/* ============================================================
   Nietzsche Mind — book overview and parallel-text reader
   ============================================================ */

:root {
  --reader-nav-height: 0px;
  --reader-toolbar-height: 0px;
  --reader-column-count: 1;
  --reader-page-width: 112rem;
  --reader-toc-width: clamp(15rem, 19vw, 21rem);
  --reader-analysis-width: clamp(24rem, 31vw, 32rem);
  --reader-gutter: clamp(1rem, 2.6vw, 2.5rem);
  --reader-surface: rgba(236, 230, 216, 0.025);
  --reader-surface-strong: rgba(236, 230, 216, 0.055);
  --reader-focus: #f3c969;
}

.skip-link,
.reader-skip-link {
  position: fixed;
  z-index: 200;
  inset-block-start: 0.75rem;
  inset-inline-start: 0.75rem;
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--gold);
  border-radius: 0.25rem;
  background: var(--ink);
  color: var(--bg);
  font-family: var(--sans);
  font-size: 0.82rem;
  font-weight: 700;
  transform: translateY(calc(-100% - 1.5rem));
  transition: transform 160ms ease;
}

.skip-link:focus,
.reader-skip-link:focus {
  color: var(--bg);
  transform: translateY(0);
}

.reader-page :where(a, button, [tabindex]):focus-visible,
.book-overview :where(a, button, [tabindex]):focus-visible,
.reader-landing :where(a, button, [tabindex]):focus-visible,
.knowledge-analysis-page :where(a, button, [tabindex]):focus-visible {
  outline: 2px solid var(--reader-focus);
  outline-offset: 3px;
}

.reader-page {
  --reader-column-gap: clamp(1rem, 2vw, 2.25rem);
  background:
    radial-gradient(circle at 82% 9%, rgba(226, 75, 44, 0.07), transparent 26rem),
    var(--bg);
}

.reader-page [hidden],
.reader-edition[hidden] {
  display: none !important;
}

.reader-header,
.reader-landing,
.book-overview {
  width: min(100% - (2 * var(--reader-gutter)), var(--reader-page-width));
  margin-inline: auto;
}

.reader-header {
  padding-block: clamp(1.75rem, 4vw, 4rem) clamp(1.25rem, 2.5vw, 2.5rem);
  border-bottom: 1px solid var(--line);
}

.reader-header__eyebrow,
.reader-kicker,
.reader-edition__language,
.reader-meta,
.reader-landing__languages,
.book-overview__meta {
  color: var(--muted-2);
  font-family: var(--mono);
  font-size: 0.7rem;
  line-height: 1.6;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.reader-header h1,
.reader-landing h1,
.book-overview h1 {
  max-width: 22ch;
  margin-top: 0.3rem;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(2.35rem, 6vw, 5.75rem);
  font-weight: 500;
  line-height: 0.98;
  letter-spacing: -0.025em;
}

.reader-header__description,
.reader-landing__description,
.book-overview__description {
  max-width: 68ch;
  margin-top: 1rem;
  color: var(--muted);
  font-family: var(--serif);
  font-size: clamp(1.1rem, 1.7vw, 1.35rem);
  line-height: 1.55;
}

.reader-toolbar,
[data-reader-toolbar] {
  position: sticky;
  z-index: 58;
  top: var(--reader-nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.25rem;
  width: 100%;
  min-height: 3.6rem;
  padding: 0.65rem var(--reader-gutter);
  border-bottom: 1px solid var(--line-2);
  background: rgba(12, 11, 15, 0.92);
  box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.16);
  backdrop-filter: blur(16px);
}

.reader-toolbar__group,
.reader-toolbar__languages,
.reader-language-switcher,
.reader-parallel-switcher {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.reader-toolbar__identity {
  min-width: min(18rem, 28vw);
}

.reader-toolbar__identity .reader-breadcrumb {
  color: var(--muted-2);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.reader-toolbar__identity > div {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.reader-toolbar__identity strong {
  overflow: hidden;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 600;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.reader-toolbar__identity span {
  overflow: hidden;
  color: var(--muted-3);
  font-family: var(--mono);
  font-size: 0.58rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.reader-toolbar__label {
  margin-inline-end: 0.25rem;
  color: var(--muted-3);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

[data-toc-toggle],
[data-parallel-lang],
[data-primary-link],
.reader-analysis-toggle {
  min-height: 2.2rem;
  padding: 0.48rem 0.72rem;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color 150ms ease, background-color 150ms ease, color 150ms ease;
}

[data-toc-toggle]:hover,
[data-parallel-lang]:hover:not([aria-disabled="true"]),
[data-primary-link]:hover {
  border-color: var(--gold);
  color: var(--ink);
}

.reader-analysis-toggle:hover {
  border-color: var(--gold);
  color: var(--ink);
}

[data-parallel-lang][aria-pressed="true"],
[data-parallel-lang].is-active,
[data-primary-link][aria-current="true"] {
  border-color: var(--red);
  background: var(--red);
  color: var(--bg);
}

.reader-analysis-toggle.is-active,
.reader-analysis-toggle[aria-expanded="true"] {
  border-color: var(--gold);
  background: rgba(217, 178, 76, 0.14);
  color: var(--gold);
}

[data-parallel-lang][aria-disabled="true"],
[data-parallel-lang].is-disabled {
  color: var(--muted-4);
  cursor: not-allowed;
  opacity: 0.58;
}

[data-toc-toggle] {
  display: none;
}

.reader-layout,
.reader-shell {
  display: grid;
  grid-template-columns: var(--reader-toc-width) minmax(0, 1fr);
  gap: var(--reader-gutter);
  width: min(100% - (2 * var(--reader-gutter)), var(--reader-page-width));
  margin-inline: auto;
  padding-block: clamp(1.5rem, 3vw, 3.5rem) clamp(4rem, 8vw, 8rem);
}

#reader-toc {
  position: sticky;
  top: calc(var(--reader-nav-height) + var(--reader-toolbar-height) + 1.25rem);
  align-self: start;
  min-width: 0;
  border-inline-end: 1px solid var(--line);
  padding-inline-end: clamp(0.8rem, 1.7vw, 1.5rem);
  max-height: calc(100vh - var(--reader-nav-height) - var(--reader-toolbar-height) - 2rem);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--muted-4) transparent;
}

.reader-toc__title {
  margin-bottom: 0.9rem;
  color: var(--muted-2);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.reader-toc__parts,
.reader-toc__units {
  margin: 0;
  padding: 0;
  list-style: none;
}

.reader-toc__part + .reader-toc__part {
  margin-top: 1.15rem;
}

.reader-toc__part-label {
  margin-bottom: 0.35rem;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.25;
}

.reader-toc__unit + .reader-toc__unit {
  margin-top: 0.12rem;
}

.reader-toc__link {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.45rem;
  align-items: baseline;
  padding: 0.42rem 0.5rem;
  border-inline-start: 2px solid transparent;
  color: var(--muted-2);
  font-family: var(--sans);
  font-size: 0.78rem;
  line-height: 1.35;
  transition: border-color 150ms ease, background-color 150ms ease, color 150ms ease;
}

.reader-toc__link:hover {
  border-inline-start-color: var(--gold);
  background: var(--reader-surface);
  color: var(--ink);
}

.reader-toc__link.is-current,
.reader-toc__link[aria-current="page"] {
  border-inline-start-color: var(--red);
  background: rgba(226, 75, 44, 0.1);
  color: var(--ink);
}

.reader-toc__unit-label {
  min-width: 0;
  overflow-wrap: anywhere;
}

.reader-toc__source-id {
  color: var(--muted-4);
  font-family: var(--mono);
  font-size: 0.58rem;
  white-space: nowrap;
}

.reader-main,
.reader-content,
#reader-main {
  min-width: 0;
}

.reader-unit-heading {
  margin-bottom: clamp(1.5rem, 3vw, 2.75rem);
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.reader-unit-heading h1 {
  max-width: 28ch;
  margin-top: 0.3rem;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 4.25rem);
  font-weight: 500;
  line-height: 1;
}

.reader-unit-heading > a {
  display: inline-block;
  margin-top: 0.75rem;
  color: var(--muted-3);
  font-family: var(--mono);
  font-size: 0.66rem;
}

.reader-columns,
.reader-editions,
[data-reader-editions] {
  display: flex;
  gap: 0;
  align-items: stretch;
  min-width: 0;
  overflow: visible;
}

.reader-page[data-reader-columns="1"] :where(.reader-columns, .reader-editions, [data-reader-editions]) {
  max-width: 58rem;
}

.reader-edition {
  flex: 1 1 0;
  min-width: 0;
  overflow: visible;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.14rem, 1.35vw, 1.34rem);
  line-height: 1.72;
  overflow-wrap: break-word;
  hyphens: auto;
}

.reader-edition--parallel {
  padding-inline-start: 0;
  border-inline-start: 0;
}

.reader-column-resizer {
  position: relative;
  flex: 0 0 clamp(1.1rem, 1.5vw, 1.6rem);
  align-self: stretch;
  min-width: 1.1rem;
  min-height: 10rem;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--muted-4);
  cursor: col-resize;
  touch-action: none;
}

.reader-column-resizer::before {
  content: '';
  position: absolute;
  inset-block: 0;
  inset-inline-start: 50%;
  width: 1px;
  background: var(--line-2);
  transform: translateX(-50%);
  transition: width 140ms ease, background-color 140ms ease;
}

.reader-column-resizer::after {
  content: '⋮';
  position: sticky;
  top: calc(var(--reader-nav-height) + var(--reader-toolbar-height) + 1.5rem);
  display: grid;
  place-items: center;
  width: 1.15rem;
  height: 2rem;
  margin: 1rem auto 0;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: var(--bg);
  color: var(--muted-3);
  font-family: var(--mono);
  line-height: 1;
}

.reader-column-resizer:hover::before,
.reader-column-resizer:focus-visible::before,
.reader-page.is-resizing-columns .reader-column-resizer::before {
  width: 3px;
  background: var(--gold);
}

.reader-column-resizer:hover::after,
.reader-column-resizer:focus-visible::after {
  border-color: var(--gold);
  color: var(--gold);
}

.reader-page.is-resizing-columns,
.reader-page.is-resizing-columns * {
  cursor: col-resize !important;
  user-select: none !important;
}

.reader-edition__header {
  display: grid;
  gap: 0.7rem;
  margin-bottom: clamp(1rem, 2vw, 1.75rem);
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--line);
}

.reader-edition__meta {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
}

.reader-edition__identity {
  display: inline-flex;
  gap: 0.55rem;
  align-items: baseline;
}

.reader-edition__header small {
  color: var(--muted-4);
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.reader-copy-button {
  display: inline-flex;
  gap: 0.4rem;
  align-items: center;
  min-height: 2rem;
  padding: 0.38rem 0.62rem;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: transparent;
  color: var(--muted-2);
  font-family: var(--mono);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color 140ms ease, background-color 140ms ease, color 140ms ease;
}

.reader-copy-button:hover {
  border-color: var(--gold);
  color: var(--ink);
}

.reader-copy-button.is-copied {
  border-color: var(--gold);
  background: rgba(217, 178, 76, 0.12);
  color: var(--gold);
}

.reader-copy-button:disabled {
  cursor: wait;
  opacity: 0.72;
}

.reader-edition .reader-edition__unit-title {
  margin: 0;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.1rem, 1.65vw, 1.45rem);
  font-weight: 600;
  line-height: 1.2;
}

.reader-edition__title {
  margin-top: 0.15rem;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.45rem, 2.5vw, 2.1rem);
  font-weight: 600;
  line-height: 1.15;
}

.reader-edition :where(h2, h3, h4) {
  margin: 1.75em 0 0.55em;
  color: var(--ink);
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.18;
}

.reader-edition h2 { font-size: 1.55em; }
.reader-edition h3 { font-size: 1.3em; }
.reader-edition h4 { font-size: 1.1em; }

.reader-edition p + p {
  margin-top: 1em;
}

.reader-edition :where(ul, ol) {
  margin: 1em 0;
  padding-inline-start: 1.35em;
}

.reader-edition li + li {
  margin-top: 0.35em;
}

.reader-edition blockquote {
  margin: 1.4em 0;
  padding: 0.25em 0 0.25em 1em;
  border-inline-start: 2px solid var(--red);
  color: var(--muted);
  font-style: italic;
}

.reader-edition a {
  text-decoration: underline;
  text-decoration-color: rgba(226, 75, 44, 0.55);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.16em;
}

.reader-edition :where(sup, .footnote-ref) {
  font-family: var(--mono);
  font-size: 0.62em;
  line-height: 0;
}

/* Optional knowledge analysis shown beside the language reader. */
.reader-analysis-panel[hidden],
.reader-analysis-backdrop[hidden] {
  display: none !important;
}

.reader-analysis-backdrop {
  position: fixed;
  z-index: 92;
  inset: calc(var(--reader-nav-height) + var(--reader-toolbar-height)) 0 0;
  background: rgba(0, 0, 0, 0.62);
  backdrop-filter: blur(2px);
}

.reader-analysis-panel {
  position: fixed;
  z-index: 96;
  inset-block: calc(var(--reader-nav-height) + var(--reader-toolbar-height)) 0;
  inset-inline-end: 0;
  width: min(90vw, 42rem);
  padding: 0 clamp(1.2rem, 2.4vw, 2.25rem) 4rem;
  border-inline-start: 1px solid var(--line-2);
  background:
    radial-gradient(circle at 88% 0, rgba(217, 178, 76, 0.1), transparent 20rem),
    #0a090c;
  box-shadow: -1.25rem 0 3rem rgba(0, 0, 0, 0.46);
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--muted-4) transparent;
}

.reader-analysis-resizer {
  display: none;
}

.reader-analysis-panel__header {
  position: sticky;
  z-index: 2;
  top: 0;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  margin-inline: calc(-1 * clamp(1.2rem, 2.4vw, 2.25rem));
  padding: 1.25rem clamp(1.2rem, 2.4vw, 2.25rem) 1rem;
  border-bottom: 1px solid var(--line-2);
  background: rgba(10, 9, 12, 0.94);
  backdrop-filter: blur(14px);
}

.reader-analysis-panel__header h2 {
  max-width: 27ch;
  margin-top: 0.25rem;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.45rem, 2.2vw, 2rem);
  font-weight: 600;
  line-height: 1.12;
}

.reader-analysis-close {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 2.4rem;
  height: 2.4rem;
  padding: 0;
  border: 1px solid var(--line-2);
  border-radius: 50%;
  background: transparent;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}

.reader-analysis-close:hover {
  border-color: var(--gold);
  color: var(--ink);
}

.reader-analysis-panel__actions {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  align-items: center;
  margin-top: 1.2rem;
  flex-wrap: wrap;
}

.reader-analysis-panel__actions > a {
  color: var(--gold);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.04em;
}

.reader-analysis-panel__note {
  margin-top: 1rem;
  padding: 0.8rem 0.95rem;
  border: 1px solid rgba(217, 178, 76, 0.2);
  background: rgba(217, 178, 76, 0.055);
  color: var(--muted-2);
  font-size: 0.78rem;
  line-height: 1.55;
}

.reader-analysis-prose,
.knowledge-analysis-prose {
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.05rem, 1.25vw, 1.22rem);
  line-height: 1.68;
}

.reader-analysis-prose {
  margin-top: 1.75rem;
}

.reader-analysis-prose :where(h2, h3, h4),
.knowledge-analysis-prose :where(h1, h2, h3, h4) {
  color: var(--ink);
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.16;
}

.reader-analysis-prose h3 {
  margin: 2.2em 0 0.7em;
  padding-top: 0.8em;
  border-top: 1px solid var(--line);
  font-size: 1.55em;
}

.reader-analysis-prose h3:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.reader-analysis-prose h4 {
  margin: 1.6em 0 0.55em;
  font-size: 1.24em;
}

.reader-analysis-prose p + p,
.knowledge-analysis-prose p + p {
  margin-top: 1em;
}

.reader-analysis-prose :where(ul, ol),
.knowledge-analysis-prose :where(ul, ol) {
  margin: 1em 0;
  padding-inline-start: 1.4em;
}

.reader-analysis-prose li + li,
.knowledge-analysis-prose li + li {
  margin-top: 0.4em;
}

.reader-analysis-prose blockquote,
.knowledge-analysis-prose blockquote {
  margin: 1.35em 0;
  padding: 0.3em 0 0.3em 1em;
  border-inline-start: 2px solid var(--red);
  color: var(--muted);
}

@media (min-width: 96rem) {
  .reader-analysis-panel {
    width: var(--reader-analysis-width);
  }

  .reader-analysis-resizer {
    position: fixed;
    z-index: 98;
    inset-block: calc(var(--reader-nav-height) + var(--reader-toolbar-height)) 0;
    inset-inline-end: calc(var(--reader-analysis-width) - 0.65rem);
    display: block;
    width: 1.3rem;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: col-resize;
    touch-action: none;
  }

  .reader-analysis-resizer::before {
    content: '';
    position: absolute;
    inset-block: 0;
    inset-inline-start: 50%;
    width: 1px;
    background: var(--line-2);
    transform: translateX(-50%);
  }

  .reader-analysis-resizer:hover::before,
  .reader-analysis-resizer:focus-visible::before,
  .reader-page.is-resizing-analysis .reader-analysis-resizer::before {
    width: 3px;
    background: var(--gold);
  }

  body.reader-analysis-open .reader-layout {
    width: min(
      calc(100% - var(--reader-analysis-width) - var(--reader-gutter) - var(--reader-gutter) - var(--reader-gutter)),
      calc(var(--reader-page-width) - var(--reader-analysis-width))
    );
    margin-inline-start: var(--reader-gutter);
    margin-inline-end: calc(var(--reader-analysis-width) + var(--reader-gutter) + var(--reader-gutter));
  }
}

.reader-page.is-resizing-analysis,
.reader-page.is-resizing-analysis * {
  cursor: col-resize !important;
  user-select: none !important;
}

@media (max-width: 95.999rem) {
  body.reader-analysis-open {
    overflow: hidden;
  }
}

.reader-unit-meta,
.reader-source-id {
  color: var(--muted-3);
  font-family: var(--mono);
  font-size: 0.65rem;
  line-height: 1.5;
  letter-spacing: 0.06em;
}

.reader-pagination {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: clamp(2.5rem, 6vw, 5rem);
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.reader-pager {
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: stretch;
}

.reader-pager > a:nth-child(2) {
  align-items: center;
  min-width: 6rem;
  text-align: center;
}

.reader-pagination a {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 4.5rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--line);
  color: var(--muted);
}

.reader-pagination a:last-child {
  text-align: end;
}

.reader-pagination a:hover {
  border-color: var(--gold);
  color: var(--ink);
}

/* Book overview and language landing pages */
.book-overview,
.reader-landing {
  padding-block: clamp(2.5rem, 7vw, 7rem);
}

.book-overview {
  padding-top: 0;
}

.book-overview__hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) clamp(11rem, 24vw, 17rem);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: center;
  padding-block: clamp(3rem, 8vw, 7.5rem);
  border-bottom: 1px solid var(--line);
}

.book-overview__hero::after {
  content: '';
  position: absolute;
  z-index: -1;
  inset: 8% -8% auto auto;
  width: min(48vw, 38rem);
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(226, 75, 44, 0.13), transparent 66%);
  pointer-events: none;
}

.reader-breadcrumb {
  color: var(--muted-2);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.book-overview__year {
  margin-top: clamp(1.5rem, 3vw, 2.5rem);
  color: var(--gold);
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.16em;
}

.book-overview__title-en,
.book-overview__title-de,
.reader-landing__original {
  margin-top: 0.7rem;
  color: var(--muted-3);
  font-family: var(--mono);
  font-size: clamp(0.75rem, 1.3vw, 0.95rem);
  font-style: italic;
}

.book-overview__tagline {
  max-width: 52ch;
  margin-top: 1.35rem;
  color: var(--muted);
  font-family: var(--serif);
  font-size: clamp(1.2rem, 2.2vw, 1.75rem);
  font-style: italic;
  line-height: 1.35;
}

.book-overview__cover {
  overflow: hidden;
  aspect-ratio: 3 / 4;
  border-radius: 0.25rem;
  box-shadow: 0 1.5rem 4rem rgba(0, 0, 0, 0.52);
}

.book-overview__read,
.book-overview__body {
  max-width: 62rem;
  margin-inline: auto;
  padding-block: clamp(3rem, 7vw, 6rem);
}

.book-overview__read {
  border-bottom: 1px solid var(--line);
}

.book-overview__read h2 {
  margin-top: 0.35rem;
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 500;
}

.book-overview__editions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.book-overview__edition {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.2rem 1rem;
  align-items: center;
  padding: 1rem;
  border: 1px solid var(--line-2);
  color: var(--ink);
}

.book-overview__edition span {
  font-family: var(--serif);
  font-size: 1.35rem;
}

.book-overview__edition small {
  color: var(--muted-3);
  font-family: var(--mono);
  font-size: 0.62rem;
  grid-column: 1;
}

.book-overview__edition b {
  color: var(--red);
  font-family: var(--serif);
  font-size: 1.5rem;
  grid-column: 2;
  grid-row: 1 / span 2;
}

.book-overview__edition:hover {
  border-color: var(--gold);
  background: var(--reader-surface);
}

.book-overview__hint {
  margin-top: 1rem;
  color: var(--muted-3);
  font-size: 0.85rem;
}

.book-overview__body {
  display: grid;
  gap: clamp(2.5rem, 5vw, 4rem);
}

.book-overview__body > div > p:not(.reader-kicker) {
  color: var(--muted);
  font-size: clamp(1rem, 1.5vw, 1.18rem);
  line-height: 1.75;
}

.book-overview__body > div > p + p {
  margin-top: 1rem;
}

.book-overview__themes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1rem;
  list-style: none;
}

.book-overview__themes li {
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
}

.book-overview__quote {
  margin-top: 1.25rem;
  padding-inline-start: 1.25rem;
  border-inline-start: 2px solid var(--red);
}

.book-overview__quote p {
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.6vw, 2.25rem);
  font-style: italic;
  line-height: 1.25;
}

.book-overview__quote footer {
  margin-top: 0.7rem;
  color: var(--muted-2);
  line-height: 1.55;
}

.book-overview__why {
  display: flex;
  gap: 1rem;
  align-items: baseline;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(217, 178, 76, 0.35);
}

.book-overview__why strong {
  color: var(--gold);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.book-overview__why span {
  color: var(--muted);
  font-style: italic;
  line-height: 1.6;
}

.reader-layout > .reader-landing {
  width: 100%;
  margin: 0;
  padding: 0;
}

.reader-landing h1 {
  margin-top: 0.45rem;
}

.reader-start {
  display: inline-flex;
  gap: 1rem;
  align-items: center;
  margin-top: 1.5rem;
  padding: 0.85rem 1.1rem;
  border-radius: 999px;
  background: var(--red);
  color: var(--bg);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.reader-start:hover {
  background: var(--gold);
  color: var(--bg);
}

.reader-landing__contents {
  display: grid;
  gap: 2rem;
  margin-top: clamp(3rem, 6vw, 5rem);
}

.reader-landing__part h2 {
  padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--line-2);
  font-family: var(--serif);
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  font-weight: 600;
}

.reader-landing__part ol {
  list-style: none;
}

.reader-landing__part li + li {
  border-top: 1px solid var(--line);
}

.reader-landing__part a {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0.25rem;
  color: var(--muted);
}

.reader-landing__part a:hover {
  color: var(--gold);
}

.reader-landing__part small {
  color: var(--muted-4);
  font-family: var(--mono);
  font-size: 0.58rem;
  white-space: nowrap;
}

.reader-announcer {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.reader-attribution {
  display: grid;
  gap: 0.4rem;
  margin-top: clamp(2.5rem, 6vw, 5rem);
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted-3);
  font-size: 0.75rem;
  line-height: 1.55;
}

.reader-attribution strong {
  color: var(--muted-2);
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.books-catalog {
  max-width: 72rem;
}

.books-catalog__list {
  margin-top: clamp(2.5rem, 6vw, 5rem);
  border-top: 1px solid var(--line-2);
  list-style: none;
}

.books-catalog__list li {
  border-bottom: 1px solid var(--line-2);
}

.books-catalog__list a {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  align-items: baseline;
  padding: clamp(1rem, 2vw, 1.5rem) 0.25rem;
  color: var(--ink);
}

.books-catalog__list a:hover {
  color: var(--gold);
}

.books-catalog__list span {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.books-catalog__list strong {
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.7vw, 2.15rem);
  font-weight: 500;
}

.books-catalog__list small,
.books-catalog__list em {
  color: var(--muted-3);
  font-family: var(--mono);
  font-size: 0.65rem;
  font-style: normal;
}

.book-overview__grid,
.reader-landing__grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(15rem, 1fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: start;
}

.book-overview__actions,
.reader-landing__languages {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.book-overview__actions a,
.reader-landing__languages a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line-2);
  color: var(--ink);
}

.book-overview__actions a:hover,
.reader-landing__languages a:hover {
  border-color: var(--gold);
  background: var(--reader-surface);
}

.book-overview__analysis {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  align-items: center;
  max-width: 62rem;
  margin-inline: auto;
  padding-block: clamp(2rem, 5vw, 4rem);
  border-bottom: 1px solid var(--line);
}

.book-overview__analysis h2 {
  margin-top: 0.25rem;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  font-weight: 500;
}

.book-overview__analysis p:not(.reader-kicker) {
  max-width: 54ch;
  margin-top: 0.75rem;
  color: var(--muted);
  line-height: 1.6;
}

.book-overview__analysis > a,
.knowledge-analysis-hero__actions a,
.knowledge-analysis-article__links a {
  display: inline-flex;
  gap: 0.6rem;
  align-items: center;
  flex: 0 0 auto;
  padding: 0.8rem 1rem;
  border: 1px solid var(--line-2);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
}

.book-overview__analysis > a:hover,
.knowledge-analysis-hero__actions a:hover,
.knowledge-analysis-article__links a:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.knowledge-analysis-page {
  background:
    radial-gradient(circle at 84% 4%, rgba(217, 178, 76, 0.09), transparent 31rem),
    var(--bg);
}

.knowledge-analysis-index,
.knowledge-analysis-article-page {
  width: min(100% - (2 * var(--reader-gutter)), 76rem);
  margin-inline: auto;
  padding-block: clamp(3rem, 7vw, 7rem);
}

.knowledge-analysis-layout > .knowledge-analysis-index,
.knowledge-analysis-layout > .knowledge-analysis-article-page {
  width: 100%;
  min-width: 0;
  margin: 0;
  padding: 0;
}

.knowledge-analysis-toolbar__actions {
  justify-content: flex-end;
}

.knowledge-analysis-hero {
  padding-bottom: clamp(2.5rem, 6vw, 5rem);
  border-bottom: 1px solid var(--line);
}

.knowledge-analysis-hero > .reader-kicker {
  margin-top: clamp(2rem, 4vw, 3.5rem);
}

.knowledge-analysis-hero h1 {
  max-width: 15ch;
  margin-top: 0.35rem;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(3rem, 7vw, 6.5rem);
  font-weight: 500;
  line-height: 0.96;
  letter-spacing: -0.025em;
}

.knowledge-analysis-hero__original {
  margin-top: 0.75rem;
  color: var(--muted-3);
  font-family: var(--mono);
  font-size: 0.8rem;
  font-style: italic;
}

.knowledge-analysis-hero__intro {
  max-width: 68ch;
  margin-top: 1.75rem;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.knowledge-analysis-hero__intro p + p {
  margin-top: 1rem;
}

.knowledge-analysis-hero__actions {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.knowledge-analysis-hero__actions .reader-start {
  margin-top: 0;
  border-color: var(--red);
  background: var(--red);
  color: var(--bg);
}

.knowledge-analysis-index__contents {
  display: grid;
  gap: clamp(2rem, 5vw, 4rem);
  padding-block: clamp(3rem, 7vw, 6rem);
}

.knowledge-analysis-index__part h2 {
  margin-bottom: 1rem;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.75rem, 3vw, 2.7rem);
  font-weight: 500;
}

.knowledge-analysis-index__part ol {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.knowledge-analysis-index__part li {
  border-bottom: 1px solid var(--line);
}

.knowledge-analysis-index__part a {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 0.8rem 1.25rem;
  align-items: center;
  padding: 1rem 0.8rem;
  color: var(--muted);
  transition: background-color 140ms ease, color 140ms ease;
}

.knowledge-analysis-index__part a:hover {
  background: var(--reader-surface);
  color: var(--ink);
}

.knowledge-analysis-index__part a span {
  font-family: var(--serif);
  font-size: clamp(1.05rem, 1.6vw, 1.28rem);
  line-height: 1.28;
}

.knowledge-analysis-index__part a small {
  color: var(--muted-4);
  font-family: var(--mono);
  font-size: 0.62rem;
}

.knowledge-analysis-index__part a b {
  color: var(--red);
  font-weight: 400;
}

.knowledge-analysis-disclaimer {
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid rgba(217, 178, 76, 0.2);
  background: rgba(217, 178, 76, 0.05);
}

.knowledge-analysis-disclaimer strong {
  color: var(--gold);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.knowledge-analysis-disclaimer p {
  max-width: 72ch;
  margin-top: 0.65rem;
  color: var(--muted);
  line-height: 1.65;
}

.knowledge-analysis-article-page {
  width: min(100% - (2 * var(--reader-gutter)), 68rem);
}

.knowledge-analysis-article__meta {
  margin-bottom: clamp(2rem, 5vw, 4rem);
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--line);
}

.knowledge-analysis-article__meta > .reader-kicker {
  margin-top: 2rem;
}

.knowledge-analysis-article__links {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.knowledge-analysis-article__links span {
  color: var(--muted-4);
  font-family: var(--mono);
  font-size: 0.66rem;
}

.knowledge-analysis-prose {
  max-width: 48rem;
  margin-inline: auto;
  font-size: clamp(1.08rem, 1.6vw, 1.3rem);
}

.knowledge-analysis-prose h1 {
  margin-bottom: 1.1em;
  color: var(--ink);
  font-size: clamp(2.5rem, 5.5vw, 5rem);
  font-weight: 500;
  letter-spacing: -0.02em;
}

.knowledge-analysis-prose h2 {
  margin: 2.5em 0 0.75em;
  padding-top: 1.1em;
  border-top: 1px solid var(--line);
  font-size: clamp(1.65rem, 3vw, 2.4rem);
}

.knowledge-analysis-prose h3 {
  margin: 1.75em 0 0.55em;
  font-size: clamp(1.25rem, 2.1vw, 1.65rem);
}

.knowledge-analysis-prose blockquote h3 {
  margin-top: 0;
}

.knowledge-analysis-pager {
  margin-top: clamp(3rem, 8vw, 7rem);
}

@media (max-width: 72rem) {
  [data-toc-toggle] {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .reader-layout,
  .reader-shell {
    grid-template-columns: minmax(0, 1fr);
  }

  #reader-toc {
    position: fixed;
    z-index: 90;
    inset-block: calc(var(--reader-nav-height) + var(--reader-toolbar-height)) 0;
    inset-inline-start: 0;
    width: min(88vw, 24rem);
    padding: 1.25rem var(--reader-gutter) 3rem;
    border-inline-end: 1px solid var(--line-2);
    background: var(--bg-2, var(--bg));
    box-shadow: 1rem 0 3rem rgba(0, 0, 0, 0.42);
    overflow-y: auto;
    overscroll-behavior: contain;
    transform: translateX(-105%);
    visibility: hidden;
    transition: transform 220ms ease, visibility 220ms step-end;
  }

  #reader-toc.is-open {
    transform: translateX(0);
    visibility: visible;
    transition: transform 220ms ease, visibility 0ms step-start;
  }

  body.reader-toc-open {
    overflow: hidden;
  }

  body.reader-toc-open::after {
    content: '';
    position: fixed;
    z-index: 80;
    inset: calc(var(--reader-nav-height) + var(--reader-toolbar-height)) 0 0;
    background: rgba(0, 0, 0, 0.58);
    backdrop-filter: blur(2px);
  }
}

@media (max-width: 46rem) {
  .reader-toolbar,
  [data-reader-toolbar] {
    align-items: flex-start;
    flex-direction: column;
    padding-block: 0.65rem;
  }

  .reader-toolbar__group,
  .reader-toolbar__languages,
  .reader-language-switcher,
  .reader-parallel-switcher {
    width: 100%;
  }

  .reader-analysis-panel {
    width: 100vw;
    padding-inline: var(--reader-gutter);
  }

  .reader-columns,
  .reader-editions,
  [data-reader-editions] {
    flex-direction: column;
    gap: 2.5rem;
  }

  .reader-column-resizer {
    display: none;
  }

  .reader-edition {
    flex: 1 1 auto !important;
  }

  .reader-edition--parallel {
    padding-block-start: 2rem;
    padding-inline-start: 0;
    border-block-start: 1px solid var(--line-2);
    border-inline-start: 0;
  }

  .reader-pagination,
  .book-overview__grid,
  .reader-landing__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .reader-pagination a:last-child {
    text-align: start;
  }

  .reader-pager {
    grid-template-columns: minmax(0, 1fr);
  }

  .reader-pager > * {
    width: 100%;
  }

  .book-overview__hero {
    grid-template-columns: minmax(0, 1fr);
  }

  .book-overview__cover {
    width: min(70vw, 15rem);
  }

  .book-overview__why {
    align-items: flex-start;
    flex-direction: column;
  }

  .book-overview__analysis {
    align-items: flex-start;
    flex-direction: column;
  }

  .knowledge-analysis-index__part a {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .knowledge-analysis-index__part a small {
    grid-column: 1;
    grid-row: 2;
  }

  .knowledge-analysis-index__part a b {
    grid-column: 2;
    grid-row: 1 / span 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .skip-link,
  .reader-skip-link,
  #reader-toc,
  [data-toc-toggle],
  [data-parallel-lang],
  [data-primary-link],
  .reader-analysis-toggle,
  .reader-analysis-panel,
  .reader-toc__link {
    scroll-behavior: auto;
    transition: none;
  }
}

@media print {
  .nm-nav,
  .reader-toolbar,
  [data-reader-toolbar],
  #reader-toc,
  .reader-pagination,
  .reader-column-resizer,
  .reader-analysis-panel,
  .reader-analysis-backdrop,
  .skip-link,
  .reader-skip-link {
    display: none !important;
  }

  .reader-layout,
  .reader-shell,
  .reader-columns,
  .reader-editions,
  [data-reader-editions] {
    display: block;
    width: 100%;
    max-width: none;
    padding: 0;
  }

  .reader-edition {
    color: #111;
    break-after: page;
  }

  .reader-edition--parallel {
    margin-top: 2rem;
    padding: 0;
    border: 0;
  }
}