:root {
  color-scheme: dark;
  --background: #080b12;
  --surface: #101621;
  --surface-light: #151d2a;
  --text: #f4f7fb;
  --muted: #a9b4c6;
  --accent: #67e8b4;
  --border: rgba(255, 255, 255, 0.1);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--background);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 50% -15%, rgba(103, 232, 180, 0.14), transparent 38rem),
    var(--background);
}

main,
footer {
  width: min(68rem, calc(100% - 2rem));
  margin-inline: auto;
}

.hero {
  display: flex;
  min-height: 70vh;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 5rem 0 4rem;
  text-align: center;
}

.mark {
  display: grid;
  width: 4.5rem;
  height: 4.5rem;
  margin-bottom: 1.5rem;
  place-items: center;
  border: 1px solid rgba(103, 232, 180, 0.45);
  border-radius: 1.25rem;
  color: var(--background);
  background: var(--accent);
  box-shadow: 0 0 3rem rgba(103, 232, 180, 0.2);
  font-size: 2rem;
  font-weight: 900;
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.2em;
}

h1 {
  margin: 0.65rem 0 1rem;
  font-size: clamp(4.5rem, 17vw, 9rem);
  line-height: 0.9;
  letter-spacing: -0.065em;
}

.summary {
  max-width: 40rem;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  line-height: 1.65;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 2rem;
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(16, 22, 33, 0.72);
  font-size: 0.85rem;
}

.status-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0.75rem var(--accent);
}

h2 {
  margin: 0 0 1.5rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.03em;
}

.principles,
.notice {
  padding: 4rem 0;
  border-top: 1px solid var(--border);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

article,
.notice p {
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: linear-gradient(145deg, var(--surface-light), var(--surface));
}

article {
  padding: 1.5rem;
}

article h3 {
  margin: 0 0 0.7rem;
  font-size: 1rem;
}

article p,
.notice p {
  color: var(--muted);
  line-height: 1.65;
}

article p {
  margin: 0;
}

.notice p {
  margin: 0;
  padding: 1.5rem;
  border-left: 3px solid var(--accent);
}

footer {
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.82rem;
  text-align: center;
}

footer p {
  margin: 0;
}

@media (max-width: 44rem) {
  .hero {
    min-height: 62vh;
  }

  .cards {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
  }
}