*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{--primary:#0d3b66;--primary-light:#1a6fb5;--primary-dark:#082a4a;--accent:#e8672c;--accent-light:#f0893f;--text:#333;--text-light:#666;--text-lighter:#999;--bg:#fff;--bg-light:#f5f7fa;--bg-dark:#0d3b66;--border:#e0e4e8;--shadow:0 2px 12px rgba(0,0,0,.08);--radius:6px;--max-w:1200px;--header-h:72px}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text);line-height:1.7;background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:var(--primary-light);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent)}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}
.container{max-width:var(--max-w);margin:0 auto;padding:0 20px}

.top-bar,.topbar{background:var(--primary-dark);color:rgba(255,255,255,.8);font-size:.85rem;height:36px;display:flex;align-items:center}
.top-bar .container,.topbar .container{display:flex;justify-content:space-between;align-items:center}
.top-bar a,.topbar a{color:rgba(255,255,255,.8)}
.top-bar a:hover,.topbar a:hover{color:#fff}
.top-bar-left,.topbar-left,.top-bar-right,.topbar-right{display:flex;gap:20px;align-items:center}
.top-bar-left svg,.topbar-left svg,.top-bar-right svg,.topbar-right svg{width:14px;height:14px;vertical-align:middle;margin-right:4px;fill:rgba(255,255,255,.7)}
.top-bar span,.topbar span{display:flex;align-items:center;gap:4px}

.header{background:#fff;height:var(--header-h);box-shadow:var(--shadow);position:sticky;top:0;z-index:1000}
.header .container{display:flex;align-items:center;justify-content:space-between;height:100%}
.logo,.header-logo{display:flex;align-items:center;gap:10px}
.logo a{text-decoration:none}
.logo h1{font-size:1.2rem;font-weight:700;color:var(--primary);line-height:1.3}
.logo-text{font-size:1.2rem;font-weight:700;color:var(--primary);line-height:1.3}
.logo-sub{font-size:.75rem;color:var(--text-light);font-weight:400}
.logo svg{width:40px;height:40px;fill:var(--primary)}

.nav,.header-nav{display:flex;gap:4px;align-items:center}
.nav a,.nav li a,.header-nav a,.header-nav li a{padding:8px 16px;color:var(--text);font-size:.95rem;font-weight:500;border-radius:var(--radius);transition:all .2s;display:inline-block}
.nav ul{display:flex;gap:4px;align-items:center;list-style:none}
.nav a:hover,.nav li a:hover,.header-nav a:hover,.header-nav li a:hover,.nav a.active,.header-nav a.active{color:var(--primary);background:rgba(13,59,102,.06)}
.nav a.active,.header-nav a.active{font-weight:600}

.menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px}
.menu-toggle span{display:block;width:24px;height:2px;background:var(--text);margin:5px 0;transition:all .3s}

.hero{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-light) 100%);color:#fff;padding:80px 0 90px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;top:-50%;right:-20%;width:600px;height:600px;background:rgba(255,255,255,.04);border-radius:50%}
.hero::after{content:"";position:absolute;bottom:-30%;left:-10%;width:400px;height:400px;background:rgba(255,255,255,.03);border-radius:50%}
.hero .container{position:relative;z-index:1}
.hero h1{font-size:2.6rem;font-weight:700;margin-bottom:16px;line-height:1.3}
.hero h1 span{color:var(--accent-light)}
.hero p,.hero-desc,.hero-subtitle{font-size:1.1rem;opacity:.9;max-width:640px;line-height:1.8;margin-bottom:12px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-top:20px}

.btn{display:inline-flex;align-items:center;gap:6px;padding:12px 28px;border-radius:var(--radius);font-size:1rem;font-weight:600;cursor:pointer;border:none;transition:all .25s;text-align:center}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-light);color:#fff;transform:translateY(-1px);box-shadow:0 4px 16px rgba(232,103,44,.3)}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.5)}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.1);color:#fff}
.btn-primary-solid{background:var(--primary);color:#fff}
.btn-primary-solid:hover{background:var(--primary-light);color:#fff}
.btn-secondary{background:rgba(255,255,255,.15);color:#fff;border:2px solid rgba(255,255,255,.4)}
.btn-secondary:hover{background:rgba(255,255,255,.25);color:#fff}

.section{padding:70px 0}
.section-light{background:var(--bg-light)}
.section-title{text-align:center;margin-bottom:48px;font-size:2rem;font-weight:700;color:var(--primary)}
.section-title h2{font-size:2rem;font-weight:700;color:var(--primary);margin-bottom:10px}
.section-title p{color:var(--text-light);font-size:1.05rem;font-weight:400}

.advantages,.advantages-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.adv-card,.advantage-card,.advantage-item{background:#fff;border-radius:var(--radius);padding:32px 24px;text-align:center;box-shadow:var(--shadow);transition:transform .25s}
.adv-card:hover,.advantage-card:hover,.advantage-item:hover{transform:translateY(-4px)}
.adv-icon,.advantage-icon{width:64px;height:64px;margin:0 auto 16px;background:linear-gradient(135deg,var(--primary),var(--primary-light));border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:28px;color:#fff}
.adv-card h3,.advantage-card h3,.advantage-item h3{font-size:1.15rem;font-weight:600;margin-bottom:10px;color:var(--primary)}
.adv-card p,.advantage-card p,.advantage-item p{color:var(--text-light);font-size:.92rem;line-height:1.7}

.categories-grid,.product-categories{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.category-card{background:#fff;border-radius:var(--radius);padding:32px 20px;text-align:center;box-shadow:var(--shadow);transition:all .25s;display:flex;flex-direction:column;align-items:center;gap:12px}
.category-card:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(0,0,0,.12)}
.category-card h3{font-size:1.05rem;font-weight:600;color:var(--primary)}
.category-icon{width:56px;height:56px;background:var(--bg-light);border-radius:12px;display:flex;align-items:center;justify-content:center;color:var(--primary)}
.category-icon svg{width:32px;height:32px;stroke:var(--primary)}

.product-grid,.products-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.product-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:all .25s;border:1px solid var(--border);height:100%}
.product-card:hover{box-shadow:0 8px 24px rgba(0,0,0,.12)}
.product-card-img,.product-img{height:200px;background:var(--bg-light);display:flex;align-items:center;justify-content:center;overflow:hidden}
.product-card-img img,.product-img img{width:100%;height:100%;object-fit:cover}
.product-card-img .placeholder{width:64px;height:64px;fill:var(--text-lighter);opacity:.5}
.product-card-img:has(.placeholder){background:var(--bg-light)}
.product-card-body,.product-info{padding:20px}
.product-card-body h3,.product-info h3{font-size:1.1rem;font-weight:600;margin-bottom:8px;color:var(--primary)}
.product-card-body h3 a,.product-info h3 a{color:inherit}
.product-card-body p,.product-info p{color:var(--text-light);font-size:.9rem;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.product-card-footer{padding:0 20px 16px;display:flex;justify-content:space-between;align-items:center}
.product-card-footer a{font-size:.9rem;font-weight:500}
.product-card-link{display:block;text-decoration:none;color:inherit;border-radius:var(--radius)}
.product-card-link:hover{color:inherit}
.product-card-link:hover .product-card{transform:translateY(-3px);box-shadow:0 8px 24px rgba(0,0,0,.12)}

.news-list{display:flex;flex-direction:column;gap:16px}
.news-list li{list-style:none}
.news-list a,.news-item{display:flex;gap:20px;background:#fff;border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);transition:all .25s;border:1px solid var(--border);text-decoration:none;color:var(--text)}
.news-list a:hover,.news-item:hover{box-shadow:0 6px 20px rgba(0,0,0,.1);color:var(--text)}
.news-date{flex-shrink:0;text-align:center;min-width:70px;background:var(--primary);border-radius:var(--radius);padding:12px 8px;color:#fff}
.news-date .day{font-size:1.8rem;font-weight:700;line-height:1}
.news-date .month{font-size:.8rem;opacity:.8}
.news-info,.news-content,.news-body{flex:1}
.news-info h3,.news-content h3,.news-body h3{font-size:1.1rem;font-weight:600;margin-bottom:8px}
.news-info h3 a,.news-content h3 a,.news-body h3 a{color:var(--text)}
.news-info h3 a:hover,.news-content h3 a:hover,.news-body h3 a:hover{color:var(--primary)}
.news-info p,.news-content p,.news-body p{color:var(--text-light);font-size:.92rem;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-more{font-size:.9rem;font-weight:500;margin-top:8px;display:inline-block}

.news-grid,.news-card{display:flex;flex-direction:column;gap:20px}
.news-card{background:#fff;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);border:1px solid var(--border);transition:all .25s}
.news-card:hover{box-shadow:0 6px 20px rgba(0,0,0,.1)}
.news-card .news-date{display:inline-block;background:var(--bg-light);color:var(--primary);padding:4px 12px;border-radius:20px;font-size:.85rem;margin-bottom:8px}

.cta,.cta-section,.cta-content{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;padding:60px 0;text-align:center}
.cta h2,.cta-section h2{font-size:2rem;font-weight:700;margin-bottom:12px}
.cta p,.cta-section p{font-size:1.1rem;opacity:.9;margin-bottom:28px}
.cta .btn,.cta-section .btn{font-size:1.05rem;padding:14px 36px}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

.faq-section,.faq-list{max-width:800px;margin:0 auto}
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:100%}
.faq-item{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.faq-q,.faq-question{padding:16px 20px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;background:#fff;transition:background .2s;font-size:1rem;gap:12px}
.faq-q:hover,.faq-question:hover{background:var(--bg-light)}
.faq-q svg,.faq-question svg{width:18px;height:18px;transition:transform .3s;flex-shrink:0;fill:var(--text-light)}
.faq-item.open .faq-q svg,.faq-item.open .faq-question svg{transform:rotate(180deg)}
.faq-a,.faq-answer{padding:0 20px;max-height:0;overflow:hidden;transition:all .3s ease;color:var(--text-light);line-height:1.8;font-size:.95rem}
.faq-item.open .faq-a,.faq-item.open .faq-answer{padding:0 20px 16px;max-height:500px}

.breadcrumb{padding:16px 0;font-size:.9rem;color:var(--text-light);border-bottom:1px solid var(--border);background:var(--bg-light)}
.breadcrumb a{color:var(--text-light)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{margin:0 8px}

.page-header{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;padding:48px 0;text-align:center}
.page-header h1,.page-header h2{font-size:2rem;font-weight:700;margin-bottom:8px}
.page-header p{opacity:.85;font-size:1.05rem}

.about-content,.about-section .about-content{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;padding:60px 0}
.about-text h2,.about-text h3{font-size:1.6rem;color:var(--primary);margin-bottom:16px}
.about-text p{color:var(--text-light);line-height:1.8;margin-bottom:14px}
.about-image{display:flex;align-items:center;justify-content:center}

.stats-section{padding:60px 0;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff}
.stats-grid,.about-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:32px}
.stat,.stat-item{text-align:center}
.stat-num,.stat-number{font-size:2.4rem;font-weight:700;color:var(--accent);line-height:1}
.stats-section .stat-number{color:#fff}
.stat-number span{font-size:1.6rem}
.stat-label{font-size:.9rem;color:rgba(255,255,255,.8);margin-top:4px}
.stat-item .stat-label{font-size:.95rem;margin-top:8px}

.advantages-section,.timeline-section{padding:60px 0}

.timeline{max-width:700px;margin:0 auto;position:relative;padding-left:32px}
.timeline::before{content:"";position:absolute;left:8px;top:0;bottom:0;width:2px;background:var(--border)}
.timeline-item{position:relative;margin-bottom:32px;padding-left:24px}
.timeline-item::before{content:"";position:absolute;left:-26px;top:6px;width:14px;height:14px;background:var(--primary);border-radius:50%;border:3px solid #fff;box-shadow:0 0 0 2px var(--primary)}
.timeline-year{font-size:.9rem;color:var(--accent);font-weight:600;margin-bottom:4px}
.timeline-content h3{font-size:1.05rem;font-weight:600;color:var(--primary);margin-bottom:4px}
.timeline-content p{color:var(--text-light);font-size:.92rem}

.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.contact-info,.contact-info-list{display:flex;flex-direction:column;gap:24px}
.contact-info h2{margin-bottom:20px;font-size:1.4rem;color:var(--primary)}
.contact-list{display:flex;flex-direction:column;gap:20px}
.contact-list li{display:flex;gap:16px;align-items:flex-start}
.contact-list svg{width:24px;height:24px;fill:var(--primary);flex-shrink:0;margin-top:2px;stroke:var(--primary)}
.contact-list strong{display:block;font-weight:600;margin-bottom:4px;font-size:1rem}
.contact-list p{color:var(--text-light);font-size:.95rem}
.contact-form-wrap h2{margin-bottom:20px;font-size:1.4rem;color:var(--primary)}
.contact-form{display:flex;flex-direction:column;gap:16px}
.contact-form label{font-weight:500;margin-bottom:4px;display:block}
.contact-form input,.contact-form textarea,.contact-form select{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:var(--radius);font-size:.95rem;font-family:inherit;transition:border-color .2s}
.contact-form input:focus,.contact-form textarea:focus,.contact-form select:focus{outline:none;border-color:var(--primary-light);box-shadow:0 0 0 3px rgba(26,111,181,.1)}
.contact-form textarea{min-height:140px;resize:vertical}
.form-group{display:flex;flex-direction:column}
.required{color:var(--accent)}

.map-section{padding:40px 0;background:var(--bg-light)}
.map-placeholder{background:var(--bg-light);border-radius:var(--radius);height:300px;display:flex;align-items:center;justify-content:center;color:var(--text-lighter);font-size:1.1rem;border:2px dashed var(--border)}
.map-note{text-align:center;color:var(--text-light);font-size:.95rem;margin-top:16px}

.sidebar{display:grid;grid-template-columns:260px 1fr;gap:32px}
.side-nav{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;align-self:start;position:sticky;top:calc(var(--header-h) + 20px)}
.side-nav h3{background:var(--primary);color:#fff;padding:16px 20px;font-size:1.05rem}
.side-nav a{display:block;padding:12px 20px;color:var(--text);border-bottom:1px solid var(--border);font-size:.95rem;transition:all .2s}
.side-nav a:hover,.side-nav a.active{color:var(--primary);background:var(--bg-light);padding-left:24px}

.footer{background:var(--primary-dark);color:rgba(255,255,255,.75);padding:48px 0 0}
.footer-grid,.footer-content{display:grid;grid-template-columns:repeat(3,1fr);gap:40px}
.footer h3,.footer h4{color:#fff;font-size:1.05rem;margin-bottom:16px;font-weight:600}
.footer p{font-size:.9rem;line-height:1.7}
.footer-links{list-style:none;display:flex;flex-direction:column;gap:8px}
.footer-links a{color:rgba(255,255,255,.7);font-size:.9rem}
.footer-links a:hover{color:#fff}
.footer ul{list-style:none;display:flex;flex-direction:column;gap:6px}
.footer ul li{font-size:.9rem}
.footer ul li a{color:rgba(255,255,255,.7)}
.footer ul li a:hover{color:#fff}
.footer-contact p{display:flex;align-items:center;gap:8px;margin-bottom:8px;font-size:.9rem}
.footer-contact svg{width:16px;height:16px;fill:rgba(255,255,255,.6);flex-shrink:0}
.footer-info p{font-size:.9rem;line-height:1.7;margin-bottom:6px}
.footer-logo h3{color:#fff;font-size:1.1rem;margin-bottom:12px}
.footer-nav h3,.footer-products h3{color:#fff;font-size:1.05rem;margin-bottom:12px}
.footer-col{display:flex;flex-direction:column;gap:8px}
.footer-col h3{color:#fff;font-size:1.05rem;margin-bottom:8px}
.footer-bottom{margin-top:32px;padding:16px 0;border-top:1px solid rgba(255,255,255,.1);text-align:center;font-size:.85rem;color:rgba(255,255,255,.5)}
.footer-bottom a{color:rgba(255,255,255,.5)}
.footer-bottom a:hover{color:#fff}

.back-top{position:fixed;bottom:32px;right:32px;width:44px;height:44px;background:var(--primary);color:#fff;border:none;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transition:all .3s;box-shadow:0 4px 12px rgba(0,0,0,.2);z-index:999}
.back-top.visible{opacity:1;visibility:visible}
.back-top:hover{background:var(--accent)}
.back-top svg{width:20px;height:20px;fill:#fff}

@media(max-width:1024px){
  .advantages,.advantages-grid{grid-template-columns:repeat(2,1fr)}
  .product-grid,.products-grid,.categories-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid,.footer-content{grid-template-columns:repeat(2,1fr)}
  .about-content,.about-section .about-content{grid-template-columns:1fr}
  .about-stats,.stats-grid{grid-template-columns:repeat(2,1fr)}
  .sidebar{grid-template-columns:1fr}
  .side-nav{position:static}
  .contact-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
  .hero h1{font-size:1.8rem}
  .hero p,.hero-desc,.hero-subtitle{font-size:1rem}
  .nav,.header-nav{display:none;position:absolute;top:var(--header-h);left:0;right:0;background:#fff;flex-direction:column;padding:12px;box-shadow:var(--shadow);border-top:1px solid var(--border)}
  .nav.open,.header-nav.open{display:flex}
  .nav ul{flex-direction:column;width:100%}
  .nav a,.nav li a{display:block;padding:12px 16px;width:100%}
  .menu-toggle{display:block}
  .top-bar,.topbar{display:none}
  .product-grid,.products-grid,.categories-grid{grid-template-columns:1fr}
  .advantages,.advantages-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid,.footer-content{grid-template-columns:1fr}
  .about-stats,.stats-grid{grid-template-columns:repeat(2,1fr)}
  .section{padding:48px 0}
  .page-header{padding:32px 0}
  .hero{padding:50px 0 60px}
  .news-list a{flex-direction:column;gap:12px}
}