:root{
  --ink:#0e1b2b; --steel:#1d3553; --steel-2:#2d4c72; --muted:#5d6b7c; --line:#dfe3e8;
  --paper:#f5f4f1; --card:#ffffff; --spark:#0d7f78; --spark-2:#0a6a64; --spark-lt:#2ec4b6; --ok:#2f8f5b;
  --r:6px; --max:1240px;
  --f-head:'Barlow Condensed','Noto Sans TC',sans-serif;
  --f-body:'Barlow','Noto Sans TC',system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--f-body);color:var(--ink);background:var(--paper);line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit}
h1,h2,h3{font-family:var(--f-head);font-weight:700;line-height:1.1;letter-spacing:.01em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.eyebrow{font-family:var(--f-head);font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--spark);font-size:14px;display:flex;align-items:center;gap:10px}
.eyebrow::before{content:"";width:28px;height:2px;background:var(--spark)}
.sec{padding:96px 0}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(34px,4.4vw,54px);margin-top:10px;white-space:pre-line}
.sec-head p{max-width:560px;color:var(--muted)}
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 26px;border-radius:var(--r);background:var(--spark);color:#fff;text-decoration:none;font-weight:600;border:0;cursor:pointer;font-size:15px;transition:background .2s,transform .2s}
.btn:hover{background:var(--spark-2);transform:translateY(-1px)}
.btn.ghost{background:transparent;border:1.5px solid currentColor}
.btn.ghost:hover{background:rgba(255,255,255,.08)}
.btn .arr{transition:transform .2s}.btn:hover .arr{transform:translateX(3px)}

/* nav */
.nav{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;padding:14px 32px;background:rgba(14,27,43,.96);backdrop-filter:blur(8px);color:#fff}
.logo{display:flex;align-items:center;gap:16px;text-decoration:none}
.logo-mark{display:flex;transition:transform .25s,opacity .25s}
.logo:hover .logo-mark{transform:translateY(-1px);opacity:.85}
.logo-mark img{height:60px;width:auto}
.logo-text{display:flex;flex-direction:column;justify-content:center;line-height:1.15;padding-left:16px;border-left:2px solid var(--spark-lt)}
.logo-text b{font-family:'Noto Sans TC',sans-serif;font-size:23px;font-weight:700;letter-spacing:.14em}
.logo-text small{font-family:var(--f-head);font-size:13px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;opacity:.7;margin-top:4px}
.links{display:flex;align-items:center;gap:6px}
.links a{text-decoration:none;padding:8px 14px;font-size:15px;opacity:.85;border-radius:4px;transition:opacity .2s,background .2s}
.links a:hover,.links a.on{opacity:1;background:rgba(255,255,255,.08)}
.links a.cta{background:var(--spark);opacity:1;margin-left:8px}
.lang{margin-left:10px;background:none;border:1px solid rgba(255,255,255,.35);color:#fff;font-family:var(--f-head);font-weight:600;letter-spacing:.1em;padding:6px 10px;border-radius:4px;cursor:pointer}
.burger{display:none;background:none;border:0;width:36px;height:36px;cursor:pointer;flex-direction:column;justify-content:center;gap:6px}
.burger span{display:block;height:2px;background:#fff;width:24px;margin:0 auto}

/* hero */
.hero{position:relative;min-height:calc(100vh - 90px);max-height:880px;display:flex;align-items:flex-end;color:#fff;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.04);animation:drift 18s ease-out forwards}
@keyframes drift{to{transform:scale(1)}}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(14,27,43,.93) 0%,rgba(14,27,43,.75) 45%,rgba(14,27,43,.25) 100%)}
.hero .wrap{position:relative;z-index:1;width:100%;padding-bottom:72px}
.hero h1{font-size:clamp(44px,7vw,92px);white-space:pre-line;margin:18px 0 22px;max-width:900px}
.hero p{max-width:600px;font-size:18px;opacity:.88}
.hero .btns{display:flex;gap:14px;margin-top:34px;flex-wrap:wrap}
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid rgba(255,255,255,.2);margin-top:64px}
.stat{padding:22px 20px 0 0}
.stat b{font-family:var(--f-head);font-size:clamp(30px,3.6vw,46px);display:block;line-height:1}
.stat span{font-size:14px;opacity:.7}

/* cards & grids */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
.tile{position:relative;border-radius:var(--r);overflow:hidden;background:var(--steel);color:#fff;text-decoration:none;aspect-ratio:4/3;display:block}
.tile img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.tile:hover img{transform:scale(1.05)}
.tile .cap{position:absolute;inset:auto 0 0 0;padding:40px 18px 16px;background:linear-gradient(transparent,rgba(14,27,43,.9))}
.tile .cap b{font-family:var(--f-head);font-size:22px;display:block}
.tile .cap small{opacity:.75}

.split{display:grid;grid-template-columns:1.05fr 1fr;gap:64px;align-items:center}
.split img{border-radius:var(--r);width:100%;aspect-ratio:4/3;object-fit:cover}
.prose p{margin-bottom:16px;color:#2b3a4c;white-space:pre-line}

.dark{background:var(--ink);color:#fff}
.dark .sec-head p{color:rgba(255,255,255,.65)}
.dark .prose p{color:rgba(255,255,255,.82)}
.dark .eyebrow,.hero .eyebrow,.phead .eyebrow{color:var(--spark-lt)}.dark .eyebrow::before,.hero .eyebrow::before,.phead .eyebrow::before{background:var(--spark-lt)}
.values{display:grid;grid-template-columns:repeat(5,1fr);gap:1px;background:rgba(255,255,255,.12);border-radius:var(--r);overflow:hidden}
.value{background:var(--ink);padding:30px 22px}
.value .ch{font-size:54px;font-weight:700;color:var(--spark);line-height:1;font-family:'Noto Sans TC'}
.value h3{font-size:20px;margin:12px 0 8px;letter-spacing:.08em;text-transform:uppercase}
.value p{font-size:14px;opacity:.7}

/* page header */
.phead{background:var(--ink) center/cover no-repeat;color:#fff;position:relative}
.phead::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(14,27,43,.95),rgba(14,27,43,.6))}
.phead .wrap{position:relative;z-index:1;padding-top:88px;padding-bottom:72px}
.phead h1{font-size:clamp(40px,6vw,72px);margin-top:12px}
.phead p{max-width:640px;opacity:.82;margin-top:14px;font-size:17px}

/* timeline */
.tl{position:relative;margin-left:120px}
.tl::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:2px;background:var(--line)}
.tl-item{position:relative;padding:0 0 38px 40px}
.tl-item::before{content:"";position:absolute;left:-6px;top:10px;width:14px;height:14px;border-radius:50%;background:var(--paper);border:3px solid var(--spark)}
.tl-year{position:absolute;left:-120px;top:0;width:96px;text-align:right;font-family:var(--f-head);font-size:30px;font-weight:700;color:var(--steel)}
.tl-item p{max-width:720px;color:#2b3a4c;font-size:17px}
.tl-item.major .tl-year{color:var(--spark)}

/* process */
.proc{display:grid;grid-template-columns:80px 1fr;gap:28px;padding:56px 0;border-top:1px solid var(--line)}
.proc:first-child{border-top:0}
.proc .num{font-family:var(--f-head);font-size:56px;color:var(--spark);line-height:1;font-weight:700}
.proc h3{font-size:34px;margin-bottom:8px}
.proc .en{font-family:var(--f-head);letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-size:14px}
.proc p{max-width:680px;margin:10px 0 22px;color:#2b3a4c}
.gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}
.gallery img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r);cursor:zoom-in}

/* products */
.toolbar{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-bottom:28px}
.search{flex:1;min-width:240px;padding:13px 16px;border:1px solid var(--line);border-radius:var(--r);font:inherit;background:#fff}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:28px}
.chip{border:1px solid var(--line);background:#fff;padding:7px 14px;border-radius:99px;cursor:pointer;font:inherit;font-size:14px;color:var(--ink)}
.chip.on{background:var(--steel);color:#fff;border-color:var(--steel)}
.chip i{font-style:normal;opacity:.55;margin-left:4px}
.pgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:18px}
.pcard{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;text-decoration:none;display:flex;flex-direction:column;transition:box-shadow .2s,transform .2s}
.pcard:hover{box-shadow:0 12px 30px rgba(14,27,43,.12);transform:translateY(-2px)}
.pcard .ph{aspect-ratio:1;background:#fff;display:flex;align-items:center;justify-content:center;border-bottom:1px solid var(--line);padding:14px}
.pcard .ph img{max-height:100%;object-fit:contain}
.pcard .ph.none{color:var(--muted);font-size:13px;background:repeating-linear-gradient(45deg,#f3f4f6,#f3f4f6 10px,#eceef1 10px,#eceef1 20px)}
.pcard .bd{padding:14px 16px 16px}
.pcard .code{font-family:var(--f-head);font-weight:600;color:var(--spark);letter-spacing:.06em}
.pcard h3{font-family:var(--f-body);font-size:16px;font-weight:600;margin:2px 0 4px}
.pcard .sp{font-size:13px;color:var(--muted)}
.pcard .oem{margin-top:8px;font-size:12px;background:#eef3f8;color:var(--steel);padding:4px 8px;border-radius:4px;display:inline-block}
.empty{padding:60px;text-align:center;color:var(--muted)}

.pdetail{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.pdetail .big{background:#fff;border:1px solid var(--line);border-radius:var(--r);aspect-ratio:1;display:flex;align-items:center;justify-content:center;padding:30px}
.pdetail .big img{width:85%;max-height:100%;object-fit:contain}
.spec{width:100%;border-collapse:collapse;margin:24px 0}
.spec th,.spec td{text-align:left;padding:12px 0;border-bottom:1px solid var(--line);vertical-align:top}
.spec th{width:38%;color:var(--muted);font-weight:500}
.tm{font-size:12px;line-height:1.6;color:var(--muted);margin:-8px 0 22px}
.back{display:inline-block;margin-bottom:24px;color:var(--muted);text-decoration:none}

/* contact */
.cgrid{display:grid;grid-template-columns:1fr 1.3fr;gap:56px}
.cinfo dl{display:grid;gap:22px}
.cinfo dt{font-family:var(--f-head);letter-spacing:.14em;text-transform:uppercase;color:var(--spark);font-size:13px}
.cinfo dd{font-size:18px}
.map{margin-top:28px;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);aspect-ratio:4/3}
.map iframe{width:100%;height:100%;border:0}
form.cf{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:34px;display:grid;grid-template-columns:1fr 1fr;gap:16px}
.cf label{display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--muted)}
.cf .full{grid-column:1/-1}
.cf input,.cf textarea,.cf select{font:inherit;color:var(--ink);padding:12px 14px;border:1px solid var(--line);border-radius:var(--r);background:var(--paper)}
.cf input:focus,.cf textarea:focus{outline:2px solid var(--spark);outline-offset:-1px;background:#fff}
.cf .hp{position:absolute;left:-9999px}
.msg{padding:12px 14px;border-radius:var(--r);font-size:15px}
.msg.ok{background:#e7f5ec;color:var(--ok)}.msg.err{background:#fdecea;color:#b3261e}

/* cta band + footer */
.band{background:var(--spark);color:#fff}
.band .wrap{display:flex;justify-content:space-between;align-items:center;gap:24px;padding-top:56px;padding-bottom:56px;flex-wrap:wrap}
.band h2{font-size:clamp(28px,3.4vw,42px)}
.band .btn{background:var(--ink)}
.foot{background:#0a1420;color:rgba(255,255,255,.7);font-size:14px}
.foot .wrap{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding-top:56px;padding-bottom:40px}
.foot h4{color:#fff;font-family:var(--f-head);letter-spacing:.14em;text-transform:uppercase;margin-bottom:12px;font-size:14px}
.foot a{display:block;text-decoration:none;padding:3px 0}.foot a:hover{color:#fff}
.foot a.qr{display:inline-block;margin-top:16px;padding:8px;background:#fff;border-radius:8px;width:118px;transition:transform .2s}.foot a.qr:hover{transform:translateY(-2px)}
.foot a.qr img{width:100%;height:auto}
.foot .qr-cap{display:block;font-size:12px;margin-top:8px;opacity:.7}
.foot .copy{border-top:1px solid rgba(255,255,255,.1);padding:18px 24px;text-align:center;font-size:13px}

.lightbox{position:fixed;inset:0;background:rgba(5,10,16,.92);display:flex;align-items:center;justify-content:center;z-index:100;padding:24px;cursor:zoom-out}
.lightbox img{max-height:90vh;border-radius:var(--r)}

.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}.hero-bg{animation:none}}

@media (max-width:960px){
  .g4{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(2,1fr)}
  .split,.pdetail,.cgrid{grid-template-columns:1fr;gap:36px}
  .values{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .foot .wrap{grid-template-columns:1fr}
}
@media (max-width:1100px){
  .logo-mark img{height:50px}
  .logo-text b{font-size:19px;letter-spacing:.08em}.logo-text small{font-size:11px;letter-spacing:.1em}
  .links a{padding:8px 9px;font-size:14px;white-space:nowrap}
}
@media (max-width:900px){
  .nav{padding:12px 16px}
  .logo-mark img{height:42px}
  .logo{gap:12px}.logo-text{padding-left:12px}.logo-text b{font-size:16px;letter-spacing:.06em}.logo-text small{font-size:9.5px;letter-spacing:.08em}
  .burger{display:flex}
  .links{display:none;position:absolute;top:100%;left:0;right:0;background:var(--ink);flex-direction:column;align-items:stretch;padding:12px 16px 20px}
  .links.open{display:flex}
  .links a.cta{margin:8px 0 0;text-align:center}
  .lang{margin:10px 0 0;align-self:flex-start}
}
@media (max-width:600px){
  .wrap{padding:0 16px}
  .sec{padding:64px 0}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .values{grid-template-columns:1fr}
  .tl{margin-left:0}.tl::before{left:6px}
  .tl-item{padding-left:36px}.tl-item::before{left:0}
  .tl-year{position:static;text-align:left;width:auto;font-size:26px;display:block}
  .proc{grid-template-columns:1fr;gap:8px}
  form.cf{grid-template-columns:1fr;padding:22px}
  .pgrid{grid-template-columns:repeat(2,1fr);gap:12px}
}