:root {
  --bg: hsl(230, 18%, 11%);
  --bg-elevated: hsl(230, 18%, 16%);
  --bg-soft: hsl(230, 18%, 20%);
  --bg-alt: hsl(230, 20%, 13%);
  --text: hsl(230, 32%, 92%);
  --text-muted: hsl(230, 20%, 70%);
  --text-softer: hsl(230, 15%, 55%);
  --accent: hsl(230, 70%, 60%);
  --accent-soft: hsl(230, 70%, 65%);
  --accent-strong: hsl(230, 80%, 55%);
  --shadow: 0 20px 60px rgba(8, 12, 24, 0.45);
  --radius-large: 32px;
  --radius: 18px;
  --radius-small: 12px;
  --container-width: min(1100px, 92vw);
  --transition: all 0.25s ease;
  font-family: 'Inter', 'Roboto', 'Segoe UI', system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: inherit;
  background: radial-gradient(circle at top right, rgba(70, 90, 200, 0.2), transparent 45%),
              radial-gradient(circle at 15% 20%, rgba(40, 180, 255, 0.15), transparent 50%),
              var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container {
  width: var(--container-width);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(10, 14, 26, 0.75);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.brand-logo {
  width: 36px;
  height: 36px;
}

.brand-name {
  font-size: 1.1rem;
}

.main-nav {
  position: relative;
}

.nav-links {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 28px;
  font-size: 0.95rem;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

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

.nav-links a.active {
  color: #fff;
  position: relative;
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -8px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
  border-radius: 999px;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.03);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.nav-toggle-line,
.nav-toggle-line::before,
.nav-toggle-line::after {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 999px;
  position: relative;
  transition: var(--transition);
}

.nav-toggle-line::before {
  position: absolute;
  top: -6px;
}

.nav-toggle-line::after {
  position: absolute;
  top: 6px;
}

.main-nav[data-open="true"] .nav-toggle-line {
  background: transparent;
}

.main-nav[data-open="true"] .nav-toggle-line::before {
  transform: translateY(6px) rotate(45deg);
}

.main-nav[data-open="true"] .nav-toggle-line::after {
  transform: translateY(-6px) rotate(-45deg);
}

.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 26px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
  color: #fff;
  font-weight: 600;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cta-button:hover,
.cta-button:focus {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(64, 99, 255, 0.35);
}

.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 26px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text);
  font-weight: 600;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.secondary-button:hover,
.secondary-button:focus {
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
}

.hero {
  padding: 120px 0 100px;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 60px;
  align-items: center;
}

.hero-copy h1 {
  font-size: clamp(2.4rem, 5vw, 3.4rem);
  line-height: 1.15;
  margin-bottom: 20px;
}

.hero-subtext {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.beta-note {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 26px;
  color: var(--text-muted);
}

.beta-badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(86, 104, 240, 0.22);
  color: var(--accent-soft);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.hero-media {
  display: flex;
  justify-content: flex-end;
}

.hero-card {
  background: linear-gradient(145deg, rgba(32, 40, 75, 0.85), rgba(18, 20, 45, 0.92));
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-large);
  padding: 32px;
  box-shadow: var(--shadow);
  min-height: 320px;
}

.hero-card-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 24px;
  color: var(--text);
}

.hero-timeline {
  position: relative;
  height: 140px;
  margin-bottom: 24px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.05);
  overflow: hidden;
}

.timeline-track {
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-50%);
}

.timeline-cursor {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.85));
  animation: cursor-scan 4.5s linear infinite;
}

.timeline-keyframe {
  position: absolute;
  top: 15%;
  bottom: 15%;
  width: 8px;
  border-radius: 4px;
  background: var(--accent);
  left: var(--pos);
  box-shadow: 0 0 18px rgba(88, 110, 255, 0.6);
}

.hero-highlights {
  list-style: none;
  display: grid;
  gap: 10px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.section {
  padding: 110px 0;
}

.section.alt {
  background: var(--bg-alt);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 50px;
}

.section-heading h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  line-height: 1.2;
}

.section-intro {
  margin-top: 18px;
  color: var(--text-muted);
  font-size: 1.05rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  color: var(--accent-soft);
  margin-bottom: 18px;
  font-weight: 700;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 26px;
}

.feature-card {
  background: rgba(20, 24, 44, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  padding: 32px;
  min-height: 260px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: rgba(94, 118, 255, 0.5);
}

.feature-card h3 {
  font-size: 1.25rem;
}

.feature-card ul {
  list-style: inside disc;
  color: var(--text-softer);
  margin-left: 6px;
  display: grid;
  gap: 6px;
  font-size: 0.95rem;
}

.node-section {
  position: relative;
}

.node-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 60px;
  align-items: center;
}

.node-content .section-intro {
  margin-top: 0;
}

.node-inspiration {
  margin-top: 18px;
  color: var(--text-muted);
  font-size: 1.05rem;
}

.node-callouts {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.node-callouts li {
  background: rgba(20, 24, 44, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 20px 24px;
  color: var(--text-softer);
  line-height: 1.55;
}

.node-callouts strong {
  color: var(--text);
  font-weight: 600;
}

.node-visual {
  background: linear-gradient(160deg, rgba(42, 52, 112, 0.5), rgba(18, 22, 52, 0.95));
  border-radius: var(--radius-large);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.node-visual-header {
  padding: 18px 26px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.node-visual-body {
  display: grid;
  grid-template-columns: auto auto;
  align-items: center;
  padding: 32px;
  gap: 12px 10px;
}

.node-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(12, 16, 32, 0.55);
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.85rem;
}

.node-pill.accent {
  background: rgba(94, 118, 255, 0.32);
  border-color: rgba(94, 118, 255, 0.6);
  color: #fff;
}

.node-connector {
  font-size: 1.4rem;
  color: rgba(255, 255, 255, 0.55);
  padding: 0 6px;
}

.node-note {
  grid-column: 1 / -1;
  text-align: center;
  margin-top: 10px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 60px;
  align-items: center;
}

.workflow-steps {
  counter-reset: step;
  list-style: none;
  display: grid;
  gap: 26px;
}

.workflow-steps li {
  background: rgba(17, 19, 40, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  padding: 26px;
  position: relative;
  padding-left: 70px;
  min-height: 140px;
}

.workflow-steps li::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 24px;
  top: 28px;
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  color: rgba(142, 156, 255, 0.7);
}

.workflow-steps h3 {
  font-size: 1.1rem;
  margin-bottom: 6px;
}

.integrations-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 26px;
}

.integrations-grid article {
  background: rgba(24, 26, 50, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: var(--radius);
  padding: 30px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  color: var(--text-muted);
}

.integrations-grid h3 {
  color: var(--text);
  font-size: 1.1rem;
}

.pricing-card {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 60px;
  align-items: center;
}

.pricing-actions {
  background: linear-gradient(150deg, rgba(82, 104, 255, 0.45), rgba(42, 48, 96, 0.9));
  border-radius: var(--radius-large);
  padding: 40px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow);
  display: grid;
  gap: 20px;
}

.price-display {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.price {
  font-size: clamp(2.8rem, 6vw, 3.8rem);
  font-weight: 700;
}

.price-period {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.75);
}

.price-note {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.95rem;
}

.muted {
  color: var(--text-muted);
  font-weight: 500;
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
}

.testimonial-grid figure {
  background: rgba(24, 28, 52, 0.9);
  border-radius: var(--radius);
  padding: 30px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  display: grid;
  gap: 16px;
}

.testimonial-grid blockquote {
  font-size: 1.05rem;
  color: var(--text);
  line-height: 1.5;
}

.testimonial-grid figcaption {
  color: var(--text-softer);
  font-size: 0.9rem;
}

.faq-list {
  display: grid;
  gap: 16px;
}

.faq-list details {
  background: rgba(17, 19, 40, 0.9);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 22px 26px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: '+';
  float: right;
  transition: transform 0.2s ease;
  font-weight: 400;
  color: var(--text-muted);
}

.faq-list details[open] summary::after {
  transform: rotate(45deg);
}

.faq-list p {
  margin-top: 14px;
  color: var(--text-softer);
  font-size: 0.95rem;
}

.site-footer {
  background: rgba(9, 10, 26, 0.95);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 40px 0 60px;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 30px;
  align-items: start;
}

.footer-brand p {
  color: var(--text-softer);
  margin-top: 12px;
}

.footer-links {
  display: grid;
  gap: 12px;
  justify-items: flex-start;
  color: var(--text-muted);
}

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

.footer-note {
  color: var(--text-softer);
  text-align: right;
  font-size: 0.85rem;
}

@keyframes cursor-scan {
  0% { transform: translateX(-4%); }
  50% { transform: translateX(104%); }
  100% { transform: translateX(-4%); }
}

@media (max-width: 1024px) {
  .hero-grid,
  .workflow-grid,
  .pricing-card,
  .node-grid {
    grid-template-columns: 1fr;
  }

  .hero-media {
    justify-content: center;
  }

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

  .node-visual {
    max-width: 520px;
    margin: 0 auto;
  }

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-note {
    text-align: center;
  }

  .header-content {
    flex-wrap: wrap;
    gap: 16px;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    top: 60px;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    background: rgba(9, 11, 24, 0.96);
    padding: 24px;
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: var(--transition);
    min-width: 200px;
  }

  .main-nav[data-open="true"] .nav-links {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .hero {
    padding: 100px 0 80px;
  }

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

  .section {
    padding: 80px 0;
  }

  .beta-note {
    flex-direction: column;
    align-items: flex-start;
  }

  .node-visual-body {
    grid-template-columns: 1fr;
    justify-items: center;
  }

  .node-connector {
    display: none;
  }

  .node-pill {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 520px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .pricing-actions {
    padding: 32px 24px;
  }

  .feature-card,
  .integrations-grid article,
  .workflow-steps li,
  .testimonial-grid figure,
  .faq-list details {
    padding: 24px;
  }
}