:root {
  color-scheme: dark;
  --deep: #061c26;
  --panel: #0b2a38;
  --panel-soft: #103746;
  --line: #28505d;
  --ink: #edf8fa;
  --muted: #9db7be;
  --cyan: #55d8cf;
  --amber: #f5c15d;
  --sans: 'Avenir Next', 'Segoe UI', system-ui, sans-serif;
  --mono: 'Cascadia Mono', 'SFMono-Regular', Consolas, monospace;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--deep);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.65;
}
a {
  color: inherit;
}
.skip-link {
  position: fixed;
  z-index: 20;
  top: 1rem;
  left: 1rem;
  padding: 0.65rem 1rem;
  background: var(--ink);
  color: var(--deep);
  transform: translateY(-180%);
}
.skip-link:focus {
  transform: translateY(0);
}
.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.5rem;
  padding: 0 max(1.25rem, calc((100vw - 1180px) / 2));
  border-bottom: 1px solid color-mix(in srgb, var(--line), transparent 20%);
  background: color-mix(in srgb, var(--deep), transparent 8%);
  backdrop-filter: blur(14px);
}
.wordmark {
  text-decoration: none;
  font: 700 1.2rem var(--mono);
  letter-spacing: -0.05em;
}
.wordmark span,
footer strong span {
  color: var(--cyan);
}
nav {
  display: flex;
  gap: 1.5rem;
  font: 500 0.78rem var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
nav a {
  color: var(--muted);
  text-decoration: none;
}
nav a:hover,
nav a:focus-visible {
  color: var(--cyan);
}
.mobile-nav {
  position: relative;
  display: none;
}
.mobile-nav summary {
  display: grid;
  min-width: 4.5rem;
  min-height: 2.75rem;
  place-items: center;
  border: 1px solid var(--line);
  color: var(--ink);
  cursor: pointer;
  font: 600 0.78rem var(--mono);
  list-style: none;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.mobile-nav summary::-webkit-details-marker {
  display: none;
}
.mobile-nav summary:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}
.mobile-nav[open] summary {
  border-color: var(--cyan);
  background: var(--cyan);
  color: var(--deep);
}
.mobile-nav nav {
  position: absolute;
  top: calc(100% + 0.6rem);
  right: 0;
  display: grid;
  width: min(19rem, calc(100vw - 2.5rem));
  gap: 0;
  padding: 0.4rem;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 1rem 2.5rem rgb(0 0 0 / 35%);
}
.mobile-nav nav a {
  display: flex;
  min-height: 2.9rem;
  align-items: center;
  padding: 0.65rem 0.8rem;
  border-bottom: 1px solid var(--line);
}
.mobile-nav nav a:last-child {
  border-bottom: 0;
}
main,
footer {
  width: min(1180px, calc(100% - 2.5rem));
  margin-inline: auto;
}
.hero {
  min-height: 42rem;
  padding: clamp(5rem, 11vw, 9rem) 0 4rem;
}
.eyebrow,
.step-label {
  margin: 0 0 1rem;
  color: var(--cyan);
  font: 500 0.76rem var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
h1,
h2,
h3,
p {
  margin-top: 0;
}
h1 {
  max-width: 980px;
  margin-bottom: 1.75rem;
  font-size: clamp(3.1rem, 8vw, 7.2rem);
  line-height: 0.98;
  letter-spacing: -0.065em;
}
h1 em {
  color: var(--cyan);
  font-style: normal;
}
.lede {
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.32rem);
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 2rem 0 4.5rem;
}
.button {
  padding: 0.85rem 1.15rem;
  border: 1px solid var(--line);
  text-decoration: none;
  font: 600 0.84rem var(--mono);
}
.button.primary {
  border-color: var(--cyan);
  background: var(--cyan);
  color: var(--deep);
}
.release-pill {
  display: inline-flex;
  gap: 0.55rem;
  align-items: center;
  width: fit-content;
  margin-top: 1.1rem;
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  font: 600 0.76rem var(--mono);
  text-decoration: none;
}
.release-pill strong {
  color: var(--cyan);
}
.release-pill:hover,
.release-pill:focus-visible {
  border-color: var(--cyan);
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}
.button:hover,
.button:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}
.cycle-signal {
  display: block;
  width: calc(100% - 2rem);
  height: 2.5rem;
  margin: -2.8rem auto 0.35rem;
  overflow: visible;
}
.cycle-track {
  fill: none;
  stroke: var(--line);
  stroke-width: 2;
  stroke-dasharray: 0.035 0.025;
  animation: cycle-track 5.4s linear infinite;
}
.cycle-stops circle {
  fill: var(--panel);
  stroke: var(--cyan);
  stroke-width: 2;
}
.cycle-pulse {
  fill: var(--amber);
  filter: drop-shadow(0 0 7px color-mix(in srgb, var(--amber) 65%, transparent));
  animation: cycle-pulse 5.4s cubic-bezier(0.45, 0, 0.2, 1) infinite;
}
@keyframes cycle-track {
  to {
    stroke-dashoffset: -1;
  }
}
@keyframes cycle-pulse {
  0%,
  7% {
    transform: translateX(0);
  }
  29% {
    transform: translateX(235px);
  }
  55% {
    transform: translateX(471px);
  }
  82%,
  100% {
    transform: translateX(706px);
  }
}
.cycle {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  list-style: none;
}
.cycle li {
  position: relative;
  display: grid;
  gap: 0.25rem;
  padding: 1.35rem;
  border-right: 1px solid var(--line);
}
.cycle li:last-child {
  border: 0;
}
.cycle li:not(:last-child)::after {
  content: '→';
  position: absolute;
  z-index: 1;
  right: -0.65rem;
  top: 50%;
  width: 1.3rem;
  background: var(--deep);
  color: var(--cyan);
  text-align: center;
  transform: translateY(-50%);
}
.cycle span,
.deploy-grid span {
  color: var(--muted);
  font: 500 0.7rem var(--mono);
}
.cycle strong {
  font-size: 1.12rem;
}
.cycle small {
  color: var(--muted);
  font: 400 0.75rem var(--mono);
}
.cycle .change {
  background: color-mix(in srgb, var(--amber), transparent 92%);
}
.cycle .change strong {
  color: var(--amber);
}
.section {
  padding: clamp(5rem, 10vw, 8rem) 0;
  border-top: 1px solid var(--line);
}
.section-heading {
  max-width: 760px;
  margin-bottom: 2.5rem;
}
h2 {
  margin-bottom: 1rem;
  font-size: clamp(2.25rem, 5vw, 4.4rem);
  line-height: 1.05;
  letter-spacing: -0.045em;
}
.section-heading > p:last-child {
  color: var(--muted);
  font-size: 1.05rem;
}
.command-grid,
.deploy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.command-grid article,
.deploy-grid article {
  min-width: 0;
  padding: 1.5rem;
  background: var(--panel);
}
h3 {
  margin-bottom: 0.75rem;
  font-size: 1.15rem;
}
code {
  color: var(--cyan);
  font-family: var(--mono);
  font-size: 0.88em;
}
.notice {
  display: flex;
  gap: 1rem;
  margin-top: 1.25rem;
  padding: 1.25rem 1.5rem;
  border-left: 3px solid var(--amber);
  background: color-mix(in srgb, var(--amber), transparent 93%);
}
.notice strong {
  color: var(--amber);
  white-space: nowrap;
}
.notice p {
  margin: 0;
  color: var(--muted);
}
.provider-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  margin: 0;
  padding: 1px;
  background: var(--line);
  list-style: none;
}
.provider-list li {
  padding: 0.9rem 1rem;
  background: var(--panel);
  font: 500 0.8rem var(--mono);
}
.text-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  margin-top: 2rem;
}
.text-links a,
.deploy-grid a,
footer a {
  color: var(--cyan);
  text-underline-offset: 0.25em;
}
.diagram-section iframe {
  width: 100%;
  height: 720px;
  border: 1px solid var(--line);
  background: var(--panel);
}
.diagram-link {
  display: grid;
  gap: 0.25rem;
  margin-top: 1rem;
  padding: 1.2rem 1.4rem;
  border: 1px solid var(--line);
  color: var(--cyan);
  text-decoration: none;
}
.diagram-link span {
  color: var(--muted);
  font-size: 0.9rem;
}
.diagram-link:hover,
.diagram-link:focus-visible {
  border-color: var(--cyan);
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}
.deploy-grid p {
  color: var(--muted);
}
.safety-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}
.safety-list li {
  padding: 1.4rem 1.5rem 1.4rem 0;
  border-bottom: 1px solid var(--line);
}
.safety-list li:nth-child(odd) {
  margin-right: 1.5rem;
  border-right: 1px solid var(--line);
}
.safety-list strong {
  display: block;
  margin-bottom: 0.4rem;
  font: 600 0.8rem var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.safety-list p {
  margin: 0;
  color: var(--muted);
}
footer {
  display: grid;
  grid-template-columns: 1fr 2fr auto;
  align-items: center;
  gap: 2rem;
  padding-block: 3rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
}
footer strong {
  color: var(--ink);
  font: 700 1.1rem var(--mono);
}
footer p {
  margin: 0;
}

@media (min-width: 100rem) {
  .site-header {
    padding-inline: max(2rem, calc((100vw - 1520px) / 2));
  }
  main,
  footer {
    width: min(1520px, calc(100% - 4rem));
  }
  .hero {
    min-height: min(50rem, calc(100svh - 4.5rem));
  }
  h1 {
    max-width: 1120px;
  }
  .section-heading {
    max-width: 880px;
  }
  .diagram-section iframe {
    height: 54rem;
  }
}

@media (max-width: 760px) {
  .site-header {
    min-height: 4rem;
    padding-block: 1rem;
  }
  .desktop-nav {
    display: none;
  }
  .mobile-nav {
    display: block;
  }
  .hero {
    min-height: auto;
    padding-top: 5rem;
  }
  .cycle {
    grid-template-columns: 1fr 1fr;
  }
  .cycle li:nth-child(2) {
    border-right: 0;
  }
  .cycle li:nth-child(2)::after {
    display: none;
  }
  .cycle li:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }
  .command-grid,
  .deploy-grid {
    grid-template-columns: 1fr;
  }
  .provider-list {
    grid-template-columns: repeat(2, 1fr);
  }
  .provider-list li:last-child {
    grid-column: 1 / -1;
  }
  .safety-list {
    grid-template-columns: 1fr;
  }
  .safety-list li:nth-child(odd) {
    margin: 0;
    border-right: 0;
  }
  .notice {
    display: block;
  }
  .notice strong {
    display: block;
    margin-bottom: 0.5rem;
  }
  footer {
    grid-template-columns: 1fr;
    gap: 0.6rem;
  }
  .diagram-section iframe {
    display: none;
  }
}

@media (orientation: landscape) and (max-height: 560px) {
  .hero {
    min-height: auto;
    padding-block: 1.25rem 2rem;
  }
  h1 {
    font-size: clamp(2.75rem, 7vw, 3.5rem);
  }
  .lede {
    margin-block: 0.65rem;
  }
  .actions {
    margin-block: 0.65rem 1.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .cycle-signal * {
    animation: none !important;
  }
  .cycle-pulse {
    transform: translateX(706px);
  }
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

/* Routing-chart signature: the update cycle reads as one continuous path. */
::selection {
  background: var(--cyan);
  color: var(--deep);
}
h1,
h2 {
  text-wrap: balance;
}
p {
  text-wrap: pretty;
}
.cycle {
  position: relative;
  border-top: 0.3rem solid var(--cyan);
  box-shadow: 0 -1rem 3rem color-mix(in srgb, var(--cyan) 9%, transparent);
}
.cycle .change {
  background: linear-gradient(
    145deg,
    color-mix(in srgb, var(--cyan) 16%, var(--panel)),
    var(--panel-soft)
  );
}