:root {
  --color-alabaster: #F5F5F0;
  --color-ultramarine: #1A2A6C;
  --color-dark-cherry: #5E1A2B;
  --color-silver: #C0C0C0;
  --color-ink: #1A1A1A;
  --color-white: #FFFFFF;

  --font-heading: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-body: "Inter", "Helvetica Neue", Arial, sans-serif;

  --text-display-size: clamp(3rem, 6vw, 4.5rem);
  --text-h1-size: clamp(2.25rem, 4.5vw, 3rem);
  --text-h2-size: clamp(1.75rem, 3.5vw, 2.25rem);
  --text-h3-size: clamp(1.375rem, 2.5vw, 1.5rem);
  --text-body-size: 1.125rem;
  --text-small-size: 0.875rem;

  --text-display-line-height: 1.1;
  --text-h1-line-height: 1.2;
  --text-h2-line-height: 1.3;
  --text-h3-line-height: 1.4;
  --text-body-line-height: 1.6;
  --text-small-line-height: 1.5;

  --text-display-letter-spacing: -0.02em;
  --text-h1-letter-spacing: -0.01em;
  --text-h2-letter-spacing: 0em;
  --text-h3-letter-spacing: 0em;
  --text-body-letter-spacing: 0em;
  --text-small-letter-spacing: 0.01em;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --space-7: 4rem;
  --space-8: 6rem;
  --space-9: 8rem;

  --container-max-width: 1200px;
  --container-padding-desktop: 4rem;
  --container-padding-mobile: 2rem;
  --section-spacing-desktop: 6rem;
  --section-spacing-mobile: 4rem;
  --card-padding: 1.5rem;

  --radius-small: 4px;
  --radius-medium: 8px;
  --radius-large: 16px;
  --radius-pill: 24px;

  --border-width: 1px;
  --border-color: var(--color-silver);

  --shadow-subtle: 0 2px 8px rgba(26, 26, 26, 0.06);
  --shadow-elevated: 0 6px 20px rgba(26, 26, 26, 0.1);
  --shadow-hover: 0 10px 28px rgba(26, 26, 26, 0.14);

  --focus-outline-width: 2px;
  --focus-outline-color: var(--color-ultramarine);

  --transition-duration: 0.2s;
  --transition-ease: ease;

  --header-height: 72px;
  --header-height-mobile: 60px;
}

*,
*::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-size);
  line-height: var(--text-body-line-height);
  letter-spacing: var(--text-body-letter-spacing);
  color: var(--color-ink);
  background-color: var(--color-alabaster);
  min-height: 100vh;
  min-width: 320px;
  overflow-x: hidden;
}

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

input,
button,
textarea,
select {
  font: inherit;
  letter-spacing: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
}

button {
  cursor: pointer;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-duration) var(--transition-ease);
}

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-ultramarine);
  overflow-wrap: break-word;
  word-wrap: break-word;
}

h1 {
  font-size: var(--text-h1-size);
  line-height: var(--text-h1-line-height);
  letter-spacing: var(--text-h1-letter-spacing);
  margin-block-end: var(--space-4);
}

h2 {
  font-size: var(--text-h2-size);
  line-height: var(--text-h2-line-height);
  letter-spacing: var(--text-h2-letter-spacing);
  margin-block-end: var(--space-3);
}

h3 {
  font-size: var(--text-h3-size);
  line-height: var(--text-h3-line-height);
  letter-spacing: var(--text-h3-letter-spacing);
  margin-block-end: var(--space-2);
}

h4,
h5,
h6 {
  font-size: var(--text-h3-size);
  line-height: var(--text-h3-line-height);
  letter-spacing: var(--text-h3-letter-spacing);
  margin-block-end: var(--space-2);
}

p {
  margin-block-end: var(--space-3);
  overflow-wrap: break-word;
  word-wrap: break-word;
}

blockquote {
  margin-block-end: var(--space-3);
  padding-inline-start: var(--space-4);
  border-inline-start: 3px solid var(--color-silver);
  font-style: italic;
  color: var(--color-ink);
}

figure {
  margin-block-end: var(--space-3);
}

figcaption {
  font-size: var(--text-small-size);
  line-height: var(--text-small-line-height);
  letter-spacing: var(--text-small-letter-spacing);
  color: var(--color-silver);
  margin-block-start: var(--space-2);
}

hr {
  border: none;
  border-block-start: var(--border-width) solid var(--color-silver);
  margin-block: var(--space-5);
}

address {
  font-style: normal;
}

small {
  font-size: var(--text-small-size);
  line-height: var(--text-small-line-height);
  letter-spacing: var(--text-small-letter-spacing);
}

strong {
  font-weight: 600;
}

em {
  font-style: italic;
}

code,
pre {
  font-family: "SF Mono", "Fira Code", "Consolas", monospace;
  font-size: 0.9em;
}

pre {
  overflow-x: auto;
  padding: var(--space-3);
  background-color: var(--color-white);
  border: var(--border-width) solid var(--color-silver);
  border-radius: var(--radius-medium);
  margin-block-end: var(--space-3);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-block-end: var(--space-3);
}

th,
td {
  padding: var(--space-2) var(--space-3);
  text-align: start;
  border-block-end: var(--border-width) solid var(--color-silver);
}

th {
  font-weight: 600;
  color: var(--color-ultramarine);
}

form {
  margin-block-end: var(--space-3);
}

label {
  display: block;
  font-size: var(--text-small-size);
  line-height: var(--text-small-line-height);
  letter-spacing: var(--text-small-letter-spacing);
  font-weight: 500;
  margin-block-end: var(--space-1);
}

input,
textarea,
select {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: var(--border-width) solid var(--color-silver);
  border-radius: var(--radius-medium);
  background-color: var(--color-white);
  transition: border-color var(--transition-duration) var(--transition-ease),
    box-shadow var(--transition-duration) var(--transition-ease);
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--color-ultramarine);
  box-shadow: 0 0 0 var(--focus-outline-width) var(--focus-outline-color);
}

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

select {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%231A1A1A' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-inline-end: var(--space-5);
}

input[type="checkbox"],
input[type="radio"] {
  width: auto;
  margin-inline-end: var(--space-2);
  accent-color: var(--color-ultramarine);
}

input[type="submit"],
input[type="reset"],
input[type="button"] {
  width: auto;
  cursor: pointer;
}

fieldset {
  border: var(--border-width) solid var(--color-silver);
  border-radius: var(--radius-medium);
  padding: var(--space-3);
  margin-block-end: var(--space-3);
}

legend {
  padding-inline: var(--space-2);
  font-size: var(--text-small-size);
  line-height: var(--text-small-line-height);
  letter-spacing: var(--text-small-letter-spacing);
  font-weight: 600;
  color: var(--color-ultramarine);
}

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

@media (min-width: 768px) {
  .container {
    padding-inline: var(--container-padding-desktop);
  }
}

.section {
  padding-block: var(--section-spacing-mobile);
}

@media (min-width: 768px) {
  .section {
    padding-block: var(--section-spacing-desktop);
  }
}

.section--compact {
  padding-block: var(--space-6);
}

@media (min-width: 768px) {
  .section--compact {
    padding-block: var(--space-7);
  }
}

.surface {
  background-color: var(--color-white);
  border-radius: var(--radius-medium);
  box-shadow: var(--shadow-subtle);
  padding: var(--card-padding);
}

.surface--elevated {
  box-shadow: var(--shadow-elevated);
}

.surface--dark {
  background-color: var(--color-ultramarine);
  color: var(--color-alabaster);
}

.surface--dark h1,
.surface--dark h2,
.surface--dark h3,
.surface--dark h4,
.surface--dark h5,
.surface--dark h6 {
  color: var(--color-alabaster);
}

.surface--dark a {
  color: var(--color-alabaster);
}

.surface--dark a:hover {
  color: var(--color-silver);
}

.surface--dark p,
.surface--dark li,
.surface--dark blockquote,
.surface--dark address,
.surface--dark small {
  color: var(--color-alabaster);
}

.surface--dark label {
  color: var(--color-alabaster);
}

.surface--dark input,
.surface--dark textarea,
.surface--dark select {
  background-color: var(--color-alabaster);
  color: var(--color-ink);
  border-color: var(--color-silver);
}

.surface--dark input:focus,
.surface--dark textarea:focus,
.surface--dark select:focus {
  border-color: var(--color-alabaster);
  box-shadow: 0 0 0 var(--focus-outline-width) var(--color-alabaster);
}

.surface--dark fieldset {
  border-color: var(--color-silver);
}

.surface--dark legend {
  color: var(--color-alabaster);
}

.surface--dark hr {
  border-block-start-color: var(--color-silver);
}

.surface--dark th,
.surface--dark td {
  border-block-end-color: var(--color-silver);
}

.surface--dark th {
  color: var(--color-alabaster);
}

.surface--dark figcaption {
  color: var(--color-silver);
}

.surface--dark blockquote {
  border-inline-start-color: var(--color-silver);
  color: var(--color-alabaster);
}

.surface--dark code,
.surface--dark pre {
  background-color: var(--color-alabaster);
  color: var(--color-ink);
  border-color: var(--color-silver);
}

.btn {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-small);
  font-family: var(--font-body);
  font-size: var(--text-small-size);
  line-height: var(--text-small-line-height);
  letter-spacing: var(--text-small-letter-spacing);
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: background-color var(--transition-duration) var(--transition-ease),
    color var(--transition-duration) var(--transition-ease),
    border-color var(--transition-duration) var(--transition-ease),
    box-shadow var(--transition-duration) var(--transition-ease);
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  border: var(--border-width) solid transparent;
}

.btn--primary {
  background-color: var(--color-ultramarine);
  color: var(--color-alabaster);
  border-color: var(--color-ultramarine);
}

.btn--primary:hover {
  background-color: #152254;
  border-color: #152254;
  color: var(--color-alabaster);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-ultramarine);
  border-color: var(--color-ultramarine);
}

.btn--secondary:hover {
  background-color: var(--color-ultramarine);
  color: var(--color-alabaster);
  border-color: var(--color-ultramarine);
}

.btn--accent {
  background-color: var(--color-dark-cherry);
  color: var(--color-alabaster);
  border-color: var(--color-dark-cherry);
}

.btn--accent:hover {
  background-color: #4a1522;
  border-color: #4a1522;
  color: var(--color-alabaster);
}

.btn--ghost {
  background-color: transparent;
  color: var(--color-ink);
  border-color: var(--color-silver);
}

.btn--ghost:hover {
  border-color: var(--color-ultramarine);
  color: var(--color-ultramarine);
}

.btn--large {
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-body-size);
  line-height: var(--text-body-line-height);
}

.btn--small {
  padding: var(--space-1) var(--space-3);
  font-size: 0.75rem;
  line-height: 1.4;
}

.btn--full {
  width: 100%;
}

.btn:focus-visible {
  outline: var(--focus-outline-width) solid var(--focus-outline-color);
  outline-offset: 2px;
}

.link-underline {
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--color-silver);
  transition: text-decoration-color var(--transition-duration) var(--transition-ease);
}

.link-underline:hover {
  text-decoration-color: var(--color-ultramarine);
  color: var(--color-ultramarine);
}

.text-small {
  font-size: var(--text-small-size);
  line-height: var(--text-small-line-height);
  letter-spacing: var(--text-small-letter-spacing);
}

.text-display {
  font-family: var(--font-heading);
  font-size: var(--text-display-size);
  line-height: var(--text-display-line-height);
  letter-spacing: var(--text-display-letter-spacing);
  font-weight: 700;
  color: var(--color-ultramarine);
}

.text-uppercase {
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.text-center {
  text-align: center;
}

.text-accent {
  color: var(--color-dark-cherry);
}

.text-silver {
  color: var(--color-silver);
}

.text-ultramarine {
  color: var(--color-ultramarine);
}

.text-alabaster {
  color: var(--color-alabaster);
}

.text-ink {
  color: var(--color-ink);
}

.mt-1 { margin-block-start: var(--space-1); }
.mt-2 { margin-block-start: var(--space-2); }
.mt-3 { margin-block-start: var(--space-3); }
.mt-4 { margin-block-start: var(--space-4); }
.mt-5 { margin-block-start: var(--space-5); }
.mt-6 { margin-block-start: var(--space-6); }
.mt-7 { margin-block-start: var(--space-7); }
.mt-8 { margin-block-start: var(--space-8); }
.mt-9 { margin-block-start: var(--space-9); }

.mb-1 { margin-block-end: var(--space-1); }
.mb-2 { margin-block-end: var(--space-2); }
.mb-3 { margin-block-end: var(--space-3); }
.mb-4 { margin-block-end: var(--space-4); }
.mb-5 { margin-block-end: var(--space-5); }
.mb-6 { margin-block-end: var(--space-6); }
.mb-7 { margin-block-end: var(--space-7); }
.mb-8 { margin-block-end: var(--space-8); }
.mb-9 { margin-block-end: var(--space-9); }

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

.flex > * {
  min-width: 0;
  flex-shrink: 1;
}

.flex--nowrap {
  flex-wrap: nowrap;
}

.flex--column {
  flex-direction: column;
}

.flex--align-center {
  align-items: center;
}

.flex--align-start {
  align-items: flex-start;
}

.flex--align-end {
  align-items: flex-end;
}

.flex--justify-center {
  justify-content: center;
}

.flex--justify-between {
  justify-content: space-between;
}

.flex--justify-end {
  justify-content: flex-end;
}

.flex--gap-1 { gap: var(--space-1); }
.flex--gap-2 { gap: var(--space-2); }
.flex--gap-3 { gap: var(--space-3); }
.flex--gap-4 { gap: var(--space-4); }
.flex--gap-5 { gap: var(--space-5); }
.flex--gap-6 { gap: var(--space-6); }

.flex--grow {
  flex-grow: 1;
}

.flex--shrink-none {
  flex-shrink: 0;
}

.content-list {
  margin-block-end: var(--space-3);
  padding-inline-start: var(--space-4);
}

.content-list li {
  margin-block-end: var(--space-2);
  position: relative;
  padding-inline-start: var(--space-3);
}

.content-list li::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  inset-block-start: 0.65em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-silver);
}

.content-list li:last-child {
  margin-block-end: 0;
}

.content-list--ordered {
  list-style: decimal;
  padding-inline-start: var(--space-5);
}

.content-list--ordered li {
  padding-inline-start: 0;
}

.content-list--ordered li::before {
  display: none;
}

.content-list--unstyled {
  list-style: none;
  padding-inline-start: 0;
}

.content-list--unstyled li {
  padding-inline-start: 0;
}

.content-list--unstyled li::before {
  display: none;
}

.content-list--inline {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  padding-inline-start: 0;
  list-style: none;
}

.content-list--inline li {
  margin-block-end: 0;
  padding-inline-start: 0;
}

.content-list--inline li::before {
  display: none;
}

.surface > :last-child,
.section > :last-child,
.container > :last-child,
.card > :last-child,
.panel > :last-child {
  margin-block-end: 0;
}

.surface > p:last-child,
.section > p:last-child,
.container > p:last-child,
.card > p:last-child,
.panel > p:last-child {
  margin-block-end: 0;
}

.surface > .content-list:last-child,
.section > .content-list:last-child,
.container > .content-list:last-child,
.card > .content-list:last-child,
.panel > .content-list:last-child {
  margin-block-end: 0;
}

.surface > blockquote:last-child,
.section > blockquote:last-child,
.container > blockquote:last-child,
.card > blockquote:last-child,
.panel > blockquote:last-child {
  margin-block-end: 0;
}

.surface > figure:last-child,
.section > figure:last-child,
.container > figure:last-child,
.card > figure:last-child,
.panel > figure:last-child {
  margin-block-end: 0;
}

.surface > form:last-child,
.section > form:last-child,
.container > form:last-child,
.card > form:last-child,
.panel > form:last-child {
  margin-block-end: 0;
}

.surface > table:last-child,
.section > table:last-child,
.container > table:last-child,
.card > table:last-child,
.panel > table:last-child {
  margin-block-end: 0;
}

.surface > pre:last-child,
.section > pre:last-child,
.container > pre:last-child,
.card > pre:last-child,
.panel > pre:last-child {
  margin-block-end: 0;
}

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

.skip-link {
  position: absolute;
  inset-block-start: -100%;
  inset-inline-start: var(--space-4);
  z-index: 9999;
  background-color: var(--color-ultramarine);
  color: var(--color-alabaster);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-small);
  transition: inset-block-start var(--transition-duration) var(--transition-ease);
}

.skip-link:focus {
  inset-block-start: var(--space-4);
  color: var(--color-alabaster);
}

:focus-visible {
  outline: var(--focus-outline-width) solid var(--focus-outline-color);
  outline-offset: 2px;
}

::selection {
  background-color: var(--color-ultramarine);
  color: var(--color-alabaster);
}

::-moz-selection {
  background-color: var(--color-ultramarine);
  color: var(--color-alabaster);
}