.ni { max-height: 86vh; }
.ni-head { display: flex; align-items: center; gap: 12px; padding: 16px 18px 16px 22px; border-bottom: 1px solid var(--line); }
.ni-ico { width: 32px; height: 32px; border-radius: 10px; background: var(--ai-soft); color: var(--ai); display: grid; place-items: center; }
.ni-ico .icon { width: 20px; height: 20px; }
.ni-input { flex: 1; border: 0; background: transparent; font-size: 19px; color: var(--ink); }
.ni-input::placeholder { color: var(--ink-4); }
.ni-body { padding: 20px 22px; overflow: auto; min-height: 260px; flex: 1; }
.ni-foot { display: flex; align-items: center; gap: 12px; padding: 12px 18px; border-top: 1px solid var(--line); background: var(--surface-2); }

.ni-intro { padding: 12px 0; }
.ni-thinking { display: flex; flex-direction: column; gap: 18px; padding: 28px 8px; }
.ni-thinking > div { animation: fade-up 300ms var(--ease) both; }

.ni-grid { display: grid; grid-template-columns: 360px minmax(0, 1fr); gap: 28px; }
.ni-col { display: flex; flex-direction: column; min-width: 0; }
.ni-col .label { margin-bottom: 8px; }

.ni-pbs, .ni-srcs { display: flex; flex-direction: column; gap: 6px; }
.ni-pb {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  text-align: left;
  transition: all var(--t-fast) var(--ease);
}
.ni-pb:hover { border-color: var(--line-2); background: var(--surface-2); }
.ni-pb.on { border-color: var(--accent-2); background: var(--accent-soft); }
.ni-radio { width: 16px; height: 16px; margin-top: 2px; border-radius: 50%; border: 1.5px solid var(--ink-4); flex: none; display: grid; place-items: center; }
.ni-pb.on .ni-radio { border-color: var(--accent); }
.ni-pb.on .ni-radio::after { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }

.ni-src { display: flex; align-items: center; gap: 10px; padding: 7px 8px; border-radius: var(--r-sm); text-align: left; }
.ni-src:hover { background: var(--paper); }
.ni-check { width: 16px; height: 16px; border-radius: 4px; border: 1.5px solid var(--ink-4); display: grid; place-items: center; color: transparent; flex: none; }
.ni-src.on .ni-check { background: var(--accent); border-color: var(--accent); color: #fff; }
.ni-src:not(.on) { opacity: 0.62; }

.ni-outline { display: flex; flex-direction: column; gap: 2px; border-left: 2px solid var(--line); margin-left: 6px; padding-left: 10px; }
.ni-outline li { display: flex; gap: 10px; padding: 5px 0; font-size: var(--fs-13); }

.ni-title { width: 100%; border: 0; background: transparent; font-size: 22px; font-weight: 600; letter-spacing: -0.02em; padding: 6px 0 10px; color: var(--ink); border-bottom: 1px dashed var(--line-2); margin-bottom: 8px; }
.ni-title:focus { border-bottom-color: var(--accent-2); }
.ni-form { display: flex; flex-direction: column; }
.ni-f { display: flex; align-items: flex-start; gap: 12px; padding: 6px 0; border-bottom: 1px solid var(--line-soft); }
.ni-f > span:first-child { width: 64px; flex: none; padding-top: 8px; font-size: var(--fs-12); font-weight: 600; color: var(--ink-3); }
.ni-f .textarea { min-height: 0; }
.ni-f .seg { align-self: flex-start; }
.ni-km { width: 18px; height: 18px; border-radius: 50%; background: var(--paper-2); color: var(--ink-3); font-size: 11px; font-weight: 600; display: grid; place-items: center; flex: none; }

.ni-qs { margin-top: 16px; padding: 14px; border-radius: var(--r-md); background: var(--paper); border: 1px solid var(--line); }
.ni-pb-badge { width: 22px; height: 22px; border-radius: 6px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent); }
.ni-q { display: grid; grid-template-columns: 140px 1fr; gap: 12px; align-items: center; padding: 4px 0; }
.ni-q-text { font-size: var(--fs-13); color: var(--ink-2); }
.ni-q-text i { color: var(--bad); font-style: normal; margin-left: 2px; }

.ni-cat { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.ni-cat-card { display: flex; flex-direction: column; gap: 6px; padding: 14px; border: 1px solid var(--line); border-radius: var(--r-md); text-align: left; transition: all var(--t-fast) var(--ease); }
.ni-cat-card:hover { border-color: var(--accent-2); box-shadow: var(--sh-1); }
.ni-list { display: flex; flex-direction: column; }
.ni-row { display: flex; align-items: center; gap: 12px; padding: 10px 8px; border-bottom: 1px solid var(--line-soft); text-align: left; width: 100%; }
button.ni-row:hover { background: var(--surface-2); }
.ni-drop { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; min-height: 240px; border: 1.5px dashed var(--line-2); border-radius: var(--r-lg); color: var(--ink-2); background: var(--surface-2); }
.ni-drop > .icon { color: var(--ink-4); width: 28px; height: 28px; }