:root {
  --paper: #100f0d;
  --paper-raised: #171614;
  --ink: #ece7dc;
  --ink-soft: #cfc8b8;
  --muted: #8a8378;
  --rule: #2a2622;
  --accent: #2a4ea6;
  --accent-soft: #2a4ea626;
  --serif: "Newsreader", "Iowan Old Style", Georgia, serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --content: 1180px;
  --article: 720px;
  --gutter: clamp(20px, 4vw, 56px);
}

[data-theme="mono"] {
  --paper: #fff;
  --paper-raised: #f4f4f3;
  --ink: #000;
  --ink-soft: #1a1a1a;
  --muted: #666;
  --rule: #dcdcd8;
  --accent: #2a4ea6;
  --accent-soft: #2a4ea626;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
  scroll-behavior: smooth;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

html::-webkit-scrollbar {
  display: none;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--accent);
  color: #fff;
}

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible,
button:focus-visible,
select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 8px 12px;
  background: var(--ink);
  color: var(--paper);
  font: 12px/1.2 var(--mono);
  transform: translateY(-150%);
}

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

.shell {
  width: min(100%, var(--content));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--rule);
  background: color-mix(in oklab, var(--paper) 82%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: var(--content);
  margin: 0 auto;
  padding: 14px var(--gutter);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  border: none;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.site-nav ul {
  display: flex;
  gap: 22px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.site-nav li a {
  color: var(--muted);
  transition: color 160ms ease;
}

.site-nav li a span {
  margin-right: 6px;
  color: var(--accent);
}

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

.blog-header {
  padding-top: clamp(72px, 11vw, 140px);
  padding-bottom: clamp(56px, 8vw, 96px);
}

.section-kicker {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 48px;
  margin-bottom: 36px;
  color: var(--muted);
  font: 500 11px/1.4 var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-kicker span:first-child {
  color: var(--accent);
}

.blog-heading-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.85fr) 1fr;
  gap: 48px;
  align-items: end;
}

.blog-heading-grid h1 {
  margin: 0;
  font: 600 clamp(54px, 9vw, 112px) / 0.92 var(--mono);
  letter-spacing: -0.07em;
}

.blog-heading-grid p {
  max-width: 38rem;
  margin: 0 0 5px;
  color: var(--ink-soft);
  font-size: clamp(18px, 2vw, 22px);
  text-wrap: pretty;
}

.blog-list {
  padding-bottom: 120px;
}

.list-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--ink);
  font-family: var(--mono);
  text-transform: uppercase;
}

.list-heading h2 {
  margin: 0;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.list-heading span {
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: end;
  padding: 20px 0;
  border-bottom: 1px solid var(--rule);
}

.filters label {
  display: grid;
  gap: 7px;
  min-width: 180px;
  color: var(--muted);
  font: 10px/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.filters select,
.filters button {
  min-height: 38px;
  border: 1px solid var(--rule);
  border-radius: 0;
  background: var(--paper);
  color: var(--ink-soft);
  font: 12px/1 var(--mono);
}

.filters select {
  padding: 0 34px 0 10px;
}

.filters button {
  padding: 0 14px;
  cursor: pointer;
}

.filters button:hover {
  border-color: var(--accent);
  color: var(--ink);
}

.post-row {
  display: grid;
  grid-template-columns: 124px 112px minmax(0, 1fr) 64px 28px;
  gap: 24px;
  align-items: start;
  padding: 30px 0 32px;
  border-bottom: 1px solid var(--rule);
}

.post-row[hidden] {
  display: none;
}

.post-date,
.post-category,
.post-reading,
.post-arrow,
.featured-label,
.draft-badge {
  font-family: var(--mono);
}

.post-date,
.post-category,
.post-reading {
  padding-top: 5px;
  color: var(--muted);
  font-size: 10.5px;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

.post-category {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 7px;
  color: var(--accent);
  overflow-wrap: anywhere;
}

.featured-label,
.draft-badge {
  padding: 3px 5px;
  border: 1px solid var(--rule);
  color: var(--muted);
  font-size: 9px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.draft-badge {
  border-color: var(--accent);
  color: var(--accent);
}

.post-copy h3 {
  margin: 0 0 9px;
  font: 500 clamp(19px, 2.4vw, 27px) / 1.28 var(--mono);
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.post-copy h3 a {
  background-image: linear-gradient(var(--accent), var(--accent));
  background-position: 0 100%;
  background-repeat: no-repeat;
  background-size: 0 1px;
  transition:
    color 160ms ease,
    background-size 200ms ease;
}

.post-row:has(.post-copy h3 a:hover) .post-copy h3 a,
.post-copy h3 a:hover {
  color: var(--accent);
  background-size: 100% 1px;
}

.post-copy p {
  max-width: 46rem;
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.55;
  text-wrap: pretty;
}

.post-reading {
  white-space: nowrap;
}

.post-arrow {
  padding-top: 0;
  color: var(--muted);
  font-size: 18px;
  text-align: right;
  transition:
    color 160ms ease,
    transform 160ms ease;
}

.post-arrow:hover {
  color: var(--accent);
  transform: translate(2px, -2px);
}

.empty-state {
  margin: 0;
  padding: clamp(56px, 9vw, 104px) 0;
  border-bottom: 1px solid var(--rule);
  color: var(--muted);
  font: 14px/1.5 var(--mono);
  letter-spacing: 0.03em;
}

.article-shell {
  width: min(100%, calc(var(--article) + 2 * var(--gutter)));
  margin-inline: auto;
  padding: clamp(56px, 9vw, 104px) var(--gutter) 120px;
}

.back-link {
  display: inline-flex;
  gap: 9px;
  align-items: center;
  margin-bottom: clamp(54px, 8vw, 88px);
  color: var(--muted);
  font: 11px/1 var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.back-link:hover {
  color: var(--accent);
}

.article-header {
  padding-bottom: clamp(42px, 6vw, 64px);
  border-bottom: 1px solid var(--rule);
}

.article-labels {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 24px;
  color: var(--accent);
  font: 500 10.5px/1 var(--mono);
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.article-header h1 {
  margin: 0;
  font: 600 clamp(34px, 6vw, 64px) / 1.08 var(--mono);
  letter-spacing: -0.06em;
  text-wrap: balance;
}

.article-summary {
  margin: 26px 0 0;
  color: var(--ink-soft);
  font-size: clamp(19px, 2.4vw, 23px);
  line-height: 1.55;
  text-wrap: pretty;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-top: 30px;
  color: var(--muted);
  font: 10.5px/1.5 var(--mono);
  letter-spacing: 0.025em;
  text-transform: uppercase;
}

.article-meta span:not(:last-child)::after {
  margin-left: 24px;
  color: var(--rule);
  content: "/";
}

.article-body {
  padding-top: clamp(42px, 7vw, 70px);
  color: var(--ink-soft);
  font-size: clamp(18px, 2vw, 20px);
  line-height: 1.78;
}

.article-body > :first-child {
  margin-top: 0;
}

.article-body > :last-child {
  margin-bottom: 0;
}

.article-body h2,
.article-body h3,
.article-body h4,
.article-body h5,
.article-body h6 {
  margin: 2.2em 0 0.75em;
  color: var(--ink);
  font-family: var(--mono);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.article-body h2 {
  padding-top: 0.6em;
  border-top: 1px solid var(--rule);
  font-size: 1.45em;
}

.article-body h3 {
  font-size: 1.16em;
}

.article-body p,
.article-body ul,
.article-body ol,
.article-body blockquote,
.article-body pre,
.article-body .table-wrap,
.article-body figure {
  margin: 0 0 1.45em;
}

.article-body ul,
.article-body ol {
  padding-left: 1.4em;
}

.article-body li {
  margin: 0.35em 0;
  padding-left: 0.2em;
}

.article-body li::marker {
  color: var(--accent);
  font-family: var(--mono);
}

.article-body a {
  border-bottom: 1px solid var(--accent);
  color: var(--ink);
}

.article-body a:hover {
  color: var(--accent);
}

.article-body blockquote {
  padding: 0.35em 0 0.35em 1.2em;
  border-left: 2px solid var(--accent);
  color: var(--muted);
  font-style: italic;
}

.article-body blockquote > :last-child {
  margin-bottom: 0;
}

.article-body img {
  display: block;
  width: 100%;
  height: auto;
  margin: 2em 0;
  border: 1px solid var(--rule);
}

.article-body code {
  padding: 0.12em 0.32em;
  background: var(--paper-raised);
  color: #b8c9f7;
  font: 0.82em/1.4 var(--mono);
}

.article-body pre {
  max-width: 100%;
  overflow-x: auto;
  padding: 22px;
  border: 1px solid var(--rule);
  border-radius: 0;
  background: #0b0b0d;
  tab-size: 2;
}

.article-body pre code {
  padding: 0;
  background: none;
  color: #c9c7c1;
  font-size: 13px;
  line-height: 1.7;
}

.article-body .katex {
  color: var(--ink);
}

.article-body .katex-block {
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 0.35em 0;
  text-align: center;
}

.hljs-keyword,
.hljs-selector-tag,
.hljs-literal,
.hljs-section,
.hljs-link {
  color: #7da0f8;
}

.hljs-string,
.hljs-title,
.hljs-name,
.hljs-type,
.hljs-attribute,
.hljs-symbol,
.hljs-bullet,
.hljs-addition,
.hljs-variable,
.hljs-template-tag,
.hljs-template-variable {
  color: #b9d38c;
}

.hljs-comment,
.hljs-quote,
.hljs-deletion,
.hljs-meta {
  color: #777e8d;
}

.hljs-number,
.hljs-regexp,
.hljs-built_in,
.hljs-params {
  color: #d4a7d9;
}

.table-wrap {
  max-width: 100%;
  overflow-x: auto;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86em;
}

.article-body th,
.article-body td {
  padding: 10px 12px;
  border: 1px solid var(--rule);
  text-align: left;
  vertical-align: top;
}

.article-body th {
  color: var(--ink);
  font: 600 0.8em/1.4 var(--mono);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.article-body hr {
  margin: 3em 0;
  border: 0;
  border-top: 1px solid var(--rule);
}

.article-footer {
  margin-top: clamp(54px, 8vw, 88px);
  padding-top: 24px;
  border-top: 1px solid var(--ink);
}

.article-tags {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 18px;
  align-items: start;
  color: var(--muted);
  font: 10px/1.5 var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.article-tags ul {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.article-tags li {
  padding: 4px 7px;
  border: 1px solid var(--rule);
  color: var(--ink-soft);
  text-transform: none;
}

.article-related {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  margin-top: 48px;
  background: var(--rule);
  border: 1px solid var(--rule);
}

.article-related > * {
  min-width: 0;
  background: var(--paper);
}

.article-related a {
  display: grid;
  gap: 9px;
  padding: 20px;
}

.article-related a:last-child {
  text-align: right;
}

.article-related span {
  color: var(--muted);
  font: 9.5px/1.3 var(--mono);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.article-related strong {
  color: var(--ink-soft);
  font: 500 12px/1.5 var(--mono);
}

.article-related a:hover strong {
  color: var(--accent);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 25px;
  padding-bottom: 40px;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font: 10px/1.4 var(--mono);
  letter-spacing: 0.04em;
}

.site-footer span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.site-footer i {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

.site-footer a:hover {
  color: var(--accent);
}

.theme-toggle {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--rule);
  border-radius: 2px;
  background: var(--paper);
  box-shadow: 0 2px 12px rgb(0 0 0 / 12%);
  color: var(--muted);
  font: 11px/1.55 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition:
    color 0.2s,
    border-color 0.2s,
    background 0.2s;
}

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

@media (max-width: 900px) {
  .site-nav ul {
    gap: 14px;
  }

  .site-nav li a span {
    display: none;
  }

  .post-row {
    grid-template-columns: 108px 100px minmax(0, 1fr) 28px;
  }

  .post-reading {
    grid-column: 3;
  }

  .post-arrow {
    grid-column: 4;
    grid-row: 1;
  }
}

@media (max-width: 680px) {
  .nav-inner {
    display: block;
    padding-top: 14px;
    padding-bottom: 12px;
  }

  .brand {
    display: inline-block;
    margin-bottom: 12px;
  }

  .site-nav ul {
    max-width: 100%;
    gap: 18px;
    overflow-x: auto;
    padding-bottom: 3px;
    scrollbar-width: none;
  }

  .site-nav ul::-webkit-scrollbar {
    display: none;
  }

  .site-nav li {
    flex: 0 0 auto;
  }

  .section-kicker,
  .blog-heading-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .blog-heading-grid h1 {
    letter-spacing: -0.06em;
  }

  .post-row {
    grid-template-columns: 1fr auto;
    gap: 9px 20px;
    padding: 25px 0 28px;
  }

  .post-date,
  .post-category,
  .post-copy,
  .post-reading {
    grid-column: 1;
  }

  .post-date {
    grid-row: 1;
  }

  .post-category {
    grid-row: 2;
    flex-direction: row;
    align-items: center;
  }

  .post-copy {
    grid-row: 3;
    margin-top: 8px;
  }

  .post-reading {
    grid-row: 4;
    padding-top: 4px;
  }

  .post-arrow {
    grid-column: 2;
    grid-row: 1 / span 4;
  }

  .filters label {
    flex: 1 1 145px;
    min-width: 0;
  }

  .filters select {
    width: 100%;
  }

  .article-meta {
    display: grid;
    gap: 7px;
  }

  .article-meta span::after {
    display: none;
  }

  .article-body {
    line-height: 1.72;
  }

  .article-body pre {
    margin-right: calc(-1 * var(--gutter));
    margin-left: calc(-1 * var(--gutter));
    padding-right: var(--gutter);
    padding-left: var(--gutter);
    border-right: 0;
    border-left: 0;
  }

  .article-tags {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .article-related {
    grid-template-columns: 1fr;
  }

  .article-related a:last-child {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}