:root {
  color-scheme: light;
  font-family:
    "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", system-ui,
    sans-serif;
  color: #222;
  background: #fff;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: #fff;
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  display: grid;
  grid-template-rows: 1fr auto;
  background: #fff;
}

.page-shell {
  width: min(calc(100% - 40px), 960px);
  margin: 0 auto;
  padding: 48px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

h1 {
  margin: 0;
  max-width: 920px;
  font-size: clamp(24px, 4vw, 40px);
  font-weight: 500;
  line-height: 1.7;
  letter-spacing: 0.01em;
  overflow-wrap: anywhere;
}

.site-footer {
  min-height: 56px;
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.site-footer a {
  color: #777;
  font-size: 12px;
  line-height: 1.5;
  text-decoration: none;
}

.site-footer a:hover {
  color: #222;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.site-footer a:focus-visible {
  outline: 3px solid rgb(0 0 0 / 18%);
  outline-offset: 4px;
}