.csl-site-chat {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 1050;
  font-family: system-ui, -apple-system, Segoe UI, sans-serif;
}
.csl-site-chat-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: none;
  border-radius: 999px;
  padding: 12px 16px;
  background: linear-gradient(135deg, #172a74, #21a9af);
  color: #fff;
  font-weight: 700;
  box-shadow: 0 8px 24px rgba(23, 42, 116, 0.35);
  cursor: pointer;
}
.csl-site-chat-panel {
  width: min(360px, calc(100vw - 28px));
  height: 420px;
  margin-bottom: 10px;
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 16px;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.18);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.csl-site-chat-panel[hidden] { display: none !important; }
.csl-site-chat-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px;
  background: #0f1c4d;
  color: #fff;
}
.csl-site-chat-close {
  border: none;
  background: transparent;
  color: #fff;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
}
.csl-site-chat-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px 10px;
  border-bottom: 1px solid #e5e7eb;
  background: #fff;
}
.csl-site-chat-chips button {
  border: 1px solid #c7d2fe;
  background: #eef2ff;
  color: #172a74;
  border-radius: 999px;
  padding: 5px 10px;
  font-size: 0.72rem;
  font-weight: 700;
  cursor: pointer;
}
.csl-site-chat-chips button:hover {
  background: #172a74;
  color: #fff;
  border-color: #172a74;
}
.csl-site-chat-msgs {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  background: #f8fafc;
}
.csl-msg {
  max-width: 92%;
  margin-bottom: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  font-size: 0.9rem;
  line-height: 1.4;
  white-space: pre-wrap;
}
.csl-msg.bot { background: #fff; border: 1px solid #e5e7eb; color: #0f172a; }
.csl-msg.user { background: #172a74; color: #fff; margin-left: auto; }
.csl-msg .csl-links { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 6px; }
.csl-msg .csl-links a {
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 8px;
  background: #eef2ff;
  color: #172a74;
  text-decoration: none;
}
.csl-site-chat-form {
  display: flex;
  gap: 8px;
  padding: 10px;
  border-top: 1px solid #e5e7eb;
  background: #fff;
}
.csl-site-chat-form input {
  flex: 1;
  border: 1px solid #d1d5db;
  border-radius: 10px;
  padding: 8px 10px;
  font-size: 0.9rem;
}
.csl-site-chat-form button {
  border: none;
  border-radius: 10px;
  padding: 8px 12px;
  background: #21a9af;
  color: #fff;
  font-weight: 700;
  cursor: pointer;
}
@media (max-width: 575px) {
  .csl-site-chat { right: 12px; bottom: 12px; }
}