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; }
}
.pdp-breadcrumbs-wrapper { width: 100%; padding-bottom: 30px; text-align: left; }
.breadcrumbs { display: flex; align-items: center; gap: 10px; font-size: 14px; font-weight: 600; color: var(--text-gray); }
.breadcrumbs a { transition: color 0.3s; color: var(--text-gray); text-decoration: none; }
.breadcrumbs a:hover { color: var(--vi-blue); }
.breadcrumbs .separator { color: rgba(0,0,0,0.3); font-size: 12px; }
.breadcrumbs .current { color: var(--text-dark); }

@media (max-width: 992px) {
    .pdp-breadcrumbs-wrapper{display: none;}
}

.page-support {
    min-height: 100vh;
    background: var(--bg-white);
    padding-top: 80px; 
}
.support-hero {
    width: 100%; 
    height: 480px; 
    background-color: #0b0b10;
    background-image: url('images/support-banner.jpg'); 
    background-size: cover; 
    background-position: center; 
    position: relative;
    display: flex; 
    align-items: center; 
    justify-content: center; 
    text-align: center; 
    color: #ffffff;
}
.support-hero::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0, 0, 0, 0.5); z-index: 1;
}

.pdp-breadcrumbs-wrapper {
    position: absolute; top: 40px; left: 0; width: 100%; z-index: 10; text-align: left;
}
.breadcrumbs { display: flex; align-items: center; gap: 10px; font-size: 15px; font-weight: 500; color: rgba(255,255,255,0.7); }
.breadcrumbs a { transition: color 0.3s; color: rgba(255,255,255,0.7); text-decoration: none; text-shadow: 0 1px 5px rgba(0,0,0,0.3); }
.breadcrumbs a:hover { color: var(--vi-blue); }
.breadcrumbs .separator { color: rgba(255,255,255,0.4); font-size: 13px; text-shadow: 0 1px 5px rgba(0,0,0,0.3); }
.breadcrumbs .current { color: #ffffff; font-weight: 600; text-shadow: 0 1px 5px rgba(0,0,0,0.3); }

.hero-content {
    position: relative; z-index: 2; width: 100%; max-width: 800px; padding: 0 20px;
}
.hero-content h1 { font-size: 48px; font-weight: 800; margin-bottom: 20px; text-transform: uppercase; letter-spacing: -0.5px; }
.hero-content p { font-size: 18px; color: rgba(255,255,255,0.8); margin-bottom: 40px; font-weight: 500;}

.support-search-box {
    display: flex; background: #ffffff; border-radius: 8px; overflow: hidden; padding: 5px; box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}
.support-search-box input {
    flex-grow: 1; border: none; padding: 18px 25px; font-size: 16px; font-family: 'Montserrat', sans-serif; outline: none; color: var(--text-dark);
}
.support-search-box button {
    background: var(--vi-blue); color: #fff; border: none; padding: 0 30px; font-size: 16px; font-weight: 700; cursor: pointer; border-radius: 4px; transition: 0.3s; text-transform: uppercase;
}
.support-search-box button:hover { background: #004b99; }

.support-dashboard {
    padding: 100px 0 120px 0;
    background: #ffffff;
}

.category-section {
    margin-bottom: 100px;
}
.category-section:last-child {
    margin-bottom: 0;
}

.category-header {
    margin-bottom: 40px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}
.category-header span {
    font-size: 14px; font-weight: 700; color: var(--vi-blue); text-transform: uppercase; letter-spacing: 2px; margin-bottom: 10px;
}
.category-header h2 {
    font-size: 36px; font-weight: 800; color: var(--text-dark); margin: 0;
}

.grid-vertical-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}
.card-vertical {
    text-decoration: none; display: flex; flex-direction: column;
    padding: 40px; border: 1px solid rgba(0,0,0,0.08); border-radius: 8px;
    transition: all 0.4s ease; background: #fff; position: relative; overflow: hidden;
}
.card-vertical::before {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px; background: transparent; transition: 0.4s;
}
.card-vertical:hover { box-shadow: 0 20px 40px rgba(0,0,0,0.06); transform: translateY(-5px); border-color: transparent; }
.card-vertical:hover::before { background: var(--vi-blue); }

.card-vertical .icon { font-size: 32px; color: var(--vi-blue); margin-bottom: 25px; transition: transform 0.3s; }
.card-vertical:hover .icon { transform: scale(1.1); }
.card-vertical h3 { font-size: 22px; font-weight: 700; color: var(--text-dark); margin-bottom: 15px; }
.card-vertical p { font-size: 16px; color: var(--text-gray); line-height: 1.6; margin-bottom: 25px; flex-grow: 1; }
.link-text { font-size: 15px; font-weight: 700; color: var(--text-dark); text-transform: uppercase; display: flex; align-items: center; gap: 8px; transition: 0.3s;}
.card-vertical:hover .link-text { color: var(--vi-blue); }

.grid-horizontal-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}
.card-horizontal {
    text-decoration: none; display: flex; align-items: flex-start; gap: 25px;
    padding: 35px; border: 1px solid rgba(0,0,0,0.08); border-radius: 8px;
    transition: all 0.4s ease; background: #fff;
}
.card-horizontal:hover { box-shadow: 0 15px 35px rgba(0,0,0,0.06); border-color: var(--vi-blue); }
.card-horizontal .icon-box {
    width: 60px; height: 60px; background: rgba(0, 96, 191, 0.05); border-radius: 8px; 
    display: flex; align-items: center; justify-content: center; font-size: 24px; color: var(--vi-blue); flex-shrink: 0;
    transition: 0.4s;
}
.card-horizontal:hover .icon-box { background: var(--vi-blue); color: #fff; }
.card-horizontal .text-content { display: flex; flex-direction: column; }
.card-horizontal h3 { font-size: 20px; font-weight: 700; color: var(--text-dark); margin-bottom: 10px; }
.card-horizontal p { font-size: 15px; color: var(--text-gray); line-height: 1.6; margin: 0; }

.banner-download {
    display: flex; align-items: center; justify-content: space-between;
    background: #0b0b10; border-radius: 12px; padding: 60px 80px;
    text-decoration: none; position: relative; overflow: hidden; transition: 0.4s;
}
.banner-download::after {
    content: ''; position: absolute; right: -50px; top: -50px; width: 300px; height: 300px;
    background: radial-gradient(circle, rgba(0,96,191,0.4) 0%, rgba(0,0,0,0) 70%); z-index: 1; pointer-events: none;
}
.banner-download:hover { transform: translateY(-5px); box-shadow: 0 20px 50px rgba(0,0,0,0.15); }

.banner-text { position: relative; z-index: 2; max-width: 600px; }
.banner-text h3 { font-size: 32px; font-weight: 800; color: #fff; margin-bottom: 15px; }
.banner-text p { font-size: 16px; color: rgba(255,255,255,0.7); line-height: 1.6; margin: 0; }

.banner-action { position: relative; z-index: 2; }
.btn-white {
    background: #fff; color: var(--text-dark); padding: 18px 40px; border-radius: 4px;
    font-size: 16px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; display: inline-flex; align-items: center; gap: 10px; transition: 0.3s;
}
.banner-download:hover .btn-white { background: var(--vi-blue); color: #fff; }

/* ================= 1680px ================= */
@media (max-width: 1680px) {
    .support-dashboard { padding: 80px 0 100px 0; }
    .category-section { margin-bottom: 80px; }
    .hero-content { max-width: 750px; }
}

/* ================= 1536px ================= */
@media (max-width: 1536px) {
    .support-dashboard { padding: 70px 0 90px 0; }
    .category-section { margin-bottom: 70px; }
    .hero-content { max-width: 700px; }
    .hero-content h1 { font-size: 44px; }
    .grid-vertical-3 { gap: 30px; }
    .card-vertical { padding: 35px; }
    .banner-download { padding: 50px 60px; }
}

/* ================= 1440px ================= */
@media (max-width: 1440px) {
    .support-dashboard { padding: 60px 0 80px 0; }
    .category-section { margin-bottom: 60px; }
    .hero-content { max-width: 650px; }
    .hero-content h1 { font-size: 42px; }
    .hero-content p { font-size: 16px; margin-bottom: 35px; }
    .grid-vertical-3 { gap: 25px; }
    .card-vertical { padding: 30px; }
    .card-vertical h3 { font-size: 20px; }
    .card-horizontal { padding: 30px; gap: 20px; }
    .banner-download { padding: 45px 50px; }
    .banner-text h3 { font-size: 28px; }
    .btn-white { padding: 16px 35px; font-size: 15px; }
}

/* ================= 1366px ================= */
@media (max-width: 1366px) {
    .support-hero { height: 440px; }
    .hero-content { max-width: 600px; }
    .hero-content h1 { font-size: 38px; }
    .hero-content p { font-size: 15px; margin-bottom: 30px; }
    .support-search-box input { font-size: 15px; padding: 16px 22px; }
    .support-search-box button { font-size: 15px; padding: 0 25px; }
    .support-dashboard { padding: 50px 0 70px 0; }
    .category-section { margin-bottom: 50px; }
    .category-header span { font-size: 13px; }
    .category-header h2 { font-size: 32px; }
    .grid-vertical-3 { gap: 22px; }
    .card-vertical { padding: 28px; }
    .card-vertical .icon { font-size: 28px; margin-bottom: 20px; }
    .card-vertical h3 { font-size: 18px; }
    .card-vertical p { font-size: 14px; }
    .link-text { font-size: 14px; }
    .card-horizontal { padding: 28px; gap: 18px; }
    .card-horizontal .icon-box { width: 50px; height: 50px; font-size: 22px; }
    .card-horizontal h3 { font-size: 18px; }
    .card-horizontal p { font-size: 14px; }
    .banner-download { padding: 40px 45px; }
    .banner-text h3 { font-size: 26px; }
    .banner-text p { font-size: 14px; }
    .btn-white { padding: 15px 30px; font-size: 14px; }
}

/* ================= 1280px ================= */
@media (max-width: 1280px) {
    .support-hero { height: 420px; }
    .hero-content { max-width: 550px; }
    .hero-content h1 { font-size: 36px; }
    .hero-content p { font-size: 14px; margin-bottom: 28px; }
    .support-search-box input { font-size: 14px; padding: 15px 20px; }
    .support-search-box button { font-size: 14px; padding: 0 22px; }
    .breadcrumbs { font-size: 14px; }
    .support-dashboard { padding: 45px 0 60px 0; }
    .category-section { margin-bottom: 45px; }
    .category-header span { font-size: 12px; margin-bottom: 8px; }
    .category-header h2 { font-size: 30px; }
    .grid-vertical-3 { gap: 20px; }
    .card-vertical { padding: 25px; }
    .card-vertical .icon { font-size: 26px; margin-bottom: 18px; }
    .card-vertical h3 { font-size: 17px; margin-bottom: 12px; }
    .card-vertical p { font-size: 13px; line-height: 1.5; }
    .link-text { font-size: 13px; }
    .grid-horizontal-2 { gap: 20px; }
    .card-horizontal { padding: 25px; gap: 16px; }
    .card-horizontal .icon-box { width: 48px; height: 48px; font-size: 20px; }
    .card-horizontal h3 { font-size: 17px; }
    .card-horizontal p { font-size: 13px; }
    .banner-download { padding: 35px 40px; }
    .banner-text h3 { font-size: 24px; margin-bottom: 12px; }
    .banner-text p { font-size: 13px; }
    .btn-white { padding: 14px 28px; font-size: 13px; }
}

/* ================= 1024px ================= */
@media (max-width: 1024px) {
    .grid-vertical-3 { grid-template-columns: repeat(2, 1fr); }
    .banner-download { flex-direction: column; align-items: flex-start; gap: 30px; padding: 40px; }
}

/* ================= 992px ================= */
@media (max-width: 992px) {
    .page-support {padding-top: .606rem;}
    .support-hero { height: 360px; }
    .hero-content { max-width: 100%; }
    .hero-content h1 { font-size: 0.333rem; margin-bottom: 0.152rem; }
    .hero-content p { font-size: 0.121rem; margin-bottom: 0.227rem; }
    .support-search-box { padding: 0.038rem; }
    .support-search-box input { font-size: 0.114rem; padding: 0.121rem 0.167rem; }
    .support-search-box button { font-size: 0.114rem; padding: 0 0.212rem; }
    .breadcrumbs { font-size: 0.114rem; gap: 0.076rem; }
    .pdp-breadcrumbs-wrapper { top: 0.303rem; }
    .support-dashboard { padding: 0.455rem 0 0.606rem 0; }
    .category-section { margin-bottom: 0.455rem; }
    .category-header { margin-bottom: 0.303rem; }
    .category-header span { font-size: 0.091rem; margin-bottom: 0.076rem; }
    .category-header h2 { font-size: 0.242rem; }
    .grid-vertical-3 { gap: 0.182rem; }
    .card-vertical { padding: 0.227rem; }
    .card-vertical .icon { font-size: 0.242rem; margin-bottom: 0.182rem; }
    .card-vertical h3 { font-size: 0.152rem; margin-bottom: 0.114rem; }
    .card-vertical p { font-size: 0.106rem; line-height: 1.5; margin-bottom: 0.182rem; }
    .link-text { font-size: 0.106rem; gap: 0.061rem; }
    .grid-horizontal-2 { gap: 0.152rem; }
    .card-horizontal { padding: 0.212rem; gap: 0.136rem; }
    .card-horizontal .icon-box { width: 0.394rem; height: 0.394rem; font-size: 0.167rem; }
    .card-horizontal h3 { font-size: 0.136rem; margin-bottom: 0.076rem; }
    .card-horizontal p { font-size: 0.106rem; }
    .banner-download { padding: 0.303rem; gap: 0.227rem; }
    .banner-text h3 { font-size: 0.212rem; margin-bottom: 0.114rem; }
    .banner-text p { font-size: 0.106rem; }
    .btn-white { font-size: 0.106rem; padding: 0.121rem 0.242rem; }
}

/* ================= 768px ================= */
@media (max-width: 768px) {
    .page-support {padding-top: 1rem;}
    .support-hero { height: 280px; }
    .hero-content h1 { font-size: 0.32rem; margin-bottom: 0.121rem; }
    .hero-content p { font-size: 0.26rem; margin-bottom: 0.182rem; }
    .support-search-box { flex-direction: column; padding: 0.076rem; background: transparent; box-shadow: none; gap: 0.076rem; border-radius: 0.061rem; }
    .support-search-box input { border-radius: 0.030rem; padding: 0.114rem 0.121rem; font-size: 0.26rem;background-color: #fff; }
    .support-search-box button { border-radius: 0.030rem; padding: 0.114rem; font-size: 0.26rem; }
    .breadcrumbs { font-size: 0.26rem; gap: 0.061rem; }
    .pdp-breadcrumbs-wrapper { top: 0.182rem; }
    .support-dashboard { padding: 0.303rem 0 0.455rem 0; }
    .category-section { margin-bottom: 0.303rem; }
    .category-header { margin-bottom: 0.182rem; }
    .category-header span { font-size: 0.227rem; margin-bottom: 0.061rem; letter-spacing: 0.015rem; }
    .category-header h2 { font-size: 0.36rem; }
    .grid-vertical-3, .grid-horizontal-2 { grid-template-columns: 1fr; gap: 0.121rem; }
    .card-vertical { padding: .4rem; }
    .card-vertical .icon { font-size: 0.4rem; margin-bottom: 0.152rem; }
    .card-vertical h3 { font-size: 0.3rem; margin-bottom: 0.091rem; }
    .card-vertical p { font-size: 0.26rem; line-height: 1.5; margin-bottom: 0.152rem; }
    .link-text { font-size: 0.26rem; gap: 0.061rem; }
    .card-horizontal { flex-direction: column; padding: 0.3rem; gap: 0.121rem; }
    .card-horizontal .icon-box { width: 0.5rem; height: 0.5rem; font-size: 0.4rem; }
    .card-horizontal h3 { font-size: 0.3rem; margin-bottom: 0.061rem; }
    .card-horizontal p { font-size: 0.26rem; }
    .banner-download { padding: .3rem; flex-direction: column; align-items: flex-start; gap: 0.152rem; }
    .banner-text h3 { font-size: 0.303rem; margin-bottom: 0.114rem; }
    .banner-text p { font-size: 0.26rem; }
    .btn-white { font-size: 0.26rem; padding: 0.2rem; }
}