0.2); }
}

.hero-subtitle {
    font-size: 1.5rem;
    color: #ffffff;
    margin-bottom: 2rem;
    line-height: 1.6;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
    font-weight: 500;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 600;
    font-size: var(--font-base);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--white);
    color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(16, 61, 255, 0.3);
    color: #ffffff;
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

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

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-sm);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* 通用区块样式 */
section {
    padding: var(--spacing-xxl) 0;
}

/* 触摸优化 */
@media (hover: none) and (pointer: coarse) {
    .btn:hover {
        transform: none;
    }
    
    .btn:active {
        transform: scale(0.98);
    }
    
    .nav-link:hover {
        background: none;
    }
    
    .nav-link:active {
        background: var(--light-color);
    }
    
    .product-item:hover {
        transform: none;
    }
    
    .product-item:active {
        transform: scale(0.98);
    }
}

/* 触摸设备优化 */
@media (max-width: 768px) {
    .btn {
        min-height: 44px; /* iOS 推荐的最小触摸目标 */
        min-width: 44px;
    }
    
    .nav-link {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .dropdown-menu a {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

/* 特性区块 */
.features {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    position: relative;
    overflow: hidden;
}

.features::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"><defs><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="rgba(16,61,255,0.1)"/></pattern></defs><rect width="100%" height="100%" fill="url(%23dots)"/></svg>');
    background-size: 20px 20px;
    opacity: 0.5;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    position: relative;
    z-index: 2;
}

/* 大屏优化 - 确保一行显示4个特性卡片 */
@media (min-width: 1400px) {
    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.feature-card {
    background: #ffffff;
    padding: 2.5rem 2rem;
    border-radius: 16px;
    text-align: center;
    border: 1px solid #e9ecef;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    animation: fadeInUp 0.6s ease-out;
    animation-fill-mode: both;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }

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

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, rgb(16, 61, 255), rgb(74, 144, 226));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(16, 61, 255, 0.15);
    border-color: rgb(16, 61, 255);
}

.feature-icon-wrapper {
    position: relative;
    display: inline-block;
    margin-bottom: 1.5rem;
}

.feature-icon {
    font-size: 3.5rem;
    position: relative;
    z-index: 2;
    transition: transform 0.3s ease;
    animation: pulse 2s ease-in-out infinite;
}

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

.icon-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(16, 61, 255, 0.1), rgba(74, 144, 226, 0.1));
    border-radius: 50%;
    z-index: 1;
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.feature-card:hover .icon-bg {
    transform: translate(-50%, -50%) scale(1.2);
    background: linear-gradient(135deg, rgba(16, 61, 255, 0.2), rgba(74, 144, 226, 0.2));
}

.feature-card h3 {
    color: rgb(16, 61, 255);
    font-size: 1.6rem;
    margin-bottom: 1rem;
    font-weight: 600;
    transition: color 0.3s ease;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.feature-stats {
    display: flex;
    justify-content: space-around;
    margin-bottom: 1.5rem;
    padding: 1rem 0;
    border-top: 1px solid #f0f0f0;
    border-bottom: 1px solid #f0f0f0;
    margin-top: auto;
    width: 100%;
}

.feature-stats .stat {
    text-align: center;
}

.feature-stats .stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: rgb(16, 61, 255);
    margin-bottom: 0.25rem;
}

.feature-stats .stat-label {
    font-size: 0.85rem;
    color: #666;
    font-weight: 500;
}

.feature-hover-content {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgb(16, 61, 255), rgb(74, 144, 226));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: translateY(100%);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    padding: 2rem;
}

.feature-card:hover .feature-hover-content {
    opacity: 1;
    transform: translateY(0);
}

.feature-details {
    list-style: none;
    text-align: left;
}

.feature-details li {
    margin-bottom: 0.75rem;
    position: relative;
    padding-left: 1.5rem;
    font-size: 1rem;
    font-weight: 500;
}

.feature-details li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #ffffff;
    font-weight: bold;
    font-size: 1.1rem;
}

/* 产品预览 */
.products-preview {
    background: #ffffff;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

/* 大屏优化 - 确保一行显示4个产品 */
@media (min-width: 1400px) {
    .products-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    /* 企业物联产品页面 - 一行显示3个产品 */
    .products-content .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.product-card {
    background: #ffffff;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid #e9ecef;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
    border-color: rgb(16, 61, 255);
}

.product-image {
    height: 200px;
    background: linear-gradient(45deg, rgb(16, 61, 255), rgb(74, 144, 226));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.image-placeholder {
    color: #ffffff;
    font-size: 1.2rem;
    font-weight: 600;
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border: 2px dashed rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    width: 80%;
    height: 80%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-content {
    padding: 1.5rem;
}

.product-content h3 {
    color: rgb(16, 61, 255);
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.product-content p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

/* 数据统计 */
.stats {
    background: linear-gradient(135deg, rgb(16, 61, 255), rgb(74, 144, 226));
    color: white;
}

/* 证书展示 */
.certificates {
    background: #f8f9fa;
    padding: 5rem 0;
}

.certificates-container {
    position: relative;
    overflow: hidden;
}

.certificates-container::before,
.certificates-container::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 50px;
    z-index: 2;
    pointer-events: none;
}

.certificates-container::before {
    left: 0;
    background: linear-gradient(to right, rgba(248, 249, 250, 1), rgba(248, 249, 250, 0));
}

.certificates-container::after {
    right: 0;
    background: linear-gradient(to left, rgba(248, 249, 250, 1), rgba(248, 249, 250, 0));
}

.certificates-scroll {
    display: flex;
    gap: 2rem;
    overflow-x: auto;
    padding: 1rem 0;
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE and Edge */
    cursor: grab;
}

.certificates-scroll:active {
    cursor: grabbing;
}

.certificates-scroll::-webkit-scrollbar {
    display: none; /* Chrome, Safari and Opera */
}

.certificate-item {
    min-width: 280px;
    background: #ffffff;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid #e9ecef;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    flex-shrink: 0;
    cursor: pointer;
    position: relative;
}

.certificate-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(16, 61, 255, 0.1), rgba(74, 144, 226, 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.certificate-item:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
    border-color: rgb(16, 61, 255);
}

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

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

.certificate-item:hover .certificate-info h4 {
    color: rgb(16, 61, 255);
}

.certificate-image {
    height: 180px;
    background: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease;
    z-index: 2;
}

.certificate-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 8px;
    background: #ffffff;
}

.certificate-placeholder {
    color: #ffffff;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border: 2px dashed rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    width: 90%;
    height: 90%;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1.4;
}

.certificate-info {
    padding: 1.5rem;
    text-align: center;
    position: relative;
    z-index: 2;
}

.certificate-info h4 {
    color: rgb(16, 61, 255);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
    transition: color 0.3s ease;
}

.certificate-info p {
    color: #666;
    font-size: 0.9rem;
    margin: 0;
}

.scroll-indicator {
    text-align: center;
    margin-top: 2rem;
    opacity: 0.7;
}

.scroll-text {
    color: #666;
    font-size: 0.9rem;
    font-style: italic;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

/* 响应式设计 - 证书展示 */
@media (max-width: 768px) {
    .certificate-item {
        min-width: 250px;
    }
    
    .certificate-image {
        height: 150px;
    }
    
    .certificate-image img {
        width: 100%;
        height: 100%;
        object-fit: contain;
        border-radius: 6px;
        background: #ffffff;
    }
    
    .certificate-placeholder {
        font-size: 0.9rem;
        padding: 1rem;
    }
    
    .certificate-info {
        padding: 1rem;
    }
    
    .certificate-info h4 {
        font-size: 1.1rem;
    }
    
    .certificate-info p {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .certificate-item {
        min-width: 220px;
    }
    
    .certificate-image {
        height: 120px;
    }
    
    .certificate-image img {
        width: 100%;
        height: 100%;
        object-fit: contain;
        border-radius: 4px;
        background: #ffffff;
    }
    
    .certificate-placeholder {
        font-size: 0.8rem;
        padding: 0.8rem;
    }
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

/* 大屏优化 - 确保一行显示4个统计数据 */
@media (min-width: 1400px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.stat-item {
    padding: 2rem;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.stat-label {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* 页脚 */
/* 企业级页脚样式 */
.footer {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: #ffffff;
    padding: 4rem 0 2rem;
    position: relative;
    overflow: hidden;
}

.footer::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"><defs><pattern id="footerGrid" width="30" height="30" patternUnits="userSpaceOnUse"><path d="M 30 0 L 0 0 0 30" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23footerGrid)"/></svg>');
    opacity: 0.6;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
    position: relative;
    z-index: 2;
}

/* 大屏优化 - 确保一行显示3个页脚区块 */
@media (min-width: 1400px) {
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
        gap: 4rem;
    }
}

.footer-section {
    position: relative;
}

.footer-section h3 {
    color: #ffffff;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, #007bff, #00d4ff);
    border-radius: 2px;
}

.footer-section h4 {
    color: #ffffff;
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-section h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, #007bff, #00d4ff);
    border-radius: 2px;
}

.footer-section p {
    color: #e8f4f8;
    margin-bottom: 0.8rem;
    line-height: 1.6;
    font-size: 0.95rem;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section li {
    margin-bottom: 0.8rem;
    position: relative;
    padding-left: 1.2rem;
}

.footer-section li::before {
    content: '▶';
    position: absolute;
    left: 0;
    color: #007bff;
    font-size: 0.7rem;
    top: 0.1rem;
}

.footer-section a {
    color: #e8f4f8;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 0.95rem;
    position: relative;
}

.footer-section a:hover {
    color: #00d4ff;
    transform: translateX(5px);
}

.footer-section a:hover::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, #00d4ff, transparent);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
    color: #b8c5d1;
    position: relative;
    z-index: 2;
}

.footer-bottom p {
    font-size: 0.9rem;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.footer-bottom a {
    color: #b8c5d1;
    text-decoration: none;
    transition: all 0.3s ease;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
}

.footer-bottom a:hover {
    color: #00d4ff;
    background: rgba(0, 212, 255, 0.1);
    transform: translateY(-1px);
}

/* 企业级页脚响应式优化 */
@media (min-width: 2560px) {
    .footer {
        padding: 6rem 0 3rem;
    }
    
    .footer-content {
        gap: 5rem;
        margin-bottom: 4rem;
    }
    
    .footer-section h3 {
        font-size: 1.8rem;
        margin-bottom: 2rem;
    }
    
    .footer-section h4 {
        font-size: 1.4rem;
        margin-bottom: 2rem;
    }
    
    .footer-section p,
    .footer-section a {
        font-size: 1.1rem;
    }
    
    .footer-bottom {
        padding-top: 3rem;
    }
    
    .footer-bottom p {
        font-size: 1rem;
    }
}

@media (min-width: 3840px) {
    .footer {
        padding: 8rem 0 4rem;
    }
    
    .footer-content {
        gap: 6rem;
        margin-bottom: 5rem;
    }
    
    .footer-section h3 {
        font-size: 2.2rem;
        margin-bottom: 2.5rem;
    }
    
    .footer-section h4 {
        font-size: 1.6rem;
        margin-bottom: 2.5rem;
    }
    
    .footer-section p,
    .footer-section a {
        font-size: 1.2rem;
    }
    
    .footer-bottom {
        padding-top: 4rem;
    }
    
    .footer-bottom p {
        font-size: 1.1rem;
    }
}

@media (max-width: 768px) {
    .footer {
        padding: 3rem 0 1.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        margin-bottom: 2rem;
    }
    
    .footer-section h3 {
        font-size: 1.3rem;
    }
    
    .footer-section h4 {
        font-size: 1.1rem;
    }
    
    .footer-bottom p {
        flex-direction: column;
        gap: 0.3rem;
    }
}



/* 页面标题 */
.page-header {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    padding: 8rem 0 4rem;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.page-header::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 1000 1000"><defs><pattern id="grid" width="60" height="60" patternUnits="userSpaceOnUse"><path d="M 60 0 L 0 0 0 60" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    background-size: 60px 60px;
    animation: moveGrid 20s linear infinite;
}

@keyframes moveGrid {
    0% { transform: translate(0, 0); }
    100% { transform: translate(60px, 60px); }
}

.page-header::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: rotate 30s linear infinite;
    pointer-events: none;
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.page-header h1 {
    font-size: 3rem;
    color: #ffffff;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5), 0 0 20px rgba(255, 255, 255, 0.3);
    position: relative;
    z-index: 3;
    animation: titleFadeIn 1s ease-out;
}

@keyframes titleFadeIn {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.page-header p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    position: relative;
    z-index: 3;
    animation: subtitleFadeIn 1s ease-out 0.3s both;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

@keyframes subtitleFadeIn {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 装饰性浮动元素 */
.page-header .floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 1;
}

.page-header .floating-elements::before,
.page-header .floating-elements::after {
    content: '';
    position: absolute;
    width: 100px;
    height: 100px;
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.page-header .floating-elements::before {
    top: 20%;
    left: 10%;
    animation: float1 6s ease-in-out infinite;
}

.page-header .floating-elements::after {
    top: 60%;
    right: 15%;
    animation: float2 8s ease-in-out infinite;
}

@keyframes float1 {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

@keyframes float2 {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(-180deg); }
}

/* 产品导航 */
.product-nav {
    background: #f8f9fa;
    padding: 2rem 0;
    border-bottom: 1px solid #e9ecef;
}

.product-nav-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.product-nav-tab {
    padding: 1rem 2rem;
    background: #ffffff;
    color: #333;
    text-decoration: none;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.product-nav-tab:hover,
.product-nav-tab.active {
    background: rgb(16, 61, 255);
    color: white;
    border-color: rgb(16, 61, 255);
    transform: translateY(-2px);
}

/* 产品区块 */
.product-section {
    padding: 4rem 0;
    background: #ffffff;
    scroll-margin-top: 100px; /* 为固定导航栏留出空间 */
}

.product-header {
    text-align: left;
    margin-bottom: 2rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
}

.product-header .product-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    margin-bottom: 0.5rem;
}

.product-header .product-header-row h2 {
    font-size: 2.5rem;
    color: rgb(16, 61, 255);
    margin: 0;
    flex: 1;
}

.product-header .product-header-row .btn-detail {
    background: rgb(16, 61, 255);
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    white-space: nowrap;
    margin-left: 2rem;
}

.product-header .product-header-row .btn-detail:hover {
    background: rgb(74, 144, 226);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 61, 255, 0.3);
}

.product-header h2 {
    font-size: 2.5rem;
    color: rgb(16, 61, 255);
    margin-bottom: 0;
}

.product-header p {
    font-size: 1.2rem;
    color: #666;
    margin: 0;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

/* 大屏优化 - 确保一行显示3个产品 */
@media (min-width: 1400px) {
    .product-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.product-item {
    background: #ffffff;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid #e9ecef;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.product-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
    border-color: rgb(16, 61, 255);
}

.product-item-image {
    height: 200px;
    background: linear-gradient(45deg, rgb(16, 61, 255), rgb(74, 144, 226));
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-item-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.product-item-content h3 {
    color: rgb(16, 61, 255);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.product-item-content p {
    color: #666;
    margin-bottom: 1rem;
    line-height: 1.6;
}

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

.product-features li {
    color: #666;
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.product-features li::before {
    content: '▶';
    color: rgb(16, 61, 255);
    position: absolute;
    left: 0;
}

/* 技术优势 */
.tech-advantages {
    padding: 4rem 0;
    background: #f8f9fa;
}

.tech-advantages .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.tech-advantages h2 {
    text-align: center;
    font-size: 2.5rem;
    color: rgb(16, 61, 255);
    margin-bottom: 3rem;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.tech-item {
    background: #ffffff;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: all 0.3s ease;
}

.tech-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.tech-icon {
    font-size: 3rem;
    color: rgb(16, 61, 255);
    margin-bottom: 1rem;
}

.tech-item h3 {
    font-size: 1.5rem;
    color: rgb(16, 61, 255);
    margin-bottom: 1rem;
}

.tech-item p {
    color: #666;
    line-height: 1.6;
}

/* 产品项内按钮样式 */
.product-item-content .btn-detail {
    background: rgb(16, 61, 255);
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    white-space: nowrap;
    margin-top: 1rem;
    display: inline-block;
    text-align: center;
}

.product-item-content .btn-detail:hover {
    background: rgb(74, 144, 226);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 61, 255, 0.3);
}

/* 动画效果 */
.animate-fadeInUp {
    animation: fadeInUp 0.6s ease-out;
    animation-fill-mode: both;
}

/* 性能优化 */
* {
    will-change: auto;
}

.btn,
.nav-link,
.product-item,
.feature-card {
    will-change: transform;
}

/* 减少重绘和重排 */
.container {
    contain: layout;
}

section {
    contain: layout style;
}

/* 优化字体渲染 */
body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* 图片优化 */
img {
    max-width: 100%;
    height: auto;
}

/* 滚动优化 */
html {
    scroll-behavior: smooth;
}

/* 减少动画对性能的影响 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 为不同元素设置不同的动画延迟 */
.animate-fadeInUp:nth-child(1) { animation-delay: 0.1s; }
.animate-fadeInUp:nth-child(2) { animation-delay: 0.2s; }
.animate-fadeInUp:nth-child(3) { animation-delay: 0.3s; }
.animate-fadeInUp:nth-child(4) { animation-delay: 0.4s; }
.animate-fadeInUp:nth-child(5) { animation-delay: 0.5s; }
.animate-fadeInUp:nth-child(6) { animation-delay: 0.6s; }

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

/* 企业简介 */
.company-intro {
    background: #ffffff;
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.intro-text h2 {
    color: rgb(16, 61, 255);
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: left;
}

.intro-text p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-size: 1.1rem;
    text-align: left;
}

.intro-image {
    height: 400px;
    background: linear-gradient(45deg, rgb(16, 61, 255), rgb(74, 144, 226));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    font-weight: 600;
}

/* 发展历程 */
.company-history {
    background: #f8f9fa;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, rgb(16, 61, 255), rgb(74, 144, 226));
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    display: flex;
    align-items: center;
}

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

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

.timeline-year {
    background: linear-gradient(45deg, rgb(16, 61, 255), rgb(74, 144, 226));
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    font-weight: 700;
    font-size: 1.2rem;
    box-shadow: 0 4px 15px rgba(16, 61, 255, 0.4);
    position: relative;
    z-index: 2;
}

.timeline-content {
    background: #ffffff;
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid #e9ecef;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    margin: 0 2rem;
    flex: 1;
}

.timeline-content h3 {
    color: rgb(16, 61, 255);
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.timeline-content p {
    color: #666;
    line-height: 1.6;
}

/* 企业文化 */
.company-culture {
    background: #ffffff;
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.culture-item {
    background: #ffffff;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    border: 1px solid #e9ecef;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.culture-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
    border-color: rgb(16, 61, 255);
}

.culture-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.culture-item h3 {
    color: rgb(16, 61, 255);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* 联系我们 */
.contact-us {
    background: #f8f9fa;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info h3,
.contact-form h3 {
    color: rgb(16, 61, 255);
    font-size: 1.8rem;
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2rem;
    padding: 1rem;
    background: #ffffff;
    border-radius: 8px;
    border: 1px solid #e9ecef;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.contact-icon {
    font-size: 2rem;
    margin-right: 1rem;
    color: rgb(16, 61, 255);
}

.contact-details h4 {
    color: rgb(16, 61, 255);
    margin-bottom: 0.5rem;
}

.contact-details p {
    color: #666;
    margin-bottom: 0.25rem;
}

/* 表单样式 */
.form {
    background: #ffffff;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid #e9ecef;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    color: rgb(16, 61, 255);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    color: #333;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: rgb(16, 61, 255);
    box-shadow: 0 0 10px rgba(16, 61, 255, 0.2);
    background: #ffffff;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #999;
}

/* 允许特定元素选择文本 */
.form-group input,
.form-group textarea,
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="password"],
textarea,
select {
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
    user-select: text;
}

/* 允许联系方式相关文字选择 */
.footer-section p,
.contact-details p,
.contact-item p,
.map-content p {
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
    user-select: text;
}

/* 地图区域 */
.map-section {
    background: #ffffff;
}

.map-container {
    max-width: 800px;
    margin: 0 auto;
}

.map-placeholder {
    height: 400px;
    background: linear-gradient(45deg, rgb(16, 61, 255), rgb(74, 144, 226));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.map-content {
    text-align: center;
    color: #ffffff;
    padding: 2rem;
}

.map-content h3 {
    color: #ffffff;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.map-content p {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

/* 响应式设计 */

/* 中等屏幕优化 */
@media (max-width: 1200px) and (min-width: 769px) {
    .container {
        max-width: 1000px;
    }
    
    .nav-container {
        max-width: 1000px;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }



    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .feature-card {
        padding: 2rem 1.5rem;
    }

    .feature-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .feature-hover-content {
        padding: 1.5rem;
    }

    .feature-details li {
        font-size: 0.9rem;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(15px);
        width: 100%;
        height: calc(100vh - 70px);
        text-align: center;
        transition: all 0.3s ease;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
        padding: 2rem 0;
        overflow-y: auto;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-item {
        margin: 1rem 0;
        width: 100%;
    }

    .nav-link {
        display: block;
        padding: 1rem 2rem;
        font-size: 1.2rem;
        color: #333;
        border-radius: 8px;
        margin: 0 1rem;
        transition: all 0.3s ease;
    }

    .nav-link:hover {
        background: #f8f9fa;
        color: #007bff;
        transform: translateX(5px);
    }

    .dropdown-menu {
        position: static;
        display: none;
        background: rgba(248, 249, 250, 0.9);
        box-shadow: none;
        border-radius: 8px;
        width: 90%;
        margin: 0.5rem auto 0;
        padding: 0.5rem 0;
        animation: none;
    }

    .dropdown-menu.active {
        display: block;
        animation: slideDown 0.3s ease;
    }

    .dropdown-menu a {
        padding: 0.8rem 1rem;
        border-radius: 6px;
        margin: 0.2rem 0.5rem;
        font-size: 0.9rem;
        text-align: center;
    }

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

    .hero-title {
        font-size: 2.5rem;
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8), 0 0 15px rgba(255, 255, 255, 0.3);
    }

    .hero-subtitle {
        font-size: 1.2rem;
        text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8);
        font-weight: 500;
    }

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

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

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

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        flex-direction: row !important;
    }

    .timeline-year {
        margin-left: 0;
    }

    .timeline-content {
        margin-left: 3rem;
        margin-right: 0;
    }

    .product-nav-tabs {
        flex-direction: column;
        align-items: center;
    }

    .product-nav-tab {
        width: 100%;
        max-width: 300px;
        text-align: center;
    }

    /* 小屏时标题与按钮换行并左对齐 */
    .product-header {
        align-items: flex-start;
    }
    
    .product-header .product-header-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .product-header .product-header-row h2 {
        margin-bottom: 0.5rem;
    }
    
    .product-header .product-header-row .btn-detail {
        margin-left: 0;
        align-self: flex-end;
    }

    /* 移动端页面标题优化 */
    .page-header h1 {
        font-size: 2.5rem;
    }

    .page-header p {
        font-size: 1.1rem;
    }

    /* 移动端隐藏部分装饰元素以提高性能 */
    .page-header .floating-elements::after {
        display: none;
    }

    .page-header::after {
        animation-duration: 60s;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 2rem;
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8), 0 0 10px rgba(255, 255, 255, 0.3);
    }

    /* 小屏幕进一步优化页面标题 */
    .page-header h1 {
        font-size: 2rem;
    }

    .page-header p {
        font-size: 1rem;
    }

    /* 小屏幕禁用复杂动画以提高性能 */
    .page-header::before {
        animation: none;
    }

    .page-header .floating-elements::before {
        display: none;
    }

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

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

/* 首页新区域样式 */
/* 公司介绍区域 */
.company-intro {
    padding: 4rem 0;
    background: #f8f9fa;
}

.intro-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: center;
}

.intro-text .section-title {
    color: #333;
    margin-bottom: 1.5rem;
    text-align: left;
}

.intro-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #666;
    margin-bottom: 2rem;
    text-align: left;
}

.intro-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

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

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: rgb(16, 61, 255);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    color: #666;
}

.intro-image {
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.intro-image image {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 12px;
}

/* 解决方案简略区域 */
.solutions-preview {
    padding: 4rem 0;
    background: white;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.solution-card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.solution-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.solution-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.solution-card h3 {
    color: #333;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.solution-card p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.solution-link {
    color: rgb(16, 61, 255);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.solution-link:hover {
    color: rgb(74, 144, 226);
}

/* 产品中心简略区域 */
.products-preview {
    padding: 4rem 0;
    background: #f8f9fa;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.product-card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.product-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.product-card h3 {
    color: #333;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.product-card p {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* 荣誉资质区域 */
.honors-section {
    padding: 4rem 0;
    background: white;
}

.honors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.honor-card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.honor-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.honor-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.honor-card h3 {
    color: #333;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.honor-card p {
    color: #666;
    line-height: 1.6;
}

/* 联系我们区域 */
.contact-section {
    padding: 4rem 0;
    background: #f8f9fa;
}

.contact-content {
    display: flex;
    justify-content: center;
    align-items: start;
}

.contact-info {
    max-width: 1200px;
    width: 100%;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1.2rem;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(16, 61, 255, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    min-height: 140px;
}

.contact-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(135deg, rgb(16, 61, 255), #4f46e5);
    border-radius: 0 4px 4px 0;
}

.contact-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(16, 61, 255, 0.15);
    border-color: rgba(16, 61, 255, 0.2);
}

.contact-icon {
    font-size: 2rem;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgb(16, 61, 255), #4f46e5);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(16, 61, 255, 0.3);
    margin-top: 0.2rem;
}

.contact-details {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.contact-label {
    color: #64748b;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.contact-value {
    color: #1e293b;
    margin: 0;
    line-height: 1.5;
    font-size: 0.95rem;
    font-weight: 500;
}

.contact-value:first-of-type {
    font-size: 1.05rem;
    font-weight: 600;
    color: #0f172a;
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.contact-form h3 {
    color: #333;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #333;
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: rgb(16, 61, 255);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(45deg, rgb(16, 61, 255), rgb(74, 144, 226));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(16, 61, 255, 0.3);
    color: #ffffff;
}

/* 新闻中心简略区域 */
.news-preview {
    padding: 4rem 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.news-card {
    background: white;
    border-radius: 20px;
    padding: 0;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid rgba(16, 61, 255, 0.1);
    position: relative;
}

.news-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, rgb(16, 61, 255), #4f46e5);
}

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(16, 61, 255, 0.15);
    border-color: rgba(16, 61, 255, 0.2);
}

.news-date {
    background: linear-gradient(135deg, rgb(16, 61, 255), #4f46e5);
    color: white;
    padding: 1.5rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.news-date::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    transform: rotate(45deg);
}

.news-date .day {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 0.2rem;
    position: relative;
    z-index: 1;
}

.news-date .month {
    display: block;
    font-size: 1rem;
    opacity: 0.9;
    font-weight: 500;
    position: relative;
    z-index: 1;
}

.news-date .year {
    display: block;
    font-size: 0.8rem;
    opacity: 0.8;
    font-weight: 400;
    position: relative;
    z-index: 1;
    margin-top: 0.2rem;
}

.news-content {
    padding: 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-content h3 {
    color: #1e293b;
    margin-bottom: 1rem;
    font-size: 1.4rem;
    line-height: 1.4;
    font-weight: 600;
    transition: color 0.3s ease;
}

.news-card:hover .news-content h3 {
    color: rgb(16, 61, 255);
}

.news-content p {
    color: #64748b;
    margin-bottom: 1.5rem;
    line-height: 1.7;
    flex: 1;
}

.news-meta {
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid #f1f5f9;
}

.news-time {
    color: #94a3b8;
    font-size: 0.85rem;
    font-weight: 500;
    background: #f8fafc;
    padding: 0.4rem 0.8rem;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    display: inline-block;
}

.news-category {
    background: linear-gradient(135deg, rgba(16, 61, 255, 0.1), rgba(79, 70, 229, 0.1));
    color: rgb(16, 61, 255);
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid rgba(16, 61, 255, 0.2);
    align-self: flex-start;
    transition: all 0.3s ease;
}

.news-card:hover .news-category {
    background: linear-gradient(135deg, rgb(16, 61, 255), #4f46e5);
    color: white;
    transform: translateY(-2px);
}

/* 区域底部按钮 */
.section-footer {
    text-align: center;
}

.section-footer .btn-primary {
    display: inline-block;
    padding: 1rem 2rem;
    background: linear-gradient(45deg, rgb(16, 61, 255), rgb(74, 144, 226));
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.section-footer .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(16, 61, 255, 0.3);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .contact-info {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .intro-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .intro-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .intro-image image {
        height: 250px;
    }
    
    .contact-content {
        padding: 0 1rem;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
        gap: 1.2rem;
    }
    
    .contact-item {
        padding: 1.5rem;
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .contact-icon {
        width: 60px;
        height: 60px;
        font-size: 1.8rem;
    }
    
    .contact-details {
        width: 100%;
    }
    
    .contact-label {
        font-size: 0.8rem;
    }
    
    .contact-value {
        font-size: 0.95rem;
    }
    
    .contact-value:first-of-type {
        font-size: 1rem;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
        gap: 1.2rem;
    }
    
    .news-card {
        flex-direction: column;
        text-align: center;
    }
    
    .news-date {
        align-self: center;
        padding: 1.2rem;
    }
    
    .news-date .day {
        font-size: 2rem;
    }
    
    .news-date .month {
        font-size: 0.9rem;
    }
    
    .news-date .year {
        font-size: 0.7rem;
    }
    
    .news-content {
        padding: 1.5rem;
    }
    
    .news-content h3 {
        font-size: 1.2rem;
    }
    
    .news-content p {
        font-size: 0.95rem;
    }
    
    .news-time {
        font-size: 0.8rem;
        padding: 0.3rem 0.6rem;
    }
    
    .news-category {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
    }
}

/* 统一卡片样式 - 用于所有页面 */
.unified-card {
    background: #ffffff;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid #e9ecef;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.unified-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
    border-color: rgb(16, 61, 255);
}

.unified-card-image {
    height: clamp(240px, 24vw, 320px);
    min-height: 240px;
    background: #f8f9fa;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid #e9ecef;
    background-position: center;
    background-repeat: no-repeat;
    background-size: contain;
}

.unified-card-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #ffffff;
}

.unified-card-image-placeholder {
    color: #6c757d;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
}

.unified-card-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.unified-card-title {
    color: rgb(16, 61, 255);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.unified-card-description {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
    flex: 1;
}

.unified-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #666;
    font-size: 0.9rem;
    border-top: 1px solid #e9ecef;
    padding-top: 1rem;
    margin-top: auto;
}

.unified-card-category {
    background: #f8f9fa;
    color: #495057;
    padding: 0.3rem 0.8rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid #e9ecef;
}

/* 统一网格布局 */
.unified-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

/* 更多按钮样式 */
.more-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgb(16, 61, 255);
    color: white;
    text-decoration: none;
    padding: 0.75rem 2rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    margin-top: 2rem;
}

.more-button:hover {
    background: rgb(74, 144, 226);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 61, 255, 0.3);
    color: white;
    text-decoration: none;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .unified-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .unified-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .unified-card-content {
        padding: 1rem;
    }
    
    .unified-card-title {
        font-size: 1.2rem;
    }
    
    .unified-card-description {
        font-size: 0.9rem;
    }
}

/* 详情页样式 */
.product-detail-container,
.solution-detail-container {
    padding: 4rem 0;
    background: #f8f9fa;
    min-height: 60vh;
}

.product-detail-content,
.solution-detail-content {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.product-info,
.solution-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    padding: 3rem;
    border-bottom: 1px solid #e9ecef;
}

.product-image-section,
.solution-image-section {
    position: relative;
}

.product-main-image,
.solution-main-image {
    width: 100%;
    height: clamp(340px, 38vw, 480px);
    min-height: 340px;
    background: #f8f9fa;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #e9ecef;
    overflow: hidden;
}

.product-main-image img,
.solution-main-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #ffffff;
}

.image-placeholder {
    color: #6c757d;
    font-size: 1.2rem;
    font-weight: 500;
    text-align: center;
}

.product-basic-info,
.solution-basic-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.product-basic-info h2,
.solution-basic-info h2 {
    color: rgb(16, 61, 255);
    font-size: 2rem;
    font-weight: 600;
    margin: 0;
}

.product-model,
.solution-model,
.product-category,
.solution-category {
    color: #666;
    font-size: 1.1rem;
    margin: 0;
}

.product-description,
.solution-description {
    margin-top: 1rem;
}

.product-description h3,
.solution-description h3 {
    color: #333;
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.product-description p,
.solution-description p {
    color: #666;
    line-height: 1.6;
    font-size: 1rem;
}

.product-rich-content,
.solution-rich-content {
    padding: 3rem;
}

.product-rich-content h3,
.solution-rich-content h3 {
    color: #333;
    font-size: 1.5rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid rgb(16, 61, 255);
    padding-bottom: 0.5rem;
}

.rich-text-content {
    color: #666;
    line-height: 1.8;
    font-size: 1rem;
}

.rich-text-content p {
    margin-bottom: 1.5rem;
}

.rich-text-content h4 {
    color: #333;
    font-size: 1.2rem;
    margin: 2rem 0 1rem 0;
}

.rich-text-content ul,
.rich-text-content ol {
    margin: 1rem 0;
    padding-left: 2rem;
}

.rich-text-content li {
    margin-bottom: 0.5rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .product-info,
    .solution-info {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 2rem;
    }
    
    .product-main-image,
    .solution-main-image {
        height: 320px;
        min-height: 320px;
    }
    
    .product-basic-info h2,
    .solution-basic-info h2 {
        font-size: 1.5rem;
    }
    
    .product-rich-content,
    .solution-rich-content {
        padding: 2rem;
    }
}