.xn_pg_wrap,
        .xn_pg_wrap *,
        .xn_pg_wrap *::before,
        .xn_pg_wrap *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        .xn_pg_wrap {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Source Han Sans CN", system-ui, -apple-system, sans-serif;
            font-size: 15px;
            line-height: 1.72;
            color: #2c2c2c;
            background-color: #f9fafb;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            letter-spacing: 0.02em;
        }

        /* --- 内宽容器 --- */
        .xn_inner {
            max-width: 1120px;
            margin: 0 auto;
            padding-left: 28px;
            padding-right: 28px;
            margin-top: 80px;
        }

        @media (max-width: 768px) {
            .xn_inner {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* --- 面包屑 --- */
        .xn_crumb_bar {
            padding-top: 18px;
            padding-bottom: 10px;
            font-size: 13px;
            color: #6b7280;
            letter-spacing: 0.03em;
            border-bottom: 1px solid #e9ecf0;
            margin-bottom: 0;
        }
        .xn_crumb_bar .xn_inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 2px;
            list-style: none;
        }
        .xn_crumb_bar a {
            color: #4b5563;
            text-decoration: none;
            transition: color 0.18s;
        }
        .xn_crumb_bar a:hover {
            color: #1a56db;
            text-decoration: underline;
        }
        .xn_crumb_sep {
            margin: 0 5px;
            color: #b0b7c3;
            user-select: none;
            font-size: 11px;
        }
        .xn_crumb_cur {
            color: #1f2937;
            font-weight: 600;
            pointer-events: none;
        }

        /* --- 主视觉区 Hero Block --- */
        .xn_hero_block {
            background: #ffffff;
            border-radius: 10px;
            margin-top: 22px;
            margin-bottom: 26px;
            box-shadow: 0 1px 6px rgba(0, 0, 0, 0.04), 0 4px 16px rgba(0, 0, 0, 0.03);
            overflow: hidden;
            border: 1px solid #e5e8ec;
        }
        .xn_hero_grid {
            display: flex;
            flex-wrap: wrap;
            align-items: stretch;
            gap: 0;
        }
        .xn_hero_text {
            flex: 1 1 480px;
            padding: 34px 32px 30px 34px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .xn_hero_text h1 {
            font-size: 26px;
            font-weight: 700;
            color: #111827;
            line-height: 1.36;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
            border-left: 4px solid #1a56db;
            padding-left: 14px;
        }
        .xn_hero_text h1 .xn_h1_sub {
            display: block;
            font-size: 14px;
            font-weight: 400;
            color: #5c6b7e;
            margin-top: 4px;
            letter-spacing: 0.04em;
            border-left: none;
            padding-left: 0;
        }
        .xn_hero_desc {
            font-size: 15px;
            color: #4a5568;
            line-height: 1.78;
            margin-top: 8px;
            max-width: 560px;
        }
        .xn_hero_tags {
            display: flex;
            flex-wrap: wrap;
            gap: 9px;
            margin-top: 16px;
        }
        .xn_hero_tag {
            display: inline-block;
            background: #f0f4fa;
            color: #1e4b8c;
            font-size: 12px;
            padding: 5px 12px;
            border-radius: 3px;
            letter-spacing: 0.04em;
            font-weight: 500;
            border: 1px solid #dce4f2;
        }

        /* 栏目缩略图容器 */
        .xn_hero_thumb {
            flex: 0 0 420px;
            max-width: 420px;
            min-height: 260px;
            background: #eef1f6;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            position: relative;
        }
        .xn_hero_thumb img {
            width: 100%;
            /*height: 100%;*/
            object-fit: cover;
            display: block;
            transition: transform 0.4s ease;
        }
        .xn_hero_thumb img:hover {
            transform: scale(1.03);
        }
        /* 缩略图占位标识 - 替换图片后自动消失 */
        .xn_thumb_placeholder {
            position: absolute;
            pointer-events: none;
            color: #b0bcc9;
            font-size: 14px;
            letter-spacing: 0.05em;
            text-align: center;
            z-index: 1;
        }
        .xn_hero_thumb img[src=""],
        .xn_hero_thumb img:not([src]),
        .xn_hero_thumb img[src="#"] {
            visibility: hidden;
        }

        @media (max-width: 860px) {
            .xn_hero_thumb {
                flex: 0 0 100%;
                max-width: 100%;
                min-height: 200px;
                height: 220px;
            }
            .xn_hero_text {
                padding: 22px 18px 20px 20px;
            }
            .xn_hero_text h1 {
                font-size: 22px;
            }
        }

        /* --- 区块标题 --- */
        .xn_sec_title {
            font-size: 20px;
            font-weight: 700;
            color: #111827;
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid #e5e8ec;
            position: relative;
            letter-spacing: 0.03em;
        }
        .xn_sec_title::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 52px;
            height: 2px;
            background: #1a56db;
        }

        /* --- 通用卡片面板 --- */
        .xn_panel {
            background: #ffffff;
            border-radius: 8px;
            padding: 28px 30px;
            margin-bottom: 22px;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
            border: 1px solid #e5e8ec;
        }
        @media (max-width: 600px) {
            .xn_panel {
                padding: 18px 14px;
            }
        }

        /* --- 技术参数表 --- */
        .xn_param_sheet {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
            table-layout: auto;
        }
        .xn_param_sheet thead th {
            background: #f1f4f8;
            color: #1f2937;
            font-weight: 600;
            padding: 11px 14px;
            text-align: left;
            border-bottom: 2px solid #d0d6e0;
            font-size: 13px;
            letter-spacing: 0.04em;
            white-space: nowrap;
        }
        .xn_param_sheet tbody td {
            padding: 10px 14px;
            border-bottom: 1px solid #eef1f5;
            color: #3a3f4a;
            vertical-align: top;
        }
        .xn_param_sheet tbody tr:nth-child(even) td {
            background: #fafbfd;
        }
        .xn_param_note {
            font-size: 12px;
            color: #7c8490;
            margin-top: 8px;
            line-height: 1.6;
            background: #fdfcf8;
            border-left: 3px solid #e5c76b;
            padding: 8px 13px;
            border-radius: 3px;
        }

        /* --- 设备品牌卡片 --- */
        .xn_brand_row {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 10px;
        }
        .xn_brand_card {
            flex: 1 1 180px;
            min-width: 150px;
            background: #f8fafc;
            border: 1px solid #e5e9ef;
            border-radius: 6px;
            padding: 16px 14px;
            text-align: center;
            transition: border-color 0.2s;
        }
        .xn_brand_card:hover {
            border-color: #bcc7d8;
        }
        .xn_brand_card strong {
            display: block;
            font-size: 15px;
            color: #1f2937;
            font-weight: 700;
            letter-spacing: 0.03em;
        }
        .xn_brand_card span {
            display: block;
            font-size: 12px;
            color: #6b7280;
            margin-top: 4px;
        }
        .xn_brand_origin {
            font-size: 11px;
            color: #999;
            display: block;
            margin-top: 2px;
        }

        /* --- 资质列表 --- */
        .xn_cert_grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 12px;
            margin-top: 8px;
        }
        .xn_cert_item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px dotted #e5e8ec;
            font-size: 14px;
            color: #2c3440;
        }
        .xn_cert_icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            background: #e8edf6;
            border-radius: 3px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: #1a56db;
            font-weight: 700;
        }
        .xn_cert_item strong {
            font-weight: 600;
            color: #1a1f2b;
        }

        /* --- 服务流程 --- */
        .xn_step_flow {
            display: flex;
            flex-wrap: wrap;
            gap: 0;
            counter-reset: xn_step;
            margin-top: 12px;
        }
        .xn_step_node {
            flex: 1 1 180px;
            min-width: 140px;
            position: relative;
            padding: 20px 14px 14px;
            text-align: center;
            counter-increment: xn_step;
        }
        .xn_step_node::before {
            content: counter(xn_step);
            display: block;
            width: 34px;
            height: 34px;
            margin: 0 auto 10px;
            background: #1a56db;
            color: #fff;
            border-radius: 50%;
            font-weight: 700;
            font-size: 15px;
            line-height: 34px;
            text-align: center;
        }
        .xn_step_node::after {
            content: "";
            position: absolute;
            top: 36px;
            right: -8px;
            width: 16px;
            height: 2px;
            background: #d0d6e0;
        }
        .xn_step_node:last-child::after {
            display: none;
        }
        .xn_step_node strong {
            display: block;
            font-size: 14px;
            color: #1f2937;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .xn_step_node span {
            display: block;
            font-size: 12px;
            color: #6b7280;
            line-height: 1.5;
        }
        @media (max-width: 700px) {
            .xn_step_node::after {
                display: none;
            }
        }

        /* --- 报价框架 --- */
        .xn_quote_frame {
            background: #fafcfd;
            border: 1px solid #e0e4ea;
            border-radius: 8px;
            padding: 20px 22px;
            margin-top: 8px;
        }
        .xn_quote_frame table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
        }
        .xn_quote_frame thead th {
            background: #edf1f6;
            padding: 10px 12px;
            text-align: left;
            font-weight: 600;
            font-size: 13px;
            color: #1f2937;
            border-bottom: 2px solid #cdd4df;
        }
        .xn_quote_frame tbody td {
            padding: 9px 12px;
            border-bottom: 1px solid #eef1f5;
            color: #3a3f4a;
        }
        .xn_quote_note {
            margin-top: 10px;
            font-size: 12px;
            color: #8b919d;
            line-height: 1.7;
        }

        /* --- 底部信息条 --- */
        .xn_info_strip {
            background: #f4f6f9;
            border-radius: 6px;
            padding: 16px 20px;
            margin-top: 18px;
            font-size: 13px;
            color: #4b5563;
            line-height: 1.7;
            border: 1px solid #e5e8ec;
        }

        /* --- 响应式辅助 --- */
        @media (max-width: 600px) {
            .xn_hero_tags {
                gap: 5px;
            }
            .xn_hero_tag {
                font-size: 11px;
                padding: 4px 9px;
            }
            .xn_cert_grid {
                grid-template-columns: 1fr;
            }
            .xn_param_sheet {
                font-size: 12px;
            }
            .xn_param_sheet thead th,
            .xn_param_sheet tbody td {
                padding: 7px 8px;
            }
        }

        /* 打印样式 */
        @media print {
            .xn_pg_wrap {
                background: #fff;
                color: #000;
                font-size: 13px;
            }
            .xn_panel {
                box-shadow: none;
                border: 1px solid #ccc;
                break-inside: avoid;
            }
        }