/* ── Variables ───────────────────────────────────────────────────────────── */
:root {
  --navy:       #0D1B2A;
  --navy-dark:  #080f18;
  --teal:       #009B8D;
  --teal-dark:  #007a6e;
  --light:      #F5F7FA;
  --border:     #e8edf3;
  --text-muted: rgba(255, 255, 255, 0.72);
  --font:       'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ── Reset ───────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font); color: var(--navy); line-height: 1.6; }
img  { display: block; max-width: 100%; }
a    { text-decoration: none; color: inherit; }

/* ── Layout ──────────────────────────────────────────────────────────────── */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Navigation ──────────────────────────────────────────────────────────── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--navy);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  color: #fff;
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.1em;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 10px 22px;
  border-radius: 6px;
  font-family: var(--font);
  font-weight: 600;
  font-size: 0.9rem;
  line-height: 1;
  border: 2px solid transparent;
  transition: opacity 0.15s ease, transform 0.15s ease;
  cursor: pointer;
}
.btn:hover { opacity: 0.85; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary { background: var(--teal); color: #fff; }
.btn-outline  { background: transparent; color: #fff; border-color: rgba(255, 255, 255, 0.45); }
.btn-outline:hover { border-color: #fff; opacity: 1; }

.btn-lg { padding: 14px 32px; font-size: 1rem; }

/* ── Hero ────────────────────────────────────────────────────────────────── */
.hero {
  background: var(--navy);
  color: #fff;
  padding: 96px 0 112px;
  text-align: center;
}
.hero-label {
  display: inline-block;
  background: rgba(0, 155, 141, 0.12);
  color: var(--teal);
  border: 1px solid rgba(0, 155, 141, 0.35);
  border-radius: 20px;
  padding: 5px 18px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 28px;
}
.hero h1 {
  font-size: clamp(1.9rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 22px;
}
.hero-sub {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.75;
}
.hero-ctas {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Sections ────────────────────────────────────────────────────────────── */
.section { padding: 80px 0; }
.section-light { background: var(--light); }
.section-dark  { background: var(--navy);  color: #fff; }
.section-teal  { background: var(--teal);  color: #fff; }

.section-title {
  font-size: clamp(1.55rem, 3vw, 2.2rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.section-dark .section-title,
.section-teal .section-title { color: #fff; }

.section-sub {
  text-align: center;
  max-width: 580px;
  margin: 0 auto 48px;
  font-size: 1.02rem;
  line-height: 1.7;
  color: #555;
}
.section-dark .section-sub  { color: var(--text-muted); }
.section-teal .section-sub  { color: rgba(255, 255, 255, 0.82); }

/* ── Grid ────────────────────────────────────────────────────────────────── */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ── Problem cards ───────────────────────────────────────────────────────── */
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-left: 4px solid var(--teal);
  border-radius: 8px;
  padding: 28px 28px 28px 24px;
}
.card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 10px;
}
.card p {
  font-size: 0.92rem;
  color: #5a6474;
  line-height: 1.7;
}

/* ── Solution pillars ────────────────────────────────────────────────────── */
.pillar {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-top: 3px solid var(--teal);
  border-radius: 8px;
  padding: 32px 22px;
  text-align: center;
}
.pillar-num {
  display: block;
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--teal);
  line-height: 1;
  margin-bottom: 14px;
}
.pillar h3 {
  font-size: 0.98rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}
.pillar p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ── Segment cards ───────────────────────────────────────────────────────── */
.segment-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 36px 28px;
  text-align: center;
  transition: box-shadow 0.2s ease;
}
.segment-card:hover {
  box-shadow: 0 4px 20px rgba(0, 155, 141, 0.1);
}
.segment-icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
  display: block;
}
.segment-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 10px;
}
.segment-card p {
  font-size: 0.92rem;
  color: #5a6474;
  line-height: 1.7;
}

/* ── Traction ────────────────────────────────────────────────────────────── */
.traction-item {
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  padding: 28px;
}
.traction-item h3 {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}
.traction-item p {
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.86);
  line-height: 1.7;
}
.traction-note {
  text-align: center;
  margin-top: 36px;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.72);
}

/* ── Card number prefix & span ───────────────────────────────────────────── */
.card-num {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--teal);
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}
.card-span-2 { grid-column: 1 / -1; }

/* ── CTA section ─────────────────────────────────────────────────────────── */
.cta-section { text-align: center; }
.cta-section h2 {
  font-size: clamp(1.45rem, 3vw, 2rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}
.cta-section p {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 500px;
  margin: 0 auto 36px;
}

/* ── Footer ──────────────────────────────────────────────────────────────── */
footer {
  background: var(--navy-dark);
  padding: 28px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: rgba(255, 255, 255, 0.45);
  font-size: 0.85rem;
}
.footer-inner .logo {
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.95rem;
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 960px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 680px) {
  .grid-2,
  .grid-3,
  .grid-4 { grid-template-columns: 1fr; }

  .hero { padding: 60px 0 76px; }

  .nav-inner .btn { padding: 8px 16px; font-size: 0.82rem; }

  .footer-inner { justify-content: center; text-align: center; }
}