:root{
  --red:#e51f24;
  --red-dark:#bd1117;
  --ink:#111827;
  --ink-2:#243041;
  --muted:#667085;
  --line:#e6e9ee;
  --paper:#ffffff;
  --soft:#f5f7fa;
  --soft-red:#fff3f3;
  --shadow:0 18px 55px rgba(15,23,42,.10);
  --radius:18px;
  --container:min(1200px,calc(100% - 40px));
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button,input,textarea,select{font:inherit}
.container{width:var(--container);margin:auto}
.section{padding:88px 0}
.section-soft{background:var(--soft)}
.section-dark{background:#101722;color:#fff}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:13px;letter-spacing:2px;color:var(--red);font-weight:700;text-transform:uppercase}
.eyebrow:before{content:"";width:28px;height:2px;background:var(--red)}
.section-title{margin:12px 0 12px;font-size:clamp(30px,4vw,46px);line-height:1.2;letter-spacing:-1px}
.section-desc{max-width:680px;margin:0;color:var(--muted);font-size:17px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;margin-bottom:38px}
.section-head .section-desc{max-width:560px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;height:50px;padding:0 24px;border:1px solid transparent;border-radius:6px;font-weight:700;transition:.25s ease;cursor:pointer}
.btn-primary{background:var(--red);color:#fff;box-shadow:0 10px 25px rgba(229,31,36,.25)}
.btn-primary:hover{background:var(--red-dark);transform:translateY(-2px)}
.btn-outline{border-color:rgba(255,255,255,.55);color:#fff;background:rgba(255,255,255,.06)}
.btn-outline:hover{background:#fff;color:var(--ink)}
.btn-light{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-light:hover{border-color:var(--red);color:var(--red)}
.link-arrow{display:inline-flex;align-items:center;gap:8px;color:var(--red);font-weight:700}
.link-arrow span{transition:.2s}
.link-arrow:hover span{transform:translateX(4px)}

/* Header */
.topbar{background:#0e1520;color:#cfd5df;font-size:13px}
.topbar .container{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.topbar-right{display:flex;gap:22px;white-space:nowrap}
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid rgba(230,233,238,.9)}
.navbar{min-height:82px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:flex;align-items:center;min-width:360px}
.brand-logo{width:76px;height:58px;object-fit:contain;margin-right:13px}
.brand-cn{font-size:19px;font-weight:800;letter-spacing:.2px;white-space:nowrap}
.brand-en{font-size:9px;letter-spacing:.55px;color:#7a8492;text-transform:uppercase;margin-top:2px}
.nav{display:flex;align-items:center;justify-content:flex-end;gap:4px;flex-wrap:wrap}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:5px;padding:28px 15px;font-size:15px;font-weight:650;white-space:nowrap;position:relative}
.nav-link:after{content:"";position:absolute;left:15px;right:15px;bottom:18px;height:2px;background:var(--red);transform:scaleX(0);transition:.2s}
.nav-link:hover,.nav-link.active{color:var(--red)}
.nav-link:hover:after,.nav-link.active:after{transform:scaleX(1)}
.dropdown{position:absolute;top:74px;left:50%;transform:translate(-50%,12px);width:650px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:12px;padding:22px;display:grid;grid-template-columns:repeat(2,1fr);gap:8px;opacity:0;visibility:hidden;transition:.2s}
.nav-item:hover .dropdown{opacity:1;visibility:visible;transform:translate(-50%,0)}
.dropdown a{padding:14px 15px;border-radius:8px;display:flex;gap:12px;align-items:flex-start}
.dropdown a:hover{background:var(--soft-red)}
.dropdown strong{display:block;font-size:15px}
.dropdown small{display:block;color:var(--muted);font-size:12px;margin-top:2px}
.dropdown-icon{width:34px;height:34px;border-radius:8px;display:grid;place-items:center;background:var(--soft-red);color:var(--red);flex:none}
.nav-cta{height:42px;padding:0 18px;margin-left:8px}
.menu-btn{display:none;border:0;background:transparent;width:42px;height:42px;font-size:25px;cursor:pointer}

/* Hero */
.hero{min-height:690px;position:relative;display:flex;align-items:center;color:#fff;overflow:hidden;background:#101722}
.hero:before{content:"";position:absolute;inset:0;background:url('../images/hero.jpg') center/cover no-repeat;transform:scale(1.02)}
.hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(4,9,16,.88) 0%,rgba(4,9,16,.66) 42%,rgba(4,9,16,.15) 75%),linear-gradient(0deg,rgba(9,14,22,.4),transparent 50%)}
.hero .container{position:relative;z-index:1;padding:90px 0}
.hero-kicker{display:flex;align-items:center;gap:12px;font-size:15px;letter-spacing:3px;color:#ff9da0;font-weight:700}
.hero-kicker:before{content:"";width:45px;height:2px;background:var(--red)}
.hero h1{font-size:clamp(44px,6vw,78px);line-height:1.08;margin:18px 0 22px;max-width:820px;letter-spacing:-2px}
.hero h1 em{font-style:normal;color:#ff4449}
.hero p{font-size:19px;max-width:660px;color:#eef1f5;margin:0 0 34px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-panel{position:absolute;right:5%;bottom:44px;z-index:2;background:rgba(255,255,255,.11);border:1px solid rgba(255,255,255,.2);backdrop-filter:blur(14px);padding:20px 24px;border-radius:12px;display:flex;gap:30px}
.hero-panel strong{display:block;font-size:28px;line-height:1.1}
.hero-panel span{font-size:12px;color:#d8dee7}

/* cards */
.stats{margin-top:-44px;position:relative;z-index:3}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-radius:14px;box-shadow:var(--shadow);overflow:hidden}
.stat{padding:28px 30px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat-number{font-size:30px;font-weight:850;color:var(--red);line-height:1.1}
.stat-label{font-size:14px;color:var(--muted);margin-top:8px}
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.product-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.3s;position:relative}
.product-card:hover{transform:translateY(-7px);box-shadow:var(--shadow);border-color:transparent}
.product-image{height:245px;overflow:hidden;background:#f1f3f6}
.product-image img{width:100%;height:100%;object-fit:cover;transition:.5s}
.product-card:hover .product-image img{transform:scale(1.045)}
.product-body{padding:24px}
.product-tag{font-size:12px;color:var(--red);font-weight:700;letter-spacing:1px}
.product-title{font-size:21px;margin:8px 0 8px;line-height:1.35}
.product-text{color:var(--muted);font-size:14px;margin:0 0 16px}
.solution-grid{display:grid;grid-template-columns:1.15fr .85fr .85fr;gap:18px;min-height:520px}
.solution-card{position:relative;overflow:hidden;border-radius:var(--radius);color:#fff;min-height:250px}
.solution-card:first-child{grid-row:span 2}
.solution-card img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;transition:.5s}
.solution-card:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(5,10,18,.9),rgba(5,10,18,.08) 65%)}
.solution-card:hover img{transform:scale(1.05)}
.solution-content{position:absolute;z-index:2;left:28px;right:28px;bottom:26px}
.solution-content h3{font-size:25px;margin:0 0 6px}
.solution-content p{margin:0 0 12px;color:#d9dfe8;font-size:14px}
.capability-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:55px;align-items:center}
.capability-image{position:relative}
.capability-image img{border-radius:var(--radius);width:100%;height:500px;object-fit:cover}
.capability-badge{position:absolute;right:-20px;bottom:35px;background:var(--red);color:#fff;padding:26px;border-radius:14px;width:210px;box-shadow:0 18px 40px rgba(229,31,36,.25)}
.capability-badge strong{font-size:32px;display:block}
.feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:30px}
.feature-item{display:flex;gap:14px}
.feature-icon{width:44px;height:44px;border-radius:10px;background:var(--soft-red);color:var(--red);display:grid;place-items:center;flex:none;font-weight:900}
.feature-item h4{margin:0 0 5px;font-size:17px}
.feature-item p{margin:0;color:var(--muted);font-size:14px}
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.case-card{background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);transition:.3s}
.case-card:hover{box-shadow:var(--shadow);transform:translateY(-5px)}
.case-card img{height:230px;width:100%;object-fit:cover}
.case-body{padding:24px}
.case-meta{font-size:12px;color:var(--red);font-weight:700}
.case-body h3{margin:7px 0 8px;font-size:21px}
.case-body p{margin:0;color:var(--muted);font-size:14px}
.about-strip{display:grid;grid-template-columns:1fr 1fr;min-height:540px}
.about-strip-image{background:url('../images/solar-farm.jpg') center/cover no-repeat}
.about-strip-content{background:#111a27;color:#fff;padding:70px max(50px,calc((100vw - 1200px)/2));padding-right:7vw;display:flex;align-items:center}
.about-strip-content .section-desc{color:#c6cfdb}
.about-values{display:flex;gap:28px;margin:30px 0}
.about-values strong{display:block;font-size:30px;color:#ff4549}
.about-values span{font-size:13px;color:#c6cfdb}
.cta{background:linear-gradient(115deg,#cf151b,#f02b31);color:#fff;border-radius:20px;padding:48px 55px;display:flex;align-items:center;justify-content:space-between;gap:30px;box-shadow:0 25px 60px rgba(229,31,36,.25)}
.cta h2{font-size:34px;margin:0 0 8px}
.cta p{margin:0;color:#ffe9e9}

/* Page hero */
.page-hero{height:390px;position:relative;color:#fff;display:flex;align-items:flex-end;background:#111827;overflow:hidden}
.page-hero:before{display:none}
.page-hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center}
.page-hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,11,18,.88),rgba(7,11,18,.3)),linear-gradient(0deg,rgba(7,11,18,.65),transparent)}
.page-hero .container{position:relative;z-index:1;padding-bottom:55px}
.page-hero h1{font-size:48px;margin:8px 0 8px;line-height:1.15}
.page-hero p{margin:0;color:#dce2ea;max-width:720px}
.breadcrumb{font-size:13px;color:#d5dce5}
.breadcrumb a{color:#fff}
.notice{background:#fff7e8;border:1px solid #f2d7a0;color:#835d12;padding:14px 18px;border-radius:10px;font-size:14px;margin-bottom:28px}
.category-tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:30px}
.category-tabs a{padding:10px 18px;border:1px solid var(--line);border-radius:999px;background:#fff;font-size:14px}
.category-tabs a:hover,.category-tabs a.active{background:var(--red);border-color:var(--red);color:#fff}

/* Product detail */
.product-hero{padding:70px 0;background:linear-gradient(135deg,#f7f8fa,#eceff4)}
.product-detail-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.product-main-image{border-radius:20px;overflow:hidden;box-shadow:var(--shadow);background:#fff}
.product-main-image img{width:100%;height:520px;object-fit:cover}
.product-label{color:var(--red);font-weight:800;letter-spacing:1.5px;font-size:13px}
.product-detail-grid h1{font-size:44px;line-height:1.2;margin:12px 0 16px}
.product-lead{font-size:17px;color:var(--muted)}
.product-highlights{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:25px 0}
.product-highlight{background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px}
.product-highlight strong{display:block;font-size:20px;color:var(--red)}
.product-highlight span{font-size:12px;color:var(--muted)}
.detail-nav{position:sticky;top:82px;z-index:20;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 8px 20px rgba(15,23,42,.04)}
.detail-nav .container{display:flex;gap:28px;overflow-x:auto}
.detail-nav a{padding:18px 0;white-space:nowrap;font-weight:650;font-size:14px}
.detail-nav a:hover{color:var(--red)}
.detail-section{padding:70px 0;border-bottom:1px solid var(--line)}
.detail-layout{display:grid;grid-template-columns:280px 1fr;gap:55px}
.detail-side h2{font-size:30px;margin:0}
.detail-side p{color:var(--muted);font-size:14px}
.detail-content h3{font-size:22px;margin:0 0 14px}
.detail-content p{color:var(--muted)}
.spec-table{width:100%;border-collapse:collapse;border:1px solid var(--line);background:#fff}
.spec-table th,.spec-table td{padding:14px 18px;border-bottom:1px solid var(--line);text-align:left;font-size:14px}
.spec-table th{width:32%;background:#f7f8fa;color:#4b5563;font-weight:650}
.spec-table tr:last-child th,.spec-table tr:last-child td{border-bottom:0}
.use-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
.use-item{padding:22px;border:1px solid var(--line);border-radius:12px;background:#fff}
.use-item strong{display:block;margin-bottom:5px}
.use-item span{font-size:13px;color:var(--muted)}
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;counter-reset:flow}
.flow-item{position:relative;padding:24px 18px;border-radius:12px;background:var(--soft);counter-increment:flow}
.flow-item:before{content:"0" counter(flow);font-size:12px;color:var(--red);font-weight:800}
.flow-item strong{display:block;margin:8px 0 5px}
.flow-item span{font-size:13px;color:var(--muted)}
.install-card{display:grid;grid-template-columns:1fr 1fr;gap:30px;background:#f7f8fa;border-radius:16px;padding:30px}
.install-card ul{margin:0;padding-left:20px;color:var(--muted)}
.structure-diagram{min-height:330px;background:linear-gradient(145deg,#182231,#27354a);border-radius:16px;color:#fff;padding:32px;display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.structure-node{border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06);border-radius:12px;padding:20px}
.structure-node b{display:block;color:#ff777b;margin-bottom:6px}

/* Solutions */
.solution-list{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.solution-list-card{display:grid;grid-template-columns:45% 55%;min-height:310px;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#fff;transition:.3s}
.solution-list-card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.solution-list-card img{width:100%;height:100%;object-fit:cover}
.solution-list-body{padding:32px}
.solution-list-body h3{font-size:25px;margin:8px 0}
.solution-list-body p{color:var(--muted);font-size:14px}
.solution-tags{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}
.solution-tags span{padding:5px 10px;border-radius:999px;background:var(--soft-red);color:var(--red);font-size:12px}
.architecture{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;align-items:center}
.arch-node{text-align:center;padding:22px 12px;background:#fff;border:1px solid var(--line);border-radius:12px;position:relative}
.arch-node:not(:last-child):after{content:"→";position:absolute;right:-17px;top:50%;transform:translateY(-50%);color:var(--red);font-weight:900;z-index:2}
.arch-node strong{display:block;font-size:15px}
.arch-node span{font-size:12px;color:var(--muted)}
.benefit-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.benefit{background:#fff;border:1px solid var(--line);padding:24px;border-radius:14px}
.benefit strong{display:block;font-size:18px;margin:8px 0}
.benefit p{font-size:13px;color:var(--muted);margin:0}

/* Service/About/Contact */
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.service-card{padding:32px;border:1px solid var(--line);border-radius:15px;background:#fff}
.service-card .num{font-size:13px;color:var(--red);font-weight:800}
.service-card h3{margin:10px 0 8px;font-size:22px}
.service-card p{margin:0;color:var(--muted);font-size:14px}
.process{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.process-item{text-align:center;padding:22px 12px;border-radius:12px;background:#fff;border:1px solid var(--line)}
.process-item b{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:var(--red);color:#fff;margin:0 auto 12px}
.process-item span{font-size:13px;color:var(--muted)}
.company-profile{display:grid;grid-template-columns:1fr 1fr;gap:55px;align-items:center}
.company-profile img{width:100%;height:480px;object-fit:cover;border-radius:18px}
.legal-table{border-top:2px solid var(--ink);margin-top:25px}
.legal-row{display:grid;grid-template-columns:160px 1fr;border-bottom:1px solid var(--line);padding:14px 0;font-size:14px}
.legal-row span:first-child{color:var(--muted)}
.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:40px}
.contact-panel{padding:38px;background:#111a27;color:#fff;border-radius:18px}
.contact-panel h2{font-size:30px;margin-top:0}
.contact-item{padding:18px 0;border-bottom:1px solid rgba(255,255,255,.12)}
.contact-item small{display:block;color:#aeb8c5}
.contact-item strong{display:block;margin-top:4px;font-size:16px}
.form{padding:38px;border:1px solid var(--line);border-radius:18px;background:#fff}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13px;font-weight:700;margin-bottom:7px}
.form-group input,.form-group select,.form-group textarea{width:100%;border:1px solid #dfe3e8;border-radius:8px;padding:12px 14px;outline:none;background:#fff}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--red);box-shadow:0 0 0 3px rgba(229,31,36,.08)}
.form-group textarea{min-height:130px;resize:vertical}
.map-placeholder{height:350px;border-radius:16px;background:linear-gradient(145deg,#e7ebf0,#f8f9fb);display:grid;place-items:center;text-align:center;color:var(--muted);border:1px solid var(--line)}

/* Footer */
.footer{background:#0d141f;color:#c5ced9;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:45px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;margin-bottom:16px}
.footer-brand img{width:85px;height:60px;object-fit:contain;filter:brightness(0) invert(1);opacity:.95;margin-right:13px}
.footer h4{color:#fff;margin:0 0 17px;font-size:16px}
.footer p{font-size:13px;color:#9ba7b7;max-width:360px}
.footer-links a{display:block;color:#aeb8c5;font-size:13px;margin:9px 0}
.footer-links a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:18px 0;font-size:12px;color:#8894a3;display:flex;justify-content:space-between;gap:20px}

@media(max-width:1120px){
  .brand{min-width:auto}.brand-cn{font-size:16px}.brand-en{display:none}.brand-logo{width:64px}
  .nav-link{padding-left:10px;padding-right:10px;font-size:14px}.nav-cta{display:none}
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .solution-grid{grid-template-columns:1fr 1fr}.solution-card:first-child{grid-column:span 2;grid-row:auto;min-height:360px}
  .benefit-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:860px){
  .topbar{display:none}.navbar{min-height:70px}.brand-cn{font-size:15px}.brand-logo{width:58px;height:48px}
  .menu-btn{display:block}.nav{display:none;position:absolute;left:0;right:0;top:70px;background:#fff;border-top:1px solid var(--line);box-shadow:var(--shadow);padding:12px 20px;max-height:calc(100vh - 70px);overflow:auto;align-items:stretch}
  .nav.open{display:block}.nav-link{padding:14px 5px;border-bottom:1px solid var(--line)}.nav-link:after{display:none}
  .dropdown{position:static;width:auto;transform:none;opacity:1;visibility:visible;box-shadow:none;border:0;padding:6px 0 12px;grid-template-columns:1fr;display:none}
  .nav-item.open .dropdown{display:grid}.nav-item:hover .dropdown{transform:none}
  .hero{min-height:620px}.hero-panel{display:none}.stats{margin-top:0}.stats-grid{grid-template-columns:repeat(2,1fr);border-radius:0}.stat:nth-child(2){border-right:0}.stat:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .section{padding:68px 0}.section-head{display:block}.section-head .section-desc{margin-top:12px}
  .capability-grid,.product-detail-grid,.company-profile,.contact-grid{grid-template-columns:1fr}.capability-badge{right:15px}.product-main-image img{height:auto}
  .case-grid,.service-grid{grid-template-columns:repeat(2,1fr)}
  .about-strip{grid-template-columns:1fr}.about-strip-image{min-height:360px}.about-strip-content{padding:55px 30px}
  .cta{padding:36px;display:block}.cta .btn{margin-top:22px}
  .detail-layout{grid-template-columns:1fr;gap:25px}.use-grid{grid-template-columns:repeat(2,1fr)}.flow{grid-template-columns:repeat(2,1fr)}
  .solution-list{grid-template-columns:1fr}.architecture{grid-template-columns:1fr}.arch-node:not(:last-child):after{content:"↓";right:auto;left:50%;top:auto;bottom:-22px;transform:translateX(-50%)}
  .process{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr}.footer-grid>div:last-child{grid-column:1/-1}
}
@media(max-width:620px){
  :root{--container:min(100% - 28px,1200px)}
  .hero{min-height:590px}.hero .container{padding:70px 0}.hero h1{font-size:42px}.hero p{font-size:16px}
  .section{padding:55px 0}.section-title{font-size:30px}
  .stats-grid{grid-template-columns:1fr 1fr}.stat{padding:20px 16px}.stat-number{font-size:25px}
  .product-grid,.case-grid,.service-grid{grid-template-columns:1fr}
  .solution-grid{grid-template-columns:1fr}.solution-card:first-child{grid-column:auto;min-height:300px}.solution-card{min-height:260px}
  .feature-list{grid-template-columns:1fr}.capability-image img{height:360px}.capability-badge{width:170px;padding:18px}
  .about-values{flex-wrap:wrap}.page-hero{height:330px}.page-hero h1{font-size:37px}
  .product-detail-grid h1{font-size:34px}.product-highlights{grid-template-columns:1fr 1fr}.detail-nav{top:70px}
  .use-grid,.flow,.install-card{grid-template-columns:1fr}.structure-diagram{grid-template-columns:1fr}
  .solution-list-card{grid-template-columns:1fr}.solution-list-card img{height:230px}.benefit-grid{grid-template-columns:1fr}
  .process{grid-template-columns:repeat(2,1fr)}.form-row{grid-template-columns:1fr}.legal-row{grid-template-columns:1fr;gap:4px}
  .footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child,.footer-grid>div:last-child{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin:3px 0}
}

/* Homepage visual redesign: dark navigation + centered technology carousel */
.home-page .site-header{
  position:sticky;
  top:0;
  z-index:1000;
  background:rgba(39,47,60,.98);
  border-bottom:1px solid rgba(255,255,255,.06);
  backdrop-filter:blur(12px);
}
.home-page .navbar{min-height:72px}
.home-page .brand{min-width:365px}
.home-page .brand-logo{width:64px;height:48px;margin-right:11px}
.home-page .brand-cn{color:#fff;font-size:17px;font-weight:700}
.home-page .brand-en{color:#aeb8c8;font-size:8px}
.home-page .nav-link{color:#f4f6f9;padding:22px 14px;font-size:15px;font-weight:500}
.home-page .nav-link:after{bottom:0;background:#fff;height:3px}
.home-page .nav-link:hover,.home-page .nav-link.active{color:#fff}
.home-page .nav-cta{background:transparent;border-color:rgba(255,255,255,.45);box-shadow:none;color:#fff}
.home-page .nav-cta:hover{background:var(--red);border-color:var(--red)}

.home-page .hero{
  height:min(790px,calc(100vh - 72px));
  min-height:660px;
  position:relative;
  overflow:hidden;
  display:block;
  color:#fff;
  background:#071323;
}
.home-page .hero:before,.home-page .hero:after{display:none}
.hero-slides,.hero-slide{position:absolute;inset:0}
.hero-slide{
  opacity:0;
  visibility:hidden;
  transition:opacity .8s ease,visibility .8s ease;
  z-index:0;
}
.hero-slide.is-active{opacity:1;visibility:visible;z-index:1}
.hero-slide:before{display:none}
.hero-bg-image{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;transform:scale(1.035);transition:transform 7s ease}
.hero-slide.is-active .hero-bg-image{transform:scale(1)}
.hero-slide:after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(180deg,rgba(3,11,25,.40) 0%,rgba(5,18,39,.48) 52%,rgba(4,14,31,.60) 100%),
    linear-gradient(90deg,rgba(5,16,35,.24),rgba(18,54,100,.15),rgba(5,16,35,.28));
}
.hero-tech-grid{
  position:absolute;
  inset:0;
  z-index:2;
  pointer-events:none;
  opacity:.26;
  background:
    radial-gradient(circle at 50% 74%,rgba(66,137,255,.34),transparent 31%),
    linear-gradient(rgba(103,161,255,.10) 1px,transparent 1px),
    linear-gradient(90deg,rgba(103,161,255,.10) 1px,transparent 1px);
  background-size:auto,48px 48px,48px 48px;
  mask-image:linear-gradient(to bottom,transparent 8%,#000 42%,#000 100%);
}
.hero-copy{
  position:relative;
  z-index:3;
  height:100%;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding:42px 0 96px;
}
.hero-copy-inner{max-width:980px;margin:auto}
.home-page .hero-kicker{
  justify-content:center;
  gap:10px;
  font-size:13px;
  letter-spacing:3.2px;
  color:#d6e3fa;
  text-shadow:0 2px 18px rgba(0,0,0,.35);
}
.home-page .hero-kicker:before,.home-page .hero-kicker:after{
  content:"";
  width:38px;
  height:1px;
  background:rgba(255,255,255,.55);
}
.home-page .hero h1{
  max-width:none;
  margin:20px 0 22px;
  font-size:clamp(48px,5.2vw,76px);
  line-height:1.13;
  letter-spacing:-2px;
  font-weight:850;
  text-shadow:0 8px 28px rgba(0,0,0,.30);
}
.home-page .hero h1 em{color:#fff;font-style:normal}
.home-page .hero p{
  max-width:840px;
  margin:0 auto 34px;
  color:#e5ebf4;
  font-size:20px;
  line-height:1.8;
  text-shadow:0 4px 18px rgba(0,0,0,.25);
}
.home-page .hero-actions{justify-content:center;gap:16px}
.home-page .hero-actions .btn{min-width:138px;height:54px;border-radius:5px}
.home-page .hero-actions .btn-primary{
  background:rgba(229,31,36,.92);
  box-shadow:0 12px 28px rgba(229,31,36,.28);
}
.home-page .hero-actions .btn-outline{
  background:rgba(15,35,66,.36);
  border-color:rgba(255,255,255,.72);
  backdrop-filter:blur(8px);
}
.hero-arrow{
  position:absolute;
  z-index:5;
  top:50%;
  transform:translateY(-50%);
  width:50px;
  height:70px;
  border:0;
  border-radius:5px;
  color:#fff;
  background:rgba(4,12,26,.28);
  font-size:48px;
  font-weight:200;
  line-height:1;
  cursor:pointer;
  transition:.25s;
}
.hero-arrow:hover{background:rgba(4,12,26,.58)}
.hero-prev{left:24px}
.hero-next{right:24px}
.hero-dots{
  position:absolute;
  z-index:5;
  left:50%;
  bottom:30px;
  transform:translateX(-50%);
  display:flex;
  gap:10px;
}
.hero-dots button{
  width:28px;
  height:3px;
  padding:0;
  border:0;
  background:rgba(255,255,255,.35);
  cursor:pointer;
  transition:.25s;
}
.hero-dots button.is-active{width:48px;background:#fff}
.floating-consult{
  position:fixed;
  right:0;
  top:48%;
  z-index:900;
  width:68px;
  padding:15px 6px 13px;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:2px;
  background:linear-gradient(180deg,#f13a3f,#d8181e);
  color:#fff;
  border-radius:8px 0 0 8px;
  box-shadow:0 12px 28px rgba(0,0,0,.18);
  writing-mode:vertical-rl;
  letter-spacing:2px;
}
.floating-consult small{font-size:8px;opacity:.72;letter-spacing:1px}
.home-page .section:first-of-type{padding-top:96px}

@media(max-width:1120px){
  .home-page .brand{min-width:auto}
  .home-page .brand-cn{font-size:15px}
  .home-page .nav-link{padding-left:10px;padding-right:10px;font-size:14px}
}
@media(max-width:860px){
  .home-page .site-header{background:#27303d}
  .home-page .navbar{min-height:70px}
  .home-page .nav{background:#fff;top:70px}
  .home-page .nav-link{color:var(--ink)}
  .home-page .nav-link:hover,.home-page .nav-link.active{color:var(--red)}
  .home-page .nav-cta{display:none}
  .home-page .hero{height:680px;min-height:620px}
  .hero-copy{padding:35px 48px 78px}
  .home-page .hero h1{font-size:clamp(42px,8vw,58px)}
  .home-page .hero p{font-size:17px}
  .hero-arrow{width:42px;height:58px;font-size:38px}
  .hero-prev{left:8px}.hero-next{right:8px}
  .floating-consult{display:none}
}
@media(max-width:620px){
  .home-page .brand-logo{width:52px;height:42px}
  .home-page .brand-cn{font-size:14px}
  .home-page .hero{height:620px;min-height:590px}
  .hero-copy{padding:34px 16px 72px}
  .home-page .hero-kicker{font-size:10px;letter-spacing:1.8px}
  .home-page .hero-kicker:before,.home-page .hero-kicker:after{width:20px}
  .home-page .hero h1{font-size:38px;letter-spacing:-1px;margin-top:16px}
  .home-page .hero p{font-size:15px;line-height:1.75}
  .home-page .hero-actions .btn{min-width:122px;height:48px;padding:0 18px}
  .hero-arrow{display:none}
  .hero-dots{bottom:22px}
}