/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

:root {
    /* Premium Gold Palette - Based on Logo */
    --gold: #D4AF37;
    --gold-light: #E5C158;
    --gold-accent: #D4AF37;
    --gold-highlight: #F0D878;
    --black: #1A1A1A;
    --dark-grey: #2D2D2D;
    --medium-grey: #666666;
    --medium-dark-grey: #4A4A4A;
    --light-grey: #999999;
    --bg-grey: #F5F5F5;
    --bg-light: #FAFAFA;
    --white: #FFFFFF;
    --border-color: #E0E0E0;
    --vh: 1vh; /* Mobile viewport height fix */
}

html {
    scroll-behavior: smooth;
}

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

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

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--dark-grey);
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: var(--gold);
}

/* Dropdown Menu */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    min-width: 250px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    border-radius: 8px;
    padding: 10px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    list-style: none;
}

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

.dropdown-menu li {
    padding: 0;
}

.dropdown-menu a {
    display: block;
    padding: 12px 20px;
    color: var(--dark-grey);
    font-size: 14px;
    text-transform: none;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
}

.dropdown-menu a:hover {
    background: var(--bg-grey);
    color: var(--gold);
    padding-left: 25px;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--dark-grey);
    transition: all 0.3s ease;
}

/* Language Selector */
.language-selector {
    position: relative;
}

.language-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
    font-size: 14px;
    color: var(--dark-grey);
}

.language-btn:hover {
    background: var(--bg-grey);
    border-color: var(--gold);
    color: var(--gold);
}

.language-icon {
    font-size: 16px;
    line-height: 1;
}

.current-language {
    font-weight: 500;
    letter-spacing: 0.5px;
}

.language-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: var(--white);
    min-width: 200px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    border-radius: 8px;
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    list-style: none;
    z-index: 1001;
}

.language-selector.active .language-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-dropdown li {
    padding: 0;
}

.language-dropdown a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    color: var(--dark-grey);
    font-size: 14px;
    text-decoration: none;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.language-dropdown a:hover {
    background: var(--bg-grey);
    color: var(--gold);
    padding-left: 25px;
}

.language-dropdown a.active-lang {
    background: var(--gold);
    color: var(--white);
    font-weight: 500;
}

/* Hero Section */
.hero {
    width: 100%;
    height: 75vh;
    min-height: 550px;
    max-height: 800px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
}

.hero-content {
    display: none;
}

.btn {
    padding: 15px 40px;
    border: 1px solid transparent;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-transform: uppercase;
}

.btn-primary {
    background: var(--gold);
    color: var(--white);
    border-color: var(--gold);
    position: relative;
    overflow: hidden;
    box-shadow: 0 3px 12px rgba(212, 175, 55, 0.35);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

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

.btn-primary:hover {
    background: var(--gold-highlight);
    border-color: var(--gold-highlight);
    box-shadow: 0 4px 20px rgba(212, 175, 55, 0.5);
    transform: translateY(-2px);
}

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

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

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator span {
    display: block;
    width: 1px;
    height: 40px;
    background: var(--gold);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* Section Styles */
section {
    padding: 120px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
    position: relative;
}

.section-header h2 {
    font-size: 42px;
    font-weight: 300;
    margin-bottom: 15px;
    letter-spacing: 4px;
    color: var(--black);
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.section-header p {
    font-size: 16px;
    color: var(--medium-grey);
    letter-spacing: 2px;
    margin-top: 25px;
}

/* Products Section */
.products {
    background: var(--white);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 60px;
}

.product-card {
    background: var(--white);
    transition: all 0.4s ease;
    text-decoration: none;
    display: block;
    border: 1px solid transparent;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-10px);
    border-color: var(--gold);
    box-shadow: 0 8px 24px rgba(212, 175, 55, 0.2);
}

.product-details {
    overflow: hidden;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        max-height: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        max-height: 500px;
        transform: translateY(0);
    }
}

.product-image {
    height: 360px;
    background: var(--bg-grey);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 30px;
    border-radius: 4px;
}

.placeholder-image {
    font-size: 20px;
    font-weight: 300;
    color: var(--light-grey);
    letter-spacing: 2px;
}

.placeholder-image.large {
    font-size: 28px;
}

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

.product-info h3 {
    font-size: 32px;
    font-weight: 300;
    margin-bottom: 15px;
    letter-spacing: 2px;
    color: var(--black);
}

.product-info > p {
    color: var(--medium-grey);
    font-size: 16px;
    line-height: 1.8;
    letter-spacing: 1px;
    margin-bottom: 20px;
}

.product-link {
    color: var(--light-grey);
    font-size: 15px;
    letter-spacing: 2px;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
}

.product-link:hover {
    color: var(--gold);
}

/* Innovation Section */
.innovation {
    background: var(--bg-grey);
}

.innovation-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.innovation-item {
    text-align: center;
    padding: 40px 35px;
    background: var(--white);
    border-radius: 4px;
    transition: all 0.4s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    border: 1px solid transparent;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.innovation-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(212, 175, 55, 0.15);
    border-color: var(--gold);
}

.innovation-icon {
    margin-bottom: 25px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.innovation-icon svg {
    transition: transform 0.3s ease;
}

.innovation-item:hover .innovation-icon svg {
    transform: scale(1.1);
    filter: drop-shadow(0 0 12px rgba(212, 175, 55, 0.5));
}

.innovation-item h3 {
    font-size: 22px;
    font-weight: 400;
    margin-bottom: 18px;
    letter-spacing: 2px;
    color: var(--black);
}

.innovation-item p {
    color: var(--medium-grey);
    font-size: 15px;
    line-height: 1.8;
    letter-spacing: 1px;
}

/* Scenarios Section */
.scenarios {
    background: var(--white);
}

.scenario-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.scenario-item {
    background: var(--bg-grey);
    overflow: hidden;
    transition: all 0.4s ease;
    border-radius: 4px;
    border: 1px solid transparent;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.scenario-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 28px rgba(212, 175, 55, 0.15);
    border-color: var(--gold);
}

.scenario-image {
    height: 350px;
    background: var(--dark-grey);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    overflow: hidden;
}

.scenario-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%) contrast(1.2) brightness(1.1);
    transition: filter 0.3s ease;
}

.scenario-item:hover .scenario-image img {
    filter: grayscale(0%) contrast(1) brightness(1);
}

.scenario-item:hover .scenario-image {
    background: var(--medium-dark-grey);
}

.scenario-image svg {
    transition: transform 0.3s ease;
}

.scenario-item:hover .scenario-image svg {
    transform: scale(1.1);
}

.scenario-content {
    padding: 35px;
    text-align: center;
}

.scenario-content h3 {
    font-size: 22px;
    font-weight: 300;
    margin-bottom: 10px;
    letter-spacing: 2px;
    color: var(--black);
}

.scenario-title-en {
    color: var(--gold);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 1px;
    margin-bottom: 12px;
    font-style: italic;
}

.scenario-content p {
    color: var(--medium-grey);
    font-size: 14px;
    line-height: 1.8;
    letter-spacing: 1px;
}

/* Applications Section */
.applications {
    background: var(--bg-grey);
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
}

.applications .scenario-item {
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.4s ease;
}

.applications .scenario-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(212, 175, 55, 0.2);
}

.applications .scenario-image {
    height: 280px;
    overflow: hidden;
}

.applications .scenario-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%) contrast(1.1) brightness(1.05);
    transition: filter 0.3s ease, transform 0.3s ease;
}

.applications .scenario-item:hover .scenario-image img {
    filter: grayscale(0%);
    transform: scale(1.05);
}

.applications .scenario-content {
    padding: 35px 30px;
    text-align: center;
}

.applications .scenario-content h3 {
    font-size: 20px;
    font-weight: 500;
    margin-bottom: 15px;
    letter-spacing: 1px;
    color: var(--black);
    line-height: 1.4;
}

.applications .scenario-content p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--medium-grey);
    letter-spacing: 0.5px;
}

/* Applications List - Designed For Your Mission */
.scenarios.applications-list-container {
    background: linear-gradient(135deg, #FAFAFA 0%, #F5F5F5 100%);
    position: relative;
    overflow: hidden;
}

.scenarios.applications-list-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.applications-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.application-item {
    background: var(--white);
    padding: 40px;
    border-radius: 12px;
    border: 2px solid transparent;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.application-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--gold), var(--gold-highlight));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.application-item::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.03) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.application-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 40px rgba(212, 175, 55, 0.15);
    border-color: rgba(212, 175, 55, 0.2);
}

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

.application-item:hover::after {
    opacity: 1;
}

.application-item h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--black);
    margin-bottom: 20px;
    letter-spacing: 0.5px;
    line-height: 1.4;
    position: relative;
    display: flex;
    align-items: center;
    gap: 12px;
}

.application-item h3::before {
    content: '';
    display: block;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--gold), var(--gold-highlight));
    border-radius: 8px;
    flex-shrink: 0;
    opacity: 0.8;
    transition: all 0.3s ease;
}

.application-item:hover h3::before {
    opacity: 1;
    transform: scale(1.1) rotate(5deg);
}

.application-item p {
    font-size: 15px;
    line-height: 1.9;
    color: var(--medium-grey);
    letter-spacing: 0.3px;
    margin: 0;
    position: relative;
}

/* About Section */
.about {
    background: var(--bg-grey);
}

.about-brand {
    background: var(--white);
    padding: 140px 0;
}

.about-brand-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.about-brand-content h2 {
    font-size: 36px;
    font-weight: 300;
    margin-bottom: 40px;
    letter-spacing: 3px;
    color: var(--black);
    line-height: 1.4;
}

.about-brand-content p {
    font-size: 18px;
    line-height: 2;
    color: var(--medium-grey);
    letter-spacing: 0.5px;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.about-text h2 {
    font-size: 42px;
    font-weight: 300;
    margin-bottom: 25px;
    letter-spacing: 4px;
    color: var(--black);
}

.lead {
    font-size: 20px;
    color: var(--light-grey);
    margin-bottom: 50px !important;
    font-weight: 300;
    letter-spacing: 2px;
    text-align: center;
}

.about-block {
    background: var(--white);
    padding: 35px;
    margin-bottom: 30px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.4s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.about-block:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 32px rgba(212, 175, 55, 0.15);
    border-color: var(--gold);
}

.about-block-icon {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.about-block-icon svg {
    transition: transform 0.3s ease;
}

.about-block:hover .about-block-icon svg {
    transform: scale(1.1);
    filter: drop-shadow(0 0 8px rgba(212, 175, 55, 0.5));
}

.about-block h3 {
    font-size: 22px;
    font-weight: 500;
    margin-bottom: 15px;
    letter-spacing: 2px;
    color: var(--black);
}

.about-block p {
    color: var(--medium-grey);
    font-size: 15px;
    line-height: 1.9;
    letter-spacing: 0.5px;
}

.about-text p {
    color: var(--medium-grey);
    font-size: 15px;
    line-height: 2;
    margin-bottom: 15px;
    letter-spacing: 1px;
}

.stats {
    display: flex;
    gap: 50px;
    margin-top: 50px;
}

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

.stat-number {
    display: block;
    font-size: 48px;
    font-weight: 300;
    color: var(--light-grey);
    letter-spacing: 2px;
}

.stat-label {
    font-size: 14px;
    color: var(--light-grey);
    letter-spacing: 2px;
    margin-top: 5px;
}

.about-image {
    height: 500px;
    background: var(--dark-grey);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Contact Section */
.contact {
    background: var(--white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 80px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.contact-item h4 {
    font-size: 14px;
    color: var(--black);
    margin-bottom: 10px;
    letter-spacing: 2px;
    font-weight: 500;
}

.contact-item p {
    color: var(--light-grey);
    font-size: 15px;
    letter-spacing: 1px;
}

.contact-form {
    padding: 40px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
    font-size: 15px;
    letter-spacing: 1px;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--light-grey);
}

.contact-form button {
    width: 100%;
}

/* Footer */
.footer {
    background: var(--dark-grey);
    color: var(--white);
    padding: 50px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 60px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 14px;
    margin-bottom: 25px;
    letter-spacing: 2px;
    font-weight: 500;
    color: var(--white);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
    font-size: 14px;
    letter-spacing: 1px;
}

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

.footer-logo img {
    height: 35px;
}

.footer-section ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 15px 30px;
    align-items: center;
}

.footer-section ul li {
    margin-bottom: 0;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 14px;
    letter-spacing: 1px;
    white-space: nowrap;
}

.footer-section ul li {
    margin-bottom: 0;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 14px;
    letter-spacing: 1px;
}

.footer-section ul li a:hover {
    color: var(--gold);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 13px;
    letter-spacing: 1px;
}

.social-links a:hover {
    background: var(--gold);
    color: var(--white);
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.4);
    font-size: 13px;
    letter-spacing: 1px;
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero {
        height: 75vh;
        min-height: 550px;
        max-height: 800px;
    }

    .section-header h2 {
        font-size: 36px;
    }

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

    .about-image {
        height: 400px;
    }

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

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats {
        gap: 30px;
    }

    .about-brand-content h2 {
        font-size: 28px;
        letter-spacing: 2px;
    }

    .about-brand-content p {
        font-size: 16px;
    }

    /* Enhanced navbar for tablet */
    .navbar .container {
        padding: 15px;
    }

    .nav-menu {
        gap: 25px;
    }

    .nav-menu a {
        font-size: 13px;
    }

    /* Applications grid for tablet */
    .applications-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 30px;
    }

    .applications .scenario-image {
        height: 240px;
    }

    .applications .scenario-content {
        padding: 30px 25px;
    }

    .applications .scenario-content h3 {
        font-size: 18px;
    }
}

@media (max-width: 768px) {
    /* Container adjustments */
    .container {
        padding: 0 15px;
    }

    /* Navigation enhancements */
    .navbar {
        padding: 10px 0;
    }

    .navbar .container {
        padding: 10px 15px;
    }

    .logo img {
        height: 32px;
    }

    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        padding: 20px;
        border-bottom: 2px solid var(--gold);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        gap: 15px;
    }

    .nav-menu.active {
        display: flex;
        animation: slideDown 0.3s ease-out;
    }

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

    .nav-menu a {
        font-size: 15px;
        padding: 12px 15px;
        border-radius: 4px;
        transition: all 0.3s ease;
    }

    .nav-menu a:hover {
        background: var(--bg-grey);
        color: var(--gold);
    }

    .hamburger {
        display: flex;
        z-index: 1001;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    /* Hero section mobile optimizations */
    .hero {
        height: 60vh;
        min-height: 400px;
    }

    .hero-title {
        font-size: 28px;
        letter-spacing: 2px;
    }

    .hero-subtitle {
        font-size: 14px;
        letter-spacing: 1px;
    }

    .slider-dots {
        bottom: 60px;
        gap: 8px;
    }

    .slider-dots .dot {
        width: 10px;
        height: 10px;
    }

    .scroll-indicator {
        bottom: 30px;
    }

    .scroll-indicator span {
        height: 30px;
    }

    /* Section headers */
    .section-header {
        margin-bottom: 50px;
    }

    .section-header h2 {
        font-size: 28px;
        letter-spacing: 2px;
    }

    .section-header h2::after {
        width: 60px;
        bottom: -12px;
    }

    .section-header p {
        font-size: 14px;
        margin-top: 20px;
    }

    section {
        padding: 60px 0;
    }

    /* Product grid mobile */
    .product-grid,
    .scenario-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .product-card {
        padding: 0;
    }

    .product-image {
        height: 280px;
    }

    .product-info h3 {
        font-size: 24px;
        margin-bottom: 12px;
    }

    .product-info > p {
        font-size: 14px;
        margin-bottom: 15px;
    }

    .product-link {
        font-size: 14px;
    }

    /* Innovation section */
    .innovation-grid {
        grid-template-columns: 1fr;
        max-width: 100%;
    }

    .innovation-item {
        padding: 30px 25px;
    }

    .innovation-icon svg {
        width: 48px;
        height: 48px;
    }

    .innovation-item h3 {
        font-size: 18px;
        margin-bottom: 12px;
    }

    .innovation-item p {
        font-size: 14px;
    }

    /* Application scenarios */
    .scenario-item {
        border-radius: 4px;
    }

    .scenario-image {
        height: 250px;
    }

    .scenario-content {
        padding: 25px 20px;
    }

    .scenario-content h3 {
        font-size: 18px;
        margin-bottom: 8px;
    }

    .scenario-title-en {
        font-size: 12px;
        margin-bottom: 10px;
    }

    .scenario-content p {
        font-size: 13px;
    }

    .applications .scenario-image {
        height: 200px;
    }

    .applications .scenario-content {
        padding: 25px 20px;
    }

    .applications .scenario-content h3 {
        font-size: 16px;
        margin-bottom: 10px;
    }

    .applications .scenario-content p {
        font-size: 14px;
    }

    /* Applications list for tablet */
    .applications-list {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 25px;
    }

    .application-item {
        padding: 35px;
    }

    .application-item h3 {
        font-size: 20px;
    }

    .application-item p {
        font-size: 14px;
    }

    /* Applications section */
    .applications-list {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .application-item {
        padding: 25px;
        border-radius: 8px;
    }

    .application-item h3 {
        font-size: 18px;
        margin-bottom: 15px;
    }

    .application-item h3::before {
        width: 28px;
        height: 28px;
    }

    .application-item p {
        font-size: 14px;
        line-height: 1.8;
    }

    /* About section */
    .about-brand {
        padding: 60px 0;
    }

    .about-brand-content h2 {
        font-size: 22px;
        line-height: 1.5;
        margin-bottom: 25px;
    }

    .about-brand-content p {
        font-size: 15px;
        line-height: 1.8;
    }

    .about-text h2 {
        font-size: 28px;
        margin-bottom: 20px;
    }

    .lead {
        font-size: 16px;
        margin-bottom: 30px !important;
    }

    .about-block {
        padding: 25px 20px;
    }

    .about-block h3 {
        font-size: 18px;
        margin-bottom: 12px;
    }

    .about-block p {
        font-size: 14px;
        line-height: 1.8;
    }

    .stats {
        flex-direction: column;
        gap: 25px;
        margin-top: 30px;
    }

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

    .stat-number {
        font-size: 36px;
    }

    .stat-label {
        font-size: 13px;
    }

    .about-image {
        height: 300px;
    }

    /* Contact section */
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .contact-item {
        padding: 25px;
    }

    .contact-item h3 {
        font-size: 16px;
    }

    .contact-item p {
        font-size: 14px;
    }

    .email-signup {
        padding: 30px 25px;
    }

    .email-signup h3 {
        font-size: 18px;
    }

    .email-signup p {
        font-size: 14px;
    }

    .email-form {
        flex-direction: column;
        gap: 12px;
    }

    .email-form input {
        padding: 12px 15px;
        font-size: 14px;
    }

    .email-form button {
        padding: 12px 25px;
        font-size: 13px;
        width: 100%;
    }

    /* Footer mobile */
    .footer {
        padding: 50px 0 30px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }

    .footer-logo img {
        height: 30px;
    }

    .footer-section h4 {
        font-size: 13px;
        margin-bottom: 15px;
    }

    .footer-section p {
        font-size: 13px;
    }

    .footer-section ul {
        justify-content: center;
        gap: 10px 20px;
    }

    .footer-section ul li a {
        font-size: 13px;
    }

    .social-links {
        justify-content: center;
        gap: 10px;
    }

    .social-links a {
        padding: 8px 16px;
        font-size: 12px;
    }

    .footer-bottom {
        padding-top: 25px;
    }

    .footer-bottom p {
        font-size: 11px;
    }

    /* Button mobile adjustments */
    .btn {
        padding: 12px 30px;
        font-size: 13px;
        letter-spacing: 1px;
    }
}

/* Extra small mobile devices */
@media (max-width: 480px) {
    .hero {
        height: 50vh;
        min-height: 350px;
    }

    .hero-title {
        font-size: 24px;
        letter-spacing: 1px;
    }

    .hero-subtitle {
        font-size: 13px;
    }

    .section-header h2 {
        font-size: 24px;
    }

    .product-image {
        height: 240px;
    }

    .product-info h3 {
        font-size: 20px;
    }

    .innovation-item {
        padding: 25px 20px;
    }

    .application-item {
        padding: 20px;
    }

    .about-brand-content h2 {
        font-size: 18px;
    }

    .container {
        padding: 0 12px;
    }

    section {
        padding: 50px 0;
    }

    .product-card,
    .innovation-item,
    .application-item {
        box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
    }
}

/* Mobile-First Enhancements */
/* Better touch targets and interactions */
@media (max-width: 768px) {
    /* Improve touch feedback */
    .product-card:active,
    .scenario-item:active,
    .innovation-item:active {
        transform: scale(0.98);
        transition: transform 0.1s ease;
    }

    /* Larger touch targets for mobile */
    .slider-dots .dot {
        min-width: 44px;
        min-height: 44px;
        width: 12px;
        height: 12px;
    }

    /* Smooth scrolling for mobile */
    html {
        scroll-behavior: smooth;
        -webkit-overflow-scrolling: touch;
    }

    /* Prevent text selection on touch */
    .nav-menu a,
    .product-card,
    .scenario-item {
        -webkit-user-select: none;
        user-select: none;
    }

    /* Better button sizing for touch */
    .btn,
    button,
    .email-form button {
        min-height: 44px;
        min-width: 44px;
    }

    /* Safe area for iOS notched devices */
    @supports (padding: max(0px)) {
        .navbar {
            padding-top: max(0px, env(safe-area-inset-top));
        }

        body {
            padding-left: max(0px, env(safe-area-inset-left));
            padding-right: max(0px, env(safe-area-inset-right));
        }
    }
}

/* Landscape mobile optimizations */
@media (max-width: 768px) and (orientation: landscape) {
    .hero {
        height: 100vh;
        min-height: 400px;
    }

    section {
        padding: 40px 0;
    }

    .section-header {
        margin-bottom: 30px;
    }
}

/* Print styles */
@media print {
    .navbar,
    .hamburger,
    .slider-dots,
    .scroll-indicator,
    .footer {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    .product-card,
    .scenario-item {
        page-break-inside: avoid;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
    }

    .product-card,
    .scenario-item {
        border: 2px solid var(--black);
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

/* Dark mode support (optional) */
@media (prefers-color-scheme: dark) {
    /* Uncomment to enable dark mode
    :root {
        --white: #1A1A1A;
        --black: #FFFFFF;
        --bg-grey: #2D2D2D;
        --bg-light: #252525;
        --dark-grey: #E0E0E0;
        --medium-grey: #B0B0B0;
        --light-grey: #808080;
        --border-color: #404040;
    }

    body {
        background: var(--dark-grey);
        color: var(--white);
    }

    .navbar {
        background: rgba(26, 26, 26, 0.95);
    }

    .nav-menu a {
        color: var(--white);
    }

    .product-card,
    .innovation-item,
    .scenario-item {
        background: var(--bg-grey);
    }

    .contact-item,
    .email-signup {
        background: var(--bg-grey);
    }
    */
}