/* AISI site — V2.1 polished B2B factory theme */
:root{
  --navy:#0e2340; --navy2:#173a63; --steel:#2d6db0; --accent:#f4582e; --accent2:#ff8a5c;
  --bg:#f5f7fb; --card:#ffffff; --ink:#1a2634; --mut:#5a6b7e; --line:#e5eaf1;
  --ok:#1e8e5a; --warn:#b7791f;
  --sh-sm:0 1px 3px rgba(14,35,64,.06),0 1px 2px rgba(14,35,64,.04);
  --sh-md:0 10px 28px -8px rgba(14,35,64,.14);
  --sh-lg:0 24px 60px -18px rgba(14,35,64,.22);
  --r:16px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.62;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--steel);text-decoration:none}
a:hover{color:var(--accent)}
.wrap{max-width:1200px;margin:0 auto;padding:0 22px}

/* header */
.sitehead{background:linear-gradient(135deg,#0b1d36 0%,var(--navy2) 58%,#1d4a7c 100%);color:#fff;position:sticky;top:0;z-index:60;box-shadow:0 4px 18px rgba(10,20,36,.18)}
.sitehead .wrap{display:flex;align-items:center;gap:24px;min-height:68px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.4px;min-width:0}
.brand .logo{height:32px;width:auto;max-width:170px;object-fit:contain;display:block;filter:drop-shadow(0 1px 2px rgba(0,0,0,.25))}
.brand .tag{display:block;font-weight:500;font-size:10.5px;opacity:.78;letter-spacing:.25px;line-height:1.3;max-width:200px}
nav.menu{display:flex;gap:2px;margin-left:auto;flex-wrap:wrap}
nav.menu a{color:#dbe6f2;padding:8px 13px;border-radius:10px;font-size:14px;font-weight:600;transition:.15s}
nav.menu a:hover{background:rgba(255,255,255,.13);color:#fff}
.lang a{color:#ffd9cf}
/* hero */
.hero{position:relative;overflow:hidden;color:#fff;background:
  radial-gradient(900px 420px at 88% -10%,rgba(255,138,92,.20),transparent 60%),
  radial-gradient(700px 380px at -10% 110%,rgba(45,109,176,.28),transparent 60%),
  linear-gradient(120deg,#0b1d36 0%,var(--navy2) 55%,#23518a 100%)}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:44px 44px;mask-image:radial-gradient(80% 90% at 70% 20%,#000 0%,transparent 75%)}
.hero .wrap{position:relative}
.heroin{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(320px,.85fr);gap:44px;align-items:center;padding:74px 22px 96px}
.htext h1{font-size:clamp(27px,4.2vw,46px);line-height:1.22;font-weight:800;letter-spacing:.1px;text-wrap:balance}
.htext .sub{color:#c8d9ec;max-width:640px;margin-top:16px;font-size:16.5px}
.hero .pills{display:flex;gap:9px;flex-wrap:wrap;margin-top:24px}
.pill{background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);padding:6px 13px;border-radius:999px;font-size:12.5px;backdrop-filter:blur(4px)}
.cta-row{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 26px;border-radius:12px;font-weight:700;cursor:pointer;border:none;font-size:15px;transition:.18s;line-height:1.2}
.btn.primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;box-shadow:0 8px 22px -6px rgba(244,88,46,.55)}
.btn.primary:hover{transform:translateY(-2px);box-shadow:0 14px 30px -8px rgba(244,88,46,.6);color:#fff}
.btn.ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.4)}
.btn.ghost:hover{background:rgba(255,255,255,.1);color:#fff;transform:translateY(-2px)}
.btn.block{width:100%;text-align:center}
.hstage{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:14px;perspective:900px}
.htile{background:rgba(255,255,255,.97);border-radius:20px;box-shadow:var(--sh-lg);padding:10px;transform:rotate(-1.6deg);animation:float 7s ease-in-out infinite}
.htile:nth-child(2){transform:rotate(2deg) translateY(16px);animation-delay:-2.4s}
.htile:nth-child(3){transform:rotate(1.4deg) translateY(-12px);animation-delay:-4.2s}
.htile:nth-child(4){transform:rotate(-2.4deg) translateY(6px);animation-delay:-1.2s}
.htile img{width:100%;height:150px;object-fit:contain;border-radius:12px}
@keyframes float{0%,100%{translate:0 0}50%{translate:0 -7px}}
.hchip{position:absolute;left:50%;bottom:-26px;transform:translateX(-50%);background:rgba(255,255,255,.96);color:var(--navy);font-size:12.5px;font-weight:800;letter-spacing:.3px;padding:9px 18px;border-radius:999px;box-shadow:var(--sh-md);white-space:nowrap}
/* stats band */
.stats{position:relative;z-index:3;margin-top:-42px}
.stats .wrap{max-width:1200px}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px 22px;box-shadow:var(--sh-md);text-align:center}
.stat b{display:block;font-size:30px;font-weight:800;color:var(--navy);line-height:1.15;font-variant-numeric:tabular-nums}
.stat span{font-size:12.5px;color:var(--mut);font-weight:600;letter-spacing:.2px}
/* sections */
.sec{padding:64px 0}
.sec-white{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec h2{font-size:clamp(22px,3vw,31px);font-weight:800;margin-bottom:10px;color:var(--navy);letter-spacing:.2px}
.sec h2::after{content:"";display:block;width:54px;height:4px;margin-top:9px;border-radius:4px;background:linear-gradient(90deg,var(--accent),var(--accent2))}
.sec h2.tc::after{margin-left:auto;margin-right:auto}
.sec h2.tc{text-align:center}
.sec .lead{color:var(--mut);margin-bottom:30px;max-width:820px}
/* product / generic cards */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--sh-sm);transition:transform .18s,box-shadow .18s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:#cdd9e6}
.card .cv{position:relative;background:linear-gradient(180deg,#fafcff,#eef3fa);padding:14px;display:flex;align-items:center;justify-content:center}
.card .cv img{width:100%;height:190px;object-fit:contain;transition:transform .25s}
.card:hover .cv img{transform:scale(1.05)}
.card .cv .mcode{position:absolute;left:10px;top:10px;background:rgba(14,35,64,.82);color:#fff;font-size:11px;font-weight:700;letter-spacing:.4px;padding:3px 9px;border-radius:999px}
.card .bd{padding:14px 16px 16px;display:flex;flex-direction:column;flex:1}
.card .code{font-size:11px;color:var(--steel);font-weight:800;letter-spacing:.8px;text-transform:uppercase}
.card h3{font-size:15px;margin:3px 0 7px;color:var(--ink);line-height:1.4}
.card p.desc{font-size:12.5px;color:var(--mut);margin-top:auto;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
/* category tiles */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}
.cat-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;color:var(--ink);box-shadow:var(--sh-sm);transition:transform .18s,box-shadow .18s,border-color .18s;display:flex;flex-direction:column}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-md);border-color:#b9cfe4;color:var(--ink)}
.cat-card .ccov{position:relative;background:linear-gradient(180deg,#eef5fc,#fbfdff);padding:10px;border-bottom:1px solid var(--line)}
.cat-card .ccov img{width:100%;height:160px;object-fit:contain;transition:transform .25s}
.cat-card:hover .ccov img{transform:scale(1.06)}
.cat-card .cnt{position:absolute;right:12px;top:12px;background:var(--navy);color:#fff;border-radius:999px;padding:3px 11px;font-size:12px;font-weight:800;box-shadow:var(--sh-sm)}
.cat-card .cbody{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1}
.cat-card h3{font-size:18px;color:var(--navy);font-weight:800}
.cat-card p{font-size:13px;color:var(--mut);margin:6px 0 12px;flex:1}
.cat-card .go{font-size:13px;font-weight:800;color:var(--accent)}
.cat-card:hover .go{letter-spacing:.3px}
/* feature list */
.fts{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.ft{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--sh-sm);transition:.18s}
.ft:hover{box-shadow:var(--sh-md);transform:translateY(-2px)}
.ft .t{font-weight:800;color:var(--navy);margin-bottom:5px;font-size:16px}
.ft p{font-size:13.5px;color:var(--mut)}
/* product detail */
.pd{display:grid;grid-template-columns:minmax(0,480px) 1fr;gap:38px;align-items:start}
.pd-img{border:1px solid var(--line);background:linear-gradient(180deg,#fbfdff,#eef3fa);border-radius:20px;padding:18px;position:sticky;top:88px;box-shadow:var(--sh-sm)}
.pd-img img{width:100%;height:440px;object-fit:contain;border-radius:12px}
.pd h1{font-size:clamp(21px,2.6vw,31px);color:var(--navy);line-height:1.3;font-weight:800}
.pd .model{font-size:13px;color:var(--steel);font-weight:800;letter-spacing:.8px;text-transform:uppercase;margin:8px 0 10px}
.tag{display:inline-block;background:#e9f1fa;color:var(--steel);border-radius:999px;padding:4px 12px;font-size:12.5px;font-weight:700;margin:2px 6px 2px 0}
table.spec{width:100%;border-collapse:collapse;margin:18px 0;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--sh-sm)}
table.spec th,table.spec td{text-align:left;padding:10px 16px;border-bottom:1px solid var(--line);font-size:14px;vertical-align:top}
table.spec tr:last-child th,table.spec tr:last-child td{border-bottom:none}
table.spec th{background:#f3f7fb;color:var(--navy);width:170px;font-weight:700}
table.spec tr:nth-child(even) td{background:#fbfcfe}
.tbd{color:var(--warn);font-weight:800}
.note{background:#fff8e6;border:1px solid #f2ddb2;color:#7a5b14;padding:11px 15px;border-radius:12px;font-size:13.5px;margin:12px 0}
/* factory */
.ph-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:14px}
.ph-grid img{height:175px;width:100%;object-fit:cover;border-radius:14px;border:1px solid var(--line);box-shadow:var(--sh-sm);transition:.2s}
.ph-grid img:hover{transform:scale(1.02);box-shadow:var(--sh-md)}
.videos{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px}
.videos video{width:100%;border-radius:16px;background:#000;max-height:320px;box-shadow:var(--sh-md)}
.certs{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px}
.cert{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--sh-sm)}
.cert img{width:100%;height:auto;max-height:340px;object-fit:contain;background:#fff;padding:8px}
.cert .cap{padding:12px 16px;font-size:13.5px;color:var(--ink);font-weight:700;border-top:1px solid var(--line)}
.cert .cap small{display:block;color:var(--mut);font-weight:400;margin-top:2px}
/* form */
.inq{background:#fff;border:1px solid var(--line);border-radius:20px;padding:30px;max-width:780px;margin:0 auto;box-shadow:var(--sh-md)}
.inq label{font-size:13.5px;font-weight:700;display:block;margin:12px 0 5px;color:var(--navy)}
.inq input,.inq select,.inq textarea{width:100%;padding:11px 14px;border:1px solid #cbd5e0;border-radius:11px;font-size:15px;font-family:inherit;background:#fff;transition:.15s}
.inq input:focus,.inq select:focus,.inq textarea:focus{outline:none;border-color:var(--steel);box-shadow:0 0 0 3px rgba(45,109,176,.15)}
.inq textarea{min-height:120px}
.inq .row2{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
/* footer */
footer{background:linear-gradient(160deg,#0b1d36,#122c4e);color:#b9c9da;padding:40px 0 0;margin-top:20px;font-size:13.5px}
footer .wrap{display:flex;flex-wrap:wrap;gap:30px;justify-content:space-between;padding-bottom:24px}
footer a{color:#e2ebf4}
footer a:hover{color:#ffb59b}
.cr{width:100%;border-top:1px solid rgba(255,255,255,.12);padding:18px 0;margin-top:0;color:#8fa2b5}
.cr small{color:#8fa2b5}
/* misc */
.breadcrumb{font-size:13px;color:var(--mut);margin:26px 0 8px}
.breadcrumb a{color:var(--steel);font-weight:600}
h1.page{font-size:clamp(25px,3.4vw,36px);color:var(--navy);font-weight:800;letter-spacing:.2px}
.toolbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:16px 0 24px}
.toolbar input{flex:1;min-width:220px;padding:11px 15px;border:1px solid #cbd5e0;border-radius:11px;font-size:14px;background:#fff}
.chip{background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 15px;font-size:13px;font-weight:600;cursor:pointer;transition:.15s}
.chip:hover{border-color:var(--steel)}
.chip.on{background:var(--steel);color:#fff;border-color:var(--steel)}
@media(max-width:960px){
  .heroin{grid-template-columns:1fr;gap:34px;padding:56px 22px 84px}
  .hstage{max-width:560px;margin:0 auto}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:600px){
  .heroin{padding:44px 22px 78px}
  .hstage{grid-template-columns:1fr 1fr;gap:10px}
  .htile img{height:110px}
  .stats{margin-top:-30px}
  .stats-grid{grid-template-columns:1fr 1fr;gap:10px}
  .stat{padding:14px}
  .stat b{font-size:24px}
}
@media(max-width:840px){.pd{grid-template-columns:1fr}.pd-img{position:static}.pd-img img{height:300px}.sitehead .wrap{gap:12px}}