* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        :root {
            --primary: #2c3e50;
            --secondary: #3498db;
            --accent: #e74c3c;
            --light: #ecf0f1;
            --dark: #2c3e50;
            --text: #333;
            --text-light: #7f8c8d;
            --success: #2ecc71;
            --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        html {
            scroll-behavior: smooth;
        }
        
        body {
            color: var(--text);
            line-height: 1.6;
            overflow-x: hidden;
        }
        
        /* 导航栏 */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.95);
            box-shadow: var(--shadow);
            z-index: 1000;
            padding:0px 0;
            transition: all 0.3s ease;
        }
        
        .navbar.scrolled {
            padding: 0px 0;
            background: rgba(255, 255, 255, 0.98);
        }
        
        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 20px;
        }
        
        .logo {
            font-size: 1.8rem;
            font-weight: bold;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .nav-links {
            display: flex;
            list-style: none;
            gap: 60px;
        }
        
        .nav-links a {
            text-decoration: none;
            color: var(--text);
            font-weight: 500;
            transition: color 0.3s;
            position: relative;
        }
        
        .nav-links a:hover {
            color: var(--secondary);
        }
        
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--secondary);
            transition: width 0.3s;
        }
        
        .nav-links a:hover::after {
            width: 100%;
        }
        
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary);
            cursor: pointer;
        }
        
        /* 英雄区域 */
        .hero {
            height: 100vh;
            background: linear-gradient(rgba(44, 62, 80, 0.2), rgba(44, 62, 80, 0.1)), url('../images/banner.jpg');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            color: white;
            padding: 0 20px;
        }
        
        .hero-content {
            max-width: 800px;
        }
        
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        
        .hero p {
            font-size: 1.3rem;
            margin-bottom: 30px;
            opacity: 0.9;
        }
        
        .btn {
            display: inline-block;
            padding: 12px 30px;
            background: var(--secondary);
            color: white;
            border: none;
            border-radius: 5px;
            font-size: 1.1rem;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s;
            text-decoration: none;
        }
        
        .btn:hover {
            background: #2980b9;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
        }
        
        .btn-outline {
            background: transparent;
            border: 2px solid white;
            margin-left: 15px;
        }
        
        .btn-outline:hover {
            background: white;
            color: var(--primary);
        }
        
        /* 关于我们 */
        .section {
            padding: 3% 20px;
        }
        
        .section-title {
            text-align: center;
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 15px;
        }
        
        .section-subtitle {
            text-align: center;
            color: var(--text-light);
            max-width: 700px;
            margin: 0 auto 50px;
            font-size: 1.1rem;
        }
        
        .about-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            gap: 50px;
        }
        
        .about-image {
            flex: 1;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        
        .about-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform 0.5s;
        }
        
        .about-image:hover img {
            transform: scale(1.05);
        }
        
        .about-content {
            flex: 1;
        }
        
        .about-content h3 {
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 20px;
        }
        
        .about-content p {
            margin-bottom: 20px;
            color: var(--text-light);
        }
        
        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }
        
        .feature {
            display: flex;
            gap: 15px;
        }
        
        .feature-icon {
            width: 60px;
            height: 60px;
            background: var(--light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--secondary);
            font-size: 1.5rem;
            flex-shrink: 0;
        }
        
        .feature-content h4 {
            font-size: 1.2rem;
            margin-bottom: 10px;
            color: var(--primary);
        }
        
        /* 服务 */
        .services {
            background: var(--light);
        }
        
        .services-grid {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .service-card {
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: transform 0.3s;
        }
        
        .service-card:hover {
            transform: translateY(-10px);
        }
        
        .service-icon {
            height: auto;
            background: var(--secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 3rem;
        }
              .service-icon  img{max-width:100%;}  
        .service-content {
            padding: 30px;
        }
        
        .service-content h3 {
            font-size: 1.0rem;
            margin-bottom: 15px;
            color: var(--primary);
        }
        
        .service-content p {
            color: var(--text-light);
            margin-bottom: 20px;
        }
        
        .service-link {
            color: var(--secondary);
            text-decoration: none;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 5px;
        }
        
        .service-link:hover {
            gap: 10px;
        }
        
        /* 作品集 */
        .portfolio-grid {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 30px;
        }
        
        .portfolio-item {
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
            position: relative;
            height: 300px;
        }
        
        .portfolio-image {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        
        .portfolio-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(52, 152, 219, 0.9);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            color: white;
            opacity: 0;
            transition: opacity 0.3s;
            padding: 20px;
            text-align: center;
        }
        
        .portfolio-item:hover .portfolio-overlay {
            opacity: 1;
        }
        
        .portfolio-item:hover .portfolio-image {
            transform: scale(1.1);
        }
        
        .portfolio-overlay h3 {
            font-size: 1.5rem;
            margin-bottom: 10px;
        }
        
        /* 团队 */
        .team {
            background: var(--light);
        }
        
        .team-grid {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 30px;
        }
        
        .team-member {
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
            text-align: center;
            transition: transform 0.3s;
        }
        
        .team-member:hover {
            transform: translateY(-10px);
        }
        
        .member-image {
            height: 250px;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 4rem;
        }
        
        .member-content {
            padding: 20px;
        }
        
        .member-content h3 {
            font-size: 1.3rem;
            margin-bottom: 5px;
            color: var(--primary);
        }
        
        .member-content p {
            color: var(--text-light);
            margin-bottom: 15px;
        }
        
        .social-links {
            display: flex;
            justify-content: center;
            gap: 15px;
        }
        
        .social-links a {
            color: var(--text-light);
            transition: color 0.3s;
        }
        
        .social-links a:hover {
            color: var(--secondary);
        }
        
        /* 联系 */
        .contact-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            gap: 50px;
        }
        
        .contact-info {
            flex: 1;
        }
        
        .contact-form {
            flex: 1;
        }
        
        .info-item {
            display: flex;
            gap: 15px;
            margin-bottom: 30px;
        }
        
        .info-icon {
            width: 50px;
            height: 50px;
            background:#fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--secondary);
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        
        .info-content h3 {
            font-size: 1.2rem;
            margin-bottom: 5px;
            color: var(--primary);
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        
        .form-control:focus {
            outline: none;
            border-color: var(--secondary);
        }
        
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        
        /* 页脚 */
        footer {
            background: var(--primary);
            color: white;
            padding: 70px 20px 30px;
        }
        
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 100px;
            margin-bottom: 50px;
        }
        
        .footer-column h3 {
            font-size: 1.3rem;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-column h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 2px;
            background: var(--secondary);
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 10px;
        }
        
        .footer-links a {
            color: #bdc3c7;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        
        .footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
            color: #bdc3c7;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .about-container {
                flex-direction: column;
            }
            
            .contact-container {
                flex-direction: column;
            }
            
            .hero h1 {
                font-size: 2.8rem;
            }
        }
        
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .hero h1 {
                font-size: 2.2rem;
            }
            
            .hero p {
                font-size: 1.1rem;
            }
            
            .section-title {
                font-size: 2rem;
            }
        }