/* ========================================
   素元科技企业官网 - 全局样式
   ======================================== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif; color: #333; line-height: 1.6; background: #fff; }
a { text-decoration: none; color: inherit; transition: color 0.3s ease; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }

:root {
    --primary-color: #1a73e8;
    --primary-light: #4a9af5;
    --primary-dark: #0d47a1;
    --secondary-color: #00bcd4;
    --text-dark: #2c3e50;
    --text-gray: #666;
    --text-light: #999;
    --bg-light: #f8fafc;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.15);
    --transition: all 0.3s ease;
}

/* 头部导航 */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(255,255,255,0.98); box-shadow: 0 2px 20px rgba(0,0,0,0.08); }
.header-top { background: linear-gradient(90deg, var(--primary-color), var(--primary-light)); padding: 8px 0; color: #fff; font-size: 13px; }
.header-top .container { display: flex; justify-content: flex-end; align-items: center; gap: 20px; }
.header-top a { color: #fff; opacity: 0.9; }
.header-top a:hover { opacity: 1; }
.header-main { padding: 15px 0; }
.header-main .container { display: flex; justify-content: flex-start; align-items: center; }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo img { height: 50px; width: auto; }
.logo-text { font-size: 24px; font-weight: 700; background: linear-gradient(135deg, var(--primary-color), var(--secondary-color)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

.nav-menu { display: flex; gap: 5px; margin-left: auto; margin-right: -30px; }
.nav-item { position: relative; }
.nav-item > a { display: flex; align-items: center; gap: 5px; padding: 10px 20px; font-size: 15px; font-weight: 500; color: var(--text-dark); border-radius: 6px; transition: var(--transition); }
.nav-item > a:hover { color: var(--primary-color); background: rgba(26,115,232,0.05); }
.nav-item > a i { font-size: 12px; transition: transform 0.3s ease; }
.nav-item:hover > a i { transform: rotate(180deg); }

.dropdown { position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(10px); min-width: 180px; background: #fff; border-radius: 8px; box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transition: var(--transition); padding: 10px 0; z-index: 100; }
.dropdown::before { content: ''; position: absolute; top: -10px; left: 50%; transform: translateX(-50%); border: 10px solid transparent; border-bottom-color: #fff; }
.nav-item:hover .dropdown { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.dropdown li a { display: block; padding: 10px 25px; font-size: 14px; color: var(--text-dark); white-space: nowrap; transition: var(--transition); }
.dropdown li a:hover { color: var(--primary-color); background: rgba(26,115,232,0.05); padding-left: 30px; }

/* 产品中心两级下拉：一级栏目 hover，右侧展开二级 */
.dropdown .cat { position: relative; }
.dropdown .cat > a { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.dropdown .cat > a i { font-size: 11px; color: var(--text-gray); transition: var(--transition); }
.dropdown .cat > a:hover { padding-left: 25px; }
.dropdown .cat:hover { background: rgba(26,115,232,0.05); }
.dropdown .cat:hover > a { color: var(--primary-color); }
.dropdown .cat:hover > a i { color: var(--primary-color); transform: translateX(2px); }
.dropdown-sub { position: absolute; top: -10px; left: 100%; min-width: 210px; background: #fff; border-radius: 0 8px 8px 0; box-shadow: var(--shadow-lg); padding: 10px 0; opacity: 0; visibility: hidden; transform: translateX(6px); transition: var(--transition); z-index: 101; }
.dropdown .cat:hover .dropdown-sub { opacity: 1; visibility: visible; transform: translateX(0); }
.dropdown-sub li a { display: block; padding: 10px 25px; font-size: 14px; color: var(--text-dark); white-space: nowrap; transition: var(--transition); }
.dropdown-sub li a:hover { color: var(--primary-color); background: rgba(26,115,232,0.05); padding-left: 30px; }

.menu-toggle { display: none; width: 44px; height: 44px; flex-shrink: 0; align-items: center; justify-content: center; background: none; border: none; font-size: 23px; color: var(--text-dark); cursor: pointer; border-radius: 10px; transition: var(--transition); }
.menu-toggle:hover, .menu-toggle.active { background: rgba(26,115,232,0.08); color: var(--primary-color); }
.menu-toggle.active i::before { content: "\f00d"; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; position: relative; }
.section-header { text-align: center; margin-bottom: 50px; }
.section-title { font-size: 32px; font-weight: 700; color: var(--text-dark); margin-bottom: 15px; position: relative; display: inline-block; }
.section-title::after { content: ''; position: absolute; bottom: -10px; left: 50%; transform: translateX(-50%); width: 60px; height: 3px; background: linear-gradient(90deg, var(--primary-color), var(--secondary-color)); border-radius: 2px; }
.section-subtitle { font-size: 16px; color: var(--text-gray); margin-top: 20px; }

/* 轮播图 */
.hero-slider { position: relative; width: 100%; height: 470px; overflow: hidden; margin-top: 80px; }
.slide { position: absolute; top: 0; left: 0; width: 100%; height: 100%; opacity: 0; transition: opacity 1s ease; background-size: cover; background-position: center; display: flex; align-items: center; }
.slide.active { opacity: 1; }
.slide-content { max-width: 1200px; margin: 0 auto; padding: 0 40px; width: 100%; }
.slide-title { font-size: 42px; font-weight: 700; color: #fff; text-shadow: 2px 2px 4px rgba(0,0,0,0.3); margin-bottom: 15px; animation: fadeInUp 0.8s ease; }
.slide-desc { font-size: 18px; color: rgba(255,255,255,0.9); text-shadow: 1px 1px 2px rgba(0,0,0,0.3); margin-bottom: 25px; animation: fadeInUp 0.8s ease 0.2s both; }
.slider-btn { display: inline-block; padding: 12px 35px; background: linear-gradient(135deg, var(--primary-color), var(--secondary-color)); color: #fff; border-radius: 30px; font-size: 16px; font-weight: 500; transition: var(--transition); animation: fadeInUp 0.8s ease 0.4s both; border: none; cursor: pointer; }
.slider-btn:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(26,115,232,0.4); }
.slider-controls { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; }
.slider-dot { width: 12px; height: 12px; border-radius: 50%; background: rgba(255,255,255,0.5); border: none; cursor: pointer; transition: var(--transition); }
.slider-dot.active { background: #fff; transform: scale(1.2); }
.slider-arrow { position: absolute; top: 50%; transform: translateY(-50%); width: 50px; height: 50px; background: rgba(255,255,255,0.2); border: none; border-radius: 50%; color: #fff; font-size: 20px; cursor: pointer; transition: var(--transition); backdrop-filter: blur(5px); }
.slider-arrow:hover { background: rgba(255,255,255,0.3); }
.slider-arrow.prev { left: 30px; }
.slider-arrow.next { right: 30px; }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }

/* 产品中心 */
.products-section { background: var(--bg-light); }
.products-slider { position: relative; overflow: hidden; padding: 20px 0; }
.products-track {
    display: flex;
    gap: 30px;
    padding: 12px 0 18px;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    scrollbar-width: none;
    -ms-overflow-style: none;
}
.products-track::-webkit-scrollbar { display: none; }
.products-track .product-card { scroll-snap-align: start; }
.product-card { flex: 0 0 calc(33.333% - 20px); background: #fff; border-radius: 12px; overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition); }
.product-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.product-img { position: relative; height: 220px; overflow: hidden; background: #f0f0f0; }
.product-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.product-card:hover .product-img img { transform: scale(1.1); }
.img-tip { position: absolute; right: 8px; bottom: 8px; z-index: 2; padding: 3px 10px; border-radius: 12px; background: rgba(0,0,0,0.55); color: #fff; font-size: 12px; line-height: 1.6; white-space: nowrap; opacity: 0; visibility: hidden; transition: opacity 0.3s ease, visibility 0.3s ease; pointer-events: none; }
.product-img:hover .img-tip, .product-main-image:hover .img-tip, .about-image:hover .img-tip, .brand-card-img:hover .img-tip { opacity: 1; visibility: visible; }
.product-info { padding: 20px; text-align: center; }
.product-name { font-size: 18px; font-weight: 600; color: var(--text-dark); margin-bottom: 10px; }
.product-desc { font-size: 14px; color: var(--text-gray); margin-bottom: 15px; }
.btn-outline { display: inline-block; padding: 8px 25px; border: 2px solid var(--primary-color); color: var(--primary-color); border-radius: 25px; font-size: 14px; transition: var(--transition); }
.btn-outline:hover { background: var(--primary-color); color: #fff; }
.product-arrow { position: absolute; top: 50%; transform: translateY(-50%); width: 45px; height: 45px; background: #fff; border: none; border-radius: 50%; box-shadow: var(--shadow-md); cursor: pointer; z-index: 10; transition: var(--transition); display: flex; align-items: center; justify-content: center; font-size: 18px; color: var(--text-dark); }
.product-arrow:hover { background: var(--primary-color); color: #fff; }
.product-arrow.prev { left: 0; }
.product-arrow.next { right: 0; }

/* 解决方案 - 带背景图 */
.solutions-section { 
    position: relative; 
    padding: 80px 0;
    background: url('https://images.unsplash.com/photo-1451187580459-43490279c0fa?w=1920&q=80') center/cover no-repeat;
    background-attachment: fixed;
}
.solutions-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(26,115,232,0.92) 0%, rgba(13,71,161,0.95) 100%);
}
.solutions-section .container { position: relative; z-index: 1; }
.solutions-section .section-title { color: #fff; }
.solutions-section .section-title::after { background: linear-gradient(90deg, #fff, rgba(255,255,255,0.5)); }
.solutions-section .section-subtitle { color: rgba(255,255,255,0.8); }

.solutions-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.solution-card { background: rgba(255,255,255,0.95); border-radius: 12px; padding: 26px 24px; box-shadow: var(--shadow-sm); transition: var(--transition); position: relative; overflow: hidden; backdrop-filter: blur(10px); display: flex; flex-direction: column; }
.solution-card::before { content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 0; background: linear-gradient(180deg, var(--primary-color), var(--secondary-color)); transition: height 0.3s ease; }
.solution-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.solution-card:hover::before { height: 100%; }
.solution-icon { width: 64px; height: 64px; background: linear-gradient(135deg, rgba(26,115,232,0.1), rgba(0,188,212,0.1)); border-radius: 16px; display: flex; align-items: center; justify-content: center; margin-bottom: 18px; transition: var(--transition); }
.solution-icon i { font-size: 28px; color: var(--primary-color); }
.solution-card:hover .solution-icon { background: linear-gradient(135deg, var(--primary-color), var(--secondary-color)); }
.solution-card:hover .solution-icon i { color: #fff; }
.solution-name { font-size: 17px; font-weight: 600; color: var(--text-dark); margin-bottom: 10px; line-height: 1.4; }
.solution-summary { font-size: 13.5px; color: var(--text-gray); line-height: 1.65; margin-bottom: 16px; }
.solution-card .btn-link { margin-top: auto; }
.btn-link { display: inline-flex; align-items: center; gap: 8px; color: var(--primary-color); font-size: 14px; font-weight: 500; transition: var(--transition); }
.btn-link:hover { gap: 12px; color: var(--primary-dark); }

/* 新闻中心 */
.news-section { background: var(--bg-light); }
.news-content { display: grid; grid-template-columns: 60% 40%; gap: 40px; }
.news-main { display: block; text-decoration: none; color: inherit; background: #fff; border-radius: 12px; overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition); }
.news-main:hover { box-shadow: var(--shadow-md); }
.news-main-img { height: 300px; overflow: hidden; }
.news-main-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.news-main:hover .news-main-img img { transform: scale(1.05); }
.news-main-info { padding: 20px; }
.news-main-title { font-size: 20px; font-weight: 600; color: var(--text-dark); margin-bottom: 12px; transition: color 0.3s ease; }
.news-main:hover .news-main-title { color: var(--primary-color); }
.news-main-desc { font-size: 14px; color: var(--text-gray); line-height: 1.6; margin-bottom: 12px; }
.news-date { font-size: 13px; color: var(--text-light); display: flex; align-items: center; gap: 5px; }
.news-list { display: flex; flex-direction: column; gap: 20px; }
.news-item { display: flex; text-decoration: none; color: inherit; gap: 15px; background: #fff; border-radius: 10px; overflow: hidden; padding: 15px; box-shadow: var(--shadow-sm); transition: var(--transition); }
.news-item:hover { box-shadow: var(--shadow-md); transform: translateX(5px); }
.news-item-img { width: 150px; height: 110px; border-radius: 8px; overflow: hidden; flex-shrink: 0; }
.news-item-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.news-item:hover .news-item-img img { transform: scale(1.1); }
.news-item-info { display: flex; flex-direction: column; justify-content: center; }
.news-item-title { font-size: 15px; font-weight: 500; color: var(--text-dark); margin-bottom: 8px; transition: color 0.3s ease; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-item:hover .news-item-title { color: var(--primary-color); }

/* 底部 */
.footer { background: #e8ebef; color: #333; padding-top: 60px; }
.footer-content { display: grid; grid-template-columns: 1fr 1fr 1fr 300px; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(0,0,0,0.09); }
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; }
.footer-logo img { height: 45px; }
.footer-desc { font-size: 14px; color: #555; line-height: 1.8; }
.footer-title { font-size: 18px; font-weight: 600; margin-bottom: 25px; position: relative; padding-bottom: 10px; }
.footer-title::after { content: ''; position: absolute; bottom: 0; left: 0; width: 30px; height: 2px; background: var(--primary-color); }
.footer-links li { margin-bottom: 12px; }
.footer-links a { color: #555; font-size: 14px; transition: var(--transition); }
.footer-links a:hover { color: var(--primary-color); padding-left: 5px; }
.footer-contact p { display: flex; align-items: flex-start; gap: 10px; color: #555; font-size: 14px; margin-bottom: 12px; }
.footer-contact p span { flex: 1; min-width: 0; line-height: 1.7; }
.footer-contact i { color: var(--primary-color); }
.footer-qr { text-align: center; }
.footer-qr h4 { font-size: 16px; margin-bottom: 15px; color: #333; }
.qr-codes { display: flex; gap: 20px; justify-content: center; }
.qr-item { text-align: center; }
.qr-item img { width: 100px; height: 100px; border-radius: 8px; background: #fff; padding: 5px; margin-bottom: 8px; transition: transform 0.3s ease, box-shadow 0.3s ease; cursor: pointer; }
.qr-item img:hover { transform: scale(1.25); box-shadow: 0 4px 12px rgba(0,0,0,0.25); }
.qr-item p { font-size: 12px; color: #666; }
.footer-bottom { padding: 20px 0; text-align: center; font-size: 13px; color: #888; }
.footer-bottom a { color: #666; }
.footer-bottom a:hover { color: var(--primary-color); }

/* 右侧浮动工具栏 */
.side-toolbar { position: fixed; right: 20px; top: 50%; transform: translateY(-50%); z-index: 999; display: flex; flex-direction: column; gap: 10px; }
.side-tool-item { position: relative; width: 50px; height: 50px; background: #fff; border-radius: 8px; box-shadow: var(--shadow-md); display: flex; align-items: center; justify-content: center; cursor: pointer; transition: var(--transition); }
.side-tool-item:hover { background: var(--primary-color); color: #fff; transform: scale(1.1); }
.side-tool-item i { font-size: 20px; color: var(--text-dark); transition: var(--transition); }
.side-tool-item:hover i { color: #fff; }
.side-tool-tooltip { position: absolute; right: 60px; top: 50%; transform: translateY(-50%); background: #fff; border-radius: 8px; box-shadow: var(--shadow-lg); padding: 15px; opacity: 0; visibility: hidden; transition: var(--transition); white-space: nowrap; color: var(--text-dark); }
.side-tool-item:hover .side-tool-tooltip { opacity: 1; visibility: visible; right: 60px; }
.side-tool-tooltip::after { content: ''; position: absolute; right: -8px; top: 50%; transform: translateY(-50%); border: 8px solid transparent; border-left-color: #fff; }

.tooltip-wechat { width: 150px; text-align: center; }
.tooltip-wechat img { width: 120px; height: 120px; margin: 0 auto 10px; border-radius: 4px; }
.tooltip-wechat p { font-size: 12px; color: var(--text-gray); }

.tooltip-contact p { margin: 0; font-size: 13px; line-height: 1.8; color: var(--text-dark); }
.tooltip-contact .tooltip-title { font-size: 14px; font-weight: 700; margin-bottom: 4px; }

/* 页面横幅 - 实景图 */
.page-banner { height: 300px; background-size: cover; background-position: center; display: flex; align-items: center; justify-content: center; margin-top: 80px; position: relative; }
.page-banner::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: linear-gradient(135deg, rgba(26,115,232,0.85) 0%, rgba(13,71,161,0.9) 100%); }
.page-banner h1 { font-size: 42px; font-weight: 700; color: #fff; position: relative; z-index: 1; }
.page-banner p { font-size: 18px; color: rgba(255,255,255,0.8); position: relative; z-index: 1; margin-top: 10px; }
.breadcrumb { padding: 20px 0; background: var(--bg-light); font-size: 14px; color: var(--text-gray); }
.breadcrumb a { color: var(--primary-color); }
.breadcrumb span { margin: 0 10px; }

/* 产品详情页 */
.product-detail { padding: 60px 0; }
.product-detail-content { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: start; }
.product-gallery { border-radius: 12px; overflow: hidden; box-shadow: var(--shadow-md); }
.product-main-image { position: relative; width: 100%; height: 400px; overflow: hidden; background: #f0f0f0; }
.product-main-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.product-main-image:hover img { transform: scale(1.05); }
.product-intro h2 { font-size: 28px; font-weight: 700; color: var(--text-dark); margin-bottom: 20px; }
.product-intro .desc { font-size: 15px; color: var(--text-gray); line-height: 1.8; margin-bottom: 25px; }
.product-specs { margin-bottom: 30px; }
.product-specs h3 { font-size: 18px; font-weight: 600; color: var(--text-dark); margin-bottom: 15px; padding-bottom: 10px; border-bottom: 2px solid var(--primary-color); }
.spec-item { display: flex; padding: 12px 0; border-bottom: 1px solid #eee; }
.spec-item span:first-child { width: 120px; color: var(--text-gray); font-weight: 500; }
.spec-item span:last-child { color: var(--text-dark); }
.product-actions { display: flex; gap: 15px; margin-top: 30px; }
.btn-primary { display: inline-block; padding: 12px 35px; background: linear-gradient(135deg, var(--primary-color), var(--secondary-color)); color: #fff; border-radius: 30px; font-size: 16px; font-weight: 500; transition: var(--transition); border: none; cursor: pointer; }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(26,115,232,0.4); }

/* 产品介绍文章 */
.product-article { padding: 60px 0; background: var(--bg-light); }
.article-content { background: #fff; border-radius: 12px; padding: 40px; box-shadow: var(--shadow-sm); line-height: 2; }
.article-content h3 { font-size: 22px; color: var(--text-dark); margin: 30px 0 15px; }
.article-content h3:first-child { margin-top: 0; }
.article-content p { font-size: 15px; color: var(--text-gray); margin-bottom: 15px; text-indent: 2em; }

/* 解决方案详情页 */
.solution-detail { padding: 60px 0; }
.solution-header { text-align: center; margin-bottom: 50px; }
.solution-header h1 { font-size: 36px; font-weight: 700; color: var(--text-dark); margin-bottom: 15px; }
.solution-header p { font-size: 16px; color: var(--text-gray); max-width: 700px; margin: 0 auto; }
.solution-article { background: #fff; border-radius: 12px; padding: 40px; box-shadow: var(--shadow-sm); line-height: 2; }
.solution-article h3 { font-size: 22px; color: var(--text-dark); margin: 30px 0 15px; }
.solution-article h3:first-child { margin-top: 0; }
.solution-article p { font-size: 15px; color: var(--text-gray); margin-bottom: 15px; text-indent: 2em; }

/* 新闻中心页面 */
.news-page { padding: 60px 0; }
.news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.news-card { display: block; text-decoration: none; color: inherit; background: #fff; border-radius: 12px; overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition); }
.news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.news-card-img { height: 200px; overflow: hidden; }
.news-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.news-card:hover .news-card-img img { transform: scale(1.08); }
.news-card-info { padding: 20px; }
.news-card-title { font-size: 17px; font-weight: 600; color: var(--text-dark); margin-bottom: 10px; transition: color 0.3s ease; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card:hover .news-card-title { color: var(--primary-color); }
.news-card-desc { font-size: 14px; color: var(--text-gray); line-height: 1.6; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card-time { font-size: 13px; color: var(--text-light); }
.news-card.no-image .news-card-info { padding: 25px; }
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 50px; }
.pagination a, .pagination span { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 8px; background: #fff; color: var(--text-dark); font-size: 14px; box-shadow: var(--shadow-sm); transition: var(--transition); }
.pagination a:hover, .pagination span.active { background: var(--primary-color); color: #fff; }

/* 新闻详情页 */
.article-section { padding: 60px 0; }
.article { max-width: 880px; margin: 0 auto; background: #fff; border-radius: 14px; box-shadow: var(--shadow-sm); padding: 42px 46px; }
.article-meta { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; padding-bottom: 20px; margin-bottom: 26px; border-bottom: 1px solid #eef0f3; font-size: 14px; color: var(--text-gray); }
.article-meta .article-date { display: inline-flex; align-items: center; gap: 6px; }
.article-cat { display: inline-block; padding: 3px 13px; border-radius: 20px; background: #eef4fb; color: var(--primary-color); font-size: 13px; }
.article-title { font-size: 28px; font-weight: 700; color: var(--text-dark); line-height: 1.45; margin-bottom: 22px; }
.article-cover { border-radius: 10px; overflow: hidden; margin-bottom: 30px; }
.article-cover img { width: 100%; height: auto; display: block; }
.article-body { font-size: 15.5px; line-height: 1.95; color: var(--text-gray); }
.article-body p { margin-bottom: 18px; }
.article-body h2 { font-size: 20px; font-weight: 600; color: var(--text-dark); margin: 32px 0 16px; }
.article-body ul { margin: 0 0 18px 22px; }
.article-body li { margin-bottom: 9px; }
.article-body blockquote { margin: 22px 0; padding: 16px 22px; background: #f6f8fb; border-left: 4px solid var(--primary-color); border-radius: 6px; color: var(--text-dark); }
.article-foot { margin-top: 38px; padding-top: 24px; border-top: 1px solid #eef0f3; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 14px; }
.article-back { display: inline-flex; align-items: center; gap: 8px; color: var(--primary-color); font-size: 15px; font-weight: 500; transition: var(--transition); }
.article-back:hover { gap: 12px; }
.article-qrcodes { margin-top: 34px; padding-top: 26px; border-top: 1px solid #eef0f3; }
.article-qrcodes h3 { font-size: 17px; font-weight: 600; color: var(--text-dark); text-align: center; margin-bottom: 20px; }
.article-qr-list { display: flex; justify-content: center; gap: 46px; flex-wrap: wrap; }
.article-qr { text-align: center; }
.article-qr img { display: block; width: 118px; height: 118px; object-fit: contain; background: #fff; border: 1px solid #eef0f3; border-radius: 10px; padding: 8px; margin: 0 auto; }
.article-qr p { font-size: 13px; color: var(--text-gray); margin-top: 10px; }

/* 关于我们 */
.about-intro { padding: 60px 0; }
.about-content { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.about-text h2 { font-size: 32px; font-weight: 700; color: var(--text-dark); margin-bottom: 20px; }
.about-text p { font-size: 15px; color: var(--text-gray); line-height: 1.9; margin-bottom: 15px; text-indent: 2em; }
.about-image { position: relative; border-radius: 16px; overflow: hidden; box-shadow: var(--shadow-lg); }
.about-image img { width: 100%; height: auto; transition: transform 0.5s ease; }
.about-image:hover img { transform: scale(1.03); }

.advantages-section { padding: 60px 0; background: var(--bg-light); }
.advantages-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; text-align: center; }
.advantage-item { padding: 30px; background: #fff; border-radius: 12px; box-shadow: var(--shadow-sm); transition: var(--transition); }
.advantage-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.advantage-icon { position: relative; width: 74px; height: 74px; border-radius: 22px; display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; overflow: hidden; transition: var(--transition); }
.advantage-icon i { position: relative; z-index: 2; font-size: 30px; color: #fff; }
.advantage-icon::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(255,255,255,0.3), rgba(255,255,255,0) 58%); pointer-events: none; }
.advantage-icon.adv-blue { background: linear-gradient(135deg, #5aa9ff, #1a73e8); box-shadow: 0 10px 22px rgba(26,115,232,0.30); }
.advantage-icon.adv-green { background: linear-gradient(135deg, #5fdd8c, #16a34a); box-shadow: 0 10px 22px rgba(22,163,74,0.28); }
.advantage-icon.adv-orange { background: linear-gradient(135deg, #ffc247, #f97316); box-shadow: 0 10px 22px rgba(249,115,22,0.28); }
.advantage-icon.adv-purple { background: linear-gradient(135deg, #b18cff, #7c3aed); box-shadow: 0 10px 22px rgba(124,58,237,0.28); }
.advantage-item:hover .advantage-icon { transform: translateY(-4px) scale(1.05); }
.advantage-item h4 { font-size: 18px; color: var(--text-dark); margin-bottom: 8px; }
.advantage-item p { font-size: 14px; color: var(--text-gray); }

.contact-section { padding: 60px 0; background: var(--bg-light); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.contact-info h3 { font-size: 24px; font-weight: 700; color: var(--text-dark); margin-bottom: 30px; }
.contact-info-wide { grid-column: 1 / -1; width: 100%; display: flex; flex-wrap: wrap; gap: 25px; }
.contact-info-wide h3 { width: 100%; margin-bottom: 30px; }
.contact-info-wide .contact-item { flex: 1; min-width: 220px; max-width: 280px; margin-bottom: 0; }
.contact-item { display: flex; gap: 15px; margin-bottom: 25px; }
.contact-item i { width: 50px; height: 50px; background: linear-gradient(135deg, rgba(26,115,232,0.1), rgba(0,188,212,0.1)); border-radius: 12px; display: flex; align-items: center; justify-content: center; color: var(--primary-color); font-size: 20px; flex-shrink: 0; }
.contact-item-text h4 { font-size: 16px; font-weight: 600; color: var(--text-dark); margin-bottom: 5px; }
.contact-item-text p { font-size: 14px; color: var(--text-gray); transition: color 0.3s ease; }
.contact-item-text p:hover { color: var(--primary-color); }
.contact-form { background: #fff; border-radius: 16px; padding: 40px; box-shadow: var(--shadow-md); }
.contact-form h3 { font-size: 24px; font-weight: 700; color: var(--text-dark); margin-bottom: 30px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 500; color: var(--text-dark); margin-bottom: 8px; }
.form-group input, .form-group textarea { width: 100%; padding: 12px 16px; border: 1px solid #e0e0e0; border-radius: 8px; font-size: 14px; transition: var(--transition); font-family: inherit; }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--primary-color); box-shadow: 0 0 0 3px rgba(26,115,232,0.1); }
.form-group textarea { height: 120px; resize: vertical; }
.form-submit { width: 100%; padding: 14px; background: linear-gradient(135deg, var(--primary-color), var(--secondary-color)); color: #fff; border: none; border-radius: 8px; font-size: 16px; font-weight: 500; cursor: pointer; transition: var(--transition); }
.form-submit:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(26,115,232,0.3); }

/* 动画 */
.fade-in { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* 响应式 */
@media (max-width: 1100px) {
    .solutions-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 1024px) {
    .nav-menu { display: none; position: absolute; top: 100%; left: 0; right: 0; margin: 0; background: #fff; flex-direction: column; padding: 6px 12px 12px; box-shadow: 0 14px 28px rgba(0,0,0,0.12); border-radius: 0 0 16px 16px; max-height: calc(100vh - 120px); overflow-y: auto; -webkit-overflow-scrolling: touch; }
    .nav-menu.active { display: flex; }
    .menu-toggle { display: flex; }
    /* 移动端菜单项：分隔线 + 更大的点击区域 + 展开态高亮 */
    .nav-menu > .nav-item { border-bottom: 1px solid rgba(0,0,0,0.06); flex-shrink: 0; }
    .nav-menu > .nav-item:last-child { border-bottom: none; }
    .nav-menu > .nav-item > a { align-items: center; justify-content: space-between; padding: 14px 10px; font-size: 15.5px; border-radius: 8px; }
    .nav-menu > .nav-item > a:active { background: rgba(26,115,232,0.06); }
    .nav-menu > .nav-item.open > a { color: var(--primary-color); }
    .nav-menu .dropdown li a { display: block; }
    body.nav-open { overflow: hidden; }
    .product-card { flex: 0 0 calc(50% - 15px); }
    .solutions-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .news-content { grid-template-columns: 1fr; }
    .footer-content { grid-template-columns: repeat(2, 1fr); }
    .product-detail-content { grid-template-columns: 1fr; }
    .about-content { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .advantages-grid { grid-template-columns: repeat(2, 1fr); }
    /* 移动端：下拉转为内联折叠，点击一级展开二级 */
    .nav-menu .dropdown { display: none; position: static; transform: none !important; left: auto !important; opacity: 1; visibility: visible; box-shadow: none; min-width: 0; margin: 0; padding: 0 0 6px 20px; background: transparent; border-radius: 0; border-left: 2px solid rgba(26,115,232,0.2); }
    .nav-menu .nav-item.open > .dropdown { display: block; }
    .nav-menu .nav-item.open > .dropdown li { display: list-item; list-style: none; margin: 0; }
    .nav-menu .nav-item.open > .dropdown li a { display: block; padding: 10px 12px; font-size: 14px; color: var(--text-dark); white-space: nowrap; opacity: 1; visibility: visible; }
    .nav-menu .nav-item.open > a i { transform: rotate(180deg); }
    .nav-menu .dropdown::before { display: none; }
    .nav-menu .dropdown-sub { display: none; position: static; transform: none; opacity: 1; visibility: visible; box-shadow: none; min-width: 0; padding: 0 0 6px 18px; background: transparent; border-radius: 0; }
    .nav-menu .cat.open > .dropdown-sub { display: block; }
    .nav-menu .dropdown .cat { background: transparent; }
    .nav-menu .dropdown .cat > a { justify-content: flex-start; gap: 8px; }
    .nav-menu .dropdown .cat > a i { transform: rotate(90deg); transition: var(--transition); }
    .nav-menu .dropdown .cat.open > a i { transform: rotate(-90deg); }
    .nav-menu .dropdown .dropdown li a, .nav-menu .dropdown-sub li a { padding: 8px 12px; }
}
@media (max-width: 768px) {
    .section { padding: 50px 0; }
    .article { padding: 28px 22px; }
    .article-title { font-size: 22px; }
    .article-body { font-size: 15px; }
    .article-qr-list { gap: 26px; }
    .article-qr img { width: 96px; height: 96px; }
    .section-title { font-size: 26px; }
    .hero-slider { height: 350px; }
    .slide-title { font-size: 28px; }
    .slide-desc { font-size: 15px; margin-bottom: 20px; }
    /* 给左右箭头留位，避免文字被箭头压住 */
    .slide-content { padding: 0 58px; }
    .slider-arrow { width: 38px; height: 38px; font-size: 16px; }
    .slider-arrow.prev { left: 12px; }
    .slider-arrow.next { right: 12px; }
    .product-card { flex: 0 0 100%; }
    .solutions-grid { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    /* 页脚：logo 与「关注我们」各占一整行，中部「产品中心/快速链接」两列并排 */
    .footer-content { grid-template-columns: 1fr 1fr; gap: 32px 16px; padding-bottom: 32px; text-align: center; }
    .footer-content .footer-col:nth-child(1),
    .footer-content .footer-col:nth-child(4) { grid-column: 1 / -1; }
    .footer-logo { justify-content: center; }
    .footer-logo img { height: 40px; }
    .footer-desc { max-width: 300px; margin: 0 auto; font-size: 13px; line-height: 1.7; }
    .footer-title { font-size: 16px; margin-bottom: 18px; }
    .footer-title::after { left: 50%; transform: translateX(-50%); }
    .footer-links li { margin-bottom: 9px; }
    .footer-links a { font-size: 13.5px; }
    .qr-codes { gap: 24px; }
    .footer-contact { display: inline-block; text-align: left; }
    .footer-contact p { justify-content: flex-start; font-size: 13px; margin-bottom: 10px; }
    .footer-bottom { font-size: 12px; line-height: 1.9; padding: 18px 0; }
    .footer-bottom a { display: inline-block; }
    .side-toolbar { right: 6px; gap: 8px; }
    .side-tool-item { width: 40px; height: 40px; }
    .side-tool-item i { font-size: 17px; }
    .side-tool-tooltip { right: 50px; padding: 12px; font-size: 13px; }
    .page-banner { height: 200px; }
    .page-banner h1 { font-size: 30px; }
    .advantages-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
    .header-main .container { padding: 10px 15px; }
    .logo-text { font-size: 18px; }
    .hero-slider { height: 300px; margin-top: 80px; }
    .slide-title { font-size: 22px; }
    .slide-desc { font-size: 14px; }
    .slide-content { padding: 0 50px; }
    .product-card { flex: 0 0 100%; }
    .footer-content { gap: 28px 12px; }
    .footer-links a { font-size: 13px; }
    .footer-title { font-size: 15px; margin-bottom: 16px; }
    .qr-item img { width: 92px; height: 92px; }
    .footer-bottom { font-size: 11.5px; }
}

/* ===== 一级栏目页：左侧栏目列表 + 右侧产品 ===== */
.cat-section { padding-bottom: 80px; background: var(--bg-light); }
.cat-wrap { display: flex; align-items: flex-start; gap: 30px; padding-top: 40px; }
.cat-sidebar { flex: 0 0 240px; position: sticky; top: 90px; background: #fff; border-radius: 12px; box-shadow: var(--shadow-sm); overflow: hidden; }
.cat-sidebar-title { margin: 0; padding: 18px 20px; font-size: 17px; font-weight: 600; color: #fff; background: linear-gradient(135deg, var(--primary-color), var(--primary-dark)); }
.cat-nav { list-style: none; margin: 0; padding: 8px 0; }
.cat-nav a { display: flex; align-items: center; justify-content: space-between; padding: 14px 20px; font-size: 15px; color: var(--text-dark); border-left: 3px solid transparent; transition: var(--transition); }
.cat-nav a i { font-size: 12px; color: var(--text-gray); transition: var(--transition); }
.cat-nav a:hover { background: var(--bg-light); color: var(--primary-color); padding-left: 24px; }
.cat-nav a:hover i { color: var(--primary-color); }
.cat-nav a.active { background: rgba(26,115,232,0.08); color: var(--primary-color); font-weight: 600; border-left-color: var(--primary-color); }
.cat-nav a.active i { color: var(--primary-color); }
.cat-main { flex: 1; min-width: 0; }
.cat-main-head { padding: 6px 0 24px; }
.cat-main-head h2 { font-size: 26px; font-weight: 700; color: var(--text-dark); margin: 0 0 10px; }
.cat-main-head p { font-size: 15px; color: var(--text-gray); margin: 0; }
.cat-products { display: grid; gap: 24px; margin-bottom: 12px; }
.cat-products.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cat-products.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cat-products.cols-1 { display: flex; justify-content: center; }
.cat-products.cols-1 .product-card { width: 480px; max-width: 100%; }
.cat-products .product-card { flex: 0 0 auto; }
.cat-solution-box { margin-top: 36px; padding: 26px 30px; display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; background: linear-gradient(135deg, rgba(26,115,232,0.06), rgba(13,71,161,0.1)); border: 1px solid rgba(26,115,232,0.18); border-radius: 12px; }
.cat-solution-box h3 { font-size: 19px; color: var(--text-dark); margin: 0 0 6px; }
.cat-solution-box p { font-size: 14px; color: var(--text-gray); margin: 0; }
.cat-solution-box .btn-outline { border-color: var(--primary-color); }

@media (max-width: 992px) {
    .cat-wrap { flex-direction: column; }
    .cat-sidebar { flex: none; width: 100%; position: static; }
    .cat-nav { display: grid; grid-template-columns: repeat(2, 1fr); gap: 4px; }
    .cat-products.cols-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    .cat-nav { grid-template-columns: 1fr; }
    .cat-products.cols-3, .cat-products.cols-2 { grid-template-columns: 1fr; }
}


/* ===== Multi-language switcher ===== */
.lang-switch { position: relative; margin-left: 10px; flex-shrink: 0; transform: translateX(32px); }
.lang-switch-btn { display: flex; align-items: center; gap: 6px; background: none; border: 1px solid #e3e8ee; border-radius: 20px; padding: 6px 12px; font-family: inherit; font-size: 13px; color: var(--text-dark); cursor: pointer; transition: var(--transition); }
.lang-switch-btn:hover { border-color: var(--primary-color); color: var(--primary-color); }
.lang-switch-btn .fa-globe { color: var(--primary-color); font-size: 13px; }
.lang-switch-btn .fa-chevron-down { font-size: 10px; color: var(--text-light); transition: transform .3s ease; }
.lang-switch.open .lang-switch-btn { border-color: var(--primary-color); }
.lang-switch.open .lang-switch-btn .fa-chevron-down { transform: rotate(180deg); }
.lang-switch-menu { position: absolute; top: calc(100% + 12px); right: 0; left: auto; min-width: 150px; margin: 0; padding: 6px; list-style: none; background: #fff; border: 1px solid #eee; border-radius: 10px; box-shadow: var(--shadow-md); opacity: 0; visibility: hidden; transform: translateY(-6px); transition: var(--transition); z-index: 300; }
.lang-switch.open .lang-switch-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-switch-menu li { margin: 0; }
.lang-switch-menu li a, .lang-switch-menu li span { display: block; padding: 8px 14px; border-radius: 6px; font-size: 13px; color: var(--text-dark); white-space: nowrap; text-align: left; }
.lang-switch-menu li a:hover { background: var(--bg-light); color: var(--primary-color); }
.lang-switch-menu li span.active { color: var(--primary-color); font-weight: 600; }

html[lang="en"] body, html[lang="fr"] body, html[lang="de"] body, html[lang="es"] body { font-family: 'Segoe UI', 'Helvetica Neue', Arial, 'Microsoft YaHei', sans-serif; }
html[lang="zh-Hant"] body { font-family: 'Microsoft JhengHei', 'PingFang TC', 'Noto Sans TC', 'Microsoft YaHei', sans-serif; }
html[lang="ko"] body { font-family: 'Malgun Gothic', 'Apple SD Gothic Neo', 'Noto Sans KR', 'Microsoft YaHei', sans-serif; }
html[lang="ar"] body { font-family: 'Segoe UI', Tahoma, 'Noto Naskh Arabic', 'Noto Sans Arabic', sans-serif; }

/* RTL mirroring */
html[dir="rtl"] .lang-switch-menu { right: auto; left: 0; }
html[dir="rtl"] .lang-switch-menu li a, html[dir="rtl"] .lang-switch-menu li span { text-align: right; }
html[dir="rtl"] .dropdown-sub { left: auto; right: 100%; }
html[dir="rtl"] .cat-nav a i, html[dir="rtl"] .cat-nav a { justify-content: space-between; }
html[dir="rtl"] .dropdown li a:hover { padding-left: 25px; padding-right: 30px; }

@media (max-width: 1024px) {
    .lang-switch { margin-left: auto; transform: none; }
    .lang-switch-btn { padding: 5px 10px; font-size: 12px; }
}
@media (max-width: 480px) {
    .lang-current { max-width: 60px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
}

/* 立即咨询弹窗 */
.consult-modal { position: fixed; inset: 0; z-index: 9999; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: opacity 0.25s ease, visibility 0.25s ease; }
.consult-modal.show { opacity: 1; visibility: visible; }
.consult-modal-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.45); }
.consult-modal-box { position: relative; background: #fff; padding: 35px 30px; border-radius: 16px; max-width: 360px; width: 90%; text-align: center; box-shadow: 0 15px 40px rgba(0,0,0,0.15); transform: translateY(10px); transition: transform 0.25s ease; }
.consult-modal.show .consult-modal-box { transform: translateY(0); }
.consult-modal-box h3 { margin-bottom: 25px; font-size: 22px; color: #333; }
.consult-modal-x { position: absolute; top: 12px; right: 16px; background: none; border: none; font-size: 24px; color: #999; cursor: pointer; }
.consult-modal-x:hover { color: #333; }
.consult-list { list-style: none; padding: 0; margin: 0; }
.consult-list li { display: flex; align-items: center; justify-content: center; gap: 12px; margin-bottom: 16px; color: #555; font-size: 15px; }
.consult-list li:last-child { margin-bottom: 0; flex-direction: column; gap: 8px; }
.consult-list li i { color: var(--primary-color); font-size: 18px; }
.consult-list li img { width: 140px; height: 140px; object-fit: cover; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.08); }

@media (max-width: 1024px) {
    .contact-info-wide { gap: 20px; }
    .contact-info-wide .contact-item { min-width: calc(50% - 10px); max-width: none; }
}
@media (max-width: 640px) {
    .contact-info-wide .contact-item { min-width: 100%; }
    .consult-modal-box { padding: 28px 22px; }
}

/* 轮播文字可读性优化 */
.slide::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(90deg, rgba(0,0,0,0.42) 0%, rgba(0,0,0,0.22) 45%, rgba(0,0,0,0.05) 100%); z-index: 1; }
html[dir="rtl"] .slide::before { background: linear-gradient(270deg, rgba(0,0,0,0.42) 0%, rgba(0,0,0,0.22) 45%, rgba(0,0,0,0.05) 100%); }
.slide-content { position: relative; z-index: 2; }
.slide-title { text-shadow: 0 2px 10px rgba(0,0,0,0.65); }
.slide-desc { color: rgba(255,255,255,0.96); text-shadow: 0 1px 6px rgba(0,0,0,0.6); }
.solutions-section { scroll-margin-top: 110px; }
html { scroll-behavior: smooth; }

/* 轮播点击修复：非激活slide不拦截指针，激活slide置顶 */
.slide { pointer-events: none; }
.slide.active { opacity: 1; pointer-events: auto; z-index: 2; }
.slider-arrow, .slider-controls { z-index: 10; }

/* ===== 品牌介绍页：功能/产品系列卡片网格 ===== */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; text-align: center; }
.feature-grid .advantage-item p { font-size: 13.5px; line-height: 1.75; }
.feature-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 1024px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px) { .feature-grid, .feature-grid.cols-2 { grid-template-columns: 1fr; } }

/* ===== 品牌介绍：品牌列表卡片（图片+文字） ===== */
.brand-section { padding: 64px 0; }
.brand-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.brand-card { display: flex; flex-direction: column; background: #fff; border-radius: 16px; overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition); position: relative; }
.brand-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.brand-card-img { position: relative; height: 250px; overflow: hidden; background: #f0f0f0; }
.brand-card-img::after { content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 45%; background: linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(0,0,0,0.22) 100%); pointer-events: none; }
.brand-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.brand-card:hover .brand-card-img img { transform: scale(1.08); }
.brand-card-tag { position: absolute; left: 16px; top: 16px; z-index: 2; padding: 6px 14px; border-radius: 20px; background: rgba(26,115,232,0.92); color: #fff; font-size: 13px; line-height: 1.4; box-shadow: 0 2px 8px rgba(13,71,161,0.3); }
.brand-card-body { padding: 26px 28px 28px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.brand-card-name { font-size: 22px; font-weight: 700; color: var(--text-dark); }
.brand-card-name::after { content: ''; display: block; width: 40px; height: 3px; margin-top: 10px; border-radius: 2px; background: linear-gradient(90deg, var(--primary-color), var(--secondary-color)); }
.brand-card-desc { font-size: 14px; color: var(--text-gray); line-height: 1.7; flex: 1; }
.brand-card-link { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; color: var(--primary-color); margin-top: 6px; }
.brand-card-link i { transition: transform 0.3s ease; }
.brand-card:hover .brand-card-link i { transform: translateX(5px); }
@media (max-width: 768px) {
    .brand-grid { grid-template-columns: 1fr; }
    .brand-card-img { height: 210px; }
    .brand-card-body { padding: 22px 22px 24px; }
}
@media (max-width: 480px) {
    .brand-section { padding: 48px 0; }
    .brand-card-name { font-size: 20px; }
}

/* ===== 品牌/产品详情：官方渠道二维码 ===== */
.official-qr-grid { display: flex; justify-content: center; align-items: flex-start; gap: 48px; flex-wrap: wrap; }
.official-qr-item { display: flex; flex-direction: column; align-items: center; gap: 10px; text-align: center; }
a.official-qr-item { cursor: pointer; }
.official-qr-img { width: 168px; height: 168px; border-radius: 14px; overflow: hidden; background: #fff; box-shadow: var(--shadow-sm); display: flex; align-items: center; justify-content: center; padding: 12px; transition: var(--transition); }
.official-qr-img img { width: 100%; height: 100%; object-fit: contain; transition: transform 0.35s ease; }
.official-qr-item:hover .official-qr-img { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.official-qr-item:hover .official-qr-img img { transform: scale(1.12); }
.official-qr-name { font-size: 16px; font-weight: 600; color: var(--text-dark); transition: color 0.3s ease; }
a.official-qr-item:hover .official-qr-name { color: var(--primary-color); }
.official-qr-tip { font-size: 13px; color: var(--text-light); }
@media (max-width: 480px) {
    .official-qr-grid { gap: 28px; }
    .official-qr-img { width: 140px; height: 140px; }
}

/* ===== 品牌介绍页（DREVA 品牌布局） ===== */
.brand-hero { padding: 84px 0 64px; text-align: center; }
.brand-hero-name { font-size: 64px; font-weight: 800; letter-spacing: 0.1em; color: var(--text-dark); margin-bottom: 12px; line-height: 1.1; }
.brand-hero-name span { color: var(--primary-color); }
.brand-hero-sub { font-size: 20px; color: var(--text-gray); letter-spacing: 0.06em; margin-bottom: 30px; }
.brand-hero-divider { width: 60px; height: 3px; background: linear-gradient(90deg, transparent, var(--primary-color), transparent); margin: 0 auto 38px; border-radius: 2px; }
.brand-hero-manifesto { max-width: 720px; margin: 0 auto; font-size: 17px; color: var(--text-gray); line-height: 2; }
.brand-label { text-align: center; font-size: 13px; letter-spacing: 0.22em; color: var(--primary-color); text-transform: uppercase; margin-bottom: 12px; font-weight: 600; }
.brand-letters { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; }
.brand-letter-card { flex: 1; min-width: 130px; max-width: 180px; text-align: center; padding: 36px 14px 30px; border: 1px solid rgba(26,115,232,0.14); border-radius: 16px; background: #fff; box-shadow: var(--shadow-sm); transition: all 0.4s ease; }
.brand-letter-card:hover { border-color: rgba(26,115,232,0.4); box-shadow: var(--shadow-lg); transform: translateY(-6px); }
.brand-letter-char { font-size: 44px; font-weight: 800; color: var(--primary-color); line-height: 1; margin-bottom: 12px; }
.brand-letter-word { font-size: 15px; font-weight: 600; color: var(--text-dark); margin-bottom: 6px; word-break: break-word; }
.brand-letter-cn { font-size: 13px; color: var(--text-gray); line-height: 1.5; }
.brand-story { max-width: 840px; margin: 0 auto; }
.brand-story-title { font-size: 30px; font-weight: 700; color: var(--text-dark); margin-bottom: 36px; text-align: center; }
.brand-story-title span { color: var(--primary-color); }
.brand-story-text { font-size: 15px; color: var(--text-gray); line-height: 2; margin-bottom: 20px; text-indent: 2em; }
.brand-story-text strong { color: var(--text-dark); font-weight: 600; }
.brand-values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; max-width: 960px; margin: 0 auto; }
.brand-value-item { text-align: center; padding: 40px 24px; border-radius: 16px; background: #fff; border: 1px solid rgba(26,115,232,0.14); box-shadow: var(--shadow-sm); transition: all 0.4s ease; }
.brand-value-item:hover { border-color: rgba(26,115,232,0.4); box-shadow: var(--shadow-lg); }
.brand-value-icon { font-size: 38px; color: var(--primary-color); margin-bottom: 18px; }
.brand-value-title { font-size: 18px; font-weight: 600; color: var(--text-dark); margin-bottom: 12px; }
.brand-value-desc { font-size: 14px; color: var(--text-gray); line-height: 1.8; }
.brand-slogan { padding: 84px 0 96px; text-align: center; }
.brand-slogan-cn { font-size: 40px; font-weight: 700; color: var(--text-dark); letter-spacing: 0.06em; margin-bottom: 16px; }
.brand-slogan-en { font-size: 17px; color: var(--text-gray); letter-spacing: 0.08em; margin-bottom: 38px; }
.brand-slogan-divider { width: 80px; height: 2px; background: linear-gradient(90deg, transparent, var(--primary-color), transparent); margin: 0 auto; border-radius: 2px; }
@media (max-width: 768px) {
    .brand-hero { padding: 60px 0 48px; }
    .brand-hero-name { font-size: 44px; }
    .brand-hero-sub { font-size: 16px; }
    .brand-hero-manifesto { font-size: 15px; }
    .brand-letters { gap: 12px; }
    .brand-letter-card { min-width: 100px; max-width: 140px; padding: 24px 10px 20px; border-radius: 12px; }
    .brand-letter-char { font-size: 32px; }
    .brand-story-title { font-size: 24px; }
    .brand-values { grid-template-columns: 1fr; gap: 20px; }
    .brand-slogan { padding: 64px 0 72px; }
    .brand-slogan-cn { font-size: 28px; }
    .brand-slogan-en { font-size: 14px; }
}
@media (max-width: 480px) {
    .brand-hero-name { font-size: 34px; }
    .brand-letter-card { min-width: 92px; max-width: 120px; }
    .brand-letter-char { font-size: 28px; }
    .brand-letter-word { font-size: 12px; }
    .brand-letter-cn { font-size: 11px; }
    .brand-story-text { font-size: 14px; line-height: 1.9; }
    .brand-slogan-cn { font-size: 22px; }
}