body{
            color: #4D4D4D;
        }
        .case-banner{
            background: #fff;
            padding: 60px;
        }
        /* 标题区域 */
        .case-title{
            font-size:36px;
            padding: 0 0 24px;
            color: #000; /* 标题颜色 */
            font-weight: bold;
            border-bottom:1px solid #ddd;
        }
        .case-tags{
            display:flex;
            gap:10px;
            margin-bottom:34px;
            padding-bottom:20px;
            border-bottom:1px solid #ddd;
        }
        .case-tag{
            background:#eee;
            padding:3px 10px;
            color: #4D4D4D; /* 内容颜色 */
        }



        /* ========== 大图+缩略图 整体容器（视觉一体块） ========== */
        .stack {
            display: flex;
            height: 436px;
            gap: 40px;
            overflow: hidden;
            margin: 40px 0;
        }

        .stack-item {
            flex: 1 1 0;
            height: 100%;
            overflow: hidden;
            cursor: pointer;
            transition: flex 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            position: relative;
            background: #2a2a3e;
            min-width: 0;
        }

        .stack-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            transition: filter 0.3s ease;
            /* ===== 禁止拖拽 ===== */
            pointer-events: none;
            -webkit-user-drag: none;
            user-drag: none;
            -webkit-user-select: none;
            user-select: none;
            -webkit-touch-callout: none;
        }

        /* 折叠状态：变暗 */
        .stack-item:not(.active) img {
            filter: brightness(0.5) saturate(0.6);
        }

        .stack-item:not(.active):hover img {
            filter: brightness(0.7) saturate(0.8);
        }

        /* ===== 展开 ===== */
        .stack-item.active {
            flex: 3 1 0;
            cursor: default;
        }

        .stack-item.active img {
            filter: brightness(1) saturate(1);
        }
        
        /* 图片下方描述文字 */
        .img-desc{
            margin:0 0 34px 0;
            color: #4D4D4D; /* 内容颜色 */
        }

        /* 三列信息栏 */
        .info-row{
            display:grid;
            grid-template-columns: repeat(2, 1fr);
            gap:60px;
        }
        .info-item{
            height: 60px;
            display: flex;
            justify-content: center;
            align-items: center;
            background: #F7F7F7;
            padding: 0 20px;
        }
        .info-label{
            color: #000;
            font-weight: 700;
            margin: 0 5px 0 0;
        }


        /* 正文区块通用样式 */
        .section-box{
            line-height: 1.6;
        }
        .section-box h1,.section-box h2,.section-box h3{
            font-size:24px;
            margin:34px 0 14px;
            color: #000;
            font-weight: bold;
        }
        .section-box p{
            margin-bottom:14px;
            color: #4D4D4D;
        }
        .section-box ul,.section-box ol{
            padding-left:20px;
            color: #4D4D4D;
        }
        .section-box li{
            margin-bottom:8px;
            color: #4D4D4D;
            list-style: disc;
        }

        .section-box-h2{
            font-size:32px !important;
        }
        .section-box-h2:nth-child(1){
            margin:0 0 14px 0 !important;
        }

        .case-body{
            display: grid;
            grid-template-columns: 1fr 360px;
            gap: 34px;
            margin: 34px auto 0 auto;
            align-items: start;
        }
        .case-body-le{
            background: #fff;
            padding: 60px;
        }
        .tabfy-nav{
            flex-direction: column !important;
            gap: 14px;
            margin: 60px 0 0 0;
        }
        .tabfy-nav-item{
            width: 100% !important;
        }
        .right-case{
            background: #fff;
            padding: 34px 24px;
            position: sticky;
            top: 100px;
        }
        .right-case h3{
            font-size: 24px;
            border-bottom: 1px solid #E0E0E0;
            padding: 0 0 14px 0;
            margin: 0 0 24px 0;
            color: #000;
            font-weight: bold;
        }
        .right-case-box{
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .right-case-box h4{
            margin-top: 14px;
            color: #000;
            font-weight: bold;
        }
        .right-case-img {
          width: 100%;
          overflow: hidden;
          display: flex;
          justify-content: center;
        }

        .right-case-img img{
          height: 190px;
          max-width: max-content;
          display: block;
          transition: all 0.3s ease;
        }

        .right-case-slide:hover .right-case-img img{
          transform: scale(1.05);
        }

        /* ========== 新增移动端响应式（不改动PC原有样式） ========== */
        @media (max-width: 991px) {
            .case-banner {
                padding: 30px 15px;
            }
            .case-title {
                font-size: 26px;
                padding-bottom: 16px;
            }
            .stack {
                flex-direction: column;
                height: auto;
                gap: 16px;
                margin: 24px 0;
            }
            .stack-item {
                height: 240px;
                flex: none !important;
            }
            .info-row {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .info-item {
                height: auto;
                padding: 12px 15px;
                flex-wrap: wrap;
                justify-content: flex-start;
            }
            .case-body {
                grid-template-columns: 1fr;
            }
            .case-body-le {
                padding: 30px 15px;
            }
            .right-case {
                position: static;
                margin-top: 30px;
                padding: 24px 15px;
                display: none;
            }
            .right-case-img img {
                height: auto;
                width: 100%;
            }
            .quote-buttons {
                flex-direction: column;
                gap: 12px;
            }
            .quote-btn-red,
            .quote-btn-black {
                width: 100%;
            }
        }
        @media (max-width: 768px) {
            .wrap-1920 {
                margin: 10px;
            }
            .case-title {
                font-size: 22px;
            }
            .section-box-h2 {
                font-size: 24px !important;
            }
            .section-box h1,
            .section-box h2,
            .section-box h3 {
                font-size: 20px;
                margin: 24px 0 10px;
            }
            .stack-item {
                height: 180px;
            }
            .case-tags {
                flex-wrap: wrap;
            }
        }