:root {
    --primary-blue: rgb(38, 118, 255);
    --primary-blue-hex: #2676FF;
    --text-dark: rgb(0, 0, 0);
    --text-gray: rgb(70, 76, 87);
    --text-light: rgb(255, 255, 255);
    --background-white: rgb(255, 255, 255);
    --background-light: rgb(248, 249, 250);
    --border-light: rgb(233, 236, 239);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    font-size: 14px;
    font-weight: 400;
    line-height: 25px;
    color: var(--text-dark);
    background-color: var(--background-white);
}

.top-banner {
    background-color: var(--primary-blue);
    color: var(--text-light);
    padding: 8px 0;
    font-size: 14px;
    text-align: center;
}

.top-banner .container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
}

.learn-more-link {
    color: var(--text-light);
    text-decoration: underline;
}

.learn-more-link:hover {
    color: var(--text-light);
    text-decoration: none;
}

.navbar {
    height: 90px;
    padding: 0;
    background-color: var(--background-white);
    border-bottom: 1px solid var(--border-light);
}

.navbar .container {
    height: 100%;
    display: flex;
    align-items: center;
}

.navbar-brand {
    text-decoration: none;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
}

.logo i {
    color: var(--primary-blue);
    font-size: 24px;
}

.navbar-nav .nav-link {
    color: var(--text-dark);
    font-size: 16px;
    font-weight: 500;
    padding: 8px 16px;
    transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover {
    color: var(--primary-blue);
}

.search-icon, .globe-icon {
    font-size: 16px;
    padding: 8px 12px;
}

.cta-button {
    background-color: var(--primary-blue);
    color: var(--text-light);
    border: none;
    padding: 12px 24px;
    border-radius: 4px;
    font-size: 18px;
    font-weight: 500;
    text-decoration: none;
    transition: background-color 0.3s ease;
}

.cta-button:hover {
    background-color: rgba(38, 118, 255, 0.9);
    color: var(--text-light);
}

.hero-section {
    padding: 80px 0;
    background-color: var(--background-white);
}

.hero-title {
    font-size: 44px;
    font-weight: 700;
    line-height: 48px;
    color: var(--text-dark);
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 18px;
    font-weight: 300;
    line-height: 32px;
    color: var(--text-gray);
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.btn-primary {
    background-color: var(--primary-blue);
    border-color: var(--primary-blue);
    color: var(--text-light);
    padding: 12px 24px;
    border-radius: 4px;
    font-size: 18px;
    font-weight: 500;
    text-decoration: none;
    border: none;
    transition: background-color 0.3s ease;
}

.btn-primary:hover {
    background-color: rgba(38, 118, 255, 0.9);
    border-color: rgba(38, 118, 255, 0.9);
    color: var(--text-light);
}

.btn-outline-primary {
    background-color: transparent;
    border: 2px solid var(--primary-blue);
    color: var(--primary-blue);
    padding: 10px 20px;
    border-radius: 4px;
    font-size: 18px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-outline-primary:hover {
    background-color: var(--primary-blue);
    border-color: var(--primary-blue);
    color: var(--text-light);
}

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

.hero-image img {
    max-width: 100%;
    height: auto;
}

.customers-section {
    padding: 60px 0;
    background-color: var(--background-light);
}

.customer-logos {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    gap: 40px;
}

.customer-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-gray);
    font-size: 14px;
    font-weight: 500;
}

.customer-logo i {
    font-size: 32px;
    color: var(--text-gray);
}

.products-section {
    padding: 80px 0;
    background-color: var(--background-white);
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    line-height: 48px;
    color: var(--text-dark);
    margin-bottom: 60px;
    text-align: center;
}

.product-card {
    background-color: var(--background-white);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    padding: 40px;
    text-align: center;
    height: 100%;
    transition: box-shadow 0.3s ease;
}

.product-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.product-icon {
    width: 80px;
    height: 80px;
    background-color: var(--primary-blue);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.product-icon i {
    font-size: 32px;
    color: var(--text-light);
}

.product-card h3 {
    font-size: 24px;
    font-weight: 700;
    line-height: 40px;
    color: var(--text-dark);
    margin-bottom: 16px;
}

.product-card p {
    font-size: 16px;
    line-height: 28px;
    color: var(--text-gray);
}

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

.section-subtitle {
    font-size: 18px;
    font-weight: 300;
    line-height: 32px;
    color: var(--text-gray);
    margin-bottom: 24px;
}

.section-description {
    font-size: 16px;
    line-height: 28px;
    color: var(--text-gray);
    margin-bottom: 60px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    margin-bottom: 60px;
}

.feature-item {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
}

.feature-icon {
    width: 60px;
    height: 60px;
    background-color: var(--primary-blue);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-icon i {
    font-size: 24px;
    color: var(--text-light);
}

.feature-content h4 {
    font-size: 18px;
    font-weight: 700;
    line-height: 32px;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.feature-content p {
    font-size: 14px;
    line-height: 24px;
    color: var(--text-gray);
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.awards-section {
    padding: 80px 0;
    background-color: var(--background-white);
}

.award-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 20px;
}

.award-logo, .award-badge {
    margin-bottom: 16px;
}

.award-logo i, .award-badge i {
    font-size: 48px;
    color: var(--primary-blue);
}

.award-badge {
    background-color: var(--text-dark);
    color: var(--text-light);
    padding: 12px 24px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

.award-text {
    font-size: 16px;
    line-height: 24px;
}

.why-choose-section {
    padding: 80px 0;
    background-color: var(--background-light);
}

.advantage-card {
    background-color: var(--background-white);
    border-radius: 8px;
    padding: 40px;
    margin-bottom: 30px;
    height: 100%;
    transition: box-shadow 0.3s ease;
}

.advantage-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.advantage-icon {
    width: 60px;
    height: 60px;
    background-color: var(--primary-blue);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.advantage-icon i {
    font-size: 24px;
    color: var(--text-light);
}

.advantage-card h3 {
    font-size: 24px;
    font-weight: 700;
    line-height: 40px;
    color: var(--text-dark);
    margin-bottom: 16px;
}

.advantage-card p {
    font-size: 16px;
    line-height: 28px;
    color: var(--text-gray);
}

.applications-section {
    padding: 80px 0;
    background-color: var(--background-white);
}

.application-tabs {
    margin-top: 40px;
}

.tab-nav {
    display: flex;
    justify-content: center;
    gap: 0;
    margin-bottom: 40px;
    border-bottom: 1px solid var(--border-light);
}

.tab-button {
    background: none;
    border: none;
    padding: 16px 32px;
    font-size: 18px;
    font-weight: 500;
    color: var(--text-gray);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
}

.tab-button.active {
    color: var(--primary-blue);
    border-bottom-color: var(--primary-blue);
}

.tab-button:hover {
    color: var(--primary-blue);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

.application-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

.application-steps {
    padding-left: 40px;
}

.step-item {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
}

.step-number {
    width: 40px;
    height: 40px;
    background-color: var(--primary-blue);
    color: var(--text-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content h4 {
    font-size: 21.3px;
    font-weight: 700;
    line-height: 31px;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.step-content p {
    font-size: 16px;
    line-height: 28px;
    color: var(--text-gray);
}

.footer {
    background-color: var(--text-dark);
    color: var(--text-light);
    padding: 60px 0 20px;
}

.footer-brand {
    margin-bottom: 30px;
}

.footer-brand .logo {
    color: var(--text-light);
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 16px;
    line-height: 28px;
    color: rgba(255, 255, 255, 0.8);
}

.footer h5 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-light);
    margin-bottom: 20px;
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 14px;
    line-height: 24px;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--text-light);
}

.contact-info p {
    font-size: 14px;
    line-height: 24px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 8px;
}

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

.contact-info a:hover {
    color: var(--text-light);
}

.footer-divider {
    border-color: rgba(255, 255, 255, 0.2);
    margin: 40px 0 20px;
}

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

.footer-bottom p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

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

.pricing-card {
    background-color: var(--background-white);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    padding: 40px;
    margin-bottom: 30px;
    text-align: center;
    position: relative;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.pricing-card:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
    transform: translateY(-4px);
}

.pricing-card.featured {
    border-color: var(--primary-blue);
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-4px);
}

.featured-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--primary-blue);
    color: var(--text-light);
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.pricing-header h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.price {
    margin-bottom: 30px;
}

.price .currency {
    font-size: 24px;
    font-weight: 500;
    color: var(--text-gray);
    vertical-align: top;
}

.price .amount {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-blue);
}

.price .period {
    display: block;
    font-size: 14px;
    color: var(--text-gray);
    margin-top: 8px;
}

.pricing-features ul {
    list-style: none;
    padding: 0;
    margin-bottom: 40px;
}

.pricing-features li {
    padding: 8px 0;
    font-size: 14px;
    color: var(--text-gray);
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.pricing-features li i {
    color: var(--primary-blue);
    margin-right: 12px;
    width: 16px;
}

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

.comparison-table {
    background-color: var(--background-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.comparison-table .table {
    margin: 0;
}

.comparison-table th {
    background-color: var(--primary-blue);
    color: var(--text-light);
    font-weight: 600;
    text-align: center;
    padding: 20px;
    border: none;
}

.comparison-table td {
    text-align: center;
    padding: 16px;
    border-color: var(--border-light);
}

.price-small {
    font-size: 12px;
    font-weight: 400;
    opacity: 0.8;
}

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

.accordion-item {
    border: 1px solid var(--border-light);
    border-radius: 8px;
    margin-bottom: 16px;
    overflow: hidden;
}

.accordion-button {
    background-color: var(--background-white);
    color: var(--text-dark);
    font-weight: 600;
    padding: 20px;
    border: none;
    box-shadow: none;
}

.accordion-button:not(.collapsed) {
    background-color: var(--primary-blue);
    color: var(--text-light);
}

.accordion-button:focus {
    box-shadow: none;
    border: none;
}

.accordion-body {
    padding: 20px;
    background-color: var(--background-white);
    color: var(--text-gray);
    line-height: 1.6;
}

.cta-section {
    padding: 80px 0;
    background-color: var(--primary-blue);
    color: var(--text-light);
}

.cta-section .section-title {
    color: var(--text-light);
}

.cta-section .section-subtitle {
    color: rgba(255, 255, 255, 0.9);
}

.cta-section .btn-primary {
    background-color: var(--text-light);
    color: var(--primary-blue);
    border-color: var(--text-light);
}

.cta-section .btn-primary:hover {
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--primary-blue);
}

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

.contact-form-card {
    background-color: var(--background-white);
    border-radius: 8px;
    padding: 60px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.contact-form-card h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
    text-align: center;
}

.contact-form-card > p {
    font-size: 16px;
    color: var(--text-gray);
    text-align: center;
    margin-bottom: 40px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
    display: block;
}

.form-control {
    border: 1px solid var(--border-light);
    border-radius: 4px;
    padding: 12px 16px;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-dark);
    background-color: var(--background-white);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(38, 118, 255, 0.1);
    outline: none;
}

.form-control::placeholder {
    color: var(--text-gray);
    opacity: 0.7;
}

.form-check {
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.form-check-input {
    margin: 0;
    flex-shrink: 0;
}

.form-check-label {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.5;
}

.form-check-label a {
    color: var(--primary-blue);
    text-decoration: none;
}

.form-check-label a:hover {
    text-decoration: underline;
}

.thank-you-message {
    text-align: center;
    padding: 60px 40px;
}

.success-icon {
    font-size: 64px;
    color: #28a745;
    margin-bottom: 24px;
}

.thank-you-message h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
}

.thank-you-message p {
    font-size: 16px;
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: 16px;
}

.thank-you-message a {
    color: var(--primary-blue);
    text-decoration: none;
}

.thank-you-message a:hover {
    text-decoration: underline;
}

.contact-info-section {
    padding: 80px 0;
    background-color: var(--background-white);
}

.contact-info-card {
    text-align: center;
    padding: 40px 20px;
    margin-bottom: 30px;
}

.contact-icon {
    width: 80px;
    height: 80px;
    background-color: var(--primary-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.contact-icon i {
    font-size: 32px;
    color: var(--text-light);
}

.contact-info-card h4 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
}

.contact-info-card p {
    font-size: 16px;
    color: var(--text-gray);
    line-height: 1.6;
}

.contact-info-card a {
    color: var(--primary-blue);
    text-decoration: none;
}

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

.legal-content {
    padding: 80px 0;
    background-color: var(--background-white);
}

.legal-document {
    background-color: var(--background-white);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
}

.legal-document h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-dark);
    margin-top: 40px;
    margin-bottom: 16px;
    border-bottom: 2px solid var(--primary-blue);
    padding-bottom: 8px;
}

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

.legal-document h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    margin-top: 24px;
    margin-bottom: 12px;
}

.legal-document p {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-gray);
    margin-bottom: 16px;
}

.legal-document ul {
    margin-bottom: 16px;
    padding-left: 20px;
}

.legal-document li {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-gray);
    margin-bottom: 8px;
}

.legal-document a {
    color: var(--primary-blue);
    text-decoration: none;
}

.legal-document a:hover {
    text-decoration: underline;
}

.contact-details {
    background-color: var(--background-light);
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid var(--primary-blue);
    margin-top: 16px;
}

.contact-details p {
    margin-bottom: 0;
    font-size: 16px;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 32px;
        line-height: 40px;
    }
    
    .hero-subtitle {
        font-size: 16px;
        line-height: 28px;
    }
    
    .section-title {
        font-size: 28px;
        line-height: 36px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .hero-buttons .btn {
        text-align: center;
    }
    
    .customer-logos {
        gap: 20px;
    }
    
    .feature-item {
        flex-direction: column;
        text-align: center;
    }
    
    .advantage-card {
        margin-bottom: 20px;
    }
    
    .tab-nav {
        flex-direction: column;
        align-items: center;
    }
    
    .application-steps {
        padding-left: 0;
        margin-top: 40px;
    }
    
    .step-item {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 576px) {
    .top-banner .container {
        flex-direction: column;
        gap: 8px;
    }
    
    .navbar-brand .logo {
        font-size: 16px;
    }
    
    .hero-section {
        padding: 40px 0;
    }
    
    .products-section,
    .features-section,
    .awards-section,
    .why-choose-section,
    .applications-section {
        padding: 40px 0;
    }
    
    .product-card,
    .advantage-card {
        padding: 20px;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: stretch;
    }
}