:root {
  --color-bg: #fff;
  --color-text: #111;
  --color-muted: #4a4a4a;
  --color-border: #e2e2e2;
  --color-code-bg: #f6f6f6;
  --color-code-border: #e0e0e0;
  --color-code-text: #1a1a1a;
  --color-inline-code-bg: #f2f2f2;
  --content-width: 64ch;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #121212;
    --color-text: #f5f5f5;
    --color-muted: #b6b6b6;
    --color-border: #2c2c2c;
    --color-code-bg: #1a1a1a;
    --color-code-border: #2f2f2f;
    --color-code-text: #f5f5f5;
    --color-inline-code-bg: #202020;
  }
}

@font-face {
  font-family: "Merriweather-fallback";
  src: local("Georgia");
  size-adjust: 108.5%;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 100%;
  line-height: 1.6;
}

body {
  margin: 0 auto;
  max-width: 720px;
  font-family: "Merriweather", "Merriweather-fallback", Georgia, "Times New Roman", serif;
  font-size: 1rem;
  line-height: 1.6;
  letter-spacing: 0.01em;
  color: var(--color-text);
  background: var(--color-bg);
  padding: 0.75rem 1.25rem 2.5rem;
}

.skip-link {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.5rem 0.75rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  text-decoration: none;
  transform: translateY(-200%);
  transition: transform 0.2s ease;
  z-index: 1000;
}

.skip-link:focus-visible {
  transform: translateY(0);
}

h1,
h2,
h3 {
  margin-top: 2em;
  margin-bottom: 0.5em;
  line-height: 1.25;
  letter-spacing: 0.015em;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: underline;
}

a:focus {
  outline: none;
}

a:focus-visible {
  outline: 2px solid var(--color-border);
  outline-offset: 2px;
}

.page {
  margin: 0 auto;
  padding: 0 0 3rem;
}

.site-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.5rem;
  margin-bottom: 2.25rem;
}

.site-header,
main,
.site-footer {
  width: min(100%, var(--content-width));
  margin-left: auto;
  margin-right: auto;
}

.site-mark {
  display: block;
  width: min(520px, 92vw);
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.site-mark img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 35%;
}

.site-mark:focus-visible {
  outline: none;
}

.site-subtitle {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-muted);
  text-align: center;
}




.site-nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 0;
}

main {
  margin: 0 auto;
}

main h1:first-child {
  margin-top: 1rem;
}

.page-article {
  line-height: 1.7;
}

.page-article p {
  margin: 0.9rem 0;
}

.page-article pre,
.article-entry pre {
  margin: 1.4rem 0;
  max-width: 100%;
  overflow-x: auto;
  white-space: pre;
  background: var(--color-code-bg);
  color: var(--color-code-text);
  border: 1px solid var(--color-code-border);
  border-radius: 0.4rem;
  padding: 0.85rem 1rem;
}

.page-article pre code,
.article-entry pre code {
  background: none;
  border: 0;
  padding: 0;
}

.page-article :not(pre) > code,
.article-entry :not(pre) > code {
  background: var(--color-inline-code-bg);
  border: 1px solid var(--color-code-border);
  border-radius: 0.25rem;
  padding: 0.1rem 0.25rem;
}

.article-figure {
  margin: 1.75rem 0;
  padding: 0;
  width: 100%;
}

.article-figure img {
  display: block;
  width: 100%;
  height: auto;
}

.article-figure figcaption {
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-muted);
  font-style: italic;
  text-align: center;
}

.listing figcaption {
  margin-top: 0.4rem;
  font-size: 0.85rem;
  color: var(--color-muted);
  font-style: italic;
}

.summary-list,
.archive-years,
.tag-year-list,
.index-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.article-entry {
  margin-top: 5rem;
}

.summary-item + .summary-item,
.archive-years li + li,
.tag-year-list li + li,
.index-list li + li {
  margin-top: 1rem;
}

.summary {
  border-top: 1px solid var(--color-border);
  padding-top: 1rem;
}

.summary-header {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.summary-title {
  margin-top: 0.5em;
}

.summary-meta-line {
  margin: 0.75rem 0 0;
  color: var(--color-muted);
}

.site-footer {
  margin-top: 3rem;
  text-align: center;
  color: var(--color-muted);
}