:root {
  color-scheme: light;
  --ink: #10251d;
  --muted: #52665e;
  --paper: #f4f5ee;
  --panel: #ffffff;
  --acid: #c8ff53;
  --green: #174c38;
  --line: #d8ded8;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a { color: #126344; }
a:hover { color: #0c422f; }

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

header {
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  background: rgba(244, 245, 238, 0.94);
}

nav { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.brand { margin-right: auto; color: var(--ink); font-size: 20px; font-weight: 850; text-decoration: none; }
nav a:not(.brand) { font-weight: 650; text-decoration: none; }

main { padding: 64px 0 88px; }
.hero { padding: 52px; border-radius: 28px; background: var(--green); color: white; }
.eyebrow { margin: 0 0 8px; color: var(--acid); font-size: 13px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
h1 { margin: 0 0 16px; font-size: clamp(40px, 8vw, 72px); line-height: 1; letter-spacing: -.04em; }
h2 { margin: 44px 0 12px; font-size: 26px; line-height: 1.2; }
h3 { margin: 28px 0 8px; font-size: 19px; }
p, li { max-width: 74ch; }
.hero p { margin: 0; max-width: 56ch; color: rgba(255,255,255,.78); font-size: 19px; }
.updated { color: var(--muted); font-size: 14px; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 18px; }
.card { padding: 24px; border: 1px solid var(--line); border-radius: 20px; background: var(--panel); }
.card h2, .card h3 { margin-top: 0; }
.button { display: inline-block; margin-top: 14px; padding: 12px 17px; border-radius: 12px; background: var(--acid); color: var(--ink); font-weight: 800; text-decoration: none; }
.notice { padding: 18px 20px; border-left: 5px solid var(--acid); border-radius: 10px; background: #e9f3df; }

footer { padding: 28px 0 42px; border-top: 1px solid var(--line); color: var(--muted); }

@media (max-width: 720px) {
  main { padding-top: 34px; }
  .hero { padding: 32px 24px; }
  .grid { grid-template-columns: 1fr; }
}