:root {
  color-scheme: light;
  --color-primary: rgb(2, 110, 0);
  --color-primary-container: rgb(119, 255, 97);
  --color-on-primary-container: rgb(0, 34, 0);
  --color-secondary: rgb(84, 99, 77);
  --color-secondary-container: rgb(215, 232, 205);
  --color-on-secondary-container: rgb(18, 31, 14);
  --color-background: rgb(252, 253, 246);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --color-primary: rgb(2, 230, 0);
    --color-primary-container: rgb(1, 83, 0);
    --color-on-primary-container: rgb(119, 255, 97);
    --color-secondary: rgb(187, 203, 178);
    --color-secondary-container: rgb(60, 75, 55);
    --color-on-secondary-container: rgb(215, 232, 205);
    --color-background: rgb(26, 28, 24);
  }
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
}

body {
  display: flex;
  flex-direction: column;
  background-color: var(--color-background);
}

.xkk_h1 {
  margin: 0;
  padding: 1.5rem 0;
  text-align: center;
  font-size: 2rem;
}

.xkk_p {
  margin: 0;
  padding: 0.5rem;
  font-size: 1rem;
}

.xkk_p a {
  color: var(--color-primary);
}

.xkk_header {
  margin: 0;
  padding: 0 1rem;
}

.xkk_header .xkk_h1 {
  padding-top: 0.5rem;
}

.xkk_header a {
  color: var(--color-secondary);
}

.xkk_main {
  flex: 1;
  margin: 0 auto;
  padding: 0 0.5rem;
  box-sizing: border-box; /* 关键：让 width 包含 padding */
  width: 100%;
  max-width: 64rem;
}

.xkk_main .xkk_p {
  border-radius: 0.5rem;
}

.xkk_main a {
  color: var(--color-primary);
}


.xkk_footer {
  margin-top: 2rem;
  font-size: 1rem;
  text-align: center;
  color: var(--color-on-secondary-container);
  background-color: var(--color-secondary-container);
}

.xkk_footer .xkk_p {
  margin: 0;
  padding: 0.25rem;
  border-radius: 0;
  font-size: 1rem;
  color: var(--color-secondary);
  background-color: var(--color-secondary-container);
}

.xkk_footer .xkk_p a {
  color: var(--color-secondary);
}

.text-center {
  text-align: center;
}