/**************************************************
  * 全局 Reset
  **************************************************/
*{margin:0;padding:0;box-sizing:border-box;}
body{}
a{text-decoration:none;color:inherit;}

/**************************************************
 * PC 主导航栏（Logo + 一级导航 + 联系我们）
 **************************************************/
.nav-wrapper{
    width:100%;
    height:70px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:0 40px;
    background:#fff;
    border-bottom:1px solid #eee;

    position:fixed;
    top:0;
    left:0;
    right:0;
    z-index:1000;
}

.nav-left{display:flex;align-items:center;}
.logo-pc{margin-right:30px;height:25px;width:auto;}

.menu{
    display:flex;
    align-items:center;
    gap:30px;
    height:70px;
    font-size:16px;
}
@media (max-width: 1570px){
    .menu{
        font-size:13px;
    }
}
.menu-item{
    position:relative;
    height:70px;
    display:flex;
    align-items:center;
}
.menu-item a{color:#000;text-decoration:none;}

/* hover/active */
.menu-item:hover{border-bottom:2px solid #d7000f;}
.menu-item:hover a{color:#d7000f;}
.menu-item.active{border-bottom:2px solid #d7000f;}
.menu-item.active a{color:#d7000f;}

/**************************************************
 * PC 导航栏右侧
 **************************************************/
.nav-right{
    display:flex;
    align-items:center;
    gap:30px;
    font-size:15px;
    flex-shrink:0;
}

.icon-btn{cursor:pointer;font-size:18px;}

/* Contact */
.contact-btn{
    padding:6px 22px;
    border:1px solid #000;
    border-radius:6px;
    cursor:pointer;
    font-size:15px;
    transition:all .25s ease;
    color:#000;
    background:#fff;
}
.contact-btn:hover{
    background:#d7000f;
    color:#fff;
    border-color:#d7000f;
}

/* Download hover */
.nav-right .download-btn{cursor:pointer;color:#000;transition:color .25s ease;}
.nav-right .download-btn:hover{color:#d7000f;}

/* Language btn */
.lang-btn{
    display:flex;
    align-items:center;
    gap:6px;
    cursor:pointer;
    font-size:14px;
    flex-shrink:0;
}
.lang-btn:hover{color:#d7000f;}

/* ✅ 左侧图片卡片可点击状态 */
.series-card.is-link{cursor:pointer;}
.series-card.is-link:hover{transform:translateY(-2px);transition:transform 160ms ease;}
.mega-product-item.is-link,.mega-all.is-link{cursor:pointer;}
.mega-product-item.is-link:hover{transform:translateY(-2px);transition:transform 160ms ease;}

/**************************************************
 * 移动端导航栏（顶部固定）
 **************************************************/
.mobile-bar{
    display:none;
    width:100%;
    height:60px;
    align-items:center;
    justify-content:space-between;
    padding:0 25px;
    border-bottom:1px solid #eee;
    background:#fff;
    position:fixed;
    top:0;left:0;
    z-index:1000;
}

.logo-mobile{width:130px;height:auto;}

.mobile-icons{
    display:flex;
    align-items:center;
    gap:25px;
    font-size:20px;
}
.mobile-icons i{
    cursor:pointer;
    -webkit-tap-highlight-color:transparent;
}

/**************************************************
 * ✅ Mobile 蒙层（打开菜单/二级页时）
 **************************************************/
.mobile-mask{
    position:fixed;
    inset:0;
    background:rgba(0,0,0,.35);
    opacity:0;
    pointer-events:none;
    transition:opacity .22s ease;
    z-index:998;
}
.mobile-mask.show{
    opacity:1;
    pointer-events:auto;
}

/**************************************************
 * 移动端抽屉菜单（更好看：阴影 + 大点击区 + Chevron）
 **************************************************/
.mobile-menu{
    position:fixed;
    top:60px;
    left:0;
    width:100%;
    height:calc(100vh - 60px);
    background:#fff;
    transform:translateX(100%);
    transition:.32s cubic-bezier(.2,.8,.2,1);
    overflow-y:auto;
    z-index:999;
    box-shadow:-12px 0 28px rgba(0,0,0,.12);
    padding-bottom:env(safe-area-inset-bottom);
}
.mobile-menu.open{transform:translateX(0%);}

.mobile-menu a{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:18px 25px;
    border-bottom:1px solid #f0f0f0;
    color:#000;
    font-size:16px;
    text-decoration:none;
    -webkit-tap-highlight-color:transparent;
}

/* 有二级的项：右侧 chevron */
.mobile-menu a.has-sub::after{
    content:"\f054";
    font-family: "Font Awesome 7 Free", serif;
    font-weight:900;
    font-size:14px;
    color:rgba(0,0,0,.35);
}

/* 点击反馈 */
.mobile-menu a:active{
    background:#fafafa;
}

.mobile-contact{
    width:90%;
    padding:12px 0;
    text-align:center;
    border:1px solid #000;
    border-radius:10px;
    margin:26px auto 40px;
    cursor:pointer;
    font-size:16px;
    transition:all .2s ease;
    -webkit-tap-highlight-color:transparent;
}
.mobile-contact:active{
    transform:scale(.99);
}
.mobile-contact:hover{
    background:#d7000f;
    color:#fff;
    border-color:#d7000f;
}

/**************************************************
 * PC MegaMenu（基础）
 **************************************************/
.pc-mega-menu{
    background:rgba(255,255,255);
    backdrop-filter:blur(6px);

    width:100%;
    border-top:1px solid #eee;
    box-shadow:0 4px 20px rgba(0,0,0,.08);
    position:fixed;
    left:0;
    top:var(--mega-top);
    padding:40px 280px;
    z-index:999;

    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    pointer-events:none;
    align-items:center;
    transition:opacity .18s ease, transform .18s ease, visibility .18s ease;
}
.pc-mega-menu.show{
    opacity:1;
    visibility:visible;
    transform:translateY(0);
    pointer-events:auto;
}

/**************************************************
 * ✅ Robot / Brush / WFP / RO / Pump 新 MegaMenu（PC）
 **************************************************/
.pc-mega-menu-series{
    padding:40px 280px;
    border-top:1px solid #eee;
    background:#fff;
}

.pc-mega-menu-series .series-inner{
    width:1200px;
    max-width:100%;
    margin:0;
}

.series-tabs{
    display:flex;
    gap:14px;
    align-items:center;
    flex-wrap:wrap;
    margin:0 0 18px;
}
.series-tab{
    appearance:none;
    border:0;
    background:rgba(255,255,255,.75);
    border:1px solid rgba(0,0,0,.06);
    border-radius:8px;
    padding:9px 14px;
    font-size:14px;
    font-weight:500;
    color:rgba(0,0,0,.6);
    cursor:pointer;
    transition:all .18s ease;
}
.series-tab:hover{
    background:#fff;
    color:rgba(0,0,0,.85);
}
.series-tab.active{
    color:#d7000f;
    background:#fff;
    border-color:rgba(215,0,15,.22);
    box-shadow:0 6px 18px rgba(0,0,0,.06);
}

.series-content{position:relative;}
.series-panel{
    display:none;
    opacity:0;
    transform:translateY(6px);
    transition:opacity 180ms ease, transform 180ms ease;
}
.series-panel.active{
    display:block;
    opacity:1;
    transform:translateY(0);
}
.series-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:22px;
}
.series-card{
    position:relative;
    border-radius:14px;
    overflow:hidden;
    background:#e9eef5;
    box-shadow:0 10px 26px rgba(0,0,0,.12);
    aspect-ratio:16/9;
}
.series-media,.video-poster,.series-card video{
    width:100%;
    height:100%;
    object-fit:cover;
    display:block;
}
.series-caption{
    position:absolute;
    left:0;right:0;bottom:0;
    padding:14px 16px;
    font-size:14px;
    font-weight:600;
    color:rgba(255,255,255,.95);
    background:linear-gradient(to top, rgba(0,0,0,.55), rgba(0,0,0,0));
}
.video-lazy{position:relative;width:100%;height:100%;}
.video-play{
    position:absolute;
    left:50%;top:50%;
    transform:translate(-50%,-50%);
    width:66px;height:66px;
    border-radius:999px;
    border:0;
    cursor:pointer;
    background:rgba(255,255,255,.85);
    box-shadow:0 10px 22px rgba(0,0,0,.18);
    display:grid;
    place-items:center;
}
.video-play i{color:#d7000f;font-size:20px;margin-left:2px;}
.video-play:hover{background:rgba(255,255,255,.95);}

/**************************************************
 * ✅ Fullscreen Video Modal（PC）
 **************************************************/
body.video-modal-open{overflow:hidden;}
.video-modal{
    position:fixed;inset:0;
    z-index:5000;
    opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity 180ms ease, visibility 180ms ease;
}
.video-modal.show{opacity:1;visibility:visible;pointer-events:auto;}
.video-modal-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.78);}
.video-modal-shell{
    position:absolute;inset:0;
    display:flex;align-items:center;justify-content:center;
    padding:24px;
}
.video-modal-close{
    position:absolute;top:18px;right:18px;
    width:44px;height:44px;border-radius:999px;
    border:0;cursor:pointer;
    background:rgba(255,255,255,.12);
    color:#fff;display:grid;place-items:center;
    transition:background 180ms ease;
}
.video-modal-close:hover{background:rgba(255,255,255,.2);}
.video-modal-stage{
    width:min(1280px, 92vw);
    aspect-ratio:16/9;
    position:relative;
    border-radius:16px;
    overflow:hidden;
    background:#000;
    box-shadow:0 20px 60px rgba(0,0,0,.45);
}
.video-modal-player{width:100%;height:100%;display:block;background:#000;}
.video-modal-loading{
    position:absolute;inset:0;
    display:none;
    align-items:center;justify-content:center;
    flex-direction:column;
    gap:12px;
    background:rgba(0,0,0,.35);
}
.video-modal-loading.show{display:flex;}
.video-modal-spinner{
    width:44px;height:44px;border-radius:999px;
    border:3px solid rgba(255,255,255,.25);
    border-top-color:rgba(255,255,255,.95);
    animation:videoModalSpin .9s linear infinite;
}
.video-modal-loading-text{
    color:rgba(255,255,255,.92);
    font-size:14px;font-weight:600;letter-spacing:.2px;
}
@keyframes videoModalSpin{to{transform:rotate(360deg);}}
.video-modal.is-loading .video-modal-player{opacity:0;visibility:hidden;pointer-events:none;}
.video-modal.is-loading .video-modal-loading{display:flex;}

/**************************************************
 * Products MegaMenu（原样）
 **************************************************/
.mega-inner{display:flex;flex-direction:column;width:1200px;}
.mega-title{font-size:16px;font-weight:400;color:rgb(25,25,25);margin-bottom:20px;cursor:pointer;}
.mega-title a{color:#000;}
.mega-all{font-size:12px;font-weight:400;color:rgba(0,0,0,.6);cursor:pointer;margin-bottom:25px;}
.mega-main{margin-top:2.1875rem;display:flex;}
.mega-left{width:60%;}
.mega-products{
    margin-top:1.5625rem;
    display:flex;
    flex-wrap:wrap;
    gap:2rem;
}
.mega-product-item{width:45%;display:flex;gap:16px;align-items:center;}
.mega-product-item img{width:84px;height:84px;background:#fff;object-fit:contain;}
.mega-pinfo{width:calc(100% - 88px)!important;text-align:left;margin-left:8px;flex-shrink:1;}
.mega-pname{
    color:#000;
    font-weight:400;
    font-size:14px;
    white-space:nowrap;
    overflow:hidden;
    text-overflow:ellipsis;
    margin-bottom:5px;
}
.mega-pmodel{
    font-size:14px;
    font-weight:400;
    color:rgba(0,0,0,.6);
    overflow:hidden;
    white-space:nowrap;
    text-overflow:ellipsis;
}
.mega-line{width:1px;background:#eee;margin:0 40px;}
.mega-right{margin-top:1.3125rem;display:flex;gap:30px;}
.mega-column h4{font-size:12px;font-weight:400;color:rgba(0,0,0,.6);margin-bottom:15px;}
.mega-column a{
    display:block;
    font-weight:400;
    margin-bottom:1rem;
    font-size:13px;
    text-decoration:none;
    color:#000;
    transition:color .2s ease;
}
.mega-column a:hover{color:#d7000f;}

/**************************************************
 * 简版 MegaMenu
 **************************************************/
.mega-menu-simple .simple-inner{display:flex;width:100%;}
.simple-right{display:flex;gap:120px;width:100%;}
.simple-column h4{margin-bottom:15px;font-size:18px;font-weight:700;}
.simple-column a{display:block;margin-bottom:12px;font-size:14px;text-decoration:none;color:#000;}
.simple-column a:hover{color:#d7000f;}

/**************************************************
 * ✅ 移动端二级导航（更精致：header sticky + 卡片化）
 **************************************************/
.mobile-sub{
    position:fixed;
    top:60px;
    left:100%;
    width:100%;
    height:calc(100vh - 60px);
    background:#fff;
    z-index:9999;
    transition:.32s cubic-bezier(.2,.8,.2,1);
    overflow-y:auto;
    padding-bottom:env(safe-area-inset-bottom);
}
.mobile-sub.show{left:0;}

.sub-header{
    position:sticky;
    top:0;
    z-index:2;
    display:flex;
    align-items:center;
    gap:10px;
    padding:16px 18px;
    border-bottom:1px solid #eee;
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(10px);
}
.sub-header i{
    width:38px;height:38px;
    display:grid;place-items:center;
    border-radius:10px;
    background:#f5f6f8;
    cursor:pointer;
    -webkit-tap-highlight-color:transparent;
}
.sub-header span{font-weight:600;}

.sub-title{
    font-size:18px;
    font-weight:800;
    padding:16px 18px 8px;
}
.sub-all{
    margin:0 18px 12px;
    padding:12px 14px;
    border-radius:12px;
    background:#fafafa;
    color:rgba(0,0,0,.72);
    display:flex;
    align-items:center;
    justify-content:space-between;
    border:1px solid #f0f0f0;
    -webkit-tap-highlight-color:transparent;
}
.sub-all:active{transform:scale(.995);}

.sub-products{padding:0 18px;}
.sub-product-item{
    display:flex;
    gap:12px;
    padding:12px;
    border:1px solid #f0f0f0;
    border-radius:14px;
    margin-bottom:12px;
    align-items:center;
    background:#fff;
    -webkit-tap-highlight-color:transparent;
}
.sub-product-item:active{background:#fafafa;}
.sub-product-item img{
    width:64px;height:64px;
    border-radius:12px;
    background:#f6f7f9;
    object-fit:contain;
}
.sub-pname{font-size:14px;font-weight:700;margin-bottom:4px;}
.sub-pmodel{font-size:12px;color:rgba(0,0,0,.6);}

.sub-list{padding:10px 18px 22px;}
.sub-list h4{
    margin:14px 0 10px;
    font-size:12px;
    color:rgba(0,0,0,.55);
    font-weight:700;
    text-transform:uppercase;
    letter-spacing:.3px;
}
.sub-list a{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:14px 2px;
    border-bottom:1px solid #f0f0f0;
    text-decoration:none;
    color:#000;
    -webkit-tap-highlight-color:transparent;
}
.sub-list a::after{
    content:"\f054";
    font-family: "Font Awesome 7 Free", serif;
    font-weight:900;
    font-size:12px;
    color:rgba(0,0,0,.25);
}
.sub-list a:active{background:#fafafa;}

/**************************************************
 * 模糊层（PC hover 二级导航时）
 **************************************************/
.blur-layer{
    position:fixed;
    top:var(--mega-top);
    left:0;
    width:100%;
    height:calc(100vh - var(--mega-top));
    backdrop-filter:blur(10px);
    background:rgba(255,255,255,.6);
    opacity:0;
    pointer-events:none;
    transition:opacity 150ms ease;
    z-index:998;
}
.blur-layer.show{opacity:1;pointer-events:auto;}

/**************************************************
 * 语言层 overlay
 **************************************************/
.lang-overlay{
    left:0;
    width:100%;
    background:#fff;
    overflow-y:auto;
    z-index:99999;
    opacity:0;
    pointer-events:none;
    transform:translateY(-20px);
    transition:all .25s ease;
    padding:40px 280px;
    position:fixed;
    top:var(--nav-bottom);
    height:calc(100vh - var(--nav-bottom));
}
.lang-overlay.show{
    opacity:1;
    pointer-events:auto;
    transform:translateY(0);
}
.lang-header{
    display:flex;
    justify-content:space-between;
    align-items:center;
    margin-bottom:40px;
    font-size:18px;
    font-weight:600;
}
.lang-header i{font-size:26px;cursor:pointer;}
.lang-content{
    display:grid;
    grid-template-columns:repeat(auto-fill, minmax(260px, 1fr));
    column-gap:60px;
}
.lang-group-title{grid-column:1 / -1;margin-top:40px;margin-bottom:15px;}
.lang-item{font-size:14px;margin-bottom:12px;cursor:pointer;transition:color .2s;}
.lang-item:hover{color:#d7000f;}
.lang-item.is-available{color:#000;}
.lang-item.is-unavailable{color:#9a9a9a;cursor:default;}
.lang-item.is-unavailable:hover{color:#9a9a9a;}

/**************************************************
* 响应式：≤1366 切移动端
**************************************************/
.mobile-bar{display:none;}

@media (max-width: 1366px){
    .top-bar,.nav-wrapper,.pc-mega-menu,.blur-layer{display:none!important;}
    .mobile-bar{display:flex;}

    .lang-overlay{
        top:60px;
        height:calc(100vh - 60px);
        padding:30px 40px;
    }

    /* 触控增强（你原来的那套我保留，但更统一） */
    .mobile-bar{height:78px!important;padding:0 28px!important;}
    .logo-mobile{width:180px!important;}
    .mobile-icons i{font-size:26px!important;padding:12px!important;margin-left:4px;}
    .mobile-menu{top:78px;height:calc(100vh - 78px);}
    .mobile-sub{top:78px;height:calc(100vh - 78px);}
}

@media (max-width: 768px){
    .logo-mobile{width:120px!important;}
    .mobile-icons{gap:16px;font-size:18px;}
    .lang-overlay{padding:24px 20px;}
}