/* ============================================
   Pubian Safety Gloves - Main Stylesheet
   Industrial Style | Blue + Gray Color Scheme
   ============================================ */

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

:root {
    --primary-blue: #165DFF;
    --primary-blue-dark: #0D47A1;
    --primary-blue-light: #4080FF;
    --secondary-blue: #003366;
    --gray-900: #1F2937;
    --gray-800: #374151;
    --gray-700: #4B5563;
    --gray-600: #6B7280;
    --gray-500: #9CA3AF;
    --gray-400: #D1D5DB;
    --gray-300: #E5E7EB;
    --gray-200: #F3F4F6;
    --gray-100: #F9FAFB;
    --white: #FFFFFF;
    --accent-orange: #F59E0B;
    --success-green: #10B981;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --transition: all 0.3s ease;
    --container-max: 1200px;
    --nav-height: 72px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--gray-800);
    line-height: 1.6;
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}

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

ul {
    list-style: none;
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--gray-900);
}

h1 { font-size: 2.75rem; }
h2 { font-size: 2.25rem; margin-bottom: 1rem; }
h3 { font-size: 1.5rem; margin-bottom: 0.75rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: 1rem;
    color: var(--gray-600);
}

.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    position: relative;
    display: inline-block;
    margin-bottom: 16px;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--primary-blue);
    border-radius: 2px;
}

.section-header p {
    max-width: 600px;
    margin: 20px auto 0;
    font-size: 1.1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 6px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    gap: 8px;
}

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

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

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

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

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

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

/* Placeholder Images */
.img-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--gray-200) 0%, var(--gray-300) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--gray-500);
    font-size: 0.9rem;
    text-align: center;
    padding: 20px;
    min-height: 200px;
    border: 2px dashed var(--gray-400);
    border-radius: 8px;
}

.img-placeholder svg {
    width: 48px;
    height: 48px;
    margin-bottom: 12px;
    opacity: 0.5;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background-color: var(--white);
    z-index: 1000;
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
    border-bottom-color: var(--gray-200);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 800;
    font-size: 1.1rem;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-brand {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--gray-900);
}

.logo-sub {
    font-size: 0.75rem;
    color: var(--gray-500);
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-link {
    font-weight: 500;
    color: var(--gray-700);
    position: relative;
    padding: 8px 0;
}

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

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

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

.nav-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.lang-switcher {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    background-color: var(--gray-100);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.lang-switcher a {
    padding: 4px 10px;
    border-radius: 14px;
    color: var(--gray-500);
    transition: var(--transition);
}

.lang-switcher a.active {
    background-color: var(--primary-blue);
    color: var(--white);
}

.lang-switcher a:hover:not(.active) {
    color: var(--primary-blue);
}

.nav-cta {
    padding: 10px 20px;
    font-size: 0.9rem;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background-color: var(--gray-800);
    transition: var(--transition);
    border-radius: 2px;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--secondary-blue) 0%, var(--primary-blue-dark) 50%, var(--primary-blue) 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
}

.hero-content {
    position: relative;
    z-index: 2;
    color: var(--white);
    max-width: 650px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 24px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    background-color: var(--success-green);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero h1 {
    color: var(--white);
    font-size: 3.25rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero h1 span {
    color: var(--accent-orange);
}

.hero-desc {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 40px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-image {
    position: absolute;
    right: -5%;
    top: 50%;
    transform: translateY(-50%);
    width: 45%;
    max-width: 600px;
    z-index: 1;
    opacity: 0.3;
}

.hero-image .img-placeholder {
    height: 500px;
    border: none;
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
}

.hero-stats {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    padding: 24px 0;
}

.hero-stats .container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.hero-stat-item {
    text-align: center;
    color: var(--white);
}

.hero-stat-item .number {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--white);
    line-height: 1;
    margin-bottom: 4px;
}

.hero-stat-item .number span {
    font-size: 1.25rem;
    color: var(--accent-orange);
}

.hero-stat-item .label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 500;
}

/* ============================================
   About Preview Section
   ============================================ */
.about-preview {
    background-color: var(--white);
}

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

.about-image .img-placeholder {
    height: 450px;
    border-radius: 12px;
    position: relative;
    overflow: hidden;
}

.about-image .img-placeholder::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    right: 20px;
    bottom: 20px;
    border: 4px solid var(--primary-blue);
    border-radius: 12px;
    z-index: -1;
}

.about-content h2 {
    color: var(--gray-900);
    margin-bottom: 24px;
}

.about-content h2 span {
    color: var(--primary-blue);
}

.about-tag {
    display: inline-block;
    padding: 6px 16px;
    background-color: rgba(22, 93, 255, 0.1);
    color: var(--primary-blue);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.about-features {
    margin: 30px 0;
}

.about-feature {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
}

.feature-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.25rem;
}

.feature-text h4 {
    margin-bottom: 4px;
    font-size: 1.05rem;
}

.feature-text p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* ============================================
   Stats Section
   ============================================ */
.stats-section {
    background: linear-gradient(135deg, var(--secondary-blue) 0%, var(--primary-blue-dark) 100%);
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
}

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

.stat-card {
    text-align: center;
    color: var(--white);
    padding: 30px 20px;
}

.stat-card .stat-number {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 12px;
    color: var(--white);
}

.stat-card .stat-number span {
    font-size: 1.5rem;
    color: var(--accent-orange);
}

.stat-card .stat-label {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
}

.stat-card .stat-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 16px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

/* ============================================
   Products Section
   ============================================ */
.products-section {
    background-color: var(--gray-100);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.product-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}

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

.product-image {
    position: relative;
    padding-top: 75%;
    overflow: hidden;
}

.product-image .img-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 0;
}

.product-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 4px 12px;
    background-color: var(--accent-orange);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 20px;
    z-index: 2;
}

.product-info {
    padding: 24px;
}

.product-category {
    font-size: 0.8rem;
    color: var(--primary-blue);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.product-name {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.product-desc {
    font-size: 0.9rem;
    color: var(--gray-500);
    margin-bottom: 16px;
    line-height: 1.5;
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 0.9rem;
}

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

/* ============================================
   Why Choose Us Section
   ============================================ */
.why-us-section {
    background-color: var(--white);
}

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

.feature-card {
    text-align: center;
    padding: 40px 24px;
    border-radius: 12px;
    background-color: var(--white);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.feature-card:hover {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.feature-card-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, rgba(22, 93, 255, 0.1) 0%, rgba(22, 93, 255, 0.05) 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: var(--primary-blue);
    transition: var(--transition);
}

.feature-card:hover .feature-card-icon {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
    color: var(--white);
    transform: scale(1.1);
}

.feature-card h3 {
    font-size: 1.15rem;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--gray-500);
    margin-bottom: 0;
    line-height: 1.6;
}

/* ============================================
   Clients Logo Wall
   ============================================ */
.clients-section {
    background-color: var(--gray-100);
    padding: 60px 0;
}

.clients-title {
    text-align: center;
    font-size: 1.1rem;
    color: var(--gray-500);
    font-weight: 500;
    margin-bottom: 40px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.clients-logos {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 30px;
    align-items: center;
}

.client-logo {
    height: 60px;
    background-color: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    font-size: 0.8rem;
    font-weight: 600;
    transition: var(--transition);
}

.client-logo:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
    background: linear-gradient(135deg, var(--primary-blue-dark) 0%, var(--primary-blue) 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 30px 30px;
}

.cta-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

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

.cta-content p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.15rem;
    margin-bottom: 40px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background-color: var(--gray-900);
    color: var(--gray-400);
    padding: 80px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-col h4 {
    color: var(--white);
    font-size: 1.1rem;
    margin-bottom: 24px;
    font-weight: 600;
}

.footer-about .logo {
    margin-bottom: 20px;
}

.footer-about .logo-brand {
    color: var(--white);
}

.footer-about .logo-sub {
    color: var(--gray-500);
}

.footer-about p {
    color: var(--gray-400);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 40px;
    height: 40px;
    background-color: var(--gray-800);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    transition: var(--transition);
}

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

.footer-links li {
    margin-bottom: 14px;
}

.footer-links a {
    color: var(--gray-400);
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-blue-light);
    padding-left: 4px;
}

.footer-contact li {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-contact svg {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    color: var(--primary-blue);
    margin-top: 3px;
}

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-bottom-links {
    display: flex;
    gap: 24px;
}

.footer-bottom-links a:hover {
    color: var(--primary-blue-light);
}

/* ============================================
   Page Header (Inner Pages)
   ============================================ */
.page-header {
    position: relative;
    padding: 140px 0 80px;
    background: linear-gradient(135deg, var(--secondary-blue) 0%, var(--primary-blue-dark) 100%);
    color: var(--white);
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
}

.page-header .container {
    position: relative;
    z-index: 1;
}

.page-header h1 {
    color: var(--white);
    margin-bottom: 12px;
}

.breadcrumb {
    display: flex;
    gap: 8px;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.7);
}

.breadcrumb a:hover {
    color: var(--white);
}

.breadcrumb .current {
    color: var(--white);
}

/* ============================================
   Products Page
   ============================================ */
.products-page {
    padding: 80px 0;
    background-color: var(--gray-100);
}

.product-category-section {
    margin-bottom: 60px;
}

.category-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 30px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--gray-200);
}

.category-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.25rem;
}

.category-header h2 {
    margin-bottom: 0;
    font-size: 1.75rem;
}

.category-header span {
    margin-left: auto;
    padding: 6px 16px;
    background-color: rgba(22, 93, 255, 0.1);
    color: var(--primary-blue);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.products-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product-detail-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.product-detail-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.product-detail-image {
    position: relative;
    padding-top: 75%;
    background-color: var(--gray-100);
}

.product-detail-image .img-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 0;
}

.product-detail-body {
    padding: 24px;
}

.product-detail-body h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
}

.product-specs {
    margin: 16px 0;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px dashed var(--gray-200);
    font-size: 0.9rem;
}

.spec-item:last-child {
    border-bottom: none;
}

.spec-label {
    color: var(--gray-500);
    font-weight: 500;
}

.spec-value {
    color: var(--gray-800);
    font-weight: 600;
}

.product-applications {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--gray-200);
}

.product-applications h4 {
    font-size: 0.95rem;
    margin-bottom: 10px;
    color: var(--gray-700);
}

.app-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.app-tag {
    padding: 4px 10px;
    background-color: var(--gray-100);
    color: var(--gray-600);
    border-radius: 4px;
    font-size: 0.8rem;
}

.product-cta-btn {
    width: 100%;
    margin-top: 16px;
    padding: 12px;
    font-size: 0.95rem;
}

/* ============================================
   About Page
   ============================================ */
.about-page {
    padding: 80px 0;
}

.company-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.intro-image .img-placeholder {
    height: 400px;
    border-radius: 12px;
}

.intro-content h2 {
    margin-bottom: 20px;
}

.intro-content p {
    margin-bottom: 16px;
    line-height: 1.8;
}

.factory-section {
    background-color: var(--gray-100);
    padding: 80px 0;
    margin: 0 -20px;
    padding-left: 20px;
    padding-right: 20px;
}

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

.factory-card {
    background: var(--white);
    border-radius: 12px;
    padding: 32px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.factory-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, rgba(22, 93, 255, 0.1) 0%, rgba(22, 93, 255, 0.05) 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: var(--primary-blue);
}

.factory-card h3 {
    font-size: 1.15rem;
    margin-bottom: 12px;
}

.factory-card p {
    font-size: 0.9rem;
    color: var(--gray-500);
    margin-bottom: 0;
    line-height: 1.7;
}

.certifications-section {
    padding: 80px 0;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.cert-card {
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: 12px;
    padding: 30px 20px;
    text-align: center;
    transition: var(--transition);
}

.cert-card:hover {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-md);
}

.cert-badge {
    width: 70px;
    height: 70px;
    margin: 0 auto 16px;
    background: linear-gradient(135deg, var(--accent-orange) 0%, #D97706 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.25rem;
    font-weight: 700;
}

.cert-card h4 {
    font-size: 1rem;
    margin-bottom: 6px;
}

.cert-card p {
    font-size: 0.8rem;
    color: var(--gray-500);
    margin-bottom: 0;
}

.timeline-section {
    background-color: var(--gray-100);
    padding: 80px 0;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 40px auto 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 0;
    bottom: 0;
    width: 3px;
    background-color: var(--gray-300);
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
    width: 50%;
    padding-right: 40px;
}

.timeline-item:nth-child(even) {
    margin-left: 50%;
    padding-right: 0;
    padding-left: 40px;
}

.timeline-dot {
    position: absolute;
    right: -9px;
    top: 5px;
    width: 18px;
    height: 18px;
    background-color: var(--primary-blue);
    border: 4px solid var(--white);
    border-radius: 50%;
    z-index: 1;
    box-shadow: 0 0 0 3px rgba(22, 93, 255, 0.2);
}

.timeline-item:nth-child(even) .timeline-dot {
    right: auto;
    left: -9px;
}

.timeline-year {
    display: inline-block;
    padding: 4px 14px;
    background-color: var(--primary-blue);
    color: var(--white);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.timeline-content {
    background: var(--white);
    padding: 20px;
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
}

.timeline-content h4 {
    margin-bottom: 8px;
    font-size: 1.05rem;
}

.timeline-content p {
    font-size: 0.9rem;
    color: var(--gray-500);
    margin-bottom: 0;
}

/* ============================================
   Contact Page
   ============================================ */
.contact-page {
    padding: 80px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
}

.contact-info h2 {
    margin-bottom: 20px;
}

.contact-info > p {
    margin-bottom: 30px;
    color: var(--gray-500);
}

.contact-info-list {
    margin-bottom: 40px;
}

.contact-info-item {
    display: flex;
    gap: 20px;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--gray-200);
}

.contact-info-item:last-child {
    border-bottom: none;
}

.contact-info-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.1rem;
}

.contact-info-text h4 {
    font-size: 1rem;
    margin-bottom: 4px;
}

.contact-info-text p,
.contact-info-text a {
    font-size: 0.95rem;
    color: var(--gray-600);
    margin-bottom: 0;
    line-height: 1.5;
}

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

.contact-map .img-placeholder {
    height: 250px;
    border-radius: 12px;
}

.contact-form-wrap {
    background: var(--white);
    padding: 40px;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
}

.contact-form-wrap h3 {
    margin-bottom: 8px;
}

.contact-form-wrap > p {
    margin-bottom: 30px;
    color: var(--gray-500);
    font-size: 0.95rem;
}

.contact-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--gray-700);
}

.form-group label .required {
    color: #EF4444;
    margin-left: 2px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-200);
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition);
    background-color: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(22, 93, 255, 0.1);
}

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

.submit-btn {
    width: 100%;
    padding: 16px;
    font-size: 1rem;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.875rem; }
    
    .hero h1 { font-size: 2.75rem; }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .clients-logos {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .products-row {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .factory-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }
    
    h1 { font-size: 1.875rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background-color: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 0;
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.open {
        display: flex;
    }
    
    .nav-menu .nav-link {
        padding: 14px 0;
        border-bottom: 1px solid var(--gray-100);
    }
    
    .nav-menu .nav-link::after {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-cta {
        display: none;
    }
    
    .lang-switcher {
        order: -1;
    }
    
    .hero {
        height: auto;
        padding: 120px 0 80px;
        min-height: auto;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-desc {
        font-size: 1rem;
    }
    
    .hero-stats .container {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .hero-stat-item .number {
        font-size: 1.75rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .stat-card .stat-number {
        font-size: 2rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .clients-logos {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }
    
    .cta-content h2 {
        font-size: 1.75rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer {
        padding: 60px 0 30px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .page-header {
        padding: 120px 0 60px;
    }
    
    .products-row {
        grid-template-columns: 1fr;
    }
    
    .company-intro {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 50px;
        padding-right: 0;
    }
    
    .timeline-item:nth-child(even) {
        margin-left: 0;
        padding-left: 50px;
    }
    
    .timeline-dot,
    .timeline-item:nth-child(even) .timeline-dot {
        left: 11px;
        right: auto;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-form-wrap {
        padding: 24px;
    }
    
    .contact-form .form-row {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .clients-logos {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cert-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-stats .container {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
}


/* ============================================
   新增：询盘表单 & Honeypot & 语言切换
   ============================================ */

/* Honeypot 防机器人隐藏字段 */
.hp-field {
    position: absolute !important;
    left: -9999px !important;
    top: -9999px !important;
    width: 1px !important;
    height: 1px !important;
    opacity: 0 !important;
    pointer-events: none !important;
}

/* 表单提交按钮loading状态 */
.submit-btn.loading {
    opacity: 0.7;
    cursor: not-allowed;
    position: relative;
}

.submit-btn.loading::after {
    content: '';
    display: inline-block;
    width: 14px;
    height: 14px;
    margin-left: 8px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: btn-spin 0.8s linear infinite;
    vertical-align: middle;
}

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

/* 表单消息提示 */
.form-message {
    font-weight: 500;
    border-radius: 8px;
    animation: fadeSlideIn 0.3s ease;
}

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

/* 语言切换器增强 */
.lang-switcher {
    display: flex;
    gap: 4px;
    padding: 4px;
    background: var(--gray-100);
    border-radius: 8px;
}

.lang-switcher a {
    padding: 6px 12px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--gray-500);
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.2s ease;
    cursor: pointer;
}

.lang-switcher a:hover {
    color: var(--primary-blue);
    background: var(--white);
}

.lang-switcher a.active {
    color: var(--white);
    background: var(--primary-blue);
}

/* 页面防闪烁（语言切换判断时隐藏内容） */
body {
    opacity: 1;
    transition: opacity 0.15s ease;
}

/* 证书页卡片网格 */
.cert-page-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.cert-page-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

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

.cert-image-link {
    display: block;
    background: var(--gray-100);
    padding: 20px;
    border-bottom: 1px solid var(--gray-200);
}

.cert-image-link img {
    transition: var(--transition);
}

.cert-image-link:hover img {
    transform: scale(1.02);
}

.cert-info {
    padding: 24px;
}

.cert-info h3 {
    font-size: 1.15rem;
    margin-bottom: 4px;
}

.cert-subtitle {
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 8px;
}

.cert-number {
    font-size: 0.85rem;
    color: var(--primary-blue);
    font-weight: 600;
    margin-bottom: 12px;
}

/* Logo图片样式 */
.logo {
    text-decoration: none;
    display: flex;
    align-items: center;
}

.logo-img {
    display: block;
    max-height: 40px;
    width: auto;
}

/* 响应式：移动端Logo大小 */
@media (max-width: 768px) {
    .logo-img {
        max-height: 32px;
    }
    
    .lang-switcher a {
        padding: 4px 8px;
        font-size: 0.75rem;
    }
}