:root{
  --bg:#f2f4f8;
  --panel:#ffffff;
  --line:#e3e7f0;
  --line-2:#eef1f7;
  --text:#1c2433;
  --text-2:#5b667c;
  --text-3:#93a0b8;
  --blue:#2f6bff;
  --blue-soft:#eaf1ff;
  --stage:#0a1020;
  --amber:#e8a33d;
  --amber-soft:#fff8e8;
  --radius:9px;
  --shadow:0 1px 2px rgba(20,32,60,.05), 0 8px 24px -12px rgba(20,32,60,.16);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;
  background:var(--bg);color:var(--text);
  font-size:13px;line-height:1.5;
  overflow:hidden;
  -webkit-font-smoothing:antialiased;
}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:none;cursor:pointer}
input,select{font-family:inherit;font-size:inherit;color:inherit}
::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-thumb{background:#cfd7e6;border-radius:9px;border:2px solid transparent;background-clip:content-box}
::-webkit-scrollbar-thumb:hover{background:#b6c1d6;background-clip:content-box}
::-webkit-scrollbar-track{background:transparent}

#app{height:100%}
.view{height:100%;display:none}
.view.active{display:flex;flex-direction:column}

/* ============ 首页 ============ */
.home{
  height:100%;overflow:auto;
  background:
    radial-gradient(1100px 520px at 12% -8%, #e2ecff 0%, rgba(226,236,255,0) 60%),
    radial-gradient(900px 480px at 100% 0%, #e8f7f1 0%, rgba(232,247,241,0) 55%),
    var(--bg);
  display:flex;flex-direction:column;
}
.home-top{
  display:flex;align-items:center;gap:12px;
  padding:22px 38px 0;
}
/* 首页左上角导航组：返回+前进，与 lab / builder 顶栏按钮同款同位 */
.home-nav{display:flex;gap:4px;margin-right:2px}
.home-logo{
  width:34px;height:34px;border-radius:9px;
  background:linear-gradient(140deg,#2f6bff,#5b8dff 60%,#38c5a8);
  display:grid;place-items:center;color:#fff;font-weight:700;font-size:15px;
  box-shadow:0 6px 16px -6px rgba(47,107,255,.7);
}
.home-title{font-size:16px;font-weight:650;letter-spacing:.2px}
.home-sub{font-size:12px;color:var(--text-3);margin-top:1px}
.home-body{
  flex:1;display:flex;flex-direction:column;justify-content:center;
  padding:0 38px 60px;max-width:1180px;width:100%;margin:0 auto;
}
/* 一级菜单：三项竖排。卡片内部改为「图标 + 文案 + 标签/箭头」三栏，
 * 竖排三行也放得下一屏，不必为了高度把说明删掉。 */
.entries{display:flex;flex-direction:column;gap:14px;max-width:980px}
.entry{
  background:var(--panel);border:1px solid var(--line);border-radius:14px;
  padding:18px 22px;text-align:left;cursor:pointer;
  box-shadow:var(--shadow);transition:transform .18s ease, box-shadow .18s ease, border-color .18s;
  position:relative;overflow:hidden;
  display:grid;grid-template-columns:48px minmax(0,1fr) 22px;align-items:center;gap:18px;
}
.entry:hover{transform:translateY(-2px);border-color:#c9d8ff;box-shadow:0 16px 40px -20px rgba(47,107,255,.55)}
.entry:active{transform:translateY(0)}
.entry-ico{
  width:48px;height:48px;border-radius:13px;display:grid;place-items:center;
  font-size:20px;margin:0;
}
.entry-ico svg{width:23px;height:23px}
.entry-1 .entry-ico{background:var(--blue-soft);color:var(--blue)}
.entry-2 .entry-ico{background:#e8f8f2;color:#12a37e}
.entry-3 .entry-ico{background:#f2eeff;color:#7a5cf0}
.entry-main{min-width:0}
.entry h3{font-size:17px;font-weight:660;letter-spacing:-.2px}
.entry .tagname{font-size:10.5px;color:var(--text-3);margin-top:2px;letter-spacing:.5px;text-transform:uppercase}
.entry p{color:var(--text-2);font-size:12.5px;margin-top:7px;line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.entry-side{display:flex;align-items:center;justify-self:end}
.entry .chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.chip{
  font-size:11px;color:var(--text-2);background:#f4f6fb;border:1px solid var(--line);
  padding:2px 8px;border-radius:6px;
}
.entry .go{position:static;color:#c3cee2;font-size:17px;transition:transform .18s,color .18s}
.entry .go svg{width:18px;height:18px;display:block}
.entry:hover .go{transform:translateX(3px);color:var(--blue)}
.home-foot{
  padding:0 38px 22px;color:var(--text-3);font-size:11.5px;
  display:flex;justify-content:space-between;max-width:1180px;width:100%;margin:0 auto;
}


/* ============ 首页操作组 / 帮助 ============ */
.home-actions{display:flex;align-items:center;gap:8px;margin-left:auto}
.cfg-box.help-box{width:min(860px,94vw);max-width:94vw;max-height:86vh;overflow:auto;padding:22px 24px}
.help-top{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
.help-lead{font-size:12.5px;color:var(--text-2);line-height:1.75;margin-top:6px;max-width:660px}
.help-sec{margin-top:18px}
.help-hd{display:flex;align-items:baseline;gap:8px;margin-bottom:8px}
.help-t{font-size:13px;font-weight:660;letter-spacing:-.1px}
.help-s{font-size:11px;color:var(--text-3)}
.help-table{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--panel);width:100%}
.help-row{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line-2)}
.help-row:first-child{border-top:none}
.help-table.three .help-row{grid-template-columns:170px minmax(0,1fr) minmax(0,1.15fr)}
.help-cell{padding:9px 12px;font-size:12px;line-height:1.65;color:var(--text-2);border-left:1px solid var(--line-2)}
.help-cell:first-child{border-left:none}
.help-cell.lead{color:var(--text);font-weight:620}
.help-two{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.help-p{font-size:12px;color:var(--text-2);line-height:1.75;margin-top:6px}
@media (max-width:760px){
  .help-two{grid-template-columns:1fr;gap:12px}
  .help-table.three .help-row{grid-template-columns:1fr}
  .help-cell{border-left:none;border-top:1px solid var(--line-2)}
  .help-cell:first-child{border-top:none}
}

/* ============ 我的情境 ============ */
.ms-wrap{flex:1;overflow:auto;padding:22px 38px 40px;width:100%;max-width:1180px;margin:0 auto}
.ms-hd{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:14px}
.ms-hd-ops{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.ms-h2{font-size:20px;font-weight:660;letter-spacing:-.3px}
.ms-sub{color:var(--text-2);font-size:12.5px;margin-top:5px}
.ms-tools{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.ms-search-wrap{position:relative;display:flex;align-items:center;min-width:240px;flex:0 1 320px}
.ms-search-ico{position:absolute;left:10px;display:grid;place-items:center;color:var(--text-3);pointer-events:none}
.ms-search-ico svg{width:14px;height:14px}
.ms-search{
  width:100%;border:1px solid var(--line);background:var(--panel);color:var(--text);
  border-radius:9px;padding:8px 11px 8px 30px;font-size:12.5px;outline:none;
}
.ms-search:focus{border-color:#b9cdfa;box-shadow:0 0 0 3px rgba(47,107,255,.12)}
.ms-groups{display:flex;gap:6px;flex-wrap:wrap}
.ms-group{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--text-2);
  border:1px solid var(--line);background:var(--panel);border-radius:999px;padding:5px 11px;
}
.ms-group:hover{border-color:#c9d8ff;color:var(--text)}
.ms-group.on{background:var(--blue-soft);border-color:#c9d8ff;color:var(--blue);font-weight:600}
.ms-group-n{font-size:11px;color:var(--text-3)}
.ms-group.on .ms-group-n{color:var(--blue)}
.ms-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(286px,1fr));gap:16px}
.ms-card{
  background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:hidden;
  box-shadow:var(--shadow);display:flex;flex-direction:column;cursor:pointer;
  transition:transform .18s ease, box-shadow .18s ease, border-color .18s;outline:none;
}
.ms-card:hover,.ms-card:focus-visible{transform:translateY(-2px);border-color:#c9d8ff;box-shadow:0 16px 40px -20px rgba(47,107,255,.55)}
.ms-thumb{position:relative;aspect-ratio:16/9;background:#f6f9fc;border-bottom:1px solid var(--line);overflow:hidden}
.ms-thumb svg{width:100%;height:100%;display:block}
.ms-thumb-empty{position:absolute;inset:0;display:grid;place-items:center;color:var(--text-3);font-size:12px;text-align:center;padding:0 16px}
.ms-info{padding:12px 14px 8px;flex:1;min-width:0}
.ms-t{font-size:14px;font-weight:620;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ms-t:hover{color:var(--blue)}
.ms-rename{
  width:100%;font-size:14px;font-weight:620;color:var(--text);background:var(--panel);
  border:1px solid #b9cdfa;border-radius:6px;padding:2px 6px;outline:none;
  box-shadow:0 0 0 3px rgba(47,107,255,.12);
}
.ms-meta{display:flex;flex-wrap:wrap;align-items:center;gap:6px;color:var(--text-3);font-size:11.5px;margin-top:5px}
.ms-meta .dot{color:#cbd4e4}
.ms-scene{
  margin-top:8px;color:var(--text-2);font-size:12px;line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.ms-ops{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:2px 14px 12px}
.ms-ops .btn{font-size:12px;padding:5px 11px}
.ms-del{width:30px;padding:0 !important;justify-content:center;color:var(--text-3)}
.ms-del:hover{color:#e0544d}
.ms-empty{
  background:var(--panel);border:1px dashed var(--line);border-radius:16px;
  padding:46px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:10px;
}
.ms-empty-ico{width:46px;height:46px;border-radius:12px;background:var(--blue-soft);color:var(--blue);display:grid;place-items:center}
.ms-empty-ico svg{width:22px;height:22px}
.ms-empty-t{font-size:15px;font-weight:640}
.ms-empty-s{color:var(--text-2);font-size:12.5px;max-width:420px;line-height:1.7}
.ms-empty-inline{padding:34px 20px;border-style:solid;background:transparent}



body.theme-dark .ms-thumb{background:#0f1626}
body.theme-dark .ms-card:hover{border-color:#3a5a99}
/* 深色下面的浅色胶囊/图标底会跳出来，统一压回深色系 */
body.theme-dark .chip{background:#1b2434;border-color:#2c3a50;color:#9fb2c9}
body.theme-dark .entry-1 .entry-ico{background:rgba(91,138,255,.16);color:#8aabff}
body.theme-dark .entry-2 .entry-ico{background:rgba(62,207,166,.14);color:#3ecfa6}
body.theme-dark .entry-3 .entry-ico{background:rgba(164,140,255,.16);color:#a48cff}
body.theme-dark .ms-empty{border-color:#2a3a58}

/* ============ 实验台 ============ */
.topbar{
  height:46px;flex:0 0 46px;background:var(--panel);border-bottom:1px solid var(--line);
  display:flex;align-items:center;padding:0 12px;gap:10px;
}
.tb-logo{
  width:24px;height:24px;border-radius:7px;flex:0 0 24px;
  background:linear-gradient(140deg,#2f6bff,#5b8dff 60%,#38c5a8);
  display:grid;place-items:center;color:#fff;font-size:11px;font-weight:700;
}
.tb-name{font-size:12.5px;font-weight:620;white-space:nowrap}
/* 顶栏左上角返回/前进键：仅图标，紧凑不挤占面包屑 */
.tb-back,.tb-fwd{width:28px;padding:0;justify-content:center;flex:0 0 28px}
.tb-back svg,.tb-fwd svg{width:14px;height:14px}
.btn:disabled{opacity:.35;cursor:default;pointer-events:none}
.tb-crumb{
  display:flex;align-items:center;gap:5px;color:var(--text-3);font-size:12px;
  padding-left:10px;margin-left:2px;border-left:1px solid var(--line);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.tb-crumb .sep{color:#cbd4e4}
.tb-crumb .cur{color:var(--text);font-weight:560}
.tb-right{margin-left:auto;display:flex;align-items:center;gap:6px;min-width:0}
.tb-sep{flex:0 0 1px;width:1px;height:16px;background:var(--line);margin:0 3px}
/* 实验台保留标题和常用操作，次要工具使用可用键盘操作的折叠菜单。 */
#view-lab .lab-title{display:block;min-width:0;flex:1;font-weight:600;color:var(--text)}
#view-lab .tb-right{flex-shrink:0}
.lab-more{position:relative}
.lab-more > summary{list-style:none}
.lab-more > summary::-webkit-details-marker{display:none}
.lab-more[open] > summary{background:var(--blue-soft);color:var(--blue)}
.lab-more-menu{
  position:absolute;right:0;top:calc(100% + 8px);z-index:40;min-width:200px;padding:6px;
  display:flex;flex-direction:column;gap:3px;background:var(--panel);border:1px solid var(--line);
  border-radius:10px;box-shadow:0 10px 30px rgba(10,20,50,.15);
}
.lab-more:not([open]) .lab-more-menu{display:none}
#view-lab .lab-more-menu .btn{width:100%;height:34px;justify-content:flex-start;padding:0 10px}
#view-lab .lab-more-menu .btn span{display:inline}
@media (max-width:1100px){
  #view-lab .tb-name{display:none}
  #view-lab .topbar{padding:0 8px;gap:8px}
  #view-lab .tb-right{gap:4px}
  #view-lab .tb-right > .btn{padding:0 8px}
}
@media (max-width:760px){
  #view-lab .tb-right > .btn{padding:0 7px}
  #view-lab .tb-right > .btn span{display:none}
}
.btn{
  height:28px;padding:0 11px;border-radius:7px;border:1px solid var(--line);
  background:#fff;color:var(--text-2);font-size:12px;display:inline-flex;align-items:center;gap:5px;
  transition:all .15s;white-space:nowrap;
}
.btn:hover{border-color:#c5d3ee;color:var(--text);background:#fbfcff}
.btn:active{transform:translateY(.5px)}
.btn.primary{background:var(--blue);border-color:var(--blue);color:#fff}
.btn.primary:hover{background:#2559e0;border-color:#2559e0;color:#fff}
.btn.ghost{border-color:transparent;background:transparent}
.btn.ghost:hover{background:#f2f5fb}
.btn.ghost.on{color:var(--blue);background:var(--blue-soft)}
.btn svg{width:13px;height:13px;flex:0 0 13px}
.btn.icon{padding:0 8px}

.lab-body{flex:1;display:flex;min-height:0}

/* 左：章节树 */
.side{
  width:212px;flex:0 0 212px;background:var(--panel);border-right:1px solid var(--line);
  display:flex;flex-direction:column;min-height:0;
}
.side-head{
  height:34px;flex:0 0 34px;display:flex;align-items:center;padding:0 12px;
  font-size:11px;color:var(--text-3);letter-spacing:.5px;
  border-bottom:1px solid var(--line-2);
}
.side-head b{color:var(--text-2);font-weight:600;font-size:11.5px;letter-spacing:0}
.tree-search{padding:2px 10px 8px;border-bottom:1px solid var(--line-2)}
.tree-search input{
  width:100%;height:26px;border:1px solid var(--line);border-radius:6px;padding:0 9px;
  font-size:11.5px;outline:none;background:#fbfcfe;color:var(--text);transition:border-color .15s,background .15s;
}
.tree-search input:focus{border-color:var(--blue);background:#fff}
.tree-search input::placeholder{color:#b6c1d5}
.hide{display:none !important}
.tree{flex:1;overflow-y:auto;padding:6px 6px 18px}
/* 收藏 / 最近使用：钉在目录上方，两组都可折叠、默认都折叠。
 * 收起时只剩两行标题（约 55px），比原来"收藏标题 + 最近使用 5 行"省掉一大块，
 * 把高度让给教材树；展开仍能看到完整列表，状态各自记在 localStorage。 */
.tree-quick{padding:5px 8px;border-bottom:1px solid var(--line-2)}
.tq-group + .tq-group{margin-top:1px}
.tq-h{
  display:flex;align-items:center;gap:5px;width:100%;
  margin:0;padding:3px 4px;
  font-size:11px;color:var(--text-3);letter-spacing:.3px;
  background:none;border:0;text-align:left;
}
button.tq-h{cursor:pointer;border-radius:6px}
button.tq-h:hover{color:var(--text-2);background:#f5f7fc}
.tq-caret{width:11px;height:11px;flex:0 0 11px;color:#bcc7d9;display:inline-flex;transition:transform .16s}
.tq-caret svg{width:11px;height:11px}
.tq-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tq-n{font-size:10px;opacity:.8;flex:0 0 auto}
.tq-group.collapsed .tq-caret{transform:rotate(-90deg)}
.tq-group.collapsed .tq-list{display:none}
.tq-item{
  display:flex;align-items:flex-start;gap:8px;padding:5px 8px 5px 18px;border-radius:7px;
  cursor:pointer;font-size:12px;color:var(--text-2);
}
.tq-item:hover{background:#f0f4ff;color:var(--text)}
.tq-item.on{background:var(--blue-soft);color:var(--blue);font-weight:600}
.tq-t{flex:1;min-width:0;white-space:normal;overflow-wrap:anywhere;line-height:1.5}
.tq-star{
  width:20px;height:20px;display:grid;place-items:center;flex:0 0 20px;
  color:var(--text-3);opacity:.5;border-radius:5px;
}
.tq-star svg{width:12px;height:12px}
.tq-star:hover{opacity:1;color:var(--amber);background:rgba(232,163,61,.12)}
.tq-star.on{opacity:1;color:var(--amber)}
.tq-empty{font-size:11px;color:var(--text-3);padding:7px 8px 9px 18px;line-height:1.55}
/* 「最近使用」分级展开的页脚入口：与条目同一竖线（18+10=28px），左「再展开」右「收起到」 */
.tq-more{display:flex;align-items:center;gap:5px;flex-wrap:wrap;padding:2px 8px 5px 18px}
.tq-mbtn{
  font-size:10.5px;line-height:1;color:var(--blue);background:none;border:0;
  padding:5px 6px;border-radius:6px;cursor:pointer;white-space:nowrap;
}
.tq-mbtn:hover{background:var(--blue-soft)}
.tq-mbtn.quiet{color:var(--text-3)}
.tq-mbtn.quiet:hover{color:var(--text-2);background:#f2f5fb}
body.theme-dark .tq-mbtn{color:#8fb4ff}
body.theme-dark .tq-mbtn:hover{background:#1a2742}
body.theme-dark .tq-mbtn.quiet{color:#64769a}
body.theme-dark .tq-mbtn.quiet:hover{color:#93a4c4;background:#16203a}
body.theme-dark .tq-item:hover{background:#1a2338;color:var(--text)}
body.theme-dark button.tq-h:hover{background:#16203a;color:var(--text-2)}
body.theme-dark .tq-caret{color:#5c6f92}
.tree-book{margin-bottom:2px}
.tree-book > .row{
  display:flex;align-items:center;gap:6px;padding:5px 8px;border-radius:6px;
  font-size:12.5px;font-weight:600;color:var(--text);cursor:pointer;user-select:none;
}
.tree-book > .row:hover{background:#f5f7fc}
.tree-book .caret{
  width:12px;height:12px;flex:0 0 12px;color:#a9b5c9;transition:transform .16s;
}
.tree-book.collapsed .caret{transform:rotate(-90deg)}
.tree-book .count{margin-left:auto;font-size:10.5px;color:#b6c1d5;font-weight:500}
.tree-children{padding-left:0;overflow:hidden}
.tree-book.collapsed .tree-children{display:none}
.tree-chap > .row{
  display:flex;align-items:flex-start;gap:6px;padding:4px 8px 4px 20px;border-radius:6px;
  font-size:12px;color:var(--text-2);cursor:pointer;user-select:none;
}
.tree-chap > .row:hover{color:var(--text);background:#f7f9fd}
.tree-chap .caret{width:11px;height:11px;flex:0 0 11px;margin-top:3px;color:#bcc7d9;transition:transform .16s}
.tree-chap-title{flex:1;min-width:0;white-space:normal;overflow-wrap:anywhere;line-height:1.5}
.tree-chap.collapsed .caret{transform:rotate(-90deg)}
.tree-chap.collapsed .tree-secs{display:none}
.tree-secs{}
.sec{
  display:grid;grid-template-columns:4px minmax(0,1fr) auto 18px;align-items:start;gap:4px;padding:5px 8px 5px 24px;border-radius:6px;
  font-size:12px;color:var(--text-2);cursor:pointer;line-height:1.5;
}
.sec-title{min-width:0;white-space:normal;overflow-wrap:anywhere}
.sec.locked .sec-title{grid-column:2/-1}
.sec .dot{width:4px;height:4px;border-radius:50%;background:#ccd6e8;margin-top:7px}
.sec:hover{background:#f7f9fd;color:var(--text)}
.sec.on{background:var(--blue-soft);color:var(--blue);font-weight:600}
.sec.on .dot{background:var(--blue)}
.sec.locked{color:#c0c9d9;cursor:default}
.sec.locked:hover{background:transparent;color:#c0c9d9}
.sec.locked .dot{background:#e3e8f2}
.sec .badge{
  margin-top:2px;white-space:nowrap;font-size:9.5px;color:#b3bfd3;border:1px solid #e6ebf4;
  padding:0 4px;border-radius:4px;line-height:14px;
}
/* 每节目录行末尾的收藏按钮：与 3D 徽标同排，逐项可点 */
.sec-star{
  width:18px;height:18px;flex:0 0 18px;display:grid;place-items:center;
  color:var(--text-3);opacity:.42;border-radius:5px;
}
.sec-star svg{width:12px;height:12px}
.sec-star:hover{opacity:1;color:var(--amber);background:rgba(232,163,61,.14)}
.sec-star.on{opacity:1;color:var(--amber)}
body.theme-dark .sec-star{color:#5c6f92}
body.theme-dark .sec-star:hover{background:rgba(234,176,85,.14)}
body.theme-dark .sec-star.on{color:var(--amber)}

/* 中：舞台 + 图表 */
.center{flex:1;display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--bg)}
.stage-wrap{
  flex:1.32;min-height:180px;position:relative;padding:10px 10px 0;display:flex;flex-direction:column;
}
.stage{
  flex:1;position:relative;border-radius:10px;overflow:hidden;
  background:radial-gradient(120% 100% at 50% 0%, #16213c 0%, #0a1020 55%, #070b15 100%);
  box-shadow:0 10px 30px -18px rgba(10,20,50,.55);
}
.stage canvas{display:block;width:100%;height:100%}
.stage.has-frame-comparison>canvas,.stage.has-frame-comparison>.iso-host{visibility:hidden!important;pointer-events:none!important}
.frame-comparison{position:absolute;inset:38px 8px 36px;display:flex;flex-direction:column;gap:6px;z-index:0;min-height:0}
.frame-comparison[hidden],.frame-view[hidden]{display:none}
.frame-comparison-caption{flex:none;text-align:center;font-size:10px;line-height:16px;color:#91a7ca;font-variant-numeric:tabular-nums}
.frame-comparison-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;flex:1;min-height:0}
.frame-view{position:relative;min-width:0;min-height:0;display:flex;flex-direction:column;overflow:hidden;border:1px solid rgba(125,155,205,.2);border-radius:8px;background:rgba(9,17,33,.25)}
.frame-view-heading{padding:7px 10px 4px;line-height:1.35;flex:none;z-index:2;pointer-events:none}
.frame-view-title{display:block;font-size:13px;color:var(--frame-accent,#c8d9f4)}
.frame-view-subtitle{display:block;color:#9aacc9;font-size:10px;margin-top:2px;min-height:14px}
.frame-view-scene{position:relative;flex:1;min-height:0;overflow:hidden;touch-action:none}
.frame-view-scene>canvas{position:absolute;inset:0}
.frame-view-scene .iso-host .iso-viewbar{bottom:6px;right:6px}
.stage.fs .frame-comparison{bottom:88px}
.stage.has-frame-comparison .stage-fsread{display:none!important}
@media(max-width:900px){
  .center.has-frame-comparison-column{overflow-y:auto;overflow-x:hidden}
  .center.has-frame-comparison-column .stage-wrap{flex:0 0 720px;min-height:720px}
  .center.has-frame-comparison-column .charts{flex:0 0 440px;min-height:440px}
  .stage .stage-tr{top:39px;left:8px;right:8px;justify-content:flex-end}
  .stage.has-frame-comparison .stage-tr .seg>button:nth-child(n+3){display:none}
  .frame-comparison{inset:76px 6px 34px;gap:3px}
  .frame-comparison-grid{grid-template-columns:1fr;grid-template-rows:1fr 1fr;gap:5px}
  .frame-comparison-caption{font-size:9px;line-height:14px;white-space:normal;overflow-wrap:anywhere}
  .frame-view-heading{padding:5px 8px 3px}.frame-view-title{font-size:12px}
  .frame-view-subtitle{font-size:10px;min-height:14px}
  .stage.fs .frame-comparison{bottom:108px}
}
.stage-hud{position:absolute;inset:0;pointer-events:none;font-size:11px;z-index:2}
.stage-regime{
  position:absolute;top:46px;left:50%;transform:translateX(-50%);width:max-content;max-width:calc(100% - 24px);
  padding:7px 12px;border:1px solid #4c8c81;border-radius:9px;background:rgba(12,20,38,.9);color:#bef2df;
  text-align:center;line-height:1.5;font-variant-numeric:tabular-nums;
}
.stage-regime[hidden]{display:none}
.stage-regime[data-tone="partial"],.stage-regime[data-tone="critical"]{border-color:#96783f;color:#ffe1a2}
.regime-title{font-size:13px;font-weight:650}
.regime-detail{font-size:11.5px;color:#c9d6f0}
/* 循环接缝淡出层：仅当首尾状态不连续时才短暂出现（复制末帧后淡出，盖住重定位） */
.stage-seam{position:absolute;inset:0;z-index:1;pointer-events:none;opacity:0}
.stage-seam-cv{display:block;width:100%;height:100%}
.stage-seam .iso-svg{width:100%;height:100%}
.stage-tl{
  position:absolute;left:12px;top:10px;color:#c9d6f0;
  font-variant-numeric:tabular-nums;letter-spacing:.2px;
  background:rgba(12,20,38,.55);backdrop-filter:blur(6px);
  border:1px solid rgba(120,150,200,.18);border-radius:6px;padding:3px 8px;
}
.stage-loadmeter{
  position:absolute;left:12px;top:43px;width:188px;padding:10px 12px;border-radius:9px;
  border:1px solid rgba(120,150,200,.2);background:rgba(12,20,38,.78);color:#dce7fa;
  backdrop-filter:blur(6px);pointer-events:none;font-variant-numeric:tabular-nums;
}
.stage-loadmeter[hidden]{display:none}
.load-phase{color:#a9b8d4;font-size:10.5px;line-height:1.4}
.load-value{display:flex;align-items:baseline;justify-content:space-between;gap:8px;margin:4px 0 9px;color:var(--load-color,#9db4d8)}
.load-state{font-size:18px;font-weight:700;line-height:1.25}
.load-ratio{font-size:11px;white-space:nowrap}
.load-row{display:flex;align-items:center;gap:8px;margin:5px 0;font-size:10px;color:#bdcce3}
.load-row>span:first-child{width:48px;flex:none}
.load-track{display:block;flex:1;height:7px;border-radius:3px;background:rgba(120,150,200,.12);overflow:hidden}
.load-track i{display:block;height:100%;border-radius:3px;background:var(--load-color,#9db4d8)}
.load-gravity .load-track i{background:#a2b5d3}
.load-caption{font-size:10px;color:#8fa2c6;margin-top:7px;line-height:1.4}
.stage-vectorpanel{
  position:absolute;left:12px;top:43px;width:238px;padding:10px 12px;border-radius:9px;
  border:1px solid rgba(120,150,200,.2);background:rgba(12,20,38,.82);color:#dce7fa;
  backdrop-filter:blur(6px);pointer-events:none;font-variant-numeric:tabular-nums;
}
.stage-vectorpanel[hidden],.vector-value[hidden],.vector-legend>span[hidden]{display:none}
.vector-title{display:block;font-size:12px;line-height:1.4;color:#edf3ff}
.vector-message{font-size:10px;line-height:1.45;color:#aebed9;margin-top:3px}
.vector-values{display:grid;grid-template-columns:1fr 1fr;gap:6px 10px;margin-top:8px}
.vector-value{min-width:0;font-size:10px;line-height:1.3}
.vector-value>span{display:block;color:#a1b3d0;margin-bottom:2px}
.vector-value>b{display:block;font-size:12px;font-weight:650;white-space:nowrap}
.vector-legend{display:flex;flex-wrap:wrap;gap:2px 9px;border-top:1px solid rgba(120,150,200,.17);margin-top:8px;padding-top:5px;font-size:10px;color:#bdcce3}
.vector-legend>span{display:inline-flex;align-items:center;gap:3px;white-space:nowrap}
.vector-legend i{font-style:normal;font-size:17px;font-weight:700;line-height:1}
.vector-footnote{font-size:9px;line-height:1.4;color:#8fa2c6;margin-top:5px}
.stage-vectorpanel[data-layout="motion-essentials"]{left:50%;transform:translateX(-50%);width:520px;max-width:calc(100% - 28px);padding:8px 12px}
.stage-vectorpanel[data-layout="motion-essentials"] .vector-values{grid-template-columns:repeat(3,1fr);margin-top:6px}
.stage-vectorpanel[data-layout="motion-essentials"] .vector-legend,
.stage-vectorpanel[data-layout="motion-essentials"] .vector-footnote{display:none}
@media(max-width:1460px){
  .stage-vectorpanel[data-layout="motion-essentials"]{width:360px;padding:7px 10px}
  .stage-vectorpanel[data-layout="motion-essentials"] .vector-message{display:none}
  .stage-vectorpanel[data-layout="motion-essentials"] .vector-value>span{font-size:9px;white-space:nowrap}
}
@media(max-width:1180px),(max-height:700px){
  .stage-vectorpanel[data-layout="motion-essentials"]{display:none}
}
@media(max-width:900px){
  .stage-loadmeter{width:158px;left:9px;padding:8px 9px}
  .load-state{font-size:16px}.load-ratio{font-size:10px}.load-caption{display:none}
  .stage-vectorpanel{width:204px;left:9px;padding:8px 9px}
  .vector-title{font-size:11px}.vector-value>b{font-size:11px}.vector-values{gap:5px 8px;margin-top:6px}
  .vector-footnote{display:none}
}
.stage-tr{position:absolute;right:10px;top:9px;display:flex;gap:4px;pointer-events:auto}
.stage-br{position:absolute;right:12px;bottom:12px;pointer-events:auto}
/* 示意图视角按钮与 SVG 宿主 */
.iso-btn.on{background:rgba(70,120,255,.85);border-color:transparent;color:#fff}
.iso-host{position:absolute;inset:0;overflow:hidden;z-index:0;touch-action:none;cursor:grab}
.iso-host.iso-drag{cursor:grabbing}
.iso-host .iso-canvas{position:absolute;inset:0}
.iso-host .iso-viewbar{position:absolute;right:90px;bottom:12px;display:flex;gap:4px;z-index:2}
.iso-host .iso-viewbtn{
  width:26px;height:26px;border-radius:7px;font-size:14px;line-height:1;
  background:rgba(14,22,40,.62);border:1px solid rgba(120,150,200,.2);color:#a9b8d4;
  backdrop-filter:blur(6px);transition:all .15s;cursor:pointer;
}
.iso-host .iso-viewbtn:hover{color:#e6eeff;background:rgba(90,130,200,.28)}
.iso-host .iso-viewbtn:active{transform:rotate(-40deg)}
.iso-host .iso-svg{width:100%;height:100%}
.seg{
  display:flex;background:rgba(14,22,40,.62);border:1px solid rgba(120,150,200,.2);
  border-radius:7px;overflow:hidden;backdrop-filter:blur(6px);
}
.seg button{
  font-size:11px;color:#a9b8d4;padding:3px 9px;transition:all .15s;
}
.seg button:hover{color:#e6eeff;background:rgba(90,130,200,.18)}
.seg button.on{background:rgba(70,120,255,.85);color:#fff}
.stage-bl{
  position:absolute;left:12px;bottom:10px;color:#7e8fb2;font-size:10.5px;
  display:flex;gap:10px;align-items:center;
}
.stage-bl .k{display:inline-flex;align-items:center;gap:4px}
.stage-bl i{width:12px;height:2px;border-radius:2px;display:inline-block}
.stage-tip{
  position:absolute;left:50%;bottom:12px;transform:translateX(-50%);
  color:#8fa2c6;font-size:10.5px;letter-spacing:.2px;opacity:.8;
}

/* 全屏观看 */
.fs-btn{
  display:flex;align-items:center;gap:4px;height:26px;padding:0 9px;border-radius:7px;
  background:rgba(14,22,40,.62);border:1px solid rgba(120,150,200,.2);color:#a9b8d4;
  font-size:11px;backdrop-filter:blur(6px);transition:all .15s;
}
.fs-btn:hover{color:#e6eeff;background:rgba(90,130,200,.28)}
.fs-btn svg{width:12px;height:12px;flex:0 0 12px}
.stage-fsread{display:none}

.stage.fs{position:fixed;inset:0;width:100%;height:100%;z-index:70;border-radius:0;box-shadow:none;background:#070b15}
.stage.fs .player{
  position:absolute;left:0;right:0;bottom:0;z-index:3;height:54px;background:rgba(10,17,32,.94);
  border-top:1px solid rgba(120,150,200,.16);color:#c9d6f0;padding:0 18px;gap:12px;
}
.stage.fs .stage-br,.stage.fs .iso-host .iso-viewbar{bottom:68px}
.stage.fs .pbtn{color:#a9b8d4}
.stage.fs .pbtn:hover{background:rgba(90,130,200,.2);color:#fff}
.stage.fs .track input[type=range]{background:rgba(120,150,200,.26)}
.stage.fs .tclock{color:#9db0d0}
.stage.fs .tspeed{color:#8697b8}
.stage.fs .tspeed select{background:rgba(18,27,46,.95);border-color:rgba(120,150,200,.28);color:#c9d6f0}
.stage.fs .stage-fullscreen{background:rgba(70,120,255,.85);border-color:transparent;color:#fff}
.stage.fs .stage-fullscreen:hover{background:rgba(90,138,255,.96)}
.stage.fs .stage-fsread{
  display:flex;align-items:center;gap:14px;position:absolute;left:12px;top:42px;
  background:rgba(12,20,38,.6);border:1px solid rgba(120,150,200,.18);
  border-radius:8px;padding:5px 11px;color:#8ea2c4;font-size:11px;backdrop-filter:blur(6px);
}
.stage-fsread .mb{display:flex;align-items:baseline;gap:6px}
.stage-fsread .mb .bv{
  color:#eaf1ff;font-size:19px;font-weight:640;letter-spacing:-.4px;
  font-variant-numeric:tabular-nums;
}
.stage-fsread .mb .bu{color:#8ea2c4;font-size:10.5px;font-style:normal}
.stage-fsread .mi{
  display:flex;align-items:baseline;gap:4px;padding-left:13px;
  border-left:1px solid rgba(120,150,200,.16);color:#7f92b4;
}
.stage-fsread .mi .v{
  color:#cfdcf4;font-size:13px;font-weight:620;font-variant-numeric:tabular-nums;
}
.stage-fsread .mi .u{color:#7f92b4;font-size:9.5px;font-style:normal}

/* 讲解条 */
.explain{
  margin:8px 10px 0;background:var(--amber-soft);border:1px solid #f2dfb6;
  border-radius:8px;padding:7px 11px;font-size:12px;color:#8a6520;line-height:1.7;
  display:flex;gap:8px;align-items:flex-start;min-height:34px;
}
.explain .tag{
  flex:0 0 auto;font-size:10.5px;font-weight:600;color:#b8862c;
  background:#fdefd2;border-radius:4px;padding:1px 6px;margin-top:1px;white-space:nowrap;
}
.explain .txt{flex:1}
.explain .txt em{font-style:normal;color:#c07a10;font-weight:600}

/* 图表 */
.charts{
  flex:.92;min-height:126px;padding:8px 10px 0;
  display:grid;gap:8px;grid-template-columns:repeat(4,1fr);
}
.chart-card{
  background:var(--panel);border:1px solid var(--line);border-radius:9px;
  padding:7px 9px 5px;display:flex;flex-direction:column;min-width:0;overflow:hidden;
}
.chart-card.chart-wide{grid-column:span 2}
.chart-card.chart-full{grid-column:1 / -1}
.chart-hd{display:flex;align-items:baseline;gap:6px;margin-bottom:2px;min-width:0;overflow:hidden}
.chart-hd .t{font-size:11.5px;font-weight:620;color:var(--text)}
.chart-hd .s{font-size:10px;color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0;flex:1}
.chart-hd .t{white-space:nowrap;flex:0 0 auto}
.chart-body{flex:1;position:relative;min-height:0}
.chart-body canvas{position:absolute;inset:0;width:100%;height:100%}
.chart-legend{
  display:flex;flex-wrap:wrap;gap:8px;margin-top:1px;min-height:13px;
}
.chart-legend .lg{display:flex;align-items:center;gap:4px;font-size:9.5px;color:var(--text-2)}
.chart-legend .lg i{width:9px;height:2px;border-radius:1px}
.chart-legend .lg i.dot{width:5px;height:5px;border-radius:50%;margin:0 2px}

/* 右：参数 + 读数 */
.right{
  width:308px;flex:0 0 308px;background:var(--panel);border-left:1px solid var(--line);
  display:flex;flex-direction:column;min-height:0;
}
.right-scroll{flex:1;overflow-y:auto;padding:10px 12px 16px}
.learning-goal{padding:0 0 10px;margin-bottom:12px;border-bottom:1px solid var(--line-2);font-size:11.5px;line-height:1.65;color:var(--text-2)}
.learning-goal[hidden]{display:none}
.grp{margin-bottom:13px}
.grp-hd{
  display:flex;align-items:center;gap:6px;font-size:11.5px;font-weight:640;
  color:var(--text);margin-bottom:9px;
}
.grp-hd .n{
  font-size:9.5px;font-weight:600;color:#9aa8c0;background:#f1f4fa;
  border-radius:4px;padding:0 5px;line-height:15px;
}
.grp-hd .rt{margin-left:auto;font-size:10.5px;color:#b3bfd3;font-weight:400}
.prow{margin-bottom:8px}
.prow-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:5px;gap:8px}
.prow-lb{font-size:11.5px;color:var(--text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.prow-lb sub{font-size:9px}
.prow-val{
  display:flex;align-items:baseline;gap:2px;flex:0 0 auto;
}
.prow-val input{
  width:52px;height:20px;text-align:right;border:1px solid var(--line);border-radius:5px;
  padding:0 4px;font-size:11.5px;font-variant-numeric:tabular-nums;background:#fbfcfe;
  outline:none;transition:border-color .15s;
}
.prow-val input:focus{border-color:var(--blue);background:#fff}
.prow-val .u{font-size:10px;color:var(--text-3);width:26px}
input[type=range]{
  -webkit-appearance:none;appearance:none;width:100%;height:3px;border-radius:3px;
  background:#e6ebf5;outline:none;cursor:pointer;display:block;
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:13px;height:13px;border-radius:50%;background:#fff;
  border:2px solid var(--blue);box-shadow:0 1px 3px rgba(30,60,140,.28);cursor:pointer;
  transition:transform .12s;
}
input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.14)}
input[type=range]:active::-webkit-slider-thumb{transform:scale(1.05)}

.chks{display:flex;flex-direction:column;gap:7px}
.chk{display:flex;align-items:center;gap:7px;font-size:11.5px;color:var(--text-2);cursor:pointer;user-select:none}
.chk input{
  appearance:none;-webkit-appearance:none;width:13px;height:13px;border:1.5px solid #ccd6e8;
  border-radius:4px;background:#fff;cursor:pointer;position:relative;flex:0 0 13px;transition:all .14s;
}
.chk input:checked{background:var(--blue);border-color:var(--blue)}
.chk input:checked::after{
  content:"";position:absolute;left:3.5px;top:1px;width:4px;height:7px;
  border:solid #fff;border-width:0 1.8px 1.8px 0;transform:rotate(42deg);
}
.chk:hover{color:var(--text)}

/* 读数 */
.metric-big{
  background:linear-gradient(180deg,#f8faff,#f3f6fd);border:1px solid #e6ecf9;border-radius:9px;
  padding:6px 10px;margin-bottom:7px;
}
.metric-big .lb{font-size:10.5px;color:var(--text-3);letter-spacing:.2px}
.metric-big .v{
  font-size:21px;font-weight:660;color:#2453c8;letter-spacing:-.5px;line-height:1.24;
  font-variant-numeric:tabular-nums;
}
.metric-big .v .u{font-size:11px;font-weight:500;color:#8fa3cb;margin-left:3px;letter-spacing:0}
.metric-big .f{font-size:9.5px;color:#a8b6cf;margin-top:1px}

.mgrid{display:grid;grid-template-columns:1fr 1fr;gap:5px}
.metric{
  border:1px solid var(--line-2);border-radius:7px;padding:5px 7px;background:#fcfdff;min-width:0;
}
.metric .lb{font-size:10px;color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.metric .v{
  font-size:12.5px;font-weight:620;color:var(--text);font-variant-numeric:tabular-nums;
  letter-spacing:-.2px;white-space:nowrap;
}
.metric .v .u{font-size:9.5px;font-weight:500;color:var(--text-3);margin-left:2px}
.metric .f{font-size:9px;color:#b3bfd3;margin-top:1px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.metric.hl{border-color:#d7e3ff;background:#f7faff}
.metric.hl .v{color:#2453c8}

/* 播放条 */
.player{
  min-height:54px;height:54px;flex:0 0 54px;background:var(--panel);border-top:1px solid var(--line);
  display:flex;align-items:center;gap:10px;padding:0 12px;
}
.pbtn{
  width:28px;height:28px;border-radius:7px;display:grid;place-items:center;
  color:var(--text-2);transition:all .15s;flex:0 0 28px;
}
.pbtn:hover{background:#f1f4fa;color:var(--text)}
.pbtn.main{background:var(--blue);color:#fff;width:30px;height:30px;flex:0 0 30px}
.pbtn.main:hover{background:#2559e0;color:#fff}
.pbtn svg{width:14px;height:14px}
.track{flex:1;height:100%;display:flex;align-items:center;position:relative;min-width:60px}
.track input[type=range]{height:3px}
.track input[type=range]::-webkit-slider-thumb{width:11px;height:11px;border-width:2px;background:var(--blue);border-color:#fff;box-shadow:0 0 0 1px var(--blue)}
.tclock{
  font-size:11.5px;color:var(--text-2);font-variant-numeric:tabular-nums;
  min-width:92px;text-align:right;letter-spacing:.2px;
}
.tspeed{display:flex;align-items:center;gap:5px;color:var(--text-3);font-size:10.5px}
.tspeed select{
  border:1px solid var(--line);border-radius:6px;background:#fff;padding:2px 4px;font-size:11px;
  color:var(--text-2);outline:none;cursor:pointer;
}

/* 弹窗 */
.modal-mask{
  position:fixed;inset:0;background:rgba(16,24,44,.42);backdrop-filter:blur(2px);
  display:none;place-items:center;z-index:80;padding:24px;
}
.modal-mask.on{display:grid}
.modal{
  background:#fff;border-radius:12px;width:min(760px,100%);max-height:86vh;display:flex;flex-direction:column;
  box-shadow:0 24px 70px -20px rgba(10,20,50,.5);overflow:hidden;
}
.modal.narrow{width:min(520px,100%)}
.modal-hd{
  height:46px;flex:0 0 46px;display:flex;align-items:center;gap:8px;padding:0 16px;
  border-bottom:1px solid var(--line);
}
.modal-hd .t{font-size:13.5px;font-weight:640}
.modal-hd .x{margin-left:auto;width:26px;height:26px;border-radius:6px;display:grid;place-items:center;color:var(--text-3)}
.modal-hd .x:hover{background:#f2f5fb;color:var(--text)}
.modal-bd{flex:1;overflow:auto;padding:16px 18px 22px}
.modal-ft{
  padding:10px 16px;border-top:1px solid var(--line);display:flex;gap:8px;justify-content:flex-end;
  align-items:center;
}
.modal-ft .note{margin-right:auto;font-size:11px;color:var(--text-3)}

.formula{
  display:flex;align-items:center;gap:12px;padding:9px 11px;border-radius:8px;
  border:1px solid var(--line-2);margin-bottom:8px;background:#fcfdff;
}
.formula .fx{
  font-family:"Cambria Math","Latin Modern Math",Georgia,serif;font-size:15px;
  color:#1b3a7a;min-width:170px;font-variant-numeric:tabular-nums;
}
.formula .fx sup,.formula .fx sub{font-size:.68em}
.formula .fx i{font-style:italic}
.formula .nt{font-size:11px;color:var(--text-2);line-height:1.6}

table.dtable{width:100%;border-collapse:collapse;font-size:11.5px;font-variant-numeric:tabular-nums}
table.dtable th{
  position:sticky;top:0;background:#f7f9fd;color:var(--text-2);font-weight:600;
  padding:6px 8px;text-align:right;border-bottom:1px solid var(--line);white-space:nowrap;font-size:11px;
}
table.dtable th:first-child{text-align:left}
table.dtable td{padding:5px 8px;text-align:right;border-bottom:1px solid #f4f6fb;color:var(--text)}
table.dtable td:first-child{text-align:left;color:var(--text-2)}
table.dtable tbody tr:hover{background:#f8fbff}
table.dtable tr.mark td{background:#fff8e6}

.verify-row{
  display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:7px;
  border:1px solid var(--line-2);margin-bottom:7px;font-size:11.5px;background:#fcfdff;
}
.verify-row .nm{color:var(--text-2);min-width:120px}
.verify-row .calc{font-variant-numeric:tabular-nums;color:var(--text)}
.verify-row .eq{color:#c3cee2}
.verify-row .sim{font-variant-numeric:tabular-nums;font-weight:600;color:#2453c8}
.verify-row .ok{margin-left:auto;color:#12a37e;font-size:11px;white-space:nowrap}
.verify-row.ok-row{border-color:#dff0e8;background:#f7fdfa}

.toast{
  position:fixed;left:50%;bottom:64px;transform:translateX(-50%) translateY(10px);
  background:rgba(22,32,56,.94);color:#eaf1ff;font-size:12px;padding:7px 14px;border-radius:8px;
  opacity:0;pointer-events:none;transition:all .22s;z-index:120;box-shadow:0 10px 30px -12px rgba(0,0,0,.5);
}
.toast.on{opacity:1;transform:translateX(-50%) translateY(0)}

/* ============ 情境题开发 ============ */
.builder{height:100%;display:flex;flex-direction:column;background:var(--bg)}
.bd-body{flex:1;display:flex;min-height:0;gap:0}
.bd-left{
  width:52%;min-width:0;display:flex;flex-direction:column;padding:12px 12px 14px 16px;gap:10px;overflow:auto;
}
.bd-right{
  flex:1;min-width:0;border-left:1px solid var(--line);background:var(--panel);
  display:flex;flex-direction:column;min-height:0;
}
.card{background:var(--panel);border:1px solid var(--line);border-radius:11px;padding:14px 15px;box-shadow:var(--shadow)}
.card-hd{display:flex;align-items:center;gap:8px;margin-bottom:11px}
.card-hd .t{font-size:13px;font-weight:650}
.card-hd .s{font-size:11px;color:var(--text-3)}
.card-hd .step{
  width:18px;height:18px;border-radius:50%;background:var(--blue-soft);color:var(--blue);
  font-size:10.5px;font-weight:700;display:grid;place-items:center;
}
textarea.scene{
  width:100%;height:106px;resize:vertical;border:1px solid var(--line);border-radius:8px;
  padding:10px 11px;font-size:12.5px;line-height:1.75;outline:none;background:#fcfdff;
  transition:border-color .15s,background .15s;font-family:inherit;
}
textarea.scene:focus{border-color:var(--blue);background:#fff}
.scene-meta{display:flex;align-items:center;gap:8px;margin-top:7px;flex-wrap:wrap}
.scene-meta .lbl{font-size:11.5px;color:var(--text-3)}
.mini-sel{
  height:26px;border:1px solid var(--line);border-radius:6px;background:#fff;padding:0 7px;
  font-size:11.5px;color:var(--text-2);outline:none;cursor:pointer;
}
.tool-row{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.tbtn{height:28px;padding:0 11px;border:1px solid var(--line);border-radius:7px;background:#fff;
  font-size:11.5px;color:var(--text-2);display:inline-flex;align-items:center;gap:5px;transition:all .15s;text-decoration:none;cursor:pointer}
.tbtn:hover{border-color:#c5d3ee;color:var(--text);background:#fbfcff}
.tbtn.primary{color:#fff;border-color:var(--blue);background:var(--blue);font-weight:560}
.tbtn.primary:hover{background:#2559e0;border-color:#2559e0;color:#fff}
.tbtn.link{color:#2f6bff;border-color:#d8e5ff;background:#f7faff}
.tbtn.link:hover{background:#eef4ff}
.tool-sep{width:1px;height:18px;background:var(--line);margin:0 3px}
.examples{display:flex;flex-direction:column;gap:6px;margin-top:11px}
.ex{
  text-align:left;font-size:11.5px;color:var(--text-2);background:#f8fafd;border:1px solid var(--line-2);
  border-radius:7px;padding:7px 10px;line-height:1.6;transition:all .15s;
}
.ex:hover{background:#f1f6ff;border-color:#cfdcfa;color:var(--text)}
.ex b{color:var(--blue);font-weight:600}
.bd-actions{display:flex;gap:8px;align-items:center;margin-top:10px}
.bd-actions .hint{font-size:11px;color:var(--text-3);margin-left:auto}

.gen-head{padding:12px 14px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:8px}
.gen-head .t{font-size:12.5px;font-weight:640}
.gen-head .rt{margin-left:auto;font-size:11px;color:var(--text-3)}
.gen-body{flex:1;overflow:auto;padding:14px}
.empty{
  height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;
  color:var(--text-3);font-size:12px;gap:10px;text-align:center;padding:30px;
}
.empty .ico{font-size:30px;opacity:.45}
.kv{display:flex;flex-direction:column;gap:7px}
.kv .row{display:flex;gap:10px;font-size:11.5px;align-items:baseline}
.kv .k{color:var(--text-3);width:76px;flex:0 0 76px}
.kv .val{color:var(--text);font-weight:550;flex:1;word-break:break-all}
.parm-tbl{width:100%;border-collapse:collapse;font-size:11.5px;margin-top:6px}
.parm-tbl th{text-align:left;color:var(--text-3);font-weight:500;padding:5px 6px;border-bottom:1px solid var(--line-2);font-size:10.5px}
.parm-tbl td{padding:6px;border-bottom:1px solid #f5f7fb}
.parm-tbl td.v{font-variant-numeric:tabular-nums;font-weight:600;color:#2453c8}
.parm-tbl td.src{font-size:10px;color:var(--text-3)}
.tag-ok{background:#eafaf3;color:#12a37e;border:1px solid #cdf0e3;border-radius:5px;padding:1px 6px;font-size:10px}
.tag-warn{background:#fff7e8;color:#c98a1a;border:1px solid #f5e3bd;border-radius:5px;padding:1px 6px;font-size:10px}
.tag-info{background:#eef4ff;color:#2f6bff;border:1px solid #d8e5ff;border-radius:5px;padding:1px 6px;font-size:10px}
.gen-log{
  background:#0e1526;border-radius:8px;padding:10px 12px;font-family:ui-monospace,Consolas,monospace;
  font-size:10.5px;line-height:1.85;color:#8fa8cc;max-height:170px;overflow:auto;margin-top:10px;
}
.gen-log .ok{color:#4ad6a4}
.gen-log .warn{color:#e8b559}
.gen-log .dim{color:#5c6f92}
.spin{
  width:13px;height:13px;border:2px solid #d8e4ff;border-top-color:var(--blue);border-radius:50%;
  animation:sp .7s linear infinite;
}
@keyframes sp{to{transform:rotate(360deg)}}

@media (max-width:1460px){
  .chart-hd .s{display:none}
}
@media (max-width:1180px){
  .charts{grid-template-columns:repeat(2,1fr)}
  .charts.has-focus-charts{min-height:352px;grid-template-rows:1fr 1fr;flex:1.3}
  .charts.has-full-chart{min-height:176px;grid-template-rows:1fr}
  .center:has(>.charts.has-focus-charts){overflow-y:auto}
  .right{width:280px;flex-basis:280px}
  .side{width:190px;flex-basis:190px}
}

/* ============ 聊天式输入框（composer） ============ */
.composer{
  background:var(--panel);border:1px solid var(--line);border-radius:18px;
  padding:12px 14px 8px;box-shadow:var(--shadow);
  transition:border-color .18s, box-shadow .18s;
}
.composer:focus-within{border-color:#b9cdf5;box-shadow:0 0 0 3px rgba(47,107,255,.09), var(--shadow)}
.composer-ta{
  width:100%;border:none;outline:none;resize:none;background:transparent;
  font-family:inherit;font-size:13.5px;line-height:1.75;color:var(--text);
  min-height:62px;max-height:240px;display:block;padding:0;
}
.composer-ta::placeholder{color:#b3bfd3}
.composer-bar{display:flex;align-items:center;gap:4px;margin-top:6px;flex-wrap:nowrap}
.cb-ic{
  width:28px;height:28px;flex:0 0 28px;border-radius:8px;display:grid;place-items:center;
  color:#8b98ad;transition:all .15s;
}
.cb-ic:hover{background:#f1f4fa;color:var(--text)}
.cb-ic svg{width:15px;height:15px}
.cb-chip{
  height:28px;display:inline-flex;align-items:center;gap:5px;padding:0 8px;border-radius:8px;
  font-size:12px;color:var(--text-2);transition:all .15s;white-space:nowrap;
}
.cb-chip:hover{background:#f1f4fa;color:var(--text)}
.cb-chip svg{width:13px;height:13px;flex:0 0 13px;color:#9aa8c0}
.cb-chip .cv{font-variant-numeric:tabular-nums}
.cb-chip .arw{font-size:9px;color:#b6c1d5;margin-left:1px}
/* 「情境目录」：和「难度」并排的同款 chip，但它是"打开面板"不是"选值"——
 * 所以不带 ▾、没有选中态，图标用主色提示"这里有东西可挑"。
 * 窄屏先让文字缩（可收缩 + 省略号），再窄就只留图标；
 * 它的 aria-label 固定是「情境目录」，文字被隐藏时读屏照样有名字。 */
.cb-chip.scene{color:#3f5a86;background:#f5f8ff;min-width:0;flex:0 1 auto}
.cb-chip.scene:hover{color:#1d5fd6;background:#eaf2ff}
.cb-chip.scene svg{color:#2f6bff}
.cb-chip.scene .lbl{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
body.theme-dark .cb-chip.scene{color:#a9c3e8;background:#182238}
body.theme-dark .cb-chip.scene:hover{color:#cfe0ff;background:#1c2a44}
body.theme-dark .cb-chip.scene svg{color:#7ea8f0}
@media (max-width:420px){
  .cb-chip.scene .lbl{display:none}
  .cb-chip.scene{width:28px;padding:0;justify-content:center;flex:0 0 28px}
}
.cb-right{margin-left:auto;display:flex;align-items:center;gap:4px;flex-shrink:0}
.cb-send{
  width:30px;height:30px;flex:0 0 30px;border-radius:50%;display:grid;place-items:center;
  background:#e6eaf3;color:#fff;transition:all .18s;
}
.cb-send svg{width:15px;height:15px}
.cb-send.on{background:var(--blue);box-shadow:0 3px 10px -3px rgba(47,107,255,.6)}
.cb-send.on:hover{background:#2559e0}
.cb-send.on:active{transform:scale(.94)}
.cb-menu{
  position:absolute;z-index:60;background:#fff;border:1px solid var(--line);border-radius:10px;
  box-shadow:0 12px 32px -10px rgba(20,32,60,.28);padding:5px;min-width:190px;display:none;
}
.cb-menu.on{display:block}
.cb-mi{
  display:flex;align-items:center;gap:8px;width:100%;text-align:left;
  padding:7px 9px;border-radius:7px;font-size:12px;color:var(--text-2);transition:all .12s;
}
.cb-mi:hover{background:#f4f7fd;color:var(--text)}
.cb-mi .k{
  font-size:10px;color:#9aa8c0;background:#f2f5fb;border-radius:4px;padding:0 5px;line-height:15px;flex:0 0 auto;
}
.cb-mi.on{color:var(--blue);font-weight:560}
.cb-mi .txt{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.academic-level-menu{width:min(360px,calc(100vw - 20px));min-width:0;max-height:calc(100vh - 100px);overflow-y:auto}
.academic-level-heading{padding:8px 10px 7px;font-size:12px;font-weight:600;color:var(--text);border-bottom:1px solid var(--line);margin-bottom:3px}
.academic-level-menu .cb-mi{display:grid;grid-template-columns:auto 1fr;gap:4px 12px;padding:10px;white-space:normal}
.academic-level-menu .cb-mi .txt{overflow:visible;font-weight:600}
.academic-level-menu .cb-mi .k{justify-self:end;background:none;padding:0;color:var(--text-2);font-size:11px}
.academic-level-description{grid-column:1/-1;font-size:11px;line-height:1.65;color:var(--text-2);font-weight:400}
.academic-level-note{margin-top:3px;padding:8px 10px 5px;border-top:1px solid var(--line);font-size:10px;line-height:1.6;color:var(--text-3,var(--text-2))}
@media(max-width:480px){.academic-level-chip .chip-label{display:none}}
/* 菜单项左侧图标 + 分隔线 + 危险项（删除）：会话行「⋯」菜单复用 */
.cb-mi .cb-ic{flex:none;width:14px;height:14px;display:inline-flex;align-items:center;justify-content:center;color:#8b98b0}
.cb-mi .cb-ic svg{width:12px;height:12px}
.cb-mi:hover .cb-ic{color:var(--blue)}
.cb-mi.danger{color:#d84c46}
.cb-mi.danger .cb-ic{color:inherit}
.cb-mi.danger:hover{background:#fdecea;color:#d84c46}
.cb-sep{height:1px;margin:4px 6px;background:var(--line-2)}

/* ============ 装置图视图（Anatomy 等距 SVG） ============ */
.iso-panel{position:absolute;inset:0;display:none;align-items:center;justify-content:center;padding:6px 10px}
.iso-panel.on{display:flex}
.iso-svg-host{width:100%;height:100%;display:flex;align-items:center;justify-content:center}
.iso-svg-host .iso-svg{width:100%;height:100%}
.iso-readout{
  position:absolute;right:10px;bottom:10px;min-width:170px;max-width:250px;
  background:rgba(10,16,32,.72);border:1px solid rgba(120,150,200,.18);border-radius:9px;
  backdrop-filter:blur(6px);padding:7px 10px;
}
.iso-readout .ir-big{margin-bottom:5px}
.iso-readout .lb{display:block;font-size:9.5px;color:#8fa2c6;letter-spacing:.2px}
.iso-readout .v{font-size:16px;font-weight:650;color:#e8f0ff;font-variant-numeric:tabular-nums;letter-spacing:-.3px}
.iso-readout .v i{font-style:normal;font-size:9.5px;font-weight:500;color:#8fa2c6;margin-left:3px}
.iso-readout .ir-grid{display:grid;grid-template-columns:1fr 1fr;gap:4px 8px}
.iso-readout .ir-cell{border-top:1px solid rgba(120,150,200,.12);padding-top:3px}
.iso-readout .ir-cell .lb{font-size:9px}
.iso-readout .ir-cell .v{font-size:11.5px;font-weight:600;color:#cfdcf5}
.iso-readout .ir-cell .v i{font-size:9px}

/* 装置图模式下把舞台区调高（等距图接近方形，宽扁舞台会两侧留白） */
#view-lab.iso-mode .stage-wrap{flex:1.62;min-height:280px}
#view-lab.iso-mode .charts{flex:.78;min-height:118px}
#view-lab.iso-mode .stage{padding:0}

/* 视图切换：舞台顶部居中，放大加图标 */
.stage-tabs{
  pointer-events:auto;
  position:absolute;left:50%;top:9px;transform:translateX(-50%);
  background:rgba(14,22,40,.80);backdrop-filter:blur(8px);
  border:1px solid rgba(120,150,200,.24);border-radius:9px;overflow:hidden;display:flex;
}
.stage-tabs button{
  padding:4px 14px;font-size:11.5px;color:#a9b8d4;display:flex;align-items:center;gap:6px;
  transition:all .15s;letter-spacing:.2px;
}
.stage-tabs button:hover{color:#e6eeff;background:rgba(90,130,200,.16)}
.stage-tabs button.on{background:rgba(70,120,255,.92);color:#fff}
.stage-tabs button svg{width:13px;height:13px;flex:0 0 13px}
.stage-tabs.pulse{animation:tabpulse 2.6s ease-out 2}
@keyframes tabpulse{0%,100%{box-shadow:0 0 0 0 rgba(47,107,255,0)}50%{box-shadow:0 0 0 7px rgba(47,107,255,.30)}}

/* ============ 情境题开发 · 对话式（v0.3） ============ */
.chat-main{flex:1;display:flex;flex-direction:column;min-height:0}
.chat-viewport{position:relative;display:flex;flex-direction:column;flex:1;min-height:0;min-width:0}
.chat-scroll{flex:1;overflow:auto;padding:24px 0 4px;scroll-behavior:auto}
.chat-latest{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);z-index:8;border-radius:999px;padding:8px 16px;background:var(--card,var(--bg));box-shadow:0 3px 14px rgba(25,44,76,.16);white-space:nowrap}
.chat-latest[hidden]{display:none}
.chat-col{max-width:800px;margin:0 auto;padding:0 22px;width:100%}

/* 空态 */
.hello{display:flex;flex-direction:column;align-items:center;text-align:center;padding:48px 10px 18px}
.hello-av{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  color:#fff;font-weight:700;font-size:17px;
  background:linear-gradient(140deg,#2f6bff,#5b8dff 60%,#38c5a8);
  box-shadow:0 8px 22px -10px rgba(47,107,255,.75);margin-bottom:16px;
}
.hello-t{font-size:19px;font-weight:660;letter-spacing:-.2px}
.hello-s{font-size:12.5px;color:var(--text-2);line-height:1.85;max-width:520px;margin-top:8px}
.hello-chips{display:flex;flex-direction:column;gap:7px;margin-top:22px;width:100%;max-width:560px}
.hchip{
  display:flex;gap:8px;align-items:baseline;text-align:left;
  background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:9px 12px;
  font-size:12px;color:var(--text-2);transition:all .15s;box-shadow:0 1px 2px rgba(20,32,60,.03);
}
.hchip:hover{border-color:#cfdcfa;background:#fbfdff;color:var(--text);transform:translateY(-1px)}
.hchip b{color:var(--blue);font-weight:620;flex:0 0 auto;font-size:11px}
.hchip span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* 消息 */
.msg{display:flex;gap:11px;margin-bottom:22px;align-items:flex-start}
.msg.user{justify-content:flex-end;margin-bottom:16px}
.av{
  width:27px;height:27px;flex:0 0 27px;border-radius:8px;display:grid;place-items:center;
  font-size:11px;font-weight:700;color:#fff;
  background:linear-gradient(140deg,#2f6bff,#5b8dff 60%,#38c5a8);
}
.ubub{
  max-width:76%;background:#e9eef7;border-radius:15px 15px 4px 15px;
  padding:9px 14px;font-size:13px;line-height:1.8;color:var(--text);
  white-space:pre-wrap;word-break:break-word;
}
.user-message{max-width:76%;min-width:0;display:flex;flex-direction:column;align-items:flex-end;gap:5px}
.user-message .ubub{max-width:100%;box-sizing:border-box}
.user-prompt-level{max-width:420px;font-size:11px;line-height:1.65;color:var(--text-2);text-align:right}
.user-prompt-level summary{cursor:pointer;list-style:none}
.user-prompt-level summary::-webkit-details-marker{display:none}
.user-prompt-level summary::after{content:' ▾'}
.user-prompt-level[open]{padding:7px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg-2,var(--bg))}
.user-prompt-level[open] summary::after{content:' ▴'}
.user-prompt-level p{margin:5px 0;text-align:left}
.user-prompt-level small{display:block;text-align:left}
.legacy-user-prompt{white-space:normal}
.legacy-user-prompt summary{cursor:pointer;font-size:12px}
.legacy-user-prompt[open] summary{margin-bottom:8px}
.legacy-user-prompt .user-prompt-text{white-space:pre-wrap}
@media(max-width:700px){.user-message{max-width:84%}}
.a-body{flex:1;min-width:0}

/* 分步 */
.think{display:flex;flex-direction:column;gap:5px;margin:2px 0 10px}
.think .st{display:flex;align-items:center;gap:7px;font-size:11.5px;color:var(--text-3);line-height:1.6}
.think .st .ck{display:inline-flex;color:#12a37e}
.think .st .ck svg{width:11px;height:11px}
.think .st.done{color:#8b98ad}
.think .st.failed{color:#bb5449}
.think .st.skipped{color:var(--text-3);opacity:.7}
.think .st.failed .status-mark,.think .st.skipped .status-mark{display:inline-flex;width:12px;justify-content:center}

/* 结论文本 */
.say{font-size:13px;line-height:1.85;color:var(--text)}
.say b{font-weight:640}

/* 复核未通过 · 警示降级交付（题稿与配图保留，明确提示人工核对） */
.say.item-review-failed{
  padding:10px 14px;margin-top:8px;border:1px solid rgba(198,91,78,.35);
  border-left:3px solid #c65b4e;border-radius:10px;background:rgba(198,91,78,.08);
}
.say.item-review-failed b{color:#b0443a}
.acard.item-review .rv-issue{color:#b0443a;font-size:12px}

/* 结果卡 */
.acard{
  background:var(--panel);border:1px solid var(--line);border-radius:12px;
  padding:12px 14px;margin-top:10px;box-shadow:0 1px 2px rgba(20,32,60,.04);
}
.acard-hd{display:flex;align-items:center;gap:8px;margin-bottom:9px}
.acard-t{font-size:12.5px;font-weight:650}
.acard-s{margin-left:auto;font-size:10.5px;color:var(--text-3)}
.acard .parm-tbl{margin-top:2px}

/* 往返检验 */
.rt-metrics{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px}
.mt{
  font-size:10.5px;color:var(--text-2);background:#f5f8fd;border:1px solid var(--line-2);
  border-radius:6px;padding:3px 8px;font-variant-numeric:tabular-nums;cursor:help;
}
.mt b{color:var(--text);font-weight:640;margin-left:2px}
.rt-sec{margin-top:11px;padding-top:2px}
.rt-hd{display:flex;align-items:center;gap:6px;font-size:11.5px;font-weight:600;color:var(--text-2);margin-bottom:5px}
.rt-hd .rhint{margin-left:auto;font-size:10px;color:#b3bfd3;font-weight:400}
.rdot{width:6px;height:6px;border-radius:50%;flex:0 0 6px}
.rdot.del{background:#e2756a}
.rdot.keep{background:#4aa98a}
.rdot.mis{background:#e8a33d}
.rt-i{padding:5px 0;border-bottom:1px dashed #f1f4f9;line-height:1.7}
.rt-i:last-child{border-bottom:none}
.rt-i .bd{
  font-size:11.5px;color:#a9b2c2;text-decoration:line-through;
  text-decoration-color:#efb3ad;text-decoration-thickness:1.5px;background:#fff7f6;border-radius:3px;padding:1px 3px;
}
.rt-i .bd.ask{text-decoration:none;background:#fffaf0;color:#b58a3c;border:1px solid #f5e3bd}
.rt-i .bd.keep{text-decoration:none;background:#f1f8f5;color:#2f7d63;border:1px solid #d5ebe2}
.rt-i .bw{font-size:11.5px;color:var(--text)}
.rt-i em{display:block;font-style:normal;font-size:10.5px;color:var(--text-3);margin-top:3px;line-height:1.65}
.rt-ok{font-size:11.5px;color:#12a37e;background:#f6fdfa;border:1px solid #ddf0e8;border-radius:7px;padding:6px 9px}

/* 修订稿 */
.rev-box{
  background:#fbfdff;border:1px solid #e1ebff;border-radius:9px;
  padding:10px 12px;font-size:12.5px;line-height:2;color:var(--text);
  max-height:230px;overflow:auto;word-break:break-word;
}
.rev-box .del{color:#b8c0cf;text-decoration:line-through;text-decoration-color:#e9a9a3;background:#fff8f7}

/* 动作行 */
.arow{display:flex;gap:8px;align-items:center;margin-top:12px;flex-wrap:wrap}
.arow.tight{margin-top:10px}
.arow .ahint{font-size:10.5px;color:#b3bfd3;margin-left:auto}

/* 生成题卡底部：保存（留在「我的情境」）是主按钮，复制是次级；
   和上面的评分点之间加一条细线，别再糊成一整段文字 */
.arow.tight.item-actions{margin-top:14px;padding-top:11px;border-top:1px solid var(--line-2);align-items:center}
.btn.save-cta{height:32px;padding:0 15px;font-size:12.5px;font-weight:600;border-radius:8px}
.btn.save-cta svg{width:14px;height:14px;flex:0 0 14px}
.btn.is-saved{
  height:32px;padding:0 13px;font-size:12px;
  background:#eff8f3;border-color:#cfe8db;color:#1d8a5b;box-shadow:none;
}
.btn.is-saved svg{width:13px;height:13px;flex:0 0 13px}
.btn.is-saved:hover{background:#e6f4ec;border-color:#bfe0ce;color:#17734a;box-shadow:none}
body.theme-dark .btn.is-saved{background:rgba(36,138,92,.16);border-color:rgba(66,180,128,.38);color:#6fd0a2}
body.theme-dark .btn.is-saved:hover{background:rgba(36,138,92,.24);border-color:rgba(66,180,128,.52);color:#85dcb3}

/* 输入区 */
.chat-dock{flex:0 0 auto;padding:10px 0 18px;background:linear-gradient(to top,var(--bg) 62%,rgba(242,244,248,0))}
.dock-col{max-width:800px;margin:0 auto;padding:0 22px;width:100%}
.enote{
  display:flex;align-items:center;gap:7px;margin-bottom:8px;
  background:#f3fbf7;border:1px solid #d7f0e5;border-radius:9px;padding:6px 11px;
  font-size:11.5px;color:#12926f;
}
.enote .en-ic{display:inline-flex}
.enote .en-ic svg{width:11px;height:11px}
.enote .en-tx{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.enote .en-un{font-size:11.5px;color:var(--blue);padding:0 2px}
.enote .en-un:hover{text-decoration:underline}

/* 增强按钮 */
.cb-chip.enh{color:#7c8aa3}
.cb-chip.enh.on{color:var(--blue);background:var(--blue-soft)}
.cb-chip.enh.on svg{color:var(--blue)}
.cb-chip.enh-undo:not(:disabled){color:var(--blue)}
.cb-chip.enh-undo svg{color:currentColor}
.cb-chip.enh-undo:disabled{opacity:.38;cursor:not-allowed;background:transparent}
@media (max-width:540px){
  .cb-chip.enh-undo .lbl{display:none}
  .cb-chip.enh-undo{width:28px;padding:0;justify-content:center;flex:0 0 28px}
}

@media (max-width:860px){
  .chat-col,.dock-col{padding:0 14px}
  .ubub{max-width:84%}
  .rt-hd .rhint{display:none}
}

.rt-ok.warn{color:#b58a3c;background:#fffaf0;border-color:#f5e3bd}

/* ============ 配套题面卡 / 投屏模式（v0.13） ============ */
.acard.item{border-color:#e1ebff}
.acard.gen{border-color:#ffe9c8}
.gen-ans{font-size:12px;line-height:1.9;color:var(--text);white-space:pre-wrap}
.hchip.brief b{color:#b06a10}
.item-stem{margin:2px 0 10px}
.is-scene{font-size:12.5px;line-height:1.9;color:var(--text);margin-bottom:7px}
.is-q{font-size:12.5px;line-height:1.8;color:var(--text);font-weight:520}
.item-ans{background:#f8faff;border:1px solid #e8efff;border-radius:8px;padding:9px 11px}
.ia-hd{font-size:11px;font-weight:620;color:var(--text-2);margin-bottom:6px}
.ia-rows{display:flex;flex-direction:column;gap:5px}
.ia-row{display:flex;gap:8px;align-items:baseline;font-size:11.5px;flex-wrap:wrap}
.ia-l{color:var(--text-2);flex:0 0 84px;font-weight:560}
.ia-v{font-variant-numeric:tabular-nums;font-weight:650;color:#2453c8;flex:0 0 auto}
.ia-f{color:var(--text-3);font-size:10.5px}
.ia-n{color:#9aa8c0;font-size:10.5px;width:100%;margin-left:92px;margin-top:-3px}
.item-score{font-size:10.5px;color:#8b98ad;margin-top:9px;line-height:1.7}

/* ============ RAG 相似真题卡 / 真题参照（v0.14） ============ */
.acard.rag{border-color:#e6e0ff}
.rag-i{border:1px solid #eef0f8;border-radius:8px;padding:8px 10px;margin-bottom:7px;background:#fcfcff}
.rag-top{display:flex;gap:6px;align-items:center;flex-wrap:wrap;margin-bottom:4px}
.rag-src{font-size:10px;font-weight:650;color:#6a5fd0;background:#f0edff;border-radius:4px;padding:1px 6px}
.rag-topic{font-size:10px;color:#8b98ad}
.rag-qt{font-size:10px;color:#fff;background:#9aa8c0;border-radius:4px;padding:1px 6px}
.rag-model{font-size:10px;color:#2453c8;background:#e8f0ff;border-radius:4px;padding:1px 6px}
.rag-t{font-size:11.5px;line-height:1.75;color:var(--text-2)}
.item-phr{margin-top:10px}
.ip-i{display:flex;gap:8px;align-items:baseline;font-size:11.5px;padding:3px 0;border-bottom:1px dashed #eef0f8}
.ip-i:last-child{border-bottom:none}
.ip-t{color:var(--text-2)}
.ip-n{color:#9aa8c0;font-size:10px;margin-left:auto;flex:0 0 auto;font-variant-numeric:tabular-nums}

/* ============ 情境示意图卡（题图，v0.16） ============ */
.acard.fig{border-color:#d8f0e4}
.fig-actions{flex-wrap:nowrap;overflow-x:auto;gap:8px;padding-bottom:3px}
.fig-actions > .btn{flex:0 0 auto;white-space:nowrap}
.fig-box{
  position:relative;
  background:#f8fafd;border:1px solid var(--line-2);border-radius:9px;
  padding:8px 10px;overflow:hidden;
}
.fig-box .iso-svg{width:100%;height:auto;display:block}
/* 拖拽旋转观看：抓手光标 + 拖动中防选中，右下角操作提示 */
.fig-box{cursor:grab;touch-action:none;user-select:none;-webkit-user-select:none}
.fig-box:active{cursor:grabbing}
.fig-box.rot{cursor:grabbing}
.fig-hint{
  position:absolute;right:8px;bottom:6px;font-size:10px;color:#8a97ad;
  background:rgba(255,255,255,.75);border:1px solid var(--line);border-radius:5px;
  padding:1px 7px;pointer-events:none;letter-spacing:.03em;
}
body.theme-dark .fig-hint{background:rgba(20,26,38,.75);color:#7c8aa5;border-color:#253046}
/* 缩放视口：只用右上角 ＋/－ 按钮改内部 transform，外层尺寸不变，不影响页面布局；
   滚轮一律交给页面滚动（长页面上下滚时路过图示不应误触缩放） */
.fig-vp{position:relative;overflow:hidden;border-radius:6px;cursor:grab;touch-action:none;user-select:none;-webkit-user-select:none}
.fig-vp.rot{cursor:grabbing}
.fig-vp:active{cursor:grabbing}
.fig-stage{transform-origin:0 0}
.fig-vp.rot .fig-stage{will-change:transform}
.fig-stage .iso-svg{width:100%;height:auto;display:block}
.fig-vp.zanim .fig-stage{transition:transform .16s ease-out}
/* 缩放控件：原来 24px 白底浅灰字压在浅色图上几乎看不见（用户反馈"容易被忽略"）。
 * 现在整组做成独立浮起的工具条 + 按钮加大到 28px；＋/－ 用主色实心，
 * 其余（⟲/正/全屏）保持白色中性，一眼能分出"哪个是缩放"。 */
.fig-ctrl{
  position:absolute;top:8px;right:8px;z-index:2;
  display:flex;gap:5px;padding:4px;border-radius:11px;
  background:#fff;border:1px solid #d5e0f0;
  box-shadow:0 3px 10px rgba(20,32,60,.12),0 1px 2px rgba(20,32,60,.06);
}
.fc-b{
  width:28px;height:28px;border:1px solid #cfdaec;border-radius:8px;
  background:#fff;color:#33455f;font-size:14px;font-weight:600;line-height:1;
  cursor:pointer;display:flex;align-items:center;justify-content:center;padding:0;
  font-family:inherit;
  box-shadow:0 1px 2px rgba(20,32,60,.08);
  transition:background .12s,color .12s,border-color .12s,box-shadow .12s,transform .08s;
}
.fc-b svg{display:block;width:15px;height:15px}
.fc-b:hover{background:#eef4ff;color:#1d5fd6;border-color:#9dbdf7;box-shadow:0 2px 6px rgba(47,107,255,.20)}
.fc-b:active{transform:translateY(1px)}
.fc-b:focus-visible{outline:2px solid #7ea8f0;outline-offset:1px}
.fc-b:disabled{background:#f2f5fa;border-color:#e4eaf4;color:#a6b5cb;box-shadow:none;cursor:default;transform:none}
.fc-b.zoom{background:#2f6bff;border-color:#2f6bff;color:#fff;box-shadow:0 2px 6px rgba(47,107,255,.30)}
.fc-b.zoom:hover{background:#1b58e0;border-color:#1b58e0;color:#fff;box-shadow:0 3px 8px rgba(47,107,255,.36)}
/* 到边界（1× 的「－」/ 4× 的「＋」）禁用时不能退成白底浅灰——那样又变回"看不见的按钮"。
   改成浅主色底 + 明显描边，形还在、只是压灰，一眼看得出"这颗到顶了"。 */
.fc-b.zoom:disabled{background:#d5e3fd;border-color:#adc7f5;color:#6d8ec9;box-shadow:none;cursor:default;transform:none}
body.theme-dark .fig-ctrl{background:#141b29;border-color:#2b3a52;box-shadow:0 3px 12px rgba(0,0,0,.45)}
body.theme-dark .fc-b{background:#1e2839;color:#c2d3ea;border-color:#35465f;box-shadow:0 1px 2px rgba(0,0,0,.35)}
body.theme-dark .fc-b:hover{background:#26334a;color:#cfe0ff;border-color:#4a6488}
body.theme-dark .fc-b:disabled{background:#1a2231;color:#5f7391;border-color:#2a374b}
body.theme-dark .fc-b.zoom{background:#2f6bff;border-color:#2f6bff;color:#fff}
body.theme-dark .fc-b.zoom:hover{background:#3f7bff;border-color:#3f7bff}
body.theme-dark .fc-b.zoom:disabled{background:#1f3358;border-color:#3a5a94;color:#8fb0dd}
/* 示意图风格切换（手绘 ⇄ 方块 MC）：卡头右侧小胶囊，.on=方块模式生效中 */
.fig-style{
  margin-left:auto;height:22px;padding:0 9px;border-radius:11px;
  border:1px solid var(--line);background:#fff;color:var(--text-3);
  font-size:11px;cursor:pointer;transition:all .15s;white-space:nowrap;
}
.fig-style:hover{border-color:#c5d3ee;color:var(--text)}
.fig-style.on{background:#e9f0ff;border-color:#9db9f0;color:#2f6bff}
body.theme-dark .fig-style{background:#161d2b;border-color:#253046;color:#8ea2c0}
body.theme-dark .fig-style:hover{color:#c8d6ee}
body.theme-dark .fig-style.on{background:#1c2a47;border-color:#3a5a99;color:#9cc0ff}
/* 情境图全屏观看：视口铺满屏幕，图等比铺满可用区（preserveAspectRatio 居中），交互控件保持可用 */
.fig-vp:fullscreen{
  background:#101828;display:grid;place-items:center;padding:26px;
}
.fig-vp:fullscreen .fig-stage{
  width:calc(100vw - 52px);height:calc(100vh - 52px);
  display:grid;place-items:center;
}
.fig-vp:fullscreen .fig-stage .iso-svg{width:100%;height:100%}
.fig-vp:fullscreen .fig-hint{color:#93a7c2}
/* 全屏工具条放在底部留白处居中，增大点击区与图标；普通卡片仍用右上角原尺寸。 */
.fig-vp:fullscreen .fig-ctrl{
  top:auto;right:auto;left:50%;bottom:clamp(20px,4vh,48px);transform:translateX(-50%);
  gap:8px;padding:8px;border-radius:16px;
  background:rgba(14,22,36,.96);border-color:#647b9d;box-shadow:0 6px 22px rgba(0,0,0,.4);
}
.fig-vp:fullscreen .fc-b{
  width:48px;height:48px;flex:0 0 48px;border-radius:11px;font-size:22px;
  background:#24344d;color:#f3f7ff;border-color:#7891b4;box-shadow:0 1px 2px rgba(0,0,0,.4);
}
.fig-vp:fullscreen .fc-b svg{width:24px;height:24px}
.fig-vp:fullscreen .fc-b:hover{background:#26344a;color:#dbe9ff;border-color:#54719a}
.fig-vp:fullscreen .fc-b:disabled{background:#18202e;color:#54657f;border-color:#263144}
.fig-vp:fullscreen .fc-b.zoom{background:#2f6bff;border-color:#2f6bff;color:#fff}
.fig-vp:fullscreen .fc-b.zoom:hover{background:#3f7bff;border-color:#3f7bff}
.fig-vp:fullscreen .fc-b.zoom:disabled{background:#253f6b;border-color:#7599dc;color:#b7d0ff}
.fig-rd{display:flex;gap:6px;flex-wrap:wrap;margin-top:9px}
.fig-rd .fr{
  font-size:10.5px;color:var(--text-2);background:#f5f8fd;border:1px solid var(--line-2);
  border-radius:6px;padding:3px 8px;font-variant-numeric:tabular-nums;
}
.fig-rd .fr b{color:var(--text);font-weight:650;margin:0 1px}
.fig-note{font-size:11px;color:var(--text-2);margin-top:9px;line-height:1.75;letter-spacing:.02em}
/* 情境图播放条 */
.fig-player{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:10px;padding:8px 10px;background:#f4f8fb;border:1px solid #e3e9f2;border-radius:8px}
.fig-player .fp-position{min-width:38px;font-size:11px;color:var(--text-2);font-variant-numeric:tabular-nums;text-align:right}
.fig-player .fp-note{flex-basis:100%;font-size:11px;color:var(--text-2);line-height:1.6}
.native-figure-player{flex-wrap:wrap}
.native-figure-player input[type=range]{min-width:90px;flex:1;accent-color:#2d5a80}
.native-figure-player .native-playback-main{display:flex;flex:1 1 100%;align-items:center;flex-wrap:wrap;gap:8px;min-width:0}
.native-figure-player .native-playback-main>.muted{font-size:11px;font-variant-numeric:tabular-nums;white-space:nowrap}
.native-figure-player .native-playback-main>.btn:first-child{background:#2f6bff;color:#fff;border-color:#2f6bff}
.native-figure-player .native-playback-steps{display:flex;flex:1 1 100%;flex-wrap:wrap;gap:6px}
.native-figure-player .native-playback-steps>.btn{font-size:11px}
.native-figure-player .native-playback-variants{display:flex;flex:1 1 100%;flex-wrap:wrap;gap:7px;padding:5px 0}
.native-figure-player .native-playback-variants>.btn{font-size:12px}
.native-figure-player .native-playback-context{display:flex;align-items:center;gap:12px;flex:1 1 100%;padding:10px 12px;border:1px solid #d8e7df;border-radius:9px;background:#eef8f3}
.native-figure-player .native-playback-context.warning{background:#fff7e9;border-color:#efd5a5}
.native-playback-condition{flex:1;min-width:180px;font-size:13px;line-height:1.6;color:#315b4a}
.native-playback-context.warning .native-playback-condition{color:#80551f}
.native-figure-player .native-playback-primary-action{flex:none;min-height:36px;font-weight:600}
.native-figure-player .native-playback-scope,.fig-player .native-playback-scope{display:flex;align-items:center;flex-wrap:wrap;flex:1 1 100%;gap:7px;font-size:12px;line-height:1.6}
.native-playback-scope-label{padding:2px 8px;border-radius:5px;background:#edf2fb;color:#355778}
.native-playback-ending{padding:3px 8px;border-radius:5px;background:#edf6f2;color:#315d4a}
.native-playback-ending.warning{background:#fff2dc;color:#80551f}
.native-playback-ending[hidden]{display:none}
@media(max-width:600px){.native-figure-player .native-playback-context{align-items:stretch;flex-direction:column}.native-figure-player .native-playback-primary-action{width:100%}}
.native-figure-player .native-playback-note{flex-basis:100%;font-size:10.5px;line-height:1.6;color:var(--text-3)}
.native-playback-speed{height:28px;padding:0 5px;border:1px solid var(--line);border-radius:6px;background:var(--card,#fff);color:var(--text-2);font:inherit;font-size:11px}
.fig-player .fp-label{font-size:11px;color:var(--text-2);flex:0 0 auto}
.fig-player .fp-btn{width:30px;height:30px;border-radius:50%;border:1px solid #c9d5e2;background:#fff;color:#5b6f84;display:flex;align-items:center;justify-content:center;cursor:pointer;flex:0 0 auto;transition:background .15s,color .15s,border-color .15s}
.fig-player .fp-btn svg{width:15px;height:15px}
.fig-player .fp-btn:hover{background:#eaf2f9;color:#2d5a80;border-color:#9db8d2}
.fig-player .fp-btn.main{background:#2d5a80;border-color:#2d5a80;color:#fff}
.fig-player .fp-btn.main:hover{background:#244c6e}
.fig-player input[type=range]{flex:1;min-width:60px;accent-color:#2d5a80;cursor:pointer}
.fig-player .fp-speed{font-size:11px;padding:3px 4px;border:1px solid #c9d5e2;border-radius:6px;background:#fff;color:#5b6f84;flex:0 0 auto}
body.theme-dark .fig-player{background:#151d2b;border-color:#253046}
body.theme-dark .fig-player .fp-btn{background:#1b2434;border-color:#2c3a50;color:#8ba0b8}
body.theme-dark .fig-player .fp-btn:hover{background:#202c40;color:#a9c2dc}
body.theme-dark .fig-player .fp-btn.main{background:#3f7fb0;border-color:#3f7fb0;color:#fff}
body.theme-dark .fig-player .fp-speed{background:#1b2434;border-color:#2c3a50;color:#8ba0b8}
.acard.fig .acard-hd{flex-wrap:wrap;gap:6px 12px}
.acard.fig .fig-box{padding:4px;background:#f8fbfc}
.scenario-svg text{user-select:none}
/* 右栏独立使用可见高度，图按内容边界等比放大并居中。 */
.pr-fig{grid-area:fig;margin:0;background:#fff;border:1px solid #e3e9f2;border-radius:12px;padding:16px;min-width:0;min-height:0;align-self:stretch;overflow:hidden;display:flex;flex-direction:column;gap:12px}
.pr-fig>.fig-vp{flex:1;min-width:0;min-height:0;width:100%}
.pr-fig .fig-stage{width:100%;height:100%;display:flex;align-items:center;justify-content:center}
.pr-fig .fig-stage>svg{display:block;flex:none;max-width:100%;max-height:none;overflow:hidden}
.pr-fig .fig-ctrl{top:auto;right:auto;left:50%;bottom:12px;transform:translateX(-50%);gap:8px;padding:6px}
.pr-fig .fc-b{width:40px;height:40px;flex:0 0 40px;font-size:20px}
.pr-fig .fc-b svg{width:20px;height:20px}
.pr-fig .fig-hint{bottom:4px;right:6px}
.pr-fig-hd{display:flex;align-items:center;gap:12px;flex:0 0 auto;min-width:0}
.pr-fig-title{font-size:16px;line-height:1.5;font-weight:650;color:var(--text);min-width:0}
.pr-fig-focus{margin-left:auto;white-space:nowrap;flex:0 0 auto}
.pr-fig-note{font-size:11px;line-height:1.5;color:#a16c37;padding:0 2px;flex:0 0 auto}
.pr-fig-principle{font-size:13px;line-height:1.7;color:var(--text);margin-bottom:6px}
.pr-fig-unavailable{margin:auto;font-size:16px;line-height:1.8;color:var(--text-2);max-width:28em}
body.theme-dark .fig-box{background:#141a26}
/* 题图外框 4px 内衬在浅色下是 #f8fbfc，深色必须显式压掉：
 * `.acard.fig .fig-box` 是三段选择器，单写 `body.theme-dark .fig-box` 权重不够，
 * 深色下会留一圈白边（SVG 本身是深色纸面，白圈格外扎眼）。 */
body.theme-dark .acard.fig .fig-box{background:#111a2e}
body.theme-dark .pr-fig{background:#10151f;border-color:#232c3d}
body.theme-dark .acard.fig{border-color:#1d3a2e}
.item-refs{margin-top:10px}
.ir-i{display:flex;gap:8px;align-items:baseline;font-size:11px;padding:3px 0}
.ir-src{flex:0 0 auto;font-size:10px;font-weight:620;color:#6a5fd0}
.ir-t{color:var(--text-3);line-height:1.6}

/* 投屏模式 */
#view-builder.present .chat-main{display:none}
#view-builder.present .topbar .tb-crumb{display:none}
.present-panel{
  position:absolute;inset:0;background:#fff;z-index:50;display:none;
  flex-direction:column;padding:20px 30px;
}
.pr-hd{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.pr-t{font-size:15px;font-weight:680}
.pr-hd .btn{margin-left:auto}
/* 投屏正文：左栏题干 + 设问（连续阅读），右栏情境图（跟着题干看），一屏放得下。
 * 字号随视口放大（clamp 下限 = 原来 1366 屏的尺寸，保证小屏不溢出），大屏投影更饱满。 */
.pr-body{
  flex:1;min-height:0;overflow:hidden;display:grid;
  grid-template-columns:minmax(0,1fr) minmax(340px,1.04fr);
  grid-template-rows:auto minmax(0,1fr);
  grid-template-areas:"warn warn" "text fig";
  align-content:start;align-items:start;
  column-gap:28px;row-gap:0;width:100%;margin:0 auto;
}
.pr-warn{grid-area:warn;margin-bottom:16px}
/* 没有配图时整栏通吃，不留半屏空白 */
.pr-body.no-fig{grid-template-columns:minmax(0,1fr);grid-template-areas:"warn" "text"}
.pr-text{grid-area:text;display:flex;flex-direction:column;gap:20px;min-width:0;min-height:0;height:100%;overflow-y:auto;overflow-x:hidden;scrollbar-gutter:stable;padding-right:4px}
.pr-text>*{flex-shrink:0}
.pr-body.figure-focus{grid-template-columns:minmax(0,1fr);grid-template-areas:"warn" "fig"}
.pr-body.figure-focus .pr-text{display:none}
.pr-scene{font-size:calc(clamp(26px, 2vw, 34px) * var(--pr-k,1));line-height:1.6;font-weight:500;letter-spacing:.2px;color:#1c2433}
.pr-qs{border-top:1px dashed #dde5ef;padding-top:14px;display:flex;flex-direction:column;gap:10px}
.pr-qs-hd{font-size:calc(clamp(12px, .75vw, 14px) * var(--pr-k,1));font-weight:650;letter-spacing:.18em;color:#8b98ad}
.pr-q{font-size:calc(clamp(22px, 1.65vw, 28px) * var(--pr-k,1));line-height:1.66;color:#1c2433;font-weight:520;display:flex;flex-direction:column;gap:8px}
.pr-act{margin-top:2px}
.pr-empty{grid-column:1/-1;font-size:15px;color:#93a0b8;padding:40px 0}
.present-panel .btn.primary{height:36px;padding:0 18px;font-size:13px}
.present-panel .btn.primary svg{width:15px;height:15px}
#view-builder.present .tb-right .btn:not(.primary){display:none}
.present-btn.on{background:var(--blue-soft);color:var(--blue);border-color:#c9d8ff}

/* 常见1024宽投影仍保留图文并排；更窄屏幕改为上下排列。 */
@media (max-width:1000px){
  .pr-body{grid-template-columns:minmax(0,1fr);grid-template-rows:auto max-content max-content;grid-template-areas:"warn" "text" "fig";row-gap:18px;overflow:auto}
  .pr-warn{margin-bottom:0}
  .pr-text{height:auto;min-height:min-content;overflow:visible;scrollbar-gutter:auto}
  .pr-fig{height:55vh;min-height:300px}
  .pr-body.figure-focus{grid-template-rows:auto minmax(0,1fr);overflow:hidden}
  .pr-body.figure-focus .pr-fig{height:auto;min-height:0}
}
@media (max-width:860px){
  .present-panel{padding:20px 22px}
  .pr-scene{font-size:calc(21px * var(--pr-k,1))}
  .pr-q{font-size:calc(18px * var(--pr-k,1))}
}

/* ============ 提示词增强：真实 LLM（v0.14） ============ */
.cb-chip.enh.busy{opacity:.6;pointer-events:none}
.cb-chip.enh.busy svg{animation:sp .7s linear infinite}

/* 配置弹层 */
.ov{
  position:fixed;inset:0;background:rgba(20,32,60,.34);z-index:200;
  display:flex;align-items:center;justify-content:center;backdrop-filter:blur(2px);
}
.cfg-box{
  width:430px;max-width:92vw;background:#fff;border-radius:14px;padding:22px 24px;
  box-shadow:0 24px 60px -20px rgba(20,32,60,.45);animation:cfgIn .18s ease;
}
@keyframes cfgIn{from{transform:translateY(8px);opacity:0}to{transform:none;opacity:1}}
.cfg-t{font-size:15px;font-weight:680}
.catalog-dialog{width:min(850px,94vw);max-height:85vh;overflow:auto}
.catalog-hover-preview{
  position:fixed;z-index:1;padding:14px;background:var(--panel);color:var(--text);
  border:1px solid var(--line);border-radius:12px;box-shadow:var(--modal-shadow,0 12px 40px rgba(20,32,60,.24));
  max-height:calc(100vh - 24px);overflow:auto;overflow-wrap:anywhere;
}
.catalog-hover-preview[hidden]{display:none}
.catalog-hover-title{font-size:14px;font-weight:600;margin-bottom:10px}
.catalog-hover-figure{border:1px solid var(--line-2);border-radius:8px;overflow:hidden;margin-bottom:10px}
.catalog-hover-figure>svg{display:block;width:100%;height:auto;max-height:250px}
.catalog-hover-source{font-size:12px;line-height:1.7;color:var(--text-2);margin-bottom:8px}
.catalog-hover-note{font-size:11px;line-height:1.6;color:var(--text-3)}
.modal-ft .catalog-back{margin-right:auto}
@media(max-width:520px){
  .modal-ft:has(.catalog-back){flex-wrap:wrap}
  .catalog-dialog{padding:18px 16px}
}
.cfg-s{font-size:11.5px;color:#8b98ad;line-height:1.7;margin:7px 0 16px}
.cfg-field{margin-bottom:11px}
.cfg-field label{display:block;font-size:11px;color:#8b98ad;margin-bottom:5px;letter-spacing:.3px}
.cfg-field input{
  width:100%;height:32px;border:1px solid var(--line);border-radius:7px;padding:0 10px;
  font-size:12.5px;color:var(--text);outline:none;background:#fcfdff;
}
.cfg-field input:focus{border-color:var(--blue);background:#fff}
.cfg-presets{display:flex;gap:6px;margin:4px 0 14px;flex-wrap:wrap}
.pbtn{
  height:26px;padding:0 11px;border:1px solid var(--line);border-radius:7px;background:#fff;
  font-size:11.5px;color:var(--text-2);cursor:pointer;
}
.pbtn:hover{border-color:#c5d3ee;color:var(--text);background:#fbfcff}
.cfg-acts{display:flex;gap:8px;justify-content:flex-end;margin-top:14px}
.cfg-acts .btn.primary{height:32px;padding:0 16px}
.cfg-hint{font-size:10.5px;color:#b3bfd3;margin-top:10px;text-align:right}

/* ============ 控制台升级：双主题 / 工具行 / 预设（v0.15） ============ */

/* —— 深色主题变量（实验室控制台） —— */
body.theme-dark{
  --bg:#0b1120;
  --panel:#111a2e;
  --line:#22304e;
  --line-2:#1a2540;
  --text:#e9eefc;
  --text-2:#a3b2cf;
  --text-3:#6a7ba3;
  --blue:#5b8aff;
  --blue-soft:rgba(91,138,255,.15);
  --stage:#0a1020;
  --amber:#eab055;
  --amber-soft:rgba(234,176,85,.12);
  --shadow:0 1px 2px rgba(0,0,0,.3), 0 10px 30px -14px rgba(0,0,0,.55);
}

/* —— 深色主题：外壳定向覆盖（舞台/HUD 本就深色，不动） —— */
body.theme-dark .home{
  background:
    radial-gradient(1100px 520px at 12% -8%, #14224a 0%, rgba(20,34,74,0) 60%),
    radial-gradient(900px 480px at 100% 0%, #0f2e2a 0%, rgba(15,46,42,0) 55%),
    var(--bg);
}
body.theme-dark ::-webkit-scrollbar-thumb{background:#2a3a5e;background-clip:content-box}
body.theme-dark ::-webkit-scrollbar-thumb:hover{background:#3a4c74;background-clip:content-box}
body.theme-dark .btn{background:var(--panel);color:var(--text-2)}
body.theme-dark .btn:hover{border-color:#33456f;color:var(--text);background:#1a2540}
body.theme-dark .btn.ghost:hover{background:#1a2540}
body.theme-dark .chip{background:#1a2540}
body.theme-dark .tree-search input{background:#0e1626;border-color:#22304e}
body.theme-dark .tree-search input:focus{background:#131d33}
body.theme-dark .tree-search input::placeholder{color:#4a5a7c}
body.theme-dark .tree-book>.row:hover{background:#16203a}
body.theme-dark .tree-chap>.row:hover{background:#151e36}
body.theme-dark .tree-book .caret,body.theme-dark .tree-chap .caret{color:#5c6f92}
body.theme-dark .tree-book .count{color:#5c6f92}
body.theme-dark .sec .dot{background:#33415e}
body.theme-dark .sec:hover{background:#151e36}
body.theme-dark .sec.locked{color:#4a5a7c}
body.theme-dark .sec.locked .dot{background:#232f4a}
body.theme-dark .sec .badge{color:#66779a;border-color:#22304e}
body.theme-dark .explain{background:var(--amber-soft);border-color:rgba(234,176,85,.32);color:#e3c088}
body.theme-dark .explain .tag{background:rgba(234,176,85,.18);color:#eab055}
body.theme-dark .explain .txt em{color:#f0bc63}
body.theme-dark .grp-hd .n{background:#1a2540;color:#7e90b0}
body.theme-dark .grp-hd .rt{color:#5c6f92}
body.theme-dark .prow-val input{background:#0e1626;border-color:#22304e}
body.theme-dark .prow-val input:focus{background:#131d33;border-color:var(--blue)}
body.theme-dark input[type=range]{background:#22304e}
body.theme-dark input[type=range]::-webkit-slider-thumb{background:#e9eefc;border-color:var(--blue)}
body.theme-dark .chk input{background:#0e1626;border-color:#33415e}
body.theme-dark .metric-big{background:linear-gradient(180deg,#141e36,#101827);border-color:#22304e}
body.theme-dark .metric-big .v{color:#7ea8ff}
body.theme-dark .metric-big .v .u{color:#66779a}
body.theme-dark .metric-big .f{color:#5c6f92}
body.theme-dark .metric{background:#101827}
body.theme-dark .metric .f{color:#5c6f92}
body.theme-dark .metric.hl{border-color:#2b4a8f;background:#12203c}
body.theme-dark .metric.hl .v{color:#7ea8ff}
body.theme-dark .pbtn:hover{background:#1a2540}
body.theme-dark .tspeed select{background:#0e1626;border-color:#22304e;color:var(--text-2)}
body.theme-dark .modal{background:var(--panel)}
body.theme-dark .modal-hd .x:hover{background:#1a2540}
body.theme-dark .formula{background:#101827;border-color:#1a2540}
body.theme-dark .formula .fx{color:#bcd2ff}
body.theme-dark table.dtable th{background:#141e36}
body.theme-dark table.dtable td{border-bottom-color:#1a2540}
body.theme-dark table.dtable tbody tr:hover{background:#131d33}
body.theme-dark table.dtable tr.mark td{background:rgba(234,176,85,.12)}
body.theme-dark .verify-row{background:#101827;border-color:#1a2540}
body.theme-dark .verify-row .sim{color:#7ea8ff}
body.theme-dark .verify-row .eq{color:#3d4d6e}
body.theme-dark .verify-row.ok-row{border-color:#1d4a3a;background:#0f1f1a}
body.theme-dark .verify-row .ok{color:#4ad6a4}
body.theme-dark .ov{background:rgba(5,9,18,.6)}
body.theme-dark .cfg-box{background:var(--panel)}
body.theme-dark .cfg-field input{background:#0e1626;border-color:#22304e}
body.theme-dark .cfg-field input:focus{background:#131d33}
body.theme-dark .cfg-presets .pbtn{background:var(--panel);color:var(--text-2)}
body.theme-dark .cfg-presets .pbtn:hover{background:#1a2540;color:var(--text);border-color:#33456f}
body.theme-dark .tbtn{background:var(--panel)}
body.theme-dark .tbtn:hover{border-color:#33456f;background:#1a2540}
body.theme-dark .tbtn.link{color:#5b8aff;border-color:#22385f;background:#101c33}
body.theme-dark .tbtn.link:hover{background:#142244}
body.theme-dark .mini-sel{background:#0e1626;border-color:#22304e}
body.theme-dark textarea.scene{background:#0e1626;border-color:#22304e}
body.theme-dark textarea.scene:focus{background:#0d1526}
body.theme-dark .ex{background:#101827;border-color:#1a2540}
body.theme-dark .ex:hover{background:#131f3a;border-color:#2b3c60}
body.theme-dark .ubub{background:#1a2540}
body.theme-dark .hchip:hover{border-color:#2b3c60;background:#16203a}
body.theme-dark .mt{background:#16203a}
body.theme-dark .rt-i{border-bottom-color:#1a2540}
body.theme-dark .rt-i .bd{background:#2a1a1c;text-decoration-color:#a85a52;color:#c9a9a5}
body.theme-dark .rt-i .bd.ask{background:#241d10;color:#d9b476;border-color:#4a3a1c}
body.theme-dark .rt-ok{background:#0f1f1a;border-color:#1d4a3a}
body.theme-dark .rt-ok.warn{background:#1f1a10;border-color:#4a3a1c}
body.theme-dark .rev-box{background:#0e1626;border-color:#22385f}
body.theme-dark .rev-box .del{background:#2a1a1c;text-decoration-color:#a85a52}
body.theme-dark .chat-dock{background:linear-gradient(to top,var(--bg) 62%,transparent)}
body.theme-dark .enote{background:#0f1f1a;border-color:#1d4a3a;color:#4ad6a4}
body.theme-dark .cb-menu{background:var(--panel)}
body.theme-dark .cb-mi:hover{background:#16203a}
body.theme-dark .cb-mi .k{background:#1a2540}
body.theme-dark .cb-ic:hover,body.theme-dark .cb-chip:hover{background:#16203a}
body.theme-dark .cb-send{background:#22304e}
body.theme-dark .cb-chip.enh.on{background:var(--blue-soft)}
body.theme-dark .composer:focus-within{border-color:#33456f;box-shadow:0 0 0 3px rgba(91,138,255,.12), var(--shadow)}
body.theme-dark .acard.item{border-color:#22385f}
body.theme-dark .item-ans{background:#101c33;border-color:#22385f}
body.theme-dark .ia-v{color:#7ea8ff}
body.theme-dark .item-score{color:#8b98ad}
body.theme-dark .acard.rag{border-color:#2e2a5e}
body.theme-dark .rag-i{background:#101427;border-color:#22304e}
body.theme-dark .rag-src{color:#a89bef;background:#1e1b3d}
body.theme-dark .rag-qt{background:#33415e}
body.theme-dark .rag-model{color:#7ea8ff;background:#142244}
body.theme-dark .ip-i{border-bottom-color:#1a2540}
body.theme-dark .hchip.brief b{color:#e8b455}
body.theme-dark .parm-tbl td{border-bottom-color:#1a2540}
body.theme-dark .parm-tbl td.v{color:#7ea8ff}
body.theme-dark .tag-ok{background:#0f1f1a;color:#4ad6a4;border-color:#1d4a3a}
body.theme-dark .tag-warn{background:#1f1a10;color:#e8b455;border-color:#4a3a1c}
body.theme-dark .tag-info{background:#142244;color:#7ea8ff;border-color:#22385f}
body.theme-dark .think .st .ck{color:#4ad6a4}
body.theme-dark .think .st.done{color:#7e90b0}

/* —— 实验台工具已并入顶栏（.tb-right），原独立工具行样式已移除 —— */

/* —— 经典预设 chips（右栏顶部） —— */
.presets{display:flex;flex-wrap:wrap;gap:5px}
.pchip{
  font-size:11px;color:var(--text-2);background:var(--panel);
  border:1px solid var(--line);border-radius:6px;padding:3px 9px;
  transition:all .14s;cursor:pointer;line-height:1.6;
}
.pchip:hover{border-color:var(--blue);color:var(--blue);background:var(--blue-soft)}
.pchip.on{border-color:var(--blue);color:#fff;background:var(--blue)}
.pchip svg{width:10px;height:10px;flex:0 0 10px;margin-right:3px;vertical-align:-1px}

/* —— 实验指南 modal —— */
.guide-sec{margin-bottom:16px}
.guide-sec:last-child{margin-bottom:0}
.guide-h{
  font-size:12px;font-weight:650;color:var(--text);margin-bottom:8px;
  display:flex;align-items:center;gap:6px;
}
.guide-h .bar{width:3px;height:12px;border-radius:2px;background:var(--blue)}
.guide-p{font-size:12px;color:var(--text-2);line-height:1.85}
.guide-p em{font-style:normal;color:var(--text);font-weight:560}
.guide-keys{display:grid;grid-template-columns:repeat(2,1fr);gap:7px 16px}
.guide-key{display:flex;align-items:center;gap:8px;font-size:11.5px;color:var(--text-2)}
.guide-key kbd{
  font-family:ui-monospace,Consolas,monospace;font-size:10px;color:var(--text-2);
  background:var(--panel);border:1px solid var(--line);border-bottom-width:2px;
  border-radius:5px;padding:1px 6px;min-width:44px;text-align:center;
}
.guide-steps{display:flex;flex-direction:column;gap:7px;counter-reset:gs}
.guide-step{display:flex;gap:9px;font-size:12px;color:var(--text-2);line-height:1.75;align-items:flex-start}
.guide-step .n{
  counter-increment:gs;flex:0 0 auto;width:17px;height:17px;border-radius:50%;
  background:var(--blue-soft);color:var(--blue);font-size:10px;font-weight:700;
  display:grid;place-items:center;margin-top:2px;
}
.guide-step .n::before{content:counter(gs)}

/* —— 分步演示 modal —— */
.demo-step{
  display:flex;gap:11px;align-items:flex-start;padding:11px 12px;
  border:1px solid var(--line-2);border-radius:10px;margin-bottom:8px;background:#fcfdff;
  transition:border-color .15s;
}
.demo-step:hover{border-color:#c9d8ff}
body.theme-dark .demo-step{background:#101827}
body.theme-dark .demo-step:hover{border-color:#33456f}
.demo-step .idx{
  flex:0 0 auto;width:22px;height:22px;border-radius:7px;background:var(--blue-soft);
  color:var(--blue);font-size:11px;font-weight:700;display:grid;place-items:center;
}
.demo-step .nm{font-size:12.5px;font-weight:620;color:var(--text);line-height:1.6}
.demo-step .nt{font-size:11.5px;color:var(--text-2);line-height:1.7;margin-top:2px}
.demo-step .btn{margin-left:auto;flex:0 0 auto}

/* 投屏模式保持白底（投影仪可读性），不随深色主题变化 */
.fig-proof{margin:10px 0;color:var(--muted,#718897);font-size:12px;line-height:1.8}
.fig-proof summary{cursor:pointer;color:var(--accent,#458d9f)}
.fig-proof p{margin:4px 0;overflow-wrap:anywhere}
.fig-proof .fig-source{padding:10px;border-radius:8px;background:rgba(128,160,180,.08)}

/* —— 生成的题目卡 · 自行编辑（genCardEditor） —— */
.acard.gen .gen-edit{margin-left:auto;flex:0 0 auto;height:26px;padding:0 10px;font-size:11.5px}
.acard.gen .gen-edit svg{width:12px;height:12px}
.acard.gen.editing{border-color:#ffd591}
body.theme-dark .acard.gen.editing{border-color:#5a4a22}
.ge-field{margin:10px 0 12px}
.ge-label{font-size:11px;font-weight:620;color:var(--text-2);margin-bottom:5px;display:flex;align-items:center;gap:6px}
.ge-label .ge-req{color:#c2503c;font-size:10px;font-weight:500}
body.theme-dark .ge-label .ge-req{color:#d08a80}
.ge-ta{
  width:100%;box-sizing:border-box;resize:vertical;min-height:56px;max-height:360px;
  font:inherit;font-size:12.5px;line-height:1.8;color:var(--text);
  background:#fff;border:1px solid var(--line-2);border-radius:8px;padding:8px 10px;
  transition:border-color .15s, box-shadow .15s;
}
.ge-ta:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(47,107,255,.12)}
.ge-qs{display:flex;flex-direction:column;gap:7px}
.ge-qrow{display:flex;align-items:flex-start;gap:7px}
.ge-qn{flex:0 0 auto;min-width:44px;font-size:11px;font-weight:600;color:var(--text-3);padding-top:10px}
.ge-qrow .ge-ta{flex:1}
.ge-del{flex:0 0 auto;width:26px;height:26px;margin-top:5px;border:1px solid var(--line-2);border-radius:7px;background:#fff;color:#a2564e;cursor:pointer;display:grid;place-items:center;transition:background .15s,border-color .15s}
.ge-del:hover{background:#fdf1ef;border-color:#ecc8c2}
.ge-del svg{width:11px;height:11px}
.ge-add{margin-top:8px}
.ge-acts{display:flex;gap:8px;align-items:center;margin-top:6px;flex-wrap:wrap}
.ge-acts .ahint{margin-left:auto}
body.theme-dark .ge-ta{background:#0d1626;border-color:#2a3a5c;color:var(--text)}
body.theme-dark .ge-ta:focus{border-color:#4d7fe0;box-shadow:0 0 0 3px rgba(77,127,224,.18)}
body.theme-dark .ge-del{background:#131c30;border-color:#2a3a5c;color:#c98a80}
body.theme-dark .ge-del:hover{background:#1c2740;border-color:#3a4d78}

/* ============ 定制建模编辑器（builder，v38，fm-*） ============ */
.acard.fig.editing{border-color:#c9b8ff}
body.theme-dark .acard.fig.editing{border-color:#4a3d6e}
.fm-warn{display:none;margin:0 0 10px;padding:8px 10px;font-size:11.5px;line-height:1.7;color:#a2564e;background:#fdf1ef;border:1px solid #ecc8c2;border-radius:8px}
body.theme-dark .fm-warn{color:#d08a80;background:#2a1b1c;border-color:#4a2e2e}
.fm-sec{margin:14px 0;border:1px solid var(--line-2);border-radius:10px;overflow:hidden}
.fm-sec-hd{display:flex;align-items:center;gap:8px;padding:8px 11px;background:#f6f8fc;border-bottom:1px solid var(--line-2)}
body.theme-dark .fm-sec-hd{background:#101a2c}
.fm-sec-t{font-size:12px;font-weight:650;color:var(--text)}
.fm-sec-n{margin-right:auto;font-size:10.5px;color:var(--text-3)}
.fm-add{height:24px;padding:0 8px;font-size:11px}
.fm-add svg{width:11px;height:11px}
.fm-sec-body{display:flex;flex-direction:column;gap:9px;padding:9px 11px}
.fm-item{border:1px solid var(--line-2);border-radius:9px;padding:8px 10px;background:#fff}
body.theme-dark .fm-item{background:#0d1626}
.fm-item-hd{display:flex;align-items:center;gap:7px;flex-wrap:wrap;margin-bottom:7px}
.fm-tag{flex:0 0 auto;font-size:10px;font-weight:640;padding:1px 7px;border-radius:6px;background:var(--blue-soft);color:var(--blue);letter-spacing:.3px}
.fm-tag.dim{background:#eef1f7;color:var(--text-3);font-weight:500}
body.theme-dark .fm-tag.dim{background:#1a2540;color:#7d8ba6}
.fm-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px 10px}
.fm-cell{display:flex;flex-direction:column;gap:3px;min-width:0}
.fm-cell.grow{grid-column:1 / -1}
.fm-l{font-size:10px;color:var(--text-3);font-weight:600;white-space:nowrap}
.fm-in{width:100%;box-sizing:border-box;height:29px;font:inherit;font-size:12px;color:var(--text);
  background:#fff;border:1px solid var(--line-2);border-radius:7px;padding:0 8px;transition:border-color .15s}
.fm-in:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(47,107,255,.12)}
.fm-in.fm-label{font-weight:620}
.fm-in.fm-ev{height:auto;min-height:29px;padding:5px 8px;font-size:11.5px;line-height:1.6}
.fm-vec{display:flex;gap:5px}
.fm-vec .fm-in{flex:1;padding:0 5px;text-align:center}
.fm-del{margin-top:0}
body.theme-dark .fm-in{background:#0d1626;border-color:#2a3a5c;color:var(--text)}
body.theme-dark .fm-in:focus{border-color:#4d7fe0;box-shadow:0 0 0 3px rgba(77,127,224,.18)}
@media (max-width:390px){
  .fm-grid{grid-template-columns:1fr}
  .fm-cell.grow{grid-column:auto}
}

/* 模型编辑：常用外观紧凑展示，几何和结构按需展开。 */
.fm-intro{margin:0 0 10px;color:var(--text-2);font-size:12px;line-height:1.7}
.fm-entity .fm-item-hd{flex-wrap:nowrap}
.fm-entity .fm-label{flex:1;min-width:0}
.fm-basic{grid-template-columns:minmax(0,1fr) minmax(0,1.2fr) minmax(0,1fr);align-items:end}
.fm-size-control{display:flex;gap:8px;align-items:center;min-height:29px}
.fm-scale{width:100%;min-width:0;accent-color:var(--blue);cursor:pointer}
.fm-scale-value{min-width:35px;text-align:right;font-size:11px;font-variant-numeric:tabular-nums;color:var(--text-2)}
.fm-more{margin-top:8px;border-top:1px solid var(--line-2);padding-top:6px}
.fm-more>summary{cursor:pointer;font-size:11px;color:var(--text-2);line-height:1.8;user-select:none}
.fm-more-grid{margin-top:9px}
.fm-entity-tools{display:flex;gap:8px;justify-content:space-between;align-items:center;margin-top:10px}
.fm-remove{font-size:11px;color:var(--text-2);padding:3px 8px}
.fm-extra>summary{cursor:pointer;user-select:none;border-bottom:0;list-style:none}
.fm-extra>summary::-webkit-details-marker{display:none}
.fm-extra>summary::before{content:'›';font-size:17px;line-height:1;width:9px;color:var(--text-3)}
.fm-extra[open]>summary::before{transform:rotate(90deg)}
.fm-extra[open]>summary{border-bottom:1px solid var(--line-2)}
.fm-extra-add{padding:0 11px 10px;text-align:right}
.fm .ge-acts{gap:8px;flex-wrap:wrap;padding-top:8px;border-top:1px solid var(--line-2)}
.fm .ge-acts .ahint{flex-basis:100%;margin-left:0}
.fm .fm-sec{margin:10px 0}
@media(max-width:540px){
  .fm-basic{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .fm-basic>.fm-cell:nth-child(2){grid-column:1 / -1;grid-row:2}
  .fm-intro{font-size:11px}
  .fm .ge-acts .btn{flex:1 1 auto;justify-content:center}
}


/* 文字修改优先：默认只保留一句要求，手动字段整体折叠。 */
.fm-request{display:block;box-sizing:border-box;width:100%;min-height:94px;resize:vertical;padding:11px 12px;border:1px solid var(--line);border-radius:10px;background:var(--panel);color:var(--text);font:inherit;font-size:13px;line-height:1.8}
.fm-request::placeholder{color:var(--text-3)}
.fm-request:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(47,107,255,.1)}
.fm-request-actions{display:flex;align-items:center;gap:8px;margin-top:11px}
.fm-status{margin-top:10px;color:var(--text-2);font-size:12px;line-height:1.7}
.fm-status:empty{display:none}
.fm-manual{margin-top:14px;border-top:1px solid var(--line-2);padding-top:10px}
.fm-manual>summary{cursor:pointer;color:var(--text-2);font-size:12px;line-height:1.8;user-select:none}
.fm-config{display:flex;align-items:center;gap:4px;margin-top:8px;color:var(--text-3);font-size:11px}
.fm-config .btn{font-size:11px;padding:2px 5px;height:auto}
.fm-warn{margin-top:10px}
@media(max-width:540px){.fm-request{font-size:12px;min-height:112px}.fm-request-actions>.fm-describe{flex:1;justify-content:center}}

/* ============ 情境图对话编辑（图卡内常驻面板） ============ */
.fe{margin-top:10px;padding:10px 11px 9px;border:1px solid var(--line-2);border-radius:10px;background:#fbfcff}
body.theme-dark .fe{background:#0e1522;border-color:#233149}
.fe-hd{display:flex;align-items:center;gap:7px;flex-wrap:wrap}
.fe-ico{display:inline-flex;flex:0 0 auto;width:15px;height:15px;color:var(--blue)}
.fe-ico svg{width:15px;height:15px}
.fe-t{font-size:12.5px;font-weight:650;color:var(--text)}
.fe-sub{flex:1 1 100%;order:9;font-size:11px;line-height:1.6;color:var(--text-3)}
.fe-gap{flex:1 1 auto}
.fe-hd .btn{height:24px;padding:0 8px;font-size:11px}
.fe-log{margin-top:8px;max-height:168px;overflow-y:auto;display:flex;flex-direction:column;gap:6px;padding-right:2px;scroll-behavior:smooth}
.fe-turn{display:flex;flex-direction:column;gap:6px;padding-bottom:5px;border-bottom:1px solid var(--line-2)}
.fe-turn:last-child{border-bottom:0}
.fe-turn-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px;padding-left:22px}
.fe-turn-actions .btn{height:24px;padding:0 7px;font-size:11px}
.fe-turn-actions .fe-delete{color:var(--text-3)}
.fe-turn-actions .fe-delete:hover:not(:disabled){color:#a2564e;background:#fdf1ef}
.fe-turn-actions .btn:disabled{opacity:.42;cursor:not-allowed}
.fe-undone{margin-right:auto;font-size:10.5px;color:var(--text-3)}
.fe-history-note{margin:6px 0 0;font-size:10.5px;line-height:1.6;color:var(--text-3)}
.fe-history-note[hidden]{display:none}
.fe-empty{margin:2px 0 0;font-size:11px;line-height:1.7;color:var(--text-3)}
.fe-msg{display:flex;gap:6px;align-items:flex-start;font-size:12px;line-height:1.65}
.fe-who{flex:0 0 auto;width:16px;height:16px;margin-top:2px;border-radius:5px;background:#eef2f9;color:var(--text-3);font-size:10px;font-weight:650;display:flex;align-items:center;justify-content:center}
body.theme-dark .fe-who{background:#1a2337;color:#7d8ba6}
.fe-b{flex:1 1 auto;min-width:0;padding:5px 8px;border:1px solid var(--line-2);border-radius:8px;background:#fff}
body.theme-dark .fe-b{background:#131c2c;border-color:#243149}
.fe-b p{margin:0;color:var(--text);word-break:break-word}
.fe-msg.me .fe-who{background:var(--blue-soft);color:var(--blue)}
.fe-msg.me .fe-b{background:var(--blue-soft);border-color:transparent}
.fe-msg.note .fe-b{background:transparent;border-style:dashed;color:var(--text-2)}
.fe-msg.bad .fe-who{background:#fdf1ef;color:#a2564e}
.fe-msg.bad .fe-b{background:#fdf7f6;border-color:#ecc8c2}
body.theme-dark .fe-msg.bad .fe-b{background:#2a1b1c;border-color:#4a2e2e}
body.theme-dark .fe-msg.bad .fe-b p{color:#d08a80}
.fe-kind{display:inline-block;margin-top:3px;padding:0 6px;font-size:10px;border-radius:5px;background:#eef1f7;color:var(--text-3)}
body.theme-dark .fe-kind{background:#1a2540;color:#7d8ba6}
.fe-compose{margin-top:8px}
.fe-ta{display:block;box-sizing:border-box;width:100%;min-height:54px;resize:vertical;padding:8px 10px;border:1px solid var(--line);border-radius:9px;background:var(--panel);color:var(--text);font:inherit;font-size:12.5px;line-height:1.7}
.fe-ta::placeholder{color:var(--text-3)}
.fe-ta:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(47,107,255,.1)}
.fe-ta:disabled{background:#f4f6fa;color:var(--text-3);cursor:not-allowed}
body.theme-dark .fe-ta:disabled{background:#131b29}
.fe-bar{display:flex;align-items:center;gap:8px;margin-top:7px}
.fe-tips{flex:1 1 auto;min-width:0;font-size:10.5px;letter-spacing:.2px;color:var(--text-3)}
.fe-send{height:28px;padding:0 14px;font-size:12px}
.fe-status{margin-top:6px;font-size:11.5px;line-height:1.7;color:var(--text-2)}
.fe-status:empty{display:none}
.fe-foot{display:flex;align-items:center;gap:8px;margin-top:7px;padding-top:7px;border-top:1px solid var(--line-2)}
.fe-foot .btn{height:24px;padding:0 8px;font-size:11px}
.fe-hint{font-size:10.5px;color:var(--text-3)}
.fe-prev-tag{position:absolute;left:10px;bottom:10px;padding:2px 8px;border-radius:999px;background:rgba(47,107,255,.92);color:#fff;font-size:10.5px;letter-spacing:.3px;pointer-events:none}
.fe-config{display:flex;align-items:center;gap:4px;margin-top:8px;color:var(--text-3);font-size:11px}
.fe-config .btn{font-size:11px;padding:2px 5px;height:auto}
@media(max-width:540px){.fe-send{flex:1 1 auto;justify-content:center}.fe-tips{display:none}.fe-hint{display:none}}

/* ============ 左侧历史会话栏（builder，v27） ============ */
.builder-body{flex:1;display:flex;min-height:0;position:relative}
.b-side{width:230px;flex:none;display:flex;flex-direction:column;min-height:0;border-right:1px solid var(--line);background:var(--panel);transition:margin .18s ease}
.b-side:not(.open){margin-left:-230px;visibility:hidden}

.bs-head{height:46px;flex:none;display:flex;align-items:center;gap:8px;padding:0 12px;border-bottom:1px solid var(--line)}
.bs-hd-t{font-weight:700;font-size:13px;color:var(--text)}
.bs-new{margin-left:auto;display:inline-flex;align-items:center;gap:4px;height:26px;border:1px solid var(--line);background:transparent;color:var(--text-2);border-radius:8px;padding:0 9px;font-size:11px;font-family:inherit;cursor:pointer}
.bs-new:hover{color:var(--blue);border-color:var(--blue)}
.bs-new svg{width:12px;height:12px}
/* 栏内「收起」：标题行右端的主入口（[会话] ←auto→ [＋新建] [‹ 收起]），顶栏开关是第二入口。
 * 26px 高、约 54px 宽，左箭头 + 「收起」文字，--text-2（这个灰度是定过的，别改 --text-3），
 * hover 蓝字 + 浅蓝底 + 浅蓝描边；深色主题见下方 body.theme-dark 段。 */
.bs-close{display:inline-flex;align-items:center;gap:4px;height:26px;padding:0 9px;border:1px solid transparent;background:transparent;color:var(--text-2);border-radius:8px;font-size:11px;font-family:inherit;cursor:pointer;flex:none}
.bs-close:hover{color:var(--blue);background:var(--blue-soft);border-color:#c9dcfb}
.bs-close svg{width:13px;height:13px}
.bs-close:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
/* 窗格边缘把手：贴在会话栏右沿的竖排小标签，收起/展开共用同一颗。
 * 展开时 left=230px（栏宽）写「‹ 收起」，收起后 left=0 翻成「会话 ›」——
 * 位置与尺寸两态完全一致，跟着窗格边走，两个方向都"在手边"。
 * 配色按 weips 的要求压低（2026-10-26）：浅底浅边灰字，不抢画面，hover 才出蓝；
 * 收起态比展开态略深一口气的浅蓝灰——找得到但不喊。 */
.b-handle{
  position:absolute;left:0;top:8px;z-index:31;
  display:inline-flex;flex-direction:column;align-items:center;gap:9px;
  width:32px;height:112px;padding:13px 0 0;
  border:1px solid #dbe3f0;border-left:0;border-radius:0 12px 12px 0;
  background:#f7f9fe;color:var(--text-2);cursor:pointer;font-family:inherit;
  box-shadow:2px 0 10px -6px rgba(15,25,50,.35);
  transition:left .18s ease,background .14s,color .14s,border-color .14s,box-shadow .14s;
  will-change:left;
}
.b-side.open ~ .b-handle{left:230px}
.b-handle svg{width:16px;height:16px;flex:0 0 16px;transition:transform .18s ease}
.b-handle:not(.open) svg{transform:rotate(180deg)}
.b-handle .bh-t{writing-mode:vertical-rl;text-orientation:upright;font-size:12px;font-weight:600;line-height:1;letter-spacing:2.5px}
.b-handle:hover{background:var(--blue-soft);border-color:#c9dcfb;color:var(--blue)}
.b-handle:active{transform:translateY(.5px)}
.b-handle:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.b-handle:not(.open){background:#e9f0fb;border-color:#cfdef5;color:var(--text-2);box-shadow:2px 0 12px -6px rgba(15,25,50,.4)}
.b-handle:not(.open):hover{background:#e0eafa;border-color:#b9cff2;color:var(--blue)}
/* 窄屏侧栏是抽屉：铺一层可点掉的蒙层，点对话区任意位置就收回去 */
.b-side-veil{display:none}
.bs-scroll{flex:1;overflow-y:auto;padding:6px 8px 14px}
.bs-search{display:flex;align-items:center;gap:4px;padding:9px 10px 4px;flex:none}
.bs-search-in{min-width:0;width:100%;height:30px;padding:0 8px;border:1px solid var(--line);border-radius:8px;background:var(--panel);color:var(--text);font-family:inherit;font-size:11px;outline:none}
.bs-search-in:focus{border-color:var(--blue);box-shadow:0 0 0 2px var(--blue-soft)}
.bs-search-clear,.bs-history-action{border:0;background:transparent;color:var(--text-2);font-family:inherit;font-size:10px;line-height:1.5;padding:4px 5px;border-radius:6px;cursor:pointer;white-space:nowrap}
.bs-search-clear:hover,.bs-history-action:hover{color:var(--blue);background:var(--blue-soft)}
.bs-search-clear[hidden],.bs-save-notice[hidden]{display:none}
.bs-history-tools{display:flex;gap:5px;padding:0 7px 6px;flex:none;border-bottom:1px solid var(--line)}
.bs-save-notice{margin:7px 8px 0;padding:8px;border:1px solid #e8cc95;border-radius:8px;background:#fff8e9;color:#805724;flex:none;font-size:10px;line-height:1.65}
.bs-save-actions{display:flex;gap:5px;margin-top:4px}
.bs-save-notice .bs-history-action{color:inherit;border:1px solid currentColor}
.bs-item.is-unsaved .bs-meta{color:#a16c37}
body.theme-dark .bs-save-notice{background:#302619;border-color:#71532e;color:#edc28c}
body.theme-dark .bs-item.is-unsaved .bs-meta{color:#edc28c}
.bs-gt{font-size:10px;color:var(--text-3);margin:10px 4px 4px;letter-spacing:.08em}
.bs-item{position:relative;padding:8px 30px 7px 9px;border-radius:9px;cursor:pointer;margin-bottom:2px}
.bs-item:hover{background:var(--blue-soft)}
.bs-item.on{background:var(--blue-soft);box-shadow:inset 2px 0 0 var(--blue)}
.bs-item .bs-t{font-size:12px;color:var(--text);line-height:1.45;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bs-item .bs-meta{font-size:10px;color:var(--text-3);margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bs-ops{position:absolute;right:4px;top:50%;transform:translateY(-50%);display:none;align-items:center;gap:2px}
.bs-item > .bs-ops{display:flex;opacity:0;pointer-events:none}
.bs-item:hover > .bs-ops,.bs-item:focus-within > .bs-ops,.bs-item.menu-on > .bs-ops{opacity:1;pointer-events:auto}
.bs-op{width:20px;height:20px;border:none;background:transparent;color:var(--text-3);border-radius:6px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;padding:0}
.bs-op svg{width:12px;height:12px}
.bs-op:hover{background:var(--blue-soft);color:var(--blue)}
.bs-op.danger:hover{background:#fdecea;color:#d84c46}
.bs-item.pinned .bs-t{font-weight:600}
/* 会话行悬停操作入口：置顶的行右端常显一枚图钉，鼠标进入后换成「⋯」菜单按钮 */
.bs-pinmark{position:absolute;right:6px;top:50%;transform:translateY(-50%);display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;color:var(--blue);opacity:.8;pointer-events:none}
.bs-pinmark svg{width:11px;height:11px}
.bs-item:hover .bs-pinmark,.bs-item:focus-within .bs-pinmark,.bs-item.menu-on .bs-pinmark{display:none}
.bs-item.menu-on{background:var(--blue-soft)}
.bs-op.bs-om{width:22px}
.bs-op.bs-om.on{background:var(--blue-soft);color:var(--blue)}
.bs-dots{display:block;font-size:17px;font-weight:700;line-height:1;letter-spacing:0;transform:translateY(-1.5px)}
/* 行内重命名：整行变成输入框，保留时间行做定位参照 */
@media(hover:none),(pointer:coarse){.bs-item > .bs-ops{opacity:1;pointer-events:auto}.bs-item > .bs-pinmark{display:none}}
.bs-item.renaming{padding-right:9px;cursor:default}
.bs-item.renaming > .bs-ops,.bs-item.renaming > .bs-pinmark{display:none}
.bs-rename{width:100%;box-sizing:border-box;font-family:inherit;font-size:12px;line-height:1.45;color:var(--text);background:var(--panel);border:1px solid var(--blue);border-radius:6px;padding:1px 5px;outline:none;box-shadow:0 0 0 2px var(--blue-soft)}
/* 历史会话折叠头：展开/收起就放在组标题旁（caret + 总数），与项目空间的折叠头同款交互。
 * 默认只列最近 5 条，点标题展开全部、再点收起；底部不再放「查看更多」。 */
.bs-gt-hist{display:flex;align-items:center;gap:5px;margin:10px 0 4px;padding:2px 5px;border-radius:8px;color:var(--text-2);font-weight:600;cursor:pointer;user-select:none}
.bs-gt-hist:hover{color:var(--blue);background:var(--blue-soft)}
.bs-gt-hist .bs-caret{flex:none}
.bs-gt-hist.open .bs-caret{transform:rotate(180deg)}
.bs-gt-hist .bs-gt-t{font-size:10px;letter-spacing:.08em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bs-gt-hist:focus-visible{outline:2px solid var(--blue);outline-offset:1px}
/* 侧栏拖拽排序：拖动源半透明，落点画插入线；拖到空间上整行高亮表示“放进来” */
.bs-item[draggable="true"],.bs-space[draggable="true"]{cursor:grab}
.bs-item.dragging,.bs-space.dragging{opacity:.42}
.bs-item.drop-before,.bs-space.drop-before{box-shadow:inset 0 2px 0 var(--blue)}
.bs-item.drop-after,.bs-space.drop-after{box-shadow:inset 0 -2px 0 var(--blue)}
.bs-space.drop-into .bs-sp-hd{background:var(--blue-soft);box-shadow:inset 0 0 0 1.5px var(--blue)}
.bs-group.drop-group{background:var(--blue-soft);outline:1.5px dashed var(--blue);outline-offset:2px;border-radius:10px}
.bs-empty{padding:24px 14px;font-size:11px;color:var(--text-3);line-height:1.8;text-align:center}
.tb-side svg{width:15px;height:15px}
/* 顶栏会话栏开关：默认只出图标（顶栏寸土寸金），宽屏补上文字；
 * 展开时靠 .on 变蓝并改文案为「收起」，与栏内那颗按钮说的是同一件事 */
.tb-side{flex:0 0 auto}
.tb-side .tb-side-t{display:none}
@media(min-width:1240px){.tb-side .tb-side-t{display:inline}}
#view-builder.present .b-side{display:none}
#view-builder.present .b-side-veil{display:none}
#view-builder.present .b-handle{display:none}
@media(max-width:920px){
  .b-side{position:relative;z-index:auto;top:auto;bottom:auto;left:auto;width:190px;flex:0 0 190px;margin-left:0;transform:none;box-shadow:none;transition:none}
  .b-side:not(.open){margin-left:-190px;visibility:hidden}
  .b-handle{width:30px;height:104px;top:8px}
  .b-side.open ~ .b-handle{left:190px}
}
@media(max-width:760px){
  .b-handle{width:28px;height:96px}
}
body.theme-dark .b-side{background:#111826;border-color:#223047}
body.theme-dark .bs-new{border-color:#2a3a55;color:#8ea2c0}
body.theme-dark .bs-close{border-color:transparent;color:#8ea2c0}
body.theme-dark .bs-close:hover{color:#9cc0ff;background:#1a2742;border-color:#31518a}
body.theme-dark .b-handle{background:#141d31;border-color:#26344f;color:#a3b2cf;box-shadow:2px 0 12px -6px rgba(0,0,0,.6)}
body.theme-dark .b-handle:hover{background:#1a2742;border-color:#3a5a99;color:#9cc0ff}
body.theme-dark .b-handle:not(.open){background:#182338;border-color:#2c3d5c;color:#a3b2cf;box-shadow:2px 0 12px -6px rgba(0,0,0,.6)}
body.theme-dark .b-handle:not(.open):hover{background:#1e2c46;border-color:#3a5a99;color:#9cc0ff}
body.theme-dark .bs-new:hover{color:#9cc0ff;border-color:#3a5a99}
body.theme-dark .bs-item:hover{background:rgba(90,140,255,.12)}
body.theme-dark .bs-item.on{background:rgba(90,140,255,.2);box-shadow:inset 2px 0 0 #5a8cff}
body.theme-dark .bs-op:hover{background:rgba(90,140,255,.15);color:#9cc0ff}
body.theme-dark .bs-op.danger:hover{background:rgba(216,76,70,.18);color:#e88b84}
body.theme-dark .bs-gt-hist{color:#8ea2c0}
body.theme-dark .bs-gt-hist:hover{color:#9cc0ff;background:rgba(90,140,255,.15)}

/* ============ 项目空间 + 独立窗格（builder，v28） ============ */
.bs-gt-sp{display:flex;align-items:center;gap:6px}
.bs-sp-add{width:18px;height:18px;border:none;background:transparent;color:var(--text-3);border-radius:5px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;padding:0}
.bs-sp-add svg{width:12px;height:12px}
.bs-sp-add:hover{background:var(--blue-soft);color:var(--blue)}
.bs-space{margin:1px 0}
.bs-sp-hd{position:relative;display:flex;align-items:center;gap:6px;min-height:32px;padding:6px;border-radius:8px;cursor:pointer;color:var(--text)}
.bs-sp-hd:hover{background:var(--blue-soft)}
.bs-caret{display:inline-flex;width:12px;height:12px;color:var(--text-3);transition:transform .15s ease}
.bs-caret svg{width:12px;height:12px}
.bs-space.open .bs-caret{transform:rotate(180deg)}
.bs-sp-name{font-size:12px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1;min-width:0}
.bs-sp-n{flex:none;font-size:10px;color:var(--text-3);background:var(--line-2);border-radius:8px;padding:0 6px;line-height:16px;white-space:nowrap}
/* Keep counts and actions in separate flex slots; reveal controls without shifting the row. */
.bs-sp-hd > .bs-caret{flex:none}
.bs-sp-hd > .bs-ops{position:static;transform:none;display:flex;flex:none;opacity:0;pointer-events:none}
.bs-sp-hd:hover > .bs-ops,.bs-sp-hd:focus-within > .bs-ops{opacity:1;pointer-events:auto}
@media(hover:none),(pointer:coarse){.bs-sp-hd > .bs-ops{opacity:1;pointer-events:auto}}
.bs-sub{padding:2px 0 4px 14px;border-left:1px solid var(--line-2);margin-left:11px}
.bs-empty-s{padding:8px 10px;font-size:10.5px;color:var(--text-3);line-height:1.7}
.bs-sp-in{padding:4px 2px}
.bs-in{width:100%;box-sizing:border-box;border:1px solid var(--blue);border-radius:8px;padding:5px 8px;font-size:12px;outline:none;background:var(--panel);color:var(--text)}
.b-move,.b-sess{max-height:calc(100dvh - 16px);overflow-y:auto;overscroll-behavior:contain}
.b-move{width:240px;min-width:180px;max-width:calc(100vw - 16px)}
.b-move .bm-hd{padding:7px 12px 4px;font-size:10px;color:var(--text-3);letter-spacing:.06em}
/* 会话「⋯」菜单：顶部一行会话名 + 相对时间，下面才是操作项 */
.b-sess{min-width:196px;max-width:min(264px,calc(100vw - 16px))}
.bm-sess-hd{display:flex;align-items:center;gap:8px;padding:5px 9px 6px;margin-bottom:4px;border-bottom:1px solid var(--line-2)}
.bm-sess-t{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:11.5px;font-weight:560;color:var(--text-2)}
.bm-sess-time{flex:none;font-size:10px;color:var(--text-3)}
body.theme-dark .bs-sp-hd:hover{background:rgba(90,140,255,.12)}
body.theme-dark .bs-sp-n{background:#1c2740;color:#8ea2c0}
body.theme-dark .bs-sub{border-color:#223047}
body.theme-dark .bs-item.menu-on{background:rgba(90,140,255,.2)}
body.theme-dark .bs-pinmark{color:#9cc0ff}
body.theme-dark .bs-op.bs-om.on{background:rgba(90,140,255,.18);color:#9cc0ff}
body.theme-dark .bs-rename{background:#141d2f;color:#e6edf9;border-color:#5a8cff;box-shadow:0 0 0 2px rgba(90,140,255,.18)}
body.theme-dark .cb-mi.danger{color:#e88b84}
body.theme-dark .cb-mi.danger:hover{background:rgba(216,76,70,.18);color:#e88b84}
body.theme-dark .cb-sep{background:#1d2739}
body.theme-dark .bm-sess-hd{border-bottom-color:#1d2739}
body.theme-dark .bs-in{background:#0d1626;border-color:#3a5a99;color:var(--text)}

/* ============ 初版同步恢复（2026-10-22）：播放条扩展控件 / 删除确认与撤销 / 正面视图 / 复核失败提示 ============ */
.stage.fs .speed-value,.stage.fs .play-loop{color:#c9d6f0}
.stage.fs .play-status{color:#9db0d0}
.tspeed input[type=range]{width:88px;min-width:60px;accent-color:var(--blue)}
.speed-value{min-width:38px;font-variant-numeric:tabular-nums;color:var(--text-2)}
.play-loop{display:flex;align-items:center;gap:4px;white-space:nowrap;font-size:11px;color:var(--text-2);cursor:pointer}
.play-loop input{accent-color:var(--blue)}
.play-status{font-size:10.5px;min-width:120px;color:var(--text-3);white-space:nowrap}
@media(max-width:1000px){.player,.stage.fs .player{height:82px;flex-basis:82px;flex-wrap:wrap;gap:5px 8px;padding:7px 10px}.stage.fs .stage-br,.stage.fs .iso-host .iso-viewbar{bottom:96px}.track{height:28px;flex:1;min-width:100px}.tspeed{order:10}.play-loop{order:11}.play-status{order:12;margin-left:auto}.tspeed input[type=range]{width:90px}}
.say.item-review-failed .rv-note{display:block;margin-top:6px;font-size:11.5px;line-height:1.8;opacity:.82}
/* 正面视图按钮的生效态：与 fig-style 胶囊同款高亮语汇 */
.fc-b.on{background:#e8f0ff;color:#2f6bff;border-color:#9dbdf7;font-weight:650}
body.theme-dark .fc-b.on{background:#1c2a4a;color:#9cc0ff;border-color:#3a5488}
/* 删除确认弹窗：中央模态，醒目说明删除对象与影响 */
.dlg-mask{position:fixed;inset:0;background:rgba(15,25,45,.45);backdrop-filter:blur(2px);display:flex;align-items:center;justify-content:center;z-index:900;animation:dlgFade .18s ease}
.dlg{width:min(430px,calc(100vw - 48px));max-height:calc(100dvh - 32px);overflow-y:auto;overscroll-behavior:contain;background:var(--panel);border:1px solid var(--line-2);border-radius:16px;box-shadow:0 24px 64px rgba(15,25,45,.28);padding:22px 24px 18px;animation:dlgPop .18s ease}
.dlg-t{font-size:15px;font-weight:700;color:var(--text)}
.dlg-b{margin-top:10px;font-size:12.5px;line-height:1.9;color:var(--text-2);overflow-wrap:anywhere}
.dlg-b b{color:var(--text)}
.dlg-a{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}
.dlg-cancel{border:1px solid var(--line-2);background:var(--panel);color:var(--text);border-radius:9px;padding:7px 18px;font-size:12.5px;cursor:pointer}
.dlg-cancel:hover{border-color:var(--blue);color:var(--blue)}
.dlg-del{border:none;background:#d84c46;color:#fff;border-radius:9px;padding:7px 18px;font-size:12.5px;font-weight:600;cursor:pointer}
.dlg-del:hover{background:#c0423d}
@keyframes dlgFade{from{opacity:0}}
@keyframes dlgPop{from{opacity:0;transform:translateY(10px) scale(.97)}}
/* 撤销条：删除成功后底部浮出，8s 内可撤销（风格对齐 .toast 深底） */
.undo-bar{position:fixed;left:50%;bottom:110px;transform:translateX(-50%) translateY(10px);display:flex;align-items:center;gap:12px;background:rgba(22,32,56,.96);color:#eaf1ff;border-radius:10px;padding:8px 10px 8px 16px;font-size:12px;box-shadow:0 10px 30px -12px rgba(0,0,0,.5);opacity:0;pointer-events:none;transition:all .22s;z-index:850;max-width:calc(100vw - 40px)}
.undo-bar.on{opacity:1;transform:translateX(-50%) translateY(0);pointer-events:auto}
.undo-t{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.undo-btn{border:none;background:#4a7ce8;color:#fff;border-radius:7px;padding:4px 14px;font-size:12px;cursor:pointer;font-weight:600;flex:0 0 auto}
.undo-btn:hover{background:#5d8cf2}
.undo-x{border:none;background:transparent;color:#9fb0cc;cursor:pointer;display:inline-flex;padding:3px;border-radius:6px;flex:0 0 auto}
.undo-x svg{width:12px;height:12px}
.undo-x:hover{color:#fff}
body.theme-dark .dlg{background:#111c30;border-color:#223047}
body.theme-dark .dlg-cancel{background:#111c30;color:var(--text-2)}
/* 空间内新建对话：欢迎页归属提示胶囊 */
.hello-space{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:999px;background:var(--blue-soft);color:var(--blue);font-size:12px;margin-bottom:16px}
.hello-space b{font-weight:600}
body.theme-dark .hello-space{background:rgba(90,140,255,.14);color:#9cc0ff}

/* ============ 视觉统一层（2026-10-24 美观度优化） ============
 * 只调字体层级、圆角、阴影、间距节奏与焦点态，不改布局尺寸和交互逻辑。
 * 整段追加在末尾：同等权重下覆盖前面的散值，出问题可整段回退。 */
:root{
  --r-1:6px; --r-2:8px; --r-3:10px; --r-4:14px; --r-5:18px;
  --shadow-1:0 1px 2px rgba(20,32,60,.05);
  --shadow-2:0 2px 6px rgba(20,32,60,.05), 0 14px 32px -22px rgba(20,32,60,.30);
  --ease:cubic-bezier(.22,.61,.36,1);
  --card-line:#e6eaf3;
}

/* —— 基础：中文行高、选区、键盘焦点 —— */
body{line-height:1.55}
::selection{background:rgba(47,107,255,.16)}
:focus{outline:none}
:focus-visible{outline:2px solid rgba(47,107,255,.55);outline-offset:2px;border-radius:var(--r-2)}
/* 表单控件有自己的聚焦样式（边框变色），不再叠一层 outline */
input:focus-visible,textarea:focus-visible,select:focus-visible{outline:none}
.entry:focus-visible,.ms-card:focus-visible{outline-offset:3px}

/* —— 滚动条：更细更淡，悬停才显形 —— */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:#d5dce9;border:3px solid transparent;background-clip:content-box}
::-webkit-scrollbar-thumb:hover{background:#b9c4d8;background-clip:content-box}

/* —— 按钮：统一圆角与悬停层次，主按钮给一点蓝光 —— */
.btn{
  border-radius:var(--r-2);
  transition:background .16s var(--ease),border-color .16s var(--ease),
             color .16s var(--ease),box-shadow .16s var(--ease),transform .12s var(--ease);
}
.btn:hover{box-shadow:0 1px 2px rgba(20,32,60,.07)}
.btn:active{transform:translateY(1px);box-shadow:none}
.btn.primary{
  background:linear-gradient(180deg,#3b76ff,#2f6bff);border-color:#2f6bff;
  box-shadow:0 1px 2px rgba(47,107,255,.28), 0 8px 18px -12px rgba(47,107,255,.85);
}
.btn.primary:hover{
  background:linear-gradient(180deg,#356ef5,#2559e0);border-color:#2559e0;
  box-shadow:0 2px 6px rgba(47,107,255,.32), 0 12px 24px -14px rgba(47,107,255,.9);
}
.btn.ghost:hover{box-shadow:none}

/* —— 结果卡：圆角加大、留白加宽、标题层级更清楚 —— */
.acard{border-radius:var(--r-4);border-color:var(--card-line);padding:14px 16px;box-shadow:var(--shadow-1)}
.acard + .acard{margin-top:12px}
.acard-hd{gap:9px;margin-bottom:11px}
.acard-t{font-size:13px;font-weight:620;letter-spacing:.1px}
.acard-s{font-size:11px}

/* —— 首页：卡片更轻、悬停更有回应（主标题区已删除，相关规则一并清掉） —— */
.entries{gap:15px}
.entry{
  border-radius:var(--r-5);border-color:var(--card-line);padding:19px 22px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.entry:hover{
  border-color:#c3d5ff;
  box-shadow:0 2px 6px rgba(20,32,60,.05), 0 22px 48px -26px rgba(47,107,255,.55);
}
.entry h3{font-size:17.5px;font-weight:680;letter-spacing:-.3px}
.entry p{font-size:12.5px;line-height:1.66;color:#5b667c}
.entry-ico{box-shadow:inset 0 0 0 1px rgba(255,255,255,.75)}
.chip{background:#f7f9fd;border-color:#e8ecf4;border-radius:var(--r-1);color:#5b667c}
.entry .go{transition:transform .2s var(--ease),color .2s var(--ease)}

/* —— 数值：等宽数字，读数不左右跳 —— */
.metric-big .v,.metric .v,.grp-hd .n,
.parm-tbl td,.ia-v,.mt,.rt-metrics .mt b{font-variant-numeric:tabular-nums}
.parm-tbl{border-radius:var(--r-2)}
.parm-tbl th{font-size:10.5px;letter-spacing:.2px}
.parm-tbl tr:last-child td{border-bottom:none}

/* —— 空状态：虚线更淡，底色轻微渐层 —— */
.ms-empty{
  border-color:#dde4f0;border-radius:var(--r-4);
  background:linear-gradient(180deg,#fbfcff,#f7f9fd);
}
body.theme-dark .ms-empty{background:linear-gradient(180deg,#0f1626,#0c1220)}

/* —— 顶栏与侧栏：细线更轻，名字字重略提 —— */
.tb-name{font-weight:620;letter-spacing:.1px}
.side{border-right-color:#e8ecf4}

/* —— 投屏：卡片阴影更稳，左右留白更舒服 —— */
.pr-fig{border-radius:var(--r-4);border-color:var(--card-line);box-shadow:var(--shadow-2)}
body.theme-dark .pr-fig{box-shadow:none}

/* —— 深色主题：跟随上面几处调整 —— */
body.theme-dark .acard,body.theme-dark .entry{border-color:#22304a}
body.theme-dark .entry:hover{border-color:#3a5a99;box-shadow:0 2px 6px rgba(0,0,0,.3), 0 22px 48px -26px rgba(0,0,0,.7)}
body.theme-dark .chip{background:#1b2434;border-color:#2c3a50}
body.theme-dark .ms-empty{border-color:#2a3a58}
body.theme-dark ::selection{background:rgba(90,140,255,.28)}

/* —— 卡片类型识别：标题前一颗小色点，长结果流里一眼分得清 —— */
.acard>.acard-hd::before{
  content:'';width:6px;height:6px;border-radius:50%;flex:0 0 6px;
  background:#b9c6dd;margin-right:1px;
}
.acard.fig>.acard-hd::before{background:#2bb98a}
.acard.item>.acard-hd::before{background:#2f6bff}
.acard.gen>.acard-hd::before{background:#2f6bff}
.acard.rag>.acard-hd::before{background:#7a5cf0}
.acard.rt>.acard-hd::before{background:#e8a33d}
.acard.rev>.acard-hd::before{background:#8b98ad}
.acard.item-review>.acard-hd::before,
.acard.brief-review-note>.acard-hd::before{background:#c65b4e}

/* —— 相似真题：条目更像引文，正文不再挤成一坨 —— */
.rag-i{border-color:#eef0f8;border-radius:var(--r-3);padding:9px 11px;margin-bottom:8px}
.rag-t{font-size:11.5px;line-height:1.85}
.item-phr .ip-i{padding:4px 0}

/* —— 用户气泡：更轻的底色 + 一点边线，长文本更透气 —— */
.ubub{background:#eef2f9;border:1px solid #e4eaf4;border-radius:15px 15px 5px 15px;padding:10px 14px;line-height:1.8}
body.theme-dark .ubub{background:#182132;border-color:#243147}

/* —— 侧栏空态：给一句提示一个容器，别让它悬在空白里 —— */
.bs-empty{
  margin:14px 12px;padding:18px 14px;border:1px dashed #dfe6f2;border-radius:var(--r-3);
  background:#fbfcff;color:#93a0b8;
}
body.theme-dark .bs-empty{background:#0f1626;border-color:#26344d}

/* —— 欢迎页：标题略提、说明放宽 —— */
.hello-t{font-size:20px;font-weight:680;letter-spacing:-.3px}
.hello-s{max-width:560px}
.hchip{border-radius:var(--r-3)}
.hchip:hover{box-shadow:0 4px 14px -10px rgba(20,32,60,.5)}

/* —— 中文段落排版：避免末行只剩一两个字（孤字） —— */
.hello-s,.say,.ms-empty p,.acard p{text-wrap:pretty}
.hello-s{max-width:540px}

/* —— 首页：卡片宽度收一点，文字与箭头不再隔着一大片空白 —— */
.entries{max-width:900px}

/* —— 首页整体块宽收齐：标题、说明、卡片同一列宽，右侧不再空一块 —— */
.home-body,.home-foot{max-width:1040px}
.entries{max-width:100%}

/* ============ 去 AI 味：把"落地页"的装饰收掉，回到工具感 ============ */
/* 1. 品牌标记去掉蓝绿渐变，改实色 + 细内描边（渐变是典型的模板味） */
.home-logo,.tb-logo,.hello-av,.av{
  background:#22417f;box-shadow:none;color:#fff;
}
.home-logo{box-shadow:inset 0 0 0 1px rgba(255,255,255,.14)}
.hello-av{box-shadow:inset 0 0 0 1px rgba(255,255,255,.14)}
.home-logo{font-size:15px;font-weight:600}
.hello-av{font-size:17px;font-weight:600}
.tb-logo{font-size:11px;font-weight:600}
.av{font-size:11px;font-weight:600}

/* 2. 主按钮回到实色，不再发光 */
.btn.primary{
  background:var(--blue);border-color:var(--blue);
  box-shadow:0 1px 2px rgba(20,32,60,.10);
}
.btn.primary:hover{
  background:#2559e0;border-color:#2559e0;
  box-shadow:0 1px 3px rgba(20,32,60,.14);
}

/* 4. 首页主标题区已删除，装饰性强调线随之清掉 */

/* 5. 功能药丸改成一行说明文字：不再是小圆角标签堆 */
.entry .chips{gap:0;margin-top:9px}
.entry .chip{
  background:none;border:none;padding:0;border-radius:0;
  color:var(--text-3);font-size:11.5px;line-height:1.6;
}
.entry .chip+.chip::before{content:'·';margin:0 7px;color:#c9d2e2}

/* 6. 卡片悬停收敛：轻微描边变化，不再整块浮起 */
.entry{border-radius:var(--r-4)}
.entry:hover{
  transform:none;border-color:#cdd9ef;
  box-shadow:0 1px 3px rgba(20,32,60,.06);
}
.entry .go{transition:color .18s var(--ease)}
.entry:hover .go{transform:none;color:#8ea6cf}
/* 悬停仍要有一点回应：底色微亮 + 箭头轻推 2px */
.entry:hover{background:#fdfdff}
.entry:hover .go{transform:translateX(2px)}
body.theme-dark .entry:hover{background:#141c2c}

/* 首页去掉主标题后，菜单贴着顶栏排，不再悬在页面正中 */
.home-body{justify-content:flex-start;padding-top:84px}