/* ===== CSS 变量 & 重置 ===== */
        :root {
            --primary: #4687f0;
            --primary-dark: #2558b8;
            --primary-light: #73b8ff;
            --dark: #1a1a1a;
            --gray: #666;
            --light-gray: #f8f8f8;
            --white: #fff;
            --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            --radius: 6px;
            --transition: 0.3s ease;
            --nav-height: 80px;
            --nav-height-mobile: 64px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            list-style: none;
            text-decoration: none;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: "Microsoft Yahei", "PingFang SC", -apple-system, BlinkMacSystemFont, sans-serif;
            color: var(--gray);
            background: #fff;
            line-height: 1.6;
            overflow-x: hidden;
        }

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

        a {
            color: inherit;
        }

        /* ===== 导航栏 ===== */
        .header-nav-wrap {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 99999;
            padding: 0 clamp(16px, 4%, 60px);
            min-height: var(--nav-height-mobile);
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: background var(--transition), box-shadow var(--transition);
            background: rgba(0, 0, 0, 0.2);
            backdrop-filter: blur(2px);
            -webkit-backdrop-filter: blur(2px);
        }

        .header-nav-wrap.fixed-nav {
            background: #ffffff;
            box-shadow: var(--shadow);
            backdrop-filter: none;
            -webkit-backdrop-filter: none;
        }

        .logo {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            z-index: 10;
        }

        .logo img {
            height: clamp(44px, 6vw, 76px);
            width: auto;
            object-fit: contain;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: clamp(6px, 1.2vw, 16px);
        }

        .nav-list li a {
            display: block;
            color: #fff;
            font-size: clamp(14px, 1.1vw, 16px);
            padding: 8px 12px;
            position: relative;
            transition: color var(--transition);
            white-space: nowrap;
            font-weight: 500;
            letter-spacing: 0.3px;
        }

        .header-nav-wrap.fixed-nav .nav-list li a {
            color: #333;
        }

        .nav-list li a::after {
            content: '';
            position: absolute;
            left: 12px;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width var(--transition);
        }

        .nav-list li a:hover {
            color: var(--primary);
        }
        /* 当前页面高亮 */
        .nav-list li a.active {
            color: var(--primary) !important;
        }
        .nav-list li a:hover::after {
            width: calc(100% - 24px);
        }

        .header-nav-wrap.fixed-nav .nav-list li a:hover {
            color: var(--primary);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px 4px;
            z-index: 20;
            background: transparent;
            border: none;
            outline: none;
        }

        .hamburger span {
            display: block;
            width: 28px;
            height: 3px;
            background: #fff;
            border-radius: 2px;
            transition: all var(--transition);
            transform-origin: center;
        }

        .header-nav-wrap.fixed-nav .hamburger span {
            background: #333;
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 6px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -6px);
        }

        /* ===== 视频区 ===== */
        .banner-video-box {
            width: 100%;
            height: 100vh;
            min-height: 480px;
            max-height: 970px;
            position: relative;
            overflow: hidden;
            background: #000;
        }

        .banner-video,
        .video-poster {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .banner-mask {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(to right, rgba(0, 0, 0, 0.65), rgba(0, 0, 0, 0.2));
            z-index: 2;
        }

        .banner-text {
            position: absolute;
            left: 50%;
            top: 50%;
            transform: translate(-50%, -50%);
            z-index: 3;
            color: #fff;
            text-align: center;
            width: 90%;
            max-width: 900px;
            padding: 0 16px;
            pointer-events: none;
        }

        .banner-text h1 {
            font-size: clamp(40px, 10vw, 100px);
            letter-spacing: clamp(4px, 1.5vw, 10px);
            font-weight: 900;
            margin-bottom: 0.2em;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }

        .banner-text .slogan {
            font-size: clamp(20px, 5vw, 68px);
            color: #003f98;
            text-shadow: 0 0 30px rgba(0, 63, 152, 0.4);
            font-weight: 700;
            letter-spacing: 2px;
        }

        .volume-btn {
            position: absolute;
            right: clamp(16px, 4vw, 50px);
            bottom: clamp(20px, 4vh, 40px);
            width: clamp(40px, 4vw, 46px);
            height: clamp(40px, 4vw, 46px);
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            z-index: 10;
            font-size: clamp(18px, 2vw, 24px);
            transition: all var(--transition);
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
        }

        .volume-btn:hover {
            background: rgba(255, 255, 255, 0.3);
        }

        /* ===== 产品板块 ===== */
        .product-section {
            display: flex;
            flex-wrap: wrap;
            width: 100%;
        }

        .product-item {
            flex: 1 1 280px;
            padding: clamp(40px, 6vh, 80px) clamp(20px, 3vw, 35px);
            text-align: center;
            background: var(--light-gray);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: space-between;
            min-height: clamp(500px, 70vh, 820px);
            position: relative;
            overflow: hidden;
            transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
            cursor: pointer;
            border-left: 1px solid #eee;
        }

        .product-item:first-child {
            border-left: none;
        }

        .product-item:hover {
            background: #fff;
            transform: translateY(-6px);
            box-shadow: 0 12px 40px rgba(70, 135, 240, 0.08);
            z-index: 10;
        }

        .product-item::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            width: 0;
            height: 3px;
            background: var(--primary);
            transform: translateX(-50%);
            transition: width 0.4s ease;
        }

        .product-item:hover::after {
            width: 100%;
        }

        .product-title {
            font-size: clamp(18px, 2.4vw, 30px);
            color: #555;
            position: relative;
            margin-bottom: 28px;
            transition: color var(--transition);
            line-height: 1.3;
        }

        .product-title::after {
            content: '';
            width: 55px;
            height: 2px;
            background: #888;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            bottom: -14px;
            transition: all var(--transition);
        }

        .product-item:hover .product-title {
            color: var(--primary);
        }
        .product-item:hover .product-title::after {
            width: 80px;
            background: var(--primary);
        }

        .product-desc {
            max-width: 700px;
            line-height: 1.75;
            font-size: clamp(14px, 1.1vw, 15px);
            margin-bottom: clamp(30px, 5vh, 55px);
            color: #777;
            transition: color var(--transition);
            flex: 1;
        }

        .product-item:hover .product-desc {
            color: #555;
        }

        .product-icon-btn {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            transition: all var(--transition);
            margin: 0 auto 20px;
        }

        .icon-border {
            border: 1px solid #999;
            color: #666;
            background: transparent;
        }

        .product-item:hover .icon-border {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }

        .product-img {
            max-width: 82%;
            transition: all 0.4s ease;
            filter: grayscale(30%);
            /* 确保图片完整显示，不被裁剪 */
            object-fit: contain;
            width: auto;
            height: auto;
        }

        .product-item:hover .product-img {
            filter: grayscale(0);
            transform: scale(1.04);
        }
.product-link{
    text-decoration: none;
    color: inherit;
    display: block;
}
        /* ===== 关于我们 ===== */
        .about-section {
            width: 100%;
            min-height: 950px;
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .about-bg {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            top: 0;
            left: 0;
        }

        .about-mask {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, rgba(0, 0, 0, 0.6) 0%, rgba(0, 0, 0, 0.25) 80%);
            z-index: 1;
        }

        .about-content {
            position: relative;
            z-index: 2;
            color: #fff;
            padding: clamp(60px, 10vh, 140px) clamp(20px, 5vw, 100px) clamp(40px, 6vh, 80px);
            max-width: 800px;
            opacity: 0;
            transform: translateX(-40px);
            transition: all 0.8s ease-out;
        }

        .about-content.animate-in {
            opacity: 1;
            transform: translateX(0);
        }

        .about-title-main {
            font-size: clamp(38px, 6vw, 90px);
            color: var(--primary);
            font-weight: 700;
            line-height: 1.1;
            margin-bottom: 12px;
        }

        .about-sub-wrap {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px 20px;
            margin-bottom: 28px;
        }

        .about-sub-title {
            font-size: clamp(16px, 1.4vw, 20px);
            color: #cce0ff;
        }

        .about-stock {
            background: var(--primary);
            color: #fff;
            padding: 4px 14px;
            font-size: clamp(16px, 1.2vw, 20px);
            letter-spacing: 1px;
            border-radius: 4px;
        }

        .about-line {
            width: 80px;
            height: 2px;
            background: var(--primary);
            margin-bottom: 30px;
        }

        .about-desc {
            font-size: clamp(15px, 1.1vw, 17px);
            line-height: 1.85;
            color: #f0f4fa;
            text-align: justify;
            text-indent: 2em;
        }

        .about-data-wrap {
            position: relative;
            z-index: 2;
            display: flex;
            flex-wrap: wrap;
            width: 100%;
            margin-top: auto;
            opacity: 0;
            transform: translateY(40px);
            transition: all 0.8s ease-out 0.2s;
        }

        .about-data-wrap.animate-in {
            opacity: 1;
            transform: translateY(0);
        }

        .data-item {
            flex: 1 1 160px;
            background: rgba(37, 88, 184, 0.92);
            text-align: center;
            padding: clamp(30px, 4vh, 50px) clamp(12px, 2vw, 20px);
            transition: all var(--transition);
            border-right: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(2px);
        }

        .data-item:last-child {
            border-right: none;
        }

        .data-item:hover {
            transform: translateY(-6px);
            background: rgba(29, 72, 153, 0.95);
        }

        .data-num {
            font-size: clamp(36px, 5vw, 72px);
            color: #fff;
            font-weight: 700;
            line-height: 1;
            margin-bottom: 10px;
            transition: transform var(--transition);
        }

        .data-item:hover .data-num {
            transform: scale(1.06);
        }

        .data-text {
            font-size: clamp(14px, 1vw, 16px);
            color: #e0e9fa;
            line-height: 1.5;
        }

        /* ===== 新闻资讯 ===== */
        .news-exhibition-section {
            width: 100%;
            padding: clamp(60px, 10vh, 120px) 0;
            opacity: 0;
            transform: translateY(40px);
            transition: all 0.8s ease-out;
            background: #fafcff;
        }

        .news-exhibition-section.animate-in {
            opacity: 1;
            transform: translateY(0);
        }

        .news-wrap {
            display: flex;
            flex-wrap: wrap;
            width: 100%;
            max-width: 1440px;
            margin: 0 auto;
            padding: 0 clamp(16px, 3vw, 40px);
        }

        .news-left {
            flex: 0 0 280px;
            padding-right: 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .news-right {
            flex: 1;
            overflow: hidden;
            padding-left: 0;
            position: relative;
        }

        .news-big-title {
            font-size: clamp(28px, 3.2vw, 52px);
            color: #444;
            line-height: 1.2;
            font-weight: 500;
            margin-bottom: 18px;
            letter-spacing: 1px;
        }

        .news-sub-text {
            font-size: clamp(18px, 1.4vw, 22px);
            color: #666;
            margin-bottom: 8px;
        }

        .news-desc-text {
            font-size: clamp(14px, 1vw, 15px);
            color: #999;
            margin-bottom: 28px;
            line-height: 1.7;
        }

        .btn-group {
            display: flex;
            gap: 8px;
            margin-bottom: 16px;
        }

        .btn-prev,
        .btn-next {
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: #fff;
            border: none;
            font-size: 18px;
            cursor: pointer;
            transition: background var(--transition);
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .btn-prev:hover,
        .btn-next:hover {
            background: var(--primary-dark);
        }

        .more-news-btn {
            width: 140px;
            height: 44px;
            border: 1px solid #666;
            background: transparent;
            font-size: 16px;
            cursor: pointer;
            transition: all var(--transition);
            border-radius: 4px;
            margin-top: 10px;
        }

        .more-news-btn:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* 轮播容器 - 使用flex布局实现滚动 */
        .carousel-container {
            display: flex;
            transition: transform 0.5s ease;
            width: 100%;
            overflow: visible;
        }

        .carousel-item {
            flex: 0 0 calc(33.333% - 16px);
            margin-right: 24px;
            cursor: pointer;
            transition: all var(--transition);
            background: #fff;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            display: flex;
            flex-direction: column;
            box-sizing: border-box;
        }

        .carousel-item:last-child {
            margin-right: 0;
        }

        .carousel-item:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 40px rgba(70, 135, 240, 0.12);
        }

        .carousel-date-box {
            width: clamp(70px, 6vw, 100px);
            height: clamp(70px, 6vw, 100px);
            background: var(--primary-dark);
            color: #fff;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            margin: 20px 0 0 20px;
            border-radius: 4px;
            transition: background var(--transition);
            flex-shrink: 0;
        }

        .carousel-item:hover .carousel-date-box {
            background: #1d4899;
        }

        .date-num {
            font-size: clamp(30px, 3vw, 46px);
            font-weight: 700;
            line-height: 1;
        }

        .date-month {
            font-size: clamp(12px, 0.9vw, 15px);
            margin-top: 4px;
        }

        .carousel-img {
            width: 100%;
            height: clamp(180px, 18vw, 220px);
            object-fit: cover;
            transition: transform var(--transition);
            order: -1;
        }

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

        .carousel-content {
            padding: 16px 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .carousel-title {
            font-size: clamp(15px, 1.05vw, 16px);
            color: #333;
            line-height: 1.6;
            margin-bottom: 10px;
            transition: color var(--transition);
            font-weight: 600;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .carousel-item:hover .carousel-title {
            color: var(--primary-dark);
        }

        .carousel-desc {
            font-size: clamp(13px, 0.85vw, 14px);
            color: #888;
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        /* ===== 全球布局 ===== */
        .global-layout-section {
            width: 100%;
            min-height: 100vh;
            background: url("../tgy/bj2.jpg") center/cover no-repeat fixed;
            position: relative;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            padding: clamp(50px, 8vh, 80px) clamp(20px, 5vw, 60px);
            gap: 40px;
            transition: all 0.8s ease-out;
        }

        .global-layout-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.45);
            z-index: 0;
        }

        .global-left,
        .global-right {
            position: relative;
            z-index: 1;
        }

        .global-left {
            flex: 1 1 400px;
            color: #fff;
        }

        .global-right {
            flex: 1 1 300px;
            min-height: 300px;
        }

        .global-title {
            font-size: clamp(32px, 4.5vw, 64px);
            color: var(--primary-light);
            line-height: 1.2;
            margin-bottom: 20px;
            font-weight: 500;
            border-bottom: 2px solid var(--primary-light);
            padding-bottom: 14px;
            display: inline-block;
        }

        .global-desc {
            font-size: clamp(15px, 1.1vw, 17px);
            line-height: 1.8;
            margin: 24px 0 32px;
            color: #cce5ff;
        }

        .client-tip {
            font-size: clamp(18px, 1.4vw, 20px);
            color: #fff;
            margin-bottom: 28px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .client-logo-wrap {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
            gap: clamp(16px, 2vw, 35px) clamp(12px, 1.5vw, 20px);
        }

        .logo-flip-box {
            width: 100%;
            aspect-ratio: 1 / 1;
            perspective: 1000px;
            cursor: pointer;
            max-width: 100px;
        }

        .logo-flip-inner {
            position: relative;
            width: 100%;
            height: 100%;
            transition: transform 0.6s;
            transform-style: preserve-3d;
        }

        .logo-flip-box:hover .logo-flip-inner {
            transform: rotateY(180deg);
        }

        .logo-front,
        .logo-back {
            position: absolute;
            width: 100%;
            height: 100%;
            backface-visibility: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius);
            background: rgba(255, 255, 255, 0.06);
        }

        .logo-front {
            transform: rotateY(0deg);
        }

        .logo-back {
            transform: rotateY(180deg);
            background: rgba(115, 184, 255, 0.15);
        }

        .client-logo {
            width: 80%;
            height: auto;
            max-height: 80%;
            object-fit: contain;
            filter: brightness(1.4) contrast(1.1);
        }

        /* ===== 联系我们 ===== */
        .contact-section {
            width: 100%;
            min-height: 80vh;
            position: relative;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: clamp(50px, 10vh, 80px) clamp(20px, 5vw, 60px);
            text-align: center;
            opacity: 0;
            transform: translateY(40px);
            transition: all 0.8s ease-out;
            background: url("../tgy/bj3.jpg") center/cover no-repeat;
            background-color: #e8edf5;
        }

        .contact-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(255, 255, 255, 0.75);
            z-index: 0;
        }

        .contact-section.animate-in {
            opacity: 1;
            transform: translateY(0);
        }

        .contact-section>* {
            position: relative;
            z-index: 1;
        }

        .contact-title {
            font-size: clamp(36px, 5vw, 60px);
            color: #1a2a4a;
            letter-spacing: 4px;
            margin-bottom: 16px;
            font-weight: 700;
        }

        .contact-line {
            width: 60px;
            height: 3px;
            background: var(--primary);
            margin-bottom: 40px;
            border-radius: 2px;
        }

        .contact-info-list {
            background: rgba(255, 255, 255, 0.7);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            padding: 32px 48px;
            border-radius: 12px;
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.3);
            margin-bottom: 16px;
        }

        .contact-info-list p {
            font-size: clamp(16px, 1.1vw, 18px);
            color: #2a3a5a;
            line-height: 2.4;
            font-weight: 500;
        }

        .contact-info-list p:last-child {
            color: var(--primary-dark);
            font-weight: 600;
        }

        .contact-more-btn {
            width: 140px;
            height: 46px;
            background: var(--primary);
            color: #fff;
            border: none;
            font-size: 16px;
            cursor: pointer;
            transition: all var(--transition);
            border-radius: 4px;
            margin-top: 16px;
            font-weight: 500;
            letter-spacing: 1px;
        }

        .contact-more-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(70, 135, 240, 0.3);
        }

        /* ===== 页脚 ===== */
        footer {
            width: 100%;
            background: var(--dark);
            color: #ccc;
            padding: clamp(40px, 8vh, 80px) clamp(20px, 4vw, 60px) 30px;
            position: relative;
        }

        .back-top-btn {
            width: clamp(48px, 5vw, 60px);
            height: clamp(48px, 5vw, 60px);
            border-radius: 50%;
            background: #444;
            color: #fff;
            font-size: clamp(20px, 2vw, 28px);
            display: flex;
            align-items: center;
            justify-content: center;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            top: -30px;
            cursor: pointer;
            transition: background var(--transition);
            border: none;
        }

        .back-top-btn:hover {
            background: var(--primary);
        }

        .footer-top-wrap {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: clamp(30px, 4vw, 60px);
            margin-bottom: 50px;
        }

        .footer-column h3 {
            font-size: clamp(18px, 1.3vw, 20px);
            color: #fff;
            font-weight: 400;
            margin-bottom: 20px;
            padding-left: 16px;
            position: relative;
        }

        .footer-column h3::before {
            content: "|";
            position: absolute;
            left: 0;
            color: #fff;
            font-size: 22px;
        }

        .footer-column ul li {
            margin-bottom: 12px;
        }

        .footer-column ul li a {
            color: #ccc;
            font-size: clamp(13px, 0.9vw, 14px);
            transition: color var(--transition);
        }

        .footer-column ul li a:hover {
            color: var(--primary-light);
        }

       .footer-qrcode-box {
    text-align: right;
    /* 开启弹性布局，垂直排列 */
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.footer-qrcode-title {
    font-size: clamp(16px, 1.2vw, 18px);
    color: #ccc;
    letter-spacing: 2px;
    margin-bottom: 16px;
    font-style: italic;
}

.footer-qrcode {
    width: clamp(140px, 15vw, 220px);
    height: auto;
    aspect-ratio: 1/1;
    border: 8px solid #fff;
    border-radius: 4px;
    max-width: 220px;
}

        .footer-copyright {
            border-top: 1px solid #333;
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: clamp(12px, 0.8vw, 14px);
            color: #888;
        }

       .copyright-left {
    display: flex;
    align-items: center; /* 所有元素垂直居中 */
    flex-wrap: nowrap; /* 强制不换行 */
    gap: 6px;
}
.copyright-left img {
    height: 20px;
}

        .copyright-right {
            flex-shrink: 0;
        }

        /* ============================================================ */
        /* ===== 响应式：平板 ===== */
        @media (max-width: 992px) {
            .global-layout-section {
                background-attachment: scroll;
            }

            .about-content {
                max-width: 100%;
            }

            .news-wrap {
                flex-direction: column;
            }

            .news-left {
                flex: 1 1 auto;
                padding-right: 0;
                padding-bottom: 30px;
            }

            .news-right {
                padding-left: 0;
            }

            .carousel-item {
                flex: 0 0 calc(50% - 12px);
                margin-right: 20px;
            }

            .carousel-date-box {
                margin: 16px 0 0 16px;
            }

            .carousel-content {
                padding: 12px 16px 20px;
            }

            .contact-section {
                min-height: 60vh;
            }

            .contact-info-list {
                padding: 24px 32px;
                width: 100%;
                max-width: 600px;
            }
        }

        /* ============================================================ */
        /* ===== 响应式：手机 - 核心修复 ===== */
        @media (max-width: 768px) {
            /* 导航 */
            .header-nav-wrap {
                min-height: var(--nav-height-mobile);
                padding: 0 16px;
                background: rgba(0, 0, 0, 0.3);
            }

            .header-nav-wrap.fixed-nav {
                background: #fff;
            }

            .nav-list {
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                height: 100vh;
                background: rgba(0, 0, 0, 0.92);
                flex-direction: column;
                justify-content: center;
                align-items: center;
                gap: 8px;
                transform: translateX(100%);
                transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                padding: 80px 20px 40px;
                backdrop-filter: blur(10px);
                -webkit-backdrop-filter: blur(10px);
            }

            .nav-list.open {
                transform: translateX(0);
            }

            .nav-list li a {
                color: #fff !important;
                font-size: 20px;
                padding: 12px 20px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                width: 100%;
                text-align: center;
            }

            .nav-list li a::after {
                display: none;
            }

            .nav-list li a:hover {
                color: var(--primary-light) !important;
            }

            .hamburger {
                display: flex;
            }

            .header-nav-wrap.fixed-nav .hamburger span {
                background: #333;
            }

            /* 视频 */
            .banner-video-box {
                height: 70vh;
                min-height: 400px;
                max-height: 700px;
            }

            .banner-text h1 {
                font-size: clamp(32px, 10vw, 48px);
            }
            .banner-text .slogan {
                font-size: clamp(18px, 5vw, 28px);
            }

            /* ===== 产品 - 移动端修复：图片完整显示 ===== */
            .product-section {
                flex-direction: column;
            }

            .product-item {
                min-height: auto;
                padding: 32px 20px 40px;
                border-left: none;
                border-bottom: 1px solid #eee;
                overflow: visible;
            }

            .product-item:hover {
                transform: translateY(0);
            }
            .product-item::after {
                display: none;
            }

            /* 产品图片在移动端完整显示 */
            .product-img {
                max-width: 100%;
                width: 100%;
                height: auto;
                object-fit: contain;
                filter: grayscale(30%);
                transform: none;
                margin-top: 12px;
            }

            .product-item:hover .product-img {
                filter: grayscale(0);
                transform: none;
            }

            .product-title {
                font-size: 20px;
                margin-bottom: 20px;
            }

            .product-desc {
                font-size: 14px;
                margin-bottom: 24px;
            }

            .product-icon-btn {
                width: 40px;
                height: 40px;
                font-size: 18px;
                margin-bottom: 8px;
            }

            /* 关于 */
            .about-section {
                min-height: auto;
            }
            .about-content {
                padding: 40px 20px 30px;
            }
            .about-title-main {
                font-size: clamp(30px, 8vw, 42px);
            }
            .about-sub-wrap {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .about-data-wrap {
                flex-wrap: wrap;
            }
            .data-item {
                flex: 1 1 50%;
                padding: 24px 12px;
                border-right: 1px solid rgba(255, 255, 255, 0.06);
            }
            .data-item:nth-child(even) {
                border-right: none;
            }
            .data-item:hover {
                transform: translateY(0);
            }
            .data-num {
                font-size: clamp(30px, 8vw, 42px);
            }

            /* ===== 新闻 - 移动端修复：图片高度增加 ===== */
            .carousel-container {
                display: flex;
                transition: transform 0.5s ease;
                width: auto;
                overflow: visible;
            }

            .carousel-item {
                flex: 0 0 100%;
                margin-right: 0;
                max-width: 100%;
                border-radius: 8px;
            }

            .carousel-item:last-child {
                margin-right: 0;
            }

            /* 新闻缩略图在手机上高度增加，显示更多内容 */
            /* ===== 新闻资讯区域整体 ===== */
    .news-right {
        width: 100%;
        padding: 0 10px;          /* 左右留边距，不贴边 */
        box-sizing: border-box;
        overflow: hidden;
    }

    /* ===== 卡片滚动容器 ===== */
    .carousel-container {
        display: flex;
        flex-wrap: nowrap;
        gap: 16px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;  /* iOS平滑滚动 */
        scroll-snap-type: x mandatory;
        padding: 4px 0 12px 0;
        /* 重置 transform（如有内联），由 JS 控制时需注意 */
        transform: translateX(0) !important;
    }

    /* ===== 每个新闻卡片 ===== */
    .carousel-item {
        /* 每屏显示约 0.8 个卡片，带滚动预览效果 */
        flex: 0 0 calc(80% - 16px) !important;
        /* 如果你想完整显示一整个卡片，改为 calc(100% - 16px) */
        min-width: 280px;
        max-width: 400px;
        scroll-snap-align: start;
        margin-right: 0 !important;   /* 覆盖内联 margin-right */
        box-sizing: border-box;
    }

    /* ===== 卡片图片 ===== */
    .carousel-img {
        width: 100%;
        height: auto;
        aspect-ratio: 16 / 9;        /* 保持宽高比，防止变形 */
        object-fit: cover;
        border-radius: 8px 8px 0 0;  /* 保持原样式，可自行调整 */
    }

    /* ===== 卡片文字内容 ===== */
    .carousel-content {
        padding: 12px 8px;
    }

    .carousel-content h4 {
        font-size: 15px;
        line-height: 1.5;
        margin: 0 0 6px 0;
        /* 标题最多显示两行，超出省略 */
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        word-break: break-word;
    }

    .carousel-content .carousel-desc {
        font-size: 13px;
        line-height: 1.6;
        color: #666;
        /* 描述最多显示三行，超出省略 */
        display: -webkit-box;
        -webkit-line-clamp: 3;
        -webkit-box-orient: vertical;
        overflow: hidden;
        word-break: break-word;
    }

    /* ===== 左右切换按钮 ===== */
    .btn-prev,
    .btn-next {
        width: 36px;
        height: 36px;
        font-size: 18px;
        line-height: 36px;
        text-align: center;
        border-radius: 50%;
        background: rgba(0, 0, 0, 0.5);
        color: #fff;
        border: none;
        cursor: pointer;
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        z-index: 2;
        /* 根据你的布局调整 left/right，此处仅为示例 */
    }
    .btn-prev {
        left: 6px;
    }
    .btn-next {
        right: 6px;
    }

    /* 如果按钮在容器外部，可调整父级定位，但暂不处理 */
    /* 也可在手机端隐藏按钮，让用户纯滑动 */
    /* 如需隐藏，取消下面注释 */
    /*
    .btn-prev,
    .btn-next {
        display: none;
    }
    */

    /* ===== （可选）调整卡片阴影、圆角等细节 ===== */
    .carousel-item {
        border-radius: 10px;
        box-shadow: 0 2px 8px rgba(0,0,0,0.08);
        background: #fff;
    }

    /* ===== 如果新闻资讯上方有标题“新闻资讯”，也可微调 ===== */
    .news-title {
        font-size: 20px;
        margin-bottom: 10px;
    }

            /* 全球 */
            .global-layout-section {
                min-height: auto;
                padding: 40px 20px;
                background-attachment: scroll;
            }
            .global-left {
                flex: 1 1 100%;
            }
            .global-right {
                flex: 1 1 100%;
                min-height: 200px;
                background-size: contain;
            }
            .global-title {
                font-size: clamp(28px, 7vw, 38px);
            }
            .client-logo-wrap {
                grid-template-columns: repeat(4, 1fr);
                gap: 16px;
            }
            .logo-flip-box {
                max-width: 80px;
                margin: 0 auto;
            }
            .client-logo {
                width: 70%;
            }

            /* 联系 */
            .contact-section {
                min-height: 60vh;
                padding: 40px 20px;
            }
            .contact-title {
                font-size: 32px;
            }
            .contact-info-list {
                padding: 20px 24px;
                width: 100%;
                max-width: 100%;
            }
            .contact-info-list p {
                font-size: 15px;
                line-height: 2.2;
            }

            /* 页脚 */
            footer {
                padding: 40px 16px 20px;
            }
            .footer-top-wrap {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
                margin-bottom: 30px;
            }
            .footer-qrcode-box {
                text-align: left;
                grid-column: 1 / -1;
            }
            .footer-qrcode {
                width: 140px;
                border-width: 6px;
            }
            .footer-copyright {
                 flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 8px;
        padding: 12px 8px;
        font-size: 12px;
            }
            .copyright-left {
                display: flex;
        flex-wrap: wrap;
        justify-content: center;
        align-items: center;
        gap: 4px 6px;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
            }
             /* 所有文字、链接允许换行，去除强制不换行 */
    .copyright-left span,
    .copyright-left a,
    .copyright-left text {
        white-space: normal !important;
        word-break: break-word;
    }

    /* 安全图标限制尺寸，防止溢出 */
    .copyright-left .safe-icon {
        max-height: 18px;
        width: auto;
        display: inline-block;
    }

    /* 技术支持也居中，自动换行 */
    .copyright-right {
        text-align: center;
        width: 100%;
        word-break: break-word;
    }
            .back-top-btn {
                width: 48px;
                height: 48px;
                font-size: 20px;
                top: -24px;
            }
        }

        /* ============================================================ */
        /* ===== 超小屏手机 ===== */
        @media (max-width: 420px) {
            .banner-video-box {
                height: 60vh;
                min-height: 320px;
            }
            .banner-text h1 {
                font-size: 28px;
            }
            .banner-text .slogan {
                font-size: 16px;
            }

            /* 产品图片在超小屏上保持完整 */
            .product-img {
                max-width: 100%;
                width: 100%;
                height: auto;
                object-fit: contain;
            }

            /* 新闻图片在超小屏上保持合适高度 */
            .carousel-img {
                height: clamp(180px, 35vw, 260px);
            }

            .client-logo-wrap {
                grid-template-columns: repeat(3, 1fr);
                gap: 12px;
            }
            .logo-flip-box {
                max-width: 64px;
            }

            .footer-top-wrap {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-qrcode-box {
                text-align: center;
            }
            .footer-qrcode {
                width: 120px;
            }

            .data-item {
                flex: 1 1 100%;
                border-right: none !important;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }
            .data-item:last-child {
                border-bottom: none;
            }

            .product-title {
                font-size: 18px;
            }
            .about-title-main {
                font-size: 28px;
            }
            .contact-title {
                font-size: 28px;
            }
            .contact-info-list {
                padding: 16px;
            }
        }

        /* ============================================================ */
        /* ===== 大屏优化 ===== */
        @media (min-width: 1400px) {
            .product-item {
                min-height: 820px;
            }
            .about-content {
                max-width: 60%;
                padding-left: 8%;
            }
            .banner-text h1 {
                font-size: 100px;
            }
            .banner-text .slogan {
                font-size: 68px;
            }
            .carousel-item {
                flex: 0 0 calc(33.333% - 16px);
                margin-right: 24px;
            }
        }

        /* ===== 滚动条美化 ===== */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: #f0f0f0;
        }
        ::-webkit-scrollbar-thumb {
            background: var(--primary);
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary-dark);
        }