:root {
  color-scheme: light;
  --background: #f5f2e9;
  --surface: #fffdf7;
  --brand: #176f69;
  --brand-dark: #123f56;
  --accent: #e9a82f;
  --text: #20302f;
  --muted: #64716e;
  --border: #d8ddd6;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  line-height: 1.75;
}

header {
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 94%, transparent);
}

.header-inner,
main,
footer {
  width: min(880px, calc(100% - 40px));
  margin: 0 auto;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 0;
}

.brand {
  color: var(--brand);
  font-size: 1.25rem;
  font-weight: 750;
  letter-spacing: .02em;
  text-decoration: none;
}

nav { display: flex; flex-wrap: wrap; gap: 16px; }
nav a, footer a { color: var(--brand-dark); }

main { padding: 64px 0 72px; }

.hero {
  padding: 38px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: 0 14px 34px rgb(25 70 65 / 7%);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--brand);
  font-size: .86rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}

h1, h2, h3 { line-height: 1.4; color: var(--brand-dark); }
h1 { margin: 0; font-size: clamp(2rem, 6vw, 3.4rem); }
h2 { margin-top: 2.4em; font-size: 1.45rem; }
h3 { margin-top: 1.8em; font-size: 1.08rem; }

.lead { max-width: 680px; margin: 18px 0 0; color: var(--muted); }
.updated { color: var(--muted); font-size: .92rem; }

.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--surface);
}

.card h2 { margin: 0 0 8px; }
.card p { margin: 0 0 18px; color: var(--muted); }
.button {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--brand);
  color: white;
  font-weight: 700;
  text-decoration: none;
}

.note {
  margin: 28px 0;
  padding: 18px 20px;
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  background: var(--surface);
}

li + li { margin-top: .55em; }
a { text-underline-offset: 3px; }

footer {
  padding: 28px 0 44px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: .9rem;
}

@media (max-width: 680px) {
  .header-inner { align-items: flex-start; flex-direction: column; }
  main { padding-top: 36px; }
  .hero { padding: 26px; border-radius: 18px; }
  .cards { grid-template-columns: 1fr; }
}