.lesson-learning { margin: 0 23px 18px; padding: 15px 17px; border: 1px solid #dce7d3; border-radius: 12px; background: #f8fbf3; }
.learning-overview { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; color: #526c42; font-size: 12px; }
.learning-key-chips { display: flex; gap: 6px; }
.learning-key-chips kbd { min-width: 30px; padding: 5px 8px; border: 1px solid #c4d7ae; border-radius: 6px; background: #fff; box-shadow: 0 2px 0 #dce6d1; color: #456332; font: 700 16px ui-monospace, monospace; text-align: center; }
.learning-total { margin-left: auto; color: #7c8d6e; font-size: 11px; }
.learning-steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(70px, 1fr)); gap: 6px; list-style: none; padding: 0; margin: 14px 0; }
.learning-steps li { display: flex; flex-direction: column; align-items: center; gap: 5px; min-width: 0; padding: 7px 3px; border: 1px solid #e0e8d8; border-radius: 7px; background: #f1f5eb; color: #8b9781; text-align: center; }
.learning-steps li > span { display: grid; place-items: center; width: 19px; height: 19px; border-radius: 50%; background: #e3eadb; font-size: 10px; font-weight: 700; }
.learning-steps small { font-size: 10px; line-height: 1.4; overflow-wrap: anywhere; }
.learning-steps .current { border-color: #8aaa67; color: #3e5e2d; background: #eaf2df; box-shadow: 0 0 0 1px #bed0a5; }
.learning-steps .current > span { background: #709052; color: #fff; }
.learning-steps .done { color: #708b56; background: #f2f7e9; }
.learning-steps .done > span { color: #fff; background: #a4bc87; }
.learning-instruction { display: flex; gap: 14px; align-items: center; justify-content: space-between; border-top: 1px solid #e0e8d8; padding-top: 11px; }
.learning-instruction strong { font-size: 13px; color: #405e31; }
.learning-instruction p { margin-top: 5px; font-size: 12px; line-height: 1.75; color: #637957; }
#learning-round-progress { flex-shrink: 0; color: #7b8e6b; font-size: 11px; font-variant-numeric: tabular-nums; }
.course-scope { display: block; margin-top: 10px; color: #728365; font-size: 11px; line-height: 1.6; }
.curriculum-note { border: 1px solid #e6dfca; padding: 13px 17px; margin: 14px 0; background: #fbf8ed; border-radius: 9px; font-size: 12px; color: #8c7a52; line-height: 1.8; }
.practice-controls { padding-top: 0; padding-bottom: 14px; }
.practice-controls .practice-progress { min-width: 0; }
.practice-controls .control-buttons { flex-shrink: 0; }
.practice-controls #start-button { min-height: 44px; min-width: 124px; padding: 10px 18px; font-size: 14px; box-shadow: 0 3px 0 #405c35; }
.practice-controls #start-button:disabled { box-shadow: none; }
@media (max-width:760px) {
  .lesson-learning { margin: 0 13px 14px; padding: 12px; }
  .learning-total { flex-basis: 100%; margin-left: 0; }
  .learning-steps { grid-template-columns: repeat(4,minmax(0,1fr)); }
  .learning-instruction { align-items: flex-start; flex-direction: column; gap: 6px; }
  .learning-key-chips kbd { font-size: 14px; }
}
.lesson-toolbar .toolbar-buttons .sound-toggle { width: auto; gap: 5px; padding: 6px 8px; white-space: nowrap; }
.sound-toggle span { font-size: 11px; line-height: 1.4; }
.sound-toggle[aria-pressed="true"] { color: #638648; }
@media (max-width: 440px) {
  .practice-controls { flex-wrap: wrap; gap: 12px; }
  .practice-controls .practice-progress { flex-basis: 100%; }
  .practice-controls .control-buttons { width: 100%; gap: 8px; }
  .practice-controls #start-button { flex: 1; }
  .practice-controls .control-buttons .icon-button { width: 40px; height: 44px; }
  .lesson-toolbar .toolbar-buttons .sound-toggle { gap: 3px; padding: 4px; }
  .sound-toggle span { font-size: 9px; }
  .sound-toggle svg { width: 17px; }
}