:root {
  --bg: #ffffff;
  --bg-muted: #f9fafb;
  --text: #0f172a;
  --text-muted: #475569;
  --border: #e5e7eb;
  --accent: #f97316;
  --accent-2: #fb923c;
  --font-heading: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Manrope', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius: 12px;
  --shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
  --transition: 180ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

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

button,
a {
  font: inherit;
  color: inherit;
}

a {
  text-decoration: none;
}

a:hover,
a:focus-visible {
  text-decoration: underline;
}

p {
  color: var(--text-muted);
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  color: var(--text);
}

h1 {
  font-size: clamp(2.25rem, 4vw, 3.25rem);
  line-height: 1.1;
}

h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
}

main {
  display: block;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 1rem;
  background: var(--accent);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  z-index: 1000;
}

.skip-link:focus {
  left: 1rem;
}

.container {
  width: min(1100px, 100% - 2.5rem);
  margin-inline: auto;
}

.section {
  padding-block: 3rem;
}

.section-muted {
  background: var(--bg-muted);
}

.section__header {
  text-align: left;
  margin-bottom: 2rem;
}

.section__subtitle {
  margin-top: 0.5rem;
  color: var(--text-muted);
}

.lead {
  margin-top: 1rem;
  font-size: 1.125rem;
  color: var(--text-muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  cursor: pointer;
}

.btn:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 3px;
}

.btn-accent {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow);
}

.btn-accent:hover,
.btn-accent:focus-visible {
  background: var(--accent-2);
}

.btn-ghost {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  background: rgba(249, 115, 22, 0.1);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: var(--bg);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  gap: 1rem;
}

.nav__brand {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav__links ul {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav__links a {
  color: var(--text-muted);
  font-weight: 500;
}

.nav__links a.active {
  color: var(--accent);
}

.nav__cta {
  font-weight: 600;
}

.nav__toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
}

.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(4px);
  z-index: 998;
}

.hero {
  padding-block: 4rem;
}

.hero__inner {
  display: grid;
  gap: 2.5rem;
}

.hero__actions {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero__media {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__illustration {
  width: min(100%, 360px);
  filter: drop-shadow(var(--shadow));
  border-radius: calc(var(--radius) * 2);
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.card {
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  transition: transform var(--transition), box-shadow var(--transition);
  min-height: 100%;
}

.card:hover,
.card:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.12);
}

.card__icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
}

.card__meta {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent);
}

.card__actions {
  margin-top: auto;
}

.card__actions .btn {
  width: fit-content;
}

.value-card {
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 1.75rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  text-align: left;
  transition: transform var(--transition), box-shadow var(--transition);
}

.value-card:hover,
.value-card:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.12);
}

.value-card__icon svg {
  width: 48px;
  height: 48px;
}

.cta {
  text-align: center;
}

.cta__inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

.footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  margin-top: 4rem;
}

.footer__inner {
  padding-block: 3rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.footer__about p {
  max-width: 28rem;
}

.footer__links ul {
  list-style: none;
  margin-top: 0.75rem;
  display: grid;
  gap: 0.5rem;
}

.footer__social {
  margin-top: 1.5rem;
  display: flex;
  gap: 1rem;
}

.footer__bottom {
  padding-block: 1rem;
  border-top: 1px solid var(--border);
  background: var(--bg-muted);
  text-align: center;
}

.footer__bottom small {
  color: var(--text-muted);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 480ms ease, transform 480ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 767px) {
  .nav__toggle {
    display: inline-flex;
  }

  .nav__links {
    position: fixed;
    inset: 0 0 auto auto;
    top: 0;
    right: 0;
    width: min(300px, 80vw);
    height: 100vh;
    background: var(--bg);
    box-shadow: -2px 0 24px rgba(15, 23, 42, 0.12);
    flex-direction: column;
    align-items: flex-start;
    padding: 5.5rem 2rem 2rem;
    transform: translateX(100%);
    transition: transform var(--transition);
    z-index: 999;
  }

  .nav__links[aria-hidden="false"] {
    transform: translateX(0);
  }

  .nav__links ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
    width: 100%;
  }

  .nav__cta {
    width: 100%;
  }

  .nav-overlay[hidden] {
    display: none;
  }

  .nav-overlay.is-visible {
    display: block;
  }
}

@media (min-width: 640px) {
  .grid-courses {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-services {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 768px) {
  .section {
    padding-block: 4.5rem;
  }

  .nav__links {
    position: static;
    height: auto;
    width: auto;
    transform: none !important;
    background: transparent;
    box-shadow: none;
    flex-direction: row;
    padding: 0;
  }

  .nav__links ul {
    flex-direction: row;
  }

  .nav__cta {
    width: auto;
  }

  .nav-overlay {
    display: none !important;
  }

  .grid-courses {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .grid-services {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }

  .footer__links {
    text-align: right;
  }
}

@media (min-width: 1024px) {
  .hero__inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: center;
  }

  .grid-values {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}