.agent-activity{width:clamp(340px,34vw,540px);flex:none;min-height:0;display:flex;flex-direction:column;background:var(--bg-elevated);border-left:2px solid var(--border);position:relative;animation:agent-panel-enter .18s ease-out}.agent-activity-header{display:flex;justify-content:space-between;align-items:center;padding:26px 24px 12px;gap:16px}.agent-activity-header h2{font-size:24px;margin:4px 0 0}.agent-eyebrow{font-size:12px;letter-spacing:.08em;color:var(--text-muted)}.agent-activity-header button{font-size:26px;min-width:40px;min-height:40px;padding:0;line-height:1}.agent-activity-intro{font-size:13px;color:var(--text-muted);padding:0 24px 18px;margin:0;border-bottom:1px solid var(--border)}.agent-task-switcher{display:grid;gap:7px;max-height:174px;overflow:auto;padding:12px 16px;border-bottom:1px solid var(--border);background:var(--bg-subtle)}.agent-task-switcher button{display:flex;align-items:center;gap:10px;width:100%;min-width:0;padding:10px 11px;border:1px solid transparent;border-radius:12px;background:transparent;text-align:left;box-shadow:none}.agent-task-switcher button:hover{background:var(--bg-elevated);border-color:var(--border)}.agent-task-switcher button.is-active{background:var(--bg-elevated);border-color:var(--accent,#1cb0f6);box-shadow:0 2px 10px #0000000b}.agent-task-dot{width:9px;height:9px;flex:none;border-radius:50%;background:var(--accent,#1cb0f6);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent,#1cb0f6) 14%,transparent)}.agent-task-dot.local{background:var(--success-ink,#58a700);box-shadow:0 0 0 4px color-mix(in srgb,var(--success-ink,#58a700) 14%,transparent)}.agent-task-copy{display:grid;min-width:0;gap:3px}.agent-task-copy b,.agent-task-copy small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.agent-task-copy b{font-size:13px;color:var(--text)}.agent-task-copy small{font-size:11px;color:var(--text-muted)}.agent-chat{flex:1;min-height:0;overflow:auto;padding:24px 20px;overscroll-behavior:contain;background:var(--bg-canvas,var(--bg-app))}.agent-chat-empty{padding:40px 12px;text-align:center;color:var(--text-muted)}.agent-message{margin-bottom:22px}.agent-message-meta{display:flex;justify-content:space-between;gap:12px;align-items:center;margin:0 4px 7px;font-size:12px;color:var(--text-muted)}.agent-message-meta b{color:var(--text);font-size:13px}.agent-message-meta time{font-variant-numeric:tabular-nums;white-space:nowrap}.agent-message-bubble{padding:14px 16px;border:1px solid var(--border);border-radius:4px 18px 18px;background:var(--bg-elevated);overflow-wrap:anywhere}.agent-message-bubble p{font-size:14px;line-height:1.7;margin:0;white-space:pre-wrap}.agent-message-bubble small{display:block;color:var(--text-muted);font-size:11px;margin-top:8px}.has-error .agent-message-bubble{background:var(--danger-soft);border-color:var(--danger)}.has-warning .agent-message-bubble{background:var(--warning-soft,var(--bg-subtle))}.agent-working{display:flex;align-items:center;gap:9px;color:var(--text-muted);font-size:13px;padding:6px 4px 18px}.agent-resume{margin:8px 4px 18px;padding:14px 16px;border:1px solid var(--danger);border-radius:14px;background:var(--danger-soft,var(--bg-subtle))}.agent-resume p{margin:0 0 12px;font-size:14px;line-height:1.6}.agent-resume .primary{width:100%}.agent-live-dot{width:7px;height:7px;border-radius:50%;background:var(--accent,#1cb0f6);display:inline-block;flex:none}.agent-live-dot.is-done{background:var(--success-ink,#58a700)}.agent-activity-footer{display:flex;gap:9px;align-items:center;padding:16px 24px;border-top:1px solid var(--border);font-size:12px;color:var(--text-muted)}.agent-new-messages{position:absolute;bottom:66px;left:50%;transform:translate(-50%);white-space:nowrap}.agent-panel-controls{display:flex;justify-content:flex-end;margin:-6px 0 18px}.agent-panel-open .import-screen.page,.agent-panel-open .workshop-screen.page{width:100%;max-width:none;margin:0}.agent-panel-open .stage-import,.agent-panel-open .stage-workshop{padding:28px 24px}.agent-panel-open .pipeline-steps{grid-template-columns:repeat(3,minmax(0,1fr))}.agent-panel-open .import-progress-card{padding:24px}.agent-panel-open .page-header{flex-wrap:wrap}.agent-panel-open .app-toolbar{flex-wrap:wrap;height:auto;min-height:72px}.agent-panel-open .toolbar-actions{flex-wrap:wrap}.workshop-task-actions{display:flex;align-items:center;justify-content:flex-end;gap:9px;flex-wrap:wrap}.agent-activity-footer b{max-width:45%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text);font-weight:700}.agent-activity-footer b:after{content:"·";margin-left:9px;color:var(--text-muted)}.agent-panel-open .teacher-workshop-grid{grid-template-columns:minmax(0,1fr)}.agent-panel-open .teacher-workshop-grid>.workshop-side-column{display:none}.agent-panel-open .workshop-import-row{grid-template-columns:56px minmax(0,1fr)}.agent-panel-open .workshop-import-actions{grid-column:1/-1}@keyframes agent-panel-enter{0%{opacity:0;transform:translate(16px)}to{opacity:1;transform:none}}@media(max-width:900px){.agent-activity{width:min(88vw,440px);position:fixed;right:0;top:0;bottom:0;z-index:90;box-shadow:-12px 0 36px #0002}.agent-panel-open .pipeline-steps{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(prefers-reduced-motion:reduce){.agent-activity{animation:none}}.agent-panel-open .toolbar-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px;flex:1;min-width:0}.agent-panel-open .app-toolbar{padding-block:10px}.agent-thinking{display:flex;align-items:flex-start;gap:12px;margin:0 0 26px;padding:4px 0 18px;border-bottom:1px solid var(--border)}.agent-thinking strong{font-size:15px;font-weight:600}.agent-thinking p{font-size:12px;color:var(--text-muted);margin:7px 0 0;line-height:1.6}.agent-orbit{font-size:25px;line-height:1.2;color:var(--text-muted);animation:agent-breathe 2s ease-in-out infinite}.is-finished .agent-orbit{animation:none;color:var(--success-ink)}.agent-elapsed{margin-left:auto;white-space:nowrap;font-size:11px;color:var(--text-muted);font-variant-numeric:tabular-nums;padding-top:4px}.agent-shimmer{color:var(--text-muted);background:linear-gradient(100deg,var(--text-muted) 20%,var(--text) 45%,var(--text-muted) 70%);background-size:240% 100%;background-clip:text;-webkit-background-clip:text;-webkit-text-fill-color:transparent;animation:agent-shimmer 2.2s linear infinite}.agent-message{animation:agent-message-in .22s cubic-bezier(.23,1,.32,1)}.agent-message-bubble{border:0;border-left:2px solid var(--border);border-radius:0;background:transparent;padding:3px 0 3px 16px}.agent-message-meta{margin-left:18px}.agent-message-bubble p{line-height:1.85}.has-warning .agent-message-bubble,.has-error .agent-message-bubble{padding:12px 16px;border-radius:0 12px 12px 0}.agent-stream-cursor{display:inline-block;width:6px;height:14px;margin-left:4px;vertical-align:-2px;border-radius:3px;background:var(--text);animation:agent-breathe .8s ease-in-out infinite}.agent-typing{display:flex;gap:4px;flex:none}.agent-typing i{width:5px;height:5px;border-radius:50%;background:var(--text-muted);animation:agent-breathe 1.2s ease-in-out infinite}.agent-typing i:nth-child(2){animation-delay:.16s}.agent-typing i:nth-child(3){animation-delay:.32s}.agent-history{margin-bottom:22px}.agent-history-toggle{display:flex;align-items:center;gap:8px;padding:8px 0!important;border:0!important;box-shadow:none!important;background:transparent!important;color:var(--text-muted);font-size:12px}.agent-history-toggle span{font-size:20px;transition:transform .16s cubic-bezier(.23,1,.32,1)}.agent-history-toggle .is-expanded{transform:rotate(90deg)}.agent-history .agent-message{margin-top:16px}.agent-sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}@keyframes agent-shimmer{0%{background-position:100% 0}to{background-position:-140% 0}}@keyframes agent-breathe{0%,to{opacity:.35}50%{opacity:1}}@keyframes agent-message-in{0%{opacity:0;transform:translateY(5px)}to{opacity:1;transform:none}}@media(prefers-reduced-motion:reduce){.agent-message,.agent-orbit,.agent-shimmer,.agent-stream-cursor,.agent-typing i{animation:none}.agent-history-toggle span{transition:none}}.production-shell{--activity-rail-width: 380px;width:100%;min-width:0;overflow:hidden}.workspace-navigation{display:flex;flex:none;min-height:0}.production-shell>.workspace{min-width:0;min-height:0;container-type:inline-size;container-name:workspace}.workspace-activity-host{display:flex;flex:none;width:var(--activity-rail-width);min-height:0}.workspace-activity-host .agent-activity{position:relative;inset:auto;width:100%;min-width:0;box-shadow:none}.workspace-activity-control{padding:8px 18px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;align-items:center;flex:none}.workspace-activity-control button{font-size:12px;min-height:36px}.workspace-build-info{min-width:0;color:var(--text-muted);font-size:11px}.workspace-build-info summary{cursor:pointer}.workspace-build-info p{overflow-wrap:anywhere;max-width:100%}.agent-activity-backdrop{position:fixed;inset:0;z-index:89;background:#101b2d66}.agent-panel-drawer .workspace-activity-host{position:fixed;right:0;top:0;bottom:0;width:min(92vw,420px);z-index:90;box-shadow:-12px 0 36px #0002}.agent-panel-drawer .agent-activity{border-left:1px solid var(--border)}.local-workspace{height:100dvh}.local-workspace>.workspace{padding-bottom:0}.production-budget-card{margin-bottom:18px;padding:20px;border:1px solid var(--border);border-radius:16px;background:var(--bg-elevated);overflow-wrap:anywhere}.production-budget-heading{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px}.production-budget-heading h3{margin:0}.production-budget-heading small,.production-budget-numbers dt{color:var(--text-muted)}.production-budget-form{display:flex;flex-wrap:wrap;align-items:flex-end;gap:12px}.production-budget-form label{flex:1 1 200px;min-width:0;display:grid;gap:8px}.production-budget-form input{width:100%;min-width:0}.production-budget-form button{flex:1 1 180px;white-space:normal}.production-budget-numbers{display:grid;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));gap:12px}.production-budget-numbers dd{margin:4px 0 0;font-variant-numeric:tabular-nums}.local-workshop-toolbar{padding:12px 20px;display:flex;flex-wrap:wrap;gap:8px;border-bottom:1px solid var(--border);flex:none}.local-workshop-toolbar strong{flex:1 0 100%;overflow-wrap:anywhere}.production-shell .stage{min-width:0;max-width:100%}.production-shell .workshop-screen.page{width:100%;min-width:0}.production-shell .teacher-workshop-grid{grid-template-columns:minmax(0,1fr)}.production-shell .teacher-workshop-grid>.workshop-side-column{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr))}.production-shell.agent-panel-open .teacher-workshop-grid>.workshop-side-column{display:none}.workshop-source-panel{container-type:inline-size;container-name:upload-card}.workshop-import-copy{min-width:0;overflow-wrap:break-word}.production-shell .workshop-import-row{grid-template-columns:56px minmax(0,1fr) minmax(180px,240px)}.production-shell .workshop-import-actions{grid-column:auto;min-width:0}@container workspace (min-width: 680px){.production-shell .app-toolbar{flex-wrap:wrap;height:auto;max-height:none;min-height:72px;overflow:visible}.production-shell .toolbar-actions{display:flex;flex:1 1 460px;justify-content:flex-end;gap:8px;flex-wrap:wrap}}.workshop-prep-mode{display:flex;flex-wrap:wrap;gap:8px;padding:16px 22px 0}.workshop-prep-mode p{flex:1 0 100%;margin:0;line-height:1.6;color:var(--text-muted)}@container upload-card (max-width: 679px){.production-shell .workshop-import-row{grid-template-columns:48px minmax(0,1fr);gap:14px}.production-shell .workshop-import-actions{grid-column:1 / -1;width:100%}.workshop-panel-head{flex-wrap:wrap}}@container workspace (max-width: 679px){.production-shell .stage{padding:16px}.production-shell .page-header,.production-shell .page-header-actions{flex-wrap:wrap}.production-shell .pipeline-steps{grid-template-columns:repeat(2,minmax(0,1fr))}.production-shell .student-workshop-grid{grid-template-columns:minmax(0,1fr)}}@container workspace (max-width: 420px){.production-shell .stage{padding:12px}.production-shell .pipeline-steps{grid-template-columns:minmax(0,1fr)}.production-shell .workshop-panel-head,.production-shell .workshop-import-row{padding:18px}}.account-entry{min-height:100dvh;display:grid;place-items:center;padding:32px;background:var(--bg,#eef5fa)}.account-card{width:min(460px,100%);padding:36px;border:1px solid var(--border,#cbd8e2);border-radius:24px;background:var(--surface,#fff);box-shadow:0 16px 50px #20364d15}.account-eyebrow{font-size:12px;font-weight:900;letter-spacing:.14em;color:#3286c5}.account-card h1{font-size:26px;margin:16px 0}.account-card p,.account-dialog p{line-height:1.7}.account-card form,.account-dialog form{display:grid;gap:14px;margin:22px 0}.account-card label,.account-dialog label{display:grid;gap:8px;font-weight:700;font-size:14px}.account-card input,.account-dialog input,.account-dialog select{min-width:0;width:100%;padding:11px 13px;border:1px solid var(--border,#cbd8e2);border-radius:10px;background:var(--surface,#fff);color:inherit;font:inherit}.account-muted{font-size:13px;opacity:.7}.account-error{color:#ba2636;background:#fbe7e9;border-radius:10px;padding:12px}.account-notice{color:#226048;background:#e4f4eb;border-radius:10px;padding:12px}.account-dialog{width:min(900px,calc(100vw - 40px));max-height:86dvh;overflow:auto;border:1px solid var(--border,#cbd8e2);border-radius:22px;padding:28px;background:var(--surface,#fff);color:var(--text,#26394b)}.account-dialog::backdrop{background:#0e203570;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}.account-dialog header{display:flex;justify-content:space-between;gap:20px;align-items:center}.account-dialog h2{margin:0;font-size:23px}.account-dialog h3{margin:16px 0 8px}.account-dialog section{border-top:1px solid var(--border,#cbd8e2);margin-top:24px;padding-top:16px}.account-row{display:flex!important;flex-wrap:wrap;gap:12px;align-items:end}.account-row label{flex:1}.account-user-list article{display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:16px 0;border-bottom:1px solid var(--border,#cbd8e2)}.account-user-list select{width:auto}.account-user-list strong{min-width:100px}.account-user-list span{font-size:13px;opacity:.7}.account-pool-list article{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:18px 0;border-bottom:1px solid var(--border,#cbd8e2)}.account-pool-list article button{flex-shrink:0}.account-pool-list h3{font-size:16px;margin:0}.account-pool-list p{margin:6px 0;font-size:13px;opacity:.7}[data-theme=dark] .account-card,[data-theme=dark] .account-dialog{background:#172536;color:#dce7f3;border-color:#34465b}[data-theme=dark] .account-entry{background:#101b29}[data-theme=dark] .account-card input,[data-theme=dark] .account-dialog input,[data-theme=dark] .account-dialog select{background:#223247;border-color:#40516b;color:#e8f0f8}@media(max-width:640px){.account-card{padding:24px}.account-dialog{padding:20px}.account-pool-list article{align-items:start;flex-direction:column;gap:10px}.toolbar-actions{flex-wrap:wrap}}.example-course{border:2px solid #d7a222!important;background:linear-gradient(120deg,#fff8df,#fffdf5)!important;box-shadow:0 4px #dfc67b!important}.example-badge{display:inline-block;padding:3px 9px;margin:0 8px 5px 0;border-radius:8px;background:#f6d36c;color:#624300;font-size:12px;font-weight:800}.open-lesson{border:1px solid #d7a222;border-radius:16px;padding:16px;margin:12px 0}.open-lesson summary{cursor:pointer;font-weight:700}.open-lesson nav{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}.open-lesson-check{border-top:1px solid var(--border);padding:14px 0}[data-theme=dark] .example-course{background:linear-gradient(120deg,#3b3019,#29271d)!important}.textbook-record{margin:16px 0;overflow-wrap:anywhere}.textbook-record-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.textbook-record-head h3{margin:0 0 8px}.textbook-job-view{flex:none!important;min-width:148px!important;max-width:none!important;white-space:nowrap!important;font-weight:800!important}.textbook-job{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;border-top:1px solid var(--border);margin-top:12px;padding-top:8px}.textbook-job-main{min-width:0;flex:1}.textbook-job progress{width:min(80%,400px);accent-color:var(--accent)}.account-nav-button{display:inline-flex!important;align-items:center;gap:8px;border:1px solid var(--border)!important;border-radius:12px!important;background:var(--bg-elevated)!important;padding:10px 14px!important;min-height:42px;box-shadow:0 2px 0 var(--border)!important;color:var(--text)!important;cursor:pointer;font-size:14px!important;white-space:nowrap}.account-nav-button:focus-visible,.execution-choice:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.account-nav-button:active{transform:translateY(1px)}.execution-choice{display:flex;justify-content:space-between;width:100%;padding:15px!important;border:1px solid var(--border)!important;border-radius:12px!important;background:var(--bg-subtle)!important;cursor:pointer}.execution-options{padding:18px;margin:12px 0;border:1px solid var(--border);border-radius:16px}.execution-options button[aria-pressed=true]{background:var(--accent)!important;color:#fff!important}@media(hover:hover){.account-nav-button:hover{background:var(--bg-subtle)!important;border-color:var(--accent)!important}}.account-dialog{padding:0!important;overflow:hidden;max-height:min(88dvh,960px)}.account-dialog[open]{display:flex;flex-direction:column}.account-dialog>header{flex:none;padding:20px 24px;min-height:84px;border-bottom:1px solid var(--border);background:var(--bg-elevated);position:relative;z-index:2}.account-dialog>header h2{min-width:0;overflow-wrap:anywhere;line-height:1.4}.account-dialog>header button{flex:none;min-width:72px;min-height:44px;padding:10px 18px;white-space:nowrap}.account-dialog-body{overflow-y:auto;min-height:0;padding:24px;overscroll-behavior:contain;scrollbar-gutter:stable}.account-dialog-body>section:first-child{margin-top:0;padding-top:0;border-top:0}.account-dialog-body p{margin:12px 0 18px}.account-dialog-body button,.account-card button{min-height:44px;padding:10px 18px;line-height:1.4;max-width:100%;white-space:normal;overflow-wrap:anywhere}.account-dialog-body .account-row{gap:14px;margin:16px 0}.account-dialog-body .account-row label{min-width:min(220px,100%)}.account-dialog-body .account-notice{padding:16px 18px;margin:18px 0}.account-notice button{margin-top:12px}.account-notice input+button{margin-top:12px}.account-dialog-body section{margin-top:28px;padding-top:24px}.account-dialog-body label{line-height:1.5}.account-dialog-body .textbook-record{width:100%;padding:24px;box-shadow:none;margin:20px 0}.textbook-record h3{margin-top:0}.textbook-job progress{width:calc(100% - 64px);vertical-align:middle}.textbook-job>span{display:inline-block;min-width:48px;text-align:right;font-variant-numeric:tabular-nums}.account-dialog-body .account-pool-list article{gap:18px}.account-dialog-body .account-pool-list article>div{min-width:0}.account-dialog-body a{overflow-wrap:anywhere}@media(max-width:640px){.account-dialog{width:calc(100vw - 24px);max-height:92dvh}.account-dialog>header{padding:16px;gap:12px}.account-dialog>header h2{font-size:20px}.account-dialog-body,.account-dialog-body .textbook-record{padding:18px}.account-dialog-body .account-row{align-items:stretch}.account-dialog-body .account-row>button{flex:1 0 auto}.textbook-record-head,.textbook-job{flex-wrap:wrap}.textbook-job-view{width:100%}}.account-dialog{position:fixed;inset:0;margin:auto!important}.workshop-return{margin-left:auto!important;flex:none;min-width:80px}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(./KaTeX_AMS-Regular-BQhdFMY1.woff2) format("woff2"),url(./KaTeX_AMS-Regular-DMm9YOAa.woff) format("woff"),url(./KaTeX_AMS-Regular-DRggAlZN.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(./KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2) format("woff2"),url(./KaTeX_Caligraphic-Bold-BEiXGLvX.woff) format("woff"),url(./KaTeX_Caligraphic-Bold-ATXxdsX0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(./KaTeX_Caligraphic-Regular-Di6jR-x-.woff2) format("woff2"),url(./KaTeX_Caligraphic-Regular-CTRA-rTL.woff) format("woff"),url(./KaTeX_Caligraphic-Regular-wX97UBjC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(./KaTeX_Fraktur-Bold-CL6g_b3V.woff2) format("woff2"),url(./KaTeX_Fraktur-Bold-BsDP51OF.woff) format("woff"),url(./KaTeX_Fraktur-Bold-BdnERNNW.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(./KaTeX_Fraktur-Regular-CTYiF6lA.woff2) format("woff2"),url(./KaTeX_Fraktur-Regular-Dxdc4cR9.woff) format("woff"),url(./KaTeX_Fraktur-Regular-CB_wures.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(./KaTeX_Main-Bold-Cx986IdX.woff2) format("woff2"),url(./KaTeX_Main-Bold-Jm3AIy58.woff) format("woff"),url(./KaTeX_Main-Bold-waoOVXN0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(./KaTeX_Main-BoldItalic-DxDJ3AOS.woff2) format("woff2"),url(./KaTeX_Main-BoldItalic-SpSLRI95.woff) format("woff"),url(./KaTeX_Main-BoldItalic-DzxPMmG6.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(./KaTeX_Main-Italic-NWA7e6Wa.woff2) format("woff2"),url(./KaTeX_Main-Italic-BMLOBm91.woff) format("woff"),url(./KaTeX_Main-Italic-3WenGoN9.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(./KaTeX_Main-Regular-B22Nviop.woff2) format("woff2"),url(./KaTeX_Main-Regular-Dr94JaBh.woff) format("woff"),url(./KaTeX_Main-Regular-ypZvNtVU.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(./KaTeX_Math-BoldItalic-CZnvNsCZ.woff2) format("woff2"),url(./KaTeX_Math-BoldItalic-iY-2wyZ7.woff) format("woff"),url(./KaTeX_Math-BoldItalic-B3XSjfu4.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(./KaTeX_Math-Italic-t53AETM-.woff2) format("woff2"),url(./KaTeX_Math-Italic-DA0__PXp.woff) format("woff"),url(./KaTeX_Math-Italic-flOr_0UB.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(./KaTeX_SansSerif-Bold-D1sUS0GD.woff2) format("woff2"),url(./KaTeX_SansSerif-Bold-DbIhKOiC.woff) format("woff"),url(./KaTeX_SansSerif-Bold-CFMepnvq.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(./KaTeX_SansSerif-Italic-C3H0VqGB.woff2) format("woff2"),url(./KaTeX_SansSerif-Italic-DN2j7dab.woff) format("woff"),url(./KaTeX_SansSerif-Italic-YYjJ1zSn.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(./KaTeX_SansSerif-Regular-DDBCnlJ7.woff2) format("woff2"),url(./KaTeX_SansSerif-Regular-CS6fqUqJ.woff) format("woff"),url(./KaTeX_SansSerif-Regular-BNo7hRIc.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(./KaTeX_Script-Regular-D3wIWfF6.woff2) format("woff2"),url(./KaTeX_Script-Regular-D5yQViql.woff) format("woff"),url(./KaTeX_Script-Regular-C5JkGWo-.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(./KaTeX_Size1-Regular-mCD8mA8B.woff2) format("woff2"),url(./KaTeX_Size1-Regular-C195tn64.woff) format("woff"),url(./KaTeX_Size1-Regular-Dbsnue_I.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(./KaTeX_Size2-Regular-Dy4dx90m.woff2) format("woff2"),url(./KaTeX_Size2-Regular-oD1tc_U0.woff) format("woff"),url(./KaTeX_Size2-Regular-B7gKUWhC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(data:font/woff2;base64,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) format("woff2"),url(./KaTeX_Size3-Regular-CTq5MqoE.woff) format("woff"),url(./KaTeX_Size3-Regular-DgpXs0kz.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(./KaTeX_Size4-Regular-Dl5lxZxV.woff2) format("woff2"),url(./KaTeX_Size4-Regular-BF-4gkZK.woff) format("woff"),url(./KaTeX_Size4-Regular-DWFBv043.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(./KaTeX_Typewriter-Regular-CO6r4hn1.woff2) format("woff2"),url(./KaTeX_Typewriter-Regular-C0xS9mPB.woff) format("woff"),url(./KaTeX_Typewriter-Regular-D3Ib7_Hf.ttf) format("truetype")}.katex{font: 1.21em KaTeX_Main,Times New Roman,serif;line-height:1.2;position:relative;text-indent:0;text-rendering:auto}.katex *{-ms-high-contrast-adjust:none!important;border-color:currentColor}.katex .katex-version:after{content:"0.17.0"}.katex .katex-mathml{border:0;-webkit-clip-path:inset(50%);clip-path:inset(50%);height:1px;overflow:hidden;padding:0;position:absolute;width:1px}.katex .katex-html>.newline{display:block}.katex .base{position:relative;white-space:nowrap;width:-webkit-min-content;width:-moz-min-content;width:min-content}.katex .base,.katex .strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;display:inline-table;table-layout:fixed}.katex .vlist-r{display:table-row}.katex .vlist{display:table-cell;position:relative;vertical-align:bottom}.katex .vlist>span{display:block;height:0;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{overflow:hidden;width:0}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{display:table-cell;font-size:1px;min-width:2px;vertical-align:bottom;width:2px}.katex .vbox{align-items:baseline;display:inline-flex;flex-direction:column}.katex .hbox{width:100%}.katex .hbox,.katex .thinbox{display:inline-flex;flex-direction:row}.katex .thinbox{max-width:0;width:0}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .hdashline,.katex .hline,.katex .mfrac .frac-line,.katex .overline .overline-line,.katex .rule,.katex .underline .underline-line{min-height:1px}.katex .mspace{display:inline-block}.katex .smash{display:inline;line-height:0}.katex .clap,.katex .llap,.katex .rlap{position:relative;width:0}.katex .clap>.inner,.katex .llap>.inner,.katex .rlap>.inner{position:absolute}.katex .clap>.fix,.katex .llap>.fix,.katex .rlap>.fix{display:inline-block}.katex .llap>.inner{right:0}.katex .clap>.inner,.katex .rlap>.inner{left:0}.katex .clap>.inner>span{margin-left:-50%;margin-right:50%}.katex .rule{border:0 solid;display:inline-block;position:relative}.katex .hline,.katex .overline .overline-line,.katex .underline .underline-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .hdashline{border-bottom-style:dashed;display:inline-block;width:100%}.katex .sqrt>.root{margin-left:.2777777778em;margin-right:-.5555555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .sizing.reset-size2.size1{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .sizing.reset-size2.size3{font-size:1.1666666667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .sizing.reset-size2.size4{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .sizing.reset-size2.size6{font-size:1.6666666667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .sizing.reset-size2.size10{font-size:3.4566666667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .sizing.reset-size2.size11{font-size:4.1466666667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .sizing.reset-size3.size1{font-size:.7142857143em}.katex .fontsize-ensurer.reset-size3.size2,.katex .sizing.reset-size3.size2{font-size:.8571428571em}.katex .fontsize-ensurer.reset-size3.size3,.katex .sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .sizing.reset-size3.size4{font-size:1.1428571429em}.katex .fontsize-ensurer.reset-size3.size5,.katex .sizing.reset-size3.size5{font-size:1.2857142857em}.katex .fontsize-ensurer.reset-size3.size6,.katex .sizing.reset-size3.size6{font-size:1.4285714286em}.katex .fontsize-ensurer.reset-size3.size7,.katex .sizing.reset-size3.size7{font-size:1.7142857143em}.katex .fontsize-ensurer.reset-size3.size8,.katex .sizing.reset-size3.size8{font-size:2.0571428571em}.katex .fontsize-ensurer.reset-size3.size9,.katex .sizing.reset-size3.size9{font-size:2.4685714286em}.katex .fontsize-ensurer.reset-size3.size10,.katex .sizing.reset-size3.size10{font-size:2.9628571429em}.katex .fontsize-ensurer.reset-size3.size11,.katex .sizing.reset-size3.size11{font-size:3.5542857143em}.katex .fontsize-ensurer.reset-size4.size1,.katex .sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .sizing.reset-size5.size1{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .sizing.reset-size5.size2{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .sizing.reset-size5.size3{font-size:.7777777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .sizing.reset-size5.size4{font-size:.8888888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .sizing.reset-size5.size6{font-size:1.1111111111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .sizing.reset-size5.size7{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .sizing.reset-size5.size10{font-size:2.3044444444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .sizing.reset-size5.size11{font-size:2.7644444444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .sizing.reset-size7.size1{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .sizing.reset-size7.size3{font-size:.5833333333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .sizing.reset-size7.size4{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .sizing.reset-size7.size6{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .sizing.reset-size7.size10{font-size:1.7283333333em}.katex .fontsize-ensurer.reset-size7.size11,.katex .sizing.reset-size7.size11{font-size:2.0733333333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .sizing.reset-size8.size1{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .sizing.reset-size8.size2{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .sizing.reset-size8.size3{font-size:.4861111111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .sizing.reset-size8.size4{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .sizing.reset-size8.size6{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .sizing.reset-size8.size7{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .sizing.reset-size8.size10{font-size:1.4402777778em}.katex .fontsize-ensurer.reset-size8.size11,.katex .sizing.reset-size8.size11{font-size:1.7277777778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .sizing.reset-size9.size1{font-size:.2893518519em}.katex .fontsize-ensurer.reset-size9.size2,.katex .sizing.reset-size9.size2{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .sizing.reset-size9.size3{font-size:.4050925926em}.katex .fontsize-ensurer.reset-size9.size4,.katex .sizing.reset-size9.size4{font-size:.462962963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .sizing.reset-size9.size5{font-size:.5208333333em}.katex .fontsize-ensurer.reset-size9.size6,.katex .sizing.reset-size9.size6{font-size:.5787037037em}.katex .fontsize-ensurer.reset-size9.size7,.katex .sizing.reset-size9.size7{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .sizing.reset-size9.size8{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .sizing.reset-size9.size10{font-size:1.2002314815em}.katex .fontsize-ensurer.reset-size9.size11,.katex .sizing.reset-size9.size11{font-size:1.4398148148em}.katex .fontsize-ensurer.reset-size10.size1,.katex .sizing.reset-size10.size1{font-size:.2410800386em}.katex .fontsize-ensurer.reset-size10.size2,.katex .sizing.reset-size10.size2{font-size:.2892960463em}.katex .fontsize-ensurer.reset-size10.size3,.katex .sizing.reset-size10.size3{font-size:.337512054em}.katex .fontsize-ensurer.reset-size10.size4,.katex .sizing.reset-size10.size4{font-size:.3857280617em}.katex .fontsize-ensurer.reset-size10.size5,.katex .sizing.reset-size10.size5{font-size:.4339440694em}.katex .fontsize-ensurer.reset-size10.size6,.katex .sizing.reset-size10.size6{font-size:.4821600771em}.katex .fontsize-ensurer.reset-size10.size7,.katex .sizing.reset-size10.size7{font-size:.5785920926em}.katex .fontsize-ensurer.reset-size10.size8,.katex .sizing.reset-size10.size8{font-size:.6943105111em}.katex .fontsize-ensurer.reset-size10.size9,.katex .sizing.reset-size10.size9{font-size:.8331726133em}.katex .fontsize-ensurer.reset-size10.size10,.katex .sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .sizing.reset-size10.size11{font-size:1.1996142719em}.katex .fontsize-ensurer.reset-size11.size1,.katex .sizing.reset-size11.size1{font-size:.2009646302em}.katex .fontsize-ensurer.reset-size11.size2,.katex .sizing.reset-size11.size2{font-size:.2411575563em}.katex .fontsize-ensurer.reset-size11.size3,.katex .sizing.reset-size11.size3{font-size:.2813504823em}.katex .fontsize-ensurer.reset-size11.size4,.katex .sizing.reset-size11.size4{font-size:.3215434084em}.katex .fontsize-ensurer.reset-size11.size5,.katex .sizing.reset-size11.size5{font-size:.3617363344em}.katex .fontsize-ensurer.reset-size11.size6,.katex .sizing.reset-size11.size6{font-size:.4019292605em}.katex .fontsize-ensurer.reset-size11.size7,.katex .sizing.reset-size11.size7{font-size:.4823151125em}.katex .fontsize-ensurer.reset-size11.size8,.katex .sizing.reset-size11.size8{font-size:.578778135em}.katex .fontsize-ensurer.reset-size11.size9,.katex .sizing.reset-size11.size9{font-size:.6945337621em}.katex .fontsize-ensurer.reset-size11.size10,.katex .sizing.reset-size11.size10{font-size:.8336012862em}.katex .fontsize-ensurer.reset-size11.size11,.katex .sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{display:inline-block;width:.12em}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .accent .accent-body{position:relative}.katex .accent .accent-body:not(.accent-full){width:0}.katex .overlay{display:block}.katex .mtable .vertical-separator{display:inline-block;min-width:1px}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;display:block;height:inherit;position:absolute;width:100%}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;max-height:none;max-width:none;min-height:0;min-width:0}.katex .stretchy{display:block;overflow:hidden;position:relative;width:100%}.katex .stretchy:after,.katex .stretchy:before{content:""}.katex .hide-tail{overflow:hidden;position:relative;width:100%}.katex .halfarrow-left{left:0;overflow:hidden;position:absolute;width:50.2%}.katex .halfarrow-right{overflow:hidden;position:absolute;right:0;width:50.2%}.katex .brace-left{left:0;overflow:hidden;position:absolute;width:25.1%}.katex .brace-center{left:25%;overflow:hidden;position:absolute;width:50%}.katex .brace-right{overflow:hidden;position:absolute;right:0;width:25.1%}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{border:.04em solid;box-sizing:border-box}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{border-right:.049em solid;border-top:.049em solid;box-sizing:border-box;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{display:inline-block;position:absolute;right:calc(50% + .3em);text-align:left}.katex .cd-label-right{display:inline-block;left:calc(50% + .3em);position:absolute;text-align:right}.katex-display{display:block;margin:1em 0;text-align:center}.katex-display>.katex{display:block;text-align:center;white-space:nowrap}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.tag{left:0;right:auto}.katex-display.fleqn>.katex{padding-left:2em;text-align:left}body{counter-reset:katexEqnNo mmlEqnNo}.md{line-height:1.85;overflow-wrap:anywhere}.md h1{font-size:1.6em}.md h2{font-size:1.35em}.md h3{font-size:1.15em}.md h4,.md h5,.md h6{font-size:1.03em}.md h1,.md h2,.md h3,.md h4,.md h5,.md h6{font-weight:750;line-height:1.45;margin:1.4em 0 .65em;color:var(--text);letter-spacing:0}.md>:first-child{margin-top:0}.md strong{font-weight:750;color:var(--text)}.md p{margin:0 0 .9em}.md ul,.md ol{padding-left:1.5em;margin:.7em 0 1em}.md li{margin:.4em 0}.md blockquote{margin:1em 0;padding:.5em 1em;border-left:3px solid var(--accent);background:var(--bg-subtle);color:var(--text-muted)}.md pre{overflow:auto;max-width:100%;padding:14px;border-radius:10px;background:var(--bg-subtle)}.md .katex-display{max-width:100%;overflow-x:auto;overflow-y:hidden;margin:.9em 0;padding:.4em .1em;overscroll-behavior-x:contain}.md .katex-display>.katex{white-space:normal}.md .katex{font-size:1.05em}.md .formula-error{display:inline-block;color:#a61b1b;background:#fff1f1;border:1px solid #d66;border-radius:4px;padding:0 .25em;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;white-space:pre-wrap}.md .formula-error:before{content:"公式渲染失败：";font-family:inherit;font-weight:700}.md table{display:block;overflow-x:auto;border-collapse:collapse}.md th,.md td{border:1px solid var(--border);padding:.5em .75em;text-align:left}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:700;src:url(./nunito-cyrillic-ext-700-normal-BuR0mlCG.woff2) format("woff2"),url(./nunito-cyrillic-ext-700-normal-DfoqN4Gs.woff) format("woff");unicode-range:U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:700;src:url(./nunito-cyrillic-700-normal-DP36NgGt.woff2) format("woff2"),url(./nunito-cyrillic-700-normal-DfHRUDv-.woff) format("woff");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:700;src:url(./nunito-vietnamese-700-normal-Ch8EUCfz.woff2) format("woff2"),url(./nunito-vietnamese-700-normal-C9SQsXvj.woff) format("woff");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:700;src:url(./nunito-latin-ext-700-normal-BWeMsAzO.woff2) format("woff2"),url(./nunito-latin-ext-700-normal-D4woHhbd.woff) format("woff");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:700;src:url(./nunito-latin-700-normal-Dort48En.woff2) format("woff2"),url(./nunito-latin-700-normal-OcDqTBcA.woff) format("woff");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:800;src:url(./nunito-cyrillic-ext-800-normal-B-cvGohL.woff2) format("woff2"),url(./nunito-cyrillic-ext-800-normal-pjRatrRO.woff) format("woff");unicode-range:U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:800;src:url(./nunito-cyrillic-800-normal-D3igD7Kl.woff2) format("woff2"),url(./nunito-cyrillic-800-normal-DymMgApb.woff) format("woff");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:800;src:url(./nunito-vietnamese-800-normal-D_CZYdm9.woff2) format("woff2"),url(./nunito-vietnamese-800-normal-Dz0hZPb5.woff) format("woff");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:800;src:url(./nunito-latin-ext-800-normal-CtU8tJOV.woff2) format("woff2"),url(./nunito-latin-ext-800-normal-CDcxIxx8.woff) format("woff");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:800;src:url(./nunito-latin-800-normal-Dz8SOQK_.woff2) format("woff2"),url(./nunito-latin-800-normal-D-J0wlBY.woff) format("woff");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:900;src:url(./nunito-cyrillic-ext-900-normal-BLeVovcl.woff2) format("woff2"),url(./nunito-cyrillic-ext-900-normal-DKFql_-q.woff) format("woff");unicode-range:U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:900;src:url(./nunito-cyrillic-900-normal-CWPcV0_V.woff2) format("woff2"),url(./nunito-cyrillic-900-normal-Dr1fjxoU.woff) format("woff");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:900;src:url(./nunito-vietnamese-900-normal-D6LWQAy_.woff2) format("woff2"),url(./nunito-vietnamese-900-normal-WV2-fBew.woff) format("woff");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:900;src:url(./nunito-latin-ext-900-normal-Dllsvgjo.woff2) format("woff2"),url(./nunito-latin-ext-900-normal-CTBZd6bf.woff) format("woff");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:900;src:url(./nunito-latin-900-normal-BVB1fGs6.woff2) format("woff2"),url(./nunito-latin-900-normal-CVn49sIn.woff) format("woff");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}*{box-sizing:border-box;margin:0;padding:0}html,body,#app{height:100%}body{font-family:var(--font-body, "PingFang SC", "Noto Sans SC", "Hiragino Sans GB", sans-serif);background:var(--bg-app);color:var(--text-strong);-webkit-font-smoothing:antialiased}.shell{display:flex;height:100%}.navrail{width:88px;flex:none;display:flex;flex-direction:column;align-items:center;gap:6px;padding:16px 10px 10px;background:var(--bg-elevated);border-right:2px solid var(--border)}.brand{font-size:26px;margin-bottom:12px}.nav-item{width:60px;padding:8px 0;border:0;border-radius:12px;background:transparent;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:2px;color:var(--text-muted);font-size:11px;font-weight:700}.nav-item:hover{background:var(--accent-soft);color:#1cb0f6}.nav-item.active{background:var(--accent-soft);color:#1cb0f6;font-weight:800}.nav-icon{font-size:18px}.stage{flex:1;overflow:auto;padding:32px 40px}.placeholder{color:var(--text-muted);padding:48px 0;text-align:center}.library h1{font-size:26px;font-weight:800}.tagline{color:var(--text-muted);margin:6px 0 24px}.health{padding:12px 16px;border-radius:12px;background:var(--bg-subtle);display:inline-block}.health.ok{background:var(--success-soft);color:var(--success-ink)}.health.err{background:var(--danger-soft);color:var(--danger)}.health-detail{font-size:12px;opacity:.7;margin-top:4px}.new-course{display:flex;gap:10px;margin-bottom:20px}.new-course input[type=text]{flex:0 0 260px;padding:10px 14px;border:2px solid var(--border);border-radius:10px;background:var(--bg-elevated);font-size:14px;font-family:inherit;font-weight:600}button{font-family:inherit}.new-course button,.actions button,.primary,.mini{padding:10px 18px;border:2px solid var(--border);border-radius:10px;background:var(--bg-elevated);cursor:pointer;font-size:14px;font-weight:700;box-shadow:0 4px 0 var(--border-strong)}.primary{background:#1cb0f6;border-color:#1cb0f6;color:#fff;font-weight:800;box-shadow:0 4px #0090cc}.primary:hover{background:color-mix(in srgb,#1cb0f6 85%,#fff);border-color:#1cb0f6}.primary:active{transform:translateY(3px);box-shadow:0 1px #0090cc}.primary:disabled{opacity:.5;cursor:default}.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}.course-card{text-align:left;padding:18px;border:2px solid var(--border);border-radius:16px;background:var(--bg-elevated);cursor:pointer;box-shadow:0 4px 0 var(--border);transition:transform .15s ease,box-shadow .15s ease}.course-card:hover{border-color:#1cb0f6;transform:translateY(-2px);box-shadow:0 6px 0 var(--border-strong)}.course-title{font-size:16px;font-weight:800;color:var(--text-strong)}.course-status{font-size:12px;color:var(--text-muted);margin:4px 0 10px}.course-progress{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-muted)}.bar{flex:1;height:8px;border-radius:9999px;background:var(--bg-subtle);overflow:hidden}.bar .fill{height:100%;background:#1cb0f6;transition:width .4s var(--ease-out, ease)}.bar.big{height:12px;border-radius:9999px;max-width:520px;margin:18px 0 10px}.stage-msg{color:var(--text-muted)}.stage-detail{color:var(--text-faint);font-size:13px}.actions{margin-top:22px;display:flex;flex-direction:column;gap:12px;align-items:flex-start}.review-head .primary{margin-top:10px}.review-quality-error{display:flex;flex-direction:column;gap:4px;max-width:760px;margin-top:12px;padding:11px 13px;border:2px solid #f0c050;border-radius:10px;background:var(--warning-soft);color:var(--warning-ink);font-size:13px}.review-quality-error small{color:#9a7a20}.review-chapter{margin-bottom:22px}.review-chapter h3{margin-bottom:8px;font-size:15px;font-weight:800}.concept-row{background:var(--bg-elevated);border:2px solid var(--border);border-radius:12px;padding:10px 14px;margin-bottom:8px}.concept-row.deleted{opacity:.45}.concept-main{display:flex;gap:10px;align-items:baseline;cursor:pointer;flex-wrap:wrap}.concept-name{font-weight:800;color:var(--text-strong)}.concept-oneline{color:var(--text-muted);font-size:13px}.warn-chip{font-size:11px;background:var(--warning-soft);color:var(--warning-ink);border-radius:6px;padding:2px 8px;font-weight:700}.concept-row .mini{margin-top:8px;font-size:12px;padding:4px 10px}.concept-detail{margin-top:10px;font-size:13px;color:var(--text)}.concept-detail blockquote{border-left:3px solid var(--border);margin:8px 0;padding:4px 10px;color:var(--text-muted)}.concept-detail blockquote.low-conf{border-left-color:#f0c050;background:var(--warning-soft)}.map-layout{display:flex;height:100%;gap:0}.map-tree{width:220px;flex:none;overflow-y:auto;padding:12px 14px;background:var(--bg-canvas);border-right:2px solid var(--border)}.map-tree h3{font-size:14px;margin-bottom:10px;font-weight:800}.tree-chapter{margin-bottom:14px}.tree-ch-title{font-size:12px;color:var(--text-muted);margin-bottom:4px;font-weight:700}.tree-node{display:flex;align-items:center;gap:6px;width:100%;padding:5px 8px;border:0;background:transparent;font-size:12px;cursor:pointer;text-align:left;border-radius:0 8px 8px 0;font-weight:600;box-shadow:none}.tree-node:hover{background:var(--accent-soft);color:#0090cc}.tree-node:disabled{cursor:default;opacity:.5}.tree-node:disabled:hover{background:transparent;color:inherit}.tree-dot{width:8px;height:8px;border-radius:4px;flex:none}.tree-name{flex:1}.tree-status{font-size:10px;color:var(--text-faint)}.map-main{flex:1;display:flex;flex-direction:column;padding:12px 20px 0}.map-legend{display:flex;gap:16px;margin-bottom:10px;flex-wrap:wrap}.legend-item{font-size:12px;color:var(--text-muted);display:inline-flex;align-items:center;gap:5px}.legend-item i{width:12px;height:12px;border-radius:3px;display:inline-block}.map-scroll{flex:1;overflow:auto;background:var(--bg-canvas);border:2px solid var(--border);border-radius:14px}.map-tooltip{position:fixed;z-index:100;max-width:260px;pointer-events:none;background:var(--bg-elevated);border:2px solid var(--border);border-radius:10px;padding:8px 12px;box-shadow:0 4px 16px #0f28461f;font-size:12px;line-height:1.5}.tooltip-meta{color:var(--text-muted);margin-top:4px}.node-name{font-size:13px;font-weight:800;fill:var(--text-strong)}.node-ch{font-size:10px;fill:var(--text-faint)}.node-one{fill:var(--text-faint)}.study-screen{height:100%;display:flex;flex-direction:column;max-width:780px}.study-head{flex:none;padding-bottom:12px;border-bottom:2px solid var(--border)}.focus-card{display:flex;align-items:baseline;gap:12px;margin-bottom:10px}.focus-name{font-size:20px;font-weight:800;color:var(--text-strong)}.focus-sub{font-size:12px;color:var(--text-muted)}.knowledge-contract{margin-top:10px;padding:9px 12px;border:2px solid var(--border);border-radius:10px;background:var(--accent-soft);color:var(--text);font-size:12px;line-height:1.55}.contract-baseline b{margin-left:4px;color:#0090cc}.contract-terms{margin-top:5px}.contract-terms summary{cursor:pointer;color:#1cb0f6;font-weight:700}.contract-terms dl{margin-top:6px;display:grid;gap:5px}.contract-terms dl div{display:grid;grid-template-columns:minmax(70px,auto) 1fr;gap:8px}.contract-terms dt{font-weight:800;color:#0090cc}.steps{display:flex;gap:6px}.step{flex:1;display:flex;align-items:center;gap:6px;padding:8px 10px;border-radius:10px;background:var(--bg-subtle);color:var(--text-muted);font-size:12px;font-weight:700}.step.done{background:var(--success-soft);color:var(--success-ink)}.step.active{background:#1cb0f6;color:#fff;font-weight:800;box-shadow:0 3px #0090cc}.step-num{width:20px;height:20px;border-radius:10px;background:#00000014;display:inline-flex;align-items:center;justify-content:center;font-size:11px;flex:none}.step-label{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat{flex:1;overflow-y:auto;padding:18px 4px;display:flex;flex-direction:column;gap:12px}.chat-empty{color:var(--text-muted);padding:30px 0}.bubble{max-width:92%;padding:12px 16px;border-radius:16px;line-height:1.65}.bubble.tutor{background:var(--bg-elevated);border:2px solid var(--border);align-self:flex-start}.bubble.user{background:var(--accent-soft);border:2px solid var(--border-strong);align-self:flex-end}.bubble.streaming{border-color:#50c8ff}.bubble .md p{margin:0 0 8px}.bubble .md p:last-child{margin-bottom:0}.bubble .md ul,.bubble .md ol{margin:0 0 8px 20px}.bubble .md blockquote{border-left:3px solid var(--border);padding-left:10px;color:var(--text-muted);margin:8px 0}.bubble .md code{background:var(--bg-subtle);border-radius:6px;padding:1px 5px;font-size:.9em}.action-bar{flex:none;padding-top:12px;border-top:2px solid var(--border);display:flex;flex-direction:column;gap:10px}.ask-row{display:flex;gap:8px}.ask-row input{flex:1;padding:10px 14px;border:2px solid var(--border);border-radius:12px;background:var(--bg-elevated);font-size:14px;font-family:inherit;font-weight:600}.ask-row input:focus{outline:none;border-color:#1cb0f6;box-shadow:0 0 0 3px #1cb0f633}.ask-row button{padding:10px 18px;border:2px solid var(--border);border-radius:12px;background:var(--bg-elevated);cursor:pointer;font-weight:700;box-shadow:0 4px 0 var(--border-strong)}.btn-row{display:flex;gap:8px;flex-wrap:wrap}.btn-row button{padding:10px 18px;border:2px solid var(--border);border-radius:10px;background:var(--bg-elevated);cursor:pointer;font-size:14px;font-weight:700;box-shadow:0 4px 0 var(--border-strong)}.btn-row .primary{background:#1cb0f6;border-color:#1cb0f6;color:#fff;font-weight:800;box-shadow:0 4px #0090cc}.btn-row .warn{background:var(--warning-soft);border-color:#f0d060;color:var(--warning-ink)}.grade-chip{align-self:flex-start;display:flex;gap:7px;align-items:flex-start;flex-direction:column;padding:8px 14px;border-radius:10px;font-size:13px;font-weight:700}.grade-chip.pass{background:var(--success-soft);color:var(--success-ink)}.grade-chip.partial{background:var(--warning-soft);color:var(--warning-ink)}.grade-chip.fail{background:var(--danger-soft);color:var(--danger)}.grade-by{font-size:11px;opacity:.6}.grade-feedback{padding-top:3px;border-top:1px solid currentColor;width:100%}.term-input{flex:0 0 130px!important}.progress-screen h2{margin:22px 0 10px;font-size:17px;font-weight:800}.progress-screen h2:first-child{margin-top:0}.chapter-progress{margin-bottom:14px}.chapter-line{display:flex;justify-content:space-between;font-size:14px;margin-bottom:4px;font-weight:700}.concept-dots{display:flex;gap:12px;flex-wrap:wrap;margin-top:6px;font-size:12px;color:var(--text)}.wrong-row{display:flex;gap:10px;align-items:baseline;background:var(--bg-elevated);border:2px solid var(--border);border-radius:10px;padding:8px 12px;margin-bottom:6px;font-size:13px}.wrong-row.cleared{opacity:.5}.wrong-prompt{flex:1;color:var(--text-muted)}.wrong-count{color:var(--danger);font-weight:700}.queue-row{display:flex;gap:10px;align-items:baseline;padding:6px 0;font-size:13px}.queue-status{color:var(--text-muted);flex:1}.sprint-screen h2{margin-bottom:18px;font-size:20px;font-weight:800}.sprint-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px;margin-bottom:20px}.sprint-card{background:var(--bg-elevated);border:2px solid var(--border);border-radius:16px;padding:20px;box-shadow:0 4px 0 var(--border)}.sprint-card h3{margin-bottom:4px;font-weight:800}.sprint-card p{font-size:13px;color:var(--text-muted);margin-bottom:14px}.sprint-msg{padding:10px 14px;border-radius:10px;background:var(--accent-soft);margin-bottom:14px;color:#0090cc;font-weight:700}.export-output{border:2px solid var(--border);border-radius:12px;background:var(--bg-elevated);overflow:hidden}.export-head{padding:8px 12px;background:var(--bg-subtle);border-bottom:2px solid var(--border);font-weight:700}.export-output pre{margin:0;padding:16px;font-size:12px;max-height:500px;overflow:auto;white-space:pre-wrap}:root{color-scheme:light;--font-display: "Nunito", "PingFang SC", "Noto Sans SC", "Hiragino Sans GB", sans-serif;--font-body: "PingFang SC", "Noto Sans SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;font:100%/1.5 var(--font-body);--bg-app: #f0f4f8;--bg-canvas: #f7fafc;--bg-elevated:#ffffff;--bg-subtle: #e8f3fb;--bg-hover: #ddeef9;--text-strong:#1a2535;--text: #2d3f52;--text-muted: #5a7185;--text-faint: #8aa3b8;--border: #cde0ef;--border-strong:#a8c8e2;--accent: #1cb0f6;--accent-hover:#0090cc;--accent-soft: #d4f1ff;--action: #0077a8;--action-hover:#00638f;--info-ink: #00638f;--success-ink: #08752d;--warning-ink: #805600;--purple-ink: #6e3a87;--info: #1cb0f6;--info-soft: #d4f1ff;--warning: #e09a00;--warning-soft:#fff3cc;--danger: #e53935;--danger-soft:#fce8e8;--success: #18a847;--success-soft:#d4f5e2;--purple: #9b59b6;--purple-soft:#f0e6f9;--status-locked: #9db8cc;--status-ready: #1cb0f6;--status-verifying:#9b59b6;--status-active: #e09a00;--status-repair: #e05a2d;--status-mastered: #18a847;--status-review: #e53935;--shadow-card: 0 1px 2px rgba(15, 40, 70, .06), 0 4px 0 #cde0ef;--shadow-float: 0 14px 40px rgba(15, 40, 70, .14);--shadow-btn-primary: 0 4px 0 #0090cc;--shadow-btn-default: 0 4px 0 #a8c8e2;--radius-sm: 10px;--radius-md: 14px;--radius-lg: 18px;--radius-xl: 24px;--radius-pill: 9999px;--ease-out: cubic-bezier(.23, 1, .32, 1);--ease-in-out: cubic-bezier(.77, 0, .175, 1);--ease-spring: cubic-bezier(.34, 1.56, .64, 1);--motion-fast: .15s;--motion-base: .28s;--nav-width: 88px;--toolbar-height: 54px}.review-full-screen.review-screen.page{width:min(980px,100%)}.review-full-summary{margin:-4px 0 18px;padding:16px 18px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:13px 20px;align-items:center;border:2px solid var(--border);border-radius:var(--radius-lg);background:var(--bg-elevated);box-shadow:0 4px 0 var(--border)}.review-full-summary-copy{min-width:0;display:flex;align-items:center;gap:11px}.review-full-summary-copy>div{min-width:0;display:flex;flex-direction:column;gap:2px}.review-full-summary-copy b{color:var(--text-strong);font-family:var(--font-display);font-size:15px;font-weight:900}.review-full-summary-copy small{color:var(--text-muted);font-size:12px}.review-full-summary-icon{width:42px;height:42px;flex:0 0 42px;display:grid;place-items:center;border-radius:12px;background:var(--accent-soft);color:var(--accent-deep)}.review-full-summary-stats{display:flex;align-items:stretch;gap:8px}.review-full-summary-stats>span{min-width:70px;padding:7px 10px;display:flex;flex-direction:column;align-items:center;border:1px solid var(--border);border-radius:11px;background:var(--bg-canvas)}.review-full-summary-stats b{color:var(--accent-deep);font-family:var(--font-display);font-size:18px;line-height:1.15}.review-full-summary-stats small{color:var(--text-muted);font-size:10px}.review-full-extension-note{grid-column:1 / -1;margin:0;padding-top:10px;display:flex;align-items:center;gap:7px;border-top:1px solid var(--border);color:#6e4b80;font-size:12px}.review-full-reopen{width:fit-content;min-height:30px;margin-top:6px;padding:4px 10px;border-color:currentColor;background:transparent;color:currentColor;box-shadow:none;font-size:11px}.review-full-ready-chip{padding:3px 7px;display:inline-flex;align-items:center;gap:3px;border:1px solid color-mix(in srgb,var(--success) 25%,var(--border));border-radius:999px;background:var(--success-soft);color:var(--success-deep);font-size:10px;font-weight:800}.review-full-detail{grid-column:1 / -1;min-width:0;border-top:2px solid var(--border);background:var(--bg-canvas)}.review-full-tabs{padding:10px 12px 0;display:flex;gap:6px;border-bottom:1px solid var(--border);background:var(--bg-elevated)}.review-full-tab{min-height:36px;padding:7px 11px 9px;border:0;border-bottom:3px solid transparent;border-radius:9px 9px 0 0;background:transparent;box-shadow:none;color:var(--text-muted);font-size:12px}.review-full-tab:hover:not(:disabled){border-color:transparent;border-bottom-color:var(--border-strong);background:var(--bg-hover);color:var(--text-strong)}.review-full-tab.active{border-bottom-color:var(--accent);background:var(--accent-soft);color:var(--accent-deep)}.review-full-source{padding:15px;display:grid;gap:11px}.review-full-source-section{padding:13px 14px;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--bg-elevated)}.review-full-source-section h3{margin:0 0 6px;color:var(--text-strong);font-family:var(--font-display);font-size:12px;font-weight:900}.review-full-source-section p{margin:0;color:var(--text);font-size:12px;line-height:1.7}.review-full-source-quote{margin:8px 0 0;padding:10px 12px;border:0;border-left:3px solid var(--accent);border-radius:0 9px 9px 0;background:var(--bg-canvas);color:var(--text);font-size:12px;line-height:1.7}.review-full-source-quote>span{margin:0 8px 3px 0;padding:2px 6px;display:inline-flex;border-radius:999px;background:var(--accent-soft);color:var(--accent-deep);font-size:10px;font-weight:800}.review-full-source-quote.low{border-left-color:var(--warning);background:var(--warning-soft)}.review-full-source-quote.low>span{background:var(--bg-elevated);color:var(--warning)}.review-full-empty-copy{color:var(--warning)!important}.draft-editor-list{padding:15px;display:grid;gap:12px}.draft-card-editor,.draft-check-editor{overflow:hidden;border:2px solid var(--border);border-radius:var(--radius-md);background:var(--bg-elevated);box-shadow:0 3px 0 var(--border)}.draft-editor-head{min-height:54px;padding:10px 12px;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--border);background:var(--bg-subtle)}.draft-step-number,.draft-check-number{width:30px;height:30px;flex:0 0 30px;display:grid;place-items:center;border-radius:9px;background:var(--accent);color:#fff;font-family:var(--font-display);font-size:13px;font-weight:900}.draft-check-number{background:var(--purple)}.draft-editor-title{min-width:0;flex:1;display:flex;flex-direction:column;gap:1px}.draft-editor-title b{color:var(--text-strong);font-family:var(--font-display);font-size:13px;font-weight:900}.draft-editor-title small{color:var(--text-muted);font-size:10px}.draft-extension-badge{padding:3px 7px;display:inline-flex;align-items:center;gap:4px;border:1px solid color-mix(in srgb,var(--purple) 28%,var(--border));border-radius:999px;background:var(--purple-soft);color:#6e4b80;font-size:10px;font-weight:800;white-space:nowrap}.draft-extension-field{margin-top:2px;padding-top:12px;border-top:1px dashed color-mix(in srgb,var(--purple) 28%,var(--border))}.draft-extension-field>span{display:flex;align-items:center;flex-wrap:wrap;gap:6px}.draft-extension-field>span>small{color:var(--text-muted);font-size:10px;font-weight:600;line-height:1.45}.draft-extension-field textarea{border-color:color-mix(in srgb,var(--purple) 30%,var(--border));background:color-mix(in srgb,var(--purple-soft) 52%,var(--bg-canvas))}.draft-field{padding:11px 12px 0;display:grid;gap:5px}.draft-field>span{color:var(--text-strong);font-size:11px;font-weight:800}.draft-field textarea{width:100%;min-height:72px;padding:9px 10px;resize:vertical;border:2px solid var(--border);border-radius:10px;background:var(--bg-canvas);color:var(--text);font-size:12px;line-height:1.65}.draft-field textarea:focus{border-color:var(--accent);background:var(--bg-elevated)}.draft-field-warning{margin:7px 12px 0;color:var(--danger);font-size:11px}.draft-editor-actions{min-height:49px;padding:8px 12px 10px;display:flex;align-items:center;justify-content:space-between;gap:10px}.draft-editor-actions button{min-height:32px;padding:5px 10px;box-shadow:0 3px 0 var(--border-strong);font-size:11px}.draft-save-status{display:inline-flex;align-items:center;gap:4px;color:var(--text-muted);font-size:11px}.draft-save-status.dirty,.draft-save-status.saving{color:var(--warning);font-weight:800}.draft-save-status.saved{color:var(--success-deep);font-weight:800}.draft-save-status.error{color:var(--danger);font-weight:800}.draft-options{margin:9px 12px 0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}.draft-options>span{padding:7px 9px;border:1px solid var(--border);border-radius:9px;background:var(--bg-canvas);color:var(--text);font-size:11px}.draft-answer-grid{display:grid;grid-template-columns:minmax(180px,.7fr) minmax(0,1.3fr);gap:0}.draft-empty-state{min-height:150px;padding:28px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;border:2px dashed var(--border-strong);border-radius:var(--radius-md);background:var(--bg-elevated);color:var(--warning);text-align:center}.draft-empty-state b{color:var(--text-strong);font-family:var(--font-display);font-size:13px}.draft-empty-state span{color:var(--text-muted);font-size:11px}@media(max-width:760px){.review-full-summary{grid-template-columns:1fr}.review-full-summary-stats{width:100%}.review-full-summary-stats>span{min-width:0;flex:1}.review-full-tabs{overflow-x:auto}.review-full-tab{flex:0 0 auto}.draft-answer-grid,.draft-options{grid-template-columns:1fr}.draft-editor-head{align-items:flex-start}.draft-editor-actions{align-items:stretch;flex-direction:column}.draft-editor-actions button{width:100%}}.app-mode-switch{display:inline-flex;align-items:center;gap:2px;padding:3px;border:1px solid var(--border);border-radius:11px;background:var(--bg-app)}.app-mode-switch button{min-height:30px;padding:4px 10px;border:0;border-radius:8px;background:transparent;color:var(--text-muted);box-shadow:none;font-size:12px}.app-mode-switch button:hover:not(:disabled){background:var(--bg-hover);border-color:transparent}.app-mode-switch button.active{background:var(--bg-elevated);color:var(--text-strong);box-shadow:0 1px 4px #0f28461f}.stage-workshop{overflow-y:auto}.workshop-screen.page{width:min(1240px,calc(100% - 48px));max-width:none;padding-bottom:72px}.teacher-workshop-grid{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:18px;align-items:start}.workshop-main-column,.workshop-side-column{display:grid;gap:18px;min-width:0}.workshop-panel,.student-prep-card,.student-ready-card,.student-library-notice{overflow:hidden;background:var(--bg-elevated);border:2px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-card)}.workshop-panel-head{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:16px 18px;border-bottom:1px solid var(--border)}.workshop-panel-head h2{margin:0;font-family:var(--font-display);font-size:18px}.workshop-panel-head p{margin:2px 0 0;color:var(--text-muted);font-size:12px}.workshop-badge{display:inline-flex;align-items:center;gap:5px;min-height:26px;padding:3px 9px;border:1px solid currentColor;border-radius:var(--radius-pill);font-size:12px;font-weight:750;white-space:nowrap}.workshop-badge.info{color:var(--info-ink);background:var(--accent-soft)}.workshop-badge.success{color:var(--success-ink);background:var(--success-soft)}.workshop-badge.warning{color:var(--warning-ink);background:var(--warning-soft)}.workshop-prep-mode{display:grid;gap:10px;margin:0 18px 8px}.workshop-prep-mode p{margin:0;font-size:13px;color:var(--text-muted)}.workshop-import-row{display:grid;grid-template-columns:56px minmax(0,1fr) minmax(250px,330px);gap:15px;align-items:center;padding:18px}.workshop-file-icon{width:54px;height:60px;display:grid;place-items:center;color:var(--accent-hover);background:var(--accent-soft);border:2px solid color-mix(in srgb,var(--accent) 48%,var(--border));border-radius:13px;box-shadow:0 3px color-mix(in srgb,var(--accent) 30%,var(--border))}.workshop-import-copy b,.workshop-import-copy small{display:block}.workshop-import-copy b{color:var(--text-strong);font-family:var(--font-display);font-size:16px}.workshop-import-copy small{margin-top:4px;color:var(--text-muted)}.workshop-import-actions{display:grid;gap:9px}.workshop-import-actions input{width:100%;min-height:40px;padding:8px 11px;border:2px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-canvas);color:var(--text-strong)}.workshop-agents{display:flex;flex-wrap:wrap;align-items:stretch;gap:10px;padding:18px}.workshop-agent-wrap{min-width:0;flex:1 1 320px;display:flex;align-items:center;gap:10px}.local-agent-connection-test{grid-column:1 / -1;display:flex;flex-direction:column;gap:10px;min-width:0}.local-agent-connection-test button{min-height:44px;padding:10px 18px;align-self:flex-start}.local-agent-connection-test small{line-height:1.6;overflow-wrap:anywhere;color:var(--text-muted)}.workshop-agent{min-width:0;flex:1;display:grid;grid-template-columns:36px minmax(0,1fr) 8px;gap:10px;align-items:center;padding:13px;background:var(--bg-canvas);border:1px solid var(--border);border-radius:var(--radius-md)}.workshop-agent-icon{width:36px;height:36px;display:grid;place-items:center;color:#fff;background:var(--text-strong);border-radius:10px}.workshop-agent.codex .workshop-agent-icon{background:var(--success-ink)}.workshop-agent-copy,.workshop-agent-copy div{min-width:0}.workshop-agent-copy div{display:flex;align-items:baseline;gap:8px}.workshop-agent-copy b{color:var(--text-strong);font-family:var(--font-display)}.workshop-agent-copy span{color:var(--purple-ink);font-size:11px;font-weight:750}.workshop-agent-copy small{display:block;overflow:hidden;margin-top:3px;color:var(--text-muted);font-size:11px;text-overflow:ellipsis;white-space:nowrap}.workshop-handoff{width:30px;height:30px;flex:0 0 30px;display:grid;place-items:center;color:var(--purple);background:var(--purple-soft);border:1px dashed var(--purple);border-radius:50%}.agent-status-dot{width:8px;height:8px;border-radius:50%;background:var(--text-faint)}.agent-status-dot.ready{background:var(--success);box-shadow:0 0 0 3px var(--success-soft)}.workshop-safety-note{display:flex;align-items:flex-start;gap:8px;padding:12px 18px;color:#634273;background:var(--purple-soft);border-top:1px solid color-mix(in srgb,var(--purple) 25%,var(--border));font-size:12px}.workshop-inline-error{margin:0 18px 16px;padding:10px 12px;color:var(--danger);background:var(--danger-soft);border:1px solid color-mix(in srgb,var(--danger) 35%,var(--border));border-radius:10px;font-size:12px}.workshop-muted{margin:0;color:var(--text-muted)}.workshop-pipeline{list-style:none;margin:0;padding:6px 18px 14px}.workshop-pipeline li{position:relative;display:grid;grid-template-columns:34px minmax(0,1fr) auto;gap:12px;align-items:start;padding:13px 0}.workshop-pipeline li:not(:last-child):after{content:"";position:absolute;left:16px;top:47px;bottom:-5px;width:2px;background:var(--border)}.workshop-step-icon{position:relative;z-index:1;width:34px;height:34px;display:grid;place-items:center;color:var(--text-faint);background:var(--bg-elevated);border:2px solid var(--border);border-radius:50%}.workshop-pipeline li.done .workshop-step-icon{color:#fff;background:var(--success-ink);border-color:var(--success-ink)}.workshop-pipeline li.active .workshop-step-icon{color:#fff;background:var(--action);border-color:var(--action)}.workshop-pipeline li.active .workshop-step-icon svg{animation:spin 1.1s linear infinite}.workshop-pipeline li b,.workshop-pipeline li small,.workshop-pipeline li em{display:block}.workshop-pipeline li b{font-family:var(--font-display)}.workshop-pipeline li small{margin-top:2px;color:var(--text-muted)}.workshop-pipeline li em{margin-top:4px;color:var(--text-faint);font-size:11px;font-style:normal}.workshop-pipeline li>span:last-child{align-self:center;color:var(--text-muted);font-size:12px;font-weight:700}.workshop-panel-action{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:15px 18px;background:color-mix(in srgb,var(--bg-canvas) 76%,#fff);border-top:1px solid var(--border)}.workshop-panel-action p{margin:0;color:var(--text-muted);font-size:12px}.workshop-progress-body{padding:18px}.workshop-progress-body>div:first-child{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:10px}.workshop-progress-body strong{font:900 29px var(--font-display)}.workshop-progress-body span,.workshop-progress-body p{color:var(--text-muted);font-size:12px}.workshop-progress-body p{margin:11px 0 0}.workshop-principles{list-style:none;margin:0;padding:8px 18px 16px}.workshop-run-ledger{display:grid;gap:10px;margin:0;padding:0;list-style:none}.workshop-run-ledger li{display:grid;grid-template-columns:10px minmax(0,1fr);align-items:start;gap:9px;padding:10px 0;border-bottom:1px solid var(--border-soft)}.workshop-run-ledger li:last-child{border-bottom:0}.workshop-run-ledger .agent-status-dot{margin-top:5px}.workshop-run-ledger div,.workshop-run-ledger b,.workshop-run-ledger small{display:block}.workshop-run-ledger b{color:var(--text);font-size:13px}.workshop-run-ledger small{margin-top:2px;color:var(--text-secondary);font-size:12px;line-height:1.45}.workshop-principles li{display:flex;align-items:flex-start;gap:9px;padding:10px 0;color:var(--success);border-bottom:1px solid color-mix(in srgb,var(--border) 62%,transparent)}.workshop-principles li:last-child{border:0}.workshop-principles b,.workshop-principles small{display:block}.workshop-principles b{color:var(--text-strong);font-size:13px}.workshop-principles small{margin-top:2px;color:var(--text-muted);font-size:11px}.workshop-library-link{width:100%}.student-workshop-grid{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:20px;align-items:stretch}.student-prep-card{padding:26px}.student-prep-card h2{margin:16px 0 0;font:850 25px var(--font-display)}.student-prep-card>p{max-width:680px;margin:8px 0 0;color:var(--text-muted);font-size:15px}.student-prep-rail{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:28px}.student-prep-rail>div{min-width:0;text-align:center}.student-prep-rail span{display:block;height:8px;border-radius:var(--radius-pill);background:var(--border)}.student-prep-rail span.done{background:var(--success)}.student-prep-rail span.active{background:var(--accent)}.student-prep-rail small{display:block;overflow:hidden;margin-top:8px;color:var(--text-muted);font-size:11px;text-overflow:ellipsis;white-space:nowrap}.extension-note{display:flex;align-items:flex-start;gap:11px;margin-top:22px;padding:14px 15px;background:var(--bg-canvas);border:1px solid var(--border);border-radius:var(--radius-md)}.extension-note>span{width:31px;height:31px;flex:0 0 31px;display:grid;place-items:center;color:var(--warning);background:var(--warning-soft);border-radius:9px}.extension-note b,.extension-note small{display:block}.extension-note small{color:var(--text-muted)}.student-ready-card{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:26px;text-align:center;background:var(--accent-soft);border-color:color-mix(in srgb,var(--accent) 44%,var(--border))}.student-book-icon{width:76px;height:88px;display:grid;place-items:center;color:#fff;background:var(--accent);border-radius:14px 8px 8px 14px;box-shadow:-6px 0 0 var(--accent-hover),0 6px color-mix(in srgb,var(--accent) 35%,var(--border))}.student-ready-card h2{margin:22px 0 0;font:850 19px var(--font-display)}.student-ready-card p{margin:7px 0 16px;color:var(--text-muted)}.student-ready-card button{width:100%}.student-library-notice{display:flex;align-items:center;gap:15px;margin-bottom:28px;padding:18px}.student-library-notice>span{width:44px;height:44px;flex:0 0 44px;display:grid;place-items:center;color:var(--accent-hover);background:var(--accent-soft);border-radius:12px}.student-library-notice div{min-width:0;flex:1}.student-library-notice h2{margin:0;font:800 16px var(--font-display)}.student-library-notice p{margin:3px 0 0;color:var(--text-muted)}@media(max-width:1080px){.teacher-workshop-grid,.student-workshop-grid{grid-template-columns:1fr}.workshop-side-column{grid-template-columns:repeat(2,minmax(0,1fr))}.workshop-library-link{align-self:stretch}}@media(max-width:780px){.workshop-screen.page{width:min(100% - 28px,1240px)}.workshop-import-row{grid-template-columns:50px minmax(0,1fr)}.workshop-import-actions{grid-column:1 / -1}.workshop-agents{flex-direction:column}.workshop-agent-wrap{flex:none}.workshop-handoff{transform:rotate(90deg)}.workshop-side-column{grid-template-columns:1fr}.workshop-panel-action,.student-library-notice{align-items:stretch;flex-direction:column}}@media(max-width:620px){.app-mode-switch button{min-width:44px;min-height:44px;padding-inline:8px}.toolbar-help span{display:none}.workshop-pipeline li{grid-template-columns:32px minmax(0,1fr)}.workshop-pipeline li>span:last-child{grid-column:2;justify-self:start}.student-prep-rail{grid-template-columns:repeat(2,1fr)}}@media(prefers-reduced-motion:reduce){.workshop-pipeline li.active .workshop-step-icon svg{animation:none}}html,body,#app{background:var(--bg-app)}body{background:var(--bg-app);color:var(--text-strong);font-family:inherit;line-height:1.5}button,input,textarea{font:inherit}button{min-height:40px;border:2px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-elevated);color:var(--text);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:8px 14px;font-weight:700;box-shadow:var(--shadow-btn-default);transition:transform var(--motion-fast) var(--ease-out),background-color .14s ease,border-color .14s ease,color .14s ease,box-shadow .14s ease}button:hover:not(:disabled){background:var(--bg-subtle);border-color:var(--border-strong)}button:active:not(:disabled){transform:translateY(3px);box-shadow:0 1px 0 var(--border-strong)}button:disabled{cursor:not-allowed;opacity:.48}button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid color-mix(in srgb,var(--info) 34%,transparent);outline-offset:2px}.primary,.new-course .primary,.actions .primary,.btn-row .primary{background:var(--action);border-color:var(--action);color:#fff;font-weight:800;letter-spacing:.02em;box-shadow:0 4px 0 var(--action-hover)}.primary:hover:not(:disabled){background:color-mix(in srgb,var(--action) 91%,#fff);border-color:var(--action);color:#fff}.primary:active:not(:disabled){transform:translateY(3px);box-shadow:0 1px 0 var(--action-hover)}.shell{background:var(--bg-app);display:flex;height:100%;overflow:hidden}.workspace{min-width:0;flex:1;display:flex;flex-direction:column;background:var(--bg-canvas)}.navrail{width:var(--nav-width);padding:12px 10px;gap:5px;background:color-mix(in srgb,var(--bg-app) 88%,transparent);border-right:1px solid var(--border);-webkit-backdrop-filter:blur(22px) saturate(135%);backdrop-filter:blur(22px) saturate(135%)}.brand{width:66px;min-height:54px;margin:0 0 10px;padding:5px 0;flex-direction:column;gap:2px;background:transparent;border:0;color:var(--text-strong);font-size:11px;font-weight:700;letter-spacing:.02em}.brand-mark{width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;color:#fff;background:var(--accent);border-radius:10px;box-shadow:0 4px 0 var(--accent-hover),0 0 0 3px var(--accent-soft)}.nav-item{width:66px;min-height:54px;padding:6px 4px;border:1px solid transparent;border-radius:10px;background:transparent;color:var(--text-muted);font-size:11px;gap:3px}.nav-item:hover{background:var(--bg-hover);color:var(--text)}.nav-item.active{background:var(--bg-elevated);color:var(--accent);border-color:var(--border);box-shadow:0 2px 8px #0f28460d;font-weight:650}.nav-spacer{flex:1}.nav-icon{height:21px;display:inline-flex;align-items:center}.app-toolbar{min-height:var(--toolbar-height);flex:none;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 28px;border-bottom:1px solid color-mix(in srgb,var(--border) 72%,transparent);background:color-mix(in srgb,var(--bg-canvas) 86%,transparent);-webkit-backdrop-filter:blur(22px) saturate(140%);backdrop-filter:blur(22px) saturate(140%);z-index:20}.toolbar-location,.course-context,.toolbar-library{display:flex;align-items:center}.toolbar-location{flex:1 1 auto;min-width:0;overflow:hidden;gap:9px;font-size:13px}.toolbar-screen{color:var(--text-muted);font-weight:600}.toolbar-separator{color:var(--border-strong)}.course-context{min-width:0;max-width:100%;min-height:32px;padding:3px 7px;border:0;background:transparent;color:var(--text-strong);font-weight:650;overflow:hidden}.course-context>span:first-child{max-width:min(300px,32vw);overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.toolbar-library{min-height:32px;background:transparent;border-color:transparent;color:var(--text-muted);font-size:12px}.toolbar-library:hover{background:var(--bg-hover);color:var(--text)}.stage{min-width:0;min-height:0;flex:1;overflow:auto;padding:30px 36px 44px}.stage-map{padding:0;overflow:hidden}.stage-study{padding-bottom:20px;overflow:hidden}.site-footer{min-height:34px;flex:none;display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:3px 10px;padding:7px 18px;border-top:1px solid color-mix(in srgb,var(--border) 72%,transparent);background:color-mix(in srgb,var(--bg-canvas) 92%,transparent);color:var(--text-faint);font-size:11px;line-height:1.35}.site-footer a{color:inherit;text-decoration:none;transition:color .15s ease}.site-footer a:hover{color:var(--text-muted)}.page{width:min(1120px,100%);margin:0 auto}.page-header{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;margin-bottom:24px}.page-header-copy{min-width:0}.eyebrow{margin-bottom:5px;color:var(--accent);font-size:11px;line-height:1.3;font-weight:750;letter-spacing:.09em;text-transform:uppercase}.page-header h1{margin:0;color:var(--text-strong);font-size:clamp(24px,2.4vw,34px);line-height:1.15;letter-spacing:-.025em}.page-header p{max-width:680px;margin-top:8px;color:var(--text-muted);font-size:14px;line-height:1.65}.page-header-actions{flex:none;display:flex;gap:8px}.status-badge{display:inline-flex;align-items:center;min-height:22px;padding:2px 8px;border:1px solid transparent;border-radius:999px;background:var(--bg-subtle);color:var(--text-muted);font-size:11px;line-height:1.3;font-weight:650;white-space:nowrap}.status-badge.info{background:var(--info-soft);color:var(--info)}.status-badge.success{background:var(--success-soft);color:var(--success)}.status-badge.warning{background:var(--warning-soft);color:var(--warning)}.status-badge.danger{background:var(--danger-soft);color:var(--danger)}.status-badge.accent{background:var(--accent-soft);color:var(--accent)}.stage-settings{background:var(--bg-canvas)}.settings-page{max-width:1180px}.diagnostic-health{margin-bottom:14px;padding:18px 20px;display:grid;grid-template-columns:42px minmax(260px,1fr) auto;align-items:center;gap:15px;border:1px solid color-mix(in srgb,var(--success) 24%,var(--border));border-radius:var(--radius-lg);background:color-mix(in srgb,var(--success-soft) 66%,var(--bg-elevated));box-shadow:var(--shadow-card)}.diagnostic-health.attention{border-color:color-mix(in srgb,var(--danger) 25%,var(--border));background:color-mix(in srgb,var(--danger-soft) 64%,var(--bg-elevated))}.diagnostic-health.running{border-color:color-mix(in srgb,var(--info) 25%,var(--border));background:color-mix(in srgb,var(--info-soft) 64%,var(--bg-elevated))}.diagnostic-health-icon{width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;color:var(--success);background:color-mix(in srgb,var(--success) 11%,var(--bg-elevated))}.diagnostic-health.attention .diagnostic-health-icon{color:var(--danger);background:color-mix(in srgb,var(--danger) 11%,var(--bg-elevated))}.diagnostic-health.running .diagnostic-health-icon{color:var(--info);background:color-mix(in srgb,var(--info) 11%,var(--bg-elevated))}.diagnostic-health-copy h2{margin:0;color:var(--text-strong);font-size:17px;letter-spacing:-.012em}.diagnostic-health-copy p{margin:4px 0 0;color:var(--text-muted);font-size:12px}.diagnostic-health-metrics{margin:0;display:grid;grid-template-columns:repeat(3,minmax(90px,auto));border-left:1px solid color-mix(in srgb,var(--border) 75%,transparent)}.diagnostic-health-metrics>div{min-width:92px;padding:1px 17px}.diagnostic-health-metrics dt{color:var(--text-muted);font-size:10px}.diagnostic-health-metrics dd{margin:2px 0 0;color:var(--text-strong);font-size:18px;line-height:1.1;font-weight:720;font-variant-numeric:tabular-nums}.diagnostic-nav{margin-bottom:14px;padding:4px;display:inline-flex;gap:3px;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--bg-subtle)}.diagnostic-nav button{min-height:34px;padding:6px 12px;gap:7px;border-color:transparent;color:var(--text-muted);background:transparent;box-shadow:none;font-size:12px}.diagnostic-nav button:hover{color:var(--text-strong);background:color-mix(in srgb,var(--bg-elevated) 72%,transparent)}.diagnostic-nav button.active{color:var(--text-strong);border-color:var(--border);background:var(--bg-elevated);box-shadow:0 2px 8px #0f28460d}.diagnostic-nav-count{min-width:18px;height:18px;padding:0 5px;display:inline-flex;align-items:center;justify-content:center;border-radius:9px;background:var(--danger-soft);color:var(--danger);font-size:10px}.diagnostic-view{animation:fade-in .16s ease both}.diagnostic-current{margin-bottom:14px;padding:14px 16px;display:flex;align-items:center;gap:12px;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--bg-elevated)}.diagnostic-current-icon{width:34px;height:34px;flex:none;display:inline-flex;align-items:center;justify-content:center;border-radius:10px}.diagnostic-current-icon.healthy{color:var(--success);background:var(--success-soft)}.diagnostic-current-icon.attention{color:var(--danger);background:var(--danger-soft)}.diagnostic-current h2{margin:0;font-size:14px;color:var(--text-strong)}.diagnostic-current p{margin:3px 0 0;font-size:12px;color:var(--text-muted)}.diagnostic-issues-section{margin-bottom:14px}.diagnostic-issue-list{display:flex;flex-direction:column}.diagnostic-issue-row{width:100%;min-height:74px;padding:12px 16px;display:grid;grid-template-columns:34px minmax(0,1fr) auto minmax(120px,230px);align-items:center;gap:12px;border:0;border-bottom:1px solid color-mix(in srgb,var(--border) 68%,transparent);border-radius:0;background:transparent;box-shadow:none;text-align:left}.diagnostic-issue-row:last-child{border-bottom:0}.diagnostic-issue-row:hover{background:var(--bg-hover)}.diagnostic-issue-row:disabled{cursor:default;opacity:1}.diagnostic-issue-actions,.diagnostic-repair{display:flex;flex-direction:column;gap:12px;min-width:0}.diagnostic-issue-actions button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 18px}.diagnostic-repair small,.diagnostic-repair [role=status]{font-size:12px;line-height:1.6;overflow-wrap:anywhere}@media(max-width:760px){.diagnostic-issue-actions{grid-column:2 / -1}}.diagnostic-issue-icon{width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px}.diagnostic-issue-icon.recovered{color:var(--success);background:var(--success-soft)}.diagnostic-issue-icon.active{color:var(--danger);background:var(--danger-soft)}.diagnostic-issue-main{min-width:0;display:flex;flex-direction:column;color:var(--text-muted);font-size:12px;line-height:1.42}.diagnostic-issue-title{display:flex;align-items:center;gap:8px}.diagnostic-issue-title b{color:var(--text-strong);font-size:13px}.diagnostic-issue-main small,.diagnostic-issue-meta small{margin-top:3px;color:var(--text-faint);font-size:10px}.diagnostic-issue-meta{min-width:150px;display:flex;flex-direction:column;align-items:flex-end;color:var(--text)}.diagnostic-issue-meta b{font-size:12px}.diagnostic-empty-copy{margin:0;padding:30px 18px;color:var(--text-muted);font-size:12px;text-align:center}.diagnostic-run-list{padding:14px}.diagnostic-run{padding:16px;border:1px solid var(--border);border-radius:var(--radius-md);background:color-mix(in srgb,var(--bg-subtle) 42%,var(--bg-elevated))}.diagnostic-run+.diagnostic-run{margin-top:12px}.diagnostic-run>header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.diagnostic-run h3{margin:0;color:var(--text-strong);font-size:14px}.diagnostic-run header p{margin:3px 0 0;color:var(--text-muted);font-size:11px}.diagnostic-run-metrics{margin:13px 0 14px;display:flex;gap:20px;color:var(--text-muted);font-size:11px}.diagnostic-run-metrics b{color:var(--text-strong);font-variant-numeric:tabular-nums}.diagnostic-run-stages{margin:0;padding:0;list-style:none;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:7px}.diagnostic-run-stages li{min-width:0;padding:10px;display:flex;gap:8px;color:var(--text-faint);border-radius:var(--radius-sm);background:var(--bg-subtle)}.diagnostic-run-stages li.completed{color:var(--success);background:var(--success-soft)}.diagnostic-run-stages li.attention{color:var(--warning);background:var(--warning-soft)}.diagnostic-run-stages li b,.diagnostic-run-stages li small{display:block}.diagnostic-run-stages li b{color:currentColor;font-size:11px}.diagnostic-run-stages li small{margin-top:2px;color:var(--text-muted);font-size:9px;line-height:1.35}.diagnostic-overview{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:22px}.diagnostic-stat{min-width:0;padding:16px;display:grid;grid-template-columns:34px minmax(0,1fr);align-items:center;gap:4px 10px;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--bg-elevated);box-shadow:var(--shadow-card)}.diagnostic-stat-icon{grid-row:1 / span 2;width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;border-radius:9px;background:var(--info-soft);color:var(--info)}.diagnostic-stat-icon.danger{background:var(--danger-soft);color:var(--danger)}.diagnostic-stat-icon.success{background:var(--success-soft);color:var(--success)}.diagnostic-stat>div{min-width:0;display:flex;align-items:baseline;gap:7px}.diagnostic-stat b{color:var(--text-strong);font-size:21px;line-height:1.15;letter-spacing:-.02em}.diagnostic-stat span,.diagnostic-stat small{color:var(--text-muted);font-size:11px}.diagnostic-stat small{grid-column:2;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.settings-section{margin-bottom:18px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg-elevated);box-shadow:var(--shadow-card);overflow:hidden}.settings-section-head{padding:17px 18px;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;border-bottom:1px solid var(--border)}.settings-section h2{margin:0;color:var(--text-strong);font-size:15px;line-height:1.35}.settings-section-head p,.settings-storage p{margin:4px 0 0;color:var(--text-muted);font-size:12px}.diagnostic-filters{padding:12px 18px;display:grid;grid-template-columns:minmax(180px,1.5fr) minmax(120px,.7fr) minmax(130px,.8fr) minmax(190px,1.4fr);gap:9px;border-bottom:1px solid var(--border);background:color-mix(in srgb,var(--bg-subtle) 60%,var(--bg-elevated))}.diagnostic-technical-note{padding:9px 18px;color:var(--text-muted);border-bottom:1px solid var(--border);background:var(--info-soft);font-size:11px}.diagnostic-filters select,.diagnostic-filters input{min-width:0;height:34px;padding:5px 9px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-elevated);color:var(--text);font-size:12px}.diagnostic-table-wrap{max-height:520px;overflow:auto}.diagnostic-table{width:100%;border-collapse:collapse;table-layout:fixed;font-size:12px}.diagnostic-table th{position:sticky;top:0;z-index:2;padding:8px 11px;background:var(--bg-subtle);color:var(--text-muted);border-bottom:1px solid var(--border);text-align:left;font-size:10px;font-weight:700;letter-spacing:.04em}.diagnostic-table th:nth-child(1){width:122px}.diagnostic-table th:nth-child(2){width:170px}.diagnostic-table th:nth-child(3){width:145px}.diagnostic-table th:nth-child(4){width:72px}.diagnostic-table th:nth-child(5){width:78px}.diagnostic-table th:nth-child(6){width:64px}.diagnostic-table th:last-child{width:34px}.diagnostic-table td{padding:9px 11px;color:var(--text);border-bottom:1px solid color-mix(in srgb,var(--border) 65%,transparent);vertical-align:middle;overflow:hidden;text-overflow:ellipsis}.diagnostic-table tbody tr{transition:background-color .13s ease}.diagnostic-table tbody tr:hover{background:var(--bg-hover)}.diagnostic-table tbody tr.error-row{background:color-mix(in srgb,var(--danger-soft) 42%,transparent)}.diagnostic-table tbody tr.error-row:hover{background:color-mix(in srgb,var(--danger-soft) 72%,transparent)}.diagnostic-table td b,.diagnostic-table td small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.diagnostic-table td b{color:var(--text-strong);font-size:12px}.diagnostic-table td small{margin-top:1px;color:var(--text-faint);font-size:10px}.diagnostic-table time{color:var(--text-muted);font-variant-numeric:tabular-nums}.diagnostic-empty{height:110px;text-align:center;color:var(--text-muted)!important}.diagnostic-call-link{max-width:100%;min-height:0;padding:0;display:block;border:0;background:transparent;box-shadow:none;text-align:left}.diagnostic-call-link:hover b{color:var(--accent)}.diagnostic-row-open{width:28px;min-height:28px;padding:0;border-color:transparent;background:transparent;box-shadow:none}.settings-storage{padding:15px 18px;display:grid;grid-template-columns:34px minmax(0,1fr) auto;align-items:center;gap:11px}.settings-storage>span{width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;border-radius:9px;color:var(--accent);background:var(--accent-soft)}.settings-storage p{overflow-wrap:anywhere}.settings-storage>small{color:var(--text-faint);font-size:11px}.diagnostic-drawer-backdrop{position:fixed;inset:0;z-index:100;display:flex;justify-content:flex-end;background:#0f284638;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);animation:fade-in .14s ease both}.diagnostic-drawer{width:min(720px,calc(100vw - 110px));height:100%;padding:0 20px 28px;overflow:auto;background:var(--bg-canvas);border-left:1px solid var(--border);box-shadow:var(--shadow-float);animation:slide-in-right .22s var(--ease-out) both}@keyframes slide-in-right{0%{transform:translate(30px);opacity:.7}to{transform:translate(0);opacity:1}}.diagnostic-drawer-head{position:sticky;top:0;z-index:3;min-height:72px;margin:0 -20px;padding:13px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px;border-bottom:1px solid var(--border);background:color-mix(in srgb,var(--bg-canvas) 90%,transparent);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.diagnostic-drawer-head span{color:var(--text-faint);font-size:10px}.diagnostic-drawer-head h2{margin:2px 0 0;font-size:18px}.diagnostic-drawer-head button{width:32px;min-height:32px;padding:0}.diagnostic-detail-tabs{position:sticky;top:72px;z-index:2;margin:0 -20px;padding:8px 20px;display:flex;gap:4px;overflow-x:auto;border-bottom:1px solid var(--border);background:color-mix(in srgb,var(--bg-canvas) 93%,transparent);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.diagnostic-detail-tabs button{min-height:31px;padding:5px 10px;flex:none;border-color:transparent;color:var(--text-muted);background:transparent;box-shadow:none;font-size:11px}.diagnostic-detail-tabs button.active{color:var(--text-strong);border-color:var(--border);background:var(--bg-elevated)}.diagnostic-detail-body{padding-top:18px}.diagnostic-readable-summary{padding:15px;display:grid;grid-template-columns:36px minmax(0,1fr);gap:12px;border:1px solid color-mix(in srgb,var(--danger) 26%,var(--border));border-radius:var(--radius-md);color:var(--danger);background:var(--danger-soft)}.diagnostic-readable-summary.success,.diagnostic-readable-summary.recovered{border-color:color-mix(in srgb,var(--success) 26%,var(--border));color:var(--success);background:var(--success-soft)}.diagnostic-readable-summary>span{width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;background:color-mix(in srgb,currentColor 10%,var(--bg-elevated))}.diagnostic-readable-title{display:flex;align-items:center;justify-content:space-between;gap:12px}.diagnostic-readable-title h3{margin:0;color:var(--text-strong);font-size:14px}.diagnostic-readable-summary p{margin:5px 0 0;color:var(--text);font-size:12px;line-height:1.55}.diagnostic-explanation{margin:14px 0 0;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--bg-elevated)}.diagnostic-explanation>div{padding:11px 13px;display:grid;grid-template-columns:92px minmax(0,1fr);gap:12px;border-bottom:1px solid var(--border)}.diagnostic-explanation>div:last-child{border-bottom:0}.diagnostic-explanation dt{color:var(--text-muted);font-size:11px}.diagnostic-explanation dd{margin:0;color:var(--text-strong);font-size:12px;line-height:1.5}.diagnostic-meta{margin:14px 0 0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;overflow:hidden;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--border)}.diagnostic-meta>div{padding:10px 12px;background:var(--bg-elevated)}.diagnostic-meta>div.wide{grid-column:1 / -1}.diagnostic-meta dt{color:var(--text-faint);font-size:10px}.diagnostic-meta dd{margin:2px 0 0;color:var(--text-strong);font-size:12px;overflow-wrap:anywhere}.diagnostic-log-block,.diagnostic-error{margin-top:14px;overflow:hidden;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--bg-elevated)}.diagnostic-error{border-color:color-mix(in srgb,var(--danger) 30%,var(--border))}.diagnostic-log-block>div,.diagnostic-error h3{padding:8px 11px;border-bottom:1px solid var(--border)}.diagnostic-log-block>div{display:flex;align-items:center;justify-content:space-between;gap:10px}.diagnostic-log-block h3,.diagnostic-error h3{margin:0;color:var(--text-strong);font-size:12px}.diagnostic-log-block button{min-height:27px;padding:3px 8px;font-size:10px}.diagnostic-log-block pre,.diagnostic-error pre{max-height:360px;margin:0;padding:12px;overflow:auto;color:var(--text);background:color-mix(in srgb,var(--bg-subtle) 55%,var(--bg-elevated));font:11px/1.55 ui-monospace,SFMono-Regular,Menlo,monospace;white-space:pre-wrap;overflow-wrap:anywhere}.diagnostic-error pre{color:var(--danger);background:var(--danger-soft)}.diagnostic-no-artifact{padding:28px 0;color:var(--text-muted);font-size:12px;text-align:center}.health{display:block;margin:14px 0;border:1px solid var(--border);border-radius:var(--radius-md);font-size:13px}.health.err{background:var(--danger-soft);border-color:color-mix(in srgb,var(--danger) 24%,var(--border));color:var(--danger)}.empty-state{width:min(520px,100%);margin:clamp(56px,12vh,120px) auto;padding:36px;text-align:center;border:1px solid var(--border);border-radius:var(--radius-xl);background:var(--bg-elevated);box-shadow:var(--shadow-card)}.empty-state-icon{width:46px;height:46px;margin:0 auto 15px;display:flex;align-items:center;justify-content:center;border-radius:14px;background:var(--accent-soft);color:var(--accent)}.empty-state h2{font-size:19px;letter-spacing:-.01em}.empty-state p{margin:6px auto 18px;color:var(--text-muted);font-size:14px;line-height:1.6}.import-dropzone{position:relative;min-height:210px;padding:28px;display:grid;grid-template-columns:auto minmax(240px,1fr) minmax(300px,.9fr);align-items:center;gap:20px;border:1.5px dashed var(--border-strong);border-radius:var(--radius-xl);background:radial-gradient(circle at 12% 22%,color-mix(in srgb,var(--accent-soft) 54%,transparent),transparent 32%),var(--bg-elevated);transition:border-color .16s ease,background-color .16s ease,transform .16s var(--ease-out)}.import-dropzone.dragging{border-color:var(--accent);background:var(--accent-soft);transform:scale(.995)}.dropzone-icon{width:56px;height:56px;display:flex;align-items:center;justify-content:center;border-radius:17px;background:var(--accent-soft);color:var(--accent)}.dropzone-copy h2{font-size:20px;letter-spacing:-.015em}.dropzone-copy p{margin-top:6px;color:var(--text-muted);font-size:13px;line-height:1.6}.dropzone-controls{padding:16px;border:1px solid var(--border);border-radius:var(--radius-lg);background:color-mix(in srgb,var(--bg-elevated) 84%,transparent);box-shadow:0 8px 24px #0f28460a}.field-label{display:block;margin-bottom:7px;color:var(--text);font-size:12px;font-weight:650}.field-label span{color:var(--text-faint);font-weight:450}.new-course{margin:0;display:flex;gap:8px}.new-course input[type=text],.ask-row input,.ask-row textarea,.review-search{min-height:40px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-elevated);color:var(--text-strong);font-size:14px;transition:border-color .14s ease,box-shadow .14s ease}.new-course input[type=text]{min-width:0;flex:1;padding:8px 11px}.new-course input:focus,.ask-row input:focus,.ask-row textarea:focus,.review-search:focus{border-color:var(--info);box-shadow:0 0 0 3px color-mix(in srgb,var(--info) 14%,transparent)}.section-heading{margin:30px 0 13px;display:flex;align-items:flex-end;justify-content:space-between}.section-heading h2{font-size:18px;letter-spacing:-.01em}.section-heading p,.section-heading>span{color:var(--text-muted);font-size:12px}.section-heading p{margin-top:2px}.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(245px,1fr));gap:14px}.course-card{position:relative;min-height:180px;padding:17px;display:flex;flex-direction:column;align-items:stretch;text-align:left;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg-elevated);box-shadow:var(--shadow-card)}.course-card:hover{border-color:var(--border-strong);box-shadow:0 12px 30px #0f284614;transform:translateY(-2px)}.course-card:active{transform:translateY(0) scale(.985)}.course-card-top,.course-progress-copy,.course-open{display:flex;align-items:center;justify-content:space-between}.course-icon{width:34px;height:34px;display:flex;align-items:center;justify-content:center;border-radius:10px;color:var(--accent);background:var(--accent-soft)}.course-title{margin-top:15px;color:var(--text-strong);font-size:16px;line-height:1.35;font-weight:700}.course-progress{margin-top:12px;display:block;color:var(--text-muted)}.course-progress-copy{margin-bottom:5px;font-size:11px}.bar{background:var(--bg-subtle)}.bar .fill{background:var(--success);transition:width .28s var(--ease-in-out)}.course-status-copy{margin-top:10px;color:var(--text-muted);font-size:12px}.course-open{margin-top:auto;padding-top:14px;color:var(--accent);font-size:12px;font-weight:650;justify-content:flex-start;gap:5px}.import-progress-card{padding:24px;border:1px solid var(--border);border-radius:var(--radius-xl);background:var(--bg-elevated);box-shadow:var(--shadow-card)}.progress-overview{display:flex;align-items:flex-end;justify-content:space-between;gap:24px}.progress-overview>div:first-child{display:flex;flex-direction:column}.progress-kicker{color:var(--text-muted);font-size:12px}.progress-overview strong{font-size:30px;line-height:1.15;letter-spacing:-.03em}.progress-detail{display:flex;flex-direction:column;align-items:flex-end;color:var(--text-muted);font-size:12px}.bar.big{max-width:none;height:8px;margin:16px 0 22px}.pipeline-steps{list-style:none;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:7px}.pipeline-steps li{min-width:0;padding:11px;display:flex;align-items:flex-start;gap:8px;border-radius:var(--radius-md);color:var(--text-faint);background:var(--bg-subtle)}.pipeline-steps li.active{color:var(--info);background:var(--info-soft)}.pipeline-steps li.done{color:var(--success);background:var(--success-soft)}.pipeline-icon{margin-top:1px;display:inline-flex}.pipeline-steps li.active .pipeline-icon{animation:spin .9s linear infinite}.pipeline-steps b,.pipeline-steps small{display:block}.pipeline-steps b{color:currentColor;font-size:12px}.pipeline-steps small{margin-top:3px;color:var(--text-muted);font-size:10px;line-height:1.45}.next-step-card{margin-top:14px;padding:17px 18px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:14px;border:1px solid color-mix(in srgb,var(--warning) 24%,var(--border));border-radius:var(--radius-lg);background:var(--warning-soft);color:var(--warning)}.next-step-card.success{border-color:color-mix(in srgb,var(--success) 24%,var(--border));background:var(--success-soft);color:var(--success)}.next-step-card.danger{border-color:color-mix(in srgb,var(--danger) 24%,var(--border));background:var(--danger-soft);color:var(--danger)}.next-step-icon{width:38px;height:38px;display:flex;align-items:center;justify-content:center;border-radius:11px;background:color-mix(in srgb,currentColor 10%,transparent)}.next-step-card h2{color:currentColor;font-size:15px}.next-step-card p{margin-top:2px;color:var(--text);font-size:12px}.ingest-error-content{min-width:0}.next-step-card .ingest-error-message{margin-top:4px;color:var(--text-strong);font-size:13px;line-height:1.55}.next-step-card .ingest-saved-progress{margin-top:7px;color:var(--text-muted);line-height:1.5}.ingest-error-meta{margin-top:10px;display:flex;align-items:center;gap:8px;flex-wrap:wrap;color:var(--text-muted);font-size:11px}.ingest-error-meta code,.ingest-error-attempts code{padding:2px 6px;border:1px solid color-mix(in srgb,var(--danger) 20%,var(--border));border-radius:6px;background:color-mix(in srgb,var(--bg-elevated) 74%,transparent);color:var(--danger);font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:10px;white-space:nowrap}.ingest-error-attempts{margin-top:12px;color:var(--text);font-size:12px}.ingest-error-attempts>b{color:var(--text-strong)}.ingest-error-attempts ol{margin-top:6px;display:grid;gap:6px;list-style:none}.ingest-error-attempts li{padding:8px 9px;display:grid;grid-template-columns:minmax(120px,auto) minmax(180px,1fr) auto;align-items:center;gap:8px;border:1px solid color-mix(in srgb,var(--danger) 17%,var(--border));border-radius:9px;background:color-mix(in srgb,var(--bg-elevated) 78%,transparent)}.attempt-source{color:var(--text-strong);font-weight:700}.attempt-message{min-width:0;color:var(--text);line-height:1.45}.next-step-card .ingest-error-action{margin-top:10px;color:var(--text);line-height:1.5}.study-screen{position:relative;width:min(920px,100%);max-width:none;height:100%;margin:0 auto;display:grid;grid-template-rows:auto minmax(0,1fr) auto}.study-head{padding-bottom:14px;border-bottom:0}.study-title-row{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:12px}.study-eyebrow{margin-bottom:2px;color:var(--accent);font-size:11px;font-weight:750;letter-spacing:.08em;text-transform:uppercase}.focus-name{color:var(--text-strong);font-size:24px;line-height:1.2;letter-spacing:-.022em}.study-total{flex:none;display:flex;align-items:baseline;gap:6px;color:var(--text-muted)}.study-total span{color:var(--text-strong);font-size:17px;font-weight:700}.study-total small{font-size:11px}.step-progress{padding:12px 14px 14px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg-elevated);box-shadow:var(--shadow-card)}.step-summary{margin-bottom:9px;display:flex;align-items:center;justify-content:space-between;color:var(--text-muted);font-size:11px}.step-summary b{color:var(--accent);font-weight:700}.steps{position:relative;list-style:none;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:4px}.steps:before{content:"";position:absolute;top:12px;left:8.3%;right:8.3%;height:1px;background:var(--border);z-index:0}.step{position:relative;z-index:1;min-width:0;padding:0;display:flex;flex-direction:column;align-items:center;gap:5px;background:transparent;color:var(--text-faint);font-size:10px;text-align:center}.step.done,.step.active{background:transparent;color:var(--accent)}.step.active{font-weight:700}.step-num{width:25px;height:25px;border:1px solid var(--border);border-radius:50%;background:var(--bg-elevated);color:var(--text-faint);display:inline-flex;align-items:center;justify-content:center;font-size:10px}.step.done .step-num{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}.step.active .step-num{border-color:var(--accent);background:var(--accent);color:#fff;box-shadow:0 0 0 4px var(--accent-soft)}.step-label{max-width:100%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.knowledge-contract{margin-top:9px;padding:10px 12px;border:1px solid color-mix(in srgb,var(--accent) 20%,var(--border));border-radius:var(--radius-md);background:var(--accent-soft);color:var(--text);font-size:12px}.contract-baseline{display:flex;align-items:center;gap:8px}.contract-icon{display:inline-flex;color:var(--accent)}.contract-baseline b{margin:0;color:var(--accent)}.contract-terms{margin:7px 0 0 24px}.contract-terms summary{color:var(--accent);font-weight:600}.contract-terms dl{margin-top:8px;padding-top:8px;border-top:1px solid color-mix(in srgb,var(--accent) 18%,transparent)}.contract-terms dt{color:var(--text-strong)}.contract-terms dd{color:var(--text-muted)}.chat{min-height:0;padding:18px 6px 22px;scroll-behavior:smooth;gap:14px}.recommend-card{width:min(620px,100%);margin:auto;padding:22px;display:grid;grid-template-columns:auto 1fr;gap:13px;border:1px solid var(--border);border-radius:var(--radius-xl);background:var(--bg-elevated);box-shadow:var(--shadow-card)}.recommend-icon{width:38px;height:38px;display:flex;align-items:center;justify-content:center;border-radius:12px;background:var(--accent-soft);color:var(--accent)}.recommend-label{color:var(--accent);font-size:11px;font-weight:700}.recommend-card h2{margin-top:2px;font-size:20px;letter-spacing:-.015em}.recommend-card p{margin-top:4px;color:var(--text-muted);font-size:13px;line-height:1.6}.bubble{width:fit-content;max-width:min(86%,720px);padding:12px 15px;border-radius:15px;color:var(--text);font-size:14px;line-height:1.7}.bubble.tutor{border-color:var(--border);background:var(--bg-elevated);box-shadow:0 3px 14px #0f284609}.bubble.user{background:var(--accent-soft);color:var(--text-strong)}.bubble-label{display:block;margin-bottom:4px;color:var(--accent);font-size:10px;font-weight:750;letter-spacing:.05em}.bubble.streaming{border-color:color-mix(in srgb,var(--accent) 50%,var(--border))}.grade-card{width:min(680px,100%);padding:14px;align-self:flex-start;display:grid;gap:9px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg-elevated)}.grade-card.pass{border-color:color-mix(in srgb,var(--success) 28%,var(--border));background:var(--success-soft)}.grade-card.partial{border-color:color-mix(in srgb,var(--warning) 28%,var(--border));background:var(--warning-soft)}.grade-card.fail{border-color:color-mix(in srgb,var(--danger) 28%,var(--border));background:var(--danger-soft)}.grade-title{display:flex;align-items:center;gap:7px;color:var(--text-strong);font-size:13px}.grade-card.pass .grade-title{color:var(--success)}.grade-card.partial .grade-title{color:var(--warning)}.grade-card.fail .grade-title{color:var(--danger)}.grade-line{display:grid;grid-template-columns:76px 1fr;gap:8px;font-size:12px}.grade-line span{color:var(--text-muted)}.grade-line p{color:var(--text)}.grade-feedback{padding-top:8px;border-top-color:color-mix(in srgb,currentColor 20%,transparent);color:var(--text);font-size:12px}.jump-latest{position:absolute;right:10px;bottom:116px;z-index:5;min-height:32px;border-radius:999px;box-shadow:var(--shadow-float);font-size:12px}.study-error{margin:0 4px 8px}.action-bar{padding:12px 4px 0;border-top-color:var(--border);background:var(--bg-canvas);gap:8px}.btn-row{min-height:36px;gap:7px}.btn-row button{min-height:34px;padding:6px 11px;border-color:var(--border);background:var(--bg-elevated);color:var(--text);font-size:12px}.btn-row .warn{background:var(--warning-soft);border-color:color-mix(in srgb,var(--warning) 22%,var(--border));color:var(--warning)}.composer-modes{display:flex;align-items:center;gap:2px}.composer-modes button{min-height:28px;padding:4px 8px;border:0;border-radius:6px;background:transparent;color:var(--text-muted);font-size:11px}.composer-modes button.active{background:var(--bg-subtle);color:var(--accent);font-weight:650}.ask-row{padding:5px;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:7px;border:1px solid var(--border);border-radius:13px;background:var(--bg-elevated);box-shadow:0 5px 20px #0f28460e}.ask-row textarea{width:100%;min-height:38px;max-height:100px;padding:8px 10px;resize:vertical;border:0;background:transparent;line-height:1.45}.ask-row textarea:focus{box-shadow:none}.composer-send{min-height:38px;padding-inline:13px}.ask-row .composer-send{border-color:var(--accent);background:var(--accent);color:#fff;font-weight:650}.ask-row .composer-send:hover:not(:disabled){border-color:var(--accent-hover);background:var(--accent-hover)}.judge-answer-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.judge-answer-row .judge-answer{min-height:48px;justify-content:center;gap:7px;font-size:14px;font-weight:650}.judge-answer-row .valid{border-color:color-mix(in srgb,var(--accent) 30%,var(--border));background:var(--accent-soft);color:var(--accent)}.judge-answer-row .valid:hover:not(:disabled){border-color:var(--accent);background:color-mix(in srgb,var(--accent-soft) 76%,var(--accent))}.judge-answer-row .invalid{border-color:color-mix(in srgb,var(--danger) 30%,var(--border));background:var(--danger-soft);color:var(--danger)}.judge-answer-row .invalid:hover:not(:disabled){border-color:var(--danger);background:color-mix(in srgb,var(--danger-soft) 76%,var(--danger))}.review-screen{padding-bottom:90px}.review-controls{position:sticky;top:-1px;z-index:8;margin:-6px 0 18px;padding:9px;display:flex;align-items:center;gap:8px;border:1px solid var(--border);border-radius:var(--radius-md);background:color-mix(in srgb,var(--bg-canvas) 88%,transparent);-webkit-backdrop-filter:blur(18px) saturate(135%);backdrop-filter:blur(18px) saturate(135%)}.review-search-wrap{min-width:220px;flex:1;position:relative;display:flex;align-items:center;color:var(--text-muted)}.review-search-wrap>svg{position:absolute;left:11px;z-index:1}.review-search{width:100%;padding:8px 11px 8px 34px}.filter-button{flex:none;font-size:12px}.filter-button.active{border-color:color-mix(in srgb,var(--warning) 28%,var(--border));background:var(--warning-soft);color:var(--warning)}.review-result-count{padding:0 6px;color:var(--text-muted);font-size:11px;white-space:nowrap}.review-head{margin-bottom:20px}.review-quality-error{max-width:none;margin:0;padding:13px;display:flex;flex-direction:row;align-items:flex-start;gap:10px;border-color:color-mix(in srgb,var(--warning) 28%,var(--border));border-radius:var(--radius-md);background:var(--warning-soft);color:var(--warning)}.quality-icon{margin-top:1px;display:inline-flex}.review-quality-error>div{display:flex;flex-direction:column;gap:2px}.review-quality-error span{font-size:12px}.review-quality-error small{color:var(--text-muted);font-size:11px}.review-chapter{margin-bottom:26px}.review-chapter-title{margin:0 2px 9px;display:grid;grid-template-columns:auto 1fr auto;align-items:baseline;gap:8px}.review-chapter-title>span{color:var(--accent);font-size:10px;font-weight:750;letter-spacing:.04em;text-transform:uppercase}.review-chapter-title h2{font-size:15px}.review-chapter-title small{color:var(--text-muted);font-size:11px}.concept-row{position:relative;min-height:64px;margin-bottom:7px;padding:0;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;border-color:var(--border);border-radius:var(--radius-md);background:var(--bg-elevated);box-shadow:0 2px 10px #0f284606;overflow:hidden}.concept-row.deleted{opacity:.62;background:var(--bg-subtle)}.concept-main{min-width:0;min-height:62px;padding:11px 13px;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:9px;text-align:left;border:0;border-radius:0;background:transparent}.concept-main:hover{background:var(--bg-hover)}.concept-expand{display:inline-flex;color:var(--text-muted)}.concept-copy{min-width:0;display:flex;flex-direction:column;gap:2px}.concept-name{color:var(--text-strong);font-size:13px;font-weight:700}.concept-oneline{max-width:720px;color:var(--text-muted);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.concept-flags{display:flex;justify-content:flex-end;gap:5px;flex-wrap:wrap}.warn-chip{border:1px solid color-mix(in srgb,var(--warning) 18%,transparent);border-radius:999px;background:var(--warning-soft);color:var(--warning);font-size:10px;font-weight:650}.concept-exclude{min-height:32px;margin-right:11px;padding:5px 8px;border-color:transparent;background:transparent;color:var(--text-muted);font-size:11px}.concept-exclude:hover{background:var(--bg-hover);color:var(--text)}.concept-detail{grid-column:1 / -1;margin:0;padding:13px 42px 16px;border-top:1px solid var(--border);background:var(--bg-canvas);color:var(--text);font-size:12px;line-height:1.65}.concept-detail p+p{margin-top:7px}.concept-detail blockquote{margin:9px 0 0;padding:8px 11px;border-left-color:var(--accent);border-radius:0 7px 7px 0;background:var(--bg-elevated);color:var(--text-muted)}.concept-detail blockquote.low-conf{border-left-color:var(--warning);background:var(--warning-soft)}.review-no-results{padding:48px 0;color:var(--text-muted);text-align:center;font-size:13px}.review-publish{position:sticky;bottom:-1px;z-index:10;margin-top:18px;padding:13px 14px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:11px;border:1px solid color-mix(in srgb,var(--success) 26%,var(--border));border-radius:var(--radius-lg);background:color-mix(in srgb,var(--success-soft) 88%,transparent);-webkit-backdrop-filter:blur(22px) saturate(145%);backdrop-filter:blur(22px) saturate(145%);box-shadow:var(--shadow-float);color:var(--success)}.review-publish.blocked{border-color:color-mix(in srgb,var(--warning) 28%,var(--border));background:color-mix(in srgb,var(--warning-soft) 90%,transparent);color:var(--warning)}.publish-status-icon{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:11px;background:color-mix(in srgb,currentColor 10%,transparent)}.review-publish>div{display:flex;flex-direction:column}.review-publish b{color:currentColor;font-size:13px}.review-publish span:not(.publish-status-icon){color:var(--text-muted);font-size:11px}.map-layout{height:100%;min-height:0;background:var(--bg-canvas)}.map-tree{width:238px;padding:18px 13px;background:var(--bg-app);border-right-color:var(--border)}.map-tree-head{margin:0 5px 15px;display:flex;align-items:center;justify-content:space-between;color:var(--text-muted);font-size:11px;font-weight:700;letter-spacing:.05em;text-transform:uppercase}.map-tree-head b{color:var(--accent);font-size:12px;letter-spacing:0}.tree-chapter{margin-bottom:17px}.tree-ch-title{margin:0 7px 5px;color:var(--text-muted);font-size:11px}.tree-node{min-height:34px;padding:6px 7px;gap:7px;border-radius:8px;color:var(--text);font-size:11px}.tree-node:hover{background:var(--bg-hover)}.tree-node:disabled{opacity:.58}.tree-status-icon{width:18px;height:18px;flex:none;display:flex;align-items:center;justify-content:center;border-radius:6px;background:color-mix(in srgb,currentColor 11%,transparent)}.tree-name{color:var(--text-strong);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.tree-status{color:var(--text-muted);font-size:9px}.map-main{min-width:0;padding:0}.map-toolbar{flex:none;min-height:78px;padding:15px 18px;display:flex;align-items:center;justify-content:space-between;gap:18px;border-bottom:1px solid var(--border);background:var(--bg-canvas)}.map-toolbar h1{color:var(--text-strong);font-size:19px;line-height:1.25;letter-spacing:-.015em}.map-toolbar p{margin-top:3px;color:var(--text-muted);font-size:11px}.map-actions{flex:none;display:flex;align-items:center;gap:4px}.map-actions button{min-width:32px;min-height:32px;padding:5px 8px;font-size:11px}.map-actions span{min-width:42px;color:var(--text-muted);font-size:10px;text-align:center}.map-scroll{margin:14px 18px 18px;border-color:var(--border);border-radius:var(--radius-lg);background:linear-gradient(color-mix(in srgb,var(--border) 25%,transparent) 1px,transparent 1px),linear-gradient(90deg,color-mix(in srgb,var(--border) 25%,transparent) 1px,transparent 1px),var(--bg-elevated);background-size:24px 24px}.map-canvas{position:relative;min-width:100%;min-height:100%}.map-canvas svg{display:block;transition:transform .18s var(--ease-out)}.node:focus-visible{outline:none}.node:focus-visible rect:first-of-type{stroke-width:4px}.node-name{fill:var(--text-strong);font-size:13px}.node-ch{fill:var(--text-muted);font-size:10px}.node-one{fill:var(--text-faint);font-size:10px}.map-tooltip{max-width:280px;padding:10px 12px;border-color:var(--border);border-radius:var(--radius-md);background:var(--bg-elevated);color:var(--text);box-shadow:var(--shadow-float);font-size:12px}.map-tooltip b{color:var(--text-strong)}.tooltip-meta{color:var(--text-muted)}.progress-section{margin-top:28px}.section-heading.compact{margin:0 0 11px;align-items:center}.chapter-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.chapter-progress{margin:0;padding:17px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg-elevated);box-shadow:var(--shadow-card)}.chapter-line{margin-bottom:10px;display:flex;align-items:flex-start;justify-content:space-between}.chapter-line>div{min-width:0;display:flex;flex-direction:column}.chapter-line span{color:var(--accent);font-size:10px;font-weight:700;letter-spacing:.04em;text-transform:uppercase}.chapter-line b{margin-top:2px;color:var(--text-strong);font-size:14px}.chapter-line strong{color:var(--text-strong);font-size:17px}.concept-list{margin-top:11px;display:grid;gap:4px}.progress-concept{width:100%;min-height:34px;padding:5px 6px;justify-content:flex-start;border-color:transparent;background:transparent;color:var(--text);font-size:11px}.progress-concept:hover{background:var(--bg-hover)}.progress-concept>span:nth-child(2){min-width:0;flex:1;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;text-align:left}.progress-concept-icon{width:22px;height:22px;display:flex;align-items:center;justify-content:center;border-radius:7px;background:var(--bg-subtle);color:var(--text-muted)}.wrong-list,.queue-list{display:grid;gap:6px}.wrong-row{min-height:62px;margin:0;padding:10px 12px;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:10px;border-color:var(--border);border-radius:var(--radius-md);background:var(--bg-elevated);font-size:12px}.wrong-row.cleared{opacity:.68}.wrong-status{width:30px;height:30px;display:flex;align-items:center;justify-content:center;border-radius:9px;background:var(--danger-soft);color:var(--danger)}.wrong-row.cleared .wrong-status{background:var(--success-soft);color:var(--success)}.wrong-copy{min-width:0;display:flex;flex-direction:column;gap:2px}.wrong-copy b{color:var(--text-strong);font-size:12px}.wrong-copy span{color:var(--text-muted);overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.wrong-meta{flex:none}.inline-empty{padding:24px;border:1px dashed var(--border);border-radius:var(--radius-md);color:var(--text-muted);text-align:center;font-size:12px}.queue-row{min-height:52px;padding:9px 12px;align-items:center;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--bg-elevated)}.queue-term{min-width:110px;color:var(--text-strong);font-size:13px;font-weight:700}.queue-status{display:flex;flex-direction:column;color:var(--text-muted)}.queue-status small{margin-top:2px;color:var(--text-faint);overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.sprint-screen h2{margin:0}.sprint-cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.sprint-card{position:relative;min-height:220px;padding:18px;display:grid;grid-template-columns:auto 1fr;grid-template-rows:1fr auto;gap:12px;border-color:var(--border);border-radius:var(--radius-lg);background:var(--bg-elevated);box-shadow:var(--shadow-card)}.sprint-card.recommended{border-color:color-mix(in srgb,var(--accent) 36%,var(--border));box-shadow:0 12px 34px color-mix(in srgb,var(--accent) 11%,transparent)}.sprint-card.attention{border-color:color-mix(in srgb,var(--danger) 28%,var(--border))}.sprint-icon{width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:12px;background:var(--accent-soft);color:var(--accent)}.sprint-card.attention .sprint-icon{background:var(--danger-soft);color:var(--danger)}.sprint-card-copy{min-width:0}.sprint-kicker{color:var(--text-muted);font-size:10px;font-weight:700;letter-spacing:.05em;text-transform:uppercase}.sprint-card-copy h2{margin-top:3px;color:var(--text-strong);font-size:17px}.sprint-card-copy p{margin-top:7px;color:var(--text-muted);font-size:12px;line-height:1.6}.sprint-card>button{grid-column:2;justify-self:start}.sprint-msg{padding:11px 13px;display:flex;align-items:center;gap:7px;border:1px solid color-mix(in srgb,var(--success) 22%,var(--border));border-radius:var(--radius-md);background:var(--success-soft);color:var(--success);font-size:12px}.export-output{margin-top:14px;border-color:var(--border);border-radius:var(--radius-lg);background:var(--bg-elevated);box-shadow:var(--shadow-card)}.export-head{padding:10px 12px;display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--bg-subtle);border-bottom-color:var(--border)}.export-head>div:first-child{display:flex;flex-direction:column}.export-head b{color:var(--text-strong);font-size:12px}.export-head span{color:var(--text-muted);font-size:10px}.export-actions{display:flex;gap:6px}.export-output pre{color:var(--text);font-family:SF Mono,ui-monospace,monospace;line-height:1.6}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:1080px){.diagnostic-health{grid-template-columns:42px minmax(0,1fr)}.diagnostic-health-metrics{grid-column:1 / -1;padding-top:12px;border-top:1px solid color-mix(in srgb,var(--border) 75%,transparent);border-left:0}.diagnostic-health-metrics>div{padding-left:0}.diagnostic-overview,.diagnostic-filters{grid-template-columns:repeat(2,minmax(0,1fr))}.diagnostic-run-stages{grid-template-columns:repeat(3,minmax(0,1fr))}.import-dropzone{grid-template-columns:auto 1fr}.dropzone-controls{grid-column:1 / -1}.pipeline-steps{grid-template-columns:repeat(3,minmax(0,1fr))}.study-screen{width:100%}.chapter-grid{grid-template-columns:1fr}}@media(max-width:940px){:root{--nav-width: 76px}.navrail{padding-inline:7px}.brand,.nav-item{width:60px}.stage{padding:24px 26px 34px}.stage-map{padding:0}.stage-study{padding-bottom:16px}.app-toolbar{padding-inline:22px}.page-header{margin-bottom:20px}.diagnostic-table th:nth-child(3),.diagnostic-table td:nth-child(3),.diagnostic-table th:nth-child(5),.diagnostic-table td:nth-child(5){display:none}.diagnostic-drawer{width:calc(100vw - var(--nav-width))}.diagnostic-issue-row{grid-template-columns:34px minmax(0,1fr) 18px}.diagnostic-issue-meta{grid-column:2;align-items:flex-start;min-width:0}.diagnostic-issue-row>svg{grid-column:3;grid-row:1 / span 2}.step-label{font-size:9px}.bubble{max-width:92%}.concept-main{grid-template-columns:auto minmax(0,1fr)}.concept-flags{grid-column:2;justify-content:flex-start}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}@media(prefers-reduced-transparency:reduce){.navrail,.app-toolbar{background:var(--bg-app);-webkit-backdrop-filter:none;backdrop-filter:none}}@media(prefers-contrast:more){:root{--border: #aaa397;--text-muted: #514d45}}.course-card{border-width:2px;box-shadow:0 4px 0 var(--border);transition:transform .15s var(--ease-out),box-shadow .15s var(--ease-out),border-color .15s ease}.course-card:hover{border-color:var(--accent);box-shadow:0 6px color-mix(in srgb,var(--accent) 30%,var(--border));transform:translateY(-2px)}.course-card:active{transform:translateY(2px);box-shadow:0 2px 0 var(--border)}.bar{height:10px;border-radius:var(--radius-pill);background:var(--bg-subtle)}.bar .fill{background:var(--accent);border-radius:var(--radius-pill)}.bar.big{height:12px}.step.active .step-num{box-shadow:0 0 0 5px var(--accent-soft)}.import-dropzone,.dropzone-controls{border-width:2px}.sprint-card{border-width:2px;box-shadow:0 4px 0 var(--border);transition:transform .15s var(--ease-out),box-shadow .15s var(--ease-out),border-color .15s ease}.sprint-card:hover{border-color:var(--accent);box-shadow:0 6px color-mix(in srgb,var(--accent) 30%,var(--border));transform:translateY(-1px)}.ask-row{border-width:2px}.ask-row:focus-within{border-color:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 18%,transparent),0 5px 20px #0f28460e}.settings-section,.concept-row,.review-controls{border-width:2px}.grade-card.pass{border-color:color-mix(in srgb,var(--accent) 30%,var(--border));background:var(--accent-soft)}.grade-card.pass .grade-title{color:var(--accent)}.eyebrow{color:var(--accent);font-weight:800;letter-spacing:.1em}.step-progress{border-width:2px;border-top:3px solid var(--accent)}:root{color-scheme:light;--bg-app: #f0f4f8;--bg-canvas: #f0f4f8;--bg-elevated: #ffffff;--bg-subtle: #e8f3fb;--bg-hover: #e8f6ff;--text-strong: #1a2535;--text: #2d3f52;--text-muted: #4e6579;--text-faint: #4f6a7f;--border: #cde0ef;--border-strong: #a8c8e2;--accent: #1cb0f6;--accent-hover: #50c8ff;--accent-deep: #0090cc;--accent-soft: #e8f6ff;--success: #58cc02;--success-deep: #287000;--success-soft: #d7ffb8;--warning: #e09a00;--warning-soft: #fff3cc;--danger: #ff4b4b;--danger-deep: #ea2b2b;--danger-soft: #ffdfe0;--shadow-card: 0 4px 0 var(--border);--shadow-btn-primary: 0 4px 0 var(--accent-deep);--shadow-btn-default: 0 4px 0 var(--border-strong);--radius-sm: 12px;--radius-md: 14px;--radius-lg: 16px;--radius-xl: 20px;--nav-width: 88px;--toolbar-height: 56px;--font-display: "Nunito", "PingFang SC", "Noto Sans SC", "Hiragino Sans GB", sans-serif;--font-body: "PingFang SC", "Noto Sans SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif}html,body,#app,.shell,.workspace{background:var(--bg-canvas)}body{font-family:var(--font-body)}.navrail,.brand,.nav-item,.toolbar-screen,.toolbar-help,.toolbar-library,.eyebrow,h1,h2,h3,button,.status-badge,.course-title,.course-open,.section-heading h2,.dropzone-copy h2,.pipeline-steps,.study-actions,.sprint-card h2{font-family:var(--font-display)}button{border-width:2px;font-weight:800}button:hover:not(:disabled){border-color:var(--accent);background:var(--accent-soft);color:var(--accent-deep)}.primary,.new-course .primary,.actions .primary,.btn-row .primary{background:var(--action);border-color:var(--action);color:#fff;box-shadow:0 4px 0 var(--action-hover)}.primary:hover:not(:disabled),.new-course .primary:hover:not(:disabled),.actions .primary:hover:not(:disabled),.btn-row .primary:hover:not(:disabled){background:var(--action-hover);border-color:var(--action-hover);color:#fff}.navrail{width:var(--nav-width);padding:16px 10px 10px;gap:6px;background:var(--bg-elevated);border-right:2px solid var(--border);-webkit-backdrop-filter:none;backdrop-filter:none}.brand{width:66px;min-height:48px;margin:0 0 8px;padding:0;box-shadow:none}.brand>span:last-child{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.brand-mark{width:48px;height:48px;border-radius:14px;background:var(--action);box-shadow:0 4px 0 var(--action-hover)}.nav-item{width:66px;min-height:56px;padding:7px 4px;gap:4px;border:2px solid transparent;border-radius:12px;color:var(--text-muted);font-size:11px;box-shadow:none}.nav-item:hover:not(:disabled){background:var(--accent-soft);border-color:transparent;color:var(--accent-deep)}.nav-item.active{background:var(--accent-soft);border-color:var(--border);color:var(--accent-deep);box-shadow:0 3px 0 var(--border)}.nav-icon svg{width:20px;height:20px}.app-toolbar{min-height:var(--toolbar-height);padding:0 26px;background:var(--bg-elevated);border-bottom:2px solid var(--border);-webkit-backdrop-filter:none;backdrop-filter:none}.toolbar-screen{color:var(--text-strong);font-weight:900}.course-context,.toolbar-library{box-shadow:none}.stage{padding:28px 36px 42px;background:var(--bg-canvas)}.stage-map,.stage-study{padding:0}.site-footer{position:fixed;left:var(--nav-width);right:0;bottom:0;z-index:4;min-height:20px;padding:3px 12px;border:0;background:transparent;pointer-events:none}.site-footer a{pointer-events:auto}.library.page,.progress-screen.page,.sprint-screen.page{width:min(920px,100%)}.import-screen.page{width:min(720px,100%)}.review-screen.page{width:min(820px,100%)}.settings-page.page{width:min(920px,100%)}.page-header{margin-bottom:22px}.eyebrow{margin-bottom:6px;color:var(--action);font-size:11px;font-weight:900;letter-spacing:.1em}.page-header h1{font-size:clamp(26px,2.5vw,32px);font-weight:900;letter-spacing:-.025em}.page-header p{margin-top:7px;font-size:14px}.import-dropzone{min-height:126px;padding:24px 26px;grid-template-columns:auto minmax(260px,1fr) minmax(330px,.9fr);gap:18px;border:2px dashed var(--border-strong);border-radius:20px;background:var(--bg-elevated);box-shadow:0 4px 0 var(--border)}.dropzone-icon{width:52px;height:52px;border-radius:12px;background:var(--accent-soft);box-shadow:0 3px 0 var(--border)}.dropzone-copy h2{font-size:19px;font-weight:900}.dropzone-controls{padding:12px;border:2px solid var(--border);border-radius:16px;box-shadow:0 3px 0 var(--border)}.new-course input[type=text],.review-search,.ask-row textarea{border-width:2px}.section-heading{margin:30px 0 12px}.section-heading h2{font-size:18px;font-weight:900}.course-grid{grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}.course-card{min-height:178px;padding:16px;border:2px solid var(--border);border-radius:16px;box-shadow:0 4px 0 var(--border)}.course-card:hover:not(:disabled){border-color:var(--accent);background:var(--bg-elevated);color:inherit;box-shadow:0 6px 0 var(--border-strong);transform:translateY(-2px)}.course-title{font-weight:900}.bar{height:10px;background:var(--bg-subtle)}.bar .fill{background:var(--accent)}.course-open{color:var(--accent-deep);font-weight:900}.import-progress-card,.chapter-progress,.settings-section,.diagnostic-health,.export-output{border:2px solid var(--border);border-radius:16px;box-shadow:0 4px 0 var(--border)}.import-progress-card{padding:22px}.pipeline-steps{gap:6px}.pipeline-steps li{padding:10px 8px;border:2px solid transparent;border-radius:12px}.pipeline-steps li.active{border-color:var(--border)}.next-step-card{border-width:2px;box-shadow:0 4px 0 var(--border)}.review-controls{border:2px solid var(--border);background:#f0f4f8f0}.concept-row{border:2px solid var(--border);box-shadow:0 3px 0 var(--border)}.concept-main,.concept-exclude,.progress-concept,.tree-node{box-shadow:none}.review-publish{bottom:8px;border-width:2px;box-shadow:0 5px color-mix(in srgb,currentColor 28%,var(--border))}.map-tree{width:260px;padding:18px 14px;background:var(--bg-elevated);border-right:2px solid var(--border)}.map-main{background:var(--bg-canvas)}.map-toolbar{min-height:76px;padding:14px 20px;background:var(--bg-elevated);border-bottom:2px solid var(--border)}.map-toolbar h1{font-size:20px;font-weight:900}.map-actions button{box-shadow:0 3px 0 var(--border-strong)}.map-scroll{margin:0;border:0;border-radius:0;background-color:var(--bg-canvas);background-image:radial-gradient(var(--border-strong) 1.2px,transparent 1.2px);background-size:20px 20px}.map-canvas rect:first-of-type{filter:drop-shadow(0 3px 0 var(--border))}.study-screen{width:100%;height:100%;margin:0;grid-template-rows:auto minmax(0,1fr) auto;background:var(--bg-canvas)}.study-head,.chat{width:min(740px,calc(100% - 40px));margin-inline:auto}.study-head{padding:20px 0 10px}.study-mastery-row{display:grid;grid-template-columns:auto minmax(120px,1fr) auto;align-items:center;gap:12px;margin-bottom:14px;color:var(--text-muted);font-size:12px;font-weight:800}.study-mastery-row .bar{height:14px}.study-mastery-row .fill{background:linear-gradient(90deg,var(--accent),var(--success))}.study-mastery-row b{color:var(--text-strong);font-variant-numeric:tabular-nums}.study-title-row{min-height:92px;margin:0;padding:17px 20px;align-items:center;border:2px solid var(--border);border-radius:18px;background:var(--bg-elevated);box-shadow:0 4px 0 var(--border)}.study-eyebrow{color:var(--accent-deep);font-weight:900}.focus-name{font-size:clamp(25px,3vw,32px);font-weight:900}.study-total{flex-direction:column;align-items:flex-end;gap:0}.study-total span{color:var(--accent-deep);font-size:13px;font-weight:900}.step-progress{margin-top:17px;padding:0;border:0;background:transparent;box-shadow:none}.step-summary{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.steps{display:flex;grid-template-columns:none;gap:6px}.steps:before{display:none}.step,.step.done,.step.active{display:block;flex:1;min-width:0;height:10px;padding:0;border:0;border-radius:999px;background:var(--bg-subtle);box-shadow:none}.step.done{background:var(--success)}.step.active{flex:2.5;background:var(--accent);box-shadow:0 0 0 3px #1cb0f633}.step-num,.step-label{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.knowledge-contract{margin-top:12px;padding:10px 12px;border:2px solid var(--border);background:var(--bg-elevated)}.chat{padding:18px 0 26px;gap:14px}.bubble{max-width:82%;padding:13px 16px;border-width:2px;font-size:15px}.bubble.tutor{border-radius:4px 20px 20px;box-shadow:0 3px 0 var(--border)}.bubble.user{border:2px solid var(--border);border-radius:20px 4px 20px 20px;background:var(--accent-soft)}.grade-card{border-width:2px;box-shadow:0 4px color-mix(in srgb,currentColor 24%,var(--border))}.grade-card.pass{border-color:var(--success);background:var(--success-soft)}.grade-card.pass .grade-title{color:var(--success-deep)}.action-bar{position:relative;z-index:6;width:100%;padding:14px max(20px,calc((100% - 740px)/2));border-top:2px solid var(--border);background:var(--bg-elevated);box-shadow:0 -4px 16px #1a25350a}.btn-row button{min-height:42px;padding:8px 18px;border-width:2px;font-size:14px;box-shadow:0 4px 0 var(--border-strong)}.composer-modes button{min-height:30px;border:0;box-shadow:none}.ask-row{border:2px solid var(--border);border-radius:14px;box-shadow:0 4px 0 var(--border)}.judge-answer-row{gap:12px}.judge-answer-row .judge-answer{min-height:52px;border-width:2px;font-size:16px;font-weight:900}.judge-answer-row .valid{border-color:var(--success);background:var(--bg-elevated);color:var(--success-deep);box-shadow:0 4px 0 var(--success-deep)}.judge-answer-row .invalid{border-color:var(--danger);background:var(--bg-elevated);color:var(--danger-deep);box-shadow:0 4px 0 var(--danger-deep)}.progress-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-bottom:24px}.progress-stat{min-height:104px;padding:16px 18px;display:flex;flex-direction:column;justify-content:space-between;border:2px solid var(--border);border-radius:16px;background:var(--bg-elevated);box-shadow:0 4px 0 var(--border)}.progress-stat span{color:var(--text-muted);font-size:12px;font-weight:800}.progress-stat strong{font-size:32px;line-height:1;font-weight:900}.progress-stat small{color:var(--text-muted);font-size:16px}.progress-stat.danger strong,.danger-copy{color:var(--danger)}.progress-section:first-of-type{margin-top:0}.chapter-progress{padding:16px}.wrong-row,.queue-row{border-width:2px;box-shadow:0 3px 0 var(--border)}.sprint-summary{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}.sprint-summary>span{padding:7px 13px;border:2px solid var(--border);border-radius:999px;background:var(--bg-elevated);font-size:13px;font-weight:800}.sprint-summary strong{color:var(--accent-deep)}.sprint-summary .danger-copy{color:var(--danger)}.sprint-card{min-height:214px;border:2px solid var(--border);box-shadow:0 4px 0 var(--border)}.sprint-card.attention{border-color:var(--danger);box-shadow:0 4px 0 var(--danger-deep)}.sprint-card.attention>button.primary{background:var(--danger);border-color:var(--danger);box-shadow:0 4px 0 var(--danger-deep)}.sprint-card:hover{background:var(--bg-elevated)}.stage-map .map-main{position:relative}.stage-map .map-toolbar{position:absolute;top:10px;right:16px;z-index:6;min-height:0;padding:0;border:0;background:transparent;pointer-events:none}.stage-map .map-toolbar>div:first-child{display:none}.stage-map .map-actions{pointer-events:auto;padding:4px;border:2px solid var(--border);border-radius:12px;background:#fffffff0;box-shadow:0 3px 0 var(--border)}.stage-map .map-scroll{height:100%}.stage-map .map-canvas path{pointer-events:none}.map-legend{position:absolute;left:18px;bottom:16px;z-index:5;display:flex;flex-wrap:wrap;gap:9px;padding:8px 11px;border:2px solid var(--border);border-radius:12px;background:#fffffff0;box-shadow:0 3px 0 var(--border);color:var(--text-muted);font-size:11px;font-weight:800}.map-legend span{display:inline-flex;align-items:center;gap:5px}.map-legend i{width:9px;height:9px;border-radius:50%}.study-screen .btn-row{flex-wrap:nowrap}.study-screen .btn-row .primary{flex:1}.study-screen .btn-row>button:not(.primary){flex:none}@media(max-width:860px){:root{--nav-width: 0px}.navrail{position:fixed;inset:auto 0 0;z-index:50;width:100%;height:68px;padding:5px 7px;display:flex;flex-direction:row;align-items:center;justify-content:space-around;gap:2px;border:0;border-top:2px solid var(--border);background:var(--bg-elevated)}.brand,.nav-spacer{display:none}.nav-item{width:auto;max-width:68px;min-width:48px;min-height:54px;flex:1}.workspace{padding-bottom:68px}.stage{padding:20px 16px 32px}.stage-map,.stage-study{padding:0}.app-toolbar{padding:0 16px}.site-footer{display:none}.import-dropzone{grid-template-columns:auto 1fr}.dropzone-controls{grid-column:1 / -1}.map-tree{width:210px}.progress-stats,.chapter-grid,.sprint-cards{grid-template-columns:1fr}}@media(prefers-contrast:more){:root{--border: #86a7be;--border-strong: #527993;--text-muted: #3d5568}}@media(max-width:620px){.toolbar-library,.toolbar-separator,.course-context .status-badge,.study-total{display:none}.page-header{flex-direction:column}.page-header-actions,.page-header-actions button{width:100%}.import-dropzone{grid-template-columns:1fr}.dropzone-controls{grid-column:auto}.new-course,.progress-overview{flex-direction:column;align-items:stretch}.new-course button{width:100%}.pipeline-steps{grid-template-columns:repeat(2,1fr)}.next-step-card{grid-template-columns:auto minmax(0,1fr);align-items:start}.next-step-card>.primary{width:100%;grid-column:1 / -1}.ingest-error-attempts li{grid-template-columns:1fr}.map-tree{display:none}.study-head,.chat{width:calc(100% - 24px)}.study-mastery-row{grid-template-columns:1fr auto}.study-mastery-row>span{display:none}.bubble{max-width:94%}.action-bar{padding-inline:12px}.review-controls{flex-wrap:wrap}.review-result-count{width:100%}}.model-profile-picker{margin-top:18px;padding:18px;border:1px solid var(--border-subtle, #ded9cd);border-radius:16px;background:color-mix(in srgb,var(--bg-elevated, #fff) 84%,var(--accent-soft, #eef4ff))}.model-profile-heading,.model-cache-toggle,.chapter-report-card,.question-job-pending,.contract-review-debt{display:flex;align-items:flex-start;gap:10px}.model-profile-heading>span,.chapter-report-icon{display:grid;place-items:center;flex:0 0 auto;width:34px;height:34px;border-radius:10px;color:var(--accent, #3868d6);background:var(--accent-soft, #edf2ff)}.model-profile-heading h3,.workshop-chapter-preparation h3{margin:0;font-size:15px}.model-profile-heading p,.model-profile-heading small,.model-cache-toggle small,.tutor-selection>small{display:block;margin:3px 0 0;color:var(--text-muted, #716d63);font-size:12px;line-height:1.5}.model-presets{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:14px}.model-presets button{min-height:62px;padding:10px 12px;text-align:left}.model-presets b,.model-presets small{display:block}.model-presets small{margin-top:3px;color:var(--text-muted, #716d63);font-size:11px}.model-profile-grid{display:grid;gap:10px;margin-top:14px}.model-selection-fields{display:grid;grid-template-columns:minmax(180px,1fr) minmax(150px,.65fr);gap:10px}.model-selection-fields label>span{display:block;margin-bottom:5px;color:var(--text-muted, #716d63);font-size:12px;font-weight:700}.model-selection-fields select{width:100%;min-height:42px}.model-cache-toggle{margin-top:14px;padding:11px 12px;border-radius:12px;background:var(--bg-subtle, #f7f5ef);cursor:pointer}.model-cache-toggle input{margin-top:4px}.model-cache-toggle span>svg,.model-cache-toggle span>b{vertical-align:middle}.model-cache-toggle span>svg{margin-right:6px}.model-policy-warning{display:flex;gap:7px;margin-top:10px;color:var(--status-warning, #946700);font-size:12px}.model-policy-bounds,.model-policy-economy{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:14px}.model-policy-bounds>div,.model-faq-depth{padding:11px 12px;border-radius:12px;background:var(--bg-subtle, #f7f5ef)}.model-policy-bounds b,.model-faq-depth>span{display:block;margin-bottom:8px;font-size:12px}.model-bound-options{display:flex;flex-wrap:wrap;gap:7px 12px}.model-bound-options label{display:inline-flex;align-items:center;gap:5px;color:var(--text-muted, #716d63);font-size:11px}.model-policy-economy .model-cache-toggle{margin-top:0}.model-faq-depth select{width:100%;min-height:42px}.workshop-chapter-preparation{margin-top:18px;padding-top:18px;border-top:1px solid var(--border-subtle, #ded9cd)}.chapter-preparation-list{display:grid;gap:9px;margin:10px 0 0;padding:0;list-style:none}.chapter-preparation-row{display:grid;grid-template-columns:30px minmax(0,1fr) auto;gap:11px;align-items:start;padding:12px;border:1px solid var(--border-subtle, #ded9cd);border-radius:13px;background:var(--bg-elevated, #fff)}.chapter-preparation-row.available{border-color:color-mix(in srgb,var(--status-mastered, #2e9b68) 38%,transparent)}.chapter-preparation-icon{display:grid;place-items:center;width:28px;height:28px;border-radius:9px;color:var(--text-muted, #716d63);background:var(--bg-subtle, #f7f5ef)}.chapter-preparation-row.available .chapter-preparation-icon{color:var(--status-mastered, #2e9b68)}.chapter-preparation-row.generating_cards .chapter-preparation-icon svg,.chapter-preparation-row.generating_faqs .chapter-preparation-icon svg,.chapter-preparation-row.generating_checks .chapter-preparation-icon svg,.chapter-preparation-row.quality_gate .chapter-preparation-icon svg{animation:spin 1.2s linear infinite}.chapter-preparation-copy>div:first-child{display:flex;align-items:baseline;gap:8px}.chapter-preparation-copy>div:first-child span,.chapter-preparation-copy>small{color:var(--text-muted, #716d63);font-size:11px}.chapter-preparation-copy .bar{margin:8px 0 5px}.chapter-preparation-action{display:flex;flex-direction:column;align-items:flex-end;gap:7px}.chapter-quality-issues{margin:7px 0 0;padding-left:17px;color:var(--status-danger, #b94a3e);font-size:11px}.preset-question-chips{margin-bottom:10px}.preset-question-chips>span{display:block;margin-bottom:6px;color:var(--text-muted, #716d63);font-size:11px;font-weight:700}.preset-question-chips>div{display:flex;gap:7px;overflow-x:auto;padding-bottom:3px}.preset-question-chips button{display:inline-flex;flex:0 0 auto;align-items:center;gap:6px;min-height:38px;max-width:280px;white-space:normal;text-align:left}.question-job-list{display:grid;gap:10px;margin:12px 0}.question-job{max-width:min(720px,88%);padding:13px 14px;border:1px solid var(--border-subtle, #ded9cd);border-radius:14px;background:var(--bg-subtle, #f7f5ef)}.question-job header{display:flex;justify-content:space-between;gap:12px}.question-job header b,.question-job header span{display:block}.question-job header b,.question-job-answer>small{color:var(--text-muted, #716d63);font-size:11px}.question-job-answer{margin-top:10px;padding-top:10px;border-top:1px solid var(--border-subtle, #ded9cd)}.question-job-pending,.question-job-error{margin:10px 0 0;color:var(--text-muted, #716d63);font-size:12px}.question-job-error,.chapter-report-error{color:var(--status-danger, #b94a3e)}.tutor-policy-details{margin:8px 0 10px;padding:9px 11px;border:1px solid var(--border-subtle, #ded9cd);border-radius:11px}.tutor-policy-details summary{cursor:pointer;font-size:12px;font-weight:700}.tutor-selection{margin:10px 0 0;padding:10px;border:0;border-radius:10px;background:var(--bg-subtle, #f7f5ef)}.tutor-selection legend{padding:0 4px;font-size:12px;font-weight:800}.contract-review-debt{margin-top:9px;padding:9px 11px;border-radius:10px;color:var(--status-warning, #946700);background:color-mix(in srgb,#f5c85c 16%,transparent);font-size:12px;line-height:1.5}.chapter-report-card{align-items:center;margin-top:13px;padding:12px;border:1px solid var(--border-subtle, #ded9cd);border-radius:13px;background:var(--bg-subtle, #f7f5ef)}.chapter-report-copy{flex:1 1 auto;min-width:0}.chapter-report-copy b,.chapter-report-copy span,.chapter-report-copy small{display:block}.chapter-report-copy span,.chapter-report-copy small{margin-top:3px;color:var(--text-muted, #716d63);font-size:11px;line-height:1.45}.progress-stats{grid-template-columns:repeat(4,minmax(0,1fr))}.progress-stat.warning strong{color:var(--status-warning, #946700)}.chapter-line>div:last-child{display:flex;align-items:center;gap:9px}.tree-ch-title{display:flex;justify-content:space-between;gap:8px}.tree-ch-title small{color:var(--text-muted, #716d63);font-size:10px;font-weight:600}@media(max-width:760px){.model-presets,.model-selection-fields,.model-policy-bounds,.model-policy-economy,.progress-stats{grid-template-columns:1fr}.chapter-preparation-row{grid-template-columns:28px minmax(0,1fr)}.chapter-preparation-action{grid-column:2;flex-direction:row;align-items:center;justify-content:flex-start}.chapter-report-card{align-items:flex-start;flex-wrap:wrap}.chapter-report-card>button{margin-left:44px}}.course-card{display:grid;grid-template-columns:minmax(0,1fr) 44px;align-items:start;gap:0;padding:12px 8px 14px 16px}.course-card-open{display:flex;flex-direction:column;align-items:stretch;width:100%;min-height:148px;min-width:0;padding:4px 8px 2px 0;border:0;background:transparent;color:inherit;text-align:left;cursor:pointer;box-shadow:none}.course-card-open:hover,.course-card-open:active{transform:none;box-shadow:none;background:transparent}.course-card-delete{width:36px;height:36px;min-height:36px;margin-top:2px;padding:0;display:grid;place-items:center;border:0;border-radius:10px;background:transparent;color:var(--text-muted);box-shadow:none}.course-card-delete:hover:not(:disabled),.course-card-delete:focus-visible{color:var(--danger);background:var(--danger-soft);transform:none;box-shadow:none}button.danger{color:#fff;background:var(--danger);border-color:color-mix(in srgb,var(--danger) 70%,#8d1f1f);box-shadow:0 3px color-mix(in srgb,var(--danger) 55%,#8d1f1f)}button.danger:hover:not(:disabled){background:color-mix(in srgb,var(--danger) 88%,#8d1f1f)}.confirm-dialog-backdrop{position:fixed;inset:0;z-index:40;display:grid;place-items:center;padding:24px;background:color-mix(in srgb,#123047 38%,transparent)}.confirm-dialog{width:min(440px,100%);padding:22px 22px 18px;border:2px solid var(--border);border-radius:18px;background:var(--bg-elevated);box-shadow:0 18px 50px #0f28462e}.confirm-dialog h2{margin:0;color:var(--text-strong);font-size:18px}.confirm-dialog p{margin:10px 0 0;color:var(--text-muted);font-size:13px;line-height:1.55}.confirm-dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:18px}.job-log-panel{max-width:100%;overflow:hidden;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg-elevated);box-shadow:var(--shadow-card)}.workshop-main-column>.job-log-panel,.import-screen>.job-log-panel{margin-top:16px}.job-log-head,.settings-section.job-log-settings .job-log-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;padding:14px 16px 12px;border-bottom:1px solid var(--border-soft, var(--border))}.job-log-head h2{margin:0;color:var(--text-strong);font-size:15px}.job-log-head p{margin:4px 0 0;color:var(--text-muted);font-size:12px;line-height:1.45}.job-log-live{flex:none;min-height:24px;padding:3px 8px;border-radius:999px;background:var(--bg-subtle);color:var(--text-muted);font-size:11px;font-weight:700}.job-log-live.on{color:var(--accent-deep, var(--accent));background:var(--accent-soft)}.job-log-scroller{max-width:100%;max-height:360px;overflow-x:hidden;overflow-y:auto;padding:8px 0;background:color-mix(in srgb,var(--bg-subtle) 55%,var(--bg-elevated))}.job-log-empty{display:flex;align-items:flex-start;gap:10px;padding:18px 16px;color:var(--text-muted);font-size:13px;line-height:1.5}.job-log-empty p{margin:0}.job-log-line{max-width:100%;overflow:hidden;border-left:3px solid transparent}.job-log-line+.job-log-line{border-top:1px solid color-mix(in srgb,var(--border) 55%,transparent)}.job-log-panel .job-log-toggle,.job-log-toggle.static{display:grid;grid-template-columns:64px 48px minmax(0,1fr) 28px;align-items:start;gap:8px;width:100%;min-height:44px;margin:0;padding:10px 16px;border:0;border-radius:0;background:transparent;box-shadow:none;color:inherit;font:inherit;text-align:left;overflow:hidden}.job-log-toggle.static{grid-template-columns:64px 48px minmax(0,1fr);cursor:default}.job-log-panel .job-log-toggle{cursor:pointer}.job-log-panel .job-log-toggle:hover:not(:disabled){background:color-mix(in srgb,var(--bg-hover) 70%,transparent);border-color:transparent;box-shadow:none}.job-log-panel .job-log-toggle:active:not(:disabled){transform:none;box-shadow:none}.job-log-line time{color:var(--text-faint, var(--text-muted));font:11px/1.6 ui-monospace,SFMono-Regular,Menlo,monospace}.job-log-kind{height:fit-content;padding:1px 6px;border-radius:999px;background:var(--bg-elevated);color:var(--text-muted);font-size:10px;font-weight:800;letter-spacing:.02em;white-space:nowrap}.job-log-copy{min-width:0;overflow:hidden}.job-log-copy b,.job-log-copy small{display:block;overflow-wrap:anywhere;word-break:break-word}.job-log-copy b{color:var(--text);font-size:13px;font-weight:650;line-height:1.45}.job-log-copy small{margin-top:2px;color:var(--text-secondary, var(--text-muted));font-size:11px}.job-log-chevron{display:grid;place-items:center;width:28px;height:28px;margin-top:2px;color:var(--text-faint, var(--text-muted));transition:transform var(--motion-fast) var(--ease-out)}.job-log-chevron.open{transform:rotate(180deg)}.job-log-detail{display:grid;gap:6px;max-width:100%;margin:0;padding:0 16px 12px;overflow:hidden}.job-log-detail>div{display:grid;grid-template-columns:64px minmax(0,1fr);gap:8px 12px;min-width:0}.job-log-detail dt,.job-log-detail dd{min-width:0;margin:0;overflow-wrap:anywhere;word-break:break-word}.job-log-detail dt{color:var(--text-faint, var(--text-muted));font-size:11px;font-weight:700}.job-log-detail dd{color:var(--text);font-size:12px}.job-log-line.warning{border-left-color:var(--status-warning, #e6a817);background:color-mix(in srgb,#fff6dd 70%,transparent)}.job-log-line.error{border-left-color:var(--danger);background:color-mix(in srgb,var(--danger-soft) 55%,transparent)}.job-log-line.running{border-left-color:var(--accent)}.job-log-kind.agent,.job-log-kind.step{color:var(--purple, #7b4b9a)}.job-log-kind.heartbeat{color:var(--accent-deep, var(--accent))}.job-log-kind.error{color:var(--danger)}.job-log-kind.cancel,.job-log-kind.retry{color:var(--status-warning, #946700)}.job-log-kind.publish{color:var(--success)}.settings-section.job-log-settings{padding-bottom:0}.settings-section.job-log-settings .job-log-panel{border:0;border-radius:0;box-shadow:none}@media(max-width:760px){.job-log-panel .job-log-toggle,.job-log-toggle.static{grid-template-columns:56px minmax(0,1fr) 28px}.job-log-toggle.static{grid-template-columns:56px minmax(0,1fr)}.job-log-kind{grid-column:2}.job-log-copy{grid-column:1 / -1}.job-log-chevron{grid-column:3;grid-row:1}.job-log-detail>div{grid-template-columns:minmax(0,1fr);gap:2px}.confirm-dialog-actions{flex-direction:column-reverse}.confirm-dialog-actions button{width:100%}}@media(max-width:390px){.job-log-panel,.job-log-scroller,.job-log-line,.job-log-panel .job-log-toggle,.job-log-toggle.static,.job-log-detail,.job-log-copy{max-width:100%;overflow-x:hidden}.job-log-head{flex-wrap:wrap;gap:8px}.job-log-panel .job-log-toggle,.job-log-toggle.static{padding-inline:12px}}.stage-map .map-canvas rect:first-of-type{filter:none}.stage-map .map-scroll{contain:layout paint}button{line-height:1.4}.toolbar-actions,.page-header-actions{gap:12px}.diagnostic-drawer-head{flex-shrink:0;background:var(--bg-elevated)}.diagnostic-drawer-head button{width:44px;min-height:44px;flex:none}.answer-reference-dialog>header,.answer-reference-dialog>footer{flex-shrink:0}.answer-reference-dialog>footer button{min-height:44px;padding:12px 20px;white-space:normal}.confirm-dialog-actions{gap:12px;flex-wrap:wrap}.confirm-dialog-actions button{min-height:44px;padding:10px 18px}.agent-activity-header{flex-shrink:0}.agent-activity-header button{min-width:44px;min-height:44px;flex-shrink:0}.local-agent-connection-status{display:flex;align-items:center;gap:10px;font-weight:650}.local-agent-connection-status .agent-status-dot{flex:0 0 auto}.local-agent-connection-status .agent-status-dot.failed{background:#c94a4a;box-shadow:0 0 0 4px #c94a4a22}.connection-failed .local-agent-connection-status{color:var(--text)}.study-screen{display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,1fr) auto auto;grid-template-areas:"reading" "notices" "actions";min-height:0}.study-reading{grid-area:reading;min-height:0;min-width:0;overflow-y:auto;overscroll-behavior:contain}.study-reading .study-head{max-height:none;overflow:visible}.study-reading .chat{overflow:visible;height:auto;min-height:180px;padding-block:20px}.study-reading>.chat{grid-area:chat;min-height:0;overflow-y:auto;overflow-wrap:anywhere}.study-notices{grid-area:notices;min-width:0}.study-notices:empty{display:none}.study-screen>.action-bar{grid-area:actions;max-height:38dvh;overflow-y:auto}.study-continue-row{display:flex;justify-content:space-between;align-items:center;gap:16px;width:100%}.study-continue-row>span{color:var(--text-muted)}.study-continue-row>button{flex-shrink:0;margin-left:auto;min-height:44px;padding:10px 22px}.study-answer-panel{grid-area:answers;min-width:0;min-height:0;padding:20px;overflow-y:auto;overscroll-behavior:contain;background:var(--bg-elevated);border-left:2px solid var(--border)}.study-answer-panel h2{margin:0 0 16px;font-size:18px}.study-answer-panel .choice-answer-list{display:flex;flex-direction:column;gap:12px}.study-answer-panel .choice-answer{width:100%;min-height:48px;padding:14px 16px;white-space:normal;overflow-wrap:anywhere;text-align:left}.study-with-choices{grid-template-columns:minmax(0,1fr) minmax(280px,34%);grid-template-areas:"reading answers" "notices notices" "actions actions"}.study-with-choices .study-head,.study-with-choices .chat{width:calc(100% - 40px)}.study-with-choices .action-bar{padding-inline:20px}@media(max-width:860px){.stage-study{overflow-y:auto;overscroll-behavior-y:contain}.study-screen,.study-with-choices{height:auto;min-height:100%;display:flex;flex-direction:column}.study-reading{flex:1 0 auto;overflow:visible}.study-head{max-height:none;overflow:visible;flex:none}.study-reading>.chat{min-height:180px;flex:1 0 auto;overflow:visible;padding-bottom:20px}.study-head,.study-reading>.chat,.study-with-choices .study-head,.study-with-choices .chat{width:calc(100% - 28px)}.study-answer-panel{flex:none;overflow:visible;border-left:0;border-top:2px solid var(--border);padding:18px 14px}.study-screen>.action-bar{max-height:none;overflow:visible;padding:14px}.action-bar .btn-row{display:flex;flex-wrap:wrap;gap:12px}.action-bar .btn-row button{min-height:44px;padding:10px 14px;white-space:normal;flex:1 1 140px}.action-bar .ask-row{display:flex;flex-wrap:wrap;gap:12px}.action-bar textarea{width:100%;flex:1 1 100%;min-width:0;font-size:16px}.action-bar .composer-send{min-height:44px;margin-left:auto}.jump-latest{display:none}.navrail{height:calc(68px + env(safe-area-inset-bottom));padding-bottom:calc(5px + env(safe-area-inset-bottom))}.workspace{padding-bottom:calc(68px + env(safe-area-inset-bottom));min-width:0}.app-toolbar{height:auto;min-height:64px;flex-wrap:wrap;gap:8px;padding:10px 14px}.toolbar-location,.toolbar-actions{min-width:0;max-width:100%}.toolbar-actions{flex-wrap:wrap;gap:8px}.course-context{max-width:min(60vw,260px);overflow:hidden;text-overflow:ellipsis}.stage,.page-header,.page-header-actions{min-width:0}.page-header-actions{flex-wrap:wrap;gap:12px}.stage button,dialog button{min-height:44px}.stage input,.stage select,.stage textarea,dialog input,dialog select,dialog textarea{font-size:16px;max-width:100%}.course-grid,.library-grid{grid-template-columns:minmax(0,1fr)}.course-card,.textbook-record{min-width:0;overflow-wrap:anywhere}.account-dialog,.answer-reference-dialog{max-width:calc(100vw - 20px);max-height:calc(100dvh - 24px)}.account-dialog>header,.answer-reference-dialog>header{gap:12px;padding:16px}.account-dialog>header>button,.answer-reference-dialog>header>button{flex:0 0 auto}.account-dialog-body{padding:16px;min-width:0}.account-dialog-body .btn-row{gap:12px;flex-wrap:wrap}.md{overflow-wrap:anywhere;min-width:0}.md pre,.md .katex-display{max-width:100%;overflow-x:auto}}.study-answer-panel .choice-answer{justify-content:flex-start}@media(min-width:861px){.study-with-choices .jump-latest{right:calc(34% + 20px)}}@media(max-width:620px){.map-toolbar{flex-wrap:wrap;gap:12px;padding:14px}.map-toolbar>div{min-width:0}.map-actions{flex-wrap:wrap;gap:10px}.map-legend{flex-wrap:wrap;gap:8px 12px;padding:10px 14px}}@media(max-width:860px){.app-toolbar .toolbar-actions{display:flex;flex:0 0 100%;width:100%;flex-wrap:nowrap;justify-content:flex-start;overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:none;padding:2px 0 7px}.app-toolbar .toolbar-actions::-webkit-scrollbar,.open-lesson>nav::-webkit-scrollbar{display:none}.app-toolbar .toolbar-actions>button,.app-toolbar .toolbar-actions>.app-mode-switch{flex:0 0 auto;white-space:nowrap}.open-lesson>nav{display:flex;flex-wrap:nowrap;max-width:100%;min-width:0;overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:none;gap:10px;padding-bottom:8px}.open-lesson>nav>button{flex:0 0 auto;white-space:nowrap}}.app-toolbar{min-width:0}.toolbar-location{flex:0 1 320px;min-width:0}.toolbar-screen{white-space:nowrap;flex-shrink:0}.course-context{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.app-toolbar .toolbar-actions{display:flex;flex:1 1 0;min-width:0;flex-wrap:nowrap;overflow-x:auto;justify-content:flex-start;padding-bottom:6px;scrollbar-width:none}.app-toolbar .toolbar-actions>button,.app-toolbar .toolbar-actions>.app-mode-switch{flex-shrink:0;white-space:nowrap}.study-answer-panel .judge-answer-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.study-answer-panel .judge-answer{min-height:48px;padding:12px 18px}@media(max-width:860px){.toolbar-location,.app-toolbar .toolbar-actions{flex:0 0 100%}}@media(min-width:861px){.study-reading .study-head,.study-reading .chat{width:calc(100% - 40px);max-width:900px;margin-left:20px;margin-right:20px}.study-with-choices .study-reading .study-head,.study-with-choices .study-reading .chat{max-width:none}.study-reading .bubble.tutor{width:100%;max-width:100%}.study-screen>.action-bar{padding-inline:20px}}.open-lesson>nav{display:flex;flex-wrap:nowrap;min-width:0;max-width:100%;overflow-x:auto;overscroll-behavior-x:contain;gap:10px;padding-bottom:8px;scrollbar-width:none}.open-lesson>nav>button{flex:0 0 auto;white-space:nowrap}@media(min-width:861px){.stage-study{overflow:hidden}}.stage-community{overflow-y:auto;padding:0 28px 32px}.community-page{width:100%;max-width:1440px;margin-inline:auto;min-width:0}.community-head{position:sticky;top:0;z-index:5;padding:24px 0 16px;background:var(--bg-canvas);border-bottom:1px solid var(--border);margin-bottom:20px}.community-head h1{margin:0 0 6px;font-size:28px}.community-head p{color:var(--text-muted);margin:8px 0}.community-search{display:block;margin-top:18px}.community-search>span{display:block;margin-bottom:8px;font-weight:700}.community-search>div{display:flex;gap:10px;align-items:center}.community-search input{flex:1;min-width:0;min-height:52px;padding:12px 16px;font-size:16px;border:2px solid var(--border);border-radius:14px;background:var(--bg-elevated);color:var(--text)}.community-search input:focus{outline:3px solid var(--accent);outline-offset:2px}.community-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin:24px 0}.community-card{min-width:0;display:flex;flex-direction:column;align-items:stretch;gap:14px;padding:20px;border:2px solid var(--border);border-radius:20px;background:var(--bg-elevated)}.community-book-mark{min-height:64px;display:flex;align-items:center;border-left:5px solid var(--accent);padding:16px;border-radius:8px;color:var(--text-muted);background:var(--bg-canvas);font-weight:700}.community-card-copy{flex:1}.community-card h3{margin:0 0 12px;font-size:18px;line-height:1.6;overflow-wrap:anywhere}.community-card p{color:var(--text-muted);line-height:1.6;margin:0}.community-card button{min-height:44px;padding:10px 14px;white-space:normal}.community-card.example-course{border-color:#dab74c}.community-empty{padding:40px 16px;text-align:center;color:var(--text-muted)}.community-share{padding:20px;border:1px solid var(--border);border-radius:16px}.community-share summary{cursor:pointer;font-weight:700}@media(max-width:860px){.stage-community{padding:0 16px 24px}.community-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.navrail{justify-content:flex-start;overflow-x:auto;scrollbar-width:none}.navrail .nav-item{flex:0 0 58px}}@media(max-width:520px){.community-grid{grid-template-columns:minmax(0,1fr)}.community-head{padding-top:16px}.community-head h1{font-size:24px}}@media(max-width:860px){.shell .app-toolbar{display:flex;flex-wrap:nowrap;align-items:center;height:64px;min-height:64px;max-height:64px;gap:10px;padding:6px 12px;flex-shrink:0;overflow-x:auto;overflow-y:hidden;touch-action:pan-x;overscroll-behavior:contain none;scrollbar-width:none}.shell .app-toolbar::-webkit-scrollbar{display:none}.shell .app-toolbar .toolbar-location{flex:0 0 auto;max-width:180px;white-space:nowrap}.shell .app-toolbar .toolbar-actions{display:contents}.shell .app-toolbar .toolbar-actions>button,.shell .app-toolbar .app-mode-switch{flex:0 0 auto;white-space:nowrap}}.ai-thinking-status{display:flex;align-items:center;flex-wrap:wrap;gap:8px 16px;padding:12px 20px;color:var(--text)}.ai-thinking-text{font-weight:700;animation:ai-thinking-breathe 1.8s ease-in-out infinite}.ai-thinking-status small{color:var(--text-muted)}.question-job-pending .ai-thinking-status{padding:4px 0}@keyframes ai-thinking-breathe{0%,to{opacity:1}50%{opacity:.45}}@media(prefers-reduced-motion:reduce){.ai-thinking-text{animation:none}}@media(max-width:860px){.shell .app-toolbar .toolbar-actions>button{box-sizing:border-box;height:44px;min-height:44px;max-height:44px;margin-block:0;padding-block:8px}.shell .app-toolbar .app-mode-switch{box-sizing:border-box;height:44px;min-height:44px;max-height:44px;padding:2px;margin-block:0}.shell .app-toolbar .app-mode-switch>button{box-sizing:border-box;height:36px;min-height:36px;padding-block:4px}}.study-right-rail{grid-area:answers;min-width:0;min-height:0;overflow-y:auto;border-left:2px solid var(--border);background:var(--bg-elevated)}.study-right-rail>.study-answer-panel{border-left:0;overflow:visible}.study-question-panel{min-width:0;background:var(--bg-elevated)}.study-question-head{position:sticky;top:0;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px;background:var(--bg-elevated);border-bottom:1px solid var(--border)}.study-question-head h2{margin:0 0 6px;font-size:20px}.study-question-head small{color:var(--text-muted)}.study-question-head button{flex:0 0 auto;min-height:44px;padding:10px 14px}.study-question-body{padding:16px;overflow-wrap:anywhere}.study-question-body .question-job-list{margin:0;gap:16px}.study-question-body .question-job{width:100%;box-sizing:border-box;margin:0;padding:16px}.study-question-body .question-job header{gap:12px}.question-panel-empty{color:var(--text-muted);line-height:1.7}@media(max-width:860px){.study-right-rail{overflow:visible;border-left:0}.study-question-panel{position:fixed;z-index:120;inset:0 0 0 auto;width:min(440px,100%);display:flex;flex-direction:column;box-shadow:-12px 0 40px #0003;padding-top:env(safe-area-inset-top);padding-bottom:env(safe-area-inset-bottom);box-sizing:border-box}.study-question-head{flex:0 0 auto;position:relative}.study-question-body{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain}}.question-thread{display:flex;flex-direction:column;gap:12px;padding-bottom:20px;border-bottom:1px solid var(--border)}.question-followup{padding:4px 0}.question-followup form,.question-followup label{display:flex;flex-direction:column;gap:12px}.question-followup textarea{box-sizing:border-box;width:100%;min-height:96px;padding:12px;font-size:16px;border:1px solid var(--border);border-radius:12px;background:var(--bg-elevated);color:var(--text)}.question-followup form>div{display:flex;flex-wrap:wrap;gap:12px}.question-followup button{min-height:44px;padding:10px 16px}.favorite-star{display:inline-grid;flex:0 0 44px;width:44px;height:44px;place-items:center;padding:0;color:var(--text-muted);background:var(--bg-elevated);border:2px solid var(--border);border-radius:12px;transition:color .15s ease,border-color .15s ease,background .15s ease,transform .15s ease}.favorite-star:hover:not(:disabled){color:var(--warning-ink);border-color:var(--warning)}.favorite-star.is-favorite{color:var(--warning-ink);border-color:var(--warning);background:var(--warning-soft)}.favorite-star:active:not(:disabled){transform:translateY(2px)}.bubble.tutor.has-favorite{position:relative;padding-right:52px}.bubble-favorite{position:absolute;top:8px;right:9px;width:32px;height:32px;min-height:32px;padding:0;display:grid;place-items:center;color:var(--text-muted);border:1px solid transparent;border-radius:9px;background:transparent;box-shadow:none}.bubble-favorite:after{content:"";position:absolute;inset:-6px}.stage .bubble-favorite{min-height:32px;height:32px}.bubble-favorite:hover:not(:disabled){color:var(--warning-ink);border-color:var(--warning);background:var(--warning-soft)}.bubble-favorite.is-favorite{color:var(--warning-ink);border-color:var(--warning);background:var(--warning-soft)}.bubble-favorite:active:not(:disabled){transform:scale(.94);box-shadow:none}.question-job.is-focused,.bubble.is-focused{animation:favorite-focus .9s ease-out 2;border-color:var(--warning)}.question-location{display:block;margin:3px 0 6px;color:var(--text-muted);line-height:1.4}.stage-favorites{overflow-y:auto;padding:0 28px 32px}.favorites-page{width:100%;max-width:1000px;margin-inline:auto}.favorites-head{padding:28px 0 18px;border-bottom:1px solid var(--border)}.favorites-head h1{margin:0 0 6px;font-size:28px}.favorites-head p{margin:0;color:var(--text-muted)}.favorites-list{display:grid;gap:20px;padding:24px 0}.favorite-card{padding:20px;border:2px solid var(--border);border-radius:18px;background:var(--bg-elevated);box-shadow:var(--shadow-card)}.favorite-card>header{display:flex;align-items:flex-start;justify-content:space-between;gap:18px}.favorite-card>header>div{min-width:0}.favorite-card>header span{color:var(--text-muted);font-size:12px;font-weight:700}.favorite-card h2{margin:5px 0 0;font-size:20px;line-height:1.45;overflow-wrap:anywhere}.favorite-location{margin:14px 0;color:var(--warning-ink);font-weight:700}.favorite-answer{max-height:250px;overflow:hidden;position:relative;line-height:1.7}.favorite-answer:after{content:"";position:absolute;inset:auto 0 0;height:54px;background:linear-gradient(transparent,var(--bg-elevated));pointer-events:none}.favorite-card>footer{display:flex;justify-content:flex-end;margin-top:18px}.favorite-card>footer button{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:10px 16px}.favorites-empty{margin:36px 0;padding:36px 20px;text-align:center;color:var(--text-muted);border:2px dashed var(--border);border-radius:18px}.favorites-empty h2{margin:12px 0 6px;color:var(--text)}.favorites-empty p{margin:0}.favorites-error{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:20px;padding:14px;color:var(--status-danger);background:var(--danger-soft);border-radius:12px}@keyframes favorite-focus{0%,to{box-shadow:none}45%{box-shadow:0 0 0 4px color-mix(in srgb,var(--warning) 34%,transparent)}}@media(max-width:860px){.stage-favorites{padding:0 16px calc(88px + env(safe-area-inset-bottom))}.favorites-head{padding-top:18px}.favorites-head h1{font-size:24px}.favorite-card{padding:16px}.favorite-card h2{font-size:18px}}@media(prefers-reduced-motion:reduce){.question-job.is-focused,.bubble.is-focused{animation:none}.favorite-star,.bubble-favorite{transition:none}}.guided-tour{position:fixed;inset:0;z-index:1000;overflow:hidden}.guided-tour-highlight{position:fixed;z-index:1;border:3px solid #fff;border-radius:18px;background:transparent;box-shadow:0 0 0 5px #1cb0f6cc,0 0 0 9999px #112435b3;pointer-events:none;transition:top .24s var(--ease-out),left .24s var(--ease-out),width .24s var(--ease-out),height .24s var(--ease-out)}.guided-tour-card{position:fixed;z-index:2;width:min(360px,calc(100vw - 24px));padding:20px;border:2px solid var(--border);border-radius:18px;background:var(--bg-elevated);box-shadow:0 6px 0 var(--accent-deep),0 20px 50px #09233647;color:var(--text);transition:top .24s var(--ease-out),left .24s var(--ease-out)}.guided-tour-card-head{display:flex;align-items:center;justify-content:space-between;color:var(--accent-deep);font-size:12px;font-weight:900}.guided-tour-close{width:32px;min-height:32px;padding:0;border-color:transparent;background:transparent;box-shadow:none;color:var(--text-muted)}.guided-tour-card h2{margin:10px 0 6px;color:var(--text-strong);font-size:22px;line-height:1.25;font-weight:900;letter-spacing:-.015em}.guided-tour-card p{margin:0;color:var(--text-muted);font-size:14px;line-height:1.65}.guided-tour-progress{display:flex;gap:6px;margin:18px 0}.guided-tour-progress span{height:7px;flex:1;border-radius:999px;background:var(--border)}.guided-tour-progress span.done{background:var(--success)}.guided-tour-progress span.active{flex:1.8;background:var(--accent)}.guided-tour-actions{display:flex;justify-content:space-between;gap:10px}.guided-tour-actions button{min-width:112px}.guided-tour-previous:disabled{visibility:hidden}.toolbar-help{min-height:32px;padding:3px 8px;border-color:transparent;background:transparent;box-shadow:none;color:var(--text-muted);font-size:12px}.toolbar-actions{display:flex;flex:0 0 auto;align-items:center;gap:4px}@media(max-width:620px){.guided-tour-card{padding:18px}.guided-tour-card h2{font-size:20px}.toolbar-help span{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.toolbar-help{min-width:44px;min-height:44px}}@media(prefers-reduced-motion:reduce){.guided-tour-highlight,.guided-tour-card{transition:none}}:root{--map-edge: #a9a394;--status-warning: var(--warning);--status-danger: var(--danger)}:root[data-theme=dark]{color-scheme:dark;--bg-app: #101820;--bg-canvas: #111b25;--bg-elevated: #1b2836;--bg-subtle: #223243;--bg-hover: #2b3e51;--text-strong: #edf3fa;--text: #dce5ef;--text-muted: #aebed0;--text-faint: #91a5bc;--border: #34485d;--border-strong: #48617b;--accent: #60c8ff;--accent-hover: #93dbff;--accent-deep: #7ad1ff;--accent-soft: #163b50;--action: #0879a7;--action-hover: #086187;--info: #60c8ff;--info-ink: #8bd5ff;--info-soft: #163b50;--success: #88ce66;--success-deep: #a0df80;--success-ink: #a0df80;--success-soft: #213d2c;--warning: #f4c563;--warning-ink: #f4cf87;--warning-soft: #443820;--danger: #ff9095;--danger-deep: #f87b85;--danger-soft: #482a34;--purple: #c4a0ed;--purple-ink: #d5b8f5;--purple-soft: #382d4a;--status-locked: #6d8299;--status-ready: #60c8ff;--status-verifying: #c4a0ed;--status-active: #f4c563;--status-repair: #ffad7c;--status-mastered: #88ce66;--status-review: #ff9095;--map-edge: #748ba3;--shadow-float: 0 14px 40px rgb(0 0 0 / 35%)}.toolbar-theme{width:34px;min-width:34px;height:34px;padding:0;display:inline-grid;place-items:center;flex:none;background:var(--bg-elevated);color:var(--text-muted);border:1px solid var(--border);border-radius:10px;box-shadow:none}.map-scroll{overscroll-behavior:contain}.map-canvas{overflow:hidden;overflow:clip}.map-canvas svg{position:absolute;top:0;left:0;transition:none}.map-gesture-hint{width:100%;color:var(--text-muted);font-size:11px}.map-legend{pointer-events:none}:root[data-theme=dark] .eyebrow{color:var(--accent)}:root[data-theme=dark] .review-full-extension-note,:root[data-theme=dark] .draft-extension-badge,:root[data-theme=dark] .workshop-safety-note{color:var(--purple-ink)}:root[data-theme=dark] .contract-baseline b,:root[data-theme=dark] .contract-terms dt,:root[data-theme=dark] .sprint-msg,:root[data-theme=dark] .tree-node:hover{color:var(--accent-deep)}:root[data-theme=dark] .review-quality-error small{color:var(--warning-ink)}:root[data-theme=dark] .ask-row .composer-send{background:var(--action);border-color:var(--action)}:root[data-theme=dark] .draft-step-number,:root[data-theme=dark] .draft-check-number{color:var(--bg-app)}:root[data-theme=dark] .review-controls{background:var(--bg-canvas)}:root[data-theme=dark] .map-actions,:root[data-theme=dark] .map-legend{background:var(--bg-elevated)}:root[data-theme=dark] .judge-answer.valid,:root[data-theme=dark] .judge-answer.invalid{color:var(--text-strong)}:root[data-theme=dark] .job-log-line.warning{background:var(--warning-soft)}:root[data-theme=dark] .confirm-dialog-actions .danger,:root[data-theme=dark] .sprint-card.attention>button.primary{background:#a82e43;border-color:#c24a5c;color:#fff}.answer-reference-dialog{position:fixed;inset:0;margin:auto;width:min(720px,calc(100vw - 40px));max-height:min(84vh,900px);padding:0;border:1px solid var(--border);border-radius:22px;background:var(--bg-elevated);color:var(--text-strong);box-shadow:0 24px 80px #0005}.answer-reference-dialog[open]{display:flex;flex-direction:column}.answer-reference-dialog::backdrop{background:#10182799}.answer-reference-dialog header{padding:24px 28px 16px;border-bottom:1px solid var(--border)}.answer-reference-dialog h2{margin:0 0 8px;font-size:23px}.answer-reference-dialog header p{margin:0;color:var(--text-muted)}.answer-reference-content{overflow-y:auto;padding:8px 28px 24px;min-height:0;line-height:1.75}.answer-reference-content h3{margin:20px 0 10px;font-size:16px}.answer-reference-content section+section{border-top:1px solid var(--border);margin-top:20px}.answer-reference-dialog footer{padding:16px 28px;border-top:1px solid var(--border);display:flex;justify-content:flex-end}.choice-answer-list{display:grid;gap:10px;width:100%}.choice-answer-list .choice-answer{display:flex;align-items:flex-start;gap:12px;width:100%;text-align:left;white-space:normal;height:auto;padding:12px 16px;line-height:1.5}.choice-answer-letter{font-weight:800;flex-shrink:0;color:var(--accent)}