.wkc {
  --wkc-border: color-mix(in srgb, var(--color-dark) 12%, transparent);
  color: var(--color-text);
}

.wkc .container { max-width: 1200px; }
.wkc a:focus-visible,
.wkc button:focus-visible,
.wkc summary:focus-visible {
  outline: 3px solid var(--color-logo);
  outline-offset: 3px;
}
.wkc .wn-crumbs { margin-bottom: var(--space-md); }
.wkc-hero { padding: var(--space-md) 0 var(--space-lg); background: var(--color-cream); }
.wkc-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(400px, 0.96fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 4.5rem);
}
.wkc-hero-copy { min-width: 0; }
.wkc-hero-copy h1 {
  max-width: 14ch;
  margin: 1.25rem 0;
  font-size: clamp(2.5rem, 5vw, 4.25rem);
  font-weight: 500;
  line-height: 1.08;
}
.wkc-hero-copy h1 em { display: block; margin-top: 0.1em; font-weight: 400; }
.wkc-lead { max-width: 59ch; font-size: 1.13rem; line-height: 1.65; }
.wkc-sublead { margin-top: 0.8rem; color: var(--color-muted); }
.wkc-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0.9rem 1.25rem; margin-top: var(--space-md); }
.wkc-actions .btn { display: inline-flex; justify-content: center; align-items: center; }
.wkc-price-note { margin-top: 0.8rem; font-size: 0.9rem; color: var(--color-muted); }
.wkc-free-note { margin-top: 1.25rem; padding-top: 1rem; border-top: 1px solid var(--wkc-border); font-size: 0.9rem; }
.wkc-free-note a, .wkc-free-reminder a { color: var(--color-logo); font-weight: 600; text-decoration: underline; text-underline-offset: 0.16em; }

.wkc-preview {
  min-width: 0;
  padding: clamp(1rem, 2vw, 1.5rem);
  border: 1px solid var(--wkc-border);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: 0 2px 4px color-mix(in srgb, var(--color-dark) 8%, transparent);
}
.wkc-preview-heading { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; font-size: 0.9rem; font-weight: 600; }
.wkc-score { display: grid; place-items: center; height: clamp(190px, 23vw, 260px); margin-top: 1rem; padding: 0.5rem; overflow: hidden; border: 1px solid var(--color-sand); border-radius: var(--radius-md); background: var(--color-cream); }
.wkc-score img { width: 100%; height: 100%; object-fit: contain; }
.wkc-caption { margin-top: 0.45rem; color: var(--color-muted); font-size: 0.78rem; }
.wkc-tool-label { margin: 1.25rem 0 0.65rem; font-size: 0.85rem; }
.wkc-tool-tabs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.25rem; padding: 0.25rem; border-radius: var(--radius-md); background: var(--color-sand); }
.wkc-tool-tabs button { min-height: 42px; border: 0; border-radius: var(--radius-sm); background: transparent; color: var(--color-text); font: inherit; font-size: 0.83rem; font-weight: 600; cursor: pointer; }
.wkc-tool-tabs button[aria-selected="true"] { background: var(--color-cream); box-shadow: 0 1px 3px color-mix(in srgb, var(--color-dark) 12%, transparent); }
.wkc-tool-panel { min-height: 155px; padding: 1.1rem 0.15rem 0.35rem; }
.wkc-tool-panel .label { margin-bottom: 0.35rem; font-size: 0.66rem; }
.wkc-tool-panel h2 { margin-bottom: 0.5rem; font-size: clamp(1.45rem, 2.3vw, 1.9rem); }
.wkc-tool-panel > p:last-child { font-size: 0.92rem; line-height: 1.6; }
.wkc-disclaimer { padding-top: 0.75rem; border-top: 1px solid var(--wkc-border); color: var(--color-muted); font-size: 0.76rem; line-height: 1.5; }

.wkc-section { padding: clamp(3.5rem, 7vw, 6rem) 0; scroll-margin-top: 6rem; }
.wkc-sand { background: var(--color-sand); }
.wkc-section-intro { max-width: 760px; margin-bottom: var(--space-md); }
.wkc-section-intro h2, .wkc-video-layout h2, .wkc-purchase-grid h2, .wkc-faq-wrap h2 {
  margin: 0.5rem 0 0.85rem;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 500;
}
.wkc-section-intro > p, .wkc-purchase-grid > div > p, .wkc-video-layout > div:first-child > p { max-width: 68ch; color: var(--color-muted); line-height: 1.75; }
.wkc-compare { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
.wkc-compare-card { display: flex; flex-direction: column; align-items: flex-start; min-width: 0; padding: clamp(1.35rem, 3vw, 2rem); border: 1px solid var(--wkc-border); border-radius: var(--radius-lg); background: var(--color-cream); }
.wkc-compare-card--course { border-color: color-mix(in srgb, var(--color-gold) 70%, white); }
.wkc-compare-card h3 { margin: 1rem 0 0.8rem; font-size: 1.75rem; font-weight: 500; }
.wkc-compare-card ul { display: grid; gap: 0.75rem; width: 100%; margin-bottom: 1.25rem; }
.wkc-compare-card li { position: relative; padding-left: 1.35rem; line-height: 1.55; }
.wkc-compare-card li::before { position: absolute; left: 0; content: "✓"; color: var(--color-logo); font-weight: 700; }
.wkc-compare-card .wn-link { margin-top: auto; }
.wkc-compare-note { margin-top: 1rem; color: var(--color-muted); font-size: 0.88rem; line-height: 1.6; }

.wkc-feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.wkc-feature { min-width: 0; padding: 1.5rem; border: 1px solid var(--wkc-border); border-radius: var(--radius-lg); background: #fff; }
.wkc-feature-number { display: inline-grid; width: 2rem; height: 2rem; place-items: center; border-radius: 50%; background: var(--color-sand); color: var(--color-logo); font-size: 0.75rem; font-weight: 700; }
.wkc-feature h3 { margin: 1rem 0 0.55rem; font-size: 1.55rem; font-weight: 500; }
.wkc-feature p { color: var(--color-muted); font-size: 0.92rem; line-height: 1.65; }
.wkc-feature--assistant { grid-column: span 1; }
.wkc-key-choice { display: grid; grid-template-columns: minmax(240px, 0.8fr) minmax(0, 1.2fr); align-items: center; gap: 1.5rem; margin-top: 1.25rem; padding: clamp(1.4rem, 3vw, 2rem); border: 1px solid var(--wkc-border); border-radius: var(--radius-lg); background: var(--color-cream); }
.wkc-key-choice h3 { margin: 0.45rem 0; font-size: 1.6rem; font-weight: 500; }
.wkc-key-choice p { color: var(--color-muted); font-size: 0.9rem; line-height: 1.65; }
.wkc-key-choice .wn-keys { gap: 0.45rem; }
.wkc-key-choice .wn-keys li { min-width: 48px; text-align: center; }

.wkc-song-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }
.wkc-song-card { min-width: 0; overflow: hidden; border: 1px solid var(--wkc-border); border-radius: var(--radius-lg); background: var(--color-cream); }
.wkc-song-card figure { display: grid; height: 165px; place-items: center; overflow: hidden; padding: 0.65rem; background: #fff; }
.wkc-song-card img { width: 100%; height: 100%; object-fit: contain; object-position: top center; }
.wkc-song-card > div { position: relative; min-height: 115px; padding: 1rem; }
.wkc-song-number { color: var(--color-gold); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.1em; }
.wkc-song-card h3 { margin: 0.3rem 0 0.45rem; font-size: 1.27rem; font-weight: 500; line-height: 1.2; }
.wkc-song-card p { color: var(--color-muted); font-size: 0.8rem; line-height: 1.5; }
.wkc-free-reminder { margin-top: 1.2rem; color: var(--color-muted); font-size: 0.9rem; }

.wkc-video-layout { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(360px, 1.2fr); align-items: center; gap: clamp(2rem, 5vw, 4rem); }
.wkc-video-placeholder { display: flex; min-height: 300px; flex-direction: column; align-items: center; justify-content: center; gap: 0.7rem; padding: 2rem; border: 1px dashed var(--color-muted); border-radius: var(--radius-lg); background: var(--color-sand); text-align: center; }
.wkc-video-mark { display: grid; width: 4rem; height: 4rem; place-items: center; border-radius: 50%; background: var(--color-cream); color: var(--color-logo); }
.wkc-video-placeholder strong { font-family: var(--font-display); font-size: 1.65rem; font-weight: 500; }
.wkc-video-placeholder > span:last-child { color: var(--color-muted); font-size: 0.9rem; }

.wkc-purchase-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(290px, 410px); align-items: center; gap: clamp(2rem, 5vw, 4rem); }
.wkc-price-card { padding: clamp(1.5rem, 4vw, 2.25rem); border: 1px solid color-mix(in srgb, var(--color-gold) 65%, white); border-radius: var(--radius-lg); background: var(--color-cream); box-shadow: 0 3px 12px color-mix(in srgb, var(--color-dark) 6%, transparent); }
.wkc-price { display: flex; align-items: baseline; gap: 0.55rem; margin-top: 1rem; }
.wkc-price strong { font-family: var(--font-display); font-size: 3.5rem; font-weight: 500; line-height: 1; }
.wkc-price span { color: var(--color-muted); }
.wkc-access { margin-top: 0.55rem; font-weight: 600; }
.wkc-price-card .btn { width: 100%; margin-top: 1.4rem; text-align: center; }
.wkc-price-caption { margin-top: 0.8rem; color: var(--color-muted); font-size: 0.8rem; line-height: 1.5; }
.wkc-faq-wrap { max-width: 820px; }
.wkc-faq-list { border-top: 1px solid var(--wkc-border); }
.wkc-faq { padding: 1rem 0; border-bottom: 1px solid var(--wkc-border); }
.wkc-faq summary { position: relative; padding-right: 2rem; font-weight: 600; cursor: pointer; list-style: none; }
.wkc-faq summary::-webkit-details-marker { display: none; }
.wkc-faq summary::after { position: absolute; right: 0; content: "+"; color: var(--color-logo); font-size: 1.3rem; line-height: 1; }
.wkc-faq[open] summary::after { content: "−"; }
.wkc-faq > p { max-width: 68ch; padding: 0.75rem 2rem 0 0; color: var(--color-muted); font-size: 0.94rem; line-height: 1.7; }

.wkc-bottom-cta { padding: clamp(3.5rem, 7vw, 6rem) 0; background: var(--color-dark); color: var(--color-cream); text-align: center; }
.wkc-bottom-cta .label { color: var(--color-gold-light); }
.wkc-bottom-cta h2 { margin: 0.5rem 0; color: var(--color-cream); font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 500; }
.wkc-bottom-cta > .container > p { color: color-mix(in srgb, var(--color-cream) 76%, transparent); }
.wkc-actions--center { justify-content: center; }
.wkc-bottom-link { color: var(--color-cream); text-decoration: underline; text-underline-offset: 0.2em; }

@media (max-width: 960px) {
  .wkc-hero-grid { grid-template-columns: minmax(0, 1fr) minmax(340px, 0.95fr); gap: 1.5rem; }
  .wkc-song-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .wkc .container { padding-right: 1.25rem; padding-left: 1.25rem; }
  .wkc-hero-grid, .wkc-compare, .wkc-video-layout, .wkc-purchase-grid, .wkc-key-choice { grid-template-columns: minmax(0, 1fr); }
  .wkc-hero-grid { gap: 2rem; }
  .wkc-hero-copy h1 { max-width: 15ch; font-size: clamp(2.35rem, 9vw, 3.3rem); }
  .wkc-hero { padding-top: 1.4rem; }
  .wkc-preview { padding: 1rem; }
  .wkc-tool-tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .wkc-tool-panel { min-height: 0; }
  .wkc-feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .wkc-feature--assistant { grid-column: auto; }
  .wkc-song-grid { gap: 0.75rem; }
  .wkc-song-card figure { height: 145px; }
  .wkc-song-card > div { min-height: 125px; padding: 0.85rem; }
  .wkc-song-card h3 { font-size: 1.13rem; }
  .wkc-video-placeholder { min-height: 230px; }
  .wkc-purchase-grid { align-items: stretch; }
  .wkc-actions .btn { width: 100%; }
}
@media (max-width: 430px) {
  .wkc-feature-grid { grid-template-columns: minmax(0, 1fr); }
  .wkc-song-card figure { height: 120px; padding: 0.4rem; }
  .wkc-song-card > div { min-height: 145px; }
  .wkc-song-card h3 { font-size: 1.05rem; }
  .wkc-key-choice .wn-keys { gap: 0.35rem; }
  .wkc-key-choice .wn-keys li { min-width: 44px; padding-right: 0.5rem; padding-left: 0.5rem; }
}
@media (prefers-reduced-motion: reduce) {
  .wkc *, .wkc *::before, .wkc *::after { scroll-behavior: auto; }
}