:root {
  color-scheme: dark;
  --background: #0b1118;
  --surface: #141d27;
  --text: #eef4f8;
  --muted: #a8b6c5;
  --border: #2d3b49;
  --accent: #65c6e8;
  --accent-strong: #9bdcf2;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  min-height: 100vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  background: var(--background);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: inherit;
}

.shell {
  width: min(100% - 2rem, 72rem);
  margin-inline: auto;
}

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.header-content {
  min-height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.brand-mark {
  width: 2.25rem;
  height: 2.25rem;
  display: grid;
  place-items: center;
  border-radius: 0.65rem;
  background: var(--accent);
  color: #071118;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}

.current-page {
  color: var(--accent-strong);
  font-size: 0.95rem;
  font-weight: 650;
}

.main-content {
  flex: 1;
  display: grid;
  align-items: center;
  padding-block: clamp(4rem, 12vw, 9rem);
}

.welcome {
  max-width: 46rem;
  padding: clamp(2rem, 5vw, 4rem);
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: var(--surface);
  box-shadow: 0 1.25rem 3rem rgb(0 0 0 / 28%);
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 6vw, 3.75rem);
  line-height: 1.1;
  letter-spacing: -0.035em;
}

.intro {
  max-width: 39rem;
  margin: 1.25rem 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
}

.site-footer {
  padding-block: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.875rem;
}

@media (max-width: 36rem) {
  .header-content {
    min-height: 4rem;
  }

  .brand-mark {
    display: none;
  }

  .welcome {
    border-radius: 0.75rem;
  }
}