:root {
  --orange: #ff761f;
  --orange-dark: #e85e11;
  --charcoal: #303234;
  --charcoal-2: #242628;
  --ink: #24272b;
  --muted: #777b82;
  --line: #dedede;
  --soft: #f6f6f6;
  --white: #ffffff;
  --max: 1040px;
  --shadow: 0 18px 50px rgba(22, 28, 34, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont,
    "Noto Sans KR", "Malgun Gothic", "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  word-break: keep-all;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }

.container {
  width: min(var(--max), calc(100% - 44px));
  margin-inline: auto;
}
.container--wide {
  width: min(1240px, calc(100% - 44px));
  margin-inline: auto;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Header */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  height: 72px;
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,.2);
  background: rgba(34, 37, 40, .36);
  backdrop-filter: blur(5px);
  transition: background .25s ease, box-shadow .25s ease;
}
.site-header.scrolled,
.site-header.menu-visible {
  background: rgba(42, 44, 47, .97);
  box-shadow: 0 8px 25px rgba(0,0,0,.12);
}
.header-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 260px;
  color: #fff;
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -.045em;
  white-space: nowrap;
}
.brand img {
  width: 30px;
  height: 42px;
  object-fit: contain;
  flex: 0 0 auto;
}
.primary-nav {
  display: flex;
  align-items: center;
  gap: 52px;
  font-weight: 700;
  font-size: 15px;
}
.primary-nav a {
  position: relative;
  padding: 25px 0 23px;
  color: rgba(255,255,255,.92);
}
.primary-nav a::after {
  content: "";
  position: absolute;
  left: 50%;
  right: 50%;
  bottom: 0;
  height: 2px;
  background: var(--orange);
  transition: left .2s ease, right .2s ease;
}
.primary-nav a:hover::after,
.primary-nav a.active::after { left: 0; right: 0; }
.primary-nav a:hover,
.primary-nav a.active { color: #fff; }
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  color: #fff;
}
.menu-toggle span,
.menu-toggle::before,
.menu-toggle::after {
  content: "";
  display: block;
  width: 24px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
  transition: transform .2s ease, opacity .2s ease;
}
.menu-toggle[aria-expanded="true"] span { opacity: 0; }
.menu-toggle[aria-expanded="true"]::before { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"]::after { transform: translateY(-7px) rotate(-45deg); }

/* Hero */
.hero,
.subhero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  color: #fff;
  background: #5c6268;
}
.hero { min-height: 610px; display: grid; align-items: center; }
.subhero { min-height: 285px; display: grid; align-items: center; padding-top: 72px; }
.hero-media,
.subhero-media {
  position: absolute;
  inset: -5%;
  z-index: -3;
  overflow: hidden;
}
.hero-media img,
.subhero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  animation: slowMove 18s ease-in-out infinite alternate;
  will-change: transform;
}
.hero::before,
.subhero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
}
.hero::before {
  background: linear-gradient(90deg, rgba(24,29,34,.76) 0%, rgba(35,39,44,.47) 48%, rgba(29,33,37,.3) 100%);
}
.subhero::before { background: rgba(44, 48, 52, .57); }
.hero::after,
.subhero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(0,0,0,.08), rgba(0,0,0,.13));
}
@keyframes slowMove {
  0% { transform: scale(1.035) translate3d(-.4%, -.3%, 0); }
  100% { transform: scale(1.09) translate3d(1.2%, .7%, 0); }
}
.hero-content {
  width: min(1120px, calc(100% - 44px));
  margin-inline: auto;
  padding-top: 72px;
}
.hero-copy { max-width: 670px; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.hero-kicker::before {
  content: "";
  width: 34px;
  height: 2px;
  background: var(--orange);
}
.hero h1 {
  margin: 18px 0 16px;
  max-width: 650px;
  font-size: clamp(40px, 5vw, 64px);
  line-height: 1.18;
  letter-spacing: -.055em;
  text-shadow: 0 2px 18px rgba(0,0,0,.16);
}
.hero p {
  margin: 0;
  max-width: 620px;
  color: rgba(255,255,255,.88);
  font-size: 18px;
  line-height: 1.9;
}
.hero-actions { display: flex; gap: 12px; margin-top: 34px; flex-wrap: wrap; }
.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 25px;
  border: 1px solid transparent;
  border-radius: 2px;
  background: var(--orange);
  color: #fff;
  font-weight: 800;
  transition: transform .18s ease, background .18s ease, border-color .18s ease;
}
.button:hover { transform: translateY(-2px); background: var(--orange-dark); }
.button--outline { border-color: rgba(255,255,255,.65); background: rgba(255,255,255,.04); }
.button--outline:hover { background: rgba(255,255,255,.15); }
.hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  color: rgba(255,255,255,.7);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
}
.hero-scroll::after {
  content: "";
  display: block;
  width: 1px;
  height: 30px;
  margin: 8px auto 0;
  background: rgba(255,255,255,.6);
}
.subhero-content { text-align: center; padding: 54px 20px 48px; }
.subhero h1 {
  margin: 0 0 6px;
  font-size: 36px;
  line-height: 1.2;
  letter-spacing: -.03em;
}
.subhero p { margin: 0; color: rgba(255,255,255,.88); font-size: 14px; }

/* Sub navigation */
.subnav {
  position: relative;
  z-index: 10;
  background: #fff;
  border-bottom: 1px solid var(--line);
}
.subnav-list {
  display: grid;
  grid-template-columns: repeat(var(--tabs, 3), minmax(0, 1fr));
  width: min(520px, 100%);
  margin: 0 auto;
}
.subnav a {
  position: relative;
  display: flex;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  color: #858585;
  font-weight: 600;
  font-size: 14px;
}
.subnav a + a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 1px;
  height: 18px;
  background: #ddd;
}
.subnav a.active { color: #222; }
.subnav a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: #303030;
}

/* General sections */
.section { padding: 82px 0; }
.section--soft { background: var(--soft); }
.section-title {
  margin: 0 0 40px;
  text-align: center;
  font-size: 32px;
  line-height: 1.25;
  letter-spacing: -.04em;
}
.section-title small {
  display: block;
  margin-bottom: 8px;
  color: var(--orange);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .13em;
  text-transform: uppercase;
}
.lead {
  margin: 0 auto;
  max-width: 780px;
  color: #5f6369;
  text-align: center;
  font-size: 17px;
  line-height: 1.95;
}
.center { text-align: center; }
.orange { color: var(--orange); }

/* Main home */
.business-intro {
  display: grid;
  grid-template-columns: .75fr 1.25fr;
  gap: 70px;
  align-items: start;
  margin-bottom: 42px;
}
.business-intro h2 {
  margin: 0;
  font-size: 42px;
  line-height: 1.15;
  letter-spacing: -.045em;
}
.business-intro p { margin: 0; color: #686c73; line-height: 2; }
.service-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 28px; }
.service-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 320px;
  overflow: hidden;
  border: 1px solid #ddd;
  background: #fff;
  box-shadow: 0 12px 30px rgba(21,26,31,.06);
}
.service-card-media { min-height: 300px; background: #eef1f3; overflow: hidden; }
.service-card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.service-card:hover .service-card-media img { transform: scale(1.04); }
.service-card-body { padding: 38px 32px; display: flex; flex-direction: column; justify-content: center; }
.service-card h3 { margin: 0 0 12px; font-size: 25px; letter-spacing: -.035em; }
.service-card p { margin: 0; color: #666b72; font-size: 15px; }
.text-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 22px; color: var(--orange-dark); font-weight: 800; }
.text-link::after { content: "→"; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(4px); }
.notice-layout { display: grid; grid-template-columns: 310px 1fr; gap: 70px; align-items: start; }
.notice-title h2 { margin: 0; font-size: 38px; line-height: 1.25; letter-spacing: -.045em; }
.notice-title p { color: #74787e; }
.notice-list { border-top: 2px solid #353535; }
.notice-item {
  display: grid;
  grid-template-columns: 84px 1fr 100px;
  gap: 18px;
  align-items: center;
  min-height: 68px;
  border-bottom: 1px solid #e0e0e0;
  font-size: 14px;
}
.notice-item .num { color: #aaa; text-align: center; }
.notice-item .date { color: #888; text-align: right; }
.notice-item a { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.notice-item a:hover { color: var(--orange-dark); }

/* Company */
.company-visual {
  position: relative;
  width: min(850px, 100%);
  height: 280px;
  margin: 0 auto 35px;
  overflow: hidden;
  border: 14px solid #6f7478;
  box-shadow: var(--shadow);
}
.company-visual::before {
  content: "";
  position: absolute;
  inset: 10px;
  z-index: 2;
  border: 1px solid rgba(255,255,255,.75);
  pointer-events: none;
}
.company-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  animation: slowMove 20s ease-in-out infinite alternate;
}
.company-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(35,39,42,.38);
}
.company-visual-copy {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: grid;
  place-content: center;
  text-align: center;
  color: #fff;
}
.company-visual-copy img { width: 46px; height: 64px; object-fit: contain; margin: 0 auto 8px; animation: none; }
.company-visual-copy strong { font-size: 29px; line-height: 1.3; letter-spacing: -.045em; }
.company-visual-copy span { font-size: 14px; color: rgba(255,255,255,.88); }
.company-description { max-width: 760px; margin: 0 auto 35px; text-align: center; font-size: 16px; line-height: 1.9; }
.timeline { width: min(800px, 100%); margin: 45px auto 0; }
.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 115px 1fr;
  gap: 25px;
  min-height: 78px;
  padding-left: 28px;
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--orange);
}
.timeline-item::after {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 11px;
  height: 11px;
  border: 3px solid var(--orange);
  border-radius: 50%;
  background: #fff;
}
.timeline-year { padding-top: 6px; font-size: 26px; font-weight: 800; color: #3a3d42; }
.timeline-body { padding: 7px 0 24px; font-size: 14px; }
.timeline-body p { margin: 0 0 5px; }
.timeline-body b { margin-right: 8px; }

/* Greeting */
.greeting-grid {
  display: grid;
  grid-template-columns: 330px 1fr;
  gap: 62px;
  align-items: start;
  max-width: 920px;
  margin: 0 auto;
}
.greeting-photo { position: relative; }
.greeting-photo::before {
  content: "";
  position: absolute;
  left: -14px;
  top: 16px;
  width: 100%;
  height: 100%;
  border: 2px solid var(--orange);
  z-index: -1;
}
.greeting-photo img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; object-position: center top; }
.greeting-copy h2 { margin: 0 0 24px; font-size: 30px; line-height: 1.45; letter-spacing: -.04em; }
.greeting-copy p { color: #555a60; margin: 0 0 16px; }
.signature { margin-top: 34px; text-align: right; font-weight: 700; }
.signature strong { display: block; margin-top: 8px; font-size: 21px; }

/* Location and contact */
.map-frame {
  position: relative;
  height: 530px;
  overflow: hidden;
  border: 1px solid #d7d7d7;
  background: #eee;
  box-shadow: 0 10px 28px rgba(0,0,0,.06);
}
.map-frame iframe { width: 100%; height: 100%; border: 0; }
.location-info {
  display: grid;
  grid-template-columns: 1.3fr .7fr .9fr;
  border: 1px solid #ddd;
  border-top: 0;
}
.location-info > div { padding: 25px 28px; }
.location-info > div + div { border-left: 1px solid #ddd; }
.location-label { display: block; color: var(--orange-dark); font-size: 12px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.location-info strong { display: block; margin-top: 5px; font-size: 15px; }
.map-actions { margin-top: 18px; display: flex; justify-content: flex-end; }
.button--dark { background: var(--charcoal); }
.button--dark:hover { background: #161718; }
.contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 56px; align-items: start; }
.contact-panel { background: #f4f4f4; padding: 38px; }
.contact-panel h2 { margin: 0 0 18px; font-size: 28px; }
.contact-panel dl { margin: 28px 0 0; }
.contact-panel dt { margin-top: 18px; color: var(--orange-dark); font-weight: 800; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; }
.contact-panel dd { margin: 4px 0 0; color: #50545a; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: grid; gap: 7px; }
.field--full { grid-column: 1 / -1; }
.field label { font-weight: 700; font-size: 14px; }
.field input,
.field textarea,
.field select {
  width: 100%;
  border: 1px solid #d7d7d7;
  border-radius: 0;
  background: #fff;
  padding: 13px 14px;
  color: #222;
  outline: none;
}
.field input:focus,
.field textarea:focus,
.field select:focus { border-color: var(--orange); box-shadow: 0 0 0 3px rgba(255,118,31,.12); }
.field textarea { min-height: 190px; resize: vertical; }
.check-row { display: flex; gap: 9px; align-items: flex-start; margin: 18px 0; color: #64676c; font-size: 13px; }
.check-row input { margin-top: 5px; }
.form-note { color: #888; font-size: 12px; margin: 10px 0 0; }

/* R&D */
.rnd-intro {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 52px;
  align-items: center;
  margin-bottom: 70px;
}
.rnd-intro h2 { margin: 0 0 16px; font-size: 34px; line-height: 1.35; letter-spacing: -.045em; }
.rnd-intro p { color: #60656b; }
.rnd-intro img { width: 100%; height: 350px; object-fit: cover; box-shadow: var(--shadow); }
.rnd-block { padding: 60px 0; border-top: 1px solid #e3e3e3; }
.rnd-block:first-of-type { border-top: 0; }
.rnd-heading { display: grid; grid-template-columns: 210px 1fr; gap: 48px; align-items: start; margin-bottom: 34px; }
.rnd-heading .index { color: var(--orange); font-size: 13px; font-weight: 800; letter-spacing: .14em; }
.rnd-heading h3 { margin: 0 0 10px; font-size: 30px; letter-spacing: -.04em; }
.rnd-heading p { margin: 0; color: #666b72; }
.rnd-media-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.figure-card { margin: 0; border: 1px solid #ddd; background: #fff; padding: 22px; }
.figure-card img { width: 100%; height: 300px; object-fit: contain; background: #fff; }
.figure-card figcaption { margin-top: 14px; color: #62666c; font-size: 13px; text-align: center; }

/* Patents */
.patent-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 30px; }
.patent-card { border: 1px solid #ddd; background: #fff; }
.patent-preview {
  width: 100%;
  height: 470px;
  padding: 24px;
  border: 0;
  background: #f7f7f7;
  overflow: hidden;
}
.patent-preview img { width: 100%; height: 100%; object-fit: contain; }
.patent-body { padding: 25px; }
.patent-body h3 { margin: 0 0 10px; font-size: 19px; line-height: 1.55; letter-spacing: -.025em; }
.patent-body p { margin: 0; color: #777; font-size: 13px; }
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 40px;
  background: rgba(0,0,0,.82);
}
.lightbox.open { display: flex; }
.lightbox img { max-width: min(950px, 95vw); max-height: 90vh; background: #fff; }
.lightbox-close { position: absolute; top: 22px; right: 24px; width: 46px; height: 46px; border: 1px solid rgba(255,255,255,.6); border-radius: 50%; background: transparent; color: #fff; font-size: 28px; }

/* Boards */
.board-toolbar { display: flex; justify-content: flex-end; gap: 8px; margin-bottom: 18px; }
.board-toolbar select,
.board-toolbar input { min-height: 40px; border: 1px solid #ddd; padding: 0 12px; }
.board { border-top: 2px solid #333; }
.board-row {
  display: grid;
  grid-template-columns: 90px 1fr 130px;
  gap: 20px;
  align-items: center;
  min-height: 66px;
  border-bottom: 1px solid #ddd;
  font-size: 14px;
}
.board-row .board-num { text-align: center; color: #aaa; }
.board-row .board-date { text-align: center; color: #888; }
.board-row a:hover { color: var(--orange-dark); }
.empty-state { padding: 65px 20px; text-align: center; color: #888; border-bottom: 1px solid #ddd; }

/* Footer */
.site-footer { background: #303030; color: #fff; }
.footer-links { display: grid; grid-template-columns: repeat(4, 1fr); max-width: 900px; margin: 0 auto; }
.footer-col { min-height: 150px; padding: 25px 45px; border-left: 1px solid #505050; }
.footer-col:last-child { border-right: 1px solid #505050; }
.footer-col h3 { margin: 0 0 8px; font-size: 15px; }
.footer-col a { display: block; color: #d1d1d1; font-size: 12px; line-height: 2; }
.footer-col a:hover { color: var(--orange); }
.footer-bottom { border-top: 1px solid #464646; padding: 24px 0 30px; }
.footer-bottom-inner { display: flex; gap: 26px; align-items: center; justify-content: space-between; }
.footer-brand { display: inline-flex; align-items: center; gap: 10px; color: #fff; font-weight: 800; white-space: nowrap; }
.footer-brand img { width: 24px; height: 34px; object-fit: contain; }
.footer-meta { color: #aaa; font-size: 11px; line-height: 1.7; text-align: right; }
.top-button {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 900;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 0;
  background: rgba(42,44,46,.9);
  color: #fff;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
}
.top-button.show { opacity: 1; pointer-events: auto; }
.top-button:hover { transform: translateY(-3px); }

/* 404 */
.not-found { min-height: 70vh; display: grid; place-items: center; padding: 120px 20px 60px; text-align: center; }
.not-found strong { display: block; color: var(--orange); font-size: 70px; line-height: 1; }
.not-found h1 { margin: 20px 0 8px; }

@media (max-width: 980px) {
  .primary-nav { gap: 28px; }
  .business-intro { grid-template-columns: 1fr; gap: 22px; }
  .service-card { grid-template-columns: 1fr; }
  .service-card-media { min-height: 250px; }
  .notice-layout { grid-template-columns: 1fr; gap: 28px; }
  .greeting-grid { grid-template-columns: 270px 1fr; gap: 42px; }
  .rnd-intro { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  body { font-size: 15px; }
  .site-header, .header-inner { height: 64px; }
  .brand { min-width: 0; font-size: 18px; }
  .brand img { width: 25px; height: 36px; }
  .menu-toggle { display: block; }
  .primary-nav {
    position: fixed;
    left: 0;
    right: 0;
    top: 64px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 22px 24px;
    background: rgba(42,44,47,.98);
    border-top: 1px solid rgba(255,255,255,.12);
    box-shadow: 0 18px 30px rgba(0,0,0,.2);
  }
  .primary-nav.open { display: flex; }
  .primary-nav a { padding: 15px 2px; border-bottom: 1px solid rgba(255,255,255,.1); }
  .primary-nav a::after { display: none; }
  .hero { min-height: 570px; }
  .hero-content { padding-top: 64px; }
  .hero h1 { font-size: 42px; }
  .hero p { font-size: 16px; }
  .subhero { min-height: 245px; padding-top: 64px; }
  .subhero h1 { font-size: 31px; }
  .subnav-list { width: 100%; }
  .subnav a { min-height: 50px; font-size: 13px; }
  .section { padding: 62px 0; }
  .section-title { font-size: 28px; margin-bottom: 30px; }
  .business-intro h2 { font-size: 34px; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 0; }
  .notice-item { grid-template-columns: 50px 1fr; }
  .notice-item .date { display: none; }
  .company-visual { height: 230px; border-width: 8px; }
  .company-visual-copy strong { font-size: 24px; }
  .timeline-item { grid-template-columns: 82px 1fr; gap: 10px; padding-left: 24px; }
  .timeline-year { font-size: 22px; }
  .greeting-grid { grid-template-columns: 1fr; }
  .greeting-photo { width: min(320px, 90%); margin: 0 auto; }
  .location-info { grid-template-columns: 1fr; }
  .location-info > div + div { border-left: 0; border-top: 1px solid #ddd; }
  .map-frame { height: 420px; }
  .form-grid { grid-template-columns: 1fr; }
  .field--full { grid-column: auto; }
  .rnd-heading { grid-template-columns: 1fr; gap: 7px; }
  .rnd-media-grid, .patent-grid { grid-template-columns: 1fr; }
  .patent-preview { height: 420px; }
  .board-row { grid-template-columns: 55px 1fr; }
  .board-row .board-date { display: none; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
  .footer-col { min-height: auto; padding: 24px; border-bottom: 1px solid #505050; }
  .footer-col:nth-child(2n) { border-right: 1px solid #505050; }
  .footer-bottom-inner { display: block; }
  .footer-meta { margin-top: 14px; text-align: left; }
}

@media (max-width: 480px) {
  .container, .container--wide { width: min(100% - 28px, var(--max)); }
  .brand { font-size: 17px; }
  .hero h1 { font-size: 36px; }
  .hero-actions .button { width: 100%; }
  .subnav a { font-size: 12px; }
  .service-card-body { padding: 28px 24px; }
  .company-visual { height: 205px; }
  .company-description { text-align: left; }
  .contact-panel { padding: 28px 22px; }
  .footer-links { grid-template-columns: 1fr 1fr; }
  .footer-col { padding: 20px 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}


/* v5 content updates */
.service-grid--three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.service-card--vertical { display: flex; flex-direction: column; min-height: 100%; }
.service-card--vertical .service-card-media { height: 235px; min-height: 235px; }
.service-card--vertical .service-card-body { flex: 1; padding: 30px 28px 32px; }
.service-card-media--diagram { background: #f7f8fa; }
.service-card-media--diagram img { object-fit: contain; padding: 20px; }
.service-index { color: var(--orange); font-size: 12px; font-weight: 900; letter-spacing: .13em; margin-bottom: 8px; }
.timeline-body a { transition: color .2s ease; }
.timeline-body a:hover { color: var(--orange-dark); }
.greeting-grid--profile { max-width: 1040px; grid-template-columns: 360px 1fr; }
.greeting-photo--director img { aspect-ratio: 2 / 3; object-fit: cover; object-position: center top; }
.greeting-lead { color: #25282c !important; font-weight: 800; font-size: 18px; }
.career-card { margin-top: 40px; padding: 26px 28px; border-top: 2px solid #333; background: #f7f7f7; }
.career-card h3 { margin: 0 0 15px; font-size: 20px; }
.career-card ul { list-style: none; padding: 0; margin: 0; }
.career-card li { display: grid; grid-template-columns: 100px 1fr; gap: 14px; padding: 9px 0; border-top: 1px solid #ddd; }
.career-card li:first-child { border-top: 0; }
.career-card li span { color: var(--orange-dark); font-size: 12px; font-weight: 800; }
.career-card li strong { font-size: 13px; font-weight: 650; line-height: 1.55; }
.map-preview { position: relative; display: block; overflow: hidden; min-height: 360px; border: 1px solid #d7d7d7; background: #eef1f2; box-shadow: 0 10px 28px rgba(0,0,0,.06); }
.map-preview img { width: 100%; height: 100%; min-height: 360px; object-fit: cover; transform: scale(1.01); transition: transform .45s ease; }
.map-preview:hover img { transform: scale(1.035); }
.map-preview::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,.36), transparent 45%); pointer-events: none; }
.map-pin { position: absolute; z-index: 2; left: 50%; top: 47%; width: 26px; height: 34px; transform: translate(-50%,-50%); border-radius: 50% 50% 50% 0; background: #2c7be5; rotate: -45deg; box-shadow: 0 8px 18px rgba(0,0,0,.25); }
.map-pin::after { content: ''; position: absolute; width: 9px; height: 9px; left: 8px; top: 8px; border-radius: 50%; background: #fff; }
.map-preview-cta { position: absolute; z-index: 3; right: 20px; bottom: 18px; display: inline-flex; align-items: center; gap: 8px; padding: 10px 14px; background: rgba(255,255,255,.93); color: #202326; font-size: 13px; font-weight: 800; box-shadow: 0 8px 22px rgba(0,0,0,.15); }
.button--kakao { background: #fee500; color: #191919; }
.button--kakao:hover { background: #f4dc00; }
.publication-section { margin-top: 34px; padding-top: 28px; border-top: 1px dashed #d8d8d8; }
.publication-title { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; margin-bottom: 18px; }
.publication-title span { color: var(--orange-dark); font-size: 11px; font-weight: 900; letter-spacing: .14em; text-transform: uppercase; }
.publication-title h4 { margin: 0; font-size: 21px; }
.publication-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.publication-grid--single { grid-template-columns: 1fr; }
.publication-card { display: grid; grid-template-columns: 86px 1fr; gap: 20px; min-height: 210px; padding: 22px; border: 1px solid #ddd; background: #fff; transition: transform .22s ease, box-shadow .22s ease; }
.publication-card:hover { transform: translateY(-3px); box-shadow: 0 14px 34px rgba(20,25,30,.08); }
.publication-mark { display: flex; flex-direction: column; justify-content: space-between; min-height: 164px; padding: 15px 12px; background: #303234; color: #fff; }
.publication-mark strong { font-size: 20px; line-height: 1.05; letter-spacing: -.02em; }
.publication-mark span { color: #ffb680; font-size: 12px; font-weight: 800; }
.publication-card--accepted .publication-mark { background: linear-gradient(145deg,#202326,#50545a); }
.publication-copy { min-width: 0; }
.publication-copy h4 { margin: 8px 0 10px; font-size: 16px; line-height: 1.45; letter-spacing: -.015em; word-break: normal; }
.publication-copy p { margin: 0; color: #666b72; font-size: 13px; line-height: 1.65; }
.publication-link { display: inline-flex; gap: 6px; align-items: center; margin-top: 14px; color: var(--orange-dark); font-size: 13px; font-weight: 800; }
.publication-link--button { padding: 0; border: 0; background: transparent; }
.status-badge, .ip-badge { display: inline-block; padding: 4px 8px; background: #fff0e6; color: #cf520a; font-size: 10px; font-weight: 900; letter-spacing: .04em; }
.ip-badge--registered { background: #eaf6ef; color: #197346; }
.ip-badge--trademark { background: #eef3ff; color: #345bb6; }
.ip-meta { margin: 14px 0; border-top: 1px solid #e5e5e5; }
.ip-meta > div { display: grid; grid-template-columns: 80px 1fr; gap: 10px; padding: 8px 0; border-bottom: 1px solid #ececec; }
.ip-meta dt { color: #888; font-size: 11px; font-weight: 800; }
.ip-meta dd { margin: 0; font-size: 12px; font-weight: 700; }
.board-category { display: inline-block; width: 72px; margin-right: 12px; color: var(--orange-dark); font-size: 11px; font-weight: 900; }
.button--small { min-height: 40px; padding: 0 18px; }
.notice-detail { max-width: 850px; margin: 0 auto; }
.notice-detail-head { padding-bottom: 24px; border-bottom: 2px solid #333; }
.notice-detail-category { display: inline-block; margin-bottom: 13px; color: var(--orange-dark); font-size: 12px; font-weight: 900; letter-spacing: .08em; }
.notice-detail-head h2 { margin: 0 0 12px; font-size: 32px; line-height: 1.4; letter-spacing: -.04em; }
.notice-detail-head time { color: #888; font-size: 13px; }
.notice-detail-lead { margin: 32px 0 18px; font-size: 18px; font-weight: 800; color: #303338; }
.notice-detail > p:not(.notice-detail-lead) { color: #5c6066; }
.notice-detail-meta { margin: 34px 0; border-top: 1px solid #ddd; }
.notice-detail-meta > div { display: grid; grid-template-columns: 150px 1fr; border-bottom: 1px solid #ddd; }
.notice-detail-meta dt, .notice-detail-meta dd { margin: 0; padding: 13px 16px; }
.notice-detail-meta dt { background: #f6f6f6; font-weight: 800; font-size: 13px; }
.notice-detail-meta dd { font-size: 14px; }
.notice-detail-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 34px; }
.button--ghost { color: #333; background: #fff; border: 1px solid #ccc; }
.button--ghost:hover { background: #f5f5f5; }
.section-title--left { text-align: left; margin-bottom: 28px; }

@media (max-width: 980px) {
  .service-grid--three { grid-template-columns: 1fr; }
  .service-card--vertical { display: grid; grid-template-columns: 1fr 1fr; }
  .service-card--vertical .service-card-media { height: auto; min-height: 260px; }
  .greeting-grid--profile { grid-template-columns: 310px 1fr; }
  .publication-grid { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .service-card--vertical { grid-template-columns: 1fr; }
  .greeting-grid--profile { grid-template-columns: 1fr; }
  .career-card li { grid-template-columns: 80px 1fr; }
  .publication-title { display: block; }
  .publication-title h4 { margin-top: 6px; }
  .publication-card { grid-template-columns: 70px 1fr; gap: 14px; padding: 17px; }
  .publication-mark { min-height: 150px; padding: 12px 9px; }
  .publication-mark strong { font-size: 17px; }
  .map-preview, .map-preview img { min-height: 300px; }
  .notice-detail-head h2 { font-size: 27px; }
  .notice-detail-meta > div { grid-template-columns: 105px 1fr; }
  .notice-detail-actions { flex-direction: column; }
  .notice-detail-actions .button { width: 100%; }
  .board-category { display: block; width: auto; margin: 0 0 2px; }
}
@media (max-width: 480px) {
  .career-card { padding: 22px 18px; }
  .career-card li { grid-template-columns: 1fr; gap: 2px; }
  .publication-card { grid-template-columns: 1fr; }
  .publication-mark { min-height: auto; flex-direction: row; align-items: end; }
  .map-preview, .map-preview img { min-height: 245px; }
}

/* v6 detailed content and publication figures */
.service-card--vertical .service-card-body h3 {
  font-size: 19px;
  line-height: 1.5;
  word-break: keep-all;
}
.company-visual img { object-position: center 42%; }

.google-map-frame {
  overflow: hidden;
  width: 100%;
  min-height: 430px;
  border: 1px solid #d6d9dc;
  background: #eef1f3;
  box-shadow: 0 12px 34px rgba(0,0,0,.07);
}
.google-map-frame iframe {
  display: block;
  width: 100%;
  height: 430px;
  border: 0;
}
.button--google { background: #3c4043; }
.button--google:hover { background: #202124; }

.technology-patent {
  display: grid;
  grid-template-columns: minmax(240px, 330px) 1fr;
  gap: 28px;
  align-items: center;
  margin: 0 0 30px;
  padding: 25px;
  border: 1px solid #d9d9d9;
  border-left: 4px solid var(--orange);
  background: #f8f8f8;
}
.technology-patent button,
.publication-data button {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: #fff;
  cursor: zoom-in;
}
.technology-patent img {
  width: 100%;
  height: 220px;
  object-fit: contain;
  background: #fff;
}
.technology-patent figcaption { margin: 0; }
.technology-patent figcaption b {
  display: block;
  margin-bottom: 10px;
  color: var(--orange-dark);
  font-size: 13px;
  letter-spacing: .03em;
}
.technology-patent figcaption span {
  display: block;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.65;
  letter-spacing: -.02em;
}

.publication-grid--feature { grid-template-columns: 1fr; gap: 26px; }
.publication-feature {
  display: grid;
  grid-template-columns: minmax(330px, 46%) 1fr;
  gap: 28px;
  padding: 24px;
  border: 1px solid #dadde0;
  background: #fff;
  box-shadow: 0 10px 30px rgba(24,29,34,.055);
  transition: transform .22s ease, box-shadow .22s ease;
}
.publication-feature:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 38px rgba(24,29,34,.09);
}
.publication-data {
  align-self: start;
  margin: 0;
  border: 1px solid #e1e1e1;
  background: #fff;
}
.publication-data img {
  width: 100%;
  height: 300px;
  object-fit: contain;
  background: #fff;
}
.publication-data--diagram img { height: 320px; padding: 12px; }
.publication-data figcaption {
  padding: 11px 13px;
  border-top: 1px solid #e5e5e5;
  color: #666c72;
  background: #f8f8f8;
  font-size: 11px;
  line-height: 1.55;
}
.publication-detail { min-width: 0; }
.publication-head {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 17px;
}
.publication-head .publication-mark {
  width: 90px;
  min-height: 84px;
  flex: 0 0 90px;
}
.journal-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(110px, 1fr));
  gap: 8px;
  align-self: center;
}
.journal-metrics span {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 64px;
  padding: 9px 13px;
  border: 1px solid #e0e0e0;
  background: #f7f7f7;
  color: #6a6e73;
  font-size: 11px;
  font-weight: 700;
  text-align: center;
}
.journal-metrics b {
  color: #202326;
  font-size: 20px;
  line-height: 1.2;
}
.publication-detail h4 {
  margin: 0 0 12px;
  font-size: 18px;
  line-height: 1.55;
  letter-spacing: -.015em;
  word-break: normal;
}
.publication-detail p {
  margin: 0;
  color: #62676e;
  font-size: 14px;
  line-height: 1.75;
}
.publication-meta {
  margin-top: 14px;
  color: #8a8e93;
  font-size: 12px;
  font-weight: 700;
}
.publication-feature--accepted { border-top: 3px solid #25282c; }
.metrics-note {
  margin: 32px 0 0;
  color: #858a90;
  font-size: 11px;
  text-align: right;
}

.ip-single-intro {
  max-width: 820px;
  margin: 0 auto 32px;
  padding: 28px 30px;
  border-left: 4px solid var(--orange);
  background: #f7f7f7;
}
.ip-single-intro > span {
  color: var(--orange-dark);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .13em;
  text-transform: uppercase;
}
.ip-single-intro h3 { margin: 7px 0 9px; font-size: 25px; }
.ip-single-intro p { margin: 0; color: #666b72; }
.patent-grid--single {
  grid-template-columns: minmax(0, 760px);
  justify-content: center;
}
.patent-grid--single .patent-preview { height: 510px; }

.board-empty {
  display: grid;
  place-items: center;
  min-height: 290px;
  padding: 50px 24px;
  border-top: 2px solid #333;
  border-bottom: 1px solid #ddd;
  text-align: center;
}
.board-empty span {
  color: var(--orange-dark);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: .15em;
  text-transform: uppercase;
}
.board-empty strong { margin-top: 14px; font-size: 21px; }
.board-empty p { margin: 4px 0 0; color: #898d91; font-size: 13px; }

@media (max-width: 980px) {
  .publication-feature { grid-template-columns: 1fr; }
  .publication-data img { height: auto; max-height: 520px; }
  .technology-patent { grid-template-columns: 260px 1fr; }
}
@media (max-width: 760px) {
  .google-map-frame, .google-map-frame iframe { min-height: 330px; height: 330px; }
  .technology-patent { grid-template-columns: 1fr; padding: 18px; }
  .technology-patent img { height: 270px; }
  .publication-feature { padding: 16px; gap: 18px; }
  .publication-head { display: grid; grid-template-columns: 78px 1fr; }
  .publication-head .publication-mark { width: 78px; min-height: 76px; flex-basis: 78px; }
  .journal-metrics { grid-template-columns: 1fr 1fr; }
  .journal-metrics span { min-height: 56px; padding: 7px; }
  .journal-metrics b { font-size: 17px; }
  .publication-detail h4 { font-size: 16px; }
  .patent-grid--single .patent-preview { height: 410px; }
}
@media (max-width: 480px) {
  .technology-patent img { height: 225px; }
  .publication-head { grid-template-columns: 1fr; }
  .publication-head .publication-mark { width: 100%; min-height: auto; flex-direction: row; }
  .journal-metrics { width: 100%; }
  .publication-data--diagram img { height: 235px; }
  .patent-grid--single .patent-preview { height: 340px; }
}