@media (max-width: 900px) {
  body.rk-hangul-plugin-active.page-hangul:has(#builder-panel:not(.hidden)) .hangul-hero {
    display: none !important;
  }

  body.rk-hangul-plugin-active.page-hangul:has(#builder-panel:not(.hidden)) .voice-bottom {
    display: none !important;
  }

  body.rk-hangul-plugin-active.page-hangul:has(#builder-panel:not(.hidden)) .builder-jamo-picker {
    grid-template-columns: 1fr !important;
    gap: 0.35rem !important;
  }

  body.rk-hangul-plugin-active.page-hangul:has(#builder-panel:not(.hidden)) #builder-consonants {
    grid-template-columns: repeat(8, minmax(0, 1fr)) !important;
    gap: 0.18rem !important;
  }

  body.rk-hangul-plugin-active.page-hangul:has(#builder-panel:not(.hidden)) #builder-vowels {
    grid-template-columns: repeat(7, minmax(0, 1fr)) !important;
    gap: 0.18rem !important;
  }

  body.rk-hangul-plugin-active.page-hangul:has(#builder-panel:not(.hidden)) .builder-jamo-card {
    min-height: 0 !important;
    aspect-ratio: 1;
    padding: 0.08rem !important;
    touch-action: none;
    -webkit-user-select: none !important;
    user-select: none !important;
    -webkit-touch-callout: none !important;
  }

  body.rk-hangul-plugin-active.page-hangul:has(#builder-panel:not(.hidden)) .builder-jamo-char {
    font-size: clamp(1.25rem, 5vw, 1.5rem) !important;
    line-height: 1 !important;
    pointer-events: none !important;
    -webkit-user-select: none !important;
    user-select: none !important;
    -webkit-touch-callout: none !important;
  }

  body.rk-hangul-plugin-active.hangul-builder-active .syllable-builder,
  body.rk-hangul-plugin-active.hangul-builder-active .builder-jamo-picker,
  body.rk-hangul-plugin-active.hangul-builder-active .builder-jamo-grid {
    -webkit-user-select: none !important;
    user-select: none !important;
    -webkit-touch-callout: none !important;
  }

  body.rk-hangul-plugin-active.page-hangul:has(#builder-panel:not(.hidden)) .syllable-builder-row {
    display: grid !important;
    grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
    gap: 0.35rem !important;
  }

  body.rk-hangul-plugin-active.page-hangul:has(#builder-panel:not(.hidden)) .syllable-result-wrap {
    grid-column: 1 / -1 !important;
    flex-direction: column !important;
    align-items: stretch !important;
    border-top: 1px dashed var(--border);
    padding-top: 0.35rem !important;
  }

  body.rk-hangul-plugin-active.page-hangul:has(#builder-panel:not(.hidden)) .syllable-result-box {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: 100% !important;
    min-height: 4.25rem !important;
    border: 2px solid var(--navy-light) !important;
    border-radius: 8px !important;
    background: var(--surface) !important;
    overflow: hidden !important;
  }

  body.rk-hangul-plugin-active.page-hangul:has(#builder-panel:not(.hidden)) .syllable-result {
    font-size: clamp(2rem, 11vw, 2.85rem) !important;
    line-height: 1 !important;
  }

  body.rk-hangul-plugin-active.page-hangul:has(#builder-panel:not(.hidden)) .syllable-compose-actions {
    display: flex !important;
    justify-content: center !important;
    gap: 0.35rem !important;
  }

  body.rk-hangul-plugin-active.page-hangul:has(#builder-panel:not(.hidden)) .syllable-play-btn,
  body.rk-hangul-plugin-active.page-hangul:has(#builder-panel:not(.hidden)) .syllable-clear-btn {
    min-height: 30px !important;
    padding: 0.22rem 0.5rem !important;
    font-size: 0.68rem !important;
    width: auto !important;
  }

  body.rk-hangul-plugin-active.page-hangul:has(#builder-panel:not(.hidden)) .syllable-play-btn span {
    display: none !important;
  }
}