:root {
  color-scheme: light;
  --bg: #f7f8f7;
  --text: #24302f;
  --muted: #5c6a68;
  --line: #d7ddda;
  --accent: #0b7a75;
  --surface: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.55;
}

main {
  max-width: 880px;
  margin: 0 auto;
  padding: 48px 20px 64px;
}

header {
  border-bottom: 1px solid var(--line);
  margin-bottom: 28px;
  padding-bottom: 20px;
}

h1 {
  margin: 0 0 8px;
  font-size: 2rem;
  line-height: 1.2;
}

h2 {
  margin-top: 28px;
  font-size: 1.25rem;
}

p,
li {
  color: var(--muted);
}

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

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin: 24px 0;
}

nav a {
  font-weight: 700;
  text-decoration: none;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}

.meta {
  color: var(--muted);
  font-size: 0.95rem;
}

footer {
  border-top: 1px solid var(--line);
  margin-top: 36px;
  padding-top: 18px;
}