* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: Inter, sans-serif; background: #f8fafc; color: #1f2937; }
img { max-width: 100%; height: auto; }
header { background: #3c5e41; color: white; padding: 2rem; text-align: center; }
header h1 { margin: 0; display: flex; align-items: center; justify-content: center; gap: .75rem; font-size: 2rem; }
header h1 img { width: 48px; height: 32px; object-fit: cover; border-radius: 4px; }
nav { display: flex; align-items: center; justify-content: center; gap: 1.5rem; margin-top: 1rem; }
nav > a, .learning-menu > summary { padding: .5rem 1rem; color: white; border-radius: 6px; font-weight: 600; text-decoration: none; cursor: pointer; list-style: none; transition: background .2s, color .2s; }
nav > a:hover, .learning-menu > summary:hover, .learning-menu[open] > summary { color: #facc15; background: #1e40af; }
.learning-menu { position: relative; }
.learning-menu summary::-webkit-details-marker { display: none; }
.learning-menu summary::after { content: " ▾"; font-size: .75rem; }
.learning-menu > div { min-width: 220px; padding: 8px; position: absolute; top: calc(100% + 8px); right: 0; z-index: 10; display: grid; gap: 3px; background: white; border-radius: 10px; box-shadow: 0 14px 35px rgba(15,23,42,.22); text-align: left; }
.learning-menu > div a { padding: 10px 12px; color: #1f2937; border-radius: 7px; text-decoration: none; }
.learning-menu > div a:hover { color: #166534; background: #f0fdf4; }
.hero { padding: 4rem 2rem; text-align: center; background: linear-gradient(135deg,#e0f2fe 60%,#fef9c3 100%); }
.hero h2 { margin: 0 0 1rem; font-size: 2.5rem; }
.hero p { margin-bottom: 2rem; font-size: 1.2rem; }
.cta-buttons { display: flex; justify-content: center; flex-wrap: wrap; gap: 1rem; }
.cta-buttons a { padding: 1rem 2rem; display: inline-flex; align-items: center; gap: .5rem; color: white; background: #10b981; border-radius: 8px; font-weight: 700; text-decoration: none; }
.cta-buttons a:hover { background: #059669; }
.cta-buttons img { width: 27px; height: 24px; object-fit: contain; }
.intro { max-width: 760px; margin: 2rem auto; padding: 2rem; background: #fffbea; border-radius: 1rem; box-shadow: 0 2px 8px rgba(0,0,0,.04); }
.intro h2 { margin-top: 0; color: #2563eb; }
.intro p { font-size: 1.08rem; line-height: 1.75; }
.learn-more-btn { margin: 1rem .35rem 0 0; padding: .75rem 1.2rem; display: inline-block; color: white; background: #2563eb; border-radius: 8px; font-weight: 600; text-decoration: none; }
.learn-more-btn:hover { background: #1e40af; }
.features { padding: 4rem 2rem; display: grid; grid-template-columns: repeat(3,1fr); gap: 2rem; }
.feature { padding: 2rem; background: white; border-radius: 1rem; box-shadow: 0 4px 6px rgba(0,0,0,.1); text-align: center; }
.feature > div { font-size: 2.5rem; }
.feature h3 { margin: 1rem 0; font-size: 1.3rem; }
.learning-choice { padding: 4rem 2rem; color: white; background: #315b40; text-align: center; }
.learning-choice h2 { margin: .5rem 0; font-size: 2.2rem; }
.choice-kicker { margin: 0; color: #fde047; font-size: .75rem; font-weight: 700; letter-spacing: .14em; }
.choice-links { margin-top: 1.5rem; display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; }
.choice-links a { padding: .85rem 1.3rem; color: #173e2a; background: white; border-radius: 8px; font-weight: 700; text-decoration: none; }
footer { padding: 2rem; color: white; background: #1e293b; border-top: 4px solid #facc15; text-align: center; }
.footer-links { display: flex; justify-content: center; gap: 18px; }
.footer-links a { color: #dbeafe; }
@media (max-width: 700px) {
  header { padding: 1rem; }
  header h1 { flex-direction: column; font-size: 1.2rem; }
  nav { gap: .25rem; flex-wrap: wrap; }
  nav > a, .learning-menu > summary { padding: .45rem .6rem; font-size: .85rem; }
  .learning-menu > div { right: 50%; transform: translateX(50%); }
  .hero { padding: 2.5rem 1rem; }
  .hero h2 { font-size: 2rem; }
  .cta-buttons { display: grid; }
  .features { padding: 2rem 1rem; grid-template-columns: 1fr; }
  .intro { margin: 1rem; padding: 1.4rem; }
}