:root {
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f7f7f7;
    --color-bg-tertiary: #f2f2f2;
    
    --color-text-primary: #222222;
    --color-text-secondary: #6a6a6a;
    --color-text-tertiary: #929292;
    --color-text-disabled: rgba(0, 0, 0, 0.24);
    
    --color-brand-primary: #058376;
    --color-brand-secondary: #09756a;
    --color-brand-hover: #0a695f;
    
    --color-border: #ebebeb;
    --color-border-hover: #d1d1d1;
    
    --shadow-card: rgba(0, 0, 0, 0.02) 0px 0px 0px 1px,
                  rgba(0, 0, 0, 0.04) 0px 2px 6px,
                  rgba(0, 0, 0, 0.10) 0px 4px 8px;
    --shadow-card-hover: rgba(0, 0, 0, 0.08) 0px 4px 12px,
                        rgba(0, 0, 0, 0.12) 0px 8px 24px;
    --shadow-button-hover: rgba(0, 0, 0, 0.08) 0px 4px 12px;
    
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 32px;
    --radius-full: 50%;
    
    --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.57;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
}

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

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

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

ul {
    list-style: none;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    transition: box-shadow var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-card);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 32px;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-img {
    height: 44px;
    width: auto;
    object-fit: contain;
}

.logo-text h1 {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-brand-primary);
    letter-spacing: 2px;
    margin-bottom: 2px;
    line-height: 1.2;
}

.tagline {
    font-size: 11px;
    font-weight: 500;
    color: var(--color-text-secondary);
    letter-spacing: -0.1px;
}

.nav-list {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-primary);
    position: relative;
    padding: 8px 4px;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-brand-primary);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

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

.nav-link:hover::after,
.nav-link.active::after {
    transform: scaleX(1);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 28px;
    height: 28px;
    padding: 4px;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 1px;
    transition: all var(--transition-base);
    transform-origin: center;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 0;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('images/manufacturing.jpg') no-repeat center center;
    background-size: cover;
    transform: scale(1.05);
    animation: heroZoom 20s ease-in-out infinite alternate;
}

@keyframes heroZoom {
    0% { transform: scale(1); }
    100% { transform: scale(1.05); }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        135deg,
        rgba(34, 34, 34, 0.92) 0%,
        rgba(34, 34, 34, 0.85) 40%,
        rgba(34, 34, 34, 0.88) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #fff;
    max-width: 800px;
    padding: 120px 20px 80px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(1, 94, 85, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(3, 130, 125, 0.25);
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 32px;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.2s;
}

.badge-icon {
    font-size: 16px;
}

.hero-title {
    font-size: clamp(42px, 7vw, 72px);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.title-line {
    display: block;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.title-line:nth-child(1) {
    animation-delay: 0.5s;
}

.title-line:nth-child(2) {
    animation-delay: 0.7s;
}

.title-line.highlight {
    color: var(--color-brand-primary);
}

.hero-subtitle {
    font-size: clamp(18px, 2.5vw, 24px);
    font-weight: 400;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 48px;
    line-height: 1.5;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.9s;
}

.subtitle-line {
    display: block;
}

.hero-cta-group {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 1.1s;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--color-text-primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--color-brand-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-button-hover);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
    transform: translateY(-2px);
}

.btn-submit {
    width: 100%;
    padding: 16px 32px;
    font-size: 16px;
}

.btn-submit .btn-loading {
    display: none;
}

.btn-submit.loading .btn-text {
    display: none;
}

.btn-submit.loading .btn-loading {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-submit.loading::before {
    content: '';
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 8px;
}

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

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.6);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 1px;
    z-index: 2;
    animation: fadeIn 1s ease forwards;
    animation-delay: 1.5s;
    opacity: 0;
}

.scroll-mouse {
    width: 24px;
    height: 38px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.scroll-wheel {
    width: 3px;
    height: 8px;
    background: var(--color-brand-primary);
    border-radius: 2px;
    animation: scrollWheel 2s ease-in-out infinite;
}

@keyframes scrollWheel {
    0%, 100% { 
        opacity: 1; 
        transform: translateY(0); 
    }
    50% { 
        opacity: 0.3; 
        transform: translateY(8px); 
    }
}

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

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--color-brand-primary);
    margin-bottom: 16px;
    padding: 8px 16px;
    background: rgba(3, 156, 152, 0.08);
    border-radius: 50px;
}

.section-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-description {
    font-size: 17px;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto 32px;
    line-height: 1.6;
}

.divider {
    width: 56px;
    height: 3px;
    background: var(--color-brand-primary);
    margin: 0 auto;
    border-radius: 2px;
}

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

.about-intro {
    max-width: 900px;
    margin: 0 auto 60px;
}

.intro-text h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.intro-text p {
    font-size: 16px;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.intro-text strong {
    color: var(--color-brand-primary);
    font-weight: 600;
}

/* Qualifications */
.qualifications {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 60px;
}

.qualification-card {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 28px 32px;
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
}

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

.qualification-icon {
    font-size: 42px;
    min-width: 60px;
    text-align: center;
}

.qualification-content h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 6px;
    letter-spacing: -0.01em;
}

.qualification-content p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* Company Stats */
.company-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 60px;
}

.stat-card {
    text-align: center;
    padding: 40px 24px;
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
}

.stat-icon {
    font-size: 36px;
    margin-bottom: 16px;
}

.stat-number {
    font-size: 42px;
    font-weight: 700;
    color: var(--color-brand-primary);
    letter-spacing: -0.02em;
    line-height: 1;
    display: inline;
}

.stat-unit {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-brand-primary);
    margin-left: 4px;
}

.stat-label {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-top: 12px;
    font-weight: 500;
}

/* Features */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-bottom: 60px;
}

.feature-card {
    text-align: center;
    padding: 40px 28px;
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
}

.feature-icon-wrapper {
    width: 72px;
    height: 72px;
    margin: 0 auto 24px;
    background: rgba(3, 165, 152, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.feature-card:hover .feature-icon-wrapper {
    background: var(--color-brand-primary);
    transform: scale(1.1);
}

.feature-icon {
    font-size: 32px;
    transition: transform var(--transition-base);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.feature-card h4 {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.feature-card p {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Certificates */
.certificates-section {
    margin-top: 60px;
}

.certificates-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text-primary);
    text-align: center;
    margin-bottom: 32px;
    letter-spacing: -0.01em;
}

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

.certificate-card {
    position: relative;
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    cursor: pointer;
    transition: all var(--transition-base);
}

.certificate-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
}

.certificate-card img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.certificate-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.75), transparent);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    opacity: 0;
    transform: translateY(10px);
    transition: all var(--transition-base);
}

.certificate-card:hover .certificate-overlay {
    opacity: 1;
    transform: translateY(0);
}

/* Equipment Section */
.equipment {
    background: var(--color-bg-primary);
}

.equipment-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    margin-bottom: 60px;
}

.equipment-card {
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
}

.equipment-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
}

.equipment-image {
    position: relative;
    height: 240px;
    overflow: hidden;
}

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

.equipment-card:hover .equipment-image img {
    transform: scale(1.08);
}

.equipment-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--color-brand-primary);
    color: #fff;
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.equipment-content {
    padding: 28px 32px;
}

.equipment-content h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.equipment-list {
    list-style: none;
}

.equipment-list li {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.8;
    padding-left: 20px;
    position: relative;
}

.equipment-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-brand-primary);
    font-weight: 700;
}

/* Process Section */
.process-section {
    background: var(--color-text-primary);
    padding: 56px 48px;
    border-radius: var(--radius-xl);
    margin-top: 40px;
}

.process-title {
    font-size: 26px;
    font-weight: 700;
    color: #fff;
    text-align: center;
    margin-bottom: 48px;
    letter-spacing: -0.01em;
}

.process-flow {
    display: flex;
    justify-content: space-between;
    position: relative;
    gap: 16px;
}

.process-step {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
}

.step-number {
    width: 56px;
    height: 56px;
    background: var(--color-brand-primary);
    color: #fff;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
    transition: all var(--transition-base);
    position: relative;
    z-index: 2;
}

.process-step:hover .step-number {
    transform: scale(1.1);
    box-shadow: 0 8px 24px rgba(3, 156, 152, 0.35);
}

.step-connector {
    position: absolute;
    top: 28px;
    left: calc(50% + 30px);
    width: calc(100% - 60px);
    height: 2px;
    background: rgba(255, 255, 255, 0.2);
}

.step-content h4 {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

.step-content p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.5;
}

/* Products Section */
.products {
    background: var(--color-bg-secondary);
}

.products-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 48px;
}

.filter-btn {
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-secondary);
    background: var(--color-bg-primary);
    border: 1.5px solid var(--color-border);
    border-radius: 50px;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    border-color: var(--color-text-primary);
    color: var(--color-text-primary);
}

.filter-btn.active {
    background: var(--color-text-primary);
    color: #fff;
    border-color: var(--color-text-primary);
}

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

.product-card {
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
}

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

.product-card.hidden {
    display: none;
}

.product-image {
    position: relative;
    height: 200px;
    overflow: hidden;
    background: var(--color-bg-tertiary);
}

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

.product-card:hover .product-image img {
    transform: scale(1.08);
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(34, 34, 34, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.product-card:hover .product-overlay {
    opacity: 1;
}

.product-view-btn {
    padding: 10px 24px;
    background: var(--color-brand-primary);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.product-view-btn:hover {
    background: var(--color-brand-hover);
    transform: scale(1.05);
}

.product-info {
    padding: 20px 24px;
}

.product-info h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 6px;
    letter-spacing: -0.01em;
}

.product-info p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* Clients Section */
.clients {
    background: var(--color-bg-primary);
}

.clients-section {
    max-width: 1280px;
    margin: 0 auto;
}

.clients-group {
    margin-bottom: 56px;
}

.clients-subtitle {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-text-primary);
    text-align: center;
    margin-bottom: 32px;
    letter-spacing: -0.01em;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.subtitle-icon {
    font-size: 26px;
}

.clients-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}

.client-item {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    padding: 24px 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 110px;
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

.client-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--color-border);
    background: var(--color-bg-primary);
}

.client-item img {
    max-width: 100%;
    max-height: 55px;
    object-fit: contain;
    filter: grayscale(0%);
    opacity: 1;
    transition: all var(--transition-base);
}

.client-item:hover img {
    filter: grayscale(0%);
    opacity: 1;
    transform: scale(1.18);
}

/* Contact Section */
.contact {
    background: var(--color-bg-secondary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 35px;
    padding: 24px 38px;
    min-height: 113px;
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-base);
}

.contact-card:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-card-hover);
}

.contact-icon {
    width: 52px;
    height: 52px;
    background: rgba(3, 156, 152, 0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--color-brand-primary);
    transition: all var(--transition-base);
}

.contact-card:hover .contact-icon {
    background: var(--color-brand-primary);
    color: #fff;
}

.contact-details h4 {
    font-size: 17px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 6px;
    letter-spacing: -0.01em;
}

.contact-details p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--color-bg-primary);
    padding: 40px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-card);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: 0.01em;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    font-size: 15px;
    font-family: var(--font-family);
    color: var(--color-text-primary);
    background: var(--color-bg-secondary);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    outline: none;
    transition: all var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-tertiary);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-brand-primary);
    background: var(--color-bg-primary);
    box-shadow: 0 0 0 3px rgba(3, 156, 152, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-row {
    display: flex;
    gap: 16px;
    align-items: end;
}

.form-row-top {
    display: flex;
    gap: 16px;
}

.form-row-top .form-group {
    flex: 1;
}

.captcha-group {
    flex: 1;
    max-width: 200px;
}

.captcha-input {
    width: 100% !important;
}

.captcha-display {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 120px;
    height: 50px;
    padding: 0 20px;
    background: var(--color-text-primary);
    color: var(--color-brand-primary);
    font-family: 'Courier New', monospace;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 6px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    user-select: none;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
}

.captcha-display:hover {
    border-color: var(--color-brand-primary);
    transform: scale(1.02);
}

/* Footer */
.footer {
    background: var(--color-text-primary);
    color: #fff;
    padding: 64px 0 32px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 64px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 16px;
}

.footer-logo-img {
    height: 52px;
    width: auto;
}

.footer-logo-text h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 6px;
    letter-spacing: -0.01em;
}

.footer-logo-text p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
}

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

.footer-column h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-column ul li {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer-column a:hover {
    color: var(--color-brand-primary);
}

.footer-bottom {
    padding-top: 32px;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 10000;
    justify-content: center;
    align-items: center;
    padding: 40px;
}

.lightbox.active {
    display: flex;
}

.lightbox-close {
    position: absolute;
    top: 24px;
    right: 32px;
    color: #fff;
    font-size: 48px;
    cursor: pointer;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
}

.lightbox-close:hover {
    background: var(--color-brand-primary);
    transform: rotate(90deg);
}

.lightbox img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    border-radius: var(--radius-md);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: lightboxFadeIn 0.3s ease;
}

@keyframes lightboxFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

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

/* Responsive Design */

@media (max-width: 1440px) {
    .products-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .clients-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

@media (max-width: 1200px) {
    .container {
        padding: 0 24px;
    }
    
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .clients-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .company-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

@media (max-width: 992px) {
    .section {
        padding: 96px 0;
    }
    
    .nav {
        position: fixed;
        top: 0;
        right: -320px;
        width: 300px;
        height: 100vh;
        background: var(--color-bg-primary);
        box-shadow: -8px 0 32px rgba(0, 0, 0, 0.15);
        transition: right var(--transition-base);
        padding: 96px 32px 32px;
        z-index: 999;
    }

    .nav.active {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        gap: 0;
    }

    .nav-link {
        display: block;
        padding: 16px 0;
        font-size: 17px;
        border-bottom: 1px solid var(--color-border);
    }

    .nav-link::after {
        display: none;
    }

    .menu-toggle {
        display: flex;
        z-index: 1001;
    }

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

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

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero-title {
        font-size: clamp(36px, 8vw, 56px);
    }
    
    .equipment-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .process-flow {
        flex-wrap: wrap;
        gap: 32px;
    }
    
    .step-connector {
        display: none;
    }
    
    .clients-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .certificate-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    
    .section {
        padding: 80px 0;
    }
    
    .section-title {
        font-size: clamp(28px, 6vw, 38px);
    }
    
    .header .container {
        padding: 12px 20px;
        height: 64px;
    }
    
    .logo-img {
        height: 38px;
    }
    
    .logo-text h1 {
        font-size: 18px;
    }
    
    .tagline {
        font-size: 10px;
    }
    
    .hero-content {
        padding: 100px 16px 60px;
    }
    
    .hero-badge {
        font-size: 12px;
        padding: 8px 16px;
    }
    
    .hero-subtitle {
        font-size: 16px;
        margin-bottom: 32px;
    }
    
    .hero-cta-group {
        flex-direction: column;
        gap: 12px;
    }
    
    .btn {
        width: 100%;
        padding: 14px 28px;
    }
    
    .scroll-indicator {
        display: none;
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .products-filter {
        gap: 8px;
    }
    
    .filter-btn {
        padding: 8px 18px;
        font-size: 13px;
    }
    
    .product-image {
        height: 160px;
    }
    
    .qualifications {
        grid-template-columns: 1fr;
    }
    
    .company-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .stat-card {
        padding: 28px 16px;
    }
    
    .stat-number {
        font-size: 32px;
    }
    
    .stat-icon {
        font-size: 28px;
    }
    
    .process-section {
        padding: 36px 24px;
    }
    
    .process-step {
        flex: 0 0 calc(50% - 16px);
    }
    
    .clients-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .client-item {
        min-height: 90px;
        padding: 16px 12px;
    }
    
    .client-item img {
        max-height: 45px;
    }
    
    .contact-form-wrapper {
        padding: 28px 24px;
    }
    
    .form-row {
        flex-direction: column;
        align-items: stretch;
    }
    
    .captcha-group {
        max-width: 100%;
    }
    
    .certificate-grid {
        grid-template-columns: 1fr;
    }
    
    .footer {
        padding: 48px 0 24px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .section {
        padding: 64px 0;
    }
    
    .section-header {
        margin-bottom: 48px;
    }
    
    .section-tag {
        font-size: 11px;
        padding: 6px 14px;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .intro-text h3 {
        font-size: 24px;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .company-stats {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 36px;
    }
    
    .process-step {
        flex: 0 0 100%;
    }
    
    .clients-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-card {
        padding: 20px;
    }
    
    .contact-icon {
        width: 46px;
        height: 46px;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }

/* Print Styles */
@media print {
    .header,
    .menu-toggle,
    .scroll-indicator,
    .lightbox {
        display: none !important;
    }
    
    .hero {
        min-height: auto;
        padding: 40px 0;
    }
    
    .section {
        padding: 40px 0;
    }
}