:root {
  --face: #aaaaaa;
  --face2: #999999;
  --well: #cccccc;
  --ink: #000000;
  --hi: #ffffff;
  --shadow: #666666;
  --dim: #555555;
  --pat: #0066bb;
  --yellow: #ffff00;
  --red: #cc0000;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "IBM Plex Mono", "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  background:
    linear-gradient(180deg, #b8b8b8 0%, var(--face) 28%, #9a9a9a 100%);
  color: var(--ink);
  line-height: 1.5;
}

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

.face {
  max-width: 720px;
  margin: 0 auto;
  padding: 28px 20px 48px;
}

.top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--shadow);
  margin-bottom: 24px;
}

.brand {
  margin: 0;
  font-size: clamp(1.75rem, 5vw, 2.4rem);
  letter-spacing: 0.08em;
  font-weight: 700;
  text-shadow: 1px 1px 0 var(--hi);
}

.cred {
  margin: 0;
  font-size: 0.75rem;
  color: var(--dim);
}

.hero {
  margin-bottom: 36px;
}

.hero-visual {
  margin: 0 -4px 20px;
  background: var(--ink);
  border: 2px solid var(--shadow);
  box-shadow:
    inset 1px 1px 0 var(--dim),
    1px 1px 0 var(--hi);
  overflow: hidden;
}

.hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(1.15rem, 3.2vw, 1.45rem);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.lede {
  margin: 0;
  max-width: 42rem;
  font-size: 0.95rem;
}

.section {
  margin: 32px 0;
}

.section h2 {
  margin: 0 0 10px;
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dim);
}

.intro {
  margin: 0 0 16px;
  font-size: 0.9rem;
}

.dl-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.dl {
  background: var(--face2);
  border: 2px solid var(--shadow);
  box-shadow:
    inset 1px 1px 0 var(--hi),
    inset -1px -1px 0 var(--dim);
  padding: 14px 14px 16px;
}

.dl h3 {
  margin: 0 0 6px;
  font-size: 1rem;
  letter-spacing: 0.06em;
}

.dl p {
  margin: 0 0 12px;
  font-size: 0.8rem;
  color: var(--dim);
}

.dl.soon {
  opacity: 0.85;
}

.btn {
  display: inline-block;
  padding: 8px 12px;
  background: var(--face);
  color: var(--hi);
  text-decoration: none;
  border: 2px solid var(--shadow);
  box-shadow:
    inset 1px 1px 0 var(--hi),
    inset -1px -1px 0 var(--dim);
  font: inherit;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-shadow: 1px 1px 0 var(--dim);
  cursor: pointer;
}

.btn:hover,
.btn:focus-visible {
  background: var(--well);
  color: var(--ink);
  text-shadow: none;
  text-decoration: none;
}

.btn-disabled {
  opacity: 0.55;
  pointer-events: none;
  cursor: default;
}

.hint {
  margin: 10px 0 0;
  font-size: 0.7rem;
  color: var(--dim);
}

.panel {
  background: var(--well);
  border: 2px solid var(--shadow);
  box-shadow: inset 1px 1px 0 var(--dim);
  padding: 14px 16px;
}

.panel p {
  margin: 0 0 10px;
  font-size: 0.88rem;
}

.panel p:last-child {
  margin-bottom: 0;
}

.punch {
  font-weight: 700;
  letter-spacing: 0.04em;
}

.two-col {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.mono h3 {
  margin: 0 0 8px;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.mono pre {
  margin: 0 0 10px;
  font: inherit;
  font-size: 0.72rem;
  line-height: 1.55;
  white-space: pre-wrap;
}

.muted {
  margin: 0;
  font-size: 0.75rem;
  color: var(--dim);
}

.foot {
  margin-top: 40px;
  padding-top: 16px;
  border-top: 2px solid var(--shadow);
  font-size: 0.7rem;
  color: var(--dim);
}

.foot p { margin: 0; }

@media (max-width: 520px) {
  .face { padding: 18px 14px 36px; }
  .mono pre { font-size: 0.68rem; }
}