:root {
  --ink: #1a1a1a;
  --muted: #5c5c5c;
  --line: #e3e3e3;
  --accent: #0f5c4e;
  --bg: #ffffff;
  --soft: #f7f8f7;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

header {
  border-bottom: 1px solid var(--line);
  padding: 22px 0;
  margin-bottom: 48px;
}

header .wrap {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.logo {
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}

.logo span { color: var(--accent); }

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 20px;
  font-size: 15px;
}

nav a:hover, nav a.active { color: var(--accent); }

h1 {
  font-size: 34px;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}

h2 {
  font-size: 21px;
  margin: 40px 0 12px;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 17px;
  margin: 28px 0 8px;
}

p, li { color: #262626; }

.lead {
  font-size: 19px;
  color: var(--muted);
  margin-bottom: 36px;
}

a { color: var(--accent); }

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

table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 15.5px;
}

th, td {
  text-align: left;
  padding: 11px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  background: var(--soft);
  font-weight: 600;
}

.box {
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px 22px;
  margin: 28px 0;
}

.box p:first-child { margin-top: 0; }
.box p:last-child { margin-bottom: 0; }

.meta {
  font-size: 15px;
  color: var(--muted);
}

footer {
  border-top: 1px solid var(--line);
  margin-top: 72px;
  padding: 28px 0 56px;
  font-size: 14.5px;
  color: var(--muted);
}

footer a { color: var(--muted); }

@media (max-width: 560px) {
  h1 { font-size: 27px; }
  nav a { margin: 0 16px 0 0; }
  header .wrap { display: block; }
  nav { margin-top: 10px; }
}