:root {
  --font-text: Georgia, "Times New Roman", "PT Serif", serif;
  --font-ui: Arial, "Helvetica Neue", "Segoe UI", sans-serif;
  --color-page: #fbfaf6;
  --color-surface: #fffdf8;
  --color-surface-muted: #f2eee6;
  --color-text: #1f1d19;
  --color-text-strong: #11100e;
  --color-muted: #686056;
  --color-subtle: #8a8174;
  --color-border: #d8d0c2;
  --color-border-strong: #aaa091;
  --color-focus: #2f6f7e;
  --color-action: #614531;
  --color-action-soft: #f7eee5;
  --color-danger: #8a3229;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --radius-control: 0.375rem;
  --measure-text: 68ch;
  --measure-page: 58rem;
}

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

html {
  min-height: 100%;
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--color-text);
  background: var(--color-page);
  font-family: var(--font-text);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

button,
input {
  font: inherit;
}

button {
  appearance: none;
}

a {
  color: inherit;
}

img,
video {
  max-width: 100%;
}

.container {
  width: min(100% - 2rem, var(--measure-page));
  margin-inline: auto;
}

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

.skip-link {
  position: fixed;
  z-index: 20;
  top: var(--space-4);
  left: var(--space-4);
  transform: translateY(-150%);
  border: 1px solid var(--color-focus);
  border-radius: var(--radius-control);
  padding: var(--space-3) var(--space-4);
  color: var(--color-text-strong);
  background: var(--color-surface);
  font-family: var(--font-ui);
  font-size: 0.95rem;
  text-decoration: none;
}

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

.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text-strong);
  font-family: var(--font-ui);
  text-decoration: none;
}

.entry-brand {
  margin-bottom: var(--space-3);
}

.site-brand__logo {
  display: block;
  width: 3.25rem;
  height: 3.25rem;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-surface);
  object-fit: cover;
}

.site-brand__text {
  display: grid;
  gap: 0.1rem;
}

.site-brand__title {
  font-size: 0.94rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.site-brand__subtitle {
  color: var(--color-muted);
  font-size: 0.78rem;
}

.site-banner {
  background: var(--color-surface);
}

.site-banner .container {
  display: grid;
}

.site-banner__link {
  display: grid;
}

.site-banner img {
  display: block;
  width: 100%;
  height: clamp(8.5rem, 20vw, 13rem);
  object-fit: cover;
  object-position: left center;
}

.page-shell {
  padding: var(--space-10) 0 var(--space-16);
}

main:focus {
  outline: none;
}

.entry-page {
  display: grid;
  gap: var(--space-10);
}

.entry-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: var(--space-6);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-6);
  color: var(--color-muted);
  font-family: var(--font-ui);
}

.entry-heading {
  display: grid;
  min-width: 0;
}

.entry-kicker {
  margin: 0 0 var(--space-2);
  color: var(--color-muted);
  font-family: var(--font-ui);
  font-size: 0.84rem;
  line-height: 1.35;
}

.entry-header h1,
.lexicon-title-block h1,
.error-page h1 {
  margin: 0;
  color: var(--color-text-strong);
  font-size: 1.18rem;
  line-height: 1.25;
}

.entry-date {
  max-width: 18rem;
  padding-top: 0.1rem;
  font-size: 0.9rem;
  line-height: 1.45;
  text-align: right;
}

.entry-header-actions {
  display: grid;
  justify-items: end;
  gap: var(--space-3);
}

.entry-header-link {
  min-width: 0;
}

.entry-layout {
  display: grid;
  gap: var(--space-8);
  align-items: start;
}

.entry-layout--with-related {
  grid-template-columns: minmax(0, var(--measure-text)) minmax(12rem, 16rem);
}

.entry-main {
  display: grid;
  gap: var(--space-10);
  min-width: 0;
}

.entry-body {
  max-width: var(--measure-text);
}

.entry-text {
  white-space: pre-wrap;
  overflow-wrap: break-word;
  color: var(--color-text-strong);
  font-size: 1.5rem;
  line-height: 1.66;
}

.entry-media {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(17rem, 100%), 1fr));
  gap: var(--space-4);
  align-items: start;
}

.entry-media img,
.entry-media video {
  display: block;
  width: 100%;
  max-height: min(72vh, 46rem);
  border: 1px solid var(--color-border);
  background: var(--color-surface-muted);
  object-fit: contain;
}

.entry-media video {
  aspect-ratio: 16 / 9;
}

.related-animals {
  display: grid;
  gap: var(--space-3);
  min-width: 0;
  border-left: 1px solid var(--color-border);
  padding-left: var(--space-5);
}

.related-animals h2 {
  margin: 0;
  color: var(--color-muted);
  font-family: var(--font-ui);
  font-size: 0.92rem;
  line-height: 1.35;
}

.related-animals-list {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.entry-actions,
.entry-navigation,
.jump-form,
.random-form {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  font-family: var(--font-ui);
}

.entry-actions {
  min-height: 2.75rem;
  color: var(--color-muted);
}

.entry-navigation {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: var(--space-12);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-6);
}

.entry-navigation > :last-child {
  margin-left: auto;
}

.action-button,
.nav-link-button {
  min-height: 2.75rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-control);
  padding: 0 var(--space-4);
  color: var(--color-text);
  background: var(--color-surface);
  font-family: var(--font-ui);
  font-size: 0.95rem;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: border-color 180ms ease, background-color 180ms ease, color 180ms ease;
}

.nav-link-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 7.5rem;
}

.action-button:hover,
.nav-link-button:hover {
  border-color: var(--color-action);
  background: var(--color-action-soft);
}

.action-button:focus-visible,
.nav-link-button:focus-visible,
.jump-form input:focus-visible,
.site-brand:focus-visible,
.skip-link:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
}

.action-button:disabled,
.nav-link-button.is-disabled {
  color: var(--color-subtle);
  border-color: var(--color-border);
  background: var(--color-surface-muted);
  cursor: default;
}

.action-button:disabled:hover,
.nav-link-button.is-disabled:hover {
  border-color: var(--color-border);
  background: var(--color-surface-muted);
}

.like-button {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.like-button__mark {
  min-width: 1rem;
  color: var(--color-action);
  font-size: 1.05rem;
  line-height: 1;
}

.like-button__count {
  min-width: 1.5rem;
  color: var(--color-muted);
  text-align: right;
}

.like-button[aria-pressed="true"],
.like-button.is-liked {
  border-color: var(--color-action);
  color: var(--color-action);
  background: var(--color-action-soft);
}

.like-button.is-pending {
  color: var(--color-muted);
  background: var(--color-surface-muted);
}

.like-button.is-failed {
  border-color: var(--color-danger);
  color: var(--color-danger);
  background: #fff4f1;
}

.copy-button.is-success {
  border-color: var(--color-focus);
  color: var(--color-focus);
  background: #eef7f5;
}

.copy-button.is-fallback {
  border-color: var(--color-action);
  background: var(--color-action-soft);
}

.status-note {
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  color: var(--color-muted);
  font-family: var(--font-ui);
  font-size: 0.92rem;
}

.jump-form {
  justify-content: center;
}

.random-form {
  justify-content: center;
}

.jump-form label {
  color: var(--color-muted);
  font-size: 0.92rem;
}

.jump-form input {
  width: 5.75rem;
  min-height: 2.75rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-control);
  padding: 0 var(--space-3);
  color: var(--color-text);
  background: var(--color-surface);
}

.error-page {
  display: grid;
  gap: var(--space-4);
  max-width: 36rem;
}

.lexicon-page {
  display: grid;
  gap: var(--space-8);
}

.lexicon-header {
  align-items: center;
}

.lexicon-header .nav-link-button {
  justify-self: end;
}

.lexicon-title-block {
  display: grid;
  gap: var(--space-2);
}

.lexicon-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 6.5rem;
  gap: var(--space-8);
  align-items: start;
}

.lexicon-letter-nav {
  position: sticky;
  top: var(--space-6);
  display: grid;
  gap: var(--space-5);
  max-height: calc(100vh - var(--space-12));
  overflow-y: auto;
  overscroll-behavior: contain;
  border-left: 1px solid var(--color-border);
  padding-left: var(--space-3);
  padding-bottom: var(--space-2);
  font-family: var(--font-ui);
}

.lexicon-letter-nav__section {
  display: grid;
  gap: var(--space-2);
}

.lexicon-letter-nav__section + .lexicon-letter-nav__section {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-4);
}

.lexicon-letter-nav__title {
  color: var(--color-muted);
  font-size: 0.72rem;
  line-height: 1.25;
}

.lexicon-letter-nav__list {
  display: grid;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

.lexicon-letter-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  min-height: 2rem;
  border-radius: var(--radius-control);
  color: var(--color-text);
  font-size: 0.9rem;
  line-height: 1;
  text-decoration: none;
}

.lexicon-letter-nav a:hover {
  color: var(--color-action);
  background: var(--color-action-soft);
}

.lexicon-letter-nav a:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

.lexicon-sections {
  display: grid;
}

.lexicon-section {
  display: grid;
  gap: var(--space-5);
}

.lexicon-section + .lexicon-section {
  margin-top: var(--space-10);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-8);
}

.lexicon-section-title {
  margin: 0;
  color: var(--color-text-strong);
  font-family: var(--font-ui);
  font-size: 1rem;
  line-height: 1.35;
}

.animal-index {
  column-width: 16rem;
  column-gap: var(--space-8);
}

.animal-index-group {
  break-inside: avoid;
  margin: 0 0 var(--space-8);
}

.animal-index-letter {
  margin: 0 0 var(--space-3);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-2);
  color: var(--color-muted);
  font-family: var(--font-ui);
  font-size: 0.92rem;
  line-height: 1.35;
}

.animal-index-list {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.animal-index-link {
  display: inline-block;
  border-radius: var(--radius-control);
  color: var(--color-text-strong);
  font-size: 1.08rem;
  line-height: 1.45;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

.animal-index-name {
  color: var(--color-text-strong);
  font-size: 1.08rem;
  line-height: 1.45;
}

.animal-index-references {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.28rem;
  margin-left: var(--space-1);
  vertical-align: baseline;
}

.animal-index-reference {
  border-radius: var(--radius-control);
  color: var(--color-action);
  font-family: var(--font-ui);
  font-size: 0.92rem;
  line-height: 1.45;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

.animal-index-link:hover,
.animal-index-reference:hover {
  color: var(--color-action);
}

.animal-index-link:focus-visible,
.animal-index-reference:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
}

.error-page p {
  margin: 0;
  color: var(--color-muted);
  font-size: 1.1rem;
  line-height: 1.55;
}

.error-page .nav-link-button {
  justify-self: start;
  margin-top: var(--space-2);
}

.request-id {
  margin-top: var(--space-8);
  color: var(--color-muted);
  font-family: var(--font-ui);
  font-size: 0.85rem;
}

@media (max-width: 760px) {
  .container {
    width: min(100% - 1.5rem, var(--measure-page));
  }

  .page-shell {
    padding: var(--space-8) 0 var(--space-12);
  }

  .entry-page {
    gap: var(--space-8);
  }

  .entry-layout,
  .entry-main {
    gap: var(--space-8);
  }

  .entry-layout,
  .entry-layout--with-related {
    grid-template-columns: 1fr;
  }

  .entry-header {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .entry-date {
    max-width: none;
    text-align: left;
  }

  .entry-header-actions {
    justify-items: start;
  }

  .entry-text {
    font-size: 1.28rem;
    line-height: 1.62;
  }

  .related-animals {
    border-left: 0;
    border-top: 1px solid var(--color-border);
    padding-left: 0;
    padding-top: var(--space-6);
  }

  .site-brand__logo {
    width: 3rem;
    height: 3rem;
  }

  .site-banner img {
    height: clamp(6rem, 28vw, 8rem);
  }

  .entry-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
  }

  .entry-navigation .jump-form,
  .entry-navigation .random-form {
    grid-column: 1 / -1;
  }

  .entry-navigation .jump-form {
    order: 3;
  }

  .entry-navigation .random-form {
    order: 4;
  }

  .entry-navigation > :last-child {
    margin-left: 0;
    justify-self: stretch;
  }

  .lexicon-header {
    align-items: start;
  }

  .lexicon-header .nav-link-button {
    justify-self: stretch;
  }

  .animal-index {
    columns: auto;
  }

  .lexicon-layout {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .lexicon-letter-nav {
    position: static;
    border-left: 0;
    border-bottom: 1px solid var(--color-border);
    padding-left: 0;
    padding-bottom: var(--space-4);
  }

  .lexicon-letter-nav__section {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: start;
  }

  .lexicon-letter-nav__title {
    min-width: 4.75rem;
    padding-top: 0.5rem;
    writing-mode: initial;
  }

  .lexicon-letter-nav__list {
    display: flex;
    flex-wrap: wrap;
  }

  .nav-link-button,
  .action-button {
    width: 100%;
  }

  .entry-actions {
    align-items: stretch;
  }

  .jump-form {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
  }

  .jump-form input {
    width: 100%;
  }
}

@media (max-width: 420px) {
  .entry-actions,
  .jump-form,
  .random-form {
    display: grid;
    grid-template-columns: 1fr;
  }

  .entry-actions > *,
  .jump-form > *,
  .random-form > * {
    width: 100%;
  }
}

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

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