/* Reset and Base Styles */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        :root {
            --primary-color: #1a365d;
            --secondary-color: #2d5aa0;
            --accent-color: #e53e3e;
            --light-color: #f7fafc;
            --dark-color: #2d3748;
            --text-color: #4a5568;
            --border-radius: 8px;
            --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        
        body {
            line-height: 1.6;
            color: var(--text-color);
            background-color: #fff;
            overflow-x: hidden;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        section {
            padding: 80px 0;
        }
        
        h1, h2, h3, h4 {
            color: var(--primary-color);
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        
        h1 {
            font-size: 2.5rem;
        }
        
        h2 {
            font-size: 2rem;
            text-align: center;
            margin-bottom: 3rem;
        }
        
        h3 {
            font-size: 1.5rem;
        }
        
        p {
            margin-bottom: 1.5rem;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        .btn {
            display: inline-block;
            background-color: var(--secondary-color);
            color: white;
            padding: 12px 24px;
            border-radius: var(--border-radius);
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        
        .btn:hover {
            background-color: var(--primary-color);
            transform: translateY(-2px);
        }
        
        /* Hero Section */
        .hero {
            background: linear-gradient(rgba(26, 54, 93, 0.7), rgba(26, 54, 93, 0.8)), 
                        url('https://i.pinimg.com/736x/06/4e/7e/064e7e2c0168e034217a339e062b366b.jpg') 
                        center/cover no-repeat !important;
            color: white;
            text-align: center;
            padding: 120px 0;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 60vh;
        }
        
        .hero .container {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            position: relative;
            z-index: 2;
        }
        
        .hero h1 {
            color: white;
            font-size: 3rem;
            margin-bottom: 1.5rem;
            text-align: center;
            width: 100%;
        }
        
        .hero p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto 2rem;
            text-align: center;
            width: 100%;
        }
        
        /* Content Block Styles */
        .content-block {
            display: flex;
            align-items: center;
            margin-bottom: 80px;
            gap: 50px;
        }
        
        .content-block.reverse {
            flex-direction: row-reverse;
        }
        
        .content-text, .content-media {
            flex: 1;
        }
        
        .content-text h3 {
            margin-bottom: 1.5rem;
        }
        
        /* Media containers with fixed dimensions */
        .content-media {
            min-height: 350px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .content-media img,
        .content-media video {
            width: 100%;
            height: 350px;
            object-fit: cover;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
        }
        
        /* Horizontal Timeline Section */
        .horizontal-timeline {
            background: linear-gradient(135deg, #0c1426, #1a365d);
            color: white;
            padding: 80px 0;
            overflow: hidden;
            position: relative;
        }
        
        .horizontal-timeline h2 {
            color: white;
            position: relative;
            z-index: 2;
        }
        
        .timeline-container {
            position: relative;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 60px;
        }
        
        .timeline-wrapper {
            position: relative;
            overflow: hidden;
        }
        
        .timeline-scroll {
            display: flex;
            overflow-x: auto;
            padding: 20px 0;
            scrollbar-width: thin;
            scrollbar-color: rgba(255, 255, 255, 0.5) rgba(255, 255, 255, 0.1);
            scroll-behavior: smooth;
            position: relative;
            z-index: 2;
            scroll-snap-type: x mandatory;
            gap: 30px;
        }
        
        .timeline-scroll::-webkit-scrollbar {
            height: 8px;
        }
        
        .timeline-scroll::-webkit-scrollbar-track {
            background: rgba(255, 255, 255, 0.1);
            border-radius: 10px;
        }
        
        .timeline-scroll::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.5);
            border-radius: 10px;
        }
        
        .timeline-item {
            min-width: 300px;
            flex: 0 0 300px;
            padding: 25px;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            border-radius: var(--border-radius);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
            position: relative;
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.1);
            scroll-snap-align: start;
        }
        
        .timeline-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 25px rgba(0, 0, 0, 0.3);
            background: rgba(255, 255, 255, 0.15);
        }
        
        .timeline-item:last-child {
            margin-right: 0;
        }
        
        .timeline-item h3 {
            color: #fff;
            margin-bottom: 0.5rem;
            font-size: 1.4rem;
            position: relative;
            display: inline-block;
        }
        
        .timeline-item h3::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 40px;
            height: 3px;
            background: var(--accent-color);
            border-radius: 2px;
        }
        
        .timeline-item p {
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.6;
        }
        
        /* 时间轴导航箭头 */
        .timeline-nav {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            width: 100%;
            display: flex;
            justify-content: space-between;
            pointer-events: none;
            z-index: 3;
            left: 0;
            right: 0;
        }
        
        .timeline-nav button {
            background: rgba(255, 255, 255, 0.9);
            border: none;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
            transition: var(--transition);
            pointer-events: all;
            color: var(--primary-color);
            font-size: 1.2rem;
        }
        
        .timeline-nav button:hover {
            background: white;
            transform: scale(1.1);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
        }
        
        .timeline-nav button:active {
            transform: scale(0.95);
        }
        
        .timeline-nav button:disabled {
            opacity: 0.5;
            cursor: not-allowed;
            transform: none;
        }
        
        .timeline-nav button:disabled:hover {
            background: rgba(255, 255, 255, 0.9);
            transform: none;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        }
        
        /* Technology Section - 修复文字居中问题 */
        .technology-section {
            padding: 80px 0;
        }
        
        /* 修复文字居中问题 */
        .technology-intro {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 50px;
            font-size: 1.1rem;
            width: 100%;
            padding: 0 20px;
            box-sizing: border-box;
            display: block; /* 确保是块级元素 */
        }
        
        /* 特别确保段落元素在.technology-intro中居中 */
        .technology-section .technology-intro {
            text-align: center !important;
            margin-left: auto !important;
            margin-right: auto !important;
            display: block !important;
        }
        
        .tech-content {
            display: flex;
            gap: 50px;
        }
        
        .tech-faq {
            flex: 1;
        }
        
        .tech-media {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        /* Tech media container with fixed dimensions */
        .tech-media {
            min-height: 500px;
        }
        
        .tech-media img,
        .tech-media video {
            width: 100%;
            height: 500px;
            object-fit: cover;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
        }
        
        /* FAQ Section */
        .faq-container {
            margin-bottom: 30px;
        }
        
        .faq-item {
            margin-bottom: 15px;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--box-shadow);
        }
        
        .faq-question {
            background-color: var(--light-color);
            padding: 20px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
        }
        
        .faq-question:hover {
            background-color: #e2e8f0;
        }
        
        .faq-question h3 {
            margin-bottom: 0;
            font-size: 1.3rem;
        }
        
        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }
        
        .faq-answer.active {
            padding: 20px;
            max-height: 1000px;
        }
        
        .faq-toggle {
            font-size: 1.5rem;
            font-weight: bold;
            transition: var(--transition);
        }
        
        .faq-toggle.rotate {
            transform: rotate(45deg);
        }
        
        /* Contact Section */
        .contact-section {
            background: linear-gradient(rgba(26, 54, 93, 0.9), rgba(26, 54, 93, 0.9)), url('https://i.pinimg.com/736x/06/4e/7e/064e7e2c0168e034217a339e062b366b.jpg') center/cover no-repeat;
            color: white;
            text-align: center;
            padding: 100px 0;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .contact-section .container {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }
        
        .contact-section h2 {
            color: white;
            margin-bottom: 1.5rem;
            text-align: center;
            width: 100%;
        }
        
        .contact-section p {
            max-width: 600px;
            margin: 0 auto 2.5rem;
            font-size: 1.1rem;
            text-align: center;
            width: 100%;
        }
        
        .contact-btn {
            background-color: white;
            color: var(--primary-color);
            font-size: 1.1rem;
            padding: 15px 40px;
        }
        
        .contact-btn:hover {
            background-color: #e2e8f0;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
        }
        
        /* Responsive Design */
        @media (max-width: 768px) {
            .content-block, .content-block.reverse {
                flex-direction: column;
            }
            
            .tech-content {
                flex-direction: column;
            }
            
            h1 {
                font-size: 2rem;
            }
            
            h2 {
                font-size: 1.7rem;
            }
            
            .hero {
                padding: 80px 0;
            }
            
            .content-media {
                min-height: 250px;
            }
            
            .content-media img,
            .content-media video {
                height: 250px;
            }
            
            .tech-media {
                min-height: 300px;
            }
            
            .tech-media img,
            .tech-media video {
                height: 300px;
            }
            
            /* 确保在移动设备上文字仍然居中 */
            .hero .container,
            .contact-section .container {
                align-items: center;
                text-align: center;
            }
            
            .hero h1,
            .hero p,
            .contact-section h2,
            .contact-section p {
                text-align: center;
            }
            
            /* 移动设备上的时间轴调整 */
            .timeline-container {
                padding: 0 20px;
            }
            
            .timeline-nav {
                display: none;
            }
            
            .timeline-item {
                min-width: 280px;
                flex: 0 0 280px;
            }
            
            /* 确保在移动设备上文字居中 */
            .technology-intro {
                text-align: center !important;
                margin-left: auto !important;
                margin-right: auto !important;
            }
        }