:root{--ink:#18212d;--muted:#5d6876;--line:#dde3ea;--bg:#f4f6f9;--navy:#12304f;--navy2:#0b2038;--red:#c8102e;--red2:#a50d26;--blue:#1d5fa8;--r:10px;
--font:"Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei","Noto Sans SC","Noto Sans Thai","Leelawadee UI","Malgun Gothic","Noto Sans KR",sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--font);color:var(--ink);background:#fff;line-height:1.6;font-size:16px}
img{max-width:100%;height:auto;display:block}a{color:var(--blue)}h1,h2,h3{line-height:1.25;color:var(--navy2)}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}.muted{color:var(--muted)}.small{font-size:.85rem}
.skip{position:absolute;left:-9999px}.skip:focus{left:10px;top:10px;background:#fff;padding:8px;z-index:99}
.btn{display:inline-block;background:var(--red);color:#fff;border:0;border-radius:6px;padding:12px 24px;font:inherit;font-weight:650;text-decoration:none;cursor:pointer;transition:background .15s}
.btn:hover{background:var(--red2)}.btn-sm{padding:8px 16px;font-size:.92rem}.btn-ghost{background:transparent;color:var(--navy);box-shadow:inset 0 0 0 2px currentColor}.btn-ghost:hover{background:rgba(18,48,79,.08)}
.btn-light{background:#fff;color:var(--red)}.btn-light:hover{background:#f1f1f1}.btn:disabled{opacity:.6}
/* header */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 2px 10px rgba(0,0,0,.04)}
.hbar{display:flex;align-items:center;gap:20px;min-height:72px}.logo img{width:190px;height:auto}
.mainnav{flex:1}.mainnav ul{display:flex;gap:4px;list-style:none;margin:0;padding:0;justify-content:center;flex-wrap:wrap}
.mainnav a{display:block;padding:8px 12px;color:var(--ink);text-decoration:none;font-weight:550;border-radius:6px}
.mainnav a:hover,.mainnav a[aria-current=page]{color:var(--red);background:#fbeef0}
.hright{display:flex;align-items:center;gap:12px}
.langsw{position:relative}.langsw summary{cursor:pointer;list-style:none;padding:7px 10px;border:1px solid var(--line);border-radius:6px;font-size:.9rem;white-space:nowrap}
.langsw summary::-webkit-details-marker{display:none}.langsw ul{position:absolute;right:0;top:110%;background:#fff;border:1px solid var(--line);border-radius:8px;list-style:none;margin:0;padding:6px;min-width:150px;box-shadow:0 8px 24px rgba(0,0,0,.12)}
.langsw a{display:block;padding:7px 10px;color:var(--ink);text-decoration:none;border-radius:5px}.langsw a:hover,.langsw a[aria-current=true]{background:var(--bg);color:var(--red)}
.navtoggle{display:none;background:none;border:0;padding:8px;cursor:pointer}.navtoggle span{display:block;width:24px;height:2px;background:var(--navy);margin:5px 0}
.mtbar{background:#fff7e0;color:#6b5200;text-align:center;font-size:.85rem;padding:6px 12px}
/* hero */
.hero{position:relative;min-height:540px;display:flex;align-items:center;color:#fff;overflow:hidden;background:var(--navy2)}
.hero picture,.hero picture img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(9,25,45,.92) 0%,rgba(9,25,45,.72) 50%,rgba(9,25,45,.25) 100%)}
.herotxt{position:relative;z-index:1;padding-top:60px;padding-bottom:60px}.herotxt h1{color:#fff;font-size:clamp(1.8rem,4vw,3rem);max-width:780px;margin:.2em 0}
.herotxt .lede{max-width:640px;font-size:1.12rem;color:#dfe7f0}.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:.8rem;color:#ffb3bf;font-weight:700}
.hero .btn-ghost{color:#fff}.cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
/* sections */
.sec{padding:56px 20px}.sec.wrap{padding-left:20px;padding-right:20px}.alt{background:var(--bg)}
.sec h2{font-size:1.7rem;margin:0 0 24px}.sechead{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap}
.sechead a{font-weight:600;text-decoration:none}
.phead{padding:24px 20px 8px}.phead h1{font-size:2rem;margin:0 0 8px}.lede{font-size:1.06rem;color:var(--muted)}
.cgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:18px}
.pgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:18px}
.pcard,.ccard{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;text-decoration:none;color:var(--ink);transition:box-shadow .15s,transform .15s}
.pcard:hover,.ccard:hover{box-shadow:0 10px 28px rgba(18,48,79,.14);transform:translateY(-2px)}
.pimg{aspect-ratio:4/4.2;background:#fff;display:flex;align-items:center;justify-content:center;overflow:hidden;border-bottom:1px solid var(--line)}
.pimg picture,.pimg img{width:100%;height:100%;object-fit:contain}
.pbody{padding:12px 14px 16px}.pbody h3{font-size:1rem;margin:4px 0 0;color:var(--navy2)}.pbody p{margin:4px 0 0;font-size:.88rem}
.tag{display:inline-block;background:var(--navy);color:#fff;font-size:.75rem;font-weight:700;padding:2px 8px;border-radius:4px;letter-spacing:.03em}
.ph{width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;color:#9aa6b4;background:repeating-linear-gradient(45deg,#f6f8fa,#f6f8fa 10px,#eef1f5 10px,#eef1f5 20px);text-align:center;padding:12px;font-size:.85rem}
.ph svg{width:56px;height:56px}
.advgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.adv{background:#fff;border:1px solid var(--line);border-top:4px solid var(--red);border-radius:var(--r);padding:20px}.adv h3{margin:6px 0}.adv p{margin:0;color:var(--muted)}
.advn{font-weight:800;color:var(--red);font-size:1.3rem}
.apps{margin-top:28px}.chips{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:8px 0}
.chips li{background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-size:.92rem}.chips a{text-decoration:none;color:var(--navy)}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px;list-style:none;padding:0;margin:0;counter-reset:s}
.steps li{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:16px 12px;text-align:center;font-weight:600}
.steps span{display:flex;width:36px;height:36px;margin:0 auto 8px;border-radius:50%;background:var(--navy);color:#fff;align-items:center;justify-content:center}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.gallery figure{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.gallery picture,.gallery img{width:100%;aspect-ratio:4/3;object-fit:cover}
#certs .gallery img{object-fit:contain;aspect-ratio:3/4;background:#fff}
.gallery figcaption{padding:8px 12px;font-size:.88rem;color:var(--muted)}
.band{background:linear-gradient(90deg,var(--navy2),var(--navy));color:#fff}.bandin{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:32px 20px;flex-wrap:wrap}
.bandin p{margin:0;font-size:1.2rem;font-weight:600}
/* crumbs */
.crumbs ol{display:flex;flex-wrap:wrap;gap:6px;list-style:none;padding:14px 0 0;margin:0;font-size:.88rem;color:var(--muted)}
.crumbs li+li::before{content:"›";margin-right:6px}.crumbs a{color:var(--muted);text-decoration:none}
/* category layout */
.withside{display:grid;grid-template-columns:250px 1fr;gap:28px;padding-top:12px;padding-bottom:48px}
.side h2{font-size:1rem;margin:24px 0 8px}.side ul{list-style:none;padding:0;margin:0;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.side a{display:block;padding:10px 14px;border-bottom:1px solid var(--line);text-decoration:none;color:var(--ink);font-size:.93rem}.side li:last-child a{border:0}
.side a[aria-current=page],.side a:hover{background:#fbeef0;color:var(--red)}
.withside .phead{padding:24px 0 12px}
/* product detail */
.pdetail{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:36px;padding:20px 0 12px}
.pmain{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;background:#fff}
.pmain a,.pmain picture{width:100%;height:100%;display:flex;align-items:center;justify-content:center}.pmain img{max-height:100%;width:auto;object-fit:contain}
.pthumbs{display:flex;gap:10px;margin-top:10px}.pthumbs a{width:90px;border:1px solid var(--line);border-radius:6px;overflow:hidden}
.pinfo h1{font-size:1.9rem;margin:0 0 4px}
.kv{border-collapse:collapse;margin:16px 0;width:100%}.kv th,.kv td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--line)}.kv th{width:34%;color:var(--muted);font-weight:600}
.specs{padding:24px 0}.specs h2{font-size:1.5rem}
.spec-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:20px}.spec-wide{grid-column:1/-1}
.spec h3{font-size:1.05rem;background:var(--navy);color:#fff;margin:0;padding:10px 14px;border-radius:8px 8px 0 0}
.spec table{width:100%;border-collapse:collapse;font-size:.92rem;border:1px solid var(--line)}
.spec th,.spec td{padding:8px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}.spec tbody tr:nth-child(even),.spec>table tr:nth-child(even){background:#f8fafc}
.spec th[scope=row]{color:#344152;font-weight:600;width:48%}.spec thead th{background:#eef2f7}.scroll{overflow-x:auto}
/* about */
.about{display:grid;grid-template-columns:1.2fr 1fr;gap:36px;align-items:center;padding-top:20px;padding-bottom:40px}.about h1{font-size:2rem}
.about img{border-radius:var(--r)}.motto{font-size:1.2rem;color:var(--red);font-weight:700}
.ticks{list-style:none;padding:0}.ticks li{padding:6px 0 6px 28px;position:relative}.ticks li::before{content:"✓";position:absolute;left:0;color:var(--red);font-weight:800}
.logos{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;list-style:none;padding:0}
.logos li{border:1px solid var(--line);border-radius:8px;padding:8px;background:#fff}
/* news */
.news{list-style:none;padding:0;margin:0 0 48px}.nitem{display:grid;grid-template-columns:150px 1fr;gap:20px;padding:20px 0;border-bottom:1px solid var(--line)}
.nitem h2{font-size:1.15rem;margin:4px 0}.nitem time{color:var(--red);font-weight:700;font-size:.88rem}.nitem p{margin:4px 0}
.nthumb img{border-radius:8px;aspect-ratio:4/3;object-fit:cover;width:150px}.nthumb-ph{width:150px;aspect-ratio:4/3;border-radius:8px;background:var(--bg);display:flex;align-items:center;justify-content:center;color:#9aa6b4;font-weight:700}
/* contact */
.contact{display:grid;grid-template-columns:minmax(260px,380px) 1fr;gap:36px;padding-top:20px;padding-bottom:56px;align-items:start}
.cinfo dl{margin:16px 0}.cinfo dt{font-weight:700;color:var(--muted);font-size:.85rem;text-transform:uppercase;letter-spacing:.04em;margin-top:12px}.cinfo dd{margin:2px 0 0;font-size:1.05rem}
.fco{font-weight:700;color:var(--navy2)}.qrbox{display:inline-block;border:1px solid var(--line);border-radius:var(--r);padding:12px;text-align:center}.qrbox p{margin:6px 0 0;font-size:.9rem}
.rfq{background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:24px}.rfq>h2{margin-top:0}
.rfq h2{font-size:1.1rem;color:var(--navy);border-bottom:1px solid var(--line);padding-bottom:8px;margin:18px 0 14px}.rfq>h2{font-size:1.5rem;border:0}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:14px 18px;margin-bottom:12px}.field{display:flex;flex-direction:column;gap:6px}.field-span,.consent{grid-column:1/-1}
.rfq label{font-weight:600;font-size:.92rem}.rfq label em{color:var(--red);font-style:normal}
.rfq input[type=text],.rfq input[type=email],.rfq input[type=tel],.rfq input[type=search],.rfq select,.rfq textarea{width:100%;padding:10px;border:1px solid #c9d2dc;border-radius:6px;font:inherit;background:#fff}
.rfq input:focus,.rfq select:focus,.rfq textarea:focus{outline:2px solid #9cc3ea;border-color:var(--blue)}
.hint{margin:0;color:var(--muted);font-size:.85rem}.err{margin:0;color:var(--red);font-size:.82rem}.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:var(--red)}
.check{display:flex;gap:8px;align-items:flex-start;font-weight:500!important}.check input{margin-top:5px}
.hp{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}.hidden{display:none!important}
.file-list{list-style:none;margin:8px 0 0;padding:0}.file-list li{display:flex;justify-content:space-between;padding:6px 0;border-bottom:1px solid var(--line);font-size:.9rem}.file-list button{background:none;border:0;color:var(--blue);cursor:pointer}
.form-error{color:var(--red)}.card.success{background:#ecf8f0;border:1px solid #b9e3c7;border-radius:var(--r);padding:20px}.success h2{color:#0f6b3c;border:0}
.note{font-size:.85rem;color:var(--muted)}
/* footer */
.site-footer{background:var(--navy2);color:#c9d4e0;margin-top:0}.site-footer a{color:#fff}
.fgrid{display:grid;grid-template-columns:1.2fr 2fr auto;gap:28px;padding:40px 20px}.site-footer .fco{color:#fff;font-size:1.05rem;margin:0 0 4px}.site-footer .muted{color:#9fb0c3;margin:0}
.site-footer address{font-style:normal}.site-footer address p{margin:0 0 6px}.site-footer address span{color:#9fb0c3}
.fqr{text-align:center}.fqr img{background:#fff;padding:6px;border-radius:6px;width:120px}.fqr p{margin:6px 0 0;font-size:.82rem}
.fbottom{border-top:1px solid rgba(255,255,255,.1);padding:14px 20px;font-size:.85rem;color:#9fb0c3}
/* lightbox */
.lbx{position:fixed;inset:0;background:rgba(0,0,0,.88);display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:100;padding:20px;cursor:zoom-out}
.lbx img{max-width:95vw;max-height:85vh;object-fit:contain}.lbx p{color:#fff;margin-top:10px}
@media (max-width:980px){
 .navtoggle{display:block;margin-left:auto}.mainnav{position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);display:none}
 .mainnav.open{display:block}.mainnav ul{flex-direction:column;padding:8px 12px}.hright .btn{display:none}
 .withside{grid-template-columns:1fr}.side{order:2}.pdetail,.about,.contact{grid-template-columns:1fr}.fgrid{grid-template-columns:1fr}
}
@media (max-width:600px){.hero{min-height:460px}.grid{grid-template-columns:1fr}.pgrid,.cgrid{grid-template-columns:repeat(2,1fr);gap:10px}
 .gallery{grid-template-columns:repeat(2,1fr);gap:8px}.nitem{grid-template-columns:90px 1fr;gap:12px}.nthumb img,.nthumb-ph{width:90px}.logo img{width:150px}.sec{padding:40px 16px}.spec-grid{grid-template-columns:1fr}}
/* technical articles */
.tart{max-width:860px;padding-bottom:40px}.thead h1{font-size:clamp(1.5rem,3.2vw,2.1rem);margin:.3em 0}
.tdark{color:var(--red);font-weight:650;font-size:.9rem;text-transform:none;margin:0}
.tmeta{color:var(--muted);font-size:.9rem;margin:.2em 0 1em}
.tsum{background:var(--bg);border-left:4px solid var(--red);border-radius:var(--r);padding:14px 20px;margin:20px 0}
.tsum h2,.ttoc h2{font-size:1.05rem;margin:.2em 0 .5em}.tsum ul{margin:0;padding-left:1.2em}
.ttoc{border:1px solid var(--line);border-radius:var(--r);padding:14px 20px;margin:20px 0}.ttoc ol{margin:0;padding-left:0;list-style:none;columns:2;column-gap:28px}
.ttoc li{break-inside:avoid;margin:2px 0}@media(max-width:700px){.ttoc ol{columns:1}}
.tbody h2{margin-top:2em;padding-top:.4em;border-top:1px solid var(--line);font-size:1.4rem;scroll-margin-top:90px}
.tbody h3{font-size:1.1rem;margin-top:1.4em}.tbody p,.tbody li{line-height:1.75}
.tfig{margin:22px 0}.tfig img{border:1px solid var(--line);border-radius:8px;width:100%}.tfig-photo img{max-width:560px;margin:0 auto}
.tfig figcaption{font-size:.88rem;color:var(--muted);margin-top:8px;text-align:center}
.ttable{border-collapse:collapse;width:100%;font-size:.92rem;margin:12px 0}.ttable caption{text-align:left;font-weight:650;color:var(--navy2);padding:6px 0}
.ttable th,.ttable td{border:1px solid var(--line);padding:8px 10px;vertical-align:top;text-align:left}.ttable thead th{background:var(--navy);color:#fff}
.ttable tbody th{background:var(--bg);font-weight:600}
.tspec{margin:14px 0}.tspec h3{margin:.2em 0 .4em}.tspec table{width:100%}
.specv{font-weight:650;color:var(--navy2);white-space:normal}
sup.cite{font-size:.72em;margin-left:1px}sup.cite a{text-decoration:none}
.faqi{border-bottom:1px solid var(--line);padding:4px 0 8px}.faqi h3{margin:.8em 0 .3em}
.refs{padding-left:0;list-style:none;font-size:.88rem;word-break:break-word}.refs li{margin:6px 0;scroll-margin-top:90px}.refs-s{font-size:.9rem}
.tart .cta{margin:28px 0;text-align:center}
.tlist{list-style:none;padding:0;margin:20px 0 40px;display:grid;gap:24px}
.titem{display:grid;grid-template-columns:360px 1fr;gap:24px;align-items:start;border:1px solid var(--line);border-radius:var(--r);padding:16px}
.titem h2{font-size:1.25rem;margin:.2em 0}.titem h2 a{color:var(--navy2);text-decoration:none}.tthumb img{border-radius:6px}
@media(max-width:760px){.titem{grid-template-columns:1fr}}
.techbox{background:var(--bg);border-radius:var(--r);padding:14px 20px;margin:26px 0}.techbox h2{font-size:1.05rem;margin:.2em 0 .4em}.techbox ul{margin:0;padding-left:1.2em}
.tspec h3 a{color:#fff;text-decoration:underline}
.nthumb{display:block}.nitem h2 a{color:inherit;text-decoration:none}.nitem h2 a:hover{color:var(--red);text-decoration:underline}
.nart .tfig{margin:8px 0 24px}.nsrc{border-top:1px solid var(--line);padding-top:12px;margin-top:28px}
.catdef{background:var(--bg);border-left:4px solid var(--red);padding:14px 18px;border-radius:8px;margin:0 0 22px}.catdef h2{font-size:1.1rem;margin:0 0 6px}.catdef p{margin:0}
h2.mh{font-size:1.15rem;margin:8px 0 14px}
@media (min-width:981px) and (max-width:1320px){.hbar{gap:12px}.logo img{width:160px}.mainnav ul{gap:0;flex-wrap:nowrap}.mainnav a{padding:8px 8px;font-size:.92rem;white-space:nowrap}}
.hright .btn{white-space:nowrap}@media (min-width:981px) and (max-width:1120px){.hright .btn{display:none}}
.partner{border-left:4px solid #2a6fdb}.partner .pcols{display:grid;grid-template-columns:1fr 1fr;gap:8px 24px}.partner h3{font-size:1rem;margin:6px 0 4px}.partner ul{margin:0 0 6px;padding-left:18px}
a.ext::after{content:" ↗";font-size:.85em}@media (max-width:700px){.partner .pcols{grid-template-columns:1fr}}