:root {
  --bg: #0D1117;
  --surface: #111823;
  --border: #1E2D45;
  --accent: #1B2A4A;
  --accent-bright: #2E5EBF;
  --text-primary: #E8EAF0;
  --text-secondary: #7A8499;
  --text-dim: #444D5E;
  --cta: #2E5EBF;
  --cta-hover: #3B72D9;
  --max-width: 1240px;
  --header-height: 84px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text-primary);
  font-family: 'IBM Plex Mono', monospace;
  line-height: 1.65;
}

a {
  color: inherit;
}

img {
  display: block;
  max-width: 100%;
}

.site-shell {
  min-height: 100vh;
  background-image:
    linear-gradient(to right, rgba(30, 45, 69, 0.24) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 45, 69, 0.18) 1px, transparent 1px);
  background-size: 48px 48px;
}

.container {
  width: min(calc(100% - 48px), var(--max-width));
  margin: 0 auto;
}

.section {
  padding: 112px 0;
  border-top: 1px solid var(--border);
}

.band {
  background: rgba(17, 24, 35, 0.78);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-height);
  backdrop-filter: blur(10px);
  background: rgba(13, 17, 23, 0.9);
  border-bottom: 1px solid var(--border);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: var(--header-height);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  text-decoration: none;
}

.brand-mark {
  width: 48px;
  height: 48px;
  object-fit: contain;
  flex-shrink: 0;
}

.brand-copy {
  display: grid;
  gap: 2px;
}

.brand-name,
.brand-tag,
.eyebrow,
.card-index,
.panel-header,
.contact-line span,
.operator-note span,
.hero-data dt,
.signal-code,
.site-nav a,
.footer-wrap,
.button {
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.brand-name {
  font-family: 'Syne', sans-serif;
  font-size: 1rem;
}

.brand-tag {
  color: var(--text-secondary);
  font-size: 0.7rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.76rem;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text-primary);
}

.nav-toggle {
  display: none;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--text-primary);
}

.nav-toggle span + span {
  margin-top: 7px;
}

.hero {
  padding: 120px 0 104px;
  border-top: 0;
}

.hero-grid,
.operator-grid,
.contact-grid,
.two-column {
  display: grid;
  gap: 48px;
}

.hero-grid {
  grid-template-columns: minmax(0, 1.45fr) minmax(320px, 0.75fr);
  align-items: end;
}

.eyebrow {
  color: var(--accent-bright);
  font-size: 0.72rem;
  margin-bottom: 18px;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  line-height: 0.98;
}

h1 {
  max-width: 13ch;
  font-size: clamp(3.4rem, 7vw, 6.4rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 3.4rem);
}

h3 {
  font-size: 1.2rem;
}

p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.98rem;
}

.hero-text {
  max-width: 62ch;
  margin-top: 24px;
  font-size: 1.02rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 20px;
  border: 1px solid var(--border);
  text-decoration: none;
  font-size: 0.78rem;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.button-primary {
  background: var(--cta);
  border-color: var(--cta);
  color: var(--text-primary);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--cta-hover);
  border-color: var(--cta-hover);
}

.button-secondary {
  background: transparent;
  color: var(--text-primary);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: var(--accent-bright);
  background: rgba(27, 42, 74, 0.22);
}

.hero-data {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 48px 0 0;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.hero-data dt {
  margin-bottom: 10px;
  color: var(--text-dim);
  font-size: 0.72rem;
}

.hero-data dd {
  margin: 0;
  color: var(--text-primary);
  font-size: 0.84rem;
}

.hero-panel,
.info-card,
.contact-panel,
.operator-note {
  background: var(--surface);
  border: 1px solid var(--border);
}

.hero-panel {
  align-self: stretch;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  color: var(--text-dim);
  font-size: 0.7rem;
  border-bottom: 1px solid var(--border);
}

.panel-body {
  padding: 24px 20px 24px;
}

.panel-body p {
  color: var(--text-primary);
}

.panel-body ul {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.panel-body li {
  position: relative;
  margin-top: 12px;
  padding-left: 18px;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.panel-body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72rem;
  width: 8px;
  height: 1px;
  background: var(--accent-bright);
}

.section-head {
  display: grid;
  gap: 14px;
  margin-bottom: 42px;
}

.left-tight {
  margin-bottom: 0;
}

.card-grid {
  display: grid;
  gap: 20px;
}

.four-up {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.info-card {
  min-height: 255px;
  padding: 22px;
}

.card-index {
  display: inline-block;
  margin-bottom: 28px;
  color: var(--accent-bright);
  font-size: 0.72rem;
}

.info-card p {
  margin-top: 18px;
}

.two-column {
  grid-template-columns: 0.8fr 1.2fr;
  align-items: start;
}

.signal-list {
  border-top: 1px solid var(--border);
}

.signal-row {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}

.signal-code {
  color: var(--accent-bright);
  font-size: 0.72rem;
}

.operator-grid {
  grid-template-columns: minmax(300px, 0.78fr) minmax(0, 1fr);
  align-items: center;
}

.portrait-wrap {
  border: 1px solid var(--border);
  background: #0b0f16;
}

.portrait {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.operator-copy {
  display: grid;
  gap: 22px;
}

.operator-copy p {
  max-width: 62ch;
}

.operator-note {
  display: grid;
  gap: 8px;
  max-width: 380px;
  padding: 18px 20px;
  margin-top: 8px;
}

.operator-note span {
  color: var(--text-dim);
  font-size: 0.72rem;
}

.operator-note p {
  color: var(--text-primary);
}

.contact-grid {
  grid-template-columns: minmax(0, 1fr) minmax(320px, 420px);
  align-items: start;
}

.contact-text {
  max-width: 58ch;
}

.contact-panel {
  padding: 6px 22px;
}

.contact-line {
  display: grid;
  gap: 8px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}

.contact-line:last-child {
  border-bottom: 0;
}

.contact-line span {
  color: var(--text-dim);
  font-size: 0.72rem;
}

.contact-line a,
.contact-line p {
  color: var(--text-primary);
  text-decoration: none;
}

.contact-line a:hover,
.contact-line a:focus-visible {
  color: var(--accent-bright);
}

.site-footer {
  border-top: 1px solid var(--border);
}

.footer-wrap {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 0 28px;
  color: var(--text-dim);
  font-size: 0.72rem;
}

@media (max-width: 1120px) {
  .four-up {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-grid,
  .two-column,
  .operator-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(calc(100% - 32px), var(--max-width));
  }

  .site-header {
    height: auto;
  }

  .nav-wrap {
    min-height: var(--header-height);
    flex-wrap: wrap;
    padding: 14px 0;
  }

  .nav-toggle {
    display: block;
    margin-left: auto;
  }

  .site-nav {
    display: none;
    width: 100%;
    padding: 12px 0 4px;
    border-top: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .site-nav.is-open {
    display: flex;
  }

  .brand-copy {
    gap: 0;
  }

  .brand-tag {
    font-size: 0.62rem;
  }

  .section {
    padding: 84px 0;
  }

  .hero {
    padding: 84px 0 80px;
  }

  .hero-data,
  .four-up {
    grid-template-columns: 1fr;
  }

  .signal-row {
    grid-template-columns: 64px 1fr;
  }

  .footer-wrap {
    flex-direction: column;
  }
}