/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Roboto', 'Montserrat', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
    overflow-x: hidden;
}

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

/* Header Styles */
.header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo svg {
    height: 40px;
    width: auto;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1); /* 添加阴影效果 */
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.nav-list {
    display: flex;
    list-style: none;
}

.nav-item {
    margin: 0 10px;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 4px;
    transition: all 0.3s ease;
    position: relative;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1); /* 添加按钮阴影效果 */
}

.nav-link:hover, .nav-link.active {
    color: #1a73e8;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2); /* 悬浮时增强阴影效果 */
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    right: 0;
    height: 3px;
    background-color: #1a73e8;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section Styles */
.hero {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 100px 0;
    text-align: center;
}

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

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: #1a73e8;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: #555;
}

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

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 16px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1); /* 添加按钮阴影效果 */
}

.btn-primary {
    background-color: #1a73e8;
    color: white;
}

.btn-primary:hover {
    background-color: #1557b0;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(26, 115, 232, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: #1a73e8;
    border: 2px solid #1a73e8;
}

.btn-secondary:hover {
    background-color: #1a73e8;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(26, 115, 232, 0.3); /* 悬浮时增强阴影效果 */
}

/* Page Hero Section */
.page-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 120px 0 80px;
    text-align: center;
    color: white;
}

.page-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.page-subtitle {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto;
    opacity: 0.9;
}

/* Section Styles */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    color: #1a73e8;
}

.section-description {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
    color: #666;
    font-size: 1.1rem;
    line-height: 1.8;
}

/* Company Overview Section */
.company-overview {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.overview-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.highlight-item {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.highlight-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.highlight-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #1a73e8;
}

/* Statistics Section */
.statistics {
    padding: 80px 0;
    background-color: white;
}

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

.statistic-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 40px 30px;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.statistic-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

.statistic-number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1;
}

.statistic-label {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.statistic-description {
    font-size: 0.95rem;
    opacity: 0.9;
    line-height: 1.5;
}

/* Services Overview */
.services-overview {
    padding: 80px 0;
    background-color: #f8f9fa;
}

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

.service-card {
    background-color: white;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.service-icon {
    margin-bottom: 20px;
}

.service-icon img {
    height: 80px;
    width: auto;
}

.service-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #1a73e8;
}

.service-description {
    color: #666;
    line-height: 1.6;
}

/* Features Section */
.features {
    padding: 80px 0;
}

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

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

.feature-icon {
    margin-bottom: 20px;
}

.feature-icon img {
    height: 50px;
    width: auto;
    object-fit: cover;
    border-radius: 4px; /* 可选：添加圆角效果 */
}

.feature-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #1a73e8;
}

.feature-description {
    color: #666;
    line-height: 1.6;
}

/* Technology Preview Section */
.tech-preview {
    padding: 80px 0;
    background-color: #f8f9fa;
}

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

.tech-preview-item {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    text-align: center;
}

.tech-preview-item h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: #1a73e8;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
}

.tech-tag {
    background-color: #e8f0fe;
    color: #1a73e8;
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* Services Detail Section */
.services-detail {
    padding: 80px 0;
}

.services-detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.service-detail-card {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.service-detail-header {
    background-color: #1a73e8;
    padding: 20px;
    color: white;
    display: flex;
    align-items: center;
    gap: 15px;
}

.service-detail-icon {
    flex-shrink: 0;
}

.service-detail-icon img {
    height: 50px;
    width: auto;
}

.service-detail-title {
    font-size: 1.5rem;
    font-weight: 600;
}

.service-detail-content {
    padding: 25px;
}

.service-subtitle {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 20px 0 10px;
    color: #1a73e8;
}

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

.service-list li {
    padding: 8px 0;
    border-bottom: 1px solid #eee;
}

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

.service-list li:before {
    content: "✓";
    color: #1a73e8;
    font-weight: bold;
    margin-right: 10px;
}

/* Tech Stack Section */
.tech-stack {
    padding: 80px 0;
    background-color: #f8f9fa;
}

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

.tech-category {
    background-color: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.tech-category-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: #1a73e8;
    text-align: center;
}

.tech-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tech-item {
    background-color: #e8f0fe;
    color: #1a73e8;
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Team Overview */
.team-overview {
    padding: 80px 0;
}

.team-intro {
    text-align: center;
    max-width: 900px;
    margin: 0 auto 50px;
}

/* Team Centers */
.team-centers {
    padding: 80px 0;
    background-color: #f8f9fa;
}

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

.centers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.center-card {
    background-color: white;
    border-radius: 12px;
    padding: 35px;
    text-align: center;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.center-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.center-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #1a73e8, #667eea);
}

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

.center-icon svg,
.center-icon img {
    width: 70px;
    height: 70px;
}

.center-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #1a73e8;
    transition: color 0.3s ease;
}

.center-card:hover .center-title {
    color: #667eea;
}

.center-description {
    color: #666;
    line-height: 1.7;
    margin-bottom: 20px;
}

.center-features {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
}

.center-features span {
    background-color: #e8f0fe;
    color: #1a73e8;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.center-features span:hover {
    background-color: #1a73e8;
    color: white;
    transform: scale(1.05);
}

/* Team Members */
.team-members {
    padding: 80px 0;
    background-color: white;
}

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

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 35px;
    margin-top: 40px;
}

.team-member {
    background-color: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
}

.team-member:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.18);
}

.member-avatar {
    padding: 35px 0 25px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e8f0fe 100%);
}

.member-avatar img,
.member-avatar svg {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
}

.member-info {
    padding: 0 25px 35px;
}

.member-name {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: #333;
}

.member-title {
    color: #1a73e8;
    font-weight: 600;
    margin-bottom: 15px;
    font-size: 1rem;
}

.member-background {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.7;
    font-size: 0.95rem;
}

.member-expertise {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
}

.member-expertise span {
    background-color: #e8f0fe;
    color: #1a73e8;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.member-expertise span:hover {
    background-color: #1a73e8;
    color: white;
    transform: scale(1.05);
}

/* Team Values */
.team-values {
    padding: 80px 0;
    background-color: #f8f9fa;
}

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

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.value-item {
    text-align: center;
    padding: 35px;
    background-color: white;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
}

.value-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

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

.value-icon svg,
.value-icon img {
    width: 60px;
    height: 60px;
}

.value-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #1a73e8;
}

.value-description {
    color: #666;
    line-height: 1.7;
    font-size: 0.95rem;
}

/* Global Reach */
.global-reach {
    padding: 80px 0;
    background-color: white;
}

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

.companies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.company-item {
    display: flex;
    justify-content: center;
}

.company-item svg,
.company-item img {
    width: 100px;
    height: 100px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.company-item:hover svg,
.company-item:hover img {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

/* Contact Section */
.contact-info {
    padding: 80px 0;
    background-color: #f8f9fa;
}

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

.contact-card {
    background-color: white;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.contact-icon {
    margin-bottom: 20px;
}

.contact-icon img {
    height: 60px;
    width: auto;
}

.contact-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #1a73e8;
}

.contact-description {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.contact-link {
    color: #1a73e8;
    text-decoration: none;
    font-weight: 500;
}

.contact-link:hover {
    text-decoration: underline;
}

.contact-location {
    margin-top: 10px;
    color: #666;
}

/* Contact Form Section */
.contact-form-section {
    padding: 80px 0;
}

.contact-form {
    max-width: 700px;
    margin: 0 auto;
    background-color: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #333;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #1a73e8;
}

.form-actions {
    text-align: center;
    margin-top: 30px;
}

/* Map Section */
.map-section {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.map-container {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    height: 400px;
}

.map-container iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

/* Privacy Policy and Terms of Service */
.privacy-policy,
.terms-of-service {
    padding: 80px 0;
}

.policy-content {
    max-width: 900px;
    margin: 0 auto;
}

.policy-intro {
    text-align: center;
    margin-bottom: 40px;
    font-size: 1.1rem;
    line-height: 1.8;
}

.policy-sections {
    background-color: white;
    border-radius: 10px;
    padding: 40px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.terms-section {
    margin-bottom: 40px;
}

.terms-section:last-child {
    margin-bottom: 0;
}

.terms-section h2 {
    font-size: 1.8rem;
    color: #1a73e8;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e8f0fe;
}

.terms-section h3 {
    font-size: 1.3rem;
    color: #1a73e8;
    margin: 20px 0 10px;
}

.terms-section p {
    line-height: 1.8;
    margin-bottom: 15px;
    color: #333;
}

.terms-section ul {
    padding-left: 20px;
    margin-bottom: 15px;
}

.terms-section li {
    margin-bottom: 10px;
    line-height: 1.6;
}

/* CTA Section */
.cta {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 100px 0;
    text-align: center;
    color: white;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.cta-subtitle {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 30px;
    opacity: 0.9;
}

.cta .btn {
    background-color: white;
    color: #667eea;
}

.cta .btn:hover {
    background-color: #f0f0f0;
    transform: translateY(-2px);
}

/* Footer Styles */
.footer {
    background-color: #1a1a1a;
    color: #fff;
    padding: 60px 0 30px;
}

.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.footer-left, .footer-right {
    flex: 1;
    max-width: 45%; /* 确保左右两侧宽度一致 */
}

.footer-right {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.footer-links, .footer-legal {
    margin-left: 30px;
    flex: 1; /* 让链接和法律信息等宽 */
}

.footer-info p {
    margin-bottom: 8px;
    color: #ccc;
}

.footer-contact a {
    color: #667eea;
    text-decoration: none;
}

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

.footer-bottom {
    text-align: center;
    margin-top: 30px;
    width: 100%;
}

/* Responsive Design */
@media (max-width: 768px) {
    .footer .container {
        flex-direction: column;
        gap: 20px;
    }

    .footer-right {
        flex-direction: column;
        gap: 20px;
    }

    .footer-link-group {
        margin-bottom: 20px;
    }
}