:root {
  --color-paper: #F5F0E6;
  --color-ink: #20212B;
  --color-sand: #D9C3A5;
  --color-blue: #457B9D;
  --color-clay: #E76F51;
  --color-olive: #718355;
  --color-ink-10: rgba(32, 33, 43, 0.1);
  --color-ink-5: rgba(32, 33, 43, 0.05);
  --color-ink-3: rgba(32, 33, 43, 0.03);
  --color-white: #FFFFFF;

  --font-heading: Georgia, serif;
  --font-body: Helvetica, Arial, sans-serif;

  --text-display: 2.5rem;
  --text-h1: 2rem;
  --text-h2: 1.5rem;
  --text-h3: 1.25rem;
  --text-body: 1rem;
  --text-small: 0.875rem;

  --leading-display: 1.2;
  --leading-h1: 1.3;
  --leading-h2: 1.35;
  --leading-h3: 1.4;
  --leading-body: 1.6;
  --leading-small: 1.5;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  --container-max: 1200px;
  --container-padding-mobile: 1rem;
  --container-padding-desktop: 2rem;
  --section-padding-desktop: 3rem;
  --section-padding-mobile: 2rem;
  --card-padding-desktop: 1.5rem;
  --card-padding-mobile: 1rem;
  --gutter: 1rem;

  --radius-small: 4px;
  --radius-medium: 8px;
  --radius-large: 12px;

  --border-thin: 1px solid var(--color-ink-10);
  --shadow-low: 0 1px 3px rgba(32, 33, 43, 0.1), 0 4px 8px rgba(32, 33, 43, 0.05);
  --shadow-press: 0 1px 2px rgba(32, 33, 43, 0.08);

  --transition-fast: 0.2s ease;
  --touch-target: 44px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--color-ink);
  background-color: var(--color-paper);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  overflow-wrap: break-word;
  hyphens: auto;
}

h1 {
  font-size: var(--text-h1);
  line-height: var(--leading-h1);
  margin-block-end: var(--space-lg);
}

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

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

h4, h5, h6 {
  font-size: var(--text-body);
  line-height: var(--leading-body);
  margin-block-end: var(--space-sm);
}

p {
  font-size: var(--text-body);
  line-height: var(--leading-body);
  margin-block-end: var(--space-md);
  overflow-wrap: break-word;
  hyphens: auto;
}

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

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

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

li {
  overflow-wrap: break-word;
  hyphens: auto;
}

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

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

a {
  color: var(--color-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

a:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 2px;
  border-radius: var(--radius-small);
}

img,
svg,
video,
canvas,
audio,
iframe,
embed,
object {
  display: block;
  max-width: 100%;
  height: auto;
}

img {
  border: var(--border-thin);
  border-radius: var(--radius-medium);
  box-shadow: var(--shadow-low);
}

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

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

th, td {
  padding: var(--space-sm) var(--space-md);
  border: var(--border-thin);
  text-align: start;
  vertical-align: top;
}

th {
  font-family: var(--font-heading);
  font-weight: 700;
  background-color: var(--color-sand);
}

caption {
  font-size: var(--text-small);
  line-height: var(--leading-small);
  margin-block-end: var(--space-sm);
  text-align: start;
}

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

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

figcaption {
  font-size: var(--text-small);
  line-height: var(--leading-small);
  margin-block-start: var(--space-sm);
  color: var(--color-ink);
}

hr {
  border: none;
  border-block-start: var(--border-thin);
  margin-block: var(--space-lg);
}

button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  color: inherit;
  background-color: transparent;
  border: none;
  border-radius: 0;
}

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

input,
select,
textarea {
  display: block;
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background-color: var(--color-paper);
  border: var(--border-thin);
  border-radius: var(--radius-small);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: none;
  border-color: var(--color-blue);
  box-shadow: 0 0 0 3px rgba(69, 123, 157, 0.2);
}

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

label {
  display: block;
  margin-block-end: var(--space-xs);
  font-weight: 700;
  font-size: var(--text-small);
  line-height: var(--leading-small);
}

fieldset {
  border: var(--border-thin);
  border-radius: var(--radius-medium);
  padding: var(--space-md);
  margin-block-end: var(--space-md);
}

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

legend {
  font-family: var(--font-heading);
  font-weight: 700;
  padding-inline: var(--space-sm);
}

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

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

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

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

.card {
  background-color: var(--color-paper);
  border: var(--border-thin);
  border-radius: var(--radius-medium);
  box-shadow: var(--shadow-low);
  padding: var(--card-padding-mobile);
}

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

.panel {
  background-color: var(--color-paper);
  border: var(--border-thin);
  border-radius: var(--radius-medium);
  padding: var(--card-padding-mobile);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  min-height: var(--touch-target);
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: 700;
  line-height: var(--leading-body);
  text-align: center;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius-small);
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
}

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

.btn-primary {
  background-color: var(--color-blue);
  color: var(--color-white);
  border-color: var(--color-blue);
}

.btn-primary:hover {
  background-color: #3a6a87;
  border-color: #3a6a87;
  color: var(--color-white);
}

.btn-primary:active {
  background-color: #2f566e;
  border-color: #2f566e;
  box-shadow: var(--shadow-press);
}

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

.btn-secondary:hover {
  background-color: var(--color-blue);
  color: var(--color-white);
}

.btn-secondary:active {
  background-color: #3a6a87;
  border-color: #3a6a87;
  box-shadow: var(--shadow-press);
}

.btn-google-play {
  background-color: var(--color-blue);
  color: var(--color-white);
  border-color: var(--color-blue);
  gap: var(--space-sm);
}

.btn-google-play:hover {
  background-color: #3a6a87;
  border-color: #3a6a87;
  color: var(--color-white);
}

.btn-google-play:active {
  background-color: #2f566e;
  border-color: #2f566e;
  box-shadow: var(--shadow-press);
}

.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;
  top: -100%;
  left: var(--space-md);
  z-index: 10000;
  background-color: var(--color-blue);
  color: var(--color-white);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-small);
  font-weight: 700;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-md);
  color: var(--color-white);
}

.aspect-ratio-16-9 {
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.aspect-ratio-4-3 {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.aspect-ratio-1-1 {
  aspect-ratio: 1 / 1;
  overflow: hidden;
}

.aspect-ratio-16-9 img,
.aspect-ratio-4-3 img,
.aspect-ratio-1-1 img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border: var(--border-thin);
  border-radius: var(--radius-medium);
  box-shadow: var(--shadow-low);
}

.flex-row {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: var(--space-md);
}

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

.flex-column {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

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

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
}

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

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

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

.content-list {
  list-style: none;
  padding-inline-start: 0;
  margin-block-end: 0;
}

.content-list li {
  margin-block-end: var(--space-sm);
}

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

@media (min-width: 768px) {
  :root {
    --text-display: 2.5rem;
    --text-h1: 2rem;
    --text-h2: 1.5rem;
    --text-h3: 1.25rem;
  }

  .container {
    padding-inline: var(--container-padding-desktop);
  }

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

  .card {
    padding: var(--card-padding-desktop);
  }

  .panel {
    padding: var(--card-padding-desktop);
  }
}

@media (max-width: 767px) {
  :root {
    --text-display: 2rem;
    --text-h1: 1.5rem;
    --text-h2: 1.25rem;
    --text-h3: 1.125rem;
  }

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

  h2 {
    font-size: var(--text-h2);
    line-height: var(--leading-h2);
  }

  h3 {
    font-size: var(--text-h3);
    line-height: var(--leading-h3);
  }
}