* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #0c1445 0%, #1b1b6d 100%);
            color: #fff;
            overflow-x: hidden;
            min-height: 100vh;
            position: relative;
        }
        
        /* 导航栏样式 */
        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 8%;
            background: rgba(10, 15, 35, 0.7);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .logo-img {
            height: 45px;
        }
        
        .logo-text {
            font-size: 28px;
            font-weight: 700;
            background: linear-gradient(90deg, #4e9af1, #8a64eb);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        
        .nav-links {
            display: flex;
            gap: 40px;
        }
        
        .nav-links a {
            color: #e0e0ff;
            text-decoration: none;
            font-size: 18px;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 8px 15px;
            border-radius: 30px;
        }
        
        .nav-links a:hover {
            background: rgba(78, 154, 241, 0.15);
            color: #fff;
        }
        
        /* 轮播横幅容器 - 性能优化 */
        .carousel-container {
            position: relative;
            height: 100vh;
            overflow: hidden;
            margin: 0 auto;
            max-width: 100%;
        }
        
        .carousel {
            position: relative;
            height: 100%;
        }
        
        .slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0;
            transition: opacity 0.8s ease-in-out;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        
        .slide.active {
            opacity: 1;
            z-index: 10;
        }
        
        /* 视频背景幻灯片 - 性能优化 */
        .video-slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: -1;
            background: linear-gradient(135deg, #0c1445 0%, #1b1b6d 100%);
        }
        
        /* 横幅内容区域 */
        .banner-content {
            position: absolute;
            top: 35%;
            left: 10%;
            text-align: left;
            z-index: 20;
            max-width: 650px;
            padding: 40px;
            animation: fadeInUp 1s ease-out;
        }
        
        .bigTitleWord {
            font-size: 80px;
            font-weight: 800;
            background: linear-gradient(90deg, #ffd166, #ff9a3c, #ff2e63);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 15px;
            letter-spacing: 2px;
            text-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        }
        
        .line {
            width: 100px;
            height: 5px;
            background: linear-gradient(90deg, #ffd166, #ff2e63);
            margin: 20px 0;
            border-radius: 5px;
        }
        
        .midTitleWord {
            font-size: 48px;
            font-weight: 700;
            margin-bottom: 15px;
            color: #fff;
            letter-spacing: 1px;
        }
        
        .smaTitleWord {
            font-size: 22px;
            color: #e0e0ff;
            line-height: 1.6;
            max-width: 500px;
        }
        
        /* 下载按钮区域 - 修复对齐问题 */
        .download-section {
            position: absolute;
            top: 10%;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            text-align: center;
            padding: 20px 30px;
            width: 90%;
            max-width: 800px;
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        
        .download-section h1 {
            font-size: 50px;
            margin-bottom: 15px;
            color: #fff;
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
            font-weight: 700;
            letter-spacing: 2px;
        }
        
        .download-section h2 {
            font-size: 24px;
            margin-bottom: 40px;
            color: #b0b0ff;
            font-weight: 400;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
        }
        
        .download-buttons {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-top: 10px;
            width: 100%;
        }
        
        /* 下载按钮样式 - 修复对齐问题 */
        .download-btn {
            display: flex;
            align-items: center;
            padding: 15px 30px;
            border-radius: 8px;
            text-decoration: none;
            transition: all 0.3s ease;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            width: 220px;
            height: 70px;
            position: relative;
        }
        
        .download-btn:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        }
        
        .download-btn i {
            font-size: 36px;
            margin-right: 15px;
            color: #fff;
        }
        
        .btn-content {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
        }
        
        .btn-content span {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
        }
        
        .version-info {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-top: 15px;
            width: 100%;
        }
        
        .version-item {
            font-size: 14px;
            color: #b0b0ff;
            text-align: center;
        }
        
        /* 推广区域 */
        .promo-section {
            background: rgba(10, 15, 35, 0.9);
            padding: 60px 8%;
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .promo-content {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .promo-content h2 {
            font-size: 32px;
            margin-bottom: 25px;
            color: #fff;
        }
        
        .promo-content p {
            font-size: 18px;
            line-height: 1.8;
            color: #b0b0ff;
            margin-bottom: 30px;
        }
        
        /* 页脚样式 */
        footer {
            background: rgba(5, 10, 25, 0.95);
            padding: 30px 8%;
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .footer-links {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-bottom: 25px;
            flex-wrap: wrap;
        }
        
        .footer-links a {
            color: #b0b0ff;
            text-decoration: none;
            transition: color 0.3s ease;
            font-size: 16px;
        }
        
        .footer-links a:hover {
            color: #4e9af1;
        }
        
        .copyright {
            color: #8a8ac4;
            font-size: 14px;
            margin-top: 20px;
            line-height: 1.6;
        }
        
        /* 动画效果 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(50px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .download-buttons {
                flex-direction: column;
                align-items: center;
            }
            
            .download-btn {
                width: 100%;
                max-width: 260px;
            }
            
            .banner-content {
                left: 5%;
                top: 45%;
                padding: 20px;
                max-width: 500px;
            }
            
            .bigTitleWord {
                font-size: 60px;
            }
            
            .midTitleWord {
                font-size: 36px;
            }
            
            .nav-links {
                display: none;
            }
            
            .version-info {
                flex-direction: column;
                gap: 10px;
            }
        }
        
        @media (max-width: 768px) {
            .carousel-container {
                height: 90vh;
            }
            
            .banner-content {
                top: 50%;
                left: 0;
                right: 0;
                text-align: center;
                padding: 15px;
                max-width: 100%;
            }
            
            .bigTitleWord {
                font-size: 48px;
            }
            
            .midTitleWord {
                font-size: 28px;
            }
            
            .smaTitleWord {
                font-size: 18px;
                max-width: 100%;
            }
            
            .line {
                margin: 15px auto;
            }
            
            .download-section {
                padding: 15px;
                top: 10%;
            }
            
            .download-section h1 {
                font-size: 32px;
            }
            
            .download-section h2 {
                font-size: 18px;
            }
            
            .download-btn {
                height: 60px;
                padding: 12px 20px;
            }
            
            .download-btn i {
                font-size: 28px;
            }
        }
        
        @media (max-width: 480px) {
            .bigTitleWord {
                font-size: 36px;
            }
            
            .midTitleWord {
                font-size: 22px;
            }
            
            .smaTitleWord {
                font-size: 16px;
            }
            
            .download-btn {
                height: 55px;
                padding: 10px 15px;
            }
            
            .download-btn i {
                font-size: 24px;
                margin-right: 10px;
            }
            
            .btn-content span {
                font-size: 16px;
            }
            
            .logo-img {
                height: 35px;
            }
            
            .logo-text {
                font-size: 20px;
            }
            
            .download-section h1 {
                font-size: 28px;
            }
            
            .download-section h2 {
                font-size: 16px;
            }
        }