:root {
  --bg: #f7f8fa;
  --card: #ffffff;
  --text: #1c2430;
  --muted: #5a6472;
  --accent: #1a6ee0;
  --border: #e4e8ee;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151a;
    --card: #1b1f27;
    --text: #e8ecf2;
    --muted: #9aa4b2;
    --accent: #5aa0ff;
    --border: #2a3038;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 20px 80px;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
}
h1 {
  font-size: 1.9rem;
  margin: 0 0 4px;
  letter-spacing: -0.02em;
}
.sub {
  color: var(--muted);
  margin: 0 0 32px;
  font-size: 0.95rem;
}
h2 {
  font-size: 1.1rem;
  margin: 32px 0 8px;
  padding-top: 8px;
}
p { margin: 6px 0; }
a { color: var(--accent); }
address { font-style: normal; }
ul { margin: 6px 0; padding-left: 20px; }
li { margin: 4px 0; }
.todo {
  background: rgba(255, 196, 0, 0.14);
  border-left: 3px solid #f0a500;
  padding: 2px 8px;
  border-radius: 4px;
  color: inherit;
}
.nav {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 0.9rem;
}
.nav a { color: var(--muted); text-decoration: none; }
.nav a:hover { color: var(--accent); }
footer {
  margin-top: 24px;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}
/* Landing */
.hero { text-align: center; padding: 24px 0 8px; }
.hero .badge {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 12px;
  margin-bottom: 16px;
}
.hero h1 { font-size: 2.4rem; }
.lead { color: var(--muted); font-size: 1.1rem; margin: 8px 0 0; }
.project {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 24px;
  margin-top: 16px;
}
.project h3 { margin: 0 0 4px; font-size: 1.15rem; }
.project p { color: var(--muted); }