/*
 * DOTAFS NexT/Gemini adaptation.
 * Layout tokens and structural conventions are adapted from
 * https://github.com/next-theme/hexo-theme-next (AGPL-3.0 with additional terms).
 */

.next-site {
  --next-body: #1b1d1f;
  --next-content: #1b1d1f;
  --next-card: rgb(227 225 220 / 4%);
  --next-menu: #1b1d1f;
  --next-text: #e3e1dc;
  --next-heading: #e3e1dc;
  --next-muted: rgb(227 225 220 / 56%);
  --next-line: rgb(227 225 220 / 10%);
  --next-line-strong: rgb(227 225 220 / 20%);
  --next-accent: #899599;
  --next-brand: #1b1d1f;
  --next-brand-text: #e3e1dc;
  --next-sidebar-width: 240px;
  --next-offset: 12px;
  --next-content-padding: 40px;
  min-height: 100vh;
  margin: 0;
  color: var(--next-text);
  background: var(--next-body);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  font-size: 16px;
  line-height: 2;
  text-rendering: optimizeLegibility;
}

:root[data-theme="dark"] .next-site { color-scheme: dark; }

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

.next-site a {
  color: inherit;
  text-decoration: none;
}

.next-site a,
.next-site button,
.next-site input {
  touch-action: manipulation;
}

.next-site h1,
.next-site h2,
.next-site h3 {
  text-wrap: balance;
}

.next-site [id] {
  scroll-margin-top: 24px;
}

.next-post-meta,
.next-site-state,
.compact-metrics,
.prediction-label {
  font-variant-numeric: tabular-nums;
}

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

.next-site ::selection {
  color: #eee;
  background: #262a30;
}

.next-site .research-skip-link,
.next-site .skip-link {
  position: fixed;
  z-index: 1000;
  top: -60px;
  left: 16px;
  padding: 7px 14px;
  color: #fff;
  background: #222;
  transition: top .2s ease;
}

.next-site .research-skip-link:focus,
.next-site .skip-link:focus {
  top: 10px;
}

.next-headband {
  width: 100%;
  height: 3px;
  background: #222;
}

/* Header: NexT Pisces/Gemini dual-column geometry. */
.next-header {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto 12px;
  background: var(--next-menu);
}

.next-header-inner {
  display: grid;
  grid-template-columns: var(--next-sidebar-width) minmax(0, 1fr);
  min-height: 112px;
}

.next-brand-column {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 20px 12px;
  color: var(--next-brand-text);
  text-align: center;
  background: var(--next-brand);
}

.next-brand {
  padding: 1px 12px;
  color: #fff !important;
  font-size: 22px;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: .08em;
  -webkit-text-fill-color: #fff;
}

.next-brand-column p {
  margin: 7px 0 0;
  color: #aaa;
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: .02em;
}

.next-menu {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  padding: 20px 24px;
}

.next-menu a,
.next-menu button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  margin: 0;
  padding: 5px 12px;
  color: var(--next-text);
  background: transparent;
  border: 0;
  border-radius: 0;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: color .2s ease, background-color .2s ease;
}

.next-menu a:hover,
.next-menu a.is-active,
.next-menu button:hover {
  color: var(--next-heading);
  background: var(--next-body);
}

.next-menu a.is-active::after {
  position: absolute;
  right: 5px;
  width: 6px;
  height: 6px;
  background: #bbb;
  border-radius: 50%;
  content: "";
}

.next-page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--next-sidebar-width);
  grid-template-areas: "content sidebar";
  align-items: start;
  gap: var(--next-offset);
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.next-main {
  grid-area: content;
  min-width: 0;
}

.next-sidebar {
  grid-area: sidebar;
  align-self: start;
  color: var(--next-text);
  background: var(--next-content);
}

.next-sidebar-inner,
.next-sidebar-profile {
  padding: 18px;
  text-align: center;
}

.next-sidebar-inner {
  position: sticky;
  top: 12px;
}

.next-avatar {
  display: grid;
  place-items: center;
  width: 96px;
  height: 96px;
  margin: 0 auto 12px;
  color: #eee;
  background: #333;
  border: 1px solid var(--next-line-strong);
  border-radius: 50%;
  font-family: Georgia, serif;
  font-size: 38px;
  line-height: 1;
}

.next-sidebar h2,
.next-sidebar-profile strong {
  display: block;
  margin: 0;
  color: var(--next-heading);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.8;
}

.next-sidebar-profile > a {
  display: inline-block;
  margin-top: 3px;
  color: var(--next-muted);
  border-bottom: 1px dotted var(--next-line-strong);
  font-size: 12px;
}

.next-profile-links {
  margin: 20px -5px 0;
  text-align: left;
}

.next-profile-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 44px;
  padding: 4px 8px;
  border-top: 1px dotted var(--next-line-strong);
  font-size: 13px;
}

.next-profile-links a:last-child {
  border-bottom: 1px dotted var(--next-line-strong);
}

.next-profile-links a:hover {
  color: var(--next-accent);
  background: var(--next-body);
}

.next-site-state {
  display: flex;
  justify-content: center;
  margin: 22px 0 0;
}

.next-site-state div {
  display: flex;
  flex-direction: column;
  min-width: 66px;
  padding: 0 14px;
  border-right: 1px solid var(--next-line);
  text-align: center;
}

.next-site-state div:last-child {
  border-right: 0;
}

.next-site-state dt {
  order: 2;
  color: var(--next-muted);
  font-size: 12px;
}

.next-site-state dd {
  order: 1;
  margin: 0;
  color: var(--next-heading);
  font-size: 16px;
}

/* Home index: the post list is the page, with no marketing hero. */
.next-home .next-main {
  display: grid;
  gap: var(--next-offset);
}

.next-post {
  padding: 40px;
  color: var(--next-text);
  background: var(--next-content);
}

.next-post-header {
  text-align: center;
}

.next-post-header h1 {
  max-width: 760px;
  margin: 0 auto;
  color: var(--next-heading);
  font-size: 25px;
  font-weight: 400;
  line-height: 1.45;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.next-post-header h1 a {
  position: relative;
  display: inline;
  background-image: linear-gradient(var(--next-heading), var(--next-heading));
  background-position: 0 100%;
  background-repeat: no-repeat;
  background-size: 0 1px;
  transition: background-size .25s ease;
}

.next-post-header h1 a:hover {
  background-size: 100% 1px;
}

.next-post-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0;
  margin-top: 7px;
  color: var(--next-muted);
  font-size: 12px;
  line-height: 1.8;
}

.next-post-meta > * + *::before {
  margin: 0 7px;
  content: "|";
}

.next-post-body {
  margin-top: 34px;
  color: var(--next-text);
  font-size: 16px;
  line-height: 2;
  overflow-wrap: anywhere;
}

.next-post-body p {
  margin: 0;
}

.next-post-footer {
  margin-top: 26px;
  text-align: center;
}

.next-post-footer a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 18px;
  color: var(--next-text);
  border: 2px solid var(--next-text);
  font-size: 13px;
  transition: color .2s ease, background-color .2s ease;
}

.next-post-footer a:hover {
  color: #fff;
  background: #222;
}

.next-footer {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
  padding: 30px calc(var(--next-sidebar-width) + var(--next-offset)) 30px 0;
  color: var(--next-muted);
  text-align: center;
  font-size: 12px;
  line-height: 1.8;
}

.next-footer p {
  margin: 0;
}

.next-footer a {
  color: var(--next-text);
  border-bottom: 1px solid var(--next-line-strong);
}

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

/* Shared article typography and surfaces. */
.next-article {
  overflow-x: hidden;
}

.next-article::before,
.next-article::after,
.next-article .page-ambient {
  display: none !important;
  content: none !important;
}

.next-article .read-progress {
  z-index: 90;
  height: 3px;
  background: transparent;
}

.next-article .read-progress i {
  background: var(--next-accent) !important;
}

.next-article .next-main {
  color: var(--next-text);
  background: var(--next-content);
}

.next-article .next-main p,
.next-article .next-main li,
.next-article .next-main dd,
.next-article .next-main td {
  line-height: 1.9;
}

.next-article .next-main h1,
.next-article .next-main h2,
.next-article .next-main h3,
.next-article .next-main h4 {
  color: var(--next-heading);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-style: normal;
  letter-spacing: 0;
}

.next-article .next-main h1 {
  font-size: clamp(28px, 3.4vw, 34px) !important;
  font-weight: 400 !important;
  line-height: 1.45 !important;
}

.next-article .next-main h2 {
  padding-bottom: 8px;
  border-bottom: 1px solid var(--next-line);
  font-size: clamp(22px, 2.6vw, 27px) !important;
  font-weight: 500 !important;
  line-height: 1.5 !important;
}

.next-article .next-main h3 {
  font-size: clamp(18px, 2vw, 21px) !important;
  font-weight: 500 !important;
  line-height: 1.55 !important;
}

.next-article .next-main h4 {
  font-size: 17px !important;
  font-weight: 500 !important;
}

.next-article .next-main em,
.next-article .next-main a:not(.button) {
  color: var(--next-accent);
}

.next-article .eyebrow,
.next-article .section-label,
.next-article [class*="kicker"] {
  color: var(--next-muted) !important;
  font-family: Consolas, "IBM Plex Mono", monospace !important;
  font-size: 11px !important;
  letter-spacing: .04em !important;
}

.next-article .button,
.next-article button:not(.paper-image-button),
.next-article [class*="-button"],
.next-article [class*="-tab"] {
  border-radius: 0 !important;
}

.next-article .button {
  min-height: 42px;
  color: var(--next-text) !important;
  background: var(--next-content) !important;
  border: 1px solid var(--next-text) !important;
  box-shadow: none !important;
}

.next-article .button:hover,
.next-article .button.primary {
  color: #fff !important;
  background: #222 !important;
  border-color: #222 !important;
}

.next-article :where(
  .paper-proof,
  .compare-card,
  .placement-lab,
  .lab-readout > *,
  .pipeline-display,
  .score-card,
  .honesty-box,
  .code-panel,
  .final-takeaway,
  .method-map,
  .compare-lab,
  .method-notes,
  .prompt-console,
  .pipeline-workbench,
  .terrain-lab,
  .object-lab,
  .evidence-card,
  .scope-grid > *,
  .references,
  .fact-strip,
  .key-answer,
  .comparison-table-wrap
) {
  border-radius: 0 !important;
  box-shadow: none !important;
}

.next-article :where(
  .paper-proof,
  .compare-card,
  .score-card,
  .honesty-box,
  .final-takeaway,
  .method-map,
  .method-notes,
  .references,
  .key-answer
) {
  color: var(--next-text) !important;
  background: var(--next-card) !important;
  border-color: var(--next-line) !important;
}

.next-article .reveal {
  opacity: 1 !important;
  transform: none !important;
}

/* WorldClaw maps its existing table of contents to the Gemini sidebar. */
.next-site.worldclaw-page .page-shell.next-page-layout {
  display: grid !important;
  grid-template-columns: minmax(0, 1fr) var(--next-sidebar-width) !important;
  grid-template-areas: "content sidebar" !important;
  gap: var(--next-offset) !important;
  width: min(1160px, calc(100% - 40px)) !important;
  margin: 0 auto !important;
}

.next-site.worldclaw-page .toc.next-sidebar {
  position: sticky !important;
  top: 12px !important;
  display: block !important;
  max-height: calc(100vh - 24px);
  padding: 0 18px 18px !important;
  overflow-y: auto;
  border: 0 !important;
  border-radius: 0 !important;
  box-shadow: none !important;
}

.next-site.worldclaw-page .next-brand,
.next-site.worldclaw-page .next-avatar {
  color: #fff !important;
  -webkit-text-fill-color: #fff !important;
}

.next-site.worldclaw-page .toc > p,
.next-site.nala-page .next-article-toc > p {
  margin: 0 0 8px;
  padding-top: 14px;
  color: var(--next-heading);
  border-top: 1px solid var(--next-line);
  font-size: 13px;
  font-weight: 600;
}

.next-site.worldclaw-page .toc nav,
.next-site.nala-page .next-article-toc nav {
  display: block;
}

.next-site.worldclaw-page .toc nav a,
.next-site.nala-page .next-article-toc nav a {
  display: block;
  min-height: 34px;
  padding: 3px 8px 3px 12px;
  color: var(--next-text);
  border-left: 2px solid var(--next-line);
  font-size: 12px;
  line-height: 2.3;
}

.next-site.worldclaw-page .toc nav a:hover,
.next-site.worldclaw-page .toc nav a.is-current,
.next-site.nala-page .next-article-toc nav a:hover {
  color: var(--next-accent);
  border-left-color: var(--next-accent);
}

.next-site.worldclaw-page .toc-note {
  margin-top: 18px;
  padding-top: 12px;
  border-top: 1px dotted var(--next-line-strong);
}

.next-site.worldclaw-page .next-main {
  grid-area: content;
  padding: 40px;
}

.next-site.worldclaw-page .next-main > section {
  width: 100% !important;
  margin: 0 !important;
  padding: 44px 0 !important;
  color: var(--next-text) !important;
  background: transparent !important;
  border: 0 !important;
  border-top: 1px solid var(--next-line) !important;
}

.next-site.worldclaw-page .next-main > section:first-child {
  padding-top: 0 !important;
  border-top: 0 !important;
}

.next-site.worldclaw-page .paper-intro {
  gap: 32px !important;
}

.next-site.worldclaw-page .paper-intro h1 {
  margin: 4px 0 !important;
}

.next-site.worldclaw-page .paper-subtitle {
  color: var(--next-heading) !important;
  font-size: 17px !important;
  line-height: 1.6 !important;
}

.next-site.worldclaw-page .lesson-header {
  gap: 16px !important;
  margin-bottom: 26px !important;
}

.next-site.worldclaw-page .lesson-header > p {
  color: var(--next-muted) !important;
}

.next-site.worldclaw-page .system-tab.is-active,
.next-site.worldclaw-page .stage-button.is-active,
.next-site.worldclaw-page .preset.is-active,
.next-site.worldclaw-page .object-tab.is-active {
  color: var(--next-heading) !important;
  background: var(--next-card) !important;
  border-color: var(--next-heading) !important;
  box-shadow: inset 3px 0 var(--next-accent) !important;
}

.next-site.worldclaw-page table {
  border-color: var(--next-line) !important;
}

.next-site.worldclaw-page th,
.next-site.worldclaw-page td {
  color: var(--next-text) !important;
  background: transparent !important;
  border-color: var(--next-line) !important;
}

/* NaLA uses the same shell while keeping the interactive canvases intact. */
.next-site.nala-page .next-page-layout {
  align-items: start;
}

.next-site.nala-page .next-article-toc {
  position: sticky;
  top: 12px;
  max-height: calc(100vh - 24px);
  padding: 0 18px 18px;
  overflow-y: auto;
}

.next-site.nala-page .next-main > section {
  width: 100% !important;
  max-width: none !important;
  margin: 0 !important;
  padding: 44px 40px !important;
  color: var(--next-text) !important;
  background: var(--next-content) !important;
  border: 0 !important;
  border-top: 1px solid var(--next-line) !important;
}

.next-site.nala-page .next-main > section:first-child {
  border-top: 0 !important;
}

.next-site.nala-page .next-main > section > .section-shell {
  width: 100% !important;
  max-width: none !important;
  margin: 0 !important;
}

.next-site.nala-page .hero {
  display: block !important;
  min-height: 0 !important;
  padding-top: 50px !important;
}

.next-site.nala-page .hero-copy {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.next-site.nala-page .hero h1 {
  margin: 10px 0 20px !important;
  font-size: clamp(27px, 3.2vw, 32px) !important;
}

.next-site.nala-page .hero h1 em {
  color: var(--next-heading) !important;
}

.next-site.nala-page .hero-lede {
  max-width: 720px !important;
  margin-inline: auto;
  color: var(--next-text) !important;
  font-size: 15px !important;
}

.next-site.nala-page .hero-actions {
  justify-content: center;
}

.next-site.nala-page .paper-facts {
  max-width: 720px;
  margin-inline: auto;
  border-color: var(--next-line) !important;
}

.next-site.nala-page .hero-demo {
  max-width: 720px;
  margin: 36px auto 0;
  border-radius: 0 !important;
  box-shadow: none !important;
}

.next-site.nala-page .summary-strip {
  width: 100% !important;
  padding: 0 40px !important;
  background: var(--next-content) !important;
}

.next-site.nala-page .section-heading,
.next-site.nala-page .section-heading.light {
  max-width: 760px !important;
  margin-bottom: 30px !important;
  color: var(--next-text) !important;
}

.next-site.nala-page .section-heading > p:last-child,
.next-site.nala-page .section-heading.light > p:last-child {
  color: var(--next-muted) !important;
  font-size: 14px !important;
}

.next-site.nala-page .paper-figure-tabs button.is-active,
.next-site.nala-page .pipeline-tabs button.is-active,
.next-site.nala-page .stack-list button.is-active,
.next-site.nala-page .scenario-picker button.is-active,
.next-site.nala-page .method-switch button.is-active,
.next-site.nala-page .view-switch button.is-active {
  color: var(--next-heading) !important;
  background: var(--next-card) !important;
  border-color: var(--next-heading) !important;
  box-shadow: inset 0 3px var(--next-accent) !important;
}

.next-site.nala-page .compare-card.new-way,
.next-site.nala-page .plain-language {
  color: var(--next-text) !important;
  background: var(--next-card) !important;
  border-color: var(--next-line-strong) !important;
  box-shadow: inset 3px 0 var(--next-accent) !important;
}

.next-site.nala-page .score-card strong,
.next-site.nala-page .paper-figure-guide > span,
.next-site.nala-page .paper-figure-guide a {
  color: var(--next-accent) !important;
}

.next-site.nala-page .site-footer {
  display: none !important;
}

@media (max-width: 980px) {
  .next-header,
  .next-page-layout,
  .next-footer,
  .next-site.worldclaw-page .page-shell.next-page-layout {
    width: min(100% - 24px, 900px) !important;
  }

  .next-page-layout,
  .next-site.worldclaw-page .page-shell.next-page-layout {
    grid-template-columns: minmax(0, 1fr) !important;
    grid-template-areas: "content" "sidebar" !important;
  }

  .next-sidebar,
  .next-site.worldclaw-page .toc.next-sidebar,
  .next-site.nala-page .next-article-toc {
    position: static !important;
    max-height: none;
  }

  .next-article .next-sidebar {
    display: none !important;
  }

  .next-footer {
    padding-right: 0;
  }
}

@media (max-width: 720px) {
  .next-site {
    font-size: 15px;
  }

  .next-header {
    width: 100% !important;
    margin-bottom: 8px;
  }

  .next-header-inner {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .next-brand-column {
    min-height: 86px;
  }

  .next-menu {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 0;
    padding: 8px 4px;
  }

  .next-article .next-menu {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .next-menu a,
  .next-menu button {
    min-width: 0;
    padding-inline: 3px;
    overflow: hidden;
    font-size: 12px;
    white-space: nowrap;
  }

  .next-page-layout,
  .next-footer,
  .next-site.worldclaw-page .page-shell.next-page-layout {
    width: 100% !important;
  }

  .next-post,
  .next-site.worldclaw-page .next-main,
  .next-site.nala-page .next-main > section {
    padding: 28px 20px !important;
  }

  .next-post-header h1 {
    font-size: 21px;
  }

  .next-post-meta {
    display: block;
  }

  .next-post-meta > * {
    display: block;
  }

  .next-post-meta > * + *::before {
    content: none;
  }

  .next-site.worldclaw-page .next-main > section {
    padding: 34px 0 !important;
  }

  .next-site.nala-page .summary-strip {
    padding-inline: 20px !important;
  }

  .next-article .next-main h1 {
    font-size: 25px !important;
  }

  .next-article .next-main h2 {
    font-size: 23px !important;
  }

  .next-footer {
    padding: 24px 18px;
  }

  .next-site.worldclaw-page .toc.next-sidebar {
    display: none !important;
  }
}

/* Interactive learning note: keep the experiment intact, place it inside the
   same restrained NexT reading system used by the journal. */
.next-learning {
  --bg: var(--next-body);
  --surface: var(--next-content);
  --surface-2: var(--next-card);
  --line: var(--next-line-strong);
  --text: var(--next-text);
  --muted: var(--next-muted);
  --cyan: #477fb3;
  --cyan-soft: rgb(71 127 179 / 10%);
  --orange: #d1775b;
  --orange-soft: rgb(209 119 91 / 10%);
  --yellow: var(--next-accent);
  background: var(--next-body);
  color-scheme: light;
  color: var(--next-text);
}

.next-learning .research-skip-link {
  background: var(--next-accent);
  border-radius: 0;
  color: #fff;
  left: 16px;
  top: -80px;
  z-index: 1000;
}

.next-learning .research-skip-link:focus {
  top: 10px;
}

.next-learning-main {
  background: var(--next-content);
  box-shadow: 0 2px 6px rgb(0 0 0 / 8%);
  box-sizing: border-box;
  margin: var(--next-offset) auto 0;
  max-width: 1160px;
  padding: 52px 42px 68px;
  width: calc(100% - 40px);
}

.next-learning-intro {
  border-bottom: 1px solid var(--next-line);
  margin: 0 0 34px;
  padding: 0 8% 34px;
  text-align: center;
}

.next-learning-intro > p {
  color: var(--next-muted);
  font-size: 15px;
  line-height: 2;
  margin: 24px auto 0;
  max-width: 720px;
}

.next-learning-flow {
  align-items: center;
  display: flex;
  justify-content: center;
  margin-top: 24px;
}

.next-learning-flow span {
  border-bottom: 1px solid var(--next-line);
  border-top: 1px solid var(--next-line);
  color: var(--next-muted);
  font-size: 13px;
  padding: 9px 16px;
}

.next-learning-flow b {
  color: var(--next-text);
  font-weight: 500;
  margin-right: 8px;
}

.next-learning-flow i {
  color: var(--next-muted);
  font-style: normal;
  padding: 0 8px;
}

.next-learning .lesson-nav,
.next-learning .panel,
.next-learning .bridge-grid article,
.next-learning .takeaway {
  border-radius: 0;
}

.next-learning .lesson-nav {
  background: transparent;
  border: 1px solid var(--next-line);
  box-shadow: none;
  margin: 0 0 24px;
  padding: 0;
}

.next-learning .lesson-step {
  background: var(--next-content);
  border: 0;
  border-right: 1px solid var(--next-line);
  color: var(--next-muted);
}

.next-learning .lesson-step:last-child {
  border-right: 0;
}

.next-learning .lesson-step:hover,
.next-learning .lesson-step.is-active {
  background: #fafafa;
  color: var(--next-text);
}

.next-learning .lesson-step.is-active {
  box-shadow: inset 0 -2px var(--next-accent);
}

.next-learning .lesson-step small,
.next-learning .eyebrow,
.next-learning .stage-kicker {
  color: var(--next-accent);
}

.next-learning .panel {
  background: var(--next-content);
  border: 1px solid var(--next-line);
  box-shadow: none;
}

.next-learning .panel-heading,
.next-learning .control-header {
  border-color: var(--next-line);
}

.next-learning .panel h2,
.next-learning .bridge-heading h2 {
  color: var(--next-heading);
  font-family: "Noto Serif SC", Georgia, serif;
  font-weight: 600;
}

.next-learning .training-actions .primary {
  background: var(--next-heading);
  border-color: var(--next-heading);
  color: #fff;
}

.next-learning .training-actions button,
.next-learning .sample,
.next-learning input[type="range"] {
  border-radius: 0;
}

.next-learning .training-actions button:focus-visible,
.next-learning .sample:focus-visible,
.next-learning .lesson-step:focus-visible {
  outline: 2px solid var(--next-accent);
  outline-offset: 2px;
}

.next-learning .bridge-section {
  background: var(--next-card);
  border: 1px solid var(--next-line);
  border-top: 1px solid var(--next-line);
  margin-top: 52px;
  padding-top: 44px;
}

.next-learning .takeaway {
  border-left: 3px solid var(--next-accent);
}

.next-learning .neuron-core {
  fill: #fff;
  stroke: #aaa;
}

.next-learning .neuron-value {
  fill: var(--next-heading);
}

.next-learning .network-stage,
.next-learning .prediction-track {
  background: var(--next-content);
}

@media (max-width: 900px) {
  .next-learning-main {
    padding: 38px 24px 54px;
    width: calc(100% - 24px);
  }

  .next-learning-intro {
    padding-left: 0;
    padding-right: 0;
  }
}

@media (max-width: 720px) {
  .next-learning .next-menu {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .next-learning-main {
    box-shadow: none;
    margin-top: 12px;
    padding: 30px 14px 44px;
    width: 100%;
  }

  .next-learning-intro .next-post-title {
    font-size: 25px;
  }

  .next-learning-flow {
    align-items: stretch;
    flex-direction: column;
  }

  .next-learning-flow span {
    text-align: left;
  }

  .next-learning-flow i {
    padding: 2px 0;
    transform: rotate(90deg);
  }

  .next-learning .lesson-step {
    border-bottom: 1px solid var(--next-line);
    border-right: 0;
  }

  .next-learning .lesson-step:last-child {
    border-bottom: 0;
  }
}

/* Quiet dark reading system.
   Three base colors only: ink, warm white and a desaturated blue-grey.
   Surface, border and secondary-text values are alpha variations of warm white. */
.next-site {
  color-scheme: dark;
}

.next-site,
.next-site button,
.next-site input,
.next-site select,
.next-site textarea {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif !important;
}

.next-site :where(
  h1,
  h2,
  h3,
  h4,
  h5,
  h6,
  blockquote
) {
  color: var(--next-heading) !important;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif !important;
}

.next-site :where(
  code,
  pre,
  kbd,
  samp,
  .eyebrow,
  .section-label,
  [class*="kicker"],
  [class*="metric"],
  [class*="readout"]
) {
  font-family: "IBM Plex Mono", Consolas, monospace !important;
}

.next-site :where(p, li, dd, td, label, figcaption, small) {
  color: inherit;
}

.next-headband {
  height: 1px;
  background: var(--next-accent);
}

.next-header,
.next-brand-column,
.next-sidebar,
.next-post,
.next-article .next-main,
.next-learning-main {
  background: var(--next-content) !important;
  box-shadow: none !important;
}

.next-brand,
.next-site.worldclaw-page .next-brand,
.next-site.worldclaw-page .next-avatar {
  color: var(--next-heading) !important;
  -webkit-text-fill-color: var(--next-heading) !important;
}

.next-brand-column p,
.next-post-meta,
.next-footer,
.next-site .canvas-help {
  color: var(--next-muted) !important;
}

.next-avatar {
  color: var(--next-heading);
  background: transparent;
  border-color: var(--next-line-strong);
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 32px;
}

.next-menu a:hover,
.next-menu a.is-active,
.next-menu button:hover,
.next-profile-links a:hover {
  color: var(--next-heading);
  background: var(--next-card);
}

.next-menu a.is-active::after {
  background: var(--next-accent);
}

.next-post-header h1 a {
  background-image: linear-gradient(var(--next-accent), var(--next-accent));
}

.next-post-footer a,
.next-article .button {
  color: var(--next-heading) !important;
  background: transparent !important;
  border: 1px solid var(--next-line-strong) !important;
}

.next-post-footer a:hover,
.next-article .button:hover,
.next-article .button.primary {
  color: var(--next-body) !important;
  background: var(--next-accent) !important;
  border-color: var(--next-accent) !important;
}

.next-site ::selection {
  color: var(--next-body);
  background: var(--next-accent);
}

.next-site .research-skip-link,
.next-site .skip-link {
  color: var(--next-body);
  background: var(--next-accent);
}

.next-site.worldclaw-page {
  --paper: #1b1d1f;
  --white: #1b1d1f;
  --ink: #e3e1dc;
  --ink-soft: rgb(227 225 220 / 78%);
  --muted: rgb(227 225 220 / 56%);
  --line: rgb(227 225 220 / 10%);
  --line-strong: rgb(227 225 220 / 20%);
  --blue: #899599;
  --blue-deep: #899599;
  --blue-pale: rgb(227 225 220 / 4%);
  --cyan: #899599;
  --cyan-pale: rgb(227 225 220 / 4%);
  --amber: #899599;
  --amber-pale: rgb(227 225 220 / 4%);
  --red: #899599;
  --red-pale: rgb(227 225 220 / 4%);
  --stage: #1b1d1f;
  --stage-soft: rgb(227 225 220 / 4%);
  --serif: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "IBM Plex Mono", Consolas, monospace;
}

.next-site.nala-page {
  --ink: #1b1d1f;
  --ink-2: #1b1d1f;
  --paper: #e3e1dc;
  --paper-2: rgb(227 225 220 / 4%);
  --acid: #899599;
  --mint: #899599;
  --orange: #899599;
  --line-dark: rgb(227 225 220 / 10%);
  --line-light: rgb(227 225 220 / 10%);
  --muted-dark: rgb(227 225 220 / 56%);
  --muted-light: rgb(227 225 220 / 56%);
  --shadow: none;
}

.next-learning {
  --bg: #1b1d1f;
  --surface: #1b1d1f;
  --surface-2: rgb(227 225 220 / 4%);
  --line: rgb(227 225 220 / 10%);
  --text: #e3e1dc;
  --muted: rgb(227 225 220 / 56%);
  --cyan: #899599;
  --cyan-soft: rgb(227 225 220 / 4%);
  --orange: #899599;
  --orange-soft: rgb(227 225 220 / 4%);
  --yellow: #899599;
}

.next-article :where(
  .paper-proof,
  .compare-card,
  .score-card,
  .honesty-box,
  .final-takeaway,
  .method-map,
  .method-notes,
  .references,
  .key-answer,
  .plain-language,
  .fact-strip,
  .summary-strip,
  .bridge-section,
  .panel
),
.next-learning :where(.panel, .bridge-section, .lesson-nav, .takeaway) {
  color: var(--next-text) !important;
  background: var(--next-card) !important;
  border-color: var(--next-line) !important;
  box-shadow: none !important;
}

.next-article :where(button, [role="tab"]),
.next-learning :where(button, input) {
  color: var(--next-text);
  border-color: var(--next-line-strong);
  box-shadow: none;
}

.next-article :where(
  button.is-active,
  [aria-pressed="true"],
  [aria-selected="true"]
),
.next-learning :where(button.is-active, [aria-pressed="true"]) {
  color: var(--next-heading) !important;
  background: var(--next-card) !important;
  border-color: var(--next-accent) !important;
  box-shadow: inset 2px 0 var(--next-accent) !important;
}

.next-article :where(a, button):hover,
.next-learning :where(a, button):hover {
  border-color: var(--next-accent);
}

.next-article .next-main :where(b, strong) {
  color: inherit !important;
}

.next-article .next-main :where(
  div,
  article,
  aside,
  header,
  footer,
  nav,
  section,
  figure,
  figcaption,
  table,
  thead,
  tbody,
  tr,
  th,
  td,
  dl,
  dt,
  dd,
  ol,
  ul,
  li,
  pre
) {
  border-color: var(--next-line) !important;
}

/* WorldClaw: flatten the former multicolour application chrome. Canvas imagery
   remains functional, while every surrounding control uses the three site tones. */
.next-site.worldclaw-page .next-main :where(
  p,
  span,
  small,
  b,
  strong,
  li,
  dt,
  dd,
  label,
  figcaption
) {
  color: inherit !important;
}

.next-site.worldclaw-page .next-main :where(
  .method-row,
  .method-split > div,
  .example-prompt,
  .system-flow,
  .system-flow article,
  .system-tab,
  .preset,
  .formula,
  .data-flow,
  .comparison-table thead th,
  .comparison-table tbody td:last-child,
  .method-notes .highlight,
  .summary-limit,
  .evidence-note,
  .scope-grid article > span
) {
  color: var(--next-text) !important;
  background: var(--next-card) !important;
  border-color: var(--next-line) !important;
}

.next-site.worldclaw-page .next-main :where(
  .pipeline-workbench,
  .world-viewport,
  .inspection-panel,
  .code-card,
  .heightfield-figure,
  .object-figure
) {
  color: var(--next-text) !important;
  background: var(--next-body) !important;
  background-image: none !important;
}

.next-site.worldclaw-page .next-main :where(
  .stage-button,
  .viewport-bar,
  .region-legend,
  .stage-analogy,
  .code-card > div
) {
  color: var(--next-muted) !important;
  background: var(--next-card) !important;
  border-color: var(--next-line) !important;
}

.next-site.worldclaw-page .next-main :where(
  .stage-button.is-active,
  #next-stage,
  .play-button
) {
  color: var(--next-body) !important;
  background: var(--next-accent) !important;
  border-color: var(--next-accent) !important;
}

.next-site.worldclaw-page .next-main :where(
  .live-dot,
  .progress-track i,
  .region-legend i
) {
  background: var(--next-accent) !important;
  box-shadow: none !important;
}

.next-site.worldclaw-page .next-main :where(
  .inspection-step,
  .code-card pre .key,
  .code-card pre .value,
  .stage-analogy span,
  .formula span,
  .formula b,
  .formula em,
  .evidence-grid article > p,
  .scope-grid article > span,
  .project-notes li span
) {
  color: var(--next-accent) !important;
}

.next-site.worldclaw-page .next-main :where(
  .viewport-status,
  .inspection-panel > p,
  .code-card pre,
  .stage-analogy,
  .heightfield-figure p,
  .method-row span,
  .method-split span,
  .fact-strip span
) {
  color: var(--next-muted) !important;
}

.next-site.worldclaw-page .next-main input[type="range"] {
  accent-color: var(--next-accent);
  color-scheme: dark;
}

/* NaLA: keep the 3D and paper figures readable but remove the former violet,
   cyan, orange and blue interface palette around them. */
.next-site.nala-page .next-main :where(
  p,
  span,
  small,
  b,
  strong,
  li,
  dt,
  dd,
  label,
  figcaption,
  article
) {
  color: inherit !important;
}

.next-site.nala-page .next-main :where(
  .hero-demo,
  .three-demo-app,
  .three-demo-panel,
  .paper-figure-explorer,
  .placement-lab,
  .lab-board-wrap,
  .pipeline-display,
  .pipeline-plain-result,
  .story-asset-tray,
  .story-code-output,
  .transform-card,
  .transform-inspector,
  .plain-language,
  .step-card,
  .score-card,
  .code-panel
) {
  color: var(--next-text) !important;
  background: var(--next-card) !important;
  border-color: var(--next-line) !important;
  box-shadow: none !important;
}

.next-site.nala-page .next-main :where(
  .demo-toolbar,
  .demo-caption,
  .three-demo-toolbar,
  .canvas-corner-label,
  .scene-verdict,
  .paper-figure-tabs,
  .pipeline-tabs,
  .stack-list button,
  .method-switch button,
  .scenario-picker button,
  .view-switch button
) {
  color: var(--next-muted) !important;
  background: var(--next-body) !important;
  border-color: var(--next-line) !important;
}

.next-site.nala-page .next-main :where(
  em,
  .eyebrow,
  .paper-figure-tabs small,
  .three-demo-toolbar small,
  #three-ref,
  #selected-transform,
  [id$="-value"]
) {
  color: var(--next-accent) !important;
}

.next-site.nala-page .next-main :where(
  .room-visual,
  .three-canvas-wrap,
  .lab-board,
  .pipeline-visual,
  .story-room
) {
  color: var(--next-text) !important;
  background: var(--next-body) !important;
  background-image: none !important;
  border-color: var(--next-line) !important;
}

.next-site.nala-page .next-main :where(
  .furniture,
  .anchor-cell,
  .final-object,
  .story-bed,
  .story-table,
  .story-anchor-cell,
  .story-coarse-chair
) {
  color: var(--next-text) !important;
  background: var(--next-card) !important;
  border-color: var(--next-accent) !important;
  box-shadow: none !important;
}

.next-site.nala-page .next-main :where(
  .residual-line,
  .meter i
) {
  background: var(--next-accent) !important;
}

.next-site.nala-page .next-main :where(.meter, .pipeline-tabs button) {
  background: var(--next-card) !important;
  border-color: var(--next-line) !important;
}

.next-site.nala-page .next-main input[type="range"] {
  accent-color: var(--next-accent);
  color-scheme: dark;
}

.next-learning .neuron-core {
  fill: #1b1d1f;
  stroke: #899599;
}

.next-learning .neuron-value,
.next-learning .neuron-label,
.next-learning .layer-label {
  fill: #e3e1dc;
}

.next-site.next-learning :where(
  .sample,
  .training-actions button
) {
  color: var(--next-text) !important;
  background: transparent !important;
  border-color: var(--next-line-strong) !important;
}

.next-site.next-learning :where(
  .sample:hover,
  .sample.is-selected,
  .training-actions button:hover
) {
  color: var(--next-heading) !important;
  background: var(--next-card) !important;
  border-color: var(--next-accent) !important;
}

.next-site.next-learning :where(
  .training-actions button.primary,
  .training-actions button[aria-pressed="true"]
) {
  color: var(--next-body) !important;
  background: var(--next-accent) !important;
  border-color: var(--next-accent) !important;
}

.next-site.next-learning :where(
  .compact-metrics b,
  .prediction-label b,
  .sample span,
  .sample b,
  .rate-control span,
  .lesson-step b,
  .lesson-explainer strong
) {
  color: var(--next-heading) !important;
}

.next-site.next-learning :where(
  .panel-heading p,
  .compact-metrics span,
  .sample-picker legend,
  .rate-control small,
  .trainer-status,
  .lesson-explainer p,
  .bridge-heading > p
) {
  color: var(--next-muted) !important;
}

/* Home modules: one graphite layer, differentiated through alpha, borders and
   physical press feedback rather than additional colours or decoration. */
.next-home .next-page-layout {
  gap: 16px;
}

.next-home .next-main {
  gap: 16px;
}

.next-home .next-post-index {
  position: relative;
  padding: 0;
  overflow: hidden;
  background: var(--next-card) !important;
  border: 1px solid var(--next-line-strong);
  transition: background-color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.next-home .next-post-card {
  display: block;
  min-height: 278px;
  padding: 40px;
  cursor: pointer;
  -webkit-tap-highlight-color: rgb(137 149 153 / 14%);
}

.next-site.next-home .next-post-card:focus-visible {
  outline: 2px solid var(--next-accent) !important;
  outline-offset: -3px !important;
}

.next-site.next-home :where(.next-menu a, .next-profile-links a):focus-visible {
  outline: 2px solid var(--next-accent) !important;
  outline-offset: 2px !important;
}

.next-home .next-post-card:active {
  background: rgb(227 225 220 / 2%);
  transform: translateY(2px);
}

.next-home .next-post-header h1 {
  transition: color 180ms ease;
}

.next-home .next-post-footer span {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 16px;
  color: var(--next-text);
  border: 1px solid var(--next-line-strong);
  transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

.next-home .next-post-footer i {
  margin-left: 8px;
  font-style: normal;
  transition: transform 180ms ease;
}

.next-home .next-sidebar {
  background: transparent !important;
}

.next-home .next-sidebar-inner {
  background: var(--next-card);
  border: 1px solid var(--next-line-strong);
}

.next-home .next-profile-links {
  display: grid;
  gap: 8px;
  margin: 20px 0 0;
}

.next-home .next-profile-links a {
  padding: 5px 10px;
  border: 1px solid var(--next-line);
  transition: background-color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.next-home .next-profile-links a:last-child {
  border-bottom: 1px solid var(--next-line);
}

.next-home .next-profile-links a:active {
  transform: translateX(0);
}

.next-home .next-site-state {
  gap: 8px;
}

.next-home .next-site-state div {
  min-width: 0;
  flex: 1;
  padding: 8px;
  background: rgb(227 225 220 / 2%);
  border: 1px solid var(--next-line);
}

.next-home .next-site-state div:last-child {
  border-right: 1px solid var(--next-line);
}

.next-home .next-menu a:active,
.next-home .next-profile-links a:active {
  background: rgb(227 225 220 / 8%);
}

@media (hover: hover) {
  .next-home .next-post-index:hover {
    background: rgb(227 225 220 / 7%) !important;
    border-color: var(--next-accent);
    transform: translateY(-3px);
  }

  .next-home .next-post-card:hover .next-post-footer span {
    color: var(--next-body);
    background: var(--next-accent);
    border-color: var(--next-accent);
  }

  .next-home .next-post-card:hover .next-post-footer i {
    transform: translateX(3px);
  }

  .next-home .next-profile-links a:hover {
    background: rgb(227 225 220 / 6%);
    border-color: var(--next-accent);
    transform: translateX(2px);
  }
}

@media (max-width: 720px) {
  .next-home .next-main {
    gap: 12px;
  }

  .next-home .next-post-card {
    min-height: 0;
    padding: 28px 20px;
  }

  .next-home .next-post-index {
    border-right: 0;
    border-left: 0;
  }

  .next-home .next-sidebar-inner {
    border-right: 0;
    border-left: 0;
  }
}

@media (max-width: 720px) {
  .next-menu,
  .next-article .next-menu,
  .next-learning .next-menu {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .next-site *,
  .next-site *::before,
  .next-site *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}

/* Bilingual home header: language choice remains a separate, stable route and
   uses the same graphite interaction language as the rest of the journal. */
.next-home .next-header-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  min-height: 112px;
  padding: 4px 24px 8px;
}

.next-home .next-header-content .next-menu {
  align-self: stretch;
  min-height: 52px;
  padding: 0;
}

.next-language-switch {
  display: flex;
  align-items: center;
  align-self: flex-end;
  min-height: 44px;
  color: var(--next-muted);
  font-family: "IBM Plex Mono", Consolas, monospace;
  font-size: 11px;
  line-height: 1;
}

.next-language-switch a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  color: var(--next-muted);
  border-bottom: 1px solid transparent;
  transition: color 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.next-language-switch a:hover,
.next-language-switch a.is-active {
  color: var(--next-heading);
  border-bottom-color: var(--next-accent);
  background: var(--next-card);
}

.next-language-switch a:active {
  background: rgb(227 225 220 / 8%);
}

.next-site.next-home .next-language-switch a:focus-visible {
  outline: 2px solid var(--next-accent) !important;
  outline-offset: 2px !important;
}

@media (max-width: 720px) {
  .next-home .next-header-content {
    min-height: 0;
    padding: 0;
  }

  .next-home .next-language-switch {
    align-self: stretch;
    justify-content: flex-end;
    padding: 0 8px;
    border-bottom: 1px solid var(--next-line);
  }

  .next-home .next-header-content .next-menu {
    width: 100%;
    padding: 8px 4px;
  }
}