:root {
  --paper: #faf7f1;
  --paper-2: #f2ede3;
  --ink: #191510;
  --ink-2: #5d5347;
  --ink-3: #7d7263;
  --rule: #ded5c6;
  --rule-soft: #e9e2d6;
  --flag: #a93a20;
  --flag-deep: #8d2f19;
  --sans: "Google Sans Flex", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  background: var(--paper);
  scrollbar-color: var(--ink-3) var(--paper-2);
}

body {
  margin: 0;
  min-height: 100svh;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--flag); color: var(--paper); }

:focus-visible {
  outline: 2px solid var(--flag);
  outline-offset: 3px;
  border-radius: 3px;
}

a { color: var(--flag-deep); text-decoration-thickness: 1px; text-underline-offset: 3px; }

.shell {
  width: 100%;
  max-width: 34rem;
  min-height: 100svh;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  padding: clamp(2.25rem, 9vw, 4rem) clamp(1.25rem, 6vw, 2rem) 3.5rem;
}

/* Masthead ---------------------------------------------------------- */

.crest {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  color: var(--flag);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin: 0 0 1.75rem;
}

.crest svg { flex: none; }

h1 {
  font-weight: 700;
  font-size: clamp(2.75rem, 13.5vw, 4rem);
  line-height: 0.96;
  letter-spacing: -0.04em;
  margin: 0;
  text-wrap: balance;
}

.lede {
  margin: 1.25rem 0 0;
  font-size: 1.125rem;
  line-height: 1.5;
  max-width: 34ch;
}

/* Download ---------------------------------------------------------- */

.get { margin-top: clamp(1.75rem, 7vw, 2.5rem); }

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  min-height: 3.75rem;
  padding: 1rem 1.5rem;
  border-radius: 0.5rem;
  background: var(--flag);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
  box-shadow: 0 12px 28px -14px rgba(169, 58, 32, 0.7);
  transition: transform 0.32s var(--ease), background-color 0.32s var(--ease), box-shadow 0.32s var(--ease);
}

.btn svg { flex: none; }

.btn:hover {
  background: var(--flag-deep);
  transform: translateY(-2px);
  box-shadow: 0 20px 38px -16px rgba(169, 58, 32, 0.6);
}

.btn:active { transform: translateY(0); }

.meta {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.4rem 1.25rem;
  margin: 1.25rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.5;
  font-variant-numeric: tabular-nums;
}

.meta dt { color: var(--ink-3); }
.meta dd { margin: 0; color: var(--ink-2); }

.meta .hash {
  grid-column: 1 / -1;
  font-size: 0.6875rem;
  letter-spacing: 0.02em;
  line-height: 1.6;
  word-break: break-all;
  color: var(--ink-3);
  padding-top: 0.4rem;
  margin-top: 0.2rem;
  border-top: 1px solid var(--rule-soft);
}

.fresh {
  margin: 0.75rem 0 0;
  font-size: 0.75rem;
  color: var(--ink-3);
}

.fresh.is-stale { opacity: 0.75; }

/* Footer ------------------------------------------------------------ */

footer {
  margin-top: auto;
  padding-top: clamp(2rem, 8vw, 3rem);
  border-top: 1px solid var(--rule);
  color: var(--ink-3);
  font-size: 0.8125rem;
}

footer p { margin: 0 0 0.375rem; }
footer p:last-child { margin-bottom: 0; }

/* Motion ------------------------------------------------------------ */

.rise { animation: rise 0.9s var(--ease) backwards; }
.crest.rise { animation-delay: 0s; }
h1.rise { animation-delay: 0.07s; }
.lede.rise { animation-delay: 0.14s; }
.get.rise { animation-delay: 0.21s; }

@keyframes rise {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  .rise { animation: none; }
  .btn { transition: none; }
}