/* 全局样式 */
        body {
            margin: 0;
            padding: 0;
            font-family: 'Helvetica Neue', Arial, sans-serif;
            background-color: #f0f4f8;
            color: #333;
            line-height: 1.6;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
        }

        /* 页头 */
        header {
            background: linear-gradient(135deg, #1e90ff, #00bfff);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        header h1 {
            font-size: clamp(24px, 6vw, 48px);
            /* 动态调整字体大小 */
            font-weight: bold;
            margin: 0;
            color: #fff;
            white-space: nowrap;
            /* 确保文字不换行 */
            animation: glow 2s infinite alternate;
        }

        @keyframes glow {
            0% {
                text-shadow: 0 0 5px rgba(30, 144, 255, 0.8), 0 0 10px rgba(30, 144, 255, 0.8);
            }

            100% {
                text-shadow: 0 0 10px rgba(30, 144, 255, 0.8), 0 0 20px rgba(30, 144, 255, 0.8);
            }
        }

        header p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.9);
            margin-top: 10px;
        }

        header::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, #1e90ff, #00bfff);
        }

        /* 功能特色部分 */
        .features {
            background-color: #fff;
            padding: 50px 0;
            text-align: center;
        }

        .features h2 {
            font-size: 36px;
            color: #1e90ff;
            margin-bottom: 30px;
            font-weight: bold;
        }

        .features ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 20px;
        }

        .features li {
            flex: 1 1 30%;
            background-color: #f0f4f8;
            padding: 20px;
            border-radius: 12px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .features li:hover {
            transform: translateY(-10px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }

        .features li h3 {
            font-size: 20px;
            color: #1e90ff;
            margin-bottom: 10px;
            font-weight: bold;
        }

        .features li p {
            font-size: 16px;
            color: #666;
            line-height: 1.6;
        }

        /* 主体内容 */
        .main-content {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            margin-top: 50px;
        }

        .section {
            flex: 1 1 30%;
            background-color: #fff;
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .section:hover {
            transform: translateY(-10px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
        }

        .section h2 {
            font-size: 24px;
            color: #1e90ff;
            margin-bottom: 20px;
            font-weight: bold;
        }

        .section p {
            font-size: 16px;
            color: #666;
            line-height: 1.6;
        }

        .section a {
            display: inline-block;
            background: linear-gradient(90deg, #1e90ff, #00bfff);
            color: #fff;
            padding: 10px 20px;
            border-radius: 6px;
            margin-top: 20px;
            transition: transform 0.3s ease;
        }

        .section a:hover {
            transform: translateY(-3px);
        }

        /* 页脚 */
        footer {
            background-color: #1e90ff;
            padding: 30px 0;
            text-align: center;
            color: #fff;
            font-size: 14px;
            margin-top: 80px;
        }

        /* 模态框样式 */
        .modal {
            display: none;
            position: fixed;
            z-index: 1000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            overflow: auto;
            background-color: rgba(0, 0, 0, 0.8);
        }

        .modal-content {
            background-color: #fff;
            margin: 5% auto;
            padding: 40px;
            border-radius: 12px;
            max-width: 800px;
            position: relative;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
            max-height: 80vh;
            overflow-y: auto;
        }

        .modal h2 {
            font-size: 28px;
            color: #1e90ff;
            margin-bottom: 20px;
            font-weight: bold;
        }

        .modal p {
            font-size: 16px;
            color: #666;
            line-height: 1.6;
            margin-bottom: 20px;
        }

        .modal ul {
            margin: 20px 0;
            padding-left: 20px;
        }

        .modal li {
            margin-bottom: 10px;
        }

        .close {
            color: #1e90ff;
            font-size: 28px;
            position: absolute;
            top: 20px;
            right: 20px;
            cursor: pointer;
        }

        .close:hover {
            color: #00bfff;
        }