/* 官网 · 在线客服浮窗 */
.cs-fab {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 900;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  border: none;
  border-radius: 999px;
  background: linear-gradient(135deg, #0ea5e9, #6366f1);
  color: #fff;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 8px 28px rgba(14, 165, 233, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cs-fab:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(14, 165, 233, 0.45);
}

.cs-panel {
  position: fixed;
  right: 22px;
  bottom: 82px;
  z-index: 901;
  width: min(400px, calc(100vw - 32px));
  height: min(520px, calc(100vh - 120px));
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 16px;
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.18);
  overflow: hidden;
}

.cs-panel[hidden] {
  display: none !important;
}

.cs-head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px 12px;
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  background: linear-gradient(160deg, #f0f9ff, #fff);
}

.cs-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  background: linear-gradient(145deg, rgba(14, 165, 233, 0.2), rgba(99, 102, 241, 0.2));
  border: 1px solid rgba(14, 165, 233, 0.35);
}

.cs-head-meta {
  flex: 1;
  min-width: 0;
}

.cs-head-meta h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: #0f172a;
}

.cs-head-meta p {
  margin: 4px 0 0;
  font-size: 0.78rem;
  color: #64748b;
  line-height: 1.4;
}

.cs-close {
  border: none;
  background: transparent;
  color: #94a3b8;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 4px;
}

.cs-messages {
  flex: 1;
  overflow-y: auto;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: #f8fafc;
}

.cs-msg {
  max-width: 88%;
  padding: 10px 12px;
  border-radius: 12px;
  font-size: 0.86rem;
  line-height: 1.55;
  word-break: break-word;
}

.cs-msg.user {
  align-self: flex-end;
  background: linear-gradient(135deg, #0ea5e9, #0284c7);
  color: #fff;
  border-bottom-right-radius: 4px;
}

.cs-msg.assistant {
  align-self: flex-start;
  background: #fff;
  color: #1e293b;
  border: 1px solid rgba(15, 23, 42, 0.06);
  border-bottom-left-radius: 4px;
}

.cs-msg-label {
  display: block;
  font-size: 0.68rem;
  font-weight: 600;
  opacity: 0.72;
  margin-bottom: 4px;
}

.cs-foot {
  padding: 12px 14px 14px;
  border-top: 1px solid rgba(15, 23, 42, 0.06);
  background: #fff;
}

.cs-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}

.cs-quick button {
  border: 1px solid rgba(14, 165, 233, 0.25);
  background: #f0f9ff;
  color: #0369a1;
  font-size: 0.72rem;
  padding: 4px 10px;
  border-radius: 999px;
  cursor: pointer;
}

.cs-input-row {
  display: flex;
  gap: 8px;
}

.cs-input-row input {
  flex: 1;
  min-width: 0;
  border: 1px solid rgba(15, 23, 42, 0.12);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 0.86rem;
  outline: none;
}

.cs-input-row input:focus {
  border-color: #0ea5e9;
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

.cs-send {
  border: none;
  border-radius: 10px;
  padding: 0 16px;
  background: #0ea5e9;
  color: #fff;
  font-weight: 600;
  font-size: 0.86rem;
  cursor: pointer;
}

.cs-send:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.cs-status {
  margin-top: 8px;
  font-size: 0.72rem;
  color: #64748b;
  min-height: 1em;
}

.cs-status.err {
  color: #dc2626;
}

@media (max-width: 640px) {
  .cs-fab {
    right: 16px;
    bottom: 16px;
    padding: 11px 16px;
  }

  .cs-panel {
    right: 16px;
    left: 16px;
    bottom: 72px;
    width: auto;
  }
}