:root {
  color-scheme: dark;
  --accent: #18d6be;
  --panel: #101c2a;
  --muted: #a9bbc8;
  --text: #f7fbfc;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at 15% 0%, #0e4a50 0, #08111b 42%, #050a10 100%);
  color: var(--text);
}

main {
  width: min(920px, calc(100% - 40px));
  min-height: 100vh;
  margin: 0 auto;
  display: grid;
  place-items: center;
  padding: 56px 0;
}

article {
  position: relative;
  width: 100%;
  padding: clamp(28px, 7vw, 72px);
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 36px;
  background: rgba(9, 20, 31, .82);
  box-shadow: 0 28px 90px rgba(0, 0, 0, .35);
  backdrop-filter: blur(18px);
}

.language-nav {
  position: absolute;
  top: 24px;
  right: 24px;
  display: flex;
  gap: 6px;
}

.language-nav a {
  min-width: 40px;
  padding: 9px 11px;
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 999px;
  color: var(--muted);
  font-size: .78rem;
  font-weight: 800;
  text-align: center;
  text-decoration: none;
}

.language-nav a[aria-current="page"] {
  border-color: rgba(24, 214, 190, .5);
  background: rgba(24, 214, 190, .14);
  color: var(--accent);
}

.brand {
  display: flex;
  align-items: center;
  gap: 18px;
  margin: 0 0 52px;
}

.brand img {
  width: 70px;
  height: 70px;
  border-radius: 20px;
  box-shadow: 0 14px 36px rgba(24, 214, 190, .22);
}

.brand strong {
  font-size: 1.35rem;
  letter-spacing: -.02em;
}

h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(2.7rem, 8vw, 5.7rem);
  line-height: .95;
  letter-spacing: -.07em;
}

.accent { color: var(--accent); }

p {
  max-width: 650px;
  margin: 30px 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2.5vw, 1.3rem);
  line-height: 1.65;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 44px;
}

.actions a {
  display: inline-flex;
  align-items: center;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 750;
  text-decoration: none;
}

.actions .primary {
  background: var(--accent);
  color: #06120f;
}

.actions .secondary {
  border: 1px solid rgba(255, 255, 255, .12);
  background: var(--panel);
  color: #eaf4f5;
}

a:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 3px;
}

footer {
  margin-top: 52px;
  color: #8195a2;
  font-size: .9rem;
}

@media (max-width: 560px) {
  main { width: min(100% - 24px, 920px); padding: 12px 0; }
  article { border-radius: 26px; }
  .language-nav { top: 18px; right: 18px; }
  .brand { margin-top: 46px; margin-bottom: 38px; }
  .actions { display: grid; }
  .actions a { justify-content: center; text-align: center; }
}