:root {
  --color-abyss: #070A08;
  --color-volcanic: #1C1F1D;
  --color-basalt: #2E3330;
  --color-jungle: #1F6B3A;
  --color-canopy: #3E9B5F;
  --color-amber: #F2A900;
  --color-sand: #E8DCC8;
  --color-bone: #A8A090;
  --color-fossil: #5C5A52;
  --color-labglass: rgba(232, 220, 200, 0.06);

  --font-heading: "Oswald", sans-serif;
  --font-body: "Source Sans 3", sans-serif;

  --text-display-size: clamp(3.5rem, 8vw, 7rem);
  --text-display-line-height: 0.95;
  --text-display-weight: 600;
  --text-display-letter-spacing: -0.02em;

  --text-h1-size: clamp(2.5rem, 5vw, 4.5rem);
  --text-h1-line-height: 1.0;
  --text-h1-weight: 600;
  --text-h1-letter-spacing: -0.015em;

  --text-h2-size: clamp(1.75rem, 3.5vw, 3rem);
  --text-h2-line-height: 1.05;
  --text-h2-weight: 600;
  --text-h2-letter-spacing: -0.01em;

  --text-h3-size: clamp(1.25rem, 2.2vw, 1.75rem);
  --text-h3-line-height: 1.15;
  --text-h3-weight: 500;
  --text-h3-letter-spacing: 0;

  --text-h4-size: 1.125rem;
  --text-h4-line-height: 1.25;
  --text-h4-weight: 600;
  --text-h4-letter-spacing: 0.01em;

  --text-body-lg-size: 1.125rem;
  --text-body-lg-line-height: 1.65;
  --text-body-lg-weight: 400;
  --text-body-lg-letter-spacing: 0;

  --text-body-size: 1rem;
  --text-body-line-height: 1.65;
  --text-body-weight: 400;
  --text-body-letter-spacing: 0;

  --text-body-sm-size: 0.875rem;
  --text-body-sm-line-height: 1.55;
  --text-body-sm-weight: 400;
  --text-body-sm-letter-spacing: 0.005em;

  --text-caption-size: 0.75rem;
  --text-caption-line-height: 1.4;
  --text-caption-weight: 500;
  --text-caption-letter-spacing: 0.08em;

  --text-button-size: 0.875rem;
  --text-button-line-height: 1;
  --text-button-weight: 600;
  --text-button-letter-spacing: 0.06em;

  --space-2xs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  --space-5xl: 128px;

  --container-max: 1200px;
  --container-padding-mobile: 24px;
  --container-padding-desktop: 48px;

  --radius-0: 0px;
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;

  --border-default: 1px solid var(--color-basalt);
  --border-active: 1px solid var(--color-jungle);
  --border-focus: 1px solid var(--color-amber);

  --shadow-modal: 0 8px 24px rgba(0, 0, 0, 0.6);

  --transition-color: 150ms ease-out;
  --transition-opacity: 250ms ease-out;
  --transition-transform: 250ms ease-out;
  --transition-expand: 200ms ease-out;
  --transition-reveal: 300ms ease-out;

  --focus-outline: 2px solid var(--color-amber);
  --focus-offset: 2px;
}

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

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

body {
  font-family: var(--font-body);
  font-size: var(--text-body-size);
  line-height: var(--text-body-line-height);
  font-weight: var(--text-body-weight);
  letter-spacing: var(--text-body-letter-spacing);
  color: var(--color-sand);
  background-color: var(--color-abyss);
  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;
  color: inherit;
  letter-spacing: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
  text-transform: uppercase;
  font-family: var(--font-heading);
  font-size: var(--text-button-size);
  line-height: var(--text-button-line-height);
  font-weight: var(--text-button-weight);
  letter-spacing: var(--text-button-letter-spacing);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-color), color var(--transition-color), border-color var(--transition-color), opacity var(--transition-opacity), transform var(--transition-transform);
}

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

a {
  color: var(--color-sand);
  text-decoration: none;
  transition: color var(--transition-color), border-color var(--transition-color);
}

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

ul,
ol {
  list-style: none;
}

blockquote,
q {
  quotes: none;
}

blockquote::before,
blockquote::after,
q::before,
q::after {
  content: "";
  content: none;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  text-transform: uppercase;
  color: var(--color-sand);
  margin-block-end: var(--space-md);
}

h1:last-child,
h2:last-child,
h3:last-child,
h4:last-child,
h5:last-child,
h6:last-child {
  margin-block-end: 0;
}

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

h1 {
  font-size: var(--text-h1-size);
  line-height: var(--text-h1-line-height);
  font-weight: var(--text-h1-weight);
  letter-spacing: var(--text-h1-letter-spacing);
}

h2 {
  font-size: var(--text-h2-size);
  line-height: var(--text-h2-line-height);
  font-weight: var(--text-h2-weight);
  letter-spacing: var(--text-h2-letter-spacing);
}

h3 {
  font-size: var(--text-h3-size);
  line-height: var(--text-h3-line-height);
  font-weight: var(--text-h3-weight);
  letter-spacing: var(--text-h3-letter-spacing);
}

h4 {
  font-size: var(--text-h4-size);
  line-height: var(--text-h4-line-height);
  font-weight: var(--text-h4-weight);
  letter-spacing: var(--text-h4-letter-spacing);
}

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

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

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

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

.caption {
  font-size: var(--text-caption-size);
  line-height: var(--text-caption-line-height);
  font-weight: var(--text-caption-weight);
  letter-spacing: var(--text-caption-letter-spacing);
  text-transform: uppercase;
  color: var(--color-bone);
}

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

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

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

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

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

.surface-glass {
  background-color: var(--color-labglass);
  border: var(--border-default);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.border-default {
  border: var(--border-default);
}

.border-top-amber {
  border-top: 1px solid var(--color-amber);
}

.border-top-jungle {
  border-top: 1px solid var(--color-jungle);
}

.radius-0 {
  border-radius: var(--radius-0);
}

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

.radius-md {
  border-radius: var(--radius-md);
}

.radius-lg {
  border-radius: var(--radius-lg);
}

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

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

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

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

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

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  min-height: 44px;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: var(--text-button-size);
  line-height: var(--text-button-line-height);
  font-weight: var(--text-button-weight);
  letter-spacing: var(--text-button-letter-spacing);
  text-transform: uppercase;
  cursor: pointer;
  transition: background-color var(--transition-color), color var(--transition-color), border-color var(--transition-color), transform var(--transition-transform);
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background-color: var(--color-amber);
  color: var(--color-abyss);
  border: 1px solid var(--color-amber);
}

.btn-primary:hover {
  background-color: var(--color-sand);
  border-color: var(--color-sand);
  color: var(--color-abyss);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-sand);
  border: 1px solid var(--color-sand);
}

.btn-secondary:hover {
  border-color: var(--color-amber);
  color: var(--color-amber);
}

.btn-tertiary {
  background-color: transparent;
  color: var(--color-sand);
  border: 1px solid transparent;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.btn-tertiary:hover {
  color: var(--color-amber);
  text-decoration-color: var(--color-amber);
}

.btn:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
button:focus-visible {
  outline: var(--focus-outline);
  outline-offset: var(--focus-offset);
}

input,
textarea,
select {
  background-color: var(--color-abyss);
  border: var(--border-default);
  border-radius: var(--radius-sm);
  color: var(--color-sand);
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-body);
  font-size: var(--text-body-size);
  line-height: var(--text-body-line-height);
  transition: border-color var(--transition-color);
  width: 100%;
}

input::placeholder,
textarea::placeholder {
  color: var(--color-fossil);
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--color-amber);
  outline: none;
}

label {
  display: block;
  font-size: var(--text-caption-size);
  line-height: var(--text-caption-line-height);
  font-weight: var(--text-caption-weight);
  letter-spacing: var(--text-caption-letter-spacing);
  text-transform: uppercase;
  color: var(--color-bone);
  margin-block-end: var(--space-xs);
}

.card {
  background-color: var(--color-volcanic);
  border: var(--border-default);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: border-color var(--transition-color), background-color var(--transition-color);
}

.card:hover {
  border-color: var(--color-canopy);
  background-color: var(--color-basalt);
}

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

.panel {
  background-color: var(--color-volcanic);
  border: var(--border-default);
  border-radius: var(--radius-0);
  padding: var(--space-lg);
}

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

.divider {
  border: none;
  border-top: 1px solid var(--color-basalt);
  margin-block: var(--space-lg);
}

.section-marker {
  display: inline-block;
  width: 48px;
  height: 1px;
  background-color: var(--color-jungle);
  margin-block-end: var(--space-sm);
}

.flex {
  display: flex;
}

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

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

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

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

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

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

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

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

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

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

.flex-1 {
  flex: 1 1 0%;
  min-width: 0;
}

.flex-auto {
  flex: 0 1 auto;
  min-width: 0;
}

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

.gap-2xs {
  gap: var(--space-2xs);
}

.gap-xs {
  gap: var(--space-xs);
}

.gap-sm {
  gap: var(--space-sm);
}

.gap-md {
  gap: var(--space-md);
}

.gap-lg {
  gap: var(--space-lg);
}

.gap-xl {
  gap: var(--space-xl);
}

.gap-2xl {
  gap: var(--space-2xl);
}

.gap-3xl {
  gap: var(--space-3xl);
}

.mt-2xs { margin-block-start: var(--space-2xs); }
.mt-xs { margin-block-start: var(--space-xs); }
.mt-sm { margin-block-start: var(--space-sm); }
.mt-md { margin-block-start: var(--space-md); }
.mt-lg { margin-block-start: var(--space-lg); }
.mt-xl { margin-block-start: var(--space-xl); }
.mt-2xl { margin-block-start: var(--space-2xl); }
.mt-3xl { margin-block-start: var(--space-3xl); }
.mt-4xl { margin-block-start: var(--space-4xl); }
.mt-5xl { margin-block-start: var(--space-5xl); }

.mb-2xs { margin-block-end: var(--space-2xs); }
.mb-xs { margin-block-end: var(--space-xs); }
.mb-sm { margin-block-end: var(--space-sm); }
.mb-md { margin-block-end: var(--space-md); }
.mb-lg { margin-block-end: var(--space-lg); }
.mb-xl { margin-block-end: var(--space-xl); }
.mb-2xl { margin-block-end: var(--space-2xl); }
.mb-3xl { margin-block-end: var(--space-3xl); }
.mb-4xl { margin-block-end: var(--space-4xl); }
.mb-5xl { margin-block-end: var(--space-5xl); }

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

@media (max-width: 767px) {
  .flex-row,
  .flex-between {
    flex-direction: column;
    align-items: stretch;
  }

  .flex-row > *,
  .flex-between > * {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}