:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--background:#f3f6fb;--surface:#fff;--text:#172033;--muted:#647087;--accent:#3157a4;--border:#dce3ef}*{box-sizing:border-box}html,body{min-height:100%}body{background:var(--background);color:var(--text);margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}.home{place-items:center;min-height:100vh;padding:24px;display:grid}.titleCard{border:1px solid var(--border);background:var(--surface);text-align:center;border-radius:24px;width:min(760px,100%);padding:clamp(32px,7vw,64px);box-shadow:0 24px 70px #253b641a}.eyebrow{color:var(--accent);letter-spacing:.12em;margin:0 0 18px;font-size:.9rem;font-weight:700}h1{text-wrap:balance;margin:0;font-size:clamp(2rem,5vw,3.75rem);line-height:1.2}.status{max-width:36rem;color:var(--muted);margin:24px auto 0;font-size:1rem;line-height:1.8}.experimentPage{place-items:start center;min-height:100vh;padding:clamp(24px,5vw,64px) 20px;display:grid}.experimentCard{border:1px solid var(--border);background:var(--surface);border-radius:24px;width:min(760px,100%);padding:clamp(28px,6vw,56px);box-shadow:0 24px 70px #253b641a}.experimentCard h1{font-size:clamp(1.8rem,4vw,3rem)}.experimentCard h2{margin:0 0 10px;font-size:1.1rem}.contentSection{color:var(--muted);margin-top:28px;font-size:1rem;line-height:1.8}.contentSection p{margin:0}.placeholderPanel,.timer{border:1px solid var(--border);background:#f8faff;border-radius:16px;padding:22px}.taskAction{gap:16px;margin-top:28px;display:grid}.primaryButton,.primaryLink,.secondaryButton{background:var(--accent);color:#fff;min-height:48px;font:inherit;cursor:pointer;border:0;border-radius:12px;justify-content:center;align-items:center;padding:12px 24px;font-weight:700;text-decoration:none;display:inline-flex}.secondaryButton{border:1px solid var(--accent);background:var(--surface);color:var(--accent)}.primaryLink{margin-top:28px}.primaryButton:disabled,.secondaryButton:disabled{cursor:wait;opacity:.65}.formError{color:#a32222;margin:0;font-weight:600}.entryRecovery{justify-items:start;gap:16px;margin-top:20px;display:grid}.entryRecovery p{margin:0}.entryRecovery--delayed{visibility:hidden;animation:0s linear 8s forwards reveal-entry-recovery}.entryRecovery--entry-delay{animation-delay:20s}@keyframes reveal-entry-recovery{to{visibility:visible}}.errorRetry{margin-top:28px}.researchPage{place-items:start center;min-height:100vh;padding:clamp(24px,5vw,64px) 20px;display:grid}.researchCard{border:1px solid var(--border);background:var(--surface);border-radius:24px;width:min(980px,100%);padding:clamp(28px,5vw,52px);box-shadow:0 24px 70px #253b641a}.researchCard h1{font-size:clamp(1.8rem,4vw,3rem)}.researchLoginCard{width:min(560px,100%)}.researchLead,.researchNote{color:var(--muted);line-height:1.7}.researchLoginForm,.researchLoginForm label{gap:10px;display:grid}.researchLoginForm{gap:20px;margin-top:28px}.researchLoginForm input{border:1px solid var(--border);min-height:46px;color:var(--text);font:inherit;border-radius:10px;padding:10px 12px}.researchHeading{justify-content:space-between;align-items:flex-start;gap:24px;display:flex}.researchSummary{grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px;margin:32px 0;display:grid}.researchSummary div{border:1px solid var(--border);background:#f8faff;border-radius:12px;padding:16px}.researchSummary dt{color:var(--muted);font-size:.85rem}.researchSummary dd{margin:6px 0 0;font-size:1.25rem;font-weight:700}.researchSummary .researchTimestamp{overflow-wrap:anywhere;font-size:.85rem;font-weight:600}.researchDownloads{grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:14px;display:grid}.researchDownloads form,.researchDownloads button{width:100%}.researchMerge{border-top:1px solid var(--border);gap:22px;margin-top:36px;padding-top:32px;display:grid}.researchMerge h2,.researchMerge p{margin-top:0}.researchMergeForm,.researchFileControls,.researchMergeSelections,.researchMergeSelections label{gap:10px;display:grid}.researchMergeForm{grid-template-columns:minmax(0,1fr) auto;align-items:end}.researchMerge select{border:1px solid var(--border);background:var(--surface);min-height:46px;color:var(--text);font:inherit;border-radius:10px;padding:10px 12px}.researchFileDropZone{color:var(--muted);text-align:center;background:#f8faff;border:1px dashed #9aabc7;border-radius:10px;padding:20px}.researchFileDropZone--active{border-color:var(--accent);color:var(--text);background:#eef3fc}.researchSelectedFile{color:var(--muted);overflow-wrap:anywhere;font-size:.85rem}.researchMergeSelections{border:1px solid var(--border);background:#f8faff;border-radius:14px;padding:20px}.researchMergeSummary{grid-template-columns:repeat(auto-fit,minmax(110px,1fr));gap:10px;margin:0;display:grid}.researchMergeSummary div{background:#f8faff;border-radius:10px;padding:12px}.researchMergeSummary dt{color:var(--muted);font-size:.8rem}.researchMergeSummary dd{margin:4px 0 0;font-size:1.15rem;font-weight:700}@media (max-width:700px){.researchMergeForm{grid-template-columns:1fr}}.taskCard{gap:24px;width:min(1440px,100%);display:grid}.taskCard .eyebrow,.taskCard .contentSection,.taskCard .taskAction{margin:0}.timer{color:var(--muted);grid-template-columns:1fr auto;align-items:center;gap:6px 16px;display:grid}.timer strong{color:var(--text);font-variant-numeric:tabular-nums;font-size:1.7rem}.timer small{grid-column:1/-1}.noTimer{color:var(--muted);margin:0}.temporaryNote{color:var(--muted);text-align:center;margin:0;font-size:.85rem;line-height:1.6}.modalBackdrop{z-index:20;background:#0f18297a;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.confirmDialog{background:var(--surface);border-radius:18px;width:min(520px,100%);padding:28px;box-shadow:0 24px 80px #0f18294d}.confirmDialog p{color:var(--muted);line-height:1.75}.dialogActions{justify-content:flex-end;gap:12px;margin-top:24px;display:flex}.finalResponseCard{width:min(900px,100%)}.finalStatus{margin-inline:0}.finalResponseForm{gap:26px;margin-top:32px;display:grid}.readOnlyConversation{border:1px solid var(--border);background:#f8faff;border-radius:16px;gap:12px;max-height:520px;margin-top:28px;padding:20px;display:grid;overflow:auto}.readOnlyConversation h2{margin:0}.finalResponseForm fieldset,.fieldGroup{border:0;gap:12px;margin:0;padding:0;display:grid}.finalResponseForm legend,.fieldGroup>span{color:var(--text);font-weight:700}.finalResponseForm textarea{resize:vertical;border:1px solid var(--border);width:100%;color:var(--text);font:inherit;border-radius:12px;padding:12px;line-height:1.65}.finalResponseForm input[type=text],.finalResponseForm input[type=number]{border:1px solid var(--border);width:100%;color:var(--text);font:inherit;border-radius:10px;padding:11px 12px}.v3FinalSection{border:1px solid var(--border);background:#f8faff;border-radius:16px;margin-top:32px;padding:24px}.weekPlanGrid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.dayPlan{background:var(--surface);border-radius:12px;border:1px solid var(--border)!important;gap:10px!important;padding:16px!important;display:grid!important}.dayPlan label,.feedbackTiming label{gap:6px;display:grid}.dayPlan label>span,.feedbackTiming label>span{color:var(--muted);font-size:.9rem;font-weight:600}.purchaseFieldset,.feedbackTiming{margin-top:20px!important}.feedbackTiming{grid-template-columns:repeat(2,minmax(0,1fr))}.feedbackTiming legend,.feedbackTiming .fieldHelp{grid-column:1/-1}.finalResponseForm textarea:focus{border-color:var(--accent);outline:2px solid #3157a426}.choiceList,.confidenceScale{gap:10px;display:grid}.choiceList label,.confidenceScale label{border:1px solid var(--border);cursor:pointer;border-radius:10px;align-items:flex-start;gap:10px;padding:12px;display:flex}.choiceList input,.confidenceScale input{accent-color:var(--accent);margin-top:3px}.confidenceScale{grid-template-columns:repeat(7,minmax(0,1fr))}.confidenceScale label{text-align:center;justify-content:center;align-items:center}.fieldHelp,.fieldError,.submissionNotice{color:var(--muted);margin:0;line-height:1.6}.fieldError{color:#a32222}.submissionNotice{text-align:center}.taskWorkspace{grid-template-columns:minmax(0,3fr) minmax(280px,2fr);align-items:start;gap:24px;display:grid}.taskIntroduction{border:1px solid var(--border);background:#f8faff;border-radius:16px;margin-bottom:20px;padding:20px 24px}.taskWorkspace--career{grid-template-columns:1fr}.taskWorkspace--career .aiPanel{min-height:560px;position:static}.materialsPanel,.aiPanel{border:1px solid var(--border);background:#f8faff;border-radius:16px;padding:24px}.chatPanel{gap:16px;min-height:520px;display:grid}.chatHistory{align-content:start;gap:12px;max-height:480px;padding:4px;display:grid;overflow-y:auto}.chatEmpty{border:1px dashed var(--border);text-align:center;border-radius:12px;padding:18px}.chatMessage{border:1px solid var(--border);background:var(--surface);border-radius:14px;max-width:92%;padding:12px 14px}.chatMessage--user{background:#eaf0fb;justify-self:end}.chatMessage strong{color:var(--text);font-size:.82rem}.chatMessage p{color:var(--text);white-space:pre-wrap;margin-top:5px}.chatComposer{gap:10px;margin-top:auto;display:grid}.chatComposer textarea{resize:vertical;border:1px solid var(--border);background:var(--surface);width:100%;color:var(--text);font:inherit;border-radius:12px;padding:12px;line-height:1.6}.chatComposer textarea:focus{border-color:var(--accent);outline:2px solid #3157a426}.chatError,.chatDeadlineNotice{border-radius:10px;margin:0;padding:10px 12px;font-size:.9rem;line-height:1.6}.chatError{color:#8f2626;background:#fff1f1}.chatDeadlineNotice{color:var(--muted);background:#eef1f6}.materialsPanel{gap:28px;display:grid}.materialSection h2,.aiPanel h2{color:var(--text)}.materialSection p,.aiPanel p{color:var(--muted);margin:10px 0 0;line-height:1.8}.backgroundList{border:1px solid var(--border);border-radius:12px;gap:0;margin:14px 0 0;display:grid;overflow:hidden}.backgroundList div{grid-template-columns:minmax(110px,.28fr) 1fr;display:grid}.backgroundList div+div{border-top:1px solid var(--border)}.backgroundList dt,.backgroundList dd{margin:0;padding:12px 14px;line-height:1.65}.backgroundList dt{color:var(--text);background:#eef3fc;font-weight:700}.backgroundList dd{color:var(--muted)}.materialTableScroller{margin-top:14px;overflow-x:auto}.materialTable{border-collapse:collapse;width:100%;min-width:760px;color:var(--muted);font-size:.9rem;line-height:1.55}.materialTable th,.materialTable td{border:1px solid var(--border);text-align:left;vertical-align:top;padding:12px}.materialTable th{color:var(--text);background:#eaf0fb}.materialTable td:first-child{color:var(--text);font-weight:700}.experimentPage--v4{height:100dvh;min-height:0;padding:12px;overflow:hidden}.taskCard--v4{border-radius:18px;grid-template-rows:auto minmax(0,1fr);gap:12px;width:min(1600px,100%);height:calc(100dvh - 24px);min-height:0;padding:16px 18px 18px;overflow:hidden}.v4TaskHeader{justify-content:space-between;align-items:center;gap:24px;min-width:0;display:flex}.v4TaskHeader h1{margin-top:2px;font-size:clamp(1.35rem,2.2vw,2rem)}.v4TaskHeader .eyebrow{margin:0}.v4TaskHeader .timer{min-width:180px}.v4TaskHeader .timer strong{font-size:1.45rem}.v4HeaderStatus{color:var(--muted);background:#eef1f6;border-radius:999px;margin:0;padding:8px 12px;font-weight:700}.v4Workspace{grid-template-columns:minmax(0,58fr) minmax(360px,42fr);gap:14px;min-height:0;display:grid;overflow:hidden}.v4MaterialsPanel,.v4AiColumn{min-width:0;min-height:0}.v4MaterialsPanel{border:1px solid var(--border);background:#f8faff;border-radius:14px;overflow:hidden}.v4MaterialsScroll{overscroll-behavior:contain;align-content:start;gap:24px;height:100%;padding:20px;display:grid;overflow-y:auto}.careerTaskInstruction>h2{font-size:1.2rem;font-weight:700}.careerTaskContext .careerTaskSubheading{color:var(--text);margin:16px 0 0;font-size:1rem;font-weight:700;line-height:1.45}.careerTaskContext .careerTaskSubheading:first-child{margin-top:0}.careerTaskContext .careerTaskSubheading+p{margin-top:6px;font-weight:400}.v4AiColumn{grid-template-rows:minmax(0,1fr) auto;gap:10px;display:grid}.v4AiColumn .chatPanel{grid-template-rows:auto minmax(0,1fr) auto auto;height:100%;min-height:0;padding:18px;position:static}.v4AiColumn .chatHistory{min-height:0;max-height:none}.v4FinalDraft{background:var(--surface);border:1px solid #cbd7ee;border-radius:14px;padding:20px}.v4FinalForm{gap:18px;margin-top:16px;display:grid}.v4FinalForm fieldset,.v4FinalForm .fieldGroup{border:0;gap:10px;margin:0;padding:0;display:grid}.v4FinalForm legend,.v4FinalForm .fieldGroup>span{font-weight:700}.v4FinalForm textarea,.v4FinalForm select{border:1px solid var(--border);background:var(--surface);width:100%;color:var(--text);font:inherit;border-radius:10px;padding:11px 12px;line-height:1.6}.v4FinalForm textarea{resize:vertical}.choiceList--compact{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.v4DraftNotice,.v4InteractionEnded{color:var(--muted);background:#eef3fc;border-radius:10px;margin:0;padding:10px 12px;line-height:1.55}.v4EndAction{justify-content:space-between;align-items:center;gap:12px;display:flex}.v4EndAction small{color:var(--muted);text-align:right}.chatMessage--optimistic{opacity:.82}.chatMessage--typing p{color:var(--muted)}.materialTable--v4{table-layout:fixed;min-width:0}.materialTable--v4 th,.materialTable--v4 td{overflow-wrap:anywhere}@media (max-width:1100px){.v4Workspace{grid-template-columns:minmax(0,55fr) minmax(340px,45fr)}.v4MaterialsScroll,.v4AiColumn .chatPanel{padding:14px}.materialTable--v4{font-size:.82rem}}@media (max-width:900px){.experimentPage--v4{height:auto;min-height:100dvh;overflow:visible}.taskCard--v4{height:auto;min-height:calc(100dvh - 24px);overflow:visible}.v4Workspace{grid-template-columns:1fr;overflow:visible}.v4MaterialsScroll{max-height:60dvh}.v4AiColumn .chatPanel{min-height:560px}}@media (max-width:600px){.v4TaskHeader,.v4EndAction{flex-direction:column;align-items:stretch}.v4EndAction small{text-align:left}.choiceList--compact{grid-template-columns:1fr}}.aiPanel{min-height:280px;position:sticky;top:24px}.compactCard{text-align:center;margin-top:10vh}.participantCompletion{justify-items:center;gap:18px;margin-top:28px;display:grid}.participantCompletion p{color:var(--muted);margin:0;line-height:1.7}.participantCompletionCode{border:1px solid var(--border);font-variant-numeric:tabular-nums;letter-spacing:.12em;background:#f8faff;border-radius:14px;padding:14px 20px;font-size:clamp(2rem,8vw,3.2rem);font-weight:800}.participantCompletionStatus{min-height:1.5em;font-weight:700}.textLink{color:var(--accent);margin-top:20px;font-weight:700;display:inline-block}@media (max-width:560px){.experimentPage{padding:12px}.experimentCard{border-radius:16px}.confidenceScale,.weekPlanGrid,.feedbackTiming{grid-template-columns:1fr}}@media (max-width:960px){.taskWorkspace{grid-template-columns:1fr}.aiPanel{min-height:180px;position:static}}