:root {
  color-scheme: light dark;
  --color-bg: #f8faf8;
  --color-surface: #ffffff;
  --color-surface-muted: #eef3f0;
  --color-text: #17211c;
  --color-muted: #5d6d64;
  --color-border: #d7e0da;
  --color-primary: #136f63;
  --color-primary-strong: #0a4f47;
  --color-primary-soft: #dff3ed;
  --color-blue: #1d5f9f;
  --color-blue-soft: #e2eefb;
  --color-warning: #946200;
  --color-warning-soft: #fff3d2;
  --color-code-bg: #101816;
  --color-code-text: #dceee8;
  --shadow-panel: 0 20px 60px rgb(23 33 28 / 10%);
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 8px;
  --space-page: clamp(1rem, 4vw, 3rem);
  --content-max: 1120px;
  --font-sans: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0f1513;
    --color-surface: #151d1a;
    --color-surface-muted: #1d2824;
    --color-text: #edf5f0;
    --color-muted: #a7b8ae;
    --color-border: #30413a;
    --color-primary: #58c7b7;
    --color-primary-strong: #8de3d4;
    --color-primary-soft: #173932;
    --color-blue: #86bff4;
    --color-blue-soft: #18324a;
    --color-warning: #f4c766;
    --color-warning-soft: #3d2d12;
    --color-code-bg: #090d0c;
    --color-code-text: #e6f4ef;
    --shadow-panel: 0 24px 70px rgb(0 0 0 / 32%);
  }
}

* {
  box-sizing: border-box;
}

html {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.5;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(180deg, var(--color-surface-muted), transparent 26rem),
    var(--color-bg);
}

a {
  color: var(--color-primary-strong);
  text-decoration-color: color-mix(in srgb, var(--color-primary) 45%, transparent);
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-color: currentColor;
}

code {
  font-family: var(--font-mono);
}

pre {
  margin: 1rem 0 0;
  overflow-x: auto;
  border-radius: var(--radius-md);
  background: var(--color-code-bg);
  color: var(--color-code-text);
  font: 0.86rem/1.55 var(--font-mono);
}

pre code {
  display: block;
  padding: 1rem;
  white-space: pre;
}

.site-header,
.hero,
.section,
.site-footer {
  width: min(100% - (var(--space-page) * 2), var(--content-max));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 0;
}

.brand,
.site-nav,
.site-footer nav {
  display: flex;
  align-items: center;
}

.brand {
  gap: 0.65rem;
  color: var(--color-text);
  font-weight: 700;
  text-decoration: none;
}

.brand-mark {
  width: 2.35rem;
  height: 2.35rem;
  flex: 0 0 auto;
}

.logo-moon {
  fill: var(--color-primary-soft);
  stroke: var(--color-primary-strong);
  stroke-width: 2.2;
}

.logo-crater {
  fill: none;
  stroke: color-mix(in srgb, var(--color-primary-strong) 40%, transparent);
  stroke-linecap: round;
  stroke-width: 1.7;
}

.logo-crater.secondary {
  stroke-width: 1.35;
}

.logo-bridge-arch,
.logo-bridge-deck,
.logo-bridge-leg {
  fill: none;
  stroke: var(--color-primary-strong);
  stroke-linecap: round;
  stroke-linejoin: round;
}

.logo-bridge-arch {
  stroke-width: 2.2;
}

.logo-bridge-deck {
  stroke-width: 2.4;
}

.logo-bridge-leg {
  stroke-width: 1.8;
}

.logo-endpoint {
  fill: var(--color-surface);
  stroke: var(--color-primary-strong);
  stroke-width: 1.7;
}

.site-nav {
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.9rem;
  font-size: 0.94rem;
}

.site-nav a,
.site-footer a {
  color: var(--color-muted);
  text-decoration: none;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.98fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
  min-height: calc(100svh - 5rem);
  padding: clamp(2.5rem, 8vw, 6rem) 0;
}

.eyebrow {
  margin: 0 0 0.85rem;
  color: var(--color-primary-strong);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1,
.section-heading h2 {
  margin: 0;
  color: var(--color-text);
  letter-spacing: 0;
}

.hero h1 {
  max-width: 12.8ch;
  font-size: 5.75rem;
  line-height: 1;
}

.hero-lede {
  max-width: 42rem;
  margin: 1.5rem 0 0;
  color: var(--color-muted);
  font-size: 1.2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.8rem;
}

.button {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.72rem 1rem;
  font-weight: 700;
  text-decoration: none;
}

.button.primary {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: #ffffff;
}

.button.secondary {
  background: var(--color-surface);
  color: var(--color-text);
}

.product-visual {
  display: grid;
  grid-template-columns: 0.82fr minmax(2rem, 0.2fr) 1.1fr;
  align-items: center;
  min-height: 24rem;
}

.device-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-panel);
}

.device-card.phone {
  min-height: 18rem;
  padding: 1rem;
}

.device-card.server {
  min-height: 16rem;
  padding: 1rem;
}

.device-label {
  display: block;
  color: var(--color-muted);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

.device-line {
  display: block;
  width: 100%;
  height: 0.72rem;
  margin-top: 1.2rem;
  border-radius: 999px;
  background: var(--color-surface-muted);
}

.device-line.short {
  width: 68%;
}

.send-chip {
  display: inline-flex;
  margin-top: 5rem;
  border-radius: 999px;
  background: var(--color-primary-soft);
  color: var(--color-primary-strong);
  padding: 0.55rem 0.8rem;
  font-size: 0.86rem;
  font-weight: 800;
}

.bridge-line {
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-blue));
}

.terminal-line {
  display: block;
  margin-top: 0.85rem;
  border-radius: var(--radius-sm);
  background: var(--color-code-bg);
  color: var(--color-code-text);
  padding: 0.65rem 0.75rem;
  font: 0.82rem/1.4 var(--font-mono);
}

.terminal-line.success {
  color: #89f0b8;
}

.section {
  padding: clamp(2.5rem, 7vw, 5rem) 0;
}

.section-heading {
  max-width: 45rem;
  margin-bottom: 1.5rem;
}

.section-heading h2 {
  font-size: 3rem;
  line-height: 1;
}

.section-heading p:not(.eyebrow) {
  color: var(--color-muted);
  font-size: 1.05rem;
}

.steps-grid,
.status-grid,
.service-grid,
.technical-grid,
.evidence-list {
  display: grid;
  gap: 1rem;
}

.steps-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.status-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.service-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.technical-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.step-panel,
.service-panel,
.technical-panel,
.status-panel,
.evidence-list article {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  padding: 1.1rem;
}

.step-number {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border-radius: 999px;
  background: var(--color-primary-soft);
  color: var(--color-primary-strong);
  font-weight: 800;
}

.step-panel h3,
.service-panel h3,
.technical-panel h3,
.status-panel h3,
.evidence-list h3 {
  margin: 1rem 0 0;
  color: var(--color-text);
  font-size: 1.05rem;
}

.step-panel p,
.service-panel p,
.technical-panel p,
.status-panel p,
.evidence-list p {
  margin: 0.65rem 0 0;
  color: var(--color-muted);
}

.service-panel h3,
.technical-panel h3 {
  margin-top: 0;
}

.param-list {
  display: grid;
  gap: 0.8rem;
  margin: 1rem 0 0;
}

.param-list div {
  display: grid;
  grid-template-columns: minmax(9rem, 0.32fr) minmax(0, 1fr);
  gap: 0.85rem;
  align-items: start;
}

.param-list dt,
.param-list dd {
  margin: 0;
}

.param-list dd {
  color: var(--color-muted);
}

.doc-links {
  display: grid;
  gap: 0.65rem;
  margin: 1rem 0 0;
  padding-left: 1.1rem;
}

.note {
  font-size: 0.9rem;
}

.status-badge {
  display: inline-flex;
  border-radius: 999px;
  padding: 0.32rem 0.55rem;
  font-size: 0.74rem;
  font-weight: 800;
  text-transform: uppercase;
}

.status-badge.ready {
  background: var(--color-primary-soft);
  color: var(--color-primary-strong);
}

.status-badge.preview {
  background: var(--color-blue-soft);
  color: var(--color-blue);
}

.status-badge.soon {
  background: var(--color-warning-soft);
  color: var(--color-warning);
}

.artifact-table {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.artifact-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(13rem, 0.44fr);
  gap: 1rem;
  padding: 0.95rem 1rem;
  border-top: 1px solid var(--color-border);
}

.artifact-row:first-child {
  border-top: 0;
}

.artifact-row.header {
  background: var(--color-surface-muted);
  color: var(--color-muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.evidence-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.evidence-list code {
  color: var(--color-text);
  font-size: 0.92em;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  border-top: 1px solid var(--color-border);
  padding: 2rem 0 2.5rem;
  color: var(--color-muted);
}

.site-footer p {
  margin: 0.35rem 0 0;
}

.site-footer nav {
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 1rem;
}

@media (max-width: 900px) {
  .hero,
  .steps-grid,
  .service-grid,
  .technical-grid,
  .status-grid,
  .evidence-list {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero h1 {
    max-width: 13.5ch;
    font-size: 4.5rem;
  }

  .product-visual {
    grid-template-columns: 1fr;
    gap: 1rem;
    min-height: auto;
  }

  .bridge-line {
    width: 2px;
    height: 2.5rem;
    justify-self: center;
  }

  .status-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .site-header,
  .site-footer,
  .artifact-row {
    align-items: flex-start;
    grid-template-columns: 1fr;
  }

  .site-header,
  .site-footer {
    flex-direction: column;
  }

  .site-nav,
  .site-footer nav {
    justify-content: flex-start;
  }

  .hero h1 {
    font-size: 3.25rem;
  }

  .hero-lede {
    font-size: 1.08rem;
  }

  .section-heading h2 {
    font-size: 2.25rem;
  }

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

  .param-list div {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }
}