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var(--green);align-items:center;gap:4px;min-height:30px;margin:-5px -7px -5px -5px;display:inline-flex}@supports (color:color-mix(in lab, red, red)){.deck-progress-trigger{border:1px solid color-mix(in srgb, var(--green) 32%, var(--line))}}.deck-progress-trigger{background:var(--green-soft);color:var(--green-dark);font:inherit;white-space:nowrap;cursor:pointer;border-radius:999px;padding:4px 8px;font-weight:700;transition:border-color .16s,background .16s,transform .16s}.deck-progress-trigger:hover{border-color:var(--green);background:var(--green-soft)}@supports (color:color-mix(in lab, red, red)){.deck-progress-trigger:hover{background:color-mix(in srgb, var(--green-soft) 76%, var(--surface))}}.deck-progress-trigger:hover{transform:translateY(-1px)}.deck-progress-trigger:focus-visible{outline:3px solid var(--green)}@supports (color:color-mix(in lab, red, red)){.deck-progress-trigger:focus-visible{outline:3px solid color-mix(in srgb, var(--green) 32%, transparent)}}.deck-progress-trigger:focus-visible{outline-offset:2px}.deck-progress-trigger:active{transform:translateY(0)}.study-link{background:var(--ink);color:#fff;border-radius:13px;align-items:center;gap:9px;min-height:44px;margin:0 12px;padding:0 13px;font-size:.84rem;font-weight:800;display:flex}.study-arrow{margin-left:auto}.deck-actions{border-top:1px solid var(--line);margin-top:12px;display:flex}.deck-action{cursor:pointer;border-right:1px solid var(--line);min-height:40px;color:var(--ink-soft);background:0 0;flex:1;justify-content:center;align-items:center;gap:6px;font-size:.75rem;font-weight:700;display:flex}.deck-action:last-child{border-right:0}.deck-action:hover{background:var(--canvas);color:var(--ink)}.deck-action-danger:hover{background:var(--danger-soft);color:var(--danger)}.share-modal-body{min-height:190px}.share-summary,.share-receipt{text-align:center;flex-direction:column;align-items:center;display:flex}.share-summary strong{font-family:Georgia,Yu Mincho,serif;font-size:1.35rem;font-weight:500}.share-summary>span{color:var(--green);margin-top:6px;font-size:.78rem;font-weight:800}.share-summary p,.share-receipt p{color:var(--ink-soft);margin:20px 0 0;font-size:.78rem;line-height:1.75}.share-receipt>span{color:var(--ink-soft);letter-spacing:.12em;text-transform:uppercase;font-size:.7rem;font-weight:800}.share-code{color:var(--green-dark);letter-spacing:.07em;-webkit-user-select:all;user-select:all;margin-top:7px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:clamp(2.25rem,11vw,3.35rem);font-weight:800;line-height:1.2}.share-receipt .button{margin-top:22px}.share-code-input{letter-spacing:.12em;text-align:center;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:1.25rem;font-weight:750}.notice{border-radius:var(--radius-sm);border:1px solid;margin:0 0 20px;padding:12px 15px;font-size:.85rem;font-weight:650}.notice-info{color:#1f5962;background:#e6f2f4;border-color:#bad5db}.notice-success{background:var(--green-soft);color:var(--green-dark);border-color:#b5d9cf}.notice-error{background:var(--danger-soft);color:#812626;border-color:#e5bcb8}.summary-share-toast{z-index:90;width:min(520px,100% - 32px);box-shadow:var(--shadow-md);text-align:center;margin:0;position:fixed;bottom:24px;left:50%;transform:translate(-50%)}.notice-row{justify-content:space-between;align-items:center;gap:20px;display:flex}.modal-backdrop{z-index:100;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#141a198f;place-items:center;padding:24px;display:grid;position:fixed;inset:0;overflow-y:auto}.modal{border-radius:var(--radius-md);background:var(--surface);width:min(100%,600px);max-height:calc(100vh - 48px);box-shadow:var(--shadow-md);border:1px solid #fff6;overflow-y:auto}.modal-small{width:min(100%,470px)}.modal-large{width:min(100%,760px)}.modal-heading{border-bottom:1px solid var(--line);justify-content:space-between;align-items:flex-start;gap:20px;padding:25px 26px 20px;display:flex}.modal-heading>.icon-button{flex-shrink:0}.modal-heading h2{letter-spacing:-.03em;margin:0;font-family:Georgia,Yu Mincho,serif;font-size:1.55rem;font-weight:500}.modal-heading p{color:var(--ink-soft);margin:5px 0 0;font-size:.8rem}.modal-body{padding:25px 26px}.deck-progress-modal-body{gap:22px;display:grid}.progress-donut-wrap{width:min(100%,340px);margin:-8px auto -2px}.progress-donut{width:100%;height:auto;display:block}.progress-donut-track,.progress-donut-segment{fill:none;stroke-width:58px}.progress-donut-track{stroke:var(--line)}@supports (color:color-mix(in lab, red, red)){.progress-donut-track{stroke:color-mix(in srgb, var(--line) 72%, var(--surface))}}.progress-donut-segment{transition:opacity .16s}.progress-donut-segment-label,.progress-donut-center-label,.progress-donut-center-value{text-anchor:middle;dominant-baseline:middle}.progress-donut-segment-label{fill:#fff;paint-order:stroke;stroke:#0000001a;stroke-width:2px;font-size:15px;font-weight:800}.progress-donut-segment-label.is-dark{fill:#27302e;stroke:#ffffff1f}.progress-donut-center-label{fill:var(--ink-soft);font-size:14px;font-weight:700}.progress-donut-center-value{fill:var(--ink);letter-spacing:-.05em;font-size:30px;font-weight:800}.progress-legend{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 20px;display:grid}.progress-legend-item{align-items:flex-start;gap:10px;min-width:0;display:flex}.progress-legend-swatch{border-radius:50%;flex:none;width:13px;height:13px;margin-top:4px;box-shadow:inset 0 0 0 1px #0000000f}.progress-legend-item div{gap:2px;min-width:0;display:grid}.progress-legend-item strong{font-size:.86rem}.progress-legend-item span:not(.progress-legend-swatch){color:var(--ink-soft);font-size:.78rem}.progress-legend-item b{color:var(--ink);font-size:.9rem}.progress-empty{text-align:center;justify-items:center;gap:8px;padding:38px 20px 28px;display:grid}.progress-empty>span{background:var(--green-soft);width:54px;height:54px;color:var(--green-dark);border-radius:50%;place-items:center;display:grid}.progress-empty strong{margin-top:4px;font-size:1.05rem}.progress-empty p{color:var(--ink-soft);margin:0;font-size:.82rem}.progress-explanation{background:var(--canvas-deep);color:var(--ink-soft);border-radius:13px;margin:0;padding:13px 15px;font-size:.76rem;line-height:1.7}.modal-actions{border-top:1px solid var(--line);justify-content:flex-end;padding:18px 26px 24px}.storage-estimate{gap:22px;display:grid}.storage-estimate-status{min-height:220px;color:var(--ink-soft);align-content:center;place-items:center;gap:12px;font-size:.84rem;display:grid}.storage-estimate-spinner{color:var(--green);animation:.8s linear infinite spin}.storage-estimate-error{text-align:center;align-content:center;place-items:center;gap:18px;min-height:220px;display:grid}.storage-estimate-error strong{font-size:.95rem}.storage-estimate-error p{max-width:360px;color:var(--ink-soft);margin:5px 0 0;font-size:.8rem}.storage-metrics{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;display:grid}.storage-metric{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--canvas);text-align:center;min-width:0;padding:17px 14px 15px}.storage-metric>span{color:var(--ink-soft);white-space:nowrap;margin-bottom:7px;font-size:.7rem;font-weight:750;display:block}.storage-metric strong{letter-spacing:-.04em;font-family:Georgia,serif;font-size:clamp(1.3rem,4vw,1.65rem);font-weight:500;line-height:1}.storage-metric small{color:var(--ink-soft);margin-left:4px;font-size:.65rem;font-weight:750}.storage-metric-accent{border-color:var(--green)}@supports (color:color-mix(in lab, red, red)){.storage-metric-accent{border-color:color-mix(in srgb, var(--green) 28%, var(--line))}}.storage-metric-accent{background:var(--green-soft)}.storage-metric-accent strong,.storage-metric-accent small{color:var(--green-dark)}.storage-usage-chart{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface-raised);padding:18px}.storage-usage-chart-heading{justify-content:space-between;align-items:baseline;gap:18px;margin-bottom:11px;font-size:.78rem;font-weight:750;display:flex}.storage-usage-chart-heading strong{color:var(--green-dark);font-size:.9rem}.storage-usage-track{background:var(--canvas-deep);border-radius:999px;height:14px;overflow:hidden;box-shadow:inset 0 1px 2px #1f27241a}.storage-usage-fill{border-radius:inherit;background:linear-gradient(90deg, var(--green), var(--accent));height:100%;transition:width .42s;display:block}.storage-estimate-note{border-radius:var(--radius-sm);background:var(--canvas);color:var(--ink-soft);align-items:flex-start;gap:10px;padding:13px 15px;display:flex}.storage-estimate-note svg{color:var(--green);flex:none;margin-top:2px}.storage-estimate-note p{margin:0;font-size:.74rem;line-height:1.7}.reset-learning-warning{border:1px solid var(--danger);gap:4px;display:grid}@supports (color:color-mix(in lab, red, red)){.reset-learning-warning{border:1px solid color-mix(in srgb, var(--danger) 24%, transparent)}}.reset-learning-warning{border-radius:var(--radius-sm);background:var(--danger-soft);color:var(--danger);padding:15px 17px;font-size:.82rem}.reset-learning-warning strong{font-size:.9rem}.field{flex-direction:column;gap:7px;display:flex}.field-label{font-size:.8rem;font-weight:800}.field-hint,.field-error{font-size:.72rem}.field-hint{color:var(--ink-soft)}.field-error{color:var(--danger);font-weight:700}.text-input,.text-area,.select-input{border:1px solid var(--line-strong);background:var(--surface-raised);border-radius:11px;width:100%;padding:11px 13px;transition:border .16s,box-shadow .16s}.text-area{resize:vertical;min-height:110px;line-height:1.65}.text-input:focus,.text-area:focus,.select-input:focus{border-color:var(--green);outline:none;box-shadow:0 0 0 3px #1f76691c}.settings-form{gap:24px;display:grid}.study-mode-options{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.study-mode-option{cursor:pointer;border:1px solid var(--line-strong);background:var(--canvas);min-height:108px;color:var(--ink);text-align:left;border-radius:15px;align-content:center;gap:7px;padding:16px;transition:border-color .16s,background .16s,box-shadow .16s;display:grid}.study-mode-option span{color:var(--ink-soft);font-size:.72rem;line-height:1.55}.study-mode-option.is-active{border-color:var(--green);background:var(--green-soft);box-shadow:0 0 0 3px #1f76691a}.fixed-settings{border:1px solid var(--line);background:var(--canvas);border-radius:13px;flex-wrap:wrap;gap:8px;padding:13px;display:flex}.fixed-settings span{background:var(--surface-raised);color:var(--ink-soft);border-radius:999px;padding:6px 10px;font-size:.68rem;font-weight:750}.form-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.segmented-control{border:1px solid var(--line-strong);background:var(--canvas);border-radius:12px;grid-template-columns:1fr 1fr;padding:4px;display:grid;overflow:hidden}.segmented-control button{cursor:pointer;min-height:40px;color:var(--ink-soft);background:0 0;border-radius:9px;font-size:.82rem;font-weight:800}.segmented-control button.is-active{background:var(--surface-raised);box-shadow:var(--shadow-sm);color:var(--ink)}.quick-speed-setting{border:1px solid var(--line);background:var(--canvas);border-radius:13px;gap:10px;padding:15px;display:grid}.quick-speed-control{color:var(--ink-soft);grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:12px;font-size:.76rem;font-weight:750;display:grid}.quick-speed-slider{cursor:pointer;width:100%;accent-color:var(--green)}.quick-speed-slider:focus-visible{outline-offset:3px;outline:3px solid #1f766933}.quick-speed-value{color:var(--ink);text-align:center;font-size:.8rem;font-weight:800}.toggle-group{border:1px solid var(--line);border-radius:13px;display:grid;overflow:hidden}.toggle-row{cursor:pointer;border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:20px;min-height:68px;padding:12px 15px;display:flex;position:relative}.toggle-row:last-child{border-bottom:0}.toggle-row strong,.toggle-row small{display:block}.toggle-row strong{font-size:.82rem}.toggle-row small{color:var(--ink-soft);font-size:.69rem}.toggle-row input{opacity:0;width:1px;height:1px;position:absolute}.toggle-visual{background:var(--line-strong);color:#0000;border-radius:999px;flex:none;place-items:center start;width:42px;height:24px;padding:3px;transition:background .16s;display:grid}.toggle-visual:before{content:"";background:#fff;border-radius:50%;width:18px;height:18px;transition:transform .16s}.toggle-row input:checked+.toggle-visual{background:var(--green)}.toggle-row input:checked+.toggle-visual:before{transform:translate(18px)}.page-intro{margin-bottom:33px}.page-intro h1{margin:7px 0 9px;font-size:clamp(2.3rem,6vw,4.25rem)}.page-intro p{color:var(--ink-soft);margin:0}.page-intro-row{margin-bottom:32px}.page-intro-row>div{min-width:0}.release-page-intro{padding-bottom:8px}.current-version{border:1px solid var(--line);background:var(--surface);width:fit-content;box-shadow:var(--shadow-sm);border-radius:999px;align-items:baseline;gap:12px;margin-top:24px;padding:8px 15px;display:flex}.current-version span{color:var(--ink-soft);font-size:.72rem;font-weight:700}.current-version strong{color:var(--green-dark);font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:1rem}.release-history{gap:20px;display:grid}.release-history-heading{align-items:center;gap:9px;display:flex}.release-history-heading svg{color:var(--green)}.release-history-heading h2{margin:0;font-size:1rem}.release-list{margin:0;padding:0;list-style:none;display:grid}.release-item{padding:0 0 24px 32px;position:relative}.release-item:before{background:var(--line-strong);content:"";width:1px;position:absolute;top:8px;bottom:-8px;left:7px}.release-item:after{border:3px solid var(--canvas);background:var(--green);width:11px;height:11px;box-shadow:0 0 0 1px var(--green);content:"";border-radius:50%;position:absolute;top:7px;left:2px}.release-item:last-child{padding-bottom:0}.release-item:last-child:before{display:none}.release-item article{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);box-shadow:var(--shadow-sm);padding:20px 22px}.release-meta{align-items:center;gap:9px;display:flex}.release-meta h3{margin:0;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:1.05rem}.latest-release-badge{background:var(--green-soft);color:var(--green-dark);border-radius:999px;padding:3px 8px;font-size:.64rem;font-weight:800}.release-item time{color:var(--ink-soft);align-items:center;gap:6px;margin-top:5px;font-size:.73rem;display:flex}.release-item ul{gap:7px;margin:15px 0 0;padding-left:1.25rem;display:grid}.release-item li li{padding-left:2px}.release-item li li::marker{color:var(--accent)}.panel{border:1px solid var(--line);border-radius:var(--radius-md);background:var(--surface);box-shadow:var(--shadow-sm);padding:28px}.upload-panel{gap:23px;display:grid}.import-mode-options{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.import-mode-option{cursor:pointer;border:1px solid var(--line-strong);background:var(--canvas);min-height:66px;color:var(--ink-soft);text-align:center;border-radius:14px;place-items:center;padding:11px 12px;font-size:.86rem;font-weight:800;line-height:1.45;transition:border-color .16s,background .16s,color .16s;display:grid}.import-mode-option:hover:not(:disabled){border-color:var(--green)}.import-mode-option.is-active{border-color:var(--green);background:var(--green-soft);color:var(--green-dark);box-shadow:inset 0 0 0 1px var(--green)}.import-mode-option:disabled{cursor:not-allowed;opacity:.45}.drop-zone{border:1.5px dashed var(--line-strong);background:repeating-linear-gradient(-45deg, transparent, transparent 12px, #17201f03 12px, #17201f03 24px), var(--canvas);text-align:center;border-radius:18px;flex-direction:column;justify-content:center;align-items:center;min-height:290px;padding:35px;transition:border-color .16s,background .16s;display:flex;position:relative}.drop-zone.is-dragging{border-color:var(--green);background:var(--green-soft)}.drop-zone>input{opacity:0;width:1px;height:1px;position:absolute}.drop-zone strong{margin-top:13px}.drop-zone span{color:var(--ink-soft);margin:2px 0 15px;font-size:.8rem}.drop-zone small{color:var(--ink-soft);margin-top:14px;font-size:.68rem}.drop-icon{background:var(--green-soft);border-radius:18px;place-items:center;width:58px;height:58px;display:grid;color:var(--green)!important}.format-note{background:var(--gold-soft);color:#6f531d;border-radius:12px;align-items:flex-start;gap:12px;padding:13px 15px;display:flex}.format-note svg{flex:none;margin-top:3px}.format-note p{margin:0;font-size:.76rem}.panel-actions{justify-content:flex-end}.result-panel{margin-top:24px}.result-heading{align-items:flex-start}.result-badge{background:var(--green-soft);color:var(--green-dark);border-radius:999px;align-items:center;gap:6px;padding:7px 11px;font-size:.72rem;font-weight:800;display:inline-flex}.result-badge.has-errors{background:var(--gold-soft);color:#765317}.result-stats{grid-template-columns:1fr 1fr;gap:12px;margin:25px 0;display:grid}.result-stats span{background:var(--canvas);color:var(--ink-soft);border-radius:13px;padding:16px;font-size:.73rem}.result-stats b{color:var(--ink);font-family:Georgia,serif;font-size:2.1rem;font-weight:500;line-height:1.1;display:block}.preview-list h3{margin:0 0 10px;font-size:.85rem}.preview-question{border-top:1px solid var(--line);grid-template-columns:65px minmax(0,1fr);gap:15px;padding:13px 0;display:grid}.preview-question>span{color:var(--ink-soft);font-size:.7rem}.preview-question>div{min-width:0}.preview-question p,.preview-question small{text-overflow:ellipsis;white-space:nowrap;margin:0;display:block;overflow:hidden}.preview-question p{font-size:.85rem;font-weight:700}.preview-question small{color:var(--ink-soft)}.preview-question .preview-explanation{margin-top:4px;font-size:.68rem}.error-details{background:var(--gold-soft);border:1px solid #e5c689;border-radius:12px;margin:20px 0;padding:12px 15px;font-size:.78rem}.error-details summary{cursor:pointer;font-weight:800}.error-details ul{max-height:230px;overflow-y:auto}.settings-panel{gap:22px;display:grid}.settings-form-compact{padding-top:4px}.question-heading{align-items:center}.question-heading-actions{align-items:center;gap:10px;display:flex}.search-box{border:1px solid var(--line);background:var(--surface);max-width:470px;min-height:45px;color:var(--ink-soft);border-radius:999px;align-items:center;gap:10px;margin-bottom:16px;padding:0 15px;display:flex}.search-box:focus-within{border-color:var(--green);box-shadow:0 0 0 3px #1f76691a}.search-box input{background:0 0;border:0;outline:none;width:100%;font-size:.82rem}.question-progress-legend{border:1px solid 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