/* ============================================================
   Support FAB — 在线客服浮动按钮
   暖色：琥珀 #f59e0b，占位态（功能未接）
   ============================================================ */

.support-fab {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 90;

  display: inline-flex;
  align-items: center;
  gap: 8px;

  height: 52px;
  padding: 0 22px 0 18px;
  border: none;
  border-radius: 9999px;
  cursor: pointer;

  background: #f59e0b;
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;

  box-shadow: 0 10px 24px rgba(245, 158, 11, 0.30),
              0 2px 6px rgba(17, 17, 17, 0.12);
  transition: background-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.support-fab:hover {
  background: #d97706;
  transform: translateY(-2px);
  box-shadow: 0 16px 32px rgba(217, 119, 6, 0.36),
              0 2px 6px rgba(17, 17, 17, 0.14);
}

.support-fab:active {
  transform: translateY(0);
}

.support-fab:focus-visible {
  outline: 2px solid rgba(245, 158, 11, 0.6);
  outline-offset: 3px;
}

.support-fab-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
}

.support-fab-icon svg {
  width: 20px;
  height: 20px;
}

/* 移动端：缩成纯图标圆 */
@media (max-width: 560px) {
  .support-fab {
    width: 52px;
    padding: 0;
    justify-content: center;
  }

  .support-fab-text {
    display: none;
  }
}