:root {
  color-scheme: dark;
  --bg: #07101d;
  --panel: #101b2d;
  --panel-soft: #132237;
  --text: #eef5ff;
  --muted: #9fb0c8;
  --line: rgba(255, 255, 255, 0.1);
  --accent: #5eead4;
  --accent-2: #8ab4ff;
  --shadow: 0 22px 70px rgba(0, 0, 0, 0.28);
}

[data-theme="light"] {
  color-scheme: light;
  --bg: #f6f8fb;
  --panel: #ffffff;
  --panel-soft: #edf3fa;
  --text: #101827;
  --muted: #526173;
  --line: rgba(16, 24, 39, 0.12);
  --accent: #0f9f8e;
  --accent-2: #315fbe;
  --shadow: 0 18px 48px rgba(43, 61, 86, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 80% 0%, rgba(94, 234, 212, 0.13), transparent 34%),
    linear-gradient(180deg, var(--bg), #090d16 72%);
  color: var(--text);
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px clamp(18px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  background: var(--panel-soft);
  color: var(--accent);
  font-size: 0.78rem;
}

.site-nav {
  display: flex;
  gap: 16px;
  color: var(--muted);
  font-size: 0.92rem;
}

.site-nav a {
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--text);
}

.header-actions {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.language-switch {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  padding: 9px 13px;
  font-size: 0.9rem;
  text-decoration: none;
  transition: transform 180ms ease, border-color 180ms ease;
}

.language-switch:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
}

.theme-toggle,
.button {
  min-height: 40px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  padding: 10px 15px;
  font: inherit;
  text-decoration: none;
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.button.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #06101d;
  border-color: transparent;
  font-weight: 700;
}

.button:hover,
.theme-toggle:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
}

.section {
  width: min(1120px, calc(100% - 36px));
  margin: 0 auto;
  padding: 72px 0;
}

.section.compact {
  padding: 34px 0;
}

.hero {
  min-height: 78vh;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  align-items: center;
  gap: 42px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  font-weight: 700;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  font-size: clamp(3rem, 8vw, 6.6rem);
  line-height: 0.94;
  letter-spacing: 0;
}

h2 {
  margin: 0;
  font-size: clamp(1.9rem, 4vw, 3rem);
  letter-spacing: 0;
}

h3 {
  margin: 0 0 12px;
  font-size: 1.08rem;
}

.hero-subtitle {
  margin: 18px 0;
  color: var(--accent-2);
  font-size: clamp(1.1rem, 2.4vw, 1.45rem);
}

.hero-copy,
.section-heading p,
.card p,
.contact-card p,
.timeline-list p {
  color: var(--muted);
  line-height: 1.7;
}

.hero-copy {
  max-width: 710px;
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.hero-panel {
  display: grid;
  gap: 18px;
}

.signal-card {
  padding: 26px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--panel), color-mix(in srgb, var(--panel) 75%, transparent));
  box-shadow: var(--shadow);
}

.signal-label,
.card-tag {
  display: inline-block;
  color: var(--accent);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}

.signal-card strong {
  display: block;
  font-size: 1.7rem;
  margin-bottom: 10px;
}

.orbital {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.orbital span {
  padding: 18px;
  border: 1px solid var(--line);
  background: var(--panel-soft);
  color: var(--muted);
  text-align: center;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.stat {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 22px;
}

.stat strong {
  display: block;
  font-size: 2rem;
  color: var(--accent);
}

.stat span {
  color: var(--muted);
}

.section-heading {
  margin-bottom: 28px;
}

.section-heading p {
  max-width: 720px;
}

.grid {
  display: grid;
  gap: 18px;
}

.grid.three {
  grid-template-columns: repeat(3, 1fr);
}

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

.card,
.media-card,
.contact-card {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.card {
  min-height: 210px;
  padding: 24px;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.publication-list {
  margin-top: 18px;
}

.compact-card {
  min-height: 0;
  padding: 20px;
}

.compact-card h3 {
  font-size: 1rem;
}

.card.visual {
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 10%, transparent), transparent 54%),
    var(--panel);
}

.card:hover,
.media-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
}

.card a {
  display: inline-block;
  margin-top: 8px;
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
}

.timeline-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.timeline-list li {
  border-top: 2px solid var(--accent);
  background: var(--panel);
  padding: 20px;
}

.timeline-list span {
  font-weight: 700;
}

.media-card {
  min-height: 92px;
  display: grid;
  place-items: center;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
}

.contact-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: clamp(24px, 5vw, 42px);
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 22px;
  padding: 34px 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.site-footer strong {
  color: var(--text);
}

@media (max-width: 860px) {
  .site-header {
    align-items: flex-start;
  }

  .site-nav {
    display: none;
  }

  .hero,
  .grid.three,
  .grid.four,
  .stats,
  .timeline-list {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 56px;
  }

  .contact-card {
    align-items: flex-start;
    flex-direction: column;
  }
}