:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #0f1420;
  --bg-card: #141925;
  --bg-card-hover: #1a2030;
  --text-primary: #e8eaf0;
  --text-secondary: #8b92a5;
  --text-muted: #5a6178;
  --accent-green: #00e5a0;
  --accent-green-dim: rgba(0, 229, 160, 0.15);
  --accent-red: #ff4d6a;
  --accent-red-dim: rgba(255, 77, 106, 0.12);
  --accent-amber: #ffb340;
  --accent-amber-dim: rgba(255, 179, 64, 0.12);
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);
  --font-body: 'Space Grotesk', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --radius: 12px;
  --radius-sm: 8px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

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

/* ── LAYOUT ── */
.section-container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--accent-green);
  margin-bottom: 16px;
}

/* ── HERO ── */
.hero {
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(0, 229, 160, 0.06) 0%, transparent 60%);
}

.hero-grid {
  max-width: 1120px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 100px;
  background: var(--accent-green-dim);
  border: 1px solid rgba(0, 229, 160, 0.25);
  margin-bottom: 32px;
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0, 229, 160, 0.4); }
  50% { opacity: 0.7; box-shadow: 0 0 0 6px rgba(0, 229, 160, 0); }
}

.badge-text {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--accent-green);
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  max-width: 820px;
}

.glitch-text {
  color: var(--accent-red);
  position: relative;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.7;
  margin-bottom: 56px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 28px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  max-width: fit-content;
}

.stat-block {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--accent-green);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  max-width: 180px;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* ── VITALS ── */
.vitals {
  padding: 100px 0;
  background: var(--bg-secondary);
}

.vitals h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 48px;
  max-width: 560px;
}

.vitals-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.vital-card {
  padding: 32px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: border-color 0.2s, transform 0.2s;
}

.vital-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.vital-severity {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  padding: 4px 10px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 16px;
}

.vital-critical .vital-severity {
  color: var(--accent-red);
  background: var(--accent-red-dim);
}

.vital-warning .vital-severity {
  color: var(--accent-amber);
  background: var(--accent-amber-dim);
}

.vital-icon {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.vital-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.vital-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ── HOW ── */
.how {
  padding: 100px 0;
}

.how h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 56px;
}

.steps-flow {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.step {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  padding: 32px 0;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-green);
  min-width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent-green-dim);
  border: 1px solid rgba(0, 229, 160, 0.25);
  flex-shrink: 0;
}

.step-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-content p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 600px;
}

.step-connector {
  width: 1px;
  height: 24px;
  background: linear-gradient(to bottom, rgba(0, 229, 160, 0.3), transparent);
  margin-left: 20px;
}

/* ── TIERS ── */
.tiers {
  padding: 100px 0;
  background: var(--bg-secondary);
}

.tiers h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 48px;
}

.tiers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.tier-card {
  padding: 36px 28px;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border);
  position: relative;
  transition: border-color 0.2s;
}

.tier-card:hover {
  border-color: var(--border-hover);
}

.tier-highlight {
  border-color: rgba(0, 229, 160, 0.3);
  background: linear-gradient(180deg, rgba(0, 229, 160, 0.04) 0%, var(--bg-card) 40%);
}

.tier-badge-pop {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--bg-primary);
  background: var(--accent-green);
  padding: 4px 12px;
  border-radius: 100px;
  position: absolute;
  top: -10px;
  left: 28px;
}

.tier-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.tier-price {
  font-size: 2.8rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 4px;
}

.tier-price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-muted);
}

.tier-freq {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-green);
  margin-bottom: 28px;
}

.tier-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tier-features li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding-left: 20px;
  position: relative;
}

.tier-features li::before {
  content: '\2713';
  position: absolute;
  left: 0;
  color: var(--accent-green);
  font-weight: 600;
  font-size: 0.85rem;
}

.tier-note {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 24px;
}

/* ── CLOSING ── */
.closing {
  padding: 120px 0;
  background: radial-gradient(ellipse 60% 50% at 50% 100%, rgba(0, 229, 160, 0.05) 0%, transparent 60%);
}

.closing-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.closing h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 20px;
}

.closing p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ── FOOTER ── */
.site-footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
}

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

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

.footer-logo {
  font-weight: 700;
  font-size: 1rem;
}

.footer-tagline {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-dot {
  color: var(--text-muted);
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .hero {
    padding: 80px 20px 60px;
  }

  .hero-stats {
    flex-direction: column;
    gap: 20px;
    padding: 24px;
    width: 100%;
  }

  .stat-divider {
    width: 100%;
    height: 1px;
  }

  .stat-label {
    max-width: none;
  }

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

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

  .step {
    gap: 20px;
  }

  .footer-content {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.8rem;
  }

  .hero-sub {
    font-size: 1rem;
  }
}