/* Shared Guides presentation layered on the public website system. */
.guides-hero {
  padding-block: var(--space-16) var(--space-12);
  background:
    linear-gradient(135deg, rgba(4, 19, 27, 0.97), rgba(11, 73, 92, 0.92)),
    var(--color-navy-900);
  color: rgba(255, 255, 255, 0.8);
}

.guides-hero h1 {
  max-width: 48rem;
  margin-bottom: var(--space-5);
  color: var(--color-white);
}

.guides-hero__description {
  max-width: 42rem;
  margin-bottom: 0;
  font-size: 1.08rem;
}

.guides-library {
  min-height: 0;
}

.guides-library .section-heading {
  margin-bottom: var(--space-8);
}

.guides-library .section-heading h2 {
  margin-bottom: 0;
}

.guide-page {
  width: 100%;
  margin: 0;
  padding: 0;
}

.guide-page > article {
  width: min(100% - 2rem, var(--container-width));
  margin-inline: auto;
  padding-block: var(--space-12) var(--space-16);
  min-width: 0;
}

.aquarium-tools-page > article {
  max-width: 60rem;
}

.guide-reader-paths {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr));
  gap: var(--space-6);
  margin-block: var(--space-8);
}

.aquarium-tools-page .guide-overview {
  max-width: 48rem;
  line-height: 1.65;
}

.aquarium-tools-index {
  margin-top: var(--space-8);
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-mist);
}

.aquarium-tool {
  display: flow-root;
  margin-top: var(--space-12);
  padding: clamp(var(--space-6), 3vw, var(--space-8));
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-ocean-700);
  border-radius: var(--radius-medium);
  background: linear-gradient(145deg, var(--color-white), #fbfcfd);
  box-shadow: var(--shadow-small);
}

.aquarium-tools-index h2,
.guide-page.aquarium-tools-page > article > .aquarium-tool .aquarium-tool__header h2 {
  margin: 0 0 var(--space-4);
  color: var(--color-navy-900);
  font-size: clamp(1.35rem, 2.3vw, 1.65rem);
  line-height: 1.3;
  text-wrap: balance;
}

.aquarium-tool__header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: var(--space-4) var(--space-6);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.aquarium-tool__header > div:first-child {
  min-width: 0;
}

.aquarium-tool__header > div:first-child > p {
  max-width: 68ch;
  margin: 0;
  color: var(--color-slate-700);
  line-height: 1.6;
}

.aquarium-tools-index ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr));
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.aquarium-tools-index a {
  display: grid;
  height: 100%;
  gap: var(--space-2);
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-white);
  color: var(--color-slate-800);
  text-decoration: none;
}

.aquarium-tools-index a:hover {
  border-color: var(--color-ocean-700);
  box-shadow: var(--shadow-small);
}

.aquarium-tools-index a strong {
  color: var(--color-navy-900);
  font-size: 1rem;
}

.aquarium-tools-index a span {
  color: var(--color-slate-700);
  font-size: 0.9rem;
  line-height: 1.45;
}

.aquarium-tool > p:not(.aquarium-tool__note, .aquarium-tool__error) {
  max-width: 72ch;
  margin: 0 0 var(--space-4);
  line-height: 1.6;
}

.aquarium-tool__example {
  max-width: 72ch;
  margin: 0 0 var(--space-5);
  padding: var(--space-4) var(--space-5);
  border: 1px solid rgba(11, 105, 120, 0.18);
  border-left: 3px solid var(--color-ocean-700);
  border-radius: var(--radius-small);
  background: var(--color-mist);
}

.aquarium-tool__example h3 {
  margin: 0 0 var(--space-2);
  color: var(--color-navy-900);
  font-size: 1rem;
}

.aquarium-tool__example p {
  margin: 0;
  color: var(--color-slate-700);
  line-height: 1.6;
}

.aquarium-tool__form {
  display: grid;
  gap: var(--space-5);
  margin-top: var(--space-5);
}

.aquarium-tool__fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4) var(--space-6);
  min-width: 0;
}

.aquarium-tool__fields--compact {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.aquarium-tool__form label {
  display: grid;
  gap: var(--space-2);
  min-width: 0;
  max-width: 25rem;
  color: var(--color-slate-800);
  font-size: 0.98rem;
  font-weight: 700;
}

.aquarium-tool__form label span {
  color: var(--color-slate-700);
  font-size: 0.875rem;
  font-weight: 400;
  line-height: 1.5;
}

.aquarium-tool__form input,
.aquarium-tool__form select {
  box-sizing: border-box;
  width: 100%;
  min-width: 0;
  min-height: 2.75rem;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-white);
  color: var(--color-slate-900);
  font: inherit;
  font-weight: 400;
}

.aquarium-tool__form input[aria-invalid="true"] {
  border-color: var(--color-error);
}

.aquarium-tool__form :is(input, select):invalid:not([aria-invalid="true"]) {
  border-color: var(--color-border);
}

.aquarium-tool__field-error {
  color: var(--color-error);
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.4;
}

.aquarium-tool :is(button, a, summary):focus-visible,
.aquarium-tool__form :is(input, select):focus-visible,
.aquarium-tools-index a:focus-visible {
  outline: 3px solid var(--color-ocean-700);
  outline-offset: 3px;
}

.aquarium-tool__form fieldset {
  display: grid;
  gap: var(--space-4);
  min-width: 0;
  margin: 0;
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
}

.aquarium-tool__form legend {
  padding-inline: var(--space-2);
  color: var(--color-navy-900);
  font-weight: 800;
}

.aquarium-tool__form fieldset > p {
  max-width: 72ch;
  margin: 0;
  line-height: 1.6;
}

.aquarium-tool__form legend {
  font-size: 1rem;
}

.aquarium-tool__advanced summary {
  min-height: 2.75rem;
  padding: var(--space-2) 0;
  color: var(--color-navy-900);
  font-weight: 800;
  cursor: pointer;
}

.aquarium-tool__details {
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: #fbfcfd;
}

.aquarium-tool__details summary {
  min-height: 2.75rem;
  padding-block: var(--space-2);
  color: var(--color-navy-900);
  font-weight: 700;
  cursor: pointer;
}

.aquarium-tool__details .aquarium-tool__note {
  margin-bottom: 0;
}

.aquarium-tool__advanced .aquarium-tool__fields {
  padding-top: var(--space-3);
}

.aquarium-tool__curve-points {
  display: grid;
  gap: var(--space-3);
}

.aquarium-tool__curve-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: end;
  gap: var(--space-3);
  min-width: 0;
}

.aquarium-tool__curve-row--removable {
  grid-template-columns: repeat(2, minmax(0, 1fr)) auto;
}

.aquarium-tool__form .button {
  justify-self: start;
  min-height: 2.75rem;
  max-width: 100%;
  cursor: pointer;
}

.aquarium-tool__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.aquarium-tool__form .button:disabled {
  cursor: not-allowed;
  opacity: 0.65;
}

.aquarium-tool__error {
  margin: var(--space-4) 0 0;
  padding: var(--space-3) var(--space-4);
  border-left: 4px solid var(--color-error);
  background: #fff5f3;
  color: var(--color-slate-900);
}

.aquarium-tool__result {
  margin-top: var(--space-5);
  padding: var(--space-4);
  border-left: 4px solid var(--color-ocean-700);
  background: var(--color-mist);
}

.aquarium-tool__primary {
  margin: 0 0 var(--space-4);
  color: var(--color-navy-900);
  font-size: clamp(1.15rem, 2.5vw, 1.5rem);
  font-weight: 800;
  line-height: 1.35;
}

.aquarium-tool__result h3 {
  margin: 0 0 var(--space-3);
  color: var(--color-navy-900);
  font-size: 1.15rem;
}

.aquarium-tool__result dl {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(8rem, auto);
  gap: var(--space-2) var(--space-5);
  margin: 0;
}

.aquarium-tool__result dt {
  color: var(--color-slate-800);
}

.aquarium-tool__result dd {
  margin: 0;
  color: var(--color-navy-900);
  font-weight: 800;
  text-align: right;
}

.aquarium-tool__form-status {
  min-height: 1.5em;
  margin: 0;
  color: var(--color-slate-700);
  font-size: 0.9rem;
}

.aquarium-tool__share {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-3);
  margin: 0;
}

.aquarium-tool__share .button {
  min-height: 2.75rem;
}

.aquarium-tool__share p {
  flex-basis: 100%;
  margin: 0;
  color: var(--color-slate-700);
  font-size: 0.9rem;
}

.aquarium-tool__share input {
  width: min(100%, 36rem);
  min-height: 2.75rem;
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-white);
  color: var(--color-slate-900);
  font: inherit;
}

.aquarium-tool__note {
  max-width: 72ch;
  margin: var(--space-5) 0 0;
  padding: var(--space-4);
  border-left: 3px solid var(--color-ocean-700);
  background: var(--color-mist);
  color: var(--color-slate-700);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.aquarium-tool__details {
  max-width: 72ch;
}

.aquarium-tool__details > p {
  line-height: 1.6;
}

.aquarium-tools-discovery {
  padding-block: var(--space-8);
  background: var(--color-mist);
}

.aquarium-tools-discovery__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.aquarium-tools-discovery__content p {
  max-width: 46rem;
  margin: 0;
}

.guide-tool-callout {
  margin-block: var(--space-5);
  padding: var(--space-3) var(--space-4);
  border-left: 3px solid var(--color-ocean-600);
  background: var(--color-mist);
  font-size: 1rem;
  line-height: 1.55;
}

.guide-page[data-static-guide] .guide-content .guide-tool-callout > p {
  margin: 0;
}

.guide-header,
.guide-content,
.guide-on-this-page,
.guide-faq,
.guide-sources,
.guide-related,
.guide-parent-navigation,
.guide-authorship {
  max-width: 50rem;
}

.guide-page[data-static-guide] > article {
  width: min(100% - 2rem, 60rem);
  overflow-wrap: anywhere;
}

.guide-page[data-static-guide] :is(.guide-header, .guide-quick-reference, .guide-takeaways, .guide-content, .guide-on-this-page, .guide-faq, .guide-sources, .guide-related, .guide-parent-navigation, .guide-authorship) {
  width: 100%;
  max-width: none;
  min-width: 0;
}

.guide-header {
  margin-bottom: var(--space-8);
}

.guide-header h1 {
  margin-bottom: var(--space-4);
}

.guide-intro-row {
  display: grid;
  gap: var(--space-6);
  margin-bottom: var(--space-10);
}

.guide-intro-row .guide-overview {
  align-self: start;
  max-width: none;
  margin: 0;
  font-size: 1.08rem;
  line-height: 1.75;
}

.guide-intro-row--with-image {
  margin-bottom: 0;
  min-width: 0;
}

.guide-page[data-static-guide]:has(.guide-primary-image) .guide-header {
  margin-bottom: var(--space-5);
}

.guide-page[data-static-guide]:has(.guide-primary-image) .guide-header > :last-child {
  margin-bottom: 0;
}

.guide-intro-row--with-image .guide-primary-image {
  margin: 0;
  justify-self: start;
}

.guide-category-library {
  padding-block: 0;
}

.guide-header__scientific-name {
  margin-bottom: var(--space-5);
  color: var(--color-slate-500);
  font-style: italic;
}

.guides-controls {
  position: relative;
  z-index: 2;
  max-width: 48rem;
  margin-bottom: var(--space-8);
}

.guides-search {
  position: relative;
}

.guides-search input {
  width: 100%;
  min-height: 3.75rem;
  padding-inline: var(--space-5);
  border-color: var(--color-slate-300);
  border-radius: var(--radius-medium);
  background: var(--color-white);
  box-shadow: var(--shadow-small);
  font-size: 1rem;
}

.guides-search input:focus-visible {
  border-color: var(--color-ocean-700);
  outline: 3px solid var(--color-ocean-700);
  outline-offset: 2px;
  box-shadow: var(--shadow-small);
}

.guide-suggestions {
  position: fixed;
  z-index: 1000;
  overflow-y: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-white);
  box-shadow: var(--shadow-large);
}

.guide-suggestion {
  display: grid;
  gap: 0.15rem;
  padding: 0.8rem var(--space-5);
  border-left: 4px solid transparent;
  color: var(--color-slate-800);
  text-decoration: none;
}

.guide-suggestion + .guide-suggestion {
  border-top: 1px solid var(--color-border);
}

.guide-suggestion:hover,
.guide-suggestion.is-active {
  border-left-color: var(--color-ocean-700);
  background: var(--color-mist);
  color: var(--color-navy-900);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.18em;
}

.guide-suggestion:focus-visible {
  position: relative;
  outline: 3px solid var(--color-ocean-700);
  outline-offset: -3px;
}

.guide-suggestion__title {
  font-weight: 800;
}

.guide-suggestion__category {
  color: var(--color-slate-500);
  font-size: 0.82rem;
}

.guide-suggestions__empty {
  margin: 0;
  padding: var(--space-4) var(--space-5);
  color: var(--color-slate-600);
  font-size: 0.9rem;
}

.guide-status {
  margin-block: var(--space-8);
  color: var(--color-slate-700);
}

.guide-card-grid {
  display: grid;
  gap: var(--space-4);
}

.guide-related .guide-card-grid {
  grid-template-columns: minmax(0, 1fr);
}

.guide-related .guide-card:nth-child(n + 3) {
  display: none;
}

.guide-related .guide-card {
  min-width: 0;
  min-height: 0;
  padding: var(--space-4);
}

.guide-related .guide-card h3 {
  font-size: 1.25rem;
  line-height: 1.25;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.guide-related .guide-card .guide-card__type {
  font-size: 0.875rem;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.guide-related .guide-card__link {
  overflow-wrap: anywhere;
}

.guide-related .guide-card .guide-card__preview {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
  font-size: 0.9375rem;
  line-height: 1.5;
}

.guide-related .guide-card__link:focus-visible,
.guide-fact a:focus-visible {
  outline: 3px solid var(--color-ocean-700);
  outline-offset: 3px;
}

.guide-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-white);
  box-shadow: var(--shadow-small);
}

.guide-category-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: linear-gradient(145deg, var(--color-white), var(--color-mist));
  box-shadow: var(--shadow-small);
}

.guide-category-card h3 {
  margin-bottom: var(--space-3);
  font-size: 1.5rem;
}

.guide-category-card p:not(.guide-card__type) {
  color: var(--color-slate-700);
}

.guide-category-card .guide-card__link {
  margin-top: auto;
}

.guide-card__type {
  margin-bottom: var(--space-3);
  color: var(--color-ocean-700);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.guide-card h3 {
  margin-bottom: var(--space-3);
  font-size: 1.45rem;
}

.guide-card p {
  color: var(--color-slate-700);
  font-size: 0.94rem;
}

.guide-card__link {
  margin-top: auto;
  color: var(--color-ocean-700);
  font-weight: 800;
  text-decoration: none;
}

.guide-card__link:hover {
  color: var(--color-navy-900);
  text-decoration: underline;
}

.guide-card h3 .guide-card__link {
  margin-top: 0;
  font: inherit;
}

.guide-card__link:focus-visible {
  outline: 3px solid var(--color-ocean-700);
  outline-offset: 3px;
}

.guide-framework-note {
  border-top: 1px solid rgba(203, 216, 217, 0.7);
}

.guide-breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  color: var(--color-slate-500);
  font-size: 0.86rem;
}

.guide-breadcrumbs a {
  color: var(--color-ocean-700);
  font-weight: 700;
}

.guide-supporting-image {
  /* Table captions wrap to the photo's width without widening the figure. */
  display: table;
  width: auto;
  max-width: 100%;
  margin: 0 auto;
  background: transparent;
}

.guide-primary-image picture,
.guide-supporting-image picture {
  display: block;
}

.guide-primary-image {
  display: block;
  width: min(100%, 30rem);
  max-width: 100%;
  margin: 0 auto;
}

.guide-primary-image picture {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius-medium);
  background: var(--color-mist);
}

.guide-primary-image img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  object-fit: cover;
}

.guide-primary-image[data-image-fit="contain"] img {
  object-fit: contain;
}

.guide-primary-image figcaption {
  display: block;
}

.guide-supporting-image img {
  display: block;
  width: auto;
  max-width: min(32.5rem, calc(100vw - 2rem));
  max-height: 20rem;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-medium);
}

.guide-supporting-image {
  margin: var(--space-6) auto;
}

.guide-supporting-image figcaption {
  display: table-caption;
  caption-side: bottom;
  padding: var(--space-2) 0 0;
  color: var(--color-slate-600);
  font-size: 0.875rem;
  line-height: 1.5;
}

.guide-primary-image figcaption {
  padding: var(--space-2) 0 0;
  color: var(--color-slate-600);
  font-size: 0.875rem;
  line-height: 1.5;
}

.guide-page[data-static-guide] > article > .guide-primary-image {
  margin: var(--space-8) auto 0;
}

.guide-page[data-static-guide] .guide-image-note {
  margin: var(--space-4) 0 0;
  line-height: 1.65;
}

.guide-page[data-static-guide] .guide-content .guide-supporting-image:has(+ .guide-image-note) {
  margin-bottom: 0;
}

.guide-page[data-static-guide] .guide-content .guide-image-note {
  margin: var(--space-4) 0;
}

.guide-image-placeholder {
  display: grid;
  width: 100%;
  height: 100%;
  min-height: 14rem;
  place-items: center;
  color: var(--color-slate-500);
  font-size: 0.86rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.guide-content section + section {
  margin-top: var(--space-10);
}

.guide-content section,
.guide-fact-detail,
.aquarium-tool {
  scroll-margin-top: 7rem;
}

.guide-content {
  font-size: 1.125rem;
  line-height: 1.65;
}

.guide-content p,
.guide-content ul,
.guide-content ol {
  max-width: none;
}

.guide-content,
.guide-sources {
  overflow-wrap: anywhere;
}

.guide-content h2 {
  margin-bottom: var(--space-4);
  font-size: clamp(1.75rem, 4vw, 2.55rem);
}

.aquarium-tools-discovery__content {
  align-items: flex-start;
  flex-direction: column;
}

@media (max-width: 599px) {
  .aquarium-tools-index,
  .aquarium-tool {
    padding: var(--space-4);
  }

  .aquarium-tool {
    padding: 1.125rem;
    margin-top: var(--space-6);
  }

  .aquarium-tool__header {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-3);
  }

  .aquarium-tool__header h2 {
    margin-bottom: var(--space-2);
  }

  .aquarium-tool__example {
    padding: var(--space-3) var(--space-4);
  }

  .aquarium-tool__fields,
  .aquarium-tool__fields--compact {
    grid-template-columns: minmax(0, 1fr);
  }

  .aquarium-tool__form label {
    max-width: none;
  }

  .aquarium-tool__curve-row--removable {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .aquarium-tool__curve-row button {
    grid-column: 1 / -1;
    justify-self: start;
  }

  .aquarium-tool__result dl {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-1);
  }

  .aquarium-tool__result dd {
    margin-bottom: var(--space-3);
    text-align: left;
  }
}

.guide-facts {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: stretch;
  gap: var(--space-4);
}

.guide-problem-identity {
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-mist);
  scroll-margin-top: 7rem;
}

.guide-problem-identity dl {
  display: grid;
  gap: var(--space-3);
  margin: 0;
  font-size: 1rem;
  line-height: 1.5;
}

.guide-problem-identity dl > div {
  min-width: 0;
}

.guide-problem-identity dt {
  color: var(--color-slate-500);
  font-size: 0.875rem;
  font-weight: 700;
}

.guide-problem-identity dd {
  margin: var(--space-1) 0 0;
  overflow-wrap: anywhere;
}

.guide-problem-identity dd a {
  white-space: nowrap;
  font-size: 0.875rem;
}

[id^="identity-"] {
  scroll-margin-top: 7rem;
}

@media (min-width: 600px) {
  .guide-problem-identity dl {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--space-6);
  }
}

.guide-fact {
  min-width: 0;
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-white);
  box-shadow: var(--shadow-small);
}

.guide-fact dt {
  color: var(--color-slate-500);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
  overflow-wrap: break-word;
}

.guide-fact dd {
  margin: var(--space-1) 0 0;
  color: var(--color-slate-900);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.guide-fact__detail {
  display: block;
  margin-top: var(--space-2);
  font-weight: 400;
}

.guide-quick-reference__note {
  margin: var(--space-4) 0 0;
  padding: var(--space-3) var(--space-4);
  border-left: 4px solid var(--color-ocean-700);
  border-radius: var(--radius-small);
  background: var(--color-mist);
  font-size: 0.9375rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.guide-on-this-page {
  margin-top: var(--space-10);
  margin-bottom: var(--space-12);
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-mist);
}

.guide-on-this-page ul {
  display: grid;
  gap: var(--space-2);
  margin: 0;
}

.guide-takeaways,
.guide-faq {
  margin-top: var(--space-10);
  margin-bottom: var(--space-10);
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-mist);
}

.guide-takeaways h2,
.guide-faq h2,
.guide-page > article > section > h2 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
}

.guide-page article .guide-takeaways h2 {
  font-size: clamp(2.5rem, 4vw, 3rem);
}

.guide-takeaways ul {
  margin-bottom: 0;
}

.guide-faq details {
  padding-block: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.guide-faq details:first-of-type {
  border-top: 0;
}

.guide-faq summary {
  color: var(--color-navy-900);
  font-weight: 800;
  cursor: pointer;
}

.guide-parent-navigation {
  margin-top: var(--space-8);
  margin-bottom: 0;
}

.guide-authorship {
  border-top: 1px solid var(--color-border);
  color: var(--color-slate-700);
  font-size: 0.9375rem;
  line-height: 1.6;
  padding-top: var(--space-4);
}

.guide-sources,
.guide-related {
  margin-top: var(--space-10);
  margin-bottom: var(--space-10);
}

.guide-sources li span {
  color: var(--color-slate-500);
}

.guide-sources .guide-source-evidence {
  margin-top: var(--space-2);
  color: var(--color-slate-700);
  font-size: 0.9375rem;
}

.guide-sources li + li {
  margin-top: var(--space-4);
}

.guide-editorial-approach > article {
  max-width: 60rem;
}

.guide-page[data-static-guide] .guide-overview {
  max-width: none;
}

.guide-page[data-static-guide] > article > :is(.guide-quick-reference, .guide-takeaways, .guide-on-this-page, .guide-content, .guide-faq, .guide-sources, .guide-related, .guide-parent-navigation, .guide-authorship) {
  margin-block: var(--space-10) 0;
}

.guide-page[data-static-guide] > article > .guide-authorship {
  margin-top: var(--space-6);
}

.guide-page[data-static-guide] > article > .guide-problem-identity {
  margin-block: var(--space-6) 0;
}

.guide-page[data-static-guide] .guide-problem-identity > h2 {
  margin: 0 0 var(--space-3);
  font-size: 1.25rem;
  line-height: 1.25;
}

.guide-page[data-static-guide] :is(.guide-takeaways, .guide-on-this-page, .guide-faq) {
  padding: var(--space-4);
}

.guide-page[data-static-guide] :is(.guide-quick-reference, .guide-takeaways, .guide-on-this-page, .guide-faq, .guide-sources, .guide-related, .guide-content section) > h2 {
  margin: 0 0 var(--space-4);
  font-size: 1.75rem;
  line-height: 1.25;
}

.guide-page[data-static-guide] .guide-content h3 {
  margin: var(--space-6) 0 var(--space-3);
}

.guide-page[data-static-guide] .guide-content h2 + h3 {
  margin-top: 0;
}

.guide-page[data-static-guide] :is(.guide-content, .guide-takeaways, .guide-faq) {
  font-size: 1.125rem;
  line-height: 1.65;
}

.guide-page[data-static-guide] :is(.guide-content, .guide-takeaways, .guide-faq, .guide-sources) :is(p, ul, ol) {
  max-width: none;
  margin: 0 0 var(--space-4);
}

.guide-page[data-static-guide] > article > .guide-authorship > p {
  margin: 0;
}

.guide-page[data-static-guide] :is(.guide-content section, .guide-takeaways, .guide-faq details, .guide-sources) > :last-child,
.guide-page[data-static-guide] .guide-on-this-page :is(ul, ol) {
  margin-bottom: 0;
}

.guide-faq summary:focus-visible {
  outline: 3px solid var(--color-ocean-700);
  outline-offset: 3px;
}

@media (min-width: 600px) {
  .guides-hero {
    padding-block: var(--space-20) var(--space-16);
  }

  .guide-card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .guide-related .guide-card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .guide-related .guide-card:nth-child(n + 3) {
    display: flex;
  }

  .guide-page {
    width: 100%;
    padding: 0;
  }

  .guide-page > article {
    width: min(100% - 3rem, var(--container-width));
    padding-block: var(--space-16) var(--space-20);
  }

  .guide-page[data-static-guide] > article {
    width: min(100% - 3rem, 60rem);
  }

  .guide-supporting-image img {
    max-width: min(32.5rem, calc(100vw - 3rem));
  }

  .guide-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .guide-page[data-static-guide] :is(.guide-takeaways, .guide-on-this-page, .guide-faq) {
    padding: var(--space-6);
  }

}

@media (min-width: 900px) {
  .guides-hero {
    padding-block: var(--space-24) var(--space-20);
  }

  .guides-library .section-heading {
    align-items: center;
  }

  .guide-card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

}

@media (min-width: 1024px) {
  .guide-intro-row--with-image {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    grid-template-rows: auto auto;
    gap: 0 var(--space-8);
  }

  .guide-intro-row--with-image .guide-overview {
    grid-column: 1;
    grid-row: 1;
    align-self: center;
  }

  .guide-intro-row--with-image .guide-primary-image {
    /* Share the image row so the credit does not shift the text's center. */
    display: grid;
    grid-template-rows: subgrid;
    grid-column: 2;
    grid-row: 1 / span 2;
    width: 100%;
    min-width: 0;
    justify-self: stretch;
  }

  .guide-intro-row--with-image .guide-primary-image picture {
    align-self: center;
  }

  .guide-related .guide-card-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1200px) {
  .guide-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}