:root {
  --ink: #1c1917;
  --muted: #57534e;
  --paper: #f4efe6;
  --card: #fffdf8;
  --line: #d6d0c4;
  --mark: #9a3412;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font: 16px/1.45 "IBM Plex Sans", "Noto Sans", "Liberation Sans", sans-serif;
  color: var(--ink);
  background: var(--paper);
  max-width: 52rem;
  margin: 0 auto;
  padding: 28px 20px 48px;
}

header { border-bottom: 3px solid var(--ink); padding-bottom: 16px; margin-bottom: 24px; }
.org { margin: 0 0 8px; color: var(--muted); font-size: 13px; }
h1 { font-size: 1.7rem; font-weight: 650; line-height: 1.2; margin: 0 0 10px; }
h1 span { color: var(--mark); }
.lead { margin: 0; max-width: 40rem; }
h2 { font-size: 1.05rem; margin: 0 0 10px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 16px 18px;
  margin: 0 0 14px;
}
ol, ul { margin: 0 0 12px; padding-left: 1.2rem; }
li { margin: 0 0 6px; }
code {
  font-family: "IBM Plex Mono", "Noto Sans Mono", ui-monospace, monospace;
  font-size: 0.92em;
  background: #efe8dc;
  padding: 0 4px;
}
.btn {
  display: inline-block;
  background: var(--ink);
  color: #faf6ef;
  text-decoration: none;
  padding: 10px 14px;
  font-weight: 600;
}
.btn:hover { background: var(--mark); }
.note { color: var(--muted); font-size: 13px; margin: 8px 0 0; }

aside {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}
aside img { image-rendering: pixelated; background: #fff; border: 1px solid var(--line); }
footer { margin-top: 28px; color: var(--muted); font-size: 13px; }

@media print {
  body { background: #fff; max-width: none; padding: 12mm; }
  .btn { border: 1px solid #000; color: #000; background: #fff; }
}