:root {
  --bg: #09090b;
  --fg: #f4f4f5;
  --fg-muted: #a1a1aa;
  --fg-dim: #52525b;
  --accent: #22d3ee;
  --accent-glow: rgba(34, 211, 238, 0.15);
  --surface: #18181b;
  --border: #27272a;
  --font-display: 'Syne', sans-serif;
  --font-body: 'Manrope', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 40px;
  border-bottom: 1px solid var(--border);
  background: rgba(9, 9, 11, 0.8);
  backdrop-filter: blur(12px);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--fg);
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 120px 40px 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 40%, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 32px;
  position: relative;
  z-index: 1;
}

.eyebrow-dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(48px, 10vw, 96px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
}

.hero-sub {
  font-size: clamp(16px, 2.5vw, 20px);
  color: var(--fg-muted);
  max-width: 600px;
  line-height: 1.7;
  margin-bottom: 60px;
  position: relative;
  z-index: 1;
}

.hero-visual {
  position: relative;
  width: 200px;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.pulse-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--accent);
  opacity: 0;
  animation: pulse-expand 3s ease-out infinite;
}

.ring-1 { width: 120px; height: 120px; animation-delay: 0s; }
.ring-2 { width: 160px; height: 160px; animation-delay: 0.5s; }
.ring-3 { width: 200px; height: 200px; animation-delay: 1s; }

@keyframes pulse-expand {
  0% { opacity: 0.8; transform: scale(0.8); }
  100% { opacity: 0; transform: scale(1.3); }
}

.pulse-core {
  width: 80px;
  height: 80px;
  background: var(--surface);
  border: 2px solid var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  position: relative;
  z-index: 2;
}

/* Manifesto */
.manifesto {
  padding: 100px 40px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.manifesto-inner {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 60px;
  align-items: start;
}

.manifesto-label {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  padding-top: 8px;
}

.manifesto-content p {
  font-size: clamp(17px, 2vw, 22px);
  line-height: 1.75;
  color: var(--fg-muted);
  margin-bottom: 28px;
}

.manifesto-content em { color: var(--fg); font-style: normal; }

.manifesto-conclusion {
  font-size: clamp(18px, 2.2vw, 24px);
  color: var(--fg) !important;
  font-weight: 500;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.manifesto-conclusion strong { color: var(--accent); }

/* Features */
.features {
  padding: 120px 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.features-header {
  margin-bottom: 80px;
}

.section-label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 16px;
}

.features-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  color: var(--fg);
  max-width: 600px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.feature-card {
  padding: 36px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: border-color 0.2s ease;
}

.feature-card:hover {
  border-color: var(--fg-dim);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 24px;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 15px;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* Closing */
.closing {
  padding: 120px 40px;
  text-align: center;
  background: linear-gradient(180deg, var(--bg) 0%, var(--surface) 100%);
}

.closing-inner {
  max-width: 800px;
  margin: 0 auto;
}

.closing-title {
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 40px);
  font-weight: 600;
  line-height: 1.4;
  color: var(--fg);
  margin-bottom: 24px;
}

.closing-sub {
  font-size: 18px;
  color: var(--fg-muted);
}

/* Footer */
.footer {
  padding: 40px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--fg-muted);
}

.footer-meta {
  font-size: 13px;
  color: var(--fg-dim);
}

/* Responsive */
@media (max-width: 768px) {
  .nav { padding: 0 20px; }
  .hero { padding: 100px 20px 60px; }
  .manifesto { padding: 60px 20px; }
  .manifesto-inner { grid-template-columns: 1fr; gap: 24px; }
  .features { padding: 80px 20px; }
  .closing { padding: 80px 20px; }
  .footer { padding: 32px 20px; }
  .footer-inner { flex-direction: column; gap: 16px; text-align: center; }
  .features-grid { grid-template-columns: 1fr; }
}