/* ==========================================
   Xuanmeng Electronics - Global Styles
   Tech & Industrial Theme - Blue Palette
   ========================================== */

:root {
    /* Primary Colors */
    --primary-color: #0066cc;
    --primary-dark: #004c99;
    --primary-light: #3385d6;
    --secondary-color: #00a8e8;
    
    /* Accent Colors */
    --accent-blue: #0099ff;
    --accent-cyan: #00d4ff;
    --accent-electric: #00ffff;
    
    /* Neutral Colors */
    --dark-bg: #0a1628;
    --darker-bg: #050d1a;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --black: #000000;
    
    /* Text Colors */
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-light: #999999;
    --text-white: #ffffff;
    
    /* Border & Shadow */
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    --glow-blue: 0 0 20px rgba(0, 102, 204, 0.3);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-tech: 'Orbitron', monospace, sans-serif;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ==========================================
   Browser Compatibility
   ========================================== */

/* Add vendor prefixes for better browser support */
*,
*::before,
*::after {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}

/* ==========================================
   Reset & Base Styles
   ========================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-main);
    color: var(--text-primary);
    line-height: 1.6;
    background-color: var(--white);
    overflow-x: hidden;
}

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

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

ul, ol {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

/* ==========================================
   Container & Layout
   ========================================== */

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

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

/* ==========================================
   Navigation
   ========================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition-normal);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-tech);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo img {
    height: 40px;
    width: auto;
}

.logo i {
    font-size: 2rem;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-menu a {
    font-weight: 500;
    color: var(--text-primary);
    position: relative;
    padding: 0.5rem 0;
}

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

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

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

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.5rem;
}

.mobile-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    transition: var(--transition-normal);
}

/* Language Selector */
.language-selector {
    position: relative;
    margin-left: 1.5rem;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--light-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: 0.9rem;
    font-weight: 500;
}

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

.lang-btn:hover .fa-chevron-down {
    color: var(--white);
}

.lang-flag {
    font-size: 1.2rem;
    line-height: 1;
}

.lang-name {
    min-width: 60px;
    text-align: left;
}

.fa-chevron-down {
    font-size: 0.7rem;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    min-width: 180px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 1001;
}

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

.lang-option {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.75rem 1rem;
    text-align: left;
    cursor: pointer;
    transition: var(--transition-fast);
    border-bottom: 1px solid var(--border-color);
}

.lang-option:last-child {
    border-bottom: none;
}

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

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

.lang-option.active .lang-flag {
    filter: brightness(1.2);
}

.lang-option .fa-check {
    margin-left: auto;
    color: var(--white);
    font-size: 0.9rem;
}

/* ==========================================
   Hero Section
   ========================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--primary-dark) 100%);
    color: var(--text-white);
    padding: 8rem 2rem 6rem;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('https://images.unsplash.com/photo-1581092918056-0c4c3acd3789?w=1920&q=80') center/cover;
    opacity: 0.1;
    z-index: 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, transparent 0%, var(--dark-bg) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
}

.hero-title {
    font-family: var(--font-tech);
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.hero-title .highlight {
    color: var(--accent-cyan);
    position: relative;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2.5rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 300;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-stats {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
    max-width: 1000px;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

.stat-number {
    font-family: var(--font-tech);
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-cyan);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ==========================================
   Buttons
   ========================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 8px;
    transition: var(--transition-normal);
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0, 102, 204, 0.4);
}

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

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

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

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

.btn-lg {
    padding: 1.25rem 2.5rem;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
}

/* ==========================================
   Section Headers
   ========================================== */

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-subtitle {
    display: inline-block;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1rem;
}

.section-title {
    font-family: var(--font-tech);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* ==========================================
   About Section
   ========================================== */

.about-preview {
    background: var(--light-bg);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-content h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-family: var(--font-tech);
}

.about-content p {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.features-list {
    margin: 2rem 0;
}

.features-list li {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 1.05rem;
}

.features-list i {
    color: var(--primary-color);
    font-size: 1.25rem;
}

.about-image {
    position: relative;
}

.image-card {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.image-card img {
    width: 100%;
    height: auto;
    display: block;
}

.image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    padding: 2rem;
    color: var(--white);
    transform: translateY(100%);
    transition: var(--transition-normal);
}

.image-card:hover .image-overlay {
    transform: translateY(0);
}

.image-overlay i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--accent-cyan);
}

/* ==========================================
   Products Section
   ========================================== */

.products-preview {
    background: var(--white);
}

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

.product-card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    text-align: center;
    border: 1px solid var(--border-color);
}

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

.product-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2rem;
}

.product-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.product-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.product-link {
    color: var(--primary-color);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.product-link:hover {
    gap: 1rem;
}

/* ==========================================
   Industries Section
   ========================================== */

.industries-section {
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--primary-dark) 100%);
    color: var(--text-white);
}

.industries-section .section-subtitle,
.industries-section .section-title {
    color: var(--text-white);
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 2rem;
}

.industry-item {
    text-align: center;
    padding: 2rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    transition: var(--transition-normal);
}

.industry-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
}

.industry-item i {
    font-size: 3rem;
    color: var(--accent-cyan);
    margin-bottom: 1rem;
}

.industry-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
}

/* ==========================================
   Advantages Section
   ========================================== */

.advantages-section {
    background: var(--light-bg);
}

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

.advantage-card {
    position: relative;
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    overflow: hidden;
}

.advantage-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.advantage-number {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-family: var(--font-tech);
    font-size: 3rem;
    font-weight: 700;
    color: rgba(0, 102, 204, 0.1);
}

.advantage-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
}

.advantage-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.advantage-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ==========================================
   CTA Section
   ========================================== */

.cta-section {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 5rem 2rem;
    text-align: center;
}

.cta-content h2 {
    font-family: var(--font-tech);
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
}

/* ==========================================
   Page Header
   ========================================== */

.page-header {
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 10rem 2rem 6rem;
    text-align: center;
    margin-top: 4rem;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('https://images.unsplash.com/photo-1581092918056-0c4c3acd3789?w=1920&q=80') center/cover;
    opacity: 0.1;
}

.page-header h1 {
    font-family: var(--font-tech);
    font-size: 3.5rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.page-header p {
    font-size: 1.25rem;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

/* ==========================================
   Stats Section
   ========================================== */

.stats-section {
    background: var(--light-bg);
}

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

.stat-card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: var(--transition-normal);
}

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

.stat-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.stat-card .stat-number {
    font-family: var(--font-tech);
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-card p {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

/* ==========================================
   Mission Section
   ========================================== */

.mission-section {
    background: var(--white);
}

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

.mission-card {
    padding: 2.5rem 2rem;
    border-radius: 12px;
    background: var(--light-bg);
    text-align: center;
    transition: var(--transition-normal);
}

.mission-card:hover {
    background: var(--white);
    box-shadow: var(--shadow-md);
}

.mission-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2rem;
}

.mission-card h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.mission-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ==========================================
   Certifications Section
   ========================================== */

.certifications-section {
    background: var(--light-bg);
}

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

.cert-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: var(--transition-normal);
}

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

.cert-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.75rem;
}

.cert-card h4 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.cert-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Quality Standards */
.quality-section {
    background: var(--white);
}

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

.quality-card {
    background: var(--light-bg);
    padding: 2rem 1.5rem;
    border-radius: 12px;
    text-align: center;
    transition: var(--transition-normal);
}

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

.quality-card img {
    width: 100px;
    height: 100px;
    margin: 0 auto 1rem;
    object-fit: contain;
}

.quality-card h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    font-weight: 600;
}

.quality-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ==========================================
   Manufacturing Section
   ========================================== */

.manufacturing-section {
    background: var(--white);
}

.manufacturing-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.manufacturing-text h3 {
    font-size: 1.75rem;
    color: var(--primary-color);
    margin: 2rem 0 1rem;
}

.manufacturing-text p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.manufacturing-image img {
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

/* ==========================================
   Products Page
   ========================================== */

.product-filter-section {
    padding: 2rem 0;
    background: var(--light-bg);
}

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

.filter-btn {
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    background: var(--white);
    color: var(--text-primary);
    font-weight: 500;
    border: 2px solid transparent;
    transition: var(--transition-normal);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.product-category {
    padding: 4rem 0;
}

.product-category.alt-bg {
    background: var(--light-bg);
}

.category-header {
    text-align: center;
    margin-bottom: 3rem;
}

.category-header h2 {
    font-family: var(--font-tech);
    font-size: 2.25rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.category-header i {
    color: var(--primary-color);
    margin-right: 0.75rem;
}

.category-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto;
}

.products-showcase {
    display: grid;
    gap: 3rem;
}

.product-detail-card {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.product-detail-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.product-image-wrapper {
    position: relative;
    overflow: hidden;
}

.product-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

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

.product-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--accent-cyan);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
}

.product-detail-content {
    padding: 2.5rem;
}

.product-detail-content h3 {
    font-size: 1.75rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.product-code {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    font-family: monospace;
}

.product-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.product-specs {
    margin: 1.5rem 0;
    padding: 1.5rem;
    background: var(--light-bg);
    border-radius: 8px;
}

.product-specs li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
}

.product-specs i {
    color: var(--primary-color);
}

.product-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

/* Custom Solutions */
.custom-solutions-section {
    background: var(--primary-color);
    color: var(--white);
    padding: 5rem 0;
}

.custom-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    align-items: center;
}

.custom-text h2 {
    font-family: var(--font-tech);
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.custom-text p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    opacity: 0.95;
}

.custom-text .features-list li {
    color: var(--white);
}

.custom-text .features-list i {
    color: var(--accent-cyan);
}

.custom-image img {
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

/* ==========================================
   R&D Page
   ========================================== */

.rd-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.rd-stat-card {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 2.5rem 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-md);
}

.rd-stat-card i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.rd-stat-card h3 {
    font-family: var(--font-tech);
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.rd-stat-card p {
    font-size: 1.05rem;
    opacity: 0.95;
}

.capabilities-section {
    background: var(--light-bg);
}

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

.capability-card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

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

.capability-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
}

.capability-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.capability-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.capability-features {
    margin-top: 1.5rem;
}

.capability-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
}

.capability-features i {
    color: var(--primary-color);
}

.smart-manufacturing-section {
    background: var(--white);
}

.smart-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.smart-image img {
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.smart-text p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 2rem;
}

.system-card {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--light-bg);
    border-radius: 10px;
    margin-bottom: 1.5rem;
    transition: var(--transition-normal);
}

.system-card:hover {
    background: var(--white);
    box-shadow: var(--shadow-sm);
}

.system-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.system-content h4 {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.system-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.quality-control-section {
    background: var(--light-bg);
}

.quality-process-card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    position: relative;
    transition: var(--transition-normal);
}

.quality-process-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.process-number {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-family: var(--font-tech);
    font-size: 3rem;
    font-weight: 700;
    color: rgba(0, 102, 204, 0.1);
}

.quality-process-card h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.quality-process-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.equipment-section {
    background: var(--white);
}

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

.equipment-card {
    background: var(--light-bg);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    transition: var(--transition-normal);
}

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

.equipment-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.equipment-card h4 {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.equipment-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.certifications-detailed-section {
    background: var(--light-bg);
}

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

.cert-detail-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: var(--transition-normal);
}

.cert-detail-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.cert-badge {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2rem;
}

.cert-detail-card h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.cert-detail-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ==========================================
   Contact Page
   ========================================== */

.contact-section {
    background: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
}

.contact-form-wrapper h2 {
    font-family: var(--font-tech);
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.contact-form-wrapper > p {
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.contact-form {
    background: var(--light-bg);
    padding: 2.5rem;
    border-radius: 12px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

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

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.required {
    color: #e74c3c;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition-normal);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

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

.checkbox-group {
    display: flex;
    align-items: center;
    pointer-events: auto;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    color: var(--text-secondary);
    pointer-events: auto;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.checkbox-label a {
    color: var(--primary-color);
    text-decoration: underline;
}

.form-message {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
}

.form-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.contact-info-wrapper h2 {
    font-family: var(--font-tech);
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.contact-info-wrapper > p {
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.info-cards {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.info-card {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--light-bg);
    border-radius: 10px;
    transition: var(--transition-normal);
}

.info-card:hover {
    background: var(--white);
    box-shadow: var(--shadow-sm);
}

.info-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.info-content h4 {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.info-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.social-section {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 2px solid var(--border-color);
}

.social-section h4 {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.social-links-large {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--light-bg);
    border-radius: 8px;
    color: var(--text-primary);
    transition: var(--transition-normal);
}

.social-link:hover {
    background: var(--primary-color);
    color: var(--white);
}

.social-link i {
    font-size: 1.5rem;
}

/* Map Section */
.map-section {
    height: 400px;
    position: relative;
}

.map-placeholder {
    width: 100%;
    height: 100%;
    background: url('https://images.unsplash.com/photo-1524661135-423995f22d0b?w=1920&q=80') center/cover;
    position: relative;
}

.map-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
}

.map-content {
    text-align: center;
    color: var(--white);
}

.map-content i {
    font-size: 4rem;
    margin-bottom: 1rem;
    color: var(--accent-cyan);
}

.map-content h3 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.map-content p {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
}

/* FAQ Section */
.faq-section {
    background: var(--light-bg);
}

.faq-grid {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: 10px;
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    cursor: pointer;
    transition: var(--transition-normal);
}

.faq-question:hover {
    background: var(--light-bg);
}

.faq-question h4 {
    font-size: 1.125rem;
    color: var(--text-primary);
    margin: 0;
}

.faq-question i {
    color: var(--primary-color);
    transition: var(--transition-normal);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 2rem 1.5rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ==========================================
   Footer
   ========================================== */

.footer {
    background: var(--dark-bg);
    color: rgba(255, 255, 255, 0.8);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-column h4 {
    color: var(--white);
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-tech);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 1rem;
}

.footer-logo i {
    font-size: 2rem;
    color: var(--accent-cyan);
}

.footer-column p {
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: var(--transition-normal);
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-column ul li {
    margin-bottom: 0.75rem;
}

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition-normal);
}

.footer-column ul li a:hover {
    color: var(--white);
    padding-left: 0.5rem;
}

.contact-info li {
    display: flex;
    align-items: start;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.contact-info i {
    color: var(--accent-cyan);
    margin-top: 0.25rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* ==========================================
   Back to Top Button
   ========================================== */

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 999;
}

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

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

/* ==========================================
   Animations
   ========================================== */

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

[data-aos] {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate {
    opacity: 1;
}

/* ==========================================
   Responsive Design
   ========================================== */

@media (max-width: 1024px) {
    .about-grid,
    .manufacturing-content,
    .smart-content,
    .custom-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .product-detail-card {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }
    
    .language-selector {
        margin-left: auto;
        margin-right: 1rem;
    }
    
    .lang-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.85rem;
    }
    
    .lang-name {
        display: none;
    }
    
    .lang-dropdown {
        right: 0;
        min-width: 150px;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--white);
        flex-direction: column;
        align-items: start;
        padding: 2rem;
        box-shadow: var(--shadow-md);
        transition: var(--transition-normal);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .page-header h1 {
        font-size: 2.5rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    :root {
        font-size: 14px;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .hero {
        min-height: 80vh;
        padding: 6rem 1rem 4rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
}