/* V5 staged AI tutor — compact, reachable, and paper-first. */
.v5-tutor-dock{bottom:68px;padding:8px 9px;display:grid;gap:7px}.v5-tutor-mode-switch{display:grid;grid-template-columns:1fr 1fr;gap:3px;background:#f0f1f5;border-radius:9px;padding:3px}.v5-tutor-mode-switch button{border:0;background:transparent;border-radius:7px;min-height:31px;font-size:11px;font-weight:800;color:#737985}.v5-tutor-mode-switch button.active{background:#fff;color:#5145c0;box-shadow:0 1px 5px rgba(29,32,47,.09)}.v5-tutor-empty{display:flex;align-items:center;justify-content:space-between;gap:10px}.v5-tutor-empty>div{min-width:0}.v5-tutor-empty strong{display:block;font-size:11px}.v5-tutor-empty span{display:block;font-size:9px;color:var(--muted);margin-top:2px}.v5-tutor-empty .primary-btn{min-height:34px;white-space:nowrap;font-size:11px}.v5-tutor-stage{display:grid;gap:6px}.v5-tutor-stage-head{display:flex;align-items:center;gap:7px;min-width:0}.v5-tutor-stage-head>span{flex:0 0 auto;font-size:9px;font-weight:900;color:#6658df;background:#f0efff;border-radius:999px;padding:4px 7px}.v5-tutor-stage-head strong{font-size:10px;color:#a34d48;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.v5-tutor-stage-head strong.is-right{color:#347754}.v5-tutor-stage p{margin:0;font-size:12px;line-height:1.42;color:#434955;font-weight:650}.v5-tutor-actions{display:flex;gap:5px;flex-wrap:wrap;align-items:center}.v5-tutor-actions .primary-btn,.v5-tutor-actions .soft-btn{min-height:34px;padding:7px 10px;font-size:10px}.v5-link-btn{border:0;background:transparent;color:#756bba;font-weight:750;font-size:9px;padding:6px 4px}.v5-guide-utility{display:grid;grid-template-columns:minmax(90px,.8fr) minmax(120px,1fr) auto;gap:7px;align-items:center;padding-top:6px;border-top:1px solid rgba(109,93,252,.11)}.v5-guide-utility>[data-guide-status]{font-size:9px;color:#858b97;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.v5-guide-utility .v3-guide-caption{font-size:9px;max-width:none;text-align:left;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:#5c53ba}.v5-guide-utility>div{display:flex;gap:3px}.v5-guide-utility .soft-btn{min-height:28px;padding:4px 6px;font-size:9px}.v5-tutor-dock [disabled]{opacity:.55;cursor:default}
@media(max-width:700px){.v5-tutor-dock{position:fixed;left:7px;right:7px;bottom:calc(74px + env(safe-area-inset-bottom));z-index:70;max-height:42vh;overflow:auto;border-radius:15px;box-shadow:0 12px 34px rgba(35,36,54,.16)}.v5-tutor-mode-switch{position:sticky;top:-8px;z-index:2}.v5-tutor-stage p{font-size:12px}.v5-tutor-actions{display:grid;grid-template-columns:1fr 1fr}.v5-tutor-actions .primary-btn{grid-column:1/-1;min-height:42px;font-size:11px}.v5-tutor-actions .soft-btn{min-height:38px}.v5-tutor-actions .v5-link-btn{min-height:38px}.v5-guide-utility{grid-template-columns:1fr auto}.v5-guide-utility .v3-guide-caption{grid-column:1/-1;grid-row:1}.v5-guide-utility>[data-guide-status]{grid-column:1;grid-row:2}.v5-guide-utility>div{grid-column:2;grid-row:2}.v5-tutor-empty{align-items:stretch}.v5-tutor-empty .primary-btn{min-height:42px}.v3-paper{padding-bottom:200px}.v3-paper .paper-toolbar{bottom:0}}
@media(max-width:430px){.v5-tutor-actions{grid-template-columns:1fr}.v5-tutor-actions .primary-btn{grid-column:auto}.v5-guide-utility>div .soft-btn:nth-child(3){display:none}.v5-tutor-mode-switch button{min-height:36px}.v3-paper{padding-bottom:225px}}
@media(prefers-reduced-motion:reduce){.v3-guide-canvas{transition:none}.v3-guide-caption[data-active="1"]{animation:none}}

/* Wrong Book — paper-first redesign layer */
:root{--bg:#FAFAF8;--surface:#FFFDF8;--surface-2:#F4F4F0;--surface-3:#ECECE7;--ink:#222321;--muted:#73756F;--line:#E7E6E1;--accent:#557B56;--accent-2:#EDF3EC;--accent-3:#DDE8DB;--green:#4F805D;--green-bg:#EDF6EF;--red:#B85C4B;--red-bg:#FAEFEC;--amber:#9A782E;--amber-bg:#F8F2E4;--blue:#355C97;--blue-bg:#EEF2F8;--shadow:0 14px 34px rgba(47,48,43,.07);--radius:9px;--radius-sm:7px;--sidebar:212px;--paper:#FFFDF8;--paper-note:#F5EEDB;--graphite:#555650;--student-ink:#355C97}
html,body{background:var(--bg);color:var(--ink)}body{font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang TC","Noto Sans TC",sans-serif}button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid rgba(85,123,86,.2);outline-offset:2px}
.pf-app-shell{background:var(--bg)}.pf-sidebar{background:#F9F9F6;border-color:var(--line);padding:17px 12px}.pf-brand{padding:3px 6px 18px;gap:9px}.pf-brand .brand-mark{width:31px;height:31px;border-radius:6px;background:#2F322E;color:#FFFDF8;box-shadow:none;font-size:14px;transform:rotate(-1deg)}.pf-brand h1{font-size:17px;letter-spacing:.01em}.pf-brand small{font-size:10px;color:var(--muted);letter-spacing:.02em}.pf-sidebar .capture-btn{margin:0 1px 17px;padding:11px 12px;border-radius:8px;background:var(--accent);box-shadow:none;font-size:13px;font-weight:760}.pf-sidebar .capture-btn svg{width:17px;height:17px}.pf-core-nav{gap:1px}.pf-sidebar .nav-btn{border-radius:7px;padding:9px;color:#555851}.pf-sidebar .nav-btn:hover{background:#F0F0EC}.pf-sidebar .nav-btn.active{background:#EAEEE8;color:#345D39;font-weight:760}.pf-sidebar .sidebar-section-title{padding:17px 9px 6px;color:#989A94;letter-spacing:.08em;text-transform:none;font-size:10px}.pf-utility-nav .nav-btn{padding:8px 9px;font-size:12px;color:#6B6E68}.pf-utility-nav .nav-btn svg{width:16px;height:16px}.pf-profile{margin-top:auto;border-top:1px solid var(--line);padding:13px 6px 2px;display:flex;gap:9px;align-items:center}.pf-profile .avatar{width:31px;height:31px;background:#3C403A;font-size:12px}.pf-profile strong{display:block;font-size:12px}.pf-profile small{display:block;color:var(--muted);font-size:10px;margin-top:2px}.pf-topbar{height:58px;background:rgba(250,250,248,.91);border-color:var(--line);padding:0 22px;backdrop-filter:blur(16px)}.pf-topbar .crumb{font-size:12px;color:#777A74}.pf-topbar .ghost-btn,.pf-topbar .icon-btn{border-color:transparent;background:transparent;border-radius:7px}.pf-topbar .ghost-btn:hover,.pf-topbar .icon-btn:hover{background:#EFEFEB}.content{max-width:1480px;padding:26px 30px 80px}.panel{border-color:var(--line);border-radius:8px;box-shadow:none;background:#fff}.primary-btn{background:var(--accent);border-color:var(--accent);box-shadow:none;border-radius:8px;font-weight:760}.primary-btn:hover{filter:brightness(.97)}.soft-btn,.ghost-btn,.icon-btn,.danger-btn,.text-btn{border-radius:7px}.soft-btn{background:#F1F1ED}.text-btn{color:#4C6F4E}.callout{border-radius:7px;background:#F1F0E9;color:#565B50}.callout.success{background:var(--green-bg);color:#376E48}.callout.warn{background:var(--amber-bg);color:#775B21}.due{background:transparent;color:#656862;padding:0;border-radius:0}.due.red{background:transparent;color:var(--red)}.tag,.truth-label,.concept-code,.publisher{border-radius:5px}
.pf-home{max-width:1050px;margin:0 auto}.pf-home-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:20px}.pf-home-heading h1{margin:0;font-size:26px;line-height:1.05;letter-spacing:-.02em}.pf-home-heading p{margin:6px 0 0;color:var(--muted);font-size:14px}.pf-head-capture{border:1px solid var(--line);background:transparent;border-radius:7px;padding:8px 10px;display:inline-flex;gap:6px;align-items:center;color:#555851}.pf-head-capture svg{width:16px;height:16px}.pf-today-sheet{min-height:260px;display:grid;grid-template-columns:minmax(0,1fr) minmax(250px,.52fr);gap:28px;align-items:center;padding:30px 34px;margin-bottom:34px;background:linear-gradient(90deg,rgba(98,97,83,.055) 1px,transparent 1px) 27px 0/26px 100% no-repeat,radial-gradient(circle at 18% 15%,rgba(70,72,65,.025),transparent 36%),var(--paper);border:1px solid #E4E1D8;border-radius:4px;box-shadow:0 10px 26px rgba(54,53,45,.06);position:relative;overflow:hidden}.pf-today-sheet:before{content:"";position:absolute;left:14px;top:0;bottom:0;width:5px;background:radial-gradient(circle,#D7D4CB 2px,transparent 2.5px) 0 10px/5px 20px repeat-y;opacity:.8}.pf-sheet-copy{padding-left:12px;position:relative;z-index:1}.pf-kicker{font-size:11px;color:#76776F;letter-spacing:.08em}.pf-sheet-count{margin-top:11px;font-size:32px;font-weight:750;letter-spacing:-.035em}.pf-sheet-count em{color:var(--red);font-family:var(--hand);font-style:normal;font-size:42px;font-weight:600;display:inline-block;transform:rotate(-2deg);margin:0 2px}.pf-sheet-copy p{margin:7px 0 18px;color:var(--muted);font-size:13px}.pf-start-review{min-height:42px;padding:10px 15px}.pf-start-review span{font-size:16px}.pf-sheet-preview{min-width:0}.pf-paper-thumb{width:100%;border:0;background:transparent;text-align:left;padding:0;cursor:pointer;display:block;position:relative}.pf-paper-thumb>.pf-thumb-image{width:100%;height:150px;object-fit:cover;object-position:center top;border:1px solid #DFDDD3;background:#F8F6EF;display:none;box-shadow:0 5px 15px rgba(53,52,44,.07);transform:rotate(.6deg)}.pf-paper-thumb>.pf-thumb-image[src],.pf-paper-thumb>.pf-thumb-image.is-loaded{display:block}.pf-paper-thumb>.pf-thumb-image[src]+.pf-thumb-fallback,.pf-paper-thumb>.pf-thumb-image.is-loaded+.pf-thumb-fallback{display:none}.pf-thumb-fallback{min-height:150px;padding:18px 16px 22px 30px;border:1px solid #DFDDD3;background:linear-gradient(180deg,rgba(255,255,255,.15),transparent),#FFFDF8;position:relative;box-shadow:0 5px 15px rgba(53,52,44,.06);transform:rotate(.6deg);overflow:hidden}.pf-thumb-number{position:absolute;left:12px;top:17px;font-family:Georgia,serif;font-size:12px}.pf-thumb-fallback p{margin:0;color:#383A36;font-family:Georgia,"Noto Serif TC",serif;font-size:11px;line-height:1.65}.pf-thumb-ink{position:absolute;right:18px;bottom:12px;color:var(--red);font-family:var(--hand);font-size:28px;transform:rotate(-11deg)}.pf-thumb-caption{display:flex;flex-direction:column;gap:2px;margin-top:8px}.pf-thumb-caption strong{font-size:12px}.pf-thumb-caption span{font-size:10px;color:var(--muted)}.pf-list-section{margin-top:28px}.pf-section-head{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:8px}.pf-section-head h2{margin:0;font-size:15px;font-weight:750}.pf-section-head .text-btn{font-size:11px;padding:4px 0}.pf-upcoming-list{display:grid}.pf-upcoming-row{appearance:none;width:100%;border:0;border-bottom:1px solid var(--line);background:transparent;display:grid;grid-template-columns:90px minmax(0,1fr) 76px;gap:14px;align-items:center;padding:14px 4px;text-align:left;cursor:pointer}.pf-upcoming-row:hover,.pf-problem-row:hover{background:#F7F7F3}.pf-row-symbol{display:flex;align-items:center;gap:7px;color:#6F726C;font-size:11px}.pf-row-symbol i,.pf-subject-dot,.pf-problem-dot{width:7px;height:7px;border-radius:50%;background:var(--subject-color,#6E766B);display:inline-block;flex:0 0 auto}.pf-row-main strong{display:block;font-size:13px;font-weight:720}.pf-row-main small{display:block;color:var(--muted);font-size:10px;margin-top:4px}.pf-row-status{justify-self:end;font-size:11px;color:#777972;white-space:nowrap}.pf-row-status.is-today{color:var(--red)}.pf-row-status b{font-size:14px;font-weight:400;margin-left:3px}.pf-recent-section{margin-top:34px}.pf-recent-item{display:grid;grid-template-columns:190px minmax(0,1fr);gap:18px;align-items:center;padding:14px 0}.pf-recent-item .pf-thumb-caption{display:none}.pf-recent-item .pf-paper-thumb>.pf-thumb-image,.pf-recent-item .pf-thumb-fallback{height:104px;min-height:104px}.pf-recent-copy{border:0;background:transparent;text-align:left;padding:0;cursor:pointer}.pf-recent-copy strong{display:block;font-size:14px}.pf-recent-copy span{display:block;color:var(--muted);font-size:11px;margin-top:5px}.pf-recent-copy small{display:block;color:#4E714F;font-size:11px;margin-top:12px}.pf-home-footer{margin:38px 0 0;color:#A0A19B;font-size:10px;text-align:center}.pf-empty-row{padding:20px 2px;color:var(--muted);font-size:12px}.pf-empty-paper{border:1px dashed #D8D5CB;background:#FFFDF8;min-height:140px;display:grid;place-items:center;color:#95978F;font-size:11px}
.pf-index{max-width:1100px;margin:0 auto}.pf-index-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:18px}.pf-index-head h1{font-size:25px;margin:0}.pf-index-head p{margin:5px 0 0;color:var(--muted);font-size:13px}.pf-subject-strip{display:flex;gap:2px;overflow:auto;border-bottom:1px solid var(--line);scrollbar-width:none}.pf-subject-strip::-webkit-scrollbar{display:none}.pf-subject-strip button{border:0;background:transparent;padding:9px 10px 10px;display:flex;align-items:center;gap:6px;white-space:nowrap;font-size:11px;color:#757870;border-bottom:2px solid transparent;cursor:pointer}.pf-subject-strip button.active{color:#2F332E;border-bottom-color:#5C745C;font-weight:760}.pf-index-summary{display:flex;align-items:baseline;gap:9px;padding:18px 2px 7px}.pf-index-summary strong{font-size:15px}.pf-index-summary span{font-size:10px;color:var(--muted)}.pf-problem-list{border-top:1px solid var(--line)}.pf-problem-row{width:100%;border:0;border-bottom:1px solid var(--line);background:transparent;display:grid;grid-template-columns:14px minmax(0,1fr) 118px;gap:10px;align-items:center;text-align:left;padding:14px 8px;cursor:pointer}.pf-problem-title strong{font-size:13px;display:block}.pf-problem-title small{font-size:10px;color:var(--muted);display:block;margin-top:4px}.pf-problem-state{text-align:right}.pf-problem-state small{display:block;color:#898B85;font-size:9px}.pf-problem-state b{display:block;color:#585B55;font-size:10px;margin-top:4px;font-weight:650}.pf-empty-index{padding:70px 20px;text-align:center;border-bottom:1px solid var(--line)}.pf-empty-index strong{display:block;font-size:17px}.pf-empty-index span{display:block;color:var(--muted);margin:7px 0 16px;font-size:12px}
body.pf-workspace-active .content{max-width:none}.pf-problem-workspace{max-width:1360px;margin:0 auto}.pf-problem-head{min-height:48px;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:12px;border-bottom:1px solid var(--line);margin:-8px 0 14px;padding:0 2px 9px}.pf-back{border:0;background:transparent;padding:7px 3px;cursor:pointer;color:#555851;font-size:12px}.pf-problem-identity{min-width:0}.pf-problem-identity strong{display:block;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.pf-problem-identity span{display:block;font-size:9px;color:var(--muted);margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.pf-problem-actions{display:flex;gap:5px}.pf-problem-actions .soft-btn{font-size:10px;min-height:32px;padding:6px 9px}.pf-problem-actions .icon-btn{width:32px;height:32px;min-height:32px}.pf-workspace-layout{display:grid;grid-template-columns:minmax(560px,1fr) 300px;gap:18px;align-items:start}.pf-paper-column{min-width:0}.pf-paper-column>.panel{border:0;background:transparent;border-radius:0}.pf-paper-column>.panel>.panel-head{padding:0 2px 8px;border:0}.pf-paper-column>.panel>.panel-head h3{font-size:11px;color:#666962;font-weight:680}.pf-paper-column>.panel>.panel-head .meta{font-size:9px;color:#969891}.paper{margin:0;border:1px solid #DDDAD0;border-radius:2px;background:var(--paper);min-height:620px;overflow:hidden;box-shadow:0 10px 28px rgba(50,49,42,.07)}.paper:after{content:"";position:absolute;inset:0;pointer-events:none;z-index:1;opacity:.3;background:radial-gradient(circle at 20% 10%,rgba(70,68,57,.035),transparent 28%),linear-gradient(90deg,rgba(120,115,95,.012),transparent 5%,transparent 95%,rgba(120,115,95,.015))}.paper-demo{min-height:620px;padding:42px 54px 120px;background:linear-gradient(180deg,rgba(255,255,255,.18),transparent 35%),var(--paper);position:relative;z-index:2}.paper-demo h4{font-family:Georgia,"Noto Serif TC","PingFang TC",serif;font-weight:600;font-size:17px;line-height:1.85;color:#2B2D29;max-width:900px}.paper-demo .options{gap:2px;margin-top:16px}.paper-option{position:relative;border:0;border-radius:0;background:transparent;padding:9px 8px 9px 3px;font-family:Georgia,"Noto Serif TC","PingFang TC",serif;font-size:14px;line-height:1.7;color:#333530}.paper-option.student{border:0;background:transparent;color:#2F456C}.paper-option.student:after{content:"原選";position:absolute;right:6px;top:8px;color:var(--student-ink);font-family:var(--hand);font-size:13px;transform:rotate(-4deg);opacity:.82}.hand-note{color:var(--student-ink);font-size:18px;margin:20px 4px;position:relative}.hand-note:after{content:"";position:absolute;width:78px;height:2px;background:rgba(53,92,151,.55);left:0;bottom:-3px;transform:rotate(-1deg)}.scan-photo{background:#F7F5EE;object-fit:contain}.scan-text{background:#F8F6EF;border-top:1px solid #E2DFD5;color:#85877F;font-size:10px;padding:8px 11px}.canvas-layer{z-index:6}.ai-overlay-note,.v3-ai-note{background:rgba(245,238,219,.94)!important;border:1px solid #DED3B8!important;color:#585348!important;border-radius:4px!important;box-shadow:0 5px 12px rgba(73,64,45,.07)!important;font-family:var(--hand)!important;font-size:14px!important}.ai-overlay-note:before{display:none!important}.paper-toolbar{left:10px;right:10px;bottom:9px}.toolset{border-color:#DFDDD5;border-radius:8px;background:rgba(255,253,248,.95);box-shadow:0 6px 16px rgba(50,49,43,.06);padding:4px}.tool{border-radius:5px}.tool.active{background:#E8EEE7;color:#3F6A44}.v3-paper .paper-toolbar>.toolset:last-child{display:none}.v5-tutor-dock{left:12px;right:auto!important;width:min(430px,calc(100% - 24px));bottom:58px!important;border:1px solid #DDDAD0!important;border-radius:8px!important;background:rgba(255,253,248,.97)!important;box-shadow:0 8px 24px rgba(52,50,43,.09)!important;padding:7px!important;gap:5px!important}.v5-tutor-mode-switch{display:flex!important;width:max-content;background:transparent!important;padding:0!important;gap:1px!important}.v5-tutor-mode-switch button{min-height:27px!important;padding:4px 7px!important;border-radius:5px!important;font-size:9px!important;background:transparent!important;color:#85877F!important}.v5-tutor-mode-switch button.active{background:#ECEDE8!important;color:#454843!important;box-shadow:none!important}.v5-tutor-stage-head>span{color:#6B6D66!important;background:#EFEEE8!important;border-radius:5px!important}.v5-tutor-stage-head strong{font-size:9px!important}.v5-tutor-stage p{font-size:11px!important;color:#4D504B!important;line-height:1.42!important}.v5-tutor-actions .primary-btn,.v5-tutor-actions .soft-btn{min-height:31px!important;padding:6px 9px!important;font-size:9px!important}.v5-link-btn{color:#777970!important}.v5-guide-utility{grid-template-columns:1fr auto!important;border-color:#E5E2D9!important;padding-top:4px!important}.v5-guide-utility .v3-guide-caption{display:none}.v5-guide-utility>[data-guide-status]{color:#999B94!important}.v5-guide-utility>div .soft-btn{background:transparent!important;border:0!important}
.pf-context-rail{display:grid;gap:7px;min-width:0}.pf-disclosure{border-top:1px solid var(--line);background:transparent}.pf-disclosure:last-child{border-bottom:1px solid var(--line)}.pf-disclosure>summary{list-style:none;cursor:pointer;padding:11px 3px;display:flex;justify-content:space-between;align-items:center;font-size:11px;font-weight:720;color:#5B5E57}.pf-disclosure>summary::-webkit-details-marker{display:none}.pf-disclosure>summary span{font-size:14px;font-weight:400;color:#969890;transition:.15s}.pf-disclosure[open]>summary span{transform:rotate(45deg)}.pf-disclosure-body{padding:0 0 9px}.pf-disclosure-body>.panel{border:0;border-radius:0;background:transparent}.pf-disclosure-body>.panel>.panel-head{padding:5px 3px 8px;border:0}.pf-disclosure-body>.panel>.panel-head h3{display:none}.pf-disclosure-body>.panel>.panel-head .meta{font-size:9px}.pf-disclosure-body .correction-list,.pf-disclosure-body .insight-box,.pf-disclosure-body .mapping,.pf-disclosure-body .tutor{padding:5px 3px}.pf-disclosure-body .statement{grid-template-columns:24px minmax(0,1fr);gap:7px}.pf-disclosure-body .statement-actions{grid-column:2;display:flex}.pf-disclosure-body .corrected-input,.pf-disclosure-body textarea,.pf-disclosure-body input{border-radius:5px;background:#FFFDF8;border-color:#DEDCD4}.pf-disclosure-body .mapping-row{grid-template-columns:70px 1fr}.pf-disclosure-body .callout{font-size:10px;padding:9px}.pf-disclosure-body .tutor-answer{border-radius:5px;background:#FFFDF8}.pf-disclosure-body .primary-btn,.pf-disclosure-body .soft-btn,.pf-disclosure-body .text-btn{font-size:9px;min-height:30px;padding:5px 8px}
.pf-recognition{border:1px solid #DEDCD4;background:#FFFDF8;padding:12px;border-radius:6px}.pf-recognition.is-uncertain{border-color:#D9C9A1;background:#FFFDF6}.pf-recognition-head{margin-bottom:10px}.pf-recognition-head>span{display:block;font-size:12px;font-weight:750}.pf-recognition-head small{display:block;color:#887A58;font-size:9px;margin-top:4px;line-height:1.45}.pf-recognition-question{display:grid;gap:10px}.pf-recognition-question>div{border-top:1px solid #E7E2D6;padding-top:9px}.pf-recognition-question strong{font-size:10px;display:block;margin-bottom:7px}.pf-recognition .chips{gap:5px}.pf-recognition .chip{width:34px;min-width:34px;height:34px;border-radius:5px;background:#FFF;border-color:#DCDAD2}.pf-recognition .chip.on{background:var(--green);border-color:var(--green)}.pf-recognition .chip.student.on{background:var(--student-ink);border-color:var(--student-ink)}.pf-recognition-summary{font-size:10px;line-height:1.6;color:#5D605A}.pf-recognition-summary details{margin-top:8px}.pf-recognition-summary summary,.pf-ocr-details summary{cursor:pointer;color:#657965;font-size:9px}.pf-ocr-details{border-top:1px solid #E7E2D6;margin-top:10px;padding-top:8px}.pf-ocr-editor{display:grid;gap:7px;margin-top:8px}.pf-ocr-editor label{font-size:9px;color:#73756F}.pf-ocr-editor textarea,.pf-ocr-editor input{width:100%;border:1px solid #DEDCD4;border-radius:5px;padding:7px;background:#fff}.pf-ocr-editor textarea{min-height:70px}.pf-ocr-editor label:not(:first-child){display:grid;grid-template-columns:18px 1fr;align-items:center}.pf-confirm-scan{width:100%;margin-top:11px;min-height:38px;font-size:10px}
.pf-scan-backdrop{background:rgba(30,31,28,.42);backdrop-filter:blur(3px)}.pf-scan-modal{width:min(560px,100%);border-radius:10px;background:#FAFAF8}.pf-scan-modal .modal-head{padding:14px 15px;border-color:var(--line)}.pf-scan-modal .modal-head>div h3{margin:0;font-size:15px}.pf-scan-modal .modal-head>div p{margin:3px 0 0;color:var(--muted);font-size:10px}.pf-scan-modal .modal-body{padding:14px}.pf-camera-stage{min-height:360px;background:#242622;position:relative;overflow:hidden;border-radius:6px;display:grid;place-items:center}.pf-camera-empty{color:#F0F0EB;display:grid;place-items:center;text-align:center;gap:8px;padding:50px;position:absolute;inset:0}.pf-camera-empty svg{width:30px;height:30px;opacity:.9}.pf-camera-empty strong{font-size:13px}.pf-camera-empty small{font-size:9px;color:#C8CAC4;line-height:1.5;max-width:300px}.pf-frame-corner{position:absolute;width:34px;height:34px;border-color:rgba(244,244,236,.7);border-style:solid}.pf-frame-corner.a{left:18px;top:18px;border-width:1px 0 0 1px}.pf-frame-corner.b{right:18px;top:18px;border-width:1px 1px 0 0}.pf-frame-corner.c{left:18px;bottom:18px;border-width:0 0 1px 1px}.pf-frame-corner.d{right:18px;bottom:18px;border-width:0 1px 1px 0}.pf-scan-modal .modal-preview{display:none;position:absolute;inset:0;width:100%;height:100%;max-height:none;object-fit:contain;border:0;border-radius:0;margin:0;background:#1E201D;z-index:2}.pf-scan-modal.has-photo .pf-camera-empty{display:none}.pf-scan-actions{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin-top:9px}.pf-scan-actions button{min-height:40px}.pf-scan-foot{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--line);margin-top:12px;padding-top:10px}.pf-scan-foot .text-btn{font-size:9px}.pf-scan-foot .primary-btn{min-width:128px}.pf-scan-foot .primary-btn:disabled{opacity:.4;cursor:not-allowed}.pf-processing{position:fixed;inset:0;z-index:190;background:rgba(250,250,248,.88);backdrop-filter:blur(6px);display:grid;place-items:center;padding:20px}.pf-processing-sheet{width:min(460px,100%);border:1px solid #E0DED5;background:#FFFDF8;border-radius:6px;padding:18px;display:grid;grid-template-columns:24px 1fr;gap:12px;box-shadow:0 12px 34px rgba(50,49,43,.08)}.pf-processing-spinner{width:18px;height:18px;border-radius:50%;border:2px solid #D8DED5;border-top-color:var(--accent);animation:pfSpin .8s linear infinite}.pf-processing-sheet strong{font-size:13px}.pf-processing-sheet p{margin:5px 0 0;color:var(--muted);font-size:10px;line-height:1.55}@keyframes pfSpin{to{transform:rotate(360deg)}}
.pf-review{max-width:1150px;margin:0 auto}.pf-review-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:20px}.pf-review-head h1{margin:0;font-size:25px}.pf-review-head p{margin:5px 0 0;color:var(--muted);font-size:12px}.pf-mode-switch{background:#EFEEE9;border-radius:7px;padding:2px}.pf-mode-switch button{border-radius:5px;color:#74766F}.pf-mode-switch button.active{color:#353833;box-shadow:none;background:#FFFDF8}.pf-review-layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:22px}.pf-review-queue{border-right:1px solid var(--line);padding-right:14px}.pf-review-group-title{font-size:10px;color:#8A8C85;padding:4px 5px 8px}.pf-review-row{width:100%;border:0;border-top:1px solid var(--line);background:transparent;text-align:left;padding:10px 5px;cursor:pointer}.pf-review-row>span{display:block;font-size:9px;color:#8A8C85}.pf-review-row strong{display:block;font-size:11px;margin-top:2px}.pf-review-row small{display:block;font-size:9px;color:#8A8C85;margin-top:4px}.pf-review-row.active{border-left:2px solid var(--accent);padding-left:8px;background:#F6F7F3}.pf-review-paper{border:1px solid #DDDAD0;background:#FFFDF8;min-height:520px;padding:34px 40px;box-shadow:0 8px 24px rgba(50,49,43,.05)}.pf-review-kind{font-size:9px;color:#85877F;letter-spacing:.08em;margin-bottom:15px}.pf-review-paper .redo-option{border:0;border-bottom:1px solid #E5E1D8;border-radius:0;background:transparent;padding:11px 5px;margin:0}.pf-review-paper .redo-option.selected{background:#EEF2F8;border-color:#D3DCEB}.pf-review-paper .redo-option.correct{background:#EDF6EF;border-color:#D1E4D5}.pf-review-paper .redo-option.incorrect{background:#FAEFEC;border-color:#E9D2CC}.pf-review-paper .fill-card{padding:10px 0}.pf-review-paper .fill-sentence{font-family:Georgia,"Noto Serif TC",serif;font-size:20px}
.v5-concept-outline,.v5-concept-graph,.v5-concept-detail{border-color:var(--line)!important;border-radius:6px!important;box-shadow:none!important;background:#FFFEFA!important}.v5-concept-outline{background:#F8F8F5!important}.v5-outline-node,.v5-outline-toggle{border-radius:4px!important}.v5-outline-node.is-selected{background:#E9EEE7!important;color:#385E3D!important}.v5-node-state-dot.is-due{background:var(--red)!important}.v5-node-state-dot.is-has-mistakes{background:#A17645!important}.v5-node-state-dot.is-mastered{background:var(--green)!important}.v5-graph-node{border-radius:6px!important;box-shadow:none!important}.v5-graph-node.is-selected{border-color:#668467!important;box-shadow:0 0 0 2px rgba(85,123,86,.12)!important}.v5-fact-card{border-radius:6px!important;box-shadow:none!important;border-color:var(--line)!important;background:#FFFDF8!important}.v5-real-metrics>div{border-radius:4px!important;background:#F2F2EE!important}.stat-card,.subject-card,.metric,.note-card,.publisher-field,.mind-point-v2,.mind-tree-v2,.mind-branch-v2{border-radius:7px}.subject-card{box-shadow:none!important}.stat-card{background:#F2F2EE}.subject-card:hover{transform:none;box-shadow:none}.tw-badge{border-radius:5px;background:#F0F0EB;color:#62655E;border-color:#E0DFD9}.mind-chapter-btn,.mind-point-v2,.mind-root-v2,.mind-branch-v2,.mind-tree-v2{border-radius:7px}.mind-chapter-btn.active{background:#EAEFE8;border-color:#D7E0D5}.mind-chapter-btn.active .mind-chapter-no{background:var(--accent)}.mind-chapter-progress i,.section-progress i{background:var(--accent)}.mind-answer-v2:focus{border-bottom-color:var(--accent)}.point-kind{border-radius:4px}.mind-completion-ring{background:conic-gradient(var(--accent) calc(var(--p)*1%),#ECECE6 0)}.pf-drawer{background:#FAFAF8!important}.pf-drawer-head{display:flex;align-items:center;justify-content:space-between;padding:4px 7px 14px;border-bottom:1px solid var(--line);margin-bottom:8px}.pf-drawer-head strong{font-size:16px}.pf-drawer-head .icon-btn{border:0;background:transparent}
@media (min-width:861px) and (max-width:1180px){body.pf-workspace-active .app-shell{display:block}body.pf-workspace-active .sidebar{display:none}body.pf-workspace-active .content{padding:14px 18px 58px}body.pf-workspace-active .pf-topbar{height:50px}.pf-workspace-layout{grid-template-columns:1fr}.pf-context-rail{max-width:760px;margin:8px auto 0;width:100%}.paper{min-height:650px}.paper-demo{min-height:650px;padding:44px 58px 125px}.v5-tutor-dock{width:min(390px,calc(100% - 24px))}}
@media (max-width:860px){.pf-topbar{height:52px;padding:0 10px}.pf-topbar .crumb{max-width:62vw;font-size:10px}.pf-topbar .topbar-actions .icon-btn{display:none}.content{padding:18px 13px calc(86px + env(safe-area-inset-bottom))}.pf-home{max-width:none}.pf-home-heading{margin-bottom:15px}.pf-home-heading h1{font-size:32px}.pf-home-heading p{font-size:12px;margin-top:7px}.pf-head-capture{display:none}.pf-today-sheet{grid-template-columns:minmax(0,1fr) 118px;gap:14px;min-height:220px;padding:23px 16px 22px 29px;margin:0 -1px 27px}.pf-today-sheet:before{left:10px}.pf-sheet-copy{padding-left:2px}.pf-sheet-count{font-size:25px}.pf-sheet-count em{font-size:35px}.pf-sheet-copy p{font-size:10px;line-height:1.5;margin:6px 0 14px}.pf-kicker{font-size:9px}.pf-start-review{min-height:38px;font-size:11px;padding:8px 11px}.pf-paper-thumb>.pf-thumb-image,.pf-thumb-fallback{min-height:112px;height:112px}.pf-thumb-fallback{padding:12px 9px 16px 20px}.pf-thumb-fallback p{font-size:8px;line-height:1.5}.pf-thumb-number{font-size:9px;left:8px;top:12px}.pf-thumb-ink{font-size:20px;right:9px;bottom:8px}.pf-thumb-caption strong{font-size:9px}.pf-thumb-caption span{font-size:8px}.pf-list-section{margin-top:24px}.pf-section-head h2{font-size:14px}.pf-upcoming-row{grid-template-columns:55px minmax(0,1fr) 58px;gap:8px;padding:13px 2px}.pf-row-symbol{font-size:9px;gap:5px}.pf-row-main strong{font-size:11px}.pf-row-main small{font-size:8px;line-height:1.4}.pf-row-status{font-size:9px}.pf-recent-item{grid-template-columns:115px minmax(0,1fr);gap:12px}.pf-recent-item .pf-paper-thumb>.pf-thumb-image,.pf-recent-item .pf-thumb-fallback{height:78px;min-height:78px}.pf-recent-copy strong{font-size:11px}.pf-recent-copy span,.pf-recent-copy small{font-size:8px}.pf-home-footer{margin-top:30px}.mobile-nav.pf-mobile-nav{grid-template-columns:repeat(5,1fr);padding:5px max(6px,env(safe-area-inset-right)) calc(5px + env(safe-area-inset-bottom)) max(6px,env(safe-area-inset-left));background:rgba(250,250,248,.97);border-color:#E2E1DB}.mobile-nav.pf-mobile-nav button,.mobile-nav.pf-mobile-nav .capture-mobile{width:auto!important;height:auto!important;min-height:52px!important;margin:0!important;border-radius:0!important;background:transparent!important;box-shadow:none!important;color:#74776F!important;font-size:9px!important;padding:4px 0!important}.mobile-nav.pf-mobile-nav button svg,.mobile-nav.pf-mobile-nav .capture-mobile svg{width:19px!important;height:19px!important}.mobile-nav.pf-mobile-nav button.active{color:#3F6844!important;font-weight:780}.mobile-nav.pf-mobile-nav .capture-mobile:active{background:#F0F1EC!important}.pf-index-head{align-items:flex-start;margin-bottom:12px}.pf-index-head h1{font-size:30px}.pf-index-head p{font-size:11px}.pf-index-head>.primary-btn{display:none}.pf-subject-strip{margin:0 -13px;padding:0 8px}.pf-problem-row{grid-template-columns:12px minmax(0,1fr) 80px;padding:13px 2px}.pf-problem-title strong{font-size:11px}.pf-problem-title small{font-size:8px}.pf-problem-state small,.pf-problem-state b{font-size:8px}body.pf-workspace-active .pf-topbar{display:none}body.pf-workspace-active .content{padding:0 0 calc(80px + env(safe-area-inset-bottom))}.pf-problem-head{position:sticky;top:0;z-index:45;background:rgba(250,250,248,.96);backdrop-filter:blur(14px);min-height:52px;margin:0;padding:6px 9px;border-bottom:1px solid var(--line)}.pf-back{font-size:0;min-width:38px}.pf-back:first-letter{font-size:16px}.pf-back span{display:none}.pf-problem-identity strong{font-size:11px}.pf-problem-identity span{font-size:8px}.pf-problem-actions .soft-btn{display:none}.pf-workspace-layout{display:block}.pf-paper-column>.panel>.panel-head{display:none}.paper{border-width:0 0 1px;border-radius:0;box-shadow:none;min-height:calc(100vh - 132px);width:100%;margin:0}.paper-demo{min-height:calc(100vh - 132px);padding:28px 18px 205px}.paper-demo h4{font-size:15px;line-height:1.75}.paper-option{font-size:12px;padding:8px 3px}.scan-photo{max-height:none}.scan-text{font-size:8px}.paper-toolbar{left:7px;right:7px;bottom:174px!important}.toolset{border-radius:7px}.tool{min-width:36px;height:36px}.v5-tutor-dock{position:fixed!important;left:7px!important;right:7px!important;width:auto!important;bottom:calc(67px + env(safe-area-inset-bottom))!important;z-index:70;max-height:36vh!important;overflow:auto!important;border-radius:9px!important;padding:7px 8px!important;box-shadow:0 8px 26px rgba(38,39,34,.12)!important}.v5-tutor-mode-switch{position:static!important}.v5-tutor-stage p{font-size:11px!important}.v5-tutor-actions{display:grid!important;grid-template-columns:1fr 1fr!important}.v5-tutor-actions .primary-btn{grid-column:1/-1!important;min-height:40px!important;font-size:10px!important}.v5-tutor-actions .soft-btn,.v5-tutor-actions .v5-link-btn{min-height:34px!important}.v5-guide-utility{display:none!important}.v3-paper{padding-bottom:0!important}.pf-context-rail{padding:9px 11px 12px}.pf-recognition{margin:1px 0 9px}.pf-disclosure>summary{padding:12px 2px;font-size:11px}.pf-disclosure-body{padding-bottom:4px}.pf-review-head{align-items:flex-start;flex-direction:column;margin-bottom:14px}.pf-review-head h1{font-size:30px}.pf-review-head p{font-size:10px;line-height:1.5}.pf-review-layout{display:block}.pf-review-queue{border:0;border-bottom:1px solid var(--line);display:flex;overflow:auto;gap:4px;padding:0 0 9px;margin-bottom:12px}.pf-review-group-title{display:none}.pf-review-row{flex:0 0 145px;border:1px solid var(--line);border-radius:6px;padding:8px;background:#FAFAF8}.pf-review-row.active{border:1px solid #BFCBBD;background:#EFF3ED;padding-left:8px}.pf-review-paper{min-height:430px;padding:24px 15px;border-radius:2px;box-shadow:none}.pf-review-paper h2{font-size:17px!important;line-height:1.55}.pf-review-paper .redo-option{font-size:12px}.pf-review-paper .fill-sentence{font-size:17px}.pf-scan-backdrop{padding:0;align-items:end}.pf-scan-modal{width:100%;max-height:94vh;border-radius:12px 12px 0 0}.pf-camera-stage{min-height:48vh;border-radius:5px}.pf-scan-modal .modal-body{padding:10px}.pf-scan-actions{grid-template-columns:1fr 1fr}.pf-scan-foot{padding-bottom:env(safe-area-inset-bottom)}.pf-processing{padding:12px}}
@media (max-width:430px){.pf-today-sheet{grid-template-columns:minmax(0,1fr) 105px;padding-right:12px}.pf-sheet-count{font-size:23px}.pf-sheet-count em{font-size:33px}.pf-paper-thumb>.pf-thumb-image,.pf-thumb-fallback{min-height:104px;height:104px}.pf-upcoming-row{grid-template-columns:50px minmax(0,1fr) 52px}.paper-demo{padding-left:15px;padding-right:15px}.pf-recognition-question{gap:8px}}
@media (prefers-reduced-motion:reduce){.pf-processing-spinner{animation:none}.pf-disclosure>summary span{transition:none}}