/* 基础样式重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        html, body {
            width: 100%;
            height: 100%;
            font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
            background-color: #f5f7fa;
            color: #333;
            overflow-x: hidden;
        }
        
        a {
            text-decoration: none;
            color: inherit;
        }
        
        ul, ol {
            list-style: none;
        }
        
        img {
            border: none;
            display: block;
        }
        
        /* 主容器 */
        .container {
            width: 100%;
            min-height: 100vh;
            background: linear-gradient(135deg, #1a2a6c, #3a7bd5, #00d2ff);
            position: relative;
            overflow: hidden;
        }
        
        /* 动态背景 */
        .bg-animation {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 0;
            overflow: hidden;
        }
        
        .bg-circle {
            position: absolute;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            animation: float 15s infinite ease-in-out;
        }
        
        .bg-circle:nth-child(1) {
            width: 300px;
            height: 300px;
            top: 10%;
            left: 5%;
            animation-delay: 0s;
        }
        
        .bg-circle:nth-child(2) {
            width: 200px;
            height: 200px;
            top: 60%;
            left: 80%;
            animation-delay: 3s;
        }
        
        .bg-circle:nth-child(3) {
            width: 400px;
            height: 400px;
            top: 30%;
            left: 70%;
            animation-delay: 6s;
        }
        
        .bg-circle:nth-child(4) {
            width: 250px;
            height: 250px;
            top: 70%;
            left: 10%;
            animation-delay: 9s;
        }
        
        @keyframes float {
            0%, 100% {
                transform: translateY(0) scale(1);
            }
            50% {
                transform: translateY(-20px) scale(1.05);
            }
        }
        
        /* 头部区域 */
        .header {
            position: relative;
            z-index: 10;
            padding: 30px 60px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
        }
        
        .logo-img {
            width: 180px;
            height: auto;
        }
        
        .nav-list {
            display: flex;
            gap: 40px;
        }
        
        .nav-item {
            color: rgba(255, 255, 255, 0.9);
            font-size: 16px;
            font-weight: 500;
            padding: 8px 0;
            position: relative;
            transition: color 0.3s;
        }
        
        .nav-item:hover {
            color: white;
        }
        
        .nav-item::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: white;
            transition: width 0.3s;
        }
        
        .nav-item:hover::after {
            width: 100%;
        }
        
        /* 主要内容区域 */
        .main-content {
            position: relative;
            z-index: 5;
            max-width: 1200px;
            margin: 0 auto;
            padding: 60px 20px;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }
        
        /* 标题区域 */
        .title-section {
            margin-bottom: 60px;
        }
        
        .main-title {
            font-size: 72px;
            font-weight: 800;
            color: white;
            margin-bottom: 20px;
            line-height: 1.1;
            text-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        }
        
        .main-title span {
            color: #00ffcc;
            position: relative;
        }
        
        .main-title span::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: #00ffcc;
            border-radius: 2px;
        }
        
        .sub-title {
            font-size: 24px;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 40px;
            font-weight: 300;
        }
        
        /* 软件属性信息 */
        .software-info {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-bottom: 30px;
            color: rgba(255, 255, 255, 0.8);
            font-size: 16px;
        }
        
        .info-item {
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        
        .info-label {
            font-size: 14px;
            margin-bottom: 5px;
            opacity: 0.8;
        }
        
        .info-value {
            font-size: 18px;
            font-weight: 600;
        }
        
        /* 功能展示区域 */
        .features-showcase {
            width: 100%;
            margin-bottom: 80px;
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        
        .features-nav {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        
        .feature-nav-item {
            display: flex;
            align-items: center;
            padding: 12px 20px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 30px;
            color: white;
            font-size: 16px;
            cursor: pointer;
            transition: all 0.3s;
            border: 1px solid transparent;
        }
        
        .feature-nav-item:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }
        
        .feature-nav-item.active {
            background: rgba(255, 255, 255, 0.25);
            border-color: rgba(255, 255, 255, 0.5);
        }
        
        .feature-nav-icon {
            width: 24px;
            height: 24px;
            margin-right: 8px;
        }
        
        .feature-display {
            width: 100%;
            max-width: 900px;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            border-radius: 20px;
            padding: 40px;
            display: flex;
            align-items: center;
            gap: 40px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            min-height: 400px;
        }
        
        .feature-image {
            flex: 1;
            height: 320px;
            border-radius: 12px;
            overflow: hidden;
            background: white;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .feature-image img {
            max-width: 100%;
            max-height: 100%;
            object-fit: contain;
        }
        
        .feature-content {
            flex: 1;
            text-align: left;
            color: white;
        }
        
        .feature-title {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 20px;
        }
        
        .feature-desc {
            font-size: 18px;
            line-height: 1.6;
            margin-bottom: 30px;
            opacity: 0.9;
        }
        
        .feature-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.2);
            color: white;
            font-size: 16px;
            font-weight: 600;
            padding: 12px 24px;
            border-radius: 30px;
            transition: all 0.3s;
            border: 1px solid rgba(255, 255, 255, 0.3);
        }
        
        .feature-btn:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: translateY(-2px);
        }
        
        /* 下载区域 */
        .download-section {
            width: 100%;
            max-width: 700px;
            margin-bottom: 60px;
        }
        
        .download-card {
            background: white;
            border-radius: 20px;
            padding: 50px 40px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .download-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 8px;
            background: linear-gradient(90deg, #00ffcc, #3a7bd5);
        }
        
        .download-title {
            font-size: 36px;
            color: #1a2a6c;
            margin-bottom: 15px;
            font-weight: 700;
        }
        
        .download-subtitle {
            font-size: 20px;
            color: #3a7bd5;
            margin-bottom: 20px;
            font-weight: 600;
        }
        
        .download-desc {
            font-size: 16px;
            color: #666;
            margin-bottom: 40px;
            line-height: 1.6;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .download-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #00ffcc, #3a7bd5);
            color: white;
            font-size: 20px;
            font-weight: 700;
            padding: 18px 40px;
            border-radius: 50px;
            box-shadow: 0 10px 20px rgba(58, 123, 213, 0.3);
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
            margin-bottom: 30px;
        }
        
        .download-btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: left 0.5s;
        }
        
        .download-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 25px rgba(58, 123, 213, 0.4);
        }
        
        .download-btn:hover::before {
            left: 100%;
        }
        
        .download-btn svg {
            width: 24px;
            height: 24px;
            margin-right: 10px;
        }
        
        /* 底部区域 */
        .footer {
            position: relative;
            z-index: 10;
            padding: 30px 0;
            text-align: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .main-title {
                font-size: 52px;
            }
            
            .sub-title {
                font-size: 20px;
            }
            
            .feature-display {
                flex-direction: column;
                text-align: center;
            }
            
            .feature-content {
                text-align: center;
            }
            
            .software-info {
                gap: 30px;
            }
        }
        
        @media (max-width: 768px) {
            .header {
                padding: 20px;
                flex-direction: column;
                gap: 20px;
            }
            
            .nav-list {
                gap: 20px;
            }
            
            .main-title {
                font-size: 42px;
            }
            
            .features-nav {
                gap: 15px;
            }
            
            .feature-nav-item {
                padding: 10px 15px;
                font-size: 14px;
            }
            
            .feature-display {
                padding: 30px 20px;
            }
            
            .download-card {
                padding: 40px 20px;
            }
            
            .software-info {
                flex-direction: column;
                gap: 15px;
            }
        }