@import url("./experience-courtyard.css?v=reading-density-20260916");
@import url("./board-courtyard.css?v=20260912-1");
/* Production adapter: scoped overrides preserve Tutor 1.0's CSS and DOM contracts. */
body[data-tutor-ui="2"]{--accent:#446c4a;--card:#fffef9;--bg:#eeeee7;--text:#273b32;--line:#d8ddd1;--radius:18px;background:var(--bg);height:100dvh}
body[data-tutor-ui="2"] .hidden{display:none!important}.v2-legacy-reserve{display:none!important}
#main.app-shell{display:grid!important;height:100dvh;padding:0;max-width:none;margin:0;grid-template-columns:170px minmax(0,1fr)}
#main.app-shell.hidden{display:none!important}#main .navigation{min-height:0}#main .navigation .brand{color:#edf2e8;display:flex;flex-wrap:wrap;font-size:23px;padding:0 8px 25px}#main .navigation .brand img{width:31px;height:31px}#main .navigation .brand .slogan{font-size:9px;color:#bfcdc3;margin:0;display:block;width:100%;letter-spacing:0}
#main .v2-nav{display:flex;flex-direction:column;gap:9px}#main .v2-nav a{padding:12px 15px;color:#c8d5ca;border-radius:9px;font-size:12px}#main .v2-nav a.on{background:#dbe6a6;color:#20392f;font-weight:650}#main .child-chip{margin:15px 0 0;display:flex;flex-wrap:wrap;border-top:1px solid #ffffff30;padding-top:14px}#main #child-select{width:110px;color:#fff;background:#294939;border:0;font-size:11px}#main #btn-child-edit{color:#fff;padding:4px}
#main .topbar{border:0;background:transparent;position:static;padding:0;box-shadow:none}#main .page-heading h1{font-size:27px}#main #btn-tutor{font-size:11px;color:var(--ink);background:none;border:0;box-shadow:none;padding:8px}#main .mode-switch button{border:0;box-shadow:none}
#main .top-actions{display:flex;align-items:center;gap:10px}
#main .top-actions .v2-new-session{min-height:44px;padding:10px 15px;border:1px solid #bdc9b7;border-radius:12px;background:transparent;color:#355447;box-shadow:none;font:650 13px/1 system-ui;white-space:nowrap}
#main .top-actions .v2-new-session:hover{background:#e7ecdf;border-color:#9fb196}
#main .top-actions .v2-new-session:focus-visible{outline:3px solid #b88235;outline-offset:3px}
#main .top-actions .v2-language-switch{display:grid;grid-template-columns:1fr 1fr;align-items:center;min-width:126px;min-height:44px;padding:4px;border:1px solid #cbd5c5;border-radius:13px;background:#fffef9;box-shadow:0 5px 16px #20392f12;color:#687269;font:650 13px/1 system-ui}
#main .top-actions .v2-language-switch .lang-knob{position:absolute;width:55px;height:34px;border-radius:9px;background:#446c4a;box-shadow:0 3px 9px #294b3830;transition:transform .2s ease-out}
#main .top-actions .v2-language-switch span{position:relative;z-index:1;text-align:center;padding:9px 5px}
#main .top-actions .v2-language-switch span:first-of-type{color:#fff}
#main .top-actions .v2-language-switch.en .lang-knob{transform:translateX(61px)}
#main .top-actions .v2-language-switch.en span:first-of-type{color:#687269}
#main .top-actions .v2-language-switch.en span:last-of-type{color:#fff}
#main .top-actions .v2-language-switch:focus-visible{outline:3px solid #b88235;outline-offset:3px}
@media(max-width:620px){#main .topbar .page-heading{display:none}#main .top-actions{width:100%;justify-content:flex-end;gap:6px}#main .top-actions .v2-new-session{padding:9px 10px;font-size:12px}#main .top-actions .v2-language-switch{min-width:104px}#main .top-actions .mode-switch .v2-action-label{display:none}#main .top-actions .mode-switch button{min-width:40px;padding:8px}}
#main .media.learning-canvas{gap:0;padding:0;display:flex;background:var(--paper);border:1px solid var(--line);min-height:0;position:relative;overflow:hidden}#main .canvas-head{padding:6px 18px;min-height:53px}#main .canvas-actions button{font-size:10px;padding:7px;border:0;box-shadow:none;background:transparent}#main #board-panel{padding:0 25px 22px;border:0;box-shadow:none;border-radius:0;min-height:0;flex:1;background:var(--paper);display:block;overflow:auto;position:relative}#main #board-panel[style*="display: none"]{display:none!important}
#main .v2-board-head{position:sticky;top:0;background:var(--paper);padding:10px 0;z-index:3;gap:4px;border-bottom:1px solid var(--line);flex-wrap:wrap}#main .board-title{display:none}#main #board-state{font-size:10px;line-height:1.5;flex:1;min-width:120px;color:var(--muted)}#main .board-head button{font-size:10px;padding:5px 8px;min-height:28px;box-shadow:none}#main #board-problem{background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0;padding:18px 0;color:var(--ink)}#main #bq-text{font-size:17px;line-height:1.9}#main #board-figure{border-radius:9px;background:var(--paper)}#main #jxgbox{max-width:100%;background:var(--paper)!important;border:0;min-height:0}#main #board-notes{background:var(--paper)}#main #board-caption{color:var(--muted);font-size:11px}
#main .mentor{padding:20px 18px 18px;min-height:0}#main .mentor .portrait-stage{min-height:150px}#main .mentor #voice-status{font-size:10px;color:var(--muted);position:static;white-space:normal}#main .mentor #btn-voice{width:100%;border:0;background:var(--accent);color:white;border-radius:9px;padding:12px;box-shadow:none;justify-content:center;font-size:12px}#main .mentor #btn-voice .ti{display:none}#main .mentor #btn-pause{font-size:11px;border:0;box-shadow:none;background:transparent;color:var(--ink);padding:8px}#main .mentor-message p{font-size:17px;line-height:1.75;max-height:96px;overflow:auto}
#main .session-dock.media-bar{height:auto;min-height:70px;border:0;box-shadow:none;background:none;border-radius:0;padding:10px 0;display:flex;flex-wrap:wrap;gap:8px}#main .source-tools{flex-wrap:wrap;gap:3px}#main .source-tools .tool{display:inline-flex;align-items:center;padding:8px 9px;border:1px solid var(--line);background:var(--paper);border-radius:7px;box-shadow:none;font-size:11px;color:var(--ink);gap:5px}#main .source-tools .tool .ti{width:19px;height:19px}#main #btn-solved{background:#dbe6a6;color:#273b32;box-shadow:none;border:0;border-radius:8px;padding:11px 15px;font-size:12px;margin-left:auto}
#main .v2-transcript{top:53px;bottom:0;width:355px;z-index:12}#main .v2-transcript .chat{display:flex;flex:1;min-height:0;gap:0;width:auto;padding:0}#main .v2-transcript .chat-panel{display:flex;flex-direction:column;flex:1;min-height:0;padding:0;border:0;border-radius:0;box-shadow:none;background:var(--paper)}#main .v2-transcript .panel-title{display:none!important}#main .v2-transcript #messages{padding:18px;flex:1;min-height:0;max-height:none;overflow:auto}#main .v2-transcript .msg{font-size:13px;line-height:1.8;max-width:95%;white-space:pre-wrap}#main .v2-transcript .msg.user{background:#446c4a;color:white}#main .v2-transcript .msg.bot{background:#eef2e5;color:#273b32}#main .chat-bar{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:6px;padding:12px;border-top:1px solid var(--line);flex:none}#main #chat-input{width:100%;min-width:0;grid-column:1/-1;border:1px solid var(--line);padding:12px;background:#f3f5ed;font-size:12px;color:var(--ink)}#main #btn-send,#main #btn-mic{font-size:11px;padding:8px;border:0;box-shadow:none}#main #btn-send{background:var(--accent);color:white}
.v2-sheet-head{display:flex;justify-content:space-between;align-items:center;padding:16px 18px;border-bottom:1px solid var(--line);flex:none}.v2-sheet-head h3{font-size:17px;font-family:var(--display)}.v2-sheet-head button{font-size:11px}
#main .v2-panel{position:absolute;right:0;top:53px;bottom:0;width:min(390px,100%);background:var(--paper);border-left:1px solid var(--line);z-index:13;overflow:auto;padding-bottom:18px;box-shadow:-10px 0 25px #21382c12}#main .v2-source #stage{height:260px;min-height:200px;max-height:none;margin:15px;border:1px dashed var(--line);border-radius:8px;background:#e5e8db;position:relative;overflow:hidden}#main .v2-source #camera{width:100%;height:100%;object-fit:contain}#main .v2-source #stage-empty{font-size:12px;color:var(--muted);padding:24px;position:absolute;inset:0;display:grid;place-content:center}#main .v2-source>.primary{margin:5px 15px;width:calc(100% - 30px)}#main .v2-tools>.tool,#main .v2-tools>.ghost,#main .v2-tools>.lang-btn{margin:10px 15px;min-width:130px;font-size:12px}
#main .v2-capture-choices #btn-flip{display:none}
#main .v2-capture-choices:has(#btn-cam.on) #btn-flip{display:inline-flex}
#main .v2-tools{padding:0 14px 18px;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
#main .v2-tools:not([hidden]){display:grid}
#main .v2-tools .v2-sheet-head{grid-column:1/-1;margin:0 -14px 4px}
#main .v2-tools>.tool,#main .v2-tools>.ghost{display:flex;width:100%;min-width:0;min-height:56px;margin:0;align-items:center;justify-content:flex-start;gap:10px;padding:11px 13px;border:1px solid #d8dfd1;border-radius:14px;background:#f7f7f0;color:#294238;box-shadow:0 4px 12px #20392f0c;font:650 14px/1.3 system-ui}
#main .v2-tools>.tool:hover,#main .v2-tools>.ghost:hover{background:#edf2e5;border-color:#bccbb4;box-shadow:0 6px 16px #20392f14}
#main .v2-tools>.tool:focus-visible,#main .v2-tools>.ghost:focus-visible,#main .v2-tools>#btn-end:focus-visible{outline:3px solid #b88235;outline-offset:3px}
#main .v2-tools>.tool .ti{display:none}
#main .v2-tools>#btn-grade::before,#main .v2-tools>#btn-dictation::before,#main .v2-tools>#btn-essay::before,#main .v2-tools>#btn-howto::before,#main .v2-tools>#btn-history::before,#main .v2-tools>#btn-wrong::before{content:'';width:44px;height:44px;flex:0 0 44px;background-position:center;background-repeat:no-repeat;background-size:contain}
#main .v2-tools>#btn-grade::before{background-image:url('./assets/icons/toolbox/grade-20260915.png')}
#main .v2-tools>#btn-dictation::before{background-image:url('./assets/icons/toolbox/dictation-20260915.png')}
#main .v2-tools>#btn-essay::before{background-image:url('./assets/icons/toolbox/writing-20260915.png')}
#main .v2-tools>#btn-howto::before{background-image:url('./assets/icons/toolbox/speaking-help-20260915.png')}
#main .v2-tools>#btn-history::before{background-image:url('./assets/icons/toolbox/history-20260915.png')}
#main .v2-tools>#btn-wrong::before{background-image:url('./assets/icons/toolbox/report-mistake-20260915.png')}
#main .v2-tools>#vspeed{grid-column:1/-1;margin:2px 0;padding:12px 14px;border:1px solid #d8dfd1;border-radius:14px;background:#f2f5ec}
#main .v2-tools>#btn-end{grid-column:1/-1;display:flex;min-height:50px;align-items:center;justify-content:center;margin:0;border:1px solid #9eb496;border-radius:14px;background:#e3ecda;color:#294b38;font:700 14px/1.3 system-ui;text-decoration:none}
#main .v2-tools>#btn-pause.v2-quiet-action{grid-column:1/-1;margin-top:2px}
#main #report-modal.v2-owned-dialog{padding:0!important;background:#fffef9!important;flex-direction:column!important}
#main #report-modal .modal-card{position:relative;overflow:visible!important;max-height:none!important;padding:18px 24px 26px!important}
#main #report-modal .v2-report-toolbar{position:sticky;top:0;z-index:4;display:flex;width:100%;box-sizing:border-box;flex:none;align-items:center;justify-content:space-between;min-height:62px;padding:0 18px;border-bottom:1px solid #d8ddd1;background:#fffef9eF;backdrop-filter:blur(10px)}
#main #report-modal .v2-report-toolbar strong{font:650 17px/1.3 Georgia,"Songti SC",serif;color:#273b32}
#main #report-modal .v2-report-close{min-height:42px;padding:9px 15px;border:1px solid #bdc9b7;border-radius:10px;background:#eef2e8;color:#294b38;font:650 14px/1 system-ui}
#main #report-modal .v2-report-close:hover{background:#e2eadb;border-color:#9fb196}
#main #report-modal .v2-report-close:focus-visible{outline:3px solid #b88235;outline-offset:3px}
#main #report-modal #report-body{color:#2d4036}
#main #report-modal #report-body>.stat-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:0 0 16px}
#main #report-modal #report-body>.stat-row .stat{min-width:0;padding:16px 10px;border:1px solid #dde3d7;border-radius:14px;background:#f3f5ec;text-align:center}
#main #report-modal #report-body>.stat-row .stat b{display:block;color:#315b40;font:700 26px/1.1 Georgia,serif}
#main #report-modal #report-body>.stat-row .stat span{display:block;margin-top:6px;color:#6b776e;font-size:11px}
#main #report-modal .report-summary{margin:0 0 20px;padding:14px 16px;border-left:3px solid #9db08c;background:#fafaf5;color:#44554c;font-size:13px;line-height:1.7}
#main #report-modal .report-section{margin-top:22px}
#main #report-modal .report-section>h3{display:flex;align-items:baseline;justify-content:space-between;margin:0 0 10px;color:#293d33;font:650 15px/1.4 system-ui}
#main #report-modal .report-section>h3 span{color:#7b867e;font-size:11px;font-weight:500}
#main #report-modal .report-case-list{display:grid;gap:8px}
#main #report-modal .report-case{display:grid;grid-template-columns:28px minmax(0,1fr) auto;align-items:center;gap:10px;padding:13px 14px;border:1px solid #e1e5dc;border-radius:13px;background:#fff;box-shadow:0 4px 14px #20392f08}
#main #report-modal .report-case-mark{display:grid;width:28px;height:28px;place-items:center;border-radius:50%;background:#e4eddc;color:#315b40;font-weight:800}
#main #report-modal .report-case-copy{min-width:0}
#main #report-modal .report-case-meta{display:flex;align-items:center;gap:8px;margin-bottom:4px}
#main #report-modal .report-case-meta strong{color:#294b38;font-size:12px}
#main #report-modal .report-case-meta span{padding:3px 6px;border-radius:5px;background:#f0f2eb;color:#718078;font-size:10px}
#main #report-modal .report-case-copy p{display:-webkit-box;overflow:hidden;margin:0;color:#3c4b43;font-size:13px;line-height:1.5;-webkit-box-orient:vertical;-webkit-line-clamp:2}
#main #report-modal .report-case-copy small{display:block;margin-top:5px;color:#7a847e;font-size:10px}
#main #report-modal .report-replay{display:inline-flex;align-items:center;gap:5px;min-height:36px;padding:8px 10px;border:1px solid #bdc9b7;border-radius:9px;color:#315b40;font-size:11px;font-weight:650;text-decoration:none;white-space:nowrap}
#main #report-modal .report-replay:hover{background:#edf2e5;border-color:#9fb196}
#main #report-modal .report-replay:focus-visible{outline:3px solid #b88235;outline-offset:3px}
@media(max-width:700px){#main #report-modal .modal-card{padding-right:14px!important;padding-left:14px!important}#main #report-modal .report-case{grid-template-columns:24px minmax(0,1fr);padding:12px 10px}#main #report-modal .report-case-mark{width:24px;height:24px}#main #report-modal .report-replay{grid-column:2;justify-self:start;min-height:32px}}
#main .v2-requests{flex:none;max-height:160px;overflow:auto;padding:0 20px;background:var(--soft);border-top:1px solid var(--line);position:relative}#main .v2-requests .msg{margin:10px 0;max-width:100%;font-size:12px;padding:10px;border-radius:8px;white-space:pre-wrap}#main .v2-requests .msg.sys{background:transparent;color:var(--ink)}#main .v2-requests button{font-size:12px;white-space:normal}#main .v2-notice{position:absolute;bottom:15px;left:15px;right:15px;z-index:25;background:#273b32;color:#fff;padding:14px 17px;border-radius:10px;display:flex;justify-content:space-between;gap:15px;font-size:12px}#main .v2-owned-dialog{position:absolute!important;inset:53px 0 0 auto!important;width:min(480px,100%)!important;max-width:100%;height:auto!important;overflow:auto;background:var(--paper)!important;border-left:1px solid var(--line);border-radius:0;padding:18px!important;align-items:flex-start!important;justify-content:flex-start!important;box-shadow:-10px 0 30px #20382e22}#main .v2-owned-dialog>.modal-card{width:100%!important;max-width:100%!important;box-shadow:none;border-radius:0;padding:0;background:var(--paper)}
body[data-tutor-ui="2"] #btn-story{display:none}body[data-tutor-ui="2"] #auth-gate,body[data-tutor-ui="2"] #wizard{z-index:10000;overflow:auto;max-height:100dvh}body[data-tutor-ui="2"].is-text #main .mentor{background:transparent;top:-69px;left:200px;width:180px;height:51px;padding:0}body[data-tutor-ui="2"].is-text #main .mentor .portrait-stage{min-height:0}body[data-tutor-ui="2"].is-text #main .mentor-message{display:none}
@media(max-width:1100px){#main.app-shell{grid-template-columns:75px minmax(0,1fr)}#main .navigation{padding:25px 8px}#main .navigation .brand{font-size:0;padding:0 0 25px;justify-content:center}#main .navigation .brand .slogan{display:none}#main .v2-nav a{font-size:10px;padding:12px 5px;text-align:center}#main #child-select{width:57px;font-size:9px}#main .workbench{grid-template-columns:195px 1fr;gap:13px}#main .main-shell{padding:0 17px}#main #board-panel{padding:0 18px 18px}#main .mentor-message p{font-size:15px}#main .top-actions{gap:2px}#main .top-actions #btn-tutor{font-size:0}#main .top-actions #btn-tutor:after{content:'设置';font-size:11px}}
@media(max-width:700px){#main.app-shell{display:flex!important;height:auto;min-height:100dvh;flex-direction:column}#main .navigation{height:56px;min-height:56px;flex-direction:row;align-items:center;padding:0 12px}#main .navigation .brand{font-size:18px;padding:0}#main .navigation .brand img{height:26px;width:26px}#main .v2-nav{display:none}#main .nav-bottom{margin:0 0 0 auto;display:flex;align-items:center;gap:10px}#main .legacy{font-size:9px;padding:0}#main .child-chip{margin:0;padding:0;border:0}#main .child-chip #btn-child-edit{display:none}#main .topbar{height:75px}#main .page-heading h1{font-size:20px}#main .main-shell{padding:0 12px}#main .mode-switch button{font-size:10px;padding:8px}#main .top-actions #btn-tutor{display:none}#main .workbench{display:flex;flex-direction:column;gap:12px;flex:none}#main .mentor{height:145px;min-height:145px;padding:15px 14px 12px 118px}#main .mentor .portrait-stage{height:145px;width:110px;min-height:0}#main .mentor .mentor-message{padding:3px 0}#main .mentor .mentor-message p{font-size:11px;max-height:35px}#main .mentor .mentor-actions{margin-top:5px;display:flex;flex-direction:row}#main .mentor #btn-voice{font-size:10px;padding:9px;min-height:32px;width:auto}#main .mentor #btn-pause{font-size:9px;padding:4px}#main .mentor #voice-status{display:none!important}#main .media.learning-canvas{min-height:540px;max-height:none}#main #board-panel{overflow:visible;min-height:400px;padding:0 16px 15px}#main .v2-board-head{position:static}#main .canvas-head{padding:6px 12px}#main .canvas-name .subject{display:none}#main .canvas-actions button{font-size:9px;padding:5px}#main .canvas-actions #btn-new-chat{font-size:0}#main .canvas-actions #btn-new-chat:after{content:'新题';font-size:10px}#main .session-dock.media-bar{position:sticky;bottom:0;background:var(--bg);z-index:14;flex-wrap:nowrap}#main .source-tools{flex:1;flex-wrap:nowrap;overflow:auto}#main .source-tools .tool{font-size:10px;padding:7px;flex:none}#main .source-tools .ti{display:none!important}#main #btn-solved{font-size:10px;white-space:normal;padding:7px;max-width:84px}#main .v2-requests{max-height:210px}#main .v2-transcript{width:100%}body[data-tutor-ui="2"]{overflow:auto;height:auto}body[data-tutor-ui="2"].is-text #main .mentor{top:0;left:0;width:200px;height:38px;min-height:0;padding:0}body[data-tutor-ui="2"].is-text #main .portrait-stage{height:34px;width:34px}body[data-tutor-ui="2"].is-text #main .workbench{padding-top:46px}}
body[data-tutor-ui="2"] #mia-float{display:none!important}#main .v2-owned-dialog>section{width:100%;max-width:100%;margin:0;box-shadow:none}

#main .learning-canvas{flex-direction:column}#main .v2-owned-dialog[style*="display: none"]{display:none!important}

/* A concept card can own the canvas without a problem page. Keep its registered
   board drawing inside the first visible frame on a compact desktop viewport. */
body[data-tutor-ui="2"] #main #board-panel.stage-concept{display:flex;flex-direction:column;overflow:hidden}
body[data-tutor-ui="2"] #main #board-panel.stage-concept #board-knowledge{flex:1 1 auto;min-height:0;overflow-y:auto}
body[data-tutor-ui="2"] #main #board-knowledge .kn-head{position:sticky;top:0;z-index:2;min-height:44px;padding:5px 12px}
body[data-tutor-ui="2"] #main #board-knowledge .kn-card{padding:14px 18px}
body[data-tutor-ui="2"] #main #board-knowledge .kn-title{margin:5px 0 10px;font-size:clamp(22px,2.2vw,28px)}
body[data-tutor-ui="2"] #main #board-knowledge .kn-board-visual{margin:8px 0 14px;padding:8px 10px}

#main .v2-preflight{position:absolute;top:65px;left:16px;right:16px;z-index:40;padding:20px;background:var(--paper);border:2px solid var(--accent);border-radius:12px;box-shadow:0 12px 32px #20392f25}#main .v2-preflight .msg{max-width:100%;margin:0;white-space:normal;font-size:15px;color:var(--ink)}#main .v2-preflight button{padding:12px 18px;white-space:normal;background:var(--soft);box-shadow:none}

/* Required choices stay within the canvas, with modal interaction semantics. */
#main .v2-preflight{inset:0;z-index:80;display:flex;align-items:center;justify-content:center;padding:28px;background:rgba(32,57,47,.38);backdrop-filter:blur(5px);border:0;border-radius:inherit;box-shadow:none;overflow:auto}
#main .v2-preflight .preflight-card{width:min(480px,100%);padding:30px!important;background:#fffef9!important;border:2px solid #446c4a;border-radius:20px;box-shadow:0 24px 70px #14291f45;line-height:1.8;font-size:18px;font-weight:600;white-space:normal}
#main .v2-preflight .preflight-card::before{content:'继续前，请先选择';display:block;color:#446c4a;font-size:12px;letter-spacing:.12em;margin-bottom:14px}
#main .v2-preflight .preflight-card button{display:flex;width:100%;min-height:50px;margin:12px 0 0!important;border:1px solid #b6c8aa;border-radius:10px;background:#edf2e3;color:#273b32;font-size:15px;font-weight:600;white-space:normal}
#main .v2-preflight .preflight-card button:first-of-type{background:#446c4a;color:#fff;border-color:#446c4a}
#main .v2-preflight .preflight-card button:focus-visible{outline:3px solid #b88235;outline-offset:4px}
@media(max-width:700px){#main .v2-preflight{padding:16px}#main .v2-preflight .preflight-card{padding:22px!important;font-size:16px}}

#main .v2-connection-card h2{font-size:28px;margin:0 0 16px;color:#273b32}#main .v2-connection-card p{font-size:15px;font-weight:400;margin:10px 0}#main .v2-connection-card[data-failed="true"]{border:3px solid #b45632}#main .v2-connection-card[data-failed="true"]::before{content:'连接失败 · 需要处理';color:#a44223}#main .v2-connection-card[data-failed="false"]::before{content:'正在为你接通'}#main .v2-connect-phase{padding:12px;background:#edf2e3;border-radius:8px}#main .v2-connect-reason{color:#9c3d20}

#main .v2-requests{position:absolute;right:14px;bottom:14px;left:auto;z-index:35;width:min(400px,calc(100% - 28px));max-height:55%;padding:12px 18px;border:1px solid var(--line);border-radius:14px;box-shadow:0 12px 40px #20392f25;background:var(--paper)}
#main .child-chip{background:transparent!important;border-radius:0!important;box-shadow:none!important;border:0!important;padding:12px 0!important;gap:6px;align-items:center}#main #child-select{background:transparent!important;border:0!important;border-radius:0!important;color:#edf2e8}#main #btn-child-edit{background:transparent!important;box-shadow:none!important;border:0!important;font-size:11px;color:#c8d5ca!important;padding:4px!important}
#main .v2-student-line{margin-top:12px;border-top:1px solid #b8c5ae;padding-top:12px}#main .v2-student-line small{font-size:10px;color:var(--muted)}#main .v2-student-line p{font-size:14px;line-height:1.6;max-height:78px;overflow:auto;margin-top:4px}body.is-text #main .v2-student-line{display:none}
#main .child-chip{outline:0!important}#main #child-select{box-shadow:none!important;outline-offset:2px}#main #board-state{display:none}#main .v2-board-head{min-height:36px}

/* Text input stays available independently of the collapsible history. */
body[data-tutor-ui="2"].is-text #main .session-dock{flex-wrap:wrap;height:auto;gap:8px;padding-top:8px}
#main .session-dock .v2-text-composer{flex:0 0 100%;box-sizing:border-box;display:grid;grid-template-columns:minmax(0,1fr) auto auto;align-items:center;padding:8px;background:var(--paper);border:1px solid var(--line);border-radius:14px;gap:8px}
#main .v2-text-composer #chat-input{grid-column:auto;font-size:14px;padding:11px 14px;border-radius:8px}
#main .v2-text-composer #btn-mic,#main .v2-text-composer #btn-send{font-size:13px;min-height:42px;padding:10px 16px;border-radius:9px;white-space:nowrap}
#main .v2-text-composer #btn-mic{background:#e8eddf;color:#273b32}
#main .v2-text-composer #btn-mic.rec{background:#a43c31;color:white}
@media(max-width:700px){#main .v2-text-composer #chat-input{grid-column:1/-1}#main .v2-text-composer #btn-mic{grid-column:2}#main .v2-text-composer #btn-mic,#main .v2-text-composer #btn-send{padding:8px 12px}}

/* Stable voice portrait and caption tracks: text never resizes the avatar. */
@media(min-width:701px){
body[data-tutor-ui="2"]:not(.is-text) #main .mentor{display:grid;grid-template-rows:minmax(0,1fr) 126px 94px 80px;gap:0;position:relative;overflow:hidden;padding:12px 18px}
body[data-tutor-ui="2"]:not(.is-text) #main .mentor .mentor-title{position:absolute;right:18px;top:16px;z-index:3;margin:0;padding:0;text-align:right;pointer-events:none}
body[data-tutor-ui="2"]:not(.is-text) #main .mentor-title h2{font-family:Georgia,"Times New Roman",serif;font-size:27px;font-style:italic;font-weight:500;letter-spacing:-1px;margin:0;color:#244a3b;text-shadow:0 1px 8px #eeeee7}
body[data-tutor-ui="2"]:not(.is-text) #main .mentor-title p{display:none}
body[data-tutor-ui="2"]:not(.is-text) #main .mentor .portrait-stage{grid-row:1;position:relative;inset:auto;width:auto;height:100%;min-height:0;max-height:100%;margin:0 -18px;flex:none;overflow:hidden}
body[data-tutor-ui="2"]:not(.is-text) #main .mentor-message{grid-row:2;min-height:0;height:126px;box-sizing:border-box;padding:10px 0 6px;overflow:hidden}
body[data-tutor-ui="2"]:not(.is-text) #main .mentor-message .status-label{display:block;height:22px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
body[data-tutor-ui="2"]:not(.is-text) #main .mentor-message p{height:82px;max-height:82px;margin:4px 0 0;overflow:auto;font-size:16px;line-height:1.65;scrollbar-width:thin}
body[data-tutor-ui="2"]:not(.is-text) #main .mentor-actions{grid-row:3;min-height:0;height:94px;margin:0;overflow:hidden;justify-content:center}
body[data-tutor-ui="2"]:not(.is-text) #main .mentor #voice-status{display:none!important}
body[data-tutor-ui="2"]:not(.is-text) #main .v2-student-line{grid-row:4;display:block;height:80px;min-height:0;box-sizing:border-box;margin:0;padding:8px 0 0;overflow:hidden}
body[data-tutor-ui="2"]:not(.is-text) #main .v2-student-line[hidden]{display:block!important;visibility:hidden}
body[data-tutor-ui="2"]:not(.is-text) #main .v2-student-line p{height:44px;overflow:auto;margin:4px 0 0;font-size:14px;line-height:1.55;scrollbar-width:thin}
}
@media(max-width:700px){
body[data-tutor-ui="2"]:not(.is-text) #main .mentor-title{position:absolute;top:8px;left:65px;z-index:3;margin:0;padding:0;pointer-events:none}
body[data-tutor-ui="2"]:not(.is-text) #main .mentor-title h2{font-family:Georgia,serif;font-style:italic;font-size:18px;margin:0}
body[data-tutor-ui="2"]:not(.is-text) #main .mentor-title p{display:none}
body[data-tutor-ui="2"]:not(.is-text) #main .mentor-message{height:66px;overflow:hidden}
body[data-tutor-ui="2"]:not(.is-text) #main .mentor .portrait-stage{height:145px;min-height:145px;max-height:145px;flex:none}
}
#main .v2-connection-card[data-failed="false"]{padding:0 0 22px;overflow:hidden;max-width:540px;width:calc(100% - 32px);background:#fffef8;border:1px solid #e0e5d7;border-radius:24px;text-align:center;box-shadow:0 22px 80px #17362933}
#main .v2-call-art{height:clamp(140px,28vh,270px);position:relative;background-color:#254c42;background-size:cover;background-position:center;isolation:isolate}
#main .v2-call-art:after{content:'';position:absolute;inset:0;background:linear-gradient(transparent 40%,#102d346e);z-index:-1}
#main .v2-call-kicker{position:absolute;left:20px;top:18px;font-size:11px;letter-spacing:.15em;color:white;text-shadow:0 1px 8px #102d34}
#main .v2-call-orbit{position:absolute;bottom:18px;right:22px;width:64px;height:64px;display:grid;place-items:center;border:1px solid #ffffffa0;border-radius:50%;background:#fffef8e8;color:#244a3b;font:italic 25px Georgia,serif}
#main .v2-call-orbit:before,#main .v2-call-orbit:after{content:'';position:absolute;inset:-7px;border:1px solid #ffffff99;border-radius:50%;animation:leo-call-ring 2.4s ease-out infinite}
#main .v2-call-orbit:after{animation-delay:1.2s}
@keyframes leo-call-ring{from{transform:scale(.92);opacity:.9}to{transform:scale(1.45);opacity:0}}
#main .v2-call-thought{padding:20px 28px 12px}#main .v2-call-thought strong{font-size:13px;color:#54755b;letter-spacing:.1em}#main .v2-call-thought p{font-size:20px;line-height:1.65;font-family:Georgia,"Songti SC",serif;color:#233e31;margin:9px 0}#main .v2-call-thought small{font-size:10px;color:#7d887a}
#main .v2-connection-card[data-failed="false"] h2{font-size:18px;margin:10px 20px 5px}#main .v2-connection-card[data-failed="false"]>p{margin:5px 20px;font-size:12px;color:#667666}#main .v2-connection-card[data-failed="false"] .v2-connect-phase{font-size:11px;color:#7d887a}
@media(prefers-reduced-motion:reduce){#main .v2-call-orbit:before,#main .v2-call-orbit:after{animation:none}}
#main .v2-preflight .v2-connection-card[data-failed="false"]{padding:0 0 20px!important;font-weight:400}
#main .v2-preflight .v2-connection-card[data-failed="false"]::before{display:none}

/* Board-first view: a compact, fixed Leo header; call controls remain reachable. */
body[data-tutor-ui="2"].is-focus #main{grid-template-columns:minmax(0,1fr)}
body[data-tutor-ui="2"].is-focus #main .navigation{display:none}
body[data-tutor-ui="2"].is-focus #main .main-shell{height:100dvh;max-height:100dvh;flex:none;min-height:0;padding:0 18px;overflow:hidden}
body[data-tutor-ui="2"].is-focus #main .topbar{position:relative;height:76px;flex:none}
body[data-tutor-ui="2"].is-focus #main .workbench{display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,1fr);flex:1;min-height:0;padding:0}
body[data-tutor-ui="2"].is-focus #main .topbar>.mentor{display:grid!important;position:absolute;left:230px;right:310px;top:8px;height:58px;min-height:0;padding:0;grid-template-columns:54px minmax(0,1fr);grid-template-rows:32px 26px;gap:0 10px;border:0;background:transparent;overflow:hidden}
body[data-tutor-ui="2"].is-focus #main .topbar>.mentor .mentor-title{display:none}
body[data-tutor-ui="2"].is-focus #main .topbar>.mentor .portrait-stage{grid-column:1;grid-row:1/3;position:relative;inset:auto;width:54px;height:54px;min-height:0;margin:0;border-radius:50%;overflow:hidden;background:#d9dfcf}
body[data-tutor-ui="2"].is-focus #main .topbar>.mentor .mentor-message{grid-column:2;grid-row:1;height:32px;padding:0;min-height:0;display:flex;align-items:center}
body[data-tutor-ui="2"].is-focus #main .topbar>.mentor .status-label{display:none}
body[data-tutor-ui="2"].is-focus #main .topbar>.mentor .mentor-message p{font:500 14px/1.5 var(--font-body,system-ui);height:auto;max-height:30px;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;text-align:left}
body[data-tutor-ui="2"].is-focus #main .topbar>.mentor .v2-student-line{grid-column:2;grid-row:2;height:24px;min-height:0;padding:0;margin:0;border:0;display:flex;align-items:center;gap:6px;overflow:hidden}
body[data-tutor-ui="2"].is-focus #main .topbar>.mentor .v2-student-line[hidden]{display:none}
body[data-tutor-ui="2"].is-focus #main .topbar>.mentor .v2-student-line small{font-size:10px;white-space:nowrap}
body[data-tutor-ui="2"].is-focus #main .topbar>.mentor .v2-student-line p{font:12px/1.4 system-ui;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
body[data-tutor-ui="2"].is-focus #main .session-dock{gap:10px;flex:none}
body[data-tutor-ui="2"].is-focus #main .session-dock .mentor-actions{display:flex;flex-direction:row;flex:none;gap:8px;align-items:center;margin:0;height:auto;padding:0}
body[data-tutor-ui="2"].is-focus #main .session-dock #voice-status{display:none!important}
body[data-tutor-ui="2"].is-focus #main .session-dock #btn-voice,body[data-tutor-ui="2"].is-focus #main .session-dock #btn-pause{width:auto;min-height:44px;padding:10px 14px;margin:0;font-size:13px;white-space:nowrap}
body[data-tutor-ui="2"].is-focus #main .learning-canvas{min-height:0;height:100%;max-height:none}
body[data-tutor-ui="2"].is-focus #main #board-panel{min-height:0;overflow:auto}
@media(max-width:900px){body[data-tutor-ui="2"].is-focus #main .page-heading{display:none}body[data-tutor-ui="2"].is-focus #main .topbar>.mentor{left:0;right:260px}body[data-tutor-ui="2"].is-focus #main .source-tools{min-width:0;overflow-x:auto;flex-wrap:nowrap}body[data-tutor-ui="2"].is-focus #main .session-dock #btn-solved{display:none}}
@media(max-width:600px){body[data-tutor-ui="2"].is-focus #main .main-shell{padding:0 8px}body[data-tutor-ui="2"].is-focus #main .topbar>.mentor{right:165px}body[data-tutor-ui="2"].is-focus #main .session-dock{flex-wrap:wrap;gap:4px}body[data-tutor-ui="2"].is-focus #main .source-tools{width:100%}body[data-tutor-ui="2"].is-focus #main .session-dock .mentor-actions{margin-left:auto}body[data-tutor-ui="2"].is-focus #main .canvas-actions button{min-height:40px}}

body[data-tutor-ui="2"].is-focus #main .top-actions{margin-left:auto;flex:none;position:relative;z-index:2}
body[data-tutor-ui="2"].is-focus #main .session-dock{position:relative;height:auto;min-height:66px;padding:8px 0}
body[data-tutor-ui="2"].is-focus #main .mentor-message br{display:none}

/* Text mode remains quiet when focus mode moves the mentor into the header. */
body[data-tutor-ui="2"].is-text.is-focus #main .topbar>.mentor .mentor-message,
body[data-tutor-ui="2"].is-text.is-focus #main .topbar>.mentor .v2-student-line,
body[data-tutor-ui="2"].is-text.is-focus #main .session-dock .mentor-actions{display:none}
body[data-tutor-ui="2"].is-text.is-focus #main .topbar>.mentor .mentor-title{display:block;grid-column:2;grid-row:1/3;position:static;margin:0;align-self:center}
body[data-tutor-ui="2"].is-text.is-focus #main .topbar>.mentor .mentor-title h2{font-size:20px;margin:0}
body[data-tutor-ui="2"].is-text.is-focus #main .topbar>.mentor .mentor-title p{font-size:11px;margin:0}

/* Transient, dismissible learning notices; never take permanent board space. */
#main .v2-requests .v2-sheet-head{position:sticky;top:0;background:var(--paper);display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 0 10px;margin:0;border-bottom:1px solid var(--line)}
#main .v2-requests .v2-sheet-head h3{font:600 14px/1.4 system-ui;margin:0;color:var(--muted)}
#main .v2-requests .v2-sheet-head button{min-height:40px;padding:8px 14px}
#main .v2-requests>.msg{margin:10px 0;font:400 16px/1.65 system-ui}
#main .v2-tools #btn-pause.v2-quiet-action{display:flex;width:100%;min-height:52px;align-items:center;justify-content:center;font:700 16px/1.5 system-ui;padding:12px 18px;border:1px solid #aebfa5;border-radius:13px;margin-top:14px;background:#e8efdf;color:#294b38;box-shadow:0 4px 12px #294b3812}
#main .v2-tools #btn-pause.v2-quiet-action:hover{background:#dde9d4;box-shadow:0 6px 16px #294b381c}
/* Informational updates never reopen the sheet. Explicit hidden wins over flex styles. */
#main .v2-requests[hidden],#main .v2-requests>[hidden],#main .v2-notice[hidden]{display:none!important}
#main .v2-notice{left:50%;right:auto;bottom:20px;transform:translateX(-50%);width:max-content;max-width:calc(100% - 40px);padding:10px 14px;font:400 14px/1.5 system-ui;align-items:center;box-shadow:0 4px 16px #20392f18}
#main .v2-notice>span{max-width:520px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
/* One photograph entry; legacy controls and handlers live in the source sheet. */
#main .v2-capture-choices{display:flex;flex-wrap:wrap;gap:10px;padding:14px 0;align-items:center}
#main .v2-capture-choices button{min-height:44px;padding:10px 14px;font-size:14px}
#main .v2-capture-choices button.hidden{display:none!important}
#main .v2-resume{min-height:44px;padding:10px 16px;border-radius:12px;background:var(--accent);color:var(--accent-ink);border:0}
#main .v2-resume[hidden]{display:none!important}
#main .v2-requests{max-height:min(40%,340px);width:min(380px,calc(100% - 28px))}
#main .v2-requests .g-head{font:600 18px/1.5 system-ui;margin:0 0 8px}
#main .v2-requests .g-sub{font:400 14px/1.6 system-ui;margin:0 0 10px}
#main .v2-requests button{min-height:44px}
body[data-tutor-ui="2"]:not(.is-text) #main .mentor-actions:has(.v2-resume:not([hidden])){flex-direction:row;gap:6px;align-items:center}
body[data-tutor-ui="2"]:not(.is-text) #main .mentor-actions:has(.v2-resume:not([hidden]))>button{flex:1;min-width:0;font-size:14px;padding:10px 8px;width:auto}

/* Text tutoring: the board and composer are sibling tracks, never overlapping. */
body[data-tutor-ui="2"].is-text #main.app-shell{height:var(--leo-viewport-height,100dvh);min-height:0;position:relative;top:var(--leo-viewport-top,0px);overflow:hidden}
body[data-tutor-ui="2"].is-text #main .main-shell{height:100%;max-height:100%;min-height:0;display:flex;flex-direction:column;overflow:hidden}
body[data-tutor-ui="2"].is-text #main .workbench{flex:1;min-height:0;overflow:hidden}
body[data-tutor-ui="2"].is-text #main .learning-canvas{min-height:0;flex:1}
body[data-tutor-ui="2"].is-text #main #board-panel{min-height:0;overflow:auto}
body[data-tutor-ui="2"].is-text #main .session-dock{flex:none;position:relative;bottom:auto;min-height:0;padding:8px 0 max(8px,env(safe-area-inset-bottom));gap:6px}
body[data-tutor-ui="2"] #main .session-dock .v2-text-composer{grid-template-columns:minmax(120px,1fr) 164px 72px;gap:6px 10px;padding:10px 12px;border:1px solid #b4c5af;border-radius:18px;box-shadow:0 3px 12px #253f3010;flex-shrink:0}
body[data-tutor-ui="2"] #main .v2-text-composer #chat-input{grid-column:1;grid-row:1;min-height:54px;font-size:16px;line-height:1.5;background:#f4f6ef;border:1px solid transparent;border-radius:12px;padding:12px 14px;box-sizing:border-box;outline-offset:2px}
body[data-tutor-ui="2"] #main .v2-text-composer #chat-input:focus{outline:2px solid #547b59;background:white}
body[data-tutor-ui="2"] #main .v2-text-composer #btn-mic{grid-column:2;grid-row:1;min-height:54px;padding:8px 10px 8px 44px;position:relative;font-size:14px;font-weight:650;background:#e1ebd6;color:#274832;border:1px solid #b5cba8;border-radius:12px;touch-action:none;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none}
body[data-tutor-ui="2"] #main .v2-text-composer #btn-mic:before{content:'';position:absolute;left:3px;top:7px;width:42px;height:40px;background:url('./assets/icons/dictation.png') center/contain no-repeat;pointer-events:none}
body[data-tutor-ui="2"] #main .v2-text-composer #btn-mic.rec{background:#a83e35;color:white;border-color:#a83e35}
body[data-tutor-ui="2"] #main .v2-text-composer #btn-mic[data-dictation-state="processing"]{background:#eaece5;color:#697563}
body[data-tutor-ui="2"] #main .v2-text-composer #btn-send{grid-column:3;grid-row:1;min-height:54px;font-size:16px;padding:10px;border-radius:12px}
#main .v2-dictation-note{display:none}
#main .v2-text-composer .v2-dictation-note{display:block;grid-column:1/-1;font:12px/1.4 system-ui,sans-serif;color:#66755f;padding-left:3px}
body[data-tutor-ui="2"] #main .v2-text-composer .v2-voice-draft{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 10px;border:1px solid #b8cfae;border-radius:10px;background:#f0f6ea;color:#28472f;font:14px/1.45 system-ui,sans-serif}
body[data-tutor-ui="2"] #main .v2-text-composer .v2-voice-draft span{min-width:0;overflow-wrap:anywhere}
body[data-tutor-ui="2"] #main .v2-text-composer .v2-voice-draft button{flex:none;min-height:40px;padding:7px 12px;border:1px solid #87aa82;border-radius:9px;background:white;color:#28472f;font:600 14px/1 system-ui,sans-serif;cursor:pointer}
body[data-tutor-ui="2"] #main .v2-text-composer .v2-voice-draft.sent{background:#f7f8f2;color:#536653}
body[data-tutor-ui="2"].is-text #main .canvas-actions button{min-height:44px;font-size:12px;padding:8px}
body[data-tutor-ui="2"].is-text #main .v2-transcript{width:min(390px,100%);bottom:0}
@media(max-width:700px){
 body[data-tutor-ui="2"].is-text{height:100dvh;overflow:hidden}
 body[data-tutor-ui="2"].is-text #main .navigation{display:none}
 body[data-tutor-ui="2"].is-text #main .workbench{padding-top:0}
 body[data-tutor-ui="2"].is-text #main .workbench>.mentor{display:none}
 body[data-tutor-ui="2"] #main .session-dock .v2-text-composer{grid-template-columns:minmax(0,1fr) 68px;padding:8px}
 body[data-tutor-ui="2"] #main .v2-text-composer #chat-input{grid-column:1/-1;grid-row:1}
 body[data-tutor-ui="2"] #main .v2-text-composer #btn-mic{grid-column:1;grid-row:2}
 body[data-tutor-ui="2"] #main .v2-text-composer #btn-send{grid-column:2;grid-row:2}
}
@media(max-height:550px){body[data-tutor-ui="2"].is-text #main .topbar{height:54px;min-height:54px}body[data-tutor-ui="2"].is-text #main .session-dock>.source-tools,body[data-tutor-ui="2"].is-text #main .session-dock>#btn-solved{display:none}#main .v2-text-composer .v2-dictation-note{display:none}}
body[data-tutor-ui="2"].is-text{padding:0;overflow:hidden}
body[data-tutor-ui="2"].is-text #main.app-shell{flex:none}
body[data-tutor-ui="2"].is-text #main .workbench{overflow:visible}
/* 【两栏宽度可拖】(2026-09-22 John)：板书和对话各占多少，让用户自己定。
   原来右栏写死 320px——题面长的时候板书挤，只想看对话的时候又嫌窄。
   宽度收在 --v2-chat-w 里，拖完存本机，下次进来还是他调好的那个宽度。 */
body[data-tutor-ui="2"].is-text #main .learning-canvas.has-history{display:grid;grid-template-columns:minmax(0,1fr) var(--v2-chat-w,320px);grid-template-rows:auto minmax(0,1fr)}
/* 手柄压在那条竖线上：平时看不见（竖线还是原来那条 1px），指上去和拖动时才显形 */
/* 只有真的两栏时才存在：对话收起（没有 has-history）时它会变成网格里多出来的一格 */
body[data-tutor-ui="2"] #main .v2-split{display:none}
body[data-tutor-ui="2"].is-text #main .has-history .v2-split{display:block;grid-row:2;grid-column:2;justify-self:start;align-self:stretch;width:11px;margin-left:-6px;z-index:13;cursor:col-resize;touch-action:none;border:0;padding:0;background:transparent;position:relative}
body[data-tutor-ui="2"].is-text #main .has-history .v2-split::before{content:'';position:absolute;inset:0 5px;background:var(--accent);opacity:0;transition:opacity .12s}
body[data-tutor-ui="2"].is-text #main .has-history .v2-split:hover::before,
body[data-tutor-ui="2"].is-text #main .has-history .v2-split:focus-visible::before,
body[data-tutor-ui="2"].is-text #main .has-history .v2-split.is-dragging::before{opacity:.55}
body[data-tutor-ui="2"].is-text #main .has-history .v2-split:focus-visible{outline:2px solid var(--accent);outline-offset:1px}
body[data-tutor-ui="2"].is-text #main .learning-canvas.has-history.is-splitting{cursor:col-resize;user-select:none}
body[data-tutor-ui="2"].is-text #main .has-history .canvas-head{grid-column:1/-1}
body[data-tutor-ui="2"].is-text #main .has-history #board-panel{grid-row:2;grid-column:1}
body[data-tutor-ui="2"].is-text #main .has-history .v2-transcript{position:relative;inset:auto;grid-row:2;grid-column:2;width:auto;min-height:0;box-shadow:none;border-left:1px solid var(--line)}
@media(max-width:1000px){
 body[data-tutor-ui="2"].is-text #main .learning-canvas.has-history{grid-template-columns:minmax(0,1fr);grid-template-rows:auto minmax(100px,1fr) minmax(0,28%)}
 body[data-tutor-ui="2"].is-text #main .has-history .v2-transcript{grid-row:3;grid-column:1;border-left:0;border-top:1px solid var(--line)}
 body[data-tutor-ui="2"].is-text #main .has-history .v2-split{display:none}
 body[data-tutor-ui="2"].is-text #main .has-history .v2-sheet-head{padding:5px 12px;min-height:40px}
}
body[data-tutor-ui="2"].is-text #main .workbench{grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,1fr)}
body[data-tutor-ui="2"].is-text #main .learning-canvas{grid-column:1;grid-row:1;width:100%}
body[data-tutor-ui="2"]:not(.has-text-input) #main #btn-mic{display:none}
#main .v2-text-reply{display:none}
body[data-tutor-ui="2"].has-text-input #main .v2-text-reply:not([hidden]){display:flex;order:-1;flex:0 0 100%;gap:12px;max-height:80px;overflow:auto;padding:9px 14px;background:#e5ecdD;border-radius:12px;color:#294634;font-size:15px;line-height:1.6}
#main .v2-text-reply strong{font-family:Georgia,serif;font-style:italic;flex:none}
#main .v2-text-reply p{margin:0;white-space:pre-wrap;overflow-wrap:anywhere}
/* Voice allowance is irrelevant to text input and must never cover Send. */
body[data-tutor-ui="2"].is-text [data-voice-meter]{display:none!important}
/* A visible speaking card, anchored above input, within the normal board layout. */
body[data-tutor-ui="2"].has-text-input #main .v2-text-reply:not([hidden]){display:grid;grid-template-columns:1fr auto;gap:4px 14px;max-height:none;padding:12px 18px;background:#fff8df;border:1px solid #d4bc70;border-left:5px solid #54754c;border-radius:15px;box-shadow:0 3px 12px #6650200d;color:#243c2b;overflow:hidden}
#main .v2-text-reply strong{font:700 13px/1.5 system-ui,sans-serif;letter-spacing:.04em;color:#45643e}
#main .v2-text-reply p{grid-column:1/-1;max-height:64px;overflow:auto;font:500 18px/1.75 system-ui,-apple-system,"PingFang SC",sans-serif;letter-spacing:.015em}
#main .v2-text-reply.is-expanded p{max-height:min(28vh,240px)}
#main .v2-text-reply .v2-reply-expand{padding:0 6px;min-height:28px;font-size:12px;color:#55724b;text-decoration:underline;text-underline-offset:3px;box-shadow:none}
#main .v2-text-reply.is-typing p:after{content:'';display:inline-block;width:2px;height:1em;background:#54754c;margin-left:3px;vertical-align:-.1em;animation:leo-text-caret .85s steps(1) infinite}
@keyframes leo-text-caret{50%{opacity:0}}
@media(prefers-reduced-motion:reduce){#main .v2-text-reply.is-typing p:after{animation:none}}
@media(max-height:550px){body[data-tutor-ui="2"].has-text-input #main .v2-text-reply:not([hidden]){padding:6px 12px}#main .v2-text-reply p{max-height:50px;font-size:16px;line-height:1.55}}
#main .learning-canvas{position:relative}
#main .v2-scaffold-card:not([hidden]){position:absolute;z-index:38;left:50%;top:50%;translate:-50% -50%;width:min(620px,calc(100% - 40px));box-sizing:border-box;padding:28px;background:#fffdf7;border:1px solid #c7b56f;border-radius:24px;box-shadow:0 18px 48px #18372728;color:#203c2d}
#main .v2-scaffold-kicker{display:flex;align-items:center;gap:10px;font:700 13px/1.4 system-ui,sans-serif;letter-spacing:.08em;color:#607b5c;text-transform:uppercase}
#main .v2-scaffold-kicker span{padding:5px 9px;border-radius:999px;background:#e1ead7;color:#31533a;letter-spacing:0}
#main .v2-scaffold-card h2{margin:14px 0 8px;font:700 clamp(24px,3vw,36px)/1.35 Georgia,"Songti SC",serif;color:#19392a}
#main .v2-scaffold-help{margin:0 0 18px;color:#6b7668;font:15px/1.6 system-ui,sans-serif}
#main .v2-scaffold-card textarea{display:block;width:100%;min-height:94px;box-sizing:border-box;resize:none;padding:14px 16px;border:1.5px solid #b6c6ae;border-radius:15px;background:#f8faf4;color:#203c2d;font:17px/1.6 system-ui,sans-serif;outline:none}
#main .v2-scaffold-card textarea:focus{border-color:#4d7755;box-shadow:0 0 0 4px #789e6b22;background:#fff}
#main .v2-scaffold-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:14px}
#main .v2-scaffold-actions button{min-height:48px;padding:10px 18px;border-radius:14px;font-weight:700}
#main .v2-scaffold-voice{background:#e6eddc;color:#31543a;border:1px solid #bfd0b5}
#main .v2-scaffold-submit{background:#315f40;color:white;border:1px solid #315f40}
#main .v2-scaffold-status{min-height:20px;margin:10px 0 0;color:#64735f;font:13px/1.5 system-ui,sans-serif}
@media(max-width:700px){#main .v2-scaffold-card:not([hidden]){width:calc(100% - 24px);padding:20px;top:46%;border-radius:20px}#main .v2-scaffold-actions{display:grid;grid-template-columns:1fr 1.25fr}#main .v2-scaffold-actions button{padding:9px}}
#main .v2-text-reply p{height:64px}
#main .v2-text-reply.is-expanded p{height:auto}
@media(max-height:550px){#main .v2-text-reply p{height:50px}}

body[data-tutor-ui="2"].has-text-input #main .session-dock .v2-text-composer{display:grid!important;flex:0 0 100%;width:100%;box-sizing:border-box}
#main .v2-scaffold-card [hidden]{display:none!important}


.tutor-image-purpose{max-width:min(480px,85vw);padding:28px;border:1px solid #b4c5af;border-radius:20px;background:#fffdf7;color:#203c2d}.tutor-image-purpose::backdrop{background:#203c2d55}.tutor-image-purpose button{display:block;width:100%;margin-top:12px;padding:14px;border:1px solid #b4c5af;border-radius:12px;background:#e1ebd6;color:#203c2d;font:600 16px system-ui}

body[data-tutor-ui="2"] #main .v2-text-composer #btn-mic[hidden]{display:none!important}
body[data-tutor-ui="2"] #main .session-dock .v2-text-composer.voice-connected{grid-template-columns:minmax(120px,1fr) 72px}
body[data-tutor-ui="2"] #main .v2-text-composer.voice-connected #btn-send{grid-column:2}
body[data-tutor-ui="2"] #main .v2-text-composer.voice-connected .v2-dictation-note{display:none}

/* Readability pass 2026-09-12: stable role sizes at desktop / iPad reading distance.
   Wrap controls instead of shrinking labels; leave board geometry and teaching untouched. */
body[data-tutor-ui="2"]{--tutor-control-size:16px;--tutor-caption-size:14px}
#main .canvas-head{flex-wrap:wrap;gap:8px;min-height:60px;padding:8px 18px}
#main .canvas-name{font-size:16px}
#main .canvas-name .subject{font-size:14px;color:#566653}
#main .canvas-actions{flex-wrap:wrap;gap:4px}
#main .canvas-actions button,#main .board-head button{font-size:var(--tutor-control-size);font-weight:550;line-height:1.4;min-height:44px;padding:9px 12px;white-space:nowrap}
#main .v2-board-head{gap:6px;padding:8px 0;align-items:center}
#main #board-state,#main #board-caption{font-size:var(--tutor-caption-size);line-height:1.6;color:#566653}
#main #bq-text{font-size:20px;line-height:1.75}
#main .mode-switch button,#main #btn-tutor{font-size:16px;min-height:44px;padding:10px 14px}
#main .source-tools .tool,#main #btn-solved,#main .v2-tools>.tool,#main .v2-tools>.ghost,#main .v2-tools>.lang-btn{font-size:16px;line-height:1.4;min-height:44px;padding:10px 12px}
#main .v2-nav a{font-size:15px;line-height:1.45;padding:11px 10px}
#main .navigation .brand .slogan,#main .legacy,#main #child-select,#main #btn-child-edit{font-size:14px;line-height:1.5}
#main .v2-sheet-head button,#main .v2-requests button{font-size:16px;min-height:44px}
#main .v2-transcript .msg{font-size:17px;line-height:1.75}
#main .v2-transcript .msg.agent-progress{max-width:100%;font-size:14px;line-height:1.45}
#main .v2-agent-progress-rail{order:3;flex:1 0 100%;min-width:0;padding:2px 0 4px}
#main .v2-agent-progress-rail[hidden]{display:none!important}
#main .v2-agent-progress-rail .msg.agent-progress{width:100%;max-width:100%;margin:0;font-size:14px;line-height:1.45}
#main .v2-student-line small,#main .status-label,#main .mentor #voice-status,#main .v2-call-thought small,#main .v2-call-kicker{font-size:14px}
#main .v2-notice,#main .v2-requests .g-sub{font-size:16px;line-height:1.65}
body[data-tutor-ui="2"] #main .v2-dictation-note{font-size:14px;line-height:1.5;color:#566653}
body[data-tutor-ui="2"] #main .v2-text-composer #chat-input{font-size:18px}
body[data-tutor-ui="2"] #main .mentor #btn-voice,body[data-tutor-ui="2"].is-focus #main .session-dock #btn-voice{font-size:16px;min-height:44px}
body[data-tutor-ui="2"]:not(.is-text) #main .v2-student-line p{font-size:16px;line-height:1.6}
body[data-tutor-ui="2"].is-focus #main .topbar>.mentor .v2-student-line small,body[data-tutor-ui="2"].is-text.is-focus #main .topbar>.mentor .mentor-title p{font-size:14px}
body[data-tutor-ui="2"].is-focus #main .topbar>.mentor .v2-student-line p{font-size:16px}
@media(max-width:1100px){
 #main .v2-nav a{font-size:14px;padding:10px 5px;overflow-wrap:anywhere}
 #main #child-select{font-size:14px}
 #main .top-actions #btn-tutor{font-size:0}
 #main .top-actions #btn-tutor:after{font-size:16px}
 #main .canvas-head{padding:8px 12px}
 #main .canvas-actions button,#main .board-head button{padding:9px 10px}
}
@media(max-width:700px){
 #main .canvas-actions #btn-new-chat{font-size:0}
 #main .canvas-actions #btn-new-chat:after{font-size:16px}
 #main .mode-switch button{font-size:15px;padding:10px}
 #main .source-tools .tool,#main #btn-solved{font-size:15px;min-height:44px}
 #main .mentor .mentor-message p{font-size:16px;max-height:52px}
 #main #bq-text{font-size:18px}
}

/* One navigation location: existing page footer. Secondary tools stay discoverable. */
#main .canvas-name .subject{display:none}
#main .board-paged #board-prev,#main .board-paged #board-next{display:none!important}
#main .v2-board-tools{position:relative;order:20;flex:none}
#main .v2-board-tools>summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:center;width:46px;height:46px;border:1px solid #d8ddd1;border-radius:10px;background:#fffef9}
#main .v2-board-tools>summary::-webkit-details-marker{display:none}
#main .v2-board-tools>summary:focus-visible{outline:3px solid #446c4a;outline-offset:3px}
#main .v2-tool-sprite{display:inline-block;flex:none;width:32px;height:32px;background-image:url('./assets/icons/board-tools-20260912.png');background-size:200% 200%;background-repeat:no-repeat}
#main .v2-icon-more{background-position:100% 0}
#main .v2-icon-help{background-position:0 100%}
#main .v2-icon-replay{background-position:100% 100%}
#main .v2-board-tools-panel{position:absolute;right:0;top:calc(100% + 8px);z-index:30;min-width:230px;padding:8px;background:#fffef9;border:1px solid #c8d1c2;border-radius:12px;box-shadow:0 10px 28px #20392f20;display:flex;flex-direction:column;gap:4px}
#main .v2-board-tools-panel button{font-size:16px;visibility:visible!important;justify-content:flex-start;min-height:48px;width:100%;padding:8px 12px;background:transparent;color:#294b38;border-radius:7px}
#main .v2-board-tools-panel button:hover{background:#edf2e7}
#main #btn-layout.v2-board-expand{position:relative;font-size:0;min-width:46px;height:46px;padding:6px;border:1px solid #d8ddd1;border-radius:10px;background:#fffef9}
#main #btn-layout.v2-board-expand:before{content:'';width:32px;height:32px;background:url('./assets/icons/board-tools-20260912.png') 0 0/200% 200% no-repeat}
#main .board-page-nav{gap:12px;flex-wrap:wrap}
#main .board-page-nav button{font-size:17px;min-height:48px;line-height:1.4}
#main .board-page-nav [role="status"]{font-size:16px;color:#52634c}

body[data-tutor-ui="2"].is-text #main .canvas-actions button{font-size:16px;padding:9px 12px}
#main .v2-board-tools:not([open])>.v2-board-tools-panel{display:none}
#main .v2-scaffold-help-buttons button,#main .v2-scaffold-card>button{font-size:16px;min-height:44px}
#main .v2-text-reply .v2-reply-expand{font-size:14px;min-height:32px}

#main .v2-board-tools-panel #board-replay{display:inline-flex!important}
#main .canvas-head{flex-wrap:wrap;gap:8px 14px}
#main .canvas-head>.board-page-nav{display:flex;align-items:center;flex-wrap:wrap;gap:6px;margin-left:auto;border:0;padding:0;background:transparent}
#main .canvas-head>.board-page-nav button{min-height:38px;padding:6px 10px;font-size:14px}
#main .canvas-head>.board-page-nav span{font-size:12px;min-width:88px}
#main .top-actions>#bean-badge{position:static;inset:auto;z-index:auto;flex:none;white-space:nowrap;margin:0 6px 0 0}
#main:has(#board-panel:is(.stage-lesson,.stage-dictation,.stage-concept,.stage-video)) .canvas-head>.board-page-nav{display:none}
#main .v2-board-tools-panel:popover-open{position:fixed;inset:auto;margin:0;max-width:calc(100vw - 16px);max-height:calc(100dvh - 16px);overflow:auto;box-sizing:border-box;display:flex}
body[data-tutor-ui="2"].layout-full #main #btn-layout.v2-board-expand{position:relative;inset:auto;z-index:auto}
body[data-tutor-ui="2"].layout-full #main #v2-canvas{position:fixed;inset:80px 12px 12px;z-index:110;width:auto!important;height:auto!important;max-width:none}
body[data-tutor-ui="2"].layout-full #main #board-panel{position:relative;inset:auto;z-index:auto}
body[data-tutor-ui="2"].layout-full #main .topbar{position:relative;z-index:120}
body[data-tutor-ui="2"].layout-full #main .navigation{z-index:140}
body[data-tutor-ui="2"].layout-full #main .v2-nav-shade{z-index:135}

/* Primary tutoring choice: selected state must be unmistakable. */
#main .mode-switch{gap:6px;padding:5px;border:1px solid #91a78a;border-radius:16px;background:#fffef9;box-shadow:0 3px 12px #294b3812}
#main .mode-switch button{min-width:126px;min-height:52px;padding:12px 18px;border-radius:11px;font-size:18px;font-weight:700;line-height:1.4;color:#36523c;background:transparent;border:1px solid transparent}
#main .mode-switch button[aria-pressed="true"]{background:#315c3c;color:#fff;border-color:#315c3c;box-shadow:0 2px 5px #203d3020}
#main .mode-switch button[aria-pressed="false"]:hover{background:#edf3e7;border-color:#b3c4a8}
#main .mode-switch button:focus-visible{outline:3px solid #b38b35;outline-offset:3px}
@media(max-width:700px){#main .mode-switch button{min-width:100px;min-height:48px;font-size:16px;padding:10px 12px}}

/* Voice uses the portrait caption; a secondary composer opens on demand. */
body[data-tutor-ui="2"]:not(.is-text) #main .session-dock .v2-text-reply{display:none!important}
body[data-tutor-ui="2"]:not(.is-text):not(.voice-input-open) #main .session-dock .v2-text-composer{display:none!important}
body[data-tutor-ui="2"]:not(.is-text) #main .session-dock .v2-text-composer{padding:8px 10px;gap:8px;border-radius:14px}
body[data-tutor-ui="2"]:not(.is-text) #main .v2-text-composer .v2-dictation-note{display:none}
body[data-tutor-ui="2"]:not(.is-text) #main .v2-text-composer #chat-input{min-height:44px;height:44px;padding:9px 12px}
body[data-tutor-ui="2"]:not(.is-text) #main .v2-text-composer #btn-mic,body[data-tutor-ui="2"]:not(.is-text) #main .v2-text-composer #btn-send{min-height:44px;padding:9px 12px}
#main #v2-input-toggle{font-size:16px;min-height:44px;padding:10px 14px;border:1px solid #9ab190;border-radius:10px;color:#315c3c;background:#fffef9}
#main #v2-input-toggle[aria-expanded="true"]{background:#e4eddd}

/* Navigation is a reversible overlay, never a permanent board column. */
body[data-tutor-ui="2"] #main.app-shell{grid-template-columns:minmax(0,1fr)}
body[data-tutor-ui="2"] #main .topbar{gap:12px}
body[data-tutor-ui="2"] #main .navigation{position:fixed;z-index:91;left:12px;top:82px;bottom:auto;width:252px;max-height:calc(100dvh - 98px);height:auto;min-height:0;box-sizing:border-box;padding:14px;display:flex;flex-direction:column;overflow:auto;border:1px solid #ccd5c6;border-radius:16px;background:#edf1e5!important;color:#294238!important;box-shadow:0 16px 48px #17382f24}
body[data-tutor-ui="2"] #main .navigation[hidden]{display:none!important}
#main .v2-nav-shade{position:fixed;inset:0;z-index:90;background:#18392f26}
#main .v2-nav-toggle{position:relative;flex:none;min-height:48px;padding:11px 14px;font-size:16px;font-weight:700;gap:12px;background:#315c3c;color:#fff;border-radius:12px;box-shadow:0 3px 10px #203c2d18}
#main .v2-nav-toggle:after{content:'';width:8px;height:8px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(-45deg);animation:nav-invite 1s ease-in-out 2}
#main .v2-nav-toggle[aria-expanded="true"]:after{transform:rotate(135deg);animation:none}
#main .v2-nav-head{display:flex;align-items:center;justify-content:space-between;padding:2px 2px 11px;border-bottom:1px solid #cad4c2}
#main .v2-nav-close{font-size:0;width:34px;height:34px;min-height:34px;padding:0;color:#496256;border:0;border-radius:8px;background:transparent}
#main .v2-nav-close:before,#main .v2-nav-close:after{content:'';position:absolute;width:14px;height:1.5px;background:currentColor;transform:rotate(45deg)}
#main .v2-nav-close:after{transform:rotate(-45deg)}
body[data-tutor-ui="2"] #main .navigation .brand{font-size:19px;justify-content:flex-start;padding:0}
body[data-tutor-ui="2"] #main .navigation .brand img{width:34px;height:34px}
body[data-tutor-ui="2"] #main .navigation .brand .slogan{display:none}
body[data-tutor-ui="2"] #main .navigation .v2-nav{display:flex;flex-direction:column;gap:5px;padding-top:12px;margin-top:0;border-top:0}
body[data-tutor-ui="2"] #main .navigation .v2-nav a{display:flex;align-items:center;gap:6px;font-size:16px;padding:11px 12px;min-height:44px;justify-content:flex-start;color:#43584c;border-radius:12px}
body[data-tutor-ui="2"] #main .navigation .v2-nav a[aria-current]{background:#fffef9;color:#213c31;font-weight:700;box-shadow:0 5px 16px #37472c0b}
body[data-tutor-ui="2"] #main .navigation .nav-bottom{display:block;margin-top:12px;padding-top:12px;border-top:1px solid #cad4c2}
body[data-tutor-ui="2"] #main .navigation .child-chip{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:6px;padding:7px 8px;border:1px solid #789487;border-radius:10px}
body[data-tutor-ui="2"] #main .navigation #child-select{width:100%;min-width:0;font-size:13px}
body[data-tutor-ui="2"] #main .navigation #btn-child-edit{display:inline-flex;font-size:12px;min-height:32px;padding:5px 7px!important}
@keyframes nav-invite{50%{translate:3px 0}}
@media(prefers-reduced-motion:reduce){#main .v2-nav-toggle:after{animation:none}}
@media(max-width:700px){body[data-tutor-ui="2"] #main .navigation{top:76px;width:min(252px,calc(100vw - 24px));max-height:calc(100dvh - 88px)}#main .v2-nav-toggle{padding:10px;font-size:15px;gap:8px}#main .page-heading{display:none}}

body[data-tutor-ui="2"] #main .navigation:not([hidden]){display:flex!important}
body[data-tutor-ui="2"].is-focus #main .topbar{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center}
body[data-tutor-ui="2"].is-focus #main .topbar>.page-heading{display:none}
body[data-tutor-ui="2"].is-focus #main .topbar>.v2-nav-toggle{grid-column:1;grid-row:1}
body[data-tutor-ui="2"].is-focus #main .topbar>.top-actions{grid-column:3;grid-row:1}
body[data-tutor-ui="2"].is-focus #main .topbar>.mentor{grid-column:2;grid-row:1;position:relative;left:auto;right:auto;top:auto;width:auto;min-width:0}

/* Long stems and inline formulas must stay inside the problem card. */
#board-problem, #bq-text, #board-problem > *, .workbench > *, #main .learning-canvas, #main #board-panel { min-width: 0; max-width: 100%; }
#bq-text { overflow-wrap: anywhere; word-break: normal; }
#bq-text .katex { display: inline-block; max-width: 100%; overflow-x: auto; overflow-y: hidden; vertical-align: middle; }
#bq-text .katex-display { max-width: 100%; overflow-x: auto; overflow-y: hidden; }

/* Keep the shared voice receipt compact. Its runtime anchors it to Leo; do not
   turn the two-column component into a large pseudo-headed card that hides him. */
body[data-tutor-ui="2"] #voice-hint.voice-feedback{max-width:calc(100vw - 24px);transition:opacity .25s ease!important}
body[data-tutor-ui="2"] #voice-hint.voice-feedback::before{content:none}
body[data-tutor-ui="2"].is-focus #voice-hint.voice-feedback,
body[data-tutor-ui="2"].layout-focus #voice-hint.voice-feedback{display:none!important}
@media(prefers-reduced-motion:reduce){body[data-tutor-ui="2"] #voice-hint.voice-feedback{transition:none!important}}

/* Content-driven adaptation: protect the board before shrinking controls. */
body[data-tutor-ui="2"] #main .main-shell,
body[data-tutor-ui="2"] #main .topbar,
body[data-tutor-ui="2"] #main .workbench,
body[data-tutor-ui="2"] #main .session-dock{max-width:100%;min-width:0}
#main .source-tools .v2-tools-entry{min-height:58px;padding:4px 15px 4px 8px;gap:8px;border-color:#b9c8ad;background:#f3f1df;color:#294b38;font-size:17px;font-weight:700;box-shadow:0 5px 14px #294b3817}
#main .source-tools .v2-tools-entry:hover{background:#e9eddc;box-shadow:0 7px 18px #294b3821}
#main .v2-toolbox-image{display:block;width:48px;height:48px;object-fit:contain;flex:none}
@media(min-width:701px) and (max-width:1100px){
 body[data-tutor-ui="2"] #main .workbench{grid-template-columns:clamp(172px,21vw,205px) minmax(0,1fr);gap:12px}
 body[data-tutor-ui="2"] #main .v2-panel{width:min(350px,48%)}
 body[data-tutor-ui="2"] #main .canvas-head{padding-inline:14px}
 body[data-tutor-ui="2"] #main .canvas-actions{min-width:0;overflow-x:auto;overscroll-behavior-inline:contain;scrollbar-width:none}
 body[data-tutor-ui="2"] #main .canvas-actions::-webkit-scrollbar{display:none}
}
@media(min-width:1180px){
 body[data-tutor-ui="2"] #main .learning-canvas:has(>.v2-source:not([hidden])) #board-panel{margin-right:390px}
 body[data-tutor-ui="2"] #main .learning-canvas:has(>.v2-source:not([hidden]))>.v2-welcome{right:414px}
 body[data-tutor-ui="2"].layout-focus #main .v2-source #stage{height:clamp(180px,28vh,300px)!important;min-height:180px}
}
@media(min-width:701px) and (max-height:760px){
 body[data-tutor-ui="2"] #main .topbar{height:68px}
 body[data-tutor-ui="2"]:not(.is-text) #main .mentor{grid-template-rows:minmax(96px,1fr) 84px 64px;min-height:0}
 body[data-tutor-ui="2"]:not(.is-text) #main .mentor-message{height:84px;padding-block:5px}
 body[data-tutor-ui="2"]:not(.is-text) #main .mentor-message p{height:55px;max-height:55px;line-height:1.5}
 body[data-tutor-ui="2"]:not(.is-text) #main .mentor-actions{height:64px}
 body[data-tutor-ui="2"]:not(.is-text) #main .v2-student-line{display:none!important}
 body[data-tutor-ui="2"] #main .session-dock.media-bar{min-height:58px;padding-block:6px}
}
@media(max-width:700px){
 body[data-tutor-ui="2"]{overflow-x:hidden;padding-bottom:env(safe-area-inset-bottom)}
 body[data-tutor-ui="2"] #main .topbar{padding-top:env(safe-area-inset-top)}
 body[data-tutor-ui="2"] #main .canvas-actions{min-width:0;max-width:72%;overflow-x:auto;overscroll-behavior-inline:contain;scrollbar-width:none}
 body[data-tutor-ui="2"] #main .canvas-actions::-webkit-scrollbar{display:none}
 body[data-tutor-ui="2"] #main .v2-panel{inset:51px 0 0;width:100%;max-width:100%;border-left:0}
 body[data-tutor-ui="2"] #main .session-dock.media-bar{padding-bottom:max(8px,env(safe-area-inset-bottom))}
 body[data-tutor-ui="2"] #voice-hint.voice-feedback{width:min(260px,calc(100vw - 24px))!important}
}

/* Keep recurring guidance compact: current question first, three short actions, no repeated coaching copy. */
body[data-tutor-ui="2"] #main .learning-canvas>.v2-scaffold-card:not([hidden]){max-height:116px;margin:5px 18px 7px;padding:10px 14px;grid-template-columns:minmax(0,1fr) auto;align-items:center;column-gap:12px;overflow:hidden;border-radius:12px}
body[data-tutor-ui="2"] #main .v2-scaffold-kicker,body[data-tutor-ui="2"] #main .v2-scaffold-help{display:none!important}
body[data-tutor-ui="2"] #main .v2-scaffold-card h2{grid-column:1;margin:0;font:600 clamp(17px,1.5vw,21px)/1.45 Georgia,"Songti SC",serif}
body[data-tutor-ui="2"] #main .v2-scaffold-help-buttons{grid-column:2;grid-row:1;display:flex;flex-direction:row;align-items:center;justify-content:flex-end;gap:3px}
body[data-tutor-ui="2"] #main .v2-scaffold-help-buttons button{min-height:34px;padding:6px 9px;border:0;background:transparent;color:#526443;font-size:12px;box-shadow:none}
body[data-tutor-ui="2"] #main .v2-scaffold-help-buttons button:hover{background:#ece9d9}
body[data-tutor-ui="2"] #main .v2-scaffold-card .v2-scaffold-dismiss{min-height:34px;padding:6px 9px;font-size:12px}
@media(max-width:700px){body[data-tutor-ui="2"] #main .learning-canvas>.v2-scaffold-card:not([hidden]){max-height:150px;margin:4px 8px;padding:9px 11px;grid-template-columns:1fr}body[data-tutor-ui="2"] #main .v2-scaffold-help-buttons{grid-column:1;grid-row:2;justify-content:flex-start}body[data-tutor-ui="2"] #main .v2-scaffold-card h2{font-size:17px}}

body[data-tutor-ui="2"].has-text-input #main .v2-text-reply:not([hidden]){display:grid;grid-template-columns:minmax(0,1fr) auto!important;gap:4px 10px;min-height:0;padding:8px 14px;border-radius:11px}
body[data-tutor-ui="2"] #main .v2-text-reply p{grid-column:1!important;height:auto!important;max-height:48px;margin:0;font-size:15px;line-height:1.55}
body[data-tutor-ui="2"] #main .v2-text-reply .v2-reply-expand{grid-column:2!important;grid-row:1;padding:0 4px;min-height:24px;font-size:11px}
/* 记录面板宽度自适配（2026-09-16 John 实测：打开「记录」右边看不到）。
   根因：面板宽 355px，而里面的 .chat 继承 1.0 版布局的 min-width:440px，容器不肯收缩，
   气泡整体顶出面板、被屏幕右缘切掉（实测气泡 right=1348 > 面板 right=1280），页面还多出横向滚动。
   这里只做三件事：容器允许收缩、面板自己裁溢出、长串能断行；字号按面板宽度收一档。 */
#main .v2-transcript{overflow:hidden}
#main .v2-transcript .chat,#main .v2-transcript .chat-panel,#main .v2-transcript #messages{min-width:0;max-width:100%;width:auto}
#main .v2-transcript .msg{font-size:15px;line-height:1.7;max-width:88%;overflow-wrap:anywhere}
#main .v2-transcript #messages{padding:14px}
#main .v2-transcript .v2-sheet-head{padding:12px 14px}
#main .v2-transcript .v2-sheet-head h3{font-size:15px}

/* Leo 头像下的「全部消息」入口（2026-09-16 John）：与挂断同一行、同一套按钮语汇；
   条数用同 mentor-actions 的次要色，宽度两个按钮均分（沿用 .v2-resume 那条两按钮规则的写法）。 */
#main .mentor-actions .v2-all-messages{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--line);background:var(--paper);color:var(--ink);border-radius:9px;padding:10px 12px;min-height:44px;font-size:16px;white-space:nowrap;box-shadow:none}
#main .mentor-actions .v2-all-messages .count{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
#main .mentor-actions .v2-all-messages .count:empty{display:none}
#main .mentor-actions .v2-all-messages[aria-expanded="true"]{background:var(--accent-soft,#e7efe4);border-color:var(--accent,#446c4a);color:var(--accent,#446c4a)}
body[data-tutor-ui="2"]:not(.is-text) #main .mentor-actions:has(.v2-all-messages){flex-direction:row;gap:6px;align-items:center;justify-content:center}
body[data-tutor-ui="2"]:not(.is-text) #main .mentor-actions:has(.v2-all-messages)>button{flex:1;min-width:0;width:auto;font-size:15px;padding:10px 8px}

/* Tutor identity is a pluggable presentation layer. Selection is child-scoped
   and locks while a voice room is connecting or active. */
#main .v2-tutor-picker{pointer-events:auto;position:relative;display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:11px;min-width:218px;min-height:44px;margin:0;padding:3px 10px 3px 12px;border:1px solid #cbd5c5;border-radius:13px;background:#fffef9;box-shadow:0 5px 16px #20392f12;transition:border-color .18s ease-out,background-color .18s ease-out,box-shadow .18s ease-out}
#main .v2-tutor-picker:hover{border-color:#aebda7;background:#fffffc;box-shadow:0 7px 20px #20392f18}
#main .v2-tutor-picker:focus-within{border-color:#8fa488;outline:3px solid #b88235;outline-offset:3px;box-shadow:0 7px 20px #20392f18}
#main .v2-tutor-picker>span{padding-right:11px;border-right:1px solid #dce3d8;color:#647168;font:700 11px/1 system-ui;letter-spacing:.035em;white-space:nowrap}
#main .v2-tutor-picker select{appearance:none;-webkit-appearance:none;width:100%;min-width:0;max-width:none;border:0;border-radius:0;outline:0;background:transparent;color:#274136;padding:10px 29px 10px 0;box-shadow:none;font:650 14px/1.2 system-ui;letter-spacing:-.01em;cursor:pointer;text-overflow:ellipsis}
#main .v2-tutor-picker::after{content:'';pointer-events:none;position:absolute;right:15px;top:50%;width:7px;height:7px;border-right:1.5px solid #66766a;border-bottom:1.5px solid #66766a;transform:translateY(-68%) rotate(45deg);transition:transform .18s ease-out}
#main .v2-tutor-picker:focus-within::after{transform:translateY(-45%) rotate(225deg)}
#main .v2-tutor-picker:has(select:disabled){opacity:.58;background:#f1f2ec;box-shadow:none}
#main .v2-tutor-picker select:disabled{cursor:not-allowed}
@media(max-width:900px){#main .v2-tutor-picker{min-width:180px;gap:9px;padding-left:10px}#main .v2-tutor-picker>span{padding-right:9px;font-size:10px}#main .v2-tutor-picker select{font-size:13px}}
@media(max-width:700px){#main .v2-tutor-picker{min-width:0;width:100%}}
#main .mia-avatar-fallback{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center top;pointer-events:none}

/* 对话记录入口（John 2026-09-17）：放在发送键旁边、带条数，不藏在「更多」里。输入框 | 说话 | 对话记录 | 发送 */
/* 输入区是固定列的网格：往里加按钮必须同时给它一个格子，否则会被挤到新的一行、
   把整块撑高，屏幕小的时候输入框和发送键就被顶出可视区（2026-09-19 小喇叭上线当场踩到）。 */
body[data-tutor-ui="2"] #main .session-dock .v2-text-composer{grid-template-columns:minmax(120px,1fr) 164px auto auto 72px}
body[data-tutor-ui="2"] #main .v2-text-composer #btn-send{grid-column:5;grid-row:1}
body[data-tutor-ui="2"] #main .v2-text-composer .qm-aloud{grid-column:3;grid-row:1;min-height:54px}
body[data-tutor-ui="2"] #main .v2-text-composer .v2-history-btn{grid-column:4;grid-row:1;min-height:54px;display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:8px 14px;border-radius:12px;border:1.5px solid #547b59;background:#fff;color:#2f5538;font-size:15px;font-weight:650;white-space:nowrap;cursor:pointer}
body[data-tutor-ui="2"] #main .v2-text-composer .v2-history-btn .count{min-width:22px;height:22px;padding:0 6px;box-sizing:border-box;border-radius:11px;background:#547b59;color:#fff;font-size:12px;line-height:22px;text-align:center;font-variant-numeric:tabular-nums}
body[data-tutor-ui="2"] #main .v2-text-composer .v2-history-btn .count:empty{display:none}
body[data-tutor-ui="2"] #main .v2-text-composer .v2-history-btn[aria-expanded="true"]{background:#e1ebd6}
body[data-tutor-ui="2"] #main .v2-text-composer .v2-history-btn:focus-visible{outline:2px solid #547b59;outline-offset:2px}
@media(max-width:700px){
 body[data-tutor-ui="2"] #main .session-dock .v2-text-composer{grid-template-columns:minmax(0,1fr) auto auto 68px}
 body[data-tutor-ui="2"] #main .v2-text-composer #btn-mic{grid-column:1;grid-row:2}
 body[data-tutor-ui="2"] #main .v2-text-composer .qm-aloud{grid-column:2;grid-row:2;min-height:54px;padding:0 10px}
 body[data-tutor-ui="2"] #main .v2-text-composer .qm-aloud span{display:none}   /* 窄屏只留喇叭图标，省出宽度给发送 */
 body[data-tutor-ui="2"] #main .v2-text-composer .v2-history-btn{grid-column:3;grid-row:2;padding:8px 10px;font-size:14px}
 body[data-tutor-ui="2"] #main .v2-text-composer #btn-send{grid-column:4;grid-row:2}
}

/* Tutor controls: one tactile size and one icon language, without changing actions. */
body[data-tutor-ui="2"] #main .topbar{--control-size:48px}
body[data-tutor-ui="2"] #main .top-actions{gap:8px;min-width:0}
body[data-tutor-ui="2"] #main .v2-nav-toggle,
body[data-tutor-ui="2"] #main .top-actions .v2-new-session,
body[data-tutor-ui="2"] #main .top-actions .v2-language-switch,
body[data-tutor-ui="2"] #main .top-actions .v2-tutor-picker,
body[data-tutor-ui="2"] #main .top-actions .leo-letter,
body[data-tutor-ui="2"] #main .top-actions #bean-badge,
body[data-tutor-ui="2"] #main .mode-switch{height:var(--control-size);min-height:var(--control-size);box-sizing:border-box;border-radius:14px}
body[data-tutor-ui="2"] #main .v2-nav-toggle,
body[data-tutor-ui="2"] #main .top-actions .v2-new-session,
body[data-tutor-ui="2"] #main .top-actions .v2-language-switch,
body[data-tutor-ui="2"] #main .mode-switch,
body[data-tutor-ui="2"] #main .top-actions .leo-letter,
body[data-tutor-ui="2"] #main .top-actions #bean-badge{border:1px solid #cad7c8;background:linear-gradient(155deg,#fffefa,#edf3e9);color:#315c43;box-shadow:inset 0 1px #fff,0 3px 0 #becfbc,0 7px 14px #203d3019}
body[data-tutor-ui="2"] #main .v2-nav-toggle{width:var(--control-size);min-width:var(--control-size);padding:0;display:grid;place-items:center;font-size:0;gap:0}
body[data-tutor-ui="2"] #main .v2-nav-toggle::after{content:'';width:22px;height:22px;transform:none;animation:none;border:0;background:currentColor;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M4 6h16v2H4zm0 5h16v2H4zm0 5h16v2H4z'/%3E%3C/svg%3E") center/contain no-repeat}
body[data-tutor-ui="2"] #main .v2-nav-toggle[aria-expanded="true"]::after{transform:none}
body[data-tutor-ui="2"] #main .top-actions .v2-new-session{display:grid;place-items:center;width:var(--control-size);min-width:var(--control-size);padding:0}
body[data-tutor-ui="2"] #main .top-actions .v2-new-session .v2-action-icon{width:22px;height:22px}
body[data-tutor-ui="2"] #main .top-actions .v2-language-switch{min-width:90px;width:90px;padding:4px;grid-template-columns:1fr 1fr;overflow:hidden}
body[data-tutor-ui="2"] #main .top-actions .v2-language-switch .lang-knob{width:38px;height:37px;border-radius:10px;box-shadow:0 2px 5px #203d3028}
body[data-tutor-ui="2"] #main .top-actions .v2-language-switch.en .lang-knob{transform:translateX(42px)}
body[data-tutor-ui="2"] #main .top-actions .v2-language-switch span{font-size:12px;padding:9px 0}
body[data-tutor-ui="2"] #main .mode-switch{display:flex;align-items:center;gap:2px;padding:3px;flex:none}
body[data-tutor-ui="2"] #main .mode-switch button{display:grid;place-items:center;width:40px;min-width:40px;height:40px;min-height:40px;padding:0;border:0;border-radius:10px;font-size:0;line-height:0;background:transparent;color:#315c43;box-shadow:none}
body[data-tutor-ui="2"] #main .mode-switch button .v2-action-icon{width:22px;height:22px;flex-basis:22px}
body[data-tutor-ui="2"] #main .mode-switch button .v2-action-label{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
body[data-tutor-ui="2"] #main .mode-switch button[aria-pressed="true"]{background:#315c43;color:#fff;box-shadow:inset 0 1px #ffffff35,0 2px 4px #203d3028}
body[data-tutor-ui="2"] #main .top-actions .v2-tutor-picker{box-shadow:inset 0 1px #fff,0 3px 0 #becfbc,0 7px 14px #203d3019}
body[data-tutor-ui="2"] #main .top-actions .leo-letter{display:inline-flex;align-items:center;justify-content:center;min-width:48px;padding:0 8px;gap:4px}
body[data-tutor-ui="2"] #main .top-actions .leo-letter .txt{font-size:0}
body[data-tutor-ui="2"] #main .top-actions #bean-badge{display:inline-flex;align-items:center;padding:0 10px;margin:0}
body[data-tutor-ui="2"] #main .top-actions :is(button,a,select):focus-visible,
body[data-tutor-ui="2"] #main .source-tools :is(button,a):focus-visible,
body[data-tutor-ui="2"] #main #btn-solved:focus-visible{outline:3px solid #b88235;outline-offset:3px}
body[data-tutor-ui="2"] #main .v2-nav-toggle:hover,
body[data-tutor-ui="2"] #main .top-actions :is(.v2-new-session,.v2-language-switch,.leo-letter):hover{transform:translateY(-1px);background:#fffefa}
body[data-tutor-ui="2"] #main .v2-nav-toggle:active,
body[data-tutor-ui="2"] #main .top-actions :is(.v2-new-session,.leo-letter):active{transform:translateY(2px);box-shadow:inset 0 2px 5px #203d301b}

body[data-tutor-ui="2"] #main .session-dock.media-bar{align-items:center;min-height:64px;padding:7px 0;gap:7px}
body[data-tutor-ui="2"] #main .source-tools{gap:7px;align-items:center;overflow-x:auto;flex-wrap:nowrap;scrollbar-width:none}
body[data-tutor-ui="2"] #main .source-tools::-webkit-scrollbar{display:none}
body[data-tutor-ui="2"] #main .source-tools :is(button.tool,a.tool,#v2-input-toggle,.v2-switch-problem,.v2-tools-entry),
body[data-tutor-ui="2"] #main #btn-solved{display:inline-grid;place-items:center;flex:0 0 48px;width:48px;min-width:48px;height:48px;min-height:48px;box-sizing:border-box;margin:0;padding:0;border:1px solid #cad7c8;border-radius:14px;background:linear-gradient(155deg,#fffefa,#edf3e9);color:#315c43;box-shadow:inset 0 1px #fff,0 3px 0 #becfbc,0 7px 14px #203d3019;font-size:0;line-height:0;white-space:nowrap;gap:0}
body[data-tutor-ui="2"] #main .source-tools .v2-action-icon,
body[data-tutor-ui="2"] #main #btn-solved .v2-action-icon{display:inline-grid!important;width:22px;height:22px;flex-basis:22px}
body[data-tutor-ui="2"] #main .source-tools .v2-action-label,
body[data-tutor-ui="2"] #main .source-tools .tl{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
body[data-tutor-ui="2"] #main .source-tools .ti{display:none!important}
body[data-tutor-ui="2"] #main .source-tools .v2-toolbox-image{width:26px;height:26px}
body[data-tutor-ui="2"] #main #v2-capture-entry{background:linear-gradient(155deg,#4d7956,#315c43);border-color:#315c43;color:#fff;box-shadow:inset 0 1px #ffffff40,0 3px 0 #244635,0 8px 15px #203d3029}
body[data-tutor-ui="2"] #main .v2-switch-problem.is-armed{background:#fce9c8;border-color:#d29b40;color:#644213;box-shadow:inset 0 1px #fff,0 3px 0 #c99039,0 7px 14px #aa7a3028}
body[data-tutor-ui="2"] #main #btn-solved{background:linear-gradient(155deg,#eef3ca,#dbe6a6);border-color:#bdc88e;color:#385240;box-shadow:inset 0 1px #fff,0 3px 0 #a6b479,0 7px 14px #203d3019}
body[data-tutor-ui="2"] #main .source-tools :is(button.tool,a.tool,#v2-input-toggle,.v2-switch-problem,.v2-tools-entry):hover:not(:disabled),
body[data-tutor-ui="2"] #main #btn-solved:hover{transform:translateY(-1px);filter:brightness(1.03)}
body[data-tutor-ui="2"] #main .source-tools :is(button.tool,a.tool,#v2-input-toggle,.v2-switch-problem,.v2-tools-entry):active:not(:disabled),
body[data-tutor-ui="2"] #main #btn-solved:active{transform:translateY(2px);box-shadow:inset 0 2px 5px #203d301b}
body[data-tutor-ui="2"] #main .source-tools button:disabled{opacity:.5;box-shadow:none;cursor:not-allowed}
@media(max-width:700px){body[data-tutor-ui="2"] #main .topbar{--control-size:44px;gap:5px}body[data-tutor-ui="2"] #main .top-actions{gap:5px}body[data-tutor-ui="2"] #main .top-actions .v2-tutor-picker{min-width:0;width:120px}body[data-tutor-ui="2"] #main .top-actions .v2-tutor-picker>span{display:none}body[data-tutor-ui="2"] #main .source-tools :is(button.tool,a.tool,#v2-input-toggle,.v2-switch-problem,.v2-tools-entry),body[data-tutor-ui="2"] #main #btn-solved{flex-basis:44px;width:44px;min-width:44px;height:44px;min-height:44px}body[data-tutor-ui="2"] #main .source-tools{justify-content:flex-start}}
@media(prefers-reduced-motion:reduce){body[data-tutor-ui="2"] #main .topbar button,body[data-tutor-ui="2"] #main .source-tools button{transition:none!important}}

/* The composer uses the same keys; names stay in the DOM for assistive tech. */
body[data-tutor-ui="2"] #main .session-dock .v2-text-composer{grid-template-columns:minmax(120px,1fr) repeat(4,48px);align-items:center;gap:7px;padding:8px!important}
body[data-tutor-ui="2"] #main .v2-text-composer :is(#btn-mic,.qm-aloud,.v2-history-btn,#btn-send){display:inline-grid;place-items:center;box-sizing:border-box;width:48px;min-width:48px;height:48px;min-height:48px;padding:0;border:1px solid #cad7c8;border-radius:14px;background:linear-gradient(155deg,#fffefa,#edf3e9);color:#315c43;box-shadow:inset 0 1px #fff,0 3px 0 #becfbc,0 7px 14px #203d3019;font-size:0;line-height:0;cursor:pointer}
body[data-tutor-ui="2"] #main .v2-text-composer :is(#btn-mic,.v2-history-btn,#btn-send)::before{content:'';display:block;width:22px;height:22px;background:currentColor;mask-position:center;mask-size:contain;mask-repeat:no-repeat}
body[data-tutor-ui="2"] #main .v2-text-composer #btn-mic::before{mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M12 15a4 4 0 0 0 4-4V6a4 4 0 0 0-8 0v5a4 4 0 0 0 4 4Zm-2-9a2 2 0 0 1 4 0v5a2 2 0 0 1-4 0V6Zm8 5a6 6 0 0 1-12 0H4a8 8 0 0 0 7 7.94V21H8v2h8v-2h-3v-2.06A8 8 0 0 0 20 11h-2Z'/%3E%3C/svg%3E")}
body[data-tutor-ui="2"] #main .v2-text-composer .v2-history-btn::before{mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M4 3h16a2 2 0 0 1 2 2v12a2 2 0 0 1-2 2H9l-5 3v-3a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2Zm0 2v12h2v2l2.4-2H20V5H4Zm3 3h10v2H7zm0 4h7v2H7z'/%3E%3C/svg%3E")}
body[data-tutor-ui="2"] #main .v2-text-composer #btn-send::before{mask-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M2 21 23 12 2 3l2 7 11 2-11 2-2 7Z'/%3E%3C/svg%3E")}
body[data-tutor-ui="2"] #main .v2-text-composer .qm-aloud svg{width:22px;height:22px}
body[data-tutor-ui="2"] #main .v2-text-composer :is(.qm-aloud,.v2-history-btn) span.label,
body[data-tutor-ui="2"] #main .v2-text-composer .qm-aloud span{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
body[data-tutor-ui="2"] #main .v2-text-composer .v2-history-btn .count{position:absolute;top:-5px;right:-5px;min-width:18px;height:18px;padding:0 4px;line-height:18px;font-size:11px}
body[data-tutor-ui="2"] #main .v2-text-composer .v2-history-btn{position:relative}
body[data-tutor-ui="2"] #main .v2-text-composer #btn-send{background:linear-gradient(155deg,#4d7956,#315c43);color:#fff;border-color:#315c43;box-shadow:inset 0 1px #ffffff40,0 3px 0 #244635,0 8px 15px #203d3029}
body[data-tutor-ui="2"] #main .v2-text-composer :is(#btn-mic,.qm-aloud,.v2-history-btn,#btn-send):focus-visible{outline:3px solid #b88235;outline-offset:3px}
/* Text tutoring dictation: a click must visibly arm the microphone immediately. */
body[data-tutor-ui="2"] #main .v2-text-composer{position:relative}
body[data-tutor-ui="2"] #main .v2-text-composer #btn-mic[data-dictation-state="starting"],
body[data-tutor-ui="2"] #main .v2-text-composer #btn-mic[data-dictation-state="recording"]{position:relative;background:#cb453e;color:#fff;border-color:#aa322e;box-shadow:0 0 0 4px #cb453e27,0 6px 16px #a5363052}
body[data-tutor-ui="2"] #main .v2-text-composer #btn-mic[data-dictation-state="recording"]::after{content:"";position:absolute;left:9px;right:9px;bottom:4px;height:3px;border-radius:5px;background:#fff;transform:scaleX(max(.15,var(--mic-level, .2)));transform-origin:center;transition:transform 90ms linear}
body[data-tutor-ui="2"] #main .v2-text-composer #btn-mic[data-dictation-state="processing"]{background:#f7eacb;color:#735719;border-color:#d7b86f}
body[data-tutor-ui="2"] #main .v2-text-composer .v2-mic-status{position:absolute;z-index:8;left:8px;bottom:calc(100% + 7px);max-width:min(440px,90vw);padding:8px 12px;border-radius:12px;background:#fff9ed;border:1px solid #d5c5a2;box-shadow:0 8px 22px #283b2826;color:#384c3a;font-size:14px;line-height:1.4;white-space:normal;overflow-wrap:anywhere}
body[data-tutor-ui="2"] #main .v2-text-composer .v2-mic-status[hidden]{display:none}
body[data-tutor-ui="2"] #main .v2-text-composer .v2-mic-error{grid-column:1/-1;padding:8px 12px;border:1px solid #dcaaa4;border-radius:10px;background:#fff1ee;color:#8c2f27;font:14px/1.45 system-ui,sans-serif}
body[data-tutor-ui="2"] #main .v2-text-composer .v2-mic-error[hidden]{display:none}
@media(max-width:700px){body[data-tutor-ui="2"] #main .session-dock .v2-text-composer{grid-template-columns:repeat(4,48px) minmax(0,1fr);justify-content:start}body[data-tutor-ui="2"] #main .v2-text-composer #chat-input{grid-column:1/-1;grid-row:1}body[data-tutor-ui="2"] #main .v2-text-composer #btn-mic{grid-column:1;grid-row:2}body[data-tutor-ui="2"] #main .v2-text-composer .qm-aloud{grid-column:2;grid-row:2}body[data-tutor-ui="2"] #main .v2-text-composer .v2-history-btn{grid-column:3;grid-row:2}body[data-tutor-ui="2"] #main .v2-text-composer #btn-send{grid-column:4;grid-row:2}}

body[data-tutor-ui="2"] .v2-control-tooltip{position:fixed;z-index:10000;max-width:min(240px,calc(100vw - 16px));box-sizing:border-box;padding:8px 11px;border:1px solid #436850;border-radius:10px;background:#244735;color:#fff;font:600 13px/1.35 system-ui,"PingFang SC",sans-serif;white-space:nowrap;text-align:center;box-shadow:0 6px 16px #203d3035;pointer-events:none}
body[data-tutor-ui="2"] .v2-control-tooltip[hidden]{display:none!important}

/* Tutor picker stays a native select; only its visible face becomes the current portrait. */
body[data-tutor-ui="2"] #main .top-actions .v2-tutor-picker{display:grid;place-items:center;position:relative;flex:0 0 var(--control-size);width:var(--control-size);min-width:var(--control-size);height:var(--control-size);min-height:var(--control-size);padding:3px;overflow:hidden}
body[data-tutor-ui="2"] #main .top-actions .v2-tutor-picker>span{display:none}
body[data-tutor-ui="2"] #main .top-actions .v2-tutor-picker::after{display:none}
body[data-tutor-ui="2"] #main .top-actions .v2-tutor-avatar{display:block;width:calc(var(--control-size) - 8px);height:calc(var(--control-size) - 8px);min-width:calc(var(--control-size) - 8px);border-radius:10px;object-fit:cover;object-position:center 22%;background:#dfe7d9;pointer-events:none}
body[data-tutor-ui="2"] #main .top-actions .v2-tutor-picker select{position:absolute;inset:0;width:100%;height:100%;max-width:none;margin:0;padding:0;opacity:0;cursor:pointer}
body[data-tutor-ui="2"] #main .top-actions .v2-tutor-picker:has(select:disabled){opacity:.58}
body[data-tutor-ui="2"] #main .top-actions .v2-tutor-picker[hidden]{display:none!important}
@media(max-width:700px){
 body[data-tutor-ui="2"] #main .topbar>.top-actions>.v2-tutor-picker,
 .ui2-phone body[data-tutor-ui="2"] #main .topbar>.top-actions>.v2-tutor-picker{display:grid!important;place-items:center!important;justify-self:start;grid-template-columns:1fr!important;flex:0 0 var(--control-size)!important;width:var(--control-size)!important;min-width:var(--control-size)!important;max-width:var(--control-size)!important;height:var(--control-size)!important;min-height:var(--control-size)!important;padding:3px!important;gap:0!important;overflow:hidden!important}
 html body[data-tutor-ui="2"] #main .topbar>.top-actions>.v2-tutor-picker>span{display:none!important}
 body[data-tutor-ui="2"] #main .topbar>.top-actions>.v2-tutor-picker::after{display:none!important}
 body[data-tutor-ui="2"] #main .topbar>.top-actions>.v2-tutor-picker select{position:absolute!important;inset:0!important;width:100%!important;height:100%!important;min-height:0!important;padding:0!important;opacity:0!important}
}