:root{--blue:#1b5fa8;--ink:#1a2233;--muted:#49576a;--bg:#f3f6fa;--line:#c9d4e0;--error:#9c2525;--paper:#fff}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 "Microsoft YaHei",system-ui,sans-serif}header{background:var(--blue);color:var(--paper);padding:18px 5%;display:flex;align-items:center;justify-content:space-between}header strong{font-size:22px}header span{margin-left:18px}main{max-width:1340px;margin:24px auto;padding:0 24px}h1{font-size:26px}h2{font-size:21px}h3{font-size:18px}h1,h2,h3{line-height:1.45;margin:0 0 12px}p{margin:8px 0 16px}section,aside{background:var(--paper);padding:24px;border:1px solid var(--line);border-radius:10px;margin-bottom:20px;min-width:0}#login-panel{max-width:500px;margin:28px auto}.notice{border-left:4px solid var(--blue);padding:12px 16px;background:#e8f0fa}.layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:24px}.fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 20px}.page-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;margin:20px 0}label,legend{display:block;font-weight:600;margin:12px 0 6px}input:not([type=checkbox]),select,textarea{display:block;width:100%;border:1px solid #8595aa;border-radius:5px;padding:10px;font:inherit;background:var(--paper);color:var(--ink)}textarea{resize:vertical}button{min-height:44px;border:1px solid var(--blue);background:var(--blue);color:var(--paper);border-radius:5px;padding:9px 16px;font:inherit;cursor:pointer;margin:6px 8px 6px 0}button.secondary{background:var(--paper);color:var(--blue)}button:disabled{opacity:.55;cursor:wait}button:hover:not(:disabled){filter:brightness(.93)}:focus-visible{outline:3px solid #c16f12;outline-offset:3px}fieldset{border:1px solid var(--line);margin:18px 0;padding:10px 16px}.criteria{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.check{display:flex;align-items:flex-start;gap:10px;font-weight:400;margin:12px 0}.check input{width:20px;height:20px;flex-shrink:0;margin-top:4px}#error{padding:12px 16px;border:1px solid var(--error);color:var(--error);background:#fff1f1}#connection,footer{color:var(--muted)}footer{max-width:1340px;margin:20px auto;padding:16px 24px}.item{padding:20px 0;border-bottom:1px solid var(--line)}.item blockquote{margin:12px 0;padding:10px 14px;background:var(--bg);border-left:3px solid var(--blue);white-space:pre-wrap;overflow-wrap:anywhere}.warning{color:var(--error)}pre,.prose{white-space:pre-wrap;overflow-wrap:anywhere;font:inherit}pre{background:var(--bg);padding:16px}.history-button{width:100%;text-align:left;background:var(--paper);color:var(--blue);overflow-wrap:anywhere}.skip{position:absolute;top:-100px;left:20px;background:var(--paper);padding:12px}.skip:focus{top:8px}details{margin:24px 0}summary{cursor:pointer;min-height:44px}[hidden]{display:none!important}@media(max-width:850px){.layout{grid-template-columns:1fr}.fields,.criteria{grid-template-columns:1fr}header span{display:block;margin-left:0}main{padding:0 12px}section,aside{padding:18px}}
:is(#account-panel,#admin-panel){margin-top:20px}#account-panel form{max-width:560px}#workspace-nav{display:flex;align-items:center;flex-wrap:wrap;margin-bottom:20px}#admin-nav{display:contents}.admin-form,.admin-user{padding:20px 0;border-bottom:1px solid var(--line);max-width:760px}#temporary-secret{border:2px solid var(--blue);padding:16px;margin:16px 0}#temporary-secret-value{overflow-wrap:anywhere;user-select:all}.category-row{display:flex;align-items:center;justify-content:space-between;gap:16px;max-width:640px}.category-row span{overflow-wrap:anywhere}#admin-content{overflow-wrap:anywhere}header>div:last-child{display:flex;flex-wrap:wrap}#workspace-nav button{min-width:100px}
@media(max-width:600px){header{flex-direction:column;align-items:flex-start;gap:10px}header strong{white-space:nowrap}header>div:last-child{gap:8px}#temporary-secret-value{white-space:pre-wrap}}
.teacher-layout{display:block;max-width:1050px;margin:auto}.teacher-fields{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}#drop-zone{border:2px dashed #8badce;border-radius:14px;padding:28px;text-align:center;background:#f4f9ff;margin:24px 0}#drop-zone strong{font-size:1.25rem}#drop-zone.dragover,#drop-zone:focus{border-color:#165eaa;background:#e5f0ff}.file-row{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px;border-bottom:1px solid #d9e3ef;overflow-wrap:anywhere}.file-row span{flex:1}.file-row button{min-height:44px;flex-shrink:0}.start-area{margin-top:24px}.start-area>button{font-size:1.1rem;padding:14px 26px}.start-area p,.muted{color:#526579;font-size:.92rem}.quick-actions{padding:12px 0}#recent-history{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}#recent-history button{white-space:normal;text-align:left}#history-panel{width:100%;box-sizing:border-box}#supplementary{margin-top:18px}@media(max-width:650px){.teacher-fields,#recent-history{grid-template-columns:1fr}#drop-zone{padding:18px 10px}.file-row{align-items:flex-start}.start-area>button{width:100%}}

.document-report{color:#20334a}.report-cover{text-align:center;padding:28px 12px;border-bottom:3px solid #1b5fa8;margin-bottom:24px}.report-cover>p:first-child{color:#587087;letter-spacing:2px}.report-cover h2{font-size:29px}.report-cover h3{font-size:22px;color:#174e87}.report-keynote{padding:20px;background:#edf5fc;border-left:4px solid #1b5fa8;margin-bottom:24px}.document-report section{padding:20px 0;border:0;border-radius:0}.document-report h2{color:#174e87}.report-table-wrap{overflow-x:auto}.report-table{border-collapse:collapse;width:100%;font-size:14px;line-height:1.7}.report-table th,.report-table td{border:1px solid #c3d2e1;padding:12px;text-align:left;vertical-align:top;overflow-wrap:anywhere}.report-table thead{background:#eaf1f8}.report-table tbody th{min-width:105px;width:16%;background:#f7f9fc}.report-table td:nth-child(2){min-width:140px}.report-table details{margin:0 0 8px}.report-table summary{min-height:32px}.report-table blockquote{margin:8px 0;padding:8px 12px;background:#f1f5f9;border-left:3px solid #83a5c9}.report-table td:last-child{min-width:240px}
@media print{@page{size:A4;margin:16mm}body{background:white;font-size:11pt}body>header,body>footer,.skip,.notice,#message,#error,.page-heading,#workspace-nav,#login-panel,#input-panel,#history-panel,#account-panel,#admin-panel,#report-notice,#material-details,#dimension-overview,#focus-panel,#evidence-tools,#attempt-create,#improvements,#report-panel>details,#planning-results button,#drafts button{display:none!important}main,.teacher-layout{max-width:none;margin:0;padding:0}#workspace>.page-heading{display:none}#report-panel{border:0;padding:0;margin:0}section{border:0;padding:0}.document-report section{padding:10px 0}.report-table-wrap{overflow:visible}.report-table{font-size:9pt}.report-table th,.report-table td{padding:6px;min-width:0!important}.report-table details>summary{display:none}.report-table details>*{display:block!important}.report-table button{display:none}thead{display:table-header-group}tr,blockquote{break-inside:avoid}.report-cover{padding:8px}.report-keynote{padding:10px}.document-report h2{font-size:15pt}h2,h3{break-after:avoid}#planning-results:empty,#drafts:empty{display:none}}
.radar-section{text-align:center}.radar-section img{display:block;width:min(100%,600px);height:auto;margin:auto}.radar-section p{font-size:14px}.radar-section{break-inside:avoid}.radar-section h2{text-align:left}#rubric-preview:not(:empty){padding:18px;border:2px solid #8baccc;margin:20px 0}#rubric-preview p{white-space:pre-wrap;overflow-wrap:anywhere}@media print{.radar-section img{max-height:110mm;width:auto;max-width:100%}.radar-section p{font-size:9pt;margin:3px 0}}

.teaching-action{padding:16px;margin:12px 0;border:1px solid #cfdeea;background:#f8fbff}.document-report blockquote{border-left:3px solid #93b0cb;margin:10px 0;padding:8px 12px;background:#f2f6fa;white-space:pre-wrap;overflow-wrap:anywhere}@media print{.briefing-button{display:none!important}.teaching-action{break-inside:avoid}}
/* Problem-led research reuses existing report and review controls. */
.research-entry{background:#f4f8fd;border:1px solid #c9d9ed;border-radius:12px;padding:18px;margin:16px 0}
#rq-dimensions{display:flex;flex-wrap:wrap;gap:8px 20px}
#rq-dimensions .check{margin:4px 0}
.research-path{color:#275b80;font-weight:600}
.research-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.research-cards article{min-width:0;background:#f4f8fd;padding:16px;border-radius:10px;border:1px solid #d6e2ef}
.research-cards h3{margin:0 0 8px}
.research-cards p{margin:0;overflow-wrap:anywhere}
#research-workspace{border-top:3px solid #4d89b8;padding-top:12px;margin-bottom:22px}
#research-workspace details{margin:16px 0}
#research-workspace select[multiple]{min-height:120px;width:100%}
.research-comparison{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.research-comparison>div{min-width:0}
.problem-entry{margin:12px 0;padding-bottom:8px;border-bottom:1px solid #d6e2ef}
.problem-entry p{font-size:14px;overflow-wrap:anywhere;margin:4px 0}
#full-report>summary{font-size:18px;font-weight:600;padding:12px 0}
audio{max-width:100%;width:100%}
#admin-content select[multiple],#calibration-submit select[multiple]{width:100%;min-height:120px;max-width:100%}
#admin-content blockquote{white-space:pre-wrap;overflow-wrap:anywhere;border-left:3px solid #93b0cb;padding:8px 12px;margin:8px 0;background:#f2f6fa}
@media(max-width:640px){.research-cards,.research-comparison{grid-template-columns:1fr}.research-entry{padding:12px}}
@media print{#research-editor,#research-workspace>button,#research-workspace>details:not(#research-events){display:none}#full-report{display:block!important}#research-workspace{break-inside:auto}}