body {
  margin: 0;
  background: #ffffff;
  color: #0f172a;
  font-family: Inter, sans-serif;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.topbar {
  border-bottom: 1px solid rgba(13, 148, 136, 0.15);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: #0f172a;
  text-decoration: none;
  font-weight: 700;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 0.7rem;
  background: linear-gradient(135deg, #6ee7b7, #059669);
  color: #ffffff;
  font-weight: 800;
}

.accent {
  color: #059669;
}

.back-link {
  color: #0d9488;
  text-decoration: none;
  font-size: 0.95rem;
}

.back-link:hover {
  color: #059669;
}

.article-shell {
  padding-top: 2.5rem;
  padding-bottom: 4rem;
}

.article-card {
  background: #ffffff;
  border: 1px solid rgba(13, 148, 136, 0.18);
  border-radius: 1.5rem;
  padding: 1.5rem;
  box-shadow: 0 10px 30px rgba(5, 150, 105, 0.08);
}

.hero img {
  width: 100%;
  border-radius: 1rem;
  display: block;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(13, 148, 136, 0.12);
}

.eyebrow {
  display: inline-block;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  background: rgba(110, 231, 183, 0.25);
  border: 1px solid rgba(5, 150, 105, 0.25);
  color: #047857;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-weight: 700;
}

h1 {
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  line-height: 1.1;
  margin: 1rem 0 0.75rem;
  color: #0f172a;
}

.dek {
  color: #334155;
  font-size: 1.08rem;
  line-height: 1.8;
  max-width: 70ch;
  margin-bottom: 1.5rem;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  color: #64748b;
  font-size: 0.85rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(13, 148, 136, 0.15);
  margin-bottom: 1.5rem;
}

.content {
  max-width: 75ch;
}

.content p {
  color: #1e293b;
  font-size: 1.04rem;
  line-height: 1.9;
  margin: 0 0 1.2rem;
}

.content a {
  color: #059669;
  font-weight: 600;
}

.takeaways {
  margin-top: 2.5rem;
  background: #f0fdf4;
  border: 1px solid rgba(5, 150, 105, 0.2);
  border-radius: 1rem;
  padding: 1.5rem;
}

.takeaways h3 {
  margin: 0 0 1rem;
  color: #047857;
  font-size: 1.25rem;
}

.takeaways ul {
  margin: 0;
  padding-left: 1.2rem;
  line-height: 1.9;
  color: #1e293b;
}

@media (max-width: 640px) {
  .nav {
    flex-direction: column;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem 0;
  }

  .article-card {
    padding: 1rem;
  }
}