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input:focus{border-color:var(--accent);box-shadow:none}.spelling-submit-hidden{position:absolute;width:1px;height:1px;padding:0;opacity:0;pointer-events:none}.spelling-definition{display:grid;justify-items:center;gap:18px;color:var(--ink-soft);text-align:center}.spelling-definition p{margin:0;font-size:22px;line-height:1.7}.spelling-sound{min-height:44px;padding:0 10px;border:0;background:transparent;color:var(--muted);display:inline-flex;align-items:center;justify-content:center;gap:7px}.spelling-error-review{margin-top:12px;display:grid;gap:12px}.spelling-error-summary{border:1px solid rgba(214,69,69,.16);border-radius:var(--radius-md);padding:12px;color:var(--ink);background:#ffffffad;display:grid;gap:5px}.spelling-error-summary span{width:fit-content;border-radius:999px;padding:4px 8px;color:var(--danger-ink);background:var(--danger-soft);font-size:12px;font-weight:900;line-height:1}.spelling-error-summary 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0;display:grid;gap:8px}.spelling-wrong-item:first-of-type{border-top:0}.spelling-wrong-item>div{display:flex;justify-content:space-between;align-items:center;gap:12px}.spelling-wrong-item strong{color:var(--ink);font-size:18px}.spelling-wrong-item em{color:var(--danger-ink);background:var(--danger-soft);border-radius:999px;padding:4px 8px;font-size:12px;font-style:normal;font-weight:800;white-space:nowrap}.spelling-wrong-item span{color:var(--ink-soft);line-height:1.45}.unit-overview-panel{margin-top:6px}.unit-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.unit-strip-card{border:1px solid var(--line);border-radius:var(--radius-md);padding:18px 20px;text-decoration:none;color:var(--ink);background:var(--surface-muted);display:grid;gap:8px}.unit-strip-card strong{font-size:16px;letter-spacing:-.01em}.unit-strip-card span{color:var(--muted);font-size:13px}.units-page{max-width:1280px}.daily-directive{border:1px solid rgba(228,233,238,.95);border-radius:var(--radius-lg);padding:14px 18px;margin-bottom:14px;background:linear-gradient(120deg,#3b82f614,#3b82f605 55%),var(--surface);box-shadow:var(--shadow-sm);display:flex;flex-wrap:wrap;align-items:center;gap:12px 24px}.daily-directive.is-backlog{background:linear-gradient(120deg,#d977061f,#d9770608 55%),var(--surface);border-color:#d9770659}.daily-directive.is-celebrate{background:linear-gradient(120deg,#14845f1a,#14845f05 55%),var(--surface);border-color:#14845f4d}.daily-directive-main{flex:1 1 320px;min-width:0;display:flex;flex-direction:column;gap:4px}.daily-directive-main h2{margin:0;font-size:20px;color:var(--ink)}.daily-directive-main p{margin:0;color:var(--muted);font-size:13px}.daily-directive-side{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.daily-directive-meta{display:flex;flex-direction:column;gap:4px;color:var(--muted);font-size:12px;font-weight:600}.daily-directive-meta span{display:inline-flex;align-items:center;gap:5px}.daily-directive-actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center;justify-content:flex-end}.review-only-chip{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(217,119,6,.35);border-radius:var(--radius-pill);background:#d977061a;color:#92400e;font-size:12px;font-weight:700;padding:6px 12px}.review-only-chip button{border:none;background:none;padding:0;color:var(--accent-ink);font:inherit;font-weight:700;cursor:pointer;text-decoration:underline;text-underline-offset:2px}.vocab-goal-panel{border:1px solid rgba(228,233,238,.95);border-radius:var(--radius-lg);padding:12px 18px;margin-bottom:18px;background:var(--surface);box-shadow:var(--shadow-sm);display:flex;flex-wrap:wrap;align-items:center;gap:14px 24px}.vocab-goal-main{flex:1 1 300px;min-width:0;display:flex;align-items:center;gap:14px}.vocab-goal-main>div:first-child{min-width:0}.vocab-goal-main h2{margin:0;font-size:19px}.vocab-goal-main 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textarea::placeholder{color:var(--muted);opacity:1}.chapter-count{margin:0;min-height:18px;color:var(--muted);font-size:12px;font-weight:700;text-align:right}.chapter-count.over-limit{color:var(--danger-ink)}.custom-chapter-add{border-style:dashed;color:var(--muted);display:grid;place-items:center;align-content:center;gap:10px;font-weight:800}.custom-chapter-add:hover{color:var(--accent-ink);border-color:#bcd7f5;background:var(--accent-soft)}.custom-book-footer{display:flex;justify-content:flex-end;gap:16px;padding-top:6px}.custom-book-footer .primary-button,.custom-book-footer .secondary-button{min-width:88px;font-size:17px}.wb-layer{position:fixed;top:0;right:0;bottom:0;left:0;z-index:90;display:grid;place-items:center;padding:28px;background:#1f2b3a57;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}.wb-modal{position:relative;display:grid;grid-template-rows:auto auto minmax(0,1fr) auto;width:min(1360px,calc(100vw - 56px));height:min(860px,calc(100vh - 56px));height:min(860px,calc(100dvh - 56px));padding:18px 24px 16px;border:1px solid rgba(228,233,238,.95);border-radius:24px;background:var(--surface-strong);box-shadow:0 28px 80px #1f2b3a33;overflow:hidden}.wb-header{display:grid;grid-template-columns:42px minmax(0,1fr) 36px;align-items:center;gap:12px;min-height:58px;padding-right:2px}.wb-header-icon{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;color:var(--accent-strong);background:var(--accent-soft)}.wb-header-copy h1{margin:0;color:var(--ink);font-size:20px;line-height:1.2;letter-spacing:-.02em}.wb-header-copy p{margin:4px 0 0;color:var(--muted);font-size:11.5px}.wb-close{width:36px;height:36px;border:1px solid var(--line);border-radius:11px;display:grid;place-items:center;color:var(--ink-soft);background:#fff}.wb-close:hover{color:var(--accent-ink);border-color:#bcd7f5;background:var(--accent-soft)}.wb-notice{position:fixed;top:18px;left:50%;z-index:8;max-width:min(620px,calc(100% - 48px));min-height:34px;padding:6px 8px 6px 11px;display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:10px;color:var(--ink-soft);background:#fffffffa;box-shadow:0 10px 26px #1f2b3a24;font-size:11.5px;font-weight:700;transform:translate(-50%);animation:content-rise .18s ease both}.wb-notice.is-success{color:#196a45;border-color:#c4e8d4;background:#f1fbf5}.wb-notice.is-error{color:var(--danger-ink);border-color:#f3d0cc;background:#fff6f5}.wb-notice.is-warn{color:var(--amber-ink);border-color:#f0dfb0;background:#fffaeb}.wb-notice>span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.wb-notice-action{flex:none;border:0;padding:2px 6px;color:var(--accent-ink);background:transparent;font-size:11px;font-weight:900;text-decoration:underline;text-underline-offset:3px}.wb-notice-close{flex:none;width:22px;height:22px;border:0;border-radius:6px;display:grid;place-items:center;color:var(--muted);background:transparent}.wb-notice-close:hover{background:#1f2b3a0f}.wb-params{display:grid;grid-template-columns:minmax(260px,380px) auto minmax(220px,1fr) auto;align-items:center;gap:18px;min-height:58px;padding:9px 13px;border:1px solid var(--line);border-radius:14px;background:var(--surface-muted)}.wb-group-field,.wb-limit-field{display:grid;align-items:center;gap:10px;color:var(--ink-soft);font-size:11px;font-weight:800}.wb-group-field{grid-template-columns:auto minmax(0,1fr)}.wb-limit-field{grid-template-columns:auto auto}.wb-group-field input{width:100%;height:34px;min-width:0;padding:0 11px;border:1px solid var(--line-strong);border-radius:8px;color:var(--ink);background:#fff;font-size:12.5px;font-weight:700;outline:none}.wb-group-field input:focus{border-color:#9cc4f8;box-shadow:0 0 0 3px #3b82f61f}.wb-limit-options{display:inline-flex;gap:1px;padding:2px;border:1px solid var(--line);border-radius:9px;background:#fff}.wb-limit-options button{min-width:32px;height:26px;border:0;border-radius:6px;color:var(--muted);background:transparent;font-size:10px;font-weight:800}.wb-limit-options button:hover{color:var(--ink);background:var(--surface-muted)}.wb-limit-options button.is-on{color:var(--accent-ink);background:var(--accent-soft);box-shadow:inset 0 0 0 1px #3b82f61f}.wb-param-hint{min-width:0;display:flex;align-items:center;gap:6px;color:var(--muted);font-size:10px;line-height:1.45}.wb-param-hint svg{flex:none;color:var(--muted-2)}.wb-param-counts{display:flex;align-items:center;gap:5px;color:var(--muted);font-size:10px;font-weight:800;white-space:nowrap}.wb-param-counts span{padding:4px 8px;border:1px solid var(--line);border-radius:999px;background:#fff}.wb-body{min-height:0;display:grid;grid-template-columns:236px minmax(0,1fr);gap:16px;padding-top:13px}.wb-rail{min-height:0;display:flex;flex-direction:column;gap:10px;padding-right:14px;border-right:1px solid var(--line-2)}.wb-rail-head{display:flex;align-items:center;justify-content:space-between;color:var(--ink-soft);font-size:11px;font-weight:900}.wb-rail-head em{color:var(--muted);font-size:9.5px;font-style:normal;font-weight:700}.wb-cover-list{min-height:0;display:flex;flex-direction:column;gap:6px;overflow-y:auto;padding:1px 2px 1px 1px}.wb-cover{flex:none;display:grid;grid-template-columns:54px minmax(0,1fr);align-items:center;gap:10px;padding:6px;border:1px solid transparent;border-radius:12px;text-align:left;background:transparent;transition:border-color .14s ease,background .14s ease,box-shadow .14s ease}.wb-cover:hover{background:var(--surface-muted)}.wb-cover.is-active{border-color:#bcd7f5;background:#f6faff;box-shadow:0 3px 10px #3b82f614}.wb-cover-art{width:54px;height:68px;border-radius:8px}.wb-cover-copy{min-width:0;display:grid;gap:4px}.wb-cover-copy>strong{overflow:hidden;color:var(--ink);font-size:11.5px;font-weight:800;text-overflow:ellipsis;white-space:nowrap}.wb-cover-copy>em{color:var(--muted);font-size:9px;font-style:normal;font-weight:700}.wb-cover-progress{height:3px;border-radius:999px;background:var(--line-2);overflow:hidden}.wb-cover-progress i{display:block;height:100%;border-radius:inherit;background:var(--accent);transition:width .18s ease}.wb-cover-progress i.is-full{background:var(--amber)}.wb-add-book{flex:none;min-height:34px;display:flex;align-items:center;justify-content:center;gap:6px;border:1px dashed var(--line-strong);border-radius:10px;color:var(--muted);background:transparent;font-size:10px;font-weight:800}.wb-add-book:hover{color:var(--accent-ink);border-color:#bcd7f5;background:var(--accent-soft)}.wb-rail-note{margin:0;display:flex;align-items:flex-start;gap:6px;color:var(--muted-2);font-size:9px;line-height:1.5}.wb-rail-note svg{flex:none;margin-top:1px}.wb-summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;padding:9px 10px;border:1px solid var(--line);border-radius:12px;background:var(--surface-muted)}.wb-summary div{display:grid;gap:1px}.wb-summary b{color:var(--ink);font-size:15px;line-height:1.1}.wb-summary span{color:var(--muted);font-size:8.5px;font-weight:700}.wb-main{min-width:0;min-height:0;display:flex;flex-direction:column}.wb-toolbar{flex:none;display:flex;align-items:center;gap:6px;min-height:34px}.wb-quickadd{flex:1;min-width:0;height:32px;display:flex;align-items:center;gap:6px;padding:0 4px 0 9px;border:1px solid var(--line-strong);border-radius:8px;background:#fff;color:var(--accent);transition:border-color .14s ease,box-shadow .14s ease,background .14s ease}.wb-quickadd:focus-within{border-color:#9cc4f8;box-shadow:0 0 0 3px #3b82f61a}.wb-quickadd.is-invalid{border-color:#e3a39a;box-shadow:0 0 0 3px #b4453a17}.wb-toolbar.is-full .wb-quickadd{color:var(--amber-ink);background:#fbfcfe}.wb-quickadd>svg{width:12px;height:12px;flex:none}.wb-quickadd input{flex:1;min-width:0;height:100%;min-height:0;padding:0;border:0;border-radius:0;outline:none;color:var(--ink);background:transparent;box-shadow:none;font-size:11px}.wb-quickadd input:focus,.wb-quickadd input:focus-visible{border:0;outline:none;box-shadow:none}.wb-quickadd input::placeholder{color:var(--muted-2)}.wb-toolbar.is-full .wb-quickadd input::placeholder{color:var(--amber-ink)}.wb-quickadd-btn{flex:none;height:24px;padding:0 9px;border:0;border-radius:6px;color:var(--accent-ink);background:var(--accent-soft);font-size:9px;font-weight:900}.wb-quickadd-btn:hover:not(:disabled){background:#d9ebff}.wb-quickadd-btn:disabled{opacity:.5}.wb-sort,.wb-batch-btn{flex:none;height:30px;display:inline-flex;align-items:center;gap:5px;padding:0 9px;border:1px solid var(--line);border-radius:8px;color:var(--ink-soft);background:#fff;font-size:9.5px;font-weight:800;white-space:nowrap}.wb-sort:hover,.wb-batch-btn:hover{border-color:#bcd7f5;color:var(--accent-ink)}.wb-batch-btn{color:#fff;border-color:transparent;background:var(--accent-cta);box-shadow:0 2px 0 var(--accent-cta-strong)}.wb-batch-btn:hover{color:#fff;background:var(--accent-cta-strong)}.wb-filters{flex:none;display:inline-flex;align-items:center;gap:1px;padding:2px;border:1px solid var(--line);border-radius:8px;background:var(--surface-muted)}.wb-filters button{height:24px;padding:0 7px;border:0;border-radius:6px;color:var(--muted);background:transparent;font-size:9px;font-weight:800;white-space:nowrap}.wb-filters button:hover{color:var(--ink)}.wb-filters button.is-on{color:var(--accent-ink);background:#fff;box-shadow:0 1px 3px #1f2b3a14}.wb-filters em{margin-left:2px;color:inherit;font-style:normal;opacity:.7}.wb-toolbar.is-empty-book .wb-sort,.wb-toolbar.is-empty-book .wb-filters{display:none}.wb-empty{flex:1;min-height:0;margin-top:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:28px;border:1px dashed var(--line-strong);border-radius:14px;text-align:center;background:#fdfefe}.wb-empty-icon{width:52px;height:52px;display:grid;place-items:center;border-radius:14px;color:var(--accent-strong);background:var(--accent-soft)}.wb-empty h3{margin:2px 0 0;color:var(--ink);font-size:15px}.wb-empty p{max-width:380px;margin:0;color:var(--muted);font-size:10.5px;line-height:1.65}.wb-empty 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var(--line-2);font-size:11px}.wb-row:last-child{border-bottom:0}.wb-row:hover{background:#fbfdff}.wb-row.is-editing{background:#f7fbff}.wb-cell-index{color:var(--muted-2);font-size:9px;font-weight:700}.wb-cell-word{min-width:0;overflow:hidden;color:var(--ink);font-size:12px;font-weight:800;text-overflow:ellipsis;white-space:nowrap}.wb-cell-meaning{min-width:0;overflow:hidden;color:var(--ink-soft);font-size:10.5px;text-overflow:ellipsis;white-space:nowrap}.wb-cell-meaning.is-pending{color:var(--amber-ink)}.wb-status{display:inline-flex;align-items:center;min-height:20px;padding:0 7px;border-radius:6px;color:var(--accent-ink);background:var(--accent-soft);font-size:8.5px;font-weight:900;white-space:nowrap}.wb-status.is-editing{color:var(--amber-ink);background:var(--amber-soft)}.wb-row-actions{display:flex;justify-content:flex-end;gap:2px}.wb-row-actions 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0;color:var(--muted);font-size:10.5px}.wb-batch-header>button{flex:none;width:30px;height:30px;border:1px solid var(--line);border-radius:8px;display:grid;place-items:center;color:var(--ink-soft);background:#fff}.wb-batch-name{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:10px;color:var(--ink-soft);font-size:10.5px;font-weight:800}.wb-batch-name input{width:100%;height:32px;min-width:0;padding:0 10px;border:1px solid var(--line-strong);border-radius:7px;color:var(--ink);background:#fff;font-size:11px;font-weight:700;outline:none}.wb-batch-name input:focus{border-color:#9cc4f8;box-shadow:0 0 0 3px #3b82f61a}.wb-batch-error{margin:-5px 0 0 54px;color:var(--danger-ink);font-size:9.5px;font-weight:700}.wb-batch textarea{width:100%;min-height:220px;flex:1;padding:11px 12px;border:1px solid var(--line-strong);border-radius:9px;color:var(--ink);background:#fbfdff;font-size:13px;line-height:1.6;resize:none;outline:none}.wb-batch 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var(--accent);outline-offset:-3px}.lesson-path-card-wrap{position:relative;display:flex;flex-direction:column;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--surface);transition:border-color .15s ease,transform .15s ease}.lesson-path-card-wrap:hover{border-color:var(--line-strong);transform:translateY(-2px)}.lesson-path-card-wrap.next{border-color:var(--accent)}.lesson-path-card-wrap.done{opacity:.82}.lesson-path-master{position:absolute;top:10px;right:10px;z-index:2;padding:5px 11px;border:1px solid rgba(255,255,255,.72);border-radius:999px;background:#1f2b3a9e;color:#fff;font-size:11.5px;font-weight:600;font-family:inherit;cursor:pointer;opacity:0;pointer-events:none;transition:opacity .15s ease,background .15s ease,border-color .15s ease}.lesson-path-card-wrap:hover .lesson-path-master,.lesson-path-card-wrap:focus-within 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var(--line);background:transparent;color:var(--text-dim);font:inherit;font-size:11.5px;cursor:pointer}.lesson-foot-toggle:hover{background:#eff7ff;color:var(--accent-ink)}.lesson-foot-toggle:focus-visible,.lesson-foot-action:focus-visible,.lesson-foot-deepen:focus-visible,.lesson-foot-secondary:focus-visible,.lesson-foot-stage:focus-visible,.lesson-foot-tier:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.lesson-foot-chevron{transition:transform .18s ease}.lesson-foot-toggle[aria-expanded=true] .lesson-foot-chevron,.lesson-foot-deepen[aria-expanded=true] .lesson-foot-chevron{transform:rotate(180deg)}.lesson-foot-panel{max-height:0;overflow:hidden;border-top:0;transition:max-height .22s cubic-bezier(.2,.8,.2,1)}.lesson-foot-panel[data-level="1"]{max-height:240px;border-top:1px solid var(--line)}.lesson-foot-panel[data-level="2"]{max-height:620px;border-top:1px solid var(--line)}.lesson-foot-panel-inner{padding:10px 12px 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32px;color:var(--text-dim);font-size:11.5px;text-decoration:none}.lesson-foot-secondary.is-link{color:var(--accent-ink);font-weight:600}.lesson-foot-secondary.is-link:hover{text-decoration:underline}.lesson-foot-deepen{display:flex;align-items:center;justify-content:flex-end;gap:3px;width:100%;min-height:44px;padding:0 12px;border:0;background:transparent;color:var(--accent-ink);font:inherit;font-size:11.5px;font-weight:600;cursor:pointer}.lesson-foot-deepen:hover{color:var(--accent)}.lesson-foot-full{display:none}.lesson-foot-full.is-open{display:grid;gap:10px;margin-top:7px;padding-top:9px;border-top:1px solid var(--line);animation:lesson-foot-fade .18s ease-out 60ms both}@keyframes lesson-foot-fade{0%{opacity:0;transform:translateY(-2px)}to{opacity:1;transform:none}}.lesson-foot-section{display:grid;gap:3px}.lesson-foot-label{display:flex;align-items:center;gap:4px;color:var(--text-dim);font-size:11.5px;font-weight:700;letter-spacing:.01em}.lesson-foot-label em{color:var(--text-dim);font-style:normal;font-weight:500}.lesson-foot-stages,.lesson-foot-tiers{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:4px;margin-top:2px}.lesson-foot-stage{display:grid;gap:1px;min-width:0;min-height:44px;padding:5px 7px;border:1px solid transparent;border-radius:8px;color:var(--text-dim);text-decoration:none}.lesson-foot-stage b{color:inherit;font-size:11.5px;font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.lesson-foot-stage span{color:inherit;font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.lesson-foot-stage.done{background:var(--green-soft, #e8f8f0);color:var(--green-ink)}.lesson-foot-stage.done span{color:var(--green-ink);opacity:.82}.lesson-foot-stage.now{background:var(--surface);color:var(--accent-ink);box-shadow:inset 0 0 0 1px var(--accent-soft, #bcd9f6)}.lesson-foot-stage.lock{background:var(--surface-subtle, 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