:root {
  --bg: #0a0a0a;
  --fg: #e8e6e3;
  --fg-dim: #8a8680;
  --accent: #c4ff4d;
  --accent-dim: rgba(196, 255, 77, 0.12);
  --card-bg: #141414;
  --border: #222;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

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

/* ========== HERO ========== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px 24px 40px;
  position: relative;
  background: radial-gradient(ellipse at 30% 20%, rgba(196, 255, 77, 0.04) 0%, transparent 60%);
}

.hero-inner {
  max-width: 720px;
  margin: 0 auto;
}

.hero-tag {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 28px;
}

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

.hero-sub {
  font-size: 18px;
  color: var(--fg-dim);
  max-width: 540px;
  line-height: 1.7;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
}

.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: pulse-line 2s ease-in-out infinite;
}

@keyframes pulse-line {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* ========== PROBLEM ========== */
.problem {
  padding: 120px 24px;
  border-top: 1px solid var(--border);
}

.problem-inner {
  max-width: 900px;
  margin: 0 auto;
}

.problem-label,
.how-label {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-dim);
  margin-bottom: 20px;
}

.problem h2,
.how h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin-bottom: 56px;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.problem-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px 28px;
}

.problem-num {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 16px;
}

.problem-card p {
  font-size: 15px;
  color: var(--fg-dim);
  line-height: 1.65;
}

/* ========== HOW IT WORKS ========== */
.how {
  padding: 120px 24px;
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, var(--bg) 0%, #0d0d0d 100%);
}

.how-inner {
  max-width: 900px;
  margin: 0 auto;
}

.how-steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
}

.how-step {
  flex: 1;
  padding: 0 24px;
}

.step-divider {
  width: 1px;
  min-height: 120px;
  background: var(--border);
  flex-shrink: 0;
  align-self: stretch;
}

.step-marker {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  display: inline-block;
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.how-step h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--fg);
}

.how-step p {
  font-size: 15px;
  color: var(--fg-dim);
  line-height: 1.65;
}

/* ========== NICHES ========== */
.niches {
  padding: 120px 24px;
  border-top: 1px solid var(--border);
}

.niches-inner {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  gap: 0;
}

.niche-block {
  padding: 0 40px;
}

.niche-divider {
  background: var(--border);
  width: 1px;
}

.niche-tag {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

.niche-block h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 16px;
  line-height: 1.3;
}

.niche-block p {
  font-size: 15px;
  color: var(--fg-dim);
  line-height: 1.7;
}

/* ========== CLOSING ========== */
.closing {
  padding: 140px 24px;
  border-top: 1px solid var(--border);
  text-align: center;
  background: radial-gradient(ellipse at 50% 80%, rgba(196, 255, 77, 0.06) 0%, transparent 60%);
}

.closing-inner {
  max-width: 640px;
  margin: 0 auto;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.closing-sub {
  font-size: 17px;
  color: var(--fg-dim);
  line-height: 1.7;
}

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

.footer-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--fg);
}

.footer-contact {
  font-size: 14px;
  color: var(--fg-dim);
}

/* ========== HERO ACTIONS ========== */
.hero-actions {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-top: 36px;
  flex-wrap: wrap;
}

.hero-btn-primary {
  display: inline-block;
  background: var(--accent);
  color: #000;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  padding: 14px 32px;
  border-radius: 10px;
  text-decoration: none;
  transition: opacity 0.15s;
}
.hero-btn-primary:hover { opacity: 0.85; }

.hero-btn-secondary {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 500;
  color: var(--fg-dim);
  text-decoration: none;
  transition: color 0.15s;
}
.hero-btn-secondary:hover { color: var(--fg); }

/* ========== CLOSING ACTIONS ========== */
.closing-actions {
  display: flex;
  gap: 20px;
  align-items: center;
  justify-content: center;
  margin-top: 40px;
  flex-wrap: wrap;
}

.closing-btn {
  display: inline-block;
  background: var(--accent);
  color: #000;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  padding: 15px 36px;
  border-radius: 10px;
  text-decoration: none;
  transition: opacity 0.15s;
}
.closing-btn:hover { opacity: 0.85; }

.closing-link {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 500;
  color: var(--fg-dim);
  text-decoration: none;
  transition: color 0.15s;
}
.closing-link:hover { color: var(--fg); }

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

  .how-steps {
    flex-direction: column;
    gap: 40px;
  }

  .step-divider {
    width: 100%;
    min-height: 0;
    height: 1px;
  }

  .how-step {
    padding: 0;
  }

  .niches-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .niche-divider {
    display: none;
  }

  .niche-block {
    padding: 0;
  }

  .hero {
    padding: 60px 20px 40px;
  }

  .problem,
  .how,
  .niches {
    padding: 80px 20px;
  }

  .closing {
    padding: 100px 20px;
  }
}