:root {
  color-scheme: dark;
  --bg: #05070f;
  --text: #eef8ff;
  --muted: #9fb4c7;
  --cyan: #68e6ff;
  --mint: #71ffd9;
  --violet: #9c84ff;
  --panel: rgba(8, 18, 34, 0.72);
  --line: rgba(145, 224, 255, 0.22);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 56px);
  background: linear-gradient(180deg, rgba(5, 7, 15, 0.84), rgba(5, 7, 15, 0));
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(104, 230, 255, 0.12);
  color: var(--cyan);
  font-size: 13px;
}

.nav {
  display: flex;
  gap: 20px;
  color: var(--muted);
  font-size: 14px;
}

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

.lang-toggle {
  min-width: 76px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(8, 18, 34, 0.7);
  color: var(--text);
  cursor: pointer;
}

.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  padding: 128px clamp(20px, 6vw, 92px) 74px;
}

.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(5, 7, 15, 0.92), rgba(5, 7, 15, 0.52), rgba(5, 7, 15, 0.18)),
    linear-gradient(0deg, var(--bg), rgba(5, 7, 15, 0.05) 34%);
}

.hero-content {
  position: relative;
  max-width: 880px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 16px;
  color: var(--mint);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  line-height: 0.98;
  letter-spacing: 0;
}

h1 {
  max-width: 760px;
  font-size: clamp(56px, 9vw, 132px);
}

h2 {
  font-size: clamp(34px, 5vw, 72px);
}

.subtitle {
  max-width: 740px;
  margin: 26px 0 0;
  color: #c8d9e8;
  font-size: clamp(18px, 2.3vw, 25px);
  line-height: 1.5;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.primary-link,
.secondary-link {
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  border-radius: 8px;
  padding: 0 18px;
  font-weight: 700;
}

.primary-link {
  background: linear-gradient(135deg, var(--cyan), var(--mint));
  color: #03121c;
}

.secondary-link {
  border: 1px solid var(--line);
  color: var(--text);
  background: rgba(8, 18, 34, 0.48);
}

.intro-band,
.content-section,
.essay,
.directions {
  padding: 88px clamp(20px, 6vw, 92px);
}

.intro-grid,
.essay {
  display: grid;
  grid-template-columns: minmax(240px, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(32px, 6vw, 84px);
}

.intro-grid p,
.essay-copy p,
.quote-panel p {
  margin: 0;
  color: #c8d9e8;
  font-size: 20px;
  line-height: 1.72;
}

.section-heading {
  max-width: 920px;
  margin-bottom: 34px;
}

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

.signal-grid article,
.quote-panel,
.posture-list div {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.24);
}

.signal-grid article {
  min-height: 230px;
  padding: 24px;
}

.signal-grid span {
  display: block;
  color: var(--cyan);
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 26px;
}

.signal-grid p,
.posture-list p {
  margin: 0;
  color: var(--muted);
  line-height: 1.62;
}

.essay {
  align-items: start;
  background:
    radial-gradient(circle at 20% 10%, rgba(104, 230, 255, 0.12), transparent 32%),
    radial-gradient(circle at 80% 30%, rgba(156, 132, 255, 0.13), transparent 32%);
}

.essay-copy {
  display: grid;
  gap: 24px;
}

.quote-panel {
  position: sticky;
  top: 96px;
  padding: 34px;
}

.quote-panel p {
  color: var(--text);
  font-size: 28px;
}

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

.posture-list div {
  padding: 24px;
}

.posture-list strong {
  display: block;
  margin-bottom: 12px;
  color: var(--mint);
  font-size: 20px;
}

.direction-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.direction-grid span {
  min-height: 76px;
  display: flex;
  align-items: center;
  border: 1px solid rgba(113, 255, 217, 0.22);
  border-radius: 8px;
  padding: 16px;
  background: rgba(3, 18, 28, 0.72);
  color: #dffcff;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 28px clamp(20px, 6vw, 92px);
  border-top: 1px solid var(--line);
  color: var(--muted);
}

@media (max-width: 980px) {
  .signal-grid,
  .direction-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .intro-grid,
  .essay {
    grid-template-columns: 1fr;
  }

  .quote-panel {
    position: static;
  }
}

@media (max-width: 680px) {
  .site-header {
    align-items: flex-start;
  }

  .nav {
    display: none;
  }

  .hero {
    min-height: 86vh;
    padding-bottom: 44px;
  }

  .signal-grid,
  .posture-list,
  .direction-grid {
    grid-template-columns: 1fr;
  }

  .intro-band,
  .content-section,
  .essay,
  .directions {
    padding-top: 64px;
    padding-bottom: 64px;
  }

  .footer {
    flex-direction: column;
  }
}