:root {
  --bg: #0e0e0e;
  --surface: #161616;
  --border: #262626;
  --text: #e6e6e6;
  --muted: #9aa0a6;
  --accent: #76d6b1;
  --link: #76d6b1;
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
  font-size: 16px;
  line-height: 1.65;
}
.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 24px 96px;
}
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  font-size: 14px;
  color: var(--muted);
}
.topbar a { color: var(--link); text-decoration: none; }
.topbar a:hover { text-decoration: underline; }
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 2.4px;
}
.brand .dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}
h1 {
  font-size: 28px;
  margin: 0 0 8px 0;
  letter-spacing: -0.01em;
}
.effective { color: var(--muted); margin: 0 0 28px 0; font-size: 14px; }
h2 {
  font-size: 19px;
  margin: 32px 0 8px 0;
  letter-spacing: -0.005em;
}
h3 {
  font-size: 16px;
  margin: 22px 0 6px 0;
  color: var(--text);
}
p, ul, ol { margin: 8px 0 12px 0; }
ul, ol { padding-left: 22px; }
li { margin: 4px 0; }
a { color: var(--link); }
strong { color: var(--text); }
hr { border: none; border-top: 1px solid var(--border); margin: 32px 0; }
.callout {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
  margin: 16px 0;
  color: var(--muted);
  font-size: 14px;
}
.footer {
  margin-top: 48px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  justify-content: space-between;
}