:root {
  --ink: #16241d;
  --muted: #5b6f66;
  --leaf: #2f6b4f;
  --line: #e2e9e4;
  --paper: #fbfcfb;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 20px;
  background: var(--paper);
  color: var(--ink);
  font: 400 17px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 680px; margin: 0 auto; padding: 56px 0 72px; }

header { display: flex; align-items: center; gap: 12px; margin-bottom: 48px; }
header img { width: 36px; height: 36px; border-radius: 9px; }
header b { font-size: 17px; letter-spacing: -0.01em; }

h1 { font-size: 34px; line-height: 1.2; letter-spacing: -0.02em; margin: 0 0 14px; }
h2 { font-size: 19px; letter-spacing: -0.01em; margin: 40px 0 10px; }
p { margin: 0 0 16px; }
.lead { font-size: 19px; color: var(--muted); margin-bottom: 36px; }
.stamp { font-size: 14px; color: var(--muted); margin: 0 0 36px; }

ul { margin: 0 0 16px; padding-left: 22px; }
li { margin-bottom: 8px; }

a { color: var(--leaf); text-decoration-thickness: 1px; text-underline-offset: 3px; }

.card {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px 24px;
  background: #fff;
  margin-bottom: 16px;
}
.card h2 { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }

.mail {
  display: inline-block;
  font-size: 19px;
  font-weight: 600;
  margin: 2px 0 6px;
}

footer {
  margin-top: 56px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-size: 15px;
  color: var(--muted);
}
footer a { margin-right: 18px; }

@media (max-width: 480px) {
  h1 { font-size: 28px; }
  .wrap { padding: 36px 0 52px; }
}