:root {
  color-scheme: light dark;
  --background: #f3eee7;
  --paper: #faf8f4;
  --ink: #243b34;
  --muted: #5e665e;
  --line: #cfcfc3;
  --button: #294c40;
  --button-text: #faf8f4;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--background);
  -webkit-font-smoothing: antialiased;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}
a {
  color: inherit;
  text-decoration: none;
}
a:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 6px;
}
a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}
.site-header,
footer {
  padding: 28px clamp(24px, 5vw, 80px);
}
.brand {
  font-size: 22px;
  font-weight: 750;
  letter-spacing: -0.04em;
}
.brand span {
  margin-left: 10px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.12em;
}
main {
  flex: 1;
  display: grid;
  place-items: center;
  padding: 36px 24px 56px;
}
.cover {
  width: min(100%, 720px);
  padding: clamp(32px, 6vw, 72px) 24px;
  text-align: center;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 6px;
}
.mark {
  display: block;
  margin: 0 auto 24px;
  border-radius: 16px;
}
.eyebrow {
  font-size: 14px;
  letter-spacing: 0.15em;
  margin: 0 0 20px;
}
h1 {
  font-size: clamp(28px, 5vw, 48px);
  letter-spacing: -0.04em;
  line-height: 1.3;
  margin: 0 0 24px;
  font-weight: 650;
}
.intro {
  font-size: clamp(15px, 2.4vw, 18px);
  line-height: 1.9;
  color: var(--muted);
  margin: 0;
}
.enter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  min-height: 52px;
  margin-top: 34px;
  padding: 14px 28px;
  background: var(--button);
  color: var(--button-text);
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
}
.enter:hover {
  text-decoration: none;
  opacity: 0.9;
}
.notice {
  max-width: 32em;
  margin: 26px auto 0;
  font-size: 12px;
  line-height: 1.8;
  color: var(--muted);
}
footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px 32px;
  font-size: 12px;
  line-height: 1.8;
  color: var(--muted);
}
footer p {
  margin: 0;
}
nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
}
nav a {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --background: #1b2420;
    --paper: #222f28;
    --ink: #eceee5;
    --muted: #bec7bc;
    --line: #455449;
    --button: #c7dbc9;
    --button-text: #20372c;
  }
}
@media (max-width: 480px) {
  .site-header {
    padding-top: 24px;
  }
  main {
    padding: 16px 20px 32px;
  }
  .cover {
    padding: 36px 18px;
  }
  footer {
    padding: 20px 24px;
  }
}