:root {
  color-scheme: light dark;
  --bg: #fafaf9;
  --fg: #1c1c1c;
  --muted: #6b6b6b;
  --border: #e3e3e0;
  --accent: #3b6ef0;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16171a;
    --fg: #ececec;
    --muted: #9a9a9a;
    --border: #2c2d31;
    --accent: #6d93ff;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  line-height: 1.6;
}

.wrap {
  max-width: 640px;
  margin: 0 auto;
  padding: 3rem 1.25rem 4rem;
}

h1 {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

.lead {
  color: var(--muted);
  margin-top: 0;
  margin-bottom: 2rem;
  font-size: 0.95rem;
}

.link-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.link-list a {
  display: block;
  padding: 1rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--fg);
  text-decoration: none;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.link-list a:hover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.link-list .desc {
  display: block;
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 0.2rem;
}

.back {
  display: inline-block;
  margin-bottom: 1.5rem;
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
}

.back:hover { text-decoration: underline; }

footer {
  margin-top: 3rem;
  color: var(--muted);
  font-size: 0.8rem;
}