:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --text: #1c1f24;
  --muted: #5d6470;
  --border: #e4e1da;
  --accent: #2f6f5e;
  --accent-hover: #245748;
  --max: 44rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --surface: #1b1e23;
    --text: #e8e6e1;
    --muted: #a0a6b0;
    --border: #2c3038;
    --accent: #7cc4ad;
    --accent-hover: #9dd6c3;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

a { color: var(--accent); text-underline-offset: 0.18em; }
a:hover { color: var(--accent-hover); }

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.1rem;
  padding-bottom: 1.1rem;
}
.brand {
  font-weight: 650;
  letter-spacing: -0.01em;
  color: var(--text);
  text-decoration: none;
}
.site-header nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 1.25rem;
  font-size: 0.95rem;
}
.site-header nav a:hover { color: var(--text); }

/* Hero */
.hero {
  padding: 4.5rem 0 3rem;
}
.hero h1 {
  font-size: clamp(2rem, 6vw, 2.75rem);
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin: 0 0 1rem;
}
.hero p {
  font-size: 1.2rem;
  color: var(--muted);
  margin: 0;
  max-width: 34rem;
}

/* Sections */
section { padding: 2rem 0; }
h2 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  font-weight: 600;
  margin: 0 0 1rem;
}

.card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.4rem;
  color: inherit;
  text-decoration: none;
  transition: border-color 0.15s ease;
}
.card:hover { border-color: var(--accent); color: inherit; }
.card h3 {
  margin: 0 0 0.25rem;
  font-size: 1.2rem;
}
.card p { margin: 0; color: var(--muted); }
.card .link { color: var(--accent); font-size: 0.95rem; margin-top: 0.6rem; display: inline-block; }

/* Policy page */
.policy { padding: 3rem 0 2rem; }
.policy h1 { font-size: 2rem; letter-spacing: -0.02em; margin: 0 0 0.25rem; }
.policy .updated { color: var(--muted); margin-top: 0; }
.policy h2 {
  font-size: 1.15rem;
  text-transform: none;
  letter-spacing: 0;
  color: var(--text);
  margin: 2rem 0 0.5rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  color: var(--muted);
  font-size: 0.9rem;
}
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  padding-top: 1.5rem;
  padding-bottom: 2rem;
}
.site-footer a { color: var(--muted); }