.pc-root { position: fixed; right: 18px; bottom: 18px; z-index: 999999; font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial; }

.pc-fab {
  width: 56px; height: 56px; border-radius: 50%;
  border: none; cursor: pointer;
  box-shadow: 0 10px 25px rgba(0,0,0,.2);
  font-size: 22px;
  background: #ffcc05;
}

.pc-panel {
  width: 340px; max-width: calc(100vw - 36px);
  height: 520px; max-height: calc(100vh - 36px);
  background: #fff; border-radius: 14px;
  box-shadow: 0 18px 50px rgba(0,0,0,.25);
  overflow: hidden;
  display: flex; flex-direction: column;
}

.pc-hidden { display: none !important; }

.pc-header {
  padding: 12px 12px;
  display: flex; align-items: center; justify-content: space-between;
  background: #ffcc05;
  border-bottom: 1px solid #eee;
}
.pc-sub { font-size: 12px; opacity: .7; margin-left: 6px; }
.pc-close { border: none; background: transparent; cursor: pointer; font-size: 18px; }

.pc-body { padding: 12px; overflow: auto; flex: 1; background: #fff; }
.pc-msg { padding: 10px 10px; border-radius: 12px; margin: 8px 0; line-height: 1.5; font-size: 14px; }
.pc-bot { background: #f2f2f2; margin-right: 36px; }
.pc-user { background: #e7f1ff; margin-left: 36px; text-align: left; white-space: pre-wrap; }

.pc-quick { padding: 10px 12px; display: flex; flex-wrap: wrap; gap: 8px; border-top: 1px solid #eee; background: #fafafa; }
.pc-qbtn {
  border: 1px solid #ddd; background: #fff; cursor: pointer;
  padding: 8px 10px; border-radius: 999px; font-size: 13px;
}

.pc-form { display:flex; gap: 8px; padding: 10px 12px; border-top: 1px solid #eee; background: #0aa906; color: #fff;}
.pc-input { flex:1; padding: 10px 10px; border-radius: 10px; border: 1px solid #ddd; outline: none; }
.pc-send { padding: 10px 12px; border: none; border-radius: 10px; cursor:pointer; background: #ffcc05;}

.pc-bot a { color: #0a60c8; text-decoration: underline; }
.pc-bot a:hover { color: #084a9e; }