/* 基础样式重置与全局设置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background-color: #f5f7fa;
            color: #333;
            line-height: 1.6;
        }

        /* 导航栏样式 */
        .navbar {
            background-color: #0a192f;
            color: white;
            padding: 1rem 5%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: bold;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, #64ffda, #007bff);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .logo-icon i {
            font-size: 1.5rem;
            color: white;
        }

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

        .nav-menu a {
            color: white;
            text-decoration: none;
            transition: color 0.3s;
            font-weight: 500;
            position: relative;
            padding: 0.5rem 0;
        }

        .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: #64ffda;
            transition: width 0.3s;
        }

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

        .nav-menu a:hover {
            color: #64ffda;
        }

        .language-switcher {
            display: flex;
            gap: 0.5rem;
        }

        .language-switcher button {
            background: transparent;
            border: none;
            color: white;
            cursor: pointer;
            opacity: 0.7;
            transition: opacity 0.3s;
            font-size: 0.9rem;
        }

        .language-switcher button.active {
            opacity: 1;
            font-weight: bold;
            text-decoration: underline;
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }

        /* 首屏Banner样式 */
        .banner {
            background: linear-gradient(135deg, #87CEEB, #00008B);
            color: white;
            padding: 8rem 2rem 5rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: radial-gradient(circle at 10% 20%, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 70%);
        }

        .banner-content {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .main-title {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            animation: fadeInDown 1s ease;
        }

        .sub-title {
            font-size: 1.2rem;
            opacity: 0.9;
            margin-bottom: 2rem;
            animation: fadeInUp 1s ease 0.3s both;
        }

        .cta-button {
            display: inline-block;
            background-color: #64ffda;
            color: #0a192f;
            padding: 0.8rem 2rem;
            border-radius: 30px;
            text-decoration: none;
            font-weight: bold;
            transition: all 0.3s;
            animation: fadeIn 1s ease 0.6s both;
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
        }

        .cta-button:hover {
            background-color: #52e0c4;
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(0,0,0,0.25);
        }

        /* 核心数据标签样式 */
        .core-data {
            display: flex;
            justify-content: center;
            gap: 2rem;
            padding: 3rem 2rem;
            background-color: white;
            flex-wrap: wrap;
        }

        .data-item {
            padding: 1.5rem 2rem;
            background-color: #f0f7ff;
            border-radius: 8px;
            font-weight: bold;
            color: #0056b3;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
            text-align: center;
            min-width: 200px;
            transition: transform 0.3s;
        }

        .data-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }

        .data-value {
            font-size: 2rem;
            margin-bottom: 0.5rem;
            color: #0a192f;
        }

        .data-label {
            font-size: 0.9rem;
            opacity: 0.8;
        }

        /* 服务卡片区域样式 */
        .services {
            padding: 4rem 5%;
            max-width: 1200px;
            margin: 0 auto;
        }

        .section-header {
            text-align: center;
            margin-bottom: 3rem;
        }

        .section-title {
            font-size: 2rem;
            color: #0a192f;
            margin-bottom: 1rem;
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background: linear-gradient(to right, #64ffda, #007bff);
            border-radius: 3px;
        }

        .section-subtitle {
            color: #666;
            max-width: 700px;
            margin: 0 auto;
        }

        .service-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }

        .card {
            background-color: white;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: transform 0.3s, box-shadow 0.3s;
            position: relative;
            overflow: hidden;
        }

        .card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 5px;
            height: 100%;
            background: linear-gradient(to bottom, #64ffda, #007bff);
        }

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

        .card-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, #64ffda, #007bff);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
        }

        .card-icon i {
            font-size: 1.8rem;
            color: white;
        }

        .card h3 {
            color: #0a192f;
            margin-bottom: 1rem;
            font-size: 1.5rem;
        }

        .card p {
            color: #666;
            margin-bottom: 1.5rem;
            line-height: 1.7;
        }

        .card-link {
            color: #007bff;
            text-decoration: none;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            transition: all 0.3s;
        }

        .card-link:hover {
            color: #0056b3;
            gap: 0.7rem;
        }

        /* 页脚样式 */
        .footer {
            background-color: #0a192f;
            color: white;
            padding: 3rem 5%;
            margin-top: 3rem;
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
        }

        .footer-section {
            padding: 1rem;
        }

        .footer-section h4 {
            margin-bottom: 1.5rem;
            color: #64ffda;
            font-size: 1.2rem;
            position: relative;
            padding-bottom: 0.5rem;
        }

        .footer-section h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 2px;
            background-color: #64ffda;
        }

        .footer-section ul {
            list-style: none;
        }

        .footer-section li {
            margin-bottom: 0.8rem;
            line-height: 1.8;
        }

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

        .footer-section a:hover {
            color: white;
            transform: translateX(5px);
        }

        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
        }

        .contact-icon {
            color: #64ffda;
            font-size: 1.2rem;
        }

        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            margin-top: 1.5rem;
            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: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: #0a192f;
                flex-direction: column;
                padding: 1rem 0;
                box-shadow: 0 5px 10px rgba(0,0,0,0.1);
            }

            .nav-menu.show {
                display: flex;
            }

            .nav-menu li {
                padding: 0.8rem 5%;
            }

            .hamburger {
                display: block;
            }

            .main-title {
                font-size: 2rem;
            }

            .sub-title {
                font-size: 1rem;
            }

            .core-data {
                flex-direction: column;
                align-items: center;
            }

            .data-item {
                width: 100%;
                max-width: 300px;
            }

            .service-cards {
                grid-template-columns: 1fr;
            }

            .footer-content {
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }

        @media (max-width: 480px) {
            .footer-section h4 {
                font-size: 1.1rem;
            }
            .footer-section li {
                font-size: 0.95rem;
            }
            .copyright {
                font-size: 0.85rem;
                padding: 1.5rem 3%;
            }
        }

            .footer-section {
            padding: 1.5rem 5%;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .footer-section:last-child {
            border-bottom: none;
        }
        }

        /* 动画 */
        @keyframes fadeInDown {
            from {
                opacity: 0;
                transform: translateY(-20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
            }
            to {
                opacity: 1;
            }
        }