/* 右侧悬浮联系栏 — PC 竖排 / 手机右侧竖排（与 PC 风格一致） */

.sibom-float {
  position: fixed;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 1001;
  display: flex;
  flex-direction: column;
  flex-wrap: nowrap;
  border-radius: 8px;
  overflow: visible;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.16);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

.sibom-float__btn {
  position: relative;
  display: block;
  width: 46px;
  height: 46px;
  background: #c45500;
  color: #fff;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  transition: background 0.2s ease;
}

.sibom-float__btn:first-child {
  border-radius: 8px 8px 0 0;
}

.sibom-float__btn:last-child {
  border-bottom: none;
  border-radius: 0 0 8px 8px;
}

.sibom-float__btn:hover,
.sibom-float__btn:focus-visible {
  background: #a84600;
  color: #fff;
}

.sibom-float__btn--top {
  background: #fff;
  color: #c45500;
  border-top: 2px solid #eee;
}

.sibom-float__btn--top:hover,
.sibom-float__btn--top:focus-visible {
  background: #fff8f2;
  color: #a84600;
}

.sibom-float__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
}

.sibom-float__icon svg {
  width: 20px;
  height: 20px;
  fill: #fff;
  display: block;
}

.sibom-float__btn--top .sibom-float__icon svg {
  fill: #c45500;
  width: 22px;
  height: 22px;
}

.sibom-float__btn--top:hover .sibom-float__icon svg,
.sibom-float__btn--top:focus-visible .sibom-float__icon svg {
  fill: #a84600;
}

/* 悬停：标签向左滑出，按钮宽度不变 */
.sibom-float__tip {
  position: absolute;
  right: 46px;
  top: 0;
  height: 46px;
  display: flex;
  align-items: center;
  padding: 0 14px;
  background: #1a1a1a;
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
  border-radius: 4px 0 0 4px;
  box-shadow: -2px 2px 8px rgba(0, 0, 0, 0.15);
  opacity: 0;
  visibility: hidden;
  transform: translateX(6px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  pointer-events: none;
}

.sibom-float__btn:hover .sibom-float__tip,
.sibom-float__btn:focus-visible .sibom-float__tip {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

/* 手机端：右侧竖排小图标（不再横条） */
@media (max-width: 768px) {
  .sibom-float {
    top: auto;
    bottom: max(20px, env(safe-area-inset-bottom, 20px));
    right: 12px;
    transform: none;
    flex-direction: column;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  }

  .sibom-float__btn {
    width: 44px;
    height: 44px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    border-right: none;
  }

  .sibom-float__btn:first-child {
    border-radius: 8px 8px 0 0;
  }

  .sibom-float__btn:last-child {
    border-radius: 0 0 8px 8px;
    border-bottom: none;
  }

  .sibom-float__icon {
    width: 44px;
    height: 44px;
  }

  .sibom-float__icon svg {
    width: 19px;
    height: 19px;
  }

  .sibom-float__btn:active {
    filter: brightness(0.92);
  }

  .sibom-float__tip {
    display: none !important;
  }
}