:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: #151c2c;
  --fg-primary: #e8ecf1;
  --fg-secondary: #8b95a8;
  --fg-muted: #5a6478;
  --accent: #00d4aa;
  --accent-dim: rgba(0, 212, 170, 0.15);
  --accent-glow: rgba(0, 212, 170, 0.3);
  --border: rgba(255, 255, 255, 0.06);
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

body {
  background: var(--bg-primary);
  color: var(--fg-primary);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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;
  padding: 100px 40px 80px;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 6px 16px;
  border-radius: 4px;
  margin-bottom: 32px;
}

.hero h1 {
  font-size: clamp(42px, 7vw, 80px);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 28px;
  color: var(--fg-primary);
}

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

.lede {
  font-size: clamp(18px, 2.2vw, 22px);
  color: var(--fg-secondary);
  max-width: 620px;
  line-height: 1.6;
}

.hero-visual {
  position: absolute;
  right: -60px;
  top: 50%;
  transform: translateY(-50%);
  width: 400px;
  height: 400px;
  opacity: 0.2;
}

.node-grid {
  position: relative;
  width: 100%;
  height: 100%;
}

.node {
  position: absolute;
  width: 12px;
  height: 12px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 20px var(--accent-glow);
}

.n1 { top: 20%; left: 10%; }
.n2 { top: 10%; left: 60%; }
.n3 { top: 45%; left: 35%; }
.n4 { top: 40%; left: 80%; }
.n5 { top: 75%; left: 20%; }
.n6 { top: 80%; left: 70%; }

.line {
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg, var(--accent-glow), transparent);
  transform-origin: left center;
}

.l1 { top: 22%; left: 12%; width: 180px; transform: rotate(-8deg); }
.l2 { top: 46%; left: 37%; width: 160px; transform: rotate(-5deg); }
.l3 { top: 21%; left: 62%; width: 100px; transform: rotate(75deg); }
.l4 { top: 76%; left: 22%; width: 180px; transform: rotate(-3deg); }
.l5 { top: 47%; left: 36%; width: 120px; transform: rotate(60deg); }

/* ── PROBLEM ── */
.problem {
  padding: 100px 40px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.problem-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.problem h2 {
  font-size: clamp(28px, 4vw, 40px);
  margin-bottom: 56px;
  letter-spacing: -0.02em;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.problem-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 36px 28px;
}

.problem-num {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.problem-card h3 {
  font-size: 20px;
  margin-bottom: 12px;
  color: var(--fg-primary);
}

.problem-card p {
  font-size: 15px;
  color: var(--fg-secondary);
  line-height: 1.6;
}

/* ── SERVICES ── */
.services {
  padding: 100px 40px;
  max-width: 1100px;
  margin: 0 auto;
}

.services-header {
  margin-bottom: 64px;
}

.services-header h2 {
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.services-sub {
  font-size: 18px;
  color: var(--fg-secondary);
  max-width: 560px;
}

.services-columns {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  gap: 48px;
  align-items: start;
}

.service-divider {
  background: linear-gradient(180deg, transparent, var(--accent-dim), var(--accent-glow), var(--accent-dim), transparent);
  height: 100%;
  min-height: 300px;
}

.service-icon {
  font-size: 12px;
  letter-spacing: 4px;
  color: var(--accent);
  margin-bottom: 20px;
}

.service-block h3 {
  font-size: 24px;
  margin-bottom: 24px;
  letter-spacing: -0.01em;
}

.service-block ul {
  list-style: none;
  margin-bottom: 24px;
}

.service-block li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 10px;
  color: var(--fg-secondary);
  font-size: 15px;
}

.service-block li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 1px;
}

.service-note {
  font-size: 14px;
  color: var(--fg-muted);
  font-style: italic;
  border-left: 2px solid var(--accent-dim);
  padding-left: 16px;
}

/* ── WHY ── */
.why {
  padding: 100px 40px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.why-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.why h2 {
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: -0.02em;
  margin-bottom: 56px;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}

.why-item {
  padding: 28px 0;
  border-top: 1px solid var(--border);
}

.why-marker {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 2px;
  margin-bottom: 16px;
}

.why-item h4 {
  font-size: 19px;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.why-item p {
  font-size: 15px;
  color: var(--fg-secondary);
  line-height: 1.6;
}

/* ── FOOTER ── */
.site-footer {
  padding: 80px 40px;
  text-align: center;
}

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

.vision-text {
  font-size: clamp(18px, 2.5vw, 22px);
  color: var(--fg-secondary);
  line-height: 1.7;
  margin-bottom: 48px;
  font-style: italic;
}

.footer-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-size: 13px;
  color: var(--fg-muted);
  font-family: var(--font-display);
  letter-spacing: 0.03em;
}

.footer-dot {
  opacity: 0.4;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .hero {
    padding: 80px 24px 60px;
    min-height: 70vh;
  }

  .hero-visual {
    display: none;
  }

  .problem { padding: 64px 24px; }

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

  .services { padding: 64px 24px; }

  .services-columns {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .service-divider {
    display: none;
  }

  .why { padding: 64px 24px; }

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

  .site-footer { padding: 48px 24px; }

  .footer-meta {
    flex-direction: column;
    gap: 4px;
  }

  .footer-dot { display: none; }
}