:root {
            --primary: #4cd197;
            --primary-dark: #3bbd84;
            --secondary: #4a86e8;
            --text: #333333;
            --text-light: #777777;
            --bg: #f8f8f8;
            --card-bg: #ffffff;
            --header-bg: #ffffff;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
            --transition: all 0.3s ease;
            --radius: 12px;
        }

        .dark-mode {
            --primary: #4cd197;
            --primary-dark: #3bbd84;
            --secondary: #4a86e8;
            --text: #e0e0e0;
            --text-light: #aaaaaa;
            --bg: #121212;
            --card-bg: #1e1e1e;
            --header-bg: #1e1e1e;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            transition: var(--transition);
        }

        body {
            background-color: var(--bg);
            color: var(--text);
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
            line-height: 1.6;
            overflow-x: hidden;
            background-image: radial-gradient(circle at 10% 20%, rgba(76, 209, 151, 0.05) 0%, rgba(76, 209, 151, 0) 20%);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header Styles */
        .header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
            background-color: var(--header-bg);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08); /* 调整为更柔和的阴影 */
        }

        .logo {
            font-size: 22px;
            font-weight: bold;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .logo i {
            color: var(--primary);
        }

        .nav-links {
            display: flex;
            gap: 30px;
            align-items: center;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--text);
            font-weight: 500;
            position: relative;
        }

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

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary);
            transition: var(--transition);
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        /* Theme Toggle */
        #theme-toggle {
            background-color: var(--primary); /* 按钮背景色 */
            border: none;
            border-radius: 50%; /* 圆形按钮 */
            width: 40px; /* 按钮宽度 */
            height: 40px; /* 按钮高度 */
            display: flex;
            justify-content: center;
            align-items: center;
            color: #fff; /* 图标颜色 */
            font-size: 1.2rem;
            cursor: pointer;
            margin-left: 20px;
            transition: background-color 0.3s ease, transform 0.3s ease;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
        }

        #theme-toggle:hover {
            background-color: var(--secondary); /* 悬停背景色 */
            transform: scale(1.1); /* 悬停放大效果 */
        }

        #theme-toggle i {
            transition: transform 0.3s ease;
        }

        body.dark-mode #theme-toggle i.fa-moon {
            transform: rotate(360deg); /* 暗黑模式下月亮图标旋转 */
        }

        body:not(.dark-mode) #theme-toggle i.fa-sun {
            transform: rotate(360deg); /* 亮色模式下太阳图标旋转 */
        }

        .mobile-menu {
            display: none;
            font-size: 24px;
            cursor: pointer;
        }

        /* Hero Section */
        .hero {
            display: flex;
            align-items: center;
            padding: 80px 0;
            gap: 40px;
        }

        .hero-content {
            flex: 1;
        }

        .hero-image {
            flex: 1;
            display: flex;
            justify-content: center;
            animation: float 6s ease-in-out infinite;
        }

        .hero-image img {
            max-width: 100%;
            border-radius: var(--radius);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08); /* 调整为更柔和的阴影 */
        }

        .hero h1 {
            font-size: 42px;
            font-weight: 700;
            margin-bottom: 15px;
            line-height: 1.2;
        }

        .hero h1 span {
            color: var(--primary);
        }

        .hero h2 {
            font-size: 24px;
            font-weight: 400;
            margin-bottom: 20px;
            color: var(--text-light);
        }

        .hero p {
            font-size: 18px;
            margin-bottom: 30px;
            color: var(--text-light);
            max-width: 600px;
        }

        .buttons {
            display: flex;
            gap: 15px;
            margin: 30px 0;
            flex-wrap: wrap;
        }

        .btn {
            padding: 14px 30px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            text-decoration: none;
            text-align: center;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: none;
            transition: var(--transition);
        }

        .btn-primary {
            background-color: var(--primary);
            color: white;
            box-shadow: 0 4px 15px rgba(76, 209, 151, 0.3);
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(76, 209, 151, 0.4);
        }

        .btn-secondary {
            background-color: var(--card-bg);
            color: var(--text);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08); /* 调整为更柔和的阴影 */
        }

        .btn-secondary:hover {
            background-color: var(--bg);
            transform: translateY(-3px);
        }
        
        .btn-wearos {
            background-color: #4285F4;
            color: white;
            box-shadow: 0 4px 15px rgba(66, 133, 244, 0.3);
        }

        .btn-wearos:hover {
            background-color: #3367D6;
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(66, 133, 244, 0.4);
        }

        /* Features Section */
        .section {
            padding: 80px 0;
        }

        .section-title {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-title h2 {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .section-title p {
            font-size: 18px;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }

        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .feature-card {
            background-color: var(--card-bg);
            padding: 30px;
            border-radius: var(--radius);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08); /* 调整为更柔和的阴影 */
            text-align: center;
            transition: var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }

        .feature-card i {
            font-size: 48px;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .feature-card h3 {
            font-size: 20px;
            margin-bottom: 15px;
        }

        .feature-card p {
            color: var(--text-light);
            font-size: 16px;
        }

        /* Stats */
        .stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin: 40px 0;
        }

        .stat-card {
            text-align: center;
            padding: 30px;
            background-color: var(--card-bg);
            border-radius: var(--radius);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08); /* 调整为更柔和的阴影 */
        }

        .stat-card h3 {
            font-size: 42px;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .stat-card p {
            color: var(--text-light);
            font-size: 18px;
        }

        /* Download Section */
        .download-section {
            background: linear-gradient(135deg, #4cd197, #4a86e8);
            color: white;
            border-radius: var(--radius);
            padding: 60px 40px;
            text-align: center;
            margin: 80px 0;
            box-shadow: 0 15px 30px rgba(76, 209, 151, 0.3);
        }

        .download-section h2 {
            font-size: 36px;
            margin-bottom: 20px;
        }

        .download-section p {
            font-size: 18px;
            max-width: 700px;
            margin: 0 auto 30px;
            opacity: 0.9;
        }
        
        /* Team Section - 双列布局 */
        .team-section {
            padding: 80px 0;
            background-color: var(--bg);
        }
        
        .team-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr); /* 双列布局 */
            gap: 30px;
            max-width: 900px;
            margin: 0 auto;
        }
        
        .team-member {
            background-color: var(--card-bg);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            text-align: center;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 20px;
        }
        
        .team-member:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .member-photo {
            width: 150px;
            height: 150px;
            border-radius: 50%;
            background-size: cover;
            background-position: center;
            margin-bottom: 20px;
            border: 3px solid var(--primary);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            transition: all 0.3s ease;
        }
        
        .team-member:hover .member-photo {
            transform: scale(1.05);
            box-shadow: 0 8px 25px rgba(0,0,0,0.2);
            border-color: var(--secondary);
        }
        
        .member-info {
            text-align: center;
        }
        
        .member-info h3 {
            font-size: 18px;
            margin-bottom: 5px;
        }
        
        .member-info p {
            color: var(--text-light);
            font-size: 14px;
            margin-bottom: 15px;
        }
        
        .qq-info {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            color: #12B7F5;
            font-weight: 500;
            transition: all 0.3s ease;
        }
        
        .team-member:hover .qq-info {
            transform: translateX(5px);
            color: var(--primary);
        }

        /* Footer */
        .footer {
            background-color: var(--header-bg);
            padding: 60px 0 30px;
            margin-top: 40px;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.05);
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-column h3 {
            font-size: 20px;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-column h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 2px;
            background-color: var(--primary);
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            color: var(--text-light);
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-links a:hover {
            color: var(--primary);
            transform: translateX(5px);
        }

        .qq-contact {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 15px;
            color: var(--text-light);
        }

        .qq-contact i {
            color: var(--primary);
            font-size: 18px;
            width: 24px;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(0, 0, 0, 0.1);
            color: var(--text-light);
            font-size: 14px;
        }

        /* Animations */
        @keyframes float {
            0% { transform: translateY(0px); }n            50% { transform: translateY(-20px); }n            100% { transform: translateY(0px); }n        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }n            to { opacity: 1; transform: translateY(0); }n        }
        
        .animated {
            animation: fadeIn 0.6s ease-out forwards;
        }

        /* Responsive Design */
        @media (max-width: 992px) {
            .hero {
                flex-direction: column;
                text-align: center;
            }
            
            .hero p {
                margin: 0 auto 30px;
            }
            
            .buttons {
                justify-content: center;
            }
            
            .team-grid {
                grid-template-columns: 1fr;
                max-width: 500px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: var(--header-bg);
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            }
            
            .mobile-menu {
                display: block;
            }
            
            .hero h1 {
                font-size: 36px;
            }
            
            .hero h2 {
                font-size: 20px;
            }
            
            .section-title h2 {
                font-size: 28px;
            }
            
            .section-title p {
                font-size: 16px;
            }
            
            .feature-card {
                padding: 25px;
            }
            
            .team-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 480px) {
            .hero h1 {
                font-size: 28px;
            }
            
            .buttons {
                flex-direction: column;
            }
            
            .btn {
                width: 100%;
            }
            
            .stats {
                grid-template-columns: 1fr;
            }
        }

        /* Compatibility Section */
        .compatibility {
            background-color: var(--card-bg);
            border-radius: var(--radius);
            padding: 40px;
            margin: 60px 0;
            box-shadow: var(--shadow);
            display: flex;
            align-items: center;
            gap: 40px;
        }

        .compatibility-content {
            flex: 1;
        }

        .compatibility-image {
            flex: 1;
        }

        .compatibility-image img {
            max-width: 100%;
            border-radius: 20px;
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
        }

        .devices {
            display: flex;
            gap: 15px;
            margin-top: 20px;
            flex-wrap: wrap;
        }

        .device {
            background-color: var(--bg);
            padding: 10px 15px;
            border-radius: 50px;
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .device i {
            color: var(--primary);
        }

        /* Watch Frame Styles */
        .watch-frame {
             width: 300px; /* 保持宽度 */
             height: 350px; /* 调整为长方形高度 */
             border: 10px solid #333; /* 保持边框 */
             border-radius: 40px; /* 保持圆角 */
             background-color: #000; /* 保持背景色 */
             display: flex;
             justify-content: center;
             align-items: center;
             overflow: hidden;
             box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
             margin: 20px auto;
         }

        .watch-screen {
            width: 100%;
            height: 100%;
            overflow-y: scroll;
            -webkit-overflow-scrolling: touch;
            border-radius: 35px; /* 调整屏幕圆角以适应长方形 */
            background-color: #fff; /* 恢复屏幕背景色 */
        }

        .watch-screen img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* 隐藏滚动条 */
        .watch-screen::-webkit-scrollbar {
            display: none;
        }

        .watch-screen {
            -ms-overflow-style: none;  /* IE and Edge */
            scrollbar-width: none;  /* Firefox */
        }