:root {
  --color-carbon-950: #080b0f;
  --color-carbon-900: #10161c;
  --color-carbon-800: #172129;
  --color-smoked-glass: rgba(22, 31, 39, 0.82);
  --color-titanium-500: #89949d;
  --color-titanium-300: #c2cbd1;
  --color-ice-white: #f2f6f8;
  --color-electric-cyan: #27d9e8;
  --color-racing-yellow: #f4c542;
  --color-racing-yellow-hover: #d9a900;
  --color-wet-asphalt: #30383d;
  --color-success-green: #49c98a;
  --color-alert-red: #ff6570;

  --color-page: var(--color-carbon-950);
  --color-surface: var(--color-carbon-900);
  --color-surface-raised: var(--color-carbon-800);
  --color-text: var(--color-ice-white);
  --color-text-muted: var(--color-titanium-300);
  --color-text-subtle: var(--color-titanium-500);
  --color-border: rgb(137 148 157 / 28%);
  --color-border-subtle: rgb(137 148 157 / 20%);
  --color-border-active: rgb(39 217 232 / 60%);
  --color-focus: var(--color-electric-cyan);

  --font-heading: "Barlow Condensed", "Arial Narrow", Arial, sans-serif;
  --font-body: Inter, Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;

  --text-telemetry: 0.75rem;
  --text-meta: 0.875rem;
  --text-body: 1rem;
  --text-intro: 1.125rem;
  --text-card-title: 1.5rem;
  --text-section-title: clamp(1.75rem, 3vw, 2rem);
  --text-hero-title: clamp(2.5rem, 5vw, 3rem);
  --text-display: clamp(3rem, 8vw, 4.5rem);

  --leading-telemetry: 1.333;
  --leading-meta: 1.429;
  --leading-body: 1.625;
  --leading-intro: 1.556;
  --leading-heading: 1;

  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-extrabold: 800;

  --tracking-heading: 0.02em;
  --tracking-label: 0.1em;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;
  --space-10: 8rem;

  --container-max: 80rem;
  --container-padding: 2rem;
  --container-padding-mobile: 1.25rem;
  --gutter: 1.5rem;
  --gutter-tablet: 1.25rem;
  --gutter-mobile: 1rem;

  --radius-none: 0;
  --radius-control: 0.25rem;
  --radius-card: 0.5rem;

  --border-width: 1px;
  --shadow-floating: 0 16px 40px rgb(0 0 0 / 32%);
  --transition-fast: 160ms ease-out;
  --transition-base: 180ms ease-out;

  --header-padding-block: 1.25rem;
  --header-padding-block-compact: 0.75rem;
  --section-space: 4rem;
  --hero-space: clamp(4rem, 9vw, 8rem);
}

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

html {
  min-width: 320px;
  background: var(--color-page);
  color-scheme: dark;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background-color: var(--color-page);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: var(--weight-regular);
  line-height: var(--leading-body);
  text-rendering: optimizeLegibility;
}

main,
header,
footer,
section,
article,
aside,
nav,
figure,
form,
fieldset,
table {
  min-width: 0;
}

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

img,
video {
  height: auto;
}

img {
  font-style: italic;
}

svg {
  fill: currentColor;
}

button,
input,
select,
textarea {
  margin: 0;
  color: inherit;
  font: inherit;
}

button,
select {
  text-transform: none;
}

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

button:disabled,
input:disabled,
select:disabled,
textarea:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

textarea {
  min-height: 8rem;
  resize: vertical;
}

fieldset {
  min-inline-size: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

legend {
  padding: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  border-spacing: 0;
}

th,
td {
  padding: var(--space-3);
  border-bottom: var(--border-width) solid var(--color-border-subtle);
  text-align: start;
  vertical-align: top;
}

th {
  color: var(--color-titanium-300);
  font-family: var(--font-heading);
  font-size: var(--text-meta);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-label);
  line-height: var(--leading-meta);
  text-transform: uppercase;
}

ul,
ol {
  margin-block: 0 1.5rem;
  padding-inline-start: 1.5rem;
}

li::marker {
  color: var(--color-electric-cyan);
}

blockquote {
  margin: 0 0 var(--space-5);
  padding: var(--space-4) 0 var(--space-4) var(--space-5);
  border-inline-start: 2px solid var(--color-electric-cyan);
  color: var(--color-titanium-300);
}

hr {
  height: 1px;
  margin-block: var(--space-6);
  border: 0;
  background: var(--color-border);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 var(--space-4);
  color: var(--color-ice-white);
  font-family: var(--font-heading);
  font-weight: var(--weight-extrabold);
  letter-spacing: var(--tracking-heading);
  line-height: var(--leading-heading);
  overflow-wrap: anywhere;
  text-transform: uppercase;
}

h1 {
  font-size: var(--text-display);
}

h2 {
  font-size: var(--text-hero-title);
}

h3 {
  font-size: var(--text-section-title);
}

h4 {
  font-size: var(--text-card-title);
  line-height: 1.208;
}

h5 {
  font-size: var(--text-intro);
  line-height: 1.2;
}

h6 {
  font-size: var(--text-meta);
  line-height: var(--leading-meta);
  letter-spacing: var(--tracking-label);
}

p {
  margin: 0 0 var(--space-5);
  color: var(--color-text);
  overflow-wrap: break-word;
}

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

strong,
b {
  font-weight: var(--weight-bold);
}

em,
i {
  font-style: italic;
}

a {
  color: var(--color-electric-cyan);
  text-decoration-line: underline;
  text-decoration-color: currentColor;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  transition: color var(--transition-base), text-decoration-color var(--transition-base);
}

a:hover {
  color: var(--color-ice-white);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

::selection {
  background: var(--color-electric-cyan);
  color: var(--color-carbon-950);
}

::placeholder {
  color: var(--color-titanium-500);
  opacity: 1;
}

:target {
  scroll-margin-top: var(--space-8);
}

.container {
  width: min(100% - (var(--container-padding) * 2), var(--container-max));
  margin-inline: auto;
}

.container--wide {
  width: min(100% - (var(--container-padding) * 2), 100rem);
  margin-inline: auto;
}

.container--reading {
  width: min(100% - (var(--container-padding) * 2), 45rem);
  margin-inline: auto;
}

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

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

.surface {
  background-color: var(--color-surface);
  border: var(--border-width) solid var(--color-border-subtle);
}

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

.surface--glass {
  background-color: var(--color-smoked-glass);
  border: var(--border-width) solid var(--color-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.panel {
  min-width: 0;
  padding: var(--space-5);
  background-color: var(--color-surface);
  border: var(--border-width) solid var(--color-border-subtle);
}

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

.panel--floating {
  box-shadow: var(--shadow-floating);
}

.panel > :last-child,
.card > :last-child,
.stack > :last-child,
.content-group > :last-child {
  margin-block-end: 0;
}

.card {
  min-width: 0;
  overflow: hidden;
  background-color: var(--color-surface);
  border: var(--border-width) solid var(--color-border-subtle);
  border-radius: var(--radius-card);
}

.card__body {
  min-width: 0;
  padding: var(--space-5);
}

.eyebrow,
.label,
.telemetry {
  display: inline-block;
  color: var(--color-titanium-300);
  font-family: var(--font-heading);
  font-size: var(--text-telemetry);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-label);
  line-height: var(--leading-telemetry);
  text-transform: uppercase;
}

.eyebrow,
.label {
  margin-block-end: var(--space-2);
}

.label--fact {
  color: var(--color-electric-cyan);
}

.label--guide {
  color: var(--color-success-green);
}

.label--opinion {
  color: var(--color-racing-yellow);
}

.meta {
  color: var(--color-titanium-500);
  font-size: var(--text-meta);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-meta);
}

.intro {
  color: var(--color-titanium-300);
  font-size: var(--text-intro);
  line-height: var(--leading-intro);
}

.rule {
  width: 100%;
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, var(--color-electric-cyan), var(--color-border) 36%, transparent);
}

.stack {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: var(--space-4);
}

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

.stack--relaxed {
  gap: var(--space-6);
}

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

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

.button-group {
  display: flex;
  min-width: 0;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.button-group > * {
  min-width: 0;
}

.button,
.button--primary,
.button--secondary {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.125rem;
  border: var(--border-width) solid transparent;
  border-radius: var(--radius-control);
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-label);
  line-height: 1;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
  transition: background-color var(--transition-base), border-color var(--transition-base), color var(--transition-base), transform var(--transition-fast);
}

.button--primary,
.button:not(.button--secondary) {
  background-color: var(--color-racing-yellow);
  border-color: var(--color-racing-yellow);
  color: var(--color-carbon-950);
}

.button--primary:hover,
.button:not(.button--secondary):hover {
  background-color: var(--color-racing-yellow-hover);
  border-color: var(--color-racing-yellow-hover);
  color: var(--color-carbon-950);
}

.button--secondary {
  background-color: transparent;
  border-color: var(--color-border);
  color: var(--color-ice-white);
}

.button--secondary:hover {
  border-color: var(--color-electric-cyan);
  color: var(--color-electric-cyan);
}

.button:active,
.button--primary:active,
.button--secondary:active {
  transform: translateY(1px);
}

.field {
  display: grid;
  min-width: 0;
  gap: var(--space-2);
}

.field label,
.field__label {
  color: var(--color-ice-white);
  font-size: var(--text-meta);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-meta);
}

.input,
.select,
.textarea,
input:not([type="checkbox"]):not([type="radio"]):not([type="range"]):not([type="file"]),
select,
textarea {
  width: 100%;
  min-width: 0;
  padding: 0.75rem 0.875rem;
  background-color: var(--color-carbon-900);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-control);
  color: var(--color-ice-white);
  line-height: 1.5;
  transition: border-color var(--transition-base), background-color var(--transition-base);
}

.input:hover,
.select:hover,
.textarea:hover,
input:not([type="checkbox"]):not([type="radio"]):not([type="range"]):not([type="file"]):hover,
select:hover,
textarea:hover {
  border-color: var(--color-titanium-500);
}

.input:focus,
.select:focus,
.textarea:focus,
input:not([type="checkbox"]):not([type="radio"]):not([type="range"]):not([type="file"]):focus,
select:focus,
textarea:focus {
  border-color: var(--color-electric-cyan);
}

.field__hint {
  color: var(--color-titanium-500);
  font-size: var(--text-meta);
  line-height: var(--leading-meta);
}

.field__error {
  color: var(--color-alert-red);
  font-size: var(--text-meta);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-meta);
}

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

.check-control input {
  flex: 0 0 auto;
  margin-block-start: 0.25rem;
  accent-color: var(--color-electric-cyan);
}

.skip-link {
  position: fixed;
  z-index: 1000;
  inset-block-start: var(--space-3);
  inset-inline-start: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-racing-yellow);
  color: var(--color-carbon-950);
  font-weight: var(--weight-bold);
  transform: translateY(-200%);
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 760px) {
  :root {
    --container-padding: var(--container-padding-mobile);
    --gutter: var(--gutter-mobile);
    --section-space: 2.5rem;
    --header-padding-block: 0.75rem;
  }

  h1 {
    font-size: clamp(2.5rem, 13vw, 3.125rem);
    line-height: 1;
  }

  h2 {
    font-size: clamp(2rem, 10vw, 2.5rem);
  }

  h3 {
    font-size: clamp(1.625rem, 8vw, 2rem);
  }

  .panel,
  .card__body {
    padding: var(--space-4);
  }

  .button,
  .button--primary,
  .button--secondary {
    width: 100%;
  }

  .button-group {
    align-items: stretch;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms;
    animation-iteration-count: 1;
    scroll-behavior: auto;
    transition-duration: 0.01ms;
  }
}