:root {
  --bg: #0b0d10;
  --bg-elev: #14181d;
  --fg: #e6e8eb;
  --muted: #8a939c;
  --border: #232830;
  --accent: #6aa9ff;
  --radius: 12px;
  --max-width: 560px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #fafafa;
    --bg-elev: #ffffff;
    --fg: #14181d;
    --muted: #5a6470;
    --border: #e4e7eb;
    --accent: #1f6feb;
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  padding: 2.5rem 1.5rem;
  text-align: center;
}

.hero {
  margin-bottom: 2.5rem;
}

.mark {
  width: 64px;
  height: 64px;
  border-radius: var(--radius);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  margin: 0 auto 1.25rem;
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 600;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.muted {
  color: var(--muted);
  font-weight: 400;
}

.tagline {
  margin: 0;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.95rem;
}

.links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}

.link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.125rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--fg);
  text-decoration: none;
  font-size: 0.95rem;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.link:hover,
.link:focus-visible {
  border-color: var(--accent);
  transform: translateY(-1px);
  outline: none;
}

.link:focus-visible {
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 30%, transparent);
}

.icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--muted);
}

.link:hover .icon,
.link:focus-visible .icon {
  color: var(--accent);
}

.footer {
  color: var(--muted);
  font-size: 0.85rem;
}