/* 广告墙游客客服浮层 — 配色与站点主题 #4f3874 / #6d4ea0 一致 */
.kefu-fab {
  position: fixed;
  right: 5px;
  bottom: 20px;
  z-index: 9990;
  width: 70px;
  height: 70px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent url('../img/kefu-fab.png') center center / contain no-repeat;
  color: transparent;
  font-size: 0;
  line-height: 0;
  overflow: visible;
  box-shadow: 0 8px 22px rgba(47, 22, 77, 0.28);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.kefu-fab:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(47, 22, 77, 0.34);
}
.kefu-fab:active {
  transform: translateY(0);
}
@media (max-width: 768px) {
  .kefu-fab {
    right: 5px;
    bottom: 72px;
  }
}
.kefu-fab__badge {
  position: absolute;
  top: 2px;
  right: 2px;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 9px;
  background: #ff4d4f;
  color: #fff;
  font-size: 11px;
  line-height: 18px;
  text-align: center;
  display: none;
}
.kefu-panel {
  position: fixed;
  right: 12px;
  bottom: 100px;
  z-index: 9991;
  width: min(380px, calc(100vw - 24px));
  height: min(560px, calc(100vh - 120px));
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 12px 40px rgba(48, 34, 76, 0.2);
  display: none;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid rgba(79, 56, 116, 0.12);
}
.kefu-panel.is-open { display: flex; }
.kefu-panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: linear-gradient(135deg, #4f3874, #6d4ea0);
  color: #fff;
}
.kefu-panel__head h3 { margin: 0; font-size: 16px; font-weight: 600; }
.kefu-panel__head button {
  border: 0;
  background: transparent;
  color: #fff;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}
.kefu-panel__status { font-size: 12px; opacity: .9; margin-top: 2px; }
.kefu-panel__msgs {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  background: #fbf9ff;
}
.kefu-msg { margin-bottom: 10px; max-width: 82%; clear: both; }
.kefu-msg--user { float: right; }
.kefu-msg--admin { float: left; }
.kefu-msg__body {
  padding: 8px 10px;
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 1px 2px rgba(0,0,0,.05);
  word-break: break-word;
  line-height: 1.45;
  font-size: 14px;
}
.kefu-msg--user .kefu-msg__body {
  background: linear-gradient(135deg, #4f3874, #6d4ea0);
  color: #fff;
}
.kefu-msg__body img,
.kefu-msg__body video { max-width: 200px; display: block; border-radius: 6px; }
.kefu-panel__foot {
  border-top: 1px solid rgba(79, 56, 116, 0.12);
  background: #fff;
  padding: 8px 10px;
}
.kefu-panel__tools { display: flex; gap: 8px; margin-bottom: 6px; }
.kefu-panel__tools label,
.kefu-panel__tools button {
  border: 1px solid rgba(79, 56, 116, 0.16);
  background: rgba(79, 56, 116, 0.04);
  color: #4f3874;
  border-radius: 6px;
  padding: 4px 8px;
  font-size: 12px;
  cursor: pointer;
}
.kefu-panel__tools label:hover,
.kefu-panel__tools button:hover {
  background: rgba(79, 56, 116, 0.08);
}
.kefu-panel__input {
  display: flex;
  gap: 8px;
}
.kefu-panel__input textarea {
  flex: 1;
  resize: none;
  border: 1px solid rgba(79, 56, 116, 0.16);
  border-radius: 8px;
  padding: 8px;
  font-size: 14px;
  min-height: 40px;
  max-height: 90px;
}
.kefu-panel__input textarea:focus {
  outline: none;
  border-color: #6d4ea0;
  box-shadow: 0 0 0 2px rgba(79, 56, 116, 0.12);
}
.kefu-panel__input button {
  border: 0;
  border-radius: 8px;
  background: linear-gradient(135deg, #4f3874, #6d4ea0);
  color: #fff;
  padding: 0 14px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(79, 56, 116, 0.24);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.kefu-panel__input button:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(79, 56, 116, 0.3);
}
.kefu-panel__input button:active {
  transform: translateY(0);
}