* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
        }

        
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --secondary: #0ea5e9;
            --accent: #06b6d4;
            --quantum: #2563eb;
            --sustainability: #10b981;
            --supply-chain: #f59e0b;
            --rf: #ec4899;
            --text: #000000;
            --text-light: #6b7280;
            --background: #ffffff;
            --surface: #f8fafc;
            --border: #e5e7eb;
            --card-bg: #ffffff;
        }

        body {
            color: var(--text);
            line-height: 1.6;
            overflow-x: hidden;
            background: var(--background);
            
        }



        
        .container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 导航栏 */
        .navbar {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: all 0.3s ease;
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
            min-height: 70px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            text-decoration: none;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--quantum));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
            font-size: 1.2rem;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 2rem;
            margin: 0 2rem;
        }

        .nav-link {
            text-decoration: none;
            color: var(--text);
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
            white-space: nowrap;
        }

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

        .nav-actions {
            display: flex;
            gap: 1rem;
            flex-shrink: 0;
        }

        .btn {
            padding: 0.75rem 1.5rem;
            border-radius: 8px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
            font-size: 0.95rem;
            white-space: nowrap;
        }

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

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(37, 99, 235, 0.3);
        }

        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--text);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.5rem;
            z-index: 1001;
        }

        /* 英雄区域 */
        .hero {
            padding: 160px 0 100px;
            /* background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%); */
            position: relative;
            overflow: hidden;
            min-height: 100vh;
            display: flex;
            align-items: center;
        }

        .hero-video-container {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 1;
            overflow: hidden;
        }

        .hero-video {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.3; /* 降低不透明度，避免影响文字阅读 */
        }

        .hero-video-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(45deg, 
                rgba(37, 99, 235, 0.4) 0%, 
                rgba(14, 165, 233, 0.3) 50%, 
                rgba(6, 182, 212, 0.2) 100%);
            z-index: 2;
        }


        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            /* background: 
            radial-gradient(circle at 20% 80%, rgba(37, 99, 235, 0.1) 0%, transparent 50%),
            radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.05) 0%, transparent 50%); */
        }

        .hero-content {
            position: relative;
            z-index: 3;
            max-width: 100%;
            width: 100%; 
        }

        .hero-badge {
            display: inline-block;
            background: var(--quantum);
            color: white;
            padding: 0.5rem 1.5rem;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 2rem;
            /* background: rgba(255, 255, 255, 0.2); */
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .hero-title {
            font-size: clamp(3rem, 8vw, 6rem);
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 1.5rem;
            color: var(--card-bg);
        }

        .hero-description {
            font-size: clamp(1rem, 2vw, 1.5rem);
            color: var(--text-light);
            margin-bottom: 2.5rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.9);
            text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
        }

        /* 3D展示区域 */
        .threejs-section {
            padding: 100px 0;
            background: var(--surface);
            position: relative;
        }

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

        .section-subtitle {
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 2px;
            font-size: 1rem;
        }

        .section-title {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            color: var(--text);
        }

        .section-description {
            color: var(--text-light);
            font-size: 1.2rem;
            line-height: 1.7;
        }

        .threejs-container {
            position: relative;
            height: 600px;
            border-radius: 20px;
            overflow: hidden;
            background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
            border: 1px solid var(--border);
            margin-bottom: 3rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }

        #threejs-canvas {
            width: 100%;
            height: 100%;
            display: block;
        }

        .threejs-controls {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 2rem;
        }

        .control-btn {
            background: var(--card-bg);
            border: 1px solid var(--border);
            color: var(--text);
            padding: 1rem 2rem;
            border-radius: 10px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-weight: 500;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        }

        .control-btn:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: white;
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(37, 99, 235, 0.2);
        }

        /* 滚屏滑动画廊 */
        .gallery-section {
            padding: 100px 0;
            background: var(--background);
            overflow: hidden;
        }

        .gallery-container {
            position: relative;
            height: 400px;
            border-radius: 20px;
            cursor: grab;
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }

        .gallery-container:active {
            cursor: grabbing;
        }

        .gallery-track {
            display: flex;
            height: 100%;
            transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        .gallery-item {
            flex: 0 0 33.333%;
            min-width: 33.333%;
            padding: 20px;
            user-select: none;
            box-sizing: border-box;
        }

        .gallery-image {
            width: 100%;
            height: 100%;
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.5rem;
            font-weight: 600;
            transition: all 0.3s ease;
            border: 3px solid transparent;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
            position: relative;
            overflow: hidden;
        }

        .gallery-image::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            opacity: 0.9;
            z-index: -1;
        }

        .gallery-item:hover .gallery-image {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
            border-color: var(--accent);
        }

        .gallery-content {
            text-align: center;
            z-index: 2;
            position: relative;
        }

        .gallery-icon {
            font-size: 3rem;
            margin-bottom: 1rem;
            display: block;
        }

        .gallery-title {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .gallery-desc {
            font-size: 0.9rem;
            opacity: 0.9;
        }

        .gallery-nav {
            display: flex;
            justify-content: center;
            gap: 1rem;
            margin-top: 2rem;
        }

        .gallery-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--border);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .gallery-dot.active {
            background: var(--primary);
            transform: scale(1.2);
        }

        /* 技术领域网格 */
        .domains-section {
            padding: 100px 0;
            background: var(--surface);
        }

        .domains-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2rem;
        }

        .domain-card {
            background: var(--card-bg);
            padding: 2.5rem;
            border-radius: 20px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            border: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }

        .domain-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
        }

        .domain-card.software::before { background: var(--rf); }
        .domain-card.electronics::before { background: var(--rf); }
        .domain-card.rf::before { background: var(--rf); }
        .domain-card.robotics::before { background: var(--accent); }
        .domain-card.cfd::before { background: var(--accent); }
        .domain-card.mechanics::before { background: var(--accent); }
        .domain-card.finance::before { background: var(--sustainability); }
        .domain-card.supply-chain::before { background: var(--sustainability); }
        .domain-card.sustainability::before { background: var(--sustainability); }

        .domain-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
        }

        .domain-icon {
            width: 60px;
            height: 60px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: white;
            font-size: 1.5rem;
        }

        .domain-icon.software { background: var(--rf); }
        .domain-icon.electronics { background: var(--rf); }
        .domain-icon.rf { background: var(--rf); }
        .domain-icon.robotics { background: var(--accent); }
        .domain-icon.cfd { background: var(--accent); }
        .domain-icon.mechanics { background: var(--accent); }
        .domain-icon.finance { background: #10b981; }
        .domain-icon.supply-chain { background: #10b981; }
        .domain-icon.sustainability { background: #10b981; }

        .domain-title {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--text);
        }

        .domain-description {
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 1.5rem;
        }

        .domain-features {
            list-style: none;
        }

        .domain-features li {
            padding: 0.5rem 0;
            color: var(--text-light);
            position: relative;
            padding-left: 1.5rem;
        }

        .domain-features li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: bold;
        }

        /* CTA区域 */
        .cta {
            padding: 120px 0;
            background: linear-gradient(135deg, var(--primary), var(--quantum));
            color: white;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-title {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 2rem;
        }

        .cta-description {
            font-size: 1.3rem;
            margin-bottom: 3rem;
            opacity: 0.9;
            line-height: 1.7;
        }

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

        .btn-light:hover {
            background: rgba(255, 255, 255, 0.9);
            transform: translateY(-2px);
        }

        /* 移动端菜单 */
        .mobile-menu {
            position: fixed;
            top: 0;
            left: -100%;
            width: 80%;
            height: 100vh;
            background: var(--surface);
            border-right: 1px solid var(--border);
            transition: all 0.3s ease;
            z-index: 999;
            padding-top: 80px;
            box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
        }

        .mobile-menu.active {
            left: 0;
        }

        .mobile-menu .nav-link {
            display: block;
            padding: 1rem 2rem;
            border-bottom: 1px solid var(--border);
            color: var(--text);
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
        }

        .mobile-menu .nav-link:hover {
            background: var(--primary);
            color: white;
        }

        .mobile-menu .nav-actions {
            display: flex;
            flex-direction: column;
            padding: 2rem;
            gap: 1rem;
        }

        .mobile-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 998;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .mobile-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        /* 响应式设计 */
        @media (max-width: 1200px) {
            .nav-menu {
                gap: 1.5rem;
                margin: 0 1rem;
            }
            
            .hero-title {
                font-size: 3rem;
            }
        }

        @media (max-width: 992px) {
            .nav-menu {
                display: none;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .nav-actions {
                display: none;
            }
            
            .hero-title {
                font-size: 2.5rem;
            }
            
            .gallery-item {
                flex: 0 0 50%;
                min-width: 50%;
            }
        }



        @media (max-width: 768px) {
            .nav-container {
                padding: 0.8rem 0;
            }

            .hero-video {
                opacity: 0.2; /* 移动端进一步降低不透明度 */
            }

            .hero-video-overlay {
                background: linear-gradient(45deg, 
                    rgba(37, 99, 235, 0.5) 0%, 
                    rgba(14, 165, 233, 0.4) 50%, 
                    rgba(6, 182, 212, 0.3) 100%);
            }

            .logo {
                font-size: 1.3rem;
            }
            
            .logo-icon {
                width: 35px;
                height: 35px;
                font-size: 1rem;
            }
            
            .hero {
                padding: 140px 0 80px;
            }
            
            .hero-title {
                font-size: 2.2rem;
            }
            
            .hero-description {
                font-size: 1.1rem;
            }
            
            .section-title {
                font-size: 2.2rem;
            }
            
            .threejs-container {
                height: 400px;
            }
            
            .gallery-item {
                flex: 0 0 100%;
                min-width: 100%;
            }
            
            .cta-title {
                font-size: 2.5rem;
            }
            
            .btn {
                padding: 0.7rem 1.2rem;
                font-size: 0.9rem;
            }
        }

        /* 添加视频加载时的占位符 */
        .video-placeholder {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, var(--primary) 0%, var(--quantum) 100%);
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .video-loader {
            width: 50px;
            height: 50px;
            border: 3px solid rgba(255, 255, 255, 0.3);
            border-top: 3px solid white;
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }


        .fade-in {
            animation: fadeInUp 0.8s ease-out;
        }

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

        .loader {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 50px;
            height: 50px;
            border: 3px solid rgba(37, 99, 235, 0.3);
            border-top: 3px solid var(--primary);
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            0% { transform: translate(-50%, -50%) rotate(0deg); }
            100% { transform: translate(-50%, -50%) rotate(360deg); }
        }

/* 底部备案区域 */
.bottom{width:100%;float:left;background:#f2f2f2;height:auto;height: auto;min-height: auto;}
.bottom .bottom-t{width:100%;float:left;line-height: 57px;height: 60px;border-bottom:3px solid #054696;font-size:0;text-align:center;}
.bottom .bottom-t a{font-size: 16px;color:#000;margin: 0 17px;}
.bottom .bottom-b{width:100%;float:left;padding-top: 23px;padding-bottom: 34px;text-align:center;}
.bottom .bottom-bl{width: 353px;float:left;padding-left: 80px;font-size:0;text-align:center;}
.bottom .bottom-bl img{float:left;margin-right: 23px;}
.bottom .bottom-bl-img2{position: relative;top:0.1875rem}
.bottom .bottom-bm{width: 100%;float:left;font-size: 14px;line-height: 24px;color:#000;}
.bottom .bottom-bm a{color:#000;}
.bottom .bottom-bm span{margin-right: 15px;}
.bottom .bottom-bm img{position: relative;top:0.3125rem;margin-right: 0.125rem;}
.bottom .bottom-br{width: 165px;float:left;padding-top: 5px;}
.newpage-wrapper .bottom{margin-top: 60px;}
.bottom p{margin-bottom: 0}