:root {
  --babel-page-tabs-height: 38px;
  --babel-page-tabs-bg: rgba(255, 253, 247, .92);
  --babel-page-tabs-line: rgba(32, 33, 31, .14);
  --babel-page-tabs-ink: #20211f;
  --babel-page-tabs-muted: #6d716c;
  --babel-page-tabs-active: #0f8c72;
  --babel-page-tabs-soft: rgba(15, 140, 114, .10);
  --babel-page-tabs-shadow: 0 10px 30px rgba(40, 48, 36, .10);
}

.babel-global-help-shell {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 2147481900;
  display: inline-flex;
  align-items: center;
  transition: right .16s ease;
}

.babel-global-help {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px 5px 6px;
  border: 1px solid rgba(255, 255, 255, .46);
  border-radius: 999px;
  color: #fff;
  background: rgba(12, 91, 75, .94);
  box-shadow: 0 12px 30px rgba(12, 34, 27, .24);
  text-decoration: none;
  font-family: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 13px;
  font-weight: 800;
  line-height: 1;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform .16s ease, box-shadow .16s ease, background .16s ease;
}

.babel-global-help:hover,
.babel-global-help:focus-visible {
  color: #fff;
  background: #0f806b;
  box-shadow: 0 15px 34px rgba(12, 34, 27, .32);
  transform: translateY(-2px);
  outline: none;
}

.babel-global-help[data-help-kind="student"] { background: rgba(42, 91, 132, .95); }
.babel-global-help[data-help-kind="guest"],
.babel-global-help[data-help-kind="member"] { background: rgba(61, 67, 64, .94); }

.babel-global-help-mark {
  width: 28px;
  height: 28px;
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 50%;
  background: rgba(255, 255, 255, .17);
  font-family: "Songti SC", "STSong", serif;
  font-size: 18px;
  font-weight: 900;
}

.babel-global-help-label { white-space: nowrap; }

.babel-global-help-close,
.babel-global-help-restore {
  border: 1px solid rgba(255, 255, 255, .58);
  color: #fff;
  background: rgba(42, 49, 46, .96);
  font-family: "Avenir Next", "PingFang SC", sans-serif;
  font-weight: 900;
  line-height: 1;
  cursor: pointer;
}

.babel-global-help-close {
  position: absolute;
  top: -8px;
  right: -6px;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  padding: 0 0 2px;
  border-radius: 50%;
  font-size: 15px;
  box-shadow: 0 4px 12px rgba(12, 34, 27, .24);
}

.babel-global-help-close:hover,
.babel-global-help-close:focus-visible,
.babel-global-help-restore:hover,
.babel-global-help-restore:focus-visible {
  background: #202724;
  outline: 2px solid rgba(255, 255, 255, .86);
  outline-offset: 2px;
}

.babel-global-help-restore {
  width: 36px;
  height: 42px;
  display: none;
  place-items: center;
  padding: 0 5px 1px 0;
  border-right: 0;
  border-radius: 13px 0 0 13px;
  font-family: "Songti SC", "STSong", serif;
  font-size: 19px;
  box-shadow: 0 10px 24px rgba(12, 34, 27, .22);
}

.babel-global-help-shell[data-help-kind="teacher"] .babel-global-help-restore { background: rgba(12, 91, 75, .96); }
.babel-global-help-shell[data-help-kind="student"] .babel-global-help-restore { background: rgba(42, 91, 132, .96); }

.babel-global-help-shell[data-help-collapsed="true"] { right: 0; }
.babel-global-help-shell[data-help-collapsed="true"] .babel-global-help,
.babel-global-help-shell[data-help-collapsed="true"] .babel-global-help-close { display: none; }
.babel-global-help-shell[data-help-collapsed="true"] .babel-global-help-restore { display: grid; }

html.babel-page-tabs-ready body {
  padding-top: var(--babel-page-tabs-height) !important;
}

html.babel-page-tabs-ready body > .shell {
  height: calc(100vh - var(--babel-page-tabs-height));
}

html.babel-page-tabs-ready body > .chat-shell,
html.babel-page-tabs-ready body > .container {
  min-height: calc(100vh - var(--babel-page-tabs-height));
}

html.babel-page-tabs-ready .chat-rail,
html.babel-page-tabs-ready .chat-sidebar {
  top: var(--babel-page-tabs-height);
}

html.babel-page-tabs-ready .chat-rail {
  min-height: calc(100vh - var(--babel-page-tabs-height));
}

html.babel-page-tabs-dark {
  --babel-page-tabs-bg: rgba(12, 14, 16, .94);
  --babel-page-tabs-line: rgba(255, 255, 255, .12);
  --babel-page-tabs-ink: #f4f7fb;
  --babel-page-tabs-muted: #a7afbd;
  --babel-page-tabs-active: #86b7ff;
  --babel-page-tabs-soft: rgba(134, 183, 255, .14);
  --babel-page-tabs-shadow: 0 12px 34px rgba(0, 0, 0, .35);
}

.babel-page-tabs-root {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 2147482000;
  height: var(--babel-page-tabs-height);
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  color: var(--babel-page-tabs-ink);
  background: var(--babel-page-tabs-bg);
  border-bottom: 1px solid var(--babel-page-tabs-line);
  box-shadow: var(--babel-page-tabs-shadow);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  font-family: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

.babel-page-tabs-list {
  min-width: 0;
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  gap: 5px;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
}

.babel-page-tabs-list::-webkit-scrollbar {
  display: none;
}

.babel-page-tab,
.babel-page-tab-new,
.babel-page-tab-close {
  border: 1px solid var(--babel-page-tabs-line);
  color: var(--babel-page-tabs-ink);
  background: rgba(255, 255, 255, .40);
  font: inherit;
}

.babel-page-tab-new {
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  display: inline-grid;
  place-items: center;
  border-radius: 8px;
  color: var(--babel-page-tabs-active);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
}

.babel-page-tab {
  min-width: 86px;
  max-width: 184px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0 5px 0 10px;
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
  transition: border-color .16s ease, background .16s ease, transform .16s ease;
}

.babel-page-tab:hover,
.babel-page-tab-new:hover {
  border-color: color-mix(in srgb, var(--babel-page-tabs-active) 50%, var(--babel-page-tabs-line));
  background: var(--babel-page-tabs-soft);
}

.babel-page-tab.is-active {
  border-color: color-mix(in srgb, var(--babel-page-tabs-active) 70%, var(--babel-page-tabs-line));
  background: var(--babel-page-tabs-soft);
  color: var(--babel-page-tabs-active);
  font-weight: 700;
}

.babel-page-tab-label {
  min-width: 0;
  flex: 1 1 auto;
  overflow: hidden;
  text-overflow: ellipsis;
}

.babel-page-tab-close {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  display: inline-grid;
  place-items: center;
  padding: 0;
  border-radius: 6px;
  color: var(--babel-page-tabs-muted);
  background: transparent;
  cursor: pointer;
  line-height: 1;
}

.babel-page-tab-close:hover {
  color: #b44331;
  border-color: rgba(180, 67, 49, .35);
  background: rgba(180, 67, 49, .08);
}

@media (max-width: 720px) {
  .babel-page-tabs-root {
    padding-inline: 7px;
  }

  .babel-page-tab {
    min-width: 78px;
    max-width: 132px;
    padding-left: 8px;
  }

  .babel-global-help-shell {
    right: 10px;
    bottom: 10px;
  }

  .babel-global-help-shell[data-help-collapsed="true"] { right: 0; }

  .babel-global-help {
    min-width: 42px;
    min-height: 42px;
    justify-content: center;
    padding: 6px;
  }

  .babel-global-help-label { display: none; }
}