/* 基础样式重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Arial', sans-serif;
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.7;
        }
        /* 页面容器 */
        .drone-fram-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 50px 20px;
        }
        /* 标题区域 */
        .page-header {
            text-align: center;
            margin-bottom: 60px;
        }
        .main-title {
            font-size: 36px;
            font-weight: 700;
            color: #0f4c81;
            margin-bottom: 15px;
        }
        .sub-title {
            font-size: 18px;
            color: #666;
            max-width: 800px;
            margin: 0 auto;
        }
        /* 核心描述区域 */
        .core-desc {
            background-color: #fff;
            padding: 30px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            margin-bottom: 50px;
            font-size: 16px;
            line-height: 1.8;
        }
        /* 应用场景列表 - 固定2行2列 */
        .application-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 25px;
            margin-bottom: 50px;
            grid-template-rows: auto auto;
        }
        /* 响应式适配：小屏幕下改为1列 */
        @media (max-width: 768px) {
            .application-list {
                grid-template-columns: 1fr;
            }
        }
        .application-card {
            background-color: #fff;
            padding: 25px;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
            transition: transform 0.3s ease;
            height: 100%; /* 保证同列卡片高度一致 */
        }
        .application-card:hover {
            transform: translateY(-5px);
        }
        .card-title {
            font-size: 18px;
            font-weight: 600;
            color: #0f4c81;
            margin-bottom: 12px;
            border-left: 4px solid #0f4c81;
            padding-left: 10px;
        }
        .card-desc {
            font-size: 14px;
            color: #555;
            line-height: 1.7;
        }
        /* 产品优势区域 */
        .advantages-section {
            background-color: #0f4c81;
            color: #fff;
            padding: 40px;
            border-radius: 8px;
        }
        .advantages-title {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 20px;
            text-align: center;
        }
        .advantages-list {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-around;
            gap: 20px;
        }
        .advantage-item {
            flex: 1;
            min-width: 200px;
            text-align: center;
        }
        .advantage-icon {
            font-size: 32px;
            margin-bottom: 10px;
        }
        .advantage-text {
            font-size: 15px;
        }