/* 模块导航 */
        .modules-nav {
            background: white;
            padding: 20px 0;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            position: sticky;
            top: 70px;
            z-index: 100;
        }

        .modules-nav-list {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 15px;
            list-style: none;
        }

        .modules-nav-list a {
            color: #555;
            text-decoration: none;
            font-weight: 500;
            padding: 8px 20px;
            border-radius: 30px;
            transition: all 0.3s;
            font-size: 15px;
            border: 1px solid #eee;
        }

        .modules-nav-list a:hover {
            background: #f0f7ff;
            color: #0e74f6;
        }

        .modules-nav-list a.active {
            background: #0e74f6;
            color: white;
            border-color: #0e74f6;
        }

        /* 功能模块介绍 */
        .function-modules {
            padding: 100px 0;
        }

        .section-title {
            text-align: center;
            margin-bottom: 70px;
        }

        .section-title h2 {
            font-size: 36px;
            color: #0a2e5c;
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, #4dabf7, #0a2e5c);
            border-radius: 2px;
        }

        .section-title p {
            color: #666;
            font-size: 18px;
            max-width: 800px;
            margin: 30px auto 0;
            line-height: 1.6;
        }

        .modules-container {
            display: flex;
            flex-direction: column;
            gap: 80px;
        }

        .module-item {
            display: flex;
            align-items: center;
            gap: 60px;
            padding: 40px;
            border-radius: 15px;
            background: white;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            transition: transform 0.4s, box-shadow 0.4s;
            overflow: hidden;
            position: relative;
        }

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

        .module-item:nth-child(even) {
            flex-direction: row-reverse;
        }

        .module-content {
            flex: 1;
        }

        .module-header {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-bottom: 25px;
        }

        .module-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, #e7f5ff 0%, #d0ebff 100%);
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #339af0;
            font-size: 28px;
            transition: all 0.3s;
        }

        .module-item:hover .module-icon {
            transform: scale(1.1);
            background: linear-gradient(135deg, #4dabf7 0%, #339af0 100%);
            color: white;
        }

        .module-title {
            font-size: 28px;
            color: #0a2e5c;
            margin-bottom: 8px;
            line-height: 1.3;
        }

        .module-subtitle {
            color: #4dabf7;
            font-size: 16px;
            font-weight: 500;
        }

        .module-description {
            color: #555;
            line-height: 1.8;
            margin-bottom: 25px;
            font-size: 16px;
        }

        .module-features {
            list-style: none;
            margin-bottom: 30px;
        }

        .module-features li {
            margin-bottom: 15px;
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }

        .feature-icon {
            color: #4dabf7;
            font-size: 16px;
            margin-top: 3px;
            flex-shrink: 0;
        }

        .module-features span {
            color: #555;
            line-height: 1.6;
            font-size: 15px;
        }

        .module-features strong {
            color: #0a2e5c;
            font-weight: 600;
        }

        .module-process {
            background: #f8fafc;
            padding: 20px;
            border-radius: 10px;
            border-left: 4px solid #4dabf7;
        }

        .process-title {
            font-weight: 600;
            color: #0a2e5c;
            margin-bottom: 10px;
            font-size: 16px;
        }

        .process-steps {
            color: #555;
            font-size: 15px;
            line-height: 1.6;
        }

        .module-image {
            flex: 1;
            height: 550px;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            background-size: cover;
            background-position: center;
            transition: transform 0.5s;
        }

        .module-item:hover .module-image {
            transform: scale(1.03);
        }

        .module-1 {
            background-image: url('/images/hyzq.jpg');
        }

        .module-2 {
            background-image: url('/images/xttu.jpg');
        }

        .module-3 {
            background-image: url('/images/hytu.jpg');
        }

        .module-4 {
            background-image: url('https://images.unsplash.com/photo-1573164713714-d95e436ab286?ixlib=rb-4.0.3&auto=format&fit=crop&w=800');
        }

        .module-5 {
            background-image: url('https://images.unsplash.com/photo-1553877522-43269d4ea984?ixlib=rb-4.0.3&auto=format&fit=crop&w=800');
        }

        .module-6 {
            background-image: url('https://images.unsplash.com/photo-1524178234883-043d5c3f3cf4?ixlib=rb-4.0.3&auto=format&fit=crop&w=800');
        }

        .module-7 {
            background-image: url('https://images.unsplash.com/photo-1606326608606-aa0b629e0caf?ixlib=rb-4.0.3&auto=format&fit=crop&w=800');
        }

        .module-8 {
            background-image: url('https://images.unsplash.com/photo-1554224155-8d04cb21cd6c?ixlib=rb-4.0.3&auto=format&fit=crop&w=800');
        }

        /* 平台架构部分 */
        .platform-architecture {
            padding: 100px 0;
            background: linear-gradient(135deg, #f8fafc 0%, #f1f8ff 100%);
        }

        .architecture-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
        }

        .architecture-item {
            text-align: center;
            padding: 40px 30px;
            border-radius: 12px;
            background: white;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s;
        }

        .architecture-item:hover {
            transform: translateY(-10px);
        }

        .architecture-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, #e7f5ff 0%, #d0ebff 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            color: #339af0;
            font-size: 32px;
            transition: all 0.3s;
        }

        .architecture-item:hover .architecture-icon {
            transform: scale(1.1);
            background: linear-gradient(135deg, #4dabf7 0%, #339af0 100%);
            color: white;
        }

        .architecture-title {
            font-size: 22px;
            color: #0a2e5c;
            margin-bottom: 15px;
        }

        .architecture-desc {
            color: #666;
            line-height: 1.6;
            font-size: 15px;
        }
         /* 响应式设计 */
        @media (max-width: 992px) {
            .module-item {
                flex-direction: column !important;
                gap: 40px;
            }
            
            .module-image {
                width: 100%;
                height: 300px;
            }
            
            .architecture-container {
                grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
            }
            
            .mobile-menu-btn {
                display: flex;
            }
            
            .page-header h1 {
                font-size: 32px;
            }
            
            .page-header p {
                font-size: 16px;
            }
            
            .module-item {
                padding: 30px 20px;
            }
            
            .module-title {
                font-size: 24px;
            }
            
            .section-title h2 {
                font-size: 30px;
            }
            
            .footer-column {
                width: 100%;
            }
        }