.alphabet-intro {
  color: var(--muted);
  line-height: 1.6;
  margin: -5px 0 20px;
}

.alphabet-scroll {
  max-height: min(49vh, 430px);
  overflow-y: auto;
  padding: 3px 8px 3px 3px;
  margin: 20px -8px 20px -3px;
  scrollbar-color: #b8cbc4 transparent;
}

.alphabet-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 9px;
}

.letter-tile {
  min-height: 72px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #fff;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  transition: .2s;
}

.letter-tile:hover {
  border-color: #83aa9d;
  background: #f1f8f5;
  transform: translateY(-2px);
}

.letter-tile strong {
  font: 800 24px Manrope, sans-serif;
}

.letter-tile small {
  color: var(--muted);
  font-size: 10px;
}

.letter-tile.special {
  border-color: #b8d6cb;
  background: #f3faf7;
}

.letter-tile.special strong {
  color: var(--green);
}

.alphabet-hint {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
  margin-top: -8px;
}

.alphabet-hint span {
  width: 9px;
  height: 9px;
  border-radius: 3px;
  background: #dcefe8;
}

.lesson-modal.alphabet-mode {
  width: min(760px, 100%);
}

.quiz-letter {
  display: block;
  font: 800 64px Manrope, sans-serif;
  color: var(--green);
  margin: 8px 0 18px;
}

.vocabulary-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 9px;
  max-height: min(48vh, 420px);
  overflow-y: auto;
  margin: 20px 0;
  padding-right: 7px;
}

.vocab-item {
  display: grid;
  grid-template-columns: 40px 1fr;
  align-items: center;
  gap: 11px;
  padding: 11px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #fff;
  text-align: left;
}

.vocab-item:hover { border-color: #8fb5a8; background: #f5faf8; }
.vocab-sound { width: 36px; height: 36px; border-radius: 50%; background: var(--mint); color: var(--green); display: grid; place-items: center; font-size: 14px; }
.vocab-words { display: flex; flex-direction: column; gap: 2px; }
.vocab-words strong { font: 700 16px Manrope, sans-serif; color: var(--ink); }
.vocab-words small { color: var(--muted); font-size: 12px; }
.voice-note { color: var(--muted); font-size: 11px; line-height: 1.5; margin: -7px 0 3px; }
.lesson-card { cursor: pointer; }
.lesson-card:focus-visible { outline: 3px solid rgba(13,102,85,.3); outline-offset: 3px; }
.course-list { display: grid; gap: 58px; }
.chapter-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 25px; margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.chapter-heading span { color: var(--green); font-size: 10px; font-weight: 800; letter-spacing: .14em; }
.chapter-heading h3 { margin: 6px 0 0; font: 750 25px Manrope,sans-serif; letter-spacing: -.03em; }
.chapter-heading p { max-width: 380px; margin: 0; color: var(--muted); font-size: 12px; line-height: 1.5; }
.chapter-lessons { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }

@media (max-width: 600px) {
  .alphabet-grid { grid-template-columns: repeat(4, 1fr); }
  .letter-tile { min-height: 64px; }
  .alphabet-scroll { max-height: 45vh; }
  .vocabulary-list { grid-template-columns: 1fr; }
  .chapter-heading { align-items: flex-start; flex-direction: column; }
  .chapter-lessons { grid-template-columns: 1fr; }
}
@media (min-width:601px) and (max-width:900px){.chapter-lessons{grid-template-columns:repeat(2,1fr)}}