:root {
  --orange: #f15a24;
  --orange-dark: #cf4212;
  --ivory: #f7f3ed;
  --paper: #fffdf9;
  --ink: #111111;
  --charcoal: #191919;
  --muted: #69655f;
  --line: #ded9d1;
  --white: #ffffff;
  --max: 1240px;
  --pad: clamp(1.25rem, 4vw, 4rem);
  --section: clamp(5.5rem, 10vw, 10rem);
  --display: clamp(3.1rem, 8.2vw, 8.6rem);
  --h1: clamp(3rem, 6.3vw, 6.5rem);
  --h2: clamp(2.3rem, 4.8vw, 5rem);
  --h3: clamp(1.45rem, 2.2vw, 2.25rem);
  --radius: 999px;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--ivory);
  color: var(--ink);
  font-family: Inter, "Helvetica Neue", Arial, "Noto Sans KR", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
body.menu-open {
  overflow: hidden;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  display: block;
  max-width: 100%;
}
button,
input,
textarea,
select {
  font: inherit;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: 4px;
}
.skip-link {
  position: fixed;
  z-index: 1000;
  top: -5rem;
  left: 1rem;
  padding: 0.7rem 1rem;
  background: var(--ink);
  color: white;
}
.skip-link:focus {
  top: 1rem;
}
.container {
  width: min(100%, calc(var(--max) + var(--pad) * 2));
  margin-inline: auto;
  padding-inline: var(--pad);
}
.section {
  padding-block: var(--section);
}
.section--tight {
  padding-block: clamp(4rem, 7vw, 7rem);
}
.section--white {
  background: var(--paper);
}
.section--dark {
  background: var(--charcoal);
  color: var(--white);
}
.eyebrow {
  margin: 0 0 1.4rem;
  color: var(--orange);
  font-size: 1.5rem;
  font-weight: 750;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.display,
h1,
h2,
h3,
p {
  margin-top: 0;
}
.display {
  max-width: 1100px;
  margin-bottom: 2rem;
  font-size: var(--display);
  font-weight: 560;
  letter-spacing: -0.07em;
  line-height: 0.91;
}
h1 {
  max-width: 1080px;
  margin-bottom: 2rem;
  font-size: var(--h1);
  font-weight: 570;
  letter-spacing: -0.06em;
  line-height: 0.98;
}
h2 {
  max-width: 900px;
  margin-bottom: 2rem;
  font-size: var(--h2);
  font-weight: 550;
  letter-spacing: -0.055em;
  line-height: 1.02;
}
h3 {
  margin-bottom: 1rem;
  font-size: var(--h3);
  font-weight: 570;
  letter-spacing: -0.035em;
  line-height: 1.14;
}
.lead {
  max-width: 770px;
  color: var(--muted);
  font-size: clamp(1.1rem, 1.6vw, 1.38rem);
  line-height: 1.6;
}
.section--dark .lead,
.dark-page .lead {
  color: #b9b6b0;
}
.kicker {
  max-width: 770px;
  font-size: clamp(1.35rem, 2.4vw, 2rem);
  line-height: 1.4;
}
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2.4rem;
}
.button {
  display: inline-flex;
  min-height: 3.25rem;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.75rem 1.35rem;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  background: transparent;
  color: var(--ink);
  font-size: 0.87rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition:
    background 0.25s,
    color 0.25s,
    border-color 0.25s,
    transform 0.25s;
}
.button:hover {
  transform: translateY(-2px);
  background: var(--ink);
  color: white;
}
.button--primary {
  border-color: var(--orange);
  background: var(--orange);
  color: white;
}
.button--primary:hover {
  border-color: var(--orange-dark);
  background: var(--orange-dark);
}
.button--light {
  border-color: #666;
  color: white;
}
.button--light:hover {
  border-color: white;
  background: white;
  color: var(--ink);
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 1.5rem;
  border-bottom: 1px solid currentColor;
  font-size: 0.88rem;
  font-weight: 750;
  letter-spacing: 0.03em;
}
.text-link span {
  transition: transform 0.2s;
}
.text-link:hover span {
  transform: translateX(4px);
}

/* Header */
.site-header {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto;
  border-bottom: 1px solid transparent;
  transition:
    background 0.25s,
    border-color 0.25s,
    color 0.25s;
}
.site-header.is-scrolled,
.site-header.is-open {
  border-color: rgba(17, 17, 17, 0.1);
  background: rgba(247, 243, 237, 0.93);
  color: var(--ink);
  backdrop-filter: blur(16px);
}
.dark-page .site-header:not(.is-scrolled):not(.is-open),
.home-page .site-header:not(.is-scrolled):not(.is-open) {
  color: white;
}
.header-inner {
  display: grid;
  width: 100%;
  min-height: 6.25rem;
  align-items: center;
  grid-template-columns: 1fr auto 1fr;
  gap: clamp(2rem, 4vw, 5rem);
}
.brand {
  position: relative;
  z-index: 3;
  display: inline-flex;
  width: 172px;
  align-items: center;
  justify-self: start;
}
.brand img {
  width: 172px;
  height: auto;
}
.nav-wrap {
  display: contents;
}
.nav-list {
  display: flex;
  margin: 0;
  padding: 0;
  align-items: center;
  justify-self: center;
  gap: clamp(1.3rem, 2.2vw, 2.5rem);
  list-style: none;
}
.nav-list a {
  position: relative;
  padding-block: 0.4rem;
  font-size: 0.84rem;
  font-weight: 760;
  letter-spacing: 0.1em;
}
.nav-list a::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 2px;
  background: var(--orange);
  content: "";
  transform: scaleX(0);
  transition: transform 0.2s;
}
.nav-list a:hover::after,
.nav-list a[aria-current="page"]::after {
  transform: scaleX(1);
}
.language {
  display: flex;
  gap: 0.45rem;
  align-items: center;
  justify-self: end;
}
.language > span {
  font-size: 0.82rem;
  opacity: 0.45;
}
.lang-button {
  padding: 0.25rem;
  border: 0;
  background: none;
  color: inherit;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 750;
  opacity: 0.45;
}
.lang-button.is-active {
  opacity: 1;
}
.menu-button {
  position: relative;
  z-index: 3;
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  cursor: pointer;
}
.menu-button span,
.menu-button::before {
  position: absolute;
  left: 0.55rem;
  width: 1.65rem;
  height: 1px;
  background: currentColor;
  content: "";
  transition:
    transform 0.25s,
    top 0.25s;
}
.menu-button::before {
  top: 1rem;
}
.menu-button span {
  top: 1.65rem;
}
.menu-button[aria-expanded="true"]::before {
  top: 1.35rem;
  transform: rotate(45deg);
}
.menu-button[aria-expanded="true"] span {
  top: 1.35rem;
  transform: rotate(-45deg);
}

/* Heroes */
.home-hero {
  position: relative;
  display: grid;
  min-height: 100svh;
  align-items: end;
  overflow: hidden;
  padding: 10rem 0 clamp(5rem, 9vw, 8rem);
  background: var(--ink);
  color: white;
}
.home-hero::before {
  position: absolute;
  border: 1px solid rgba(241, 90, 36, 0.7);
  border-radius: 50%;
  content: "";
  pointer-events: none;
}
.home-hero::before {
  width: min(64vw, 850px);
  aspect-ratio: 1;
  top: -25%;
  right: -10%;
}
.home-hero__mini-logo {
  position: absolute;
  z-index: 1;
  display: grid;
  width: min(34vw, 460px);
  aspect-ratio: 1;
  place-items: center;
  top: 4%;
  right: 4%;
  pointer-events: none;
}
.home-hero__mini-logo img {
  width: 115%;
  height: auto;
}
.home-hero .container {
  position: relative;
  z-index: 1;
}
.home-hero .lead {
  color: #bbb;
}
.hero-highlight {
  color: var(--orange);
}
.page-hero {
  display: flex;
  min-height: 72svh;
  align-items: end;
  padding: 11rem 0 clamp(5rem, 8vw, 8rem);
  border-bottom: 1px solid var(--line);
}
.dark-page {
  background: var(--charcoal);
  color: white;
}
.dark-page .page-hero {
  border-color: #353535;
}
.page-index {
  margin-bottom: 1.2rem;
  color: var(--orange);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 0.18em;
}
.scroll-note {
  position: absolute;
  right: var(--pad);
  bottom: 2rem;
  color: #888;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  writing-mode: vertical-rl;
}

/* Layouts */
.split {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(0, 1.25fr);
  gap: clamp(3rem, 9vw, 9rem);
  align-items: start;
}
.split__aside {
  position: sticky;
  top: 8rem;
}
.prose {
  max-width: 810px;
}
.prose p {
  margin-bottom: 1.7rem;
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
}
.statement {
  padding-block: clamp(4rem, 7vw, 7rem);
  border-top: 1px solid var(--line);
}
.statement:last-child {
  border-bottom: 1px solid var(--line);
}
.statement__number {
  margin-bottom: 3rem;
  color: var(--orange);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
}
.statement p {
  max-width: 690px;
  color: var(--muted);
  font-size: 1.05rem;
}
.organization-chart__viewport {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.organization-chart__image {
  width: min(100%, 1100px);
  max-width: none;
  height: auto;
  margin-inline: auto;
}
.organization-chart__image--kr {
  display: none;
}
html[lang="ko"] .organization-chart__image--en {
  display: none;
}
html[lang="ko"] .organization-chart__image--kr {
  display: block;
}
.preview-grid {
  display: grid;
  margin-top: 4rem;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
}
.preview-item {
  min-height: 14rem;
  padding: 2rem 1.5rem 2rem 0;
  border-bottom: 1px solid var(--line);
}
.preview-item:nth-child(3n + 2),
.preview-item:nth-child(3n + 3) {
  padding-left: 1.5rem;
  border-left: 1px solid var(--line);
}
.preview-item__number {
  color: var(--orange);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.13em;
}
.preview-item h3 {
  margin-top: 3.6rem;
}
.final-cta {
  position: relative;
  overflow: hidden;
}
.final-cta::after {
  position: absolute;
  width: 24rem;
  aspect-ratio: 1;
  right: -10rem;
  bottom: -14rem;
  border: 1px solid rgba(241, 90, 36, 0.6);
  border-radius: 50%;
  content: "";
}

/* Business */
.business-list {
  counter-reset: business;
}
.business-block {
  display: grid;
  padding-block: clamp(4.5rem, 8vw, 8rem);
  grid-template-columns: 0.42fr 1.58fr;
  gap: 2rem;
  border-top: 1px solid var(--line);
}
.business-block:last-child {
  border-bottom: 1px solid var(--line);
}
.business-number {
  color: var(--orange);
  font-size: clamp(2rem, 4vw, 4.5rem);
  font-weight: 500;
  letter-spacing: -0.05em;
}
.business-content {
  display: grid;
  grid-template-columns: 1fr 0.7fr;
  gap: clamp(2rem, 7vw, 7rem);
}
.business-content p {
  color: var(--muted);
  font-size: 1.05rem;
}
.model-label {
  margin-bottom: 0.8rem;
  color: var(--muted);
  font-size: 0.67rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.model {
  font-weight: 650;
  line-height: 1.8;
}

/* IP */
.tabs {
  display: flex;
  margin-bottom: 3rem;
  gap: 1rem;
  border-bottom: 1px solid var(--line);
}
.tab {
  padding: 1rem 0;
  border: 0;
  border-bottom: 2px solid transparent;
  background: none;
  color: var(--muted);
  cursor: pointer;
  font-weight: 750;
}
.tab.is-active {
  border-color: var(--orange);
  color: var(--ink);
}
.ip-list {
  border-top: 1px solid var(--line);
}
.ip-item {
  display: grid;
  padding: 1.7rem 0;
  grid-template-columns: 1.1fr 2.6fr 0.9fr 0.8fr;
  gap: 1.5rem;
  align-items: center;
  border-bottom: 1px solid var(--line);
}
.ip-item__reg {
  color: var(--orange);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.05em;
}
.ip-item__title {
  font-size: 1.05rem;
  font-weight: 650;
  line-height: 1.35;
}
.ip-item__meta {
  color: var(--muted);
  font-size: 0.77rem;
}
.ip-panel[hidden] {
  display: none;
}

/* Partners */
.logo-marquee {
  overflow: hidden;
  padding-block: 3rem;
  border-block: 1px solid #353535;
}
.logo-track {
  display: flex;
  width: max-content;
  animation: marquee 44s linear infinite;
}
.logo-set {
  display: flex;
  align-items: center;
}
.logo-cell {
  display: grid;
  width: 220px;
  height: 90px;
  padding: 1.25rem 2rem;
  place-items: center;
}
.logo-cell img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: grayscale(1) brightness(0) invert(1);
  opacity: 0.58;
  transition:
    filter 0.25s,
    opacity 0.25s;
}
.logo-cell:hover img {
  filter: none;
  opacity: 1;
}
@keyframes marquee {
  to {
    transform: translateX(-50%);
  }
}
.logo-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 1px solid #353535;
  border-left: 1px solid #353535;
}
.logo-grid .logo-cell {
  width: 100%;
  height: 150px;
  border-right: 1px solid #353535;
  border-bottom: 1px solid #353535;
}

/* Career / Contact */
.value-grid {
  display: grid;
  margin-top: 4rem;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.value {
  min-height: 16rem;
  padding: 2rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.value span {
  color: var(--orange);
  font-size: 0.7rem;
  font-weight: 800;
}
.value h3 {
  margin-top: 5rem;
}
.interest-list {
  columns: 2;
  max-width: 900px;
  margin: 3rem 0 0;
  padding: 0;
  list-style: none;
}
.interest-list li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
  break-inside: avoid;
}
.contact-grid {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: clamp(3rem, 10vw, 10rem);
}
.contact-meta {
  font-size: 1.15rem;
}
.contact-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.6rem 1rem;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.field--wide {
  grid-column: 1 / -1;
}
.field label,
.privacy {
  font-size: 0.73rem;
  font-weight: 750;
  letter-spacing: 0.05em;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.9rem 0;
  border: 0;
  border-bottom: 1px solid #aaa39a;
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  outline: none;
}
.field textarea {
  min-height: 9rem;
  resize: vertical;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--orange);
  box-shadow: 0 1px var(--orange);
}
.privacy {
  display: flex;
  grid-column: 1 / -1;
  gap: 0.7rem;
  align-items: flex-start;
}
.privacy input {
  margin-top: 0.3rem;
  accent-color: var(--orange);
}
.form-status {
  min-height: 1.5rem;
  grid-column: 1 / -1;
  color: var(--orange-dark);
  font-size: 0.85rem;
}

/* Footer */
.site-footer {
  padding: clamp(4.5rem, 8vw, 7rem) 0 2rem;
  background: #101010;
  color: white;
}
.footer-top {
  display: grid;
  padding-bottom: 5rem;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 4rem;
}
.footer-brand img {
  width: 190px;
  height: auto;
}
.footer-brand p {
  margin-top: 1.1rem;
  color: #898989;
  font-size: 0.8rem;
}
.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.7rem 2rem;
  align-content: start;
}
.footer-nav a {
  color: #bbb;
  font-size: 0.8rem;
}
.footer-nav a:hover {
  color: white;
}
.footer-email {
  display: inline-block;
  margin-top: 1.5rem;
  border-bottom: 1px solid #555;
  color: #ddd;
  font-size: 0.85rem;
}
.footer-bottom {
  display: grid;
  padding-top: 2rem;
  grid-template-columns: 0.55fr 1.45fr;
  gap: 3rem;
  border-top: 1px solid #303030;
  color: #777;
  font-size: 0.68rem;
}
.footer-bottom p {
  margin: 0;
}

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.7s ease,
    transform 0.7s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
.not-found {
  display: grid;
  min-height: 100svh;
  place-items: center;
  text-align: center;
}
.not-found__code {
  color: var(--orange);
  font-size: clamp(7rem, 25vw, 19rem);
  font-weight: 550;
  letter-spacing: -0.09em;
  line-height: 0.75;
}

@media (max-width: 1040px) {
  .site-header.is-open {
    height: 100vh;
    height: 100dvh;
    background: var(--ivory);
    backdrop-filter: none;
  }
  .header-inner {
    display: flex;
    min-height: 5.4rem;
    justify-content: space-between;
  }
  .brand,
  .brand img {
    width: 150px;
  }
  .menu-button {
    display: block;
  }
  .nav-wrap {
    position: fixed;
    z-index: 2;
    inset: 0;
    display: flex;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    min-height: 100svh;
    padding: 8rem var(--pad) 3rem;
    flex-direction: column;
    align-items: stretch;
    justify-content: space-between;
    background: var(--ivory);
    color: var(--ink);
    overflow-y: auto;
    overscroll-behavior: contain;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-15px);
    transition:
      opacity 0.25s,
      transform 0.25s;
  }
  .site-header.is-open .nav-wrap {
    opacity: 1;
    pointer-events: auto;
    transform: none;
  }
  .nav-list {
    flex: 0 0 auto;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }
  .nav-list a {
    display: block;
    padding: 0.3rem 0;
    font-size: clamp(1.8rem, 6vw, 3.5rem);
    font-weight: 550;
    letter-spacing: -0.04em;
    line-height: 1.25;
  }
  .language {
    padding-top: 1.2rem;
    border-top: 1px solid var(--line);
  }
  .lang-button {
    font-size: 0.9rem;
  }
  .logo-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 760px) {
  .organization-chart__image {
    width: 720px;
    margin-inline: 0;
  }
  .home-hero::before {
    width: 100vw;
    top: -8%;
    right: -45%;
  }
  .home-hero__mini-logo {
    width: 62vw;
    top: 7%;
    right: -16%;
  }
  .split,
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .split__aside {
    position: static;
  }
  .preview-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .preview-item:nth-child(n) {
    padding-inline: 0 1rem;
    border-left: 0;
  }
  .preview-item:nth-child(even) {
    padding-left: 1rem;
    border-left: 1px solid var(--line);
  }
  .business-block {
    grid-template-columns: 1fr;
  }
  .business-number {
    margin-bottom: 1rem;
  }
  .business-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .ip-item {
    grid-template-columns: 1fr 2fr;
    gap: 0.8rem 1rem;
  }
  .ip-item__meta {
    font-size: 0.72rem;
  }
  .logo-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .logo-grid .logo-cell {
    height: 120px;
    padding: 1.2rem;
  }
  .value-grid {
    grid-template-columns: 1fr;
  }
  .value {
    min-height: 12rem;
  }
  .value h3 {
    margin-top: 3rem;
  }
  .interest-list {
    columns: 1;
  }
  .footer-top,
  .footer-bottom {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .footer-top {
    padding-bottom: 3rem;
  }
}

@media (max-width: 520px) {
  .header-inner {
    min-height: 4.6rem;
  }
  .brand,
  .brand img {
    width: 122px;
  }
  .page-hero {
    min-height: 68svh;
    padding-top: 8rem;
  }
  .display {
    font-size: clamp(2rem, 15vw, 4.4rem);
  }
  .preview-grid {
    grid-template-columns: 1fr;
  }
  .preview-item:nth-child(n) {
    padding-inline: 0;
    border-left: 0;
    min-height: 10rem;
  }
  .preview-item h3 {
    margin-top: 2.5rem;
  }
  .logo-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .logo-grid .logo-cell {
    height: 105px;
    padding: 1rem;
  }
  .contact-form {
    grid-template-columns: 1fr;
  }
  .field {
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .logo-track {
    animation: none;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}