.learning-main,
.learning-main > section,
.learning-main > aside,
.learning-main > details {
  width: min(100% - 2rem, var(--max-width));
  margin-right: auto;
  margin-left: auto;
}

.learning-main { width: 100%; padding-bottom: 5rem; }
.learning-hero { padding: 9rem 0 3.5rem; }
.learning-hero h1 { max-width: 11ch; margin: 0.35rem 0 1rem; font-size: clamp(3.5rem, 9vw, 7.2rem); line-height: 0.88; letter-spacing: -0.065em; }
.learning-tagline { max-width: 31ch; margin-bottom: 1rem; color: var(--accent-strong); font-size: clamp(1.35rem, 3vw, 2.1rem); font-weight: 850; line-height: 1.08; }
.learning-privacy { margin-bottom: 2rem; }

.learning-start { display: grid; grid-template-columns: minmax(15rem, 0.75fr) minmax(24rem, 1.25fr) auto; gap: clamp(1rem, 3vw, 2.5rem); align-items: center; margin-bottom: 1rem; padding: clamp(1.25rem, 4vw, 2.25rem); border: 1px solid var(--accent-strong); border-radius: 0.75rem; background: linear-gradient(135deg, rgba(73, 188, 194, 0.14), rgba(7, 11, 15, 0.98) 58%); box-shadow: 0 28px 70px var(--shadow); }
.learning-start h2 { margin: 0.35rem 0 0.55rem; font-size: clamp(1.8rem, 4vw, 3rem); }
.learning-start p { margin: 0; color: var(--muted); }
.learning-start fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
.learning-start .segmented-control span { min-height: 7rem; place-items: start; align-content: center; gap: 0.3rem; padding: 1rem; }
.learning-start .segmented-control strong { color: var(--text); font-size: 1.2rem; }
.learning-start .segmented-control small { color: var(--muted); line-height: 1.4; }

.learning-context,
.learning-workspace { overflow: hidden; border: 1px solid var(--line-strong); border-radius: 0.75rem; background: linear-gradient(180deg, rgba(16, 23, 30, 0.97), rgba(7, 11, 15, 0.98)); box-shadow: 0 32px 90px var(--shadow); }
.learning-context { margin-bottom: clamp(3rem, 7vw, 6rem); }
.learning-context > summary { min-height: 5rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem clamp(1.3rem, 3vw, 2rem); cursor: pointer; }
.learning-context > summary strong { display: block; margin-top: 0.25rem; color: var(--text); font-size: 1.1rem; }
.learning-context > summary::marker { color: var(--accent-strong); }
.learning-context[open] > summary { border-bottom: 1px solid var(--line); }
.learning-context > header,
.learning-workspace-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 2rem; padding: clamp(1.3rem, 3vw, 2rem); border-bottom: 1px solid var(--line); }
.learning-context > header p { max-width: 48rem; margin: 0; color: var(--muted); }
.learning-context h2,
.learning-workspace h2 { margin: 0.35rem 0 0; }
.learning-context output { max-width: 30rem; padding: 0.7rem 0.85rem; border: 1px solid var(--line); border-radius: 999px; color: var(--accent-strong); font-weight: 800; text-align: right; }
.learning-controls { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--line); }
.learning-field { min-width: 0; display: grid; gap: 0.55rem; margin: 0; padding: 1rem; border: 0; background: rgba(8, 13, 18, 0.97); }
.learning-field > span:first-child,
.learning-field legend { color: var(--subtle); font-size: 0.7rem; font-weight: 850; letter-spacing: 0.1em; text-transform: uppercase; }
.learning-field select,
.learning-field input[type="range"] { width: 100%; min-width: 0; }
.learning-field select { min-height: var(--tap-target); padding: 0.62rem 0.7rem; border: 1px solid var(--control-border); border-radius: 0.35rem; background: #071014; color: var(--text); font: inherit; }
.learning-focus { grid-column: span 2; }
.learning-range { min-width: 0; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 0.75rem; align-items: center; }
.learning-range output { color: var(--accent-strong); font-size: 0.8rem; font-weight: 800; white-space: nowrap; }
.segmented-control { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.35rem; }
.segmented-control label { position: relative; }
.segmented-control input { position: absolute; opacity: 0; pointer-events: none; }
.segmented-control span { min-height: var(--tap-target); display: grid; place-items: center; padding: 0.55rem; border: 1px solid var(--line); border-radius: 0.35rem; color: var(--muted); cursor: pointer; }
.segmented-control input:checked + span { border-color: var(--accent-strong); background: rgba(73, 188, 194, 0.13); color: var(--text); }
.segmented-control input:focus-visible + span { outline: 3px solid var(--accent); outline-offset: 2px; }
.focus-toggle { min-height: var(--tap-target); display: flex; gap: 0.55rem; align-items: center; cursor: pointer; }

.learning-paths { padding-bottom: clamp(3rem, 7vw, 6rem); }
.learning-path-list { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 0.75rem; }
.learning-path-button { min-width: 0; min-height: 10rem; display: flex; flex-direction: column; align-items: flex-start; gap: 0.65rem; padding: 1rem; border: 1px solid var(--line); border-radius: 0.6rem; background: rgba(9, 16, 21, 0.9); color: var(--text); text-align: left; cursor: pointer; }
.learning-path-button strong { font-size: 1.05rem; }
.learning-path-button span { color: var(--muted); line-height: 1.5; }
.learning-path-button[aria-pressed="true"] { border-color: var(--accent-strong); background: rgba(73, 188, 194, 0.12); box-shadow: inset 0 0 2rem rgba(73, 188, 194, 0.08); }

.learning-workspace { margin-bottom: 3rem; }
.learning-workspace-header > div > p { max-width: 44rem; margin: 0; color: var(--muted); }
.learning-no-progress { max-width: 24rem; margin: 0; padding: 0.9rem; border-left: 2px solid var(--accent); color: var(--muted); }
.learning-no-progress strong { color: var(--text); }
.learning-workspace-grid { display: grid; grid-template-columns: minmax(18rem, 0.64fr) minmax(0, 1.36fr); min-width: 0; }
.learning-graph { min-width: 0; padding: 1rem; border-right: 1px solid var(--line); background: rgba(5, 11, 15, 0.72); }
.learning-graph-list { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; }
.learning-graph-item { position: relative; min-width: 0; padding-bottom: 1.15rem; }
.learning-graph-item:not(:last-child)::after { position: absolute; top: 3.1rem; bottom: 0; left: 1.45rem; width: 1px; background: var(--line-strong); content: ""; }
.learning-concept-button { position: relative; z-index: 1; width: 100%; min-width: 0; display: grid; grid-template-columns: 2.8rem minmax(0, 1fr); gap: 0.75rem; align-items: center; padding: 0.65rem; border: 1px solid transparent; border-radius: 0.55rem; background: transparent; color: var(--text); text-align: left; cursor: pointer; }
.learning-concept-button b { width: 2.8rem; aspect-ratio: 1; display: grid; place-items: center; border: 1px solid var(--line-strong); border-radius: 50%; background: #071015; color: var(--accent-strong); }
.learning-concept-button span { min-width: 0; overflow-wrap: anywhere; font-weight: 800; }
.learning-concept-button[aria-current="step"] { border-color: var(--accent-strong); background: rgba(73, 188, 194, 0.12); }
.learning-concept-button[aria-current="step"] b { background: var(--accent-strong); color: #031013; }

.learning-lesson { min-width: 0; padding: clamp(1.25rem, 4vw, 3rem); }
.learning-lesson > header { padding-bottom: 1.5rem; border-bottom: 1px solid var(--line); }
.learning-lesson > section { min-width: 0; padding: 1.4rem 0; border-bottom: 1px solid var(--line); }
.learning-lesson h2 { font-size: clamp(2.3rem, 5vw, 4.5rem); }
.learning-lesson h3 { margin-bottom: 0.65rem; font-size: 1.35rem; }
.learning-lesson p { max-width: 60rem; color: var(--muted); line-height: 1.65; }
.learning-relationship { margin: 0; color: var(--accent-strong) !important; font-size: 1.15rem; font-weight: 750; }
.learning-audio-actions { display: flex; flex-wrap: wrap; gap: 0.65rem; }
.learning-tuner-action { display: flex; flex-wrap: wrap; gap: 0.75rem 1rem; align-items: center; margin-bottom: 1rem; padding: 1rem; border: 1px solid var(--accent-strong); border-radius: 0.55rem; background: rgba(73, 188, 194, 0.09); }
.learning-tuner-action[hidden] { display: none; }
.learning-tuner-action p { flex: 1 1 16rem; margin: 0; font-size: 0.9rem; }
.learning-status { min-height: 1.5rem; margin: 0.7rem 0 0 !important; color: var(--accent-strong) !important; }
.learning-diagram { min-width: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); gap: 0.6rem; margin: 0; padding: 0; list-style: none; }
.learning-diagram li { min-width: 0; padding: 0.85rem; border: 1px solid var(--line); border-radius: 0.45rem; background: rgba(255, 255, 255, 0.035); color: var(--text); overflow-wrap: anywhere; }
.learning-deeper { margin-top: 1.4rem; padding: 1rem; border: 1px solid var(--line); border-radius: 0.55rem; }
.learning-deeper summary { min-height: var(--tap-target); display: flex; align-items: center; color: var(--accent-strong); font-weight: 850; cursor: pointer; }
.learning-deeper p { margin: 0.8rem 0 0; }
.learning-step-nav { display: flex; justify-content: space-between; gap: 0.75rem; margin-top: 1.5rem; }
.learning-step-nav [hidden] { display: none; }

@media (max-width: 1100px) {
  .learning-start { grid-template-columns: minmax(0, 1fr); }
  .learning-start > .button { justify-self: start; }
  .learning-controls { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .learning-path-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .learning-workspace-grid { grid-template-columns: minmax(15rem, 0.48fr) minmax(0, 1fr); }
}

@media (max-width: 760px) {
  .learning-hero { padding-top: 3rem; }
  .learning-context > summary,
  .learning-context > header,
  .learning-workspace-header { align-items: stretch; flex-direction: column; }
  .learning-context output { max-width: none; text-align: left; }
  .learning-workspace-grid { grid-template-columns: minmax(0, 1fr); }
  .learning-graph { border-right: 0; border-bottom: 1px solid var(--line); }
}

@media (max-width: 560px) {
  .learning-main > section,
  .learning-main > aside,
  .learning-main > details { width: min(100% - 1rem, var(--max-width)); }
  .learning-controls,
  .learning-path-list,
  .learning-start .segmented-control { grid-template-columns: minmax(0, 1fr); }
  .learning-focus { grid-column: auto; }
  .learning-path-button { min-height: auto; }
  .learning-step-nav { align-items: stretch; flex-direction: column; }
  .learning-step-nav .button,
  .learning-audio-actions .button,
  .learning-tuner-action .button { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .learning-path-button,
  .learning-concept-button { transition: none; }
}

.learning-play-references {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 15rem));
  justify-content: start;
  align-items: start;
  margin-bottom: 0.85rem;
}
.learning-play-references .play-reference {
  width: 100%;
  min-width: 0;
  max-width: 15rem;
}
.learning-play-references[hidden] { display: none; }

@media (max-width: 420px) {
  .learning-play-references { grid-template-columns: minmax(0, min(100%, 15rem)); }
}