:root {
  color-scheme: light;
  --bg: #e9f8ff;
  --ink: #14313d;
  --panel: #ffffff;
  --line: #c8e6f1;
  --link: #0f6f96;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  font-family: "Pixelify Sans", "Trebuchet MS", sans-serif;
  background: linear-gradient(180deg, #f3fcff 0%, var(--bg) 100%);
  color: var(--ink);
}

.page {
  width: min(900px, 94vw);
  margin: 28px auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px 20px;
  box-shadow: 0 12px 28px rgba(10, 37, 51, 0.12);
}

h1 {
  margin: 0 0 10px;
  font-size: clamp(30px, 5vw, 48px);
  line-height: 1;
}

h2 {
  margin: 18px 0 8px;
  font-size: clamp(20px, 3.4vw, 30px);
}

p,
li {
  font-size: 18px;
  line-height: 1.45;
}

ul {
  margin: 8px 0;
  padding-left: 22px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 4px 0 18px;
}

.nav a,
a {
  color: var(--link);
  text-decoration-thickness: 2px;
  text-underline-offset: 2px;
}

.back {
  margin-top: 22px;
  font-size: 16px;
}

.small {
  font-size: 14px;
  opacity: 0.8;
}