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

        .xn_page-wrap {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", "Microsoft YaHei", sans-serif;
            font-size: 15px;
            line-height: 1.7;
            color: #2c2c2c;
            background: #f7f5f2;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            max-width: 100%;
            overflow-x: hidden;
        }

        .xn_page-wrap img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        /* --- 面包屑导航 xn_crumb --- */
        .xn_crumb-bar {
            background: #fafaf8;
            border-bottom: 1px solid #e8e5df;
            padding: 0 0;
        }
        .xn_crumb-inner {
            max-width: 1160px;
            margin: 0 auto;
            padding: 13px 24px;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13.5px;
            color: #6b6b6b;
        }
        .xn_crumb-inner a {
            color: #4a4a4a;
            text-decoration: none;
            transition: color 0.18s;
        }
        .xn_crumb-inner a:hover {
            color: #1a6fb5;
            text-decoration: underline;
        }
        .xn_crumb-sep {
            color: #c0bcb2;
            font-size: 11px;
            user-select: none;
            margin: 0 2px;
        }
        .xn_crumb-current {
            color: #1a1a1a;
            font-weight: 600;
        }

        /* --- 主内容区 xn_main --- */
        .xn_main {
            max-width: 1160px;
            margin: 0 auto;
            padding: 28px 24px 60px;
        }

        /* --- H1 标题区 + 栏目缩略图 xn_hero --- */
        .xn_hero-block {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            align-items: flex-start;
            margin-bottom: 36px;
            background: #ffffff;
            border-radius: 6px;
            padding: 28px 30px;
            box-shadow: 0 1px 5px rgba(0, 0, 0, 0.04);
            border: 1px solid #eae6de;
        }
        .xn_hero-imgbox {
            flex: 0 0 340px;
            max-width: 100%;
            aspect-ratio: 4 / 3;
            overflow: hidden;
            border-radius: 4px;
            background: #ece9e1;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .xn_hero-imgbox img {
            width: 100%;
            /*height: 100%;*/
            object-fit: cover;
            display: block;
            transition: opacity 0.3s;
        }
        /* 占位标识 — 替换图片后自动消失 */
        .xn_hero-imgbox .xn_img-placeholder-tag {
            position: absolute;
            bottom: 10px;
            right: 12px;
            background: rgba(0, 0, 0, 0.55);
            color: #fff;
            font-size: 11px;
            padding: 3px 9px;
            border-radius: 2px;
            pointer-events: none;
            letter-spacing: 0.5px;
        }
        .xn_hero-text {
            flex: 1;
            min-width: 260px;
        }
        .xn_hero-text h1 {
            font-size: 26px;
            font-weight: 700;
            color: #1a1a1a;
            line-height: 1.35;
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }
        .xn_hero-text h1 span {
            color: #b5451a;
        }
        .xn_hero-subtitle {
            font-size: 14.5px;
            color: #5f5f5f;
            margin-bottom: 14px;
            line-height: 1.6;
        }
        .xn_hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .xn_hero-tags span {
            display: inline-block;
            background: #f0ede5;
            color: #3d3d3d;
            font-size: 12.5px;
            padding: 5px 13px;
            border-radius: 3px;
            letter-spacing: 0.4px;
            border: 1px solid #ddd9ce;
        }

        /* --- 章节通用 xn_section --- */
        .xn_section {
            background: #ffffff;
            border-radius: 6px;
            padding: 28px 30px;
            margin-bottom: 22px;
            box-shadow: 0 1px 5px rgba(0, 0, 0, 0.04);
            border: 1px solid #eae6de;
        }
        .xn_section h2 {
            font-size: 20px;
            font-weight: 700;
            color: #1a1a1a;
            margin-bottom: 16px;
            padding-left: 14px;
            border-left: 4px solid #c75b2e;
            line-height: 1.3;
            letter-spacing: 0.3px;
        }
        .xn_section h3 {
            font-size: 16.5px;
            font-weight: 600;
            color: #2a2a2a;
            margin: 18px 0 10px;
        }
        .xn_section h3:first-of-type {
            margin-top: 4px;
        }
        .xn_section p {
            margin-bottom: 10px;
            color: #3d3d3d;
            font-size: 14.5px;
            line-height: 1.75;
        }
        .xn_section ul,
        .xn_section ol {
            margin: 8px 0 14px 18px;
            color: #3d3d3d;
            font-size: 14.5px;
            line-height: 1.75;
        }
        .xn_section li {
            margin-bottom: 5px;
        }

        /* --- 参数透明卡片 xn_param-grid --- */
        .xn_param-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 16px;
            margin-top: 14px;
        }
        .xn_param-card {
            background: #fbfaf6;
            border: 1px solid #e8e4da;
            border-radius: 5px;
            padding: 18px 16px;
            text-align: center;
        }
        .xn_param-card .xn_param-val {
            font-size: 28px;
            font-weight: 700;
            color: #b5451a;
            line-height: 1.2;
        }
        .xn_param-card .xn_param-unit {
            font-size: 13px;
            color: #6b6b6b;
            font-weight: 400;
        }
        .xn_param-card .xn_param-label {
            font-size: 13px;
            color: #5f5f5f;
            margin-top: 4px;
        }
        .xn_param-note {
            font-size: 12.5px;
            color: #8a8a8a;
            margin-top: 6px;
            text-align: center;
            font-style: italic;
        }

        /* --- 资质列表 xn_cert-list --- */
        .xn_cert-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 10px;
            margin-top: 10px;
        }
        .xn_cert-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: #3d3d3d;
            padding: 10px 12px;
            background: #fbfaf6;
            border-radius: 4px;
            border: 1px solid #ece8dd;
        }
        .xn_cert-icon {
            flex: 0 0 20px;
            width: 20px;
            height: 20px;
            background: #c75b2e;
            color: #fff;
            border-radius: 3px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            line-height: 1;
            margin-top: 1px;
        }

        /* --- 服务流程 xn_flow --- */
        .xn_flow-row {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 12px;
        }
        .xn_flow-step {
            flex: 1;
            min-width: 140px;
            background: #fbfaf6;
            border: 1px solid #e8e4da;
            border-radius: 5px;
            padding: 18px 14px;
            text-align: center;
            position: relative;
        }
        .xn_flow-step .xn_step-num {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: #c75b2e;
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 10px;
        }
        .xn_flow-step h4 {
            font-size: 14.5px;
            font-weight: 600;
            color: #1a1a1a;
            margin-bottom: 4px;
        }
        .xn_flow-step p {
            font-size: 12.5px;
            color: #5f5f5f;
            line-height: 1.5;
            margin: 0;
        }

        /* --- 报价构成表 xn_quote-table --- */
        .xn_quote-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            margin-top: 10px;
        }
        .xn_quote-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
            min-width: 620px;
        }
        .xn_quote-table thead th {
            background: #3d3d3d;
            color: #f5f5f0;
            padding: 12px 14px;
            text-align: left;
            font-weight: 600;
            font-size: 13.5px;
            letter-spacing: 0.4px;
            white-space: nowrap;
        }
        .xn_quote-table tbody td {
            padding: 11px 14px;
            border-bottom: 1px solid #e8e5df;
            color: #3d3d3d;
            vertical-align: top;
        }
        .xn_quote-table tbody tr:nth-child(even) td {
            background: #fbfaf6;
        }
        .xn_quote-table .xn_col-tag {
            display: inline-block;
            background: #e8e4da;
            color: #4a4a4a;
            font-size: 11.5px;
            padding: 3px 8px;
            border-radius: 2px;
            margin: 2px 3px 2px 0;
            white-space: nowrap;
        }

        /* --- 设备品牌表 xn_brand --- */
        .xn_brand-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 10px;
            margin-top: 10px;
        }
        .xn_brand-card {
            background: #fbfaf6;
            border: 1px solid #e8e4da;
            border-radius: 5px;
            padding: 14px 16px;
        }
        .xn_brand-card h4 {
            font-size: 14px;
            font-weight: 600;
            color: #1a1a1a;
            margin-bottom: 4px;
        }
        .xn_brand-card p {
            font-size: 13px;
            color: #5f5f5f;
            margin: 0;
            line-height: 1.55;
        }

        /* --- 警示/提示条 xn_notice --- */
        .xn_notice {
            background: #fdf8f4;
            border-left: 4px solid #c75b2e;
            padding: 14px 18px;
            border-radius: 0 5px 5px 0;
            margin: 14px 0;
            font-size: 13.5px;
            color: #4a3a2e;
            line-height: 1.7;
        }
        .xn_notice strong {
            color: #b5451a;
        }

        /* --- 联系咨询条 xn_cta --- */
        .xn_cta-bar {
            background: #2c2c28;
            color: #f0ede5;
            border-radius: 6px;
            padding: 24px 28px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            margin-top: 6px;
        }
        .xn_cta-bar p {
            margin: 0;
            font-size: 15px;
            line-height: 1.6;
            color: #d5d2c8;
        }
        .xn_cta-bar .xn_cta-phone {
            font-size: 24px;
            font-weight: 700;
            color: #f5f0e5;
            letter-spacing: 1px;
            white-space: nowrap;
        }
        .xn_cta-btn {
            display: inline-block;
            background: #c75b2e;
            color: #fff;
            padding: 12px 28px;
            border-radius: 4px;
            text-decoration: none;
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.5px;
            transition: background 0.2s;
            white-space: nowrap;
        }
        .xn_cta-btn:hover {
            background: #a84a24;
        }

        /* --- 响应式 --- */
        @media (max-width: 768px) {
            .xn_hero-block {
                flex-direction: column;
                gap: 20px;
                padding: 20px 16px;
            }
            .xn_hero-imgbox {
                flex: 0 0 auto;
                width: 100%;
                aspect-ratio: 16 / 10;
            }
            .xn_hero-text h1 {
                font-size: 21px;
            }
            .xn_section {
                padding: 20px 16px;
            }
            .xn_section h2 {
                font-size: 17.5px;
            }
            .xn_param-grid {
                grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
                gap: 10px;
            }
            .xn_param-card .xn_param-val {
                font-size: 22px;
            }
            .xn_cert-grid {
                grid-template-columns: 1fr;
            }
            .xn_flow-row {
                flex-direction: column;
            }
            .xn_cta-bar {
                flex-direction: column;
                text-align: center;
                padding: 20px 16px;
            }
            .xn_cta-bar .xn_cta-phone {
                font-size: 20px;
            }
        }
        @media (max-width: 480px) {
            .xn_main {
                padding: 16px 10px 40px;
            }
            .xn_crumb-inner {
                padding: 10px 12px;
                font-size: 12px;
            }
            .xn_hero-block {
                padding: 14px 12px;
                gap: 14px;
            }
            .xn_hero-text h1 {
                font-size: 19px;
            }
            .xn_section {
                padding: 16px 12px;
                margin-bottom: 14px;
            }
            .xn_section h2 {
                font-size: 16px;
                padding-left: 10px;
                border-left-width: 3px;
            }
            .xn_param-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .xn_param-card {
                padding: 12px 10px;
            }
            .xn_param-card .xn_param-val {
                font-size: 20px;
            }
        }