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

:root {
  --bg-primary:    #09090b;
  --bg-secondary:  #18181b;
  --bg-card:       #18181b;
  --border:        #3f3f46;
  --border-subtle: #27272a;
  --text-primary:  #fafafa;
  --text-secondary:#a1a1aa;
  --text-muted:    #71717a;

  /* Brand — violet */
  --brand-300: #c4b5fd;
  --brand-400: #a78bfa;
  --brand-500: #8b5cf6;
  --brand-600: #7c3aed;
  --brand-700: #6d28d9;

  /* Pink accent */
  --pink-400: #f472b6;
  --pink-500: #ec4899;
  --pink-600: #db2777;

  /* Gradient */
  --gradient-brand: linear-gradient(135deg, var(--brand-500), var(--pink-500));
  --gradient-brand-r: linear-gradient(to right, var(--brand-500), var(--pink-500));

  --font-sans: 'Space Grotesk', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Space Mono', Consolas, monospace;
  --radius-xl: 16px;
  --max-w: 1152px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}


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

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}
@media (min-width: 640px)  { .container { padding: 0 32px; } }
@media (min-width: 1024px) { .container { padding: 0 48px; } }

/* ── Nav ────────────────────────────────────────── */
nav {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 50%, transparent);
  background: color-mix(in srgb, var(--bg-primary) 85%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: inline-flex;
  align-items: center;
  font-weight: 700;
  font-size: 1.125rem;
}
.brand-logo { color: var(--brand-400); margin-right: -2px; }
.nav-links  { display: flex; align-items: center; gap: 16px; }
.btn-ghost  { color: var(--text-secondary); font-size: 0.9375rem; transition: color 0.15s; }
.btn-ghost:hover { color: var(--text-primary); }
.btn-primary {
  background: var(--gradient-brand-r); color: #fff;
  padding: 8px 20px; border-radius: 8px;
  font-size: 0.9375rem; font-weight: 500;
  transition: opacity 0.15s;
}
.btn-primary:hover { opacity: 0.9; }

/* ── Hero ───────────────────────────────────────── */
.hero {
  padding: 96px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* Canvas sits at the very back */
#network-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* Radial vignette so canvas fades at edges */
.hero-vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 70% at 50% 50%, transparent 25%, var(--bg-primary) 100%);
  pointer-events: none;
}

.hero > .container { position: relative; z-index: 1; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 14px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--brand-500) 30%, transparent);
  background: color-mix(in srgb, var(--brand-500) 10%, transparent);
  color: var(--brand-400);
  font-size: 0.875rem;
  margin-bottom: 24px;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}
h1 .accent {
  background: var(--gradient-brand-r);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  color: var(--text-secondary);
  font-size: 1.125rem;
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.75;
}

.hero-ctas {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-hero-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--gradient-brand-r); color: #fff;
  padding: 12px 32px; border-radius: 8px;
  font-weight: 500; font-size: 1rem;
  transition: opacity 0.15s;
}
.btn-hero-primary:hover { opacity: 0.88; }

.btn-hero-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--border); color: var(--text-secondary);
  padding: 12px 32px; border-radius: 8px;
  font-weight: 500; font-size: 1rem;
  transition: border-color 0.15s, color 0.15s;
}
.btn-hero-secondary:hover { border-color: var(--brand-500); color: var(--text-primary); }

/* ── Providers strip ────────────────────────────── */
.providers { margin-top: 64px; display: flex; flex-direction: column; gap: 16px; align-items: center; }
.provider-logos {
  display: flex; align-items: center; justify-content: center;
  gap: 40px; flex-wrap: wrap;
}
.provider-item {
  display: flex; align-items: center; gap: 8px;
  color: var(--text-muted); font-size: 0.875rem; font-weight: 500;
  transition: color 0.15s;
}
.provider-item:hover { color: var(--text-secondary); }
.provider-item svg { width: 24px; height: 24px; }
.providers-note { color: var(--text-muted); font-size: 0.8125rem; }

/* ── Scroll Showcase (Apple-style product tour) ──── */
.scroll-showcase {
  position: relative;
  height: 300vh;
}

.scroll-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 0 24px;
}
@media (min-width: 640px)  { .scroll-sticky { padding: 0 32px; } }
@media (min-width: 1024px) { .scroll-sticky { padding: 0 48px; } }

.scroll-inner {
  display: flex;
  align-items: center;
  gap: 40px;
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
}

/* Labels */
.scroll-labels {
  flex: 0 0 220px;
  display: flex;
  flex-direction: column;
}

.scroll-label {
  padding: 20px 0 20px 20px;
  border-left: 2px solid var(--border-subtle);
  opacity: 0.35;
  transition: opacity 0.4s ease, border-color 0.4s ease;
  cursor: default;
}

.scroll-label.active {
  opacity: 1;
  border-left-color: var(--brand-500);
}

.label-num {
  display: block;
  font-size: 0.6875rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--brand-400);
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}

.scroll-label strong {
  display: block;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.scroll-label p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Browser frame */
.scroll-frame {
  flex: 1;
  min-width: 0;
  border-radius: 12px;
  border: 1px solid var(--border-subtle);
  overflow: hidden;
  box-shadow:
    0 48px 120px -24px rgba(0,0,0,0.9),
    0 0 0 1px rgba(255,255,255,0.04);
  background: #111113;
}

.scroll-chrome {
  background: #111113;
  border-bottom: 1px solid var(--border-subtle);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.chrome-dots { display: flex; gap: 6px; }
.chrome-dot  { width: 12px; height: 12px; border-radius: 50%; }

.scroll-url-bar {
  flex: 1;
  max-width: 260px;
  margin: 0 auto;
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 3px 12px;
  font-size: 0.6875rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  text-align: center;
}

.scroll-screen {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--bg-secondary);
  overflow: hidden;
}

.scroll-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top left;
  opacity: 0;
  transition: opacity 0.55s ease;
}

.scroll-slide.active { opacity: 1; }

/* Mobile: degrade to static stacked layout */
@media (max-width: 860px) {
  .scroll-showcase { height: auto; }
  .scroll-sticky    { position: relative; height: auto; padding: 64px 0; }
  .scroll-inner     { flex-direction: column; gap: 32px; }
  .scroll-labels    { flex: none; width: 100%; flex-direction: row; overflow-x: auto; gap: 0; }
  .scroll-label     { flex: 0 0 200px; border-left: none; border-top: 2px solid var(--border-subtle); padding: 16px 0 0; }
  .scroll-label.active { border-top-color: var(--brand-500); }
  .scroll-frame     { width: 100%; }
}
.mock-edge {
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--brand-500) 25%, transparent), transparent);
  transform-origin: left center;
}

/* ── Section shared ─────────────────────────────── */
.section-bg { background: var(--bg-secondary); }
.section-header { text-align: center; margin-bottom: 64px; }
.section-header h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700; letter-spacing: -0.015em; margin-bottom: 16px;
}
.section-header p { color: var(--text-secondary); max-width: 560px; margin: 0 auto; }

/* ── Capabilities ───────────────────────────────── */
.capabilities { padding: 96px 0; }
.features-grid { display: grid; gap: 20px; grid-template-columns: 1fr; }
@media (min-width: 768px)  { .features-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .features-grid { grid-template-columns: repeat(3, 1fr); } }

.feature-card {
  background: var(--bg-card);
  border: 1px solid color-mix(in srgb, var(--border) 60%, transparent);
  border-radius: var(--radius-xl);
  padding: 24px;
  transition: border-color 0.2s;
}
.feature-card:hover { border-color: color-mix(in srgb, var(--brand-500) 40%, transparent); }
.feature-icon {
  background: var(--gradient-brand-r);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
  width: 24px; height: 24px;
  /* fallback for browsers that don't support bg-clip on SVG */
  color: var(--brand-400);
}
.feature-card h3 { font-size: 0.9375rem; font-weight: 600; margin-bottom: 8px; }
.feature-card p  { color: var(--text-secondary); font-size: 0.875rem; line-height: 1.65; }

/* ── How It Works ───────────────────────────────── */
.how-it-works { padding: 96px 0; }
.steps-grid { display: grid; gap: 48px; grid-template-columns: 1fr; list-style: none; }
@media (min-width: 768px) { .steps-grid { grid-template-columns: repeat(3, 1fr); position: relative; } }
.step { text-align: center; list-style: none; }
.step-number {
  width: 48px; height: 48px;
  background: var(--gradient-brand-r);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 1.25rem; margin: 0 auto 16px;
}
.step h3 { font-size: 1.125rem; font-weight: 600; margin-bottom: 8px; }
.step p  { color: var(--text-secondary); font-size: 0.875rem; line-height: 1.65; }
@media (min-width: 768px) {
  .step { position: relative; }
  .step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 24px;
    left: calc(50% + 24px);
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, var(--brand-600), var(--border));
    opacity: 0.6;
    z-index: 0;
  }
  .step-number { position: relative; z-index: 1; }
}


/* ── Footer ─────────────────────────────────────── */
footer { border-top: 1px solid color-mix(in srgb, var(--border) 50%, transparent); padding: 32px 0; }
.footer-inner {
  display: flex; justify-content: space-between;
  align-items: center; flex-wrap: wrap; gap: 12px;
}
.footer-copy { color: var(--text-muted); font-size: 0.875rem; }

svg.icon { display: inline-block; vertical-align: middle; width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
svg.icon-sm { width: 16px; height: 16px; }

/* ── Contact form ────────────────────────────────── */
.contact-section {
  padding: 96px 0;
  background: var(--bg-primary);
}
.contact-page {
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
}
.contact-inner {
  max-width: 640px;
  margin: 0 auto;
}
.contact-header {
  text-align: center;
  margin-bottom: 48px;
}
.contact-header h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  margin-bottom: 12px;
}
.contact-header p {
  color: var(--text-secondary);
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }
.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-field label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}
.form-optional {
  color: var(--text-muted);
  font-weight: 400;
}
.form-field input,
.form-field textarea {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 10px 14px;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--text-primary);
  transition: border-color 0.15s;
  outline: none;
  resize: vertical;
}
.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--text-muted);
}
.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--brand-500);
  box-shadow: 0 0 0 3px rgba(139,92,246,0.12);
}
.btn-form-submit {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient-brand-r);
  color: #fff;
  padding: 12px 32px;
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: opacity 0.15s;
  align-self: flex-start;
}
.btn-form-submit:hover { opacity: 0.88; }
.form-success {
  font-size: 0.9375rem;
  color: var(--brand-400);
  min-height: 1.5em;
}

/* ── Nebula glow ─────────────────────────────────── */
.nebula-glow {
  position: fixed;
  width: 900px;
  height: 900px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  top: 40vh;
  left: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(139,92,246,0.10) 0%, rgba(236,72,153,0.05) 45%, transparent 70%);
  will-change: top, left;
  transition: top 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              left 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ── Digital Twin ────────────────────────────────── */
.digital-twin {
  padding: 96px 0;
  background: var(--bg-secondary);
}
.twin-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
@media (max-width: 900px) { .twin-inner { grid-template-columns: 1fr; gap: 48px; } }

.twin-text .badge { margin-bottom: 24px; }
.twin-text h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  margin-bottom: 16px;
  line-height: 1.25;
}
.twin-text > p {
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 32px;
}
.twin-points { display: flex; flex-direction: column; gap: 14px; list-style: none; }
.twin-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9375rem;
  color: var(--text-secondary);
}
.twin-check {
  width: 16px; height: 16px; flex-shrink: 0;
  stroke: var(--brand-400); fill: none;
  stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round;
}

.twin-visual { display: flex; flex-direction: column; gap: 12px; }
.twin-graph {
  display: flex; align-items: center; gap: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 24px;
}
.twin-layer { flex: 1; }
.twin-layer-label {
  font-size: 0.6875rem; font-weight: 500; color: var(--text-muted);
  margin-bottom: 12px; text-transform: uppercase; letter-spacing: 0.06em;
}
.twin-nodes { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.twin-node {
  padding: 6px 10px; border-radius: 6px;
  border: 1px solid var(--border-subtle); background: var(--bg-secondary);
  font-size: 0.75rem; font-weight: 500; color: var(--text-secondary); text-align: center;
}
.twin-arrow {
  display: flex; flex-direction: column; align-items: center;
  gap: 4px; flex-shrink: 0; color: var(--brand-500);
}
.twin-arrow svg { width: 36px; height: 20px; }
.twin-arrow span { font-size: 0.625rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; }

.twin-query {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg-card); border: 1px solid var(--border-subtle);
  border-radius: 8px; padding: 12px 16px;
  font-family: var(--font-mono); font-size: 0.8125rem;
}
.twin-query-prompt { color: var(--brand-400); }
.twin-query-text { color: var(--text-secondary); }

.twin-answer {
  display: flex; align-items: flex-start; gap: 8px;
  background: color-mix(in srgb, #ef4444 8%, transparent);
  border: 1px solid color-mix(in srgb, #ef4444 20%, transparent);
  border-radius: 8px; padding: 12px 16px;
  font-size: 0.8125rem; color: var(--text-secondary);
  font-family: var(--font-mono); line-height: 1.5;
}
.twin-answer svg { flex-shrink: 0; margin-top: 1px; }

/* ── Reveal on scroll ────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}