:root {
  color-scheme: light;
  --background: #fbfcfa;
  --surface: #ffffff;
  --text: #263129;
  --muted: #69716b;
  --rule: #dfe4df;
  --accent: #315c3a;
  --danger: #7a433d;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--background);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background: var(--background);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

[hidden] {
  display: none !important;
}

.landing {
  width: min(100%, 48.75rem);
  min-height: 100vh;
  min-height: 100svh;
  margin: 0 auto;
  padding: clamp(3rem, 8vh, 5rem) 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}

.landing h1 {
  margin: 0;
  color: #222;
  font-size: clamp(3.25rem, 10vw, 4rem);
  font-weight: 300;
  letter-spacing: -.035em;
  line-height: 1.05;
}

.platform-name {
  margin: .625rem 0 0;
  color: #666;
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1.3;
}

.tagline {
  margin: 2.5rem 0;
  color: #222;
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.35;
}

.proposition p {
  margin: 0;
  color: #444;
  font-size: 1.2rem;
  line-height: 1.7;
}

.proposition p + p {
  margin-top: 1.5rem;
}

.alpha-status {
  margin: 2.5rem 0 0;
  color: #666;
  font-size: 1rem;
  line-height: 1.5;
}

.login {
  margin-top: 1.25rem;
}

.login-control {
  min-height: 2.75rem;
  padding: .55rem 1.2rem;
  border: 1px solid var(--muted);
  border-radius: .2rem;
  color: var(--text);
  background: transparent;
  cursor: pointer;
}

.login-control:hover {
  border-color: var(--text);
  background: #f3f4f1;
}

.landing footer {
  margin-top: 3.75rem;
  color: #888;
  line-height: 1.45;
}

.shell {
  width: min(42rem, calc(100% - 3rem));
  margin: 0 auto;
  padding: clamp(4rem, 12vh, 8rem) 0 4rem;
  font-family: Georgia, "Times New Roman", serif;
}

.shell-heading h1 {
  margin: 0;
  font-size: clamp(2.5rem, 7vw, 3.5rem);
  font-weight: 400;
  letter-spacing: -.025em;
}

.welcome,
.unavailable h2 {
  margin: .45rem 0 0;
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--muted);
}

button,
a {
  font: inherit;
}

button {
  min-height: 2.75rem;
  padding: .55rem 1.1rem;
  border: 1px solid var(--accent);
  border-radius: .2rem;
  color: var(--surface);
  background: var(--accent);
  cursor: pointer;
}

button:disabled {
  cursor: default;
  opacity: .55;
}

a {
  color: var(--accent);
  text-underline-offset: .18em;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

hr {
  margin: 2.25rem 0;
  border: 0;
  border-top: 1px solid var(--rule);
}

dl {
  display: grid;
  grid-template-columns: minmax(8.5rem, 11rem) minmax(0, 1fr);
  gap: 1.15rem 2rem;
  margin: 0;
}

dt {
  color: var(--muted);
}

dd {
  margin: 0;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

li + li {
  margin-top: .25rem;
}

.quiet {
  color: var(--muted);
}

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

.not-ready {
  color: var(--danger);
}

.explore-link {
  font-size: 1.08rem;
}

.explore .quiet {
  margin: .25rem 0 0;
}

.logout {
  margin-top: 2.75rem;
}

.quiet-action {
  min-height: auto;
  padding: 0;
  border: 0;
  color: var(--muted);
  background: transparent;
  text-decoration: underline;
  text-underline-offset: .18em;
}

@media (max-width: 34rem) {
  .landing {
    width: 100%;
    padding: 3rem 1.25rem;
  }

  .platform-name {
    font-size: 1.3rem;
  }

  .tagline {
    margin: 2rem 0;
    font-size: 1.35rem;
  }

  .proposition p {
    font-size: 1.075rem;
  }

  .alpha-status {
    margin-top: 2rem;
  }

  .landing footer {
    margin-top: 3rem;
  }

  .shell {
    width: min(100% - 2rem, 42rem);
    padding-top: 3rem;
  }

  dl {
    grid-template-columns: 1fr;
    gap: .25rem;
  }

  dd + dt {
    margin-top: 1rem;
  }
}