@charset "utf-8";
/* CSS Document */

*{
	border:0px;
	margin:0px;
	padding:0px;
	}
body {
	background-color: #FFF;
	font-family:Arial, Helvetica, sans-serif;
	font-size:11px;
	color:#2b3f78;
	}


/* ========== 统一标题样式 ========== */
        .section-title {
            text-align: center;
            margin-bottom: 35px;
        }

        .title-main {
            font-size: 38px;
            font-weight: 700;
            color: #5a1a0a;
            position: relative;
            display: inline-block;
            padding: 0 20px;
        }

        .title-main::before,
        .title-main::after {
            content: "";
            width: 50px;
            height: 3px;
            background-color: #c0392b;
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
        }

        .title-main::before { left: -60px; }
        .title-main::after { right: -60px; }

        /* ========== 模块容器：无背景 + 舒适间距 ========== */
        .section-container {
            max-width: 1200px;
            margin: 0 auto 45px auto; /* 模块之间舒适距离 */
            padding: 0;
            background: transparent !important;
            border: none;
        }

        /* ========== 6大厂家优势 ========== */
        .advantage-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 35px 25px;
        }

        .advantage-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }

        .item-icon img {
            width: 68px;
            height: 68px;
            object-fit: contain;
            margin-bottom: 12px;
        }

        .item-text {
            font-size: 20px;
            color: #333;
            font-weight: 500;
        }

        /* ========== 资质齐全 ========== */
        .qualification-subtitle {
            text-align: center;
            font-size: 24px;
            margin-bottom: 30px;
            color: #333;
        }

        .certificate-container {
            position: relative;
            width: 100%;
            max-width: 900px;
            margin: 0 auto;
            min-height: 540px;
        }

        .certificate-item {
            position: absolute;
            width: 28%;
            box-shadow: 0 3px 8px rgba(0,0,0,0.1);
        }

        .certificate-item img {
            width: 100%;
            height: auto;
            display: block;
        }

        .cert-1 { top: 0; left: 0; }
        .cert-2 { top: 0; left: 36%; }
        .cert-3 { top: 0; right: 0; }
        .cert-4 { bottom: 0; left: 36%; }
        .cert-5 { bottom: 0; left: 0; }
        .cert-6 { bottom: 0; right: 0; }

        /* ========== 安装实例 ========== */
/* 核心网格：永远保持 2列布局 */
        .project-container {
            display: grid;
            grid-template-columns: 1fr 1fr; /* 永远两列 */
            grid-template-rows: auto auto;
            gap: 20px;
            max-width: 1200px;
            margin: 0 auto;
        }

        /* 项目卡片 */
        .project-card {
            position: relative;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            background-color: #fff;
        }

        /* 第三张卡片：跨满整行 */
        .project-card.full-width {
            grid-column: 1 / -1;
        }

        /* 图片自适应 */
        .project-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        /* 文字样式 */
        .project-tatal {
            position: absolute;
            bottom: 30px;
            left: 30px;
            color: #ffffff;
            font-size: 28px;
            font-weight: bold;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
            line-height: 1.4;
        }

        /* 手机端：保留原布局，只缩小文字和间距 */
        @media (max-width: 768px) {
            .project-container {
                gap: 10px; /* 手机端缩小间距 */
            }
            .project-tatal {
                font-size: 16px; /* 手机端缩小文字 */
                bottom: 15px;
                left: 15px;
            }
        }
        /* ========== 产品优势（列表） ========== */
         
        /* 优点列表 */
        .advantage-list {
            list-style: none;
            padding: 0;
        }

        /* 单个优点卡片 */
        .advantage-item {
            background: #f8f9fa;
            border-left: 5px solid #3498db;
            border-radius: 6px;
            padding: 18px 22px;
            margin-bottom: 16px;
            box-shadow: 0 2px 6px rgba(0,0,0,0.05);
            transition: all 0.2s;
        }

        /* 鼠标悬浮效果 */
        .advantage-item:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 10px rgba(0,0,0,0.1);
        }

        /* 序号样式 */
        .advantage-item .num {
            display: inline-block;
            width: 28px;
            height: 28px;
            line-height: 28px;
            background: #3498db;
            color: #fff;
            text-align: center;
            border-radius: 50%;
            margin-right: 12px;
            font-weight: bold;
        }

        /* 文字内容 */
        .advantage-item .text {
            color: #333;
            font-size: 16px;
            line-height: 1.6;
        }

        /* ========== 适用场景（列表） ========== */
       /* 场景容器 - 响应式网格布局 */
        .scene-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        /* 单个场景卡片 */
        .scene-card {
            background-color: #ffffff;
            border-radius: 12px;
            padding: 28px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
            border-top: 4px solid #2563eb;
        }

        /* 卡片悬浮效果 */
        .scene-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
            border-top-color: #1d4ed8;
        }

        /* 场景序号 */
        .scene-num {
            display: inline-block;
            width: 36px;
            height: 36px;
            line-height: 36px;
            background-color: #2563eb;
            color: #ffffff;
            text-align: center;
            border-radius: 50%;
            font-size: 18px;
            font-weight: bold;
            margin-bottom: 16px;
        }

        /* 场景标题 */
        .scene-card h3 {
            color: #2d3748;
            font-size: 20px;
            margin-bottom: 12px;
            font-weight: 600;
        }

        /* 场景描述 */
        .scene-desc {
            color: #4a5568;
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* 响应式调整（手机端） */
        @media (max-width: 768px) {
            .scene-title {
                font-size: 24px;
            }

            .scene-card {
                padding: 20px;
            }

            .scene-card h3 {
                font-size: 18px;
            }

            .scene-desc {
                font-size: 14px;
            }
        }