/* ============================================================================
   grep — a terminal-flavoured editorial theme for Ghost
   ----------------------------------------------------------------------------
   Design tokens are lifted straight from the "V4 remix" prototype:
   GitHub-Dark canvas + syntax accents, warm-paper light counterpart,
   Inter / Source Serif 4 / JetBrains Mono type system.
   ========================================================================== */

/* ---- Tokens: dark (default) ---------------------------------------------- */
:root {
  --bg: #0d1117;
  --bg2: #161b22;
  --bg3: #21262d;
  --border: #30363d;
  --border-soft: #21262d;
  --fg: #e6edf3;
  --fg-soft: #c9d1d9;
  --fg-muted: #8b949e;
  --fg-faint: #6e7681;
  --accent: #58a6ff;
  --accent-soft: #1f6feb33;
  --blue: #58a6ff;
  --green: #3fb950;
  --yellow: #d29922;
  --purple: #bc8cff;
  --red: #ff7b72;
  --orange: #ffa657;
  --tag-bg: #21262d;

  /* syntax (GitHub Dark) */
  --syn-keyword: #ff7b72;
  --syn-string: #a5d6ff;
  --syn-comment: #8b949e;
  --syn-fn: #d2a8ff;
  --syn-type: #ffa657;
  --syn-num: #79c0ff;

  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --serif: "Source Serif 4", "Source Serif Pro", Charter, Georgia, serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --headline: var(--serif);
  --content-width: 768px;
  --layout-width: 1200px;
  --shell-h: 100px;
}

/* ---- Tokens: light ------------------------------------------------------- */
[data-theme="light"] {
  --bg: #fdfcf8;
  --bg2: #f6f4ec;
  --bg3: #ebe7d8;
  --border: #d8d3c1;
  --border-soft: #e8e4d3;
  --fg: #1b1a17;
  --fg-soft: #3a3833;
  --fg-muted: #6e6a5e;
  --fg-faint: #9a9485;
  --accent: #0969da;
  --accent-soft: #dbeafe;
  --blue: #0969da;
  --green: #1a7f37;
  --yellow: #9a6700;
  --purple: #8250df;
  --red: #cf222e;
  --orange: #bc4c00;
  --tag-bg: #efeadb;

  /* syntax stays on a dark inlay even in light mode — code blocks keep their
     IDE chrome, matching the prototype. */
}

/* Headline font toggle (Ghost custom setting: headline_font) */
[data-headline="Mono"] { --headline: var(--mono); }

/* ---- Reset / base -------------------------------------------------------- */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.6;
  min-height: 100vh;
  transition: background .2s ease, color .2s ease;
}
img { max-width: 100%; height: auto; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent); text-decoration: underline; }
::selection { background: color-mix(in srgb, var(--accent) 28%, transparent); }
.site-main { display: block; }

/* ============================================================================
   Terminal shell (header)
   ========================================================================== */
.shell {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg2) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  color: var(--fg-muted);
}
.shell-nav {
  display: flex;
  align-items: center;
  padding: 12px 18px;
  gap: 0;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--fg);
  font-family: var(--mono);
  font-weight: 600;
  font-size: 14px;
}
.brand:hover { text-decoration: none; }
.brand .prompt { color: var(--green); }
.brand .ext { color: var(--fg-faint); }

.term-nav {
  display: flex;
  gap: 22px;
  margin-left: 36px;
  font-size: 13px;
  align-items: center;
}
.term-nav a {
  color: var(--fg-muted);
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
}
.term-nav a:hover { color: var(--fg); text-decoration: none; }
.term-nav a.active { color: var(--accent); border-bottom-color: var(--accent); }

.nav-spacer { flex: 1; }

.grep-search {
  position: relative;
}
.term-search {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 10px;
  background: var(--bg);
  min-width: 280px;
  font-size: 13px;
  font-family: var(--mono);
  color: var(--fg-faint);
  cursor: text;
  transition: border-color .12s, box-shadow .12s;
}
.term-search:hover,
.term-search:focus-within {
  border-color: var(--fg-faint);
}
.term-search:focus-within {
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--green) 18%, transparent);
}
.term-search .slash { color: var(--green); }
.grep-search-input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  padding: 0;
  background: transparent;
  color: var(--fg);
  font: inherit;
}
.grep-search-input::placeholder { color: var(--fg-faint); opacity: 1; }
.grep-search-input::-webkit-search-cancel-button { display: none; }
.term-search .kbd {
  color: var(--fg-faint);
  font-size: 11px;
  border: 1px solid var(--border);
  padding: 0 5px;
  border-radius: 3px;
}

.grep-search-panel {
  position: absolute;
  top: calc(100% + 16px);
  right: 0;
  width: min(680px, calc(100vw - 36px));
  max-height: min(620px, calc(100vh - var(--shell-h) - 32px));
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 16px 20px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg2);
  color: var(--fg);
  box-shadow: 0 18px 48px #0008;
}
.grep-search-panel[hidden] { display: none; }
.grep-search-status {
  min-height: 0;
  color: var(--fg-muted);
  font-family: var(--mono);
  font-size: 11px;
}
.grep-search-status:not(:empty) {
  margin-bottom: 12px;
}
.grep-search-status.is-error { color: var(--red); }
.grep-search-label {
  padding: 0 0 10px 2px;
  color: var(--fg-faint);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 1.8px;
  text-transform: uppercase;
}
.grep-search-empty {
  margin: 4px 2px 12px;
  color: var(--fg-faint);
  font-family: var(--mono);
  font-size: 12px;
}
.grep-search-recents,
.grep-search-results {
  display: grid;
  gap: 2px;
}
.grep-search-recent {
  display: flex;
  align-items: baseline;
  width: 100%;
  gap: 10px;
  border: 0;
  border-radius: 5px;
  padding: 7px 8px;
  background: transparent;
  color: var(--fg);
  text-align: left;
  cursor: pointer;
}
.grep-search-recent:hover,
.grep-search-recent.is-active {
  background: var(--bg3);
}
.grep-search-recent .recent-icon {
  color: var(--fg-faint);
  font-family: var(--mono);
}
.grep-search-recent code {
  color: var(--fg);
  font-family: var(--mono);
  font-size: 13px;
}
.syntax-tag { color: var(--blue); }
.syntax-type { color: var(--purple); }
.syntax-phrase { color: var(--green); }
.syntax-regex-flag { color: var(--green); }
.syntax-exclude { color: var(--red); }

.grep-search-result {
  display: grid;
  gap: 3px;
  padding: 10px 12px;
  border: 1px solid transparent;
  border-radius: 6px;
  color: var(--fg);
}
.grep-search-result:hover,
.grep-search-result.is-active {
  border-color: var(--border);
  background: var(--bg3);
  color: var(--fg);
  text-decoration: none;
}
.grep-search-result-title {
  overflow: hidden;
  color: var(--fg);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.3;
  text-overflow: ellipsis;
  white-space: nowrap;
}
[data-headline="Mono"] .grep-search-result-title {
  font-family: var(--mono);
  font-size: 14px;
}
.grep-search-result-excerpt {
  display: -webkit-box;
  overflow: hidden;
  color: var(--fg-muted);
  font-family: var(--sans);
  font-size: 11px;
  line-height: 1.45;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}
.grep-search-result-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--fg-faint);
  font-family: var(--mono);
  font-size: 10px;
}
.grep-search-result-type.is-essay { color: var(--purple); }
.grep-search-result-type.is-note { color: var(--yellow); }
.grep-search-no-results {
  padding: 18px 10px 22px;
  color: var(--fg-muted);
  font-family: var(--mono);
  font-size: 12px;
}
.grep-search-no-results .grep { color: var(--red); }

.grep-search-help {
  display: grid;
  gap: 1px;
  margin-top: 14px;
  padding: 14px 2px 10px;
  border-top: 1px solid var(--border-soft);
}
.grep-search-help button {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 12px;
  border: 0;
  border-radius: 4px;
  padding: 3px 6px;
  background: transparent;
  color: var(--fg-faint);
  font-family: var(--mono);
  font-size: 11px;
  text-align: left;
  cursor: pointer;
}
.grep-search-help button:hover {
  background: var(--bg3);
  color: var(--fg-muted);
}
.grep-search-help code {
  color: var(--fg);
  font: inherit;
}
.grep-search-help .syntax-tag { color: var(--blue); }
.grep-search-help .syntax-type { color: var(--purple); }
.grep-search-help .syntax-phrase { color: var(--green); }
.grep-search-help .syntax-exclude { color: var(--red); }
.grep-search-keys {
  display: flex;
  justify-content: flex-end;
  gap: 16px;
  padding: 10px 2px 0;
  border-top: 1px solid var(--border-soft);
  color: var(--fg-faint);
  font-family: var(--mono);
  font-size: 9px;
}
.grep-search-keys span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.grep-search-keys kbd {
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0 3px;
  background: var(--bg);
  color: var(--fg-muted);
  font: inherit;
}

.theme-toggle {
  margin-left: 12px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--fg-muted);
  font-family: var(--mono);
  font-size: 11px;
  padding: 5px 10px;
  border-radius: 6px;
  cursor: pointer;
}
.theme-toggle:hover { color: var(--fg); border-color: var(--fg-faint); }

/* ============================================================================
   Home / archive index
   ========================================================================== */
.index-wrap {
  max-width: var(--layout-width);
  margin: 0 auto;
  padding: 64px 64px 48px;
  font-family: var(--serif);
  color: var(--fg);
}
.index-intro {
  font-size: 20px;
  line-height: 1.55;
  color: var(--fg-soft);
  margin: 0;
  max-width: 640px;
}
.index-intro strong { color: var(--fg); font-weight: 500; }

.post-list { margin-top: 28px; }

.post-row {
  display: grid;
  grid-template-columns: 112px 1fr auto;
  align-items: baseline;
  gap: 18px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-soft);
  color: var(--fg);
}
.post-row:last-child { border-bottom: 0; }
.post-row:hover { text-decoration: none; }
.post-row:hover .row-title { color: var(--accent); }
.row-date { font-family: var(--mono); font-size: 12px; color: var(--fg-faint); }
.row-title {
  font-size: 19px;
  line-height: 1.3;
  color: var(--fg);
  transition: color .12s;
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}
.note-badge {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--yellow);
  border: 1px solid var(--yellow);
  padding: 1px 6px;
  border-radius: 2px;
  text-transform: uppercase;
  letter-spacing: .8px;
}
.row-read { font-family: var(--mono); font-size: 11px; color: var(--fg-faint); }

.index-empty {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--fg-muted);
  padding: 40px 0;
  text-align: center;
}
.index-empty .grep { color: var(--red); }

/* Pagination */
.pagination {
  margin-top: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--fg-muted);
}
.pagination a { color: var(--fg-muted); }
.pagination a:hover { color: var(--accent); text-decoration: none; }
.pagination .page-number { color: var(--fg-faint); }

/* ============================================================================
   Post — editorial article
   ========================================================================== */
.post-grid {
  max-width: var(--layout-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 64px;
  padding: 48px 64px;
}
.post-article { min-width: 0; max-width: var(--content-width); }
.post.is-note .post-grid { grid-template-columns: minmax(0, var(--content-width)); justify-content: start; }
.post.is-note .post-article { max-width: var(--content-width); }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--fg-muted);
  cursor: pointer;
  margin-bottom: 28px;
  font-size: 13px;
  font-family: var(--mono);
}
.back-link:hover { text-decoration: none; color: var(--fg); }
.back-link .arrow { color: var(--green); }

.post-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 1.4px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.post-meta .kind { color: var(--accent); }
.post.is-note .post-meta { color: var(--yellow); }
.post.is-note .post-meta .kind { color: var(--yellow); display: inline-flex; align-items: center; gap: 8px; }
.post.is-note .post-meta .kind::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--yellow); display: inline-block;
}
.post.is-note .post-meta .m { color: var(--fg-muted); }

.post-title {
  font-family: var(--headline);
  font-size: 52px;
  line-height: 1.05;
  margin: 0 0 20px;
  font-weight: 400;
  letter-spacing: -.8px;
  color: var(--fg);
}
[data-headline="Mono"] .post-title { font-weight: 700; letter-spacing: -1px; }
.post.is-note .post-title { font-size: 44px; letter-spacing: -.6px; }

.post-dek {
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.45;
  color: var(--fg-muted);
  margin: 0 0 36px;
  font-style: italic;
}

/* ---- Post content (rendered from the Ghost editor) ----------------------- */
.post-content {
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.65;
  color: var(--fg-soft);
  counter-reset: h2;
}
.post-content > * { margin: 0 0 22px; }
.post-content p { text-wrap: pretty; }
.post-content strong { color: var(--fg); font-weight: 600; }
.post-content em { font-style: italic; }
.post-content a { color: var(--accent); text-decoration: none; border-bottom: 1px solid color-mix(in srgb, var(--accent) 40%, transparent); }
.post-content a:hover { border-bottom-color: var(--accent); }

/* Drop-cap lede — first paragraph of the article */
.post-content > p:first-of-type {
  font-size: 26px;
  line-height: 1.4;
  color: var(--fg);
  margin-bottom: 28px;
}
.post-content > p:first-of-type::first-letter {
  float: left;
  font-size: 76px;
  line-height: .72;
  padding-right: 12px;
  padding-top: 6px;
  font-family: var(--serif);
  color: var(--accent);
  font-weight: 400;
}
.post.is-note .post-content > p:first-of-type,
.post-content.no-dropcap > p:first-of-type { font-size: 20px; }
.post.is-note .post-content > p:first-of-type::first-letter,
.post-content.no-dropcap > p:first-of-type::first-letter {
  float: none; font-size: inherit; padding: 0; color: inherit; font-weight: inherit; line-height: inherit;
}

/* Numbered H2 headings */
.post-content h2 {
  font-family: var(--sans);
  font-size: 24px;
  font-weight: 700;
  margin: 52px 0 18px;
  letter-spacing: -.3px;
  color: var(--fg);
  line-height: 1.25;
  scroll-margin-top: calc(var(--shell-h) + 16px);
}
.post-content h2::before {
  counter-increment: h2;
  content: counter(h2, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  font-weight: 500;
  margin-right: 14px;
}
.post-content h3 {
  font-family: var(--sans);
  font-size: 19px;
  font-weight: 700;
  margin: 36px 0 14px;
  color: var(--fg);
}

.post-content ul, .post-content ol { padding-left: 0; list-style: none; }
.post-content ul li, .post-content ol li {
  position: relative;
  padding-left: 32px;
  margin-bottom: 12px;
}
.post-content ol { counter-reset: li; }
.post-content ol li::before {
  counter-increment: li;
  content: counter(li, decimal-leading-zero);
  position: absolute;
  top: .35em;
  left: 0;
  font-family: var(--mono); font-size: 12px; color: var(--accent);
}
.post-content ul li::before {
  content: "▸";
  position: absolute;
  top: .35em;
  left: 0;
  font-family: var(--mono); font-size: 12px; color: var(--accent);
}

/* Blockquote → centred pull-quote */
.post-content blockquote {
  margin: 40px -40px;
  padding: 24px 0;
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.45;
  color: var(--fg);
  text-align: center;
  font-style: italic;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.post-content blockquote p { margin: 0; }

/* Ghost callout card → editorial "aside" / sidenote */
.post-content .kg-callout-card {
  margin: 28px 0;
  padding: 20px 22px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 6px;
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  color: var(--fg-muted);
  display: block;
}
.post-content .kg-callout-emoji { display: none; }
.post-content .kg-callout-text { color: var(--fg-muted); }

/* Ghost image / figure cards */
.post-content figure { margin: 36px 0; }

/* Koenig card widths — required by Ghost (GS050) and used by wide/full images */
.post-content .kg-width-wide { width: 100%; }
.post-content .kg-width-full { width: 100%; }
@media (min-width: 1080px) {
  .post-content .kg-width-wide { width: min(100vw, 1000px); max-width: 1000px; margin-left: calc((100% - min(100vw, 1000px)) / 2); }
  .post-content .kg-width-full { width: 96vw; max-width: 1400px; position: relative; left: 50%; transform: translateX(-50%); }
}
.post-content .kg-width-wide img,
.post-content .kg-width-full img { width: 100%; }
.post-content .kg-card { margin: 36px 0; }
.post-content figcaption,
.post-content .kg-card-figure figcaption {
  margin-top: 12px;
  font-size: 13px;
  font-family: var(--serif);
  color: var(--fg-muted);
  text-align: center;
  font-style: italic;
}
.post-content img { border-radius: 10px; border: 1px solid var(--border); }
.post-content hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border) 30%, var(--border) 70%, transparent);
  margin: 44px 0;
}

/* ---- Code blocks — dark IDE inlay ---------------------------------------- */
.post-content pre,
.code-figure {
  margin: 36px 0;
  font-family: var(--mono);
}
.post-content pre {
  background: #0d1117;
  border: 1px solid #21262d;
  border-radius: 10px;
  padding: 16px 18px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.7;
  color: #c9d1d9;
}
.post-content :not(pre) > code {
  font-family: var(--mono);
  font-size: .88em;
  background: var(--bg3);
  color: var(--fg);
  padding: .12em .4em;
  border-radius: 4px;
  border: 1px solid var(--border-soft);
}
/* Chrome bar added by main.js: wraps <pre> in .code-figure */
.code-figure { border-radius: 10px; overflow: hidden; border: 1px solid #21262d; background: #0d1117; }
.code-figure pre { margin: 0; border: none; border-radius: 0; }
.code-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px; border-bottom: 1px solid #21262d; background: #161b22;
  font-family: var(--mono); font-size: 12px;
}
.code-head .lang { display: flex; align-items: center; gap: 8px; color: #c9d1d9; }
.code-head .lang .brace { color: #58a6ff; }
.code-head .lang .sub { color: #6e7681; }
.code-head .actions { display: flex; gap: 14px; color: #8b949e; }
.code-head .actions button {
  background: none; border: none; color: #8b949e; font-family: var(--mono);
  font-size: 11px; cursor: pointer; padding: 0;
}
.code-head .actions button:hover { color: #58a6ff; }

/* Prism token colours → GitHub Dark (override the CDN base theme) */
.post-content pre[class*="language-"],
.post-content code[class*="language-"] { background: transparent; color: #c9d1d9; text-shadow: none; }
.token.comment, .token.prolog, .token.doctype, .token.cdata { color: var(--syn-comment); font-style: italic; }
.token.punctuation { color: #c9d1d9; }
.token.keyword, .token.boolean, .token.important, .token.atrule { color: var(--syn-keyword); }
.token.string, .token.char, .token.attr-value, .token.regex { color: var(--syn-string); }
.token.function, .token.class-name { color: var(--syn-fn); }
.token.number { color: var(--syn-num); }
.token.builtin, .token.tag, .token.constant, .token.symbol { color: var(--syn-type); }
.token.operator, .token.entity, .token.url, .token.variable { color: #79c0ff; }
.token.property, .token.attr-name { color: #79c0ff; }
.token.deleted { color: var(--red); }
.token.inserted { color: var(--green); }

/* ---- Footnotes ----------------------------------------------------------- */
.post-content .footnotes,
.post-footnotes { margin-top: 64px; padding-top: 28px; border-top: 1px solid var(--border); }
.post-content .footnotes ol { font-family: var(--serif); font-size: 15px; color: var(--fg-muted); }

/* ---- Right rail TOC (built by main.js) ----------------------------------- */
.toc-rail { position: sticky; top: calc(var(--shell-h) + 10px); align-self: start; }
.toc-title {
  font-family: var(--mono); font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 1.4px; color: var(--fg-muted); margin-bottom: 16px;
}
.toc-track { position: relative; padding-left: 16px; }
.toc-track .rail-bg {
  position: absolute; left: 0; top: 6px; bottom: 6px; width: 2px;
  background: var(--border); border-radius: 1px;
}
.toc-track .rail-fill {
  position: absolute; left: 0; top: 6px; width: 2px;
  background: var(--accent); border-radius: 1px; height: 0; transition: height .1s linear;
}
.toc-link {
  display: block; padding: 5px 0; font-size: 13px; line-height: 1.45;
  color: var(--fg-muted); font-family: var(--sans); cursor: pointer; transition: color .15s;
}
.toc-link:hover { color: var(--fg-soft); text-decoration: none; }
.toc-link.active { color: var(--fg); font-weight: 600; }
.toc-share {
  margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--border);
  font-size: 12px; font-family: var(--mono); color: var(--fg-faint); line-height: 1.8;
}
.toc-share .lbl {
  font-weight: 600; font-size: 10px; text-transform: uppercase; letter-spacing: 1.4px;
  color: var(--fg-muted); margin-bottom: 6px;
}
.toc-share a { display: block; color: var(--fg-muted); }
.toc-share a:hover { color: var(--accent); text-decoration: none; }

/* ============================================================================
   Page (about, colophon, etc.)
   ========================================================================== */
.page-wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 64px 32px 96px;
}
.page-kicker {
  font-family: var(--mono); font-size: 11px; color: var(--accent);
  margin-bottom: 14px; text-transform: uppercase; letter-spacing: 2px;
}
.page-title {
  font-family: var(--headline); font-size: 64px; line-height: 1.02;
  margin: 0 0 24px; font-weight: 400; letter-spacing: -1px; color: var(--fg);
}
[data-headline="Mono"] .page-title { font-weight: 700; letter-spacing: -1.2px; }
.page-dek {
  font-family: var(--serif); font-size: 22px; line-height: 1.45;
  color: var(--fg-muted); margin: 0 0 48px; font-style: italic;
}

/* ============================================================================
   Tag / author archive header
   ========================================================================== */
.archive-head {
  max-width: 880px; margin: 0 auto; padding: 56px 80px 0;
}
.archive-kicker {
  font-family: var(--mono); font-size: 11px; color: var(--fg-faint);
  text-transform: uppercase; letter-spacing: 1.6px; margin-bottom: 12px;
}
.archive-title {
  font-family: var(--headline); font-size: 44px; line-height: 1.05;
  margin: 0 0 12px; font-weight: 400; letter-spacing: -.6px; color: var(--fg);
}
[data-headline="Mono"] .archive-title { font-weight: 700; }
.archive-desc { font-family: var(--serif); font-size: 19px; color: var(--fg-muted); margin: 0; max-width: 620px; }
.archive-head + .index-wrap { padding-top: 40px; }

/* ============================================================================
   Footer
   ========================================================================== */
.site-footer {
  max-width: var(--layout-width);
  margin: 0 auto;
  padding: 32px 64px 64px;
  border-top: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fg-faint);
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.site-footer .foot-links { display: flex; gap: 16px; }
.site-footer .foot-links a { color: var(--fg-muted); }
.site-footer .foot-links a:hover { color: var(--accent); text-decoration: none; }

/* ============================================================================
   Error page
   ========================================================================== */
.error-wrap {
  max-width: 720px; margin: 0 auto; padding: 120px 32px;
  font-family: var(--mono); text-align: center;
}
.error-code { font-size: 15px; color: var(--red); margin-bottom: 16px; }
.error-msg { font-family: var(--serif); font-size: 28px; color: var(--fg); margin-bottom: 24px; }
.error-back { font-size: 13px; color: var(--accent); }

/* ============================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1080px) {
  .post-grid { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .toc-rail { display: none; }
}
@media (max-width: 720px) {
  .shell-nav { flex-wrap: wrap; gap: 10px; }
  .brand { order: 1; }
  .theme-toggle { order: 1; margin-left: auto; }
  .term-nav { margin-left: 0; order: 2; width: 100%; }
  .grep-search { order: 3; flex: 0 0 100%; width: 100%; }
  .term-search { min-width: 0; width: 100%; }
  .grep-search-panel {
    top: calc(100% + 10px);
    right: 0;
    left: 0;
    width: 100%;
    max-height: calc(100vh - 180px);
    padding-right: 14px;
    padding-left: 14px;
  }
  .grep-search-help button { grid-template-columns: 106px 1fr; }
  .grep-search-keys { display: none; }
  .nav-spacer { display: none; }
  .index-wrap { padding: 40px 24px; }
  .post-grid { padding: 32px 24px 40px; }
  .page-wrap { padding: 40px 24px 72px; }
  .post-title { font-size: 38px; }
  .page-title { font-size: 44px; }
  .post-row { grid-template-columns: 104px 1fr; }
  .row-read { display: none; }
  .post-content blockquote { margin-left: 0; margin-right: 0; }
  .site-footer, .archive-head { padding-left: 24px; padding-right: 24px; }
}