:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #16161f;
  --fg: #e8e8ed;
  --fg-muted: #8888a0;
  --fg-dim: #55556a;
  --accent: #6cf5a5;
  --accent-dim: rgba(108, 245, 165, 0.12);
  --accent-glow: rgba(108, 245, 165, 0.06);
  --border: #22223a;
  --radius: 12px;
  --max-width: 1100px;
}

* {
  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;
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section-tag {
  display: inline-block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 24px;
}

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

/* ===== HERO ===== */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding: 120px 24px 80px;
  background: radial-gradient(ellipse 80% 60% at 50% -10%, rgba(108, 245, 165, 0.07) 0%, transparent 70%), var(--bg);
}

.hero-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
}

.hero-label {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 28px;
}

.hero h1 {
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  max-width: 820px;
  margin-bottom: 28px;
  color: var(--fg);
}

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

.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 600px;
  margin-bottom: 56px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}

.hero-btn-primary {
  display: inline-block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--bg);
  background: var(--accent);
  padding: 14px 28px;
  border-radius: 8px;
  text-decoration: none;
  transition: opacity 0.2s ease, box-shadow 0.2s ease;
}

.hero-btn-primary:hover {
  opacity: 0.88;
  box-shadow: 0 0 28px rgba(108, 245, 165, 0.3);
}

.hero-btn-secondary {
  display: inline-block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--fg-muted);
  background: transparent;
  padding: 14px 28px;
  border-radius: 8px;
  text-decoration: none;
  border: 1px solid var(--border);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.hero-btn-secondary:hover {
  color: var(--fg);
  border-color: rgba(108, 245, 165, 0.3);
}

.hero-stats {
  display: flex;
  gap: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

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

.stat-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--fg);
}

.stat-label {
  font-size: 0.82rem;
  color: var(--fg-dim);
}

/* ===== PROBLEM ===== */
.problem {
  padding: 120px 0;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.problem-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.problem-left h2 {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  color: var(--fg);
}

.problem-right p {
  color: var(--fg-muted);
  margin-bottom: 20px;
  font-size: 1.05rem;
}

.problem-right .highlight {
  color: var(--accent);
  font-weight: 500;
  font-size: 1.1rem;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

/* ===== SERVICES ===== */
.services {
  padding: 120px 0;
}

.services h2 {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  margin-bottom: 56px;
  max-width: 550px;
}

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

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.service-card:hover {
  border-color: rgba(108, 245, 165, 0.3);
  box-shadow: 0 0 40px var(--accent-glow);
}

.card-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 20px;
  letter-spacing: 0.05em;
}

.service-card h3 {
  font-size: 1.25rem;
  margin-bottom: 14px;
  color: var(--fg);
}

.service-card p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  margin-bottom: 20px;
  line-height: 1.6;
}

.card-detail {
  font-size: 0.85rem;
  color: var(--accent);
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-weight: 500;
}

/* ===== HOW ===== */
.how {
  padding: 120px 0;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.how h2 {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  margin-bottom: 64px;
  max-width: 550px;
}

.steps {
  display: flex;
  align-items: flex-start;
  gap: 24px;
}

.step {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
}

.step-marker {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 16px;
}

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

.step-arrow {
  font-size: 1.4rem;
  color: var(--fg-dim);
  padding-top: 36px;
  flex-shrink: 0;
}

/* ===== CLOSING ===== */
.closing {
  padding: 140px 0;
}

.closing-block {
  max-width: 780px;
  margin: 0 auto;
  text-align: center;
}

.closing-block h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--fg);
  line-height: 1.4;
  margin-bottom: 24px;
}

.closing-sub {
  font-size: 1.15rem;
  color: var(--accent);
  font-weight: 500;
}

/* ===== FOOTER ===== */
.site-footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--fg);
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero {
    min-height: auto;
    padding: 80px 20px 60px;
  }

  .hero-stats {
    flex-direction: column;
    gap: 24px;
  }

  .problem-split {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .service-cards {
    grid-template-columns: 1fr;
  }

  .steps {
    flex-direction: column;
  }

  .step-arrow {
    transform: rotate(90deg);
    text-align: center;
    padding: 0;
    width: 100%;
  }

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

  .problem,
  .services,
  .how,
  .closing {
    padding: 80px 0;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.8rem;
  }

  .service-card {
    padding: 28px 20px;
  }
}