:root {
  color-scheme: light;
  --ink: #14213d;
  --muted: #546179;
  --line: #d8dee9;
  --paper: #fbfcfe;
  --panel: #ffffff;
  --accent: #0f766e;
  --accent-dark: #115e59;
  --warn: #9f1239;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 5vw, 72px);
  border-bottom: 1px solid var(--line);
  background: rgba(251, 252, 254, 0.92);
  backdrop-filter: blur(12px);
}

.brand {
  font-weight: 800;
  letter-spacing: 0;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--muted);
  font-size: 14px;
}

main {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  min-height: 72vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 72px 0 56px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 820px;
  margin-bottom: 20px;
  font-size: clamp(44px, 9vw, 84px);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.lead {
  max-width: 720px;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 22px);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 8px;
  font-weight: 700;
}

.primary {
  background: var(--accent);
  color: #fff;
}

.primary:hover {
  background: var(--accent-dark);
}

.secondary {
  border: 1px solid var(--line);
  background: #fff;
}

.section {
  padding: 64px 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  max-width: 680px;
  margin-bottom: 24px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.card,
.panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  padding: 22px;
}

.card p,
.section p,
dd {
  color: var(--muted);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: 32px;
  align-items: start;
}

dl {
  margin: 0;
}

dl div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

dl div:last-child {
  border-bottom: 0;
}

dt {
  font-weight: 800;
}

dd {
  margin: 0;
  text-align: right;
}

pre {
  overflow-x: auto;
  margin: 0;
  padding: 22px;
  border-radius: 8px;
  background: #101828;
  color: #e5e7eb;
  font-size: 14px;
  line-height: 1.55;
}

.rules ul {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
}

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

@media (max-width: 760px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .grid,
  .split {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }
}