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

:root {
    --primary-color: #1a365d;
    --primary-dark: #0d2137;
    --primary-light: #2c5282;
    --accent-color: #ed8936;
    --accent-light: #f6ad55;
    --bg-dark: #0d1117;
    --bg-gray: #161b22;
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --border-color: #2d3748;
    --gradient-primary: linear-gradient(135deg, #1a365d 0%, #2c5282 100%);
    --gradient-accent: linear-gradient(135deg, #ed8936 0%, #f6ad55 100%);
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
}

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

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(13, 17, 23, 0.95);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(13, 17, 23, 0.98);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 2px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-accent);
}

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

.menu-btn span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

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

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

.menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #0d1117 0%, #1a365d 50%, #0d1117 100%);
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(237, 137, 54, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(44, 82, 130, 0.1) 0%, transparent 50%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 0 20px;
    max-width: 800px;
}

.hero-content h1 {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #ffffff 0%, #a0aec0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 24px;
    font-weight: 500;
    color: var(--accent-color);
    margin-bottom: 20px;
    letter-spacing: 4px;
}

.hero-description {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 14px 32px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background: var(--gradient-accent);
    color: var(--bg-dark);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(237, 137, 54, 0.3);
}

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

.btn-secondary:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.company-overview {
    padding: 80px 0;
    background: var(--bg-gray);
}

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

.overview-text h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.overview-text p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.8;
}

.read-more {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.read-more:hover {
    color: var(--accent-light);
}

.overview-stats {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.stat-item {
    text-align: center;
    padding: 30px;
    background: rgba(26, 54, 93, 0.2);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.products-showcase {
    padding: 80px 0;
}

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

.section-header h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.section-header p {
    font-size: 16px;
    color: var(--text-secondary);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background: var(--bg-gray);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.product-image {
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(26, 54, 93, 0.3) 0%, rgba(44, 82, 130, 0.2) 100%);
}

.product-icon {
    width: 80px;
    height: 80px;
    color: var(--accent-color);
    transition: transform 0.3s ease;
}

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

.product-info {
    padding: 24px;
}

.product-info h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.product-info p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}

.product-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    transition: color 0.3s ease;
}

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

.features {
    padding: 80px 0;
    background: var(--bg-gray);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    text-align: center;
    padding: 40px 24px;
    background: rgba(13, 17, 23, 0.5);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.feature-card:hover {
    border-color: var(--accent-color);
    transform: translateY(-3px);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    color: var(--accent-color);
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

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

.partners {
    padding: 80px 0;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
}

.partner-item {
    padding: 24px;
    background: var(--bg-gray);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    text-align: center;
    font-size: 16px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.partner-item:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.footer {
    padding: 60px 0 30px;
    background: var(--primary-dark);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    text-decoration: none;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

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

.footer-section p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    font-size: 14px;
    color: var(--text-secondary);
}

.page-content {
    padding: 120px 0 80px;
}

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

.page-header h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.page-header p {
    font-size: 16px;
    color: var(--text-secondary);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-content h2 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
    margin-top: 40px;
}

.about-content h2:first-child {
    margin-top: 0;
}

.about-content p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    padding: 30px 0;
    display: flex;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-content {
    width: 45%;
    padding: 24px;
    background: var(--bg-gray);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.timeline-date {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 8px;
}

.timeline-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.timeline-desc {
    font-size: 14px;
    color: var(--text-secondary);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.team-member {
    text-align: center;
    padding: 24px;
    background: var(--bg-gray);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.team-photo {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: var(--gradient-primary);
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: var(--text-primary);
}

.team-member h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.team-member p {
    font-size: 14px;
    color: var(--text-secondary);
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.culture-item {
    text-align: center;
    padding: 40px 24px;
    background: var(--bg-gray);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.culture-item h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: 16px;
}

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

.products-container {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 40px;
}

.product-categories {
    position: sticky;
    top: 120px;
}

.product-categories h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.product-categories ul {
    list-style: none;
}

.product-categories ul li {
    margin-bottom: 12px;
}

.product-categories ul li a {
    display: block;
    padding: 12px 16px;
    text-decoration: none;
    color: var(--text-secondary);
    border-radius: 6px;
    transition: all 0.3s ease;
}

.product-categories ul li a:hover,
.product-categories ul li a.active {
    background: var(--accent-color);
    color: var(--bg-dark);
}

.product-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.product-item {
    background: var(--bg-gray);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all 0.3s ease;
}

.product-item:hover {
    transform: translateY(-3px);
    border-color: var(--accent-color);
}

.product-item-image {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(26, 54, 93, 0.3) 0%, rgba(44, 82, 130, 0.2) 100%);
}

.product-item-icon {
    width: 80px;
    height: 80px;
    color: var(--accent-color);
}

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

.product-item-info h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

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

.news-container {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.news-item {
    background: var(--bg-gray);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    padding: 24px;
    transition: all 0.3s ease;
}

.news-item:hover {
    border-color: var(--accent-color);
}

.news-date {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.news-item h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

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

.news-sidebar {
    position: sticky;
    top: 120px;
}

.news-sidebar h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.news-categories {
    list-style: none;
    margin-bottom: 30px;
}

.news-categories li {
    margin-bottom: 10px;
}

.news-categories li a {
    text-decoration: none;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

.news-categories li a:hover {
    color: var(--accent-color);
}

.hot-news {
    list-style: none;
}

.hot-news li {
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.hot-news li:last-child {
    border-bottom: none;
}

.hot-news li a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 14px;
    transition: color 0.3s ease;
}

.hot-news li a:hover {
    color: var(--accent-color);
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    padding: 24px;
    background: var(--bg-gray);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.contact-item h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.contact-item p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.contact-form {
    background: var(--bg-gray);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    padding: 30px;
}

.contact-form h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--text-primary);
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

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

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

.contact-map {
    margin-top: 40px;
    height: 400px;
    background: var(--bg-gray);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-map p {
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--bg-dark);
        flex-direction: column;
        padding: 40px 20px;
        transition: left 0.3s ease;
    }

    .nav-links.active {
        left: 0;
    }

    .nav-links li {
        margin-bottom: 20px;
    }

    .menu-btn {
        display: flex;
    }

    .hero-content h1 {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .overview-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .products-container {
        grid-template-columns: 1fr;
    }

    .news-container {
        grid-template-columns: 1fr;
    }

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

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        flex-direction: column !important;
        padding-left: 50px;
    }

    .timeline-content {
        width: 100%;
    }
}