:root {
            --primary-blue: #1a73e8;
            --dark-blue: #0d47a1;
            --light-blue: #e8f0fe;
            --accent-blue: #4285f4;
            --text-dark: #202124;
            --text-light: #5f6368;
            --white: #ffffff;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.6;
            color: var(--text-dark);
            background-color: var(--white);
        }

        /* 导航栏 */
        .navbar {
            position: fixed;
            top: 0;
            width: 100%;
            background-color: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(8px);
            z-index: 1000;
            padding: 1.2rem 0;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: black;
            display: flex;
            align-items: center;
            text-decoration: none;
        }

        .logo-icon {
            width: 50px;
            height: 50px;
            margin-right: 10px;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 2.5rem;
        }

        .nav-menu a {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 500;
            font-size: 1.05rem;
            transition: all 0.3s;
            position: relative;
        }

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

        .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary-blue);
            transition: width 0.3s;
        }

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

        .cta-button {
            padding: 0.8rem 1.8rem;
            background-color: var(--primary-blue);
            color: var(--white);
            border-radius: 4px;
            font-weight: 500;
            transition: all 0.3s;
            text-decoration: none;
        }

        .cta-button:hover {
            background-color: var(--dark-blue);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(26, 115, 232, 0.2);
        }

        /* 英雄区域 */
        .hero {
            height: 100vh;
            background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
            display: flex;
            align-items: center;
            color: var(--white);
            padding-top: 80px;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,0 L100,0 L100,100 Q50,80 0,100 Z" fill="rgba(255,255,255,0.05)"/></svg>');
            background-size: 100% 100%;
            opacity: 0.2;
        }

        .hero-content {
            max-width: 700px;
            z-index: 1;
        }

        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 1.5rem;
            font-weight: 700;
            line-height: 1.2;
        }

        .hero p {
            font-size: 1.2rem;
            margin-bottom: 2.5rem;
            opacity: 0.9;
            line-height: 1.7;
        }

        .hero-buttons {
            display: flex;
            gap: 1.5rem;
        }

        .btn {
            padding: 0.9rem 2rem;
            border-radius: 4px;
            font-weight: 500;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s;
            text-decoration: none;
            display: inline-block;
        }

        .btn-primary {
            background-color: var(--primary-blue);
            color: var(--white);
            align-items: center;
            display: flex;
        }

        .btn-primary:hover {
            background-color: rgba(255, 255, 255, 0.9);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
            cursor: pointer;
        }

        .btn-outline {
            background-color: transparent;
            color: var(--white);
            border: 1px solid var(--white);
        }

        .btn-outline:hover {
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        .hero-image {
            position: absolute;
            right: 0;
            bottom: 0;
            width: 50%;
            max-width: 700px;
            z-index: 0;
            opacity: 0.9;
        }

        /* 产品部分 */
        .section {
            padding: 6rem 0;
        }

        .section-title {
            text-align: center;
            font-size: 2.5rem;
            margin-bottom: 1rem;
            color: var(--text-dark);
            font-weight: 600;
        }

        .section-subtitle {
            text-align: center;
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 700px;
            margin: 0 auto 3rem;
            line-height: 1.7;
        }

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

        .products-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2.5rem;
            margin-top: 3rem;
        }

        .product-card {
            background-color: var(--white);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            transition: all 0.3s;
        }

        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
        }

        .product-image {
            height: 220px;
            background-color: var(--light-blue);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 5rem;
            color: var(--primary-blue);
        }

        .product-content {
            padding: 1.8rem;
        }

        .product-title {
            font-size: 1.4rem;
            margin-bottom: 0.8rem;
            color: var(--text-dark);
            font-weight: 600;
        }

        .product-description {
            color: var(--text-light);
            margin-bottom: 1.5rem;
            line-height: 1.6;
        }

        .product-link {
            color: var(--primary-blue);
            font-weight: 500;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            transition: all 0.3s;
        }

        .product-link:hover {
            color: var(--dark-blue);
        }

        .product-link i {
            margin-left: 0.5rem;
            transition: transform 0.3s;
        }

        .product-link:hover i {
            transform: translateX(3px);
        }

        /* 关于我们 */
        .about {
            background-color: var(--light-blue);
        }

        .about-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .about-text h2 {
            font-size: 2.2rem;
            margin-bottom: 1.5rem;
            color: var(--text-dark);
            font-weight: 600;
        }

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

        .about-stats {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2rem;
            margin-top: 2rem;
        }

        .stat-item {
            background-color: var(--white);
            padding: 1.5rem;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.03);
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary-blue);
            margin-bottom: 0.5rem;
        }

        .stat-label {
            color: var(--text-light);
            font-size: 0.95rem;
        }

        .about-image {
            position: relative;
            height: 500px;
            background-color: var(--white);
            border-radius: 12px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

         .robot-illustration {
                display: flex;
                align-items: center;
        }

        /* 特性部分 */
        .features {
            background-color: var(--white);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-top: 3rem;
        }

        .feature-card {
            background-color: var(--white);
            border-radius: 12px;
            padding: 2rem;
            text-align: center;
            transition: all 0.3s;
            border: 1px solid rgba(0, 0, 0, 0.05);
        }

        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            border-color: rgba(66, 133, 244, 0.2);
        }

        .feature-icon {
            width: 80px;
            height: 80px;
            background-color: var(--light-blue);
            border-radius: 50%;
            margin: 0 auto 1.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--primary-blue);
        }

        .feature-title {
            font-size: 1.3rem;
            margin-bottom: 1rem;
            color: var(--text-dark);
            font-weight: 600;
        }

        .feature-description {
            color: var(--text-light);
            line-height: 1.6;
        }

        /* 页脚 */
        .footer {
            background-color: var(--text-dark);
            color: var(--white);
            padding: 5rem 0 2rem;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 3rem;
            margin-bottom: 3rem;
        }

        .footer-logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 1.5rem;
            display: inline-block;
            text-decoration: none;
        }

        .footer-about p {
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 1.5rem;
            line-height: 1.6;
        }

        .social-links {
            display: flex;
            gap: 1rem;
        }

        .social-link {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            transition: all 0.3s;
        }

        .social-link:hover {
            background-color: var(--primary-blue);
            transform: translateY(-3px);
        }

        .footer-heading {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            color: var(--white);
        }

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

        .footer-links li {
            margin-bottom: 0.8rem;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: all 0.3s;
        }

        .footer-links a:hover {
            color: var(--white);
            padding-left: 5px;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
        }

        /* 响应式设计 */
        @media (max-width: 992px) {
            .hero h1 {
                font-size: 3rem;
            }
            
            .about-content {
                grid-template-columns: 1fr;
            }
            
            .about-image {
                height: 400px;
                margin-top: 2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
            }
            
            .hero {
                text-align: center;
            }
            
            .hero-content {
                max-width: 100%;
            }
            
            .hero-buttons {
                justify-content: center;
            }
            
            .hero-image {
                display: none;
            }
            
            .section-title {
                font-size: 2rem;
            }
        }

        @media (max-width: 576px) {
            .hero h1 {
                font-size: 2.5rem;
            }
            
            .hero p {
                font-size: 1.1rem;
            }
            
            .hero-buttons {
                flex-direction: column;
                gap: 1rem;
            }
            
            .btn {
                width: 100%;
                text-align: center;
            }
        }
       a {
            text-decoration: none;     /* 去掉下划线 */
            outline: none;             /* 去掉点击时的虚线框（可选） */
            background: none;          /* 去掉可能的背景色 */
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
       }