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

:root {
    --primary-color: #2563eb;
    --secondary-color: #7c3aed;
    --accent-color: #06b6d4;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --gray-color: #64748b;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --shadow: 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);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: #ffffff;
}

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

.navbar {
    background-color: #ffffff;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

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

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

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

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
}

.lang-toggle {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.3s ease;
}

.lang-toggle:hover {
    background-color: var(--secondary-color);
}

.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 6rem 0;
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

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

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

.features {
    padding: 5rem 0;
    background-color: var(--light-color);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.section-description {
    text-align: center;
    font-size: 1.125rem;
    color: var(--gray-color);
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background-color: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.feature-card p {
    color: var(--gray-color);
    line-height: 1.7;
}

.industries {
    padding: 5rem 0;
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.industry-item {
    background-color: var(--light-color);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
    transition: all 0.3s ease;
}

.industry-item:hover {
    background-color: white;
    box-shadow: var(--shadow);
    border-left-color: var(--secondary-color);
}

.industry-item h4 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.industry-item p {
    color: var(--gray-color);
    font-size: 0.9rem;
}

.stats {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.125rem;
    opacity: 0.9;
}

.cta {
    padding: 5rem 0;
    text-align: center;
    background-color: var(--light-color);
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.cta p {
    font-size: 1.125rem;
    color: var(--gray-color);
    margin-bottom: 2rem;
}

.footer {
    background-color: var(--dark-color);
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-col h3,
.footer-col h4 {
    margin-bottom: 1rem;
    color: white;
}

.footer-col p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    line-height: 1.8;
}

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

.footer-col ul li {
    margin-bottom: 0.5rem;
}

.footer-col a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-col a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.page-header p {
    font-size: 1.125rem;
    opacity: 0.9;
}

.content-section {
    padding: 4rem 0;
}

.content-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
}

.content-main h2 {
    font-size: 2rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

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

.content-main p {
    color: var(--gray-color);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.info-card {
    background-color: var(--light-color);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.info-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.info-card p {
    color: var(--gray-color);
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
    line-height: 1.6;
}

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

.cert-list li {
    padding: 0.5rem 0;
    color: var(--gray-color);
    border-bottom: 1px solid var(--border-color);
}

.cert-list li:last-child {
    border-bottom: none;
}

.values-list {
    display: grid;
    gap: 1.5rem;
    margin-top: 2rem;
}

.value-item {
    background-color: var(--light-color);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

.value-item h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.value-item p {
    color: var(--gray-color);
}

.team-section {
    padding: 4rem 0;
    background-color: var(--light-color);
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.expertise-card {
    background-color: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.expertise-card:hover {
    transform: translateY(-5px);
}

.expertise-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.expertise-card p {
    color: var(--gray-color);
}

.services-section {
    padding: 4rem 0;
}

.service-detail {
    margin-bottom: 4rem;
    padding: 2rem;
    background-color: var(--light-color);
    border-radius: 12px;
}

.service-icon-large {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.service-detail h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.service-detail p {
    color: var(--gray-color);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.service-features {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.service-features li {
    padding: 0.75rem 1rem;
    background-color: white;
    border-radius: 6px;
    color: var(--dark-color);
    border-left: 3px solid var(--primary-color);
}

.contact-section {
    padding: 4rem 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.contact-info p {
    color: var(--gray-color);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.contact-methods {
    display: grid;
    gap: 2rem;
}

.contact-method {
    background-color: var(--light-color);
    padding: 1.5rem;
    border-radius: 8px;
}

.method-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.contact-method h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.contact-method p {
    color: var(--gray-color);
    margin-bottom: 0.5rem;
}

.contact-method a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.contact-method a:hover {
    text-decoration: underline;
}

.contact-form-wrapper {
    background-color: var(--light-color);
    padding: 2rem;
    border-radius: 12px;
}

.contact-form-wrapper h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--dark-color);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

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

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

.map-section {
    padding: 4rem 0;
    background-color: var(--light-color);
}

.map-placeholder {
    background-color: white;
    padding: 4rem;
    border-radius: 12px;
    text-align: center;
    margin-top: 2rem;
    border: 2px dashed var(--border-color);
}

.map-placeholder p {
    color: var(--gray-color);
    font-size: 1.125rem;
}

.legal-content {
    padding: 4rem 0;
}

.legal-text {
    max-width: 900px;
    margin: 0 auto;
}

.legal-text h2 {
    font-size: 1.75rem;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.legal-text h2:first-child {
    margin-top: 0;
}

.legal-text p {
    color: var(--gray-color);
    margin-bottom: 1.5rem;
    line-height: 1.9;
    text-align: justify;
}

.legal-text ul {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

.legal-text li {
    color: var(--gray-color);
    margin-bottom: 0.5rem;
    line-height: 1.8;
}

@media (max-width: 968px) {
    .nav-menu {
        display: none;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 640px) {
    .hero {
        padding: 3rem 0;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
}