:root {
  --bg: #07111b;
  --bg-soft: #0d1a29;
  --panel: rgba(11, 23, 37, 0.92);
  --panel-strong: rgba(16, 31, 48, 0.97);
  --line: rgba(143, 193, 255, 0.18);
  --text: #eef5ff;
  --muted: #9cb5d2;
  --accent: #56f1c6;
  --accent-2: #ff6d5f;
  --accent-3: #ffd166;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.42);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  background:
    radial-gradient(circle at 20% 18%, rgba(255, 109, 95, 0.16), transparent 28%),
    radial-gradient(circle at 82% 14%, rgba(86, 241, 198, 0.12), transparent 30%),
    radial-gradient(circle at 50% 120%, rgba(52, 96, 201, 0.28), transparent 35%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 10% 20%, rgba(255, 255, 255, 0.8) 0 1px, transparent 2px),
    radial-gradient(circle at 30% 80%, rgba(255, 109, 95, 0.6) 0 1px, transparent 2px),
    radial-gradient(circle at 70% 30%, rgba(86, 241, 198, 0.55) 0 1.2px, transparent 2px),
    radial-gradient(circle at 85% 75%, rgba(255, 255, 255, 0.7) 0 1px, transparent 2px);
  background-size: 320px 320px, 380px 380px, 420px 420px, 500px 500px;
  opacity: 0.28;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 1rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--accent);
  color: #041318;
}

.skip-link:focus {
  left: 1rem;
}

.page-shell {
  position: relative;
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.25rem 0 5rem;
}

.ambient {
  position: absolute;
  inset: auto;
  width: 18rem;
  height: 18rem;
  border-radius: 999px;
  filter: blur(60px);
  opacity: 0.22;
  pointer-events: none;
}

.ambient-left {
  top: 8rem;
  left: -6rem;
  background: rgba(255, 109, 95, 0.48);
}

.ambient-right {
  top: 18rem;
  right: -8rem;
  background: rgba(86, 241, 198, 0.32);
}

.site-header,
.hero,
.section,
.site-footer {
  position: relative;
  z-index: 1;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 0 1.5rem;
}

.brand {
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

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

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(22rem, 0.9fr);
  gap: 2rem;
  align-items: center;
  padding: 3rem 0 2rem;
}

.eyebrow,
.section-kicker {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

h1,
h2,
h3 {
  line-height: 0.96;
  margin: 0;
}

h1 {
  margin-top: 0.75rem;
  font-size: clamp(3rem, 8vw, 5.6rem);
  max-width: 12ch;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.4rem);
  max-width: 15ch;
}

h3 {
  font-size: 1.2rem;
}

.lede,
.section p,
.faq-item p,
.narrative-card p,
.feature-card p,
.quickstart-footnote {
  color: var(--muted);
  line-height: 1.7;
  font-size: 1.04rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.75rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0 1.2rem;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
}

.button-primary {
  background: linear-gradient(135deg, var(--accent), #2fd8ff);
  color: #03141a;
}

.button-secondary {
  border: 1px solid var(--line);
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
}

.signal-list {
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.8rem;
}

.signal-list li {
  padding-left: 1.5rem;
  position: relative;
  color: var(--muted);
}

.signal-list li::before {
  content: ">";
  position: absolute;
  left: 0;
  color: var(--accent-2);
  font-family: "IBM Plex Mono", monospace;
}

.hero-card,
.quickstart-panel,
.feature-card,
.narrative-card {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-card {
  border-radius: 1.5rem;
  overflow: hidden;
}

.terminal-chrome {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.2);
}

.dot {
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 50%;
}

.dot-red { background: #ff6d5f; }
.dot-yellow { background: #ffd166; }
.dot-green { background: #56f1c6; }

.terminal-label {
  margin-left: auto;
  font-family: "IBM Plex Mono", monospace;
  color: var(--muted);
  font-size: 0.88rem;
}

.terminal-body,
.command-line code,
code,
pre {
  font-family: "IBM Plex Mono", monospace;
}

.terminal-body {
  margin: 0;
  padding: 1.4rem 1.25rem 1.5rem;
  font-size: 0.94rem;
  line-height: 1.7;
  color: #d7f9ff;
  background: linear-gradient(180deg, rgba(13, 26, 41, 0.85), rgba(9, 19, 31, 0.96));
  overflow-x: auto;
}

.section {
  padding: 4rem 0 0;
}

.section-heading {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.section-heading.compact {
  margin-bottom: 1rem;
}

.section-mark {
  color: var(--accent-2);
  font-family: "IBM Plex Mono", monospace;
  font-size: 2rem;
  line-height: 1;
  padding-top: 0.25rem;
}

.quickstart-panel {
  border-radius: 1.6rem;
  overflow: hidden;
}

.quickstart-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1rem 0;
}

.tab-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.tab-button,
.toolbar-badge,
.copy-button {
  border-radius: 0.9rem;
  font-family: "IBM Plex Mono", monospace;
}

.tab-button {
  border: 1px solid transparent;
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  padding: 0.75rem 1rem;
  cursor: pointer;
}

.tab-button.is-active {
  color: #04141b;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(86, 241, 198, 0.24);
}

.toolbar-badge {
  margin: 0;
  padding: 0.7rem 0.95rem;
  border: 1px solid var(--line);
  color: var(--accent-3);
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}

.quickstart-panels {
  padding: 1rem;
}

.command-panel {
  display: none;
  background: var(--panel-strong);
  border-radius: 1.25rem;
  border: 1px solid rgba(143, 193, 255, 0.12);
  padding: 1.3rem;
}

.command-panel.is-active {
  display: block;
}

.panel-note {
  margin-top: 0;
  font-style: italic;
}

.command-line {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  padding: 1.1rem 1.2rem;
  border-radius: 1rem;
  background: rgba(0, 0, 0, 0.22);
  color: var(--text);
}

.command-line code {
  font-size: clamp(0.92rem, 1.8vw, 1.2rem);
  overflow-wrap: anywhere;
}

.copy-button {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  min-height: 2.8rem;
  padding: 0 1rem;
  cursor: pointer;
}

.quickstart-footnote {
  margin: 0;
  padding: 0 1rem 1.3rem;
}

.split-grid,
.narrative-grid {
  display: grid;
  gap: 1.4rem;
}

.split-grid {
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  align-items: start;
}

.feature-stack {
  display: grid;
  gap: 1rem;
}

.feature-card,
.narrative-card {
  border-radius: 1.3rem;
  padding: 1.2rem 1.2rem 1.4rem;
}

.artifact-table {
  display: grid;
  gap: 0.9rem;
}

.artifact-row {
  display: grid;
  grid-template-columns: minmax(12rem, 0.75fr) minmax(0, 1.25fr);
  gap: 1rem;
  padding: 1rem 1.1rem;
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(143, 193, 255, 0.1);
}

.artifact-description {
  color: var(--muted);
  line-height: 1.6;
}

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

.faq-list {
  display: grid;
  gap: 1rem;
}

.faq-item {
  border-radius: 1rem;
  border: 1px solid rgba(143, 193, 255, 0.12);
  background: rgba(255, 255, 255, 0.03);
  padding: 1rem 1.1rem;
}

.faq-item summary {
  cursor: pointer;
  font-weight: 700;
}

.faq-item p {
  margin-bottom: 0;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 4rem;
  padding: 2rem 0 0;
  border-top: 1px solid rgba(143, 193, 255, 0.12);
}

.site-footer p {
  margin: 0;
  color: var(--muted);
}

.footer-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

@media (max-width: 900px) {
  .hero,
  .split-grid,
  .narrative-grid,
  .artifact-row {
    grid-template-columns: 1fr;
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100% - 1rem, 100%);
  }

  .hero {
    padding-top: 2rem;
  }

  .command-line {
    align-items: stretch;
  }

  .copy-button {
    width: 100%;
  }
}