@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Noto+Sans+JP:wght@400;700&display=swap');

:root {
  --font-serif: ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
  --font-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --text-color: oklch(0.145 0 0);
  --dimmed-text-color: #777;
  --background-color: #fff;
  --link-color: #0066cc;
  --link-hover-color: #0056b3;
  --border-color: #aaa;
  --code-inline-bg: #f1f3f5;
  --code-inline-text: #1f2328;
  --hljs-bg: #f6f8fa;
  --hljs-text: #24292f;
  --hljs-comment: #6e7781;
  --hljs-keyword: #cf222e;
  --hljs-string: #0a3069;
  --hljs-number: #0550ae;
  --hljs-title: #8250df;
  --hljs-built_in: #953800;
  --max-width: 44rem;
}

[data-theme="dark"] {
  --text-color: #ddd;
  --dimmed-text-color: #aaa;
  --background-color: #0e0e11;
  --link-color: #65a0ff;
  --link-hover-color: #8ab4ff;
  --border-color: #454545;
  --code-inline-bg: #3a3f4b;
  --code-inline-text: #abb2bf;
  --hljs-bg: #282c34;
  --hljs-text: #abb2bf;
  --hljs-comment: #5c6370;
  --hljs-keyword: #c678dd;
  --hljs-string: #98c379;
  --hljs-number: #d19a66;
  --hljs-title: #61afef;
  --hljs-built_in: #56b6c2;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 18px;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  font-family: var(--font-serif);
  color: var(--text-color);
  background-color: var(--background-color);
  line-height: 1.5;
}

p {
  margin-bottom: 1.5rem;
  hyphens: auto;
  -webkit-hyphens: auto;
  -ms-hyphens: auto;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-sans);
  font-weight: 800;
  hyphens: auto;
  -webkit-hyphens: auto;
  -ms-hyphens: auto;
}

h1 {
  font-size: 1.875rem;
  line-height: 2.25rem;
}

h2 {
  font-size: 1.5rem;
  line-height: 2rem;
}

h3 {
  font-size: 1.25rem;
  line-height: 1.75rem;
}

h4 {
  font-size: 1.125rem;
  line-height: 1.75rem;
}

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

a:hover {
  color: var(--link-color);
}

pre {
  background: var(--hljs-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

pre code {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  line-height: 1.5;
  background: transparent;
  border: none;
  padding: 0;
  white-space: pre;
}

code {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  background: var(--code-inline-bg);
  color: var(--code-inline-text);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  border: 1px solid var(--border-color);
}

pre code.hljs {
  background: transparent;
  padding: 0;
  border: none;
}

.hljs {
  color: var(--hljs-text);
}

.hljs-comment,
.hljs-quote {
  color: var(--hljs-comment);
  font-style: italic;
}

.hljs-keyword,
.hljs-selector-tag,
.hljs-subst,
.hljs-type {
  color: var(--hljs-keyword);
}

.hljs-string,
.hljs-name {
  color: var(--hljs-string);
}

.hljs-title,
.hljs-title.class_,
.hljs-title.function_ {
  color: var(--hljs-title);
}

.hljs-number,
.hljs-literal,
.hljs-attr,
.hljs-variable {
  color: var(--hljs-number);
}

.hljs-built_in,
.hljs-symbol,
.hljs-bullet {
  color: var(--hljs-built_in);
}

.site-header,
.site-footer,
.site-main {
  width: min(92vw, var(--max-width));
  margin: 0 auto;
}

.site-header {
  padding: 2.5rem 0 1.5rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  gap: 1rem;
}

.site-title {
  font-family: var(--font-sans);
  font-size: 1.2rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-color);
  text-decoration: none;
}

.site-nav a {
  margin-left: 1rem;
  color: var(--dimmed-text-color);
  text-decoration: none;
  font-size: 0.95rem;
}

.site-nav a:hover {
  color: var(--link-color);
}

.theme-toggle {
  margin-left: auto;
  padding: 0.25rem 0.7rem;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  background: transparent;
  color: var(--text-color);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  cursor: pointer;
}

.theme-toggle:hover {
  color: var(--link-color);
  border-color: var(--link-color);
}

.site-main {
  padding: 2rem 0 3rem;
}

.hero-mark {
  display: flex;
  justify-content: center;
  margin: 0 auto 2rem;
}

.hero-mark img {
  width: min(70vw, 360px);
  height: auto;
}

.hero {
  margin-bottom: 2.5rem;
}

.hero h1 {
  font-size: clamp(2.4rem, 3vw, 3.2rem);
  margin-bottom: 0.5rem;
}

.lead {
  color: var(--dimmed-text-color);
  font-size: 1.1rem;
}

.posts h2 {
  font-size: 1.2rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 0.8rem;
}

.post-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.8rem;
}

.post-list li {
  display: flex;
  gap: 1rem;
  align-items: baseline;
  /* border-bottom: 1px solid var(--border-color); */
  padding-bottom: 0.6rem;
}

.post-list a {
  color: var(--text-color);
  text-decoration: none;
  font-size: 1.05rem;
}

.post-list a:hover {
  color: var(--link-color);
}

.post-list time {
  color: var(--dimmed-text-color);
  font-size: 0.9rem;
  white-space: nowrap;
}

.post h1 {
  font-size: clamp(2rem, 3vw, 2.6rem);
  margin-bottom: 0.4rem;
}

.post-meta {
  color: var(--dimmed-text-color);
  margin-top: 0;
  margin-bottom: 1.8rem;
}

.site-footer {
  padding: 1.5rem 0 3rem;
  border-top: 1px solid var(--border-color);
  color: var(--dimmed-text-color);
  font-size: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.site-footer-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.9rem;
}

@media (max-width: 640px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
  }

  .site-nav a {
    margin-left: 0;
    margin-right: 1rem;
  }

  .theme-toggle {
    margin-left: 0;
  }

  .post-list li {
    flex-direction: column;
    gap: 0.3rem;
    align-items: flex-start;
  }
}