:root {
  color-scheme: light;
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  color: #263648;
  background: #ffffff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
  width: min(100%, 960px);
  margin: 0 auto;
  padding: clamp(80px, 20vh, 200px) 24px 64px;
  text-align: center;
}

h1 {
  margin: 0 0 24px;
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 600;
  line-height: 1.5;
}

p {
  max-width: 32em;
  margin: 0 auto;
  color: #5c6673;
  font-size: 16px;
  line-height: 1.9;
  text-wrap: pretty;
}

footer {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  column-gap: 28px;
  row-gap: 4px;
  padding: 20px 16px;
  border-top: 1px solid #edf0f3;
  font-size: 13px;
  line-height: 1.6;
}

footer a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 44px;
  color: #586371;
  text-decoration: none;
}

footer a:hover { color: #235ba6; text-decoration: underline; }
footer a:focus-visible { outline: 2px solid #235ba6; outline-offset: 4px; }
footer img { flex: none; object-fit: contain; }

@media (max-width: 600px) {
  footer { flex-direction: column; align-items: center; }
}