:root {
  --bg: #0a0f14;
  --bg-elevated: #111921;
  --bg-card: #161f2a;
  --fg: #e8ecf0;
  --fg-muted: #8a95a3;
  --fg-dim: #5a6573;
  --accent: #00d4aa;
  --accent-glow: rgba(0, 212, 170, 0.15);
  --accent-dim: #00a888;
  --red-muted: #ff6b6b;
  --green-muted: #00d4aa;
  --border: #1e2a36;
  --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 {
  padding: 120px 24px 80px;
  max-width: 1000px;
  margin: 0 auto;
}

.hero-inner {
  margin-bottom: 64px;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2.5px;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 32px;
  background: var(--accent-glow);
}

.hero h1 {
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

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

.lede {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 600px;
  line-height: 1.7;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  border-top: 1px solid var(--border);
  padding-top: 40px;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.03em;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ── Problem ── */
.problem {
  padding: 100px 24px;
  background: var(--bg-elevated);
}

.problem-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.problem h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  margin-bottom: 48px;
  letter-spacing: -0.01em;
}

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

.problem-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

.problem-card.new {
  border-color: var(--accent);
  background: linear-gradient(135deg, var(--bg-card), rgba(0, 212, 170, 0.05));
}

.card-label {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 20px;
}

.problem-card.old .card-label {
  color: var(--fg-dim);
}

.problem-card.new .card-label {
  color: var(--accent);
}

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

.problem-card.old li {
  color: var(--fg-muted);
  padding-left: 20px;
  position: relative;
}

.problem-card.old li::before {
  content: '\2715';
  position: absolute;
  left: 0;
  color: var(--red-muted);
  font-size: 0.85rem;
}

.problem-card.new li {
  color: var(--fg);
  padding-left: 20px;
  position: relative;
}

.problem-card.new li::before {
  content: '\2713';
  position: absolute;
  left: 0;
  color: var(--green-muted);
  font-size: 0.85rem;
}

/* ── Features ── */
.features {
  padding: 100px 24px;
  max-width: 1000px;
  margin: 0 auto;
}

.features h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  margin-bottom: 56px;
  letter-spacing: -0.01em;
}

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

.feature-item {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  padding: 36px 0;
  border-bottom: 1px solid var(--border);
}

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

.feature-icon {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  min-width: 40px;
  padding-top: 4px;
}

.feature-content h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.feature-content p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ── How ── */
.how {
  padding: 100px 24px;
  background: var(--bg-elevated);
}

.how-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.how h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  margin-bottom: 24px;
  letter-spacing: -0.01em;
}

.how-text {
  font-size: 1.1rem;
  color: var(--fg-muted);
  max-width: 650px;
  line-height: 1.7;
  margin-bottom: 48px;
}

.how-points {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.how-point {
  display: flex;
  align-items: center;
  gap: 16px;
}

.point-marker {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
  flex-shrink: 0;
}

.how-point p {
  font-size: 1.05rem;
  color: var(--fg);
}

/* ── Closing ── */
.closing {
  padding: 120px 24px;
  text-align: center;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-elevated) 100%);
}

.closing-inner {
  max-width: 700px;
  margin: 0 auto;
}

.closing h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.closing-text {
  font-size: 1.1rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* ── Footer ── */
.site-footer {
  padding: 40px 24px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--fg);
}

.footer-note {
  font-size: 0.85rem;
  color: var(--fg-dim);
}

/* ── Responsive ── */
@media (max-width: 700px) {
  .hero {
    padding: 80px 20px 60px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .hero-stat {
    flex-direction: row;
    align-items: baseline;
    gap: 12px;
  }

  .stat-number {
    font-size: 2rem;
  }

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

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

  .features, .problem, .how {
    padding: 60px 20px;
  }

  .closing {
    padding: 80px 20px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}