:root {
  --paper: oklch(0.985 0.005 80);
  --paper2: oklch(0.96 0.006 75);
  --rule: oklch(0.88 0.01 70);
  --ink: oklch(0.18 0.012 60);
  --ink2: oklch(0.42 0.012 60);
  --ink3: oklch(0.62 0.01 60);
  --ember: oklch(0.62 0.14 35);
  --emberBg: oklch(0.95 0.04 35);
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: oklch(0.18 0.008 60);
    --paper2: oklch(0.22 0.008 60);
    --rule: oklch(0.32 0.01 60);
    --ink: oklch(0.94 0.005 80);
    --ink2: oklch(0.68 0.008 70);
    --ink3: oklch(0.50 0.008 65);
    --ember: oklch(0.72 0.13 35);
    --emberBg: oklch(0.28 0.06 35);
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

::selection { background: oklch(0.62 0.14 35 / 0.25); }

a { color: var(--ember); text-decoration: none; border-bottom: 0.5px solid currentColor; }
a:hover { opacity: 0.7; }

.frame {
  max-width: 760px;
  margin: 0 auto;
  padding: 56px 32px 96px;
}

.meta {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink2);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: 18px;
  border-bottom: 0.5px solid var(--rule);
  margin-bottom: 56px;
}
.topbar a { color: var(--ink2); border-bottom: 0; }
.topbar a:hover { color: var(--ink); }
.topbar .brand { color: var(--ink); }
.topbar nav { display: flex; gap: 28px; }

h1 {
  font-family: "Instrument Serif", Georgia, serif;
  font-weight: 400;
  font-size: 88px;
  line-height: 0.92;
  letter-spacing: -0.025em;
  margin: 0 0 32px;
  color: var(--ink);
}
h1 em { font-style: italic; color: var(--ember); }

h2 {
  font-family: "Instrument Serif", Georgia, serif;
  font-weight: 400;
  font-size: 40px;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 64px 0 18px;
  color: var(--ink);
}
h2 em { font-style: italic; color: var(--ember); }

h3 {
  font-size: 14px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink2);
  font-weight: 500;
  margin: 32px 0 8px;
}

p { margin: 0 0 18px; max-width: 60ch; }
p.lede { font-size: 22px; line-height: 1.45; color: var(--ink2); max-width: 56ch; }

.hero {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 64px;
}

.cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--ink);
  color: var(--paper);
  padding: 14px 22px;
  border-radius: 4px;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 0;
  cursor: pointer;
  align-self: flex-start;
}
.cta:hover { opacity: 0.85; }

.cta.secondary {
  background: transparent;
  color: var(--ink2);
  border: 0.5px solid var(--rule);
}

.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }

.rules {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.rules li {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 24px;
  align-items: baseline;
  padding: 22px 0;
  border-bottom: 0.5px solid var(--rule);
}
.rules li .num {
  font-family: "Instrument Serif", Georgia, serif;
  font-style: italic;
  font-size: 36px;
  color: var(--ember);
}
.rules li h4 {
  margin: 0 0 4px;
  font-size: 18px;
  color: var(--ink);
  font-weight: 500;
}
.rules li p {
  margin: 0;
  color: var(--ink2);
  font-size: 15px;
  line-height: 1.5;
}

ul.plain {
  list-style: none;
  padding: 0;
  margin: 0 0 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
ul.plain li {
  display: flex;
  gap: 12px;
  font-size: 15px;
  color: var(--ink2);
}
ul.plain li::before { content: "·"; color: var(--ember); }

.faq dt {
  font-weight: 500;
  margin-top: 24px;
  color: var(--ink);
  font-size: 16px;
}
.faq dd {
  margin: 6px 0 0;
  color: var(--ink2);
  font-size: 15px;
  line-height: 1.55;
}

footer {
  margin-top: 96px;
  padding-top: 24px;
  border-top: 0.5px solid var(--rule);
  display: flex;
  justify-content: space-between;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink2);
  flex-wrap: wrap;
  gap: 16px;
}
footer a { color: var(--ink2); border-bottom: 0; }
footer a:hover { color: var(--ink); }

.callout {
  background: var(--paper2);
  border: 0.5px solid var(--rule);
  border-left: 3px solid var(--ember);
  padding: 18px 22px;
  margin: 32px 0;
  font-size: 15px;
  color: var(--ink);
  border-radius: 4px;
}

code {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.92em;
  background: var(--paper2);
  padding: 2px 6px;
  border-radius: 3px;
  color: var(--ink);
}

.icon-mark {
  width: 64px;
  height: 64px;
  border-radius: 12px;
  background: var(--paper2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: "Instrument Serif", Georgia, serif;
  font-style: italic;
  font-size: 44px;
  color: var(--ember);
  margin-bottom: 24px;
}

@media (max-width: 540px) {
  .frame { padding: 36px 22px 72px; }
  h1 { font-size: 56px; }
  h2 { font-size: 30px; }
  p.lede { font-size: 18px; }
  .topbar nav { gap: 18px; }
  .rules li { grid-template-columns: 36px 1fr; gap: 16px; }
  .rules li .num { font-size: 28px; }
}