/* Layout: precision-steel — white engineering sheets alternate with graphite photo bands; every page carries a drawn element (profile, burial section, trench) as proof of engineering. */
:root{
  --bg:#ffffff; --bg-2:#f2f3f5; --ink:#14171a; --muted:#5b626a; --line:#dcdfe3;
  --red:#c70026; --red-2:#9e001e; --on-red:#ffffff; --steel:#8c959e; --tint:#fbedf0;
  --ok:#17784a; --warn:#b35208;
  --graphite:#16191c; --graphite-2:#20252a; --on-dark:#eef0f2; --on-dark-mute:#a3abb3; --dark-line:#2f363c;
  --f-head:"Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,sans-serif;
  --f-cond:"Barlow Condensed","Arial Narrow","Noto Sans TC",sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,Consolas,monospace;
  --wrap:1240px; --hdr:72px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#121417; --bg-2:#181b1f; --ink:#eceef0; --muted:#9aa2aa; --line:#2b3136;
  --red:#e3304a; --red-2:#ff5068; --tint:#2a161a; --ok:#47c07c; --warn:#f0a050; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#121417; --bg-2:#181b1f; --ink:#eceef0; --muted:#9aa2aa; --line:#2b3136;
  --red:#e3304a; --red-2:#ff5068; --tint:#2a161a; --ok:#47c07c; --warn:#f0a050; color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--hdr) + 12px)}
body{margin:0;background:var(--bg);color:var(--ink);font:400 16px/1.75 var(--f-head);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:90;background:var(--bg)}
img{display:block;max-width:100%;height:auto}
a{color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;text-wrap:balance;font-family:var(--f-head)}
p{margin:0}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
.num{font-family:var(--f-cond);font-variant-numeric:tabular-nums}
.mono{font-family:var(--f-mono);font-variant-numeric:tabular-nums}
.muted{color:var(--muted)}
html[lang="en"] .tc,html[lang="en"] .ko{display:none!important}
html[lang="ko"] .tc,html[lang="ko"] .en{display:none!important}
html:not([lang="en"]):not([lang="ko"]) .en,html:not([lang="en"]):not([lang="ko"]) .ko{display:none!important}
:focus-visible{outline:2px solid var(--red);outline-offset:3px}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}html{scroll-behavior:auto}}

/* ---------- header ---------- */
.hdr{position:sticky;top:env(safe-area-inset-top,0px);z-index:80;background:color-mix(in srgb,var(--bg) 94%,transparent);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.hdr .wrap{display:flex;align-items:center;gap:24px;height:var(--hdr)}
.brand{display:flex;align-items:center;background:#fff;border-radius:6px;padding:5px 8px;flex:none}
.brand img{height:36px;width:auto}
.menu{display:flex;align-items:center;gap:2px;margin-left:auto}
.menu a{position:relative;text-decoration:none;font-weight:500;font-size:15.5px;padding:10px 14px;color:var(--ink)}
.menu a::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;background:var(--red);transform:scaleX(0);transform-origin:left;transition:transform .25s}
.menu a:hover::after,.menu a[aria-current="page"]::after{transform:scaleX(1)}
.menu a[aria-current="page"]{color:var(--red)}
.lang{display:flex;border:1px solid var(--line);border-radius:999px;padding:3px;flex:none}
.lang button{font:600 12.5px/1 var(--f-head);background:none;border:0;color:var(--muted);padding:7px 11px;border-radius:999px;cursor:pointer}
.lang button[aria-pressed="true"]{background:var(--ink);color:var(--bg)}
.burger{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:6px;width:42px;height:38px;cursor:pointer;color:var(--ink)}
.burger span{display:block;width:18px;height:2px;background:currentColor;margin:4px auto}
@media (max-width:960px){
  .burger{display:block}
  .menu{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;background:var(--bg);border-bottom:1px solid var(--line);padding:8px max(20px,env(safe-area-inset-right,0px)) 16px max(20px,env(safe-area-inset-left,0px))}
  .menu.open{display:flex}
  .menu a{padding:12px 4px;border-bottom:1px solid var(--line)}
  .menu a::after{display:none}
  .brand img{height:30px}
}

/* ---------- shared blocks ---------- */
section{padding-block:clamp(64px,9vw,112px)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font:600 13px/1 var(--f-head);letter-spacing:.16em;text-transform:uppercase;color:var(--red)}
.eyebrow::before{content:"";width:28px;height:2px;background:currentColor}
.h2{font-size:clamp(28px,3.6vw,46px);font-weight:900;letter-spacing:-.005em;margin-top:16px}
.lead{font-size:clamp(16px,1.4vw,18px);color:var(--muted);max-width:42em;margin-top:18px}
.head-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px 64px;align-items:end;margin-bottom:clamp(36px,5vw,60px)}
.head-row .lead{margin-top:0}
@media (max-width:860px){.head-row{grid-template-columns:minmax(0,1fr)}}
.btn{display:inline-flex;align-items:center;gap:10px;font:700 15px/1 var(--f-head);text-decoration:none;padding:15px 22px;border-radius:2px;border:1px solid transparent;cursor:pointer;transition:background .2s,color .2s,border-color .2s}
.btn .arr{transition:transform .2s}
.btn:hover .arr{transform:translateX(4px)}
.btn-red{background:var(--red);color:var(--on-red)}
.btn-red:hover{background:var(--red-2)}
.btn-line{border-color:currentColor;background:transparent}
.btn-line:hover{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.dark .btn-line:hover,.hero .btn-line:hover{background:#fff;color:#111;border-color:#fff}
.dark{background:var(--graphite);color:var(--on-dark)}
.dark .lead,.dark .muted{color:var(--on-dark-mute)}
.dark .eyebrow{color:#ff6075}
.soft{background:var(--bg-2)}
.link{display:inline-flex;gap:8px;align-items:center;font-weight:700;text-decoration:none;color:var(--red);font-size:15px}
.link:hover .arr{transform:translateX(4px)}
.link .arr{transition:transform .2s}

/* ---------- page hero (inner pages) ---------- */
.phero{position:relative;color:#fff;background:var(--graphite);overflow:hidden}
.phero .bgimg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.55}
.phero .bgimg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(18,20,23,.92),rgba(18,20,23,.35))}
.phero .wrap{position:relative;padding-block:clamp(72px,9vw,120px) clamp(48px,6vw,72px)}
.crumb{font-size:13px;color:#b9c0c6;letter-spacing:.06em}
.crumb a{text-decoration:none}
.phero h1{font-size:clamp(34px,5vw,60px);font-weight:900;margin-top:14px}
.phero p{color:#d3d8dc;max-width:40em;margin-top:14px;font-size:17px}
.subnav{border-bottom:1px solid var(--line);background:var(--bg);position:sticky;top:calc(env(safe-area-inset-top,0px) + var(--hdr));z-index:40}
.subnav .wrap{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}
.subnav a{flex:none;text-decoration:none;font-size:14.5px;font-weight:500;color:var(--muted);padding:14px 16px;border-bottom:2px solid transparent}
.subnav a:hover{color:var(--ink);border-bottom-color:var(--red)}

/* ---------- home hero ---------- */
.hero{position:relative;min-height:min(86vh,820px);display:flex;align-items:flex-end;color:#fff;background:#111;overflow:hidden}
.hero .slides{position:absolute;inset:0}
.hero .slide{position:absolute;inset:-4%;background-size:cover;background-position:center;opacity:0;animation:hx 24s infinite}
.hero .slide:nth-child(1){animation-delay:0s}
.hero .slide:nth-child(2){animation-delay:8s}
.hero .slide:nth-child(3){animation-delay:16s}
@keyframes hx{0%{opacity:0;transform:scale(1.02) translateX(0)}6%{opacity:1}33%{opacity:1}40%{opacity:0;transform:scale(1.1) translateX(-2%)}100%{opacity:0}}
@media (prefers-reduced-motion:reduce){.hero .slide:nth-child(1){opacity:1}}
.hero video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero .shade{position:absolute;inset:0;background:linear-gradient(0deg,rgba(10,12,14,.92) 0%,rgba(10,12,14,.45) 45%,rgba(10,12,14,.15) 100%),linear-gradient(90deg,rgba(10,12,14,.6),transparent 60%)}
.hero .wrap{position:relative;width:100%;padding-block:120px 64px}
.hero h1{font-size:clamp(40px,7vw,96px);font-weight:900;line-height:1.05;letter-spacing:-.01em;max-width:11em}
.hero h1 em{font-style:normal;color:#ff4a62}
.hero .sub{font-size:clamp(16px,1.5vw,19px);color:#d7dce0;max-width:36em;margin-top:22px}
.hero .cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero .meta{display:flex;flex-wrap:wrap;gap:8px 28px;margin-top:48px;padding-top:20px;border-top:1px solid rgba(255,255,255,.18);font:500 13px/1.4 var(--f-mono);color:#b8c0c7}

/* trust band */
.trust{background:var(--graphite);color:var(--on-dark);border-top:1px solid var(--dark-line)}
.trust .wrap{display:grid;grid-template-columns:repeat(5,minmax(0,1fr))}
.trust .t{padding:26px 20px;border-left:1px solid var(--dark-line)}
.trust .t:first-child{border-left:0;padding-left:0}
.trust .v{font:700 clamp(26px,2.8vw,38px)/1.05 var(--f-cond);letter-spacing:.01em}
.trust .v small{font-size:.5em;color:var(--on-dark-mute);margin-left:3px}
.trust .k{font-size:13px;color:var(--on-dark-mute);margin-top:6px}
@media (max-width:900px){.trust .wrap{grid-template-columns:repeat(2,minmax(0,1fr))}.trust .t{border-left:0;padding-left:0;border-top:1px solid var(--dark-line)}.trust .t:nth-child(-n+2){border-top:0}.trust .t:last-child{grid-column:1/-1}}

/* product split (home) */
.prod-rows{display:grid;gap:2px;background:var(--line)}
.prow{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,5fr);background:var(--bg);min-height:360px}
.prow .pv{background:var(--bg-2);display:grid;place-items:center;padding:28px;overflow:hidden}
.prow .pv img{max-height:300px;width:auto;transition:transform .8s ease}
.prow:hover .pv img{transform:scale(1.04)}
.prow .pv.photo{padding:0}
.prow .pv.photo img{width:100%;height:100%;max-height:none;object-fit:cover}
.prow .pt{padding:clamp(28px,4vw,52px);display:grid;align-content:center;gap:14px}
.prow .code{font:700 13px var(--f-mono);color:var(--red);letter-spacing:.08em}
.prow h3{font-size:clamp(24px,2.4vw,32px);font-weight:900}
.prow .specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}
.chip{font:500 12.5px/1 var(--f-mono);padding:8px 10px;border:1px solid var(--line);border-radius:2px;color:var(--ink);background:var(--bg)}
.prow:nth-child(even){grid-template-columns:minmax(0,5fr) minmax(0,6fr)}
.prow:nth-child(even) .pv{order:2}
@media (max-width:860px){.prow,.prow:nth-child(even){grid-template-columns:minmax(0,1fr)}.prow:nth-child(even) .pv{order:0}.prow .pv{min-height:240px}}

/* compare bars */
.compare{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(32px,6vw,80px);align-items:center}
.bars{display:grid;gap:26px}
.bar-g h4{font-size:15px;font-weight:700;margin-bottom:10px;display:flex;justify-content:space-between;gap:12px}
.bar-g h4 span{font:500 13px var(--f-mono);color:var(--on-dark-mute)}
.bar{position:relative;height:30px;background:var(--graphite-2);border:1px solid var(--dark-line);margin-top:6px}
.bar i{position:absolute;inset:0 auto 0 0;display:flex;align-items:center;padding-left:10px;font:600 12.5px var(--f-mono);font-style:normal;white-space:nowrap}
.bar .rc{background:#4b545c;color:#fff}
.bar .cs{background:var(--red);color:#fff}
.bar .rng{background:repeating-linear-gradient(45deg,rgba(227,48,74,.55) 0 6px,rgba(227,48,74,.25) 6px 12px)}
.bar-note{font-size:13px;color:var(--on-dark-mute)}
@media (max-width:860px){.compare{grid-template-columns:minmax(0,1fr)}}

/* profile drawing */
.drawing{background:var(--bg);border:1px solid var(--line);position:relative}
.drawing svg{display:block;width:100%;height:auto}
.drawing .tb{display:flex;justify-content:space-between;gap:12px;border-top:1px solid var(--line);padding:10px 14px;font:500 12px var(--f-mono);color:var(--muted)}
.draw-line{stroke-dasharray:1400;stroke-dashoffset:0;animation:draw 2.4s ease .2s both}
@keyframes draw{from{stroke-dashoffset:1400}to{stroke-dashoffset:0}}

/* app grid */
.apps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.app{position:relative;overflow:hidden;background:var(--graphite);color:#fff;min-height:320px;display:flex;align-items:flex-end}
.app img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.62;transition:transform .8s,opacity .4s}
.app:hover img{transform:scale(1.06);opacity:.5}
.app .c{position:relative;padding:22px;background:linear-gradient(0deg,rgba(12,14,16,.92),transparent);width:100%}
.app h3{font-size:20px;font-weight:700}
.app p{font-size:14px;color:#cdd3d8;margin-top:6px}
@media (max-width:980px){.apps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:520px){.apps{grid-template-columns:minmax(0,1fr)}.app{min-height:240px}}

/* partners */
.partners{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:0;align-items:stretch;border:1px solid var(--line)}
.partners .p{padding:clamp(24px,3.5vw,40px);display:grid;gap:10px;align-content:start}
.partners .x{display:grid;place-items:center;padding:0 20px;font:700 34px var(--f-cond);color:var(--red);border-inline:1px solid var(--line);background:var(--bg-2)}
.partners .pct{font:700 52px/1 var(--f-cond);color:var(--red)}
.partners h3{font-size:20px;font-weight:700}
@media (max-width:760px){.partners{grid-template-columns:minmax(0,1fr)}.partners .x{border-inline:0;border-block:1px solid var(--line);padding:10px}}

/* CTA band */
.cta-band{background:var(--red);color:#fff}
.cta-band .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;padding-block:clamp(44px,6vw,64px)}
.cta-band h2{font-size:clamp(24px,3vw,36px);font-weight:900}
.cta-band p{color:#ffe3e7;margin-top:8px}
.cta-band .btn{background:#fff;color:#a0001f}
.cta-band .btn:hover{background:#14171a;color:#fff}

/* ---------- about ---------- */
.split{display:grid;grid-template-columns:minmax(0,6fr) minmax(0,5fr);gap:clamp(32px,6vw,80px);align-items:center}
.split.rev{grid-template-columns:minmax(0,5fr) minmax(0,6fr)}
.split .txt p+p{margin-top:16px}
.split figure{margin:0}
.split figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
@media (max-width:860px){.split,.split.rev{grid-template-columns:minmax(0,1fr)}}
.tl{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(32px,5vw,64px)}
.tl h3{font-size:19px;font-weight:900;padding-bottom:14px;border-bottom:2px solid var(--ink)}
.tl ol{list-style:none;margin:0;padding:0;position:relative}
.tl li{display:grid;grid-template-columns:96px minmax(0,1fr);gap:16px;padding:14px 0;border-bottom:1px solid var(--line);font-size:15px}
.tl li .num{font-size:20px;font-weight:600;color:var(--muted);line-height:1.4}
.tl li.now{background:var(--tint);padding-inline:12px;margin-inline:-12px;border-bottom-color:transparent}
.tl li.now .num,.tl li.now span{color:var(--red);font-weight:700}
@media (max-width:860px){.tl{grid-template-columns:minmax(0,1fr)}}
.values{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:2px;background:var(--dark-line)}
.values div{background:var(--graphite);padding:clamp(24px,3vw,36px)}
.values .n{font:700 15px var(--f-mono);color:#ff6075}
.values h3{font-size:22px;font-weight:900;margin:14px 0 10px}
.values p{color:var(--on-dark-mute);font-size:15px}
@media (max-width:860px){.values{grid-template-columns:minmax(0,1fr)}}

/* ---------- products ---------- */
.pdetail{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:clamp(32px,5vw,72px);align-items:start;padding-block:clamp(48px,6vw,72px);border-top:1px solid var(--line)}
.pdetail:first-of-type{border-top:0;padding-top:0}
.pdetail .vis{background:var(--bg-2);display:grid;place-items:center;padding:24px;aspect-ratio:4/3}
.pdetail .vis img{max-height:100%;width:auto;object-fit:contain}
.pdetail .vis.photo{padding:0}
.pdetail .vis.photo img{width:100%;height:100%;object-fit:cover}
.pdetail h2{font-size:clamp(26px,3vw,36px);font-weight:900;margin-top:10px}
.pdetail .desc{color:var(--muted);margin-top:14px}
.status{display:inline-flex;align-items:center;gap:8px;font:600 12.5px var(--f-head);letter-spacing:.06em;color:var(--ok)}
.status::before{content:"";width:8px;height:8px;border-radius:50%;background:currentColor}
.status.plan{color:var(--muted)}
.sheet{width:100%;border-collapse:collapse;margin-top:22px;font-size:14.5px}
.sheet th{text-align:left;font-weight:500;color:var(--muted);padding:11px 16px 11px 0;border-top:1px solid var(--line);width:36%;vertical-align:top}
.sheet td{padding:11px 0;border-top:1px solid var(--line);font-family:var(--f-mono);font-size:14px}
.sheet tr:last-child th,.sheet tr:last-child td{border-bottom:1px solid var(--line)}
@media (max-width:860px){.pdetail{grid-template-columns:minmax(0,1fr)}}
.profiles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.profiles .drawing h3{font-size:16px;font-weight:700;padding:14px 16px 0}
.profiles .drawing .sub{font:500 12.5px var(--f-mono);color:var(--muted);padding:2px 16px 0}
@media (max-width:860px){.profiles{grid-template-columns:minmax(0,1fr)}}
.joint{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:28px}
.joint figure{margin:0;background:var(--bg);border:1px solid var(--line);padding:18px}
.joint figure img{width:100%;height:auto}
.joint figcaption{font-size:14px;color:var(--muted);margin-top:10px}
@media (max-width:640px){.joint{grid-template-columns:minmax(0,1fr)}}
.feat{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border-top:2px solid var(--ink)}
.feat div{padding:22px 20px 8px 0}
.feat div+div{padding-left:20px;border-left:1px solid var(--line)}
.feat .n{font:700 13px var(--f-mono);color:var(--red)}
.feat h3{font-size:18px;font-weight:700;margin:10px 0 8px}
.feat p{font-size:14px;color:var(--muted);line-height:1.7}
@media (max-width:980px){.feat{grid-template-columns:repeat(2,minmax(0,1fr))}.feat div+div{border-left:0;padding-left:0}.feat div{border-bottom:1px solid var(--line);padding-right:16px}}
@media (max-width:520px){.feat{grid-template-columns:minmax(0,1fr)}}

/* ---------- technical ---------- */
.calc{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,7fr);border:1px solid var(--line);background:var(--bg)}
.calc form{padding:28px;display:grid;gap:20px;border-right:1px solid var(--line);align-content:start;background:var(--bg-2)}
.calc label,.calc .lbl{display:block;font-size:13px;font-weight:700;color:var(--muted);margin-bottom:8px;letter-spacing:.02em}
.calc select,.calc input{width:100%;font:500 16px var(--f-head);color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:2px;padding:12px}
.calc input[type=range]{padding:0;border:0;background:none;accent-color:var(--red)}
.rangebox{display:grid;grid-template-columns:minmax(0,1fr) 92px;gap:12px;align-items:center}
.seg{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border:1px solid var(--line);border-radius:2px;overflow:hidden}
.seg button{font:600 15px var(--f-mono);padding:12px;background:var(--bg);color:var(--ink);border:0;cursor:pointer}
.seg button+button{border-left:1px solid var(--line)}
.seg button[aria-pressed="true"]{background:var(--ink);color:var(--bg)}
.calc .out{padding:28px;display:grid;gap:20px;align-content:start;min-width:0}
.verdict{display:flex;align-items:center;gap:14px;padding:14px 18px;border:1px solid;font-weight:700;font-size:18px}
.verdict .dot{width:12px;height:12px;border-radius:50%;background:currentColor;flex:none}
.verdict small{display:block;font:500 13px var(--f-mono);color:var(--muted);margin-top:2px}
.verdict.ok{color:var(--ok);border-color:color-mix(in srgb,var(--ok) 40%,transparent);background:color-mix(in srgb,var(--ok) 7%,transparent)}
.verdict.bad{color:var(--warn);border-color:color-mix(in srgb,var(--warn) 40%,transparent);background:color-mix(in srgb,var(--warn) 7%,transparent)}
.section-svg{background:var(--bg-2);border:1px solid var(--line)}
.section-svg svg{display:block;width:100%;height:auto}
.kv{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.kv div{background:var(--bg);padding:14px}
.kv span{display:block;font-size:12.5px;color:var(--muted)}
.kv b{font:700 30px/1.15 var(--f-cond);font-variant-numeric:tabular-nums}
.kv b small{font-size:.48em;color:var(--muted);margin-left:3px;font-weight:600}
@media (max-width:980px){.calc{grid-template-columns:minmax(0,1fr)}.calc form{border-right:0;border-bottom:1px solid var(--line)}.kv{grid-template-columns:repeat(2,minmax(0,1fr))}}
.note{font-size:13px;color:var(--muted)}
.tbl{overflow-x:auto;border:1px solid var(--line);background:var(--bg)}
table.cover{border-collapse:collapse;width:100%;min-width:780px;font-size:14px}
table.cover th,table.cover td{padding:11px 12px;border-bottom:1px solid var(--line);text-align:right;font-variant-numeric:tabular-nums}
table.cover thead th{font-weight:600;font-size:13px;color:var(--muted);background:var(--bg-2);vertical-align:bottom}
table.cover thead tr:first-child th{color:var(--ink)}
table.cover thead th.g{background:var(--red);color:var(--on-red);text-align:center}
table.cover td:first-child,table.cover th:first-child{text-align:left;font-weight:700}
table.cover td{font-family:var(--f-mono);font-size:13.5px}
table.cover td.h{color:var(--red);font-weight:600}
table.cover .l{border-left:1px solid var(--line)}
table.cover tr.sel td{background:var(--tint)}
.std{width:100%;border-collapse:collapse;font-size:14.5px}
.std th,.std td{text-align:left;padding:13px 16px 13px 0;border-top:1px solid var(--line);vertical-align:top}
.std thead th{font-size:13px;color:var(--muted);font-weight:600;border-top:2px solid var(--ink)}
.std td.code{font-family:var(--f-mono);font-size:13.5px;white-space:nowrap;color:var(--red);font-weight:500}
.std-wrap{overflow-x:auto}
.std-wrap table{min-width:640px}
.cols2{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(32px,5vw,64px)}
.cols2 figure{align-self:start}
.cols2 h3{font-size:19px;font-weight:900;margin-bottom:14px}
.cols2 ol{margin:0;padding-left:1.2em;display:grid;gap:10px;font-size:15px}
@media (max-width:860px){.cols2{grid-template-columns:minmax(0,1fr)}}
.software{display:grid;grid-template-columns:auto minmax(0,1fr);gap:28px;align-items:start;border:1px solid var(--dark-line);padding:clamp(24px,3.5vw,40px);background:var(--graphite-2)}
.software img{width:88px;height:88px;border-radius:20px}
.software h3{font-size:26px;font-weight:900}
.software ul{margin:16px 0 0;padding-left:1.1em;display:grid;gap:6px;color:var(--on-dark-mute);font-size:15px}
@media (max-width:560px){.software{grid-template-columns:minmax(0,1fr)}}

/* ---------- install ---------- */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:2px;background:var(--line);counter-reset:s}
.steps li{background:var(--bg);padding:24px 20px;counter-increment:s;min-width:0}
.steps li::before{content:counter(s,decimal-leading-zero);display:block;font:700 40px/1 var(--f-cond);color:var(--red);margin-bottom:16px}
.steps h3{font-size:18px;font-weight:700;margin-bottom:8px}
.steps p{font-size:14px;color:var(--muted)}
@media (max-width:980px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:520px){.steps{grid-template-columns:minmax(0,1fr)}}
.small-tbl{overflow-x:auto}
.small-tbl table{border-collapse:collapse;width:100%;min-width:560px;font-size:14px}
.small-tbl th,.small-tbl td{padding:11px 10px;border-bottom:1px solid var(--line);text-align:center;font-variant-numeric:tabular-nums}
.small-tbl thead th{background:var(--bg-2);font-size:13px;color:var(--muted);font-weight:600}
.small-tbl th[scope=row]{text-align:left;color:var(--muted);font-weight:600}
.small-tbl td{font-family:var(--f-mono)}
.gallery{display:grid;grid-template-columns:2fr 1fr 1fr;grid-template-rows:auto auto;gap:12px}
.gallery img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.gallery img:first-child{grid-row:span 2;aspect-ratio:auto}
@media (max-width:760px){.gallery{grid-template-columns:1fr 1fr}.gallery img:first-child{grid-column:1/-1;grid-row:auto;aspect-ratio:16/9}}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(32px,5vw,64px);align-items:start}
.cinfo{display:grid;gap:2px;background:var(--line);border:1px solid var(--line)}
.cinfo>div{background:var(--bg);padding:24px}
.cinfo .k{font-size:13px;color:var(--muted);margin-bottom:6px}
.cinfo .v{font-size:18px;font-weight:500;word-break:break-word}
.cinfo .act{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.cinfo .btn{padding:11px 16px;font-size:14px}
.checklist{list-style:none;margin:0;padding:0;display:grid;gap:0;border-top:2px solid var(--ink)}
.checklist li{display:grid;grid-template-columns:28px minmax(0,1fr);gap:12px;padding:14px 0;border-bottom:1px solid var(--line);font-size:15px}
.checklist li::before{content:"";width:16px;height:16px;border:2px solid var(--red);margin-top:5px}
.dl{display:grid;gap:12px}
.dl a,.dl .item{display:grid;grid-template-columns:48px minmax(0,1fr) auto;gap:16px;align-items:center;text-decoration:none;background:var(--bg);border:1px solid var(--line);padding:16px 18px;transition:border-color .2s}
.dl a:hover{border-color:var(--red)}
.dl .ext{font:700 12px/48px var(--f-mono);text-align:center;background:var(--tint);color:var(--red)}
.dl b{display:block;font-size:15.5px}
.dl span.s{font-size:13px;color:var(--muted)}
.dl .go{font:700 13px var(--f-head);color:var(--red)}
@media (max-width:860px){.contact-grid{grid-template-columns:minmax(0,1fr)}}

/* ---------- footer ---------- */
.ftr{background:#0f1113;color:#a3abb3;font-size:14px}
.ftr .wrap{display:grid;grid-template-columns:minmax(0,5fr) repeat(3,minmax(0,2fr));gap:32px;padding-block:56px 36px}
.ftr h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:14px;letter-spacing:.04em}
.ftr ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.ftr a{text-decoration:none}
.ftr a:hover{color:#fff}
.ftr .co{color:#fff;font-size:17px;font-weight:700}
.ftr .bottom{border-top:1px solid #23292e}
.ftr .bottom .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 24px;padding-block:18px;grid-template-columns:none;font-size:12.5px}
@media (max-width:860px){.ftr .wrap{grid-template-columns:repeat(2,minmax(0,1fr))}.ftr .wrap>div:first-child{grid-column:1/-1}}

[hidden]{display:none!important}

.shapes{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:2px;background:var(--line);border:1px solid var(--line)}
.shapes figure{margin:0;background:var(--bg);padding:18px 14px 14px;text-align:center}
.shapes svg{width:100%;max-width:180px;height:auto;margin:0 auto}
.shapes figcaption{font-weight:700;font-size:15px;margin-top:6px}
@media (max-width:640px){.shapes{grid-template-columns:repeat(2,minmax(0,1fr))}}
.illus{font:600 11.5px var(--f-mono);color:var(--muted);letter-spacing:.06em;margin-top:8px}

@media (max-width:480px){.hdr .wrap{gap:10px}.brand{padding:4px 6px}.brand img{height:24px}.lang button{padding:6px 7px;font-size:11.5px}.burger{width:38px}}

/* v3: wonder arch / engineering / projects */
.has-hero .wrap{padding-block:clamp(80px,10vw,130px) clamp(56px,7vw,84px)}
.has-hero h1{max-width:14em}
.feat-dark{border-top-color:var(--on-dark)}
.feat-dark div+div{border-left-color:var(--dark-line)}
.feat-dark p{color:var(--on-dark-mute)}
@media (max-width:980px){.feat-dark div{border-bottom-color:var(--dark-line)}}
.liner{border:1px solid var(--line);background:var(--bg);display:flex;flex-direction:column;min-width:0}
.liner img{width:100%;aspect-ratio:16/9;object-fit:cover}
.liner .body{padding:22px 24px 26px;display:grid;gap:8px}
.liner h3{font-size:24px;font-weight:900}
.thick{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);margin-top:22px}
.thick div{background:var(--bg);padding:14px 16px;font-size:13.5px;color:var(--muted);line-height:1.6}
.thick b{display:block;font:700 30px/1.1 var(--f-cond);color:var(--red);margin-bottom:4px}
.thick b::after{content:" mm";font-size:.5em;color:var(--muted);font-weight:600}
.thick div:last-child b::after{content:""}
.nda{margin-top:40px;border:1px solid var(--dark-line);padding:clamp(22px,3vw,32px);background:var(--graphite-2)}
.nda h3{font-size:19px;font-weight:900;margin-bottom:16px}
.nda ol{margin:0;padding:0;list-style:none;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px 20px;counter-reset:n}
.nda li{counter-increment:n;font-size:15px;padding:10px 0;border-top:1px solid var(--dark-line);display:flex;gap:12px;align-items:baseline}
.nda li::before{content:counter(n,decimal-leading-zero);font:700 13px var(--f-mono);color:#ff6075}
.nda li::after{content:"NDA";font:700 10px/1 var(--f-mono);letter-spacing:.08em;color:var(--on-dark-mute);border:1px solid var(--dark-line);padding:4px 6px;margin-left:auto}
@media (max-width:980px){.nda ol{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:520px){.nda ol{grid-template-columns:minmax(0,1fr)}}
.opts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.opt{border:1px solid var(--line);background:var(--bg);padding:24px;min-width:0}
.opt.hi{border-color:var(--red);box-shadow:inset 0 4px 0 var(--red)}
.opt .oh{display:flex;align-items:baseline;gap:12px;font-weight:700;font-size:17px;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:14px}
.opt .oh b{font:700 40px/1 var(--f-cond);color:var(--red)}
.opt ul{margin:0;padding-left:1.1em;display:grid;gap:8px;font-size:14.5px;color:var(--muted)}
@media (max-width:860px){.opts{grid-template-columns:minmax(0,1fr)}}
.shots{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.shots figure{margin:0;border:1px solid var(--line);background:var(--bg);min-width:0}
.shots img{width:100%;aspect-ratio:3/2;object-fit:cover;object-position:top;background:#fff}
.shots figcaption{font-size:13.5px;color:var(--muted);padding:12px 14px;border-top:1px solid var(--line)}
@media (max-width:860px){.shots{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:520px){.shots{grid-template-columns:minmax(0,1fr)}}
.pj-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.pj-grid figure{margin:0;min-width:0}
.pj-grid img{width:100%;aspect-ratio:4/3;object-fit:cover}
.pj-grid figure.big{grid-column:span 2;grid-row:span 2}
.pj-grid figure.big img{height:100%;aspect-ratio:auto}
.pj-grid figcaption{font-size:13px;color:var(--muted);margin-top:6px}
@media (max-width:860px){.pj-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.pj-grid figure.big{grid-column:1/-1;grid-row:auto}.pj-grid figure.big img{aspect-ratio:16/9}}
.biz{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:2px;background:var(--line)}
.biz a{text-decoration:none;color:inherit;background:var(--bg);display:grid;grid-template-rows:auto 1fr;min-width:0}
.biz .pic{aspect-ratio:16/10;overflow:hidden;background:var(--graphite)}
.biz .pic img{width:100%;height:100%;object-fit:cover;transition:transform .8s}
.biz a:hover .pic img{transform:scale(1.05)}
.biz .txt{padding:22px 24px 26px;display:grid;gap:8px;align-content:start}
.biz .code{font:700 12.5px var(--f-mono);letter-spacing:.08em;color:var(--red)}
.biz h3{font-size:22px;font-weight:900}
.biz p{font-size:14.5px;color:var(--muted)}
@media (max-width:860px){.biz{grid-template-columns:minmax(0,1fr)}}
.inq{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:2px;background:var(--line);border:1px solid var(--line);margin-bottom:32px}
.inq div{background:var(--bg);padding:22px 22px 24px;min-width:0}
.inq .code{font:700 12.5px var(--f-mono);letter-spacing:.08em;color:var(--red)}
.inq h3{font-size:18px;font-weight:900;margin:8px 0 8px}
.inq p{font-size:14px;color:var(--muted)}
.inq div.hl{background:var(--tint)}
@media (max-width:860px){.inq{grid-template-columns:minmax(0,1fr)}}

.hero h1{font-size:clamp(34px,5.6vw,76px)}

/* ---- Korean typography ---- */
html[lang="ko"]{--f-head:"Noto Sans KR","Pretendard","Malgun Gothic","Apple SD Gothic Neo",system-ui,sans-serif}
html[lang="ko"] body{word-break:keep-all;overflow-wrap:break-word;line-height:1.8}
html[lang="ko"] h1,html[lang="ko"] h2,html[lang="ko"] h3,html[lang="ko"] h4{word-break:keep-all;letter-spacing:-.02em}
html[lang="ko"] .hero h1{font-size:clamp(30px,5vw,68px);letter-spacing:-.03em;line-height:1.12}
html[lang="ko"] .hero h1 .ko{white-space:nowrap}
html[lang="ko"] .eyebrow{letter-spacing:.08em}
html[lang="ko"] .lead,html[lang="ko"] .hero p{line-height:1.75}
@media (max-width:640px){
  html[lang="ko"] .hero h1{font-size:clamp(26px,7.2vw,34px)}
  html[lang="ko"] .hero h1 .ko{white-space:normal}
}
.menu a{white-space:nowrap}
.cmp2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.cmp2 .card{background:var(--bg);border:1px solid var(--line);padding:28px}
.cmp2 .card .code{font:700 13px var(--f-mono);color:var(--red);letter-spacing:.08em}
.cmp2 .card h3{margin:6px 0 14px;font-size:22px}
@media (max-width:760px){.cmp2{grid-template-columns:1fr}}
.cmp2 .checklist li{grid-template-columns:14px minmax(0,1fr)}
.cmp2 .checklist li::before{width:8px;height:2px;border:0;background:var(--red);margin-top:13px}
.pfacts{list-style:none;margin:8px 0 0;padding:0;border-top:1px solid var(--line)}
.pfacts li{display:grid;grid-template-columns:5.5em minmax(0,1fr);gap:12px;padding:10px 0;border-bottom:1px solid var(--line);font-size:14.5px;line-height:1.6}
.pfacts b{font-weight:700;color:var(--red);font-size:13px;letter-spacing:.02em}
.wa-gal{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}
.wa-gal figure{margin:0;aspect-ratio:16/9;overflow:hidden;background:#000}
.wa-gal img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.wa-gal figure:hover img{transform:scale(1.04)}
.wa-gal figure:first-child{grid-column:span 2;grid-row:span 2}
@media (max-width:760px){.wa-gal{grid-template-columns:repeat(2,minmax(0,1fr))}}
.wa-prod{display:grid;grid-template-columns:1.6fr 1fr 1fr;grid-template-rows:auto auto;gap:12px}
.wa-prod figure{margin:0;display:flex;flex-direction:column}
.wa-prod img{width:100%;aspect-ratio:4/3;object-fit:cover;background:#fff;border:1px solid var(--line)}
.wa-prod figure.big{grid-row:span 2}
.wa-prod figure.big img{aspect-ratio:auto;height:100%;object-fit:contain;flex:1}
.wa-prod figcaption{font-size:13px;color:var(--muted);padding-top:6px}
.wa-prod.plate{grid-template-columns:1.6fr 1fr;grid-template-rows:auto auto}
@media (max-width:760px){.wa-prod,.wa-prod.plate{grid-template-columns:1fr 1fr}.wa-prod figure.big{grid-column:span 2;grid-row:auto}.wa-prod figure.big img{height:auto}}
.gal-h{font-size:18px;font-weight:700;margin:34px 0 14px;color:#fff;border-left:3px solid var(--red);padding-left:12px}
.wa-gal2{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.wa-gal2 figure{margin:0;background:#0b0d10;border:1px solid rgba(255,255,255,.08)}
.wa-gal2 img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block}
.wa-gal2 figcaption{padding:10px 12px 12px;display:grid;gap:4px}
.wa-gal2 figcaption b{font-weight:500;font-size:13.5px;line-height:1.5;color:#e9ecef}
.wa-gal2 figcaption small{font:500 11.5px var(--f-mono);color:#ff8597;letter-spacing:.04em}
@media (max-width:980px){.wa-gal2{grid-template-columns:repeat(2,minmax(0,1fr))}}
.small-tbl.fit{overflow:visible}
.small-tbl.fit table{min-width:0;table-layout:fixed}
.small-tbl.fit th:first-child{width:62%}
.small-tbl.fit td{white-space:nowrap}
.sub-h{font-size:20px;font-weight:700;border-left:3px solid var(--red);padding-left:12px}
.opts.four{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:980px){.opts.four{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.opts.four{grid-template-columns:1fr}}
.sheet.txt td{font-family:var(--f-head);font-size:14.5px;line-height:1.6}
.sheet.txt th{width:30%}
/* v4.6 — compact product grid, contact mail, tap targets */
.pgrid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}
.pcard{display:flex;flex-direction:column;text-decoration:none;color:var(--ink);background:var(--bg);border:1px solid var(--line);transition:border-color .2s,transform .2s}
.pcard:hover{border-color:var(--red);transform:translateY(-2px)}
.pcard .pv{aspect-ratio:4/3;display:grid;place-items:center;background:var(--bg-2);overflow:hidden;padding:12px}
.pcard .pv img{max-width:100%;max-height:100%;object-fit:contain}
.pcard .pt{padding:14px 16px 16px;display:grid;gap:6px;align-content:start}
.pcard .code{font:700 11px var(--f-mono);color:var(--red);letter-spacing:.06em}
.pcard h3{font-size:16px}
.pcard p{margin:0;font-size:13.5px;color:var(--muted);line-height:1.5}
.pcard .chip{justify-self:start;margin-top:4px}
@media (max-width:980px){.pgrid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media (max-width:640px){.pgrid{grid-template-columns:repeat(2,minmax(0,1fr))}.pcard .pt{padding:12px}}
.hero-mail{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:22px}
.hero-mail a{font:700 clamp(18px,2.4vw,26px) var(--f-mono);color:#fff;text-decoration:none;border-bottom:2px solid var(--red);padding-bottom:2px;word-break:break-all}
.lang button{padding:10px 12px;min-height:36px}
.ftr a{display:inline-block;padding:4px 0;min-height:28px}
.ftr ul{gap:4px}
.subnav a{padding:15px 16px}
.menu a{padding:10px 12px}
.hero h1 .tc,.hero h1 .ko{word-break:keep-all}