:root {
  --ink: #101418;
  --muted: #657080;
  --line: #d8dee6;
  --paper: #f5f7f8;
  --surface: #ffffff;
  --blue: #0d5f8c;
  --cyan: #42b5c8;
  --green: #6abf8f;
  --gold: #d5a84f;
  --charcoal: #17202a;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Inter", "Noto Sans KR", "Noto Sans SC", system-ui, sans-serif;
}

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

.site-header {
  position: fixed;
  z-index: 30;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(16, 20, 24, 0.84);
  color: #fff;
  backdrop-filter: blur(18px);
}

.brand,
.desktop-nav,
.header-actions,
.hero-actions,
footer,
.signal-strip {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 12px;
}

.desktop-nav {
  gap: 26px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
  font-weight: 700;
}

.desktop-nav a:hover {
  color: #fff;
}

.header-actions {
  gap: 10px;
}

.language-switch {
  display: flex;
  padding: 3px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.lang-button {
  min-width: 42px;
  height: 30px;
  border: 0;
  border-radius: 6px;
  color: rgba(255, 255, 255, 0.72);
  background: transparent;
  font-weight: 800;
  cursor: pointer;
}

.lang-button.active {
  color: var(--ink);
  background: #fff;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: #fff;
}

.mobile-nav {
  position: fixed;
  z-index: 25;
  top: 73px;
  left: 12px;
  right: 12px;
  display: none;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 18px 40px rgba(16, 20, 24, 0.18);
}

.mobile-nav.open {
  display: grid;
  gap: 4px;
}

.mobile-nav a {
  padding: 14px;
  border-radius: 8px;
  font-weight: 800;
}

.hero {
  position: relative;
  min-height: 94vh;
  display: grid;
  align-items: end;
  padding: 132px clamp(18px, 5vw, 72px) 72px;
  overflow: hidden;
  color: #fff;
  background: var(--charcoal);
}

.hero-image,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(16, 20, 24, 0.92) 0%, rgba(16, 20, 24, 0.74) 42%, rgba(16, 20, 24, 0.22) 100%),
    linear-gradient(0deg, rgba(16, 20, 24, 0.72) 0%, transparent 38%);
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 860px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 920px;
  margin-bottom: 24px;
  font-size: clamp(46px, 7.6vw, 96px);
  line-height: 0.96;
  letter-spacing: 0;
}

.hero-text {
  max-width: 710px;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.72;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  max-width: 780px;
  margin-top: 28px;
}

.hero-metrics article {
  min-height: 92px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
}

.hero-metrics strong {
  display: block;
  margin-bottom: 8px;
  color: #fff;
  font-size: 18px;
}

.hero-metrics span {
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
  line-height: 1.45;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  border: 1px solid currentColor;
  border-radius: 8px;
  font-weight: 800;
}

.button.primary {
  color: #fff;
  border-color: var(--blue);
  background: var(--blue);
}

.button.secondary {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.button.light {
  color: var(--ink);
  border-color: #fff;
  background: #fff;
}

.signal-strip {
  justify-content: space-between;
  gap: 18px;
  padding: 22px clamp(18px, 5vw, 72px);
  color: #fff;
  background: var(--charcoal);
}

.signal-strip div {
  display: grid;
  gap: 2px;
}

.signal-strip strong {
  font-size: 24px;
}

.signal-strip span {
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
}

.section {
  padding: clamp(72px, 10vw, 124px) clamp(18px, 5vw, 72px);
}

.section-heading {
  max-width: 850px;
  margin-bottom: 36px;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(32px, 5vw, 62px);
  line-height: 1.07;
  letter-spacing: 0;
}

.company {
  background: #fff;
}

.company-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 0.7fr);
  gap: clamp(28px, 5vw, 70px);
}

.company-layout > p {
  color: #384252;
  font-size: 20px;
  line-height: 1.8;
}

.company-facts {
  display: grid;
  gap: 12px;
}

.company-facts article,
.solution-card,
.tech-panel,
.platform-grid article,
.suite-grid article,
.use-grid article,
.deployment-steps li {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.company-facts article {
  display: grid;
  gap: 8px;
  padding: 22px;
}

.company-facts span,
.solution-card span {
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.company-facts strong {
  font-size: 22px;
}

.platform {
  background: #f7fafb;
}

.platform-layout {
  display: grid;
  grid-template-columns: minmax(300px, 0.78fr) minmax(0, 1fr);
  gap: clamp(24px, 5vw, 64px);
  align-items: start;
}

.platform-copy {
  position: sticky;
  top: 98px;
}

.platform-copy p {
  color: #384252;
  font-size: 19px;
  line-height: 1.78;
}

.data-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-top: 28px;
}

.data-flow span {
  min-height: 64px;
  display: grid;
  place-items: center;
  padding: 10px;
  border: 1px solid rgba(13, 95, 140, 0.18);
  border-radius: 8px;
  color: var(--blue);
  background: rgba(13, 95, 140, 0.06);
  font-size: 13px;
  font-weight: 900;
  text-align: center;
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.platform-grid article {
  min-height: 180px;
  padding: 24px;
}

.platform-grid strong {
  display: block;
  margin-bottom: 14px;
  font-size: 21px;
}

.platform-grid p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.7;
}

.product-suite {
  background: #fff;
}

.suite-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.suite-grid article {
  position: relative;
  min-height: 280px;
  overflow: hidden;
  padding: 24px;
}

.suite-grid article::before,
.intel-layout article::before,
.use-grid article::before {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: "";
  background: radial-gradient(
    circle at var(--x, 50%) var(--y, 50%),
    rgba(66, 181, 200, 0.16),
    transparent 34%
  );
  opacity: 0;
  transition: opacity 180ms ease;
}

.suite-grid article:hover::before,
.intel-layout article:hover::before,
.use-grid article:hover::before {
  opacity: 1;
}

.suite-grid span {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  padding: 0 10px;
  border-radius: 8px;
  color: #fff;
  background: var(--blue);
  font-size: 12px;
  font-weight: 900;
}

.suite-grid h3 {
  margin: 28px 0 12px;
  font-size: 24px;
}

.suite-grid p {
  color: var(--muted);
  line-height: 1.7;
}

.solutions {
  background: #eef4f5;
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.solution-card {
  position: relative;
  overflow: hidden;
  min-height: 260px;
  padding: 26px;
}

.solution-card::before {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: "";
  background: radial-gradient(
    circle at var(--x, 50%) var(--y, 50%),
    rgba(66, 181, 200, 0.18),
    transparent 34%
  );
  opacity: 0;
  transition: opacity 180ms ease;
}

.solution-card:hover::before {
  opacity: 1;
}

.solution-card h3,
.tech-panel h3 {
  margin: 18px 0 12px;
  font-size: 26px;
}

.solution-card p,
.tech-panel li,
.contact-band p {
  color: var(--muted);
  line-height: 1.7;
}

.technology {
  background: #fff;
}

.technology-grid {
  display: grid;
  grid-template-columns: minmax(300px, 0.7fr) minmax(0, 1fr);
  gap: clamp(24px, 5vw, 64px);
  align-items: stretch;
}

.tech-panel {
  padding: 28px;
}

.tech-panel ul {
  display: grid;
  gap: 14px;
  padding: 0;
  margin: 22px 0 0;
  list-style: none;
}

.tech-panel li {
  padding-left: 18px;
  border-left: 3px solid var(--green);
}

.system-map {
  position: relative;
  min-height: 430px;
  overflow: hidden;
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(13, 95, 140, 0.9), rgba(23, 32, 42, 0.96)),
    var(--charcoal);
}

.system-map::before {
  position: absolute;
  inset: 36px;
  content: "";
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
}

.system-map::after {
  position: absolute;
  inset: 84px;
  content: "";
  border: 1px dashed rgba(255, 255, 255, 0.24);
  border-radius: 50%;
}

.node {
  position: absolute;
  display: grid;
  width: 92px;
  height: 92px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 50%;
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
  font-weight: 900;
}

.node-primary {
  top: 50%;
  left: 50%;
  width: 122px;
  height: 122px;
  background: var(--cyan);
  color: var(--ink);
  transform: translate(-50%, -50%);
}

.node:nth-child(2) {
  top: 15%;
  left: 18%;
}

.node:nth-child(3) {
  top: 14%;
  right: 16%;
}

.node:nth-child(4) {
  right: 18%;
  bottom: 14%;
}

.node:nth-child(5) {
  left: 17%;
  bottom: 16%;
}

.console-section {
  background: var(--charcoal);
  color: #fff;
}

.console-section .eyebrow {
  color: var(--green);
}

.console-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.5fr);
  gap: clamp(22px, 4vw, 48px);
  align-items: stretch;
}

.console-panel {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.28);
}

.console-toolbar {
  display: flex;
  gap: 8px;
  padding: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.console-toolbar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.38);
}

.console-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 16px;
  padding: 16px;
}

.console-map {
  position: relative;
  min-height: 360px;
  overflow: hidden;
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(0deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(135deg, rgba(66, 181, 200, 0.28), rgba(13, 95, 140, 0.2));
  background-size: 42px 42px, 42px 42px, cover;
}

.console-map::before {
  position: absolute;
  inset: 16%;
  content: "";
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
}

.console-map::after {
  position: absolute;
  left: 12%;
  right: 18%;
  top: 48%;
  height: 2px;
  content: "";
  background: rgba(106, 191, 143, 0.72);
}

.pulse {
  position: absolute;
  width: 18px;
  height: 18px;
  border: 3px solid rgba(255, 255, 255, 0.8);
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 10px rgba(106, 191, 143, 0.16);
}

.pulse-a {
  left: 22%;
  top: 34%;
}

.pulse-b {
  right: 28%;
  top: 48%;
}

.pulse-c {
  left: 48%;
  bottom: 22%;
}

.console-feed {
  display: grid;
  gap: 10px;
  align-content: start;
}

.console-feed div,
.console-points article {
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.console-feed strong {
  display: block;
  margin-bottom: 8px;
}

.console-feed span,
.console-points p {
  color: rgba(255, 255, 255, 0.68);
  line-height: 1.55;
}

.console-points {
  display: grid;
  gap: 12px;
}

.console-points span {
  display: block;
  margin-bottom: 8px;
  color: var(--green);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.intelligence {
  background: #f7fafb;
}

.intel-layout {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.intel-layout article {
  position: relative;
  overflow: hidden;
  min-height: 300px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(66, 181, 200, 0.08), transparent 42%),
    var(--surface);
}

.intel-layout span {
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.intel-layout h3 {
  margin: 18px 0 12px;
  font-size: 23px;
}

.intel-layout p {
  color: var(--muted);
  line-height: 1.7;
}

.use-cases {
  background: #eef4f5;
}

.use-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.use-grid article {
  position: relative;
  overflow: hidden;
  min-height: 250px;
  padding: 24px;
}

.use-grid span,
.deployment-steps span {
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.use-grid h3 {
  margin: 18px 0 12px;
  font-size: 23px;
}

.use-grid p,
.deployment-steps p {
  color: var(--muted);
  line-height: 1.7;
}

.deployment {
  background: #fff;
}

.industries {
  background: var(--charcoal);
  color: #fff;
}

.industries .eyebrow {
  color: var(--green);
}

.industry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.industry-tags span {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  padding: 0 18px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.86);
  font-weight: 800;
}

.deployment-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.deployment-steps li {
  min-height: 250px;
  padding: 24px;
  border-top: 4px solid var(--cyan);
}

.deployment-steps strong {
  display: block;
  margin: 18px 0 12px;
  font-size: 22px;
}

.contact-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: clamp(56px, 8vw, 92px) clamp(18px, 5vw, 72px);
  color: #fff;
  background: var(--blue);
}

.contact-band .eyebrow,
.contact-band p {
  color: rgba(255, 255, 255, 0.78);
}

.contact-band h2 {
  max-width: 780px;
}

.contact-band p {
  max-width: 640px;
  margin: 18px 0 0;
}

footer {
  justify-content: space-between;
  gap: 16px;
  padding: 28px clamp(18px, 5vw, 72px);
  color: rgba(255, 255, 255, 0.72);
  background: var(--ink);
}

@media (max-width: 920px) {
  .desktop-nav {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .hero {
    min-height: 760px;
  }

  .company-layout,
  .platform-layout,
  .suite-grid,
  .solution-grid,
  .technology-grid,
  .console-layout,
  .intel-layout,
  .use-grid,
  .deployment-steps {
    grid-template-columns: 1fr;
  }

  .platform-copy {
    position: static;
  }

  .signal-strip,
  .contact-band,
  footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  h1 {
    font-size: 44px;
  }

  .hero {
    min-height: 720px;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .data-flow,
  .platform-grid,
  .hero-metrics,
  .console-body {
    grid-template-columns: 1fr;
  }

  .system-map {
    min-height: 340px;
  }

  .node {
    width: 72px;
    height: 72px;
    font-size: 13px;
  }

  .node-primary {
    width: 96px;
    height: 96px;
  }
}