:root {
  --color-moonstone: #F4F1EA;
  --color-ivory: #FDFBF7;
  --color-ink-blue: #1C2A3A;
  --color-indigo: #2B1E3A;
  --color-mineral-green: #3A6B5C;
  --color-copper: #B87C4B;
  --color-violet: #6A4C7A;
  --color-stone: #8A8A7A;
  --color-pale-gold: #D4C9A8;

  --color-text: var(--color-ink-blue);
  --color-text-muted: var(--color-stone);
  --color-text-inverse: var(--color-ivory);
  --color-background: var(--color-moonstone);
  --color-surface: var(--color-ivory);
  --color-surface-dark: var(--color-ink-blue);
  --color-surface-deep: var(--color-indigo);
  --color-border: rgba(138, 138, 122, 0.3);
  --color-border-strong: var(--color-stone);
  --color-accent: var(--color-mineral-green);
  --color-accent-hover: #2E574A;
  --color-accent-secondary: var(--color-copper);
  --color-accent-tertiary: var(--color-violet);
  --color-focus: var(--color-pale-gold);

  --font-heading: "Cormorant Garamond", Georgia, serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --text-display: clamp(2.25rem, 5vw, 3.5rem);
  --text-h1: clamp(1.875rem, 3.5vw, 2.5rem);
  --text-h2: clamp(1.5rem, 2.5vw, 2rem);
  --text-h3: clamp(1.25rem, 2vw, 1.5rem);
  --text-h4: 1.25rem;
  --text-body: 1rem;
  --text-small: 0.875rem;
  --text-caption: 0.75rem;

  --leading-display: 1.1;
  --leading-h1: 1.2;
  --leading-h2: 1.25;
  --leading-h3: 1.3;
  --leading-h4: 1.4;
  --leading-body: 1.6;
  --leading-small: 1.5;
  --leading-caption: 1.4;

  --tracking-caption: 0.05em;
  --tracking-label: 0.1em;
  --tracking-button: 0.05em;

  --space-4xs: 4px;
  --space-3xs: 8px;
  --space-2xs: 16px;
  --space-xs: 24px;
  --space-sm: 32px;
  --space-md: 48px;
  --space-lg: 64px;
  --space-xl: 96px;

  --container-wide: 1280px;
  --container-narrow: 720px;
  --container-padding-mobile: 24px;
  --container-padding-tablet: 48px;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-pill: 999px;

  --shadow-card: 0 2px 8px rgba(28, 42, 58, 0.08);
  --shadow-focus: 0 0 0 2px var(--color-focus);

  --border-thin: 1px solid var(--color-border);
  --border-strong: 2px solid var(--color-accent);
  --border-focus: 2px solid var(--color-focus);

  --transition-fast: 150ms ease-out;
  --transition-medium: 300ms ease-out;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--color-text);
  background-color: var(--color-background);
  min-height: 100vh;
  min-width: 320px;
  overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: var(--leading-h1);
  color: var(--color-ink-blue);
  margin-block-end: var(--space-2xs);
}

h1 {
  font-size: var(--text-h1);
  line-height: var(--leading-h1);
}

h2 {
  font-size: var(--text-h2);
  line-height: var(--leading-h2);
  margin-block-start: var(--space-md);
}

h3 {
  font-size: var(--text-h3);
  line-height: var(--leading-h3);
  margin-block-start: var(--space-sm);
}

h4 {
  font-size: var(--text-h4);
  font-family: var(--font-body);
  font-weight: 600;
  line-height: var(--leading-h4);
  margin-block-start: var(--space-xs);
}

h5,
h6 {
  font-size: var(--text-body);
  font-family: var(--font-body);
  font-weight: 600;
  line-height: var(--leading-body);
  margin-block-start: var(--space-2xs);
}

p {
  margin-block-end: var(--space-2xs);
  line-height: var(--leading-body);
}

p:last-child {
  margin-block-end: 0;
}

ul,
ol {
  margin-block-end: var(--space-2xs);
  padding-inline-start: var(--space-xs);
}

ul:last-child,
ol:last-child {
  margin-block-end: 0;
}

li {
  line-height: var(--leading-body);
}

blockquote {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.125rem;
  line-height: 1.5;
  color: var(--color-ink-blue);
  border-inline-start: 2px solid var(--color-copper);
  background-color: rgba(212, 201, 168, 0.2);
  padding: var(--space-2xs);
  margin-block: var(--space-xs);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

blockquote:last-child {
  margin-block-end: 0;
}

a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
}

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: var(--border-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

img,
picture,
svg,
video,
canvas {
  display: block;
  max-width: 100%;
  height: auto;
}

img {
  border-radius: var(--radius-sm);
}

figure {
  margin-block-end: var(--space-2xs);
}

figure:last-child {
  margin-block-end: 0;
}

figcaption {
  font-size: var(--text-caption);
  font-weight: 500;
  letter-spacing: var(--tracking-caption);
  color: var(--color-text-muted);
  margin-block-start: var(--space-3xs);
}

hr {
  border: none;
  border-block-start: 1px solid var(--color-border);
  margin-block: var(--space-md);
}

code,
kbd,
samp,
pre {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.9em;
}

pre {
  background-color: var(--color-surface-dark);
  color: var(--color-text-inverse);
  padding: var(--space-2xs);
  border-radius: var(--radius-sm);
  overflow-x: auto;
  margin-block-end: var(--space-2xs);
}

pre:last-child {
  margin-block-end: 0;
}

code {
  background-color: rgba(28, 42, 58, 0.06);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.875em;
}

pre code {
  background-color: transparent;
  padding: 0;
  border-radius: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-block-end: var(--space-2xs);
  font-size: var(--text-small);
  line-height: var(--leading-small);
}

table:last-child {
  margin-block-end: 0;
}

caption {
  font-size: var(--text-caption);
  font-weight: 500;
  letter-spacing: var(--tracking-caption);
  color: var(--color-text-muted);
  text-align: start;
  margin-block-end: var(--space-3xs);
}

th,
td {
  text-align: start;
  padding: var(--space-3xs) var(--space-2xs);
  border-block-end: 1px solid var(--color-border);
  vertical-align: top;
}

th {
  font-weight: 600;
  color: var(--color-ink-blue);
  background-color: rgba(28, 42, 58, 0.04);
}

input,
select,
textarea,
button {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--color-text);
}

input,
select,
textarea {
  background-color: var(--color-ivory);
  border: var(--border-thin);
  border-radius: var(--radius-sm);
  padding: var(--space-3xs) var(--space-2xs);
  width: 100%;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(58, 107, 92, 0.15);
  outline: none;
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 1;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

select {
  appearance: auto;
  -webkit-appearance: auto;
}

label {
  display: inline-block;
  font-size: var(--text-small);
  font-weight: 500;
  color: var(--color-ink-blue);
  margin-block-end: var(--space-4xs);
}

fieldset {
  border: var(--border-thin);
  border-radius: var(--radius-sm);
  padding: var(--space-2xs);
  margin-block-end: var(--space-2xs);
}

fieldset:last-child {
  margin-block-end: 0;
}

legend {
  font-family: var(--font-heading);
  font-size: var(--text-h4);
  font-weight: 600;
  padding-inline: var(--space-3xs);
  color: var(--color-ink-blue);
}

button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3xs);
  background-color: var(--color-accent);
  color: var(--color-ivory);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: var(--space-3xs) var(--space-2xs);
  font-size: var(--text-small);
  font-weight: 600;
  letter-spacing: var(--tracking-button);
  text-transform: uppercase;
  cursor: pointer;
  min-height: 48px;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

button:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}

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

button[type="button"].secondary,
button.secondary,
a.button-secondary {
  background-color: transparent;
  color: var(--color-ink-blue);
  border-color: var(--color-ink-blue);
}

button[type="button"].secondary:hover,
button.secondary:hover,
a.button-secondary:hover {
  background-color: rgba(28, 42, 58, 0.06);
  border-color: var(--color-ink-blue);
  color: var(--color-ink-blue);
}

.container {
  width: 100%;
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: var(--container-padding-mobile);
}

.surface {
  background-color: var(--color-surface);
  border: var(--border-thin);
  border-radius: var(--radius-sm);
  padding: var(--space-xs);
}

.surface-dark {
  background-color: var(--color-surface-dark);
  color: var(--color-text-inverse);
  border: 1px solid var(--color-copper);
  border-radius: var(--radius-sm);
  padding: var(--space-xs);
}

.surface-deep {
  background-color: var(--color-surface-deep);
  color: var(--color-text-inverse);
  border: 1px solid var(--color-copper);
  border-radius: var(--radius-sm);
  padding: var(--space-xs);
}

.card {
  background-color: var(--color-surface);
  border: var(--border-thin);
  border-radius: var(--radius-sm);
  padding: var(--space-xs);
  box-shadow: var(--shadow-card);
}

.card > :last-child {
  margin-block-end: 0;
}

.panel {
  background-color: var(--color-surface);
  border: var(--border-thin);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
}

.panel > :last-child {
  margin-block-end: 0;
}

.flex {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs);
  min-width: 0;
}

.flex > * {
  min-width: 0;
}

.flex-nowrap {
  display: flex;
  flex-wrap: nowrap;
  gap: var(--space-2xs);
  min-width: 0;
}

.flex-nowrap > * {
  min-width: 0;
}

.flex-column {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
  min-width: 0;
}

.flex-column > * {
  min-width: 0;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xs);
  min-width: 0;
}

.flex-center > * {
  min-width: 0;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2xs);
  flex-wrap: wrap;
  min-width: 0;
}

.flex-between > * {
  min-width: 0;
}

.flex-start {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2xs);
  flex-wrap: wrap;
  min-width: 0;
}

.flex-start > * {
  min-width: 0;
}

.flex-end {
  display: flex;
  align-items: flex-end;
  gap: var(--space-2xs);
  flex-wrap: wrap;
  min-width: 0;
}

.flex-end > * {
  min-width: 0;
}

.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  gap: var(--space-xs);
  min-width: 0;
}

.grid-auto > * {
  min-width: 0;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
  min-width: 0;
}

.stack > * {
  min-width: 0;
}

.stack-sm {
  display: flex;
  flex-direction: column;
  gap: var(--space-3xs);
  min-width: 0;
}

.stack-sm > * {
  min-width: 0;
}

.stack-lg {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  min-width: 0;
}

.stack-lg > * {
  min-width: 0;
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3xs);
  min-width: 0;
}

.cluster > * {
  min-width: 0;
}

.section {
  padding-block: var(--space-md);
}

.section-lg {
  padding-block: var(--space-lg);
}

.section-xl {
  padding-block: var(--space-xl);
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-2xs);
  z-index: 9999;
  background-color: var(--color-accent);
  color: var(--color-ivory);
  padding: var(--space-3xs) var(--space-2xs);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
  font-size: var(--text-small);
  letter-spacing: var(--tracking-button);
  text-transform: uppercase;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-2xs);
  outline: var(--border-focus);
  outline-offset: 2px;
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (min-width: 768px) {
  .container,
  .section {
    padding-block: var(--space-lg);
  }

  .section-lg {
    padding-block: var(--space-xl);
  }

  .section-xl {
    padding-block: var(--space-xl);
  }
}

@media (max-width: 767px) {
  body {
    line-height: 1.7;
  }

  p {
    line-height: 1.7;
  }

  .section {
    padding-block: var(--space-md);
  }

  .section-lg {
    padding-block: var(--space-md);
  }

  .section-xl {
    padding-block: var(--space-lg);
  }
}

@media (max-width: 359px) {
  .container,
  }
/* Illustrations within guide content */
.editorial-figure { margin: 24px 0; overflow: hidden; border: var(--border-thin); border-radius: var(--radius-sm); }
.editorial-image { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; }
@media (max-width: 600px) { .editorial-image { aspect-ratio: 4 / 3; } }