/* =========================================================
   Tech Blog — Custom Theme
   Base color: #6495ED (Cornflower Blue)
   ========================================================= */

:root {
  --blue: #6495ED;
  --blue-dark: #4a7cd4;
  --blue-light: #8db3f5;
  --blue-dim: rgba(100, 149, 237, 0.15);
  --bg: #0d1117;
  --bg2: #161b22;
  --bg3: #21262d;
  --border: #30363d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --text-code: #79c0ff;
  --green: #3fb950;
  --orange: #f0883e;
  --red: #f85149;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --radius: 8px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

/* ── Reset ─────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: var(--blue);
  text-decoration: none;
  transition: color .2s;
}

a:hover {
  color: var(--blue-light);
}

/* ── Navigation ────────────────────────────────────── */
.site-nav {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  height: 56px;
}

.nav-logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1rem;
  color: var(--blue);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: .5rem;
  flex-shrink: 0;
}

.nav-logo .prompt {
  color: var(--green);
}

.nav-logo .cursor {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: var(--blue);
  animation: blink 1s step-end infinite;
  vertical-align: text-bottom;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: .25rem;
  list-style: none;
  margin-left: auto;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--text-muted);
  padding: .4rem .75rem;
  border-radius: var(--radius);
  transition: all .2s;
  display: flex;
  align-items: center;
  gap: .35rem;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--blue);
  background: var(--blue-dim);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  margin-left: auto;
  width: 34px;
  height: 34px;
  padding: 0;
  background: none;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
}

.nav-toggle:hover {
  background: var(--blue-dim);
}

.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-muted);
  border-radius: 2px;
  transition: transform .2s ease, opacity .2s ease, background .2s ease;
}

.nav-toggle:hover .nav-toggle-bar {
  background: var(--blue);
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Layout wrapper ────────────────────────────────── */
.site-main {
  flex: 1;
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  width: 100%;
}

/* ── Hero (home page) ──────────────────────────────── */
.hero {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: center;
  padding: 3rem 0 2.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.5rem;
}

.hero-terminal {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--text-muted);
  margin-bottom: .75rem;
}

.hero-terminal .prompt {
  color: var(--green);
}

.hero-terminal .cmd {
  color: var(--text);
}

.hero h1 {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--blue);
  line-height: 1.2;
  margin-bottom: .75rem;
}

.hero-desc {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 480px;
  margin-bottom: 1.25rem;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.hero-tag {
  font-family: var(--font-mono);
  font-size: .75rem;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--blue-light);
  padding: .25rem .65rem;
  border-radius: 999px;
}

.hero-title-row {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.hero-title-row h1 {
  flex: 1;
}

.hero-capybara {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .5rem;
}

.hero-capybara--sp {
  display: none;
}

.hero-capybara.hero-capybara--sp img {
  width: 90px;
}

.hero-capybara img {
  width: 160px;
  height: auto;
  filter: drop-shadow(0 4px 16px rgba(100, 149, 237, .35));
  transition: transform .3s ease;
}

.hero-capybara img:hover {
  transform: translateY(-4px) rotate(2deg);
}

/* ── Social badges ─────────────────────────────────── */
.hero-social {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: .75rem;
}

.hero-social a {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: .35rem;
  padding: .3rem .7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all .2s;
}

.hero-social a:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--blue-dim);
}

/* ── Section header ────────────────────────────────── */
.section-header {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin-bottom: 1.5rem;
}

.section-header h2 {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--text-muted);
}

.section-header h2 .cmd-prefix {
  color: var(--green);
}

.section-header h2 .cmd-text {
  color: var(--blue);
}

.section-header .divider {
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── Post card grid ────────────────────────────────── */
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.post-card {
  position: relative;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .2s, transform .2s, box-shadow .2s;
  display: flex;
  flex-direction: column;
}

.post-card:hover {
  border-color: var(--blue);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(100, 149, 237, .15);
}

.post-card-img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.post-card-body {
  padding: 1.2rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: .5rem;
  margin-bottom: .6rem;
}

.post-card-date {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--text-muted);
}

.post-card-cats {
  display: flex;
  flex-wrap: wrap;
  gap: .3rem;
}

.post-card-cat {
  font-family: var(--font-mono);
  font-size: .68rem;
  background: var(--blue-dim);
  color: var(--blue-light);
  padding: .15rem .5rem;
  border-radius: 4px;
  border: 1px solid rgba(100, 149, 237, .3);
}

.post-card-title {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: .5rem;
  flex: 1;
}

.post-card-title a {
  color: var(--text);
}

/* カード全体をクリック可能にする (stretched link) */
.post-card-title a::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
}

.post-card:hover .post-card-title a,
.post-card-title a:hover {
  color: var(--blue);
}

/* stretched link より前面に出して個別リンクを保つ */
.post-card-cat,
.read-more {
  position: relative;
  z-index: 1;
}

.post-card-desc {
  font-size: .85rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: .75rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: .75rem;
  border-top: 1px solid var(--border);
}

.read-more {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--blue);
  display: flex;
  align-items: center;
  gap: .3rem;
}

.read-more:hover {
  color: var(--blue-light);
}

.reading-time {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--text-muted);
}

/* ── View more link ────────────────────────────────── */
.view-more {
  text-align: center;
  margin: 1.5rem 0 2.5rem;
}

.view-more a {
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--blue);
  border: 1px solid var(--border);
  padding: .6rem 1.5rem;
  border-radius: var(--radius);
  transition: all .2s;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
}

.view-more a:hover {
  border-color: var(--blue);
  background: var(--blue-dim);
}

/* ── Single post ───────────────────────────────────── */
.post-article {
  margin: 0 auto;
}

.post-header {
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}

.post-breadcrumb {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.post-breadcrumb a {
  color: var(--text-muted);
}

.post-breadcrumb a:hover {
  color: var(--blue);
}

.post-breadcrumb .sep {
  margin: 0 .4rem;
}

.post-header h1 {
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: .75rem;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .75rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--text-muted);
}

.post-meta .meta-item {
  display: flex;
  align-items: center;
  gap: .3rem;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-top: .75rem;
}

.post-tag {
  font-family: var(--font-mono);
  font-size: .72rem;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: .2rem .6rem;
  border-radius: 4px;
}

.post-featured-img {
  max-width: 800px;
  width: 100%;
  border-radius: var(--radius);
  margin-bottom: 2rem;
  border: 1px solid var(--border);
}

/* ── Post content ──────────────────────────────────── */
.post-content {
  font-size: 1rem;
  line-height: 1.85;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4 {
  font-weight: 700;
  margin: 2rem 0 .75rem;
  line-height: 1.3;
  color: var(--text);
}

.post-content h1 {
  font-size: 1.6rem;
  padding-bottom: .4rem;
  border-bottom: 1px solid var(--border);
}

.post-content h1::before {
  content: "# ";
  color: var(--blue);
  font-family: var(--font-mono);
}

.post-content h2 {
  font-size: 1.3rem;
  padding-bottom: .4rem;
  border-bottom: 1px solid var(--border);
}

.post-content h2::before {
  content: "## ";
  color: var(--blue);
  font-family: var(--font-mono);
}

.post-content h3 {
  font-size: 1.1rem;
}

.post-content h3::before {
  content: "### ";
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: .85em;
}

.post-content p {
  margin-bottom: 1.25rem;
}

.post-content a {
  color: var(--blue);
  border-bottom: 1px solid rgba(100, 149, 237, .4);
}

.post-content a:hover {
  border-bottom-color: var(--blue-light);
}

.post-content ul, .post-content ol {
  margin: 0 0 1.25rem 1.5rem;
}

.post-content li {
  margin-bottom: .35rem;
}

.post-content blockquote {
  border-left: 3px solid var(--blue);
  padding: .75rem 1.25rem;
  margin: 1.5rem 0;
  background: var(--bg2);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-muted);
  font-style: italic;
}

.post-content code {
  font-family: var(--font-mono);
  font-size: .88em;
  background: var(--bg3);
  color: var(--text-code);
  padding: .15em .4em;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.post-content pre {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}

.post-content pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: .88rem;
  color: var(--text);
}

/* Prism line-numbers: <pre> に language-* クラスが付かない構造のため、
   行番号の絶対配置基準とコードの左余白をここで補う */
.post-content pre.line-numbers {
  position: relative;
  padding-left: 3.8em;
}

.post-content pre.line-numbers > code {
  position: relative;
}

.post-content pre.line-numbers .line-numbers-rows {
  top: 0;
  left: -3.8em;
  width: 3em;
  padding: 1.25rem 0;
  border-right: 1px solid var(--border);
}

.post-content img {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  display: block;
  margin: 1.5rem 0;
}

.post-content iframe {
  display: block;
  max-width: 700px;
  margin: 1.5rem 0;
}

.post-content iframe[src*="youtube.com"],
.post-content iframe[src*="docs.google.com/presentation"] {
  width: 100%;
  aspect-ratio: 16 / 9;
  height: auto;
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: .9rem;
}

.post-content th, .post-content td {
  border: 1px solid var(--border);
  padding: .6rem 1rem;
  text-align: left;
}

.post-content th {
  background: var(--bg3);
  font-family: var(--font-mono);
  color: var(--blue-light);
}

.post-content tr:nth-child(even) {
  background: var(--bg2);
}

.post-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* ── Post footer ───────────────────────────────────── */
.post-footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1.5rem 0;
}

.post-nav a {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .85rem 1rem;
  display: flex;
  flex-direction: column;
  gap: .3rem;
  transition: all .2s;
}

.post-nav a:hover {
  border-color: var(--blue);
  background: var(--blue-dim);
}

.post-nav .nav-label {
  font-family: var(--font-mono);
  font-size: .7rem;
  color: var(--text-muted);
}

.post-nav .nav-title {
  font-size: .9rem;
  color: var(--text);
  line-height: 1.4;
}

.post-nav .nav-prev {
  text-align: left;
}

.post-nav .nav-next {
  text-align: right;
}

.fix-link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: .4rem .85rem;
  border-radius: var(--radius);
  margin-top: 1rem;
  transition: all .2s;
}

.fix-link:hover {
  color: var(--blue);
  border-color: var(--blue);
}

/* ── List page ─────────────────────────────────────── */
.list-header {
  padding: 2rem 0 1.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}

.list-header h1 {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--blue);
  display: flex;
  align-items: center;
  gap: .5rem;
}

.list-header h1 .prompt {
  color: var(--green);
}

.list-count {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--text-muted);
  margin-top: .5rem;
}

/* ── Taxonomy (categories/tags) ────────────────────── */
.taxonomy-grid {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  padding: 1rem 0;
}

.taxonomy-item a {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-mono);
  font-size: .85rem;
  background: var(--bg2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: .5rem 1rem;
  border-radius: var(--radius);
  transition: all .2s;
}

.taxonomy-item a:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--blue-dim);
}

.taxonomy-count {
  font-size: .7rem;
  background: var(--bg3);
  color: var(--text-muted);
  padding: .1rem .4rem;
  border-radius: 4px;
}

/* ── Pagination ────────────────────────────────────── */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: .5rem;
  margin: 2rem 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: .85rem;
}

.pagination .page-link {
  display: inline-flex;
  align-items: center;
  padding: .4rem .85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  text-decoration: none;
  transition: all .2s;
}

.pagination .page-link:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.pagination .active .page-link {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--blue-dim);
}

.pagination .disabled .page-link {
  opacity: .4;
  pointer-events: none;
}

/* ── About page ────────────────────────────────────── */
.about-profile {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 2rem;
  margin-bottom: 2.5rem;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.about-profile-img {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: 50%;
  border: 2px solid var(--border);
  flex-shrink: 0;
  filter: drop-shadow(0 4px 16px rgba(100, 149, 237, .3));
  transition: transform .3s ease, filter .3s ease;
}

.about-profile-img:hover {
  transform: translateY(-4px);
  filter: drop-shadow(0 8px 24px rgba(100, 149, 237, .5));
}

.about-profile-body {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  min-width: 0;
}

.about-profile-handle {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--blue);
}

.about-profile-bio {
  font-size: .875rem;
  color: var(--text-muted);
}

.about-social {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-top: .25rem;
}

.about-social a {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: .4rem;
  padding: .3rem .65rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all .2s;
}

.about-social a i {
  width: 1em;
  text-align: center;
  flex-shrink: 0;
}

.about-social a:hover {
  color: var(--blue);
  border-color: var(--blue);
  background: var(--blue-dim);
}

@media (max-width: 600px) {
  .about-profile {
    flex-direction: column;
    text-align: center;
    gap: 1.25rem;
  }

  .about-social {
    justify-content: center;
  }
}

/* ── Stats page ────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.stat-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  text-align: center;
}

.stat-card .stat-value {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--blue);
}

.stat-card .stat-label {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--text-muted);
  margin-top: .25rem;
}

.stats-table-wrap {
  overflow-x: auto;
  margin-bottom: 2.5rem;
}

.stats-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: .85rem;
}

.stats-table th, .stats-table td {
  padding: .6rem 1rem;
  border-bottom: 1px solid var(--border);
}

.stats-table th {
  text-align: left;
  color: var(--blue-light);
}

.stats-table td {
  color: var(--text);
}

.stats-table th.align-right, .stats-table td.align-right {
  text-align: right;
}

.stats-table a {
  color: var(--blue);
}

.stats-bar {
  background: var(--bg3);
  border-radius: 4px;
  height: 8px;
  width: 200px;
}

.stats-bar-fill {
  background: var(--blue);
  border-radius: 4px;
  height: 8px;
}

.ranking-list {
  display: flex;
  flex-direction: column;
  gap: .5rem;
  margin-bottom: 2rem;
}

.ranking-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .75rem 1rem;
  transition: border-color .2s;
  text-decoration: none;
}

.ranking-item:hover, .ranking-item:focus-visible {
  border-color: var(--blue);
}

.ranking-rank {
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--blue);
  min-width: 2rem;
}

.ranking-chars {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--text-muted);
  min-width: 6rem;
}

.ranking-title {
  flex: 1;
  color: var(--text);
  font-size: .9rem;
}

.ranking-date {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--text-muted);
}

/* ── Footer ────────────────────────────────────────── */
.site-footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 1.5rem;
  text-align: center;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .75rem;
}

.footer-logo {
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--blue);
}

.footer-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--text-muted);
  transition: color .2s;
}

.footer-links a:hover {
  color: var(--blue);
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--text-muted);
}

.footer-copy .heart {
  color: var(--blue);
}

/* prism.js overrides */
code[class*="language-"], pre[class*="language-"] {
  background: transparent !important;
  font-family: var(--font-mono) !important;
}

/* ── 404 ────────────────────────────────────────────── */
.not-found {
  text-align: center;
  padding: 4rem 1rem;
}

.not-found .code-404 {
  font-family: var(--font-mono);
  font-size: 6rem;
  font-weight: 700;
  color: var(--blue);
  opacity: .3;
  line-height: 1;
}

.not-found h1 {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--text);
  margin: .5rem 0 1rem;
}

.not-found p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-family: var(--font-mono);
  font-size: .85rem;
  background: var(--blue);
  color: #fff;
  padding: .6rem 1.25rem;
  border-radius: var(--radius);
  transition: background .2s;
}

.btn:hover {
  background: var(--blue-dark);
  color: #fff;
}

/* ── Responsive ─────────────────────────────────────── */
@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero-capybara--pc {
    display: none;
  }

  .hero-capybara--sp {
    display: flex;
  }

  .hero h1 {
    font-size: 1.6rem;
  }

  .post-nav {
    grid-template-columns: 1fr;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-left: 0;
    padding: .5rem 1.5rem 1rem;
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    padding: .65rem .5rem;
  }

  .hero-social {
    gap: .5rem;
  }

  .hero-social a {
    font-size: .7rem;
    padding: .25rem .55rem;
  }
}

@media (max-width: 500px) {
  .hero-social a .social-label {
    display: none;
  }

  .hero-social a {
    padding: .4rem .55rem;
  }

  .post-grid {
    grid-template-columns: 1fr;
  }

  .hero-capybara.hero-capybara--sp img {
    width: 70px;
  }
}