:root {
  --article-bg: #f2e8d6;
  --article-surface: #fdf7ec;
  --article-surface-muted: #f6eedf;
  --article-ink: #352416;
  --article-text: #2f2820;
  --article-muted: #6f6456;
  --article-accent: #bf6233;
  --article-accent-strong: #9a4a22;
  --article-border: rgba(120, 86, 46, 0.16);
  --article-code-bg: #2a2218;
  --article-code-text: #e8ded0;
  --article-shadow: 0 18px 48px rgba(66, 45, 24, 0.08);
  --header-height: 64px;
  --content-wide: 1180px;
  --content-detail: 1120px;
  --font-sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", sans-serif;
  --font-serif-zh: "Songti SC", "STSong", "Noto Serif SC", Georgia, serif;
  --font-serif-en: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --font-mono: "SFMono-Regular", "Cascadia Code", "Roboto Mono", Menlo, Consolas, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  background: var(--article-bg);
  color: var(--article-text);
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
  text-rendering: optimizeLegibility;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 12% 4%, rgba(191, 98, 51, 0.065), transparent 30rem),
    radial-gradient(circle at 88% 14%, rgba(108, 129, 92, 0.055), transparent 28rem),
    var(--article-bg);
  color: var(--article-text);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  z-index: -1;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 140 140' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.025'/%3E%3C/svg%3E");
  content: "";
  pointer-events: none;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 3px solid var(--article-accent-strong);
  outline-offset: 3px;
}

::selection {
  background: rgba(191, 98, 51, 0.2);
}

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 8px;
  left: 12px;
  padding: 10px 14px;
  border-radius: 12px;
  background: var(--article-ink);
  color: #fffaf2;
  font-weight: 700;
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

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

.reading-progress {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  pointer-events: none;
}

.reading-progress span {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--article-accent-strong);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 80ms linear;
}

.site-header {
  position: sticky;
  z-index: 80;
  top: 0;
  height: var(--header-height);
  border-bottom: 1px solid var(--article-border);
  background: rgba(242, 232, 214, 0.9);
  backdrop-filter: blur(18px) saturate(120%);
}

.site-header__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  width: min(calc(100% - 64px), var(--content-wide));
  height: 100%;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  justify-self: start;
  min-height: 44px;
  gap: 10px;
  color: var(--article-ink);
  font-family: var(--font-serif-en);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.015em;
  text-decoration: none;
}

.brand img {
  filter: drop-shadow(0 4px 8px rgba(64, 42, 22, 0.12));
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  border: 1px solid rgba(120, 86, 46, 0.12);
  border-radius: 999px;
  background: rgba(253, 247, 236, 0.62);
}

.site-nav a,
.language-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  color: var(--article-muted);
  font-size: 0.875rem;
  font-weight: 700;
  text-decoration: none;
  transition: color 180ms ease, background 180ms ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  background: var(--article-surface);
  color: var(--article-ink);
}

.language-link {
  justify-self: end;
  min-height: 44px;
  gap: 7px;
  color: var(--article-accent-strong);
}

.language-link span {
  display: grid;
  width: 26px;
  height: 26px;
  place-items: center;
  border: 1px solid rgba(154, 74, 34, 0.24);
  border-radius: 50%;
  font-family: var(--font-serif-zh);
}

.language-link:hover {
  background: rgba(253, 247, 236, 0.76);
}

main {
  min-height: calc(100vh - var(--header-height) - 144px);
}

.listing-hero {
  width: min(calc(100% - 64px), var(--content-wide));
  padding: 92px 0 64px;
  margin: 0 auto;
  text-align: center;
}

.listing-hero__eyebrow,
.section-kicker,
.article-card__topic,
.article-topic {
  margin: 0;
  color: var(--article-accent-strong);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  line-height: 1.4;
  text-transform: uppercase;
}

.listing-hero h1 {
  max-width: 900px;
  margin: 14px auto 18px;
  color: var(--article-ink);
  font-family: var(--font-serif-zh);
  font-size: clamp(2.7rem, 6vw, 5.6rem);
  font-weight: 650;
  letter-spacing: -0.045em;
  line-height: 0.98;
}

.article-site--en .listing-hero h1,
.article-site--en .article-header h1,
.article-site--en .state-page h1 {
  font-family: var(--font-serif-en);
}

.listing-hero > p {
  max-width: 680px;
  margin: 0 auto;
  color: var(--article-muted);
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.8;
}

.topic-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 32px;
  scroll-margin-top: calc(var(--header-height) + 16px);
}

.topic-list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  gap: 8px;
  border: 1px solid var(--article-border);
  border-radius: 999px;
  background: rgba(253, 247, 236, 0.52);
  color: var(--article-muted);
  font-size: 0.875rem;
  font-weight: 700;
  text-decoration: none;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.topic-list a span {
  min-width: 22px;
  padding: 2px 6px;
  border-radius: 999px;
  background: rgba(120, 86, 46, 0.08);
  font-size: 0.72rem;
  text-align: center;
}

.topic-list a:hover {
  border-color: rgba(154, 74, 34, 0.34);
  color: var(--article-ink);
  transform: translateY(-1px);
}

.topic-list a[aria-current="page"] {
  border-color: var(--article-ink);
  background: var(--article-ink);
  color: #fffaf2;
}

.topic-list a[aria-current="page"] span {
  background: rgba(255, 255, 255, 0.13);
}

.listing-shell,
.related-shell {
  width: min(calc(100% - 64px), var(--content-wide));
  padding-bottom: 96px;
  margin: 0 auto;
}

.listing-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--article-border);
}

.listing-heading h2 {
  margin: 6px 0 18px;
  color: var(--article-ink);
  font-family: var(--font-serif-zh);
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  font-weight: 650;
  letter-spacing: -0.025em;
  line-height: 1.15;
}

.article-site--en .listing-heading h2 {
  font-family: var(--font-serif-en);
}

.listing-heading > p {
  padding-bottom: 20px;
  margin: 0;
  color: var(--article-muted);
  font-size: 0.875rem;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.article-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--article-border);
  border-radius: 18px;
  background: rgba(253, 247, 236, 0.86);
  box-shadow: 0 8px 24px rgba(66, 45, 24, 0.045);
  transition: box-shadow 200ms ease, border-color 200ms ease, transform 200ms ease;
}

.article-card:hover {
  border-color: rgba(154, 74, 34, 0.3);
  box-shadow: 0 16px 36px rgba(66, 45, 24, 0.095);
  transform: translateY(-2px);
}

.article-card:focus-within {
  border-color: var(--article-accent-strong);
}

.article-card__link {
  display: flex;
  height: 100%;
  flex-direction: column;
  text-decoration: none;
}

.article-card__link:focus-visible {
  outline-offset: -4px;
}

.article-card__media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--article-surface-muted);
}

.article-card__media::after {
  position: absolute;
  inset: 0;
  border-bottom: 1px solid rgba(120, 86, 46, 0.11);
  background: linear-gradient(180deg, transparent 70%, rgba(53, 36, 22, 0.07));
  content: "";
  pointer-events: none;
}

.article-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 220ms ease;
}

.article-card:hover .article-card__media img {
  transform: scale(1.015);
}

.article-card__body {
  display: flex;
  min-height: 250px;
  flex: 1;
  flex-direction: column;
  padding: 24px;
}

.article-card h2 {
  display: -webkit-box;
  margin: 10px 0 12px;
  overflow: hidden;
  color: var(--article-ink);
  font-family: var(--font-serif-zh);
  font-size: 1.45rem;
  font-weight: 650;
  letter-spacing: -0.018em;
  line-height: 1.28;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.article-site--en .article-card h2 {
  font-family: var(--font-serif-en);
  font-size: 1.55rem;
}

.article-card__description {
  display: -webkit-box;
  margin: 0;
  overflow: hidden;
  color: var(--article-muted);
  font-size: 0.94rem;
  line-height: 1.72;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.article-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 22px;
  margin: auto 0 0;
  color: var(--article-muted);
  font-size: 0.8rem;
  font-weight: 650;
}

.article-card__meta span:last-child {
  color: var(--article-accent-strong);
  font-size: 1rem;
  transition: transform 180ms ease;
}

.article-card:hover .article-card__meta span:last-child {
  transform: translateX(3px);
}

.pagination {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  margin-top: 48px;
  gap: 24px;
}

.pagination a,
.pagination__direction,
.pagination__pages {
  min-height: 44px;
}

.pagination__direction {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--article-ink);
  font-size: 0.875rem;
  font-weight: 750;
  text-decoration: none;
}

.pagination__direction:last-child {
  justify-self: end;
}

.pagination__direction.is-disabled {
  color: rgba(111, 100, 86, 0.48);
}

.pagination__pages {
  display: flex;
  align-items: center;
  gap: 6px;
}

.pagination__pages a {
  display: grid;
  min-width: 44px;
  place-items: center;
  border-radius: 50%;
  color: var(--article-muted);
  font-size: 0.875rem;
  font-weight: 750;
  text-decoration: none;
}

.pagination__pages a:hover {
  background: rgba(253, 247, 236, 0.8);
  color: var(--article-ink);
}

.pagination__pages a[aria-current="page"] {
  background: var(--article-ink);
  color: #fffaf2;
}

.pagination__mobile-count {
  display: none;
}

.empty-state {
  display: grid;
  min-height: 420px;
  place-items: center;
  align-content: center;
  padding: 48px 24px;
  border: 1px dashed rgba(120, 86, 46, 0.24);
  border-radius: 24px;
  background: rgba(253, 247, 236, 0.46);
  text-align: center;
}

.empty-state img {
  margin-bottom: 20px;
  opacity: 0.74;
}

.empty-state h2 {
  margin: 0 0 10px;
  color: var(--article-ink);
  font-family: var(--font-serif-zh);
  font-size: 2rem;
}

.article-site--en .empty-state h2 {
  font-family: var(--font-serif-en);
}

.empty-state p {
  max-width: 480px;
  margin: 0 0 20px;
  color: var(--article-muted);
  line-height: 1.75;
}

.text-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--article-accent-strong);
  font-weight: 750;
  text-underline-offset: 4px;
}

/* 文章详情 */
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 800px) 248px;
  align-items: start;
  width: min(calc(100% - 64px), var(--content-detail));
  padding: 64px 0 88px;
  margin: 0 auto;
  gap: 48px;
}

.article-paper {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--article-border);
  border-radius: 24px;
  background: var(--article-surface);
  box-shadow: var(--article-shadow);
}

.article-header {
  padding: clamp(32px, 7vw, 72px) clamp(24px, 7vw, 72px) 0;
}

.article-topic {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding-right: 16px;
  text-decoration: none;
}

.article-topic:hover {
  text-decoration: underline;
  text-underline-offset: 5px;
}

.article-header h1 {
  margin: 12px 0 20px;
  color: var(--article-ink);
  font-family: var(--font-serif-zh);
  font-size: clamp(2.3rem, 6vw, 4.65rem);
  font-weight: 650;
  letter-spacing: -0.045em;
  line-height: 1.03;
  overflow-wrap: anywhere;
}

.article-dek {
  max-width: 66ch;
  margin: 0;
  color: var(--article-muted);
  font-size: clamp(1.04rem, 2vw, 1.2rem);
  line-height: 1.78;
}

.article-reading {
  margin: 16px 0 0;
  color: var(--article-muted);
  font-size: 0.82rem;
  font-weight: 650;
}

.article-hero {
  overflow: hidden;
  aspect-ratio: 16 / 9;
  margin: 36px 0 0;
  border-radius: 18px;
  background: var(--article-surface-muted);
}

.article-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-body {
  max-width: 72ch;
  padding: 48px clamp(24px, 7vw, 72px) 64px;
  color: var(--article-text);
  font-size: 1.0625rem;
  line-height: 1.95;
  overflow-wrap: break-word;
}

.article-site--en .article-body {
  max-width: 70ch;
  font-size: 1.125rem;
  line-height: 1.78;
}

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

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

.article-body h1,
.article-body h2,
.article-body h3,
.article-body h4 {
  color: var(--article-ink);
  font-family: var(--font-serif-zh);
  font-weight: 700;
  letter-spacing: -0.022em;
  line-height: 1.28;
  scroll-margin-top: calc(var(--header-height) + 24px);
}

.article-site--en .article-body h1,
.article-site--en .article-body h2,
.article-site--en .article-body h3,
.article-site--en .article-body h4 {
  font-family: var(--font-serif-en);
}

.article-body h2 {
  padding-top: 20px;
  margin: 52px 0 18px;
  border-top: 1px solid rgba(120, 86, 46, 0.12);
  font-size: clamp(1.75rem, 3.5vw, 2.3rem);
}

.article-body h3 {
  margin: 36px 0 12px;
  font-size: clamp(1.35rem, 2.5vw, 1.7rem);
}

.article-body p,
.article-body ul,
.article-body ol,
.article-body blockquote,
.article-body table,
.article-body pre,
.article-body figure {
  margin-top: 0;
  margin-bottom: 24px;
}

.article-body ul,
.article-body ol {
  padding-left: 1.55em;
}

.article-body li + li {
  margin-top: 8px;
}

.article-body a,
.sources a {
  color: var(--article-accent-strong);
  font-weight: 620;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.article-body a:hover,
.sources a:hover {
  text-decoration-thickness: 2px;
}

.article-body blockquote {
  padding: 4px 0 4px 24px;
  border-left: 3px solid var(--article-accent);
  color: var(--article-muted);
  font-family: var(--font-serif-zh);
  font-size: 1.08em;
}

.article-site--en .article-body blockquote {
  font-family: var(--font-serif-en);
}

.article-body :not(pre) > code {
  padding: 0.16em 0.38em;
  border: 1px solid rgba(120, 86, 46, 0.12);
  border-radius: 6px;
  background: var(--article-surface-muted);
  color: #7f3e1f;
  font-family: var(--font-mono);
  font-size: 0.86em;
}

.article-body pre {
  overflow: auto;
  max-width: 100%;
  padding: 22px;
  border-radius: 12px;
  background: var(--article-code-bg);
  color: var(--article-code-text);
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.68;
  tab-size: 2;
}

.article-body pre code {
  display: block;
  min-width: max-content;
  font: inherit;
}

.code-frame {
  overflow: hidden;
  margin: 0 0 24px;
  border: 1px solid rgba(42, 34, 24, 0.18);
  border-radius: 12px;
  background: var(--article-code-bg);
}

.code-frame pre {
  margin: 0;
  border-radius: 0;
}

.code-toolbar {
  display: flex;
  min-height: 48px;
  align-items: center;
  justify-content: space-between;
  padding: 0 8px 0 18px;
  border-bottom: 1px solid rgba(232, 222, 208, 0.12);
  color: #bfb3a4;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.copy-button {
  min-width: 76px;
  min-height: 40px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--article-code-text);
  cursor: pointer;
  font: 700 0.75rem var(--font-sans);
  transition: background 160ms ease;
}

.copy-button:hover {
  background: rgba(255, 255, 255, 0.09);
}

.article-body img,
.article-body video {
  width: auto;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--article-border);
  border-radius: 12px;
}

.article-body figure {
  margin-right: 0;
  margin-left: 0;
}

.article-body figcaption {
  margin-top: 8px;
  color: var(--article-muted);
  font-size: 0.82rem;
  line-height: 1.55;
  text-align: center;
}

.article-body table {
  display: block;
  width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  border-spacing: 0;
  font-size: 0.9rem;
  white-space: nowrap;
}

.article-body .table-scroll {
  width: 100%;
  overflow-x: auto;
  margin-bottom: 24px;
}

.article-body .table-scroll table {
  display: table;
  width: max-content;
  min-width: 100%;
  overflow: visible;
  margin-bottom: 0;
}

.article-body th,
.article-body td {
  padding: 12px 14px;
  border: 1px solid var(--article-border);
  text-align: left;
}

.article-body th {
  background: var(--article-surface-muted);
  color: var(--article-ink);
}

.sources {
  padding: 40px clamp(24px, 7vw, 72px) 56px;
  border-top: 1px solid var(--article-border);
  background: rgba(246, 238, 223, 0.52);
}

.sources ol {
  padding-left: 1.3em;
  margin: 0;
}

.sources li {
  padding-left: 6px;
  color: var(--article-muted);
  line-height: 1.75;
}

.sources li + li {
  margin-top: 10px;
}

.toc-desktop {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  max-height: calc(100vh - var(--header-height) - 48px);
  overflow: auto;
  overscroll-behavior: contain;
}

.toc {
  padding: 22px 20px;
  border: 1px solid var(--article-border);
  border-radius: 18px;
  background: rgba(253, 247, 236, 0.64);
}

.toc__title {
  padding-bottom: 14px;
  margin: 0 0 8px;
  border-bottom: 1px solid var(--article-border);
  color: var(--article-ink);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.toc ol {
  padding: 0;
  margin: 0;
  list-style: none;
}

.toc__item {
  border-left: 2px solid transparent;
}

.toc__item--level-3 {
  padding-left: 12px;
}

.toc a {
  display: block;
  padding: 8px 8px 8px 12px;
  border-radius: 0 8px 8px 0;
  color: var(--article-muted);
  font-size: 0.82rem;
  line-height: 1.45;
  text-decoration: none;
}

.toc a:hover {
  background: rgba(253, 247, 236, 0.78);
  color: var(--article-ink);
}

.toc a[aria-current="location"] {
  color: var(--article-accent-strong);
  font-weight: 750;
}

.toc__item:has(a[aria-current="location"]) {
  border-left-color: var(--article-accent-strong);
}

.toc-mobile {
  display: none;
}

.related-shell {
  padding-top: 8px;
}

.article-grid--related .article-card__body {
  min-height: 220px;
}

/* 错误与服务状态 */
.state-page {
  display: flex;
  width: min(calc(100% - 32px), 560px);
  min-height: calc(100vh - var(--header-height) - 144px);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  margin: 0 auto;
  text-align: center;
}

.state-page__mark {
  margin-bottom: 18px;
  color: rgba(154, 74, 34, 0.2);
  font: 700 clamp(4.5rem, 18vw, 8rem) / 0.8 var(--font-serif-en);
}

.state-page h1 {
  margin: 12px 0 16px;
  color: var(--article-ink);
  font-family: var(--font-serif-zh);
  font-size: clamp(2.1rem, 7vw, 3.7rem);
  letter-spacing: -0.035em;
  line-height: 1.05;
}

.state-page > p:not(.section-kicker) {
  max-width: 470px;
  margin: 0;
  color: var(--article-muted);
  line-height: 1.75;
}

.state-page__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px 24px;
  margin-top: 28px;
}

.button-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--article-ink);
  color: #fffaf2;
  font-weight: 750;
  text-decoration: none;
}

.site-footer {
  border-top: 1px solid var(--article-border);
  background: rgba(246, 238, 223, 0.5);
}

.site-footer__inner {
  display: flex;
  width: min(calc(100% - 64px), var(--content-wide));
  min-height: 112px;
  align-items: center;
  justify-content: space-between;
  margin: 0 auto;
  gap: 24px;
  color: var(--article-muted);
  font-size: 0.82rem;
}

.site-footer__inner p {
  margin: 0;
  color: var(--article-ink);
  font-family: var(--font-serif-en);
  font-size: 1rem;
  font-weight: 700;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 20px;
}

.site-footer a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  color: var(--article-muted);
  font-weight: 650;
  text-underline-offset: 4px;
}

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

@media (max-width: 1024px) {
  .article-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .article-layout {
    grid-template-columns: minmax(0, 1fr);
    width: min(calc(100% - 48px), 820px);
    gap: 0;
  }

  .toc-desktop {
    display: none;
  }

  .toc-mobile {
    display: block;
    margin: 24px 0 0;
    border: 1px solid var(--article-border);
    border-radius: 12px;
    background: var(--article-surface-muted);
  }

  .toc-mobile summary {
    display: flex;
    min-height: 48px;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    color: var(--article-ink);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 750;
    list-style: none;
  }

  .toc-mobile summary::-webkit-details-marker {
    display: none;
  }

  .toc-mobile summary::after {
    color: var(--article-accent-strong);
    content: "+";
    font-size: 1.2rem;
  }

  .toc-mobile[open] summary::after {
    content: "−";
  }

  .toc-mobile .toc {
    border: 0;
    border-top: 1px solid var(--article-border);
    border-radius: 0;
    background: transparent;
  }

  .toc-mobile .toc__title {
    display: none;
  }
}

@media (max-width: 720px) {
  :root {
    --header-height: 56px;
  }

  .site-header__inner {
    grid-template-columns: 1fr auto;
    width: calc(100% - 32px);
  }

  .brand {
    gap: 8px;
    font-size: 1.12rem;
  }

  .brand img {
    width: 28px;
    height: 28px;
  }

  .site-nav {
    display: none;
  }

  .language-link {
    padding: 0 2px 0 10px;
  }

  .listing-hero {
    width: calc(100% - 32px);
    padding: 64px 0 48px;
  }

  .listing-hero h1 {
    font-size: clamp(2.55rem, 14vw, 4.15rem);
  }

  .topic-list {
    justify-content: flex-start;
    flex-wrap: nowrap;
    padding: 4px;
    margin-right: -16px;
    margin-left: -4px;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .topic-list::-webkit-scrollbar {
    display: none;
  }

  .topic-list a {
    flex: none;
  }

  .listing-shell,
  .related-shell {
    width: calc(100% - 32px);
    padding-bottom: 64px;
  }

  .listing-heading {
    min-height: auto;
    align-items: start;
  }

  .listing-heading h2 {
    margin-bottom: 14px;
  }

  .listing-heading > p {
    display: none;
  }

  .article-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .article-card__body {
    min-height: 226px;
    padding: 20px;
  }

  .pagination {
    gap: 8px;
    margin-top: 36px;
  }

  .pagination__pages {
    display: none;
  }

  .pagination__mobile-count {
    display: block;
    color: var(--article-muted);
    font-size: 0.85rem;
    font-weight: 750;
  }

  .pagination__direction span {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
  }

  .pagination__direction {
    width: 44px;
    justify-content: center;
    font-size: 1.15rem;
  }

  .pagination__direction:last-child {
    justify-self: end;
  }

  .article-layout {
    width: 100%;
    padding: 0 0 56px;
  }

  .article-paper {
    border-width: 0 0 1px;
    border-radius: 0;
    box-shadow: none;
  }

  .article-header {
    padding: 48px 20px 0;
  }

  .article-header h1 {
    font-size: clamp(2.3rem, 12vw, 3.55rem);
  }

  .article-dek {
    line-height: 1.68;
  }

  .article-hero {
    margin-top: 28px;
    border-radius: 12px;
  }

  .article-body {
    padding: 40px 20px 52px;
    font-size: 1.025rem;
    line-height: 1.9;
  }

  .article-site--en .article-body {
    font-size: 1.0625rem;
  }

  .article-body h2 {
    margin-top: 44px;
  }

  .article-body pre {
    padding: 18px;
    font-size: 0.8rem;
  }

  .sources {
    padding: 36px 20px 48px;
  }

  .related-shell {
    padding-top: 0;
  }

  .site-footer__inner {
    width: calc(100% - 32px);
    min-height: 144px;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 8px;
  }

  .site-footer nav {
    justify-content: flex-start;
    gap: 4px 16px;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .article-card:hover,
  .topic-list a:hover,
  .article-card:hover .article-card__media img,
  .article-card:hover .article-card__meta span:last-child {
    transform: none;
  }
}

@media print {
  .site-header,
  .site-footer,
  .reading-progress,
  .toc-desktop,
  .toc-mobile,
  .related-shell,
  .copy-button {
    display: none !important;
  }

  body,
  .article-paper {
    background: #fff;
  }

  .article-layout {
    display: block;
    width: 100%;
    padding: 0;
  }

  .article-paper {
    border: 0;
    box-shadow: none;
  }
}