:root {
  --black: #000000;
  --panel: #0b0b14;
  --line: #2a2a3a;
  --text: #d7d7d7;
  --muted: #9a9aa8;
  --cyan: #00d7d7;
  --yellow: #ffff00;
  --magenta: #ff00ff;
  --green: #00d700;
  --red: #ff3030;
  --mono: "Consolas", "DejaVu Sans Mono", "Courier New", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--black);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
}

img {
  image-rendering: pixelated;
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--cyan);
}

a:hover,
a:focus-visible {
  color: var(--yellow);
}

code {
  font-family: var(--mono);
  color: var(--yellow);
}

.masthead {
  text-align: center;
  padding: 48px 16px 0;
  background: linear-gradient(var(--black), var(--panel));
}

.banner {
  width: min(736px, 100%);
  margin: 0 auto;
}

.tagline {
  margin: 24px auto 0;
  max-width: 40em;
  font-size: 1.15em;
  color: var(--cyan);
}

nav {
  position: sticky;
  top: 0;
  z-index: 1;
  padding: 24px 16px;
  background: var(--panel);
  border-bottom: 4px solid var(--yellow);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 24px;
  font-family: var(--sans);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

nav a {
  text-decoration: none;
  color: var(--yellow);
}

nav a:hover,
nav a:focus-visible {
  color: var(--black);
  background: var(--cyan);
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 16px;
}

section {
  padding: 48px 0 16px;
  scroll-margin-top: 60px;
}

h2 {
  font-family: var(--sans);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--yellow);
  font-size: 1.6em;
  margin: 0 0 16px;
}

h3 {
  font-family: var(--sans);
  color: var(--green);
  font-size: 1.1em;
  margin: 0 0 8px;
}

section > p {
  max-width: 48em;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

figure {
  margin: 0;
}

figure img {
  width: 100%;
  border: 2px solid var(--line);
}

figcaption {
  margin-top: 8px;
  font-size: 0.9em;
  color: var(--muted);
}

.facts {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 10px 24px;
  margin: 0;
  max-width: 48em;
}

.facts dt {
  font-family: var(--sans);
  text-transform: uppercase;
  color: var(--green);
}

.facts dd {
  margin: 0;
}

.steps {
  max-width: 48em;
  padding-left: 1.4em;
}

.steps li + li {
  margin-top: 8px;
}

.links {
  list-style: none;
  margin: 0;
  padding: 0;
}

.links li {
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
}

.links a {
  font-family: var(--sans);
}

.downloads {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0 32px;
}

.downloads th,
.downloads td {
  text-align: left;
  vertical-align: top;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
}

.downloads th {
  font-family: var(--sans);
  text-transform: uppercase;
  color: var(--magenta);
  font-weight: normal;
}

.downloads td:first-child {
  font-family: var(--sans);
  color: var(--yellow);
  white-space: nowrap;
}

.downloads a {
  font-family: var(--sans);
  white-space: nowrap;
}

footer {
  margin-top: 48px;
  padding: 24px 16px;
  text-align: center;
  font-family: var(--sans);
  color: var(--muted);
  border-top: 4px solid var(--yellow);
}

footer p {
  margin: 0;
}

@media (max-width: 600px) {
  body {
    font-size: 16px;
  }

  .masthead {
    padding-top: 32px;
  }

  nav {
    padding: 12px 16px;
  }

  section {
    scroll-margin-top: 100px;
  }

  .facts {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .facts dd {
    margin-bottom: 10px;
  }

  .downloads thead {
    display: none;
  }

  .downloads tr {
    display: block;
    border-bottom: 1px solid var(--line);
    padding: 8px 0;
  }

  .downloads td {
    display: block;
    border: 0;
    padding: 2px 0;
  }

  .downloads a {
    white-space: normal;
    word-break: break-all;
  }
}