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

:root {
    --primary-color: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #818CF8;
    --secondary-color: #10B981;
    --accent-color: #F59E0B;
    --dark-color: #1F2937;
    --light-color: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gradient-primary: linear-gradient(135deg, #4F46E5 0%, #7C3AED 100%);
    --gradient-secondary: linear-gradient(135deg, #10B981 0%, #059669 100%);
    --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);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--light-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

/* Navbar */
.navbar {
    background: white;
    box-shadow: var(--shadow-md);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 15px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.logo-text {
    color: var(--dark-color);
}

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

.nav-links a {
    color: var(--gray-600);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary-color);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

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

.nav-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.lang-switch {
    background: var(--gray-100);
    border: none;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 500;
    color: var(--gray-700);
    transition: all 0.3s ease;
}

.lang-switch:hover {
    background: var(--primary-color);
    color: white;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--dark-color);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-align: center;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
}

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

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

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

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

.btn-white:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
}

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

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    background: linear-gradient(135deg, #F0F4FF 0%, #E8F5E9 100%);
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.5;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.2) 0%, rgba(124, 58, 237, 0.1) 100%);
    top: -100px;
    right: -100px;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(5, 150, 105, 0.1) 100%);
    bottom: -50px;
    left: -50px;
}

.shape-3 {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.2) 0%, rgba(217, 119, 6, 0.1) 100%);
    top: 50%;
    left: 30%;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--gray-600);
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-graphic {
    width: 400px;
    height: 400px;
    position: relative;
}

.graphic-circle {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--gradient-primary);
    opacity: 0.1;
    animation: pulse 3s ease-in-out infinite;
}

.graphic-dots {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 80%;
    background: radial-gradient(circle, var(--primary-color) 2px, transparent 2px);
    background-size: 20px 20px;
    opacity: 0.3;
}

.graphic-lines {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60%;
    height: 60%;
    border: 3px dashed var(--primary-light);
    border-radius: 50%;
    animation: rotate 20s linear infinite;
}

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

@keyframes rotate {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Section Styles */
.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 50px;
    color: var(--dark-color);
}

/* Features Section */
.features {
    padding: 100px 0;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.feature-card {
    text-align: center;
    padding: 40px 25px;
    border-radius: var(--radius-lg);
    background: var(--gray-100);
    transition: all 0.3s ease;
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.feature-card p {
    color: var(--gray-500);
    font-size: 0.95rem;
}

/* Services Preview */
.services-preview {
    padding: 100px 0;
    background: var(--gray-100);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.service-card {
    background: white;
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.service-card p {
    color: var(--gray-500);
}

/* Stats Section */
.stats {
    padding: 80px 0;
    background: var(--gradient-primary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 10px;
}

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

/* CTA Section */
.cta {
    padding: 100px 0;
    background: var(--dark-color);
}

.cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: 2.5rem;
    color: white;
    margin-bottom: 20px;
}

.cta-content p {
    color: var(--gray-400);
    font-size: 1.1rem;
    margin-bottom: 30px;
}

/* Footer */
.footer {
    background: var(--gray-700);
    color: white;
    padding: 80px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 2fr;
    gap: 40px;
    margin-bottom: 50px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.footer-logo .logo-text {
    color: white;
}

.footer-desc {
    color: var(--gray-400);
    font-size: 0.95rem;
}

.footer-col h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: white;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: var(--gray-400);
    transition: color 0.3s ease;
}

.footer-col ul li a:hover {
    color: white;
}

.contact-info li {
    display: flex;
    gap: 10px;
    color: var(--gray-400);
    font-size: 0.9rem;
}

.footer-bottom {
    border-top: 1px solid var(--gray-600);
    padding-top: 30px;
    text-align: center;
    color: var(--gray-400);
    font-size: 0.9rem;
}

.footer-bottom p {
    margin-bottom: 5px;
}

/* Page Header */
.page-header {
    padding: 140px 0 60px;
    background: var(--gradient-primary);
    text-align: center;
    color: white;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* About Page */
.about-intro {
    padding: 100px 0;
    background: white;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-content h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.about-content p {
    color: var(--gray-600);
    margin-bottom: 15px;
}

.about-graphic {
    width: 100%;
    height: 400px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.graphic-square {
    width: 300px;
    height: 300px;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    opacity: 0.2;
    transform: rotate(45deg);
}

.graphic-circle-sm {
    position: absolute;
    width: 150px;
    height: 150px;
    background: var(--gradient-secondary);
    border-radius: 50%;
    opacity: 0.3;
}

/* Mission Vision */
.mission-vision {
    padding: 100px 0;
    background: var(--gray-100);
}

.mv-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.mv-card {
    background: white;
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
}

.mv-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.mv-card h3 {
    font-size: 1.25rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.mv-card p {
    color: var(--gray-500);
}

/* Industry Section */
.industry-section {
    padding: 100px 0;
    background: white;
}

.industry-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.industry-main h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.industry-main p {
    color: var(--gray-600);
}

.industry-related h4 {
    font-size: 1.25rem;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.industry-list {
    list-style: disc;
    padding-left: 20px;
}

.industry-list li {
    color: var(--gray-600);
    margin-bottom: 10px;
}

/* Company Info */
.company-info {
    padding: 100px 0;
    background: var(--gray-100);
}

.info-card {
    background: white;
    padding: 50px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.info-label {
    font-size: 0.9rem;
    color: var(--gray-500);
    font-weight: 500;
}

.info-value {
    font-size: 1rem;
    color: var(--dark-color);
}

.info-value a {
    color: var(--primary-color);
}

.info-value a:hover {
    text-decoration: underline;
}

/* Services Page */
.services-main {
    padding: 100px 0;
    background: white;
}

.services-full-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.service-full-card {
    display: flex;
    gap: 25px;
    padding: 40px;
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
}

.service-full-card:hover {
    background: white;
    box-shadow: var(--shadow-xl);
    transform: translateY(-5px);
}

.service-full-icon {
    font-size: 3rem;
    flex-shrink: 0;
}

.service-full-content h3 {
    font-size: 1.25rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.service-full-content p {
    color: var(--gray-600);
    margin-bottom: 20px;
}

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

.service-features li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    color: var(--gray-600);
}

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

/* Products Page */
.products-main {
    padding: 100px 0;
    background: white;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-card {
    background: var(--gray-100);
    padding: 35px 30px;
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
    position: relative;
}

.product-card:hover {
    background: white;
    box-shadow: var(--shadow-xl);
    transform: translateY(-5px);
}

.product-card.featured {
    background: linear-gradient(135deg, #F0F4FF 0%, #E8F5E9 100%);
    border: 2px solid var(--primary-light);
}

.product-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--gradient-primary);
    color: white;
    padding: 5px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
}

.product-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.product-card h3 {
    font-size: 1.25rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.product-card > p {
    color: var(--gray-600);
    margin-bottom: 20px;
    font-size: 0.95rem;
}

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

.product-features li {
    padding: 6px 0;
    padding-left: 20px;
    position: relative;
    color: var(--gray-500);
    font-size: 0.9rem;
}

.product-features li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* Contact Page */
.contact-main {
    padding: 100px 0;
    background: white;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info-section h2,
.contact-form-section h2 {
    font-size: 1.75rem;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.contact-info-section > p {
    color: var(--gray-600);
    margin-bottom: 30px;
}

.contact-details {
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    gap: 15px;
    margin-bottom: 25px;
}

.contact-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: 1rem;
    margin-bottom: 5px;
    color: var(--dark-color);
}

.contact-text p {
    color: var(--gray-600);
    font-size: 0.95rem;
}

.contact-text a {
    color: var(--primary-color);
}

.contact-text a:hover {
    text-decoration: underline;
}

.company-details {
    background: var(--gray-100);
    padding: 25px;
    border-radius: var(--radius-md);
}

.company-details h3 {
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.company-details p {
    color: var(--gray-600);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

/* Contact Form */
.contact-form {
    background: var(--gray-100);
    padding: 40px;
    border-radius: var(--radius-lg);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

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

/* Map Section */
.map-section {
    padding: 80px 0;
    background: var(--gray-100);
}

.map-placeholder {
    background: white;
    border-radius: var(--radius-lg);
    padding: 80px;
    text-align: center;
    box-shadow: var(--shadow-md);
}

.map-content {
    max-width: 400px;
    margin: 0 auto;
}

.map-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.map-content p {
    color: var(--dark-color);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.map-address {
    color: var(--gray-500) !important;
    font-size: 1rem !important;
    font-weight: 400 !important;
}

/* Legal Pages */
.legal-content {
    padding: 80px 0;
    background: white;
}

.legal-document {
    max-width: 900px;
    margin: 0 auto;
}

.legal-section {
    margin-bottom: 40px;
}

.legal-section h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--dark-color);
    padding-bottom: 10px;
    border-bottom: 2px solid var(--gray-200);
}

.legal-section h3 {
    font-size: 1.15rem;
    margin: 25px 0 15px;
    color: var(--dark-color);
}

.legal-section p {
    color: var(--gray-600);
    margin-bottom: 15px;
    line-height: 1.8;
}

.legal-section ul {
    margin: 15px 0;
    padding-left: 25px;
}

.legal-section ul li {
    color: var(--gray-600);
    margin-bottom: 10px;
    position: relative;
    list-style: disc;
}

.contact-box {
    background: var(--gray-100);
    padding: 30px;
    border-radius: var(--radius-md);
    margin-top: 20px;
}

.contact-box p {
    margin-bottom: 8px;
}

.contact-box a {
    color: var(--primary-color);
}

.contact-box a:hover {
    text-decoration: underline;
}

/* Mobile Navigation */
.mobile-nav {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: white;
    padding: 20px;
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

.mobile-nav.active {
    display: block;
}

.mobile-nav ul {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.mobile-nav a {
    display: block;
    padding: 10px;
    color: var(--gray-600);
    font-weight: 500;
}

.mobile-nav a:hover,
.mobile-nav a.active {
    color: var(--primary-color);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .services-full-grid {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: 2.25rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-image {
        display: none;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .about-graphic {
        display: none;
    }
    
    .mv-grid {
        grid-template-columns: 1fr;
    }
    
    .industry-content {
        grid-template-columns: 1fr;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .cta-content h2 {
        font-size: 1.75rem;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .service-full-card {
        flex-direction: column;
        text-align: center;
    }
    
    .service-features li {
        text-align: left;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero-content h1 {
        font-size: 1.75rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .stat-number {
        font-size: 2.25rem;
    }
    
    .contact-form {
        padding: 25px;
    }
    
    .info-card {
        padding: 30px 20px;
    }
    
    .legal-document {
        padding: 0 10px;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

/* Smooth Transitions for Language Switch */
[data-en], [data-zh] {
    transition: opacity 0.2s ease;
}

/* Print Styles */
@media print {
    .navbar,
    .cta,
    .footer {
        display: none;
    }
    
    .page-header {
        padding-top: 20px;
        background: none;
        color: var(--dark-color);
    }
    
    .legal-content {
        padding: 20px 0;
    }
}