:root {
  --bg-start: #f8ffec;
  --bg-end: #dff7f3;
  --card-bg: #ffffff;
  --text: #222831;
  --link: #0b6e4f;
  --link-hover: #084c3b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--text);
  background: linear-gradient(135deg, var(--bg-start), var(--bg-end));
}

.card {
  width: min(90%, 640px);
  padding: 2rem;
  border-radius: 14px;
  background: var(--card-bg);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
  line-height: 1.6;
}

h1 {
  margin-top: 0;
  font-size: 2rem;
}

a {
  color: var(--link);
  font-weight: 700;
  text-decoration: none;
}

a:hover,
a:focus {
  color: var(--link-hover);
  text-decoration: underline;
}