:root {
  --bg-primary: #0C0F0A;
  --bg-secondary: #141914;
  --bg-card: #1A1F1A;
  --fg-primary: #E8EDE5;
  --fg-secondary: #9BA898;
  --fg-muted: #6B7A68;
  --accent: #4ADE80;
  --accent-dim: #22C55E;
  --accent-glow: rgba(74, 222, 128, 0.15);
  --danger: #EF4444;
  --danger-glow: rgba(239, 68, 68, 0.12);
  --border: #2A3228;
  --border-light: #354033;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

/* Nav */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--fg-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-logo .logo-icon {
  width: 28px;
  height: 28px;
  background: var(--accent);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
}

.nav-tag {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-glow);
  padding: 0.2rem 0.5rem;
  border-radius: 20px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Hero */
.hero {
  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 2rem 4rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--danger-glow);
  border: 1px solid rgba(239, 68, 68, 0.25);
  border-radius: 100px;
  padding: 0.4rem 1rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: #FCA5A5;
  width: fit-content;
}

.hero-badge-dot {
  width: 6px;
  height: 6px;
  background: var(--danger);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5.5vw, 4.25rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--fg-primary);
  max-width: 800px;
}

.hero h1 .accent {
  color: var(--accent);
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-secondary);
  max-width: 560px;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.hero-stat-value {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--fg-primary);
}

.hero-stat-value.danger {
  color: var(--danger);
}

.hero-stat-label {
  font-size: 0.8rem;
  color: var(--fg-muted);
  margin-top: 0.15rem;
}

/* Problem */
.problem {
  max-width: 1200px;
  margin: 0 auto;
  padding: 5rem 2rem;
}

.problem-header {
  margin-bottom: 3rem;
}

.section-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.problem h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  max-width: 650px;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.problem-card {
  background: var(--bg-secondary);
  padding: 2rem;
}

.problem-card-icon {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.problem-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.problem-card p {
  font-size: 0.9rem;
  color: var(--fg-secondary);
  line-height: 1.6;
}

/* Features */
.features {
  max-width: 1200px;
  margin: 0 auto;
  padding: 5rem 2rem;
}

.features h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 3rem;
  max-width: 600px;
}

.feature-rows {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2.25rem;
  transition: border-color 0.2s;
}

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

.feature-card.wide {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}

.feature-tag {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-glow);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
}

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

.feature-code {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.5rem;
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.8rem;
  color: var(--fg-secondary);
  line-height: 1.8;
  overflow-x: auto;
}

.feature-code .key {
  color: var(--accent);
}

.feature-code .val {
  color: #93C5FD;
}

.feature-code .comment {
  color: var(--fg-muted);
}

/* Numbers */
.numbers {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

.numbers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.number-cell {
  background: var(--bg-secondary);
  padding: 2.5rem 2rem;
  text-align: center;
}

.number-cell .value {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--fg-primary);
  margin-bottom: 0.25rem;
}

.number-cell .value.green {
  color: var(--accent);
}

.number-cell .value.red {
  color: var(--danger);
}

.number-cell .label {
  font-size: 0.8rem;
  color: var(--fg-muted);
}

/* Closing */
.closing {
  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 2rem;
  text-align: center;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  max-width: 700px;
  margin: 0 auto 1rem;
}

.closing p {
  font-size: 1.1rem;
  color: var(--fg-secondary);
  max-width: 550px;
  margin: 0 auto;
  line-height: 1.7;
}

/* Footer */
.footer {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

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

/* Responsive */
@media (max-width: 768px) {
  .hero {
    padding: 4rem 1.25rem 3rem;
  }
  .hero-stats {
    gap: 1.5rem;
    flex-wrap: wrap;
  }
  .problem-grid {
    grid-template-columns: 1fr;
  }
  .feature-row {
    grid-template-columns: 1fr;
  }
  .feature-card.wide {
    grid-column: span 1;
    grid-template-columns: 1fr;
  }
  .numbers-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .problem, .features, .numbers, .closing {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }
  .footer {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
    padding: 1.5rem 1.25rem;
  }
}