.scale-help {
  --scale-help-background: var(--bg);
  --scale-help-surface: var(--card-strong);
  --scale-help-text: var(--text);
  --scale-help-muted: var(--muted);
  --scale-help-border: var(--line);
  --scale-help-accent: var(--accent-blue);
  --scale-help-accent-strong: color-mix(in srgb, var(--accent-blue) 85%, black);
  --scale-help-on-accent: #fff;
  --scale-help-focus: color-mix(in srgb, var(--accent-blue) 45%, transparent);
  --scale-help-soft-accent: color-mix(in srgb, var(--accent-blue) 7%, transparent);
  --scale-help-shadow: color-mix(in srgb, var(--text) 7%, transparent);
  --scale-help-body-size: clamp(12.5px, calc(10.4px + 0.55vw), 13px);
  --scale-help-heading-size: clamp(13.5px, calc(11.8px + 0.45vw), 14px);
  --scale-help-micro-size: clamp(9.25px, calc(8.3px + 0.25vw), 9.75px);
  --scale-help-body-leading: 1.65;
  padding-block: 24px 72px;
  padding-inline: 16px;
  border-block-start: 1px solid var(--scale-help-border);
  background: var(--scale-help-background);
  color: var(--scale-help-text);
  font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", sans-serif;
  overflow-wrap: anywhere;
  word-break: normal;
  line-break: strict;
}

.scale-help__header {
  margin-block-end: 12px;
}

.scale-help__header h2 {
  margin: 0;
  color: var(--scale-help-text);
  font-family: inherit;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.5;
}

.scale-help__lead {
  margin-block: 6px 0;
  color: var(--scale-help-muted);
  font-size: var(--scale-help-body-size);
  line-height: var(--scale-help-body-leading);
  letter-spacing: -0.01em;
}

.scale-help__items {
  display: grid;
  gap: 8px;
}

.scale-help__item {
  overflow: clip;
  border: 1px solid var(--scale-help-border);
  border-radius: 8px;
  background: var(--scale-help-surface);
  box-shadow: 0 1px 4px var(--scale-help-shadow);
}

.scale-help__summary {
  position: relative;
  display: grid;
  align-items: center;
  min-block-size: 44px;
  padding-block: 11px;
  padding-inline: 12px 40px;
  color: var(--scale-help-text);
  cursor: pointer;
  list-style: none;
}

.scale-help__summary::-webkit-details-marker {
  display: none;
}

.scale-help__summary::marker {
  content: "";
}

.scale-help__summary h3 {
  margin: 0;
  color: inherit;
  font-size: var(--scale-help-heading-size);
  font-weight: 800;
  line-height: 1.5;
}

.scale-help__summary::after {
  content: "";
  position: absolute;
  inset-block-start: 50%;
  inset-inline-end: 16px;
  inline-size: 7px;
  block-size: 7px;
  border-inline-end: 2px solid var(--scale-help-accent);
  border-block-end: 2px solid var(--scale-help-accent);
  transform: translateY(-65%) rotate(45deg);
  transform-origin: center;
  transition: transform 0.2s ease;
}

.scale-help__item[open] > .scale-help__summary {
  border-block-end: 1px solid var(--scale-help-border);
}

.scale-help__item[open] > .scale-help__summary::after {
  transform: translateY(-30%) rotate(-135deg);
}

.scale-help__summary:focus-visible,
.scale-help a:focus-visible {
  outline: 2px solid var(--scale-help-focus);
  outline-offset: 2px;
}

.scale-help__panel {
  padding-block: 13px;
  padding-inline: 12px;
  color: var(--scale-help-muted);
  font-size: var(--scale-help-body-size);
  line-height: var(--scale-help-body-leading);
}

.scale-help__panel p {
  margin: 0;
}

.scale-help__steps {
  display: grid;
  gap: 9px;
  margin-block: 0 13px;
  padding: 0;
  counter-reset: scale-help-step;
  list-style: none;
}

.scale-help__step {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 8px;
  align-items: start;
  counter-increment: scale-help-step;
}

.scale-help__step::before {
  content: counter(scale-help-step);
  display: grid;
  place-items: center;
  inline-size: 22px;
  block-size: 22px;
  border-radius: 50%;
  background: var(--scale-help-accent-strong);
  color: var(--scale-help-on-accent);
  font-family: Inter, "Helvetica Neue", Arial, sans-serif;
  font-size: var(--scale-help-body-size);
  font-weight: 800;
  line-height: 1;
}

.scale-help__step strong {
  display: block;
  margin-block-end: 2px;
  color: var(--scale-help-text);
  font-size: var(--scale-help-body-size);
  line-height: 1.4;
}

.scale-help__step span,
.scale-help__orientation-note,
.scale-help__utility-note {
  letter-spacing: -0.01em;
}

.scale-help__display-meta {
  display: grid;
  gap: 8px;
  margin-block-start: 10px;
  padding-block: 10px 8px;
  border-block: 1px solid var(--scale-help-border);
}

.scale-help__orientation-note {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 8px;
  align-items: center;
  margin: 0;
  color: var(--scale-help-muted);
  font-size: var(--scale-help-body-size);
  line-height: 1.45;
}

.scale-help__orientation-axis {
  display: grid;
  gap: 1px;
  padding-block: 4px;
  padding-inline: 5px;
  border-radius: 5px;
  background: var(--scale-help-soft-accent);
  color: var(--scale-help-accent);
  font-family: Inter, "Helvetica Neue", Arial, sans-serif;
  font-size: var(--scale-help-micro-size);
  font-weight: 800;
  line-height: 1.2;
  text-align: center;
  white-space: nowrap;
}

.scale-help__usage-feature {
  margin-block-start: 14px;
}

.scale-help__comparison {
  margin-block: 7px 0;
  margin-inline: 0;
}

.scale-help__comparison figcaption {
  margin-block: 0 6px;
  margin-inline: 0;
  color: var(--scale-help-text);
  font-size: var(--scale-help-body-size);
  font-weight: 800;
  line-height: 1.35;
}

.scale-help__mapping {
  display: grid;
  gap: 3px;
  inline-size: min(100%, 360px);
  margin-inline: auto;
  padding: 5px;
  border: 1px solid var(--scale-help-border);
  border-radius: 7px;
  background: var(--scale-help-surface);
}

.scale-help__mapping-row {
  display: grid;
  grid-template-columns: 35px minmax(0, 1fr);
  gap: 3px;
  align-items: center;
}

.scale-help__mapping-label {
  display: grid;
  place-items: center;
  min-block-size: 24px;
  border-radius: 5px;
  background: var(--scale-help-soft-accent);
  color: var(--scale-help-accent-strong);
  font-family: Inter, "Helvetica Neue", Arial, sans-serif;
  font-size: 8px;
  font-weight: 800;
  line-height: 1.1;
  text-align: center;
}

.scale-help__mapping-notes {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 2px;
  min-inline-size: 0;
}

.scale-help__mapping-note {
  display: grid;
  grid-template-rows: auto auto;
  place-items: center;
  min-inline-size: 0;
  min-block-size: 25px;
  padding: 1px;
  border: 1px solid rgba(0, 0, 0, 0.14);
  border-radius: 4px;
  color: #fff;
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.15);
}

.scale-help__mapping-note small {
  font-family: Inter, "Helvetica Neue", Arial, sans-serif;
  font-size: 6.5px;
  font-weight: 700;
  line-height: 1;
  opacity: 0.82;
}

.scale-help__mapping-note strong {
  font-family: Inter, "Helvetica Neue", Arial, sans-serif;
  font-size: 9px;
  font-weight: 800;
  line-height: 1;
}

.scale-help__mapping-note--a {
  background: #4a91b5;
}

.scale-help__mapping-note--c {
  background: #263343;
}

.scale-help__mapping-note--d {
  background: #cc4c50;
}

.scale-help__mapping-note--e {
  background: #329363;
}

.scale-help__mapping-note--g {
  background: #b66f19;
}

.scale-help__compact-note {
  margin-block: 9px 14px !important;
  color: var(--scale-help-muted);
  font-size: var(--scale-help-body-size);
  line-height: 1.55;
  letter-spacing: -0.01em;
}

.scale-help__utility-note {
  margin-block: 10px 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--scale-help-muted);
  line-height: 1.6;
}

.scale-help__utility-note strong {
  color: var(--scale-help-accent);
  font-weight: 800;
}

.scale-help__basic-intro {
  margin-block-end: 10px !important;
}

#scale-help-types-panel > p {
  margin-block: 0 11px;
  line-height: 1.6;
}

.scale-help__type-groups {
  display: grid;
  gap: 12px;
}

.scale-help__type-group {
  margin: 0;
}

.scale-help__type-group h4 {
  margin-block: 0 6px;
  margin-inline: 0;
  color: var(--scale-help-text);
  font-size: var(--scale-help-body-size);
  font-weight: 800;
  line-height: 1.4;
}

.scale-help__type-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 5px;
  margin: 0;
  padding: 0;
  overflow: visible;
  list-style: none;
}

.scale-help__type-item--name {
  display: grid;
  place-items: center;
  min-block-size: 40px;
  padding-block: 6px;
  padding-inline: 4px;
  border: 1px solid var(--scale-help-border);
  border-radius: 6px;
  background: var(--scale-help-surface);
  color: var(--scale-help-text);
  font-size: var(--scale-help-micro-size);
  font-weight: 700;
  line-height: 1.3;
  text-align: center;
  overflow-wrap: anywhere;
}

.scale-help__exact-example-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-block-start: 9px;
}

.scale-help__exact-example {
  min-inline-size: 0;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--scale-help-accent) 10%, var(--scale-help-border));
  border-radius: 8px;
  background: color-mix(in srgb, var(--scale-help-accent) 2.5%, var(--scale-help-surface));
}

.scale-help__exact-example-header {
  display: grid;
  gap: 2px;
  padding-block: 7px 5px;
  padding-inline: 7px;
}

.scale-help__exact-example-header h4 {
  margin: 0;
  color: var(--scale-help-text);
  font-size: clamp(11px, 2.75vw, 12.5px);
  font-weight: 800;
  line-height: 1.25;
}

.scale-help__exact-example-header span {
  color: var(--scale-help-muted);
  font-family: Inter, "Helvetica Neue", Arial, sans-serif;
  font-size: clamp(8px, 2.1vw, 9px);
  font-weight: 700;
  line-height: 1.2;
  white-space: nowrap;
}

.scale-help__cropped-board-card {
  margin-block: 0;
  margin-inline: 6px;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.scale-help__cropped-board-card .scale-board-card__body {
  padding: 0;
}

.scale-help__cropped-diagram {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto auto;
  column-gap: 6px;
  row-gap: 4px;
  min-inline-size: 0;
  inline-size: 100%;
}

.scale-help__cropped-diagram .scale-fretboard__degree {
  min-inline-size: 19px;
  block-size: 13px;
  padding-inline: 1px;
  border-radius: 3px;
  font-size: 8px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.22);
}

.scale-help__cropped-fretboard {
  grid-column: 1;
  grid-row: 1;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  grid-template-rows: repeat(6, 14px);
  inline-size: 100%;
  margin-inline: 0;
  border-radius: 4px;
}

.scale-help__cropped-fretboard::before {
  display: none;
}

.scale-help__cropped-fretboard .scale-fretboard__inlays {
  grid-template-columns: repeat(6, minmax(0, 1fr));
  grid-template-rows: repeat(6, 14px);
}

.scale-help__cropped-fretboard .scale-fretboard__inlay-dot {
  inline-size: 10px;
  block-size: 10px;
}

.scale-help__cropped-fretboard .scale-fretboard__cell {
  min-block-size: 14px;
}

.scale-help__cropped-fretboard .scale-fretboard__cell::after {
  inline-size: 1.8px;
}

.scale-help__cropped-fretboard .scale-fretboard__cell--fret-3::before {
  inset-inline-start: 0;
}

.scale-help__cropped-fretboard .scale-fretboard__cell--fret-8.scale-fretboard__cell--last::after {
  transform: translateX(0);
}

.scale-help__cropped-diagram .scale-fretboard__numbers {
  grid-column: 1;
  grid-row: 2;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  inline-size: 100%;
  margin-inline: 0;
  padding-block-start: 3px;
  font-size: 8px;
}

.scale-help__cropped-diagram .scale-fretboard__number {
  min-block-size: 10px;
  padding-inline-end: 4px;
}

.scale-help__exact-staff {
  display: grid;
  justify-items: center;
  align-items: center;
  min-block-size: 49px;
  padding-block: 2px 5px;
  padding-inline: 2px;
  overflow: hidden;
}

.scale-help__exact-staff svg {
  display: block;
  inline-size: min(104%, 188px);
  max-inline-size: 188px;
  block-size: auto;
}

.scale-help__related {
  display: grid;
  margin-block-start: 16px;
  border-block: 1px solid var(--scale-help-border);
}

.scale-help__related a {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  min-block-size: 44px;
  padding-inline: 4px 56px;
  border-block-end: 1px solid var(--scale-help-border);
  color: var(--scale-help-text);
  font-size: var(--scale-help-body-size);
  font-weight: 700;
  text-decoration: none;
}

.scale-help__related a:last-child {
  border-block-end: 0;
}

.scale-help__related a::after {
  content: "›";
  color: var(--scale-help-accent);
  font-size: 17px;
  line-height: 1;
}

.scale-help__copyright {
  margin-block-start: 16px;
  color: var(--scale-help-muted);
  font-size: var(--scale-help-micro-size);
  text-align: center;
  opacity: 0.82;
}

.scale-help__copyright a {
  color: inherit;
  text-decoration: none;
}

@media (min-width: 680px) {
  .scale-help__exact-example-grid {
    max-inline-size: 720px;
    gap: 12px;
    margin-inline: auto;
  }

  .scale-help__exact-example {
    max-inline-size: 350px;
  }

  .scale-help__cropped-diagram {
    row-gap: 5px;
  }

  .scale-help__cropped-diagram .scale-fretboard__degree {
    min-inline-size: 22px;
    block-size: 15px;
    font-size: 9px;
  }

  .scale-help__cropped-fretboard,
  .scale-help__cropped-fretboard .scale-fretboard__inlays {
    grid-template-rows: repeat(6, 17px);
  }

  .scale-help__cropped-fretboard .scale-fretboard__cell {
    min-block-size: 17px;
  }

  .scale-help__cropped-fretboard .scale-fretboard__inlay-dot {
    inline-size: 12px;
    block-size: 12px;
  }

  .scale-help__exact-staff {
    min-block-size: 76px;
    padding-inline: 4px;
  }

  .scale-help__exact-staff svg {
    inline-size: min(100%, 270px);
    max-inline-size: 270px;
  }
}

@media (max-width: 380px) {
  .scale-help__mapping-row {
    grid-template-columns: 36px minmax(0, 1fr);
  }

  .scale-help__mapping-note {
    min-block-size: 29px;
  }

  .scale-help__type-list {
    gap: 4px;
  }

  .scale-help__type-item--name {
    padding-inline: 3px;
  }

  .scale-help__exact-example-grid {
    gap: 7px;
  }

  .scale-help__exact-example-header {
    padding-inline: 6px;
  }

  .scale-help__cropped-board-card {
    margin-inline: 5px;
  }

  .scale-help__exact-staff svg {
    inline-size: min(100%, 160px);
    max-inline-size: 160px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .scale-help__summary::after {
    transition: none;
  }
}