:root {
  color-scheme: light dark;
  --bg: #f2f2f7;
  --card: rgb(255 255 255 / 0.72);
  --text: #1d1d1f;
  --muted: #6c6c70;
  --accent: #1e6ef4;
  --border: rgb(0 0 0 / 0.08);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1c1e;
    --card: rgb(44 44 46 / 0.72);
    --text: #f5f5f7;
    --muted: #aeaeb2;
    --accent: #5cb8ff;
    --border: rgb(255 255 255 / 0.1);
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px 16px;
  color: var(--text);
  background:
    radial-gradient(60rem 30rem at 20% -10%, rgb(59 140 255 / 0.25), transparent),
    radial-gradient(50rem 30rem at 110% 110%, rgb(20 80 200 / 0.2), transparent),
    var(--bg);
}
.card {
  width: min(100%, 36rem);
  padding: 32px 28px;
  border-radius: 28px;
  text-align: center;
  background: var(--card);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  backdrop-filter: blur(24px) saturate(180%);
  box-shadow: inset 0 0.5px 0 rgb(255 255 255 / 0.5), 0 0 0 0.5px var(--border), 0 20px 60px rgb(0 0 0 / 0.12);
}
.icon { width: 96px; height: 96px; }
h1 { margin: 8px 0 4px; font-size: 2rem; letter-spacing: -0.02em; }
.lead { margin: 0 auto 24px; max-width: 28rem; line-height: 1.45; color: var(--muted); }
.primary { display: grid; gap: 10px; justify-items: center; margin-bottom: 20px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 28px;
  border-radius: 999px;
  font-size: 1.05rem;
  font-weight: 600;
  text-decoration: none;
  color: #fff;
  background: linear-gradient(180deg, rgb(255 255 255 / 0.22), rgb(255 255 255 / 0) 60%), var(--accent);
  box-shadow: inset 0 0.5px 0 rgb(255 255 255 / 0.45), 0 2px 8px rgb(0 0 0 / 0.18);
}
@media (prefers-color-scheme: dark) { .button { color: #0b1220; } }
.button:focus-visible, a:focus-visible, .link-button:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.secondary-link { color: var(--accent); font-size: 0.95rem; }
.muted { color: var(--muted); font-size: 0.9rem; }
.all { margin: 8px 0 20px; text-align: left; }
.all { text-align: center; }
.list { text-align: left; }
.link-button {
  padding: 6px 12px;
  border: 0;
  border-radius: 999px;
  background: none;
  color: var(--accent);
  font: inherit;
  cursor: pointer;
}
.link-button:hover { background: rgb(127 127 127 / 0.12); }
.list { list-style: none; margin: 12px 0 0; padding: 0; display: grid; gap: 6px; }
.list a {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 12px;
  color: var(--text);
  text-decoration: none;
  background: rgb(127 127 127 / 0.1);
}
.list .size { color: var(--muted); white-space: nowrap; }
.help { text-align: left; border-top: 1px solid var(--border); padding-top: 16px; }
.help h2 { font-size: 1.05rem; margin: 0 0 8px; }
.help dt { font-weight: 600; margin-top: 10px; }
.help dd { margin: 2px 0 0; line-height: 1.45; color: var(--muted); }
code { font-size: 0.9em; }