:root {
  --color-navy: #0F172A;
  --color-slate: #475569;
  --color-blue: #2563EB;
  --color-light: #E2E8F0;
  --color-white: #ffffff;
  --font-heading: 'DM Sans', sans-serif;
  --font-body: 'Inter', sans-serif;
  --shadow-card: 0 20px 45px rgba(15, 23, 42, 0.08);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-navy);
  background-color: var(--color-white);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover,
a:focus {
  color: var(--color-blue);
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.container.narrow {
  width: min(800px, 92vw);
}

.site-header {
  background-color: var(--color-white);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0;
  gap: 24px;
}

.logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-navy);
}

.main-nav {
  display: flex;
  gap: 18px;
  font-weight: 500;
  font-size: 0.95rem;
}

.main-nav a {
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: background 0.2s ease, color 0.2s ease;
}

.main-nav a:hover,
.main-nav a:focus,
.main-nav a.active {
  background-color: rgba(37, 99, 235, 0.1);
  color: var(--color-blue);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn.primary {
  background-color: var(--color-blue);
  color: var(--color-white);
  box-shadow: 0 18px 30px rgba(37, 99, 235, 0.25);
}

.btn.primary:hover,
.btn.primary:focus {
  transform: translateY(-1px);
  box-shadow: 0 22px 40px rgba(37, 99, 235, 0.28);
}

.btn.secondary {
  background-color: rgba(15, 23, 42, 0.05);
  color: var(--color-navy);
}

.btn.secondary:hover,
.btn.secondary:focus {
  transform: translateY(-1px);
}

.hero {
  padding: 96px 0 72px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(15, 23, 42, 0.08));
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 48px;
  align-items: center;
}

.hero-content h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 5vw, 3.4rem);
  margin-bottom: 20px;
  color: var(--color-navy);
}

.hero-content p {
  font-size: 1.05rem;
  color: var(--color-slate);
}

.hero-eyebrow {
  font-size: 0.95rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-blue);
}

.hero-actions {
  margin-top: 32px;
  display: flex;
  gap: 16px;
}

.hero-image {
  min-height: 320px;
  border-radius: var(--radius-lg);
  background: url('https://images.unsplash.com/photo-1521737604893-d14cc237f11d?auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
  box-shadow: var(--shadow-card);
}

.section {
  padding: 84px 0;
}

.section.light {
  background-color: var(--color-light);
}

.section h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.9rem, 3vw, 2.4rem);
  margin-bottom: 18px;
  color: var(--color-navy);
}

.section-lead {
  font-size: 1.05rem;
  color: var(--color-slate);
  margin-bottom: 38px;
}

.section-grid {
  display: grid;
  gap: 48px;
  align-items: start;
}

.section-grid.two-column {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 24px;
  padding: 0;
  margin: 0;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-blue);
}

.stat-label {
  color: var(--color-slate);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.cards-grid.three {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
  padding: 28px;
  border-radius: var(--radius-lg);
  background-color: var(--color-white);
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 50px rgba(15, 23, 42, 0.12);
}

.card h3 {
  margin-top: 0;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--color-navy);
}

.card p {
  color: var(--color-slate);
}

.timeline {
  display: grid;
  gap: 32px;
}

.timeline-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 20px;
  align-items: start;
}

.timeline-step {
  display: inline-flex;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--color-blue);
  color: var(--color-white);
  font-weight: 700;
  align-items: center;
  justify-content: center;
}

.benefits {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 24px;
}

.benefits h3 {
  font-family: var(--font-heading);
  margin-bottom: 8px;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.testimonial {
  padding: 32px;
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.testimonial blockquote {
  margin: 0 0 16px;
  font-style: italic;
  color: var(--color-navy);
}

.testimonial .name {
  font-weight: 600;
  color: var(--color-navy);
}

.testimonial .role {
  color: var(--color-slate);
  font-size: 0.9rem;
}

.call-to-action {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(71, 85, 105, 0.12));
}

.cta-card {
  padding: 48px;
  border-radius: var(--radius-lg);
  background-color: var(--color-white);
  box-shadow: var(--shadow-card);
  text-align: center;
}

.cta-card h2 {
  margin-bottom: 16px;
}

.cta-card p {
  color: var(--color-slate);
  margin-bottom: 24px;
}

.site-footer {
  background-color: var(--color-navy);
  color: rgba(226, 232, 240, 0.9);
  padding: 56px 0 32px;
}

.site-footer .logo {
  color: var(--color-white);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 32px;
  margin-bottom: 32px;
}

.footer-links {
  display: grid;
  gap: 12px;
  font-size: 0.95rem;
}

.footer-links a {
  color: rgba(226, 232, 240, 0.85);
}

.footer-links a:hover {
  color: var(--color-white);
}

.footer-bottom {
  border-top: 1px solid rgba(226, 232, 240, 0.12);
  padding-top: 18px;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(226, 232, 240, 0.7);
}

.page-hero {
  padding: 96px 0 48px;
  background: linear-gradient(120deg, rgba(15, 23, 42, 0.08), rgba(37, 99, 235, 0.08));
  text-align: center;
}

.page-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 2.8rem);
}

.page-hero p {
  font-size: 1.05rem;
  color: var(--color-slate);
}

.two-column {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
}

.course-detail {
  margin-bottom: 56px;
}

.course-detail h2 {
  margin-bottom: 12px;
}

.course-detail ul {
  padding-left: 20px;
  color: var(--color-slate);
}

.modules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.module {
  padding: 28px;
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.timeline-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
  color: var(--color-slate);
}

.cta-simple {
  text-align: center;
}

.cta-simple p {
  color: var(--color-slate);
  margin-bottom: 24px;
}

.profiles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.profile-card {
  display: grid;
  grid-template-columns: 96px 1fr;
  gap: 20px;
  background-color: var(--color-white);
  padding: 28px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.profile-avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.25), rgba(15, 23, 42, 0.25));
}

.profile-card .role {
  font-weight: 600;
  color: var(--color-blue);
  margin-bottom: 12px;
}

.profile-card .tags {
  font-size: 0.9rem;
  color: var(--color-slate);
  margin-top: 12px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 40px;
}

.contact-card {
  background-color: var(--color-light);
  padding: 32px;
  border-radius: var(--radius-lg);
}

.contact-card p {
  margin: 0 0 12px;
  color: var(--color-navy);
}

.contact-form {
  display: grid;
  gap: 16px;
  background-color: var(--color-white);
  padding: 32px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.contact-form label {
  font-weight: 600;
  color: var(--color-navy);
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  padding: 12px;
  border: 1px solid rgba(15, 23, 42, 0.12);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: var(--font-body);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.map {
  width: 100%;
  min-height: 320px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.6), rgba(15, 23, 42, 0.8)), url('https://images.unsplash.com/photo-1528909514045-2fa4ac7a08ba?auto=format&fit=crop&w=1300&q=80') center/cover no-repeat;
  box-shadow: var(--shadow-card);
}

.legal h2 {
  font-size: 1.4rem;
  margin-top: 36px;
}

.legal p {
  color: var(--color-slate);
}

@media (max-width: 960px) {
  .site-header .container {
    flex-wrap: wrap;
  }

  .main-nav {
    order: 3;
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
  }

  .hero {
    padding-top: 72px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: start;
  }

  .site-footer {
    text-align: center;
  }

  .footer-grid {
    justify-items: center;
  }

  .profile-card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .profile-avatar {
    margin: 0 auto;
  }
}

@media (max-width: 640px) {
  .site-header .container {
    padding: 18px 0;
  }

  .hero {
    padding-bottom: 56px;
  }

  .hero-image {
    min-height: 220px;
  }

  .cards-grid,
  .modules-grid,
  .profiles-grid,
  .testimonials-grid {
    gap: 18px;
  }

  .card,
  .module,
  .profile-card,
  .testimonial {
    padding: 24px;
  }

  .cta-card {
    padding: 36px 24px;
  }
}