* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Microsoft YaHei", sans-serif;
        }
        body {
            color: #333;
            background: #f0f2f5;
            line-height: 1.7;
        }
        /* Banner区域（差异化：工业风背景+警示色强调） */
        .banner {
            width: 100%;
            position: relative;
            height: 605px;
            overflow: hidden;
            background: #2c3e50;
        }
        .banner-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            opacity: 0.7;
        }
        .banner-content {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            color: #fff;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            padding: 0 20px;
            background-color: rgb(31 102 211 / 50%);
        }
        .banner-content .warning-tag {
            display: inline-block;
            padding: 8px 20px;
            background: #e74c3c;
            border-radius: 4px;
            font-size: 14px;
            margin-bottom: 20px;
            font-weight: bold;
        }
        .banner-content h1 {
            font-size: 40px;
            margin-bottom: 15px;
            font-weight: bold;
            line-height: 1.2;
        }
        .banner-content p {
            font-size: 18px;
            margin-bottom: 30px;
            opacity: 0.95;
        }
        .banner-content .btn {
            display: inline-block;
            padding: 14px 40px;
            background: #e74c3c;
            color: #fff;
            text-decoration: none;
            border-radius: 4px;
            font-size: 16px;
            font-weight: bold;
            box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
            transition: all 0.3s ease;
        }
        .banner-content .btn:hover {
            background: #c0392b;
        }
        /* 面包屑导航（保留class="nav"，工业风样式） */
        .nav {
            width: 100%;
            padding: 20px 8%;
            background: #fff;
            font-size: 14px;
            border-bottom: 1px solid #e1e4e8;
        }
        .nav a {
            color: #666;
            text-decoration: none;
            margin-right: 8px;
        }
        .nav a:hover {
            color: #e74c3c;
        }
        .nav span {
            color: #999;
            margin: 0 5px;
        }
        .nav .current {
            color: #e74c3c;
            font-weight: bold;
        }
        /* 通用容器样式 */
        .content-wrap {
            width: 85%;
            margin: 0 auto;
            padding: 70px 0;
        }
        /* 模块标题（差异化：工业风下划线+警示色） */
        .title-box {
            margin-bottom: 60px;
        }
        .main-title {
            font-size: 30px;
            color: #2c3e50;
            position: relative;
            padding-bottom: 15px;
            display: inline-block;
        }
        .main-title::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 60px;
            height: 3px;
            background: #e74c3c;
        }
        .sub-title {
            font-size: 16px;
            color: #7f8c8d;
            margin-top: 10px;
            font-weight: normal;
        }
        /* 防爆等级认证模块（全新模块） */
        .cert-module {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            margin-bottom: 80px;
            align-items: center;
        }
        .cert-left {
            flex: 1;
            min-width: 350px;
        }
        .cert-right {
            flex: 1;
            min-width: 350px;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .cert-card {
            background: #fff;
            padding: 25px;
            border-radius: 8px;
            border-top: 3px solid #e74c3c;
            box-shadow: 0 3px 15px rgba(0, 0, 0, 0.05);
            text-align: center;
        }
        .cert-card img {
            width: 70px;
            height: 70px;
            object-fit: contain;
            margin: 0 auto 15px;
            display: block;
        }
        .cert-card h4 {
            font-size: 18px;
            color: #2c3e50;
            margin-bottom: 8px;
        }
        .cert-card p {
            font-size: 14px;
            color: #7f8c8d;
        }
        /* 应用场景（差异化：卡片式+交替布局） */
        .scene-wrap {
            margin-bottom: 80px;
        }
        .scene-item {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            margin-bottom: 50px;
            align-items: center;
        }
        .scene-item.reverse {
            flex-direction: row-reverse;
        }
        .scene-img-box {
            flex: 1;
            min-width: 350px;
            height: 320px;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
        }
        .scene-img-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .scene-text-box {
            flex: 1;
            min-width: 350px;
        }
        .scene-text-box h3 {
            font-size: 22px;
            color: #2c3e50;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
        }
        .scene-text-box h3::before {
            content: "";
            display: inline-block;
            width: 4px;
            height: 20px;
            background: #e74c3c;
            margin-right: 10px;
        }
        .scene-text-box ul {
            list-style: none;
        }
        .scene-text-box li {
            font-size: 16px;
            color: #555;
            margin-bottom: 12px;
            padding-left: 20px;
            position: relative;
        }
        .scene-text-box li::before {
            content: "✓";
            color: #e74c3c;
            position: absolute;
            left: 0;
            font-weight: bold;
        }
        /* 安全防护体系（全新模块） */
        .safety-module {
            background: #2c3e50;
            padding: 60px 0;
            border-radius: 8px;
            margin-bottom: 80px;
            color: #fff;
        }
        .safety-inner {
            width: 85%;
            margin: 0 auto;
        }
        .safety-title {
            font-size: 26px;
            text-align: center;
            margin-bottom: 40px;
            position: relative;
            padding-bottom: 15px;
        }
        .safety-title::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 0;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background: #e74c3c;
        }
        .safety-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }
        .safety-card {
            background: rgba(255, 255, 255, 0.1);
            padding: 30px 20px;
            border-radius: 8px;
            text-align: center;
        }
        .safety-card .icon {
            width: 60px;
            height: 60px;
            background: rgba(231, 76, 60, 0.2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
        }
        .safety-card .icon img {
            width: 100px;
            height: 100px;
            object-fit: contain;
        }
        .safety-card h4 {
            font-size: 18px;
            margin-bottom: 10px;
        }
        .safety-card p {
            font-size: 14px;
            opacity: 0.8;
            line-height: 1.6;
        }
        /* 合规检测流程（差异化：步骤式进度条） */
        .check-process {
            margin-bottom: 80px;
        }
        .process-steps {
            position: relative;
            padding: 20px 0;
        }
        .process-steps::before {
            content: "";
            position: absolute;
            top: 50%;
            left: 0;
            width: 100%;
            height: 2px;
            background: #e1e4e8;
            z-index: 1;
        }
        .step-list {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }
        .step-item {
            width: 180px;
            text-align: center;
            margin-bottom: 20px;
        }
        .step-dot {
            width: 24px;
            height: 24px;
            background: #e74c3c;
            border-radius: 50%;
            margin: 0 auto 15px;
            position: relative;
            z-index: 3;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 12px;
            font-weight: bold;
        }
        .step-item img {
            width: 100px;
            height: 100px;
            object-fit: contain;
            margin: 0 auto 10px;
            display: block;
        }
        .step-item h4 {
            font-size: 16px;
            color: #2c3e50;
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 13px;
            color: #7f8c8d;
        }
        /* 核心优势（差异化：列表+图标组合） */
        .advantage-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            margin-bottom: 80px;
            align-items: flex-start;
        }
        .advantage-img {
            flex: 1;
            min-width: 350px;
            height: 100%;
            border-radius: 8px;
            overflow: hidden;
        }
        .advantage-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .advantage-list {
            flex: 1;
            min-width: 350px;
        }
        .advantage-item1 {
            display: flex;
            align-items: flex-start;
            margin-bottom: 25px;
        }
        .advantage-icon1 {
            width: 100px;
            height: 100px;
            background: rgba(231, 76, 60, 0.1);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 50px;
            flex-shrink: 0;
        }
        .advantage-icon1 img {
            width: 100px;
            height: 100px;
            object-fit: contain;
        }
        .advantage-text h4 {
            font-size: 18px;
            color: #2c3e50;
            margin-bottom: 8px;
        }
        .advantage-text p {
            font-size: 14px;
            color: #7f8c8d;
            line-height: 1.6;
        }
        /* 响应式适配 */
        @media (max-width: 992px) {
            .content-wrap, .safety-inner {
                width: 90%;
            }
            .banner {
                height: 400px;
            }
            .banner-content h1 {
                font-size: 32px;
            }
            .scene-item.reverse {
                flex-direction: column;
            }
            .step-item {
                width: 140px;
            }
        }
        @media (max-width: 576px) {
            .banner {
                height: 580px;
            }
            .banner-content h1 {
                font-size: 26px;
            }
            .main-title {
                font-size: 24px;
            }
            .cert-right {
                grid-template-columns: 1fr;
            }
            .step-item {
                width: 100%;
                margin-bottom: 30px;
            }
            .process-steps::before {
                display: none;
            }
        }