:root {
  --bg: #0a0a0a;
  --fg: #e8e8e8;
  --fg-muted: #888;
  --accent: #c8ff00;
  --accent-dim: rgba(200, 255, 0, 0.12);
  --card-bg: #111;
  --card-border: #1a1a1a;
  --font-primary: 'Space Grotesk', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

html {
  scroll-behavior: smooth;
}

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

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 2rem;
  position: relative;
  background: 
    radial-gradient(ellipse 60% 40% at 50% 0%, rgba(200, 255, 0, 0.04) 0%, transparent 70%),
    var(--bg);
}

.hero-grid {
  text-align: center;
  max-width: 800px;
}

.hero-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  color: var(--accent);
  margin-bottom: 2rem;
  text-transform: uppercase;
}

.hero-title {
  font-size: clamp(4rem, 12vw, 10rem);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.os-suffix {
  color: var(--accent);
  font-weight: 500;
}

.hero-tagline {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  color: var(--fg-muted);
  font-weight: 400;
  margin-bottom: 3rem;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  padding: 1.5rem 2.5rem;
  border: 1px solid var(--card-border);
  border-radius: 2px;
  background: var(--card-bg);
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--accent);
}

.stat-label {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.stat-divider {
  width: 1px;
  height: 2.5rem;
  background: var(--card-border);
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* ===== MANIFESTO ===== */
.manifesto {
  padding: 8rem 2rem;
  display: flex;
  justify-content: center;
  border-top: 1px solid var(--card-border);
}

.manifesto-inner {
  max-width: 700px;
}

.manifesto-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--accent);
  margin-bottom: 2rem;
}

.manifesto-text {
  font-size: clamp(1.3rem, 3vw, 1.75rem);
  line-height: 1.6;
  color: var(--fg-muted);
  font-weight: 400;
}

.manifesto-text .highlight {
  color: var(--fg);
  font-weight: 600;
}

/* ===== FEATURES ===== */
.features {
  padding: 4rem 2rem 8rem;
}

.features-grid {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--card-border);
  border: 1px solid var(--card-border);
}

.feature-card {
  padding: 3rem;
  background: var(--bg);
  transition: background 0.3s ease;
}

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

.feature-number {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  margin-bottom: 1.5rem;
  letter-spacing: 0.1em;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.feature-desc {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* ===== CLOSING ===== */
.closing {
  padding: 8rem 2rem;
  text-align: center;
  border-top: 1px solid var(--card-border);
  background:
    radial-gradient(ellipse 50% 50% at 50% 100%, rgba(200, 255, 0, 0.03) 0%, transparent 70%),
    var(--bg);
}

.closing-inner {
  max-width: 700px;
  margin: 0 auto;
}

.closing-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--fg-muted);
  margin-bottom: 2.5rem;
}

.closing-headline {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.closing-accent {
  color: var(--accent);
}

.closing-sub {
  font-size: 1rem;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 500px;
  margin: 0 auto;
}

/* ===== FOOTER ===== */
.site-footer {
  padding: 2rem;
  border-top: 1px solid var(--card-border);
}

.footer-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.footer-mark {
  color: var(--fg);
  font-weight: 500;
}

.footer-sep {
  color: var(--fg-muted);
}

.footer-polsia {
  color: var(--fg-muted);
}

.footer-right {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--fg-muted);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero-stats {
    flex-direction: column;
    gap: 1rem;
    padding: 1.5rem;
  }

  .stat-divider {
    width: 2.5rem;
    height: 1px;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .feature-card {
    padding: 2rem;
  }

  .manifesto {
    padding: 5rem 1.5rem;
  }

  .closing {
    padding: 5rem 1.5rem;
  }

  .closing-headline br {
    display: none;
  }
}