* { box-sizing: border-box; margin: 0; padding: 0; }
body { font: 14px/1.6 -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #f4f6f8; color: #1f2a37; }
.hidden { display: none !important; }
.panel.center { max-width: 380px; margin: 12vh auto; background: #fff; padding: 32px;
  border-radius: 12px; box-shadow: 0 4px 24px rgba(0,0,0,.08); text-align: center; }
.panel.center h1 { margin-bottom: 4px; }
.sub { color: #64748b; margin-bottom: 20px; font-size: 13px; }
input, textarea { width: 100%; padding: 9px 12px; margin: 6px 0; border: 1px solid #d7dde5;
  border-radius: 8px; font: inherit; background: #fff; }
button { padding: 9px 16px; border: 0; border-radius: 8px; background: #1a56db; color: #fff;
  font: inherit; cursor: pointer; margin: 6px 4px 0 0; }
button:hover { background: #1648b8; }
button.ghost { background: #eef2f7; color: #1f2a37; }
button.sm { padding: 4px 10px; font-size: 12px; }
.row { display: flex; justify-content: center; gap: 8px; }
.msg { color: #b91c1c; font-size: 12px; margin-top: 8px; min-height: 18px; }
header { display: flex; align-items: center; gap: 16px; background: #fff;
  padding: 10px 20px; border-bottom: 1px solid #e5eaf0; }
header .logo { font-weight: 700; font-size: 16px; }
header #userInfo { flex: 1; color: #64748b; font-size: 13px; }
.cols { display: grid; grid-template-columns: 260px 1fr 300px; gap: 14px;
  padding: 14px; height: calc(100vh - 53px); }
aside, main { background: #fff; border-radius: 10px; padding: 14px;
  overflow-y: auto; display: flex; flex-direction: column; }
aside h3 { font-size: 13px; color: #475569; margin: 10px 0 6px; }
.hint { font-size: 12px; color: #94a3b8; margin: 2px 0 6px; }
.proj { padding: 8px 10px; border-radius: 8px; cursor: pointer; margin: 3px 0;
  border: 1px solid transparent; }
.proj:hover { background: #f1f5f9; }
.proj.active { background: #e8effd; border-color: #b6ccf5; }
.proj .stage { font-size: 11px; color: #64748b; }
.agent-grid { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.agent-chip { padding: 5px 10px; border-radius: 16px; background: #f1f5f9;
  cursor: pointer; font-size: 12px; border: 1px solid transparent; }
.agent-chip.active { background: #e8effd; border-color: #1a56db; color: #1a56db; }
.agent-chip.svc { background: #f5f0fa; }
#chatLog { flex: 1; overflow-y: auto; padding: 6px 2px; }
.bubble { max-width: 82%; padding: 10px 14px; border-radius: 12px; margin: 6px 0;
  white-space: pre-wrap; word-break: break-word; }
.bubble.user { background: #1a56db; color: #fff; margin-left: auto; }
.bubble.ai { background: #f1f5f9; }
.bubble.sys { background: #fef3c7; font-size: 12px; color: #92400e; max-width: 100%; }
.bubble .meta { font-size: 11px; opacity: .65; margin-bottom: 4px; }
.bubble .md { white-space: normal; }
.bubble .md p { margin: 4px 0; }
.bubble .md ul { margin: 4px 0 4px 18px; }
.bubble .md li { margin: 2px 0; }
.bubble .md h4, .bubble .md h5, .bubble .md h6 {
  margin: 10px 0 4px; font-size: 14px; font-weight: 700; }
.bubble .md hr { border: 0; border-top: 1px solid #dbe2ea; margin: 10px 0; }
.bubble .md blockquote { border-left: 3px solid #b6ccf5; padding-left: 10px;
  color: #475569; margin: 6px 0; }
.bubble .md code { background: #e8eef6; border-radius: 4px; padding: 1px 5px;
  font-size: 12.5px; }
.chatbar { display: flex; gap: 8px; align-items: flex-end; border-top: 1px solid #e5eaf0;
  padding-top: 10px; }
.chatbar textarea { flex: 1; resize: none; }
#materialResult, #refResult { font-size: 12px; margin: 6px 0; }
.ok { color: #047857; } .bad { color: #b91c1c; }
pre.disclosure { background: #f8fafc; border: 1px solid #e5eaf0; border-radius: 8px;
  padding: 10px; font-size: 12px; white-space: pre-wrap; margin-top: 8px; }
.modal { position: fixed; inset: 0; background: rgba(15,23,42,.45);
  display: flex; align-items: center; justify-content: center; z-index: 50; }
.modal-box { background: #fff; border-radius: 12px; padding: 22px; width: 560px;
  max-width: 92vw; max-height: 82vh; overflow-y: auto; }
.modal-box h3 { margin: 12px 0 6px; }
table.grid { border-collapse: collapse; width: 100%; font-size: 12px; }
table.grid th, table.grid td { border: 1px solid #e5eaf0; padding: 4px 8px; text-align: left; }
@media (max-width: 900px) { .cols { grid-template-columns: 1fr; height: auto; } }