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

:root {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --accent-color: #e74c3c;
    --light-bg: #ecf0f1;
    --dark-text: #2c3e50;
    --light-text: #7f8c8d;
    --white: #ffffff;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

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

.navbar {
    background-color: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.logo-icon {
    font-size: 2rem;
}

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

.nav-menu a {
    text-decoration: none;
    color: var(--dark-text);
    font-weight: 500;
    transition: var(--transition);
}

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

.lang-switch button {
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 8px 16px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
}

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

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

.hero-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    animation: fadeInUp 1.2s ease;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background-color: var(--light-bg);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

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

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

.btn-light:hover {
    background-color: var(--light-bg);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--secondary-color);
}

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

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

.feature-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

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

.feature-card h3 {
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

.feature-card p {
    color: var(--light-text);
}

.services-preview {
    padding: 80px 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.service-card {
    background-color: var(--light-bg);
    padding: 2rem;
    border-radius: 10px;
    transition: var(--transition);
}

.service-card:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: scale(1.05);
}

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

.service-card h3 {
    margin-bottom: 1rem;
}

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

.cta {
    background: linear-gradient(135deg, var(--accent-color), #c0392b);
    color: var(--white);
    padding: 80px 0;
    text-align: center;
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.footer {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 50px 0 20px;
}

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

.footer-col h4 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

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

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

.footer-col a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-col a:hover {
    opacity: 1;
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.7;
}

.page-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 60px 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.services-detail {
    padding: 80px 0;
}

.service-detail-card {
    background-color: var(--light-bg);
    padding: 2.5rem;
    border-radius: 10px;
    margin-bottom: 2rem;
}

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

.service-detail-card h2 {
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.service-detail-card p {
    color: var(--light-text);
    margin-bottom: 1.5rem;
}

.service-detail-card ul {
    list-style: none;
    padding-left: 0;
}

.service-detail-card ul li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.service-detail-card ul li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.about-content {
    padding: 80px 0;
}

.about-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4rem;
}

.about-intro h2 {
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.about-mission {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.mission-card {
    background-color: var(--light-bg);
    padding: 2rem;
    border-radius: 10px;
}

.mission-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.about-values {
    margin-bottom: 4rem;
}

.about-values h2 {
    text-align: center;
    color: var(--secondary-color);
    margin-bottom: 2rem;
}

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

.value-item {
    text-align: center;
    padding: 1.5rem;
}

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

.value-item h4 {
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.about-expertise {
    margin-bottom: 4rem;
}

.about-expertise h2 {
    text-align: center;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.about-expertise > p {
    text-align: center;
    margin-bottom: 2rem;
}

.expertise-list {
    max-width: 800px;
    margin: 0 auto;
}

.expertise-item {
    background-color: var(--light-bg);
    padding: 1rem 1.5rem;
    margin-bottom: 1rem;
    border-radius: 5px;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.check-icon {
    color: var(--primary-color);
    font-size: 1.5rem;
    font-weight: bold;
}

.company-info {
    background-color: var(--light-bg);
    padding: 2rem;
    border-radius: 10px;
}

.company-info h2 {
    text-align: center;
    color: var(--secondary-color);
    margin-bottom: 2rem;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.info-item strong {
    color: var(--secondary-color);
}

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

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
}

.contact-info h2 {
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    margin: 2rem 0;
}

.contact-icon {
    font-size: 2rem;
}

.contact-item h4 {
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.contact-form-wrapper {
    background-color: var(--light-bg);
    padding: 2rem;
    border-radius: 10px;
}

.contact-form-wrapper h2 {
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
}

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

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: inherit;
    font-size: 1rem;
}

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

.business-hours {
    background-color: var(--light-bg);
    padding: 60px 0;
}

.business-hours h2 {
    text-align: center;
    color: var(--secondary-color);
    margin-bottom: 2rem;
}

.hours-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.hours-item {
    background-color: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow);
}

.hours-item strong {
    display: block;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.legal-content {
    padding: 60px 0;
}

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

.legal-text h2 {
    color: var(--secondary-color);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.legal-text h3 {
    color: var(--primary-color);
    margin-top: 1.5rem;
    margin-bottom: 0.8rem;
}

.legal-text p {
    margin-bottom: 1rem;
    line-height: 1.8;
}

.legal-text ul {
    margin-bottom: 1rem;
    padding-left: 2rem;
}

.legal-text ul li {
    margin-bottom: 0.5rem;
}

.contact-box {
    background-color: var(--light-bg);
    padding: 1.5rem;
    border-radius: 10px;
    margin-top: 1rem;
}

.contact-box p {
    margin-bottom: 0.5rem;
}

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

@media (max-width: 768px) {
    .nav-menu {
        flex-direction: column;
        gap: 1rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section-title {
        font-size: 2rem;
    }

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