:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-alt: #eef3f8;
  --text: #172033;
  --muted: #5f6f86;
  --line: #d8e0ea;
  --brand: #183a63;
  --brand-2: #295b97;
  --accent: #9fb8d6;
  --shadow: 0 18px 45px rgba(17, 29, 48, 0.08);
  --radius: 20px;
  --radius-sm: 12px;
  --max: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #f7f9fc 0%, #eef3f8 100%);
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
p { margin: 0 0 1rem; }
h1, h2, h3, h4 { line-height: 1.15; margin: 0 0 1rem; }
img { max-width: 100%; display: block; }
.container { width: min(var(--max), calc(100% - 2rem)); margin: 0 auto; }
.narrow { width: min(820px, calc(100% - 2rem)); }
.section { padding: 5rem 0; }
.section-alt { background: rgba(255,255,255,0.55); border-top: 1px solid rgba(216,224,234,0.7); border-bottom: 1px solid rgba(216,224,234,0.7); }
.section-heading { max-width: 760px; margin-bottom: 2rem; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.14em; font-size: 0.8rem; font-weight: 700; color: var(--brand-2); margin-bottom: 0.8rem; }
.lead { font-size: 1.12rem; color: var(--muted); }
.card {
  background: rgba(255,255,255,0.9);
  border: 1px solid rgba(216,224,234,0.85);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(247,249,252,0.8);
  border-bottom: 1px solid rgba(216,224,234,0.7);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  gap: 1rem;
}
.brand { font-size: 1.2rem; font-weight: 800; color: var(--brand); }
.nav { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.nav a { color: var(--muted); font-weight: 600; }
.nav a:hover { color: var(--brand); }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.95rem 1.25rem;
  border-radius: 999px;
  font-weight: 700;
  transition: 0.18s ease;
  border: 1px solid transparent;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: #102a47; }
.btn-secondary { background: #fff; color: var(--brand); border-color: var(--line); }
.btn-secondary:hover, .btn-outline:hover { border-color: var(--brand); }
.btn-outline { border-color: var(--line); }
.btn-sm { padding: 0.7rem 1rem; }
.hero { padding: 5.8rem 0 4rem; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.9fr;
  gap: 2rem;
  align-items: center;
}
.hero h1, .page-hero h1 { font-size: clamp(2.4rem, 6vw, 4.5rem); letter-spacing: -0.04em; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin: 1.5rem 0; }
.hero-points {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}
.hero-points li {
  background: rgba(24,58,99,0.08);
  border: 1px solid rgba(24,58,99,0.08);
  color: var(--brand);
  padding: 0.65rem 0.9rem;
  border-radius: 999px;
  font-weight: 600;
}
.hero-card { padding: 2rem; }
.feature-list { display: grid; gap: 1.15rem; }
.feature-list p { color: var(--muted); margin-bottom: 0; }
.trust-strip { padding-bottom: 1rem; }
.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.trust-item {
  background: rgba(255,255,255,0.72);
  border: 1px solid rgba(216,224,234,0.85);
  border-radius: var(--radius-sm);
  padding: 1.3rem;
}
.stat { display: block; font-size: 1.6rem; font-weight: 800; color: var(--brand); margin-bottom: 0.3rem; }
.cards { display: grid; gap: 1.2rem; }
.cards-3 { grid-template-columns: repeat(3, 1fr); }
.course-card { padding: 1.6rem; }
.featured { border-color: rgba(24,58,99,0.28); }
.tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.4rem 0.6rem;
  border-radius: 999px;
  background: rgba(24,58,99,0.1);
  color: var(--brand);
  margin-bottom: 0.9rem;
}
.tag.muted { background: rgba(95,111,134,0.12); color: var(--muted); }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.step { padding: 1.7rem; }
.step-number { display: inline-block; font-size: 0.9rem; font-weight: 800; color: var(--brand-2); margin-bottom: 0.8rem; }
.split-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2rem;
  align-items: start;
}
.check-list { display: grid; gap: 1.2rem; }
.check-list div { padding: 1.25rem 1.35rem; background: rgba(255,255,255,0.72); border: 1px solid rgba(216,224,234,0.85); border-radius: var(--radius-sm); }
.faq-list { display: grid; gap: 1rem; }
details { padding: 1.2rem 1.3rem; }
summary { cursor: pointer; font-weight: 700; }
summary::-webkit-details-marker { display: none; }
.cta-section { padding: 5rem 0; }
.cta {
  padding: 2rem;
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  align-items: center;
}
.cta-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.site-footer {
  background: #14263f;
  color: rgba(255,255,255,0.9);
  padding: 3rem 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 2rem;
}
.footer-grid h4, .footer-grid h3 { color: #fff; }
.footer-grid a { display: block; margin-bottom: 0.5rem; color: rgba(255,255,255,0.82); }
.page-hero { padding: 5.5rem 0 2.5rem; }
.bio-grid, .credentials-grid {
  display: grid;
  gap: 1.2rem;
}
.bio-grid { grid-template-columns: 1fr 1fr; }
.credentials-grid { grid-template-columns: repeat(3, 1fr); }
.bio-grid .card, .credentials-grid .card, .philosophy-card { padding: 1.6rem; }
.bullet-list { padding-left: 1.2rem; margin: 0; }
.bullet-list li { margin-bottom: 0.75rem; }

@media (max-width: 980px) {
  .hero-grid,
  .cards-3,
  .steps,
  .split-layout,
  .footer-grid,
  .credentials-grid,
  .bio-grid,
  .trust-grid {
    grid-template-columns: 1fr;
  }
  .cta { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 760px) {
  .nav-wrap { align-items: flex-start; padding: 1rem 0; }
  .nav { justify-content: flex-start; }
  .hero { padding-top: 4.5rem; }
  .section, .cta-section { padding: 4rem 0; }
}