:root {
  color-scheme: light;
  --green: #166534;
  --green-light: #dcfce7;
  --ink: #17212b;
  --muted: #64748b;
  --line: #dbe5dd;
  --paper: #ffffff;
  --background: #f4f8f5;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--background);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

header {
  background: var(--green);
  color: white;
}

.header-inner,
main,
footer {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: white;
  font-size: 1.1rem;
  font-weight: 800;
  text-decoration: none;
}

.brand img {
  display: block;
  width: 44px;
  height: 44px;
  border: 2px solid rgba(255, 255, 255, 0.88);
  border-radius: 12px;
  box-shadow: 0 5px 14px rgba(0, 0, 0, 0.18);
}

nav { display: flex; gap: 18px; }
nav a { color: #dcfce7; font-weight: 700; text-decoration: none; }
nav a:hover, nav a:focus-visible { color: white; text-decoration: underline; }

main {
  margin-top: 38px;
  margin-bottom: 38px;
  padding: clamp(24px, 5vw, 52px);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 16px 40px rgba(22, 101, 52, 0.08);
}

.eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  padding: 5px 11px;
  border-radius: 999px;
  background: var(--green-light);
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h1 { margin: 0 0 12px; font-size: clamp(2rem, 6vw, 3.35rem); line-height: 1.08; }
h2 { margin-top: 34px; color: var(--green); font-size: 1.25rem; }
p, li { color: #334155; }
.updated { color: var(--muted); font-size: 0.92rem; }

.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 30px;
}

.card {
  display: block;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  color: var(--ink);
  text-decoration: none;
}

.card:hover, .card:focus-visible { border-color: var(--green); background: #f7fff9; }
.card strong { display: block; color: var(--green); font-size: 1.08rem; margin-bottom: 5px; }
.card span { color: var(--muted); }

a { color: var(--green); }
footer { padding: 0 0 38px; color: var(--muted); text-align: center; font-size: 0.9rem; }

@media (max-width: 640px) {
  .header-inner { align-items: flex-start; flex-direction: column; padding: 18px 0; }
  nav { flex-wrap: wrap; gap: 10px 16px; }
  main { margin-top: 20px; border-radius: 18px; }
  .cards { grid-template-columns: 1fr; }
}