:root {
  --bg-primary: #0a0f0d;
  --bg-secondary: #0f1613;
  --bg-card: #141e1a;
  --bg-card-hover: #1a2822;
  --fg-primary: #e8ede9;
  --fg-secondary: #8a9b8f;
  --fg-muted: #5a6b5f;
  --accent: #34d399;
  --accent-dim: #1a7a52;
  --accent-glow: rgba(52, 211, 153, 0.12);
  --old-accent: #ef4444;
  --old-bg: #1a1414;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --max-width: 1100px;
  --section-pad: clamp(60px, 10vw, 120px);
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--bg-primary);
  color: var(--fg-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

/* --- HERO --- */
.hero {
  position: relative;
  padding: clamp(80px, 15vw, 160px) 24px var(--section-pad);
  text-align: left;
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero-inner {
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid rgba(52, 211, 153, 0.2);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 32px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--fg-primary);
  margin-bottom: 24px;
}

.hero .lede {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--fg-secondary);
  max-width: 640px;
  line-height: 1.7;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  gap: 32px;
  align-items: center;
  flex-wrap: wrap;
}

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

.stat-number {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  font-size: 0.82rem;
  color: var(--fg-muted);
  max-width: 180px;
}

.stat-divider {
  width: 1px;
  height: 48px;
  background: rgba(138, 155, 143, 0.15);
}

.hero-gradient {
  position: absolute;
  top: -100px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(52, 211, 153, 0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 1;
}

/* --- PROBLEM --- */
.problem {
  padding: var(--section-pad) 24px;
  background: var(--bg-secondary);
}

.problem-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-label {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--fg-muted);
  margin-bottom: 16px;
}

.problem h2, .how h2, .difference h2, .closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 48px;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.problem-card {
  background: var(--bg-card);
  border: 1px solid rgba(138, 155, 143, 0.08);
  border-radius: 12px;
  padding: 32px 28px;
  transition: background 0.2s;
}

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

.problem-icon {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-dim);
  margin-bottom: 20px;
}

.problem-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--fg-primary);
}

.problem-card p {
  font-size: 0.92rem;
  color: var(--fg-secondary);
  line-height: 1.6;
}

/* --- HOW --- */
.how {
  padding: var(--section-pad) 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.how-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline-item {
  display: flex;
  gap: 32px;
  padding-bottom: 48px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  width: 20px;
  padding-top: 6px;
}

.marker-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(52, 211, 153, 0.3);
  flex-shrink: 0;
}

.marker-line {
  width: 2px;
  flex-grow: 1;
  background: linear-gradient(to bottom, var(--accent-dim), transparent);
  margin-top: 8px;
}

.timeline-content h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 8px;
}

.timeline-content p {
  font-size: 0.95rem;
  color: var(--fg-secondary);
  line-height: 1.7;
  max-width: 560px;
}

/* --- DIFFERENCE --- */
.difference {
  padding: var(--section-pad) 24px;
  background: var(--bg-secondary);
}

.difference-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.comparison-col {
  border-radius: 12px;
  padding: 32px 28px;
}

.comparison-col.old {
  background: var(--old-bg);
  border: 1px solid rgba(239, 68, 68, 0.12);
}

.comparison-col.new {
  background: var(--bg-card);
  border: 1px solid rgba(52, 211, 153, 0.15);
}

.comparison-header {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.comparison-col.old .comparison-header {
  color: var(--old-accent);
}

.comparison-col.new .comparison-header {
  color: var(--accent);
}

.comparison-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.comparison-col li {
  font-size: 0.92rem;
  color: var(--fg-secondary);
  padding-left: 20px;
  position: relative;
  line-height: 1.5;
}

.comparison-col.old li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 2px;
  background: rgba(239, 68, 68, 0.4);
}

.comparison-col.new li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 2px;
  background: var(--accent);
}

/* --- CLOSING --- */
.closing {
  padding: var(--section-pad) 24px;
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
}

.closing-inner {
  position: relative;
}

.closing-accent {
  width: 60px;
  height: 3px;
  background: var(--accent);
  margin: 0 auto 32px;
  border-radius: 2px;
}

.closing p {
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  color: var(--fg-secondary);
  max-width: 580px;
  margin: 0 auto 20px;
  line-height: 1.7;
}

.closing-tagline {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--accent) !important;
  font-size: clamp(1rem, 2vw, 1.15rem) !important;
  letter-spacing: -0.01em;
}

/* --- FOOTER --- */
.site-footer {
  padding: 40px 24px;
  border-top: 1px solid rgba(138, 155, 143, 0.08);
}

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

.footer-brand {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--fg-primary);
}

.footer-note {
  font-size: 0.82rem;
  color: var(--fg-muted);
}

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
  .problem-grid {
    grid-template-columns: 1fr;
  }

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

  .hero-stats {
    gap: 24px;
  }

  .stat-divider {
    display: none;
  }

  .timeline-item {
    gap: 20px;
  }

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

@media (max-width: 480px) {
  .hero-stats {
    flex-direction: column;
    align-items: flex-start;
  }
}