:root {
  color-scheme: light;
  --background: #ffffff;
  --text: #111111;
  --muted: #555555;
  --line: #d8d8d8;
  --soft: #f5f5f5;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 32px;
  border-bottom: 1px solid var(--line);
}

.site-title {
  font-weight: 700;
  text-decoration: none;
}

nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

nav a {
  color: var(--muted);
  text-decoration: none;
}

nav a:hover {
  color: var(--text);
  text-decoration: underline;
}

.page {
  width: min(860px, calc(100% - 40px));
  margin: 0 auto;
  padding: 48px 0 72px;
}

h1,
h2,
h3 {
  line-height: 1.2;
}

h1 {
  margin: 0 0 24px;
  font-size: 2rem;
}

h2 {
  margin: 36px 0 12px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
  font-size: 1.35rem;
}

h3 {
  margin: 28px 0 8px;
  font-size: 1.05rem;
}

p,
ul,
ol,
table,
pre {
  margin: 0 0 18px;
}

ul,
ol {
  padding-left: 24px;
}

code {
  padding: 2px 4px;
  background: var(--soft);
  border: 1px solid var(--line);
  font-family: Consolas, Monaco, monospace;
  font-size: 0.92em;
}

pre {
  overflow-x: auto;
  padding: 14px;
  background: var(--soft);
  border: 1px solid var(--line);
}

pre code {
  padding: 0;
  background: transparent;
  border: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
}

.page img {
  display: block;
  width: 75%;
  max-width: 100%;
  height: auto;
  margin: 20px auto;
}

th,
td {
  padding: 8px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--soft);
}

.breadcrumb {
  margin-bottom: 28px;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer {
  padding: 20px 32px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 620px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 20px;
  }

  .page {
    width: min(100% - 32px, 860px);
    padding-top: 36px;
  }

  .page img {
    width: 100%;
  }
}