:root {
  --bg: #fff;
  --fg: #2b2b2b;
  --muted: #5f6368;
  --line: #d9d9d9;
}
* { box-sizing: border-box; }
html { background: var(--bg); }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--fg);
  font: 18px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 48px 16px;
}
h1 { margin: 0 0 32px; line-height: 0; }
h1 img { width: min(420px, 80vw); height: auto; }
.tag { margin: 0; font-size: 22px; letter-spacing: .02em; }
.note { margin: 8px 0 32px; color: var(--muted); }
.mail {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0 24px;
  border: 1px solid var(--fg);
  border-radius: 999px;
  color: var(--fg);
  text-decoration: none;
}
.mail:hover, .mail:focus-visible { background: var(--fg); color: var(--bg); }
footer {
  padding: 24px 16px;
  border-top: 1px solid var(--line);
  text-align: center;
  font-size: 14px;
  color: var(--muted);
}
footer p { margin: 4px 0; text-wrap: balance; }