:root {
  /* Backgrounds */
  --cursor-bg-content: #181818;
  --cursor-bg-chrome: #141414;
  --cursor-bg-elevated: #1e1e1e;

  /* Text (base #E4E4E4 at alpha levels) */
  --cursor-text-primary: #e4e4e4;
  --cursor-text-secondary: rgba(228, 228, 228, 0.55);
  --cursor-text-muted: rgba(228, 228, 228, 0.35);

  /* Surfaces & borders */
  --cursor-surface: rgba(228, 228, 228, 0.04);
  --cursor-border-subtle: rgba(228, 228, 228, 0.07);
  --cursor-border-focus: rgba(228, 228, 228, 0.15);

  /* Accents */
  --cursor-accent-blue: #81a1c1;
  --cursor-accent-cyan: #88c0d0;
  --cursor-accent-green: #3fa266;
  --cursor-on-accent: #191c22;

  /* Typography */
  --cursor-font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  /* Layout */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4.5rem;
  --max-width: 68rem;
  --radius: 0.5rem;
  --radius-lg: 0.75rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--cursor-font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--cursor-text-primary);
  background-color: var(--cursor-bg-content);
  color-scheme: dark;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--cursor-accent-blue);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--cursor-accent-cyan);
}

a:focus-visible {
  outline: 2px solid var(--cursor-accent-cyan);
  outline-offset: 2px;
  border-radius: 2px;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--cursor-bg-chrome);
  border-bottom: 1px solid var(--cursor-border-subtle);
  backdrop-filter: blur(8px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-md) var(--space-lg);
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--cursor-text-primary);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.site-logo:hover {
  color: var(--cursor-text-primary);
}

.site-logo__icon {
  width: 1.5rem;
  height: 1.5rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.site-nav a {
  font-size: 0.875rem;
  color: var(--cursor-text-secondary);
}

.site-nav a:hover {
  color: var(--cursor-text-primary);
}

/* Layout */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

section {
  padding: var(--space-3xl) 0;
}

section + section {
  border-top: 1px solid var(--cursor-border-subtle);
}

.section-label {
  display: inline-block;
  margin-bottom: var(--space-md);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cursor-accent-cyan);
}

.section-title {
  margin: 0 0 var(--space-lg);
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.25;
}

.section-lead {
  margin: 0;
  max-width: 38rem;
  font-size: 1.0625rem;
  color: var(--cursor-text-secondary);
}

/* Hero */

.hero {
  padding: var(--space-3xl) 0 calc(var(--space-3xl) + var(--space-lg));
}

.hero__content {
  max-width: 40rem;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  padding: var(--space-xs) var(--space-sm);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--cursor-accent-green);
  background-color: rgba(63, 162, 102, 0.1);
  border: 1px solid rgba(63, 162, 102, 0.25);
  border-radius: 999px;
}

.hero__badge::before {
  content: "";
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background-color: var(--cursor-accent-green);
}

.hero__title {
  margin: 0 0 var(--space-lg);
  font-size: clamp(2rem, 6vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.15;
}

.hero__subtitle {
  margin: 0 0 var(--space-xl);
  font-size: clamp(1.0625rem, 2.5vw, 1.25rem);
  color: var(--cursor-text-secondary);
  line-height: 1.55;
}

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

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.7rem 1.25rem;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    background-color 0.15s ease,
    border-color 0.15s ease,
    color 0.15s ease;
}

.btn--primary {
  color: var(--cursor-on-accent);
  background-color: var(--cursor-accent-blue);
  border-color: var(--cursor-accent-blue);
}

.btn--primary:hover {
  color: var(--cursor-on-accent);
  background-color: var(--cursor-accent-cyan);
  border-color: var(--cursor-accent-cyan);
}

.btn--secondary {
  color: var(--cursor-text-primary);
  background-color: var(--cursor-surface);
  border-color: var(--cursor-border-focus);
}

.btn--secondary:hover {
  color: var(--cursor-text-primary);
  background-color: var(--cursor-bg-elevated);
  border-color: var(--cursor-border-focus);
}

/* Cards */

.card-grid {
  display: grid;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

@media (min-width: 640px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .card-grid--three {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  padding: var(--space-xl);
  background-color: var(--cursor-bg-chrome);
  border: 1px solid var(--cursor-border-subtle);
  border-radius: var(--radius-lg);
  transition:
    border-color 0.15s ease,
    background-color 0.15s ease;
}

.card:hover {
  background-color: var(--cursor-bg-elevated);
  border-color: var(--cursor-border-focus);
}

.card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  margin-bottom: var(--space-md);
  border-radius: var(--radius);
  background-color: var(--cursor-surface);
  border: 1px solid var(--cursor-border-subtle);
  color: var(--cursor-accent-cyan);
}

.card__title {
  margin: 0 0 var(--space-sm);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.card__text {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--cursor-text-secondary);
  line-height: 1.55;
}

/* Problem */

.problem__body {
  margin-top: var(--space-xl);
  max-width: 38rem;
}

.problem__body p {
  margin: 0 0 var(--space-md);
  color: var(--cursor-text-secondary);
  font-size: 1.0625rem;
}

.problem__body p:last-child {
  margin-bottom: 0;
}

/* How it works */

.steps {
  display: grid;
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

@media (min-width: 768px) {
  .steps {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
  }
}

.step {
  position: relative;
}

.step__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  margin-bottom: var(--space-md);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--cursor-accent-blue);
  background-color: rgba(129, 161, 193, 0.12);
  border: 1px solid rgba(129, 161, 193, 0.3);
  border-radius: 50%;
}

.step__title {
  margin: 0 0 var(--space-sm);
  font-size: 1rem;
  font-weight: 600;
}

.step__text {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--cursor-text-secondary);
}

.diagram-wrap {
  margin-top: var(--space-2xl);
  padding: var(--space-xl);
  background-color: var(--cursor-bg-chrome);
  border: 1px solid var(--cursor-border-subtle);
  border-radius: var(--radius-lg);
  text-align: center;
}

.diagram-wrap img {
  margin: 0 auto;
  max-width: 36rem;
}

/* Who it's for */

.audience-list {
  display: grid;
  gap: var(--space-md);
  margin-top: var(--space-2xl);
  padding: 0;
  list-style: none;
}

@media (min-width: 640px) {
  .audience-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

.audience-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg);
  background-color: var(--cursor-bg-chrome);
  border: 1px solid var(--cursor-border-subtle);
  border-radius: var(--radius-lg);
  font-size: 0.9375rem;
  color: var(--cursor-text-secondary);
}

.audience-list li::before {
  content: "";
  flex-shrink: 0;
  width: 0.375rem;
  height: 0.375rem;
  margin-top: 0.55rem;
  border-radius: 50%;
  background-color: var(--cursor-accent-green);
}

/* Developers */

.dev-panel {
  margin-top: var(--space-2xl);
  padding: var(--space-xl);
  background-color: var(--cursor-bg-chrome);
  border: 1px solid var(--cursor-border-subtle);
  border-radius: var(--radius-lg);
}

.dev-panel__tools {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.dev-panel__tag {
  padding: var(--space-xs) var(--space-sm);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--cursor-accent-cyan);
  background-color: rgba(136, 192, 208, 0.1);
  border: 1px solid rgba(136, 192, 208, 0.25);
  border-radius: var(--radius);
}

.dev-panel__text {
  margin: 0 0 var(--space-lg);
  font-size: 0.9375rem;
  color: var(--cursor-text-secondary);
}

.dev-panel__text code {
  padding: 0.1em 0.35em;
  font-family: ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, monospace;
  font-size: 0.875em;
  color: var(--cursor-accent-cyan);
  background-color: var(--cursor-surface);
  border: 1px solid var(--cursor-border-subtle);
  border-radius: 0.25rem;
}

.dev-panel__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

/* Footer */

.site-footer {
  padding: var(--space-2xl) 0;
  background-color: var(--cursor-bg-chrome);
  border-top: 1px solid var(--cursor-border-subtle);
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

@media (min-width: 640px) {
  .site-footer__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.site-footer__brand {
  margin: 0;
  font-size: 0.875rem;
  color: var(--cursor-text-muted);
}

.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md) var(--space-lg);
}

.site-footer__nav a {
  font-size: 0.875rem;
  color: var(--cursor-text-secondary);
}

.site-footer__nav a:hover {
  color: var(--cursor-text-primary);
}