/* 从 assets/css/style.css 迁移而来 */
:root{--bg:#0a0c10;--card:#0f1218;--muted:#0c1118;--text:#e6edf3;--sub:#888;--brand:#3ea6ff;--brand-2:#6df;--line:#1c2330;--site-header-height:88px;--product-dropdown-left:0px}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:"Microsoft Yahei",sans-serif;color:var(--text);}
img{max-width:100%;}
a{color:inherit;text-decoration:none}
.container{width:92%; margin: 0 auto;}
.site-header{position:fixed;top:0;left:0;right:0;z-index:50;transition:background .2s ease,color .2s ease,box-shadow .2s ease}
/* 下滑后变为白底黑字（勿对 header/nav 使用常驻 transform:translateY(0)，否则会成为 fixed 下拉的包含块，导致 left 与视口错位） */
.site-header.scrolled{background:#ffffff;color:#444444;backdrop-filter:none;box-shadow:0 8px 20px rgba(0,0,0,.08);animation:headerSlideIn 0.3s ease-out}
.site-header.scrolled .logo,.site-header.scrolled .nav a{color:#444444;transition:color .15s ease}
.site-header.scrolled .nav a.active,.site-header.scrolled .nav a:hover{color:var(--brand)}
.site-header.scrolled .menu-toggle span{background:#444444;transition:background .15s ease}
.site-header.scrolled .nav-container{animation:navFadeIn 0.4s ease-out 0.1s both}
@keyframes headerSlideIn{0%{transform:translateY(-100%);opacity:0}100%{transform:none;opacity:1}}
@keyframes navFadeIn{0%{opacity:0}100%{opacity:1}}
/* 移动端下滑为黑底白字 */
.site-header.m-scrolled{background:rgba(0,0,0,.9);color:#ffffff;border-bottom:1px solid rgba(255,255,255,.08);box-shadow:0 8px 20px rgba(0,0,0,.35);animation:headerSlideIn 0.3s ease-out}
.site-header.m-scrolled .logo,.site-header.m-scrolled .nav a{color:#ffffff;transition:color .15s ease}
.site-header.m-scrolled .nav a.active,.site-header.m-scrolled .nav a:hover{color:#ffffff}
.site-header.m-scrolled .menu-toggle span{background:#ffffff;transition:background .15s ease}
.site-header.m-scrolled .nav-container{animation:navFadeIn 0.4s ease-out 0.1s both}
.nav-container{display:flex;align-items:center;justify-content:space-between;padding:10px 0}
.logo{font-weight:800;letter-spacing:.5px}
.logo-img{height:60px;width:auto;transition:filter .25s}
/* 滚动时切换logo */

.site-header.m-scrolled .logo-img{filter:brightness(0) invert(1)}
.nav{display:flex;gap:56px;align-items:center}
.nav a{opacity:.85;transition:all .15s cubic-bezier(0.4,0,0.2,1);position:relative;padding:8px 0}
.nav a::before{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .15s ease;border-radius:1px}
.nav a.active,.nav a:hover{color:var(--brand);opacity:1}
.nav a.active::before,.nav a:hover::before{width:100%}
.site-header.scrolled .nav a::before{background:linear-gradient(90deg,var(--brand),var(--brand-2))}
/* 下拉菜单样式（PC：贴在整站导航栏下缘，不再紧贴「产品中心」文字） */
.nav-dropdown{position:relative}
.dropdown-menu{position:absolute;top:100%;left:50%;min-width:220px;max-width:min(90vw,320px);margin-top:-1px;background:#ffffff;border:1px solid #e6e8eb;border-radius:0 0 8px 8px;box-shadow:0 8px 24px rgba(0,0,0,.12);opacity:0;visibility:hidden;transform:translate(-50%,-8px);transition:opacity .2s,visibility .2s,transform .2s;z-index:1000;padding:8px 0;overflow:hidden}
.nav-dropdown:hover .dropdown-menu{opacity:1;visibility:visible;transform:translate(-50%,0)}
.dropdown-menu a{display:block;padding:8px 16px;color:#334155;font-size:14px;transition:background .15s;text-align:center}
.dropdown-menu a:hover{background:#f1f5f9;color:var(--brand)}
/* 下拉项也是 .nav a，去掉主导航下划线与小幅位移，仅保留背景高亮 */
.nav .dropdown-menu a::before{display:none!important;content:none!important}
.nav .dropdown-menu a.active::before,.nav .dropdown-menu a:hover::before{width:0!important;display:none!important}
.nav .dropdown-menu a,.nav .dropdown-menu a.active,.nav .dropdown-menu a:hover{transform:none}
.site-header.scrolled .nav .dropdown-menu a:hover,.site-header.scrolled .nav .dropdown-menu a.active,
.site-header.m-scrolled .nav .dropdown-menu a:hover,.site-header.m-scrolled .nav .dropdown-menu a.active{transform:none}
@media (min-width:721px){
  .nav-dropdown::before{
    content:'';
    position:absolute;
    left:50%;
    transform:translateX(-50%);
    top:100%;
    width:min(340px,92vw);
    height:40px;
    z-index:999;
  }
  /* PC：left 由 JS 设为「触发项中心 − 菜单半宽」；top 上移 1px 与导航下缘无缝对接（消除亚像素缝隙） */
  .dropdown-menu{position:fixed;top:calc(var(--site-header-height) - 1px);left:var(--product-dropdown-left);right:auto;margin-top:0;transform:translateY(-8px)}
  .nav-dropdown:hover .dropdown-menu{transform:translateY(0)}
}
/* 滚动状态下的下拉菜单 */
.site-header.scrolled .dropdown-menu{background:#ffffff;border-color:#e6e8eb;border-top:none;box-shadow:0 8px 24px rgba(0,0,0,.12)}
.site-header.scrolled .dropdown-menu a{color:#334155}
.site-header.scrolled .dropdown-menu a:hover{background:#f1f5f9;color:var(--brand)}
.site-header.m-scrolled .dropdown-menu{background:rgba(0,0,0,.95);border-color:rgba(255,255,255,.1);border-top:none;box-shadow:0 8px 24px rgba(0,0,0,.35)}
.site-header.m-scrolled .dropdown-menu a{color:#e2e8f0}
.site-header.m-scrolled .dropdown-menu a:hover{background:rgba(255,255,255,.08);color:#ffffff}
.menu-toggle{display:none;background:none;border:0;width:40px;height:32px;cursor:pointer;position:relative;z-index:100}
.menu-toggle span{display:block;height:2px;background:#fff;margin:6px 0;transition:.25s;width:26px}
/* 展开为X的动画 */
.menu-toggle.active span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.menu-toggle.active span:nth-child(2){opacity:0}
.menu-toggle.active span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
.hero{position:relative;height:100vh;display:grid;place-items:center;overflow:hidden}
.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:brightness(.75) saturate(110%);z-index:1}
.hero-image{position:absolute;inset:0;width:100%;height:100%;background-image:url('../images/hero-poster.jpg');background-size:cover;background-position:center;background-repeat:no-repeat;filter:brightness(.75) saturate(110%);z-index:1;display:none}
.hero-overlay{position:absolute;inset:0;background:rgba(0,0,0,.65);z-index:2}
.hero-content{position:relative;text-align:center;padding:0 16px;z-index:3}
.hero h1{font-size:40px;line-height:2;margin:0 0 14px}
.hero p{color:var(--sub);margin:0 0 40px}
.btn{display:inline-block;border:1px solid #FFF; padding:15px 50px;border-radius:40px;margin:0 10px;font-size:16px;transition:transform .2s, box-shadow .2s, background-color .2s, color .2s, border-color .2s}
.btn:hover{transform:translateY(-2px);border-color:var(--brand)}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#041018;border:0;font-weight:700}
.btn-primary:hover{filter:brightness(1.05);}
.section{padding:30px 0}
.section-muted{background:var(--muted)}
/* 浅色分区（局部白底） */
.section-light{background:#ffffff;color:#444444}
.section-light .contact-form label{color:#334155}
.section-light .contact-form input,.section-light .contact-form textarea{background:#ffffff;color:#444444;border:1px solid #e6e8eb}
/* 核心优势区域 - 深色背景 + 动态效果 */
.section-advantages{background:var(--bg);color:var(--text);position:relative;overflow:hidden}
.section-advantages::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid-advantages" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M 20 0 L 0 0 0 20" fill="none" stroke="rgba(59,130,246,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid-advantages)"/></svg>');opacity:0.3;z-index:0;animation:gridMove 20s linear infinite}
.section-advantages .container{position:relative;z-index:1}
.section-advantages .section-title h2{color:#ffffff}
.section-advantages .section-title p{color:var(--sub)}
@keyframes gridMove{0%{transform:translate(0,0)}100%{transform:translate(20px,20px)}}

/* 渐变背景分区 */
.section-gradient{background:linear-gradient(135deg,#f8fafc,#e2e8f0);color:#444444;position:relative}
.section-gradient::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="rgba(59,130,246,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');opacity:0.6;z-index:0}
.section-gradient .container{position:relative;z-index:1}
.section-gradient .section-title h2{color:#1e293b}
.section-gradient .section-title p{color:#64748b}
h2{font-size:28px;margin:0 0 14px}
.grid-2{display:grid;gap:28px;grid-template-columns:1.2fr .8fr}
.grid-3{display:grid;gap:24px;grid-template-columns:repeat(3,1fr)}
.cards{display:grid;gap:18px;grid-template-columns:repeat(3,1fr)}
.shadow{box-shadow:0 10px 30px rgba(0,0,0,.25)}
.product h3{margin:0 0 8px}
.list-check{padding-left:18px;color:var(--sub)}
.list-check li{margin:6px 0}
.about-card {border-radius:12px}
.about-card img{border-radius:12px}

/* 首页 — 关于我们 */
.home-about{padding:56px 0}
.home-about-inner{display:grid;gap:clamp(32px,5vw,56px);grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);align-items:center}
.home-about-kicker{font-size:13px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--brand);margin:0 0 12px}
.home-about-text h2{font-size:clamp(28px,4vw,36px);color:#444444;margin:0 0 18px;font-weight:700;letter-spacing:-.03em;line-height:1.2}
.home-about-lead{font-size:16px;line-height:1.75;color:var(--sub);margin:0 0 28px;max-width:540px}
.home-about-features{list-style:none;padding:0;margin:0 0 8px;display:flex;flex-direction:column;gap:14px}
.home-about-features li{display:flex;align-items:flex-start;gap:12px;font-size:15px;color:#334155;line-height:1.55}
.home-about-features .fa{flex-shrink:0;width:24px;height:24px;display:inline-flex;align-items:center;justify-content:center;font-size:11px;line-height:1;background:linear-gradient(135deg,rgba(62,166,255,.18),rgba(109,255,255,.14));color:#0369a1;border-radius:8px;margin-top:2px}
.home-about-cta{margin-top:24px;margin-left:0;margin-right:12px}
.home-about-media{position:relative}
.home-about-media-frame{position:relative;border-radius:20px;overflow:hidden;background:#f1f5f9;border:1px solid #e6e8eb;box-shadow:0 20px 48px rgba(15,23,42,.1);transition:transform .35s cubic-bezier(0.4,0,0.2,1),box-shadow .35s ease}
.home-about-media-frame::after{content:'';position:absolute;inset:0;pointer-events:none;border-radius:20px;box-shadow:inset 0 0 0 1px rgba(255,255,255,.45)}
.home-about-media-frame:hover{transform:translateY(-4px);box-shadow:0 28px 56px rgba(15,23,42,.14)}
.home-about-media-frame img{display:block;width:100%;height:auto}
.home-about-media-frame::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--brand),var(--brand-2));z-index:2}

/* 产品中心样式 */
.section-title{text-align:center;margin-bottom:60px;position:relative}
.section-title::after{content:'';position:absolute;bottom:-20px;left:50%;transform:translateX(-50%);width:60px;height:4px;background:linear-gradient(90deg,var(--brand),var(--brand-2));border-radius:2px}
.section-title h2{font-size:36px;margin-bottom:16px;color:#444444;font-weight:700;letter-spacing:-0.5px}
.section-title p{font-size:18px;color:var(--sub);margin:0;line-height:1.6;max-width:650px;margin:0 auto}

.products-grid{display:grid;gap:24px;grid-template-columns:repeat(3,1fr);margin:0 auto;align-items:stretch;max-width:1200px}
.product-card{background:#ffffff;border:1px solid #e6e8eb;border-radius:20px;padding:32px;text-align:center;transition:all .4s cubic-bezier(0.4,0,0.2,1);position:relative;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.04);display:flex;flex-direction:column;height:100%}
.product-card:hover{transform:translateY(-8px);box-shadow:0 24px 48px rgba(0,0,0,.12);border-color:var(--brand)}
.product-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--brand),var(--brand-2));opacity:0;transition:opacity .4s}
.product-card:hover::before{opacity:1}

.product-icon{margin-bottom:24px;position:relative}
.icon-wrapper{width:70px;height:70px;background:linear-gradient(135deg,#f8fafc,#e6e8eb);border-radius:18px;display:flex;align-items:center;justify-content:center;font-size:32px;margin:0 auto;transition:all .4s;position:relative;box-shadow:0 8px 24px rgba(0,0,0,.08)}
.icon-wrapper--svg{font-size:0;line-height:0;color:#0369a1}
.icon-wrapper--svg svg{display:block;flex-shrink:0}
.product-card:hover .icon-wrapper{transform:scale(1.1) rotate(5deg);background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#ffffff;box-shadow:0 16px 32px rgba(11,94,215,.3)}

.product-card h3{font-size:20px;margin-bottom:14px;color:#444444;font-weight:700;letter-spacing:-0.3px}
.product-card p{font-size:15px;color:var(--sub);margin-bottom:24px;line-height:1.6;font-weight:400}

.product-features{list-style:none;padding:0;margin:0 0 24px 0;text-align:left;flex-grow:1}
.product-features li{position:relative;padding:8px 0 8px 24px;color:var(--sub);font-size:14px;font-weight:500;transition:color .3s}
.product-features li a{color:inherit;text-decoration:none;transition:color .3s}
.product-features li a:hover{color:var(--brand)}
.product-features li::before{content:'✓';position:absolute;left:0;top:8px;color:var(--brand);font-weight:700;font-size:16px}
.product-features li:hover{color:#444444}

.product-btn{display:flex;align-items:center;justify-content:center;padding:14px 28px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#ffffff;text-decoration:none;border-radius:10px;font-weight:600;font-size:14px;transition:all .3s;position:relative;overflow:hidden;box-shadow:0 8px 24px rgba(11,94,215,.3);min-height:48px;margin-top:auto}
.product-btn::before{content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .5s}
.product-btn:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(11,94,215,.4)}
.product-btn:hover::before{left:100%}

/* 应用技术样式 */

.application-item{display:flex;gap:32px;margin-bottom:48px;padding:32px;background:#ffffff;border:1px solid #e6e8eb;border-radius:16px;transition:all .3s;position:relative;overflow:hidden}
.application-item:hover{transform:translateY(-4px);box-shadow:0 16px 32px rgba(0,0,0,.08);border-color:var(--brand)}
.application-item::before{content:'';position:absolute;left:0;top:0;bottom:0;width:4px;background:linear-gradient(180deg,var(--brand),var(--brand-2));opacity:0;transition:opacity .3s}
.application-item:hover::before{opacity:1}

.app-number{width:60px;height:60px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#ffffff;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;flex-shrink:0;box-shadow:0 8px 24px rgba(11,94,215,.3);transition:transform .3s}
.application-item:hover .app-number{transform:scale(1.1) rotate(5deg)}

.app-content{flex:1;padding-left:8px}
.app-content h3{font-size:24px;color:var(--brand);font-weight:700;margin:0 0 12px 0;letter-spacing:-0.5px;position:relative}
.app-content h3::after{content:'';position:absolute;bottom:-6px;left:0;width:40px;height:3px;background:linear-gradient(90deg,var(--brand),var(--brand-2));border-radius:2px}
.app-content p{font-size:16px;color:var(--sub);margin:0 0 24px 0;line-height:1.6;font-weight:400}

.app-products{display:grid;gap:20px;grid-template-columns:repeat(auto-fit, minmax(300px, 1fr))}
.app-product{background:#f8fafc;border:1px solid #e6e8eb;border-radius:12px;padding:20px;transition:all .3s}
a.app-product{display:block;text-decoration:none;color:inherit;box-sizing:border-box}
.app-product:hover{background:#ffffff;box-shadow:0 8px 24px rgba(0,0,0,.06);border-color:var(--brand)}
.app-product h4{font-size:16px;color:#444444;font-weight:700;margin:0 0 8px 0;line-height:1.3}
.app-product p{font-size:14px;color:var(--sub);margin:0;line-height:1.6;font-weight:400}
a.app-product:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.about-card img{width:100%;height:auto;object-fit:cover}

/* 企业动态（首页 section-news：标题区 + 卡片栅格） */
.section-news{background:linear-gradient(180deg,#f8fafc 0%,#ffffff 48%,#ffffff 100%)}
.section-news .section-title{margin-bottom:52px}
.section-news .section-title::after{bottom:-18px;width:48px;height:3px;opacity:.9}
.section-news .section-title h2{font-size:clamp(26px,4vw,34px);color:#0f172a;font-weight:700;letter-spacing:-0.03em;line-height:1.2;margin:0 0 14px}
.section-news .section-title p{font-size:16px;color:#64748b;line-height:1.65;max-width:540px;margin:0 auto;font-weight:400}

/* 首页新闻卡片：边框更淡、圆角略小 */
.section-news .news-card{border-color:#eceff3;border-radius:10px}
.section-news .news-card:hover{border-color:#dfe6ed}
.section-news .news-image,.section-news a.news-image:focus-visible{border-radius:10px 10px 0 0}
.section-news .news-date-text{background:#f1f5f9;color:#64748b}

.news-grid{display:grid;gap:28px;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));margin:36px 0 40px}
.news-card{background:#ffffff;border:1px solid #e2e8f0;border-radius:14px;padding:0;transition:box-shadow .28s ease,border-color .28s ease,transform .28s ease;position:relative;overflow:hidden;box-shadow:0 1px 2px rgba(15,23,42,.04),0 8px 24px rgba(15,23,42,.04);display:flex;flex-direction:column;gap:0}
.news-card:hover{transform:translateY(-3px);box-shadow:0 4px 12px rgba(15,23,42,.06),0 20px 40px rgba(15,23,42,.08);border-color:#cbd5e1}
.news-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--brand),var(--brand-2));opacity:0;transition:opacity .28s ease}
.news-card:hover::before{opacity:1}

.news-image{width:100%;height:196px;border-radius:14px 14px 0 0;overflow:hidden;position:relative;background:#f1f5f9}
a.news-image{display:block;text-decoration:none;color:inherit}
a.news-image:focus-visible{outline:2px solid var(--brand);outline-offset:2px;z-index:1;position:relative;border-radius:14px 14px 0 0}
.news-img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .35s ease}
.news-card:hover .news-img{transform:scale(1.04)}

.news-content{flex:1;padding:22px 24px 26px;display:flex;flex-direction:column;min-height:0}
.news-date-text{display:inline-block;align-self:flex-start;margin:0 0 14px;padding:6px 12px;background:rgba(62,166,255,.12);color:#0c4a6e;font-size:12px;font-weight:400;letter-spacing:.04em;border-radius:999px;font-variant-numeric:tabular-nums;line-height:1.2}
.news-content h3{font-size:19px;color:#0f172a;font-weight:700;margin:0 0 12px;line-height:1.35;letter-spacing:-0.02em}
.news-content h3 .news-title-link{color:inherit;text-decoration:none;transition:color .2s ease}
.news-content h3 .news-title-link:hover{color:var(--brand)}
.news-content h3 .news-title-link:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:2px}
.news-content p{font-size:15px;color:#475569;margin:0 0 16px;line-height:1.7;flex:1;font-weight:400}
.news-content-bottom{display:flex;flex-direction:row;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;flex-wrap:wrap}
.news-content-bottom .news-date-text{margin:0;flex-shrink:0;white-space:nowrap}
.news-link{align-self:flex-start;display:inline-block;color:#0369a1;text-decoration:none;font-size:14px;font-weight:600;position:relative;padding-bottom:3px;transition:color .2s ease}
.news-content-bottom .news-link{align-self:center;margin:0}
.news-link::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .25s ease;border-radius:1px}
.news-link:hover{color:#0284c7}
.news-link:hover::after{width:100%}

.news-date{width:80px;height:80px;background:linear-gradient(135deg,var(--brand),var(--brand-2));border-radius:16px;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#ffffff;flex-shrink:0;box-shadow:0 8px 24px rgba(11,94,215,.3);transition:transform .3s}
.news-card:hover .news-date{transform:scale(1.05)}
.date-day-month{font-size:16px;font-weight:700;line-height:1;margin-bottom:6px}
.date-year{font-size:18px;font-weight:800;line-height:1;opacity:0.95}

.section-news .news-cta{margin-top:8px}
.news-cta{text-align:center;margin-top:48px}
.section-news .news-cta .btn-outline{border-color:#0369a1;color:#0369a1}
.section-news .news-cta .btn-outline:hover{color:#ffffff;border-color:var(--brand)}
.btn-outline{display:inline-block;padding:14px 32px;background:transparent;color:var(--brand);text-decoration:none;border:2px solid var(--brand);border-radius:10px;font-weight:600;font-size:15px;transition:all .3s;position:relative;overflow:hidden}
.btn-outline::before{content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;background:var(--brand);transition:left .3s;z-index:-1}
.btn-outline:hover{color:#ffffff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(11,94,215,.3)}
.btn-outline:hover::before{left:0}
.site-footer{
  border-top:1px solid rgba(148,163,184,.14);
  padding:56px 0 0;
  color:#94a3b8;
  background:linear-gradient(165deg,#111827 0%,#0f172a 42%,#0c1220 100%);
}
.footer-content{display:grid;gap:40px 32px;grid-template-columns:1.35fr 2fr 1fr;margin-bottom:40px}
.footer-section--products .footer-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));column-gap:20px;row-gap:4px}
.footer-section--products .footer-links li{margin-bottom:4px}
.footer-section h3{color:#f8fafc;font-size:clamp(18px,2.5vw,22px);font-weight:700;margin:0 0 10px;letter-spacing:-0.02em;line-height:1.3}
.footer-section h4{
  color:#e2e8f0;
  font-size:16px;
  font-weight:600;
  margin:0 0 18px;
  letter-spacing:.04em;
  text-transform:uppercase;
  padding-bottom:10px;
  border-bottom:1px solid rgba(62,166,255,.25);
  display:inline-block;
  min-width:0;
}
.footer-logo{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.footer-logo-img{height:40px;width:auto;filter:brightness(0) invert(1);opacity:.92}
.footer-desc{color:#94a3b8;line-height:1.65;margin:0;font-size:14px;max-width:400px}
.footer-social{display:flex;gap:16px}
.social-link{display:flex;align-items:center;justify-content:center;width:44px;height:44px;background:rgba(148,163,184,.1);border-radius:10px;transition:background .25s ease,transform .25s ease,color .25s ease;text-decoration:none;font-size:18px;color:#e2e8f0}
.social-link:hover{background:var(--brand);color:#041018;transform:translateY(-2px);box-shadow:0 8px 24px rgba(62,166,255,.35)}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li{margin-bottom:10px}
.footer-links a{color:#cbd5e1;text-decoration:none;transition:color .2s ease;font-size:14px;line-height:1.45}
.footer-links a:hover{color:#ffffff}
.footer-contact{display:flex;flex-direction:column;gap:14px}
.footer-contact-item{display:flex;align-items:flex-start;gap:12px;color:#cbd5e1;font-size:14px;line-height:1.5}
.footer-contact-icon{
  flex-shrink:0;
  width:36px;
  height:36px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:14px;
  text-align:center;
  background:rgba(62,166,255,.12);
  color:var(--brand-2);
  border-radius:8px;
}
.footer-contact-item a{color:#cbd5e1;text-decoration:none;transition:color .2s ease}
.footer-contact-item a:hover{color:#ffffff}
.footer-bottom{border-top:1px solid rgba(148,163,184,.12);padding:22px 0 28px;margin-top:4px}
.footer-bottom-content{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px 20px}
.footer-bottom p{color:#64748b;margin:0;font-size:13px;line-height:1.5}
.footer-bottom-links{display:flex;gap:20px;flex-wrap:wrap}
.footer-bottom-links a{color:#64748b;text-decoration:none;font-size:13px;transition:color .2s ease}
.footer-bottom-links a:hover{color:var(--brand)}

/* 关于我们页面样式 */
.page-hero{padding:100px 0 60px;text-align:center;position:relative;overflow:hidden;min-height:40vh;display:flex;align-items:center}
.page-hero-bg{position:absolute;top:0;left:0;right:0;bottom:0;z-index:0;width:100%;height:100%}
.page-hero-img{width:100% !important;height:100% !important;display:block}
.page-hero-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,rgba(10,12,16,0.7),rgba(15,18,24,0.8));z-index:1}
.page-hero-content{position:relative;z-index:2;max-width:800px;margin:0 auto;padding:0 20px}
.page-hero h1{font-size:48px;font-weight:700;color:#ffffff;margin:0 0 20px;letter-spacing:-1px;text-shadow:0 2px 4px rgba(0,0,0,0.3)}
.page-hero p{font-size:20px;color:#e6edf3;line-height:1.6;margin:0;text-shadow:0 1px 2px rgba(0,0,0,0.3)}

.about-intro{padding:80px 0}
.about-content{display:grid;gap:60px;grid-template-columns:1fr 1fr;align-items:center}
.about-text h2{font-size:32px;color:#444444;font-weight:700;margin:0 0 24px;letter-spacing:-0.5px}
.about-text .lead{font-size:18px;color:var(--sub);line-height:1.7;margin:0 0 24px;font-weight:500}
.about-text p{font-size:16px;color:var(--sub);line-height:1.7;margin:0 0 32px}
.about-features{display:flex;flex-direction:column;gap:24px}
.feature-item{display:flex;gap:20px;align-items:flex-start}
.feature-icon{font-size:24px;width:48px;height:48px;background:linear-gradient(135deg,var(--brand),var(--brand-2));border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:2px}
.feature-content{flex:1}
.feature-content h3{font-size:18px;color:#444444;font-weight:600;margin:0 0 8px}
.feature-content p{font-size:14px;color:var(--sub);line-height:1.6;margin:0}
.about-image{position:relative}
.about-main-img{width:100%;height:400px;object-fit:cover;border-radius:16px;box-shadow:0 20px 40px rgba(0,0,0,.1)}

.advantages-grid{display:grid;gap:32px;grid-template-columns:repeat(2,1fr);margin-top:60px}
.advantage-card{background:#ffffff;border:1px solid #e6e8eb;border-radius:16px;padding:32px;text-align:center;transition:all .4s cubic-bezier(0.4,0,0.2,1);position:relative;overflow:hidden;animation:fadeInUp 0.6s ease-out}
.advantage-card:nth-child(1){animation-delay:0.1s}
.advantage-card:nth-child(2){animation-delay:0.2s}
.advantage-card:nth-child(3){animation-delay:0.3s}
.advantage-card:nth-child(4){animation-delay:0.4s}
.advantage-card:hover{transform:translateY(-8px) scale(1.02);box-shadow:0 24px 48px rgba(0,0,0,.15);border-color:var(--brand)}
.advantage-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--brand),var(--brand-2));opacity:0;transition:opacity .4s}
.advantage-card:hover::before{opacity:1}
.advantage-card::after{content:'';position:absolute;top:50%;left:50%;width:0;height:0;background:radial-gradient(circle,rgba(59,130,246,0.1),transparent);border-radius:50%;transform:translate(-50%,-50%);transition:all .6s;z-index:0}
.advantage-card:hover::after{width:300px;height:300px}
.advantage-icon{width:60px;height:60px;background:linear-gradient(135deg,#f8fafc,#e6e8eb);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:28px;margin:0 auto 20px;transition:all .4s;position:relative;z-index:1}
.advantage-icon--svg{font-size:0;line-height:0;color:#0369a1}
.advantage-icon--svg svg{display:block;flex-shrink:0}
.advantage-card:hover .advantage-icon{transform:scale(1.15) rotate(10deg);background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#ffffff;box-shadow:0 12px 24px rgba(11,94,215,.4)}
.advantage-card h3{font-size:20px;color:#444444;font-weight:700;margin:0 0 12px;position:relative;z-index:1;transition:color .3s}
.advantage-card:hover h3{color:var(--brand)}
.advantage-card p{font-size:15px;color:var(--sub);line-height:1.6;margin:0;position:relative;z-index:1;transition:color .3s}
.advantage-card:hover p{color:#444444}
@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}100%{opacity:1;transform:translateY(0)}}

.timeline{position:relative;max-width:800px;margin:60px auto 0}
.timeline::before{content:'';position:absolute;left:30px;top:0;bottom:0;width:2px;background:linear-gradient(180deg,var(--brand),var(--brand-2))}
.timeline-item{position:relative;padding-left:80px;margin-bottom:48px}
.timeline-year{position:absolute;left:0;top:0;width:60px;height:60px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#ffffff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;box-shadow:0 8px 24px rgba(11,94,215,.3)}
.timeline-content{background:#ffffff;border:1px solid #e6e8eb;border-radius:12px;padding:24px;position:relative;box-shadow:0 4px 16px rgba(0,0,0,.04)}
.timeline-content::before{content:'';position:absolute;left:-8px;top:24px;width:0;height:0;border-top:8px solid transparent;border-bottom:8px solid transparent;border-right:8px solid #e6e8eb}
.timeline-content::after{content:'';position:absolute;left:-7px;top:25px;width:0;height:0;border-top:7px solid transparent;border-bottom:7px solid transparent;border-right:7px solid #ffffff}
.timeline-content h3{font-size:18px;color:#444444;font-weight:700;margin:0 0 8px}
.timeline-content p{font-size:15px;color:var(--sub);line-height:1.6;margin:0}
/* 渐变背景下的时间轴样式 */
.section-gradient .timeline-content{background:rgba(255,255,255,0.9);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,0.3);box-shadow:0 8px 32px rgba(0,0,0,.08)}
.section-gradient .timeline-content::before{border-right-color:rgba(255,255,255,0.3)}
.section-gradient .timeline-content::after{border-right-color:rgba(255,255,255,0.9)}
.section-gradient .timeline-year{background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 8px 24px rgba(11,94,215,.4)}

/* 产品中心左右布局样式 */
.product-layout{display:grid;gap:48px;grid-template-columns:280px 1fr;align-items:start}
.product-sidebar{background:#ffffff;border:1px solid #e6e8eb;border-radius:10px;padding:32px;position:sticky;top:100px;box-shadow:0 4px 16px rgba(0,0,0,.04)}
.sidebar-title{margin-bottom:15px;padding-bottom:16px;border-bottom:2px solid #f1f5f9}
.sidebar-title h2{font-size:20px;color:#444444;font-weight:700;margin:0}
.sidebar-title--collapsible{padding-bottom:0;border-bottom:none;margin-bottom:0}
.product-sidebar-toggle{
  width:100%;margin:0;padding:0 0 16px;border:0;border-bottom:2px solid #f1f5f9;background:transparent;
  font:inherit;text-align:left;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:12px;
  color:#444444;-webkit-tap-highlight-color:transparent
}
.product-sidebar-toggle-label{font-size:20px;font-weight:700;line-height:1.3}
.product-sidebar-toggle-chevron{
  flex-shrink:0;width:9px;height:9px;border-right:2px solid #64748b;border-bottom:2px solid #64748b;
  transform:rotate(45deg);transition:transform .2s ease;margin-top:-4px
}
.product-sidebar--nav-expanded .product-sidebar-toggle-chevron{margin-top:2px;transform:rotate(-135deg)}
.sidebar-title--collapsible + .product-categories{margin-top:15px}
@media (min-width:721px){
  .product-sidebar-toggle-chevron{display:none}
  .product-sidebar-toggle{cursor:default}
  .product-sidebar .product-categories{display:flex !important}
}
.product-categories{display:flex;flex-direction:column;gap:24px}
.category-group h3{font-size:16px;color:#444444;font-weight:600;margin:0 0 12px;padding-left:8px;position:relative}
.category-group h3::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:16px;background:linear-gradient(180deg,var(--brand),var(--brand-2));border-radius:2px}
.category-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:4px}
.category-link{display:block;padding:12px 16px;color:#475569;text-decoration:none;border-radius:8px;transition:all .3s;font-size:14px;font-weight:500;position:relative}
.category-link:hover{color:var(--brand);background:#f8fafc;transform:translateX(4px)}
.category-link.active{color:var(--brand);background:linear-gradient(135deg,rgba(59,130,246,0.1),rgba(109,255,255,0.05));font-weight:600}
.category-link.active::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:20px;background:linear-gradient(180deg,var(--brand),var(--brand-2));border-radius:2px}

.product-content{display:flex;flex-direction:column;gap:32px}
.product-section--mfc{scroll-margin-top:100px}
.product-section{background:#ffffff;border:none;border-radius:16px;box-shadow:none;transition:all .3s}
.product-section:hover{box-shadow:none;transform:none}
.product-section--mfc:hover{transform:none;box-shadow:none}
.mfc-section-head{margin-bottom:28px;padding-bottom:20px;border-bottom:1px solid #e8eaed}
.mfc-section-head h2{margin:0 0 12px;font-size:22px;line-height:1.3;color:#444444;font-weight:700}
.mfc-section-head p{margin:0;font-size:15px;color:#64748b;line-height:1.65;max-width:920px}
.mfc-series-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-bottom:20px}
.mfc-series-card{display:flex;flex-direction:column;align-items:stretch;gap:16px;padding:20px 18px;height:100%;border:1px solid #eef1f5;border-radius:12px;background:#fafbfc;transition:border-color .2s,box-shadow .2s;box-sizing:border-box}
a.mfc-series-card{text-decoration:none;color:inherit;cursor:pointer;box-sizing:border-box}
a.mfc-series-card:visited{color:inherit}
a.mfc-series-card:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.mfc-series-card:hover{border-color:#dbe3eb;box-shadow:0 6px 20px rgba(15,23,42,.06)}
.mfc-series-media{flex:none;width:100%;max-width:100%;display:flex;align-items:center;justify-content:center;text-decoration:none;background:#ffffff;border-radius:8px}
.mfc-series-img{width:100%;max-width:200px;height:auto;max-height:150px;object-fit:contain;transition:transform .25s;display:block;margin:0 auto}
.mfc-series-card:hover .mfc-series-img{transform:scale(1.02)}
.mfc-series-content{flex:1;min-width:0}
.mfc-series-name{margin:0 0 6px;font-size:16px;font-weight:700;color:#1e293b;line-height:1.35}
.mfc-series-title{margin:0 0 14px;font-size:14px;font-weight:600;color:#334155;line-height:1.45}
.mfc-series-description{font-size:13px; color: #475569; line-height: 1.6;}
.mfc-series-specs{display:grid;grid-template-columns:1fr;gap:6px 0;margin:0;padding:0;font-size:12px;color:#475569;line-height:1.45;list-style:none}
.mfc-series-specs li{position:relative;margin:0;padding-left:14px}
.mfc-series-specs li::before{content:'';position:absolute;left:0;top:.62em;width:4px;height:4px;border-radius:50%;background:#94a3b8}
.mfc-series-footnote{margin:20px 0 0;font-size:12px;color:#94a3b8;line-height:1.5}
@media (max-width:1100px){
  .mfc-series-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:700px){
  .mfc-series-grid{grid-template-columns:1fr;gap:12px;margin-bottom:12px}
  .mfc-series-card{gap:12px;padding:14px 12px;border-radius:10px}
  .mfc-series-media{border-radius:6px;background:#ffffff}
  .mfc-series-img{max-height:160px}
  .mfc-series-name{font-size:15px;margin:0 0 4px}
  .mfc-series-title{margin:0 0 10px;font-size:13px}
  .mfc-series-specs{font-size:12px;gap:5px 0}
}
.product-header{display:flex;gap:32px;align-items:flex-start;margin-bottom:32px}
.product-icon{flex-shrink:0}
.product-icon .icon-wrapper{width:60px;height:60px;background:linear-gradient(135deg,#f8fafc,#e6e8eb);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:28px;box-shadow:0 4px 12px rgba(0,0,0,.08)}
.product-img{width:120px;height:120px;object-fit:cover;border-radius:20px;box-shadow:0 6px 20px rgba(0,0,0,.12);transition:transform .3s}
.product-img:hover{transform:scale(1.05)}
.product-info h2{font-size:24px;color:#444444;font-weight:700;margin:0 0 12px;line-height:1.3}
.product-title-link{color:#444444;text-decoration:none;transition:color .3s;position:relative}
.product-title-link:hover{color:var(--brand)}
.product-title-link::after{content:'';position:absolute;bottom:-2px;left:0;width:0;height:2px;background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .3s;border-radius:1px}
.product-title-link:hover::after{width:100%}
.product-info p{font-size:16px;color:var(--sub);margin:0;line-height:1.6}
.product-specs{display:flex;flex-direction:column;gap:24px}
.spec-grid{display:grid;gap:16px;grid-template-columns:repeat(2,1fr)}
.spec-item{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:#f8fafc;border-radius:8px;border:1px solid #e6e8eb}
.spec-label{font-size:14px;color:var(--sub);font-weight:500}
.spec-value{font-size:14px;color:#444444;font-weight:600}
.product-actions{display:flex;gap:20px;align-items:center;justify-content:flex-start}
.product-actions .btn{font-size:15px;padding:14px 28px;border-radius:12px;font-weight:600;text-decoration:none;transition:all .3s;position:relative;overflow:hidden;min-width:120px;text-align:center;display:inline-flex;align-items:center;justify-content:center}
.product-actions .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#ffffff;border:none;box-shadow:0 4px 16px rgba(59,130,246,0.3)}
.product-actions .btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(59,130,246,0.4);background:linear-gradient(135deg,#2563eb,#0891b2)}
.product-actions .btn-primary::before{content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,0.2),transparent);transition:left .5s}
.product-actions .btn-primary:hover::before{left:100%}
.product-actions .btn-outline{background:transparent;color:var(--brand);border:2px solid var(--brand);box-shadow:0 2px 8px rgba(59,130,246,0.1)}
.product-actions .btn-outline:hover{background:var(--brand);color:#ffffff;transform:translateY(-2px);box-shadow:0 6px 20px rgba(59,130,246,0.3)}

/* 应用技术页面样式 */
.application-overview{margin-bottom:80px}
.application-showcase{display:grid;gap:40px;grid-template-columns:repeat(2,1fr);max-width:1400px;margin:0 auto}
.app-section{background:#ffffff;border:1px solid #e6e8eb;border-radius:24px;padding:48px;box-shadow:0 8px 32px rgba(0,0,0,.06);transition:all .4s cubic-bezier(0.4,0,0.2,1);position:relative;overflow:hidden}
.app-section::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--brand),var(--brand-2));opacity:0;transition:opacity .3s}
.app-section:hover{transform:translateY(-8px);box-shadow:0 20px 60px rgba(0,0,0,.15);border-color:var(--brand)}
.app-section:hover::before{opacity:1}
.section-header{margin-bottom:24px;position:relative}
.section-header h3{font-size:28px;color:#444444;font-weight:700;margin:0;line-height:1.2;position:relative;padding-bottom:12px}
.section-header h3::after{content:'';position:absolute;bottom:0;left:0;width:60px;height:3px;background:linear-gradient(90deg,var(--brand),var(--brand-2));border-radius:2px}
.section-desc{font-size:18px;color:var(--sub);margin:0 0 32px;line-height:1.6;font-weight:500}
.section-content{line-height:1.8;color:#444444}
.section-content p{font-size:16px;margin:0 0 24px;color:var(--sub);text-align:justify}
.section-content p:last-child{margin-bottom:0}

/* 视频展示页 */
.video-page{padding-top:60px}
.video-showcase{margin-bottom:80px}
.video-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.video-card{background:#ffffff;border:1px solid #e6e8eb;border-radius:16px;padding:16px;box-shadow:0 4px 16px rgba(0,0,0,.04)}
.video-trigger{width:100%;padding:0;border:0;background:transparent;cursor:pointer;text-align:left}
.video-thumb{position:relative;display:block;border-radius:10px;overflow:hidden}
.video-thumb img{display:block;width:100%;aspect-ratio:16/9;object-fit:cover}
.video-play-icon{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:rgba(15,23,42,.72);color:#ffffff;font-size:18px;transition:transform .2s ease,background .2s ease}
.video-trigger:hover .video-play-icon{transform:translate(-50%,-50%) scale(1.06);background:rgba(37,99,235,.88)}
.video-trigger-title{display:block;margin:12px 0 2px;font-size:16px;line-height:1.45;color:#334155}
.video-modal{position:fixed;inset:0;z-index:1200;display:none;align-items:center;justify-content:center;padding:20px}
.video-modal.is-open{display:flex}
.video-modal-mask{position:absolute;inset:0;background:rgba(0,0,0,.82)}
.video-modal-dialog{position:relative;z-index:1;width:min(960px,92vw);margin:0;background:#ffffff;border-radius:0;padding:16px 16px 14px;box-shadow:0 24px 64px rgba(0,0,0,.35)}
.video-modal-title{margin:0 44px 12px 2px;font-size:18px;line-height:1.4;color:#1e293b}
.video-modal-close{position:absolute;right:10px;top:10px;width:34px;height:34px;border:0;border-radius:8px;background:#f1f5f9;color:#334155;cursor:pointer}
.video-modal-close:hover{background:#e2e8f0}
.video-modal-dialog video{display:block;width:100%;aspect-ratio:16/9;background:#000000;border-radius:0}

/* 新闻列表页面样式 */
.news-list-section{margin-bottom:80px}
.news-list-container{max-width:1000px;margin:0 auto}
.news-list-item{display:flex;gap:24px;padding:24px;background:#ffffff;border:1px solid #e6e8eb;border-radius:12px;margin-bottom:20px;box-shadow:0 2px 8px rgba(0,0,0,.04);transition:all .3s}
.news-list-item:hover{box-shadow:0 8px 24px rgba(0,0,0,.12);border-color:var(--brand);transform:translateY(-2px)}
.news-list-image{flex-shrink:0;width:200px;height:140px;overflow:hidden;border-radius:8px}
a.news-list-image{display:block;text-decoration:none;color:inherit;align-self:flex-start}
a.news-list-image:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.news-list-img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.news-list-item:hover .news-list-img{transform:scale(1.05)}
.news-list-content{flex:1;display:flex;flex-direction:column;justify-content:space-between}
.news-list-title{margin:0 0 12px;line-height:1.4}
.news-list-title a{color:#444444;text-decoration:none;font-size:18px;font-weight:600;transition:color .3s}
.news-list-title a:hover{color:var(--brand)}
.news-list-excerpt{color:var(--sub);font-size:14px;line-height:1.6;margin:0 0 16px;display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-list-meta{margin-top:auto}
.news-list-date{color:var(--sub);font-size:14px;font-weight:500}

/*产品封面*/
.profm-bg{background:url(../images/probg.png) top no-repeat; background-size: cover;}
.profm-page{padding-top:60px;padding-bottom:32px}
.profm{width:1000px; margin: 0 auto; position: relative;}

.pic{ text-align: center; max-width: 100%; max-height: 100%;}
.pro-img{ text-align: center; width: 100%; height: 100%;}
.pro-img:hover img{ transform: scale(1.05);}
.pro-img img{max-width: 100%; max-height: 100%; transition: 0.5s ease all;}
.pro-txt{ text-align: center; font-size: 14px;}
.pro-txt{color:#333;}
.pro-box:hover .pro-txt{color:red;}
.pro-1{position: absolute; top: 5%; left: 8.2%; width: 15%; height: 12%;}
.pro-2{position: absolute; top: 5%; left: 30%; width: 12%; height: 12%;}
.pro-3{position: absolute; top: 5%; left: 71%; width: 12%; height: 12%;}
.pro-4{position: absolute; top: 21.6%; left: 9%; width: 12%; height: 12%;}
.pro-5{position: absolute; top: 21.6%; left: 23%; width: 12%; height: 12%;}
.pro-6{position: absolute; top: 21.6%; left: 35%; width: 12%; height: 12%;}
.pro-7{position: absolute; top: 15.7%; left: 62%; width: 10%; height: 11.5%;}
.pro-8{position: absolute; top: 18%; left: 82%; width: 10%; height: 11.5%;}
.pro-9{position: absolute; top: 46%; left: 31.7%; width: 10%; height: 8%;}
.pro-tit{position: absolute; top: 48%; left: 47.5%; width: 13.5%; height: 12%; text-align: center; font-size: 18px; color:#FFF;}
.pro-10{position: absolute; top: 33.5%; left: 82%; width: 10%; height: 11.5%;}
.pro-11{position: absolute; top: 45%; left: 66%; width: 10%; height: 9%;}
.pro-12{position: absolute; top: 61.2%; left: 10%; width: 12%; height: 11.5%;}
.pro-13{position: absolute; top: 60.3%; left: 23%; width: 10%; height: 10.5%;}
.pro-14{position: absolute; top: 64.7%; left: 36.6%; width: 8%; height: 9%;}
.pro-15{position: absolute; top: 67.5%; left: 49.5%; width: 10%; height: 6%;}
.pro-16{position: absolute; top: 63.5%; left: 58.3%; width: 12%; height:14.5%;}
.pro-16-tit{position: absolute; top: 68%; left: 65%; width: 8%; height:14.5%; font-size: 12px; text-align: center;}
.pro-16:hover + .pro-16-tit{color: red;}
.pro-16-tit:hover{color: red;}
.pro-17{position: absolute; top: 75.7%; left: 33.8%; width: 10%; height:12%;}
.pro-18{position: absolute; top: 78.6%; left: 53%; width: 10%; height:8%;}
.pro-19{position: absolute; top: 73.6%; left: 64%; width: 10%; height:10%;}
.pro-20{position: absolute; top: 56%; left: 78.3%; width: 10%; height:10%;}
.pro-20-tit{position: absolute; top: 60%; left: 84.2%; width: 10%; height:10%; font-size: 12px; text-align: center;}
.pro-20:hover + .pro-20-tit{color: red;}
.pro-20-tit:hover{color: red;}
.pro-21{position: absolute; top: 65.5%; left: 73.5%; width: 22%; height:22%;}

/* profm.html：移动端 — 底图热点改为纵向卡片列表 */
@media (max-width:720px){
  .profm-bg{
    background:none;
    background-color:#f1f5f9;
  }
  .profm{
    width:100%;
    max-width:100%;
    position:relative;
    display:flex;
    flex-direction:column;
    gap:0;
    padding-bottom:8px;
  }
  .profm > img:first-child{
    display:none;
  }
  .profm .pro-box,
  .profm .pro-tit,
  .profm .pro-16-tit,
  .profm .pro-20-tit{
    position:static !important;
    left:auto !important;
    top:auto !important;
    width:100% !important;
    max-width:100%;
    height:auto !important;
    margin:0 0 10px;
    box-sizing:border-box;
  }
  .profm .pro-box a{
    display:flex;
    align-items:center;
    gap:12px;
    padding:12px 14px;
    background:#ffffff;
    border:1px solid #e2e8f0;
    border-radius:10px;
    text-decoration:none;
    color:inherit;
    min-height:56px;
    -webkit-tap-highlight-color:transparent;
    transition:background .2s ease,border-color .2s ease;
  }
  .profm .pro-box a:active{background:#f8fafc;border-color:#cbd5e1}
  .profm .pro-img{
    flex:0 0 56px;
    width:56px;
    height:56px;
    display:flex;
    align-items:center;
    justify-content:center;
  }
  .profm .pro-img img{
    max-width:100%;
    max-height:100%;
    object-fit:contain;
  }
  .profm .pro-txt{
    flex:1;
    text-align:left;
    font-size:14px;
    line-height:1.45;
    color:#334155;
  }
  .profm .pro-box:hover .pro-txt{color:var(--brand)}
  .profm .pro-16 a,
  .profm .pro-20 a{
    justify-content:center;
    min-height:72px;
  }
  .profm .pro-16 .pro-img,
  .profm .pro-20 .pro-img{
    flex:0 0 auto;
    width:88px;
    height:72px;
  }
  .profm .pro-tit{
    color:#0f172a;
    font-size:15px;
    font-weight:700;
    padding:18px 8px 6px;
    margin:6px 0 0;
    text-align:center;
    letter-spacing:.02em;
  }
  .profm .pro-16-tit,
  .profm .pro-20-tit{
    margin-bottom:10px;
  }
  .profm .pro-16-tit a,
  .profm .pro-20-tit a{
    display:block;
    padding:12px 14px;
    background:#ffffff;
    border:1px solid #e2e8f0;
    border-radius:10px;
    color:#334155;
    font-size:14px;
    line-height:1.45;
    text-align:center;
    text-decoration:none;
    font-weight:500;
    transition:background .2s ease,border-color .2s ease,color .2s ease;
  }
  .profm .pro-16-tit a:active,
  .profm .pro-20-tit a:active{background:#f8fafc;color:var(--brand)}
  .profm-page{padding-top:28px;padding-bottom:20px}
}


/* 新闻详情页（newtxt.html） */
.news-detail-page{padding-top:56px;padding-bottom:56px;background:linear-gradient(180deg,#f8fafc 0%,#ffffff 22%)}
.news-detail{max-width:1000px;margin:0 auto;padding:0 4px}
.news-detail-header{text-align:center;margin-bottom:40px;padding-bottom:28px;border-bottom:1px solid #eceff3}
.news-detail-title{font-size:clamp(26px,4.2vw,36px);color:#0f172a;font-weight:700;margin:0 0 20px;line-height:1.28;letter-spacing:-0.03em}
.news-detail-info{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:10px 20px;margin:0}
.news-detail-date{display:inline-block;padding:6px 14px;background:#f1f5f9;color:#64748b;font-size:14px;font-weight:400;border-radius:999px;font-variant-numeric:tabular-nums}
.news-detail-views{color:#94a3b8;font-size:14px;font-weight:400}
.news-detail-subtitle{font-size:18px;color:#64748b;margin:0;line-height:1.65;font-weight:400;max-width:36ch;margin-inline:auto}
.news-detail-content{margin-bottom:48px}
.news-detail-image{margin:0 0 36px;text-align:center}
.news-detail-img{max-width:100%;width:100%;height:400px;object-fit:cover;border-radius:10px;border:1px solid #eceff3;box-shadow:0 4px 24px rgba(15,23,42,.06)}
.news-detail-text{line-height:1.85;color:#334155;width:100%;max-width:100%;margin:0}
.news-detail-text>p:first-of-type{font-size:18px;color:#334155;line-height:1.8;margin:0 0 28px;font-weight:400}
.news-detail-text p{font-size:16px;margin:0 0 1.35em;color:#475569}
.news-detail-text p:last-child{margin-bottom:0}
.news-detail-text h2{font-size:22px;color:#0f172a;font-weight:700;margin:2.5rem 0 1rem;padding:0 0 12px;border-bottom:1px solid #e2e8f0;letter-spacing:-0.02em;line-height:1.35}
.news-detail-text h3{font-size:18px;color:#0f172a;font-weight:600;margin:2rem 0 12px;line-height:1.4}
.news-detail-highlights{background:#f8fafc;border:1px solid #eceff3;border-radius:10px;padding:28px 32px;margin:40px 0 0}
.news-detail-highlights h3{font-size:17px;color:#0f172a;font-weight:700;margin:0 0 16px;text-align:center;letter-spacing:-0.02em}
.news-detail-highlights ul{list-style:none;padding:0;margin:0}
.news-detail-highlights li{padding:12px 0 12px 26px;font-size:15px;color:#475569;position:relative;border-bottom:1px solid #f1f5f9;line-height:1.55}
.news-detail-highlights li:last-child{border-bottom:none}
.news-detail-highlights li::before{content:'✓';color:var(--brand);font-weight:600;position:absolute;left:0;top:12px;font-size:15px;line-height:1.55}

/* 新闻详情页 · 相关新闻 */
.news-detail-page .news-related{margin-top:52px;padding-top:36px;border-top:1px solid #eceff3}
.news-related h3{font-size:clamp(20px,3vw,24px);color:#0f172a;font-weight:700;margin:0 0 28px;text-align:center;letter-spacing:-0.02em}
.news-related-list{display:grid;gap:22px;grid-template-columns:repeat(3,1fr)}
.news-related-item{background:#ffffff;border:1px solid #eceff3;border-radius:10px;overflow:hidden;box-shadow:0 1px 3px rgba(15,23,42,.04),0 8px 20px rgba(15,23,42,.04);transition:box-shadow .25s ease,border-color .25s ease,transform .25s ease}
.news-related-item:hover{transform:translateY(-3px);box-shadow:0 8px 28px rgba(15,23,42,.08);border-color:#dfe6ed}
.news-related-image{height:152px;overflow:hidden}
a.news-related-image{display:block;text-decoration:none;color:inherit}
a.news-related-image:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.news-related-img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.news-related-item:hover .news-related-img{transform:scale(1.04)}
.news-related-content{padding:18px 20px 20px}
.news-related-content h4{margin:0 0 10px;line-height:1.45}
.news-related-content h4 a{color:#0f172a;text-decoration:none;font-size:15px;font-weight:600;transition:color .2s ease}
.news-related-content h4 a:hover{color:var(--brand)}
.news-related-date{color:#64748b;font-size:13px;font-weight:400}

/* 联系我们页面样式 */
.contact-info-section{margin-bottom:80px}
.contact-grid{display:grid;gap:32px;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));margin-top:48px}
.contact-card{background:#ffffff;border:1px solid #e6e8eb;border-radius:16px;padding:32px;box-shadow:0 4px 16px rgba(0,0,0,.04);transition:all .3s;position:relative;overflow:hidden}
.contact-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(0,0,0,.08);border-color:var(--brand)}
.contact-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--brand),var(--brand-2));opacity:0;transition:opacity .3s}
.contact-card:hover::before{opacity:1}
.contact-icon{width:60px;height:60px;background:linear-gradient(135deg,var(--brand),var(--brand-2));border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:28px;color:#ffffff;margin:0 0 20px;box-shadow:0 8px 24px rgba(11,94,215,.2)}
.contact-content h3{font-size:20px;color:#444444;font-weight:700;margin:0 0 12px;line-height:1.3}
.contact-content p{font-size:15px;color:var(--sub);line-height:1.6;margin:0 0 20px}
.contact-card .contact-detail{display:flex;flex-direction:column;gap:8px;padding:8px 0;border-bottom:1px solid #f1f5f9}
.contact-card .contact-detail:last-child{border-bottom:none}
.contact-card .detail-item{display:flex;justify-content:space-between;align-items:center;padding:4px 0}
.contact-card .detail-label{font-size:14px;color:var(--sub);font-weight:500}
.contact-card .detail-value{font-size:14px;color:#444444;font-weight:600}
.contact-card .detail-value a{color:#0369a1;text-decoration:none;font-weight:600;transition:color .2s ease}
.contact-card .detail-value a:hover{color:var(--brand)}
.footfix{display:none;}


/* 返回顶部按钮 */
.back-to-top{position:fixed;bottom:32px;right:32px;width:48px;height:48px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#ffffff;border:none;border-radius:50%;font-size:20px;font-weight:700;cursor:pointer;transition:all .3s cubic-bezier(0.4,0,0.2,1);box-shadow:0 8px 24px rgba(11,94,215,.3);z-index:1000;opacity:0;visibility:hidden;transform:translateY(20px) scale(0.8)}
.back-to-top.visible{opacity:1;visibility:visible;transform:translateY(0) scale(1)}
/* 兼容 JS 的 .show 开关，与 .visible 一致 */
.back-to-top.show{opacity:1;visibility:visible;transform:translateY(0) scale(1)}
.back-to-top:hover{transform:translateY(-4px) scale(1.05);box-shadow:0 12px 32px rgba(11,94,215,.4)}
.back-to-top:active{transform:translateY(-2px) scale(0.95);transition:all .1s ease}

/* 联系我们页面响应式 */
@media (max-width:768px){
  .contact-grid{grid-template-columns:1fr;gap:24px;margin-top:32px}
  .contact-card{padding:24px}
  .contact-icon{width:50px;height:50px;font-size:24px;margin-bottom:16px}
  .contact-content h3{font-size:18px;margin-bottom:10px}
  .contact-content p{font-size:14px;margin-bottom:16px}
  .contact-card .contact-detail{flex-direction:column;align-items:flex-start;gap:4px;padding:6px 0}
  .contact-card .detail-label,.contact-card .detail-value{font-size:13px}
  
  .footfix{display:block; position: fixed; width: 100%; bottom:0px;}
	.fixbox{width:94%; margin: 10px auto; border-radius: 10px; background-color: rgba(255,255,255,0.85); display: flex; justify-content: space-between; padding:15px;}
	.f-ico{ background: #f48c31; display: flex; justify-content: center; align-items:center; border-radius: 10px; padding:10px 15px;}
	.f-ico i{font-size:24px; color: #FFF;}
	.f-txt{font-size:18px; color: #333; display: flex; justify-content: center; align-items:center;}
	.f-btn{display: flex; justify-content: center; align-items:center;}
	.f-btn a{background: #f48c31; color: #FFF; font-size: 16px; padding:10px; border-radius: 10px; text-decoration: none; display:block;}
	.f-btn a:hover{color:#FFF;}
  
  .back-to-top{bottom:90px;right:10px;width:44px;height:44px;font-size:18px}
}

/* 分页样式 */
.pagination{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:60px}
.pagination-btn{display:flex;align-items:center;justify-content:center;min-width:40px;height:40px;padding:0 16px;background:#ffffff;border:1px solid #e6e8eb;border-radius:8px;color:var(--sub);text-decoration:none;font-size:14px;font-weight:500;transition:all .3s}
.pagination-btn:hover:not(.disabled){background:var(--brand);color:#ffffff;border-color:var(--brand);transform:translateY(-2px)}
.pagination-btn.active{background:var(--brand);color:#ffffff;border-color:var(--brand)}
.pagination-btn.disabled{opacity:0.5;cursor:not-allowed}
.pagination-ellipsis{display:flex;align-items:center;justify-content:center;min-width:32px;height:40px;padding:0 6px;color:var(--sub);font-size:14px;font-weight:500;cursor:default;user-select:none}
.pagination-btn.prev,.pagination-btn.next{padding:0 20px}

/* 移除重复定义，保留顶部主样式与可见性控制 */
@media (max-width:960px){
  .grid-2{grid-template-columns:1fr}
  .grid-3,.cards{grid-template-columns:1fr 1fr}
  .product-showcase{grid-template-columns:1fr}
  .home-about{padding:40px 0}
  .home-about-inner{grid-template-columns:1fr;gap:36px}
}

/* 平板端响应式 - 显示图片背景 */
@media (max-width:1024px){
  .hero-video{
    display:none !important;
  }
  
  .hero-image{
    display:block !important;
    background-image:url('../images/hero-poster.jpg') !important;
    background-size:cover !important;
    background-position:center !important;
    background-repeat:no-repeat !important;
    min-height:100vh !important;
  }
  .products-grid{grid-template-columns:repeat(2,1fr);max-width:900px}
}
@media (max-width:720px){
  .container{width:96%;max-width:100%}
  /* 强制隐藏，避免被上方的 .nav{display:flex} 影响 */
  .nav{display:none !important}
  .nav-container{padding:12px 0}
     /* 在移动端从导航栏下方展开，确保能完整滚动查看 */
  .nav.open{
    display:block !important;
    position:fixed;
    left:0; right:0; top:42px; bottom:0;
    background:rgba(10,12,16,.96);
    transition:.25s;
    padding:18px 24px;
    border-top:1px solid var(--line);
    z-index:99;
    box-shadow:0 10px 30px rgba(0,0,0,.35);
    overflow-y:auto !important;
    -webkit-overflow-scrolling:touch !important;
    height:calc(100vh - 42px) !important;
  }
  .nav.open > a,
  .nav.open > div {
    display:block;
    margin-bottom:14px;
  }
  /* 移动端下拉菜单 */
  .nav.open .nav-dropdown{position:static;display:block}
  .nav.open .dropdown-toggle{display:block;padding:8px 0;margin-bottom:8px}
  .nav.open .dropdown-menu{
    position:static;
    opacity:1;
    visibility:visible;
    transform:none;
    background:transparent;
    border:none;
    box-shadow:none;
    padding:4px 0 10px;
    margin:0;
    max-height:none;
    display:grid;
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:6px 10px;
    align-items:start
  }
  .nav.open .dropdown-menu a{
    color:var(--sub);
    font-size:13px;
    line-height:1.35;
    padding:8px 6px;
    display:block;
    margin:0;
    text-align:left;
    border-radius:6px;
    word-break:break-word
  }
  .nav.open .dropdown-menu a:hover{background:rgba(255,255,255,.06);color:var(--brand)}
  .nav.open a::before{display:none!important;content:none!important;width:0!important}
  .nav.open a.active::before,.nav.open a:hover::before{width:0!important}
  .menu-toggle{display:block}
  .grid-3,.cards{grid-template-columns:1fr}
  .products-grid{grid-template-columns:1fr;gap:24px;max-width:500px}
  .product-card{padding:32px}
  .icon-wrapper{width:70px;height:70px;font-size:32px}
  .product-card h3{font-size:20px}
 
  .applications-container{max-width:100%}
  .application-item{flex-direction:column;gap:20px;padding:24px}
  .app-number{width:50px;height:50px;font-size:18px}
  .app-content{padding-left:0}
  .app-content h3{font-size:20px}
  .app-products{grid-template-columns:1fr;gap:16px}
  .app-product{padding:16px}
  .section-title h2{font-size:28px}
  .section-title p{font-size:16px}
  .section-news .section-title h2{font-size:26px}
  .section-news .section-title p{font-size:15px}
  .news-grid{grid-template-columns:1fr;gap:20px}
  .news-card{flex-direction:column;gap:0;padding:0}
  .news-image{width:100%;height:176px;border-radius:12px 12px 0 0}
  .section-news .news-card{border-radius:5px}
  .section-news .news-image,.section-news a.news-image:focus-visible{border-radius:5px 5px 0 0}
  .news-content{padding:18px 18px 22px}
  .news-content h3{font-size:17px;margin-bottom:10px}
  .news-content p{font-size:14px;margin-bottom:16px;line-height:1.65}
  .news-date-text{font-size:11px;padding:5px 10px;margin-bottom:12px}
  .date-day-month{font-size:14px}
  .date-year{font-size:16px}
  /* 移动端banner背景切换 */
  .hero-video{
    display:none !important;
  }
  
  .hero-image{
    display:block !important;
    background-image:url('../images/hero-poster.jpg') !important;
    background-size:cover !important;
    background-position:center !important;
    background-repeat:no-repeat !important;
    min-height:100vh !important;
  }
  
  .hero h1{
    font-size:28px;
    margin-bottom:16px;
    line-height:1.3;
    text-align:center;
    padding:0 20px;
  }
  
  .hero p{
    margin-bottom:32px;
    font-size:16px;
    line-height:1.6;
    text-align:center;
    padding:0 20px;
  }
  
  .hero .btn{
    margin:15px auto;
    width:80%;
    max-width:280px;
    display:block;
    padding:16px 24px;
    font-size:16px;
    font-weight:600;
    border-radius:12px;
    min-height:48px;
    transition:all 0.3s cubic-bezier(0.4,0,0.2,1);
    position:relative;
    overflow:hidden;
  }
  
  .hero .btn::before{
    content:'';
    position:absolute;
    top:0;
    left:-100%;
    width:100%;
    height:100%;
    background:linear-gradient(90deg,transparent,rgba(255,255,255,0.2),transparent);
    transition:left 0.5s;
  }
  
  .hero .btn:hover::before{
    left:100%;
  }
  
  .hero .btn:hover{
    transform:translateY(-2px);
    box-shadow:0 8px 24px rgba(59,130,246,0.3);
  }
  
  .hero .btn:active{
    transform:translateY(0);
    transition:transform 0.1s ease;
  }
  /* 移动端底部 */
  .site-footer{
    padding:40px 0 0;
    background:linear-gradient(165deg,#111827 0%,#0f172a 50%,#0c1220 100%);
  }
  .footer-content{
    grid-template-columns:1fr;
    gap:28px;
    text-align:left;
    padding:0 16px;
    margin-bottom:28px;
  }
  .footer-section{
    padding:18px 0 20px;
    border-bottom:1px solid rgba(148,163,184,.1);
  }
  .footer-section:last-child{
    border-bottom:none;
    padding-bottom:8px;
  }
  .footer-logo{
    justify-content:flex-start;
    margin-bottom:12px;
    flex-direction:column;
    align-items:flex-start;
    gap:10px;
  }
  .footer-logo-img{
    height:34px;
    width:auto;
  }
  .footer-section h3{
    font-size:18px;
    margin-bottom:8px;
    color:#f8fafc;
  }
  .footer-section h4{
    font-size:14px;
    margin-bottom:14px;
    padding-bottom:8px;
    border-bottom-width:1px;
    border-bottom-color:rgba(62,166,255,.3);
    color:#e2e8f0;
    letter-spacing:.03em;
  }
  .footer-desc{
    font-size:13px;
    line-height:1.65;
    color:#94a3b8;
    max-width:none;
  }
  .footer-links{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:6px 14px;
  }
  .footer-section--products .footer-links{
    grid-template-columns:repeat(2,1fr);
  }
  .footer-links li{
    margin-bottom:4px;
  }
  .footer-links a{
    font-size:13px;
    color:#cbd5e1;
    padding:4px 0;
    display:block;
  }
  .footer-links a:hover{
    color:#ffffff;
  }
  .footer-contact{
    gap:12px;
  }
  .footer-contact-item{
    font-size:13px;
    color:#cbd5e1;
    padding:4px 0;
    align-items:flex-start;
    gap:10px;
  }
  .footer-contact-icon{
    width:32px;
    height:32px;
    font-size:13px;
    border-radius:7px;
  }
  .footer-bottom{
    margin-top:8px;
    padding:18px 16px 24px;
    background:rgba(0,0,0,.22);
    border-top-color:rgba(148,163,184,.1);
  }
  .footer-bottom-content{
    flex-direction:column;
    text-align:center;
    gap:10px;
  }
  .footer-bottom p{
    font-size:12px;
    color:#64748b;
  }
  .footer-bottom-links{
    justify-content:center;
    gap:14px;
  }
  .footer-bottom-links a{
    font-size:12px;
    color:#64748b;
  }
  .footer-bottom-links a:hover{
    color:var(--brand);
  }
  .page-hero{padding:80px 0 40px;min-height:35vh}
  .page-hero h1{font-size:36px}
  .page-hero p{font-size:18px}
  .about-intro{padding:20px 0}
  .about-content{grid-template-columns:1fr;gap:40px}
  .about-text h2{font-size:22px;line-height:1.35;letter-spacing:-.02em}
  .about-text .lead{font-size:16px}
  .about-main-img{height:300px}
  .advantages-grid{grid-template-columns:1fr;gap:24px}
  .timeline::before{left:20px}
  .timeline-item{padding-left:60px}
  .timeline-year{width:40px;height:40px;font-size:14px}
  .timeline-content{padding:20px}
  .product-layout{grid-template-columns:1fr;gap:16px}
  .product-content{gap:16px}
  .product-sidebar{
    position:static;
    padding:12px 14px 14px;
    border:none;
    border-radius:12px;
    box-shadow:none;
    background:linear-gradient(165deg,#f8fafc 0%,#f1f5f9 45%,#eef2f6 100%)
  }
  .product-sidebar-toggle{
    padding:4px 0 8px;
    gap:10px;
    border-bottom:none
  }
  .product-sidebar-toggle-label{font-size:17px;letter-spacing:-.02em}
  .product-sidebar-toggle-chevron{
    width:24px;
    height:24px;
    border:none;
    margin:0;
    opacity:1;
    display:flex;
    align-items:center;
    justify-content:center;
    transform:none;
    transition:color .2s ease
  }
  .product-sidebar-toggle-chevron::before{
    content:'+';
    font-size:22px;
    font-weight:400;
    line-height:1;
    color:#64748b;
    font-family:system-ui,-apple-system,'Segoe UI',sans-serif
  }
  .product-sidebar--nav-expanded .product-sidebar-toggle-chevron{
    margin:0;
    transform:none
  }
  .product-sidebar--nav-expanded .product-sidebar-toggle-chevron::before{
    content:'−';
    font-size:24px;
    font-weight:300
  }
  .product-sidebar .category-link.active::before{display:none}
  .product-sidebar .sidebar-title--collapsible + .product-categories{margin-top:10px}
  .product-sidebar .product-categories{gap:10px}
  .product-sidebar .category-list{gap:2px}
  .product-sidebar .category-link{
    padding:9px 11px;
    font-size:13px;
    border-radius:6px;
    transform:none
  }
  .product-sidebar .category-link:hover{transform:none}
  .product-sidebar:not(.product-sidebar--nav-expanded) .product-categories{display:none}
  .product-sidebar--nav-expanded .product-categories{display:flex}
  .product-section{
    padding:10px;
    border:none;
    border-radius:0;
    box-shadow:none;
    background:transparent
  }
  .product-section:hover{transform:none;box-shadow:none}
  .product-section--mfc:hover{box-shadow:none}
  .mfc-section-head{margin-bottom:16px;padding-bottom:12px}
  .mfc-section-head h2{font-size:18px;margin:0}
  .mfc-series-card{border:none;box-shadow:none;border-radius:0;background:#fafbfc}
  .mfc-series-card:hover{border:none;box-shadow:none}
  .mfc-series-media{background:#ffffff}
  .product-header{flex-direction:column;gap:20px;text-align:center}
  .product-icon{align-self:center}
  .product-img{width:100px;height:100px}
  .product-actions{flex-direction:column;gap:16px}
  .product-actions .btn{width:100%;min-width:auto;padding:16px 24px;font-size:16px}
  .application-showcase{grid-template-columns:1fr;gap:32px;padding:0 16px}
  .app-section{padding:32px;border-radius:20px}
  .video-page{padding-top:32px}
  .video-showcase{margin-bottom:36px}
  .video-grid{grid-template-columns:1fr;gap:16px;padding:0 8px}
  .video-card{padding:12px;border-radius:12px}
  .video-trigger-title{font-size:15px}
  .video-play-icon{width:48px;height:48px;font-size:16px}
  .video-modal{padding:10px}
  .video-modal-dialog{width:min(96vw,720px);margin:0;padding:12px}
  .video-modal-title{font-size:16px;margin:0 38px 10px 2px}
  .section-header h3{font-size:24px;padding-bottom:8px}
  .section-header h3::after{width:40px;height:2px}
  .section-desc{font-size:16px;margin-bottom:24px}
  .section-content p{font-size:15px;margin-bottom:20px;text-align:left}
  .news-list-container{padding:0 16px}
  .news-list-item{flex-direction:column;gap:16px;padding:20px}
  .news-list-image{width:100%;height:180px}
  .news-list-meta{flex-direction:column;align-items:flex-start;gap:8px}
  .news-list-title a{font-size:16px}
  .news-list-excerpt{font-size:13px;-webkit-line-clamp:3;line-clamp:3}
  .news-detail-page{padding-top:40px;padding-bottom:44px}
  .news-detail{padding:0 12px}
  .news-detail-title{font-size:24px}
  .news-detail-info{flex-direction:column;gap:8px}
  .news-detail-date{font-size:13px;padding:5px 12px}
  .news-detail-views{font-size:13px}
  .news-detail-subtitle{font-size:16px;max-width:none}
  .news-detail-img{height:220px;border-radius:8px}
  .news-detail-text>p:first-of-type{font-size:17px;margin-bottom:22px}
  .news-detail-text p{font-size:15px}
  .news-detail-text h2{font-size:19px;margin-top:2rem}
  .news-detail-text h3{font-size:17px}
  .news-detail-highlights{padding:22px 20px;margin-top:32px}
  .news-detail-highlights h3{font-size:16px}
  .news-detail-highlights li{font-size:14px;padding:10px 0 10px 24px}
  .news-detail-highlights li::before{top:10px;font-size:14px}
  .news-related-list{grid-template-columns:1fr}
  .news-related h3{font-size:20px}
  .news-related-content h4 a{font-size:15px}
  .pagination{gap:4px;margin-top:40px}
  .pagination-btn{min-width:36px;height:36px;padding:0 12px;font-size:13px}
  .pagination-btn.prev,.pagination-btn.next{padding:0 16px}
}

/* （已清理重复旧样式，保留顶部生效样式） */