:root {
  color: #17221d;
  background: #f7f4ed;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; background: #f7f4ed; color: #17221d; }
a { color: #175b43; }
.lessons-header {
  align-items: center;
  background: rgba(247, 244, 237, .96);
  border-bottom: 1px solid rgba(23, 34, 29, .12);
  display: flex;
  justify-content: space-between;
  padding: 18px clamp(20px, 5vw, 72px);
  position: sticky;
  top: 0;
  z-index: 5;
}
.lessons-brand { align-items: center; color: inherit; display: flex; gap: 10px; text-decoration: none; }
.lessons-brand img { height: 32px; width: 32px; }
.lessons-header nav { display: flex; gap: 24px; }
.lessons-header nav a { color: inherit; font-size: .92rem; font-weight: 700; text-decoration: none; }
.lessons-layout { padding: clamp(46px, 8vw, 96px) 20px 80px; }
.lessons-article {
  background: #fff;
  border: 1px solid rgba(23, 34, 29, .09);
  border-radius: 24px;
  box-shadow: 0 24px 80px rgba(41, 55, 48, .08);
  margin: 0 auto;
  max-width: 820px;
  padding: clamp(30px, 7vw, 76px);
}
.lessons-article .eyebrow { color: #9a6628; font-size: .76rem; font-weight: 800; letter-spacing: .16em; margin: 0 0 18px; }
.lessons-article h1 { font-family: Georgia, "Times New Roman", serif; font-size: clamp(2.35rem, 6vw, 4.8rem); letter-spacing: -.045em; line-height: .98; margin: 0 0 38px; }
.lessons-article h2 { font-family: Georgia, "Times New Roman", serif; font-size: clamp(1.7rem, 4vw, 2.45rem); line-height: 1.12; margin: 52px 0 20px; }
.lessons-article p, .lessons-article li { font-size: 1.06rem; line-height: 1.78; }
.lessons-article p { margin: 0 0 22px; }
.lessons-article p strong:first-child { color: #183f31; font-size: 1.08em; }
.lessons-article em { color: #52625a; }
.lessons-article hr { border: 0; border-top: 1px solid #d8ddd8; margin: 48px 0; }
.lessons-article ul { padding-left: 24px; }
.lessons-footer { align-items: center; display: flex; justify-content: center; gap: 12px; padding: 0 20px 48px; color: #637068; font-size: .9rem; }
.lessons-footer a { color: inherit; font-weight: 800; text-decoration: none; }

@media (max-width: 620px) {
  .lessons-header { align-items: flex-start; gap: 14px; padding: 15px 18px; }
  .lessons-brand strong { font-size: .82rem; }
  .lessons-header nav { gap: 14px; }
  .lessons-header nav a { font-size: .78rem; }
  .lessons-header nav a:first-child { display: none; }
  .lessons-layout { padding: 24px 12px 48px; }
  .lessons-article { border-radius: 18px; padding: 28px 22px; }
  .lessons-article p, .lessons-article li { font-size: 1rem; line-height: 1.68; }
  .lessons-footer { flex-direction: column; }
}