/* ================================================================
   WhatsApp 悬浮按钮
   - 右下角固定，不遮挡内容
   - 移动端优先显示（老外客户多在手机上询盘）
   - 点击展开：直接WhatsApp 对话 / 写邮件 / 看价格
   ================================================================ */

.wa-fab {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 900;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px 12px 14px;
  background: #25d366;
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border-radius: 999px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, .18);
  text-decoration: none;
  transition: transform .15s, box-shadow .15s;
}
.wa-fab:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, .24);
}
.wa-fab svg { width: 22px; height: 22px; flex: none; fill: currentColor; }

/* 未展开时只显示图标（桌面端省地方） */
.wa-fab .wa-label { display: none; }
@media (max-width: 860px) { .wa-fab .wa-label { display: inline; } }

/* 收起态：只圆图标 */
@media (min-width: 861px) {
  .wa-fab { padding: 14px; }
}

/* 卡片：点开后的三个动作 */
.wa-panel {
  position: fixed;
  right: 20px;
  bottom: 84px;
  z-index: 901;
  width: 292px;
  max-width: calc(100vw - 40px);
  background: #fff;
  border: 1px solid var(--line, #e2e2e2);
  border-radius: 14px;
  box-shadow: 0 10px 34px rgba(0, 0, 0, .16);
  overflow: hidden;
  display: none;
}
.wa-panel.open { display: block; }

.wa-panel .wa-hd {
  padding: 15px 17px 13px;
  background: #f2f7f5;
  border-bottom: 1px solid var(--line, #e2e2e2);
}
.wa-panel .wa-hd strong {
  display: block;
  font-size: 15.5px;
  color: var(--ink, #1a1a1a);
  margin-bottom: 3px;
}
.wa-panel .wa-hd span {
  display: block;
  font-size: 12.5px;
  color: var(--ink-3, #777);
  line-height: 1.45;
}

.wa-panel a.wa-act {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  padding: 13px 17px;
  border-bottom: 1px solid var(--line, #eef0ef);
  text-decoration: none;
  color: inherit;
  transition: background .12s;
}
.wa-panel a.wa-act:last-child { border-bottom: 0; }
.wa-panel a.wa-act:hover { background: #f7faf9; }
.wa-panel a.wa-act .ic {
  width: 30px; height: 30px; flex: none;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px;
  background: var(--bg-3, #f0f1f1);
}
.wa-panel a.wa-act .tt {
  display: block;
  font-size: 14.2px;
  font-weight: 600;
  color: var(--ink, #1a1a1a);
  margin-bottom: 2px;
}
.wa-panel a.wa-act .dd {
  display: block;
  font-size: 12.8px;
  color: var(--ink-3, #777);
  line-height: 1.45;
}
.wa-panel .wa-ft {
  padding: 11px 17px;
  background: #fafbfb;
  font-size: 12px;
  color: var(--ink-3, #777);
  line-height: 1.5;
}

/* 移动端：按钮贴底更明显 */
@media (max-width: 860px) {
  .wa-fab { right: 16px; bottom: 16px; padding: 13px 20px 13px 15px; }
  .wa-panel { right: 16px; bottom: 80px; }
}

/* 移动端浏览器底栏避让 */
@supports (padding: env(safe-area-inset-bottom)) {
  .wa-fab { bottom: calc(20px + env(safe-area-inset-bottom)); }
  .wa-panel { bottom: calc(84px + env(safe-area-inset-bottom)); }
}

/* 打印时隐藏 */
@media print {
  .wa-fab, .wa-panel { display: none !important; }
}