:root{color-scheme:light;--bg:#f7f8fa;--panel:#fff;--text:#20242a;--muted:#68737e;--line:#e7e9ed;--accent:#188c8c;--soft:#dff4f2;--red:#b42318;--redbg:#fff0ee;--green:#16704a;--greenbg:#e9f8ef}html[data-theme=dark]{color-scheme:dark;--bg:#111417;--panel:#181c20;--text:#eff3f6;--muted:#a0a8b0;--line:#2b3137;--accent:#4fb8b4;--soft:#143333;--red:#ffb5ad;--redbg:#412422;--green:#8bdfaf;--greenbg:#18372a}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC",sans-serif}a{color:var(--accent);text-decoration:none}button,input,textarea,select{font:inherit}button,.button{cursor:pointer;border:1px solid var(--line);border-radius:8px;background:var(--panel);color:var(--text);padding:7px 13px;display:inline-block}button:hover,.button:hover{border-color:var(--accent);color:var(--accent)}button:disabled{cursor:wait;opacity:.55}.primary{background:var(--accent);color:var(--panel);border-color:var(--accent)}.primary:hover{color:var(--panel);filter:brightness(.94)}:focus-visible{outline:2px solid var(--accent);outline-offset:3px}input,select,textarea{border:1px solid var(--line);background:var(--panel);color:var(--text);border-radius:8px;padding:9px 10px;max-width:100%;width:100%}textarea{min-height:100px;resize:vertical}input[type=checkbox]{width:auto}.top{display:flex;align-items:center;flex-wrap:wrap;gap:12px;padding:17px max(20px,calc((100vw - 1260px)/2));border-bottom:1px solid var(--line);background:var(--panel)}.brand{font-weight:700;font-size:19px}.divider{color:var(--line)}#identity{margin-left:auto;color:var(--muted);font-size:12px}main{max-width:1260px;margin:26px auto;padding:0 20px}h1{font-size:26px;margin:0 0 4px}h2{font-size:18px;margin:0 0 14px}h3{font-size:15px;margin:0 0 8px}p{margin:8px 0}.muted,small{color:var(--muted)}.intro{margin-bottom:22px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:20px;margin-bottom:18px;min-width:0}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.stats{display:flex;flex-wrap:wrap;gap:12px;margin:18px 0}.stat{background:var(--panel);border:1px solid var(--line);border-radius:10px;min-width:135px;padding:12px 18px}.stat strong{font-size:25px;display:block;color:var(--accent)}.toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:14px}.toolbar input{flex:1;min-width:160px}.toolbar select{width:auto;max-width:250px}.nav{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}.nav button[aria-current=page]{background:var(--soft);border-color:var(--accent);color:var(--accent)}label{display:block;margin-bottom:12px}label>span{display:block;margin-bottom:5px;font-weight:500}form .actions{display:flex;gap:10px;align-items:center;margin-top:14px}.scroll{overflow:auto}table{border-collapse:collapse;width:100%;font-size:13px}th,td{text-align:left;padding:11px 12px;border-bottom:1px solid var(--line);vertical-align:top;white-space:nowrap}td.wrap{white-space:normal;min-width:180px;max-width:450px}th{color:var(--muted);font-weight:500}.badge{display:inline-block;border-radius:5px;padding:2px 7px;font-size:12px;background:var(--soft);color:var(--accent)}.badge.red{background:var(--redbg);color:var(--red)}.badge.green{background:var(--greenbg);color:var(--green)}.pre{white-space:pre-wrap;overflow-wrap:anywhere}.task{border-left:3px solid var(--red);padding:14px 16px;background:var(--panel);border-radius:0 8px 8px 0;margin:12px 0;box-shadow:0 0 0 1px var(--line)}.task.green{border-left-color:var(--green)}.task header{display:flex;gap:12px;justify-content:space-between;align-items:baseline;flex-wrap:wrap}.record{padding:12px 0;border-bottom:1px solid var(--line)}.message{padding:12px 16px;border:1px solid var(--line);border-radius:10px;margin:10px 0;max-width:90%;background:var(--bg)}.message.mine{margin-left:auto;background:var(--soft)}.messages{max-height:420px;overflow:auto}.empty{padding:24px 8px;color:var(--muted);text-align:center}.gate{max-width:780px;margin:35px auto}.required-note{background:var(--soft);padding:14px;border-radius:8px;margin-bottom:18px}.detail-title{display:flex;align-items:center;justify-content:space-between;gap:12px}details{margin:12px 0}summary{cursor:pointer;color:var(--accent)}#notice:not(:empty){position:sticky;top:8px;z-index:5;padding:12px 16px;border-radius:8px;margin-bottom:15px;background:var(--soft);border:1px solid var(--accent)}#notice.error{background:var(--redbg);border-color:var(--red);color:var(--red)}footer{text-align:center;color:var(--muted);padding:24px 16px 35px;font-size:12px}.contacts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px 20px;margin:15px 0}.contacts div{overflow-wrap:anywhere}.account-list{max-height:380px;overflow:auto}.account-row{display:flex;align-items:center;gap:12px;justify-content:space-between;border-bottom:1px solid var(--line);padding:10px 0}.account-row select{max-width:180px}.account-row div:first-child{flex:1}button.danger{color:var(--red)}@media(max-width:760px){main{padding:0 12px;margin-top:18px}.top{padding:12px;gap:8px}.top strong{font-size:13px}#identity{margin-left:0}.grid,.contacts{grid-template-columns:1fr}.panel{padding:15px}.stats{gap:8px}.stat{flex:1;min-width:95px;padding:9px}.account-row{flex-wrap:wrap}.message{max-width:100%}h1{font-size:22px}}

#role-view{width:auto;max-width:180px;padding:7px 10px}#role-view[hidden]{display:none}

td button+button{margin-left:6px}

/* Student workspace: persistent identity with vertical section tabs. */
[hidden]{display:none!important}.student-workspace{padding:22px}.detail-title h2{margin-bottom:2px;font-size:22px}.detail-title p{margin:0}.persistent-contacts{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:14px 18px;margin:18px 0 24px;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px 20px}.persistent-contacts small{display:block;font-size:12px}.persistent-contacts span{display:block;overflow-wrap:anywhere}.detail-layout{display:grid;grid-template-columns:150px minmax(0,1fr);gap:26px;align-items:start}.detail-tabs{display:flex;flex-direction:column;gap:6px;position:sticky;top:16px}.detail-tabs button{text-align:left;border-color:transparent;padding:11px 15px;white-space:nowrap}.detail-tabs button[aria-selected=true]{background:var(--soft);border-color:var(--accent);color:var(--accent);font-weight:600}.detail-content{min-width:0;border-left:1px solid var(--line);padding-left:26px;min-height:320px}.detail-content h2{margin-bottom:10px}.detail-content [role=tabpanel]{min-width:0}.overview-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:20px 0}.overview-card{text-align:left;padding:18px;background:var(--bg)}.overview-card span{color:var(--muted);display:block}.overview-card strong{display:block;font-size:25px;color:var(--accent);margin-top:4px}.editor-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin:8px 0 14px}.markdown-preview{padding:16px;border:1px dashed var(--accent);border-radius:8px;margin:0 0 16px;background:var(--bg)}.guidance-record{padding:20px 0}.markdown-body{overflow-wrap:anywhere;line-height:1.8}.markdown-body>:first-child{margin-top:10px}.markdown-body h1{font-size:22px}.markdown-body h2{font-size:20px}.markdown-body h3{font-size:17px}.markdown-body h1,.markdown-body h2,.markdown-body h3{margin:18px 0 8px}.markdown-body ul,.markdown-body ol{padding-left:24px}.markdown-body blockquote{margin:14px 0;border-left:3px solid var(--accent);padding:4px 14px;color:var(--muted);background:var(--bg)}.markdown-body pre{white-space:pre;overflow:auto;padding:14px;background:var(--bg);border:1px solid var(--line);border-radius:8px}.markdown-body code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.92em;background:var(--bg);padding:2px 4px;border-radius:4px}.markdown-body pre code{padding:0}.markdown-body table{display:block;overflow:auto;margin:14px 0;max-width:100%}.markdown-body td,.markdown-body th{white-space:normal;min-width:95px;border:1px solid var(--line)}.markdown-body a{text-decoration:underline}.markdown-body hr{border:0;border-top:1px solid var(--line);margin:18px 0}
@media(max-width:760px){.student-workspace{padding:14px}.persistent-contacts{grid-template-columns:repeat(2,minmax(0,1fr));padding:12px;gap:10px;margin:14px 0 18px}.detail-title{align-items:flex-start}.detail-title h2{font-size:19px}.detail-title button{padding:6px 8px;font-size:12px;flex-shrink:0}.detail-layout{grid-template-columns:78px minmax(0,1fr);gap:10px}.detail-tabs button{padding:9px 6px;font-size:12px}.detail-content{padding-left:10px}.detail-content h2{font-size:17px}.overview-grid{grid-template-columns:1fr;gap:9px;margin:14px 0}.overview-card{padding:12px}.overview-card strong{font-size:21px}.task{padding:12px}.task header{gap:4px}.editor-toolbar button{font-size:12px}.markdown-body h1{font-size:20px}.markdown-body h2{font-size:18px}.markdown-body h3{font-size:16px}}
.student-summary{position:sticky;top:0;z-index:3;background:var(--panel);padding-top:8px;padding-bottom:1px;border-bottom:1px solid var(--line);margin-bottom:20px}.student-summary .persistent-contacts{margin-bottom:14px}.detail-tabs{top:calc(var(--summary-height,180px) + 12px)}#notice:not(:empty){position:static}.student-workspace{padding-top:14px}
.guidance-compose{border:1px solid var(--line);border-radius:8px;padding:12px 14px;margin:16px 0}.guidance-compose summary{font-weight:600}.guidance-compose[open] summary{margin-bottom:14px}

.milestones{padding:0 0 14px;min-width:0}.milestone-heading{display:flex;justify-content:space-between;align-items:center;gap:12px}.milestone-heading h3{margin:0}.milestone-heading button{font-size:12px;padding:4px 10px}.milestone-legend{font-size:12px;color:var(--muted);margin:4px 0 10px}.milestone-strip{display:flex;gap:12px;overflow-x:auto;padding:4px 4px 10px;scrollbar-width:thin}.milestone-card{display:flex;align-items:center;gap:12px;flex:0 0 225px;padding:11px 13px;text-align:left;background:var(--bg)}.milestone-copy{min-width:0;display:grid;gap:2px}.milestone-copy strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px}.milestone-copy small,.milestone-status{font-size:11px}.milestone-status.green{color:var(--green)}.milestone-status.red{color:var(--red)}.milestone-status.gray{color:var(--muted)}.led{width:16px;height:16px;flex:0 0 16px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#dce2e6,#7c8790 65%);border:1px solid #65717b;box-shadow:inset 0 -2px 3px #0003}.led.green{background:radial-gradient(circle at 35% 25%,#e1ffe9,#25d967 48%,#078c3d 90%);border-color:#0b9444;box-shadow:0 0 7px #23d563aa,0 0 16px #23d56355,inset 0 1px 2px #fff9}.led.red{background:radial-gradient(circle at 35% 25%,#ffe8e5,#ff5146 48%,#b51c17 90%);border-color:#ca2e26;box-shadow:0 0 7px #f44336aa,0 0 16px #f4433655,inset 0 1px 2px #fff9}.badge.gray{background:var(--bg);color:var(--muted)}.workspace-dialog{width:min(640px,calc(100vw - 24px));max-height:85dvh;overflow:auto;border:1px solid var(--line);border-radius:14px;background:var(--panel);color:var(--text);padding:22px}.workspace-dialog::backdrop{background:#10202788}.dialog-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:16px}.dialog-heading h2{overflow-wrap:anywhere}.dialog-heading button{flex-shrink:0}.workspace-dialog form{margin-top:18px}.form-feedback:empty{display:none}.form-feedback,.upload-error{color:var(--red)}.upload-progress{margin:12px 0}.upload-row{display:flex;justify-content:space-between;gap:14px;border-bottom:1px solid var(--line);padding:8px 0;overflow-wrap:anywhere}.upload-row span{min-width:0}.upload-row small{flex-shrink:0;max-width:50%}.guidance-time{font-size:15px;margin:0;color:var(--text)}.guidance-record{border:0;padding:16px 0}.guidance-record>hr{border:0;border-top:1px solid var(--line);margin:14px 0}.markdown-body img{display:block;max-width:100%;height:auto;border-radius:8px;margin:12px 0}.image-upload{padding:12px;border:1px dashed var(--line);border-radius:8px}.chat-list{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:16px;max-height:440px;min-height:180px;overflow:auto}.chat-row{display:flex;margin:12px 0}.chat-row.from-teacher{justify-content:flex-end}.chat-row.from-student{justify-content:flex-start}.chat-bubble{max-width:85%;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:var(--panel);overflow-wrap:anywhere}.from-teacher .chat-bubble{background:var(--soft);border-top-right-radius:3px}.from-student .chat-bubble{border-top-left-radius:3px}.chat-bubble small{font-size:11px}.chat-bubble p{margin-bottom:0}.chat-panel>form{margin-top:14px}.chat-panel textarea{min-height:76px}.student-summary .persistent-contacts{margin-bottom:10px}
@media(max-width:760px){.milestone-card{flex-basis:200px;padding:8px 10px}.milestone-legend{font-size:10px}.milestone-strip{gap:8px}.persistent-contacts{gap:6px 12px;padding:9px}.persistent-contacts small{font-size:10px}.persistent-contacts span{font-size:12px}.guidance-time{font-size:13px}.workspace-dialog{padding:16px}.chat-list{padding:8px}.chat-bubble{max-width:95%;padding:9px}.upload-row{flex-direction:column;gap:3px}.upload-row small{max-width:100%}}
/* Keep long records inside their own pane so fixed student details never cover controls. */
.student-summary .persistent-contacts{padding:10px 14px;gap:6px 18px;margin-top:10px}.student-summary .persistent-contacts small{font-size:11px}.student-summary .persistent-contacts span{font-size:13px}.student-summary .detail-title h2{font-size:20px}.student-summary .detail-title p{font-size:12px}.detail-content{overflow:auto;min-height:0;max-height:max(220px,calc(100dvh - var(--summary-height,300px) - 40px));padding-right:6px;scroll-padding-top:14px}.detail-content [role=tabpanel]{padding-bottom:10px}.detail-tabs{position:static}.milestone-strip{padding-bottom:6px}.milestones{padding-bottom:10px}
@media(max-width:760px){.student-summary .persistent-contacts{padding:8px;gap:4px 12px}.student-summary .persistent-contacts span{font-size:12px}.student-summary .persistent-contacts small{font-size:10px}.student-summary .detail-title h2{font-size:18px}.detail-content{padding-right:3px}.milestone-card{flex-basis:190px}}
.chat-panel{display:flex;flex-direction:column;height:max(280px,calc(100dvh - var(--summary-height,300px) - 68px))}.chat-panel>.chat-list{flex:1;min-height:80px;max-height:none}.chat-panel>h2,.chat-panel>p,.chat-panel>form{flex-shrink:0}.chat-panel>form{margin-top:8px}.chat-panel textarea{height:58px;min-height:58px}.chat-panel label{margin-bottom:8px}
/* Dedicated full-height student workspace: identity stays put, only the right pane scrolls. */
body.student-workspace-mode{height:100dvh;display:flex;flex-direction:column;overflow:hidden}.student-workspace-mode>.top{flex-shrink:0}.student-workspace-mode>main{flex:1;min-height:0;width:100%;margin:12px auto 0;display:flex;flex-direction:column}.student-workspace-mode #app{display:flex;flex-direction:column;flex:1;min-height:0}.student-workspace-mode #app>.intro,.student-workspace-mode #app>.nav,.student-workspace-mode>footer{display:none}.student-workspace-mode .student-workspace{flex:1;min-height:0;display:flex;flex-direction:column;margin-bottom:12px}.student-workspace-mode .student-summary{position:static;flex-shrink:0;margin-bottom:14px}.student-workspace-mode .detail-layout{flex:1;min-height:0;align-items:stretch}.student-workspace-mode .detail-content{max-height:none;height:100%;min-height:0;overflow:auto}.student-workspace-mode .detail-tabs{max-height:100%;overflow:auto}.student-workspace-mode .chat-panel{height:100%;min-height:250px}.student-workspace-mode #notice:not(:empty){padding:6px 12px;margin-bottom:8px;flex-shrink:0}
@media(max-width:760px){.chat-panel>p{display:none}.chat-panel textarea{height:44px;min-height:44px}.chat-panel label{font-size:12px;margin-bottom:5px}.chat-panel button{font-size:12px;padding:5px 10px}.student-workspace-mode .chat-panel{min-height:230px}}
@media(min-width:1000px){.student-workspace-mode>.top{padding-top:10px;padding-bottom:10px}.student-summary .persistent-contacts{grid-template-columns:1fr 1fr 1fr 1.6fr .8fr 1fr 1fr;gap:8px 12px}.student-workspace-mode .chat-panel{min-height:0}}
.chat-panel>p{font-size:12px;margin:2px 0 8px}.chat-panel>h2{margin-bottom:6px}
.requirement-heading{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.requirement-heading h3{margin:0}.requirement-latest{margin:16px 0}.requirement-latest .required-note{line-height:1.9}
/* Compact milestone dots beside the student's name. */
.student-name-line{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.student-name-line h2{margin:0!important}.inline-milestones{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.milestone-dots{display:flex;align-items:center;gap:2px;flex-wrap:wrap}.node-dot{display:inline-flex;align-items:center;justify-content:center;border:0;background:transparent;padding:8px;border-radius:50%;width:32px;height:32px}.node-dot:hover{background:var(--soft)}.node-dot .led{width:13px;height:13px;flex-basis:13px}.inline-milestones .node-add,.inline-milestones .node-hint-toggle{font-size:11px;padding:3px 7px;color:var(--muted);background:transparent}.inline-milestones .node-hint-toggle[aria-pressed=true]{color:var(--accent)}.node-tooltip{position:fixed;z-index:1000;pointer-events:none;width:max-content;max-width:min(300px,calc(100vw - 16px));display:grid;gap:4px;padding:10px 13px;background:var(--text);color:var(--panel);border-radius:9px;box-shadow:0 6px 22px #0003;font-size:12px;line-height:1.6;overflow-wrap:anywhere}.node-tooltip strong{font-size:13px}.student-name-line+.muted{margin-top:4px}.student-summary .detail-title>div{min-width:0}
@media(max-width:760px){.student-name-line{gap:6px}.inline-milestones{gap:4px}.node-dot{width:28px;height:28px;padding:7px}.inline-milestones .node-add,.inline-milestones .node-hint-toggle{font-size:10px;padding:2px 5px}}
.guidance-record-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:10px;flex-wrap:wrap}.guidance-record-actions{display:flex;gap:6px;flex-shrink:0}.guidance-record-actions button{font-size:12px;padding:4px 8px}

.file-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.file-actions button{font-size:12px;padding:5px 9px}.file-preview-dialog{width:min(1100px,94vw);max-width:94vw}.file-preview-dialog .dialog-heading h2{overflow-wrap:anywhere;min-width:0}.file-preview-dialog .dialog-heading button{flex-shrink:0}.file-preview-toolbar{display:flex;gap:18px;margin-bottom:12px}.file-preview-content{height:min(70dvh,800px);overflow:auto;min-height:180px}.file-preview-image{display:block;max-width:100%;height:auto;margin:auto}.file-preview-pdf{display:block;width:100%;height:calc(100% - 50px);min-height:280px;border:1px solid var(--border);background:white}.file-preview-text{white-space:pre-wrap;overflow-wrap:anywhere;padding:14px;background:var(--soft);font-size:13px}.file-preview-content td{min-width:85px;max-width:300px}.file-preview-content .required-note{font-size:12px}@media(max-width:760px){.file-preview-dialog{padding:14px}.file-preview-dialog h2{font-size:16px}.file-preview-content{height:70dvh}}

.image-size-controls{display:flex;gap:10px;align-items:end;flex-wrap:wrap}.image-size-controls label{flex:1;min-width:150px}.image-size-controls button{margin-bottom:14px}.markdown-body img{height:auto;max-width:100%}.node-management-row{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}.node-management-row .toolbar{flex-shrink:0}

.pdf-controls{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.pdf-controls input{width:75px;margin:0}.file-preview-content canvas{display:block;max-width:100%;height:auto;margin:auto;background:white}

.image-library-dialog{width:min(900px,94vw);max-width:94vw}.image-library-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;margin-top:12px}.image-library-item{display:flex;flex-direction:column;gap:7px;padding:10px;min-width:0;text-align:left}.image-library-item img{width:100%;height:110px;object-fit:contain;background:var(--soft)}.image-library-item span{overflow-wrap:anywhere}.image-library-item small{font-size:10px;color:var(--muted)}.image-size-controls{margin-top:14px}.image-size-controls label{min-width:120px}

.requirement-history-row{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:10px;margin:10px 0}.requirement-history-row>details{min-width:0;margin:0}.requirement-history-row>details>summary{overflow-wrap:anywhere}.requirement-history-row>button{font-size:12px;padding:6px 10px;white-space:nowrap}.requirement-history-row>details .markdown-body{overflow-wrap:anywhere}@media(max-width:520px){.requirement-history-row{grid-template-columns:minmax(0,1fr);gap:5px}.requirement-history-row>button{justify-self:start}}

.student-supervision-line{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-top:9px}.student-supervision-line>.muted{font-size:12px}.student-name-line .graduation-topic{overflow-wrap:anywhere;max-width:100%}.student-name-line .topic-edit{font-size:11px;padding:3px 7px;white-space:nowrap}.student-summary .detail-title>div:first-child{flex:1;min-width:0}@media(max-width:760px){.student-supervision-line{gap:12px;margin-top:7px}}

.student-supervision-line{flex-wrap:nowrap;align-items:flex-start}.student-supervision-line>.muted{flex-shrink:0;line-height:32px}.student-supervision-line>.inline-milestones{flex:1;min-width:0}@media(max-width:760px){.student-supervision-line>.muted{line-height:28px}}

/* Small or short screens must scroll the page: the summary must not squeeze tabs to zero height. */
@media (max-width:760px), (max-height:540px){
 body.student-workspace-mode{height:auto;min-height:100dvh;display:block;overflow:visible}
 .student-workspace-mode>main,.student-workspace-mode #app,.student-workspace-mode .student-workspace{display:block}
 .student-workspace-mode .detail-layout{display:block}
 .student-workspace-mode .detail-tabs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;max-height:none;overflow:visible;margin-bottom:16px}
 .student-workspace-mode .detail-tabs button{min-width:0;min-height:44px;text-align:center;padding:8px 4px;white-space:normal;overflow-wrap:anywhere;font-size:13px}
 .student-workspace-mode .detail-content{height:auto;max-height:none;overflow:visible;border-left:0;padding:0;min-width:0}
 .student-workspace-mode .chat-panel{height:auto;min-height:0}
 .student-workspace-mode .chat-panel>.chat-list{flex:none;height:320px;max-height:55dvh;min-height:120px;overflow:auto}
}