/* 智慧课堂助手 · 共享样式（深紫玻璃拟态，沿用原课堂原型的设计语言） */
/* ===================== tokens ===================== */
:root{
  --ink:#f2f0fb; --ink2:#bdb6de; --ink3:#8c86b3; --ink4:#6a6590;
  --pri:#7b5cf0; --pri2:#9d7cf8; --pri3:#c0abfd;
  --pri-dim:rgba(123,92,240,.18); --pri-line:rgba(141,112,246,.46);
  --ok:#2fd39a; --ok-dim:rgba(47,211,154,.14);
  --warn:#ffb648; --warn-dim:rgba(255,182,72,.14);
  --err:#ff7b7b; --err-dim:rgba(255,123,123,.14);
  --cy:#49d2e6; --cy-dim:rgba(73,210,230,.14);
  --pink:#f472d0; --pink-dim:rgba(244,114,208,.14);
  --gold:#ffd166;
  --pane:rgba(255,255,255,.055);
  --pane2:rgba(255,255,255,.038);
  --pane3:rgba(255,255,255,.075);
  --line:rgba(255,255,255,.10);
  --line2:rgba(255,255,255,.17);
  --r:20px; --r2:14px; --r3:10px;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
  --shadow:0 18px 50px rgba(8,6,30,.45);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;color:var(--ink);overflow-x:auto;overflow-y:hidden;
  font:14px/1.7 "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  -webkit-font-smoothing:antialiased;
  background:
    radial-gradient(1100px 760px at 12% -12%, #4b3d94 0%, rgba(75,61,148,0) 62%),
    radial-gradient(900px 620px at 88% 108%, #26407d 0%, rgba(38,64,125,0) 58%),
    radial-gradient(700px 560px at 72% 6%, #3a2f74 0%, rgba(58,47,116,0) 60%),
    linear-gradient(162deg,#2c2760 0%,#211e46 44%,#1a1937 100%);
  background-attachment:fixed;
}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea{font-family:inherit}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.16);border-radius:8px}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,.26)}
::-webkit-scrollbar-track{background:transparent}
b,strong{color:#fff;font-weight:600}
code{font:12px/1.5 var(--mono);background:rgba(255,255,255,.08);border:1px solid var(--line);border-radius:5px;padding:1px 5px;color:var(--pri3)}

/* ===================== frame ===================== */
.app{height:100vh;display:flex;flex-direction:column;min-width:1160px}
.topbar{
  flex:0 0 56px;display:flex;align-items:center;gap:14px;padding:0 20px;
  background:rgba(255,255,255,.04);border-bottom:1px solid var(--line);backdrop-filter:blur(18px);
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:15px;letter-spacing:.3px;white-space:nowrap}
.brand .lg{width:28px;height:28px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(135deg,#8b6bf5,#5f8cf8);box-shadow:0 4px 14px rgba(123,92,240,.5)}
.brand .lg svg{width:16px;height:16px}
.brand .v{font-size:10px;font-weight:700;color:var(--pri3);background:var(--pri-dim);border:1px solid var(--pri-line);padding:1px 7px;border-radius:20px;letter-spacing:.4px}
.tdiv{width:1px;height:20px;background:var(--line2)}
.course{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--ink2);min-width:0;white-space:nowrap}
.course b{color:var(--ink);font-weight:600}
.course .cls{font-size:11px;color:var(--ink3);border:1px solid var(--line2);border-radius:5px;padding:1px 7px}
.spacer{flex:1}
.cstate{display:flex;align-items:center;gap:7px;font-size:12px;color:var(--ink2);white-space:nowrap;
  background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:20px;padding:4px 12px}
.cstate .dot{width:7px;height:7px;border-radius:50%;background:var(--ink4)}
.cstate.live .dot{background:var(--ok);box-shadow:0 0 0 4px var(--ok-dim);animation:bp 1.6s infinite}
.cstate.done .dot{background:var(--ink4)}
@keyframes bp{0%,100%{opacity:1}50%{opacity:.35}}
.tbtn{font-size:12.5px;color:var(--ink2);border:1px solid var(--line2);border-radius:9px;padding:5px 13px;transition:.15s;white-space:nowrap}
.tbtn:hover{color:#fff;background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.3)}
.tbtn.on{color:#fff;background:var(--pri-dim);border-color:var(--pri-line)}
.tbtn.acc{color:#fff;background:linear-gradient(135deg,var(--pri),var(--pri2));border-color:transparent;box-shadow:0 5px 16px rgba(123,92,240,.4)}
.tbtn.acc:hover{filter:brightness(1.1)}
.clock{font:600 13px/1 var(--mono);color:var(--ink);background:rgba(255,255,255,.06);border:1px solid var(--line);border-radius:8px;padding:6px 10px}

.body{flex:1;display:flex;gap:18px;padding:16px 20px 20px;min-height:0}
.pane{background:var(--pane);border:1px solid var(--line);border-radius:var(--r);backdrop-filter:blur(22px);box-shadow:var(--shadow)}

/* ===================== stage ===================== */
.stage{flex:1;min-width:0;display:flex;flex-direction:column;overflow:hidden;position:relative}
.st-head{flex:0 0 auto;display:flex;align-items:center;gap:10px;padding:14px 20px;border-bottom:1px solid var(--line)}
.st-head .t{font-size:15px;font-weight:600;letter-spacing:.3px;white-space:nowrap}
.st-head .sub{font-size:12px;color:var(--ink3);white-space:nowrap}
.st-tabs{display:flex;gap:4px;margin-left:auto}
.st-tab{font-size:12.5px;color:var(--ink3);padding:5px 12px;border-radius:8px;transition:.15s;white-space:nowrap}
.st-tab:hover{color:var(--ink);background:rgba(255,255,255,.06)}
.st-tab.on{color:#fff;background:rgba(255,255,255,.1);box-shadow:inset 0 0 0 1px var(--line2)}
.st-tab .n{font:600 10px/1 var(--mono);color:var(--pri3);background:var(--pri-dim);border-radius:10px;padding:2px 5px;margin-left:5px}
.st-body{flex:1;overflow:auto;padding:22px 24px 26px}
.st-body.center{display:flex;align-items:center;justify-content:center}

/* ---- 课前引导（还原原型） ---- */
.guide{width:100%;max-width:760px}
.g-title{display:flex;align-items:center;justify-content:center;gap:14px;margin:0 0 46px;
  font-size:30px;font-weight:600;letter-spacing:8px}
.g-title .em{font-size:30px;filter:drop-shadow(0 4px 10px rgba(0,0,0,.4))}
.g-rows{display:flex;flex-direction:column;gap:26px}
.g-row{display:flex;align-items:center;gap:16px}
.g-ic{width:34px;height:34px;flex:0 0 34px;border-radius:10px;display:grid;place-items:center;box-shadow:0 5px 14px rgba(0,0,0,.28)}
.g-ic svg{width:19px;height:19px}
.g-ic.a{background:linear-gradient(140deg,#7f8cff,#5b6cf5)}
.g-ic.b{background:linear-gradient(140deg,#8e7bfb,#6f5af0)}
.g-ic.c{background:linear-gradient(140deg,#b07bfb,#8154f0)}
.g-tx{flex:1;font-size:17px;letter-spacing:.6px;color:#efeafd}
.g-tx b{font-weight:500;color:#fff}
.g-btn{flex:0 0 auto;font-size:14px;color:#e7e2fb;border:1px solid var(--line2);border-radius:22px;padding:8px 22px;
  background:rgba(255,255,255,.05);transition:.16s}
.g-btn:hover{background:rgba(123,92,240,.28);border-color:var(--pri-line);color:#fff;transform:translateY(-1px)}
.g-hint{margin-top:44px;text-align:center;font-size:12.5px;color:var(--ink4)}
.g-hint b{color:var(--pri3);font-weight:500}

/* ---- 通用舞台块 ---- */
.sec{margin-bottom:22px}
.sec:last-child{margin-bottom:0}
.sec-h{display:flex;align-items:center;gap:9px;margin-bottom:11px}
.sec-h .bar{width:3px;height:14px;border-radius:2px;background:linear-gradient(180deg,var(--pri2),var(--pri))}
.sec-h .t{font-size:14px;font-weight:600;letter-spacing:.3px}
.sec-h .c{font:600 11px/1 var(--mono);color:var(--ink3)}
.sec-h .ai{font-size:10.5px;color:var(--pri3);background:var(--pri-dim);border:1px solid var(--pri-line);border-radius:20px;padding:1px 8px}
.sec-h .ref{margin-left:auto;font-size:11px;color:var(--ink4);border:1px dashed var(--line2);border-radius:6px;padding:1px 7px;cursor:pointer}
.sec-h .ref:hover{color:var(--pri3);border-color:var(--pri-line)}

.empty{padding:44px 0;text-align:center;color:var(--ink4);font-size:13px}
.empty .big{font-size:30px;opacity:.5;margin-bottom:10px}

/* 教案条目 */
.pl-group{background:var(--pane2);border:1px solid var(--line);border-radius:var(--r2);padding:14px 16px;margin-bottom:10px}
.pl-group .gh{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink2);margin-bottom:9px}
.pl-group .gh .tag{font-size:10.5px;padding:1px 8px;border-radius:20px;border:1px solid}
.tag-k{color:#8ab4ff;background:rgba(138,180,255,.12);border-color:rgba(138,180,255,.35)}
.tag-s{color:#6ee7c0;background:var(--ok-dim);border-color:rgba(47,211,154,.35)}
.tag-a{color:#ffca7a;background:var(--warn-dim);border-color:rgba(255,182,72,.35)}
.tag-z{color:#f9a8d4;background:var(--pink-dim);border-color:rgba(244,114,208,.35)}
.pl-li{display:flex;gap:10px;padding:5px 0;font-size:13.5px;color:#e6e2f7;line-height:1.75}
.pl-li .no{flex:0 0 22px;font:600 11.5px/1.7 var(--mono);color:var(--pri3)}
.pl-li.fresh{animation:pop .5s ease both}
@keyframes pop{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.pl-text{font-size:13.5px;color:#e6e2f7;line-height:1.85;white-space:pre-wrap}

/* 资源 / 活动 列表 */
.row{display:flex;align-items:center;gap:12px;padding:11px 14px;background:var(--pane2);
  border:1px solid var(--line);border-radius:var(--r2);margin-bottom:9px;transition:.16s}
.row:hover{background:rgba(255,255,255,.07);border-color:var(--line2)}
.row.fresh{animation:pop .5s ease both}
.row .ic{width:34px;height:34px;flex:0 0 34px;border-radius:9px;display:grid;place-items:center;font-size:15px}
.row .mid{flex:1;min-width:0}
.row .nm{font-size:13.5px;color:#fff;font-weight:500;display:flex;align-items:center;gap:7px;flex-wrap:wrap}
.row .mt{font-size:11.5px;color:var(--ink3);margin-top:2px;display:flex;gap:10px;flex-wrap:wrap}
.row .rt{flex:0 0 auto;text-align:right}
.badge{font-size:10.5px;padding:1px 8px;border-radius:20px;border:1px solid;white-space:nowrap}
.b-ai{color:var(--pri3);background:var(--pri-dim);border-color:var(--pri-line)}
.b-ok{color:#6ee7c0;background:var(--ok-dim);border-color:rgba(47,211,154,.35)}
.b-run{color:#8ab4ff;background:rgba(138,180,255,.12);border-color:rgba(138,180,255,.35)}
.b-wait{color:var(--ink3);background:rgba(255,255,255,.05);border-color:var(--line2)}
.b-warn{color:#ffca7a;background:var(--warn-dim);border-color:rgba(255,182,72,.35)}
.b-err{color:#ffa0a0;background:var(--err-dim);border-color:rgba(255,123,123,.35)}
.b-cy{color:#8fe6f2;background:var(--cy-dim);border-color:rgba(73,210,230,.35)}
.b-pink{color:#f9a8d4;background:var(--pink-dim);border-color:rgba(244,114,208,.35)}
.prog{width:92px;height:5px;border-radius:4px;background:rgba(255,255,255,.1);overflow:hidden;margin-top:6px}
.prog i{display:block;height:100%;border-radius:4px;background:linear-gradient(90deg,var(--pri),var(--pri2));transition:width .6s}
.prog.ok i{background:linear-gradient(90deg,#1fb98a,var(--ok))}
.pnum{font:600 12px/1 var(--mono);color:var(--ink2)}

/* 数据看板 */
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:16px}
.kpi{background:var(--pane2);border:1px solid var(--line);border-radius:var(--r2);padding:12px 14px}
.kpi .v{font:600 22px/1.2 var(--mono);color:#fff}
.kpi .v small{font-size:12px;color:var(--ink3);font-weight:400;margin-left:3px}
.kpi .l{font-size:11.5px;color:var(--ink3);margin-top:4px}
.kpi.ok .v{color:var(--ok)}.kpi.warn .v{color:var(--warn)}.kpi.err .v{color:var(--err)}.kpi.pri .v{color:var(--pri2)}

table.dt{width:100%;border-collapse:collapse;font-size:12.5px}
table.dt th{text-align:left;font-weight:500;color:var(--ink3);font-size:11.5px;padding:7px 10px;border-bottom:1px solid var(--line2);white-space:nowrap}
table.dt td{padding:8px 10px;border-bottom:1px solid var(--line);color:#e2def3}
table.dt tr:last-child td{border-bottom:0}
table.dt td.num,table.dt th.num{text-align:right;font-family:var(--mono);font-size:12px}
table.dt tbody tr:hover td{background:rgba(255,255,255,.04)}

/* 工具产物 */
.tool-card{background:var(--pane2);border:1px solid var(--line);border-radius:var(--r2);padding:16px;margin-bottom:12px}
.tool-card .th{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.tool-card .th .ic{width:32px;height:32px;border-radius:9px;display:grid;place-items:center;font-size:15px}
.tool-card .th .nm{font-size:13.5px;font-weight:600}
.tool-card .th .mt{font-size:11.5px;color:var(--ink3)}
.wave{display:flex;align-items:center;gap:3px;height:46px;padding:0 2px}
.wave i{flex:1;background:linear-gradient(180deg,var(--pri2),var(--pri));border-radius:2px;opacity:.85}
.mm-wrap{overflow:auto}
.mm-wrap svg{display:block}
.hep{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}
.hep .pg{background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:10px;padding:10px;min-height:86px}
.hep .pg .pt{font-size:11.5px;color:#fff;font-weight:500;margin-bottom:5px}
.hep .pg .pd{font-size:10.5px;color:var(--ink3);line-height:1.6}
.hep .pg .int{margin-top:7px;font-size:10px;color:var(--cy);border:1px solid rgba(73,210,230,.35);background:var(--cy-dim);border-radius:20px;padding:1px 7px;display:inline-block}

/* ===================== 右栏 ===================== */
.side{width:clamp(400px,29vw,470px);flex:0 0 auto;display:flex;flex-direction:column;gap:14px;min-height:0}
.tools{flex:0 0 auto;display:flex;align-items:center;padding:12px 6px}
.tool{flex:1;display:flex;flex-direction:column;align-items:center;gap:7px;padding:4px 0;border-radius:12px;transition:.16s}
.tool:hover{background:rgba(255,255,255,.07)}
.tool .ti{width:44px;height:44px;border-radius:13px;display:grid;place-items:center;box-shadow:0 7px 18px rgba(0,0,0,.34);position:relative}
.tool .ti svg{width:24px;height:24px}
.tool .tl{font-size:12px;color:#e7e3f8;letter-spacing:.4px;white-space:nowrap}
.tool .dv{width:1px;height:26px;background:var(--line2)}
.tdivcol{width:1px;height:30px;background:var(--line2);flex:0 0 1px}
.ti-a{background:linear-gradient(140deg,#a7d8ff,#4d9bf0)}
.ti-b{background:linear-gradient(140deg,#ffd37a,#f0973f)}
.ti-c{background:linear-gradient(140deg,#ff9fd0,#7d8cf5)}
.ti-d{background:linear-gradient(140deg,#c3d2ea,#6f86b8)}
.ti-e{background:linear-gradient(140deg,#a99bff,#6355e6)}

.asst{flex:1;display:flex;flex-direction:column;min-height:0;overflow:hidden;position:relative}
.as-head{flex:0 0 auto;display:flex;align-items:center;gap:8px;padding:13px 16px;border-bottom:1px solid var(--line)}
.as-head .t{font-size:14.5px;font-weight:600;letter-spacing:.5px}
.as-head .acts{margin-left:auto;display:flex;align-items:center;gap:13px}
.as-act{display:flex;align-items:center;gap:5px;font-size:12px;color:var(--ink2);transition:.15s}
.as-act:hover{color:#fff}
.as-act svg{width:13px;height:13px;opacity:.8}
.as-x{position:absolute;top:-6px;right:-6px;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;
  background:rgba(40,34,80,.9);border:1px solid var(--line2);color:var(--ink2);z-index:4}
.as-x:hover{color:#fff;background:rgba(60,50,110,.95)}

.msgs{flex:1;overflow:auto;padding:16px 16px 6px;scroll-behavior:smooth}
.msgs::-webkit-scrollbar{width:6px}

/* 欢迎态 */
.welc{padding:6px 2px 4px}
.welc .hi{display:flex;gap:11px;margin-bottom:14px}
.welc .tx{font-size:13.5px;color:#e9e5fa;line-height:1.8}
.welc .tx b{color:#fff}
.qgroup{margin-top:14px}
.qgroup .ql{font-size:11.5px;color:var(--ink4);margin-bottom:7px;letter-spacing:.5px}
.qchips{display:flex;flex-wrap:wrap;gap:7px}
.qchip{font-size:12px;color:#ddd6f7;background:rgba(255,255,255,.06);border:1px solid var(--line2);
  border-radius:18px;padding:5px 12px;transition:.15s;text-align:left}
.qchip:hover{background:var(--pri-dim);border-color:var(--pri-line);color:#fff;transform:translateY(-1px)}
.qchip .ch{font:600 10px/1 var(--mono);color:var(--ink4);margin-left:6px}

/* 消息 */
.m{margin-bottom:16px;animation:fade .32s ease both}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.m.u{display:flex;justify-content:flex-end;gap:9px;align-items:flex-start}
.m.u .bub{max-width:76%;background:rgba(255,255,255,.07);border:1px solid var(--line2);border-radius:16px;
  padding:8px 14px;font-size:13.5px;color:#fff;line-height:1.7}
.m.u .av{width:32px;height:32px;flex:0 0 32px;border-radius:50%;background:linear-gradient(140deg,#8a7ad8,#5c4fa8);
  display:grid;place-items:center;font-size:15px;overflow:hidden}
.m.a{display:flex;gap:9px;align-items:flex-start}
.m.a .av{width:32px;height:32px;flex:0 0 32px;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(140deg,#7f6df3,#4f7ef0);box-shadow:0 4px 12px rgba(96,86,230,.45)}
.m.a .av svg{width:18px;height:18px}
.m.a .co{flex:1;min-width:0}
.tx{font-size:13.5px;color:#e9e5fa;line-height:1.8;word-break:break-word}
.tx b{color:#fff}
.cursor{display:inline-block;width:6px;height:14px;background:var(--pri2);vertical-align:-2px;animation:bk .8s steps(1) infinite}
@keyframes bk{0%,50%{opacity:1}51%,100%{opacity:0}}

/* 执行清单（截图同款 ✔ 完成xx） */
.ckl{margin:10px 0 4px;display:flex;flex-direction:column;gap:9px}
.ck{display:flex;align-items:center;gap:9px;font-size:13px;color:#ddd6f7;opacity:.35;transition:.3s}
.ck.on{opacity:1}
.ck .cc{width:19px;height:19px;flex:0 0 19px;border-radius:50%;display:grid;place-items:center;
  background:rgba(255,255,255,.1);border:1px solid var(--line2);transition:.3s}
.ck.on .cc{background:linear-gradient(140deg,#7d6bf4,#5b7cf0);border-color:transparent;box-shadow:0 3px 9px rgba(110,96,240,.5)}
.ck .cc svg{width:11px;height:11px;opacity:0;transition:.25s}
.ck.on .cc svg{opacity:1}
.ck .api{font:10.5px/1 var(--mono);color:var(--ink4);margin-left:auto;white-space:nowrap}

/* 确认卡（截图同款） */
.cfm{margin:10px 0 2px;background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:var(--r2);overflow:hidden}
.cfm .ch{padding:11px 15px 0;font-size:13.5px;font-weight:600;color:#fff;display:flex;align-items:center;flex-wrap:wrap;gap:6px 8px}
.cfm .ch .tp{font-size:10.5px;font-weight:400;color:var(--pri3);background:var(--pri-dim);border:1px solid var(--pri-line);border-radius:20px;padding:1px 8px}
.cfm .cb{padding:11px 15px 14px;display:flex;flex-direction:column;gap:12px}
.fd{display:flex;flex-direction:column;gap:7px}
.fd .fl{font-size:11.5px;color:var(--ink3);display:flex;align-items:center;gap:6px}
.fd .fl .must{color:var(--err)}
.fd .fl .df{font-size:10px;color:var(--ink4);border:1px dashed var(--line2);border-radius:5px;padding:0 5px}
.fd .fv{font-size:13px;color:#fff}
.fin{width:100%;background:rgba(255,255,255,.06);border:1px solid var(--line2);border-radius:9px;
  padding:7px 11px;font-size:13px;color:#fff;outline:none;transition:.15s;resize:vertical}
.fin:focus{border-color:var(--pri-line);background:rgba(123,92,240,.12)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chp{font-size:12.5px;color:#d6cff5;background:rgba(255,255,255,.055);border:1px solid var(--line2);
  border-radius:9px;padding:7px 16px;transition:.16s}
.chp:hover{background:rgba(255,255,255,.1);color:#fff}
.chp.on{color:#fff;background:linear-gradient(135deg,#7b5cf0,#9b6ef7);border-color:transparent;box-shadow:0 6px 16px rgba(123,92,240,.42)}
.sws{display:flex;flex-wrap:wrap;gap:8px 16px}
.sw{display:flex;align-items:center;gap:8px;font-size:12.5px;color:#d6cff5}
.sw .tg{width:32px;height:18px;border-radius:20px;background:rgba(255,255,255,.14);position:relative;transition:.18s;flex:0 0 32px}
.sw .tg::after{content:"";position:absolute;top:2px;left:2px;width:14px;height:14px;border-radius:50%;background:#fff;transition:.18s}
.sw.on .tg{background:linear-gradient(135deg,#7b5cf0,#9b6ef7)}
.sw.on .tg::after{left:16px}
.btns{display:flex;gap:10px;margin-top:2px}
.bt{font-size:13px;border-radius:10px;padding:8px 22px;transition:.16s}
.bt.p{color:#fff;background:linear-gradient(135deg,#7b5cf0,#9b6ef7);box-shadow:0 6px 18px rgba(123,92,240,.42)}
.bt.p:hover{filter:brightness(1.1);transform:translateY(-1px)}
.bt.g{color:#cfc8ee;border:1px solid var(--line2);background:rgba(255,255,255,.04)}
.bt.g:hover{color:#fff;background:rgba(255,255,255,.09)}
.bt[disabled]{opacity:.42;pointer-events:none}
.cfm.settled{opacity:.72}
.cfm .verdict{padding:8px 15px;font-size:12px;color:var(--ink3);border-top:1px solid var(--line);background:rgba(0,0,0,.14)}
.cfm .verdict b{color:var(--pri3);font-weight:500}

/* 结果卡 */
.rc{margin:10px 0 2px;background:rgba(255,255,255,.045);border:1px solid var(--line);border-radius:var(--r2);overflow:hidden}
.rc .rh{display:flex;align-items:center;flex-wrap:wrap;gap:6px 8px;padding:10px 14px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.03)}
.rc .rh .k{font-size:10.5px;padding:1px 8px;border-radius:20px;border:1px solid}
.rc .rh .t{font-size:13px;font-weight:600;color:#fff;flex:1 1 auto;min-width:120px;line-height:1.5}
.rc .rh .api{font:10px/1 var(--mono);color:var(--ink4);flex:0 0 auto;margin-left:auto}
.rc .rb{padding:12px 14px;display:flex;flex-direction:column;gap:11px}
.k-tool{color:var(--cy);background:var(--cy-dim);border-color:rgba(73,210,230,.35)}
.k-rep{color:var(--pri3);background:var(--pri-dim);border-color:var(--pri-line)}
.k-warn{color:#ffca7a;background:var(--warn-dim);border-color:rgba(255,182,72,.35)}
.k-err{color:#ffa0a0;background:var(--err-dim);border-color:rgba(255,123,123,.35)}
.k-ok{color:#6ee7c0;background:var(--ok-dim);border-color:rgba(47,211,154,.35)}
.sts{display:grid;gap:8px}
.sts .s{background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:10px;padding:8px 10px}
.sts .s .v{font:600 17px/1.25 var(--mono);color:#fff}
.sts .s .v small{font-size:11px;color:var(--ink3);font-weight:400;margin-left:2px}
.sts .s .l{font-size:11px;color:var(--ink3);margin-top:2px}
.sts .s.ok .v{color:var(--ok)}.sts .s.warn .v{color:var(--warn)}.sts .s.err .v{color:var(--err)}
.sts .s.pri .v{color:var(--pri2)}.sts .s.cy .v{color:var(--cy)}
.sl{font-size:11.5px;color:var(--ink3);letter-spacing:.4px;display:flex;align-items:center;gap:7px}
.sl::after{content:"";flex:1;height:1px;background:var(--line)}
.kv{display:flex;flex-direction:column;gap:6px}
.kv .r{display:flex;gap:10px;font-size:12.5px}
.kv .r .k{flex:0 0 96px;color:var(--ink3)}
.kv .r .v{flex:1;color:#e6e2f7;min-width:0}
.lst{display:flex;flex-direction:column;gap:6px}
.lst .li{display:flex;gap:8px;font-size:12.5px;color:#e0dcf4;line-height:1.7}
.lst .li .d{flex:0 0 5px;height:5px;border-radius:50%;background:var(--pri2);margin-top:8px}
.nt{font-size:12px;color:var(--ink2);background:rgba(123,92,240,.1);border-left:2px solid var(--pri);
  border-radius:0 8px 8px 0;padding:8px 11px;line-height:1.7}
.nt.w{background:var(--warn-dim);border-left-color:var(--warn)}
.nt.e{background:var(--err-dim);border-left-color:var(--err)}
.nt.o{background:var(--ok-dim);border-left-color:var(--ok)}
table.mt{width:100%;border-collapse:collapse;font-size:12px}
table.mt th{text-align:left;font-weight:500;color:var(--ink3);font-size:11px;padding:5px 8px;border-bottom:1px solid var(--line2);white-space:nowrap}
table.mt td{padding:6px 8px;border-bottom:1px solid var(--line);color:#e2def3}
table.mt tr:last-child td{border-bottom:0}
table.mt td.num,table.mt th.num{text-align:right;font-family:var(--mono)}
.bars{display:flex;flex-direction:column;gap:7px}
.bar{display:flex;align-items:center;gap:9px;font-size:12px}
.bar .bn{flex:0 0 96px;color:var(--ink2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bar .bt2{flex:1;height:7px;border-radius:4px;background:rgba(255,255,255,.09);overflow:hidden}
.bar .bt2 i{display:block;height:100%;border-radius:4px;width:0;transition:width .8s cubic-bezier(.2,.8,.3,1)}
.bar .bv{flex:0 0 46px;text-align:right;font:600 11.5px/1 var(--mono);color:var(--ink)}
.opts{display:flex;flex-wrap:wrap;gap:8px;margin-top:2px}
.opt{font-size:12.5px;color:#ddd6f7;background:rgba(255,255,255,.06);border:1px solid var(--line2);
  border-radius:9px;padding:6px 14px;transition:.16s}
.opt:hover{background:var(--pri-dim);border-color:var(--pri-line);color:#fff}
.opt.rec::before{content:"推荐";font-size:9.5px;color:var(--pri3);background:var(--pri-dim);
  border:1px solid var(--pri-line);border-radius:20px;padding:0 5px;margin-right:6px}
.opts.settled .opt{opacity:.4;pointer-events:none}
.opts.settled .opt.picked{opacity:1;border-color:var(--pri-line);background:var(--pri-dim);color:#fff}

/* 工具调用行 */
.tcall{display:flex;align-items:center;gap:9px;font-size:12px;color:var(--ink2);
  background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:9px;padding:6px 11px;margin:7px 0 2px}
.tcall .sp{width:13px;height:13px;flex:0 0 13px;border:2px solid rgba(255,255,255,.2);border-top-color:var(--pri2);
  border-radius:50%;animation:sp .7s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.tcall.done .sp{border:0;background:var(--ok-dim);color:var(--ok);display:grid;place-items:center;animation:none}
.tcall .nm{flex:1;min-width:0;color:#ded9f5}
.tcall .api{font:10px/1 var(--mono);color:var(--ink4)}
.tcall .ms{font:10px/1 var(--mono);color:var(--ok)}

/* 输入区 */
.inbox{flex:0 0 auto;margin:6px 14px 14px;background:rgba(255,255,255,.05);border:1px solid var(--line2);
  border-radius:16px;padding:11px 13px 9px;transition:.16s}
.inbox:focus-within{border-color:var(--pri-line);background:rgba(123,92,240,.1)}
.inbox textarea{width:100%;background:none;border:0;outline:none;color:#fff;font-size:13.5px;line-height:1.7;
  resize:none;height:44px;padding:0}
.inbox textarea::placeholder{color:var(--ink4)}
.inrow{display:flex;align-items:center;gap:8px;margin-top:4px}
.mdl{display:flex;align-items:center;gap:6px;font-size:11.5px;color:#cfc8ee;border:1px solid var(--line2);
  border-radius:20px;padding:3px 11px 3px 6px}
.mdl .lg{width:16px;height:16px;border-radius:5px;background:linear-gradient(135deg,#5b7cf0,#7b5cf0);display:grid;place-items:center}
.mdl .lg svg{width:10px;height:10px}
.inrow .sp2{flex:1}
.ibtn{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;color:var(--ink2);transition:.15s}
.ibtn:hover{color:#fff;background:rgba(255,255,255,.1)}
.ibtn svg{width:16px;height:16px}
.ibtn.send{background:rgba(255,255,255,.08);border:1px solid var(--line2)}
.ibtn.send:hover{background:linear-gradient(135deg,#7b5cf0,#9b6ef7);border-color:transparent;color:#fff}

/* 红点 */
.dotbadge{position:absolute;top:-2px;right:-2px;width:9px;height:9px;border-radius:50%;background:#ff5f5f;
  border:2px solid #2a2452;display:none}
.dotbadge.on{display:block;animation:bp 1.4s infinite}


/* ===================== 浮层 ===================== */
.toasts{position:fixed;top:70px;right:22px;z-index:90;display:flex;flex-direction:column;gap:9px;max-width:380px}
.toast{background:rgba(38,32,74,.96);border:1px solid var(--line2);border-radius:12px;padding:10px 14px;
  font-size:12.5px;color:#e9e5fa;box-shadow:0 12px 32px rgba(0,0,0,.42);display:flex;gap:9px;align-items:flex-start;
  animation:tin .3s ease both;backdrop-filter:blur(14px)}
@keyframes tin{from{opacity:0;transform:translateX(24px)}to{opacity:1;transform:none}}
.toast .ti2{flex:0 0 16px;margin-top:2px}
.toast.ok{border-color:rgba(47,211,154,.4)}
.toast.warn{border-color:rgba(255,182,72,.4)}
.toast.err{border-color:rgba(255,123,123,.4)}
.toast .go{margin-left:6px;color:var(--pri3);white-space:nowrap;text-decoration:underline;font-size:12px;cursor:pointer}

.mask{position:fixed;inset:0;background:rgba(10,8,26,.6);backdrop-filter:blur(3px);z-index:48;display:none}
.mask.on{display:block}
.drawer{position:fixed;top:0;bottom:0;right:0;width:min(640px,100vw);z-index:50;background:rgba(32,27,64,.98);
  backdrop-filter:blur(24px);display:flex;flex-direction:column;border-left:1px solid var(--line2);
  transform:translateX(100%);transition:transform .3s cubic-bezier(.3,.8,.3,1)}
.drawer.on{transform:none}
.drawer.wide{width:min(860px,100vw)}
.dw-h{flex:0 0 auto;display:flex;align-items:center;gap:10px;padding:16px 18px;border-bottom:1px solid var(--line)}
.dw-h .t{font-size:15px;font-weight:600}
.dw-h .s{font-size:11.5px;color:var(--ink3)}
.dw-h .x{margin-left:auto;width:28px;height:28px;border-radius:8px;display:grid;place-items:center;color:var(--ink2)}
.dw-h .x:hover{background:rgba(255,255,255,.1);color:#fff}
.dw-b{flex:1;overflow:auto;padding:14px 18px 22px}

/* 模态框 */
.modal-mask{position:fixed;inset:0;z-index:80;background:rgba(10,8,26,.62);backdrop-filter:blur(4px);
  display:flex;align-items:center;justify-content:center;padding:16px;animation:fade .2s ease both}
.modal{width:min(560px,100%);max-height:calc(100vh - 32px);display:flex;flex-direction:column;background:rgba(36,31,72,.99);
  border:1px solid var(--line2);border-radius:18px;box-shadow:0 30px 80px rgba(0,0,0,.5)}
.modal.w2{width:min(760px,100%)}.modal.w3{width:min(980px,100%)}
.modal-h{display:flex;align-items:center;gap:10px;padding:15px 18px;border-bottom:1px solid var(--line)}
.modal-h .t{font-size:15px;font-weight:600;flex:1;min-width:0}
.modal-h .x{width:28px;height:28px;border-radius:8px;display:grid;place-items:center;color:var(--ink2)}
.modal-h .x:hover{background:rgba(255,255,255,.1);color:#fff}
.modal-b{flex:1;overflow:auto;padding:16px 18px}
.modal-f{display:flex;justify-content:flex-end;gap:10px;padding:12px 18px;border-top:1px solid var(--line)}

/* 按钮 / 表单 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;font-size:13px;border-radius:10px;padding:7px 16px;
  transition:.16s;white-space:nowrap;color:#cfc8ee;border:1px solid var(--line2);background:rgba(255,255,255,.04)}
.btn:hover{color:#fff;background:rgba(255,255,255,.09)}
.btn.p{color:#fff;background:linear-gradient(135deg,#7b5cf0,#9b6ef7);border-color:transparent;box-shadow:0 6px 18px rgba(123,92,240,.38)}
.btn.p:hover{filter:brightness(1.1)}
.btn.ok{color:#fff;background:linear-gradient(135deg,#1fb98a,#2fd39a);border-color:transparent}
.btn.danger{color:#ffa0a0;border-color:rgba(255,123,123,.4);background:var(--err-dim)}
.btn.danger:hover{color:#fff;background:rgba(255,123,123,.3)}
.btn.sm{font-size:12px;padding:4px 11px;border-radius:8px}
.btn.xs{font-size:11.5px;padding:2px 9px;border-radius:7px}
.btn[disabled],.btn.busy{opacity:.45;pointer-events:none}
.link{color:var(--pri3);cursor:pointer;text-decoration:none}
.link:hover{color:#fff;text-decoration:underline}
select.fin{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink3) 50%),linear-gradient(135deg,var(--ink3) 50%,transparent 50%);
  background-position:calc(100% - 15px) 50%,calc(100% - 10px) 50%;background-size:5px 5px;background-repeat:no-repeat;padding-right:28px}
select.fin option{background:#2a2452;color:#fff}
input.fin[type=datetime-local],input.fin[type=number]{color-scheme:dark}
.frow{display:flex;flex-direction:column;gap:6px;margin-bottom:13px}
.frow>label,.flabel{font-size:12px;color:var(--ink3);display:flex;align-items:center;gap:6px}
.frow>label .must{color:var(--err)}
.fgrid{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}
.fhint{font-size:11.5px;color:var(--ink4)}
.ferr{font-size:12px;color:var(--err)}
.inline{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.check{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:#d6cff5;cursor:pointer}
.check input{accent-color:var(--pri)}

/* 「?」提示：说明文字都收在这里 */
.q{display:inline-grid;place-items:center;width:15px;height:15px;border-radius:50%;font:600 10px/1 var(--mono);
  color:var(--ink3);border:1px solid var(--line2);cursor:help;flex:0 0 15px}
.q:hover{color:#fff;border-color:var(--pri-line);background:var(--pri-dim)}
.tipfloat{position:fixed;z-index:100;max-width:320px;background:rgba(24,20,52,.98);border:1px solid var(--line2);border-radius:10px;
  padding:8px 11px;font-size:12px;line-height:1.7;color:#e6e2f7;box-shadow:0 12px 30px rgba(0,0,0,.45);pointer-events:none;white-space:pre-wrap}

/* 上传框 */
.drop{border:1.5px dashed var(--line2);border-radius:14px;padding:22px;text-align:center;color:var(--ink3);font-size:13px;
  transition:.16s;cursor:pointer;background:rgba(255,255,255,.025)}
.drop:hover,.drop.over{border-color:var(--pri-line);background:var(--pri-dim);color:#fff}
.drop b{color:var(--pri3)}
.upl{display:flex;flex-direction:column;gap:6px;margin-top:10px}
.upl .it{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--ink2)}
.upl .it .nm{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.upl .bar0{width:120px;height:5px;border-radius:4px;background:rgba(255,255,255,.1);overflow:hidden}
.upl .bar0 i{display:block;height:100%;background:linear-gradient(90deg,var(--pri),var(--pri2));width:0;transition:width .2s}

/* 加载 */
.spin{display:inline-block;width:14px;height:14px;border:2px solid rgba(255,255,255,.2);border-top-color:var(--pri2);
  border-radius:50%;animation:sp .7s linear infinite;vertical-align:-2px}
.loading{padding:40px 0;text-align:center;color:var(--ink3);font-size:13px}

/* markdown 渲染 */
.md{font-size:13.5px;color:#e9e5fa;line-height:1.8;word-break:break-word}
.md p{margin:0 0 8px}.md p:last-child{margin-bottom:0}
.md h1,.md h2,.md h3,.md h4{margin:12px 0 6px;color:#fff;font-weight:600;line-height:1.5}
.md h1{font-size:16px}.md h2{font-size:15px}.md h3{font-size:14px;color:var(--pri3)}.md h4{font-size:13.5px}
.md h1:first-child,.md h2:first-child,.md h3:first-child{margin-top:0}
.md ul,.md ol{margin:0 0 8px;padding-left:20px}
.md li{margin:2px 0}
.md table{width:100%;border-collapse:collapse;font-size:12px;margin:6px 0 10px}
.md th{text-align:left;font-weight:500;color:var(--ink3);padding:5px 8px;border-bottom:1px solid var(--line2)}
.md td{padding:5px 8px;border-bottom:1px solid var(--line);color:#e2def3}
.md hr{border:0;border-top:1px solid var(--line);margin:10px 0}
.md blockquote{margin:6px 0;padding:4px 10px;border-left:2px solid var(--pri);color:var(--ink2);background:rgba(123,92,240,.08)}

/* 小标签 / 计数 */
.pill{font-size:11px;color:var(--ink2);border:1px solid var(--line2);border-radius:20px;padding:1px 9px;white-space:nowrap}
.muted{color:var(--ink3)}.dim{color:var(--ink4)}
.mono{font-family:var(--mono)}
.right{margin-left:auto}
.row .acts{display:flex;gap:6px;flex:0 0 auto;align-items:center}
.clickable{cursor:pointer}
.hide{display:none!important}

/* 菜单 */
.menu{position:fixed;z-index:85;min-width:150px;background:rgba(36,31,72,.99);border:1px solid var(--line2);border-radius:12px;
  padding:6px;box-shadow:0 16px 40px rgba(0,0,0,.5)}
.menu button{display:block;width:100%;text-align:left;font-size:13px;color:#ddd6f7;padding:7px 12px;border-radius:8px}
.menu button:hover{background:rgba(255,255,255,.08);color:#fff}
.menu .sep{height:1px;background:var(--line);margin:4px 0}

/* 用户胶囊 */
.who{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink2);cursor:pointer;padding:4px 8px;border-radius:10px}
.who:hover{background:rgba(255,255,255,.06);color:#fff}
.who .av{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font-size:12px;color:#fff;
  background:linear-gradient(140deg,#8a7ad8,#5c4fa8)}

/* 脑图 / 交互式课件播放器 */
.cw{display:flex;flex-direction:column;gap:12px}
.cw-stage{min-height:260px;background:rgba(255,255,255,.045);border:1px solid var(--line);border-radius:16px;padding:22px 26px}
.cw-stage h3{margin:0 0 12px;font-size:18px;color:#fff}
.cw-nav{display:flex;align-items:center;gap:10px}
.cw-dots{display:flex;gap:5px;flex:1;justify-content:center;flex-wrap:wrap}
.cw-dots i{width:7px;height:7px;border-radius:50%;background:rgba(255,255,255,.18);cursor:pointer}
.cw-dots i.on{background:var(--pri2)}
.cw-q{margin-top:14px;padding:14px;border-radius:12px;background:rgba(123,92,240,.1);border:1px solid var(--pri-line)}
.cw-q .qq{font-size:14px;color:#fff;margin-bottom:10px}
.cw-opt{display:block;width:100%;text-align:left;margin:6px 0;padding:8px 12px;border-radius:9px;border:1px solid var(--line2);
  background:rgba(255,255,255,.04);font-size:13px;color:#e6e2f7}
.cw-opt:hover{background:rgba(255,255,255,.09)}
.cw-opt.right{border-color:rgba(47,211,154,.6);background:var(--ok-dim)}
.cw-opt.wrong{border-color:rgba(255,123,123,.6);background:var(--err-dim)}
.cw-cards{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
.cw-card{width:180px;min-height:110px;perspective:600px;cursor:pointer}
.cw-card .in{position:relative;width:100%;min-height:110px;transition:transform .5s;transform-style:preserve-3d}
.cw-card.flip .in{transform:rotateY(180deg)}
.cw-card .f,.cw-card .b{position:absolute;inset:0;backface-visibility:hidden;border-radius:12px;padding:12px;display:grid;place-items:center;
  text-align:center;font-size:13px;border:1px solid var(--line2)}
.cw-card .f{background:linear-gradient(140deg,rgba(123,92,240,.35),rgba(91,140,248,.25));color:#fff;font-weight:600}
.cw-card .b{background:rgba(255,255,255,.07);color:#e6e2f7;transform:rotateY(180deg);font-size:12px;overflow:auto}

@media (max-width:720px){
  .fgrid{grid-template-columns:1fr}
  .toasts{left:12px;right:12px;top:12px;max-width:none}
}

/* 普通页面（首页 / 管理 / 学生端）允许纵向滚动；课堂工作台保持整屏 */
body.scroll{overflow-y:auto;overflow-x:hidden}