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

        body {
            font-family: "Microsoft YaHei", sans-serif;
            line-height: 1.6;
        }

        .header {
            background-color: #fff;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
            padding: 20px 0;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
        }

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

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

        .logo {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .logo-symbol {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 45px;
            height: 45px;
            background: linear-gradient(135deg, #1890ff, #096dd9);
            border-radius: 12px;
            position: relative;
            overflow: hidden;
            box-shadow: 0 4px 12px rgba(24, 144, 255, 0.3);
        }

        .logo-symbol:before {
            content: "XM";
            color: white;
            font-size: 20px;
            font-weight: bold;
            letter-spacing: -1px;
            text-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }

        .logo-symbol:after {
            content: '';
            position: absolute;
            width: 100%;
            height: 100%;
            background: linear-gradient(45deg, transparent 45%, rgba(255,255,255,0.1) 50%, transparent 55%);
            animation: shine 3s infinite;
        }

        .logo span {
            font-size: 22px;
            font-weight: 600;
            color: #333;
            letter-spacing: 1px;
        }

        @keyframes shine {
            0% {
                transform: translateX(-100%) translateY(-100%);
            }
            50% {
                transform: translateX(100%) translateY(100%);
            }
            100% {
                transform: translateX(100%) translateY(100%);
            }
        }

        .nav-links {
            list-style: none;
            display: flex;
        }

        .nav-links li {
            margin-left: 30px;
        }

        .nav-links a {
            text-decoration: none;
            color: #333;
            position: relative;
            padding-bottom: 5px;
        }

        .nav-links a:after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            background: #1890ff;
            left: 0;
            bottom: 0;
            transition: width 0.3s ease;
        }

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

        .section {
            padding: 80px 0;
            margin-top: -80px;  /* 添加负边距抵消固定导航栏的高度 */
            padding-top: 160px; /* 原来的 padding-top 加上导航栏高度 */
        }

        .hero {
            background: linear-gradient(135deg, 
                rgba(0,21,41,0.95) 0%, 
                rgba(0,21,41,0.8) 50%,
                rgba(24,144,255,0.6) 100%), 
                url('images/hero-bg.jpg');
            background-size: cover;
            background-position: center;
            height: 80vh;
            display: flex;
            align-items: center;
            text-align: center;
            color: white;
            position: relative;
            overflow: hidden;
        }

        .hero:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('images/pattern.png');
            opacity: 0.1;
            animation: slide 20s linear infinite;
        }

        @keyframes slide {
            from {
                transform: translateX(0) translateY(0);
            }
            to {
                transform: translateX(-100%) translateY(-100%);
            }
        }

        .hero-content {
            width: 100%;
            padding: 20px;
        }

        .hero h1 {
            font-size: 48px;
            margin-bottom: 15px;
            animation: fadeInDown 1s ease;
            letter-spacing: 2px;
        }

        .hero .subtitle {
            font-size: 24px;
            margin-bottom: 40px;
            animation: fadeInUp 1s ease;
            color: rgba(255,255,255,0.9);
        }

        .hero-features {
            display: flex;
            justify-content: center;
            gap: 60px;
            margin: 40px 0;
            animation: fadeIn 1.5s ease;
        }

        .feature {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .feature-number {
            font-size: 36px;
            font-weight: bold;
            color: #1890ff;
            margin-bottom: 5px;
        }

        .feature-text {
            font-size: 16px;
            color: rgba(255,255,255,0.8);
        }

        .cta-button {
            display: inline-block;
            padding: 15px 40px;
            background: #1890ff;
            color: white;
            text-decoration: none;
            border-radius: 30px;
            font-size: 18px;
            transition: all 0.3s ease;
            animation: fadeInUp 1.5s ease;
            margin-top: 20px;
        }

        .cta-button:hover {
            background: #40a9ff;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(24,144,255,0.3);
        }

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

        .about-section {
            display: flex;
            align-items: center;
            gap: 50px;
            margin: 40px 0;
        }

        .about-image {
            flex: 1;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }

        .about-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .about-image:hover img {
            transform: scale(1.05);
        }

        .about-content {
            flex: 1;
            padding: 30px;
        }

        .about-content p {
            margin-bottom: 20px;
            line-height: 1.8;
        }

        .section-title {
            text-align: center;
            margin-bottom: 50px;
            position: relative;
            padding-bottom: 20px;
        }

        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background: #1890ff;
        }

        .service-item {
            text-align: center;
            padding: 40px 30px;
            background: #fff;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

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

        .service-icon {
            width: 80px;
            height: 80px;
            margin: 0 auto 20px;
            padding: 20px;
            background: #f0f9ff;
            border-radius: 50%;
        }

        .service-icon img {
            width: 100%;
            height: 100%;
            object-fit: contain;
        }

        .service-item h3 {
            margin-bottom: 15px;
            color: #1890ff;
        }

        @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);
            }
        }

        .footer {
            background: #001529;
            color: white;
            padding: 60px 0;
        }

        .contact-info h2 {
            margin-bottom: 30px;
            color: #1890ff;
        }

        .contact-info p {
            margin-bottom: 15px;
            color: #ffffff99;
        }