.sidebar { position: sticky; top: 92px; }
.sidebar-card {
  padding: 18px; border-radius: 28px; background: var(--panel);
  border: 1px solid rgba(201, 213, 232, 0.8); box-shadow: var(--shadow);
}
.sidebar-head {
  display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; padding-bottom: 16px; border-bottom: 1px solid var(--line);
}
.sidebar-head h2 { margin: 0 0 8px; font-size: 18px; }
.sidebar-head p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.55; }
.sidebar-list {
  display: flex; flex-direction: column; gap: 10px; max-height: calc(100vh - 230px); overflow: auto; padding: 14px 4px 8px 0; margin-right: -4px;
}
.sidebar-list::-webkit-scrollbar { width: 8px; }
.sidebar-list::-webkit-scrollbar-track { background: transparent; }
.sidebar-list::-webkit-scrollbar-thumb { background: rgba(111, 127, 154, 0.22); border-radius: 999px; }
.side-item {
  display: flex; gap: 12px; align-items: center;
  padding: 13px 14px; border: 1px solid var(--line); border-radius: 20px;
  background: #fff; cursor: pointer; transition: .18s ease;
}
.side-item:hover { border-color: var(--line-strong); box-shadow: 0 10px 20px rgba(15,29,68,.04); }
.side-item.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.side-item.active .side-meta, .side-item.active .count-pill { color: rgba(255,255,255,0.85); border-color: rgba(255,255,255,0.12); }
.side-emoji {
  width: 38px; height: 38px; border-radius: 14px; display: grid; place-items: center;
  border: 1px solid var(--line); background: #fff; font-size: 21px; flex: 0 0 auto;
}
.side-item.active .side-emoji { border-color: rgba(255,255,255,0.12); }
.side-copy { min-width: 0; flex: 1; }
.side-title { display: block; font-weight: 800; font-size: 17px; line-height: 1.15; }
.side-meta { display: block; margin-top: 4px; color: var(--muted); font-weight: 600; font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.count-pill {
  min-width: 34px; height: 34px; padding: 0 10px; border-radius: 999px; display: grid; place-items: center;
  border: 1px solid var(--line); background: #f7f9fd; color: #617596; font-weight: 800; font-size: 13px;
}
.sidebar-note { margin-top: 14px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; line-height: 1.6; }
.sidebar.collapsed .side-copy, .sidebar.collapsed .count-pill, .sidebar.collapsed .sidebar-note, .sidebar.collapsed .sidebar-head > div { display: none; }
.sidebar.collapsed .sidebar-card { padding: 12px; }
.sidebar.collapsed { width: 92px; }
.sidebar.collapsed .side-item { justify-content: center; padding: 12px; }
.sidebar.collapsed .sidebar-head { justify-content: center; border-bottom: 0; padding-bottom: 8px; }