:root {
  color-scheme: dark;
  font-family: "Geist", system-ui, -apple-system, sans-serif;
  line-height: 1.55;
  color: #edf3fd;
  background: #0b1425;
  --surface: #101d31;
  --raised: #16263e;
  --line: #30445f;
  --muted: #b9c9df;
  --accent: #9ecbff;
  --heading: #f2f7ff;
  --gutter: clamp(1rem, 4vw, 3.5rem);
}

* { box-sizing: border-box; }

body { margin: 0; }

a { color: inherit; text-decoration: none; }

a:focus-visible, button:focus-visible, select:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

h1, h2, h3, p, ul { margin: 0; }

h1, h2, h3 {
  color: var(--heading);
  line-height: 1.12;
}

h2 {
  max-width: 22ch;
  font-size: clamp(2rem, 4.2vw, 3.8rem);
  font-weight: 620;
  letter-spacing: -.047em;
}

h3 { letter-spacing: -.025em; }

/* Every translation contributes to the slot size at the current viewport. */
[data-i18n].localized { display: grid; }

.localized > .locale-copy {
  grid-area: 1 / 1;
  min-width: 0;
  visibility: hidden;
}

.locale-copy[lang="ko"] {
  word-break: keep-all;
  overflow-wrap: anywhere;
}

.hero-line .locale-copy[lang="ko"] { max-width: 12ch; }

html[lang="ru"] .locale-copy[lang="ru"],
html[lang="en"] .locale-copy[lang="en"],
html[lang="ko"] .locale-copy[lang="ko"] { visibility: visible; }

.shell {
  width: min(calc(100% - var(--gutter) * 2), 75rem);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 2;
  inset: .5rem auto auto .5rem;
  padding: .65rem 1rem;
  border-radius: .25rem;
  background: var(--accent);
  color: #0b1425;
  transform: translateY(calc(-100% - 1rem));
}

.skip-link:focus { transform: none; }

.site-header {
  border-bottom: 1px solid var(--line);
  background: #0b1425;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem clamp(.75rem, 2vw, 1.75rem);
  min-height: 5.15rem;
}

.brand {
  display: block;
  flex: 0 0 auto;
  width: 10.75rem;
}

.language-control {
  flex: 0 0 auto;
  width: 7.15rem;
  position: relative;
}

.language-globe {
  position: absolute;
  z-index: 1;
  top: 50%;
  left: .6rem;
  width: 1rem;
  color: var(--accent);
  font-size: 1.05rem;
  line-height: 1;
  pointer-events: none;
  transform: translateY(-50%);
}

.language-picker {
  width: 100%;
  min-height: 2.75rem;
  padding: .4rem .55rem .4rem 2rem;
  border: 1px solid var(--line);
  border-radius: .35rem;
  background: var(--surface);
  color: var(--heading);
  font: inherit;
  font-size: .875rem;
  cursor: pointer;
}

.brand img {
  display: block;
  width: 100%;
  height: auto;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: .25rem clamp(.65rem, 2.2vw, 1.85rem);
  padding: 0;
  list-style: none;
}

.nav-list a {
  display: flex;
  align-items: center;
  min-height: 2.75rem;
  gap: .4rem;
  color: var(--muted);
  font-size: .875rem;
}

.nav-list a[href="#home"] { color: var(--heading); }

.nav-list a[href="#contact"],
.site-footer a { color: var(--accent); }

.nav-list a:hover,
.site-footer a:hover { text-decoration: underline; text-underline-offset: .3em; }

.hero {
  overflow: clip;
  border-bottom: 1px solid var(--line);
  background: radial-gradient(ellipse at 86% 30%, #152d50 0, transparent 52%), #0b1425;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  align-items: center;
  gap: 2rem;
  padding-block: clamp(3.75rem, 8vw, 7.5rem);
}

.eyebrow {
  margin-bottom: .9rem;
  color: var(--accent);
  font-size: .75rem;
  font-weight: 650;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(3.15rem, 6.5vw, 6.25rem);
  font-weight: 650;
  line-height: .99;
  letter-spacing: -.06em;
}

.hero-dash { color: var(--accent); }

.hero-line {
  display: block;
  max-width: 15ch;
  margin-top: .28em;
  font-size: .63em;
  line-height: 1.05;
  letter-spacing: -.045em;
}

.hero-summary {
  max-width: 50ch;
  margin-top: 1.4rem;
  color: var(--muted);
  font-size: clamp(1rem, 1.55vw, 1.22rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .8rem;
  min-height: 3.1rem;
  padding: .65rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: .35rem;
  font-size: .925rem;
  font-weight: 650;
}

.button-primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #0a1528;
}

.button-primary:hover { background: #bfdfff; }

.button-secondary:hover {
  border-color: var(--accent);
  background: var(--surface);
}

.hero-symbol {
  display: block;
  justify-self: center;
  width: min(100%, 27rem);
  height: auto;
}

.section { padding-block: clamp(3.25rem, 7vw, 6.2rem); }

.section-directions,
.section-services { border-bottom: 1px solid var(--line); }

.section-directions h2,
.section-projects h2 { margin-bottom: clamp(1.65rem, 4vw, 2.75rem); }

.directions-grid,
.projects-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .85rem;
}

.direction {
  min-width: 0;
  padding: clamp(1rem, 2vw, 1.65rem);
  border: 1px solid var(--line);
  border-radius: .45rem;
  background: var(--surface);
}

.direction h3 {
  margin: 1.25rem 0 .65rem;
  font-size: clamp(1.13rem, 1.8vw, 1.5rem);
  font-weight: 625;
  overflow-wrap: anywhere;
}

.direction p,
.project > p:not(.project-stage),
.section-intro,
.service-list li > span,
#contact-help {
  color: var(--muted);
}

.direction-icon {
  position: relative;
  display: grid;
  place-items: center;
  width: 2.65rem;
  height: 2.65rem;
  border: 1px solid #3c587c;
  border-radius: .35rem;
  color: var(--accent);
}

.direction-icon::before,
.direction-icon::after {
  position: absolute;
  content: "";
}

.icon-ai::before {
  width: .85rem;
  aspect-ratio: 1;
  border: 1px solid;
  border-radius: .17rem;
  box-shadow: 0 0 0 .22rem #9ecbff33;
}

.icon-ai::after {
  width: .24rem;
  aspect-ratio: 1;
  border-radius: 50%;
  background: currentColor;
}

.icon-translation::before,
.icon-translation::after {
  width: 1rem;
  height: .42rem;
  border: 1px solid;
  border-radius: .12rem;
}

.icon-translation::before { transform: translate(-.2rem, -.27rem); }
.icon-translation::after { transform: translate(.2rem, .27rem); }

.icon-iot::before {
  width: .95rem;
  height: .95rem;
  border: 1px solid;
  transform: rotate(45deg);
}

.icon-iot::after {
  width: .25rem;
  aspect-ratio: 1;
  border-radius: 50%;
  background: currentColor;
}

.icon-infrastructure::before {
  width: 1.12rem;
  height: .4rem;
  border: 1px solid;
  border-radius: .12rem;
  box-shadow: 0 -.375rem currentColor, 0 .375rem currentColor;
}

.section-projects { background: var(--surface); }

.projects-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.project {
  padding: clamp(1.25rem, 3.5vw, 2.4rem);
  border: 1px solid var(--line);
  border-top-color: #668fc2;
  border-radius: .45rem;
  background: #0e192c;
}

.project-stage {
  margin-bottom: 1rem;
  color: var(--accent);
  font-size: .82rem;
}

.project h3 {
  margin-bottom: .7rem;
  font-size: clamp(1.5rem, 2.8vw, 2.45rem);
  font-weight: 620;
  overflow-wrap: anywhere;
}

.project-application {
  margin-top: 1.2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.project-application strong { color: var(--heading); }

.split {
  display: grid;
  grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
  align-items: start;
  gap: clamp(1.5rem, 5vw, 4rem);
}

.section-intro { max-width: 36ch; margin-top: 1rem; }

.service-list { padding: 0; list-style: none; }

.service-list li {
  display: grid;
  gap: .3rem;
  padding: .95rem 0 1rem;
  border-top: 1px solid var(--line);
}

.service-list li:last-child { border-bottom: 1px solid var(--line); }

.section-about { padding-bottom: 0; }

.about-panel {
  padding: clamp(1.4rem, 4vw, 3.5rem);
  border: 1px solid #405f8a;
  border-radius: .45rem;
  background: linear-gradient(115deg, #183353, #111f35);
}

.about-panel p { max-width: 58ch; color: #d8e6fa; }

.contact-card {
  padding: clamp(1.15rem, 3vw, 2rem);
  border: 1px solid var(--line);
  border-radius: .45rem;
  background: var(--raised);
}

.contact-address {
  display: inline-block;
  margin-top: 1rem;
  color: var(--accent);
  font-size: clamp(1.05rem, 2vw, 1.45rem);
  font-weight: 600;
  overflow-wrap: anywhere;
}

.contact-address:hover { text-decoration: underline; text-underline-offset: .25em; }

.contact-form:not([hidden]),
.contact-field {
  display: grid;
  gap: .55rem;
}

.contact-form:not([hidden]) { gap: 1rem; }

.contact-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.contact-field { font-size: .9rem; }

.contact-field input,
.contact-field textarea {
  width: 100%;
  min-width: 0;
  min-height: 2.75rem;
  padding: .65rem .7rem;
  border: 1px solid var(--line);
  border-radius: .35rem;
  background: #0b1425;
  color: var(--heading);
  font: inherit;
}

.contact-field textarea { resize: vertical; }

.contact-form .button {
  justify-self: start;
  cursor: pointer;
  font-family: inherit;
  text-align: center;
}

#contact-help { font-size: .875rem; }

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .86rem;
}

.footer-inner a { display: inline-flex; align-items: center; gap: .3rem; }

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: .7rem 2rem;
  padding-block: 1.5rem;
}

@media (max-width: 55rem) {
  .header-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: .2rem 1rem;
    padding-block: .65rem .35rem;
  }

  .header-inner nav { grid-row: 2; grid-column: 1 / -1; }
  .language-control { grid-row: 1; grid-column: 2; }
  .nav-list { justify-content: flex-start; }

  .directions-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-grid { gap: 1.25rem; }
}

@media (max-width: 45rem) {
  .nav-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    justify-content: start;
    gap: 0 .4rem;
    width: 100%;
    border-top: 1px solid var(--line);
  }

  .nav-list a { font-size: .82rem; overflow-wrap: anywhere; }
  .nav-list a [aria-hidden] { flex: 0 0 auto; }

  .hero-grid, .split { grid-template-columns: minmax(0, 1fr); }

  .hero-grid { gap: 2rem; padding-block: 2.6rem 2.85rem; }
  .hero-symbol { width: min(100%, 14.5rem); }
}

@media (max-width: 31rem) {
  .projects-grid { grid-template-columns: minmax(0, 1fr); }
  .directions-grid { gap: .55rem; }
  .direction { padding: .85rem; }
  .direction h3 { margin-top: .95rem; font-size: 1.1rem; }
  .direction p { font-size: .93rem; }
}

@media (max-width: 22rem) {
  .header-inner { column-gap: .5rem; }
  .brand { max-width: 100%; }
  .contact-fields { grid-template-columns: minmax(0, 1fr); }
  .actions { display: grid; }
  .directions-grid { grid-template-columns: minmax(0, 1fr); }
}