/* Semitron Technology. 로고의 남색과 빨강, 정밀측정의 눈금, 가공의 모따기(chamfer) */
:root {
  --navy-950: #0c1726;
  --navy-900: #12223a;
  --navy-800: #1b3150;
  --steel-500: #4c6d8c;
  --steel-300: #93a9bf;
  --steel-200: #c3d0dd;
  --steel-100: #e8edf3;
  --paper: #f4f6f9;
  --white: #ffffff;
  --ink: #14243a;
  --ink-2: #46586d;
  --rule: #d3dbe4;
  --red: #e0313a;
  --red-btn: #d42a33;
  --red-btn-hover: #b9212a;
  --wrap: 75rem;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --header-h: 5rem;
  font-family: "IBM Plex Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
  color: var(--ink);
  background: var(--white);
  -webkit-text-size-adjust: 100%;
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.75;
  word-break: keep-all;
  overflow-wrap: break-word;
  background: var(--white);
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-underline-offset: 0.2em; }
:focus-visible { outline: 2px solid var(--red); outline-offset: 3px; }
p { margin: 0 0 1rem; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap;
}

.skip {
  position: absolute; left: 1rem; top: -4rem; z-index: 20;
  padding: 0.5rem 1rem; background: var(--navy-900); color: var(--white);
}
.skip:focus { top: 1rem; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* chamfer: 로고의 비스듬히 잘린 끝과 가공 모따기 */
.chamfer { clip-path: polygon(0 0, calc(100% - 1.75rem) 0, 100% 1.75rem, 100% 100%, 0 100%); }

/* measuring scale strip */
.scale {
  height: 0.875rem;
  --scale: rgba(147, 169, 191, 0.55);
  background:
    linear-gradient(to right, var(--scale) 1px, transparent 1px) 0 100% / 2.5rem 0.875rem repeat-x,
    linear-gradient(to right, var(--scale) 1px, transparent 1px) 0 100% / 0.5rem 0.375rem repeat-x;
}

/* buttons */
.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0 1.5rem;
  border: 1.5px solid transparent;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary { background: var(--red-btn); color: var(--white); }
.btn-primary:hover { background: var(--red-btn-hover); }
.btn-outline-light { border-color: rgba(255, 255, 255, 0.7); color: var(--white); }
.btn-outline-light:hover { background: rgba(255, 255, 255, 0.1); }
.btn-outline { border-color: var(--navy-900); color: var(--navy-900); }
.btn-outline:hover { background: var(--steel-100); }

.more {
  display: inline-block;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--navy-800);
  text-decoration: none;
  border-bottom: 1.5px solid var(--red);
  padding-bottom: 0.125rem;
}
.more:hover { color: var(--red-btn-hover); }

/* header and main navigation */
.site-header {
  position: relative;
  z-index: 10;
  background: var(--white);
  border-bottom: 1px solid var(--rule);
}
.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: var(--header-h);
}
.brand { display: flex; align-items: center; gap: 0.75rem; text-decoration: none; flex-shrink: 0; }
.brand img { width: 2.125rem; }
.brand-name { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name strong { font-size: 1.0625rem; font-weight: 700; letter-spacing: 0.02em; color: var(--navy-900); }
.brand-name span { font-size: 0.8125rem; color: var(--steel-500); }

.gnb { display: flex; align-items: center; gap: 1.5rem; }
.gnb-list { display: flex; margin: 0; padding: 0; list-style: none; }
.gnb-item { position: relative; }
.gnb-link {
  display: block;
  padding: 0 1.125rem;
  line-height: var(--header-h);
  font-weight: 600;
  font-size: 1.0625rem;
  color: var(--ink);
  text-decoration: none;
  box-shadow: inset 0 -3px 0 transparent;
}
.gnb-item:hover > .gnb-link,
.gnb-item:focus-within > .gnb-link,
.gnb-item.is-current > .gnb-link { box-shadow: inset 0 -3px 0 var(--red); }
.gnb-sub {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 12rem;
  margin: 0;
  padding: 0.5rem 0;
  list-style: none;
  background: var(--white);
  border: 1px solid var(--rule);
  border-top: 0;
}
.gnb-item:hover .gnb-sub,
.gnb-item:focus-within .gnb-sub { display: block; }
.gnb-sub a {
  display: block;
  padding: 0.5rem 1.25rem;
  font-size: 0.9375rem;
  color: var(--ink-2);
  text-decoration: none;
  white-space: nowrap;
}
.gnb-sub a:hover, .gnb-sub a[aria-current="page"] { color: var(--navy-900); background: var(--steel-100); }
.lang-link {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--steel-500);
  text-decoration: none;
  border: 1px solid var(--rule);
  padding: 0.25rem 0.625rem;
}
.lang-link:hover { color: var(--navy-900); border-color: var(--navy-900); }
.menu-toggle {
  display: none;
  min-height: 2.75rem;
  padding: 0 1rem;
  font: inherit;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--navy-900);
  background: var(--white);
  border: 1.5px solid var(--navy-900);
  white-space: nowrap;
  cursor: pointer;
}

/* home hero */
.hero { background: var(--navy-900); color: var(--white); }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  padding-top: clamp(3rem, 8vw, 6rem);
  padding-bottom: clamp(3rem, 7vw, 5.5rem);
}
.hero h1 {
  margin: 0 0 1.25rem;
  font-size: clamp(2.125rem, 4.6vw, 3.5rem);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.hero .lede { margin: 0 0 2.25rem; max-width: 34rem; color: var(--steel-200); font-size: 1.125rem; }
.hero .btn-outline-light { border-color: rgba(255, 255, 255, 0.6); }

.callout-figure { position: relative; margin: 0; }
.callout-figure img { width: 100%; }
.callout-figure svg {
  position: absolute; inset: 0; width: 100%; height: 100%;
  overflow: visible; pointer-events: none;
}
.callout-figure svg polyline {
  stroke: var(--red); stroke-width: 1.5; fill: none; vector-effect: non-scaling-stroke;
}
.callout-figure svg circle { fill: var(--red); }
.callout {
  position: absolute;
  padding: 0.25rem 0.625rem;
  background: var(--white);
  color: var(--ink);
  border: 1px solid var(--red);
  font-size: 0.8125rem;
  line-height: 1.4;
  font-weight: 500;
  white-space: nowrap;
}
.callout-a { left: 2%; top: -0.875rem; }
.callout-b { right: 2%; bottom: -0.875rem; }
@media (prefers-reduced-motion: no-preference) {
  .callout-figure svg polyline { stroke-dasharray: 600; stroke-dashoffset: 600; animation: draw 1.1s 0.3s ease-out forwards; }
  .callout-figure svg circle, .callout { opacity: 0; animation: appear 0.4s 1.2s ease-out forwards; }
}
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes appear { to { opacity: 1; } }

/* title block: key facts laid out like a drawing title block */
.figures { padding: 3rem 0 0; }
.title-block {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  border: 1.5px solid var(--navy-900);
  background: var(--white);
}
.title-block div { padding: 0.875rem 1.125rem 1rem; border-left: 1px solid var(--navy-900); }
.title-block div:first-child { border-left: 0; }
.title-block dt { font-size: 0.8125rem; color: var(--steel-500); }
.title-block dd { margin: 0.125rem 0 0; font-size: clamp(1.1875rem, 2vw, 1.5rem); font-weight: 700; line-height: 1.35; color: var(--navy-900); }
.title-block dd small { display: block; font-size: 0.8125rem; font-weight: 400; color: var(--ink-2); }

/* home sections */
.home-section { padding: clamp(3.5rem, 8vw, 6rem) 0; }
.home-section.alt { background: var(--paper); }
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 2rem;
  margin-bottom: 2rem;
}
.section-head h2, .split h2 { margin: 0; }
h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.625rem, 3vw, 2.125rem);
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--navy-900);
}
h3 { margin: 0 0 0.75rem; font-size: 1.3125rem; line-height: 1.4; font-weight: 600; color: var(--navy-900); }

.tile-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.tile-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.tile { display: block; text-decoration: none; height: 100%; }
.tile img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: var(--steel-100); }
.tile-name { display: block; margin-top: 0.875rem; font-weight: 600; font-size: 1.0625rem; line-height: 1.45; color: var(--navy-900); }
.tile-desc { display: block; margin-top: 0.25rem; font-size: 0.9375rem; line-height: 1.6; color: var(--ink-2); }
a.tile:hover .tile-name { text-decoration: underline; text-decoration-color: var(--red); text-decoration-thickness: 2px; }

.split {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 2rem clamp(2rem, 6vw, 5rem);
  align-items: start;
}
.split p { color: var(--ink-2); margin-top: 1rem; }
.cert-mini { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin: 0; padding: 0; list-style: none; }
.cert-mini a { display: grid; grid-template-columns: 5.5rem 1fr; gap: 1rem; align-items: center; text-decoration: none; }
.cert-mini img { border: 1px solid var(--rule); }
.cert-mini strong { display: block; color: var(--navy-900); font-size: 1.125rem; }
.cert-mini span { font-size: 0.875rem; color: var(--ink-2); }

/* sub pages */
.subvisual {
  position: relative;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(18, 34, 58, 0.97) 0%, rgba(18, 34, 58, 0.9) 50%, rgba(18, 34, 58, 0.72) 100%),
    var(--bg, none) center / cover,
    var(--navy-900);
}
.subvisual .wrap { padding-top: clamp(2.25rem, 6vw, 3.75rem); padding-bottom: clamp(1.75rem, 4vw, 2.75rem); }
.subvisual-title {
  margin: 0;
  font-size: clamp(2rem, 4.2vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.crumbs { display: flex; flex-wrap: wrap; gap: 0.25rem 0; margin-bottom: 0.75rem; font-size: 0.875rem; color: var(--steel-200); }
.crumbs a { text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }
.crumbs > * + *::before { content: "›"; margin: 0 0.5rem; color: var(--steel-300); }

.lnb { background: var(--white); border-bottom: 1px solid var(--rule); }
.lnb ul { display: flex; margin: 0; padding: 0; list-style: none; overflow-x: auto; scrollbar-width: none; }
.lnb a {
  display: block;
  padding: 1rem 1.375rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--ink-2);
  text-decoration: none;
  white-space: nowrap;
  box-shadow: inset 0 -3px 0 transparent;
}
.lnb li:first-child a { padding-left: 0; }
.lnb a:hover { color: var(--navy-900); }
.lnb a[aria-current="page"] { color: var(--navy-900); font-weight: 700; box-shadow: inset 0 -3px 0 var(--red); }

.page { padding: clamp(2.75rem, 6vw, 4.5rem) 0 clamp(4rem, 8vw, 6.5rem); }
.page-title {
  margin: 0 0 2rem;
  padding-bottom: 1.25rem;
  font-size: clamp(1.75rem, 3.2vw, 2.25rem);
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--navy-900);
  border-bottom: 1px solid var(--rule);
}
.page h2 { font-size: clamp(1.375rem, 2.4vw, 1.625rem); margin-top: 3.5rem; }
.page h2:first-child, .page-title + h2 { margin-top: 0; }
.lead { max-width: 46rem; font-size: 1.1875rem; line-height: 1.8; color: var(--ink-2); margin-bottom: 2.5rem; }
.muted { color: var(--ink-2); }
.note { font-size: 0.875rem; color: var(--ink-2); }

/* tables */
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.9375rem; line-height: 1.6; }
caption { text-align: left; font-weight: 600; font-size: 1.125rem; padding-bottom: 0.75rem; color: var(--navy-900); }
th, td { text-align: left; vertical-align: top; padding: 0.75rem 1rem 0.75rem 0; border-bottom: 1px solid var(--rule); }
thead th { font-size: 0.8125rem; font-weight: 500; color: var(--steel-500); border-bottom: 1.5px solid var(--navy-900); padding-top: 0; }
tbody th { font-weight: 500; }
td.num, th.num { text-align: right; padding-right: 0; font-variant-numeric: tabular-nums; white-space: nowrap; }

.info-table { border-top: 2px solid var(--navy-900); max-width: 56rem; }
.info-table th {
  width: 9.5rem;
  padding-left: 1.25rem;
  background: var(--paper);
  color: var(--navy-900);
  font-weight: 600;
}
.info-table td { padding-left: 1.5rem; }

.equipment { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 3rem; }
.stack > * + * { margin-top: 3rem; }

/* spec list */
.spec { margin: 1.25rem 0 0; border-top: 1px solid var(--rule); }
.spec div {
  display: grid;
  grid-template-columns: 8rem minmax(0, 1fr);
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--rule);
  font-size: 0.9375rem;
  line-height: 1.6;
}
.spec dt { color: var(--steel-500); }
.spec dd { margin: 0; }

/* product detail */
.detail {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: start;
}
.detail-photos { display: grid; gap: 0.75rem; margin: 0; }
.detail-body > p { color: var(--ink-2); }

/* sequence of steps */
.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}
.steps li {
  counter-increment: step;
  padding: 0.75rem 0.75rem 0 0;
  border-top: 3px solid var(--navy-900);
  font-weight: 500;
  line-height: 1.45;
}
.steps li::before { content: counter(step); display: block; font-weight: 700; color: var(--steel-500); font-size: 0.875rem; }
.steps li.critical { border-top-color: var(--red); }
.steps li.critical::before { color: var(--red); }
.steps li small { display: block; font-weight: 400; font-size: 0.8125rem; color: var(--ink-2); margin-top: 0.25rem; }

/* business area rows */
.rows { margin: 0; padding: 0; list-style: none; }
.rows > li {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
  padding: 2rem 0;
  border-top: 1px solid var(--rule);
}
.rows > li:first-child { border-top: 0; padding-top: 0; }
.rows img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.rows p { color: var(--ink-2); }

/* philosophy */
.policy { margin: 0; padding: 0; list-style: none; counter-reset: policy; max-width: 52rem; }
.policy li {
  counter-increment: policy;
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--rule);
  font-size: 1.1875rem;
  font-weight: 500;
  color: var(--navy-900);
}
.policy li::before { content: counter(policy); font-weight: 700; color: var(--red); }
.goals {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
  border: 1.5px solid var(--navy-900);
}
.goals li {
  padding: 2rem 1.25rem;
  border-left: 1px solid var(--navy-900);
  text-align: center;
  font-size: 1.1875rem;
  font-weight: 600;
  color: var(--navy-900);
}
.goals li:first-child { border-left: 0; }

/* history */
.history { max-width: 52rem; }
.history-year {
  display: grid;
  grid-template-columns: 9rem minmax(0, 1fr);
  gap: 1rem;
  padding: 1.75rem 0;
  border-top: 2px solid var(--navy-900);
}
.history-year h2 { margin: 0 !important; font-size: 2rem; color: var(--steel-500); line-height: 1.2; font-variant-numeric: tabular-nums; }
.history-year ol { margin: 0; padding: 0; list-style: none; }
.history-year li { display: grid; grid-template-columns: 3.5rem minmax(0, 1fr); padding: 0.375rem 0; }
.history-year time { font-weight: 700; color: var(--navy-900); font-variant-numeric: tabular-nums; }

/* organization chart */
.org { max-width: 52rem; margin: 1rem auto 0; text-align: center; }
.org-top { position: relative; display: flex; justify-content: center; padding-bottom: 5.5rem; }
.org-top::after { content: ""; position: absolute; left: 50%; bottom: 0; height: 5.5rem; border-left: 1.5px solid var(--navy-900); }
.org-box {
  display: inline-block;
  min-width: 9rem;
  padding: 0.875rem 1.25rem;
  border: 1.5px solid var(--navy-900);
  background: var(--white);
  font-weight: 600;
  color: var(--navy-900);
}
.org-ceo { background: var(--navy-900); color: var(--white); position: relative; z-index: 1; }
.org-staff { position: absolute; left: calc(50% + 3rem); top: 4.5rem; }
.org-staff::before { content: ""; position: absolute; right: 100%; top: 50%; width: 3rem; border-top: 1.5px solid var(--navy-900); }
.org-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin: 0;
  padding: 2.5rem 0 0;
  list-style: none;
  position: relative;
}
.org-row::before {
  content: ""; position: absolute; top: 0;
  left: calc(12.5% - 0.375rem); right: calc(12.5% - 0.375rem);
  border-top: 1.5px solid var(--navy-900);
}
.org-row li { position: relative; }
.org-row li::before { content: ""; position: absolute; left: 50%; top: -2.5rem; height: 2.5rem; border-left: 1.5px solid var(--navy-900); }
.org-row .org-box { display: block; min-width: 0; }

/* map */
.map { width: 100%; aspect-ratio: 16 / 9; border: 1px solid var(--rule); background: var(--steel-100); }
.map-links { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.5rem; }

/* inspection and certificates */
.inspection { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0.5rem; margin: 1.5rem 0 0.75rem; }
.inspection img { aspect-ratio: 4 / 3; object-fit: cover; width: 100%; }
.check-list { margin: 0 0 1rem; padding-left: 1.25rem; color: var(--ink-2); }
.check-list li + li { margin-top: 0.375rem; }
.certs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 3rem; }
.cert img { border: 1px solid var(--rule); width: 100%; max-width: 26rem; }
.cert a.thumb { display: block; }
.cert a.thumb:hover img { border-color: var(--navy-900); }
.cert h2 { margin-top: 1.5rem !important; }
.cert .links { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 1rem; font-size: 0.9375rem; }

/* contact */
.contact-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 2.5rem 4rem; align-items: start; }
.contact-list { margin: 0; border-top: 2px solid var(--navy-900); }
.contact-list div {
  display: grid;
  grid-template-columns: 6.5rem minmax(0, 1fr);
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--rule);
}
.contact-list dt { color: var(--steel-500); font-size: 0.9375rem; }
.contact-list dd { margin: 0; }
.contact-list a { font-weight: 600; }
.aside-box { background: var(--paper); padding: 1.75rem; border-top: 3px solid var(--red); }
.aside-box h2 { margin-top: 0 !important; font-size: 1.25rem !important; }

/* CTA band */
.cta-band { background: var(--navy-800); color: var(--white); }
.cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem 3rem;
  padding-top: 2.75rem;
  padding-bottom: 2.75rem;
}
.cta-title { margin: 0; font-size: 1.375rem; font-weight: 700; }
.cta-text { margin: 0.25rem 0 0; color: var(--steel-200); }

/* footer */
.site-footer { background: var(--navy-950); color: var(--steel-200); font-size: 0.875rem; line-height: 1.7; padding: 3rem 0 2rem; }
.footer-grid { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 2rem 4rem; }
.footer-name { color: var(--white); font-weight: 700; font-size: 1rem; margin-bottom: 0.75rem; }
.footer-info { margin: 0; }
.footer-info div { display: flex; gap: 0.75rem; }
.footer-info dt { color: var(--steel-300); min-width: 4rem; }
.footer-info dd { margin: 0; }
.footer-links { display: grid; grid-template-columns: repeat(3, auto); gap: 0.5rem 2rem; margin: 0; padding: 0; list-style: none; align-content: start; }
.footer-links a { text-decoration: none; }
.footer-links a:hover { color: var(--white); text-decoration: underline; }
.copyright { margin: 2rem 0 0; padding-top: 1.25rem; border-top: 1px solid rgba(147, 169, 191, 0.25); color: var(--steel-300); font-size: 0.8125rem; }

/* responsive */
@media (max-width: 1080px) {
  .gnb-link { padding: 0 0.75rem; font-size: 1rem; }
}
@media (max-width: 960px) {
  :root { --header-h: 4.25rem; }
  .menu-toggle { display: inline-flex; align-items: center; }
  .gnb {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem var(--gutter) 1.5rem;
    background: var(--white);
    border-bottom: 1px solid var(--rule);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
  }
  .gnb[data-open="true"] { display: flex; }
  .gnb-list { flex-direction: column; }
  .gnb-item { border-bottom: 1px solid var(--rule); }
  .gnb-link { line-height: 1.4; padding: 0.875rem 0; box-shadow: none !important; }
  .gnb-item.is-current > .gnb-link { color: var(--red-btn); }
  .gnb-sub {
    display: flex; flex-wrap: wrap; gap: 0 1rem;
    position: static; transform: none; min-width: 0;
    padding: 0 0 0.75rem; border: 0;
  }
  .gnb-sub a { padding: 0.25rem 0; background: none !important; }
  .lang-link { align-self: flex-start; margin-top: 1rem; }
  .hero-grid, .split, .detail, .contact-grid, .equipment, .certs { grid-template-columns: 1fr; }
  .title-block { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .title-block div:nth-child(3) { border-left: 0; }
  .title-block div:nth-child(n + 3) { border-top: 1px solid var(--navy-900); }
  .tile-grid, .tile-grid.three { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .goals { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .goals li:nth-child(3) { border-left: 0; }
  .goals li:nth-child(n + 3) { border-top: 1px solid var(--navy-900); }
  .inspection { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .rows > li { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .brand-name span { display: none; }
  .steps { grid-template-columns: 1fr 1fr; row-gap: 1.25rem; }
  .spec div { grid-template-columns: 6.5rem minmax(0, 1fr); gap: 0.75rem; }
  .info-table th { width: 6.5rem; padding-left: 0.75rem; }
  .info-table td { padding-left: 0.875rem; }
  .history-year { grid-template-columns: 1fr; gap: 0.5rem; }
  .org-staff { position: static; margin-left: 1rem; }
  .org-staff::before { display: none; }
  .org-top { gap: 0.5rem; flex-wrap: wrap; padding-bottom: 1.5rem; }
  .org-top::after { display: none; }
  .org-row { grid-template-columns: 1fr 1fr; padding-top: 1.5rem; }
  .org-row::before, .org-row li::before { display: none; }
  .cert-mini { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: repeat(2, auto); }
  .callout { font-size: 0.75rem; }
}