:root {
  color-scheme: dark;
  --space: #050a1d;
  --space-deep: #020511;
  --panel: rgba(13, 24, 58, 0.86);
  --line: #243c70;
  --cyan: #55e6ff;
  --blue: #268dff;
  --white: #f4f8ff;
  --muted: #aebde0;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--white);
  background:
    radial-gradient(circle at 18% 12%, rgba(36, 77, 166, 0.24), transparent 28rem),
    radial-gradient(circle at 86% 34%, rgba(96, 28, 151, 0.18), transparent 30rem),
    var(--space-deep);
  font: 16px/1.7 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
  color: var(--cyan);
  text-underline-offset: 0.2em;
}

a:hover,
a:focus-visible {
  color: #a5f4ff;
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: 27rem;
  display: grid;
  place-items: center;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 74% 35%, #1b75dc 0 1.1rem, #1252a5 1.15rem 1.75rem, transparent 1.8rem),
    radial-gradient(circle at 78% 28%, rgba(85, 230, 255, 0.24), transparent 9rem),
    linear-gradient(155deg, #071439 0%, var(--space) 64%, #150b38 100%);
}

.stars,
.stars::before,
.stars::after {
  position: absolute;
  inset: 0;
  content: "";
  background-image:
    radial-gradient(circle, rgba(255, 255, 255, 0.95) 0 1px, transparent 1.5px),
    radial-gradient(circle, rgba(85, 230, 255, 0.75) 0 1px, transparent 1.5px);
  background-position: 0 0, 2.4rem 3.2rem;
  background-size: 7rem 7rem, 9rem 9rem;
}

.stars::before {
  transform: translate(3rem, 1.4rem) scale(0.7);
  opacity: 0.55;
}

.stars::after {
  transform: translate(-4rem, 3.1rem) scale(0.4);
  opacity: 0.45;
}

.hero__content {
  position: relative;
  z-index: 1;
  width: min(100% - 2rem, 70rem);
  text-align: center;
}

.eyebrow,
.language-label {
  color: var(--cyan);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.22em;
}

h1 {
  margin: 0.25rem 0 0.6rem;
  color: var(--cyan);
  font-size: clamp(3.2rem, 11vw, 7.4rem);
  line-height: 0.95;
  letter-spacing: -0.055em;
  text-shadow: 0 0.08em 0 #1478b4, 0 0 2.5rem rgba(85, 230, 255, 0.25);
}

.subtitle {
  margin: 0 auto 2rem;
  color: var(--muted);
  font-size: clamp(1rem, 3vw, 1.3rem);
}

.language-nav {
  display: flex;
  justify-content: center;
  gap: 0.8rem;
}

.language-nav a {
  min-width: 7.2rem;
  padding: 0.65rem 1rem;
  border: 1px solid var(--cyan);
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  background: rgba(5, 10, 29, 0.72);
}

main {
  width: min(100% - 2rem, 70rem);
  margin: -2rem auto 4rem;
  position: relative;
  z-index: 2;
}

.summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--line);
  box-shadow: 0 1.5rem 4rem rgba(0, 0, 0, 0.32);
}

.summary div {
  min-width: 0;
  padding: 1.2rem;
  background: #09142f;
}

.summary span,
.summary strong,
.summary a {
  display: block;
}

.summary span {
  margin-bottom: 0.25rem;
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.summary a {
  overflow-wrap: anywhere;
  font-weight: 700;
}

article {
  margin-top: 3rem;
  padding: clamp(1.3rem, 5vw, 3.4rem);
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--panel);
  box-shadow: 0 1.5rem 4rem rgba(0, 0, 0, 0.18);
}

h2 {
  margin: 0.2rem 0 2rem;
  font-size: clamp(2rem, 6vw, 3.4rem);
  line-height: 1.1;
}

h3 {
  margin: 2.4rem 0 0.5rem;
  color: #d9e6ff;
  font-size: 1.18rem;
}

p,
li {
  color: #c9d5ee;
}

li + li {
  margin-top: 0.4rem;
}

.orbit-divider {
  height: 5rem;
  display: grid;
  place-items: center;
}

.orbit-divider span {
  width: 0.8rem;
  height: 0.8rem;
  border: 2px solid var(--cyan);
  border-radius: 50%;
  box-shadow: -3rem 0 0 -0.2rem var(--blue), 3rem 0 0 -0.2rem #e249d5;
}

footer {
  padding: 2.5rem 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  text-align: center;
  background: var(--space-deep);
}

footer p {
  margin: 0.2rem;
  color: var(--muted);
}

@media (max-width: 720px) {
  .hero {
    min-height: 22rem;
  }

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

  .summary div {
    padding: 1rem 1.2rem;
  }

  article {
    margin-top: 1.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}