.fc-tab-bar,
#mob-nav.fc-tab-bar {
  display: none !important;
}

@media (max-width: 900px) {
  .fc-tab-bar,
  #mob-nav.fc-tab-bar {
    position: fixed !important;
    right: auto !important;
    left: 50% !important;
    bottom: max(14px, calc(8px + env(safe-area-inset-bottom))) !important;
    z-index: var(--fc-z-tab-bar, 9000) !important;
    display: grid !important;
    grid-template-columns: 64px auto !important;
    align-items: stretch !important;
    justify-content: normal !important;
    gap: 8px !important;
    width: max-content !important;
    max-width: calc(100% - 32px) !important;
    height: 50px !important;
    margin: 0 !important;
    padding: 0 !important;
    border: 0 !important;
    border-radius: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
    transform: translate3d(-50%, 0, 0) !important;
    -webkit-backdrop-filter: none !important;
    backdrop-filter: none !important;
  }

  .fc-tab-bar__today,
  .fc-tab-bar__segments {
    position: relative;
    isolation: isolate;
    min-width: 0;
    height: 50px;
    overflow: hidden;
    /* 与首页 dock 同一种纯毛玻璃：半透明米色 + 模糊 + 极淡细边，不要高光、投影（2026-10-09） */
    border: 1px solid rgba(90, 78, 60, .10);
    border-radius: 25px;
    background: rgba(233, 227, 214, .42);
    box-shadow: none;
    -webkit-backdrop-filter: blur(16px) saturate(1.15);
    backdrop-filter: blur(16px) saturate(1.15);
  }

  .fc-tab-bar__today::before,
  .fc-tab-bar__segments::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    border-radius: inherit;
    background: none;
    pointer-events: none;
  }

  .fc-tab-bar__segments {
    display: grid;
    /* 「排盘」格 60.3px = 字宽 31.3（15+1.3+15）+ 两边各 14.5（单字在 44px 格里的半空隙）：
       四个字之间空隙一样，「排盘」左边与「研」右边到胶囊边也一样（同首页 dock，2026-10-09） */
    grid-template-columns: 60.3px repeat(3, var(--fc-touch-target, 44px));
    align-items: stretch;
    padding: 3px;
  }

  .fc-tab-bar__today,
  .fc-tab-bar__item {
    position: relative;
    z-index: 1;
    display: grid;
    place-items: center;
    width: var(--fc-touch-target, 44px);
    min-width: var(--fc-touch-target, 44px);
    min-height: var(--fc-touch-target, 44px);
    padding: 0;
    border: 0;
    border-radius: 22px;
    color: #2F2B26;
    font: 500 15px/1 var(--font-title, var(--font, serif));
    letter-spacing: .08em;
    text-indent: .08em;
    white-space: nowrap;
    text-decoration: none;
    appearance: none;
    -webkit-appearance: none;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    transition-property: color, background-color, transform;
    transition-duration: var(--fc-motion-fast, 150ms);
    transition-timing-function: var(--fc-motion-ease, cubic-bezier(.2, 0, 0, 1));
  }

  .fc-tab-bar__today {
    width: 64px;
    min-width: 64px;
    height: 50px;
    border-radius: 25px;
    color: #2F2B26;
    font: 500 15px/1 var(--font-body, var(--font, serif));
    letter-spacing: .1em;
  }

  .fc-tab-bar__item {
    background: transparent;
  }

  .fc-tab-bar__segments > .fc-tab-bar__item:first-child {
    width: 60.3px;
    min-width: 60.3px;
    letter-spacing: 1.3px;
    text-indent: 1.3px;
  }

  /* 「卜」左竖右点，墨迹偏右：同首页 dock，右侧加 3.75px，选中时字在胶囊里左右看起来一样 */
  .fc-tab-bar__segments > .fc-tab-bar__item:nth-child(3) {
    padding-right: 3.75px;
  }

  .fc-tab-bar__today:is(:hover, :focus-visible),
  .fc-tab-bar__item:is(:hover, :focus-visible) {
    color: #1C1915;
  }

  .fc-tab-bar__today:focus-visible,
  .fc-tab-bar__item:focus-visible {
    outline: 2px solid rgba(53, 93, 120, .5);
    outline-offset: -3px;
  }

  .fc-tab-bar__today:active,
  .fc-tab-bar__item:active {
    transform: scale(var(--fc-motion-press-scale, .96));
  }

  /* 选中：浅一层的玻璃，字仍是墨色（同首页 dock） */
  .fc-tab-bar__item[aria-current="page"],
  .fc-tab-bar__item[aria-expanded="true"],
  .fc-tab-bar__today[aria-current="page"] {
    background: rgba(242, 237, 226, .62);
    color: #2F2B26;
    box-shadow: none;
  }
}

@media (max-width: 360px) {
  .fc-tab-bar,
  #mob-nav.fc-tab-bar {
    grid-template-columns: 48px auto !important;
    gap: 5px !important;
  }

  .fc-tab-bar__today {
    width: 48px;
    min-width: 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .fc-tab-bar__today,
  .fc-tab-bar__item {
    transition-duration: var(--fc-motion-instant, .001ms) !important;
  }
}