header {
    position: fixed; top: 0; width: 100%; height: 80px; 
    background: rgba(249, 249, 251, 0.95); backdrop-filter: blur(10px);
    display: flex; justify-content: space-between; align-items: center;
    padding: 0 60px; z-index: 1000; border-bottom: 1px solid rgba(0,0,0,0.05);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}
header.nav-up { transform: translateY(-100%); }

.logo img { height: 28px; width: auto; }
.nav-menu { display: flex; gap: 40px; height: 100%; align-items: center; }
.nav-item { position: static; height: 100%; display: flex; align-items: center; cursor: pointer; font-size: 16px; font-weight: 600; text-transform: uppercase; }
.nav-item:hover { color: var(--vi-blue); }
.nav-item.cur { color: var(--vi-blue); }

/* 下拉巨型菜单 Mega Menu */
.mega-menu { 
    position: absolute; top: 80px; left: 0; width: 100vw; 
    height: 750px; 
    background: #fff; box-shadow: 0 10px 30px rgba(0,0,0,0.05); 
    opacity: 0; visibility: hidden; transition: 0.3s; 
    padding: 50px 0; 
    display: flex; flex-direction: column; align-items: center;
    cursor: default; text-transform: none; border-top: 1px solid #eee;
}
.nav-item:hover .mega-menu { opacity: 1; visibility: visible; }

.mega-categories { 
    display: flex; gap: 40px; margin-bottom: 40px; 
    width: 100%; max-width: 1600px; padding: 0 40px; justify-content: center; 
}
.mega-cat-item { font-size: 17px; font-weight: 500; color: var(--text-gray); cursor: pointer; transition: 0.3s; line-height: 1;}
.mega-cat-item:hover, .mega-cat-item.active { color: var(--vi-blue); }

.mega-products { 
    display: grid; grid-template-columns: repeat(6, 1fr); gap: 30px; 
    width: 100%; max-width: 1600px; padding: 0 40px; 
}
.mega-product-card { display: flex; flex-direction: column; align-items: center; cursor: pointer; text-align: center; }
.mega-product-card img { 
    width: 240px; height: 240px; object-fit: contain; 
    background: var(--bg-light); margin-bottom: 20px; 
    border-radius: var(--radius-sm); transition: 0.3s; padding: 20px;
}
.mega-product-card:hover img { transform: scale(1.05); }
.mega-product-card p { font-size: 16px; font-weight: 500; color: var(--text-dark); transition: 0.3s; line-height: 1;}
.mega-product-card:hover p { color: var(--vi-blue); }

/* SUPPORT 专属下拉菜单样式 */
.mega-support {
    height: auto; padding: 50px 0 60px 0; 
    border-bottom-left-radius: 12px; border-bottom-right-radius: 12px; 
}
.support-dropdown-grid {
    display: flex; gap: 120px; justify-content: center;
    width: 100%; max-width: 1200px; margin: 0 auto;
}
.support-col { display: flex; flex-direction: column; text-align: left; }
.support-col h4 {
    font-size: 18px; font-weight: 800; color: var(--text-dark);
    margin-bottom: 25px; text-transform: uppercase; letter-spacing: 0.5px;
}
.support-col h4 a { color: var(--text-dark); text-decoration: none; display: inline-block; font-weight: inherit; transition: 0.3s; }
.support-col h4 a:hover { color: var(--vi-blue); }
.support-col ul { padding: 0; list-style: none; margin: 0; }
.support-col li { margin-bottom: 18px; }
.support-col ul a { font-size: 15px; color: var(--text-gray); transition: 0.3s; font-weight: 500; }
.support-col ul a:hover { color: var(--vi-blue); }

.header-tools { display: flex; align-items: center; gap: 30px; font-weight: 600;}
.icon-btn { font-size: 18px; cursor: pointer; transition: 0.3s;}
.icon-btn:hover { color: var(--vi-blue); }

/* 汉堡菜单按钮（默认隐藏） */
.nav-toggle-input { display: none; }
.hamburger {
    display: none;
    width: 0.273rem; height: 0.212rem;
    position: relative; cursor: pointer; z-index: 1001;
    flex-shrink: 0;
}
.hamburger span {
    display: block; position: absolute; height: 2px; width: 100%;
    background: var(--text-dark); border-radius: 2px;
    transition: 0.3s; left: 0;
}
.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.hamburger span:nth-child(3) { bottom: 0; }
.nav-toggle-input:checked ~ .hamburger span:nth-child(1) {
    top: 50%; transform: translateY(-50%) rotate(45deg);
}
.nav-toggle-input:checked ~ .hamburger span:nth-child(2) { opacity: 0; }
.nav-toggle-input:checked ~ .hamburger span:nth-child(3) {
    bottom: 50%; transform: translateY(50%) rotate(-45deg);
}

@media (max-width: 1366px) {
    header{padding: 0 30px;}
}
@media (max-width: 1200px) {
    .header-tools .btn-black{display: none;}
}

@media (max-width: 1024px) {
    .nav-menu{display: none;}
    .lang-switch{display: none;}
    .hamburger{display: block;}
    .header-tools {margin: 0 .2rem 0 auto;}

    #my_header_0001_0_mnav{display: block;width: 100%;height: 0;z-index:50;left: 0;right: 0;top: 80px; background: #fff;overflow-y: auto;/*border-top: 1px solid transparent;*/}
    #my_header_0001_0_mnav.cur{height: calc(100vh -  80px);border-top-color: #ebebeb;}

    #my_header_0001_0_mnav .one-nav{line-height:60px;}
    #my_header_0001_0_mnav .one-nav .one{cursor:pointer; margin: 0 30px;border-bottom: 1px solid #ebebeb;background: url(/module/my/header/0001/images/nav-icon1.svg) no-repeat right;}
    #my_header_0001_0_mnav .one-nav.nobg .one{background: none;}
    #my_header_0001_0_mnav .one-nav.cur .one{background-image:url(/module/my/header/0001/images/nav-icon2.svg);}
    #my_header_0001_0_mnav .one-nav.cur.nobg .one{background: none;}
    #my_header_0001_0_mnav .one-nav .one-a{font-size:18px;font-weight: 700;color:#333;}
    #my_header_0001_0_mnav .two-nav{width: 100%;background: #fefefe;padding: 0 30px;}
    #my_header_0001_0_mnav .two-nav .two{border-bottom: 1px solid #ebebeb;padding: 0 30px;}
    #my_header_0001_0_mnav .two-nav .two-a{font-size: 16px;color:#333;}

    #my_header_0001_0_mnav .lang{margin-top: 30px}
    #my_header_0001_0_mnav .lang .icon{width: 60px;height: 60px;border: 1px solid #333;font-size: 18px;color: #333;border-radius: 50%;margin: 0 15px;}
    #my_header_0001_0_mnav .lang .icon.cur{border-color: var(--mainColor);color: var(--mainColor);}
    #my_header_0001_0_mnav .lang .tit{font-size:18px;color: #333;margin-top:20px;}
}

/* ================= 992px 平板适配 ================= */
@media (max-width: 992px) {
    header {
        height: 0.606rem;
        padding: 0 0.455rem;
    }
    .logo img { height: 0.212rem; }

    .hamburger { display: block; }

    .nav-menu {
        position: fixed; top: 0.606rem; left: 0;
        width: 100%; height: calc(100vh - 0.606rem);
        background: rgba(249, 249, 251, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column; align-items: flex-start;
        gap: 0; padding: 0.303rem 0.455rem;
        overflow-y: auto; z-index: 999;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        height: auto; max-height: calc(100vh - 0.606rem);
    }
    .nav-toggle-input:checked ~ .nav-menu {
        transform: translateX(0);
    }
    .nav-item {
        height: auto; padding: 0.152rem 0;
        font-size: 0.136rem; width: 100%;
        border-bottom: 1px solid rgba(0,0,0,0.05);
        position: relative;
    }
    .nav-item:hover .mega-menu {
        opacity: 0; visibility: hidden;
    }
    .mega-menu {
        position: static; width: 100%;
        height: auto; min-height: 0;
        padding: 0.227rem 0;
        box-shadow: none; border-top: none;
        display: none;
        border-radius: 0.061rem;
        margin-top: 0.076rem;
    }
    .nav-item:hover .mega-menu,
    .nav-item:active .mega-menu {
        display: flex; opacity: 1; visibility: visible;
    }
    .mega-categories {
        flex-wrap: wrap; gap: 0.152rem;
        margin-bottom: 0.227rem;
        padding: 0 0.152rem;
        justify-content: flex-start;
    }
    .mega-cat-item { font-size: 0.121rem; }
    .mega-products {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.152rem; padding: 0 0.152rem;
    }
    .mega-product-card img {
        width: 1.212rem; height: 1.212rem;
        padding: 0.106rem; margin-bottom: 0.076rem;
    }
    .mega-product-card p { font-size: 0.106rem; }

    .mega-support { padding: 0.227rem 0 0.303rem 0; }
    .support-dropdown-grid {
        flex-direction: column; gap: 0.227rem;
        padding: 0 0.152rem;
    }
    .support-col h4 { font-size: 0.136rem; margin-bottom: 0.106rem; }
    .support-col li { margin-bottom: 0.076rem; }
    .support-col a { font-size: 0.106rem; }

    .header-tools { gap: 0.152rem; margin: 0 .2rem 0 auto;}
    .icon-btn { font-size: 0.136rem; }
    .header-tools .btn-black {
        padding: 0.091rem 0.182rem;
        font-size: 0.106rem;
    }
}

/* ================= 768px 手机端适配 ================= */
@media (max-width: 768px) {
    header {
        height: 1rem;
        padding: 0 0.227rem;
    }
    .logo img { height: 0.4rem; }

    .hamburger {
        width: 0.45rem; height: 0.4rem;
    }
    .hamburger span { height: 1.5px; }

    .nav-menu {
        top: 0.545rem;
        padding: 0.152rem 0.227rem;
    }
    .nav-item {
        font-size: 0.121rem;
        padding: 0.121rem 0;
    }
    .mega-products {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.106rem;
    }
    .mega-product-card img {
        width: 0.909rem; height: 0.909rem;
        padding: 0.076rem; margin-bottom: 0.061rem;
    }
    .mega-product-card p { font-size: 0.098rem; }
    .mega-cat-item { font-size: 0.114rem; }

    .header-tools { margin-right: .3rem;}
    .icon-btn { font-size: 0.36rem; }
    .header-tools .lang-switch { font-size: 0.106rem; }
    .header-tools .btn-black {
        padding: 0.076rem 0.136rem;
        font-size: 0.098rem;
    }

    #my_header_0001_0_mnav{top: 1rem;}
    #my_header_0001_0_mnav.cur{height: calc(100vh -  1rem);}
    #my_header_0001_0_mnav .one-nav{line-height: 12vw;}
    #my_header_0001_0_mnav .one-nav .one{background-size: 6%;margin: 0 5vw;}
    #my_header_0001_0_mnav .one-nav .one-a{font-size: 0.3rem;}
    #my_header_0001_0_mnav .two-nav .two-a{font-size: 0.28rem;}
    #my_header_0001_0_mnav .two-nav,
    #my_header_0001_0_mnav .two-nav .two{padding: 0 5vw;}
    #my_header_0001_0_mnav .lang{margin-top: 5vw;}
    #my_header_0001_0_mnav .lang .icon{width: 12vw;height: 12vw;font-size: .3rem;margin: 0 3vw;}
    #my_header_0001_0_mnav .lang .tit{font-size:.3rem;margin-top: 3vw;}
}

/* ================= 底部 Footer ================= */
footer { 
    background: #05122a; color: #9ba4b5; 
    display: flex; flex-direction: column; justify-content: center;padding: 80px 0 60px;
}
.footer-grid { display: grid; grid-template-columns: 2.5fr 1.2fr 1.2fr 1.2fr 2fr; gap: 40px; }
.footer-logo { margin-bottom: 30px; display: block;}
.footer-logo img { width: 210px; height: 32px; object-fit: contain; object-position: left; }
.footer-desc { line-height: 1.8; font-size: 16px; color: #9ba4b5;}
.footer-col h4 { color: #ffffff; font-size: 18px; font-weight: 600; margin-bottom: 30px; letter-spacing: 0.5px;}
.footer-col ul li { margin-bottom: 18px; }
.footer-col ul li a { transition: 0.3s; font-size: 16px; color: #9ba4b5;}
.footer-col ul li a:hover { color: #fff; }
.contact-info { margin-bottom: 35px;}
.contact-info p { font-size: 16px; color: #9ba4b5; font-weight: 500; margin-bottom: 5px;}
.contact-info span { display: block; font-size: 28px; font-weight: 700; color: #fff; letter-spacing: 1px;}
.newsletter h4 { color: #fff; margin-bottom: 15px;}
.newsletter-box { display: flex; border-bottom: 1px solid rgba(255,255,255,0.2); padding-bottom: 10px;}
.newsletter input { flex: 1; border: none; background: transparent; color: #fff; font-size: 16px; outline: none;}
.newsletter input::placeholder { color: #697a96; }
.newsletter button { background: none; border: none; color: #fff; font-size: 18px; cursor: pointer; transition: 0.3s;}
.newsletter button:hover { color: var(--vi-blue); }

.footer-bottom-wrap { margin-top: 60px; border-top: 1px solid rgba(255,255,255,0.1); padding-top: 40px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; }
.footer-bottom p { font-size: 16px; color: #697a96;}
.social-links { display: flex; gap: 20px; }
.social-links a { color: #9ba4b5; font-size: 20px; transition: 0.3s; background: rgba(255,255,255,0.05); width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; border-radius: 50%;}
.social-links a:hover { color: #fff; background: var(--vi-blue); transform: translateY(-3px);}

/* ================= 右下角交互工具栏 ================= */
.float-tools { position: fixed; bottom: 40px; right: 40px; z-index: 999; display: flex; flex-direction: column; gap: 15px; }
.tool-btn { 
    width: 54px; height: 54px; background: #fff; border-radius: 50%; 
    box-shadow: 0 5px 20px rgba(0,0,0,0.15); display: flex; align-items: center; 
    justify-content: center; font-size: 22px; color: var(--text-dark); cursor: pointer; 
    transition: 0.3s; position: relative;
}
.tool-btn:hover { background: var(--vi-blue); color: #fff; }

.consult-expand { 
    position: absolute; bottom: 100%; left: 0; width: 100%; 
    display: flex; flex-direction: column; gap: 12px; 
    opacity: 0; visibility: hidden; transform: translateY(20px); 
    transition: var(--transition-soft); padding-bottom: 20px;
}
.consult-btn:hover .consult-expand { opacity: 1; visibility: visible; transform: translateY(0); }
.expand-icon { 
    width: 54px; height: 54px; background: #fff; border-radius: 50%; 
    display: flex; align-items: center; justify-content: center; 
    color: var(--text-dark); box-shadow: 0 5px 15px rgba(0,0,0,0.1); transition: 0.3s;
}
.expand-icon:hover { background: var(--vi-blue); color: #fff; transform: scale(1.1); }

.weixin .qrcode{width: 120px;height: 120px;background-color: #fff;padding: 10px;position: absolute;top: 0;right: 60px;}
.weixin:hover .qrcode{display: block;}

#backToTop { opacity: 0; visibility: hidden; transform: translateY(20px); }
#backToTop.show { opacity: 1; visibility: visible; transform: translateY(0); }

@media (max-width: 1024px) {
    .float-tools{display: none;}
}

/* ================= 992px 平板适配 ================= */
@media (max-width: 992px) {
    footer {
        padding: 0.606rem 0 0.455rem;
    }
    .container-1600 { padding: 0 0.303rem; }
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.303rem;
    }
    .footer-logo { margin-bottom: 0.227rem; }
    .footer-logo img { width: 1.591rem; height: 0.242rem; }
    .footer-desc { font-size: 0.121rem; line-height: 1.8; }
    .footer-col h4 { font-size: 0.136rem; margin-bottom: 0.227rem; }
    .footer-col ul li { margin-bottom: 0.136rem; }
    .footer-col ul li a { font-size: 0.121rem; }

    .contact-info { margin-bottom: 0.265rem; }
    .contact-info p { font-size: 0.121rem; margin-bottom: 0.038rem; }
    .contact-info span { font-size: 0.212rem; letter-spacing: 0.008rem; }

    .newsletter h4 { margin-bottom: 0.114rem; }
    .newsletter input { font-size: 0.121rem; }
    .newsletter button { font-size: 0.136rem; }

    .footer-bottom-wrap { margin-top: 0.455rem; padding-top: 0.303rem; }
    .footer-bottom p { font-size: 0.121rem; }
    .social-links { gap: 0.152rem; }
    .social-links a {
        font-size: 0.152rem; width: 0.303rem; height: 0.303rem;
    }

    .float-tools { bottom: 0.303rem; right: 0.303rem; gap: 0.114rem; }
    .tool-btn { width: 0.409rem; height: 0.409rem; font-size: 0.167rem; }
    .expand-icon { width: 0.409rem; height: 0.409rem; }
    .weixin .qrcode { width: 0.909rem; height: 0.909rem; right: 0.455rem; }
}



/* ================= 768px 手机端适配 ================= */
@media (max-width: 768px) {
    footer {
        padding: 0.455rem 0 0.364rem;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 0.2rem;
    }
    .footer-logo { margin-bottom: 0.182rem; }
    .footer-logo img { width: 2.364rem; height: 0.412rem; }
    .footer-desc { font-size: 0.26rem; line-height: 1.7; }
    .footer-col { margin-bottom: 0.152rem; }
    .footer-col h4 { font-size: 0.32rem; margin-bottom: 0.182rem; }
    .footer-col ul li { margin-bottom: 0.25rem; }
    .footer-col ul li a { font-size: 0.28rem; }

    .contact-info { margin-bottom: 0.227rem; }
    .contact-info p { font-size: 0.26rem; margin-bottom: .1rem;}
    .contact-info span { font-size: 0.32rem; }

    .newsletter-box { padding-bottom: 0.2rem; }
    .newsletter input { font-size: 0.3rem; }

    .footer-bottom-wrap { margin-top: 0.303rem; padding-top: 0.227rem; }
    .footer-bottom {
        flex-direction: column; gap: 0.227rem;
        align-items: flex-start;
    }
    .footer-bottom p { font-size: 0.26rem; line-height: 1.6;}
    .footer-bottom a { font-size: 0.26rem; }
    .social-links { gap: 0.121rem; flex-wrap: wrap; }
    .social-links a {
        width: 0.333rem; height: 0.333rem; font-size: 0.152rem;
    }

    .float-tools { bottom: 0.227rem; right: 0.227rem; gap: 0.091rem; }
    .tool-btn { width: 0.364rem; height: 0.364rem; font-size: 0.152rem; }
    .expand-icon { width: 0.364rem; height: 0.364rem; }
}

/* ================= 全局变量与基础设定 ================= */
:root {
    --vi-blue: #0060bf;
    --text-dark: #111111;
    --text-gray: #666666;
    --bg-light: #f4f5f7;
    --bg-white: #ffffff;
    --bg-dark-gray: #ececec;
    --oem-bg: #e0e0e0;
    --transition-soft: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
    --radius-sm: 8px; 
}


/* ================= Banner ================= */
.hero-banner { position: relative; min-height: 900px; height: 100vh; width: 100%; overflow: hidden; background: #111; margin-bottom: 0; }

.banner-slide { 
    position: absolute; top: 0; left: 0; width: 100%; height: 100%; 
    opacity: 0; transition: opacity 1s ease-in-out; display: flex; align-items: center;
    background-size: cover; background-position: center; 
}
.banner-slide.active { opacity: 1; }

.banner-inner { max-width: 1600px; margin: 0 auto; width: 100%; padding: 0 40px; display: flex; justify-content: flex-end; position: relative; z-index: 2; }

/* 文本九宫格定位：pos-1左上 2中上 3右上 4左中 5居中 6右中 7左下 8中下 9右下 */
.banner-slide.pos-1,
.banner-slide.pos-2,
.banner-slide.pos-3 { align-items: flex-start; padding-top: 140px; }
.banner-slide.pos-7,
.banner-slide.pos-8,
.banner-slide.pos-9 { align-items: flex-end; padding-bottom: 130px; }
.banner-slide.pos-1 .banner-inner,
.banner-slide.pos-4 .banner-inner,
.banner-slide.pos-7 .banner-inner { justify-content: flex-start; }
.banner-slide.pos-2 .banner-inner,
.banner-slide.pos-5 .banner-inner,
.banner-slide.pos-8 .banner-inner { justify-content: center; }
.banner-slide.pos-3 .banner-inner,
.banner-slide.pos-6 .banner-inner,
.banner-slide.pos-9 .banner-inner { justify-content: flex-end; }
.banner-slide.pos-2 .banner-content,
.banner-slide.pos-5 .banner-content,
.banner-slide.pos-8 .banner-content { text-align: center; }
.banner-slide.pos-3 .banner-content,
.banner-slide.pos-6 .banner-content,
.banner-slide.pos-9 .banner-content { text-align: right; }

.banner-content { max-width: 800px; }

.banner-content h1 { color: #fff; text-transform: uppercase; }
.banner-content p { font-size: 24px; font-weight: 500; color: rgba(255,255,255,0.9); margin-top: 15px; margin-bottom: 40px; line-height: 1.4; }

.banner-dots { position: absolute; bottom: 50px; left: 50%; transform: translateX(-50%); display: flex; gap: 15px; z-index: 2; }
.dot { width: 50px; height: 3px; background: rgba(255,255,255,0.4); cursor: pointer; transition: 0.3s; }
.dot.active { background: var(--vi-blue); }

/* ================= 产品区 ================= */
.product-section { 
    background: #fff; padding-top: 20px; padding-bottom: 20px; display: flex; justify-content: center; overflow: hidden;
}
.product-grid { display: grid; grid-template-columns: 936px 936px; gap: 20px; margin: 0 auto; }

.product-item { width: 936px; height: 700px; background-color: #111; position: relative; overflow: hidden; display: flex; flex-direction: column; cursor: pointer; border-radius: var(--radius-sm);}

.product-bg { position: absolute; top:0; left:0; width: 100%; height: 100%; background-size: cover; background-position: center; transition: transform 0.8s ease; z-index: 1; }
.product-item:hover .product-bg { transform: scale(1.05); }

.product-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 50%; background: linear-gradient(to bottom, rgba(0,0,0,0.7), transparent); z-index: 2; pointer-events: none;}

.product-info { position: absolute; top: 60px; left: 0; width: 100%; text-align: center; z-index: 3; }
.product-info h3 { color: #fff; font-size: 40px; font-weight: 700; letter-spacing: -0.5px; margin: 0;}
.product-info p { font-size: 16px; color: rgba(255,255,255,0.8); margin-top: 10px; margin-bottom: 20px; }
.product-info .learn-more { font-size: 16px; font-weight: 600; text-transform: uppercase; transition: 0.3s; color: #fff; }
.product-item:hover .learn-more { color: var(--vi-blue); padding-left: 10px; }

/* ================= 解决方案 ================= */
.scenarios-section { 
    position: relative; min-height: 900px; height: 100vh; overflow: hidden; background-color: var(--oem-bg); 
    margin-top: 80px; 
}
.scenario-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background-size: cover; background-position: center; transition: opacity 0.8s ease; opacity: 0; }
.scenario-bg.active { opacity: 1; }
.scenario-overlay { position: absolute; top:0; left:0; width:100%; height:100%; background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 50%); z-index: 1;}

.scenario-inner { position: absolute; top: 0; left: 50%; transform: translateX(-50%); width: 100%; max-width: 1600px; height: 100%; z-index: 2; pointer-events: none; }

.scenario-top-title { position: absolute; top: 60px; left: 40px; color: #fff; font-size: 45px; font-weight: 700; letter-spacing: 0px; z-index: 3; }

.scenario-text { position: absolute; bottom: 150px; left: 40px; color: #fff; width: 50%; transition: opacity 0.5s; pointer-events: auto;}
.scenario-text p { font-size: 18px; margin-top: 15px; opacity: 0.8;}

.scenario-controls-wrapper { position: absolute; bottom: 0; left: 0; width: 100%; height: 80px; background: rgba(0,0,0,0.6); backdrop-filter: blur(5px); z-index: 3; }
.scenario-controls { max-width: 1600px; margin: 0 auto; height: 100%; display: flex; width: 100%; }

.scenario-tab, .scenario-more { flex: 1; display: flex; align-items: center; justify-content: center; font-size: 16px; font-weight: 600; text-transform: uppercase; transition: 0.3s; cursor: pointer;}
.scenario-tab { color: rgba(255,255,255,0.5); }
.scenario-tab:hover { color: #fff; background: rgba(255,255,255,0.1); }
.scenario-tab.active { color: #fff; background: var(--vi-blue); }

.scenario-more { color: #fff; background: transparent; }
.scenario-more:hover { color: var(--vi-blue); }

/* ================= 配件区 ================= */
.accessories-section { background: var(--bg-white); }
.acc-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; grid-template-rows: 1fr 1fr; gap: 24px; height: 700px; }
.acc-item { position: relative; overflow: hidden; cursor: pointer; display: flex; flex-direction: column; justify-content: flex-end; border-radius: var(--radius-sm);}

.acc-left { grid-column: 1 / 2; grid-row: 1 / 3; }
.acc-right-top { grid-column: 2 / 4; grid-row: 1 / 2; }
.acc-right-b1 { grid-column: 2 / 3; grid-row: 2 / 3; }
.acc-right-b2 { grid-column: 3 / 4; grid-row: 2 / 3; }

.acc-bg { position: absolute; top:0; left:0; width: 100%; height: 100%; background-size: cover; background-position: center; transition: transform 0.8s ease; z-index: 1; }
.acc-item:hover .acc-bg { transform: scale(1.08); }
.acc-bg img{max-width: 85%;max-height: 85%;width: auto;height: auto;}

.acc-text { 
    position: relative; z-index: 2; width: 100%; height: 80px; 
    padding: 0 30px; 
    background: rgba(0, 0, 0, 0.4); 
    backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
    transition: var(--transition-soft); display: flex; flex-direction: column; justify-content: center;
}
.acc-text h4 { font-size: 18px; font-weight: 600; margin: 0; color: #fff; transition: color 0.3s; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;}
.acc-desc { font-size: 16px; color: rgba(255,255,255,0.85); line-height: 1.5; margin-top: 0; opacity: 0; height: 0; transition: 0.4s ease; overflow: hidden; }

.acc-item:hover .acc-text { height: 160px; background: rgba(0, 0, 0, 0.75); }
.acc-item:hover .acc-text h4 { color: var(--vi-blue); white-space: normal;}
.acc-item:hover .acc-desc { opacity: 1; height: auto; margin-top: 10px; }

/* ================= OEM/ODM ================= */
.oem-section { 
    position: relative; overflow: hidden; display: flex; align-items: center; justify-content: center; text-align: center;
}

.oem-bg-video { 
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); 
    min-width: 100%; min-height: 100%; width: auto; height: auto; z-index: 0; object-fit: cover; 
}

.oem-overlay {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%; 
    background: rgba(0, 0, 0, 0.6); z-index: 1;
}

.oem-content { position: relative; z-index: 2; width: 100%; max-width: 1400px; padding: 0 20px;}
.oem-content h2 { white-space: nowrap; margin-bottom: 20px; color: #fff;}
.oem-desc { font-size: 18px; color: rgba(255, 255, 255, 0.9); line-height: 1.6; margin-top: 20px; font-weight: 500;}

.play-btn { width: 80px; height: 80px; background: #fff; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-size: 24px; color: var(--text-dark); cursor: pointer; transition: 0.3s; box-shadow: 0 10px 20px rgba(0,0,0,0.05); margin-top: 40px; }
.play-btn:hover { transform: scale(1.1); color: var(--vi-blue); }
.play-text { display: block; font-size: 16px; font-weight: 600; margin-top: 20px; letter-spacing: 1px; color: #fff;}

/* ================= 新闻资讯 ================= */
.news-section { background: var(--bg-white); overflow: hidden; padding-bottom: 80px; min-height: 900px; display: flex; flex-direction: column; justify-content: center;}

.news-track { display: flex; transition: transform 0.6s cubic-bezier(0.25, 0.8, 0.25, 1); width: 200%; }
.news-group { width: 50%; display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; flex-shrink: 0; padding: 0 5px;}

.news-item { cursor: pointer; }
.news-img { overflow: hidden; aspect-ratio: 16/10; background: var(--bg-dark-gray); margin-bottom: 25px; border-radius: var(--radius-sm);}
.news-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.news-item:hover .news-img img { transform: scale(1.05); }

.news-text .news-date { font-size: 16px; color: var(--text-gray); margin-bottom: 15px; display: block; }
.news-text h4 { font-size: 24px; font-weight: 600; margin-bottom: 20px; transition: 0.3s; line-height: 1.4; color: var(--text-dark);}
.news-item:hover .news-text h4 { color: var(--vi-blue); }
.news-text .learn-more { font-size: 16px; font-weight: 600; color: var(--vi-blue); transition: 0.3s;}

.news-controls { display: flex; justify-content: center; gap: 10px; margin-top: 60px; }
.news-dot { width: 40px; height: 4px; background: #ddd; cursor: pointer; transition: 0.3s; }
.news-dot.active { background: var(--vi-blue); }

/* ================= 1680px 适配 ================= */
@media (max-width: 1680px) {
    .banner-inner { max-width: 1400px; padding: 0 40px; }
    .scenario-inner { max-width: 1400px; }
    .scenario-top-title { top: 50px; left: 40px; font-size: 42px; }
    .scenario-text { bottom: 130px; left: 40px; width: 50%; }
    .scenario-text h2 { font-size: 42px; }
    .scenario-text p { font-size: 17px; }
    .scenario-controls { max-width: 1400px; }
    .scenario-controls-wrapper { height: 70px; }
    .scenario-tab, .scenario-more { font-size: 15px; }
    .product-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; max-width: 1400px; }
    .product-item { width: 100%; height: auto; aspect-ratio: 16/10; min-height: 500px; }
}

/* ================= 1536px 适配 ================= */
@media (max-width: 1536px) {
    .banner-inner { max-width: 1200px; }
    .scenarios-section{min-height: 600px;}
    .scenario-inner { max-width: 1200px; }
    .scenario-top-title { top: 45px; left: 35px; font-size: 40px; }
    .scenario-text { bottom: 120px; left: 35px; width: 50%; }
    .scenario-text h2 { font-size: 40px; }
    .scenario-text p { font-size: 16px; }
    .scenario-controls { max-width: 1200px; }
    .scenario-controls-wrapper { height: 65px; }
    .scenario-tab, .scenario-more { font-size: 14px; }
    .product-grid { max-width: 1200px; }
    .acc-grid { height: 600px; }
    .oem-content { max-width: 1200px; }
}

/* ================= 1440px 适配 ================= */
@media (max-width: 1440px) {
    .banner-inner { max-width: 1100px; padding: 0 30px; }
    .banner-content h1 { font-size: 48px; }
    .scenario-inner { max-width: 1100px; }
    .scenario-top-title { top: 40px; left: 30px; font-size: 38px; }
    .scenario-text { bottom: 110px; left: 30px; width: 50%; }
    .scenario-text h2 { font-size: 38px; }
    .scenario-text p { font-size: 15px; }
    .scenario-controls { max-width: 1100px; }
    .scenario-controls-wrapper { height: 60px; }
    .scenario-tab, .scenario-more { font-size: 14px; }
    .product-grid { max-width: 1100px; }
    .acc-grid { height: 550px; }
    .oem-content { max-width: 1100px; }
}

/* ================= 1366px 适配 ================= */
@media (max-width: 1366px) {
    .banner-inner { max-width: 1000px; padding: 0 25px; }
    .banner-content h1 { font-size: 42px; }
    .banner-content p { font-size: 20px; }
    .scenario-inner { max-width: 1000px; }
    .scenario-top-title { top: 35px; left: 25px; font-size: 35px; }
    .scenario-text { bottom: 100px; left: 25px; width: 50%; }
    .scenario-text h2 { font-size: 35px; }
    .scenario-text p { font-size: 14px; }
    .scenario-controls { max-width: 1000px; }
    .scenario-controls-wrapper { height: 55px; }
    .scenario-tab, .scenario-more { font-size: 13px; }
    .product-grid { max-width: 1000px; }
    .product-info h3 { font-size: 32px; }
    .acc-grid { height: 500px; }
    .acc-text h4 { font-size: 16px; }
    .oem-content { max-width: 1000px; }
    .oem-content h2 { font-size: 36px; }
    .news-text h4 { font-size: 20px; }
}

/* ================= 1280px 适配 ================= */
@media (max-width: 1280px) {
    .banner-inner { max-width: 900px; padding: 0 20px; }
    .banner-content h1 { font-size: 38px; }
    .banner-content p { font-size: 18px; }
    .scenario-inner { max-width: 900px; }
    .scenario-top-title { top: 30px; left: 20px; font-size: 32px; }
    .scenario-text { bottom: 90px; left: 20px; width: 55%; }
    .scenario-text h2 { font-size: 32px; }
    .scenario-text p { font-size: 14px; }
    .scenario-controls { max-width: 900px; }
    .scenario-controls-wrapper { height: 50px; }
    .scenario-tab, .scenario-more { font-size: 12px; padding: 0 12px; }
    .product-grid { max-width: 900px; }
    .product-info h3 { font-size: 28px; }
    .product-info p { font-size: 14px; }
    .acc-grid { height: 450px; gap: 16px; }
    .acc-text { height: 60px; padding: 0 20px; }
    .acc-text h4 { font-size: 15px; }
    .acc-desc { font-size: 14px; }
    .oem-content { max-width: 900px; }
    .oem-content h2 { font-size: 32px; }
    .oem-desc { font-size: 16px; }
    .news-text h4 { font-size: 18px; }
}

/* ================= 992px 平板适配 ================= */
@media (max-width: 992px) {
    .container-1600 { padding: 0 0.303rem; }
    .section-wrapper { min-height: 6.818rem; padding: 0.909rem 0; }

    .title-72 { font-size: 0.545rem; letter-spacing: -0.015rem; margin-bottom: 0.076rem; }
    .title-60 { font-size: 0.455rem; letter-spacing: -0.008rem; }
    .title-45 { font-size: 0.341rem; letter-spacing: -0.004rem; }
    .title-40 { font-size: 0.303rem; letter-spacing: -0.004rem; }

    .section-header { margin-bottom: 0.455rem; }
    .view-all { font-size: 0.121rem; }

    /* Banner */
    .hero-banner { min-height: 6.818rem; height: 6.81rem; aspect-ratio: 16/9; }
    .banner-inner { padding: 0 0.303rem; }
    .banner-content { max-width: 6.061rem; }
    .banner-content h1 { font-size: 0.455rem; }
    .banner-content p { font-size: 0.182rem; margin-top: 0.114rem; margin-bottom: 0.303rem; }
    .banner-dots { bottom: 0.379rem; gap: 0.114rem; }
    .dot { width: 0.379rem; height: 0.023rem; }
    .banner-slide.pos-1,
    .banner-slide.pos-2,
    .banner-slide.pos-3 { padding-top: 1rem; }
    .banner-slide.pos-7,
    .banner-slide.pos-8,
    .banner-slide.pos-9 { padding-bottom: 0.9rem; }

    /* 产品区 */
    .product-section { padding: 0.152rem 0; }
    .product-grid { grid-template-columns: 1fr; gap: 0.152rem; }
    .product-item { width: 92%; margin: 0 auto; height: auto; min-height: 5.303rem; aspect-ratio: 16/9; }
    .product-info { top: 0.455rem; }
    .product-info h3 { font-size: 0.303rem; }
    .product-info p { font-size: 0.121rem; margin-top: 0.076rem; margin-bottom: 0.152rem; }
    .product-info .learn-more { font-size: 0.121rem; }

    /* 解决方案 */
    .scenarios-section { min-height: auto; height: auto; aspect-ratio: 16/9; margin-top: 0.606rem; }
    .scenario-top-title { top: 0.364rem; left: 0.227rem; font-size: 0.303rem; }
    .scenario-text { bottom: 0.909rem; left: 0.227rem; width: 60%; }
    .scenario-text h2 { font-size: 0.364rem; }
    .scenario-text p { font-size: 0.121rem; margin-top: 0.091rem; }
    .scenario-controls-wrapper { height: 0.545rem; }
    .scenario-tab, .scenario-more { font-size: 0.106rem; }

    /* 配件区 */
    .acc-grid { grid-template-columns: 1fr 1fr; grid-template-rows: auto; gap: 0.182rem; height: auto; }
    .acc-left { grid-column: 1 / 3; grid-row: auto; min-height: 3.788rem; }
    .acc-right-top { grid-column: 1 / 3; grid-row: auto; min-height: 2.273rem; }
    .acc-right-b1 { grid-column: 1 / 2; grid-row: auto; min-height: 2.273rem; }
    .acc-right-b2 { grid-column: 2 / 3; grid-row: auto; min-height: 2.273rem; }
    .acc-text { height: 0.606rem; padding: 0 0.227rem; }
    .acc-text h4 { font-size: 0.136rem; }
    .acc-desc { font-size: 0.121rem; }
    .acc-item:hover .acc-text { height: 1.212rem; }

    /* OEM */
    .oem-content { padding: 0 0.152rem; }
    .oem-desc { font-size: 0.136rem; margin-top: 0.152rem; }
    .play-btn { width: 0.606rem; height: 0.606rem; font-size: 0.182rem; margin-top: 0.303rem; }
    .play-text { font-size: 0.121rem; margin-top: 0.152rem; }

    /* 新闻 */
    .news-section { min-height: auto; padding-bottom: 0.606rem; }
    .news-group { grid-template-columns: repeat(2, 1fr); gap: 0.303rem; }
    .news-img { margin-bottom: 0.189rem; }
    .news-text .news-date { font-size: 0.121rem; margin-bottom: 0.114rem; }
    .news-text h4 { font-size: 0.182rem; margin-bottom: 0.152rem; }
    .news-text .learn-more { font-size: 0.121rem; }
    .news-controls { margin-top: 0.455rem; gap: 0.076rem; }
    .news-dot { width: 0.303rem; height: 0.030rem; }
}

/* ================= 768px 手机端适配 ================= */
@media (max-width: 768px) {
    .section-wrapper { min-height: auto; padding: 0.8rem 0; }

    .title-72 { font-size: 0.36rem; letter-spacing: -0.008rem; margin-bottom: 0.061rem; }
    .title-60 { font-size: 0.36rem; }
    .title-45 { font-size: 0.36rem; }
    .title-40 { font-size: 0.36rem; }
    .section-header { margin-bottom: 0.303rem; }
    .view-all{ font-size: .26rem; }

    /* Banner */
    .hero-banner { aspect-ratio: auto; height: 9rem; min-height: 0; padding: 1.212rem 0 0.606rem 0; }
    .banner-content { max-width: 100%; }
    .banner-content p { font-size: 0.3rem; margin-bottom: 0.227rem; }
    .banner-slide.pos-1,
    .banner-slide.pos-2,
    .banner-slide.pos-3 { padding-top: 0.4rem; }
    .banner-slide.pos-7,
    .banner-slide.pos-8,
    .banner-slide.pos-9 { padding-bottom: 0.6rem; }

    /* 产品区 */
    .product-info { top: 0.303rem; }
    .product-info h3 { font-size: 0.36rem; }
    .product-info p { font-size: 0.26rem; margin-top: 0.2rem; margin-bottom: 0.2rem; }
    .product-info .learn-more { font-size: 0.26rem; }

    /* 解决方案 */
    .scenarios-section { aspect-ratio: auto; height: 6rem; min-height: 0; padding: 0.606rem 0 0 0; margin-top: 0; }
    .scenario-top-title { top: 0.227rem; left: 0.227rem; font-size: 0.36rem; }
    .scenario-text { position: relative; bottom: auto; left: auto; width: 100%; padding: 0.8rem 0.227rem 0 0.227rem; }
    .scenario-text h2 { font-size: 0.36rem; }
    .scenario-text p { font-size: 0.26rem; margin-top: 0.076rem; }
    .scenario-controls-wrapper { height: auto; }
    .scenario-controls { flex-wrap: wrap; }
    .scenario-tab { font-size: 0.26rem; padding: 0.2rem 0.076rem; flex: none; width: 50%;}
    .scenario-more { font-size: 0.26rem; padding: 0.2rem 0.076rem; flex: none; width: 100%; justify-content: center; }

    /* 配件区 */
    .acc-grid { grid-template-columns: 1fr; gap: 0.152rem; }
    .acc-left { grid-column: 1; min-height: 4rem; }
    .acc-right-top { grid-column: 1; min-height: 4rem; }
    .acc-right-b1 { grid-column: 1; min-height: 4rem; }
    .acc-right-b2 { grid-column: 1; min-height: 4rem; }
    .acc-text { height: 1rem; padding: 0 0.182rem; }
    .acc-text h4 { font-size: 0.36rem; font-weight: 700; }
    .acc-desc { font-size: 0.26rem; }
    .acc-item:hover .acc-text { height: auto; padding: 0.152rem 0.182rem; }

    /* OEM */
    .oem-content { padding: 0 0.152rem; }
    .oem-content h2 { white-space: normal; font-size: 0.36rem; margin-bottom: 0.152rem; }
    .oem-desc { font-size: 0.26rem; margin-top: 0.121rem; line-height: 1.6; }
    .play-btn { width: 0.545rem; height: 0.545rem; font-size: 0.182rem; margin-top: 0.227rem; }
    .play-text { font-size: 0.26rem; margin-top: 0.121rem; }

    /* 新闻 */
    .news-section { padding-bottom: 0.455rem; }
    .news-group { grid-template-columns: 1fr; gap: 0.303rem; }
    .news-img { margin-bottom: 0.152rem; }
    .news-text .news-date { font-size: 0.26rem; margin-bottom: 0.076rem; }
    .news-text h4 { font-size: 0.32rem; margin-bottom: 0.121rem; line-height: 1.4; }
    .news-text .learn-more { font-size: 0.26rem; }
    .news-controls { margin-top: 0.303rem; }
}