/* Base */
:root {
  --bg: #09090f;
  --surface: #13131e;
  --surface-2: #1a1a2a;
  --accent: #ff4d1c;
  --accent-dim: rgba(255, 77, 28, 0.12);
  --text: #f0f0f5;
  --text-muted: #7a7a90;
  --border: rgba(255,255,255,0.07);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Outfit', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4 { font-family: 'Archivo Black', sans-serif; line-height: 1.1; }

/* Nav */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 48px;
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: 'Archivo Black', sans-serif;
  font-size: 20px;
  letter-spacing: -0.02em;
  color: var(--text);
}

.nav-logo .os { color: var(--accent); }

.nav-badge {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 5px 12px;
  border-radius: 100px;
}

/* Hero */
.hero {
  min-height: calc(100vh - 72px);
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  padding: 80px 48px;
  gap: 40px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -100px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255,77,28,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content { max-width: 600px; }

.hero-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}

.hero-headline {
  font-size: clamp(40px, 5vw, 72px);
  color: var(--text);
  margin-bottom: 24px;
  line-height: 1.05;
}

.hero-headline .highlight {
  color: var(--accent);
  display: inline-block;
}

.hero-sub {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 480px;
  margin-bottom: 40px;
  line-height: 1.7;
}

.cta-note {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 500;
}

/* Pulse visual */
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  height: 420px;
}

.pulse-ring {
  position: absolute;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 1px solid var(--accent);
  opacity: 0;
  animation: pulse-expand 3s ease-out infinite;
}

.pulse-ring.delay-1 { animation-delay: 1s; }
.pulse-ring.delay-2 { animation-delay: 2s; }

@keyframes pulse-expand {
  0% { transform: scale(0.5); opacity: 0.6; }
  100% { transform: scale(1.6); opacity: 0; }
}

.pulse-center {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 60px rgba(255, 77, 28, 0.4);
  animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
  from { box-shadow: 0 0 40px rgba(255, 77, 28, 0.4); }
  to { box-shadow: 0 0 80px rgba(255, 77, 28, 0.7); }
}

.pulse-core {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: white;
}

/* Stats */
.stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: 48px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.stat { text-align: center; padding: 0 48px; }

.stat-value {
  font-family: 'Archivo Black', sans-serif;
  font-size: 48px;
  color: var(--accent);
  display: block;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 13px;
  color: var(--text-muted);
  max-width: 180px;
  line-height: 1.5;
}

.stat-divider {
  width: 1px;
  height: 60px;
  background: var(--border);
}

/* Features */
.features {
  padding: 100px 48px;
}

.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(28px, 3.5vw, 48px);
  color: var(--text);
  margin-bottom: 64px;
  max-width: 480px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
}

.feature-card {
  background: var(--bg);
  padding: 36px;
  transition: background 0.2s;
}

.feature-card:hover { background: var(--surface); }

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 20px;
}

.feature-name {
  font-family: 'Archivo Black', sans-serif;
  font-size: 18px;
  color: var(--text);
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.65;
}

/* Closing */
.closing {
  padding: 120px 48px;
  border-top: 1px solid var(--border);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.closing::before {
  content: '';
  position: absolute;
  bottom: -150px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(255,77,28,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.closing-content { max-width: 720px; margin: 0 auto; }

.closing-headline {
  font-size: clamp(28px, 4vw, 52px);
  color: var(--text);
  margin-bottom: 32px;
  line-height: 1.15;
}

.closing-headline em {
  font-style: normal;
  color: var(--accent);
}

.closing-body {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 48px;
  line-height: 1.75;
}

.closing-rule {
  width: 48px;
  height: 2px;
  background: var(--accent);
  margin: 0 auto 32px;
}

.closing-tagline {
  font-family: 'Archivo Black', sans-serif;
  font-size: 16px;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* Footer */
.footer {
  padding: 32px 48px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-logo {
  font-family: 'Archivo Black', sans-serif;
  font-size: 16px;
  color: var(--text-muted);
}

.footer-logo .os { color: var(--accent); }

.footer-note {
  font-size: 13px;
  color: var(--text-muted);
  font-style: italic;
}

/* Responsive */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding: 60px 24px; }
  .hero-visual { display: none; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .stats { flex-direction: column; gap: 32px; }
  .stat-divider { display: none; }
  .stat { padding: 0; }
}

@media (max-width: 600px) {
  .nav { padding: 16px 24px; }
  .hero { padding: 40px 24px; }
  .features { padding: 64px 24px; }
  .features-grid { grid-template-columns: 1fr; }
  .closing { padding: 80px 24px; }
  .footer { padding: 24px; flex-direction: column; gap: 8px; }
  .stats { padding: 32px 24px; }
  .stat-value { font-size: 36px; }
}