:root {
            --primary: #165DFF;
            --primary-light: #E8F3FF;
            --primary-dark: #0E42CC;
            --gray-light: #F5F7FA;
            --gray: #E5E9F2;
            --gray-dark: #4E5969;
            --text-dark: #1D2129;
            --text-light: #86909C;
            --white: #FFFFFF;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
            --transition: all 0.3s ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', sans-serif;
            color: var(--text-dark);
            background-color: var(--white);
            line-height: 1.6;
        }

        h1, h2, h3, h4, h5, h6 {
            font-weight: 600;
            line-height: 1.3;
            margin-bottom: 1rem;
        }

        h1 {
            font-size: 3rem;
        }

        h2 {
            font-size: 2.6rem;
        }

        h3 {
            font-size: 2rem;
        }

        p {
            margin-bottom: 1rem;
            color: var(--gray-dark);
        }

        a {
            text-decoration: none;
            color: var(--primary);
            transition: var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
        }
	 /* 修复列表样式 */
			ul {
				margin-bottom: 1rem;
				padding-left: 1.5rem;
			}


        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .btn {
            display: inline-block;
            padding: 12px 24px;
            font-weight: 500;
            text-align: center;
            border-radius: 6px;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            font-size: 1rem;
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--white);

        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            color: var(--white);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }

        .btn-secondary {
            background-color: var(--white);
            color: var(--primary);
            border: 1px solid var(--primary);
        }

        .btn-secondary:hover {
            background-color: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }

        .section {
            padding: 100px 0;
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .section.visible {
            opacity: 1;
            transform: translateY(0);
			
			
        }

        .section-light {
            background-color: var(--gray-light);
        }

        .section-white {
            background-color: var(--white);
        }

        .section-title {
            text-align: center;
            margin-bottom: 4rem;
            position: relative;
        }

        .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background-color: var(--primary);
            margin: 1rem auto 0;
            border-radius: 2px;
        }

        .text-center {
            text-align: center;
        }

        .mb-2 {
            margin-bottom: 0.5rem;
        }

        .mb-4 {
            margin-bottom: 1rem;
        }

        .mb-6 {
            margin-bottom: 1.5rem;
        }

        .mb-8 {
            margin-bottom: 2rem;
        }

        .mt-4 {
            margin-top: 1rem;
        }

        .mt-8 {
            margin-top: 2rem;
        }

        .flex {
            display: flex;
        }

        .flex-col {
            flex-direction: column;
        }

        .justify-center {
            justify-content: center;
        }

        .justify-between {
            justify-content: space-between;
        }

        .items-center {
            align-items: center;
        }

        .gap-4 {
            gap: 1rem;
        }

        .gap-6 {
            gap: 1.5rem;
        }

        .gap-8 {
            gap: 2rem;
        }

        .grid {
            display: grid;
        }

        .grid-cols-2 {
            grid-template-columns: repeat(2, 1fr);
        }

        .grid-cols-3 {
            grid-template-columns: repeat(3, 1fr);
        }

        .grid-cols-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        .card {
            background-color: var(--white);
            border-radius: 8px;
            padding: 2rem;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-5px);
        }

        .icon-box {
            width: 60px;
            height: 60px;
            border-radius: 8px;
            background-color: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            color: var(--primary);
            font-size: 1.5rem;
        }

        .video-container {
	position: relative;
    width: 100%;
    max-width: 980px;
    height: auto;
    margin: 0 auto;
    border: 12px solid #a3a3a3;
    border-radius: 0px;
    overflow: hidden;
    cursor: pointer;
        }

        /* 视频自适应尺寸，保持980*550比例 */
        #video-player {
            width: 100%;
            height: auto;
            aspect-ratio: 978 / 550;
            display: block;
        }

        /* 无声音提示 */
        .mute-notification {
            position: absolute;
            top: 15px;
            left: 15px;
            background-color: rgba(0, 0, 0, 0.7);
            color: white;
            padding: 8px 12px;
            border-radius: 4px;
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
            z-index: 10;
        }

        /* 中央播放按钮 */
        .play-button {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 100px;
            height: 100px;
            border-radius: 50%;
            background-color: rgba(22, 93, 255, 0.9);
            display: flex;
            justify-content: center;
            align-items: center;
            color: white;
            font-size: 32px;
            z-index: 5;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        .play-button:hover {
            transform: translate(-50%, -50%) scale(1.1);
        }

        /* 暂停状态图标 */
        .play-button.paused i {
            content: "\f04c"; /* FontAwesome暂停图标代码 */
        }

        /* 播放状态隐藏按钮 */
        .play-button.hidden {
            opacity: 0;
            pointer-events: none;
        }
		
        /* Hero Section */
        .hero {
            padding: 50px 0 50px;
			background-image: linear-gradient(rgba(22, 93, 255, 0.05), rgba(22, 93, 255, 0.05)), url('/template/default/assets/images/oem/back1.png');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            position: relative;
        }

        .hero-content {
			max-width: 80%;
			margin: auto;
        }

		.hero h1 {
			font-size: 3.3rem;
			margin-bottom: -0.5rem;
			text-align: center;
			color: #d30707;
			text-shadow: -1px -1px 0 #e4e4e4, 1px -1px 0 #727272, -1px 1px 0 #b7b7b7, 1px 1px 0 #cacaca;
			text-transform: uppercase;
		}

        .hero p {
            margin-bottom: 3rem;
			font-size: 1.9rem;
			text-align: center;
			color: #23d500;
			text-shadow: -1px -1px 0 #e4e4e4, 1px -1px 0 #e8e8e8, -1px 1px 0 #dddddd, 1px 1px 0 #e1e1e1;
        }

        /* Product Showcase */
        .product-img {
            width: 100%;
            height: 250px;
            object-fit: cover;
            border-radius: 8px;
            margin-bottom: 1.5rem;
        }

        /* Certifications */
        .cert-logo {
            max-width: 150px;
            height: auto;
            opacity: 0.8;
            transition: var(--transition);
        }

        .cert-logo:hover {
            opacity: 1;
            transform: scale(1.05);
        }

        /* Service Flow */
  .timeline {
            position: relative;
            max-width: 1200px;
            margin: 0 auto;
        }

        .timeline::after {
            content: '';
            position: absolute;
            width: 6px;
            background-color: var(--primary-light);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -3px;
            border-radius: 3px;
        }

        .timeline-item {
            padding: 10px 40px;
            position: relative;
            width: 50%;
            box-sizing: border-box;
            margin-bottom: 30px;
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            background-color: white;
            border: 4px solid var(--primary);
            top: 20px;
            border-radius: 50%;
            z-index: 1;
        }

        .timeline-left {
            left: 0;
        }

        .timeline-right {
            left: 50%;
        }

        .timeline-left::after {
            right: -13px;
        }

        .timeline-right::after {
            left: -13px;
        }

        .timeline-content {
            padding: 20px;
            background-color: white;
            border-radius: 8px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .timeline-content:hover {
            box-shadow: var(--shadow-hover);
        }

        .timeline-step {
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
            display: inline-block;
            background-color: var(--primary-light);
            padding: 3px 10px;
            border-radius: 12px;
            font-size: 0.9rem;
        }

        /* Factory Photos */
        .factory-gallery {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 1rem;
        }

        .factory-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 8px;
            transition: var(--transition);
            cursor: pointer;
        }

        .factory-img:hover {
            transform: scale(1.03);
        }

         /* Testimonials with avatars */
        .testimonial-slider {
            position: relative;
            overflow: hidden;
            max-width: 800px;
            margin: 0 auto;
        }

        .testimonial-track {
            display: flex;
            transition: transform 0.5s ease;
        }

        .testimonial-slide {
            min-width: 100%;
            padding: 2rem;
        }

        .testimonial-header {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 1.5rem;
        }

        .testimonial-avatar {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            object-fit: cover;
            border: 3px solid var(--primary-light);
        }

        .testimonial-text {
            font-style: italic;
            margin-bottom: 1.5rem;
        }

        .testimonial-author {
            font-weight: 600;
        }

        .testimonial-company {
            color: var(--text-light);
            font-size: 0.9rem;
        }

        .slider-nav {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin-top: 1.5rem;
        }

        .slider-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background-color: var(--gray);
            cursor: pointer;
            transition: var(--transition);
        }

        .slider-dot.active {
            background-color: var(--primary);
        }

        .slider-btn {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            background-color: rgba(255, 255, 255, 0.8);
            border: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .slider-btn:hover {
            background-color: var(--white);
        }

        .slider-prev {
            left: 10px;
        }

        .slider-next {
            right: 10px;
        }

        /* Client Logos */
        .client-logos {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            gap: 3rem;
        }

        .client-logo {
            max-height: 80px;
            opacity: 0.7;
            transition: var(--transition);
        }

        .client-logo:hover {
            opacity: 1;
            transform: scale(1.05);
        }

        /* FAQ */
        .faq-item {
            margin-bottom: 1rem;
            border: 1px solid var(--gray);
            border-radius: 8px;
            overflow: hidden;
        }

        .faq-question {
            width: 100%;
            padding: 1rem 1.5rem;
            background-color: var(--white);
            border: none;
            text-align: left;
            font-weight: 500;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-answer {
            padding: 0 1.5rem;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
        }

        .faq-answer.active {
            padding: 1.5rem;
            max-height: 500px;
        }

        /* Contact Form */
        .contact-form {
            max-width: 600px;
            margin: 0 auto;
        }

        .form-group {
            margin-bottom: 1.5rem;
            position: relative;
        }

        .form-label {
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            background-color: var(--white);
            padding: 0 5px;
            transition: var(--transition);
            pointer-events: none;
            color: var(--text-light);
        }

        .form-input:focus + .form-label,
        .form-input:not(:placeholder-shown) + .form-label {
            top: 0;
            font-size: 0.85rem;
            color: var(--primary);
        }

        .form-input {
            width: 100%;
            padding: 15px;
            border: 1px solid var(--gray);
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }

        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(22, 93, 255, 0.1);
        }

        .form-textarea {
            min-height: 150px;
            resize: vertical;
        }

       

        /* Responsive */
        @media (max-width: 992px) {
            .grid-cols-4 {
                grid-template-columns: repeat(2, 1fr);
            }

            .hero h1 {
                font-size: 2.5rem;
            }
        }

        @media (max-width: 768px) {
            .grid-cols-3, .grid-cols-2 {
                grid-template-columns: 1fr;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background-color: var(--white);
                flex-direction: column;
                padding: 1rem 20px;
                box-shadow: var(--shadow);
            }

            .nav-links.active {
                display: flex;
            }

            .mobile-menu-btn {
                display: block;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .section {
                padding: 60px 0;
            }

            .sticky-cta {
                top: 70px;
                right: 10px;
            }

            .btn {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
        }

        @media (max-width: 576px) {
            h1 {
                font-size: 1.8rem;
            }

            h2 {
                font-size: 1.5rem;
            }

            h3 {
                font-size: 1.25rem;
            }

            .hero {
                padding: 120px 0 80px;
            }

            .sticky-cta {
                flex-direction: row;
                top: auto;
                bottom: 20px;
                left: 50%;
                transform: translateX(-50%);
                width: calc(100% - 40px);
                justify-content: center;
            }
        }