/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    background-color: #f5f5f5;
    color: #333;
}

.container {
    display: flex;
    min-height: calc(100vh - 160px); /* 减去页首和页尾的高度 */
}

/* 页首样式 */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 15px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: relative;
    z-index: 999;
}

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

.company-info h1 {
    font-size: 1.8rem;
    margin: 0;
    font-weight: 600;
}

.company-info p {
    margin: 5px 0 0 0;
    font-size: 0.9rem;
    opacity: 0.9;
}

.contact-info {
    display: flex;
    gap: 20px;
    font-size: 0.9rem;
}

.contact-info span {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* 左侧导航栏样式 */
.sidebar {
    width: 280px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    box-shadow: 2px 0 10px rgba(0,0,0,0.1);
    z-index: 1000;
}

.nav-header {
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid rgba(255,255,255,0.2);
}

.logo {
    max-width: 100%;
    height: auto;
    max-height: 200px;
    display: block;
    margin: 0 auto;
}

.nav-menu {
    list-style: none;
    padding: 0;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.nav-link:hover {
    background-color: rgba(255,255,255,0.1);
    padding-left: 25px;
}

.nav-item.active .nav-link {
    background-color: rgba(255,255,255,0.2);
    border-left: 4px solid #fff;
}

/* 下拉菜单样式 */
.dropdown-arrow {
    font-size: 0.8rem;
    transition: transform 0.3s ease;
    cursor: pointer;
    padding: 5px;
    margin-left: 5px;
}

.dropdown-arrow:hover {
    background-color: rgba(255,255,255,0.1);
    border-radius: 3px;
}

.dropdown-menu {
    list-style: none;
    background-color: rgba(0,0,0,0.2);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.dropdown-menu li {
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.dropdown-menu a {
    display: block;
    padding: 12px 40px;
    color: rgba(255,255,255,0.9);
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.dropdown-menu a:hover {
    background-color: rgba(255,255,255,0.1);
    padding-left: 45px;
    color: white;
}

/* 下拉菜单展开状态 */
.dropdown.open .dropdown-menu {
    max-height: 300px;
}

.dropdown.open .dropdown-arrow {
    transform: rotate(180deg);
}

/* 主要内容区域 */
.main-content {
    margin-left: 280px;
    flex: 1;
    padding: 40px;
    background-color: #fff;
    min-height: calc(100vh - 160px);
}

.content-wrapper {
    max-width: 1200px;
    margin: 0 auto;
}

/* Hero Section */
.hero-section {
    text-align: center;
    margin-bottom: 60px;
    padding: 40px 0;
}

.hero-section h1 {
    color: #2c3e50;
    font-size: 2.5rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero-subtitle {
    color: #7f8c8d;
    font-size: 1.2rem;
    margin-bottom: 30px;
}

.hero-image {
    width: 100%;
    max-width: 800px;
    height: 400px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* Service Sections */
.service-section {
    margin-bottom: 60px;
    padding: 40px 0;
    border-bottom: 1px solid #ecf0f1;
}

.service-content {
    display: flex;
    align-items: center;
    gap: 40px;
}

.service-content.reverse {
    flex-direction: row-reverse;
}

.service-text {
    flex: 1;
}

.service-text h2 {
    color: #2c3e50;
    font-size: 2rem;
    margin-bottom: 15px;
}

.service-text h3 {
    color: #3498db;
    font-size: 1.3rem;
    margin-bottom: 20px;
    font-weight: 600;
}

.service-text h4 {
    color: #2c3e50;
    font-size: 1.1rem;
    margin-bottom: 10px;
    font-weight: 600;
}

.service-text p {
    color: #7f8c8d;
    line-height: 1.6;
    margin-bottom: 20px;
}

.service-list {
    list-style: none;
    padding: 0;
    margin-bottom: 20px;
}

.service-list li {
    color: #7f8c8d;
    padding: 8px 0;
    border-bottom: 1px solid #ecf0f1;
    position: relative;
    padding-left: 20px;
}

.service-list li:before {
    content: "✓";
    color: #27ae60;
    font-weight: bold;
    position: absolute;
    left: 0;
}

.service-image {
    flex: 1;
}

.section-image {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.service-link {
    display: inline-block;
    color: #3498db;
    text-decoration: none;
    font-weight: 600;
    padding: 10px 20px;
    border: 2px solid #3498db;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.service-link:hover {
    background-color: #3498db;
    color: white;
}

/* Data Plans */
.data-plans {
    display: flex;
    gap: 30px;
    margin-bottom: 20px;
}

.plan-category {
    flex: 1;
}

.plan-category ul {
    list-style: none;
    padding: 0;
}

.plan-category li {
    color: #7f8c8d;
    padding: 5px 0;
    border-bottom: 1px solid #ecf0f1;
}

/* Location Section */
.location-section {
    margin-top: 60px;
    padding: 40px 0;
    background-color: #f8f9fa;
    border-radius: 10px;
    padding: 40px;
}

.location-section h2 {
    color: #2c3e50;
    text-align: center;
    margin-bottom: 30px;
    font-size: 2rem;
}

.location-content {
    display: flex;
    gap: 40px;
    align-items: flex-start;
}

.location-info {
    flex: 1;
}

.location-info h3 {
    color: #3498db;
    margin-bottom: 15px;
}

.location-info p {
    color: #7f8c8d;
    line-height: 1.6;
    margin-bottom: 15px;
}

.map-container {
    flex: 1;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

/* Feature Categories */
.feature-category {
    margin-bottom: 60px;
    padding: 40px 0;
    border-bottom: 1px solid #ecf0f1;
}

.category-header {
    display: flex;
    align-items: center;
    gap: 40px;
    margin-bottom: 40px;
}

.category-header h2 {
    flex: 1;
    color: #2c3e50;
    font-size: 2rem;
    margin: 0;
}

.category-image {
    width: 300px;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 20px;
}

.feature-item {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 10px;
    border-left: 4px solid #3498db;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.feature-item h4 {
    color: #2c3e50;
    margin-bottom: 12px;
    font-size: 1.1rem;
    font-weight: 600;
}

.feature-item p {
    color: #7f8c8d;
    font-size: 0.95rem;
    margin: 0;
    line-height: 1.5;
}

/* Queue Strategies */
.queue-strategies h3 {
    color: #3498db;
    margin-bottom: 20px;
    font-size: 1.4rem;
}

/* Integration Grid */
.integration-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.integration-section {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 10px;
    border-top: 4px solid #27ae60;
}

.integration-section h3 {
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.integration-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.integration-section li {
    color: #7f8c8d;
    padding: 8px 0;
    border-bottom: 1px solid #ecf0f1;
    position: relative;
    padding-left: 20px;
}

.integration-section li:before {
    content: "✓";
    color: #27ae60;
    font-weight: bold;
    position: absolute;
    left: 0;
}

.integration-section li:last-child {
    border-bottom: none;
}

/* UC Specific Styles */
.features-list ul {
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.features-list li {
    color: #7f8c8d;
    padding: 8px 0;
    border-bottom: 1px solid #ecf0f1;
    font-size: 1rem;
}

.desktop-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 25px;
}

.desktop-features .feature-item {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid #3498db;
}

.desktop-features .feature-item h4 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 1rem;
}

.desktop-features .feature-item p {
    color: #7f8c8d;
    font-size: 0.9rem;
    margin: 0;
}

.meeting-benefits {
    margin-top: 25px;
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
}

.benefit-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.benefit-item h4 {
    color: #2c3e50;
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.benefit-item p {
    color: #7f8c8d;
    margin: 0;
    font-size: 0.9rem;
}

.mobile-features {
    margin-top: 25px;
}

.mobile-feature {
    margin-bottom: 20px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid #27ae60;
}

.mobile-feature h4 {
    color: #2c3e50;
    margin-bottom: 8px;
    font-size: 1rem;
}

.mobile-feature p {
    color: #7f8c8d;
    margin: 0;
    font-size: 0.9rem;
}

.webrtc-benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 25px;
}

.webrtc-item {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid #e74c3c;
}

.webrtc-item h4 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 1rem;
}

.webrtc-item p {
    color: #7f8c8d;
    font-size: 0.9rem;
    margin: 0;
}

/* CRM Integration Showcase */
.integration-showcase {
    margin: 60px 0;
    padding: 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
    color: white;
    text-align: center;
}

.integration-showcase h2 {
    color: white;
    margin-bottom: 15px;
    font-size: 2rem;
}

.integration-subtitle {
    color: rgba(255,255,255,0.9);
    font-size: 1.1rem;
    margin-bottom: 40px;
}

.crm-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.crm-card {
    background: rgba(255,255,255,0.1);
    padding: 25px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    transition: transform 0.3s ease;
}

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

.crm-card h3 {
    color: white;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.crm-card p {
    color: rgba(255,255,255,0.8);
    font-size: 0.9rem;
    margin: 0;
}

/* Teams Integration Specific Styles */
.integration-benefits {
    margin-top: 25px;
}

.integration-benefits .benefit-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
    border-left: 4px solid #5b2c87;
}

.integration-benefits .benefit-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.integration-benefits .benefit-item h4 {
    color: #2c3e50;
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.integration-benefits .benefit-item p {
    color: #7f8c8d;
    margin: 0;
    font-size: 0.9rem;
}

/* Features Showcase */
.features-showcase {
    margin: 60px 0;
    padding: 40px;
    background: linear-gradient(135deg, #5b2c87 0%, #3498db 100%);
    border-radius: 15px;
    color: white;
    text-align: center;
}

.features-showcase h2 {
    color: white;
    margin-bottom: 40px;
    font-size: 2rem;
}

.features-showcase .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.feature-card {
    background: rgba(255,255,255,0.1);
    padding: 30px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    transition: transform 0.3s ease;
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    color: white;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.feature-card p {
    color: rgba(255,255,255,0.8);
    font-size: 0.9rem;
    margin: 0;
}

/* Process Steps */
.process-steps {
    margin-top: 30px;
}

.step-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 25px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
}

.step-number {
    background: #5b2c87;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.step-content h4 {
    color: #2c3e50;
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.step-content p {
    color: #7f8c8d;
    margin: 0;
    font-size: 0.9rem;
}

/* Use Cases Section */
.use-cases-section {
    margin: 60px 0;
    padding: 40px;
    background: #f8f9fa;
    border-radius: 15px;
}

.use-cases-section h2 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 40px;
    font-size: 2rem;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.use-case-card {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.use-case-card:hover {
    transform: translateY(-3px);
}

.use-case-card h3 {
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.use-case-card p {
    color: #7f8c8d;
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* CTA Section */
.cta-section {
    margin: 60px 0;
    padding: 50px;
    background: linear-gradient(135deg, #2c3e50 0%, #5b2c87 100%);
    border-radius: 15px;
    text-align: center;
    color: white;
}

.cta-content h2 {
    color: white;
    margin-bottom: 20px;
    font-size: 2rem;
}

.cta-content p {
    color: rgba(255,255,255,0.9);
    font-size: 1.1rem;
    margin-bottom: 30px;
}

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

.cta-button {
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

.cta-button.primary {
    background: #3498db;
    color: white;
}

.cta-button.primary:hover {
    background: #2980b9;
    transform: translateY(-2px);
}

.cta-button.secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.cta-button.secondary:hover {
    background: white;
    color: #2c3e50;
}

/* SIP Trunking Specific Styles */
.compatibility-section {
    margin: 60px 0;
    padding: 40px;
    background: #f8f9fa;
    border-radius: 15px;
}

.compatibility-section h2 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 2rem;
}

.compatibility-subtitle {
    text-align: center;
    color: #7f8c8d;
    font-size: 1.1rem;
    margin-bottom: 40px;
}

.vendor-categories {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.vendor-category {
    background: white;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.vendor-header {
    display: flex;
    align-items: center;
    gap: 25px;
    margin-bottom: 20px;
}

.vendor-image {
    width: 120px;
    height: 80px;
    object-fit: cover;
    border-radius: 8px;
    flex-shrink: 0;
}

.vendor-info h3 {
    color: #2c3e50;
    margin-bottom: 8px;
    font-size: 1.3rem;
}

.vendor-info p {
    color: #7f8c8d;
    margin: 0;
    font-size: 0.9rem;
}

.model-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
}

.model-item {
    background: #f8f9fa;
    padding: 12px 16px;
    border-radius: 6px;
    text-align: center;
    color: #2c3e50;
    font-weight: 500;
    border-left: 3px solid #3498db;
    transition: all 0.3s ease;
}

.model-item:hover {
    background: #e9ecef;
    transform: translateY(-2px);
}

/* CTA Features */
.cta-features {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin: 30px 0;
}

.cta-feature {
    display: flex;
    align-items: center;
    gap: 15px;
    color: rgba(255,255,255,0.9);
    font-size: 1rem;
}

.cta-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

/* BIR Specific Styles */
.dashboard-features {
    margin-top: 25px;
}

.dashboard-features .feature-item {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid #3498db;
    margin-bottom: 15px;
}

.dashboard-features .feature-item h4 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 1rem;
}

.dashboard-features .feature-item p {
    color: #7f8c8d;
    font-size: 0.9rem;
    margin: 0;
}

.realtime-features {
    margin-top: 25px;
}

.realtime-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
    border-left: 4px solid #e74c3c;
}

.realtime-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.realtime-item h4 {
    color: #2c3e50;
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.realtime-item p {
    color: #7f8c8d;
    margin: 0;
    font-size: 0.9rem;
}

/* Reporting Categories */
.reporting-categories {
    margin: 60px 0;
    padding: 40px;
    background: #f8f9fa;
    border-radius: 15px;
}

.reporting-categories h2 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 40px;
    font-size: 2rem;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.category-card {
    background: white;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.category-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
}

.category-image {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 8px;
    flex-shrink: 0;
}

.category-info h3 {
    color: #2c3e50;
    margin-bottom: 8px;
    font-size: 1.2rem;
}

.category-info p {
    color: #7f8c8d;
    margin: 0;
    font-size: 0.9rem;
}

.category-features ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.category-features li {
    color: #7f8c8d;
    padding: 8px 0;
    border-bottom: 1px solid #ecf0f1;
    font-size: 0.9rem;
    position: relative;
    padding-left: 20px;
}

.category-features li:before {
    content: "✓";
    color: #27ae60;
    font-weight: bold;
    position: absolute;
    left: 0;
}

.category-features li:last-child {
    border-bottom: none;
}

/* Implementation Benefits */
.implementation-benefits {
    margin-top: 25px;
}

.implementation-benefits .benefit-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
    border-left: 4px solid #27ae60;
}

.implementation-benefits .benefit-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.implementation-benefits .benefit-item h4 {
    color: #2c3e50;
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.implementation-benefits .benefit-item p {
    color: #7f8c8d;
    margin: 0;
    font-size: 0.9rem;
}

/* Teams Analytics Specific Styles */
.analytics-category {
    margin: 60px 0;
    padding: 40px;
    background: #f8f9fa;
    border-radius: 15px;
}

.analytics-category .category-header {
    display: flex;
    align-items: center;
    gap: 30px;
    margin-bottom: 40px;
    padding: 30px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.analytics-category .category-image {
    width: 150px;
    height: 100px;
    object-fit: cover;
    border-radius: 8px;
    flex-shrink: 0;
}

.analytics-category .category-info h2 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 2rem;
}

.analytics-category .category-info p {
    color: #7f8c8d;
    margin: 0;
    font-size: 1.1rem;
}

.analytics-features {
    margin-top: 30px;
}

.analytics-features .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
}

.analytics-features .feature-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.analytics-features .feature-card:hover {
    transform: translateY(-5px);
}

.analytics-features .feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
}

.analytics-features .feature-card h3 {
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.analytics-features .feature-card p {
    color: #7f8c8d;
    margin-bottom: 20px;
    font-size: 1rem;
    line-height: 1.5;
}

.analytics-features .feature-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.analytics-features .feature-card li {
    color: #7f8c8d;
    padding: 8px 0;
    border-bottom: 1px solid #ecf0f1;
    font-size: 0.9rem;
    position: relative;
    padding-left: 20px;
}

.analytics-features .feature-card li:before {
    content: "✓";
    color: #27ae60;
    font-weight: bold;
    position: absolute;
    left: 0;
}

.analytics-features .feature-card li:last-child {
    border-bottom: none;
}

/* Implementation Steps */
.implementation-steps {
    margin-top: 30px;
}

.implementation-steps .step-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 25px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
}

.implementation-steps .step-number {
    background: #3498db;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.implementation-steps .step-content h4 {
    color: #2c3e50;
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.implementation-steps .step-content p {
    color: #7f8c8d;
    margin: 0;
    font-size: 0.9rem;
}

/* Business Intelligence Reporting Specific Styles */
.solutions-overview {
    margin: 60px 0;
    padding: 40px;
    background: #f8f9fa;
    border-radius: 15px;
}

.solutions-overview h2 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 40px;
    font-size: 2rem;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

.solution-card {
    background: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.solution-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 25px;
}

.solution-image {
    width: 100px;
    height: 80px;
    object-fit: cover;
    border-radius: 8px;
    flex-shrink: 0;
}

.solution-info h3 {
    color: #2c3e50;
    margin-bottom: 8px;
    font-size: 1.3rem;
}

.solution-info p {
    color: #7f8c8d;
    margin: 0;
    font-size: 0.9rem;
}

.solution-features h4 {
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.solution-features ul {
    list-style: none;
    padding: 0;
    margin-bottom: 20px;
}

.solution-features li {
    color: #7f8c8d;
    padding: 6px 0;
    font-size: 0.9rem;
    position: relative;
    padding-left: 20px;
}

.solution-features li:before {
    content: "✓";
    color: #27ae60;
    font-weight: bold;
    position: absolute;
    left: 0;
}

.solution-link {
    color: #3498db;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.solution-link:hover {
    color: #2980b9;
}

/* Capabilities List */
.capabilities-list {
    margin-top: 25px;
}

.capability-item {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid #3498db;
    margin-bottom: 15px;
}

.capability-item h4 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 1rem;
}

.capability-item p {
    color: #7f8c8d;
    font-size: 0.9rem;
    margin: 0;
}

/* Industry Applications */
.industry-applications {
    margin: 60px 0;
    padding: 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
    color: white;
}

.industry-applications h2 {
    text-align: center;
    color: white;
    margin-bottom: 40px;
    font-size: 2rem;
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.application-card {
    background: rgba(255,255,255,0.1);
    padding: 25px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    text-align: center;
    transition: transform 0.3s ease;
}

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

.application-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.application-card h3 {
    color: white;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.application-card p {
    color: rgba(255,255,255,0.8);
    font-size: 0.9rem;
    margin: 0;
    line-height: 1.5;
}

/* Implementation Process */
.implementation-process {
    margin-top: 30px;
}

.process-step {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 25px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
}

.process-step .step-number {
    background: #27ae60;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.process-step .step-content h4 {
    color: #2c3e50;
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.process-step .step-content p {
    color: #7f8c8d;
    margin: 0;
    font-size: 0.9rem;
}

/* ROI Section */
.roi-section {
    margin: 60px 0;
    padding: 40px;
    background: #2c3e50;
    border-radius: 15px;
    color: white;
    text-align: center;
}

.roi-section h2 {
    color: white;
    margin-bottom: 40px;
    font-size: 2rem;
}

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

.roi-card {
    background: rgba(255,255,255,0.1);
    padding: 30px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
}

.roi-number {
    font-size: 3rem;
    font-weight: bold;
    color: #3498db;
    margin-bottom: 15px;
}

.roi-card h3 {
    color: white;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.roi-card p {
    color: rgba(255,255,255,0.8);
    font-size: 0.9rem;
    margin: 0;
    line-height: 1.5;
}

/* Sub-Solutions */
.sub-solutions {
    margin: 60px 0;
    padding: 40px;
    background: #f8f9fa;
    border-radius: 15px;
}

.sub-solutions h2 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 40px;
    font-size: 2rem;
}

.sub-solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.sub-solution-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-decoration: none;
    color: inherit;
    transition: transform 0.3s ease;
    display: flex;
    align-items: center;
    gap: 20px;
}

.sub-solution-card:hover {
    transform: translateY(-5px);
    text-decoration: none;
    color: inherit;
}

.sub-solution-icon {
    font-size: 3rem;
    flex-shrink: 0;
}

.sub-solution-card h3 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.sub-solution-card p {
    color: #7f8c8d;
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.5;
}

.sub-solution-arrow {
    color: #3498db;
    font-size: 1.5rem;
    font-weight: bold;
    margin-left: auto;
}

/* Data Services Specific Styles */
.xconnect-benefits {
    margin-top: 25px;
}

.xconnect-benefits .benefit-item {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid #3498db;
    margin-bottom: 15px;
}

.xconnect-benefits .benefit-item h4 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 1rem;
}

.xconnect-benefits .benefit-item p {
    color: #7f8c8d;
    font-size: 0.9rem;
    margin: 0;
}

/* NBN Services */
.nbn-services {
    margin: 60px 0;
    padding: 40px;
    background: #f8f9fa;
    border-radius: 15px;
}

.nbn-services h2 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 2rem;
}

.nbn-subtitle {
    text-align: center;
    color: #7f8c8d;
    font-size: 1.1rem;
    margin-bottom: 40px;
}

.nbn-categories {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.nbn-category {
    background: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.nbn-header {
    display: flex;
    align-items: center;
    gap: 25px;
    margin-bottom: 25px;
}

.nbn-image {
    width: 120px;
    height: 80px;
    object-fit: cover;
    border-radius: 8px;
    flex-shrink: 0;
}

.nbn-info h3 {
    color: #2c3e50;
    margin-bottom: 8px;
    font-size: 1.3rem;
}

.nbn-info p {
    color: #7f8c8d;
    margin: 0;
    font-size: 0.9rem;
}

.nbn-technologies {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.tech-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid #e74c3c;
}

.tech-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.tech-content h4 {
    color: #2c3e50;
    margin-bottom: 8px;
    font-size: 1rem;
}

.tech-content p {
    color: #7f8c8d;
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.4;
}

.enterprise-features ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}

.enterprise-features li {
    color: #7f8c8d;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 6px;
    font-size: 0.9rem;
    position: relative;
    padding-left: 35px;
    border-left: 4px solid #27ae60;
}

.enterprise-features li:before {
    content: "✓";
    color: #27ae60;
    font-weight: bold;
    position: absolute;
    left: 15px;
}

/* Fiber Advantages */
.fiber-advantages {
    margin-top: 25px;
}

.advantage-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
    border-left: 4px solid #9b59b6;
}

.advantage-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.advantage-item h4 {
    color: #2c3e50;
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.advantage-item p {
    color: #7f8c8d;
    margin: 0;
    font-size: 0.9rem;
}

/* Wireless Features */
.wireless-features {
    margin-top: 25px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.wireless-item {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid #f39c12;
}

.wireless-item h4 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 1rem;
}

.wireless-item p {
    color: #7f8c8d;
    font-size: 0.9rem;
    margin: 0;
}

/* Use Cases */
.use-cases {
    margin: 60px 0;
    padding: 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
    color: white;
}

.use-cases h2 {
    text-align: center;
    color: white;
    margin-bottom: 40px;
    font-size: 2rem;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.use-case-card {
    background: rgba(255,255,255,0.1);
    padding: 25px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    text-align: center;
    transition: transform 0.3s ease;
}

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

.use-case-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.use-case-card h3 {
    color: white;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.use-case-card p {
    color: rgba(255,255,255,0.8);
    font-size: 0.9rem;
    margin: 0;
    line-height: 1.5;
}

/* Sub-Services */
.sub-services {
    margin: 60px 0;
    padding: 40px;
    background: #f8f9fa;
    border-radius: 15px;
}

.sub-services h2 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 40px;
    font-size: 2rem;
}

.sub-services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.sub-service-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-decoration: none;
    color: inherit;
    transition: transform 0.3s ease;
    display: flex;
    align-items: center;
    gap: 20px;
}

.sub-service-card:hover {
    transform: translateY(-5px);
    text-decoration: none;
    color: inherit;
}

.sub-service-icon {
    font-size: 3rem;
    flex-shrink: 0;
}

.sub-service-card h3 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.sub-service-card p {
    color: #7f8c8d;
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.5;
}

.sub-service-arrow {
    color: #3498db;
    font-size: 1.5rem;
    font-weight: bold;
    margin-left: auto;
}

/* Responsive Design for Features */
@media (max-width: 768px) {
    .category-header {
        flex-direction: column;
        text-align: center;
    }
    
    .category-image {
        width: 100%;
        max-width: 400px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .integration-grid {
        grid-template-columns: 1fr;
    }
    
    .desktop-features {
        grid-template-columns: 1fr;
    }
    
    .webrtc-benefits {
        grid-template-columns: 1fr;
    }
    
    .crm-grid {
        grid-template-columns: 1fr;
    }
    
    .features-showcase .features-grid {
        grid-template-columns: 1fr;
    }
    
    .use-cases-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-button {
        width: 100%;
        max-width: 300px;
    }
    
    .vendor-header {
        flex-direction: column;
        text-align: center;
    }
    
    .vendor-image {
        width: 100%;
        max-width: 200px;
        height: 120px;
    }
    
    .model-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-features {
        align-items: center;
        text-align: center;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .analytics-category .category-header {
        flex-direction: column;
        text-align: center;
    }
    
    .analytics-category .category-image {
        width: 100%;
        max-width: 200px;
        height: 120px;
    }
    
    .analytics-features .features-grid {
        grid-template-columns: 1fr;
    }
    
    .solutions-grid {
        grid-template-columns: 1fr;
    }
    
    .solution-header {
        flex-direction: column;
        text-align: center;
    }
    
    .solution-image {
        width: 100%;
        max-width: 150px;
        height: 100px;
    }
    
    .applications-grid {
        grid-template-columns: 1fr;
    }
    
    .roi-metrics {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .sub-solutions-grid {
        grid-template-columns: 1fr;
    }
    
    .sub-solution-card {
        flex-direction: column;
        text-align: center;
    }
    
    .sub-solution-arrow {
        margin-left: 0;
        margin-top: 10px;
    }
    
    .nbn-header {
        flex-direction: column;
        text-align: center;
    }
    
    .nbn-image {
        width: 100%;
        max-width: 200px;
        height: 120px;
    }
    
    .nbn-technologies {
        grid-template-columns: 1fr;
    }
    
    .enterprise-features ul {
        grid-template-columns: 1fr;
    }
    
    .wireless-features {
        grid-template-columns: 1fr;
    }
    
    .sub-services-grid {
        grid-template-columns: 1fr;
    }
    
    .sub-service-card {
        flex-direction: column;
        text-align: center;
    }
    
    .sub-service-arrow {
        margin-left: 0;
        margin-top: 10px;
    }
}

/* Platform Support */
.platform-support {
    margin-top: 20px;
}

.platform-support h4 {
    color: #2c3e50;
    margin-bottom: 10px;
}

.platform-support ul {
    list-style: none;
    padding: 0;
}

.platform-support li {
    color: #7f8c8d;
    padding: 5px 0;
    position: relative;
    padding-left: 20px;
}

.platform-support li:before {
    content: "✓";
    color: #27ae60;
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* Benefits Section */
.benefits-section {
    margin: 60px 0;
    padding: 40px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 10px;
}

.benefits-section h2 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 40px;
    font-size: 2rem;
}

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

.benefit-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.benefit-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.benefit-card h3 {
    color: #2c3e50;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.benefit-card p {
    color: #7f8c8d;
    line-height: 1.6;
}

/* Related Pages Section */
.related-pages {
    margin-top: 60px;
}

.related-pages h2 {
    color: #2c3e50;
    margin-bottom: 30px;
    font-size: 2rem;
}

.page-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.page-link-card {
    background: white;
    padding: 25px;
    border-radius: 8px;
    text-decoration: none;
    border: 2px solid #ecf0f1;
    transition: all 0.3s ease;
}

.page-link-card:hover {
    border-color: #3498db;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.page-link-card h3 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.page-link-card p {
    color: #7f8c8d;
    margin: 0;
    font-size: 0.9rem;
}

.content-wrapper h1 {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 20px;
    font-weight: 300;
}

.content-wrapper p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #666;
}

/* 主页响应式设计 */
@media (max-width: 768px) {
    .service-content,
    .service-content.reverse {
        flex-direction: column;
    }
    
    .data-plans {
        flex-direction: column;
    }
    
    .location-content {
        flex-direction: column;
    }
    
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .sidebar {
        width: 250px;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding: 20px;
    }
}

/* 滚动条样式 */
.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-track {
    background: rgba(255,255,255,0.1);
}

.sidebar::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.3);
    border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: rgba(255,255,255,0.5);
}

/* 子页面高亮样式 */
.active-sub {
    background-color: rgba(255,255,255,0.15) !important;
    font-weight: 600;
    border-left: 3px solid #fff;
    padding-left: 37px !important;
}

/* 页尾样式 */
.footer {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: white;
    margin-top: auto;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.footer-logo {
    max-width: 150px;
    height: auto;
    margin-bottom: 15px;
    display: block;
}

.footer-section h3 {
    color: #3498db;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.footer-section h4 {
    color: #ecf0f1;
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.footer-section p {
    margin-bottom: 8px;
    line-height: 1.6;
    color: #bdc3c7;
}

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

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section ul li a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #3498db;
}

.footer-bottom {
    background-color: rgba(0,0,0,0.2);
    text-align: center;
    padding: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-bottom p {
    margin: 0;
    color: #bdc3c7;
}

.footer-bottom a {
    color: #3498db;
    text-decoration: none;
}

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

/* 响应式设计更新 */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .contact-info {
        flex-direction: column;
        gap: 10px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .container {
        min-height: calc(100vh - 200px);
    }
}