:root{
  --navy:#0a2f6b;
  --blue:#009ad8;
  --sky:#eaf6fb;
  --ink:#1f2937;
  --muted:#667085;
  --line:#e5e7eb;
  --bg:#f7f9fc;
  --white:#ffffff;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Malgun Gothic","Noto Sans KR",Arial,sans-serif;
  color:var(--ink);
  background:var(--white);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1180px,calc(100% - 40px));margin:0 auto}
.header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
}
.nav{
  min-height:78px;display:flex;align-items:center;gap:28px;
}
.logo{width:230px;flex:0 0 auto}
.logo img{width:100%;height:auto}
.menu{display:flex;gap:30px;margin-left:auto;align-items:center}
.menu a{font-weight:700;font-size:15px;padding:29px 0;position:relative}
.menu a:hover::after,.menu a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:18px;height:3px;
  background:var(--blue);border-radius:4px;
}
.lang{
  display:flex;border:1px solid var(--line);border-radius:20px;overflow:hidden;
  margin-left:8px;
}
.lang button{
  border:0;background:#fff;padding:8px 11px;cursor:pointer;font-weight:700;color:var(--muted)
}
.lang button.active{background:var(--navy);color:#fff}
.hero{
  min-height:620px;
  background:#0a2f6b;
  color:white;display:flex;align-items:center;overflow:hidden;position:relative;
}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-slide{
  position:absolute;inset:0;
  background-position:center center;
  background-size:cover;
  background-repeat:no-repeat;
  opacity:0;
  transform:scale(1.02);
  transition:opacity .9s ease, transform 6s ease;
}
.hero-slide.active{opacity:1;transform:scale(1)}
.hero::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(100deg,rgba(5,34,77,.78),rgba(7,70,124,.50) 55%,rgba(7,70,124,.18));
}
.hero::after{
  content:"";position:absolute;width:520px;height:520px;border:1px solid rgba(255,255,255,.15);
  border-radius:50%;right:-130px;top:35px;z-index:1;box-shadow:0 0 0 70px rgba(255,255,255,.03),0 0 0 140px rgba(255,255,255,.02)
}
.hero .container{position:relative;z-index:2}
.hero-copy{position:relative;z-index:2;max-width:760px}
.hero-dots{position:relative;z-index:2;display:flex;gap:10px;margin-top:28px}
.hero-dot{width:12px;height:12px;border-radius:50%;border:1px solid rgba(255,255,255,.8);background:rgba(255,255,255,.28);padding:0;cursor:pointer}
.hero-dot.active{background:#fff;transform:scale(1.1)}
.kicker{color:#8ddff9;font-weight:800;letter-spacing:.12em;font-size:13px;text-shadow:0 2px 12px rgba(0,0,0,.25)}
.hero h1{font-size:54px;line-height:1.12;margin:15px 0 18px;letter-spacing:-.04em;text-shadow:0 3px 18px rgba(0,0,0,.28)}
.hero p{font-size:19px;line-height:1.7;color:#eef6fd;max-width:680px;text-shadow:0 2px 14px rgba(0,0,0,.25)}
.btns{display:flex;gap:12px;margin-top:34px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:13px 24px;border-radius:6px;font-weight:800;border:1px solid transparent
}
.btn.primary{background:var(--blue);color:#fff}
.btn.ghost{border-color:rgba(255,255,255,.6);color:#fff;background:rgba(255,255,255,.08);backdrop-filter:blur(2px)}
.section{padding:82px 0}
.section.alt{background:var(--bg)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;margin-bottom:34px}
.section-head h2{font-size:36px;margin:0 0 8px;letter-spacing:-.04em}
.section-head p{margin:0;color:var(--muted);line-height:1.6}
.more{font-weight:800;color:var(--navy)}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;
  transition:.22s;min-height:230px;
}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(15,47,93,.10);border-color:#cbd9e8}
.card-visual{
  height:140px;background:linear-gradient(145deg,#edf5fb,#dbeef7);
  display:flex;align-items:center;justify-content:center;color:var(--navy);font-weight:900;
  font-size:42px;letter-spacing:-.04em;
}
.card-visual-image{background-size:cover;background-position:center center;background-repeat:no-repeat;color:transparent;font-size:0}
.sewer-card-image{background-image:url('card_sewer_cropped.png');background-position:center center;background-size:cover}
.drywet-card-image{background-image:url('card_drywet.png');background-position:center center;background-size:cover}
.wet-card-image{background-image:url('card_wet.png');background-position:center center;background-size:cover}
.card-body{padding:18px}
.card-body h3{margin:0 0 7px;font-size:18px}
.card-body p{margin:0;color:var(--muted);font-size:14px;line-height:1.6}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center}
.about-panel{
  min-height:340px;background:linear-gradient(145deg,var(--navy),#0e5d99);border-radius:16px;
  padding:44px;color:white;display:flex;flex-direction:column;justify-content:flex-end
}
.about-panel .big{font-size:54px;font-weight:900;line-height:1}
.about-copy h2{font-size:36px;margin:0 0 18px}
.about-copy p{line-height:1.85;color:#596579}
.quick{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.quick .q{
  border-top:4px solid var(--blue);background:#fff;padding:26px;border-radius:8px;
  box-shadow:0 5px 20px rgba(0,0,0,.04)
}
.q strong{display:block;font-size:20px;margin-bottom:9px}
.q span{color:var(--muted);font-size:14px;line-height:1.6}
.subhero{
  background:linear-gradient(120deg,var(--navy),#11649d);color:#fff;padding:74px 0 64px;
}
.subhero h1{font-size:42px;margin:0 0 12px}
.subhero p{color:#dcebf5;margin:0}
.product-layout{display:grid;grid-template-columns:260px 1fr;gap:34px;padding:54px 0 86px}
.cat-list{border:1px solid var(--line);border-radius:10px;overflow:hidden;height:max-content;position:sticky;top:105px}
.cat-list button{
  width:100%;padding:15px 17px;border:0;border-bottom:1px solid var(--line);
  background:#fff;text-align:left;cursor:pointer;font-weight:700;color:#344054
}
.cat-list button:last-child{border-bottom:0}
.cat-list button.active{background:var(--navy);color:#fff}
.product-top{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:22px}
.product-top h2{margin:0;font-size:30px}
.search{
  width:270px;border:1px solid var(--line);border-radius:7px;padding:11px 13px;font-size:14px
}
.models{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.model{
  border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff;transition:.2s
}
.model:hover{box-shadow:0 10px 28px rgba(15,47,93,.10);transform:translateY(-3px)}
.model-img{height:165px;background:linear-gradient(145deg,#f4f7fa,#e6edf5);display:flex;align-items:center;justify-content:center;color:#a0aec0;font-weight:800;background-size:contain;background-position:center center;background-repeat:no-repeat;padding:12px}.model-img.has-image{color:transparent;font-size:0;background-color:#fff}
.model-info{padding:18px}
.model-info small{color:var(--blue);font-weight:800}
.model-info h3{margin:6px 0 0;font-size:19px}
.detail{padding:56px 0 90px}
.breadcrumb{font-size:14px;color:var(--muted);margin-bottom:24px}
.detail-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:42px}
.detail-image{min-height:390px;background:linear-gradient(145deg,#eef3f7,#dde7ef);border-radius:12px;display:flex;align-items:center;justify-content:center;color:#7b8794;font-weight:800;background-size:contain;background-position:center center;background-repeat:no-repeat;padding:20px}.detail-image.has-image{background-color:#fff;color:transparent;font-size:0}
.detail-title small{color:var(--blue);font-weight:800}
.detail-title h1{font-size:42px;margin:8px 0 18px}
.detail-title p{color:var(--muted);line-height:1.75;white-space:pre-line}
.spec-section{margin-top:48px}
.spec-section h2{font-size:26px;border-bottom:2px solid var(--navy);padding-bottom:12px}
.spec-table{width:100%;border-collapse:collapse}
.spec-table th,.spec-table td{border-bottom:1px solid var(--line);padding:13px 14px;text-align:left}
.spec-table th{background:#f8fafc;width:38%}
.notice{
  margin-top:28px;background:#f3f8fc;border:1px solid #d7e7f2;padding:17px 18px;border-radius:8px;color:#475467;line-height:1.6
}
.footer{background:#111827;color:#cfd6df;padding:38px 0}
.footer-row{display:flex;justify-content:space-between;gap:30px;align-items:flex-start}
.footer img{width:245px;background:white;padding:9px;border-radius:5px}
.footer p{margin:4px 0;font-size:13px;line-height:1.6}
.mobile-btn{display:none;margin-left:auto;border:0;background:#fff;font-size:28px}
@media(max-width:950px){
  .menu{display:none;position:absolute;left:0;right:0;top:78px;background:#fff;padding:12px 20px 20px;border-bottom:1px solid var(--line);flex-direction:column;align-items:flex-start;gap:0}
  .menu.open{display:flex}.menu a{padding:12px 0}.lang{margin:10px 0}
  .mobile-btn{display:block}
  .hero h1{font-size:42px}
  .cards{grid-template-columns:repeat(2,1fr)}
  .about-grid{grid-template-columns:1fr}
  .product-layout{grid-template-columns:1fr}
  .cat-list{position:static;display:grid;grid-template-columns:repeat(2,1fr)}
  .models{grid-template-columns:repeat(2,1fr)}
  .detail-grid{grid-template-columns:1fr}
}
@media(max-width:620px){
  .container{width:min(100% - 26px,1180px)}
  .nav{min-height:68px}.logo{width:180px}.menu{top:68px}
  .hero{min-height:420px}.hero h1{font-size:34px}.hero p{font-size:16px}
  .section{padding:62px 0}.section-head{align-items:flex-start;flex-direction:column}
  .cards,.quick,.models{grid-template-columns:1fr}
  .cat-list{grid-template-columns:1fr}
  .product-top{align-items:flex-start;flex-direction:column}.search{width:100%}
  .footer-row{flex-direction:column}
}


/* Downloads page */
.download-page{padding:52px 0 88px;background:#fff}
.download-toolbar{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:26px;flex-wrap:wrap}
.download-filters{display:flex;gap:8px;flex-wrap:wrap}
.filter-btn{border:1px solid var(--line);background:#fff;color:#475467;border-radius:22px;padding:9px 15px;font-weight:700;cursor:pointer}
.filter-btn.active{background:var(--navy);border-color:var(--navy);color:#fff}
.download-search{width:320px;max-width:100%;border:1px solid var(--line);border-radius:7px;padding:11px 13px;font-size:14px}
.download-list{display:grid;gap:14px}
.download-item{display:grid;grid-template-columns:72px minmax(0,1fr) auto;gap:18px;align-items:center;border:1px solid var(--line);border-radius:10px;padding:20px;background:#fff;transition:.2s}
.download-item:hover{border-color:#c8d9e8;box-shadow:0 8px 24px rgba(15,47,93,.08)}
.pdf-icon{width:58px;height:68px;border-radius:8px;background:#f2f6fa;border:1px solid #d9e2ea;display:flex;align-items:center;justify-content:center;color:#cf2e2e;font-weight:900;font-size:15px;position:relative}
.pdf-icon::after{content:'PDF';position:absolute;bottom:9px;left:0;right:0;text-align:center;font-size:12px;letter-spacing:.06em}
.pdf-icon::before{content:'↧';font-size:25px;position:absolute;top:8px;color:var(--navy)}
.download-info{min-width:0}
.download-info h3{margin:0 0 8px;font-size:19px;line-height:1.45}
.download-meta{display:flex;gap:14px;flex-wrap:wrap;color:var(--muted);font-size:13px}
.download-meta span{display:inline-flex;align-items:center;gap:5px}
.download-actions{display:flex;gap:8px;align-items:center}
.file-btn{display:inline-flex;align-items:center;justify-content:center;min-width:92px;padding:10px 14px;border-radius:6px;border:1px solid var(--line);font-weight:800;font-size:14px;background:#fff;cursor:pointer}
.file-btn.preview{color:var(--navy)}
.file-btn.download{background:var(--blue);border-color:var(--blue);color:#fff}
.download-guide{margin-bottom:28px;background:#f5f9fc;border:1px solid #d9e8f2;border-radius:9px;padding:17px 19px;color:#475467;line-height:1.65;font-size:14px}
.empty-download{display:none;padding:50px 20px;text-align:center;color:var(--muted);border:1px dashed #ccd5df;border-radius:10px}
@media(max-width:760px){
  .download-item{grid-template-columns:58px 1fr;gap:14px}
  .download-actions{grid-column:1/-1;width:100%}
  .file-btn{flex:1}
  .pdf-icon{width:52px;height:62px}
  .download-search{width:100%}
}


/* Notice board */
.notice-wrap{padding:54px 0 90px}
.notice-guide{
  background:#f3f8fc;border:1px solid #d8e7f2;border-radius:8px;
  padding:14px 17px;margin-bottom:24px;color:#536273;font-size:14px;line-height:1.6
}
.notice-toolbar{
  display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:18px
}
.notice-count{font-size:14px;color:var(--muted)}
.notice-search{
  width:290px;border:1px solid var(--line);border-radius:7px;padding:10px 13px;font-size:14px
}
.notice-table{
  width:100%;border-collapse:collapse;border-top:2px solid var(--navy);
  table-layout:fixed
}
.notice-table th,.notice-table td{
  padding:16px 14px;border-bottom:1px solid var(--line);font-size:14px
}
.notice-table th{background:#f8fafc;color:#344054;font-weight:800}
.notice-table th:nth-child(1),.notice-table td:nth-child(1){width:90px;text-align:center}
.notice-table th:nth-child(3),.notice-table td:nth-child(3){width:135px;text-align:center}
.notice-table th:nth-child(4),.notice-table td:nth-child(4){width:90px;text-align:center}
.notice-title-link{font-weight:700;color:#25364d}
.notice-title-link:hover{color:var(--blue);text-decoration:underline}
.notice-badge{
  display:inline-block;margin-right:8px;padding:3px 7px;border-radius:4px;
  background:#eaf4fb;color:#0d6d9f;font-size:11px;font-weight:800;vertical-align:1px
}
.notice-detail{
  border-top:2px solid var(--navy);margin-top:6px
}
.notice-detail-head{padding:25px 22px;border-bottom:1px solid var(--line)}
.notice-detail-head h1{font-size:26px;margin:0 0 12px;letter-spacing:-.03em}
.notice-detail-meta{display:flex;gap:18px;color:var(--muted);font-size:13px}
.notice-detail-body{
  padding:38px 24px 48px;border-bottom:1px solid var(--line);
  min-height:280px;line-height:1.9;color:#3d4755
}
.notice-detail-body p{margin:0 0 18px}
.notice-detail-body ul{margin:10px 0 22px;padding-left:22px}
.notice-actions{display:flex;justify-content:flex-end;margin-top:20px}
.notice-actions .btn{background:var(--navy);color:#fff}
@media(max-width:620px){
  .notice-toolbar{align-items:flex-start;flex-direction:column}
  .notice-search{width:100%}
  .notice-table th:nth-child(1),.notice-table td:nth-child(1){display:none}
  .notice-table th:nth-child(4),.notice-table td:nth-child(4){display:none}
  .notice-table th:nth-child(3),.notice-table td:nth-child(3){width:105px}
  .notice-table th,.notice-table td{padding:13px 9px}
  .notice-detail-head h1{font-size:22px}
  .notice-detail-meta{flex-wrap:wrap;gap:8px 14px}
}


/* Directions / location page */
.location-wrap{padding:54px 0 90px}
.location-intro{margin-bottom:28px;color:var(--muted);line-height:1.7}
.location-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.location-card{
  background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;
  box-shadow:0 6px 22px rgba(15,47,93,.06)
}
.location-head{padding:22px 24px;border-bottom:1px solid var(--line)}
.location-head small{display:block;color:var(--blue);font-weight:800;margin-bottom:6px}
.location-head h2{margin:0 0 8px;font-size:24px;letter-spacing:-.03em}
.location-address{color:#566273;line-height:1.65;font-size:14px}
.map-frame{width:100%;height:360px;border:0;display:block;background:#eef3f7}
.map-visual{display:block;background:#eef3f7}
.map-static{display:block;width:100%;height:auto;max-height:360px;object-fit:contain;background:#eef3f7}
.location-actions{padding:16px 24px 22px;display:flex;gap:10px;flex-wrap:wrap}
.map-link{
  display:inline-flex;align-items:center;justify-content:center;
  padding:10px 15px;border-radius:6px;background:var(--navy);color:#fff;font-weight:800;font-size:14px
}
.map-link.secondary{background:#fff;color:var(--navy);border:1px solid #cdd8e5}
@media(max-width:850px){
  .location-grid{grid-template-columns:1fr}
  .map-frame{height:320px}
  .map-static{max-height:320px}
}



.footer a{color:#cfd6df;text-decoration:none}.footer a:hover{color:#fff;text-decoration:underline}


/* Company profile */
.company-wrap{padding:64px 0 92px}
.company-lead{
  max-width:900px;margin:0 auto 54px;text-align:center
}
.company-lead .kicker{margin-bottom:12px}
.company-lead h2{font-size:38px;margin:0 0 20px;letter-spacing:-.04em}
.company-lead p{margin:0;color:#596579;line-height:1.9;font-size:17px}
.company-section{margin-top:66px}
.company-section-head{margin-bottom:26px}
.company-section-head small{color:var(--blue);font-weight:900;letter-spacing:.08em}
.company-section-head h2{font-size:32px;margin:8px 0 0;letter-spacing:-.035em}
.business-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.business-card{
  border:1px solid var(--line);border-radius:12px;background:#fff;padding:28px;
  box-shadow:0 6px 22px rgba(15,47,93,.05)
}
.business-no{font-size:13px;font-weight:900;color:var(--blue);letter-spacing:.08em}
.business-card h3{font-size:22px;margin:12px 0 13px}
.business-card p{margin:0;color:#626f7f;line-height:1.75;font-size:14px}
.vision-box{
  background:linear-gradient(120deg,var(--navy),#0e659e);
  color:#fff;border-radius:16px;padding:42px;margin-bottom:24px
}
.vision-box small{color:#75d8f6;font-weight:900;letter-spacing:.08em}
.vision-box h3{font-size:31px;line-height:1.45;margin:12px 0 0;letter-spacing:-.035em}
.values-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.value-card{background:#f8fafc;border-top:4px solid var(--blue);border-radius:8px;padding:26px}
.value-card h3{margin:0 0 10px;font-size:20px}
.value-card p{margin:0;color:#626f7f;line-height:1.7;font-size:14px}
.timeline{position:relative;margin-top:12px}
.timeline:before{
  content:"";position:absolute;left:125px;top:8px;bottom:8px;width:2px;background:#d9e3ee
}
.timeline-row{display:grid;grid-template-columns:100px 1fr;gap:50px;position:relative;padding:0 0 26px}
.timeline-row:after{
  content:"";position:absolute;left:119px;top:7px;width:14px;height:14px;border-radius:50%;
  background:var(--blue);border:3px solid #fff;box-shadow:0 0 0 2px #cbd9e8
}
.timeline-date{font-weight:900;color:var(--navy);text-align:right}
.timeline-content{padding-left:0}
.timeline-content strong{font-size:17px}
.timeline-content p{margin:5px 0 0;color:var(--muted);font-size:14px}
@media(max-width:820px){
  .business-grid,.values-grid{grid-template-columns:1fr}
  .timeline:before{left:87px}
  .timeline-row{grid-template-columns:68px 1fr;gap:38px}
  .timeline-row:after{left:81px}
  .company-lead h2{font-size:31px}
  .vision-box{padding:30px}
  .vision-box h3{font-size:25px}
}




/* directions map size tuning */
.location-card .map-visual,
.location-card .map-frame{
  width:100%;
  max-width:none;
  margin:0;
  border-radius:0;
  overflow:hidden;
}

.location-card .map-visual{
  height:340px;
  background:#eef3f7;
}

.location-card .map-static{
  width:100%;
  height:100%;
  max-height:none;
  object-fit:cover;
  object-position:center center;
}

.location-card .map-frame{
  height:340px;
}

@media(max-width:850px){
  .location-card .map-visual,
  .location-card .map-frame{
    height:300px;
  }
}

@media(max-width:620px){
  .hero-dots{margin-top:20px;gap:8px}
  .hero-dot{width:10px;height:10px}
}

.water-card-image{background-image:url('card_water_main.png');background-size:cover;background-position:center;}


.spec-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:34px;align-items:start}
.spec-layout.with-diagram{grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr)}
.spec-main .spec-section:first-child,.diagram-panel{margin-top:48px}
.diagram-panel h2{font-size:26px;border-bottom:2px solid var(--navy);padding-bottom:12px;margin:0 0 16px}
.diagram-image{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px}
.diagram-image img{display:block;width:100%;height:auto}
@media (max-width: 980px){
  .spec-layout.with-diagram{grid-template-columns:1fr}
}

/* English typography: keep body copy in sentence case, uppercase UI/headings */
html[lang="en"] .menu a,
html[lang="en"] h1,
html[lang="en"] h2,
html[lang="en"] h3,
html[lang="en"] .btn,
html[lang="en"] .more,
html[lang="en"] .kicker,
html[lang="en"] .filter-btn,
html[lang="en"] .file-btn,
html[lang="en"] .notice-badge,
html[lang="en"] th,
html[lang="en"] .q strong {
  text-transform: uppercase;
}

/* Keep model/specification values and descriptive copy in their original case */
html[lang="en"] .spec-table td,
html[lang="en"] .card-body p,
html[lang="en"] .product-card p,
html[lang="en"] .company-lead p,
html[lang="en"] .business-card p,
html[lang="en"] .value-card p,
html[lang="en"] .timeline-content p,
html[lang="en"] .notice-detail-body,
html[lang="en"] .subhero p {
  text-transform: none;
}