:root{--ink:#111411;--charcoal:#171a18;--deep:#0b0e0c;--paper:#f2f2ed;--white:#fff;--silver:#d7d9d4;--muted:#8d938e;--green:#43b764;--acid:#65cf77;--line:rgba(17,20,17,.16);--light-line:rgba(255,255,255,.16);--shell:min(1240px,calc(100% - 64px))}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,"Noto Sans KR","Apple SD Gothic Neo",sans-serif;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button{font:inherit}
img{max-width:100%;height:auto}
h1,h2,h3,p{margin-top:0}
.shell{width:var(--shell);margin-inline:auto}
.skip-link{position:fixed;left:16px;top:-100px;z-index:1000;padding:12px 16px;background:#fff;color:#111}
.skip-link:focus{top:16px}
.site-header{position:fixed;inset:0 0 auto;z-index:100;height:86px;color:#fff;transition:.35s ease;border-bottom:1px solid transparent}
.site-header.scrolled{height:72px;background:rgba(12,15,13,.93);backdrop-filter:blur(18px);border-color:var(--light-line)}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between}
.wordmark{display:flex;align-items:center;gap:11px;font-size:21px;font-weight:900;letter-spacing:.15em;line-height:1}
.wordmark-symbol{display:grid;place-items:center;width:31px;height:31px;border:2px solid var(--green);border-radius:50% 50% 50% 14%;color:var(--green);font-size:16px;letter-spacing:0;transform:rotate(-5deg)}
.main-nav{display:flex;align-items:center;gap:34px;font-size:13px;font-weight:700;letter-spacing:.02em}
.main-nav a{position:relative}
.main-nav a:not(.nav-cta):after{content:"";position:absolute;left:0;right:100%;bottom:-7px;height:1px;background:var(--acid);transition:.25s}
.main-nav a:hover:after,.main-nav a:focus-visible:after{right:0}
.nav-cta{padding:10px 17px;border:1px solid rgba(255,255,255,.55)}
.menu-button{display:none;border:0;background:none;color:#fff;width:40px;height:40px;padding:8px}
.menu-button span{display:block;width:24px;height:1px;background:currentColor;margin:7px 0}
.hero{position:relative;min-height:760px;height:100svh;max-height:980px;overflow:hidden;background:linear-gradient(122deg,#0a0d0b 0%,#171b18 55%,#111512 100%);color:#fff;display:flex;align-items:center}
.hero:before{content:"";position:absolute;width:760px;height:760px;right:-130px;top:-170px;border-radius:50%;background:radial-gradient(circle,rgba(68,184,101,.17),transparent 66%);filter:blur(3px)}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:90px 90px;mask-image:linear-gradient(90deg,transparent,#000 55%,#000)}
.hero-layout{position:relative;z-index:1;display:grid;grid-template-columns:.9fr 1.1fr;gap:70px;align-items:center;padding-top:40px}
.overline,.eyebrow{color:var(--green);font-size:11px;font-weight:900;letter-spacing:.18em}
.hero h1{font-size:clamp(48px,5.5vw,84px);line-height:1.09;letter-spacing:-.065em;margin:25px 0 28px;max-width:750px}
.hero h1 em{font-style:normal;color:var(--acid)}
.hero-lead{max-width:600px;color:#bbc1bc;font-size:17px;line-height:1.9;word-break:keep-all}
.hero-actions{display:flex;gap:11px;margin-top:36px;flex-wrap:wrap}
.button{min-height:52px;padding:12px 24px;display:inline-flex;justify-content:center;align-items:center;font-size:13px;font-weight:800;letter-spacing:.03em;transition:.25s}
.button:hover{transform:translateY(-2px)}
.button-solid{background:var(--green);color:#071108}
.button-line{border:1px solid rgba(255,255,255,.45);color:#fff}
.hero-product{position:relative}
.product-index{position:absolute;right:0;top:-35px;color:#8d958e;font-size:11px;font-weight:800;letter-spacing:.15em}
.product-stage{position:relative;display:grid;place-items:center;padding:55px;background:linear-gradient(145deg,#f0f1ed,#b8bbb6);clip-path:polygon(7% 0,100% 0,100% 87%,93% 100%,0 100%,0 13%);box-shadow:0 45px 100px rgba(0,0,0,.35)}
.product-stage:before{content:"";position:absolute;inset:15px;border:1px solid rgba(255,255,255,.62)}
.product-stage img{position:relative;z-index:1;filter:drop-shadow(0 28px 24px rgba(0,0,0,.32));transform:rotate(-2deg)}
.hero-product>p{text-align:right;margin:13px 0 0;color:#787f79;font-size:10px;letter-spacing:.16em;text-transform:uppercase}
.hero-foot{position:absolute;z-index:1;left:50%;transform:translateX(-50%);bottom:28px;display:flex;justify-content:space-between;color:#747b75;font-size:10px;font-weight:700;letter-spacing:.15em}
.scroll-cue:after{content:"";display:inline-block;width:42px;height:1px;background:#6b726c;margin:0 0 3px 13px}
.section{padding:130px 0}
.section-number{display:block;color:#929891;font-size:12px;font-weight:800;letter-spacing:.12em;margin-bottom:70px}
.section-number:after{content:"";display:inline-block;vertical-align:middle;width:70px;height:1px;background:currentColor;margin-left:14px;opacity:.55}
.intro{background:var(--paper)}
.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:110px}
.intro h2,.section-top h2,.install-copy h2,.quality h2{font-size:clamp(38px,4.3vw,61px);line-height:1.2;letter-spacing:-.06em;margin:14px 0 0;word-break:keep-all}
.intro-copy .lead{font-size:21px;line-height:1.75;color:#292e2a;letter-spacing:-.02em}
.intro-copy>p:last-child{color:#6d746e;font-size:15px;line-height:1.9}
.value-row{display:grid;grid-template-columns:repeat(3,1fr);margin-top:100px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.value-row article{padding:35px 38px 38px;border-right:1px solid var(--line)}
.value-row article:first-child{padding-left:0}
.value-row article:last-child{border:0}
.value-row span,.response-flow span{font-size:10px;color:var(--green);font-weight:900;letter-spacing:.14em}
.value-row h3{font-size:19px;margin:22px 0 9px}
.value-row p{margin:0;color:#777d77;font-size:13px;line-height:1.7}
.technology{background:var(--charcoal);color:#fff;overflow:hidden}
.section-top{display:grid;grid-template-columns:1.25fr .75fr;gap:100px;align-items:end}
.section-top .section-number{margin-bottom:75px}
.light-number{color:#7e8580}
.section-side{color:#9ba19c;font-size:15px;line-height:1.9;margin-bottom:6px}
.principle-board{margin-top:82px;display:grid;grid-template-columns:1fr 230px 1fr;align-items:center}
.field-card{min-height:220px;display:flex;align-items:center;gap:25px;padding:42px;border:1px solid var(--light-line);background:rgba(255,255,255,.025)}
.field-tag{font-size:58px;font-weight:200;color:var(--acid);line-height:1}
.field-card small{font-size:9px;color:#848a85;letter-spacing:.15em}
.field-card h3{font-size:26px;margin:5px 0}
.field-card p{font-size:13px;color:#8e9590;margin:0}
.coupling{position:relative;display:grid;place-items:center;align-content:center;height:230px}
.coupling i{position:absolute;border:1px solid rgba(101,207,119,.24);border-radius:50%;width:90px;height:90px}
.coupling i:nth-child(2){width:135px;height:135px}.coupling i:nth-child(3){width:185px;height:185px}
.coupling strong{z-index:1;font-size:31px;color:var(--acid)}
.coupling span{z-index:1;font-size:8px;color:#767e77;letter-spacing:.2em}
.response-flow{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--light-line);margin-top:40px}
.response-flow article{background:var(--charcoal);padding:32px 34px}
.response-flow h3{font-size:18px;margin:18px 0 8px}.response-flow p{font-size:13px;color:#8e958f;margin:0}
.products{background:#e8e9e4}
.dark-text{color:var(--ink)}
.product-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;margin-top:75px}
.product-card{background:#f6f6f2;border:1px solid #d4d6d0}
.product-visual{position:relative;display:grid;place-items:center;min-height:410px;padding:60px 55px;background:radial-gradient(circle at center,#fff,#dadcd7 78%);overflow:hidden}
.product-visual>span{position:absolute;top:23px;left:25px;font-size:11px;font-weight:900;letter-spacing:.14em;color:#727872}
.product-visual img{filter:drop-shadow(0 28px 20px rgba(0,0,0,.24))}
.compact .product-visual img{width:88%}
.product-info{display:grid;grid-template-columns:1fr 1fr;gap:35px;padding:34px 35px;border-top:1px solid #d4d6d0}
.product-info .eyebrow{margin-bottom:5px}.product-info h3{font-size:35px;line-height:1;margin:0 0 13px;letter-spacing:-.05em}.product-info p{font-size:13px;color:#737a74;margin:0}
.product-info dl{margin:0}.product-info dl div{display:flex;justify-content:space-between;gap:10px;padding:8px 0;border-bottom:1px solid #dedfda;font-size:10px}.product-info dt{color:#8b908b}.product-info dd{margin:0;text-align:right;font-weight:800}
.compact .product-info{grid-template-columns:1fr}.compact .product-visual{min-height:410px}
.installation{background:#101310;color:#fff;padding-bottom:80px}
.install-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:90px;align-items:center}
.install-copy>p:not(.eyebrow){color:#9ca29d;font-size:15px;line-height:1.9;max-width:550px;margin-top:28px}
.install-points{list-style:none;padding:0;margin:48px 0 0;border-top:1px solid var(--light-line)}
.install-points li{display:grid;grid-template-columns:48px 1fr;gap:18px;padding:20px 0;border-bottom:1px solid var(--light-line)}
.install-points b{color:var(--green);font-size:11px}.install-points span{color:#7f8680;font-size:12px}.install-points strong{display:block;color:#e5e9e5;font-size:14px;margin-bottom:2px}
.install-diagram{position:relative;height:600px;border:1px solid rgba(255,255,255,.22);background:linear-gradient(140deg,#1d211e,#111411);overflow:hidden}
.cabinet-label{position:absolute;left:24px;top:20px;color:#737a74;font-size:9px;letter-spacing:.14em}
.busbars{position:absolute;left:13%;top:85px;bottom:70px;display:flex;gap:45px}
.busbars i{display:block;width:25px;background:linear-gradient(90deg,#9a613d,#d29a6e 45%,#74462f);box-shadow:0 0 25px rgba(215,139,84,.12)}
.field-rings{position:absolute;left:8%;top:110px;width:280px;height:350px}
.field-rings i{position:absolute;border:1px solid rgba(101,207,119,.18);border-radius:50%;width:180px;height:180px;top:75px}
.field-rings i:nth-child(1){left:-50px}.field-rings i:nth-child(2){left:20px}.field-rings i:nth-child(3){left:90px}
.device{position:absolute;right:11%;top:33%;width:245px;height:175px;border:2px solid #bec2bd;background:linear-gradient(135deg,#eaebe7,#aeb1ad);box-shadow:0 24px 40px rgba(0,0,0,.46);color:#111;padding:30px}
.device:before{content:"";position:absolute;inset:9px;border:1px solid rgba(255,255,255,.75)}
.device span{position:relative;display:block;font-size:26px;font-weight:900;letter-spacing:.09em}.device span:after{content:"";display:inline-block;width:9px;height:22px;margin-left:3px;background:var(--green);clip-path:polygon(0 100%,50% 0,100% 100%,53% 70%)}
.device small{position:relative;display:block;margin-top:42px;font-size:10px;letter-spacing:.13em}
.bolt{position:absolute;width:9px;height:9px;border-radius:50%;background:#777;border:2px solid #d2d4d0;z-index:2}
.b1{left:-35px;top:20px}.b2{right:-35px;top:20px}.b3{left:-35px;bottom:20px}.b4{right:-35px;bottom:20px}
.bracket{position:absolute;top:37%;width:50px;height:130px;border-top:5px solid #777d78;border-bottom:5px solid #777d78}
.left-bracket{right:calc(11% + 237px);border-left:5px solid #777d78}.right-bracket{right:calc(11% - 42px);border-right:5px solid #777d78}
.install-diagram>p{position:absolute;bottom:20px;right:24px;margin:0;color:#717872;font-size:10px;letter-spacing:.08em}
.safety-note{margin-top:45px;padding-top:28px;border-top:1px solid var(--light-line);display:grid;grid-template-columns:180px 1fr;gap:30px}
.safety-note strong{color:var(--acid);font-size:10px;letter-spacing:.16em}.safety-note p{margin:0;color:#838a84;font-size:12px}
.process{background:var(--paper)}
.process-list{list-style:none;padding:0;margin:75px 0 0;border-top:1px solid var(--line)}
.process-list li{display:grid;grid-template-columns:100px 1fr;align-items:center;min-height:155px;border-bottom:1px solid var(--line);transition:.25s}
.process-list li:hover{background:rgba(255,255,255,.55);padding-left:18px}
.process-list>li>span{font-size:12px;color:var(--green);font-weight:900}
.process-list div{display:grid;grid-template-columns:150px 180px 1fr;align-items:center;gap:35px}
.process-list small{font-size:9px;color:#979c97;letter-spacing:.14em}.process-list h3{font-size:24px;margin:0}.process-list p{margin:0;color:#737973;font-size:13px}
.quality{background:#daddd7}
.quality-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:100px;align-items:start}
.quality-grid>div:first-child>p:last-child{margin-top:30px;color:#697069;max-width:490px;font-size:14px}
.quality-cards{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line);border-left:1px solid var(--line)}
.quality-cards article{min-height:215px;padding:30px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.quality-cards span{color:var(--green);font-size:10px;font-weight:900}.quality-cards h3{font-size:19px;margin:38px 0 8px}.quality-cards p{color:#747b74;font-size:12px;margin:0}
.closing{position:relative;overflow:hidden;background:var(--green);padding:125px 0;color:#081109}
.closing-lines{position:absolute;inset:-250px -100px;background:repeating-radial-gradient(ellipse at 88% 50%,transparent 0,transparent 34px,rgba(5,30,11,.13) 35px,transparent 36px)}
.closing .shell{position:relative}.closing .overline{color:#174722}.closing h2{font-size:clamp(51px,7vw,92px);line-height:1.03;letter-spacing:-.07em;margin:24px 0}.closing p:not(.overline){max-width:550px;font-size:16px}.button-dark{margin-top:24px;background:#111a13;color:#fff;gap:60px}
footer{background:#0c0f0d;color:#7e857f;padding:70px 0 28px}
.footer-top{display:flex;justify-content:space-between;align-items:flex-start;padding-bottom:65px}
.footer-logo{color:#fff}
.company-info{display:flex;flex-direction:column;align-items:flex-end;text-align:right;gap:4px;font-size:12px;line-height:1.7}
.company-info strong{color:#fff;font-size:15px}
.company-info a{color:var(--acid);font-weight:800}
.company-info a:hover{text-decoration:underline}
.footer-bottom{border-top:1px solid var(--light-line);padding-top:22px;display:flex;justify-content:space-between;gap:20px;font-size:12px}
a:focus-visible,button:focus-visible{outline:2px solid var(--acid);outline-offset:4px}
@media(max-width:1000px){
  .hero{height:auto;min-height:900px;padding:130px 0 90px}.hero-layout{grid-template-columns:1fr;gap:70px}.hero-copy{max-width:760px}.hero-product{max-width:720px;margin-left:auto}.hero-foot{display:none}
  .intro-grid,.section-top,.install-layout,.quality-grid{grid-template-columns:1fr;gap:50px}.section-top{align-items:start}.section-top .section-number{margin-bottom:45px}.section-side{max-width:650px}
  .product-grid{grid-template-columns:1fr}.compact .product-info{grid-template-columns:1fr 1fr}
  .install-diagram{height:570px}.quality-grid{gap:70px}
}
@media(max-width:720px){
  :root{--shell:min(100% - 36px,1240px)}
  .site-header{height:68px}.site-header.scrolled{height:64px}.wordmark{font-size:17px}.wordmark-symbol{width:27px;height:27px;font-size:13px}
  .menu-button{display:block;position:relative;z-index:2}.main-nav{display:none;position:absolute;left:0;right:0;top:0;padding:90px 24px 30px;background:#101310;flex-direction:column;align-items:flex-start;gap:24px;border-bottom:1px solid #3c413d}.main-nav.open{display:flex}.main-nav a{width:100%}.nav-cta{border:0;padding:0;color:var(--acid)}
  .hero{min-height:780px;padding:105px 0 68px}.hero h1{font-size:47px}.hero-lead{font-size:15px}.hero-layout{gap:50px}.product-stage{padding:30px}.product-index{top:-25px}.hero-actions{margin-top:27px}.button{min-height:48px;padding:10px 18px}
  .section{padding:85px 0}.section-number{margin-bottom:43px}.intro h2,.section-top h2,.install-copy h2,.quality h2{font-size:37px}.intro-grid{gap:32px}.intro-copy .lead{font-size:18px}
  .value-row{grid-template-columns:1fr;margin-top:60px}.value-row article,.value-row article:first-child{padding:25px 0;border-right:0;border-bottom:1px solid var(--line)}.value-row article:last-child{border-bottom:0}
  .principle-board{grid-template-columns:1fr;margin-top:55px}.coupling{height:190px}.field-card{min-height:180px;padding:30px}.response-flow{grid-template-columns:1fr}.response-flow article{padding:26px 5px}
  .product-grid{margin-top:52px}.product-visual,.compact .product-visual{min-height:270px;padding:45px 28px}.product-info,.compact .product-info{grid-template-columns:1fr;padding:27px;gap:25px}
  .install-diagram{height:440px}.busbars{left:8%;gap:25px}.busbars i{width:18px}.field-rings{left:0;transform:scale(.72)}.device{right:7%;width:180px;height:130px;padding:22px}.device span{font-size:20px}.device small{margin-top:27px}.bracket{top:37%;height:105px}.left-bracket{right:calc(7% + 173px)}.right-bracket{right:calc(7% - 40px)}.install-diagram>p{left:20px;right:auto}.safety-note{grid-template-columns:1fr;gap:10px}
  .process-list{margin-top:50px}.process-list li{grid-template-columns:48px 1fr;min-height:175px}.process-list div{grid-template-columns:1fr;gap:3px;padding:20px 0}.process-list h3{margin:2px 0 7px}.process-list li:hover{padding-left:0}
  .quality-cards{grid-template-columns:1fr}.quality-cards article{min-height:180px}.quality-cards h3{margin-top:25px}
  .closing{padding:88px 0}.closing h2{font-size:56px}.footer-top,.footer-bottom{flex-direction:column}.company-info{align-items:flex-start;text-align:left}.footer-bottom{line-height:1.7}
}
@media(max-width:390px){.hero h1{font-size:41px}.hero-actions{display:grid}.button{width:100%}.install-diagram{height:400px}.device{right:4%;width:155px}.left-bracket{right:calc(4% + 148px)}.right-bracket{right:calc(4% - 40px)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button,.process-list li,.site-header{transition:none}.button:hover{transform:none}}