:root {
  --ink: #12151a;
  --muted: #5c6570;
  --line: #e4e7eb;
  --paper: #f7f8fa;
  --white: #fff;
  --accent: #1f4e79;
  --accent-hover: #163a5a;
  --max: 68rem;
  --pad: 1.25rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font: 16px/1.55 system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

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

a:hover {
  color: var(--accent-hover);
}

.skip {
  position: absolute;
  left: -999px;
  top: 0.5rem;
}

.skip:focus {
  left: 0.5rem;
  z-index: 2;
  background: var(--white);
  padding: 0.5rem 0.75rem;
}

.wrap {
  width: min(var(--max), 100% - 2 * var(--pad));
  margin-inline: auto;
}

header {
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4rem;
}

.mark {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: inherit;
  text-decoration: none;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.mark-sq {
  width: 1.5rem;
  height: 1.5rem;
  background: var(--accent);
  border-radius: 0.2rem;
}

nav ul {
  display: flex;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.95rem;
}

nav a[aria-current="page"] {
  font-weight: 600;
}

nav a:hover {
  color: var(--accent);
}

.hero {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 2.5rem;
  align-items: center;
  padding: 3.5rem 0 4rem;
}

.hero h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.85rem, 3vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  font-weight: 650;
}

.lede {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 36rem;
}

.hero img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 0.35rem;
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: var(--white);
  text-decoration: none;
  padding: 0.65rem 1.1rem;
  border-radius: 0.25rem;
  font-size: 0.95rem;
  font-weight: 550;
}

.btn:hover {
  background: var(--accent-hover);
  color: var(--white);
}

.band {
  background: var(--paper);
  border-block: 1px solid var(--line);
  padding: 3rem 0;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  padding: 1.25rem 1.35rem;
}

.card h2 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.page {
  padding: 2.75rem 0 4rem;
}

.page h1 {
  margin: 0 0 0.75rem;
  font-size: 2rem;
  letter-spacing: -0.03em;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
  margin-top: 1.5rem;
}

.split img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 0.35rem;
}

.split--wide img {
  aspect-ratio: 16 / 9;
}

.prose p {
  color: var(--muted);
  max-width: 40rem;
}

footer {
  border-top: 1px solid var(--line);
  padding: 1.25rem 0 1.75rem;
  color: var(--muted);
  font-size: 0.85rem;
}

@media (max-width: 800px) {
  .hero,
  .split,
  .cards {
    grid-template-columns: 1fr;
  }

  .bar {
    flex-wrap: wrap;
    padding-block: 0.75rem;
  }
}