:root {
  --bg: #f7f5f0;
  --bg-alt: #eeeae2;
  --fg: #0e0e14;
  --fg-muted: #5a5a6e;
  --accent: #c8ff00;
  --accent-dark: #a8d900;
  --border: #d8d4cc;
  --card-bg: #ffffff;
  --step-num: #c8ff00;
  --font-display: 'Syne', sans-serif;
  --font-body: 'Instrument Sans', 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;
}

/* NAV */
.nav {
  padding: 20px 40px;
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: baseline;
  gap: 16px;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  color: var(--fg);
  letter-spacing: -0.02em;
}
.nav-tagline {
  font-size: 13px;
  color: var(--fg-muted);
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* HERO */
.hero {
  padding: 100px 40px 80px;
  border-bottom: 1px solid var(--border);
}
.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 20px;
}
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--fg);
  margin-bottom: 24px;
}
.hero-sub {
  font-size: 17px;
  color: var(--fg-muted);
  line-height: 1.65;
  max-width: 480px;
}
.hero-display {
  background: var(--fg);
  border-radius: 16px;
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.signal-counter {}
.counter-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  margin-bottom: 8px;
}
.counter-number {
  font-family: var(--font-display);
  font-size: 52px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.04em;
  line-height: 1;
}
.signal-row {
  display: flex;
  align-items: center;
  gap: 10px;
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
}
.signal-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}
.signal-dot.active {
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.signal-status {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  font-weight: 500;
}

/* SECTION COMMON */
.monitor, .flow, .philosophy, .closing, .footer {
  padding: 80px 40px;
}
.monitor-inner, .flow-inner, .philosophy-inner, .closing-inner, .footer-inner {
  max-width: 1100px;
  margin: 0 auto;
}
.section-title {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--fg);
  margin-bottom: 12px;
}
.section-sub {
  font-size: 16px;
  color: var(--fg-muted);
  margin-bottom: 48px;
  max-width: 520px;
}

/* MONITOR GRID */
.monitor {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}
.monitor-header { margin-bottom: 0; }
.monitor-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.monitor-card {
  background: var(--card-bg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.card-icon {
  color: var(--fg-muted);
  width: 20px;
  height: 20px;
}
.card-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.015em;
}
.card-body {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.55;
}

/* FLOW STEPS */
.flow {
  border-bottom: 1px solid var(--border);
}
.flow-steps {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 0;
  align-items: center;
}
.flow-step {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.step-number {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 800;
  color: var(--accent-dark);
  letter-spacing: 0.05em;
}
.step-body h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}
.step-body p {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.6;
}
.flow-arrow {
  width: 48px;
  height: 2px;
  background: var(--border);
  position: relative;
  margin: 0 20px;
}
.flow-arrow::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  border: 5px solid transparent;
  border-left: 6px solid var(--border);
}

/* PHILOSOPHY */
.philosophy {
  background: var(--fg);
  color: #fff;
}
.philosophy blockquote {
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: #fff;
  max-width: 800px;
  margin-bottom: 56px;
}
.philosophy-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
.philosophy-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.philosophy-body {
  font-size: 15px;
  color: rgba(255,255,255,0.6);
  line-height: 1.6;
}

/* CLOSING */
.closing {
  background: var(--accent);
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.closing-headline {
  font-family: var(--font-display);
  font-size: clamp(44px, 6vw, 80px);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--fg);
  line-height: 1.0;
  margin-bottom: 24px;
}
.closing-sub {
  font-size: 18px;
  color: rgba(14,14,20,0.65);
  max-width: 540px;
  line-height: 1.65;
}

/* FOOTER */
.footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 32px 40px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.footer-brand {
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.footer-name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  color: var(--fg);
}
.footer-slug {
  font-size: 13px;
  color: var(--fg-muted);
}
.footer-note {
  font-size: 13px;
  color: var(--fg-muted);
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .monitor-grid {
    grid-template-columns: 1fr;
  }
  .flow-steps {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .flow-arrow {
    display: none;
  }
  .philosophy-features {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .footer-inner {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }
  .nav { padding: 16px 20px; }
  .hero { padding: 60px 20px 50px; }
  .monitor, .flow, .philosophy, .closing { padding: 60px 20px; }
}

@media (max-width: 480px) {
  .hero-headline { font-size: 36px; }
  .closing-headline { font-size: 40px; }
  .section-title { font-size: 26px; }
}