:root {
  --canvas: #e9e5dc;
  --paper: #f8f5ee;
  --ink: #24231f;
  --muted: #726d64;
  --rule: #d6d0c5;
  --rule-strong: #aaa399;
  --accent: #9b4034;
  --accent-soft: #eee0d9;
  --serif: serif;
  --sans: serif;
  --mono: monospace;
  --size-meta: 0.8125rem;
  --size-body: 1.0625rem;
  --size-subtitle: 1.25rem;
  --size-section: 1.875rem;
  --size-page: clamp(2.65rem, 7vw, 4.4rem);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--canvas);
}

body {
  margin: 28px auto;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--serif);
  font-size: var(--size-body);
  line-height: 1.75;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  position: relative;
  width: min(960px, calc(100% - 32px));
  min-height: calc(100vh - 56px);
  padding: 0 clamp(22px, 5vw, 48px);
  border: 1px solid rgba(68, 62, 54, 0.08);
  box-shadow: 0 18px 60px rgba(64, 57, 46, 0.09);
}

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

a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px dashed var(--accent);
}

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

.wordmark, .nav a, footer a, h1 a, h2 a, h3 a, .tag-card, .primary-link {
  border-bottom: none;
}

button, input, textarea, select {
  font: inherit;
}

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

.crop-h, .crop-v, .crop-c {
  position: absolute;
  pointer-events: none;
  z-index: 0;
}

.crop-h {
  inset: 18px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.crop-v {
  inset: 0 18px;
  border-left: 1px solid var(--rule);
  border-right: 1px solid var(--rule);
}

.crop-c {
  inset: 10px;
  border: 12px solid var(--paper);
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 8px 12px;
  color: var(--paper);
  background: var(--ink);
  font-family: var(--sans);
  font-size: var(--size-meta);
  transform: translateY(-180%);
}

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

.nav-top, .masthead {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  min-height: 78px;
  padding: 20px 0 17px;
  border-bottom: 1px solid var(--ink);
}

main.main, .main {
  position: relative;
  z-index: 2;
}

.logo {
  font-weight: bold;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-family: var(--sans);
  text-decoration: none;
}

.site-logo {
  width: 34px;
  height: 34px;
  border-radius: 4px;
  object-fit: contain;
  display: block;
}

.wordmark strong {
  font-size: var(--size-subtitle);
  line-height: 1;
  letter-spacing: 0.08em;
}

.wordmark span {
  color: var(--muted);
  font-size: var(--size-meta);
  letter-spacing: 0.08em;
}

.menu, .nav {
  display: flex;
  gap: clamp(14px, 3vw, 28px);
  font-family: var(--sans);
  font-size: var(--size-meta);
}

.menu span {
  display: inline-block;
}

.menu span.active {
  border-bottom: 2px solid var(--accent);
  margin-bottom: -2px;
}

.menu span.active a {
  color: var(--accent);
  font-weight: 600;
}

.menu a {
  position: relative;
  text-decoration: none;
}

footer {
  position: relative;
  z-index: 2;
  margin-top: 3rem;
  padding: 28px 0 32px;
  color: var(--muted);
  font-family: var(--sans);
  font-size: var(--size-meta);
  letter-spacing: 0.04em;
}

footer hr {
  border: 0;
  border-top: 1px solid var(--ink);
  margin: 0 0 20px;
}

.nav-bottom {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 24px;
}

.menu-bottom {
  position: absolute;
  right: 0;
}

@media (max-width: 600px) {
  .menu-bottom {
    position: static;
  }
}

.menu-bottom a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: none;
}

.menu-bottom a:hover {
  color: var(--accent);
}

.menu-bottom a + a::before,
.menu-bottom a + span::before,
.menu-bottom span + a::before {
  content: " · ";
  color: var(--rule-strong);
  margin: 0 4px;
}

.eyebrow, .route-kicker, .route-label, .direction-meta, .focus-number, .focus-terms, .post-index-heading, .article-back, .article-meta, .tag-section-heading > p {
  font-family: var(--sans);
  font-size: var(--size-meta);
}

.eyebrow, .route-kicker {
  margin: 0 0 18px;
  color: var(--accent);
  font-weight: 650;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.primary-link, .text-link {
  font-family: var(--sans);
  font-size: var(--size-meta);
  font-weight: 650;
  letter-spacing: 0.04em;
}

.primary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 7px 16px;
  color: var(--paper);
  background: var(--accent);
  border: 1px solid var(--accent);
  text-decoration: none;
}

.primary-link:hover {
  color: var(--paper);
  background: #84352c;
}

.text-link {
  color: var(--accent);
  text-decoration-line: underline;
  text-decoration-style: dashed;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.32em;
  border-bottom: none;
}

/* Yihui.org Letterpress Home Style */
.home-prose {
  max-width: 680px;
  margin: 0 auto;
  padding: clamp(28px, 4vw, 44px) 0 clamp(48px, 6vw, 64px);
  line-height: 1.85;
  font-size: var(--size-body);
}

.home-prose p {
  margin: 1.25em 0;
}

.home-prose blockquote {
  margin: 1.6em 0;
  padding: 12px 20px;
  border-left: 3px solid var(--accent);
  background: rgba(0, 0, 0, 0.02);
  color: var(--ink);
}

[data-theme="dark"] .home-prose blockquote {
  background: rgba(255, 255, 255, 0.03);
}

.home-prose blockquote p {
  margin: 0;
  font-style: italic;
}

.home-prose h2 {
  margin: 2.2em 0 0.8em;
  font-size: var(--size-section);
  font-weight: 600;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 0.3em;
  letter-spacing: -0.02em;
}

.home-prose ul {
  padding-left: 1.4em;
  margin: 1.1em 0;
}

.home-prose li {
  margin-bottom: 0.65em;
  line-height: 1.75;
}

.home-posts-list {
  list-style: none;
  padding-left: 0 !important;
  margin: 1.2em 0 !important;
}

.home-posts-list li {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 0.85em;
  font-size: var(--size-body);
}

.home-posts-list li span {
  font-family: var(--sans);
  font-size: var(--size-meta);
  color: var(--muted);
  flex-shrink: 0;
}

.home-posts-list li a {
  font-weight: 500;
}

/* Yihui.org Archive Log Page Style */
.archive {
  max-width: 680px;
  margin: 0 auto;
  padding: 12px 0 48px;
}

.archive h2 {
  font-size: var(--size-subtitle);
  font-weight: 600;
  margin: 2em 0 0.85em;
  padding-bottom: 0.3em;
  border-bottom: 1px solid var(--rule);
  color: var(--ink);
  letter-spacing: -0.01em;
}

.archive h2:first-child {
  margin-top: 0.6em;
}

.archive-list {
  list-style: none;
  padding-left: 0 !important;
  margin: 0 0 1.6em !important;
}

.archive-list li {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 0.85em;
  line-height: 1.75;
  font-size: var(--size-body);
}

.archive-date {
  font-family: var(--sans);
  font-size: var(--size-meta);
  color: var(--muted);
  flex-shrink: 0;
  min-width: 86px;
}

.archive-list li a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px dashed var(--accent);
  transition: color 0.15s ease;
}

.archive-list li a:hover {
  color: var(--accent);
}

.draft-badge {
  font-family: var(--sans);
  font-size: var(--size-meta);
  color: var(--accent);
  margin-left: 6px;
}

@media (max-width: 520px) {
  .archive-list li {
    gap: 10px;
  }
  .archive-date {
    min-width: 76px;
    font-size: 0.75rem;
  }
}

.home-hero {
  max-width: 680px;
  margin: 0 auto;
  padding: clamp(76px, 11vw, 112px) 0 clamp(70px, 10vw, 96px);
  border-bottom: 1px solid var(--rule);
}

.home-hero h1, .route-hero h1 {
  margin: 0;
  font-size: var(--size-page);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1.08;
}

.home-hero h1 em, .route-hero h1 em {
  color: var(--accent);
  font-weight: 400;
}

.home-lead, .route-lead, .article-description {
  max-width: 38em;
  margin: 30px 0 0;
  color: #4f4b44;
  font-size: var(--size-subtitle);
  line-height: 1.7;
}

.home-actions {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 34px;
}

.home-section {
  display: grid;
  grid-template-columns: minmax(150px, 190px) minmax(0, 1fr);
  gap: clamp(30px, 6vw, 58px);
  max-width: 680px;
  margin: 0 auto;
  padding: clamp(58px, 9vw, 82px) 0;
  border-bottom: 1px solid var(--rule);
}

.home-section:last-child {
  border-bottom: 0;
}

.home-section-header h2, .route-section h2, .tag-section-heading h2 {
  margin: 0;
  font-size: var(--size-section);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.28;
}

.home-copy p {
  margin: 0;
}

.home-copy p + p {
  margin-top: 1.35em;
}

.decision-section {
  display: block;
}

.decision-section .home-section-header {
  max-width: 420px;
  margin-bottom: 48px;
}

.decision-path {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.decision-path::before {
  position: absolute;
  top: 28px;
  right: 0;
  left: 0;
  height: 1px;
  background: var(--rule-strong);
  content: "";
}

.decision-path li {
  position: relative;
  padding-top: 48px;
}

.decision-path li::before {
  position: absolute;
  z-index: 1;
  top: 23px;
  left: 0;
  width: 11px;
  height: 11px;
  background: var(--paper);
  border: 2px solid var(--accent);
  border-radius: 50%;
  content: "";
}

.decision-path span {
  position: absolute;
  top: 0;
  left: 0;
  color: var(--muted);
  font-family: var(--sans);
  font-size: var(--size-meta);
}

.decision-path h3 {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: var(--size-subtitle);
  font-weight: 600;
}

.decision-path p {
  margin: 0;
  color: var(--muted);
  font-size: var(--size-meta);
  line-height: 1.7;
}

.focus-list {
  border-top: 1px solid var(--ink);
}

.focus-list article {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding: 22px 0 24px;
  border-bottom: 1px solid var(--rule);
}

.focus-number {
  padding-top: 3px;
  color: var(--accent);
}

.focus-list h3 {
  margin: 0 0 7px;
  font-size: var(--size-subtitle);
  font-weight: 600;
}

.focus-list p {
  margin: 0;
}

.focus-list .focus-terms {
  margin-top: 10px;
  color: var(--muted);
  line-height: 1.55;
}

.section-more {
  grid-column: 2;
  margin: 24px 0 0;
}

.route-hero {
  max-width: 680px;
  margin: 0 auto;
  padding: clamp(72px, 10vw, 96px) 0 clamp(58px, 8vw, 76px);
  border-bottom: 1px solid var(--rule);
}

.route-kicker {
  margin-bottom: 38px;
}

.route-label {
  margin: 0 0 16px;
  color: var(--muted);
  letter-spacing: 0.08em;
}

.route-intro {
  margin-top: 30px;
}

.route-intro .route-lead {
  margin-top: 0;
}

.feed-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 24px;
  margin-top: 22px;
  font-family: var(--sans);
  font-size: var(--size-meta);
}

.feed-links a {
  color: var(--accent);
  border-bottom: 1px dashed var(--accent);
}

.route-section {
  max-width: 680px;
  margin: 0 auto;
  padding: clamp(54px, 8vw, 76px) 0;
  border-bottom: 1px solid var(--rule);
}

.route-section:last-child {
  border-bottom: 0;
}

.route-columns {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: clamp(30px, 6vw, 58px);
}

.principle-list {
  border-top: 1px solid var(--ink);
}

.principle-list article {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 12px;
  padding: 20px 0 22px;
  border-bottom: 1px solid var(--rule);
}

.principle-list article > span {
  padding-top: 4px;
  color: var(--accent);
  font-family: var(--sans);
  font-size: var(--size-meta);
}

.principle-list h3 {
  margin: 0 0 6px;
  font-size: var(--size-subtitle);
  font-weight: 600;
}

.principle-list p, .empty-note p {
  margin: 0;
}

.empty-note {
  padding: 20px 0 22px;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--rule);
}

.empty-note span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-family: var(--sans);
  font-size: var(--size-meta);
}

.architecture-list {
  margin: 0;
  border-top: 1px solid var(--ink);
}

.architecture-list > div {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0 20px;
  border-bottom: 1px solid var(--rule);
}

.architecture-list dt {
  color: var(--accent);
  font-family: var(--sans);
  font-size: var(--size-meta);
  font-weight: 650;
}

.architecture-list dd {
  margin: 0;
}

.direction-grid {
  max-width: 680px;
  margin: 0 auto;
  padding: 18px 0 72px;
}

.direction-grid > article {
  display: grid;
  grid-template-columns: 142px minmax(0, 1fr);
  column-gap: 36px;
  padding: 42px 0 44px;
  border-bottom: 1px solid var(--rule);
}

.direction-meta {
  grid-row: 1 / span 4;
  color: var(--muted);
  line-height: 1.55;
}

.direction-meta span {
  display: block;
  margin-bottom: 10px;
  color: var(--accent);
}

.direction-meta p {
  margin: 0;
}

.direction-grid h2 {
  margin: 0 0 10px;
  font-size: var(--size-section);
  font-weight: 500;
  line-height: 1.32;
}

.direction-grid h2 + p {
  margin: 0;
}

.direction-grid ul {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  margin: 18px 0 0;
  padding: 0;
  color: var(--muted);
  font-family: var(--sans);
  font-size: var(--size-meta);
  list-style: none;
}

.direction-grid li::before {
  color: var(--accent);
  content: "·";
  margin-right: 7px;
}

.post-index {
  max-width: 680px;
  margin: 0 auto;
  padding: 34px 0 78px;
}

.post-index-heading, .post-index article {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr) 150px;
  gap: 20px;
}

.post-index-heading {
  padding: 0 0 11px;
  color: var(--muted);
  border-bottom: 1px solid var(--ink);
  letter-spacing: 0.08em;
}

.post-index-heading p {
  margin: 0;
}

.post-index article {
  align-items: baseline;
  padding: 24px 0 26px;
  border-bottom: 1px solid var(--rule);
}

.post-index article > p {
  margin: 0;
  color: var(--muted);
  font-family: var(--sans);
  font-size: var(--size-meta);
}

.post-index article > p span, .tag-post-list article > p span {
  display: inline-block;
  min-width: 30px;
  color: var(--accent);
}

.post-index h2 {
  margin: 0;
  font-size: var(--size-subtitle);
  font-weight: 600;
  line-height: 1.45;
}

.post-index h2 a {
  border-bottom: none;
}

.post-topic-links {
  display: flex;
  flex-wrap: wrap;
  gap: 5px 12px;
  font-family: var(--sans);
  font-size: var(--size-meta);
}

.post-topic-links a, .post-topic-links span {
  color: var(--muted);
  border-bottom: 1px dashed var(--rule-strong);
}

.post-empty {
  padding: 34px 0;
  border-bottom: 1px solid var(--rule);
}

.post-empty p {
  margin: 0;
  font-size: var(--size-subtitle);
}

.post-empty span {
  display: block;
  margin-top: 7px;
  color: var(--muted);
  font-family: var(--sans);
  font-size: var(--size-meta);
}

.tag-section {
  max-width: 680px;
  margin: 0 auto;
  padding: 48px 0 78px;
}

.tag-section-heading {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr);
  gap: 20px;
  align-items: end;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--ink);
}

.tag-section-heading > p {
  margin: 0;
  color: var(--muted);
  letter-spacing: 0.08em;
}

.tag-cloud {
  display: block;
}

.tag-card {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  gap: 20px;
  align-items: baseline;
  padding: 20px 0 22px;
  border-bottom: 1px solid var(--rule);
}

.tag-card > span, .tag-card small {
  color: var(--muted);
  font-family: var(--sans);
  font-size: var(--size-meta);
}

.tag-card > span {
  color: var(--accent);
}

.tag-card strong {
  font-size: var(--size-subtitle);
  font-weight: 600;
}

.article-header {
  max-width: 680px;
  margin: 0 auto;
  padding: 62px 0 48px;
  border-bottom: 1px solid var(--ink);
}

.article-back {
  color: var(--accent);
  border-bottom: 1px dashed var(--accent);
}

.draft-banner {
  margin: 26px 0 0;
  padding: 8px 12px;
  color: var(--accent);
  background: var(--accent-soft);
  border-left: 2px solid var(--accent);
  font-family: var(--sans);
  font-size: var(--size-meta);
}

.article-header h1, .article-header h1.title {
  margin: 36px 0 0;
  font-size: var(--size-page);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.12;
}

.article-meta, .meta-line {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 7px 18px;
  margin-top: 26px;
  color: var(--muted);
  font-family: var(--sans);
  font-size: var(--size-meta);
}

.meta-line .author {
  font-weight: 600;
  color: var(--ink);
}

.meta-line .author + .date::before {
  content: " / ";
  color: var(--rule-strong);
  margin: 0 4px;
}

.article-tags {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 7px 14px;
}

.article-tags a {
  color: var(--accent);
  border-bottom: 1px dashed var(--accent);
}

.article-layout {
  max-width: 680px;
  margin: 0 auto;
  padding: 36px 0 80px;
}

.article-layout > aside {
  margin-bottom: 48px;
}

.post-navigation, .post-nav {
  max-width: 680px;
  margin: 0 auto 70px;
  padding-top: 22px;
  border-top: 1px solid var(--ink);
}

.post-navigation-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.post-navigation-links a {
  display: grid;
  gap: 6px;
  border-bottom: none;
}

.post-navigation-links a:last-child {
  text-align: right;
}

.post-navigation-links span, .post-navigation > p {
  color: var(--muted);
  font-family: var(--sans);
  font-size: var(--size-meta);
}

.post-navigation-links strong {
  font-size: var(--size-subtitle);
  font-weight: 600;
  line-height: 1.45;
}

.post-navigation > p {
  margin: 22px 0 0;
  text-align: center;
}

.article-toc, #TableOfContents {
  padding: 18px 20px;
  background: rgba(0, 0, 0, 0.02);
  border: 1px solid var(--rule);
  margin-bottom: 2em;
}

.article-toc > p, #TableOfContents > p {
  margin: 0 0 10px;
  color: var(--accent);
  font-family: var(--sans);
  font-size: var(--size-meta);
  font-weight: 650;
  letter-spacing: 0.12em;
}

#TableOfContents ul, #TableOfContents ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

#TableOfContents > ul, #TableOfContents > ol {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

#TableOfContents ul ul, #TableOfContents ol ol {
  padding-left: 1.25rem;
  margin-top: 4px;
  border-left: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

#TableOfContents li {
  position: relative;
  padding-left: 14px;
  line-height: 1.45;
}

#TableOfContents li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: bold;
}

#TableOfContents a {
  color: var(--muted);
  font-family: var(--sans);
  font-size: var(--size-meta);
  border-bottom: none;
}

#TableOfContents a:hover {
  color: var(--accent);
}

.markdown-body {
  min-width: 0;
  color: #312f2a;
}

.markdown-body h2 {
  margin: 2.25em 0 0.7em;
  padding-top: 0.55em;
  border-top: 1px solid var(--rule);
  font-size: var(--size-section);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.35;
  scroll-margin-top: 24px;
}

.markdown-body h3 {
  margin: 1.9em 0 0.65em;
  font-size: var(--size-subtitle);
  font-weight: 650;
  line-height: 1.45;
  scroll-margin-top: 24px;
}

.markdown-body p {
  margin: 1.25em 0;
}

.markdown-body a {
  color: var(--accent);
  border-bottom: 1px dashed var(--accent);
}

.markdown-body ul, .markdown-body ol {
  margin: 1.25em 0;
  padding-left: 1.45em;
}

.markdown-body li + li {
  margin-top: 0.45em;
}

.markdown-body blockquote {
  margin: 1.8em 0;
  padding: 0.1em 0 0.1em 1.25em;
  color: #555149;
  border-left: 2px solid var(--accent);
  background: rgba(0, 0, 0, 0.015);
}

.markdown-body code {
  padding: 0.12em 0.28em;
  color: #71352d;
  background: #eee8de;
  border-radius: 2px;
  font-family: var(--mono);
  font-size: var(--size-meta);
}

.markdown-body pre {
  max-width: 100%;
  margin: 1.8em 0;
  padding: 18px 20px;
  overflow-x: auto;
  background: #efebe3;
  border: 1px solid var(--rule);
  border-radius: 0;
  line-height: 1.65;
}

.markdown-body pre code {
  padding: 0;
  color: inherit;
  background: transparent;
}

.markdown-body table {
  display: block;
  width: 100%;
  margin: 1.8em 0;
  overflow-x: auto;
  border-collapse: collapse;
  font-size: var(--size-meta);
}

.markdown-body th, .markdown-body td {
  min-width: 112px;
  padding: 9px 12px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  text-align: left;
}

.markdown-body th {
  font-family: var(--sans);
  font-weight: 650;
}

.not-found {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 44px;
  align-items: start;
  max-width: 680px;
  min-height: 62vh;
  margin: 0 auto;
  padding: clamp(80px, 13vw, 130px) 0;
}

.not-found-code {
  margin: 0;
  color: var(--accent);
  font-family: var(--sans);
  font-size: var(--size-page);
  font-weight: 700;
  line-height: 1;
}

.not-found h1 {
  margin: 0;
  font-size: var(--size-section);
  font-weight: 600;
}

.not-found h1 + p {
  margin: 18px 0 0;
  color: var(--muted);
}

.not-found-actions {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-top: 30px;
}

.anchor {
  display: inline-block;
  margin-left: 6px;
  color: var(--rule-strong);
  font-size: 0.85em;
  opacity: 0;
  transition: opacity 0.15s;
  border-bottom: none;
}

h2:hover .anchor, h3:hover .anchor {
  opacity: 1;
}

@media (max-width: 720px) {
  .nav-top, .masthead {
    align-items: flex-start;
  }

  .wordmark {
    display: grid;
    gap: 7px;
  }

  .home-section, .route-columns {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .section-more {
    grid-column: 1;
  }

  .decision-path {
    grid-template-columns: 1fr 1fr;
    gap: 34px 28px;
  }

  .decision-path::before {
    display: none;
  }

  .decision-path li {
    padding: 28px 0 0;
    border-top: 1px solid var(--rule);
  }

  .decision-path li::before {
    top: -6px;
  }

@media (max-width: 720px) {
  .nav-top, .masthead {
    align-items: flex-start;
  }

  .wordmark {
    display: grid;
    gap: 7px;
  }

  .menu, .nav {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    flex-wrap: nowrap;
    max-width: 100%;
    padding-bottom: 4px;
    gap: 16px;
  }

  .menu::-webkit-scrollbar, .nav::-webkit-scrollbar {
    display: none;
  }

  .menu span, .nav span {
    flex-shrink: 0;
  }

  .home-section, .route-columns {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .section-more {
    grid-column: 1;
  }

  .decision-path {
    grid-template-columns: 1fr 1fr;
    gap: 34px 28px;
  }

  .decision-path::before {
    display: none;
  }

  .decision-path li {
    padding: 28px 0 0;
    border-top: 1px solid var(--rule);
  }

  .decision-path li::before {
    top: -6px;
  }

  .post-index-heading {
    display: none;
  }

  .post-index article {
    grid-template-columns: 102px minmax(0, 1fr);
  }

  .post-topic-links {
    grid-column: 2;
  }
}

@media (max-width: 520px) {
  body {
    width: 100%;
    margin: 0;
    padding: 0 20px;
    border: 0;
    box-shadow: none;
  }

  .nav-top, .masthead {
    display: block;
    padding: 19px 0 16px;
  }

  .menu, .nav {
    margin-top: 17px;
    gap: 14px;
  }

  .home-hero, .route-hero {
    padding: 58px 0 52px;
  }

  .decision-path {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .not-found {
    display: block;
    padding: 76px 0;
  }
}

/* Dark Mode Support (Paper-Ink Inverted Aesthetic) */
@media (prefers-color-scheme: dark) {
  :root {
    --canvas: #12110f;
    --paper: #1c1b18;
    --ink: #dfdbd2;
    --muted: #9c9588;
    --rule: #33312a;
    --rule-strong: #4f4b41;
    --accent: #df786a;
    --accent-soft: #382522;
  }

  body {
    border-color: rgba(255, 255, 255, 0.08);
    box-shadow: 0 18px 60px rgba(0, 0, 0, 0.45);
  }

  .crop-c {
    border-color: var(--paper);
  }

  .home-lead, .route-lead, .article-description {
    color: #b8b3a7;
  }

  .markdown-body {
    color: #dfdbd2;
  }

  .markdown-body pre {
    background: #262420;
    border-color: var(--rule);
  }

  .markdown-body code {
    color: #e5978b;
    background: #2c2924;
  }

  .markdown-body blockquote {
    color: #b8b3a7;
    background: rgba(255, 255, 255, 0.02);
  }

  .article-toc, #TableOfContents {
    background: rgba(255, 255, 255, 0.02);
  }
}