:root {
  color-scheme: light dark;
  --bg: #f7f5f0;
  --surface: #ffffff;
  --text: #1e2521;
  --muted: #5d665f;
  --accent: #1f6b4f;
  --accent-dark: #164d39;
  --border: #d9ded9;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111713;
    --surface: #18211b;
    --text: #eef3ee;
    --muted: #b6c0b8;
    --accent: #78c9a3;
    --accent-dark: #a2ddbf;
    --border: #33443a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
}

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

.site-header, main, footer {
  width: min(920px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 26px 0 18px;
  border-bottom: 1px solid var(--border);
}

.brand {
  color: var(--text);
  font-weight: 750;
  text-decoration: none;
  letter-spacing: -0.02em;
}

nav { display: flex; gap: 18px; flex-wrap: wrap; }
nav a { text-decoration: none; font-size: 0.95rem; }

main { padding: 54px 0 66px; }

.hero { max-width: 760px; }
.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 18px;
  font-size: clamp(2.4rem, 7vw, 4.5rem);
  line-height: 1.02;
  letter-spacing: -0.055em;
}

h2 { margin-top: 36px; line-height: 1.2; }

.lead { font-size: 1.2rem; color: var(--muted); max-width: 68ch; }
p, li { max-width: 76ch; }

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

.button {
  display: inline-block;
  border-radius: 999px;
  padding: 11px 18px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 650;
  text-decoration: none;
}

.button:hover { background: var(--accent-dark); color: #ffffff; }
.button.secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
  margin-top: 56px;
}

.grid article, .notice {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
}

.grid h2, .notice h2 { margin-top: 0; font-size: 1.15rem; }
.grid p, .notice p { color: var(--muted); }

.notice { margin-top: 22px; }
.document { max-width: 800px; }
.document h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
.document h2 { font-size: 1.25rem; }
.small { color: var(--muted); font-size: 0.9rem; }

footer {
  border-top: 1px solid var(--border);
  padding: 24px 0 44px;
  color: var(--muted);
  font-size: 0.9rem;
}