/* ========== 企业级网站样式重置 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 18px;
}

body {
    font-size: 1rem;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #2d3748;
    background: #ffffff;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========== 企业级设计系统 ========== */
:root {
    /* 主色调 - 工业蓝 */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    
    /* 中性色调 */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-900: #111827;
    
    /* 功能色 */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    
    /* 尺寸系统 */
    --container-xl: 1920px;
    --container-lg: 1200px;
    --container-md: 960px;
    --container-sm: 768px;
    
    /* 阴影系统 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* 边框半径 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* 间距系统 */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 1rem;
    --space-4: 1rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
}

/* ========== 企业级容器系统 ========== */
.container {
    width: 100%;
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

@media (min-width: 1400px) {
    .container {
        padding: 0 var(--space-12);
    }
}

@media (min-width: 1920px) {
    .container {
        padding: 0 var(--space-20);
    }
}

/* ========== 企业级导航栏 ========== */
.enterprise-navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    /* border-bottom: 1px solid var(--gray-200);  已去除导航栏底部分隔线 */
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
}

.enterprise-navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-lg);
}

.enterprise-navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.factory-icon {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.company-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1.2;
    margin: 0;
}

.company-subtitle {
    font-size: 1rem;
    color: var(--gray-500);
    font-weight: 500;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-link {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    font-size: 1rem;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #1d4ed8;
    background: var(--primary-50);
    font-weight: 700;
}

.nav-cta {
    display: flex;
    align-items: center;
}

.cta-phone {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    background: var(--primary-600);
    color: white;
    text-decoration: none;
    padding: var(--space-2) var(--space-6);
    border-radius: var(--radius-lg);
    font-weight: 600;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-md);
}

.cta-phone:hover {
    background: var(--primary-700);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: var(--space-2);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    margin: 3px 0;
    transition: all 0.3s ease;
    border-radius: 2px;
}

/* ========== 企业级按钮系统 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    border: none;
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.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: linear-gradient(135deg, var(--primary-700), var(--primary-700));
    color: #ffffff;
    box-shadow: var(--shadow-md);
    font-weight: 700;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    background: linear-gradient(135deg, var(--primary-700), var(--primary-600));
}

.btn-secondary {
    background: transparent;
    color: var(--primary-600);
    border: 2px solid var(--primary-200);
}

.btn-secondary:hover {
    background: var(--primary-50);
    border-color: var(--primary-600);
    transform: translateY(-1px);
}

.btn-large {
    padding: var(--space-4) var(--space-8);
    font-size: 1.1rem;
}

.btn-icon {
    font-size: 1.2rem;
}

/* ========== 企业级Hero区域 ========== */
.enterprise-hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    color: white;
    position: relative;
    overflow: hidden;
    margin-top: 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,0.05) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-20);
    align-items: center;
}

.badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: var(--space-1) var(--space-4);
    border-radius: var(--radius-xl);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-6);
    border: 1px solid rgba(255,255,255,0.3);
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-6);
    background: linear-gradient(135deg, #ffffff, #e0f2fe);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.7;
    margin-bottom: var(--space-8);
    opacity: 0.9;
    max-width: 600px;
}

.hero-stats {
    display: flex;
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.stat-label {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-top: var(--space-2);
    letter-spacing: 0.5px;
}

.hero-buttons {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.factory-showcase {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 
        0 25px 50px -12px rgba(0, 0, 0, 0.25),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.showcase-image {
    width: 100%;
    height: 500px;
    object-fit: cover;
    display: block;
}

.showcase-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: var(--space-8);
}

.overlay-content h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-2);
}

.overlay-content p {
    opacity: 0.9;
    font-size: 1rem;
}

/* ========== 企业级通用样式 ========== */
section {
    padding: var(--space-20) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-20);
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: var(--space-4);
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ========== 核心优势区域 ========== */
.enterprise-advantages {
    background: var(--gray-50);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-8);
}

.advantage-card {
    background: white;
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--gray-100);
}

.advantage-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-200);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: var(--space-4);
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.advantage-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-4);
}

.advantage-card p {
    color: var(--gray-600);
    line-height: 1.6;
}

/* ========== 生产能力区域 ========== */
.capabilities {
    background: white;
}

.capabilities-content {
    display: grid;
    gap: var(--space-12);
}

.capability-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-12);
    flex-wrap: wrap;
}

.stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-6);
    background: var(--primary-50);
    border-radius: var(--radius-lg);
    min-width: 150px;
}

.stat-number {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--primary-700);
    line-height: 1;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.stat-label {
    color: var(--gray-800);
    font-size: 1rem;
    font-weight: 600;
    margin-top: var(--space-2);
    letter-spacing: 0.5px;
}

.production-process h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-6);
    text-align: center;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-6);
}

.process-step {
    text-align: center;
    padding: var(--space-6);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    position: relative;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--primary-600);
    color: white;
    border-radius: 50%;
    font-weight: 700;
    margin-bottom: var(--space-4);
}

.process-step h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-2);
}

.process-step p {
    color: var(--gray-600);
    font-size: 1rem;
}

/* ========== 企业级产品展示 ========== */
.enterprise-products {
    background: var(--gray-50);
}

.products-highlight {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-20);
    align-items: center;
    margin-bottom: var(--space-20);
}

.highlight-content h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-4);
}

.highlight-content p {
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: var(--space-8);
}

.production-capacity {
    display: flex;
    gap: var(--space-12);
}

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

.capacity-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-600);
    line-height: 1;
}

.capacity-label {
    color: var(--gray-600);
    font-size: 1rem;
    margin-top: var(--space-1);
}

.products-showcase {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--space-8);
    margin-bottom: var(--space-20);
}

.product-card.enterprise {
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--gray-100);
    text-decoration: none;
    color: inherit;
    display: block;
}
.product-card.enterprise *,
.product-card.enterprise *:hover,
.product-card.enterprise *:focus,
.product-card.enterprise *:active,
.product-card.enterprise *:visited {
    text-decoration: none !important;
    color: inherit;
}

.product-card.enterprise:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-200);
}

.product-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

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

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

.product-badge {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    background: #ffffff;
    color: var(--primary-700);
    border: 1px solid var(--primary-200);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 600;
}

.product-content {
    padding: var(--space-8);
}

.product-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-4);
}

.product-description {
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: var(--space-6);
}

.product-specs {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
}

.spec {
    background: var(--gray-100);
    color: var(--gray-700);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 500;
}

.product-features {
    list-style: none;
    margin-bottom: var(--space-6);
}

.product-features li {
    padding: var(--space-2) 0;
    color: var(--gray-600);
    position: relative;
    padding-left: var(--space-6);
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: bold;
}

.products-cta {
    text-align: center;
    margin-top: var(--space-8);
}

/* ========== 质量体系 ========== */
.quality-system {
    background: white;
}

.quality-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-20);
    align-items: start;
}

.quality-certifications h3,
.quality-process h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-8);
}

.cert-grid {
    display: grid;
    gap: var(--space-6);
}

.cert-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-6);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
}

.cert-icon {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cert-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-1);
}

.cert-item p {
    color: var(--gray-600);
    font-size: 1rem;
}

.process-flow {
    display: grid;
    gap: var(--space-6);
}

.flow-step {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-6);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--primary-600);
    color: white;
    border-radius: 50%;
    font-weight: 700;
    font-size: 1.1rem;
}

.flow-step h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-1);
}

.flow-step p {
    color: var(--gray-600);
    font-size: 1rem;
}

/* ========== 关于我们 ========== */
.enterprise-about {
    background: var(--gray-50);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-20);
}

.company-intro h3,
.company-values h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-4);
}

.intro-text {
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: var(--space-8);
}

.company-milestones {
    display: grid;
    gap: var(--space-6);
}

.milestone {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.milestone-year {
    background: var(--primary-600);
    color: white;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 1rem;
}

.milestone-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-1);
}

.milestone-content p {
    color: var(--gray-600);
    font-size: 1rem;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-6);
}

.value-item {
    text-align: center;
    padding: var(--space-6);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.value-icon {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-4);
}

.value-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-2);
}

.value-item p {
    color: var(--gray-600);
    font-size: 1rem;
}

/* ========== 联系我们 ========== */
.contact {
    background: var(--gray-50);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-20);
    align-items: start;
}

.contact-info h3 {
    font-size: 1.5rem;
    color: var(--gray-900);
    margin-bottom: var(--space-8);
}

.contact-detail {
    display: flex;
    align-items: center;
    margin-bottom: var(--space-6);
    gap: var(--space-4);
}

.contact-detail span {
    font-size: 1.5rem;
}

.contact-detail p {
    color: var(--gray-600);
    margin: 0;
}

.contact-hours {
    background: white;
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.contact-hours h4 {
    font-size: 1.25rem;
    color: var(--gray-900);
    margin-bottom: var(--space-6);
    text-align: center;
}

.contact-hours p {
    color: var(--gray-600);
    margin-bottom: var(--space-4);
    padding: var(--space-2) 0;
    border-bottom: 1px solid var(--gray-200);
}

.contact-hours p:last-child {
    margin-bottom: 0;
    border-bottom: none;
}

/* ========== 页脚 ========== */
.footer {
    background: var(--gray-900);
    color: white;
    padding: var(--space-20) 0 var(--space-8);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.footer-section h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-4);
    color: #f9fafb;
}

.footer-section h4 {
    font-size: 1.125rem;
    margin-bottom: var(--space-4);
    color: #f9fafb;
}

.footer-section p {
    color: #d1d5db;
    margin-bottom: var(--space-2);
}

.footer-section a {
    display: block;
    color: #d1d5db;
    text-decoration: none;
    margin-bottom: var(--space-2);
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #60a5fa;
}

.footer-bottom {
    border-top: 1px solid var(--gray-700);
    padding-top: var(--space-4);
    text-align: center;
    color: #9ca3af;
}

/* ========== 响应式设计 ========== */
@media (max-width: 1200px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--space-12);
        text-align: center;
    }
    
    .products-highlight {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }
    
    .quality-content {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-4);
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 80px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-lg);
        padding: var(--space-8) 0;
        gap: var(--space-4);
    }

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

    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }
    
    .nav-cta {
        display: none;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-6);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .production-capacity {
        flex-direction: column;
        gap: var(--space-6);
    }
    
    .capability-stats {
        flex-direction: column;
        gap: var(--space-6);
    }
    
    .process-steps {
        grid-template-columns: 1fr;
    }
    
    .cert-grid {
        grid-template-columns: 1fr;
    }
    
    .process-flow {
        grid-template-columns: 1fr;
    }
    
    .values-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
}

@media (max-width: 480px) {
    .enterprise-hero {
        min-height: auto;
        padding: var(--space-16) 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-header h2 {
        font-size: 1.75rem;
    }
    
    .section-header p {
        font-size: 1rem;
    }
    
    .advantage-card,
    .product-card,
    .cert-item,
    .flow-step {
        padding: var(--space-6);
    }
}

/* ========== 超大屏幕优化 ========== */
@media (min-width: 1920px) {
    .hero-content {
        gap: var(--space-24);
    }
    
    .products-highlight {
        gap: var(--space-24);
    }
    
    .quality-content {
        gap: var(--space-24);
    }
    
    .about-content {
        gap: var(--space-24);
    }
    
    .advantages-grid {
        grid-template-columns: repeat(auto-fit, minmax(min(400px, 25%), 1fr));
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fit, minmax(min(450px, 30%), 1fr));
    }
}

/* ===== 企业站补充样式（原 enterprise-extras.css，已合并进单一 styles.css） ===== */

/* 图标字号（原 icon-styles.css） */
.feature-icon, .product-icon, .gear-icon, .service-icon, .support-icon, .quality-icon, .capability-icon {
  font-size: 3rem;
  line-height: 1;
}

/* 通用容器/区块兜底 */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
/* 大屏适配：1920px 显示器下内容过窄、两侧空白过大，放宽最大宽度 */
@media (min-width: 1400px) { .container { max-width: 1360px; } }
@media (min-width: 1920px) { .container { max-width: 1680px; padding: 0 2.5rem; } }
/* 企业导航链接：移除 styles.css 残留的 ::after 下划线（hover/active 用浅蓝背景 pill 表现） */
.enterprise-navbar .nav-menu .nav-link::after { display: none; }
/* 兜底：所有 navbar 链接禁止下划线/下边框，防浏览器缓存复活 */
.enterprise-navbar a,
.enterprise-navbar a:hover,
.enterprise-navbar a:focus,
.enterprise-navbar a:active,
.enterprise-navbar a:visited {
  text-decoration: none !important;
  border-bottom: none !important;
}
/* 全局兜底：所有卡片型 <a> 链接（产品/新闻/案例）禁止下划线（防浏览器默认链接样式复活） */
a.product-card,
a.product-card *,
a.news-list-card,
a.news-list-card *,
a.case-card,
a.case-card *,
a.advantage-card,
a.advantage-card *,
a.cert-item,
a.cert-item *,
a.flow-step,
a.flow-step *,
a.product-nav-item,
a.product-nav-item *,
a:hover,
a:focus,
a:active,
a:visited {
  text-decoration: none !important;
}
.section { padding: 5rem 0; }
.section-alt { background: #f8fafc; }

/* 内页 Hero */
.page-hero {
  position: relative;
  padding: 7rem 0 4rem;
  background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
  color: #fff;
  overflow: hidden;
}
.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(255,255,255,.12), transparent 45%);
  pointer-events: none;
}
.page-hero-content { position: relative; z-index: 2; text-align: center; }
.page-hero h1 { font-size: 2.6rem; font-weight: 800; margin-bottom: 1rem; }
.page-hero p { font-size: 1.1rem; opacity: .9; max-width: 720px; margin: 0 auto; }

/* 面包屑（详情页通用） */
.breadcrumb {
  display: flex; align-items: center; flex-wrap: wrap; gap: .4rem;
  font-size: 1rem; color: #64748b; margin-bottom: 2rem;
}
.breadcrumb a { color: #64748b; transition: color .2s; }
.breadcrumb a:hover { color: #2563eb; }
.breadcrumb-item.current { color: #1e293b; font-weight: 600; }
.breadcrumb-separator { color: #cbd5e1; }

/* 新闻列表 */
.news-list-layout {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem;
}
.news-list-card {
  display: flex; flex-direction: column; background: #fff; border-radius: 14px;
  overflow: hidden; box-shadow: 0 6px 24px rgba(15,23,42,.07);
  transition: transform .3s, box-shadow .3s; border: 1px solid #eef2f7;
}
.news-list-card:hover { transform: translateY(-6px); box-shadow: 0 18px 40px rgba(15,23,42,.13); }
.news-list-image { position: relative; aspect-ratio: 16/10; overflow: hidden; background: #eef2f7; }
.news-list-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.news-list-card:hover .news-list-image img { transform: scale(1.06); }
.news-list-body { padding: 1.5rem; display: flex; flex-direction: column; flex: 1; }
.news-list-meta {
  display: flex; align-items: center; gap: .8rem; font-size: 1rem;
  color: #64748b; margin-bottom: .8rem;
}
.news-list-cat { color: #2563eb; font-weight: 600; }
.news-list-title { font-size: 1.2rem; font-weight: 700; color: #1e293b; margin-bottom: .6rem; line-height: 1.4; }
.news-list-summary {
  color: #64748b; font-size: 1rem; line-height: 1.7; margin-bottom: 1.2rem;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.news-list-link { margin-top: auto; color: #2563eb; font-weight: 600; font-size: 1rem; }

/* 案例列表 */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.case-card {
  background: #fff; border-radius: 14px; overflow: hidden; border: 1px solid #eef2f7;
  box-shadow: 0 6px 24px rgba(15,23,42,.07); transition: transform .3s, box-shadow .3s;
}
.case-card:hover { transform: translateY(-6px); box-shadow: 0 18px 40px rgba(15,23,42,.13); }
.case-image { aspect-ratio: 16/10; overflow: hidden; background: #eef2f7; }
.case-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.case-card:hover .case-image img { transform: scale(1.06); }
.case-body { padding: 1.5rem; }
.case-title { font-size: 1.2rem; font-weight: 700; color: #1e293b; margin-bottom: .5rem; }
.case-summary { color: #64748b; font-size: 1rem; line-height: 1.6;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* 渲染内容（新闻/案例/单页正文，复用产品详情排版） */
.rich-text { font-size: 1rem; line-height: 1.9; color: #334155; }
.rich-text p { margin-bottom: 1.2rem; }
.rich-text img { max-width: 100%; border-radius: 10px; margin: 1rem 0; }
.rich-text h2, .rich-text h3 { color: #1e293b; margin: 1.8rem 0 1rem; font-weight: 800; }
.rich-text ul, .rich-text ol { margin: 0 0 1.2rem 1.4rem; }
.rich-text li { margin-bottom: .5rem; }

/* 分页 */
.pagination { display: flex; justify-content: center; align-items: center; gap: .5rem; margin: 3rem auto var(--space-8); flex-wrap: wrap; }
.page-btn {
  min-width: 42px; height: 42px; padding: 0 1rem; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid #e2e8f0; background: #fff; color: #475569; border-radius: 10px; font-size: 1rem;
  transition: all .2s; cursor: pointer; text-decoration: none;
}
.page-btn:hover { border-color: #2563eb; color: #2563eb; }
.page-btn.active { background: #1d4ed8; border-color: #1d4ed8; color: #fff; font-weight: 700; box-shadow: 0 4px 10px rgba(29, 78, 216, 0.35); }
.page-ellipsis { color: #94a3b8; padding: 0 .3rem; }

/* 错误页 */
.error-page { text-align: center; padding: 6rem 0; }
.error-code { font-size: 6rem; font-weight: 800; color: #2563eb; line-height: 1; }
.error-text { font-size: 1.2rem; color: #64748b; margin: 1.5rem 0 2rem; }

/* 关于/联系页区块复用企业设计 */
.about-section { padding: 5rem 0; }
.about-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 3.5rem; align-items: center; }
.about-text .lead { font-size: 1.15rem; color: #1e293b; font-weight: 600; margin-bottom: 1.2rem; line-height: 1.7; }
.about-text p { color: #64748b; line-height: 1.9; margin-bottom: 1rem; }
.about-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; margin-top: 2rem; }
.about-stat { background: #f8fafc; border: 1px solid #eef2f7; border-radius: 12px; padding: 1.3rem; }
.about-stat .num { font-size: 2rem; font-weight: 800; color: #2563eb; }
.about-stat .label { color: #64748b; font-size: 1rem; margin-top: .3rem; }
.about-image img { width: 100%; border-radius: 16px; box-shadow: 0 20px 50px rgba(15,23,42,.15); }

/* 响应式 */
@media (max-width: 900px) {
  .news-list-layout, .case-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .news-list-layout, .case-grid { grid-template-columns: 1fr; }
  .page-hero h1 { font-size: 2rem; }
}

/* homepage products: 3 cols (template design) */
.products-grid { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 900px) { .products-grid { grid-template-columns: 1fr; } }

/* ===== 产品详情页 ===== */
.section-title { font-size: 1.8rem; font-weight: 800; color: #1e293b; margin-bottom: 1.5rem; }
.btn-outline {
  display: inline-flex; align-items: center; gap: .4rem;
  border: 1px solid #cbd5e1; background: #fff; color: #475569;
  padding: 12px 22px; border-radius: 10px; font-weight: 600; text-decoration: none;
  transition: all .2s;
}
.btn-outline:hover { border-color: #2563eb; color: #2563eb; }

.product-hero { padding: 3rem 0 2rem; background: #fff; }
.product-hero-container {
  display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: start;
  max-width: 1200px; margin: 0 auto; padding: 0 1.5rem;
}
.product-gallery { display: flex; flex-direction: column; gap: 1rem; }
.product-main-image {
  border: 1px solid #eef2f7; border-radius: 14px; overflow: hidden; background: #f8fafc;
  aspect-ratio: 4/3;
}
.product-main-image img { width: 100%; height: 100%; object-fit: contain; }
.product-thumbnails { display: flex; gap: .7rem; flex-wrap: wrap; }
.product-thumb {
  width: 72px; height: 72px; border-radius: 10px; border: 1px solid #e2e8f0; background: #fff;
  cursor: pointer; overflow: hidden; padding: 0;
}
.product-thumb img { width: 100%; height: 100%; object-fit: contain; }
.product-thumb.active, .product-thumb:hover { border-color: #2563eb; }

.product-info { display: flex; flex-direction: column; gap: 1.2rem; }
.product-info-header { border-bottom: 1px solid #eef2f7; padding-bottom: 1.2rem; }
.product-title { font-size: 2rem; font-weight: 800; color: #1e293b; line-height: 1.3; }
.product-meta { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: .8rem; }
.product-meta-item {
  font-size: 1rem; color: #64748b; background: #f8fafc; border: 1px solid #eef2f7;
  padding: .35rem .8rem; border-radius: 8px;
}
.product-description { color: #475569; line-height: 1.8; font-size: 1.02rem; }
.product-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: .5rem; }

.product-detail { padding: 3rem 0 4rem; background: #f8fafc; }
.product-detail-container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.product-detail-layout { display: grid; grid-template-columns: 1fr 320px; gap: 2.5rem; align-items: start; }
.product-detail-content { color: #334155; line-height: 1.9; font-size: 1.02rem; }
.product-detail-sidebar { display: flex; flex-direction: column; gap: 1.5rem; position: sticky; top: 2rem; }
.product-detail-card {
  background: #fff; border: 1px solid #eef2f7; border-radius: 14px; padding: 1.5rem;
  box-shadow: 0 6px 24px rgba(15,23,42,.06);
}
.product-detail-card h3 { font-size: 1.15rem; color: #1e293b; margin-bottom: 1rem; }
.footer-links { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: .6rem; }
.footer-links a { color: #475569; text-decoration: none; transition: color .2s; }
.footer-links a:hover { color: #2563eb; }

.product-nav {
  display: flex; justify-content: space-between; gap: 1rem; max-width: 1200px;
  margin: 0 auto; padding: 2rem 1.5rem; flex-wrap: wrap;
}
.product-nav-item {
  display: flex; flex-direction: column; gap: .3rem; text-decoration: none;
  background: #fff; border: 1px solid #eef2f7; border-radius: 12px; padding: 1rem 1.4rem;
  box-shadow: 0 4px 16px rgba(15,23,42,.05); transition: all .2s; min-width: 220px;
}
.product-nav-item.next { text-align: right; margin-left: auto; }
.product-nav-item:hover { border-color: #2563eb; transform: translateY(-2px); }
.product-nav-link { font-size: 1rem; color: #94a3b8; }
.product-nav-title { font-size: 1rem; font-weight: 700; color: #1e293b; }

@media (max-width: 900px) {
  .product-hero-container { grid-template-columns: 1fr; gap: 2rem; }
  .product-detail-layout { grid-template-columns: 1fr; }
  .product-detail-sidebar { position: static; }
  .product-title { font-size: 1.6rem; }
}

/* ===== 关于/联系页区块 ===== */
.section-header { margin-bottom: 2rem; }
.section-label {
  display: inline-block; font-size: 1rem; font-weight: 700; letter-spacing: .08em;
  color: #2563eb; text-transform: uppercase; margin-bottom: .6rem;
}
.section-desc { color: #64748b; line-height: 1.8; margin-top: 1rem; max-width: 640px; }

/* 核心能力 */
.capability { padding: 5rem 0; }
.capability-container { display: grid; grid-template-columns: 1.1fr .9fr; gap: 3.5rem; align-items: center; }
.capability-list { display: flex; flex-direction: column; gap: 1.4rem; margin-top: 1.5rem; }
.capability-item { display: flex; gap: 1.2rem; align-items: flex-start; }
.capability-item h4 { font-size: 1.15rem; color: #1e293b; margin-bottom: .4rem; }
.capability-item p { color: #64748b; line-height: 1.7; }
.capability-visual { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.capability-card { border-radius: 14px; overflow: hidden; box-shadow: 0 12px 30px rgba(15,23,42,.1); aspect-ratio: 4/3; }
.capability-card img { width: 100%; height: 100%; object-fit: cover; }

/* 联系方式 / 表单 */
.contact-section { padding: 5rem 0; }
.contact-container { display: grid; grid-template-columns: 1fr 1fr; gap: 3.5rem; align-items: start; }
.contact-details { list-style: none; padding: 0; margin: 1.5rem 0 0; display: flex; flex-direction: column; gap: 1.1rem; }
.contact-detail { display: flex; gap: 1rem; align-items: flex-start; }
.contact-detail span { font-size: 1.4rem; line-height: 1.4; }
.contact-detail strong { display: block; color: #1e293b; font-size: 1rem; }
.contact-detail p { color: #64748b; margin: .2rem 0 0; }

.contact-card {
  background: #fff; border: 1px solid #eef2f7; border-radius: 16px; padding: 2rem;
  box-shadow: 0 10px 30px rgba(15,23,42,.07); display: flex; flex-direction: column; gap: 1.2rem;
}
.contact-card .section-header { margin-bottom: 0; }
.contact-card-note { display: flex; gap: 1rem; align-items: flex-start; padding-top: 1.2rem; border-top: 1px solid #eef2f7; }
.contact-card-icon { font-size: 1.4rem; line-height: 1.4; }
.contact-card-note strong { display: block; color: #1e293b; font-size: 1rem; }
.contact-card-note p { color: #64748b; margin: .2rem 0 0; }

@media (max-width: 900px) {
  .capability-container, .contact-container { grid-template-columns: 1fr; }
}

/* ===== Language switcher (multi-site, en site renders it) ===== */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  margin-left: 1rem;
  padding: .25rem;
  background: var(--primary-50, #eff6ff);
  border-radius: 999px;
}
.lang-switch .lang-link {
  padding: .35rem .8rem;
  border-radius: 999px;
  font-size: .9rem;
  font-weight: 600;
  color: var(--gray-600, #475569);
  text-decoration: none;
  transition: all .2s;
}
.lang-switch .lang-link:hover {
  color: var(--primary-700, #1d4ed8);
}
.lang-switch .lang-link.active {
  background: #fff;
  color: var(--primary-700, #1d4ed8);
  box-shadow: var(--shadow-sm, 0 1px 2px rgba(0,0,0,.08));
}
@media (max-width: 768px) {
  .lang-switch {
    margin: .5rem 0 0;
  }
}