:root {
  --bg: #05070d;
  --bg-alt: #0a0e1a;
  --panel: #0d1220;
  --panel-border: #1c2438;
  --text: #eef1fb;
  --text-dim: #a6afc7;
  --text-faint: #6b7392;
  --blue: #3b82f6;
  --cyan: #22d3ee;
  --purple: #8b5cf6;
  --green: #34d399;
  --gradient: linear-gradient(90deg, var(--cyan), var(--blue), var(--purple));
  --radius: 16px;
  --max-width: 1160px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

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

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(5, 7, 13, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--panel-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  flex-shrink: 0;
}

.brand-mark {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gradient);
  box-shadow: 0 0 16px 2px rgba(59, 130, 246, 0.6);
  flex-shrink: 0;
}

.brand-dot { color: var(--text-faint); font-weight: 500; }

.main-nav {
  display: flex;
  gap: 28px;
  font-size: 0.92rem;
  color: var(--text-dim);
}

.main-nav a:hover { color: var(--text); }

.header-cta {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 22px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 600;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: transform 0.15s ease, opacity 0.15s ease, border-color 0.15s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--gradient);
  color: #05070d;
}

.btn-primary:hover { opacity: 0.92; }

.btn-secondary {
  background: transparent;
  border-color: var(--purple);
  color: var(--text);
}

.btn-secondary:hover { border-color: var(--cyan); }

.btn-ghost {
  background: var(--panel);
  border-color: var(--panel-border);
  color: var(--text-dim);
  padding: 9px 16px;
  font-size: 0.85rem;
}

.btn-ghost:hover { color: var(--text); border-color: var(--blue); }

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: 72px 0 96px;
}

.hero-glow {
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 700px;
  background:
    radial-gradient(circle at 30% 20%, rgba(34, 211, 238, 0.16), transparent 55%),
    radial-gradient(circle at 70% 10%, rgba(139, 92, 246, 0.16), transparent 55%),
    radial-gradient(circle at 50% 40%, rgba(59, 130, 246, 0.12), transparent 60%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-logo {
  width: min(560px, 90%);
  margin: 0 auto 8px;
}

.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.9rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  max-width: 780px;
  margin: 0 0 20px;
}

.hero-sub {
  color: var(--text-dim);
  font-size: 1.08rem;
  max-width: 640px;
  margin: 0 0 36px;
}

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

/* Sections */
.section {
  padding: 88px 0;
  border-top: 1px solid var(--panel-border);
}

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 14px;
}

.eyebrow-personal { color: var(--green); }
.eyebrow-business { color: var(--purple); }

.section h2 {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  letter-spacing: -0.01em;
  margin: 0 0 18px;
  max-width: 720px;
}

.section-lead {
  color: var(--text-dim);
  font-size: 1.05rem;
  max-width: 680px;
  margin: 0 0 40px;
}

/* Flow */
.flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 40px 0 56px;
}

.flow span:not(.flow-arrow) {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
}

.flow-arrow {
  color: var(--text-faint);
  font-size: 1.1rem;
}

/* Architecture grid */
.architecture {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.arch-layer {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 24px;
}

.arch-layer h3 {
  font-size: 1rem;
  margin: 0 0 10px;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.arch-layer p {
  font-size: 0.9rem;
  color: var(--text-dim);
  margin: 0;
}

/* App cards */
.apps { padding-top: 88px; }

.app-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
  padding: 44px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 24px;
  margin-bottom: 32px;
}

.app-card h2 { margin-bottom: 16px; }

.app-card p {
  color: var(--text-dim);
  max-width: 640px;
  margin: 0 0 24px;
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.feature-list li {
  position: relative;
  padding-left: 24px;
  font-size: 0.95rem;
  color: var(--text);
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gradient);
}

/* Principle steps */
.steps {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.step {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 999px;
  padding: 12px 22px 12px 12px;
  font-weight: 600;
  font-size: 0.92rem;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--gradient);
  color: #05070d;
  font-size: 0.8rem;
  font-weight: 800;
}

/* Final CTA */
.cta-final {
  text-align: center;
}

.cta-final .wrap { display: flex; flex-direction: column; align-items: center; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--panel-border);
  padding: 48px 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
  color: var(--text-faint);
}

.footer-tagline {
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  margin: 0;
}

.footer-copy {
  font-size: 0.8rem;
  margin: 0;
}

/* Responsive */
@media (min-width: 860px) {
  .app-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .main-nav { display: none; }
  .architecture { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .header-cta .btn-ghost:first-child { display: none; }
  .architecture { grid-template-columns: 1fr; }
  .app-card { padding: 28px; }
  .hero { padding: 48px 0 64px; }
  .section { padding: 56px 0; }
}