:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --text: #1d1d1f;
  --muted: #5f5f66;
  --border: #e4e2dc;
  --accent: #2f6f5e;
  --accent-soft: #e5f0ec;
  --max: 46rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141416;
    --surface: #1c1c1f;
    --text: #ececef;
    --muted: #a3a3ab;
    --border: #2e2e33;
    --accent: #7cc4ad;
    --accent-soft: #1f2f2a;
  }
}

* { 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", system-ui, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
}

a { color: var(--accent); text-underline-offset: 0.15em; }

header, main, footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1rem;
}

header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  padding-top: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.site-name {
  font-weight: 650;
  color: var(--text);
  text-decoration: none;
}

nav { display: flex; flex-wrap: wrap; gap: 0.25rem 1.25rem; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover, nav a[aria-current="page"] { color: var(--text); }
nav a[aria-current="page"] { font-weight: 600; }

main { padding-top: 2.5rem; padding-bottom: 3rem; }

h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 0.5rem; letter-spacing: -0.01em; }
h2 { font-size: 1.3rem; margin: 2.5rem 0 0.5rem; }
h3 { font-size: 1.05rem; margin: 1.5rem 0 0.25rem; }

.lede { color: var(--muted); font-size: 1.15rem; margin-top: 0; }
.meta { color: var(--muted); font-size: 0.9rem; }

.pledges {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 0.75rem;
}

.pledges li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.9rem 1rem;
}

.pledges strong { display: block; }
.pledges span { color: var(--muted); font-size: 0.95rem; }

.callout {
  background: var(--accent-soft);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}

.callout p:first-child { margin-top: 0; }
.callout p:last-child { margin-bottom: 0; }

footer {
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
  padding-bottom: 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.breadcrumb { color: var(--muted); font-size: 0.9rem; margin: 0 0 1rem; }
.breadcrumb a { color: var(--muted); }

.app-list { list-style: none; padding: 0; margin: 1.5rem 0; }
.app-list li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
}
.app-list a { font-weight: 600; font-size: 1.1rem; }
.app-list p { margin: 0.25rem 0 0; color: var(--muted); }