:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --fg: #e8e8ed;
  --fg-muted: #8b8b9e;
  --accent: #6ee7b7;
  --accent-dim: rgba(110, 231, 183, 0.1);
  --accent-glow: rgba(110, 231, 183, 0.15);
  --border: rgba(255, 255, 255, 0.06);
  --radius: 12px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
}

/* HERO */
.hero {
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 80px 10vw;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-badge {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--accent);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 32px;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  margin-bottom: 24px;
  max-width: 800px;
}

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

.lede {
  font-size: 1.2rem;
  color: var(--fg-muted);
  max-width: 580px;
  margin-bottom: 48px;
  line-height: 1.7;
}

.hero-stat {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 24px 32px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.stat-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  font-size: 1rem;
  color: var(--fg-muted);
}

/* PROBLEM */
.problem {
  padding: 120px 10vw;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.problem-inner {
  max-width: 900px;
}

.problem h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 20px;
}

.problem-text {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 650px;
  margin-bottom: 48px;
  line-height: 1.7;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.problem-card {
  padding: 28px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.problem-icon {
  display: block;
  font-size: 1.8rem;
  color: var(--accent);
  margin-bottom: 16px;
  font-weight: 700;
}

.problem-card p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* FEATURES */
.features {
  padding: 120px 10vw;
}

.features h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 12px;
}

.features-sub {
  color: var(--fg-muted);
  font-size: 1.1rem;
  margin-bottom: 64px;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.feature-item {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
}

.feature-item:first-child {
  border-top: 1px solid var(--border);
}

.feature-number {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  min-width: 32px;
  padding-top: 4px;
}

.feature-content h3 {
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.feature-content p {
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 560px;
}

/* HOW */
.how {
  padding: 120px 10vw;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.how h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 48px;
}

.how-grid {
  max-width: 800px;
}

.how-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.how-col {
  padding: 32px;
  border-radius: var(--radius);
}

.how-col h4 {
  font-size: 1rem;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
}

.how-old {
  background: var(--bg);
  border: 1px solid var(--border);
}

.how-old h4 {
  color: var(--fg-muted);
}

.how-old ul li {
  color: var(--fg-muted);
  text-decoration: line-through;
  opacity: 0.6;
}

.how-new {
  background: var(--accent-dim);
  border: 1px solid rgba(110, 231, 183, 0.2);
}

.how-new h4 {
  color: var(--accent);
}

.how-new ul li {
  color: var(--fg);
}

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

.how-col ul li {
  font-size: 0.95rem;
  line-height: 1.5;
}

/* CLOSING */
.closing {
  padding: 140px 10vw;
  text-align: center;
}

.closing h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  max-width: 700px;
  margin: 0 auto 20px;
}

.closing-text {
  color: var(--fg-muted);
  font-size: 1.15rem;
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.7;
}

/* FOOTER */
.site-footer {
  padding: 40px 10vw;
  border-top: 1px solid var(--border);
  text-align: center;
}

.site-footer p {
  color: var(--fg-muted);
  font-size: 0.85rem;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .hero {
    padding: 60px 6vw;
    min-height: 80vh;
  }

  .problem,
  .features,
  .how,
  .closing {
    padding: 80px 6vw;
  }

  .how-compare {
    grid-template-columns: 1fr;
  }

  .feature-item {
    flex-direction: column;
    gap: 12px;
  }

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

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