:root {
  color-scheme: light dark;
  --background: #090b0c;
  --panel: #121619;
  --text: #f4f6f7;
  --muted: #aeb7bd;
  --blue: #4ecbff;
  --orange: #ffa638;
  --rule: #2c3439;
}

* { box-sizing: border-box; }

html { background: var(--background); }

body {
  margin: 0;
  color: var(--text);
  background: var(--background);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

header,
main,
footer {
  width: min(46rem, calc(100% - 2rem));
  margin-inline: auto;
}

header { padding: 3.5rem 0 1.5rem; }
main { padding-bottom: 3rem; }
footer {
  border-top: 1px solid var(--rule);
  padding: 1.25rem 0 2.5rem;
  color: var(--muted);
  font-size: .9rem;
}

.brand {
  margin: 0;
  font-size: clamp(2rem, 8vw, 3.3rem);
  font-weight: 250;
  letter-spacing: -.05em;
}

.brand-open { color: var(--blue); }
.brand-sol { color: var(--orange); font-weight: 700; }
.tagline { color: var(--orange); letter-spacing: .12em; text-transform: uppercase; }
.lede { max-width: 39rem; color: var(--muted); font-size: 1.1rem; }
.updated { color: var(--muted); font-size: .9rem; }
.byline { margin-top: -.25rem; color: var(--blue); font-weight: 650; }

nav { margin-top: 1.5rem; }
nav a { margin-right: 1rem; }

h1, h2 { line-height: 1.2; }
h1 { margin-bottom: .4rem; }
h2 { margin-top: 2.2rem; color: var(--orange); font-size: 1.2rem; }
h3 { margin-top: 1.7rem; font-size: 1rem; }

a { color: var(--blue); text-underline-offset: .18em; }
a:hover { text-decoration-thickness: 2px; }

.card {
  margin: 1.25rem 0;
  padding: 1.25rem;
  border: 1px solid var(--rule);
  border-radius: 16px;
  background: var(--panel);
}

.button {
  display: inline-block;
  padding: .65rem 1rem;
  border-radius: 10px;
  color: #071014;
  background: var(--blue);
  font-weight: 700;
  text-decoration: none;
}

.actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  margin: 1.5rem 0 2rem;
  border: 1px solid var(--rule);
  border-radius: 16px;
  background: var(--rule);
}

.facts div {
  padding: 1rem 1.1rem;
  background: var(--panel);
}

.facts dt {
  color: var(--muted);
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.facts dd {
  margin: .2rem 0 0;
  font-weight: 650;
}

.note {
  padding-left: 1rem;
  border-left: 3px solid var(--blue);
  color: var(--muted);
}

.sources { padding-left: 1.2rem; }

.machine {
  margin: 2rem 0;
}

.machine img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--rule);
  border-radius: 16px;
  background: #fff;
}

.machine figcaption {
  margin-top: .7rem;
  color: var(--muted);
  font-size: .85rem;
  line-height: 1.45;
}

li + li { margin-top: .45rem; }
code { color: var(--orange); }

@media (max-width: 34rem) {
  .facts { grid-template-columns: 1fr; }
}

@media (prefers-color-scheme: light) {
  :root {
    --background: #f7f7f4;
    --panel: #ffffff;
    --text: #17191a;
    --muted: #596269;
    --blue: #006ea8;
    --orange: #9a4b00;
    --rule: #d8dcde;
  }
}