:root {
  --bg: #f5f5f3;
  --surface: #ffffff;
  --text: #111111;
  --muted: #525252;
  --line: #d0d0d0;
  --line-strong: #1f1f1f;
  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --radius: 0.25rem;
  --font-body: "IBM Plex Sans", "Segoe UI", sans-serif;
  --font-head: "Newsreader", Georgia, serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background:
    radial-gradient(circle at 12% 10%, #ffffff 0%, transparent 35%),
    radial-gradient(circle at 100% 0%, #ececea 0%, transparent 30%),
    var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
}

h1,
h2,
h3 {
  font-family: var(--font-head);
  line-height: 1.15;
  margin: 0;
}

h1 {
  font-size: clamp(1.85rem, 4vw, 3rem);
  letter-spacing: 0.01em;
}

h2 {
  border-bottom: 2px solid var(--line-strong);
  font-size: clamp(1.25rem, 2.1vw, 1.75rem);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-2);
}

p {
  margin: 0;
}

ul {
  margin: 0;
  padding-left: 1.1rem;
}

a {
  color: inherit;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.15em;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid #000;
  outline-offset: 2px;
}

.skip-link {
  background: #fff;
  border: 2px solid #000;
  color: #000;
  left: var(--space-3);
  padding: var(--space-2) var(--space-3);
  position: absolute;
  top: -200px;
  z-index: 100;
}

.skip-link:focus {
  top: var(--space-3);
}