:root {
  --ink: #17211b;
  --muted: #6d766f;
  --line: #d8ded7;
  --paper: #f4f6f0;
  --panel: #fbfcf8;
  --green: #2c654d;
  --lime: #c8ef7a;
  --orange: #e9754f;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.6;
}
.shell {
  width: min(760px, calc(100% - 40px));
  margin: 0 auto;
  padding: 40px 0 70px;
}
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  padding-bottom: 20px;
  margin-bottom: 30px;
}
header a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.3rem;
}
header a span { color: var(--orange); }
nav a {
  margin-left: 18px;
  color: var(--green);
  text-decoration: none;
  font: 700 0.85rem Arial, sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
h1 {
  font-size: 2.2rem;
  margin-bottom: 10px;
  letter-spacing: -0.5px;
}
h2 {
  margin-top: 34px;
  font-size: 1.3rem;
  color: var(--green);
}
p, li { color: var(--ink); }
.muted { color: var(--muted); font-size: 0.9rem; }
.updated {
  display: inline-block;
  margin-top: 6px;
  color: var(--muted);
  font: 700 0.75rem Arial, sans-serif;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 24px 28px;
  margin-top: 24px;
}
footer {
  margin-top: 50px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
}
a { color: var(--green); }