:root{color-scheme:light;--font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;--font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;--text-xs: 12px;--text-sm: 12px;--text-md: 14px;--text-lg: 16px;--text-xl: 20px;--text-2xl: 34px;--lh-tight: 1.14;--lh-body: 1.55;--radius: 8px;--bg: #eee3d2;--bg-2: #f7f0e5;--surface: rgba(255, 251, 243, .94);--surface-solid: #fffbf3;--surface-2: #f7ead8;--surface-3: #efe0cb;--ink: #221b16;--muted: #766959;--border: rgba(89, 70, 48, .2);--border-strong: rgba(89, 70, 48, .36);--accent: #607d67;--accent-strong: #3f614a;--accent-soft: #e4ecd9;--accent-2: #a65f3d;--accent-2-soft: #f7dfcf;--info: #485f8f;--info-soft: #dfe6f7;--success: #2f7547;--success-soft: #dcefdc;--warning: #9b6a20;--warning-soft: #f4e7c8;--danger: #a54432;--danger-soft: #f4d8d1;--shadow-sm: 0 8px 18px rgba(63, 45, 26, .08);--shadow-md: 0 18px 40px rgba(63, 45, 26, .12);--shadow-lg: 0 28px 70px rgba(49, 32, 19, .2);--focus: 0 0 0 3px rgba(96, 125, 103, .24);--dur-1: .14s;--dur-2: .22s;--ease-out: cubic-bezier(.2, .9, .2, 1);font-family:var(--font-sans);color:var(--ink);background:var(--bg)}:root[data-theme=light],:root[data-theme=system]{--bg: #f5f6f4;--bg-2: #ffffff;--surface: rgba(255, 255, 255, .96);--surface-solid: #ffffff;--surface-2: #f8faf8;--surface-3: #edf2ef;--ink: #151915;--muted: #747b74;--border: rgba(31, 41, 35, .12);--border-strong: rgba(31, 41, 35, .22);--accent: #2f6f56;--accent-strong: #155c43;--accent-soft: #edf5ef;--accent-2: #e3812d;--accent-2-soft: #fff3e8;--shadow-sm: 0 8px 22px rgba(18, 27, 21, .045);--shadow-md: 0 16px 38px rgba(18, 27, 21, .07);--shadow-lg: 0 28px 70px rgba(18, 27, 21, .16)}:root[data-theme=dark]{color-scheme:dark;--bg: #161310;--bg-2: #211b16;--surface: rgba(41, 34, 28, .94);--surface-solid: #29221c;--surface-2: #342b23;--surface-3: #403429;--ink: #f3eadc;--muted: #b9aa96;--border: rgba(239, 222, 199, .16);--border-strong: rgba(239, 222, 199, .28);--accent: #9fb48a;--accent-strong: #c2d4a6;--accent-soft: rgba(129, 156, 111, .2);--accent-2: #d28a63;--accent-2-soft: rgba(186, 102, 66, .2);--info: #aab7e6;--info-soft: rgba(102, 123, 181, .22);--success: #94c08a;--success-soft: rgba(85, 133, 76, .2);--warning: #e0b663;--warning-soft: rgba(188, 134, 43, .2);--danger: #e18a73;--danger-soft: rgba(184, 73, 50, .22);--shadow-sm: 0 8px 18px rgba(0, 0, 0, .18);--shadow-md: 0 18px 42px rgba(0, 0, 0, .28);--shadow-lg: 0 30px 80px rgba(0, 0, 0, .42);--focus: 0 0 0 3px rgba(159, 180, 138, .28)}@media(prefers-color-scheme:dark){:root:not([data-theme=light]),:root[data-theme=system]{color-scheme:dark;--bg: #161310;--bg-2: #211b16;--surface: rgba(41, 34, 28, .94);--surface-solid: #29221c;--surface-2: #342b23;--surface-3: #403429;--ink: #f3eadc;--muted: #b9aa96;--border: rgba(239, 222, 199, .16);--border-strong: rgba(239, 222, 199, .28);--accent: #9fb48a;--accent-strong: #c2d4a6;--accent-soft: rgba(129, 156, 111, .2);--accent-2: #d28a63;--accent-2-soft: rgba(186, 102, 66, .2);--info: #aab7e6;--info-soft: rgba(102, 123, 181, .22);--success: #94c08a;--success-soft: rgba(85, 133, 76, .2);--warning: #e0b663;--warning-soft: rgba(188, 134, 43, .2);--danger: #e18a73;--danger-soft: rgba(184, 73, 50, .22);--shadow-sm: 0 8px 18px rgba(0, 0, 0, .18);--shadow-md: 0 18px 42px rgba(0, 0, 0, .28);--shadow-lg: 0 30px 80px rgba(0, 0, 0, .42);--focus: 0 0 0 3px rgba(159, 180, 138, .28)}}*{box-sizing:border-box}body{margin:0;background:var(--bg)}button,input,select,textarea{font:inherit}a{color:inherit}button{border:0;cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:none;box-shadow:var(--focus)}.app-shell{min-height:100vh;background:linear-gradient(180deg,rgba(255,255,255,.78),transparent 260px),repeating-linear-gradient(0deg,rgba(31,41,35,.024) 0 1px,transparent 1px 22px),var(--bg);color:var(--ink)}.workspace{width:min(1920px,100%);margin:0 auto;padding:0 18px 22px}.topbar{position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;margin:0 -18px 16px;border:0;border-bottom:1px solid var(--border);border-radius:0;background:var(--surface-solid);padding:18px 38px;box-shadow:none}.topbar:before{display:none}.topbar h1{margin:0;font-size:clamp(26px,2vw,31px);line-height:var(--lh-tight);letter-spacing:0}.topbar-brand{display:flex;align-items:center;gap:16px}.app-logo{position:relative;display:grid;place-items:center;width:38px;height:38px;border-radius:8px;background:linear-gradient(145deg,var(--accent),var(--accent-strong));color:#fff;font-size:18px;font-weight:900;box-shadow:0 10px 18px #155c4338}.app-logo:before{content:"";position:absolute;top:-5px;left:-4px;width:12px;height:12px;border-radius:50%;background:var(--accent-2);opacity:.55}.eyebrow{margin:0 0 4px;color:var(--accent-2);font-size:var(--text-xs);font-weight:900;letter-spacing:.08em;text-transform:uppercase}.status-pill,.account-pill,.theme-toggle,.notice,.panel-title,.quiz-actions,.checkbox-row{display:flex;align-items:center}.topbar-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end}.status-pill,.account-pill,.theme-toggle{gap:8px;justify-content:center;min-height:44px;border:1px solid var(--border);border-radius:var(--radius);padding:0 14px;background:var(--surface-solid);color:var(--ink);box-shadow:none;font-weight:800}.theme-toggle{transition:transform var(--dur-1) var(--ease-out),border-color var(--dur-1) var(--ease-out),background var(--dur-1) var(--ease-out)}.theme-toggle:hover{border-color:var(--accent);background:var(--accent-soft);transform:translateY(-1px)}.status-pill{min-width:132px;color:var(--accent-strong)}.account-pill{min-width:172px}.icon-action,.login-action{display:grid;place-items:center;min-height:32px;border-radius:var(--radius);background:var(--surface-2);color:var(--ink);transition:transform var(--dur-1) var(--ease-out),background var(--dur-1) var(--ease-out)}.icon-action{width:32px}.icon-action:hover,.login-action:hover{background:var(--accent-soft);transform:translateY(-1px)}.danger-action{background:var(--danger-soft);color:var(--danger)}.login-action{grid-auto-flow:column;gap:6px;padding:0 10px;text-decoration:none}.layout{display:grid;grid-template-columns:minmax(360px,440px) 1fr;gap:22px}.cockpit-layout{grid-template-columns:minmax(320px,400px) minmax(0,1fr) minmax(330px,420px);align-items:start;gap:14px}.quiz-layout{display:grid;grid-template-columns:1fr;gap:18px}.side-panel,.main-panel{display:grid;gap:12px;align-content:start}.setup-main{gap:12px}.cockpit-tools,.cockpit-center,.cockpit-rail,.detail-main,.quiz-main{min-width:0}.toolbench-panel{display:grid;gap:10px}.toolbench-panel .panel-title{margin-bottom:0}.toolbench-panel label{margin-bottom:6px}.toolbench-panel .file-action-row{margin-top:0}.source-pick-card,.paste-card,.generation-card{border:0;border-radius:0;background:transparent}.source-pick-card{padding:0}.paste-card,.generation-card{display:grid;gap:8px;border-top:1px solid var(--border);padding:12px 0 0}.field-title{color:var(--ink);font-size:var(--text-sm);font-weight:900}.material-summary{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-2);margin:0;padding:9px 10px}.config-grid{display:grid;grid-template-columns:1fr .8fr;gap:10px}.workspace-stage{display:grid;min-height:auto;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-solid);box-shadow:var(--shadow-sm);overflow:hidden}.toolbench-divider{height:1px;margin:0;background:linear-gradient(90deg,transparent,var(--border-strong),transparent)}.compact-title h2{font-size:16px}.cloud-rail-panel{min-height:212px}.cockpit-rail{position:sticky;top:18px;display:grid;gap:12px;max-height:calc(100vh - 36px);overflow:auto}.cloud-empty-panel{display:grid;gap:12px}.cloud-login-action{width:fit-content;background:var(--accent-strong);color:#fff}.cockpit-progress-panel{display:grid;gap:12px;width:min(760px,100%);margin:16px auto 0;padding:16px;box-shadow:0 18px 44px #121b1514}.progress-panel-title{display:flex;align-items:center;gap:12px}.progress-panel-title h2{margin:0;font-size:22px}.progress-title-icon{display:grid;place-items:center;width:42px;height:42px;border-radius:13px;background:var(--accent-soft);color:var(--accent-strong)}.rail-progress-grid{display:grid;grid-template-columns:1fr;gap:8px;align-self:start}.progress-stat-card{display:grid;grid-template-columns:48px minmax(0,1fr) 30px;align-items:center;gap:12px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-solid);min-height:66px;padding:10px 12px}.progress-stat-card>div{display:grid;gap:4px}.progress-stat-card .metric{font-size:28px}.progress-stat-card span:last-child,.progress-stat-card>div span:last-child{color:var(--muted);font-size:13px;font-weight:800}.progress-stat-icon{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:var(--accent-soft);color:var(--accent-strong)}.progress-stat-icon.warm{background:var(--accent-2-soft);color:var(--accent-2)}.progress-stat-badge{display:grid;place-items:center;width:26px;height:26px;border-radius:50%;background:var(--accent-soft);color:color-mix(in srgb,var(--accent-strong) 64%,transparent)}.progress-stat-badge.warm{background:var(--accent-2-soft);color:var(--accent-2)}.progress-dashboard{display:grid;grid-template-columns:minmax(190px,240px) minmax(0,1fr);gap:18px;align-items:start}.progress-ring{--progress: 0%;display:grid;place-items:center;align-content:center;width:min(205px,100%);aspect-ratio:1;border-radius:50%;background:radial-gradient(circle at center,var(--surface-solid) 0 58%,transparent 59%),conic-gradient(var(--accent-2) var(--progress),var(--surface-3) 0)}.progress-ring span{color:var(--accent-strong);font-size:38px;font-weight:950;line-height:1}.progress-ring small{margin-top:8px;color:var(--muted);font-size:17px;font-weight:900}.overview-bank-name{display:inline-flex;align-items:center;gap:6px;min-height:28px;max-width:min(360px,42vw);min-width:0;border:0;border-radius:0;background:transparent;padding:0;color:var(--muted);font-size:var(--text-sm);font-weight:850;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;cursor:text}.overview-bank-name span{min-width:0;overflow:hidden;text-overflow:ellipsis}.overview-bank-name:hover{color:var(--accent-strong)}.overview-bank-rename{display:inline-flex;align-items:center;gap:6px;min-width:180px;max-width:min(420px,46vw);color:var(--accent-strong)}.overview-bank-rename input{width:min(360px,38vw);min-width:0;height:30px;border:1px solid color-mix(in srgb,var(--accent) 58%,var(--border));border-radius:8px;background:var(--surface-solid);color:var(--ink);padding:0 9px;font-size:var(--text-sm);font-weight:850;outline:none;box-shadow:0 0 0 3px var(--accent-soft)}.quiz-page-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);padding:8px;box-shadow:var(--shadow-sm)}.quiz-bank-title{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);padding:10px 13px;color:var(--ink);font-weight:900;overflow-wrap:anywhere}.panel,.quiz-surface,.report-surface,.preview-band,.question-bank-detail,.start-surface,.empty-state,.dashboard-band div{position:relative;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-solid);box-shadow:var(--shadow-sm)}.panel,.quiz-surface,.report-surface{padding:16px}.quiz-surface,.report-surface,.start-surface{overflow:hidden}.quiz-surface:before,.report-surface:before,.start-surface:before{content:"";position:absolute;inset:0 auto 0 0;width:6px;background:linear-gradient(180deg,var(--accent-2),var(--accent))}.panel-title{gap:8px;margin-bottom:16px;color:var(--ink)}.panel-title svg{color:var(--accent-strong)}.panel-title h2,.quiz-head h2,.empty-state h2{margin:0;font-size:var(--text-lg)}.panel label{display:grid;gap:6px;margin-bottom:12px;color:var(--muted);font-size:var(--text-sm);font-weight:800}input,select,textarea{width:100%;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-solid);color:var(--ink);outline:none;transition:border-color var(--dur-1) var(--ease-out),background var(--dur-1) var(--ease-out),box-shadow var(--dur-1) var(--ease-out)}input,select{min-height:40px;padding:0 10px}textarea{min-height:220px;resize:vertical;padding:12px;line-height:var(--lh-body)}.toolbench-panel textarea{min-height:92px}input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:var(--focus)}::placeholder{color:color-mix(in srgb,var(--muted) 72%,transparent)}.upload-zone{position:relative;place-items:center;min-height:124px;border:1px dashed var(--border-strong);border-radius:var(--radius);background:linear-gradient(135deg,var(--accent-soft),transparent 74%),var(--surface-2);text-align:center;color:var(--ink);transition:border-color var(--dur-1) var(--ease-out),background var(--dur-1) var(--ease-out),transform var(--dur-1) var(--ease-out)}.toolbench-panel .upload-zone{min-height:84px;border-style:dashed;background:linear-gradient(135deg,rgba(47,111,86,.05),transparent 70%),var(--surface-solid)}.toolbench-panel .upload-zone small{color:var(--muted);font-size:var(--text-xs);font-weight:800}.toolbench-panel .upload-zone svg{width:28px;height:28px}.source-pick-card .upload-zone span{font-size:var(--text-sm)}.upload-zone svg{color:var(--accent-strong)}.upload-zone:hover{border-color:var(--accent);background:var(--accent-soft);transform:translateY(-1px)}.upload-zone input{position:absolute;top:0;right:0;bottom:0;left:0;opacity:0;cursor:pointer}.checkbox-row{grid-template-columns:18px 1fr;gap:8px;font-weight:700}.checkbox-row input{min-height:auto}.primary,.secondary{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:40px;border-radius:var(--radius);padding:0 15px;font-weight:900;transition:transform var(--dur-1) var(--ease-out),border-color var(--dur-1) var(--ease-out),background var(--dur-1) var(--ease-out),box-shadow var(--dur-1) var(--ease-out)}.primary{background:linear-gradient(90deg,color-mix(in srgb,var(--accent) 58%,#ffffff),var(--accent-strong));color:#fffdf7;box-shadow:0 12px 22px #3f614a38}.secondary{border:1px solid var(--border);background:var(--surface-solid);color:var(--ink)}.primary:hover,.secondary:hover{transform:translateY(-1px)}.secondary:hover{border-color:var(--accent);background:var(--accent-soft)}.primary:active,.secondary:active,.icon-action:active,.theme-toggle:active{transform:translateY(0)}.file-action-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:10px;align-items:stretch}.import-action{position:relative;overflow:hidden}.import-action input{position:absolute;top:0;right:0;bottom:0;left:0;opacity:0;cursor:pointer}.muted{color:var(--muted);font-size:var(--text-sm);line-height:1.45}.notice{gap:8px;border:1px solid color-mix(in srgb,var(--danger) 38%,transparent);border-left:5px solid var(--danger);border-radius:var(--radius);background:var(--danger-soft);color:var(--danger);padding:12px 14px;font-weight:800}.setup-bottom-notice{width:100%;margin-top:2px}.dashboard-band{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.dashboard-band div,.preview-band,.question-bank-detail,.start-surface,.empty-state{padding:14px}.dashboard-band div{display:grid;gap:4px;min-height:96px}.dashboard-band div span:last-child{color:var(--muted);font-weight:800}.metric{color:var(--accent-strong);font-family:var(--font-mono);font-size:30px;font-weight:900;line-height:1}.difficulty-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;margin-bottom:8px}.difficulty-grid span,.knowledge-list span{border:1px solid var(--border);border-radius:var(--radius);background:var(--accent-soft);padding:6px 8px;color:var(--accent-strong);font-size:12px;font-weight:800}.knowledge-list{display:flex;flex-wrap:wrap;gap:6px}.generation-card .primary{min-height:40px}.quiet-file-action{display:grid;grid-auto-flow:column;grid-auto-columns:max-content;align-items:center;justify-content:center;gap:8px;width:100%;height:48px;min-height:48px;border:1px solid color-mix(in srgb,var(--accent) 52%,var(--border));border-radius:var(--radius);background:linear-gradient(180deg,color-mix(in srgb,var(--accent) 16%,#ffffff),var(--accent-soft));color:var(--accent-strong);font-size:var(--text-sm);font-weight:950;line-height:1;box-shadow:0 10px 22px #155c431f;white-space:nowrap}.quiet-file-action:hover{border-color:var(--accent);background:linear-gradient(180deg,var(--accent),var(--accent-strong));color:#fff;box-shadow:0 14px 28px #155c4333}button.quiet-file-action:disabled{border-color:var(--border);background:var(--surface-2);color:color-mix(in srgb,var(--muted) 82%,transparent);box-shadow:none;opacity:1}button.quiet-file-action:disabled:hover{transform:none;border-color:var(--border);background:var(--surface-2);color:color-mix(in srgb,var(--muted) 82%,transparent);box-shadow:none}.file-action-row .import-action.quiet-file-action{display:grid;grid-auto-flow:column;grid-auto-columns:max-content;align-items:center;justify-content:center}.file-action-row .import-action.quiet-file-action:hover{transform:translateY(-1px)}.file-action-row .import-action.quiet-file-action input{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;opacity:0;cursor:pointer}.quiet-file-action svg,.file-action-row .import-action.quiet-file-action svg{display:block;width:18px;height:18px;flex:0 0 auto;stroke-width:2.3}.quiet-file-action span,.file-action-row .import-action.quiet-file-action span{line-height:1}.question-bank-overview{border:0;border-radius:0;box-shadow:none;padding:13px 16px 14px}.question-bank-overview .panel-title{margin-bottom:0}.overview-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,auto);align-items:center;gap:12px;margin-bottom:10px}.overview-title-row{display:flex;align-items:center;gap:8px;min-width:0}.overview-title-row .panel-title{flex:0 0 auto}.overview-separator{color:var(--muted);font-weight:900}.overview-actions{display:flex;justify-content:flex-end;gap:8px;flex-wrap:wrap;min-width:0;max-width:100%}.overview-actions .compact-action{min-height:36px;padding:0 12px}.question-bank-overview .knowledge-list span{padding:5px 8px;font-size:12px}.start-surface{display:flex;align-items:center;justify-content:space-between;gap:12px;border-color:color-mix(in srgb,var(--accent) 54%,var(--border));background:linear-gradient(135deg,var(--accent-soft),transparent 62%),var(--surface)}.cockpit-empty-state{min-height:420px;align-content:center;gap:8px;border:0;box-shadow:none}.workspace-stage .cockpit-empty-state{min-height:520px;padding:36px}.empty-illustration{display:grid;place-items:center;width:150px;height:120px;margin-bottom:18px;border-radius:30px;background:linear-gradient(180deg,rgba(255,255,255,.8),transparent),var(--surface-3);color:color-mix(in srgb,var(--muted) 58%,transparent)}.empty-features{display:flex;align-items:center;justify-content:center;gap:26px;flex-wrap:wrap;margin-top:28px;color:var(--muted);font-size:var(--text-sm);font-weight:800}.empty-features span{display:inline-flex;align-items:center;gap:7px}.empty-features span+span{border-left:1px solid var(--border);padding-left:26px}.start-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}.start-surface h2{margin:0 0 6px;font-size:18px}.start-surface p{margin:0;color:var(--muted);line-height:1.45}.cloud-bank-list{display:grid;gap:10px}.cloud-bank-item{display:grid;grid-template-columns:minmax(0,1fr);align-items:center;gap:12px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-solid);padding:12px 14px;transition:transform var(--dur-1) var(--ease-out),border-color var(--dur-1) var(--ease-out),box-shadow var(--dur-1) var(--ease-out)}.cloud-bank-item:hover{border-color:var(--accent);box-shadow:var(--shadow-sm);transform:translateY(-1px)}.cloud-bank-meta{display:grid;gap:4px;min-width:0}.cloud-bank-meta strong{overflow-wrap:anywhere}.cloud-bank-progress-grid{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.cloud-bank-progress-grid span{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-2);padding:5px 8px;color:var(--muted);font-size:var(--text-sm);font-weight:800}.cloud-bank-progress-grid .progress-active{border-color:color-mix(in srgb,var(--accent) 45%,transparent);background:var(--accent-soft);color:var(--accent-strong)}.cloud-bank-progress-grid .progress-done{border-color:color-mix(in srgb,var(--info) 45%,transparent);background:var(--info-soft);color:var(--info)}.cloud-bank-actions{display:grid;grid-template-columns:auto minmax(88px,auto);align-items:center;gap:10px;justify-self:end}.cloud-bank-icon-actions{display:grid;grid-template-columns:repeat(3,34px);gap:6px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);padding:4px}.cloud-bank-rename{display:grid;grid-template-columns:minmax(180px,1fr) 32px 32px;align-items:center;gap:8px;width:100%}.cloud-bank-rename input{min-height:34px}.cloud-bank-item span{color:var(--muted);font-weight:800}.compact-action{min-height:36px;padding:0 14px;white-space:nowrap}.question-bank-detail{display:grid;gap:14px}.detail-header{display:grid;gap:12px}.detail-header h2{margin:4px 0;font-size:var(--text-xl);overflow-wrap:anywhere}.detail-header p{margin:0;color:var(--muted);font-weight:800}.detail-search{display:grid;grid-template-columns:22px 1fr;align-items:center;gap:8px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-solid);padding:0 12px}.detail-browser{display:grid;grid-template-columns:minmax(280px,360px) minmax(0,1fr);gap:14px;align-items:start}.detail-knowledge-rail{position:sticky;top:18px;display:grid;gap:10px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-solid);padding:14px}.detail-knowledge-rail .panel-title{margin-bottom:0}.detail-scroll-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px}.detail-search input{border:0;background:transparent;padding:0}.detail-search:focus-within{border-color:var(--accent);box-shadow:var(--focus)}.detail-knowledge-list{padding-bottom:2px}.detail-knowledge-section{display:grid;gap:10px;margin-top:10px;border-top:1px solid var(--border);padding-top:16px}.question-detail-list{display:grid;gap:12px}.question-detail-card{display:grid;gap:10px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-solid);padding:14px}.question-detail-foot{display:grid;gap:6px;border-top:1px solid var(--border);padding-top:10px}.question-detail-head{display:flex;justify-content:space-between;gap:12px}.question-detail-head strong{line-height:1.45;overflow-wrap:anywhere}.question-detail-head span,.question-detail-points{color:var(--muted);font-size:var(--text-sm);font-weight:800}.question-detail-options{display:grid;gap:6px}.question-detail-options p,.question-detail-answer,.question-detail-explanation,.question-detail-points{margin:0;line-height:1.5}.question-detail-options p{display:grid;grid-template-columns:28px 1fr;gap:8px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-2);padding:8px 10px}.question-detail-options b{display:grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--surface-3)}.question-detail-answer{color:var(--success);font-weight:900}.question-detail-explanation{color:var(--ink)}.quiz-head{display:flex;justify-content:space-between;gap:20px;margin-bottom:18px}.quiz-cockpit{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,320px);gap:16px;align-items:start}.quiz-sidecar{position:sticky;top:18px;min-width:0}.sidecar-stats{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:12px}.sidecar-stats div{display:grid;gap:4px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-solid);padding:12px}.sidecar-stats span:last-child{color:var(--muted);font-size:var(--text-sm);font-weight:800}.quiz-head h2{margin-top:8px;font-size:var(--text-lg);line-height:1.45;overflow-wrap:anywhere}.question-type{display:inline-flex;align-items:center;gap:9px;min-height:42px;border-radius:var(--radius);padding:0 16px;font-size:var(--text-lg);font-weight:900}.question-type.single{background:var(--accent-soft);color:var(--accent-strong)}.question-type.multiple{background:var(--accent-2-soft);color:var(--accent-2)}.mastery{display:grid;place-items:center;width:48px;height:48px;border:1px solid var(--border);border-radius:50%;background:var(--ink);color:var(--surface-solid);font-family:var(--font-mono);font-weight:900;flex:0 0 auto}.options{display:grid;gap:10px}.option{display:grid;grid-template-columns:36px 1fr;align-items:center;gap:12px;width:100%;min-height:58px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-solid);color:var(--ink);padding:10px 12px;text-align:left;line-height:1.45;overflow-wrap:anywhere;transition:transform var(--dur-1) var(--ease-out),border-color var(--dur-1) var(--ease-out),background var(--dur-1) var(--ease-out)}.option:hover{border-color:var(--accent);background:var(--accent-soft);transform:translateY(-1px)}.option span{display:grid;place-items:center;width:32px;height:32px;border-radius:50%;background:var(--surface-3);font-family:var(--font-mono);font-weight:900}.option.selected{border-color:var(--accent);background:var(--accent-soft)}.option.answer{border-color:var(--success);background:var(--success-soft)}.feedback{margin-top:14px;border:1px solid transparent;border-radius:var(--radius);padding:12px 14px;line-height:1.5}.feedback p{margin:6px 0 0}.feedback .answer-line{font-weight:900}.feedback.correct{border-color:color-mix(in srgb,var(--success) 36%,transparent);background:var(--success-soft);color:var(--success)}.feedback.wrong{border-color:color-mix(in srgb,var(--danger) 36%,transparent);background:var(--danger-soft);color:var(--danger)}.quiz-actions{gap:10px;margin-top:16px;flex-wrap:wrap}.report-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.report-header{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:16px}.report-header .panel-title{margin-bottom:0}.report-grid div{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-solid);padding:14px}.report-grid h3{margin:0 0 10px;font-size:16px}.report-grid p{margin:8px 0;color:var(--muted);line-height:1.45;overflow-wrap:anywhere}.empty-state{display:grid;place-items:center;min-height:360px;text-align:center;color:var(--muted)}.empty-state svg{color:var(--accent-strong)}.empty-state p{margin:4px 0 0}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:20;display:grid;place-items:center;padding:18px;background:#14110e94}.complete-dialog{display:grid;justify-items:center;width:min(420px,100%);border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-solid);padding:28px;text-align:center;box-shadow:var(--shadow-lg)}.complete-dialog h2{margin:12px 0 6px;font-size:var(--text-xl)}.complete-dialog p{margin:0 0 18px;color:var(--muted);line-height:1.5}.spin{animation:spin .9s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.001ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.001ms!important}}@media(max-width:1240px){.cockpit-layout{grid-template-columns:minmax(300px,360px) minmax(0,1fr)}.cockpit-rail{grid-column:1 / -1}.cockpit-rail{position:relative;top:auto;max-height:none;overflow:visible}.cloud-bank-list,.report-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:920px){.workspace{padding:18px}.topbar,.quiz-head{align-items:flex-start;flex-direction:column}.topbar-actions{justify-content:flex-start}.layout,.cockpit-layout,.cloud-bank-list,.quiz-cockpit,.detail-browser{grid-template-columns:1fr}.quiz-sidecar,.detail-knowledge-rail{position:relative;top:auto}.dashboard-band,.difficulty-grid,.report-grid{grid-template-columns:1fr 1fr}.overview-head{grid-template-columns:1fr}.overview-actions{justify-content:flex-start}.progress-dashboard{grid-template-columns:1fr}.progress-ring{justify-self:center;width:220px}.start-surface{align-items:flex-start;flex-direction:column}.start-actions{justify-content:flex-start}.cloud-bank-item{grid-template-columns:1fr}.cloud-bank-actions{justify-self:stretch}.report-header{align-items:flex-start;flex-direction:column}}@media(max-width:560px){.workspace{padding:12px}.topbar{padding:20px 16px}.theme-toggle,.account-pill,.status-pill{width:100%}.dashboard-band,.difficulty-grid,.report-grid,.config-grid,.file-action-row{grid-template-columns:1fr}.panel,.quiz-surface,.report-surface,.dashboard-band div,.preview-band,.question-bank-detail,.start-surface,.empty-state{padding:14px}.question-detail-head,.detail-header{flex-direction:column}.cloud-bank-actions{grid-template-columns:1fr}.cloud-bank-icon-actions{grid-template-columns:repeat(3,1fr)}.option{grid-template-columns:34px 1fr}}
