* { box-sizing: border-box; margin: 0; padding: 0; }
    :root{
      --blue:#0b5cff;
      --blue2:#00a4ff;
      --green:#21c66b;
      --dark:#08213f;
      --text:#17324d;
      --muted:#6d7f91;
      --line:rgba(20,72,122,.13);
      --bg:#f4f9ff;
      --glass:rgba(255,255,255,.12);
      --card:#ffffff;
    }
    html{scroll-behavior:smooth;}
    body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:#fff;line-height:1.6;}
    a{text-decoration:none;color:inherit;}
    [class*="img"],[class*="photo"],.pic{background-repeat:no-repeat;background-size:cover;}
    .topbar{height:38px;background:linear-gradient(90deg,#052b52,#0b5cff);color:rgba(255,255,255,.88);font-size:13px;display:flex;align-items:center;justify-content:center;}
    .topbar .inner{width:min(1440px,92vw);display:flex;justify-content:space-between;align-items:center;}
    .nav{position:sticky;top:0;z-index:20;height:76px;background:rgba(255,255,255,.86);backdrop-filter:blur(18px);border-bottom:1px solid rgba(10,54,98,.08);}
    .nav .inner{width:min(1440px,92vw);height:100%;margin:auto;display:flex;align-items:center;justify-content:space-between;}
    .logo{display:flex;align-items:center;gap:12px;font-weight:800;color:#08213f;letter-spacing:.5px;}
    .logo-mark{width:42px;height:42px;border-radius:12px;background:conic-gradient(from 210deg,#0b5cff,#00c2ff,#21c66b,#ffcf33,#0b5cff);position:relative;box-shadow:0 12px 30px rgba(11,92,255,.22);}
    .logo-mark:after{content:"";position:absolute;inset:10px;background:#fff;border-radius:7px;}
    .logo span{font-size:22px;}
    .menu{display:flex;gap:34px;font-size:15px;color:#263f59;align-items:center;}
    .menu a{position:relative;white-space:nowrap;}
    .menu a:after{content:"";position:absolute;left:0;bottom:-10px;width:0;height:2px;background:var(--blue);transition:.25s;}
    .menu a:hover:after{width:100%;}
    .nav-actions{display:flex;align-items:center;gap:12px;}
    .lang{font-size:14px;color:#55708a;}
    .btn{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:12px 22px;font-weight:700;font-size:14px;transition:.25s;border:1px solid transparent;}
    .btn-primary{background:linear-gradient(90deg,var(--blue),var(--blue2));color:#fff;box-shadow:0 16px 34px rgba(11,92,255,.24);}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 42px rgba(11,92,255,.32);}
    .btn-ghost{border-color:rgba(255,255,255,.6);color:#fff;background:rgba(255,255,255,.08);}
    .btn-light{border-color:rgba(11,92,255,.18);color:var(--blue);background:#fff;}
    .hero{position:relative;min-height:760px;overflow:hidden;background:linear-gradient(115deg,#eaf7ff 0%,#f7fcff 45%,#e8fff2 100%);}
    .hero:before{content:"";position:absolute;inset:0;background:url('https://images.unsplash.com/photo-1509391366360-2e959784a276?auto=format&fit=crop&w=2400&q=88') center right/cover no-repeat;opacity:.42;}
    .hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(5,31,61,.92) 0%,rgba(5,55,98,.72) 42%,rgba(255,255,255,.12) 100%);}
    .hero .inner{position:relative;z-index:2;width:min(1440px,92vw);margin:auto;min-height:760px;display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:80px;}
    .eyebrow{display:inline-flex;align-items:center;gap:10px;padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.25);color:#d9f3ff;font-size:14px;margin-bottom:26px;}
    .eyebrow i{width:8px;height:8px;border-radius:50%;background:#22e383;box-shadow:0 0 0 6px rgba(34,227,131,.16);}
    h1{font-size:64px;line-height:1.08;color:#fff;letter-spacing:-2.2px;font-weight:850;margin-bottom:24px;}
    .hero p{font-size:18px;color:rgba(255,255,255,.84);max-width:620px;margin-bottom:30px;}
    .hero-actions{display:flex;gap:16px;align-items:center;margin-bottom:34px;}
    .hero-stats{display:flex;align-items:center;gap:0;max-width:680px;padding:16px 0;border-top:1px solid rgba(255,255,255,.20);border-bottom:1px solid rgba(255,255,255,.16);background:linear-gradient(90deg,rgba(255,255,255,.07),rgba(255,255,255,0));}
    .stat{flex:1;padding:2px 26px 2px 0;margin-right:26px;border-right:1px solid rgba(255,255,255,.18);background:transparent;border-radius:0;}.stat:last-child{border-right:0;margin-right:0;}
    .stat strong{display:block;font-size:30px;line-height:1;color:#fff;margin-bottom:8px;letter-spacing:-.5px;}
    .stat span{font-size:13px;color:rgba(255,255,255,.70);}
    .hero-panel{justify-self:end;width:470px;padding:24px;border-radius:30px;background:rgba(255,255,255,.88);box-shadow:0 30px 80px rgba(5,38,82,.20);border:1px solid rgba(255,255,255,.68);backdrop-filter:blur(18px);}
    .panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;}
    .panel-head h3{font-size:19px;color:#0c315b;}
    .pill{padding:6px 12px;border-radius:999px;background:#e9f8ef;color:#17a65b;font-weight:800;font-size:12px;}
    .energy-card{border-radius:24px;overflow:hidden;background:#f7fbff;border:1px solid var(--line);margin-bottom:18px;}
    .energy-card .pic{height:218px;background:url('https://images.unsplash.com/photo-1509391366360-2e959784a276?auto=format&fit=crop&w=1200&q=88') center/cover no-repeat;position:relative;}
    .energy-card .pic:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent,rgba(6,32,60,.65));}
    .energy-card .caption{padding:18px;}
    .caption b{font-size:18px;color:#0b315b;display:block;margin-bottom:6px;}
    .caption span{font-size:14px;color:var(--muted);}
    .mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
    .mini{padding:15px;border-radius:18px;background:#fff;border:1px solid var(--line);}
    .mini em{font-style:normal;font-size:12px;color:#7b8ea0;display:block;}
    .mini strong{font-size:22px;color:#0b5cff;}
    section{padding:100px 0;position:relative;}
    .wrap{width:min(1440px,92vw);margin:auto;}
    .section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;margin-bottom:46px;}
    .section-head .kicker{font-size:14px;font-weight:800;color:var(--blue);letter-spacing:.12em;text-transform:uppercase;margin-bottom:12px;}
    h2{font-size:42px;line-height:1.2;color:#0a2747;letter-spacing:-1px;}
    .section-head p{max-width:520px;color:var(--muted);font-size:16px;}
    .solutions{background:linear-gradient(180deg,#fff,#f2f8ff);}
    .solution-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
    .solution{min-height:288px;border-radius:28px;background:#fff;overflow:hidden;border:1px solid var(--line);box-shadow:0 24px 60px rgba(9,57,103,.08);position:relative;transition:.3s;}
    .solution:hover{transform:translateY(-8px);box-shadow:0 32px 80px rgba(9,57,103,.14);}
    .solution .img{height:142px;background-size:cover;background-position:center;position:relative;}.solution .img:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,0),rgba(6,44,82,.22));}
    .solution:nth-child(1) .img{background-image:url('https://images.unsplash.com/photo-1497435334941-8c899ee9e8e9?auto=format&fit=crop&w=900&q=88');}
    .solution:nth-child(2) .img{background-image:url('https://images.unsplash.com/photo-1466611653911-95081537e5b7?auto=format&fit=crop&w=900&q=88');}
    .solution:nth-child(3) .img{background-image:url('https://images.unsplash.com/photo-1559302504-64aae6ca6b6d?auto=format&fit=crop&w=900&q=88');}
    .solution:nth-child(4) .img{background-image:url('https://images.unsplash.com/photo-1473341304170-971dccb5ac1e?auto=format&fit=crop&w=900&q=88');}
    .solution .body{padding:22px;}
    .solution h3{font-size:22px;color:#0a2747;margin-bottom:10px;}
    .solution p{font-size:14px;color:var(--muted);margin-bottom:18px;line-height:1.55;}
    .tags{display:flex;gap:8px;flex-wrap:wrap;}
    .tags span{font-size:12px;padding:6px 10px;border-radius:999px;background:#eef6ff;color:#2465ad;}
    .products{background:#f6fbff;overflow:hidden;}
    .product-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:28px;align-items:stretch;}
    .product-main{border-radius:34px;background:linear-gradient(135deg,#07345d 0%,#0b5cff 56%,#12b8d8 100%);padding:42px;color:#fff;min-height:560px;position:relative;overflow:hidden;}
    .product-main:before{content:"";position:absolute;width:520px;height:520px;right:-150px;bottom:-190px;border-radius:50%;background:radial-gradient(circle,rgba(33,198,107,.46),transparent 62%);}
    .product-main:after{content:"";position:absolute;left:42px;right:42px;bottom:42px;height:260px;background:linear-gradient(135deg,rgba(255,255,255,.10),rgba(255,255,255,.02)),url('https://images.unsplash.com/photo-1497435334941-8c899ee9e8e9?auto=format&fit=crop&w=1200&q=88') center/cover no-repeat;border-radius:30px;box-shadow:0 28px 62px rgba(0,0,0,.18);}
    .product-main h3{font-size:34px;line-height:1.16;margin-bottom:14px;position:relative;z-index:2;max-width:520px;}
    .product-main p{color:rgba(255,255,255,.78);font-size:16px;max-width:400px;position:relative;z-index:2;}
    .product-list{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
    .product{padding:26px;border-radius:28px;background:#fff;border:1px solid var(--line);box-shadow:0 20px 56px rgba(9,57,103,.07);}
    .icon{width:46px;height:46px;border-radius:15px;background:linear-gradient(135deg,#eaf3ff,#eafff2);display:flex;align-items:center;justify-content:center;margin-bottom:18px;color:var(--blue);font-weight:900;}
    .product h4{font-size:21px;color:#0a2747;margin-bottom:10px;}
    .product p{font-size:14px;color:var(--muted);}
    .tech{background:#fff;}
    .tech-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
    .tech-card{padding:30px;border-radius:30px;background:linear-gradient(180deg,#ffffff,#f7fbff);border:1px solid var(--line);position:relative;overflow:hidden;min-height:214px;}
    .tech-card:before{content:"";position:absolute;right:-60px;top:-60px;width:150px;height:150px;border-radius:50%;background:rgba(11,92,255,.08);}
    .tech-card .num{font-size:13px;color:var(--blue);font-weight:900;margin-bottom:22px;}
    .tech-card h3{font-size:24px;color:#0a2747;margin-bottom:12px;}
    .tech-card p{color:var(--muted);font-size:15px;}
    .case{background:linear-gradient(135deg,#072648,#0b5cff);color:#fff;overflow:hidden;}
    .case:before{content:"";position:absolute;inset:0;background:url('https://images.unsplash.com/photo-1497435334941-8c899ee9e8e9?auto=format&fit=crop&w=2000&q=84') center/cover no-repeat;opacity:.16;}
    .case .wrap{position:relative;z-index:2;}
    .case h2,.case .kicker{color:#fff;}
    .case .section-head p{color:rgba(255,255,255,.72);}
    .case-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:22px;}
    .case-card{min-height:330px;border-radius:30px;overflow:hidden;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);backdrop-filter:blur(14px);position:relative;}
    .case-card.big{grid-row:span 2;min-height:460px;}
    .case-card .photo{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.72;transition:.3s;}
    .case-card:hover .photo{transform:scale(1.05);}
    .case-card:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.05),rgba(3,19,39,.78));}
    .case-card .txt{position:absolute;left:28px;right:28px;bottom:28px;z-index:2;}
    .case-card h3{font-size:24px;margin-bottom:8px;}
    .case-card p{font-size:14px;color:rgba(255,255,255,.76);}
    .news{background:#fff;}
    .news-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:22px;}
    .news-card{border-radius:26px;border:1px solid var(--line);padding:28px;background:#fff;transition:.25s;}
    .news-card:hover{transform:translateY(-6px);box-shadow:0 26px 60px rgba(9,57,103,.12);}
    .date{color:var(--blue);font-size:13px;font-weight:800;margin-bottom:18px;}
    .news-card h3{font-size:21px;line-height:1.38;color:#0a2747;margin-bottom:16px;}
    .news-card p{color:var(--muted);font-size:14px;}
    .about{background:linear-gradient(180deg,#f4f9ff,#fff);padding-bottom:0;}
    .about-box{border-radius:36px;background:#fff;border:1px solid var(--line);box-shadow:0 30px 90px rgba(9,57,103,.09);display:grid;grid-template-columns:.95fr 1.05fr;overflow:hidden;}
    .about-img{min-height:410px;background:url('https://images.unsplash.com/photo-1559302504-64aae6ca6b6d?auto=format&fit=crop&w=1300&q=88') center/cover no-repeat;}
    .about-content{padding:54px;}
    .about-content h2{margin-bottom:18px;}
    .about-content p{color:var(--muted);margin-bottom:28px;}
    .about-data{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-bottom:28px;}
    .about-data div{border-radius:20px;background:#f4f9ff;padding:20px;}
    .about-data strong{font-size:30px;color:#0b5cff;display:block;line-height:1.1;}
    .about-data span{font-size:13px;color:#6d7f91;}
    footer{background:#071d34;color:#fff;padding:64px 0 34px;margin-top:100px;}
    .footer-grid{display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:36px;margin-bottom:52px;}
    footer h4{font-size:16px;margin-bottom:16px;color:#fff;}
    footer p,footer a{display:block;color:rgba(255,255,255,.62);font-size:14px;margin-bottom:10px;}
    .copyright{padding-top:26px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;color:rgba(255,255,255,.5);font-size:13px;}
    @media(max-width:1100px){
      .menu{display:none}.hero .inner{grid-template-columns:1fr}.hero-panel{justify-self:start;width:100%;max-width:520px}.solution-grid,.tech-grid,.news-grid{grid-template-columns:1fr 1fr}.product-layout,.about-box{grid-template-columns:1fr}.case-grid{grid-template-columns:1fr}.case-card.big{grid-row:auto}.footer-grid{grid-template-columns:1fr 1fr}.product-main:after{opacity:.75;left:32px;right:32px;bottom:32px;height:220px}
      h1{font-size:48px}h2{font-size:34px}.hero{min-height:auto}.hero .inner{padding:90px 0;min-height:auto}
    }
    @media(max-width:640px){.product-main{min-height:500px;padding:32px}.product-main:after{left:28px;right:28px;bottom:28px;height:210px}.topbar{display:none}.nav-actions{display:none}.solution-grid,.tech-grid,.news-grid,.product-list,.about-data,.footer-grid{grid-template-columns:1fr}.hero-stats{display:grid;grid-template-columns:1fr}.stat{border-right:0;border-bottom:1px solid rgba(255,255,255,.16);padding:14px 0;margin:0}.stat:last-child{border-bottom:0}.section-head{display:block}h1{font-size:38px}.hero p{font-size:16px}.hero-actions{flex-direction:column;align-items:flex-start}.about-content{padding:32px}section{padding:72px 0}.copyright{display:block}.copyright span{display:block;margin-bottom:8px}}
  
/* full site pages */
.page-hero{min-height:520px;}
.page-hero .inner{min-height:520px;grid-template-columns:1fr;align-items:end;padding-bottom:82px;}
.page-hero:before{background:var(--page-img) center/cover no-repeat;opacity:.46;}
.page-hero h1{font-size:56px;max-width:850px;}
.breadcrumb{color:rgba(255,255,255,.78);font-size:14px;margin-bottom:18px;}
.sub-nav{position:sticky;top:76px;z-index:12;background:rgba(255,255,255,.9);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);}
.sub-nav .wrap{display:flex;gap:28px;overflow:auto;white-space:nowrap;padding:15px 0;color:#31506d;font-weight:700;font-size:14px;}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.feature-card{padding:30px;border-radius:24px;background:#fff;border:1px solid var(--line);box-shadow:0 16px 45px rgba(15,80,130,.06);}
.feature-card b{display:inline-flex;margin-bottom:18px;width:38px;height:38px;border-radius:12px;background:#eef7ff;color:var(--blue);align-items:center;justify-content:center;}
.feature-card h3{font-size:22px;color:var(--dark);margin-bottom:10px;}
.feature-card p{color:var(--muted);}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.image-block{min-height:430px;border-radius:32px;background:var(--img) center/cover no-repeat;box-shadow:0 24px 70px rgba(7,48,90,.14);position:relative;overflow:hidden;}
.image-block:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,0),rgba(6,37,72,.18));}
.timeline{display:grid;gap:18px;}
.timeline-item{display:grid;grid-template-columns:110px 1fr;gap:24px;padding:22px;border-radius:22px;background:#fff;border:1px solid var(--line);}
.timeline-item strong{color:var(--blue);font-size:22px;}
.table-like{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.table-like div{background:#fff;border:1px solid var(--line);border-radius:22px;padding:24px;}
.table-like strong{display:block;color:var(--dark);font-size:20px;margin-bottom:8px;}
.table-like span{color:var(--muted);font-size:14px;}
.download-row{display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center;padding:24px;border-radius:22px;background:#fff;border:1px solid var(--line);margin-bottom:14px;}
.download-row h3{font-size:20px;color:var(--dark);}
.download-row p{color:var(--muted);font-size:14px;}
.contact-panel{display:grid;grid-template-columns:1fr 1fr;gap:26px;}
.form{background:#fff;border:1px solid var(--line);border-radius:30px;padding:34px;box-shadow:0 18px 56px rgba(15,80,130,.07)}
.form input,.form textarea{width:100%;border:1px solid rgba(20,72,122,.15);border-radius:14px;padding:15px 16px;margin-bottom:14px;font:inherit;color:var(--text);background:#f9fcff;}
.form textarea{min-height:140px;resize:vertical;}
.nav .menu a.active:after{width:100%;}
@media(max-width:900px){.feature-grid,.two-col,.table-like,.contact-panel{grid-template-columns:1fr}.page-hero h1{font-size:42px}.timeline-item{grid-template-columns:1fr}}