:root {
  --color-black: #0e1013;
  --color-carbon: #111317;
  --color-charcoal: #16191e;
  --color-cast-iron: #1f242d;
  --color-slate: #252b35;
  --color-wireframe: #3a4250;
  --color-amber: #ff9900;
  --color-lime: #84cc16;
  --color-cobalt: #2563eb;
  --color-chalk: #f3f4f6;
  --color-concrete: #9ca3af;
  --color-focus: #ffb84d;

  --font-heading: "Barlow Condensed", "Arial Narrow", sans-serif;
  --font-body: "Barlow", "Inter", Arial, sans-serif;

  --text-12: 0.75rem;
  --text-14: 0.875rem;
  --text-16: 1rem;
  --text-18: 1.125rem;
  --text-24: 1.5rem;
  --text-32: 2rem;
  --text-48: 3rem;
  --text-64: 4rem;

  --leading-meta: 1.2;
  --leading-utility: 1.4;
  --leading-body: 1.55;
  --leading-emphasis: 1.45;
  --leading-heading: 1.05;
  --leading-display: 0.92;

  --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;

  --gutter: 1rem;
  --container-width: calc(100% - (var(--gutter) * 2));
  --container-max: 77.5rem;

  --radius-none: 0;
  --radius-small: 0.125rem;

  --border-default: 1px solid var(--color-wireframe);
  --border-amber: 3px solid var(--color-amber);
  --border-lime: 3px solid var(--color-lime);

  --shadow-hard: 0 4px 0 rgba(0, 0, 0, 0.45);

  --control-height: 3rem;
  --transition-fast: 150ms ease-out;
  --transition-linear: 140ms linear;
}

@media (min-width: 48rem) {
  :root {
    --gutter: 2rem;
  }
}

@media (min-width: 80rem) {
  :root {
    --gutter: 2.5rem;
    --container-width: min(calc(100% - (var(--gutter) * 2)), var(--container-max));
  }
}

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

html {
  min-width: 20rem;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-6);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  min-width: 20rem;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background: var(--color-black);
  color: var(--color-chalk);
  font-family: var(--font-body);
  font-size: var(--text-16);
  font-weight: 400;
  line-height: var(--leading-body);
  text-rendering: optimizeLegibility;
}

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

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

img,
video {
  height: auto;
}

svg {
  fill: currentColor;
}

a {
  color: var(--color-chalk);
  text-decoration-color: var(--color-amber);
  text-decoration-thickness: 0.125rem;
  text-underline-offset: 0.18em;
  transition:
    color var(--transition-fast),
    text-decoration-color var(--transition-fast);
}

a:hover {
  color: var(--color-chalk);
  text-decoration-color: var(--color-chalk);
}

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

button,
input,
select,
textarea {
  margin: 0;
  border-radius: var(--radius-none);
  color: inherit;
  font: inherit;
}

button,
[type="button"],
[type="submit"],
[type="reset"] {
  min-height: var(--control-height);
  border: 0;
  cursor: pointer;
}

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

input,
select,
textarea {
  width: 100%;
  border: var(--border-default);
  background: var(--color-carbon);
  color: var(--color-chalk);
}

input,
select {
  min-height: var(--control-height);
  padding: 0 var(--space-3);
}

textarea {
  min-height: 8rem;
  padding: var(--space-3);
  resize: vertical;
}

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

select {
  appearance: auto;
}

label {
  display: inline-block;
  margin-block-end: var(--space-2);
  color: var(--color-chalk);
  font-family: var(--font-heading);
  font-size: var(--text-14);
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: var(--leading-utility);
  text-transform: uppercase;
}

fieldset {
  margin: 0;
  padding: 0;
  border: 0;
}

legend {
  padding: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  border-spacing: 0;
  font-variant-numeric: tabular-nums;
}

th,
td {
  padding: var(--space-3);
  border-bottom: var(--border-default);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--color-slate);
  color: var(--color-chalk);
  font-family: var(--font-heading);
  font-size: var(--text-14);
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: var(--leading-utility);
  text-transform: uppercase;
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 var(--space-4);
  color: var(--color-chalk);
  font-family: var(--font-heading);
  font-weight: 800;
  letter-spacing: 0.05em;
  line-height: var(--leading-heading);
  text-transform: uppercase;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.5rem, 7vw, var(--text-64));
  line-height: var(--leading-display);
}

h2 {
  font-size: clamp(2rem, 5vw, var(--text-48));
  line-height: 0.98;
}

h3 {
  font-size: clamp(1.5rem, 3vw, var(--text-32));
}

h4 {
  font-size: var(--text-24);
}

h5,
h6 {
  font-size: var(--text-18);
}

p {
  margin: 0 0 var(--space-4);
}

ul,
ol {
  margin: 0 0 var(--space-4);
  padding-inline-start: 1.25rem;
}

li {
  min-width: 0;
}

blockquote {
  margin: 0 0 var(--space-5);
  padding: var(--space-4);
  border-left: var(--border-amber);
  background: var(--color-charcoal);
  color: var(--color-chalk);
}

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

figure {
  margin: 0 0 var(--space-5);
}

figcaption {
  margin-block-start: var(--space-2);
  color: var(--color-concrete);
  font-size: var(--text-14);
  line-height: var(--leading-utility);
}

dl {
  margin: 0 0 var(--space-4);
}

dt {
  color: var(--color-chalk);
  font-family: var(--font-heading);
  font-size: var(--text-14);
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: var(--leading-utility);
  text-transform: uppercase;
}

dd {
  margin: 0 0 var(--space-3);
  color: var(--color-concrete);
}

small {
  font-size: var(--text-14);
  line-height: var(--leading-utility);
}

strong {
  color: var(--color-chalk);
  font-weight: 600;
}

code,
kbd,
samp {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

::selection {
  background: var(--color-amber);
  color: var(--color-carbon);
}

:focus {
  outline: none;
}

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

[hidden] {
  display: none !important;
}

.container {
  width: var(--container-width);
  margin-inline: auto;
}

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

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

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

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

.panel {
  min-width: 0;
  padding: var(--space-5);
  border: var(--border-default);
  background: var(--color-charcoal);
}

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

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

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

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

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

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

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

.content-list {
  margin: 0 0 var(--space-4);
  padding-inline-start: 1.25rem;
}

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

.section-rule {
  border-top: var(--border-default);
}

.section-index {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-3);
  color: var(--color-concrete);
  font-family: var(--font-heading);
  font-size: var(--text-12);
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: var(--leading-meta);
  text-transform: uppercase;
}

.section-index::after {
  width: 3rem;
  height: 1px;
  background: var(--color-wireframe);
  content: "";
}

.eyebrow {
  margin: 0 0 var(--space-2);
  color: var(--color-concrete);
  font-family: var(--font-heading);
  font-size: var(--text-12);
  font-weight: 700;
  letter-spacing: 0.09em;
  line-height: var(--leading-meta);
  text-transform: uppercase;
}

.meta {
  color: var(--color-concrete);
  font-size: var(--text-14);
  line-height: var(--leading-utility);
}

.numeric {
  font-variant-numeric: tabular-nums;
}

.button {
  display: inline-flex;
  min-width: 0;
  min-height: var(--control-height);
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0 var(--space-4);
  border: 1px solid transparent;
  background: transparent;
  color: var(--color-chalk);
  font-family: var(--font-heading);
  font-size: var(--text-14);
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast),
    transform var(--transition-linear);
}

.button:hover {
  color: var(--color-chalk);
  text-decoration: none;
}

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

.button--primary {
  border-color: var(--color-amber);
  background: var(--color-amber);
  color: var(--color-carbon);
}

.button--primary:hover {
  border-color: var(--color-focus);
  background: var(--color-focus);
  color: var(--color-carbon);
}

.button--secondary {
  border-color: var(--color-wireframe);
  background: transparent;
  color: var(--color-chalk);
}

.button--secondary:hover {
  border-color: var(--color-chalk);
  background: var(--color-cast-iron);
}

.button--lime {
  border-color: var(--color-lime);
  background: var(--color-lime);
  color: var(--color-carbon);
}

.button--cobalt {
  border-color: var(--color-cobalt);
  background: var(--color-cobalt);
  color: var(--color-chalk);
}

.tag {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-2);
  border: var(--border-default);
  background: var(--color-cast-iron);
  color: var(--color-chalk);
  font-family: var(--font-heading);
  font-size: var(--text-12);
  font-weight: 700;
  letter-spacing: 0.07em;
  line-height: var(--leading-meta);
  text-transform: uppercase;
}

.tag::before {
  width: 0.1875rem;
  align-self: stretch;
  background: var(--color-amber);
  content: "";
}

.tag--live::before {
  background: var(--color-lime);
}

.tag--info::before {
  background: var(--color-cobalt);
}

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

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

.field-note,
.field-error {
  margin: 0;
  font-size: var(--text-14);
  line-height: var(--leading-utility);
}

.field-note {
  color: var(--color-concrete);
}

.field-error {
  color: var(--color-focus);
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: var(--space-2);
  left: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--color-amber);
  color: var(--color-carbon);
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-decoration: none;
  text-transform: uppercase;
  transform: translateY(-150%);
}

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

@media (min-width: 48rem) {
  .panel {
    padding: var(--space-6);
  }
}

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

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