:root {
  --bg-base: #06090e;
  --bg-surface: rgba(13, 18, 30, 0.7);
  --bg-card: rgba(15, 23, 42, 0.55);
  --bg-card-hover: rgba(24, 34, 58, 0.75);
  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-accent: rgba(56, 189, 248, 0.28);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-faint: #64748b;
  --accent-cyan: #38bdf8;
  --accent-glow: rgba(56, 189, 248, 0.12);
  --status-green: #10b981;
  --status-glow: rgba(16, 185, 129, 0.2);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-base);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 50% -10%, rgba(56, 189, 248, 0.15), transparent 45%),
    radial-gradient(circle at 85% 60%, rgba(37, 99, 235, 0.08), transparent 40%),
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 64px 64px, 64px 64px;
}

.container {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  padding: 32px 0;
  border-bottom: 1px solid var(--border-subtle);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(6, 9, 14, 0.75);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-main);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.brand-logo {
  width: 28px;
  height: 28px;
}

.status-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 9999px;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--status-green);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--status-green);
  box-shadow: 0 0 10px var(--status-green);
  animation: pulse-dot 2.5s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

/* Hero Section */
.hero {
  padding: 96px 0 72px;
  text-align: center;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 9999px;
  font-size: 0.85rem;
  color: var(--accent-cyan);
  margin-bottom: 28px;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.hero-title {
  font-size: clamp(2.6rem, 5.5vw, 4.2rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.035em;
  margin-bottom: 24px;
  background: linear-gradient(180deg, #ffffff 40%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 40px;
  font-weight: 400;
  line-height: 1.6;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 0.925rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
}

.btn-primary {
  background: var(--text-main);
  color: var(--bg-base);
  border: 1px solid transparent;
}

.btn-primary:hover {
  background: #e2e8f0;
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
  transform: translateY(-1px);
}

/* Pillars Section */
.pillars {
  padding: 32px 0 96px;
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.pillar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 32px 28px;
  backdrop-filter: blur(10px);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
}

.pillar-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: 0 12px 30px -10px var(--accent-glow);
}

.pillar-icon-box {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  margin-bottom: 20px;
}

.pillar-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.pillar-desc {
  font-size: 0.925rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Footer */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-subtle);
  padding: 40px 0;
  background: rgba(6, 9, 14, 0.9);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--text-faint);
}

.footer-email {
  font-family: var(--font-mono);
  font-size: 0.825rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-email:hover {
  color: var(--accent-cyan);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 16px;
}

.social-link {
  color: var(--text-muted);
  transition: color 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.social-link:hover {
  color: var(--text-main);
}

@media (max-width: 640px) {
  .hero {
    padding: 60px 0 40px;
  }
  .site-header {
    padding: 20px 0;
  }
  .header-content {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
  .status-badge {
    padding: 5px 10px;
    font-size: 0.7rem;
  }
  .footer-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }
  .hero-cta {
    flex-direction: column;
    width: 100%;
  }
  .btn {
    justify-content: center;
    width: 100%;
  }
}