:root {
  --bg: #f4f6f9;
  --panel: #ffffff;
  --line: #dfe4ea;
  --text: #1f2a37;
  --muted: #6b7785;
  --accent: #1f6fd1;
  --accent-soft: #e7f0fc;
  --danger: #d0451b;
  --ok: #1a8f3c;
  --radius: 8px;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-size: 13px;
  color: var(--text);
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; overflow: hidden; background: var(--bg); }
button { font: inherit; color: inherit; cursor: pointer; }
input, select, textarea { font: inherit; color: inherit; }
.hidden { display: none !important; }

/* ---------------- 顶栏 */
#topbar {
  height: 46px; display: flex; align-items: center; gap: 6px; padding: 0 10px;
  background: var(--panel); border-bottom: 1px solid var(--line);
}
#topbar .brand { display: flex; align-items: center; gap: 6px; font-weight: 600; font-size: 15px; color: var(--accent); margin-right: 8px; white-space: nowrap; }
#topbar .group { display: flex; align-items: center; gap: 2px; padding: 0 6px; border-left: 1px solid var(--line); }
#topbar .group:first-of-type { border-left: none; }
#topbar .lbl { color: var(--muted); margin-right: 2px; }
#topbar button { background: none; border: 1px solid transparent; border-radius: 6px; padding: 5px 9px; white-space: nowrap; }
#topbar button:hover { background: var(--accent-soft); }
#topbar button.on { background: var(--accent-soft); border-color: #b9d2f3; color: var(--accent); }
#topbar button.accent { background: linear-gradient(135deg, #2f7be0, #7b4ddc); color: #fff; }
#topbar button.accent:hover { filter: brightness(1.08); }
#topbar .spacer { flex: 1; }
.dropdown { position: relative; }
.dd-menu { position: absolute; top: 100%; left: 0; z-index: 50; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 8px 24px rgba(0,0,0,.12); padding: 4px; min-width: 180px; display: none; }
.dropdown.open .dd-menu { display: block; }
.dd-menu button { display: block; width: 100%; text-align: left; }
.dd-menu.checks label { display: flex; align-items: center; gap: 8px; padding: 5px 8px; border-radius: 6px; cursor: pointer; white-space: nowrap; }
.dd-menu.checks label:hover { background: var(--accent-soft); }
.dd-menu .sep { border-top: 1px solid var(--line); margin: 4px 0; }
.dd-menu .row { display: flex; align-items: center; gap: 6px; padding: 4px 8px; }

/* ---------------- 主体布局 */
#main { position: absolute; top: 46px; bottom: 0; left: 0; right: 0; display: flex; }
#toolbar { width: 70px; background: var(--panel); border-right: 1px solid var(--line); display: flex; flex-direction: column; padding: 6px 4px; gap: 2px; overflow-y: auto; }
#toolbar .cat { display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 6px 2px; border: 1px solid transparent; border-radius: var(--radius); background: none; position: relative; }
#toolbar .cat svg { width: 26px; height: 26px; }
#toolbar .cat span { font-size: 11px; color: var(--muted); }
#toolbar .cat:hover { background: var(--accent-soft); }
#toolbar .cat.active { background: var(--accent-soft); border-color: #b9d2f3; }
#toolbar .cat.active span { color: var(--accent); font-weight: 600; }
#toolbar .cat::after { content: ""; position: absolute; right: 3px; bottom: 3px; border: 3px solid transparent; border-right-color: #9aa6b2; border-bottom-color: #9aa6b2; }
#toolbar .cat.single::after { display: none; }

#flyout { position: absolute; left: 72px; top: 6px; z-index: 40; width: 270px; max-height: calc(100% - 12px); overflow-y: auto; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 10px 30px rgba(0,0,0,.14); padding: 8px; }
#flyout h4 { margin: 4px 6px 6px; font-size: 13px; color: var(--muted); font-weight: 600; }
#flyout .sub { margin: 10px 6px 4px; font-size: 12px; color: var(--muted); border-top: 1px dashed var(--line); padding-top: 8px; }
#flyout .tool { display: flex; align-items: flex-start; gap: 8px; width: 100%; text-align: left; padding: 6px 8px; border: none; background: none; border-radius: 6px; }
#flyout .tool:hover { background: var(--accent-soft); }
#flyout .tool.active { background: var(--accent); color: #fff; }
#flyout .tool.active small { color: #dfeaff; }
#flyout .tool b { font-weight: 500; display: block; }
#flyout .tool small { color: var(--muted); display: block; font-size: 11px; margin-top: 1px; line-height: 1.35; }
#flyout .grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; }

#stage { flex: 1; position: relative; overflow: hidden; background: #fff; }
#cv { position: absolute; left: 0; top: 0; width: 100%; height: 100%; touch-action: none; display: block; }
#toolopts { position: absolute; top: 8px; left: 8px; right: 8px; z-index: 10; display: flex; flex-wrap: wrap; align-items: center; gap: 8px; pointer-events: none; }
#toolopts > * { pointer-events: auto; }
#toolopts .tname { background: var(--accent); color: #fff; border-radius: 6px; padding: 4px 10px; font-weight: 600; }
#toolopts .opt { display: flex; align-items: center; gap: 4px; background: rgba(255,255,255,.95); border: 1px solid var(--line); border-radius: 6px; padding: 3px 7px; }
#toolopts .opt input[type=number], #toolopts .opt input[type=text] { width: 64px; border: 1px solid var(--line); border-radius: 4px; padding: 2px 4px; }
#toolopts .opt select { border: 1px solid var(--line); border-radius: 4px; padding: 1px 2px; }
#toolopts .opt button { border: 1px solid var(--line); background: #fff; border-radius: 4px; padding: 1px 6px; }
#toolopts .opt button.on { background: var(--accent); color: #fff; border-color: var(--accent); }
#toolopts .wp { margin-left: auto; }

#status { position: absolute; left: 8px; bottom: 8px; right: 140px; z-index: 10; pointer-events: none; color: #334; background: rgba(255,255,255,.92); border: 1px solid var(--line); border-radius: 6px; padding: 5px 10px; font-size: 12.5px; display: inline-block; width: fit-content; max-width: calc(100% - 160px); }
#status b { color: var(--accent); }
#status .err { color: var(--danger); }
#zoomctl { position: absolute; right: 10px; bottom: 10px; display: flex; flex-direction: column; gap: 4px; z-index: 10; }

/* ---------------- 视角控制器 */
#viewctl { position: absolute; right: 10px; bottom: 82px; z-index: 11; width: 206px; background: rgba(255,255,255,.97); border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 6px 18px rgba(0,0,0,.1); user-select: none; -webkit-user-select: none; touch-action: none; }
#viewctl.closed { width: auto; }
#viewctl .vc-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; width: 100%; border: none; background: none; padding: 6px 10px; font-weight: 600; color: #3a4552; }
#viewctl .vc-caret { color: var(--muted); }
#viewctl .vc-body { padding: 0 8px 8px; }
#viewctl .vc-row { display: flex; align-items: center; justify-content: space-between; gap: 6px; }
#viewctl .vc-gizmo { width: 88px; height: 88px; cursor: pointer; touch-action: manipulation; }
#viewctl .vc-pad { width: 88px; height: 88px; border-radius: 50%; position: relative; background: radial-gradient(circle at 50% 50%, #f7faff, #dfe9f6); border: 1px solid #c3d3e8; touch-action: none; cursor: grab; }
#viewctl .vc-knob { position: absolute; left: 50%; top: 50%; width: 30px; height: 30px; border-radius: 50%; background: radial-gradient(circle at 35% 35%, #6aa8f0, #1f6fd1); box-shadow: 0 2px 6px rgba(0,0,0,.3); transform: translate(-50%, -50%); pointer-events: none; }
#viewctl .vc-arrow { position: absolute; font-size: 9px; color: #7d8ea3; pointer-events: none; }
#viewctl .vc-arrow.l { left: 4px; top: 50%; transform: translateY(-50%); }
#viewctl .vc-arrow.r { right: 4px; top: 50%; transform: translateY(-50%); }
#viewctl .vc-arrow.u { top: 3px; left: 50%; transform: translateX(-50%); }
#viewctl .vc-arrow.d { bottom: 3px; left: 50%; transform: translateX(-50%); }
#viewctl .vc-hint { color: var(--muted); font-size: 11px; margin: 4px 0; line-height: 1.4; }
#viewctl .vc-btns { display: flex; gap: 4px; margin-top: 4px; }
#viewctl .vc-btns button { flex: 1; border: 1px solid var(--line); background: #fff; border-radius: 6px; padding: 5px 0; touch-action: manipulation; }
#viewctl .vc-btns button:active { background: var(--accent-soft); }
#viewctl .vc-base { display: flex; align-items: center; gap: 6px; margin-top: 6px; font-size: 12px; color: #45505c; }
#viewctl .vc-base-sel { flex: 1; min-width: 0; border: 1px solid var(--line); border-radius: 5px; padding: 2px 4px; font-size: 12px; }
#viewctl .vc-adv { margin-top: 6px; border-top: 1px dashed var(--line); padding-top: 4px; }
#viewctl .vc-adv summary { cursor: pointer; color: var(--muted); font-size: 12px; }
#viewctl .vc-adv input[type=range] { width: 100%; }
#viewctl .vc-field { display: flex; align-items: center; gap: 4px; margin-top: 4px; }
#viewctl .vc-field label { flex: 1; font-size: 12px; }
#viewctl .vc-num { width: 64px; border: 1px solid var(--line); border-radius: 4px; padding: 2px 4px; }
#viewctl .vc-check { display: flex; gap: 6px; align-items: flex-start; font-size: 11.5px; color: #45505c; margin-top: 6px; line-height: 1.4; }
#zoomctl button { width: 30px; height: 30px; border-radius: 6px; border: 1px solid var(--line); background: #fff; font-size: 16px; }

#quickbar { position: absolute; left: 10px; right: 228px; margin: 0 auto; width: fit-content; bottom: 44px; z-index: 12; display: flex; flex-wrap: wrap; justify-content: center; gap: 4px; background: rgba(255,255,255,.97); border: 1px solid var(--line); border-radius: 10px; padding: 5px 6px; box-shadow: 0 6px 18px rgba(0,0,0,.1); }
#quickbar .ttl { color: var(--muted); padding: 4px 4px; font-size: 12px; white-space: nowrap; }
#quickbar button { border: 1px solid #d5dde7; background: #fff; border-radius: 6px; padding: 4px 9px; white-space: nowrap; }
#quickbar button:hover { background: var(--accent-soft); border-color: #b9d2f3; }
#quickbar button.danger { color: var(--danger); }

/* ---------------- 摇杆 */
#joystick { position: absolute; left: 10px; bottom: 44px; z-index: 12; width: 210px; background: rgba(255,255,255,.97); border: 1px solid var(--line); border-radius: 10px; padding: 8px; box-shadow: 0 6px 18px rgba(0,0,0,.1); }
#joystick .jt { font-weight: 600; margin-bottom: 4px; display: flex; justify-content: space-between; align-items: center; }
#joystick .jt button { border: none; background: none; color: var(--muted); }
#joystick .pad { width: 120px; height: 120px; border-radius: 50%; margin: 4px auto; position: relative; background: radial-gradient(circle at 50% 50%, #f7faff, #dfe9f6); border: 1px solid #c3d3e8; touch-action: none; }
#joystick .pad.h1 { height: 46px; border-radius: 23px; width: 160px; }
#joystick .knob { width: 36px; height: 36px; border-radius: 50%; position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); background: radial-gradient(circle at 35% 35%, #6aa8f0, #1f6fd1); box-shadow: 0 2px 6px rgba(0,0,0,.3); cursor: grab; }
#joystick .row { display: flex; align-items: center; gap: 6px; margin: 4px 0; flex-wrap: wrap; }
#joystick .row button { border: 1px solid var(--line); background: #fff; border-radius: 5px; padding: 2px 8px; }
#joystick .row button.on { background: var(--accent); color: #fff; }
#joystick .hint { color: var(--muted); font-size: 11px; }

/* ---------------- 右侧面板 */
#side { width: 330px; background: var(--panel); border-left: 1px solid var(--line); display: flex; flex-direction: column; min-height: 0; }
#side .tabs { display: flex; border-bottom: 1px solid var(--line); }
#side .tabs button { flex: 1; border: none; background: none; padding: 10px 0; color: var(--muted); border-bottom: 2px solid transparent; }
#side .tabs button.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }
#side .tabpanes { flex: 1; min-height: 0; position: relative; }
#side .pane { position: absolute; inset: 0; overflow-y: auto; padding: 10px 12px; display: none; }
#side .pane.active { display: block; }
#pane-ai.active { display: flex; flex-direction: column; padding: 0; }

.empty { color: var(--muted); padding: 14px 4px; line-height: 1.7; }
.sec { margin-bottom: 12px; }
.sec h5 { margin: 0 0 6px; font-size: 12px; color: var(--muted); font-weight: 600; display: flex; align-items: center; justify-content: space-between; }
.field { display: flex; align-items: center; gap: 6px; margin: 5px 0; }
.field > label { width: 92px; color: #4a5562; flex-shrink: 0; }
.field input[type=text], .field input[type=number], .field select { flex: 1; min-width: 0; border: 1px solid var(--line); border-radius: 5px; padding: 3px 6px; }
.field input[type=range] { flex: 1; min-width: 0; }
.field input[type=color] { width: 34px; height: 24px; border: 1px solid var(--line); border-radius: 4px; padding: 0; }
.field .num { width: 70px; flex: none !important; }
.field .unit { color: var(--muted); }
.btnrow { display: flex; flex-wrap: wrap; gap: 4px; margin: 6px 0; }
.btnrow button, .btn { border: 1px solid #d5dde7; background: #fff; border-radius: 6px; padding: 4px 9px; }
.btnrow button:hover, .btn:hover { background: var(--accent-soft); }
.btn.primary, .btnrow button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn.danger, .btnrow button.danger { color: var(--danger); }
.btnrow button.on { background: var(--accent); color: #fff; border-color: var(--accent); }
.info { background: #f6f8fb; border: 1px solid var(--line); border-radius: 6px; padding: 6px 8px; color: #45505c; line-height: 1.6; margin: 6px 0; }
.info.warn { background: #fff7e6; border-color: #f3d39b; color: #7a5200; }
.info.err { background: #fdeee9; border-color: #f2b9a6; color: #8a2b0e; }
.big { font-size: 20px; font-weight: 600; color: var(--ok); }
.exact { color: #8e44ad; font-weight: 600; }
.swatches { display: flex; gap: 3px; flex-wrap: wrap; }
.swatches span { width: 18px; height: 18px; border-radius: 4px; cursor: pointer; border: 1px solid rgba(0,0,0,.15); }

/* 对象列表 */
.olist .grp { margin: 8px 0 3px; color: var(--muted); font-size: 12px; font-weight: 600; }
.olist .item { display: flex; align-items: center; gap: 4px; padding: 3px 4px; border-radius: 5px; cursor: pointer; }
.olist .item:hover { background: #f2f5f9; }
.olist .item.sel { background: var(--accent-soft); }
.olist .item .nm { font-family: "Times New Roman", serif; font-style: italic; font-size: 15px; min-width: 34px; }
.olist .item .ds { flex: 1; color: var(--muted); font-size: 12px; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.olist .item .ds.err { color: var(--danger); }
.olist .item button { border: none; background: none; padding: 0 3px; color: #8793a0; font-size: 13px; }
.olist .item button:hover { color: var(--accent); }
.olist .item button.off { opacity: .35; }

/* 度量 */
.mcard { border: 1px solid var(--line); border-radius: 8px; padding: 7px 9px; margin-bottom: 6px; cursor: pointer; }
.mcard.sel { border-color: var(--accent); background: var(--accent-soft); }
.mcard .t { color: #45505c; font-family: "Times New Roman", serif; font-size: 14px; }
.mcard .v { font-size: 16px; font-weight: 600; color: var(--ok); }
.mcard .e { color: #8e44ad; }
.mcard .acts { display: flex; gap: 4px; margin-top: 4px; }
.mcard .acts button { border: 1px solid var(--line); background: #fff; border-radius: 4px; padding: 1px 7px; font-size: 12px; }

/* AI */
.ai-head { padding: 8px 10px; border-bottom: 1px solid var(--line); display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.ai-head .sw { display: flex; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.ai-head .sw button { border: none; background: #fff; padding: 4px 10px; }
.ai-head .sw button.on { background: var(--accent); color: #fff; }
.ai-head .model { color: var(--muted); font-size: 11px; }
.ai-head .btn.on { background: #e8f0fb; border-color: var(--accent); color: var(--accent); }
.ai-model { flex-basis: 100%; display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); }
.ai-model .model-sel { max-width: 190px; }
.ai-model .effort-sel { max-width: 130px; }
select.effort-sel:disabled { opacity: .5; }
.ai-chk { display: inline-flex; align-items: center; gap: 4px; font-size: 12px; white-space: nowrap; cursor: pointer; }
.ai-chk.off { color: var(--muted); opacity: .6; cursor: default; }
.ai-list { flex: 1; overflow-y: auto; padding: 8px 10px; display: flex; flex-direction: column; gap: 6px; }
.ai-list-head { display: flex; align-items: center; gap: 6px; margin-bottom: 4px; }
.ai-list .empty { color: var(--muted); text-align: center; padding: 30px 0; }
.ai-chat { position: relative; border: 1px solid var(--line); border-radius: 8px; padding: 6px 28px 6px 10px; cursor: pointer; background: #fff; }
.ai-chat:hover { border-color: var(--accent); }
.ai-chat.cur { border-color: var(--accent); background: #f2f7fe; }
.ai-chat-t { font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ai-chat-m { font-size: 11px; color: var(--muted); }
.ai-chat-x { position: absolute; right: 4px; top: 50%; transform: translateY(-50%); border: none; background: none; color: var(--muted); padding: 4px 6px; }
.ai-chat-x:hover { color: var(--danger); }
#pane-ai.chat-mode .msg.user { background: #2f8f5b; }
.ai-log { flex: 1; overflow-y: auto; padding: 10px; display: flex; flex-direction: column; gap: 8px; }
.msg { border-radius: 10px; padding: 8px 10px; line-height: 1.6; white-space: pre-wrap; word-break: break-word; }
.msg.user { background: var(--accent); color: #fff; align-self: flex-end; max-width: 90%; }
.msg.ai { background: #f3f5f8; border: 1px solid var(--line); }
.msg.sys { background: #fff7e6; border: 1px solid #f3d39b; color: #7a5200; font-size: 12px; }
.msg details { margin: 4px 0; }
.msg details summary { cursor: pointer; color: var(--muted); font-size: 12px; }
.msg pre { background: #fff; border: 1px solid var(--line); border-radius: 6px; padding: 6px; max-height: 220px; overflow: auto; font-size: 11.5px; white-space: pre-wrap; }
.msg .think { color: #6b7785; font-size: 12px; max-height: 200px; overflow: auto; }
.msg .res-ok { color: var(--ok); }
.msg .res-err { color: var(--danger); }
.ai-input { border-top: 1px solid var(--line); padding: 8px; }
.ai-input textarea { width: 100%; height: 76px; resize: vertical; border: 1px solid var(--line); border-radius: 8px; padding: 6px 8px; }
.ai-input .row { display: flex; gap: 6px; margin-top: 6px; align-items: center; }
.ai-input .row .grow { flex: 1; color: var(--muted); font-size: 11.5px; }
.ai-tips { display: flex; flex-wrap: wrap; gap: 4px; padding: 0 10px 8px; }
.ai-tips button { border: 1px solid var(--line); background: #fff; border-radius: 12px; padding: 2px 9px; font-size: 12px; color: #45505c; }

/* ---------------- 模态框 */
#modal { position: fixed; inset: 0; background: rgba(20,30,45,.35); z-index: 100; display: flex; align-items: center; justify-content: center; }
.modal-box { background: var(--panel); border-radius: 12px; box-shadow: 0 20px 60px rgba(0,0,0,.25); width: min(560px, calc(100vw - 30px)); max-height: calc(100vh - 40px); overflow-y: auto; padding: 16px 18px; }
.modal-box h3 { margin: 0 0 10px; font-size: 16px; }
.modal-box .foot { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; }
.modal-box .foot button { padding: 6px 16px; border-radius: 6px; border: 1px solid var(--line); background: #fff; }
.modal-box .foot button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.modal-box .field > label { width: 140px; }
.modal-box .help h4 { margin: 12px 0 4px; }
.modal-box .help p, .modal-box .help li { line-height: 1.7; color: #3a4552; }
.modal-box .help kbd { background: #f1f3f6; border: 1px solid #d5dbe2; border-radius: 4px; padding: 0 5px; font-size: 12px; }
.modal-box .note { color: var(--muted); font-size: 12px; line-height: 1.6; }

/* ---------------- 左上角浮动面板 */
#hud { position: absolute; left: 8px; top: 52px; z-index: 9; min-width: 170px; max-width: 320px; background: rgba(255,255,255,.96); border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 4px 14px rgba(0,0,0,.08); }
#hud .hud-head { display: flex; justify-content: space-between; align-items: center; padding: 4px 8px; cursor: move; color: #45505c; font-weight: 600; font-size: 12px; border-bottom: 1px solid var(--line); touch-action: none; user-select: none; }
#hud .hud-head button { border: none; background: none; color: var(--muted); }
#hud .hud-body { padding: 6px 8px; display: flex; flex-direction: column; gap: 5px; max-height: 60vh; overflow-y: auto; }
#hud .hud-item { position: relative; }
#hud .hud-x { position: absolute; right: -4px; top: -4px; border: none; background: #fff; color: #9aa6b2; font-size: 10px; border-radius: 50%; padding: 0 3px; display: none; }
#hud .hud-item:hover .hud-x { display: block; }
#hud .hud-text { font-family: "Times New Roman", "Cambria Math", serif; font-size: 15px; cursor: default; }
.cw-label { font-size: 12px; color: #3a4552; }
.cw-row { display: flex; align-items: center; gap: 4px; }
.cw-row input[type=range] { flex: 1; min-width: 70px; }
.cw-num { width: 64px; border: 1px solid var(--line); border-radius: 4px; padding: 1px 4px; }
.cw-play { padding: 1px 6px !important; }
.cw-button { display: block; width: 100%; text-align: left; border: 1px solid #c9d8ec; background: #f8fbff; border-radius: 7px; padding: 5px 9px; }
.cw-button:hover { background: var(--accent-soft); }
.cw-button b { color: #1f4f8f; }
.cw-button small { display: block; color: var(--muted); }
.cw-toggle { display: flex; align-items: center; gap: 6px; }
.cw-text { font-family: "Times New Roman", serif; font-size: 15px; }
.cw-err { color: var(--danger); font-size: 12px; }
.cc-card { border: 1px solid var(--line); border-radius: 8px; padding: 6px 8px; margin: 6px 0; }
.cc-tools { display: flex; align-items: center; gap: 2px; margin-bottom: 4px; }
.cc-tools button { border: none; background: none; color: #8793a0; padding: 0 4px; }
.cc-tools button.on { color: var(--accent); }
.cc-type { font-size: 11px; color: var(--muted); }
.pp-btn-row { display: flex; gap: 4px; align-items: stretch; }
.pp-btn-row .pp-btn { flex: 1; }
.pp-pin { border: 1px solid var(--line); background: #fff; border-radius: 6px; margin: 5px 0; padding: 0 6px; opacity: .45; }
.pp-pin.on { opacity: 1; border-color: var(--accent); }
.pp-pin.small { margin: 0 0 0 6px; padding: 0 4px; font-size: 11px; }
.ce-dlg .field > label { width: 80px; }
.ce-area { margin-top: 6px; }
.ce-arow { display: flex; gap: 6px; align-items: flex-start; border: 1px solid var(--line); border-radius: 6px; padding: 5px; margin: 4px 0; }
.ce-afields { flex: 1; display: flex; flex-wrap: wrap; gap: 4px; align-items: center; }
.ce-afields input, .ce-afields select, .ce-atype, .ce-param { border: 1px solid var(--line); border-radius: 4px; padding: 2px 4px; }
.ce-param { max-width: 250px; }
.dd-check { display: flex; align-items: center; gap: 6px; padding: 5px 8px; white-space: nowrap; cursor: pointer; }
#side .tabs button { padding: 10px 0; font-size: 12.5px; }

/* ---------------- 文字 */
.tx-area { width: 100%; border: 1px solid var(--line); border-radius: 6px; padding: 6px 8px; font-size: 15px; resize: vertical; }
.tx-preview { margin: 4px 0 8px; padding: 6px 8px; background: #f6f8fb; border-radius: 6px; color: #1f3f6f; font-family: "Times New Roman", serif; font-size: 15px; min-height: 22px; }
.tx-row { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin: 6px 0; }
.tx-row .tx-sel { flex: 1; min-width: 200px; border: 1px solid var(--line); border-radius: 5px; padding: 3px; }
.tx-row .tx-pts { width: 150px; border: 1px solid var(--line); border-radius: 5px; padding: 3px 6px; }
.tx-chk { display: inline-flex; align-items: center; gap: 4px; margin-right: 10px; }
.tx-menu { position: fixed; z-index: 150; background: #fff; border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 8px 24px rgba(0,0,0,.16); padding: 4px; min-width: 170px; }
.tx-menu-t { padding: 4px 8px; color: var(--muted); font-size: 12px; border-bottom: 1px solid var(--line); margin-bottom: 2px; font-family: "Times New Roman", serif; }
.tx-menu button { display: block; width: 100%; text-align: left; border: none; background: none; padding: 6px 10px; border-radius: 5px; }
.tx-menu button:hover { background: var(--accent-soft); }

/* ---------------- 模型下拉 */
.model-pick { display: inline-flex; gap: 4px; align-items: center; flex: 1; min-width: 0; }
.model-pick .model-sel { flex: 1; min-width: 0; border: 1px solid var(--line); border-radius: 5px; padding: 3px 4px; }
.model-pick .model-custom { width: 140px; border: 1px solid var(--line); border-radius: 5px; padding: 3px 6px; }
.pb-model-row .model-pick { flex: none; }
.pb-model-row .model-pick .model-sel { width: 230px; }

/* ---------------- 从题目新建 */
.modal-box.wide { width: min(880px, calc(100vw - 24px)); }
.pb-steps { color: var(--muted); margin-bottom: 8px; }
.pb-steps b { color: var(--accent); }
.pb-text { width: 100%; border: 1px solid var(--line); border-radius: 8px; padding: 8px; resize: vertical; line-height: 1.6; }
.pb-drop { margin-top: 8px; border: 2px dashed #c3d3e8; border-radius: 10px; padding: 14px; text-align: center; color: #45505c; cursor: pointer; background: #f8fbff; }
.pb-drop.over { border-color: var(--accent); background: var(--accent-soft); }
.pb-thumbs { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.pb-thumb { position: relative; border: 1px solid var(--line); border-radius: 6px; padding: 3px; background: #fff; text-align: center; font-size: 11px; color: var(--muted); }
.pb-thumb img { display: block; max-height: 110px; max-width: 200px; }
.pb-thumbs.small .pb-thumb img { max-height: 70px; max-width: 140px; }
.pb-thumb button { position: absolute; top: 2px; right: 2px; border: none; background: rgba(0,0,0,.55); color: #fff; border-radius: 4px; padding: 0 5px; }
.pb-model-row { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-top: 10px; padding: 8px; background: #f6f8fb; border: 1px solid var(--line); border-radius: 8px; }
.pb-model-row .pb-lbl { font-weight: 600; color: #45505c; margin-right: 4px; }
.pb-model-row input, .pb-model-row select { border: 1px solid var(--line); border-radius: 5px; padding: 3px 6px; }
.pb-model-row .pb-model { width: 170px; }
.pb-progress { margin-top: 8px; }
.pb-status { padding: 6px 10px; border-radius: 6px; background: var(--accent-soft); color: #1f4f8f; }
.pb-status.err { background: #fdeee9; color: #8a2b0e; }
.pb-status.ok { background: #e8f6ec; color: #1a6b33; }
.pb-think { max-height: 160px; overflow: auto; white-space: pre-wrap; font-size: 12px; color: var(--muted); }
.pb-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 12px; }
.pb-field { display: flex; flex-direction: column; gap: 3px; }
.pb-field.tall { grid-row: span 1; }
.pb-field:nth-child(2) { grid-column: 1 / -1; }
.pb-field label { font-weight: 600; color: #3a4552; font-size: 12.5px; }
.pb-field label small { font-weight: normal; color: var(--muted); margin-left: 6px; }
.pb-field textarea, .pb-field input { width: 100%; border: 1px solid var(--line); border-radius: 6px; padding: 5px 7px; resize: vertical; line-height: 1.55; }
.pb-fig { margin-top: 8px; }
.pb-check { display: flex; gap: 6px; align-items: center; margin-top: 6px; }
.pb-cards { display: flex; flex-direction: column; gap: 10px; }
.pb-card { display: flex; gap: 12px; align-items: center; text-align: left; border: 1px solid var(--line); background: #fff; border-radius: 10px; padding: 12px 14px; }
.pb-card:hover { border-color: #b9d2f3; background: var(--accent-soft); }
.pb-card-ic { font-size: 22px; width: 36px; text-align: center; color: var(--accent); }
.pb-card b { display: block; font-size: 14px; }
.pb-card small { color: var(--muted); line-height: 1.5; }
@media (max-width: 700px) { .pb-grid { grid-template-columns: 1fr; } }

/* ---------------- 题目控制面板 */
.pp-head { display: flex; align-items: center; gap: 6px; margin-bottom: 6px; font-size: 14px; }
.pp-head .btn { padding: 2px 8px; font-size: 12px; }
.pp-text { margin: 6px 0; border: 1px solid var(--line); border-radius: 8px; padding: 6px 8px; line-height: 1.6; white-space: pre-wrap; }
.pp-text summary { cursor: pointer; color: #45505c; font-weight: 600; white-space: normal; }
.pp-asks { margin-top: 4px; color: #1f4f8f; }
.pp-param { margin: 6px 0; }
.pp-plabel { font-size: 12.5px; color: #3a4552; }
.pp-plabel small { color: var(--muted); }
.pp-btn { display: block; width: 100%; text-align: left; border: 1px solid #c9d8ec; background: #f8fbff; border-radius: 8px; padding: 7px 10px; margin: 5px 0; }
.pp-btn:hover { background: var(--accent-soft); border-color: #9fc0ea; }
.pp-btn b { display: block; color: #1f4f8f; }
.pp-btn small { color: var(--muted); }
.pp-btn.danger { border-color: #f2b9a6; background: #fff6f3; }
.pp-btn.danger b { color: var(--danger); }
.pp-msg { border-color: #b9d2f3; background: var(--accent-soft); color: #1f3f6f; }
.pp-card { border: 1px solid var(--line); border-radius: 8px; padding: 7px 9px; margin: 6px 0; line-height: 1.7; }
.pp-card.ok { border-color: #a9dcb7; background: #f3fbf5; }
.pp-card.bad { border-color: #f2b9a6; background: #fff6f3; }
.pp-card.warn { border-color: #f3d39b; background: #fffaf0; }
.pp-card-h { display: flex; justify-content: space-between; align-items: center; }
.pp-badge { font-size: 12px; font-weight: 600; }
.pp-card.ok .pp-badge { color: var(--ok); }
.pp-card.bad .pp-badge { color: var(--danger); }
.pp-card.warn .pp-badge { color: #a06a00; }
.pp-ans { margin-top: 4px; }

#toast { position: fixed; left: 50%; top: 58px; transform: translateX(-50%); z-index: 200; display: flex; flex-direction: column; gap: 6px; align-items: center; pointer-events: none; }
#toast .t { background: #233142; color: #fff; padding: 7px 14px; border-radius: 8px; box-shadow: 0 6px 18px rgba(0,0,0,.2); max-width: 70vw; animation: fadein .15s; }
#toast .t.err { background: #b83a14; }
#toast .t.ok { background: #1a7d37; }
@keyframes fadein { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; } }

/* 右侧面板可收起；窄屏（平板 / 手机）时变成浮在画布上的抽屉 */
#side .tabs .side-close { display: none; flex: none; padding: 10px 12px; }
body.side-hidden #side { display: none; }
#topbar #btnPanel.on { color: var(--accent); }
@media (max-width: 1100px) {
  #side { width: 280px; }
  #topbar .lbl, #topbar .brand span { display: none; }
}
@media (max-width: 1000px) {
  #topbar { overflow-x: auto; scrollbar-width: none; }
  #topbar::-webkit-scrollbar { display: none; }
  #topbar .group, #topbar .brand { flex-shrink: 0; }
  #side { position: absolute; right: 0; top: 0; bottom: 0; z-index: 35; width: min(340px, 92vw); box-shadow: -8px 0 24px rgba(0,0,0,.15); }
  #side .tabs .side-close { display: block; }
}

/* 历史题目 */
.ph-list { display: flex; flex-direction: column; gap: 6px; margin-top: 8px; max-height: 60vh; overflow-y: auto; }
.ph-item { display: flex; align-items: center; gap: 6px; }
.ph-main { flex: 1; border: 1px solid var(--line); border-radius: 8px; padding: 6px 10px; cursor: pointer; background: #fff; display: flex; flex-direction: column; }
.ph-main:hover { border-color: var(--accent); background: #f2f7fe; }
.ph-main small { color: var(--muted); }
.help-dl { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 10px; margin-bottom: 10px; background: #f2f7fe; border: 1px solid #c9dcf5; border-radius: 8px; }
.adv-head { margin-top: 14px; color: var(--muted); font-size: 12px; cursor: default; user-select: none; }
.adv-body { margin-top: 6px; padding: 8px; border: 1px dashed var(--line); border-radius: 8px; }
/* 仅 APK：顶部给状态栏留出空间（网页版不会加 native 类） */
html.native body { padding-top: env(safe-area-inset-top, 0px); box-sizing: border-box; }

/* AI 回复的 Markdown */
.md > :first-child { margin-top: 0; }
.md > :last-child { margin-bottom: 0; }
.md p, .md ul, .md ol { margin: 0.35em 0; }
.md ul, .md ol { padding-left: 1.4em; }
.md h1, .md h2, .md h3, .md h4 { font-size: 1.05em; margin: 0.6em 0 0.3em; }
.md table { border-collapse: collapse; margin: 0.4em 0; font-size: 0.95em; }
.md th, .md td { border: 1px solid #cfd6de; padding: 2px 8px; }
.md code { background: rgba(127,127,127,.15); padding: 0 4px; border-radius: 3px; }
.md pre { background: rgba(127,127,127,.12); padding: 6px 8px; border-radius: 4px; overflow: auto; }
.md pre code { background: none; padding: 0; }
.md blockquote { margin: 0.4em 0; padding-left: 8px; border-left: 3px solid #cfd6de; color: #5d6b7a; }

/* 画布上的"下一层 / 多选"按钮条 */
#pickbar { position: absolute; z-index: 14; top: 46px; left: 50%; transform: translateX(-50%); display: flex; align-items: center; gap: 6px; background: rgba(255,255,255,.97); border: 1px solid var(--line); border-radius: 10px; padding: 4px 6px; box-shadow: 0 6px 18px rgba(0,0,0,.12); font-size: 13px; max-width: calc(100% - 16px); }
#pickbar.hidden { display: none; }
#pickbar button { border: 1px solid var(--line); background: #fff; border-radius: 7px; padding: 5px 10px; font-size: 13px; cursor: pointer; white-space: nowrap; }
#pickbar button.nl { border-color: var(--accent); color: var(--accent); font-weight: 600; }
#pickbar button.mt.on { background: var(--accent); color: #fff; border-color: var(--accent); }
#pickbar .lt { color: #445; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 260px; }
/* 长按 / 右键弹出的候选列表 */
.pickmenu { position: fixed; z-index: 1000; background: #fff; border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 10px 28px rgba(0,0,0,.18); padding: 4px; min-width: 180px; max-width: 320px; max-height: 60vh; overflow: auto; }
.pickmenu .pm-t { color: var(--muted); font-size: 12px; padding: 4px 8px; }
.pickmenu button { display: block; width: 100%; text-align: left; border: 0; background: none; padding: 8px 10px; border-radius: 6px; font-size: 14px; cursor: pointer; }
.pickmenu button:hover { background: #eef4fc; }
/* 多选时逐个列出的对象 */
.multi-list { max-height: 45vh; overflow: auto; border: 1px solid var(--line); border-radius: 8px; margin-top: 6px; }
.multi-list details { border-bottom: 1px solid var(--line); }
.multi-list details:last-child { border-bottom: 0; }
.multi-list summary { display: flex; align-items: center; gap: 6px; padding: 6px 8px; cursor: pointer; }
.multi-list summary .nm { flex: 1; }
.multi-list summary button { border: 0; background: none; cursor: pointer; color: var(--muted); padding: 0 4px; }
.multi-list .one { padding: 4px 8px 8px; }
.olist .item.nopick .nm { opacity: .5; }