:root{
  --teal:#509080; --teal-d:#3a7264; --teal-l:#eaf3f0; --ink:#3b3b3b; --ink-2:#6b7570;
  --line:#e3e9e7; --bg:#ffffff; --bg-2:#f7f9f8; --font:"Helvetica Neue",Helvetica,Arial,"PingFang SC","Hiragino Kaku Gothic ProN","Yu Gothic","Microsoft YaHei","Malgun Gothic","Apple SD Gothic Neo","Noto Sans KR",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1160px;margin:0 auto;padding:0 28px}
.skip{position:absolute;left:-9999px;top:0;background:#fff;padding:10px;z-index:999}
.skip:focus{left:10px;top:10px}

/* header */
.hd{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:box-shadow .3s}
.hd.scrolled{box-shadow:0 4px 24px rgba(59,59,59,.08)}
.hd-in{display:flex;align-items:center;justify-content:space-between;height:74px}
.hd .logo{display:flex;align-items:center;gap:12px}
.hd .logo img{height:40px;width:auto}
.hd nav{display:flex;gap:30px;align-items:center}
.hd nav a{font-size:14.5px;color:var(--ink);letter-spacing:.02em;position:relative;padding:6px 0}
.hd nav a:hover,.hd nav a.on{color:var(--teal-d)}
.hd nav a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--teal);transition:right .25s ease}
.hd nav a:hover::after,.hd nav a.on::after{right:0}
.lang{position:relative}
.lang>button{display:flex;align-items:center;gap:7px;border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 14px;font-size:13px;cursor:pointer;color:var(--ink);font-family:var(--font)}
.lang>button .arr{font-size:9px;color:var(--teal-d)}
.lang-menu{position:absolute;right:0;top:calc(100% + 8px);background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 12px 32px rgba(59,59,59,.12);min-width:150px;padding:8px;display:none}
.lang.open .lang-menu{display:block}
.lang-menu a{display:block;padding:8px 14px;border-radius:8px;font-size:13.5px;color:var(--ink)}
.lang-menu a:hover{background:var(--teal-l);color:var(--teal-d)}
.lang-menu a.cur{color:var(--teal-d);font-weight:600}
.burger{display:none;border:none;background:none;cursor:pointer;padding:8px}
.burger span{display:block;width:22px;height:2px;background:var(--ink);margin:5px 0;transition:.3s}

/* hero */
.hero{position:relative;height:92vh;min-height:560px;display:flex;align-items:center;overflow:hidden;background:var(--ink)}
.hero-bg{position:absolute;inset:-12% 0;z-index:0;background-size:cover;background-position:center;will-change:transform}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(30,40,37,.38) 0%,rgba(30,40,37,.16) 45%,rgba(30,40,37,.45) 100%),linear-gradient(90deg,rgba(22,30,27,.55) 0%,rgba(22,30,27,.18) 60%,rgba(22,30,27,0) 100%);z-index:1}
.hero-in{position:relative;z-index:2;color:#fff;text-shadow:0 2px 20px rgba(18,24,22,.5)}
.hero .kicker{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.32em;text-transform:uppercase;color:#eaf3f0;margin-bottom:22px}
.hero .kicker::before{content:"";width:34px;height:1px;background:var(--teal)}
.hero h1{font-size:clamp(38px,6.4vw,72px);line-height:1.06;letter-spacing:.04em;font-weight:700}
.hero p{margin-top:20px;font-size:clamp(16px,2vw,21px);color:#f2f6f4;max-width:620px;font-weight:300}
.hero .ctas{display:flex;gap:16px;margin-top:38px;flex-wrap:wrap}
.btn{display:inline-block;padding:14px 32px;border-radius:3px;font-size:14.5px;letter-spacing:.08em;transition:.25s;border:1px solid transparent;cursor:pointer;font-family:var(--font)}
.btn-p{background:var(--teal);color:#fff}
.btn-p:hover{background:var(--teal-d);transform:translateY(-2px)}
.btn-g{border-color:rgba(255,255,255,.65);color:#fff;background:transparent}
.btn-g:hover{background:rgba(255,255,255,.14)}
.btn-d{border-color:var(--teal);color:var(--teal-d);background:transparent}
.btn-d:hover{background:var(--teal-l)}
.hero .scroll{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);z-index:2;color:#fff;font-size:11px;letter-spacing:.3em;text-transform:uppercase;opacity:.85}
.hero .kicker,.hero h1,.hero p,.hero .ctas{animation:rise 1s cubic-bezier(.2,.6,.2,1) both}
.hero h1{animation-delay:.15s}.hero p{animation-delay:.3s}.hero .ctas{animation-delay:.45s}
@keyframes rise{from{opacity:0;transform:translateY(28px)}to{opacity:1;transform:none}}
.hero .scroll::after{content:"";display:block;width:1px;height:36px;background:rgba(255,255,255,.7);margin:10px auto 0;animation:drip 2s infinite}
@keyframes drip{0%{transform:scaleY(0);transform-origin:top}55%{transform:scaleY(1);transform-origin:top}56%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* generic sections */
.sec{padding:96px 0}
.sec.tint{background:var(--bg-2)}
.kick{display:inline-flex;align-items:center;gap:10px;font-size:12.5px;letter-spacing:.3em;text-transform:uppercase;color:var(--teal-d);margin-bottom:14px}
.kick::before{content:"";width:30px;height:1px;background:var(--teal)}
h2.t{font-size:clamp(28px,3.6vw,42px);line-height:1.2;font-weight:700;letter-spacing:.01em}
.sub{color:var(--ink-2);margin-top:14px;max-width:640px;font-size:16.5px}
.center{text-align:center}
.center .sub{margin-left:auto;margin-right:auto}
.center .kick{justify-content:center}

/* intro */
.intro{display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:center}
.intro .big{font-size:clamp(22px,2.6vw,30px);line-height:1.5;font-weight:300}
.intro .big b{color:var(--teal-d);font-weight:600}
.intro .side{border-left:3px solid var(--teal);padding-left:26px;color:var(--ink-2);font-size:15px}

/* numbers */
.nums{background:var(--ink);color:#fff;position:relative;overflow:hidden}
.nums .px-bg{position:absolute;inset:-18% 0;background:var(--ink) url("") center/cover;opacity:.18;will-change:transform}
.nums .grid{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center;padding:84px 0}
.nums .n{font-size:clamp(38px,4.6vw,56px);font-weight:700;color:#fff}
.nums .n em{font-style:normal;color:var(--teal)}
.nums .l{font-size:13.5px;color:#c9d4d0;letter-spacing:.06em;margin-top:6px}

/* category cards */
.cats{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:56px}
.cat{position:relative;border-radius:6px;overflow:hidden;aspect-ratio:3/3.6;display:flex;align-items:flex-end;background:var(--ink)}
.cat img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .7s cubic-bezier(.2,.6,.2,1)}
.cat:hover img{transform:scale(1.07)}
.cat::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 35%,rgba(25,35,31,.78))}
.cat .c{position:relative;z-index:1;padding:24px;color:#fff}
.cat .c h3{font-size:20px;letter-spacing:.03em}
.cat .c p{font-size:13.5px;color:#dbe5e1;margin-top:8px;line-height:1.55}
.cat .c .more{display:inline-block;margin-top:12px;font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:#9fd0c3;border-bottom:1px solid rgba(159,208,195,.5);padding-bottom:3px}

/* featured products */
.feat{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:56px}
.pcard{background:#fff;border:1px solid var(--line);border-radius:6px;overflow:hidden;transition:.3s;display:flex;flex-direction:column}
.pcard:hover{box-shadow:0 18px 44px rgba(59,59,59,.1);transform:translateY(-4px);border-color:#cfe0da}
.pcard .im{aspect-ratio:4/3.1;overflow:hidden;background:var(--bg-2);position:relative}
.pcard .im img{width:100%;height:100%;object-fit:cover;transition:transform .7s}
.pcard:hover .im img{transform:scale(1.06)}
.pcard .im .tag{position:absolute;top:12px;left:12px;background:rgba(80,144,128,.92);color:#fff;font-size:11.5px;letter-spacing:.1em;padding:4px 10px;border-radius:3px;text-transform:uppercase}
.pcard .b{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.pcard .b h3{font-size:19px;letter-spacing:.05em}
.pcard .b .s{color:var(--ink-2);font-size:14px;margin-top:6px;flex:1}
.pcard .b .go{margin-top:16px;font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--teal-d);display:inline-flex;align-items:center;gap:8px}
.pcard .b .go::after{content:"→";transition:transform .25s}
.pcard:hover .go::after{transform:translateX(4px)}
.viewall{margin-top:44px;text-align:center}

/* tech / parallax band */
.band-px{position:relative;background:var(--ink);color:#fff;overflow:hidden}
.band-px .px-bg{position:absolute;inset:-15% 0;background-size:cover;background-position:center;opacity:.24;will-change:transform}
.band-px .inner{position:relative;padding:110px 0;display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.band-px h2{color:#fff}
.band-px .sub{color:#c9d4d0}
.tlist{display:grid;gap:18px}
.titem{display:flex;gap:16px;align-items:flex-start;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:6px;padding:18px 20px;backdrop-filter:blur(4px)}
.titem .ico{width:38px;height:38px;flex:none;border-radius:50%;background:var(--teal);color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px}
.titem .tt{font-size:15.5px;letter-spacing:.02em}

/* cert strip */
.certs-strip{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:44px}
.cbadge{border:1px solid var(--line);background:#fff;border-radius:4px;padding:14px 26px;text-align:center;min-width:150px}
.cbadge .a{font-weight:700;font-size:16px;color:var(--teal-d);letter-spacing:.04em}
.cbadge .b2{font-size:12px;color:var(--ink-2);margin-top:3px;letter-spacing:.05em}

/* video teaser */
.vt{position:relative;border-radius:8px;overflow:hidden;aspect-ratio:21/9;background:var(--ink);display:flex;align-items:center;justify-content:center;margin-top:56px}
.vt img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.55;transition:transform 1s}
.vt:hover img{transform:scale(1.04)}
.vt .play{position:relative;z-index:1;width:88px;height:88px;border-radius:50%;background:rgba(80,144,128,.92);display:flex;align-items:center;justify-content:center;transition:.3s;border:2px solid rgba(255,255,255,.4)}
.vt:hover .play{transform:scale(1.08);background:var(--teal)}
.vt .play::after{content:"";display:block;border-left:20px solid #fff;border-top:12px solid transparent;border-bottom:12px solid transparent;margin-left:5px}
.vt .cap{position:absolute;z-index:1;bottom:26px;left:30px;color:#fff}
.vt .cap .k{font-size:11.5px;letter-spacing:.28em;text-transform:uppercase;color:#9fd0c3}
.vt .cap h3{font-size:clamp(20px,2.6vw,30px);margin-top:6px}

/* cta band */
.cta-band{background:var(--teal-l);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cta-band .in{display:flex;align-items:center;justify-content:space-between;gap:36px;padding:66px 0;flex-wrap:wrap}
.cta-band h2{font-size:clamp(24px,3vw,34px)}
.cta-band p{color:var(--ink-2);margin-top:10px;max-width:560px}

/* page hero (inner pages) */
.phero{position:relative;height:46vh;min-height:300px;display:flex;align-items:flex-end;background:var(--ink);overflow:hidden}
.phero .px-bg{position:absolute;inset:-14% 0;background-size:cover;background-position:center;will-change:transform}
.phero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(30,40,37,.3),rgba(30,40,37,.62))}
.phero .in{position:relative;z-index:1;color:#fff;padding-bottom:52px}
.phero h1{font-size:clamp(30px,4.4vw,50px);letter-spacing:.02em}
.phero .crumb{font-size:12.5px;letter-spacing:.18em;text-transform:uppercase;color:#9fd0c3;margin-bottom:12px}

/* about */
.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:60px;margin-top:24px}
.about-grid .txt p{margin-bottom:18px;color:#4a524e;font-size:16.5px}
.values{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:56px}
.vcard{background:#fff;border:1px solid var(--line);border-radius:6px;padding:30px;transition:.3s}
.vcard:hover{border-color:#cfe0da;box-shadow:0 14px 36px rgba(59,59,59,.07)}
.vcard .no{font-size:13px;color:var(--teal);letter-spacing:.2em}
.vcard h3{font-size:19px;margin-top:10px}
.vcard p{color:var(--ink-2);font-size:14.5px;margin-top:8px}
.honors{display:flex;flex-wrap:wrap;gap:14px;margin-top:40px}
.honor{background:var(--teal-l);border:1px solid #cfe0da;color:var(--teal-d);border-radius:999px;padding:10px 24px;font-size:14px}
.markets{margin-top:56px;padding:44px;border:1px solid var(--line);border-radius:8px;background:#fff;display:flex;flex-wrap:wrap;gap:18px 40px;align-items:center;justify-content:center}
.markets .mk{display:flex;align-items:center;gap:10px;font-size:16px;color:var(--ink)}
.markets .mk::before{content:"";width:8px;height:8px;background:var(--teal);border-radius:2px;transform:rotate(45deg)}

/* products page */
.filter{display:flex;gap:12px;flex-wrap:wrap;margin:44px 0 10px}
.fbtn{border:1px solid var(--line);background:#fff;border-radius:999px;padding:9px 22px;font-size:14px;cursor:pointer;color:var(--ink);font-family:var(--font);transition:.25s}
.fbtn:hover{border-color:var(--teal);color:var(--teal-d)}
.fbtn.on{background:var(--teal);border-color:var(--teal);color:#fff}
.catsec{margin-top:64px}
.catsec .ch{display:flex;align-items:baseline;gap:18px;flex-wrap:wrap}
.catsec .ch h2{font-size:26px}
.catsec .ch p{color:var(--ink-2);font-size:14.5px}
.pgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:30px}

/* product detail */
.pd-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start;margin-top:64px}
.pd-im{position:relative;border-radius:8px;overflow:hidden;background:var(--bg-2);border:1px solid var(--line)}
.pd-im img{width:100%;aspect-ratio:4/3.4;object-fit:cover}
.pd-info .cat-l{font-size:12.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--teal-d)}
.pd-info h1{font-size:clamp(34px,4.4vw,52px);letter-spacing:.04em;margin-top:10px}
.pd-info .sub-t{font-size:19px;color:var(--ink-2);margin-top:12px;font-weight:300}
.pd-info .desc{margin-top:26px;color:#4a524e;font-size:15.5px}
.feats{margin-top:30px;display:grid;gap:12px}
.feats li{list-style:none;display:flex;gap:12px;align-items:flex-start;font-size:15px;color:#4a524e}
.feats li::before{content:"";width:7px;height:7px;background:var(--teal);border-radius:2px;transform:rotate(45deg);flex:none;margin-top:9px}
.pd-cta{margin-top:36px;display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.pd-note{margin-top:16px;font-size:13px;color:var(--ink-2)}
.pd-nav{margin-top:70px;border-top:1px solid var(--line);padding-top:28px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px}
.pd-nav a{color:var(--teal-d);font-size:14px;letter-spacing:.04em}
.pd-others{margin-top:70px}
.pd-others .pgrid{grid-template-columns:repeat(4,1fr)}

/* quality */
.qgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:56px}
.qcard{background:#fff;border:1px solid var(--line);border-radius:8px;padding:34px;transition:.3s}
.qcard:hover{box-shadow:0 16px 40px rgba(59,59,59,.08);border-color:#cfe0da}
.qcard .ic{width:46px;height:46px;border-radius:8px;background:var(--teal-l);color:var(--teal-d);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:17px}
.qcard h3{font-size:20px;margin-top:18px}
.qcard p{color:var(--ink-2);font-size:14.5px;margin-top:10px}
.certwall{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;margin-top:44px}
.certcell{border:1px solid var(--line);border-radius:6px;overflow:hidden;background:#fff;transition:.25s;display:block}
.certcell:hover{box-shadow:0 10px 28px rgba(59,59,59,.1);transform:translateY(-3px)}
.certcell img{width:100%;aspect-ratio:1/1.35;object-fit:cover;background:#f2f5f4}
.dl-row{margin-top:44px;text-align:center}

/* videos */
.vmain{margin-top:56px;background:#000;border-radius:8px;overflow:hidden;box-shadow:0 24px 60px rgba(59,59,59,.18)}
.vmain video{width:100%;display:block;aspect-ratio:16/9;background:#000}
.vcap{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;margin-top:18px}
.vcap h3{font-size:20px}
.vcap p{color:var(--ink-2);font-size:14px}

/* jobs */
.jobs-hero{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center;margin-top:56px}
.jobs-card{background:#fff;border:1px solid var(--line);border-left:4px solid var(--teal);border-radius:6px;padding:34px}
.jobs-card h3{font-size:19px}
.jobs-card .mail{font-size:22px;color:var(--teal-d);margin-top:14px;font-weight:600}
.jobs-card p{color:var(--ink-2);font-size:14px;margin-top:8px}

/* contact */
.cgrid{display:grid;grid-template-columns:1fr 1fr;gap:60px;margin-top:56px}
.clist{display:grid;gap:8px}
.citem{display:flex;gap:18px;padding:20px 0;border-bottom:1px solid var(--line);align-items:flex-start}
.citem .lb{width:130px;flex:none;font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--teal-d);padding-top:3px}
.citem .vl{font-size:15.5px;color:#4a524e}
.citem a.vl:hover{color:var(--teal-d)}
.form{background:#fff;border:1px solid var(--line);border-radius:8px;padding:34px}
.form h3{font-size:20px;margin-bottom:22px}
.form label{display:block;font-size:13px;letter-spacing:.06em;color:var(--ink-2);margin:16px 0 7px}
.form input,.form textarea{width:100%;border:1px solid var(--line);border-radius:5px;padding:13px 15px;font-size:15px;font-family:var(--font);transition:.25s;background:var(--bg-2)}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--teal);background:#fff}
.form textarea{min-height:120px;resize:vertical}
.form .note{font-size:12.5px;color:var(--ink-2);margin-top:12px}
.form button{margin-top:22px}

/* footer */
.ft{background:#2f3734;color:#b9c4c0;margin-top:0}
.ft .top{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:44px;padding:70px 0 50px}
.ft img{height:34px;filter:brightness(1.06)}
.ft .tag{font-size:14px;margin-top:18px;max-width:280px;color:#96a3a0}
.ft h4{color:#fff;font-size:13.5px;letter-spacing:.18em;text-transform:uppercase;margin-bottom:18px;font-weight:600}
.ft ul{list-style:none;display:grid;gap:10px}
.ft ul a{font-size:14px;color:#b9c4c0}
.ft ul a:hover{color:#fff}
.ft .bot{border-top:1px solid #3d4744;padding:22px 0;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12.5px;color:#8b9894}

/* reveal animation */
.rv{opacity:0;transform:translateY(34px);transition:opacity .8s cubic-bezier(.2,.6,.2,1),transform .8s cubic-bezier(.2,.6,.2,1)}
.rv.in{opacity:1;transform:none}
.rv[data-d="1"]{transition-delay:.12s}.rv[data-d="2"]{transition-delay:.24s}.rv[data-d="3"]{transition-delay:.36s}.rv[data-d="4"]{transition-delay:.48s}

/* responsive */
@media(max-width:1000px){
  .intro,.about-grid,.pd-grid,.cgrid,.jobs-hero,.band-px .inner{grid-template-columns:1fr;gap:40px}
  .cats,.pgrid{grid-template-columns:repeat(2,1fr)}
  .feat{grid-template-columns:repeat(2,1fr)}
  .certwall{grid-template-columns:repeat(4,1fr)}
  .qgrid,.values{grid-template-columns:1fr}
  .nums .grid{grid-template-columns:repeat(2,1fr)}
  .ft .top{grid-template-columns:1fr 1fr;gap:36px}
}
@media(max-width:720px){
  .hd nav{display:none;position:absolute;top:74px;left:0;right:0;background:#fff;flex-direction:column;gap:0;padding:10px 24px 20px;border-bottom:1px solid var(--line);align-items:flex-start}
  .hd nav.open{display:flex}
  .hd nav a{padding:12px 0;width:100%}
  .burger{display:block}
  .hero{height:78vh}
  .feat,.pgrid,.cats{grid-template-columns:1fr}
  .certwall{grid-template-columns:repeat(2,1fr)}
  .sec{padding:64px 0}
  .pd-others .pgrid{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .hero .kicker,.hero h1,.hero p,.hero .ctas{animation:none}
}