@media (max-width: 760px) {
  html:has(.resonance-builder-dialog[open]),
  body:has(.resonance-builder-dialog[open]) {
    width: 100%;
    max-width: 100%;
    overflow: hidden;
  }

  .resonance-builder-dialog,
  body.resonance-builder-standalone .resonance-builder-dialog {
    position: fixed;
    inset: 0;
    box-sizing: border-box;
    width: 100dvw !important;
    min-width: 100dvw;
    max-width: none !important;
    height: 100dvh;
    max-height: none;
    margin: 0 !important;
    padding: 0;
    border: 0;
    border-radius: 0;
  }

  .resonance-builder-shell,
  body.resonance-builder-standalone .resonance-builder-shell,
  .rb-layout,
  .rb-layout > main {
    box-sizing: border-box;
    width: 100%;
    max-width: 100%;
  }

  .resonance-builder-shell {
    height: 100dvh;
    min-height: 100dvh;
  }

  .rb-layout > main {
    scrollbar-gutter: auto;
  }

  /* 话题输入区域：确保添加按钮不超出页面 */
  .rb-topic-block {
    width: 100% !important;
    min-width: 0 !important;
    max-width: 100% !important;
    overflow: hidden !important;
    box-sizing: border-box !important;
  }
  .rb-topic-add {
    display: grid !important;
    width: 100% !important;
    min-width: 0 !important;
    max-width: 100% !important;
    grid-template-columns: minmax(0, 1fr) minmax(0, auto) !important;
    gap: 8px !important;
    overflow: hidden !important;
    box-sizing: border-box !important;
  }
  .rb-topic-add > select {
    grid-column: 1 / -1 !important;
    width: 100% !important;
    min-width: 0 !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }
  .rb-topic-add > input {
    grid-column: 1 !important;
    width: 100% !important;
    min-width: 0 !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }
  .rb-topic-add > button {
    grid-column: 2 !important;
    width: auto !important;
    min-width: 48px !important;
    max-width: 72px !important;
    padding: 0 8px !important;
    font-size: 13px !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    box-sizing: border-box !important;
  }
}