/* 基础重置 */
    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      padding: 0;
      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
      line-height: 1.6;
      color: #333;
      background-color: #fff;
      transition: all 0.3s ease;
    }

    /* 无障碍触发按钮 */
    #accessibility-trigger {
            cursor: pointer;
    }

    /* 无障碍工具栏 */
    #accessibility-toolbar {
      display: flex;
      position: fixed;
      top: 0;
      left: 0;
      width: 100vw;
      max-height: 164px;
      background: #646464;
      z-index: 10000;
      padding: 28px 0;
      transition: all 0.3s ease;
      transform: translateY(-100%);
      opacity: 0;
      visibility: hidden;
      /* 确保工具栏不受页面缩放影响 */
      transform-origin: top center;
    }

    #accessibility-toolbar.show {
      transform: translateY(0);
      opacity: 1;
      visibility: visible;
    }

    .accessibility-toolbar-list {
      margin: auto;
      display: flex;
      flex-direction: row;
      gap: 6px;
    }

    .accessibility-toolbar-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      cursor: pointer;

    }

    .accessibility-toolbar-item .title {
      color: #ffffff;
      font-size: 16px;
      margin-bottom: 8px;
    }

    .accessibility-toolbar-item .icon {
      display: flex;
      align-items: center;
      justify-content: center;
      background-color: #333333;
      height: 72px;
      width: 72px;
      border-radius: 8px;
    }

    .accessibility-toolbar-item .icon img {
      height: 36px;
      width: 36px;
    }

    /* 选中状态样式 */
    .accessibility-toolbar-item.active .icon {
      background-color: red !important;
    }

    /* 阅读辅助线样式 */
    .reading-guide-line {
      position: fixed;
      pointer-events: none;
      z-index: 9999;
      display: none;
    }

    .reading-guide-line.horizontal {
      width: 100%;
      height: 2px;
      background-color: #ff0000 !important;
      left: 0;
    }

    .reading-guide-line.vertical {
      width: 2px;
      height: 100%;
      background-color: #ff0000 !important;
      top: 0;
    }

    /* 当辅助线激活时显示 */
    .reading-guide-line.active {
      display: block !important;
    }

    /* 大字幕样式 */
    .large-tooltip-display {
      position: fixed;
      bottom: 20px;
      bottom: 20px;
      left: 50%;
      transform: translateX(-50%);
      background: rgba(0, 0, 0, 0.9);
      color: white;
      padding: 15px 25px;
      border-radius: 8px;
      font-size: 24px;
      font-weight: bold;
      z-index: 10001;
      display: none;
      max-width: 80%;
      text-align: center;
      /* 确保大字幕不受页面缩放影响 */
      transform-origin: center bottom;
    }

    /* 高对比度模式 */
    .container.high-contrast,
    body.high-contrast {
      background: #000 !important;
      color: #fff !important;
    }

    /*   */
    .container.high-contrast *:not(.accessibility-toolbar):not(.accessibility-toolbar *),
    body .container.high-contrast *:not(.accessibility-toolbar):not(.accessibility-toolbar *){
      background: #000 !important;
      color: #fff !important;
      border-color: #fff !important;
    }

    /* 保持工具栏原有样式不变 */
    .container.high-contrast .accessibility-toolbar,
    .container.high-contrast .accessibility-toolbar * {
      background: initial !important;
      color: initial !important;
    }
    

    .container.high-contrast #accessibility-trigger {
      background: #007bff !important;
      color: white !important;
    }

    /* 纯文本模式 */
    .container.text-only {
      background: #fff !important;
      font-family: serif !important;
      font-size: 16px !important;
      line-height: 1.6 !important;
      color: #000 !important;
    }
    .container.text-only *:not(.accessibility-toolbar):not(.accessibility-toolbar *) {
      background: transparent !important;
      border: none !important;
      border-radius: 0 !important;
      box-shadow: none !important;
      text-shadow: none !important;
      text-align: left !important;
      font-family: inherit !important;
      font-size: inherit !important;
      font-weight: normal !important;
      font-style: normal !important;
      color: inherit !important;
      margin: 0.5em 0.5em !important;
      padding: 0 !important;
      float: none !important;
      position: static !important;
      top: auto !important;
      left: auto !important;
      right: auto !important;
      bottom: auto !important;
      width: auto !important;
      height: auto !important;
      max-width: none !important;
      max-height: none !important;
      min-width: 0 !important;
      min-height: 0 !important;
      transform: none !important;
      transition: none !important;
      animation: none !important;
      opacity: 1 !important;
      visibility: visible !important;
      z-index: auto !important;
      overflow: visible !important;
      clip-path: none !important;
      filter: none !important;
      backdrop-filter: none !important;
    }

    /* 隐藏媒体和装饰性元素 */
    .container.text-only img,
    .container.text-only video,
    .container.text-only canvas,
    .container.text-only svg,
    .container.text-only iframe,
    .container.text-only object,
    .container.text-only embed,
    .container.text-only audio {
      display: none !important;
    }

    /* 保持基本的文本结构 */
    .container.text-only h1,
    .container.text-only h2,
    .container.text-only h3,
    .container.text-only h4,
    .container.text-only h5,
    .container.text-only h6 {
      font-weight: bold !important;
      font-size: 1.2em !important;
      margin: 1em 0 0.5em 0 !important;
      display: block !important;
    }

    .container.text-only h1 { font-size: 1.8em !important; }
    .container.text-only h2 { font-size: 1.6em !important; }
    .container.text-only h3 { font-size: 1.4em !important; }

    .container.text-only p {
      display: block !important;
      margin: 0.5em 0 !important;
    }

    .container.text-only ul,
    .container.text-only ol {
      display: block !important;
      margin: 0.5em 0 !important;
      padding-left: 2em !important;
    }

    .container.text-only li {
      display: list-item !important;
      margin: 0.2em 0 !important;
    }

    .container.text-only ul li {
      list-style-type: disc !important;
    }

    .container.text-only ol li {
      list-style-type: decimal !important;
    }

    .container.text-only a {
      text-decoration: underline !important;
      color: #0000EE !important;
    }

    .container.text-only strong,
    .container.text-only b {
      font-weight: bold !important;
    }

    .container.text-only em,
    .container.text-only i {
      font-style: italic !important;
    }

    .container.text-only blockquote {
      margin: 1em 2em !important;
      font-style: italic !important;
    }

    .container.text-only pre,
    .container.text-only code {
      font-family: monospace !important;
      background: #f5f5f5 !important;
      padding: 0.2em !important;
    }

    .container.text-only table {
      border-collapse: collapse !important;
      margin: 1em 0 !important;
    }

    .container.text-only td,
    .container.text-only th {
      border: 1px solid #000 !important;
      padding: 0.5em !important;
      text-align: left !important;
    }

    .container.text-only th {
      font-weight: bold !important;
    }

    /* 保持工具栏原有样式不变 */
    .container.text-only .accessibility-toolbar,
    .container.text-only .accessibility-toolbar * {
      all: revert !important;
    }

    .container.text-only #accessibility-trigger {
     display: none !important;
    }

    /* 大鼠标样式 */
    .container.large-cursor,
    .container.large-cursor a,
    .container.large-cursor a:hover,
    .container.large-cursor img,
    .container.large-cursor img:hover,
    .container.large-cursor input,
    .container.large-cursor button,
    .container.large-cursor span,
    .container.large-cursor li,
    .container.large-cursor i,
    .container.large-cursor div{
      /* cursor: url('./svg/cursor-svgrepo-com.svg'), auto !important; */
      cursor: url("data:image/svg+xml,%3Csvg width='64' height='64' viewBox='0 0 24 24' fill='none' xmlns='http://www.w3.org/2000/svg' stroke='%2303fcec'%3E%3Cpath fill-rule='evenodd' clip-rule='evenodd' d='M1.5 4.075C.897 2.467 2.467.897 4.075 1.5l17.14 6.428c1.907.715 1.65 3.488-.354 3.842l-7.727 1.364-1.364 7.727c-.354 2.005-3.127 2.26-3.842.354L1.5 4.075zm1.873-.702L9.8 20.513l1.364-7.727a2 2 0 0 1 1.622-1.622L20.513 9.8 3.373 3.373z' fill='%237300ff'/%3E%3C/svg%3E"), auto !important;
    }

    /* 音量和语速滑块样式 */
    .volume-control,
    .rate-control {
      display: none;
      position: absolute;
      top: -30px;
      left: 50%;
      transform: translateX(-50%);
      background: rgba(0, 0, 0, 0.9);
      padding: 5px 5px 10px 5px;
      border-radius: 8px;
      min-width: 150px;
    }

    .volume-control.show,
    .rate-control.show {
      display: block;
    }

    .slider {
      width: 100%;
      height: 6px;
      border-radius: 3px;
      background: #333;
      outline: none;
      appearance: none;
      -webkit-appearance: none;
    }

    .slider::-webkit-slider-thumb {
      appearance: none;
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: #fff;
      cursor: pointer;
    }

    .slider::-moz-range-thumb {
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: #fff;
      cursor: pointer;
      border: none;
    }

    .slider-label {
      color: white;
      font-size: 12px;
      text-align: center;
      margin-bottom: 2px;
    }

    .reading-guide-line {
      position: fixed;
      pointer-events: none;
      z-index: 9999;
      display: none;
    }

    /* 触摸设备适配：隐藏不适用的按钮 */
    .container.touch-device #large-cursor {
      display: none !important;
    }

    /* 响应式适配 —— 平板与小屏桌面 */
    @media (max-width: 1024px) {
      .accessibility-toolbar-item .title {
        font-size: 14px;
      }
      .accessibility-toolbar-item .icon {
        height: 64px;
        width: 64px;
      }
      .accessibility-toolbar-item .icon img {
        height: 30px;
        width: 30px;
      }
    }

    /* 响应式适配 —— 手机端（底部工具栏 + 横向滚动） */
    @media (max-width: 768px) {
      /* 触发按钮悬浮到右下角，便于触达 */
      #accessibility-trigger {
        position: fixed;
        bottom: calc(16px + env(safe-area-inset-bottom));
        right: 16px;
        z-index: 10002;
        box-shadow: 0 4px 10px rgba(0,0,0,0.2);
      }

      #accessibility-toolbar {
        top: auto;
        bottom: 0;
        left: 0;
        right: 0;
        max-height: none;
        padding: 12px 8px calc(12px + env(safe-area-inset-bottom));
        transform: translateY(100%);
        transform-origin: bottom center;
      }

      #accessibility-toolbar.show {
        transform: translateY(0);
      }

      .accessibility-toolbar-list {
        width: 100%;
        gap: 8px;
        padding: 0 8px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
      }

      .accessibility-toolbar-item .title {
        font-size: 13px;
      }
      .accessibility-toolbar-item .icon {
        height: 56px;
        width: 56px;
      }
      .accessibility-toolbar-item .icon img {
        height: 28px;
        width: 28px;
      }

      /* 滑块弹层在底部工具栏上方展示，避免被遮挡 */
      .volume-control,
      .rate-control {
        top: auto;
        bottom: 72px; /* 大致高于图标 */
      }

      /* 大字幕贴近底部安全区域 */
      .large-tooltip-display {
        bottom: calc(20px + env(safe-area-inset-bottom));
        font-size: 22px;
        padding: 12px 18px;
        max-width: 92vw;
      }

      /* 阅读辅助线在小屏上更明显 */
      .reading-guide-line.horizontal {
        height: 3px;
      }
      .reading-guide-line.vertical {
        width: 3px;
      }
    }
    .modalClick{
      padding: 8px 12px;
      border-radius: 6px;
      background: #007bff;
      color: #fff;
      border: 0;
      cursor: pointer;
    }
    .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            z-index: 1000;
        }

    .modal .modal-content {
            background-color: #fff;
            margin: 15% auto;
            padding: 20px;
            width: 80%;
            max-width: 500px;
            position: relative;
            border-radius: 5px;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
        }

    .modal .close {
            position: absolute;
            right: 10px;
            top: 5px;
            font-size: 24px;
            cursor: pointer;
        }