:root {
  --bg: #f4f6fa; --card: #fff; --text: #1f2937; --muted: #6b7280; --line: #e5e7eb;
  --pri: #2563eb; --pri-soft: #eff4ff; --ok: #059669; --ok-soft: #ecfdf5; --warn: #b45309; --warn-soft: #fffbeb;
  --bad: #dc2626; --bad-soft: #fef2f2; --side: #16213a; --in: #f0f7ff; --out: #f3fbf5;
}
* { box-sizing: border-box; }
body { margin: 0; font: 14px/1.6 -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif; color: var(--text); background: var(--bg); display: flex; min-height: 100vh; }
#side { width: 200px; flex-shrink: 0; background: var(--side); color: #cbd5e1; position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; }
.brand { font-size: 17px; font-weight: 700; color: #fff; padding: 20px 18px; }
nav a { display: block; padding: 10px 18px; color: #cbd5e1; text-decoration: none; border-left: 3px solid transparent; }
nav a:hover { background: rgba(255,255,255,.06); color: #fff; }
nav a.on { background: rgba(255,255,255,.1); color: #fff; border-left-color: #60a5fa; }
.ai-status { margin-top: auto; padding: 14px 18px; font-size: 12px; }
main { flex: 1; padding: 24px 28px 80px; min-width: 0; max-width: 1400px; }
h1 { font-size: 22px; margin: 0 0 16px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
h2 { font-size: 16px; margin: 0 0 12px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
h3 { font-size: 14px; margin: 12px 0 8px; }
a { color: var(--pri); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 18px 20px; margin-bottom: 16px; }
.muted { color: var(--muted); font-size: 12px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.grow { flex: 1; }
.right { margin-left: auto; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 10px 16px; }
.grid .wide { grid-column: 1 / -1; }
label.f { display: flex; flex-direction: column; gap: 3px; font-size: 12px; color: var(--muted); }
input, select, textarea { font: inherit; padding: 7px 10px; border: 1px solid #d1d5db; border-radius: 6px; background: #fff; color: var(--text); width: 100%; }
input[type=checkbox], input[type=radio] { width: auto; }
textarea { resize: vertical; min-height: 70px; }
input:focus, select:focus, textarea:focus { outline: 2px solid #bfdbfe; border-color: var(--pri); }
button, .btn { font: inherit; padding: 7px 14px; border-radius: 6px; border: 1px solid #d1d5db; background: #fff; color: var(--text); cursor: pointer; white-space: nowrap; text-decoration: none; display: inline-block; }
button:hover, .btn:hover { background: #f9fafb; }
button.pri, .btn.pri { background: var(--pri); border-color: var(--pri); color: #fff; }
button.pri:hover { background: #1d4ed8; }
button.ok { background: var(--ok); border-color: var(--ok); color: #fff; }
button.bad { color: var(--bad); border-color: #fecaca; }
button.sm, .btn.sm { padding: 3px 9px; font-size: 12px; }
button:disabled { opacity: .55; cursor: not-allowed; }
.tag { display: inline-block; padding: 0 8px; border-radius: 10px; font-size: 12px; background: #eef2f7; color: #475569; line-height: 20px; white-space: nowrap; }
.tag.High, .tag.hi { background: var(--bad-soft); color: var(--bad); }
.tag.Medium { background: var(--warn-soft); color: var(--warn); }
.tag.Low { background: #eef2f7; }
.tag.ai { background: #f5f3ff; color: #7c3aed; }
.tag.ok { background: var(--ok-soft); color: var(--ok); }
.tag.pri { background: var(--pri-soft); color: var(--pri); }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; color: var(--muted); font-weight: 600; background: #fafbfc; }
tr.click { cursor: pointer; }
tr.click:hover td { background: #f8fafc; }
.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; }
.stat b { font-size: 26px; display: block; }
.stat span { color: var(--muted); font-size: 12px; }
.alert { padding: 10px 14px; border-radius: 8px; margin: 8px 0; }
.alert.warn { background: var(--warn-soft); color: #92400e; border: 1px solid #fde68a; }
.alert.bad { background: var(--bad-soft); color: #991b1b; border: 1px solid #fecaca; }
.alert.ok { background: var(--ok-soft); color: #065f46; border: 1px solid #a7f3d0; }
.alert.info { background: var(--pri-soft); color: #1e40af; border: 1px solid #bfdbfe; }
.alert ul { margin: 4px 0 0; padding-left: 20px; }

/* 中英对照 */
.bi { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.bi > div { min-width: 0; }
.bi .lab { font-size: 12px; color: var(--muted); font-weight: 600; margin-bottom: 4px; display: flex; align-items: center; gap: 8px; }
.pre { white-space: pre-wrap; word-break: break-word; }

/* 对话时间线 */
.msg { border: 1px solid var(--line); border-radius: 8px; margin-bottom: 10px; overflow: hidden; }
.msg.in { background: var(--in); border-left: 4px solid #60a5fa; }
.msg.out { background: var(--out); border-left: 4px solid #34d399; }
.msg .mh { display: flex; gap: 8px; align-items: center; padding: 6px 12px; font-size: 12px; color: var(--muted); border-bottom: 1px dashed var(--line); flex-wrap: wrap; }
.msg .mh b { color: var(--text); }
.msg .bi { padding: 10px 12px; gap: 18px; }
.msg .bi > div + div { border-left: 1px dashed #d1d5db; padding-left: 18px; }
.msg .empty { color: #9ca3af; font-style: italic; }

/* 录入 */
.turn { border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; margin-bottom: 10px; }
.turn.in { background: var(--in); }
.turn.out { background: var(--out); }
.turn .row { margin-bottom: 6px; }
.turn select, .turn input { width: auto; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 14px; }
.tabs button { border: none; border-bottom: 2px solid transparent; border-radius: 0; background: none; padding: 8px 14px; }
.tabs button.on { border-bottom-color: var(--pri); color: var(--pri); font-weight: 600; }

/* QA */
.qa-item { border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; margin-bottom: 10px; }
.qa-item.todo { border-left: 4px solid #f59e0b; }
.qa-item .q { display: flex; gap: 8px; align-items: baseline; flex-wrap: wrap; }
.qa-item .q .n { font-weight: 700; color: var(--pri); }

.dup { border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; margin-bottom: 8px; }
.dup.strong { border-color: #fca5a5; background: var(--bad-soft); }

/* 弹窗 / 提示 / 加载 */
.mask { position: fixed; inset: 0; background: rgba(15,23,42,.45); display: flex; align-items: flex-start; justify-content: center; z-index: 50; padding: 40px 16px; overflow: auto; }
.modal { background: #fff; border-radius: 12px; width: 100%; max-width: 820px; padding: 20px 22px; box-shadow: 0 20px 50px rgba(0,0,0,.25); }
.modal .foot { display: flex; gap: 10px; justify-content: flex-end; margin-top: 16px; flex-wrap: wrap; }
#toasts { position: fixed; right: 20px; top: 20px; z-index: 100; display: flex; flex-direction: column; gap: 8px; max-width: 420px; }
.toast { padding: 10px 14px; border-radius: 8px; background: #1f2937; color: #fff; box-shadow: 0 6px 20px rgba(0,0,0,.2); white-space: pre-wrap; }
.toast.ok { background: var(--ok); } .toast.bad { background: var(--bad); } .toast.warn { background: #d97706; }
#busy { position: fixed; inset: 0; background: rgba(255,255,255,.6); z-index: 90; display: flex; align-items: center; justify-content: center; }
#busy[hidden] { display: none; }
.busy-box { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 22px 30px; display: flex; gap: 14px; align-items: center; box-shadow: 0 10px 30px rgba(0,0,0,.12); }
.spinner { width: 24px; height: 24px; border: 3px solid #dbeafe; border-top-color: var(--pri); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 860px) {
  body { flex-direction: column; }
  #side { width: 100%; height: auto; position: static; }
  nav { display: flex; flex-wrap: wrap; }
  nav a { border-left: none; padding: 8px 12px; }
  .ai-status { display: none; }
  main { padding: 16px; }
  .bi { grid-template-columns: 1fr; }
  .msg .bi > div + div { border-left: none; padding-left: 0; border-top: 1px dashed #d1d5db; padding-top: 8px; }
}