:root {
  --bg-top: #05070d;
  --bg-mid: #070d19;
  --bg-bottom: #130a28;
  --text: #edf2fb;
  --muted: #98a5bc;
  --line: #1f2d45;
  --accent: #68c8ef;
  --accent-faint: #274862;
}

* {
  box-sizing: border-box;
}

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

body {
  min-height: 100vh;
  background:
    radial-gradient(1200px 700px at 50% -15%, #111b34 0%, transparent 62%),
    radial-gradient(950px 540px at 50% 105%, #1a0a34 0%, transparent 72%),
    linear-gradient(180deg, var(--bg-top) 0%, var(--bg-mid) 56%, var(--bg-bottom) 100%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
  line-height: 1.62;
  text-rendering: optimizeLegibility;
}

.site {
  max-width: 820px;
  margin: 0 auto;
  padding: 56px 24px 64px;
}

header {
  margin: 0 0 2.5rem;
}

.brand {
  display: inline-block;
  color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-decoration: none;
  text-transform: uppercase;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1rem;
}

nav a {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.94rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  padding-bottom: 0.2rem;
  border-bottom: 1px solid transparent;
  transition: color 140ms ease, border-color 140ms ease;
}

nav a:hover,
nav a:focus {
  color: var(--text);
  border-color: var(--line);
}

nav a.active {
  color: var(--accent);
  border-color: var(--accent-faint);
}

main {
  margin-top: 0.25rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

h1 {
  margin: 0 0 1rem;
  color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: clamp(1.85rem, 4.6vw, 3rem);
  font-weight: 700;
  letter-spacing: 0.03em;
  line-height: 1.16;
}

h2 {
  margin: 2rem 0 0.6rem;
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

p,
li {
  color: var(--text);
}

p {
  margin: 0.8rem 0;
}

ul,
ol {
  margin: 0.4rem 0 0 1.25rem;
  padding: 0;
}

li {
  margin: 0.3rem 0;
}

a {
  color: var(--accent);
  text-decoration-color: rgba(104, 200, 239, 0.45);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.small {
  color: var(--muted);
  font-size: 0.92rem;
}

footer {
  margin-top: 3.5rem;
  padding-top: 1.15rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.86rem;
  text-align: left;
}

footer p {
  margin: 0;
}

@media (max-width: 640px) {
  .site {
    padding: 48px 18px 56px;
  }

  nav {
    gap: 0.85rem;
  }

  h1 {
    font-size: clamp(1.7rem, 9vw, 2.35rem);
  }

  main {
    padding-top: 1.6rem;
  }
}

.store-badge-wrap {
  margin-top: 0.65rem;
}

.app-store-badge {
  display: inline-block;
  border: 0;
  line-height: 0;
  text-decoration: none;
}

.app-store-badge img {
  display: block;
  width: auto;
  height: 54px;
  max-width: 100%;
}

.app-store-badge:hover img,
.app-store-badge:focus img {
  opacity: 0.94;
}