:root {
  color-scheme: dark;
  --bg: #07111b;
  --bg-deep: #040b12;
  --surface: #0c1a27;
  --border: #244052;
  --text: #edf8ff;
  --muted: #a9c0ce;
  --primary: #38bdf8;
  --primary-strong: #7dd3fc;
  --accent: #fb923c;
  --danger: #fda4af;
  --max-width: 1180px;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 78% 4%, rgb(14 165 233 / 11%), transparent 28rem),
    var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
}

a {
  color: inherit;
}

a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 1rem;
  left: 1rem;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  background: var(--text);
  color: var(--bg-deep);
  font-weight: 700;
  transform: translateY(-200%);
}

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

.site-header,
main,
footer {
  width: min(calc(100% - 3rem), var(--max-width));
  margin-inline: auto;
}

.site-header {
  display: flex;
  min-height: 5.5rem;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  border-bottom: 1px solid var(--border);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--text);
  font-weight: 750;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border: 1px solid rgb(56 189 248 / 45%);
  border-radius: 0.45rem;
  background: rgb(56 189 248 / 10%);
  color: var(--primary-strong);
  font-family: var(--mono);
  font-size: 0.78rem;
}

nav {
  display: flex;
  align-items: center;
  gap: 1.6rem;
}

nav a,
footer a {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 650;
  text-decoration: none;
  transition: color 180ms ease, border-color 180ms ease, background 180ms ease;
}

nav a:hover,
footer a:hover {
  color: var(--text);
}

nav .nav-cta {
  padding: 0.58rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
}

nav .nav-cta:hover {
  border-color: var(--primary);
  background: rgb(56 189 248 / 8%);
}

.hero {
  display: grid;
  min-height: 42rem;
  grid-template-columns: 1.08fr 0.92fr;
  align-items: center;
  gap: clamp(3rem, 7vw, 6rem);
  padding-block: 6rem;
}

.hero > *,
.split > *,
.policy-section > * {
  min-width: 0;
}

.eyebrow,
.kicker {
  margin: 0 0 1rem;
  color: var(--primary-strong);
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.eyebrow::before {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 0.3rem rgb(56 189 248 / 12%);
  content: "";
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  line-height: 1.08;
}

h1 {
  max-width: 13ch;
  margin-bottom: 1.7rem;
  font-size: clamp(3rem, 6vw, 5.3rem);
  letter-spacing: -0.065em;
  overflow-wrap: anywhere;
}

h1 em {
  color: var(--primary-strong);
  font-style: normal;
}

h2 {
  margin-bottom: 1.2rem;
  font-size: clamp(2rem, 4vw, 3.35rem);
  letter-spacing: -0.045em;
}

h3 {
  margin-bottom: 0.7rem;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.hero-lede,
.section-heading > p:last-child,
.policy-copy > p,
.boundary > p:last-child,
.cta > p {
  max-width: 65ch;
  color: var(--muted);
}

.hero-lede {
  max-width: 58ch;
  margin-bottom: 2rem;
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.button {
  display: inline-flex;
  min-height: 2.9rem;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.1rem;
  border: 1px solid transparent;
  border-radius: 0.55rem;
  font-size: 0.9rem;
  font-weight: 750;
  text-decoration: none;
  transition: border-color 180ms ease, background 180ms ease, color 180ms ease;
}

.button-primary {
  background: var(--primary);
  color: #04283a;
}

.button-primary:hover {
  background: var(--primary-strong);
}

.button-secondary {
  border-color: var(--border);
  background: rgb(255 255 255 / 2%);
  color: var(--text);
}

.button-secondary:hover {
  border-color: var(--primary);
  background: rgb(56 189 248 / 7%);
}

.support-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1.4rem;
  margin: 2rem 0 0;
  padding: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.73rem;
  list-style: none;
}

.support-list li::before {
  display: inline-block;
  width: 0.4rem;
  height: 0.4rem;
  margin-right: 0.45rem;
  border-radius: 50%;
  background: var(--primary);
  content: "";
  vertical-align: 0.05rem;
}

.terminal,
.code-panel {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  background: var(--bg-deep);
  box-shadow: 0 2rem 5rem rgb(0 0 0 / 32%);
}

.terminal {
  position: relative;
  max-width: 100%;
}

.terminal::before {
  position: absolute;
  z-index: -1;
  inset: -2rem;
  border-radius: 50%;
  background: rgb(56 189 248 / 9%);
  content: "";
  filter: blur(3rem);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 0.42rem;
  min-height: 2.65rem;
  padding-inline: 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.terminal-bar::before {
  width: 2.5rem;
  height: 0.55rem;
  background: radial-gradient(circle, #496272 0 0.25rem, transparent 0.28rem) 0 0 / 0.83rem 100%;
  content: "";
}

.terminal-bar p {
  margin: 0 0 0 0.45rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
}

pre {
  margin: 0;
  overflow-wrap: anywhere;
  font-family: var(--mono);
  line-height: 1.7;
  white-space: pre-wrap;
}

.terminal pre {
  min-height: 20rem;
  padding: 1.5rem;
  color: #d9e9f2;
  font-size: clamp(0.68rem, 1.3vw, 0.78rem);
}

.prompt,
.hint,
.key {
  color: var(--primary-strong);
}

.accent {
  color: var(--accent);
}

.failure {
  color: var(--danger);
}

.muted {
  color: var(--muted);
}

.section {
  padding-block: 6.5rem;
  border-top: 1px solid var(--border);
  scroll-margin-top: 1rem;
}

.section-heading {
  max-width: 46rem;
  margin-bottom: 3rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.feature-card {
  min-height: 18rem;
  padding: 1.7rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: linear-gradient(145deg, rgb(255 255 255 / 3%), transparent);
}

.feature-card p {
  color: var(--muted);
}

.feature-card code,
.mode-list code {
  color: var(--primary-strong);
  font-family: var(--mono);
  font-size: 0.78rem;
}

.feature-index {
  display: block;
  margin-bottom: 4rem;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.72rem;
}

.split {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(3rem, 8vw, 7rem);
}

.steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps > li {
  padding: 0 0 2.2rem;
}

.steps > li + li {
  padding-top: 2.2rem;
  border-top: 1px solid var(--border);
}

.step-heading {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.step-heading span {
  display: grid;
  width: 1.8rem;
  height: 1.8rem;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--primary-strong);
  font-family: var(--mono);
  font-size: 0.7rem;
}

.step-heading h3 {
  margin: 0;
}

.steps pre {
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--border);
  border-radius: 0.55rem;
  background: var(--bg-deep);
  color: var(--text);
  font-size: 0.78rem;
}

.mode-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.6rem;
}

.mode-list p {
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 0.85rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
}

.mode-list span {
  color: var(--muted);
  font-size: 0.78rem;
}

.policy-section {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  align-items: center;
  gap: clamp(3rem, 8vw, 7rem);
}

.text-link {
  color: var(--primary-strong);
  font-weight: 700;
  text-underline-offset: 0.25rem;
}

.code-panel > p {
  margin: 0;
  padding: 0.8rem 1.2rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.7rem;
}

.code-panel pre {
  padding: 1.4rem;
  color: #d9e9f2;
  font-size: 0.76rem;
}

.flow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.flow > div {
  position: relative;
  padding: 2rem 2rem 1rem 0;
  border-top: 1px solid var(--primary);
}

.flow > div:not(:last-child) {
  margin-right: 2rem;
}

.flow span {
  display: block;
  margin-bottom: 3rem;
  color: var(--primary-strong);
  font-family: var(--mono);
  font-size: 0.7rem;
}

.flow p {
  color: var(--muted);
}

.boundary {
  position: relative;
  margin-block: 2rem 7rem;
  padding: clamp(2rem, 5vw, 4rem);
  overflow: hidden;
  border: 1px solid rgb(251 146 60 / 42%);
  border-radius: 0.9rem;
  background: linear-gradient(135deg, rgb(251 146 60 / 10%), rgb(251 146 60 / 2%));
}

.boundary::after {
  position: absolute;
  right: -2rem;
  bottom: -7rem;
  color: rgb(251 146 60 / 7%);
  content: "!";
  font-family: var(--mono);
  font-size: 18rem;
  font-weight: 800;
  line-height: 1;
}

.boundary h2,
.boundary p {
  position: relative;
  z-index: 1;
  max-width: 48rem;
}

.boundary .kicker {
  color: var(--accent);
}

.cta {
  padding: 7rem 2rem;
  border-top: 1px solid var(--border);
  text-align: center;
}

.cta p {
  margin-inline: auto;
}

.cta .hero-actions {
  justify-content: center;
  margin-top: 2rem;
}

footer {
  display: flex;
  min-height: 8rem;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.8rem;
}

footer p {
  margin: 0;
}

footer div {
  display: flex;
  gap: 1.2rem;
}

@media (max-width: 900px) {
  nav > a:not(.nav-cta) {
    display: none;
  }

  .hero,
  .split,
  .policy-section {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-block: 4.5rem;
  }

  .hero-copy {
    max-width: 44rem;
  }

  .terminal {
    max-width: 42rem;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .feature-card {
    min-height: 0;
  }

  .feature-index {
    margin-bottom: 2.5rem;
  }
}

@media (max-width: 640px) {
  .site-header,
  main,
  footer {
    width: min(calc(100% - 2rem), var(--max-width));
  }

  .site-header {
    min-height: 4.75rem;
  }

  nav .nav-cta {
    padding: 0.5rem 0.7rem;
  }

  h1 {
    font-size: clamp(2.65rem, 14vw, 4rem);
  }

  .hero {
    gap: 3.5rem;
    padding-block: 3.5rem 5rem;
  }

  .section {
    padding-block: 5rem;
  }

  .terminal pre,
  .code-panel pre {
    padding: 1rem;
    font-size: 0.67rem;
  }

  .mode-list,
  .flow {
    grid-template-columns: 1fr;
  }

  .flow > div:not(:last-child) {
    margin-right: 0;
  }

  .flow span {
    margin-bottom: 1.8rem;
  }

  .boundary {
    margin-bottom: 5rem;
  }

  footer {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding-block: 2rem;
  }
}

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

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