/* Hallmark · macrostructure: Long Document · tone: calm clinical editorial · anchor hue: medicinal green */
@import url("tokens.css");

html,
body {
  overflow-x: clip;
}

html {
  scroll-behavior: smooth;
  background: var(--color-paper);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 20rem;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.72;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--color-accent);
  text-decoration-thickness: var(--rule-thin);
  text-underline-offset: 0.2em;
}

a:hover {
  text-decoration-thickness: var(--rule-bold);
}

a:active {
  color: var(--color-ink);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: var(--rule-bold) solid var(--color-focus);
  outline-offset: var(--space-3xs);
}

button:active,
summary:active {
  transform: translateY(1px);
}

button:disabled,
[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.5;
}

.skip-link {
  position: fixed;
  inset-block-start: var(--space-sm);
  inset-inline-start: var(--space-sm);
  z-index: 600;
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-accent);
  color: var(--color-accent-ink);
  font-weight: 700;
  transform: translateY(-220%);
}

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

.mobile-bar {
  position: sticky;
  inset-block-start: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xs);
  min-height: 3.5rem;
  padding: var(--space-xs) var(--space-sm);
  border-block-end: var(--rule-thin) solid var(--color-rule);
  background: var(--color-paper);
}

.mobile-bar__title {
  min-width: 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 700;
  line-height: 1.15;
  text-decoration: none;
  white-space: nowrap;
}

.mobile-menu {
  position: relative;
}

.mobile-menu summary {
  display: grid;
  min-width: 2.75rem;
  min-height: 2.75rem;
  place-items: center;
  border: var(--rule-thin) solid var(--color-rule);
  border-radius: var(--radius-control);
  color: var(--color-ink);
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}

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

.mobile-menu__panel {
  position: absolute;
  inset-block-start: calc(100% + var(--space-xs));
  inset-inline-end: 0;
  width: 18rem;
  max-width: calc(100dvw - var(--space-lg));
  padding: var(--space-sm);
  border: var(--rule-thin) solid var(--color-rule);
  border-radius: var(--radius-card);
  background: var(--color-paper-2);
  box-shadow: 0 var(--space-xs) var(--space-lg) var(--color-shadow);
}

.mobile-menu__panel a,
.mobile-menu__panel button {
  display: flex;
  align-items: center;
  min-height: 2.75rem;
  white-space: nowrap;
}

.mobile-menu__panel a {
  color: var(--color-ink);
  text-decoration: none;
}

.mobile-menu__panel button {
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--color-ink);
  font: inherit;
  cursor: pointer;
}

.nav-rail {
  display: none;
}

.page-shell {
  width: min(100% - var(--space-lg), 74rem);
  margin-inline: auto;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs);
  align-items: center;
  padding-block: var(--space-md);
  border-block-end: var(--rule-thin) solid var(--color-rule);
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.breadcrumb a {
  white-space: nowrap;
}

main[data-kb-content] {
  padding-block: var(--space-xl) var(--space-3xl);
}

.article-header {
  max-width: 56rem;
  padding-block-end: var(--space-2xl);
}

.article-header h1,
.article-header p,
.prose h2,
.prose h3,
.prose p,
.prose ul,
.prose ol,
.prose dl,
.prose figure,
.prose blockquote,
.prose table,
.prose .note,
.prose .safety-note,
.prose .source-list {
  max-width: 65ch;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-style: normal;
  overflow-wrap: anywhere;
  min-width: 0;
}

h1 {
  max-width: 13ch;
  font-size: var(--text-display-s);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.05;
}

.article-header__lede {
  margin: var(--space-md) 0 0;
  color: var(--color-ink-2);
  font-family: var(--font-display);
  font-size: var(--text-md);
  line-height: 1.55;
}

.article-header__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs) var(--space-md);
  margin-block-start: var(--space-lg);
  color: var(--color-muted);
  font-family: var(--font-outlier);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
}

.prose {
  max-width: 68rem;
}

.prose > section {
  padding-block: var(--space-xl);
  border-block-start: var(--rule-thin) solid var(--color-rule);
}

.prose > section:first-of-type {
  padding-block-start: 0;
  border-block-start: 0;
}

.prose h2 {
  margin-block-end: var(--space-md);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.18;
}

.prose h3 {
  margin-block: var(--space-lg) var(--space-xs);
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: 1.25;
}

.prose p {
  margin-block: 0 var(--space-md);
}

.prose ul,
.prose ol {
  margin-block: var(--space-sm) var(--space-lg);
  padding-inline-start: var(--space-lg);
}

.prose li + li {
  margin-block-start: var(--space-xs);
}

dfn {
  color: var(--color-accent);
  font-style: normal;
  font-weight: 700;
}

.note,
.safety-note {
  margin-block: var(--space-lg);
  padding: var(--space-md);
  border-inline-start: var(--rule-bold) solid var(--color-accent);
  background: var(--color-accent-soft);
  color: var(--color-ink);
}

.safety-note {
  border-inline-start-color: var(--color-alert);
  background: var(--color-alert-soft);
}

.note strong,
.safety-note strong {
  display: block;
  margin-block-end: var(--space-2xs);
}

.record {
  max-width: 65ch;
  margin-block: var(--space-lg);
  border-block: var(--rule-thin) solid var(--color-rule);
}

.record__row {
  display: grid;
  grid-template-columns: minmax(6rem, 0.34fr) minmax(0, 1fr);
  gap: var(--space-sm);
  padding-block: var(--space-sm);
  border-block-end: var(--rule-thin) solid var(--color-rule);
}

.record__row:last-child {
  border-block-end: 0;
}

.record dt {
  color: var(--color-muted);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 700;
}

.record dd {
  margin: 0;
}

.timeline {
  position: relative;
  max-width: 65ch;
  margin-block: var(--space-xl);
  padding-inline-start: var(--space-lg);
}

.timeline::before {
  position: absolute;
  inset-block: 0;
  inset-inline-start: var(--space-2xs);
  width: var(--rule-bold);
  background: var(--color-rule);
  content: "";
}

.timeline__item {
  position: relative;
  padding-block-end: var(--space-lg);
}

.timeline__item::before {
  position: absolute;
  inset-block-start: 0.6em;
  inset-inline-start: calc(-1 * var(--space-lg) + var(--space-3xs));
  width: var(--space-xs);
  height: var(--space-xs);
  border: var(--rule-bold) solid var(--color-accent);
  border-radius: 50%;
  background: var(--color-paper);
  content: "";
}

.timeline__item h3 {
  margin: 0 0 var(--space-2xs);
  font-family: var(--font-body);
  font-size: var(--text-base);
}

.timeline__item p {
  margin: 0;
  color: var(--color-ink-2);
}

.comparison {
  width: 100%;
  margin-block: var(--space-lg);
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.comparison caption {
  padding-block-end: var(--space-xs);
  color: var(--color-muted);
  text-align: start;
}

.comparison th,
.comparison td {
  padding: var(--space-sm);
  border-block-end: var(--rule-thin) solid var(--color-rule);
  text-align: start;
  vertical-align: top;
}

.comparison th {
  color: var(--color-ink);
  font-weight: 700;
}

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

.source-list li {
  padding-block: var(--space-lg);
  border-block-start: var(--rule-thin) solid var(--color-rule);
}

.source-list h2 {
  margin-block-end: var(--space-xs);
  font-size: var(--text-lg);
}

.source-list p {
  margin-block-end: var(--space-xs);
}

.chapter-nav {
  display: grid;
  gap: var(--space-sm);
  max-width: 65ch;
  margin-block-start: var(--space-2xl);
  padding-block-start: var(--space-lg);
  border-block-start: var(--rule-bold) solid var(--color-ink);
}

.chapter-nav a {
  display: block;
  min-height: 2.75rem;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 700;
  line-height: 2.75rem;
  text-decoration: none;
  white-space: nowrap;
}

.chapter-nav a:last-child {
  color: var(--color-accent);
  text-align: end;
}

.foot-dense {
  padding-block: var(--space-lg) var(--space-xl);
  border-block-start: var(--rule-thin) solid var(--color-rule);
  color: var(--color-muted);
  font-family: var(--font-outlier);
  font-size: var(--text-xs);
  line-height: 1.7;
}

.foot-dense p {
  max-width: 90ch;
  margin: 0;
}

.foot-dense a {
  white-space: nowrap;
}

.theme-toggle[disabled] {
  cursor: not-allowed;
  opacity: 0.5;
}

.theme-toggle[aria-busy="true"] {
  cursor: wait;
}

.theme-toggle[data-state="error"] {
  color: var(--color-alert);
}

.theme-toggle[data-state="success"]::after {
  margin-inline-start: var(--space-2xs);
  content: "✓";
}

@media (max-width: 24rem) {
  .mobile-bar__title {
    max-width: 11rem;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .record__row {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-2xs);
  }

  .comparison,
  .comparison tbody,
  .comparison tr,
  .comparison th,
  .comparison td {
    display: block;
  }

  .comparison thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
  }

  .comparison tr {
    padding-block: var(--space-sm);
    border-block-end: var(--rule-thin) solid var(--color-rule);
  }

  .comparison td {
    padding: var(--space-2xs) 0;
    border: 0;
  }

  .comparison td::before {
    display: block;
    color: var(--color-muted);
    content: attr(data-label);
    font-family: var(--font-body);
    font-size: var(--text-xs);
    font-weight: 700;
  }
}

@media (min-width: 40rem) {
  .page-shell {
    width: min(100% - var(--space-2xl), 74rem);
  }

  main[data-kb-content] {
    padding-block-start: var(--space-2xl);
  }

  .article-header {
    padding-block-end: var(--space-3xl);
  }

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

@media (min-width: 60rem) {
  .mobile-bar {
    display: none;
  }

  .nav-rail {
    position: fixed;
    inset-block: 0;
    inset-inline-start: 0;
    z-index: 200;
    display: flex;
    width: 11rem;
    flex-direction: column;
    justify-content: space-between;
    padding: var(--space-lg) var(--space-md);
    border-inline-end: var(--rule-thin) solid var(--color-rule);
    background: var(--color-paper);
  }

  .nav-rail__brand {
    color: var(--color-ink);
    font-family: var(--font-display);
    font-size: var(--text-md);
    font-weight: 700;
    line-height: 1.15;
    text-decoration: none;
  }

  .nav-rail__links {
    display: grid;
    gap: var(--space-2xs);
  }

  .nav-rail__links a,
  .nav-rail__links button {
    min-height: 2.75rem;
    white-space: nowrap;
  }

  .nav-rail__links a {
    display: flex;
    align-items: center;
    color: var(--color-muted);
    text-decoration: none;
  }

  .nav-rail__links a[aria-current="page"] {
    color: var(--color-accent);
    font-weight: 700;
  }

  .nav-rail__links button {
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--color-muted);
    font: inherit;
    text-align: start;
    cursor: pointer;
  }

  .page-shell {
    width: min(calc(100% - 16rem), 74rem);
    margin-inline-start: max(14rem, calc((100% - 74rem + 11rem) / 2));
    margin-inline-end: auto;
  }

  .prose > section:nth-of-type(even) {
    margin-inline-start: min(5vw, 4rem);
  }
}

@media (hover: hover) and (pointer: fine) {
  .mobile-menu summary:hover,
  .nav-rail__links button:hover {
    color: var(--color-accent);
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: var(--dur-micro) !important;
    animation-iteration-count: 1 !important;
    transition-duration: var(--dur-micro) !important;
  }
}

@media print {
  .mobile-bar,
  .nav-rail,
  .skip-link,
  .chapter-nav {
    display: none;
  }

  .page-shell {
    width: auto;
    margin: 0;
  }

  body {
    background: var(--color-paper);
    color: var(--color-ink);
  }
}