:root{
  --ink:#0d1520; --ink2:#2b3949; --ink3:#5c6b7c; --line:#e2e8ef;
  --bg:#fff; --bg2:#f6f8fa; --gold:#e8a317; --gold-d:#c8860a; --blue:#12507f;
  --wrap:1200px; --r:14px; --sh:0 1px 2px rgba(13,21,32,.05),0 8px 24px rgba(13,21,32,.06);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:"Segoe UI",system-ui,-apple-system,"Helvetica Neue","Noto Sans SC","Noto Sans Thai",Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;z-index:999}
.skip:focus{left:8px;top:8px}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px;border-radius:4px}

/* header */
.hd{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}
.hd-in{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;min-width:0}
.logo{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--gold),var(--gold-d));
  color:#fff;display:grid;place-items:center;flex:0 0 auto}
.logo svg{width:19px;height:19px}
.btxt{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.btxt b{font-size:15px;font-weight:600;letter-spacing:.2px;white-space:nowrap}
.btxt i{font-style:normal;font-size:10px;color:var(--ink3);max-width:190px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.nav{display:flex;gap:4px;margin-left:auto}
.nav a{padding:8px 13px;border-radius:8px;font-size:14px;color:var(--ink2);white-space:nowrap}
.nav a:hover{background:var(--bg2);color:var(--ink)}
.hd-r{display:flex;align-items:center;gap:10px}
.langsw{position:relative}
.langbtn{display:flex;align-items:center;gap:5px;padding:7px 10px;border:1px solid var(--line);
  border-radius:8px;background:#fff;cursor:pointer;font:inherit;font-size:13px;color:var(--ink2)}
.langbtn svg{width:15px;height:15px;opacity:.6}
.langmenu{position:absolute;top:calc(100% + 6px);right:0;background:#fff;border:1px solid var(--line);
  border-radius:10px;box-shadow:var(--sh);padding:6px;display:none;min-width:132px}
.langsw.open .langmenu{display:block}
.langmenu a{display:block;padding:7px 10px;border-radius:6px;font-size:13px;color:var(--ink2)}
.langmenu a:hover{background:var(--bg2)}
.langmenu a.on{background:var(--ink);color:#fff;font-weight:500}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;
  border-radius:10px;background:var(--ink);color:#fff;font-size:15px;font-weight:500;
  border:1px solid var(--ink);cursor:pointer;transition:.18s;white-space:nowrap}
.btn:hover{background:#1c2938;transform:translateY(-1px)}
.btn.ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn.ghost:hover{background:rgba(255,255,255,.14);border-color:#fff}
.btn.sm{padding:9px 16px;font-size:13.5px}
.btn.wide{width:100%}
.burger{display:none;width:38px;height:38px;border:1px solid var(--line);border-radius:8px;
  background:#fff;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:4px}
.burger span{display:block;width:17px;height:1.8px;background:var(--ink);border-radius:2px;transition:.2s}
.burger[aria-expanded=true] span:nth-child(1){transform:translateY(5.8px) rotate(45deg)}
.burger[aria-expanded=true] span:nth-child(2){opacity:0}
.burger[aria-expanded=true] span:nth-child(3){transform:translateY(-5.8px) rotate(-45deg)}

/* hero */
.hero{position:relative;min-height:min(88vh,760px);display:flex;align-items:center;
  color:#fff;background:#08111c;overflow:hidden}
.hero-bg{position:absolute;inset:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.5}
.hero-bg::after{content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(8,17,28,.94) 0%,rgba(8,17,28,.8) 48%,rgba(8,17,28,.5) 100%)}
.hero-in{position:relative;z-index:2;padding:88px 24px}
.kick{display:inline-block;font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;
  padding:6px 14px;border:1px solid rgba(255,255,255,.26);border-radius:99px;
  background:rgba(255,255,255,.08);margin-bottom:22px}
.hero h1{font-size:clamp(30px,5.2vw,56px);line-height:1.14;font-weight:600;letter-spacing:-.4px;max-width:16ch}
.hero h1 .hl{color:var(--gold)}
.lead{margin:20px 0 28px;max-width:60ch;font-size:clamp(15px,1.5vw,17px);color:rgba(255,255,255,.85)}
.cta{display:flex;gap:12px;flex-wrap:wrap}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;
  margin-top:48px;padding-top:28px;border-top:1px solid rgba(255,255,255,.16);max-width:760px}
.st b{display:block;font-size:clamp(20px,2.6vw,28px);font-weight:600;color:var(--gold);line-height:1.2}
.st span{font-size:12.5px;color:rgba(255,255,255,.68)}

/* trust */
.trust{padding:26px 0;background:var(--bg2);border-bottom:1px solid var(--line)}
.trust-t{font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink3);
  text-align:center;margin-bottom:14px}
.trust-l{list-style:none;display:flex;flex-wrap:wrap;justify-content:center;gap:10px 30px}
.trust-l li{display:flex;align-items:center;gap:7px;font-size:13px;color:var(--ink2)}
.trust-l svg{width:16px;height:16px;color:var(--gold-d);flex:0 0 auto}

/* section */
.sec{padding:clamp(56px,7vw,92px) 0}
.sec.alt{background:var(--bg2)}
.sech{max-width:660px;margin-bottom:clamp(30px,4vw,48px)}
.sech h2{font-size:clamp(24px,3.4vw,36px);font-weight:600;letter-spacing:-.3px;line-height:1.22}
.sech p{margin-top:10px;color:var(--ink3);font-size:15.5px}

/* products */
.pgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:22px}
.pcard{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  display:flex;flex-direction:column;transition:.22s}
.pcard:hover{transform:translateY(-3px);box-shadow:var(--sh);border-color:transparent}
.pimg{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg2)}
.pimg img{width:100%;height:100%;object-fit:cover;transition:.45s}
/* 白底产品图：浅底衬托，与实景图风格统一 */
.pimg.prod{background:linear-gradient(160deg,#f4f6f8,#e8edf1)}
.pimg.prod img{object-fit:contain;padding:14px}
.pcard:hover .pimg img{transform:scale(1.045)}
.ptag{position:absolute;left:12px;bottom:12px;background:rgba(8,17,28,.86);color:#fff;
  font-size:11.5px;padding:5px 11px;border-radius:99px;backdrop-filter:blur(6px)}
.pbody{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.pcat{font-size:11px;letter-spacing:.09em;text-transform:uppercase;color:var(--gold-d);
  font-weight:600;margin-bottom:7px}
.pcard h3{font-size:18px;font-weight:600;line-height:1.3;margin-bottom:9px}
.pdesc{font-size:14px;color:var(--ink3);flex:1}
.pmodel{margin-top:15px;padding-top:14px;border-top:1px dashed var(--line)}
.pmodel b{display:block;font-size:11px;letter-spacing:.07em;text-transform:uppercase;
  color:var(--ink3);font-weight:500;margin-bottom:5px}
.pmodel span{font-size:12.5px;color:var(--ink2)}

/* solutions */
.sgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:22px}
.scard{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  display:flex;flex-direction:column}
.simg{aspect-ratio:16/9;overflow:hidden;background:var(--bg2)}
.simg img{width:100%;height:100%;object-fit:cover}
.sbody{padding:0 22px 24px;position:relative}
.sico{position:absolute;top:-22px;left:22px;width:44px;height:44px;border-radius:11px;
  background:var(--ink);color:var(--gold);display:grid;place-items:center;
  box-shadow:0 4px 14px rgba(13,21,32,.18)}
.sico svg{width:22px;height:22px}
.sbody h3{font-size:17.5px;font-weight:600;margin:14px 0 8px;padding-top:2px}
.sbody p{font-size:14px;color:var(--ink3)}
.pts{list-style:none;display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}
.pts li{font-size:12px;padding:4px 10px;background:var(--bg2);border:1px solid var(--line);
  border-radius:99px;color:var(--ink2)}

/* advantages */
.agrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.acard{background:#fff;padding:30px 26px;position:relative}
.anum{position:absolute;top:22px;right:24px;font-size:32px;font-weight:600;color:var(--line)}
.aico{width:42px;height:42px;border-radius:10px;background:rgba(232,163,23,.12);color:var(--gold-d);
  display:grid;place-items:center;margin-bottom:14px}
.aico svg{width:21px;height:21px}
.acard h3{font-size:16.5px;font-weight:600;margin-bottom:8px}
.acard p{font-size:13.5px;color:var(--ink3)}

/* capacity */
.cap{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,4vw,56px);align-items:center}
.cap-t h2{font-size:clamp(24px,3.4vw,34px);font-weight:600;letter-spacing:-.3px}
.cap-t>p{margin-top:10px;color:var(--ink3);font-size:15.5px}
.caplist{list-style:none;margin:24px 0;display:grid;gap:11px}
.caplist li{display:flex;align-items:center;gap:11px;font-size:15px;color:var(--ink2)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--gold);flex:0 0 auto}
.capnote{padding:13px 16px;background:#fff;border-left:3px solid var(--gold);border-radius:0 8px 8px 0;
  font-size:14px;color:var(--ink2)}
/* height:auto 关键：图片标签带 width/height 属性，若只设 width:100%，
   某些断点下高度不会重算，会出现纵向拉伸变形 */
.cap-i img{border-radius:var(--r);box-shadow:var(--sh);width:100%;height:auto;display:block}

/* cases */
.cgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.citem{position:relative;border-radius:var(--r);overflow:hidden;aspect-ratio:4/3;background:var(--ink)}
.citem picture,.citem img{width:100%;height:100%}
.citem img{object-fit:cover;transition:.5s}
.citem:hover img{transform:scale(1.06)}
.citem figcaption{position:absolute;inset:auto 0 0 0;padding:34px 20px 18px;color:#fff;
  background:linear-gradient(transparent,rgba(8,17,28,.9))}
.citem figcaption b{display:block;font-size:15.5px;font-weight:600}
.citem figcaption span{font-size:12.5px;color:rgba(255,255,255,.72)}

/* about */
.ab{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(28px,4vw,52px);align-items:start}
.ab-t p{margin-bottom:16px;font-size:15px;color:var(--ink2);line-height:1.78}
.ab-i figure{margin-bottom:18px;border-radius:var(--r);overflow:hidden;background:#fff;
  border:1px solid var(--line)}
.ab-i img{width:100%;height:230px;object-fit:cover}
.ab-i figcaption{padding:10px 15px;font-size:13px;color:var(--ink3)}

/* contact */
.ct{display:grid;grid-template-columns:1.25fr .75fr;gap:clamp(24px,3vw,40px);align-items:start}
.cform{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:clamp(24px,3vw,34px)}
.cform h3{font-size:19px;font-weight:600;margin-bottom:20px}
.fld{margin-bottom:16px}
.fld label{display:block;font-size:13px;color:var(--ink2);margin-bottom:6px;font-weight:500}
.req{color:#c0392b;margin-left:3px}
.fld input,.fld select,.fld textarea{width:100%;padding:11px 13px;border:1px solid var(--line);
  border-radius:9px;font:inherit;font-size:14.5px;background:#fff;color:var(--ink);transition:.15s}
.fld input:focus,.fld select:focus,.fld textarea:focus{outline:none;border-color:var(--gold);
  box-shadow:0 0 0 3px rgba(232,163,23,.16)}
.fld textarea{resize:vertical;min-height:110px}
.fnote{margin-top:12px;font-size:12.5px;color:var(--ink3);text-align:center}
.cinfo{background:var(--ink);color:#fff;border-radius:var(--r);padding:clamp(24px,3vw,32px)}
.cinfo h3{font-size:17px;font-weight:600;margin-bottom:18px}
.cinfo ul{list-style:none;display:grid;gap:13px}
.cinfo li span{display:block;font-size:11.5px;color:rgba(255,255,255,.55);margin-bottom:2px}
.cinfo li a{font-size:14.5px;color:#fff;word-break:break-all}
.cinfo li a:hover{color:var(--gold)}
.caddr{margin-top:22px;padding-top:18px;border-top:1px solid rgba(255,255,255,.14);display:grid;gap:12px}
.caddr p{font-size:13px;color:rgba(255,255,255,.68);line-height:1.6}
.caddr b{color:#fff;font-weight:500}
.chours{margin-top:16px;font-size:12.5px;color:rgba(255,255,255,.5)}

/* footer */
.ft{background:#08111c;color:rgba(255,255,255,.72);padding:52px 0 0}
.ft-in{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px}
.ft .brand .btxt b{color:#fff}
.ft .brand .btxt i{color:rgba(255,255,255,.5)}
.fslogan{margin-top:16px;font-size:14px;color:rgba(255,255,255,.55);max-width:34ch}
.ft-col h4{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:#fff;
  margin-bottom:14px;font-weight:500}
.ft-col ul{list-style:none;display:grid;gap:9px}
.ft-col a{font-size:13.5px;color:rgba(255,255,255,.66)}
.ft-col a:hover{color:var(--gold)}
.faddr{margin-top:14px;font-size:12.5px;color:rgba(255,255,255,.45);line-height:1.6}
.ft-bt{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  margin-top:44px;padding:20px 24px;border-top:1px solid rgba(255,255,255,.11);
  font-size:12.5px;color:rgba(255,255,255,.45)}
.fnote{color:rgba(255,255,255,.35)}

/* responsive */
@media(max-width:1000px){
  .cap,.ab,.ct{grid-template-columns:1fr}
  .ft-in{grid-template-columns:1fr 1fr}
  .nav{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;
    border-bottom:1px solid var(--line);flex-direction:column;padding:12px 24px 18px;gap:2px;
    box-shadow:0 12px 28px rgba(13,21,32,.1)}
  .nav.on{display:flex}
  .nav a{padding:11px 8px;font-size:15px}
  .burger{display:flex}
  .btn.sm{display:none}
}
@media(max-width:680px){
  .wrap{padding:0 18px}
  .hero-in{padding:64px 18px}
  .stats{grid-template-columns:repeat(2,1fr);gap:18px 14px;margin-top:36px}
  .ft-in{grid-template-columns:1fr}
  .bdxt i{display:none}
  .hero h1{max-width:none}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}