/* 钢蓝工业风 (352862.com) */
:root{
  --c-bg:#1c2331;
  --c-bg-2:#2d3a4e;
  --c-steel:#4a6580;
  --c-steel-light:#7d93a8;
  --c-primary:#1c2331;
  --c-accent:#ff6b35;
  --c-accent-2:#ff8555;
  --c-text:#1c2331;
  --c-text-light:#5a6378;
  --c-text-inv:#f5f7fa;
  --c-text-inv-2:#a8b5c8;
  --c-border:#dde2ea;
  --c-card:#ffffff;
  --c-section-alt:#f5f7fa;
  --shadow:0 6px 18px rgba(28,35,49,.10);
  --shadow-lg:0 14px 40px rgba(28,35,49,.16);
  --radius:4px;
  --metal-gradient:linear-gradient(180deg,#ffffff 0%,#e8ecf1 48%,#dde2ea 50%,#f0f3f7 100%);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Roboto","Helvetica Neue","PingFang SC","Microsoft YaHei",Arial,sans-serif;
  color:var(--c-text);
  background:#fff;
  line-height:1.65;
  font-size:15px;
  letter-spacing:.2px;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* 顶部条 */
.top-bar{background:#0f141d;color:var(--c-text-inv-2);font-size:12px;padding:8px 0;font-family:"Roboto Mono","Consolas",monospace;letter-spacing:.5px;border-bottom:2px solid var(--c-accent)}
.top-bar-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px}
.top-bar-ticker{display:flex;align-items:center;gap:6px}
.top-bar-ticker .dot{width:6px;height:6px;background:var(--c-accent);animation:pulse 1.4s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}
.top-bar-links a{color:var(--c-accent-2);margin:0 2px}

/* header */
.site-header{background:#fff;border-bottom:1px solid var(--c-border);position:sticky;top:0;z-index:100;box-shadow:0 1px 0 rgba(28,35,49,.03)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:74px;gap:24px}
.brand{display:flex;align-items:center;gap:10px}
.brand-logo{height:38px;width:auto}
.brand-name{font-size:22px;font-weight:700;letter-spacing:1px;color:var(--c-primary);text-transform:uppercase}
.main-nav{display:flex;gap:30px;align-items:center}
.nav-link{font-size:14px;color:var(--c-text);font-weight:500;padding:6px 0;position:relative;transition:color .2s;text-transform:uppercase;letter-spacing:.5px}
.nav-link:hover,.nav-link.active{color:var(--c-accent)}
.nav-link.active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--c-accent)}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 28px;border-radius:var(--radius);font-weight:600;font-size:14px;cursor:pointer;border:none;transition:all .2s;text-transform:uppercase;letter-spacing:.5px}
.btn-primary{background:linear-gradient(180deg,#ff7d4d 0%,#ff6b35 100%);color:#fff;border:1px solid #ff6b35;box-shadow:inset 0 1px 0 rgba(255,255,255,.2),0 2px 6px rgba(255,107,53,.3)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:inset 0 1px 0 rgba(255,255,255,.2),0 6px 16px rgba(255,107,53,.45)}
.btn-sm{padding:9px 20px;font-size:13px}
.btn-ghost{background:transparent;border:1px solid var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary);color:var(--c-text-inv)}
.btn-light{background:#fff;color:var(--c-primary);border:1px solid #fff}
.btn-ghost-light{background:transparent;border:1px solid rgba(255,255,255,.5);color:#fff}
.btn-ghost-light:hover{background:rgba(255,255,255,.1)}

/* Hero */
.hero{background:linear-gradient(135deg,#0f141d 0%,#1c2331 50%,#2d3a4e 100%);color:var(--c-text-inv);padding:90px 0;position:relative;overflow:hidden;border-bottom:1px solid var(--c-accent)}
.hero::before{content:"";position:absolute;top:0;right:0;width:60%;height:100%;background:radial-gradient(circle at 80% 30%,rgba(255,107,53,.12),transparent 50%);pointer-events:none}
.hero::after{content:"";position:absolute;bottom:0;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--c-accent),transparent)}
.hero-inner{display:grid;grid-template-columns:1.3fr 1fr;gap:60px;align-items:center;position:relative}
.hero-tag{display:inline-block;background:rgba(255,107,53,.12);color:var(--c-accent-2);padding:6px 14px;border:1px solid rgba(255,107,53,.3);font-size:12px;font-weight:600;margin-bottom:20px;text-transform:uppercase;letter-spacing:1.5px}
.hero-title{font-size:42px;line-height:1.2;font-weight:700;margin-bottom:18px;color:#fff;letter-spacing:-.5px}
.hero-desc{font-size:15px;color:var(--c-text-inv-2);margin-bottom:30px;max-width:560px}
.hero-actions{display:flex;gap:14px;margin-bottom:40px}
.hero-stats{display:flex;gap:36px;list-style:none;flex-wrap:wrap}
.hero-stats li{display:flex;flex-direction:column;border-left:2px solid var(--c-accent);padding-left:14px}
.hero-stats strong{font-size:24px;color:var(--c-accent);font-weight:700;font-family:"Roboto Mono",monospace}
.hero-stats span{font-size:12px;color:var(--c-text-inv-2);text-transform:uppercase;letter-spacing:1px}
.hero-visual{display:flex;justify-content:center}
.hero-svg{width:100%;max-width:340px;height:auto}

/* trust strip */
.trust-strip{background:#0f141d;padding:26px 0;color:var(--c-text-inv-2);border-top:1px solid rgba(255,255,255,.05)}
.trust-inner{display:flex;justify-content:space-between;flex-wrap:wrap;gap:24px}
.trust-item{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--c-steel);padding-left:12px}
.trust-item strong{color:var(--c-accent);font-size:16px;font-weight:700;font-family:"Roboto Mono",monospace;letter-spacing:1px}
.trust-item span{font-size:11px;text-transform:uppercase;letter-spacing:.5px}

/* section */
.section{padding:80px 0}
.section-alt{background:var(--c-section-alt)}
.section-head{text-align:center;max-width:720px;margin:0 auto 50px}
.section-tag{display:inline-block;color:var(--c-accent);font-size:12px;font-weight:700;letter-spacing:3px;text-transform:uppercase;margin-bottom:10px}
.section-title{font-size:32px;font-weight:700;color:var(--c-primary);margin-bottom:14px;letter-spacing:-.3px}
.section-desc{font-size:15px;color:var(--c-text-light)}

/* products */
.products-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.product-card{background:var(--metal-gradient);border:1px solid var(--c-border);border-radius:var(--radius);padding:30px 24px;transition:all .3s;box-shadow:var(--shadow);position:relative;overflow:hidden}
.product-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--c-accent);transform:scaleX(0);transform-origin:left;transition:transform .3s}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.product-card:hover::before{transform:scaleX(1)}
.product-icon{width:60px;height:60px;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:18px;margin-bottom:18px;font-family:"Roboto Mono",monospace;letter-spacing:1px;box-shadow:inset 0 1px 0 rgba(255,255,255,.2),0 2px 6px rgba(0,0,0,.15)}
.product-card h3{font-size:18px;color:var(--c-primary);margin-bottom:10px;text-transform:uppercase;letter-spacing:.5px}
.product-card p{font-size:13px;color:var(--c-text-light);margin-bottom:16px;line-height:1.6}
.product-card ul{list-style:none}
.product-card li{font-size:12px;color:var(--c-text);padding:4px 0;padding-left:18px;position:relative}
.product-card li::before{content:"›";position:absolute;left:0;color:var(--c-accent);font-weight:700;font-family:monospace}

/* platform */
.platform-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.platform-card{background:#fff;border-radius:var(--radius);padding:28px 24px;border:1px solid var(--c-border);border-top:3px solid var(--c-steel);transition:all .3s}
.platform-card:hover{border-top-color:var(--c-accent);transform:translateY(-4px);box-shadow:var(--shadow)}
.platform-card h3{font-size:17px;color:var(--c-primary);margin-bottom:10px;font-weight:600}
.platform-card p{font-size:13px;color:var(--c-text-light);margin-bottom:14px}
.link-arrow{color:var(--c-accent);font-weight:600;font-size:13px;text-transform:uppercase;letter-spacing:.5px}
.link-arrow:hover{text-decoration:underline}

/* about */
.about-inner{display:grid;grid-template-columns:1.2fr 1fr;gap:60px;align-items:center}
.about-text p{color:var(--c-text-light);margin-bottom:14px}
.about-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;list-style:none;margin-top:24px}
.about-list li{background:var(--metal-gradient);border:1px solid var(--c-border);padding:18px;text-align:center;border-left:3px solid var(--c-accent)}
.about-list strong{display:block;font-size:24px;color:var(--c-primary);font-weight:700;font-family:"Roboto Mono",monospace}
.about-list li::after{content:attr(data-label)}
.infra-card{background:linear-gradient(135deg,#0f141d,#2d3a4e);border:1px solid var(--c-steel);padding:50px 36px;color:#fff;text-align:center;position:relative;height:320px;overflow:hidden}
.infra-nodes{position:relative;width:100%;height:100%}
.infra-nodes .node{position:absolute;width:14px;height:14px;background:var(--c-accent);border:2px solid #fff;box-shadow:0 0 0 4px rgba(255,107,53,.25);animation:float 3s ease-in-out infinite}
.infra-nodes .node-2{animation-delay:.5s}
.infra-nodes .node-3{animation-delay:1s}
.infra-nodes .node-4{animation-delay:1.5s}
.infra-nodes .node-5{animation-delay:2s}
.infra-nodes .node-6{animation-delay:2.5s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.infra-lines{position:absolute;top:0;left:0;width:100%;height:100%;opacity:.5}
.infra-title{position:absolute;bottom:20px;left:0;right:0;font-size:12px;color:var(--c-text-inv-2);font-family:"Roboto Mono",monospace;letter-spacing:1.5px}

/* faq */
.faq-list{max-width:840px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--c-border);border-left:3px solid var(--c-steel);margin-bottom:8px;overflow:hidden;transition:border-color .2s}
.faq-item[open]{border-left-color:var(--c-accent)}
.faq-item summary{padding:18px 24px;cursor:pointer;font-weight:600;font-size:15px;color:var(--c-primary);list-style:none;display:flex;justify-content:space-between;align-items:center;letter-spacing:.3px}
.faq-item summary::after{content:"+";color:var(--c-accent);font-size:22px;font-weight:300;font-family:monospace}
.faq-item[open] summary::after{content:"-"}
.faq-answer{padding:0 24px 20px;color:var(--c-text-light);font-size:14px;line-height:1.7}

/* latest news */
.latest-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.latest-card{background:var(--metal-gradient);border:1px solid var(--c-border);border-radius:var(--radius);padding:22px;transition:all .3s;position:relative;overflow:hidden}
.latest-card::before{content:"";position:absolute;top:0;left:0;width:3px;height:100%;background:var(--c-accent);transform:scaleY(0);transform-origin:top;transition:transform .3s}
.latest-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.latest-card:hover::before{transform:scaleY(1)}
.latest-card h3{font-size:15px;line-height:1.5;color:var(--c-primary);margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-weight:600}
.latest-card h3:hover{color:var(--c-accent)}
.latest-card p{font-size:13px;color:var(--c-text-light);margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.latest-card time{font-size:11px;color:var(--c-text-light);font-family:"Roboto Mono",monospace;letter-spacing:.5px}
.section-more{text-align:center;margin-top:36px}

/* CTA */
.cta{background:linear-gradient(135deg,#0f141d,#1c2331);color:#fff;padding:70px 0;text-align:center;position:relative;border-top:1px solid var(--c-accent)}
.cta::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--c-accent),transparent)}
.cta h2{font-size:30px;margin-bottom:12px;font-weight:700;letter-spacing:-.3px}
.cta p{color:var(--c-text-inv-2);margin-bottom:26px;font-family:"Roboto Mono",monospace;letter-spacing:.5px}
.cta-actions{display:flex;gap:14px;justify-content:center}

/* footer */
.site-footer{background:#0f141d;color:var(--c-text-inv-2);padding:60px 0 0;border-top:2px solid var(--c-accent)}
.footer-inner{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px}
.footer-brand .footer-logo{display:block;margin-bottom:14px;color:#fff}
.footer-brand p{font-size:13px;margin-bottom:10px}
.footer-disclaimer{font-size:11px;color:#5a6f8c;line-height:1.6}
.footer-col h4{color:#fff;font-size:13px;margin-bottom:14px;font-weight:600;text-transform:uppercase;letter-spacing:1.5px}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:8px;padding-left:12px;position:relative}
.footer-col li::before{content:"›";position:absolute;left:0;color:var(--c-accent);font-weight:700}
.footer-col a{font-size:13px;color:var(--c-text-inv-2);transition:color .2s}
.footer-col a:hover{color:var(--c-accent)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.06);padding:20px 0;text-align:center;font-size:12px;color:#5a6f8c;font-family:"Roboto Mono",monospace;letter-spacing:.5px}

/* ====== 新闻页样式 ====== */
.news-loading,.news-empty,.news-error{padding:40px;text-align:center;color:var(--c-text-light);font-family:"Roboto Mono",monospace;letter-spacing:.5px}
.news-list{list-style:none}
.news-item{border-bottom:1px solid var(--c-border);padding:22px 0;transition:background .2s;border-left:3px solid transparent;padding-left:14px}
.news-item:hover{background:var(--c-section-alt);border-left-color:var(--c-accent)}
.news-item-link{display:flex;align-items:baseline;gap:14px;margin-bottom:6px}
.news-date{color:var(--c-accent);font-size:12px;font-weight:600;white-space:nowrap;flex-shrink:0;font-family:"Roboto Mono",monospace;letter-spacing:.5px}
.news-title{font-size:16px;font-weight:600;color:var(--c-primary);line-height:1.5}
.news-item:hover .news-title{color:var(--c-accent)}
.news-preview{color:var(--c-text-light);font-size:13px;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;padding-left:74px}
.pagination{display:flex;justify-content:center;gap:6px;margin-top:40px;flex-wrap:wrap}
.pagination a,.pagination span{display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:40px;padding:0 12px;border:1px solid var(--c-border);font-size:14px;color:var(--c-text);font-family:"Roboto Mono",monospace;transition:all .2s}
.pagination a:hover{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
.pagination .page-cur{background:var(--c-accent);color:#fff;border-color:var(--c-accent);font-weight:700}

/* article */
.news-article{background:#fff;padding:40px;border:1px solid var(--c-border);border-top:3px solid var(--c-accent)}
.article-title{font-size:28px;line-height:1.4;color:var(--c-primary);margin-bottom:18px;font-weight:700;letter-spacing:-.3px}
.article-meta{display:flex;gap:18px;color:var(--c-text-light);font-size:13px;padding-bottom:18px;border-bottom:1px solid var(--c-border);margin-bottom:24px;align-items:center;font-family:"Roboto Mono",monospace;letter-spacing:.5px}
.article-content{font-size:16px;line-height:1.9;color:var(--c-text)}
.article-content p{margin-bottom:18px}
.article-content p:first-child::first-letter{font-size:36px;font-weight:700;color:var(--c-accent);float:left;line-height:1;margin-right:8px;margin-top:4px}
.article-footer{margin-top:30px;padding-top:20px;border-top:1px solid var(--c-border)}
.back-link{color:var(--c-accent);font-weight:600;text-transform:uppercase;letter-spacing:.5px;font-size:13px}

/* page banner */
.page-banner{background:linear-gradient(135deg,#0f141d,#2d3a4e);color:#fff;padding:60px 0;text-align:center;border-bottom:2px solid var(--c-accent)}
.page-banner h1{font-size:32px;margin-bottom:10px;font-weight:700;letter-spacing:-.3px}
.page-banner p{color:var(--c-text-inv-2);font-family:"Roboto Mono",monospace;letter-spacing:.5px}
.breadcrumb{font-size:12px;color:var(--c-text-inv-2);margin-top:14px;font-family:"Roboto Mono",monospace;letter-spacing:.5px}
.breadcrumb a{color:var(--c-accent-2)}

/* news layout */
.news-page-main{padding:60px 0}
.news-page-layout{display:grid;grid-template-columns:1fr 280px;gap:40px;align-items:start}
.news-sidebar{background:#fff;border:1px solid var(--c-border);padding:24px;position:sticky;top:96px;border-top:3px solid var(--c-accent)}
.news-sidebar h3{font-size:13px;color:var(--c-primary);margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--c-border);text-transform:uppercase;letter-spacing:1.5px;font-weight:700}
.news-sidebar ul{list-style:none}
.news-sidebar li{padding:8px 0;border-bottom:1px dashed var(--c-border);position:relative;padding-left:14px}
.news-sidebar li::before{content:"›";position:absolute;left:0;color:var(--c-accent);font-weight:700}
.news-sidebar a{font-size:13px;line-height:1.5;color:var(--c-text)}
.news-sidebar a:hover{color:var(--c-accent)}

/* responsive */
@media (max-width:960px){
  .hero-inner,.about-inner,.news-page-layout{grid-template-columns:1fr}
  .products-grid,.platform-grid,.latest-grid{grid-template-columns:repeat(2,1fr)}
  .footer-inner{grid-template-columns:repeat(2,1fr)}
  .main-nav{display:none}
  .hero-title{font-size:30px}
  .section-title{font-size:26px}
  .hero-stats{gap:18px}
}
@media (max-width:600px){
  .products-grid,.platform-grid,.latest-grid,.footer-inner{grid-template-columns:1fr}
  .top-bar-links{display:none}
  .hero{padding:50px 0}
  .hero-title{font-size:24px}
  .section{padding:50px 0}
  .news-article{padding:20px 16px}
  .article-title{font-size:22px;line-height:1.4}
  .article-meta{flex-direction:column;align-items:flex-start;gap:6px}
  .article-content{font-size:15px;line-height:1.8}
  .article-content p{margin-bottom:14px}
  .news-page-layout{grid-template-columns:1fr !important}
  .news-sidebar{position:static !important;margin-top:30px}
  .news-item-link{flex-direction:column;align-items:flex-start;gap:4px}
  .news-preview{padding-left:0}
  .news-title{font-size:15px}
  .pagination{gap:4px}
  .pagination a,.pagination span{min-width:36px;height:36px;font-size:13px;padding:0 8px}
}