:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #1a1a25;
  --fg: #e8e8ed;
  --fg-muted: #9494a8;
  --accent: #6ee7b7;
  --accent-dim: rgba(110, 231, 183, 0.12);
  --accent-glow: rgba(110, 231, 183, 0.25);
  --border: rgba(255, 255, 255, 0.06);
  --radius: 16px;
  --radius-sm: 10px;
}

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

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'DM Sans', sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

/* ─── HERO ─── */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.hero-inner {
  max-width: 720px;
  text-align: center;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  background: var(--accent-dim);
  border: 1px solid rgba(110, 231, 183, 0.2);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.03em;
  margin-bottom: 32px;
}

.hero h1 {
  font-size: clamp(2.6rem, 6vw, 4.2rem);
  margin-bottom: 28px;
  color: #fff;
}

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

.lede {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.35;
  filter: blur(100px);
  pointer-events: none;
}

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

.problem-inner {
  max-width: 960px;
  margin: 0 auto;
}

.problem h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  text-align: center;
  margin-bottom: 56px;
  color: #fff;
}

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

.problem-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 28px;
  text-align: center;
}

.problem-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
}

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

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

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

.features-header {
  text-align: center;
  margin-bottom: 56px;
}

.features-header h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  color: #fff;
  margin-bottom: 16px;
}

.features-sub {
  color: var(--fg-muted);
  font-size: 1.05rem;
  max-width: 520px;
  margin: 0 auto;
}

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

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  transition: border-color 0.2s;
}

.feature-card:hover {
  border-color: rgba(110, 231, 183, 0.25);
}

.feature-highlight {
  border-color: rgba(110, 231, 183, 0.15);
  background: linear-gradient(135deg, var(--bg-card), rgba(110, 231, 183, 0.04));
}

.feature-icon {
  font-size: 1.8rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.2rem;
  color: #fff;
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--fg-muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

/* ─── AUDIENCE ─── */
.audience {
  padding: 100px 24px;
  background: var(--bg);
}

.audience-inner {
  max-width: 800px;
  margin: 0 auto;
}

.audience h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  text-align: center;
  margin-bottom: 56px;
  color: #fff;
}

.audience-columns {
  display: flex;
  gap: 48px;
  align-items: flex-start;
}

.audience-col {
  flex: 1;
}

.audience-divider {
  width: 1px;
  align-self: stretch;
  background: linear-gradient(to bottom, transparent, var(--accent), transparent);
  opacity: 0.3;
}

.audience-label {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 20px;
}

.audience-col ul {
  list-style: none;
}

.audience-col li {
  color: var(--fg-muted);
  padding: 10px 0;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--border);
  position: relative;
  padding-left: 18px;
}

.audience-col li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  transform: translateY(-50%);
}

.audience-col li:last-child {
  border-bottom: none;
}

/* ─── CLOSING ─── */
.closing {
  padding: 120px 24px;
  background: var(--bg-elevated);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.closing::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  bottom: -200px;
  left: 50%;
  transform: translateX(-50%);
  opacity: 0.2;
  filter: blur(80px);
  pointer-events: none;
}

.closing-inner {
  max-width: 640px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.closing h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  color: #fff;
  margin-bottom: 24px;
}

.closing-text {
  color: var(--fg-muted);
  font-size: 1.1rem;
  line-height: 1.75;
}

/* ─── FOOTER ─── */
.site-footer {
  padding: 48px 24px;
  background: var(--bg);
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-brand {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff;
  margin-bottom: 6px;
}

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

/* ─── RESPONSIVE ─── */
@media (max-width: 768px) {
  .problem-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

  .audience-columns {
    flex-direction: column;
    gap: 32px;
  }

  .audience-divider {
    width: 100%;
    height: 1px;
    align-self: auto;
    background: linear-gradient(to right, transparent, var(--accent), transparent);
  }

  .hero {
    min-height: 70vh;
    padding: 100px 20px 60px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }
}