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var(--border-strong);color:var(--text-muted);cursor:pointer;background:0 0;border-radius:0;align-self:flex-start;margin-bottom:4px;padding:5px 12px;font-size:11px;transition:color .15s,border-color .15s}.reading-landing-back:hover{color:var(--fg);border-color:var(--fg)}.rp-empty{text-align:center;color:var(--text-muted);letter-spacing:.4px;padding:28px 18px;font-size:12px}@media (width<=768px){.app-shell--mobile-ui .rp-page{gap:14px;padding-top:14px}.app-shell--mobile-ui .rp-zone{flex-direction:column;align-items:flex-start;gap:3px}.app-shell--mobile-ui .rp-zone__zh{font-size:23px}.app-shell--mobile-ui .rp-zone__sub{margin-left:0}.app-shell--mobile-ui .rp-filter{gap:8px;padding:12px}.app-shell--mobile-ui .rp-filter__label{display:none}.app-shell--mobile-ui .rp-search{flex:1 0 100%;min-width:0}.app-shell--mobile-ui .rp-select{flex:1;min-width:0}.app-shell--mobile-ui .rp-pill-group{flex:1 0 100%}.app-shell--mobile-ui .rp-pill{text-align:center;flex:1}.app-shell--mobile-ui .rp-ladder{background:var(--border);grid-template-columns:repeat(3,1fr);gap:1px;display:grid}.app-shell--mobile-ui .rp-ladder__cell{background:var(--bg);border-right:none}.app-shell--mobile-ui .rp-ladder__cell.is-zone{background:var(--accent-dim)}.app-shell--mobile-ui .rp-section__head{flex-wrap:wrap;gap:6px 10px;padding:14px}.app-shell--mobile-ui .rp-section__rule{display:none}.app-shell--mobile-ui .rp-section__count{margin-left:auto}.app-shell--mobile-ui .rp-row{grid-template-columns:26px minmax(0,1fr)}.app-shell--mobile-ui .rp-row__act{display:none}.app-shell--mobile-ui .rp-row__body{padding-right:14px}.app-shell--mobile-ui .rp-section.is-ext .rp-row{grid-template-columns:minmax(0,1fr)}.app-shell--mobile-ui .rp-section.is-ext .rp-row__check{display:none}.app-shell--mobile-ui .rp-section.is-ext .rp-row__body{padding-left:14px}.app-shell--mobile-ui .rp-pub-card{gap:8px;min-height:0;padding:12px}.app-shell--mobile-ui .rp-pub-mark{width:30px;height:30px;font-size:15px}.app-shell--mobile-ui .rp-pub-name{font-size:14px}}.flo-root{--flo-bg:#1f2228;--flo-bg-deep:#15171b;--flo-fg:#fff;--flo-paper:oklch(94% .025 80);--flo-ink:oklch(20% .02 80);--flo-t-sec:#ffffffa6;--flo-t-mut:#ffffff6b;--flo-t-dim:#ffffff38;--flo-t-faint:#ffffff1f;--flo-bd:#ffffff17;--flo-bd-s:#ffffff2e;--flo-surface:#ffffff0a;--flo-cinnabar:oklch(58% .18 30);--flo-jade:oklch(60% .1 165);--flo-gold:oklch(74% .12 80);--flo-gold-dim:oklch(74% .12 80/.18);--flo-azure:oklch(68% .14 232);--flo-fm:"IBM Plex Mono", ui-monospace, monospace;--flo-fz:"Noto Sans SC", "PingFang SC", sans-serif;--flo-fzs:"Noto Serif SC", "Songti SC", serif;--flo-eo:cubic-bezier(.23, 1, .32, 1);--flo-accent:var(--flo-gold);--flo-accent-dim:var(--flo-gold-dim);--flo-backdrop-blur:6px;--flo-backdrop-dim:.62;z-index:2000;color:var(--flo-fg);font-family:var(--flo-fm);-webkit-font-smoothing:antialiased;position:fixed;inset:0;overflow:hidden}.flo-root *,.flo-root :before,.flo-root :after{box-sizing:border-box}.flo-root button{font:inherit;color:inherit;cursor:pointer;background:0 0;border:none;outline:none;padding:0}.flo-root input{font:inherit;color:inherit;background:0 0;border:none;outline:none}.flo-bd{z-index:1;background:var(--flo-bg);position:absolute;inset:0;overflow:hidden}.flo-bd-inner{filter:blur(var(--flo-backdrop-blur)) saturate(.85);transform-origin:50%;position:absolute;inset:0;transform:scale(1.02)}.flo-bd-veil{z-index:2;background:radial-gradient(ellipse 90% 60% at 50% 50%, rgba(0, 0, 0, calc(var(--flo-backdrop-dim) * .5)) 0%, rgba(0, 0, 0, var(--flo-backdrop-dim)) 70%), linear-gradient(180deg, #0003 0%, #0000001a 50%, #0000004d 100%);position:absolute;inset:0}.flo-bd-nav{background:var(--flo-bg);border-bottom:1px solid var(--flo-bd);align-items:center;gap:28px;height:56px;padding:0 24px;display:flex;position:absolute;top:0;left:0;right:0}.flo-bd-brand{letter-spacing:2px;text-transform:uppercase;color:oklch(78% .14 150);background:oklch(78% .14 150/.08);border:1px solid oklch(78% .14 150/.7);padding:3px 8px;font-size:15px}.flo-bd-nav-links{gap:22px;display:flex}.flo-bd-nl{color:var(--flo-t-sec);font-size:13px;font-family:var(--flo-fz);padding:4px 0}.flo-bd-nl.is-active{color:var(--flo-fg);border-bottom:1px solid var(--flo-fg)}.flo-bd-sep{background:var(--flo-bd-s);align-self:center;width:1px;height:14px}.flo-bd-right{align-items:center;gap:10px;margin-left:auto;display:flex}.flo-bd-badge{letter-spacing:1.5px;text-transform:uppercase;color:var(--flo-t-mut);border:1px solid var(--flo-bd);padding:3px 8px;font-size:11px}.flo-bd-settings{border:1px solid var(--flo-bd-s);width:34px;height:34px;color:var(--flo-t-mut);justify-content:center;align-items:center;font-size:15px;display:flex}.flo-bd-page{max-width:1280px;margin:0 auto;padding:28px 24px;position:absolute;inset:56px 0 0}.flo-bd-head{align-items:baseline;gap:16px;margin-bottom:18px;display:flex}.flo-bd-title{font-family:var(--flo-fz);letter-spacing:1px;color:var(--flo-fg);font-size:26px;font-weight:300}.flo-bd-title-en{color:var(--flo-t-mut);font-family:var(--flo-fm);letter-spacing:2px;text-transform:uppercase;margin-left:8px;font-size:13px}.flo-bd-sub{color:var(--flo-t-mut);margin-left:auto;font-size:12px}.flo-bd-stats{background:var(--flo-bd);border:1px solid var(--flo-bd);grid-template-columns:repeat(4,1fr);gap:1px;margin-bottom:18px;display:grid}.flo-bd-stat{background:var(--flo-surface);padding:14px 18px}.flo-bd-stat-lbl{letter-spacing:1.5px;text-transform:uppercase;color:var(--flo-t-mut);font-size:10px}.flo-bd-stat-val{margin-top:4px;font-size:26px;font-weight:300;line-height:1}.flo-bd-stat-sub{color:var(--flo-t-mut);margin-top:4px;font-size:11px}.flo-bd-list{border:1px solid var(--flo-bd);background:var(--flo-surface)}.flo-bd-row{border-bottom:1px solid var(--flo-bd);grid-template-columns:40px 1fr auto;align-items:center;gap:14px;padding:13px 16px;display:grid}.flo-bd-row:last-child{border-bottom:none}.flo-bd-row-icon{color:var(--flo-t-mut);text-align:center;font-size:15px}.flo-bd-row-title{font-family:var(--flo-fz);color:var(--flo-fg);font-size:15px}.flo-bd-row-meta{color:var(--flo-t-mut);gap:8px;margin-top:5px;font-size:11px;display:flex}.flo-bd-pill{color:var(--flo-gold);letter-spacing:1px;border:1px solid oklch(72% .14 55/.6);padding:2px 7px;font-size:10px}.flo-bd-btn{letter-spacing:1px;text-transform:uppercase;border:1px solid var(--flo-bd-s);color:var(--flo-t-mut);padding:5px 10px;font-size:10px}.flo-veil{z-index:10;pointer-events:none;position:absolute;inset:0}.flo-veil:before{content:"";background:repeating-linear-gradient(0deg,#0000 0 39px,#ffffff03 39px 40px),repeating-linear-gradient(90deg,#0000 0 39px,#ffffff03 39px 40px);position:absolute;inset:0}.flo-corners{z-index:11;pointer-events:none;position:absolute;inset:14px}.flo-corner{border:1px solid var(--flo-bd-s);width:14px;height:14px;position:absolute}.flo-corner-tl{border-bottom:0;border-right:0;top:0;left:0}.flo-corner-tr{border-bottom:0;border-left:0;top:0;right:0}.flo-corner-bl{border-top:0;border-right:0;bottom:0;left:0}.flo-corner-br{border-top:0;border-left:0;bottom:0;right:0}.flo-stage{z-index:20;animation:floStageIn .6s var(--flo-eo) both;justify-content:center;align-items:center;padding:48px;display:flex;position:absolute;inset:0}@keyframes floStageIn{0%{opacity:0}to{opacity:1}}.flo-poem-rail{z-index:15;pointer-events:none;width:64px;font-family:var(--flo-fzs);writing-mode:vertical-rl;letter-spacing:14px;color:var(--flo-t-faint);justify-content:center;align-items:center;font-size:18px;font-weight:300;display:flex;position:absolute;top:0;bottom:0}.flo-poem-rail--left{left:32px}.flo-poem-rail--right{right:32px}.flo-brand-tag{z-index:21;pointer-events:auto;animation:floFadeUp .6s .2s var(--flo-eo) both;align-items:baseline;gap:10px;display:flex;position:absolute;top:24px;left:32px}.flo-brand-mark{font-family:var(--flo-fzs);color:var(--flo-paper);letter-spacing:1px;font-size:22px;font-weight:700}.flo-brand-name{letter-spacing:3px;text-transform:uppercase;color:var(--flo-t-mut);font-size:10px}.flo-brand-ver{letter-spacing:1.6px;color:var(--flo-t-dim);border:1px solid var(--flo-bd);padding:1px 5px;font-size:9px}.flo-skip-tag{z-index:21;animation:floFadeUp .6s .2s var(--flo-eo) both;align-items:center;gap:14px;display:flex;position:absolute;top:24px;right:32px}.flo-skip-kbd{letter-spacing:1.4px;color:var(--flo-t-dim);text-transform:uppercase;align-items:center;gap:6px;font-size:10px;display:flex}.flo-k{font-family:var(--flo-fm);border:1px solid var(--flo-bd-s);color:var(--flo-t-sec);text-align:center;background:#0000004d;min-width:20px;padding:2px 6px;font-size:10px}.flo-k--inline{margin:0 4px}.flo-skip-btn{letter-spacing:1.6px;text-transform:uppercase;color:var(--flo-t-mut);font-size:10px;font-family:var(--flo-fm);background:0 0;border:1px solid #0000;padding:7px 14px;transition:color .15s,border-color .15s}.flo-skip-btn:hover{color:var(--flo-paper);border-color:var(--flo-bd-s)}.flo-panel{width:100%;max-width:var(--flo-panel-w,680px);border:1px solid var(--flo-bd-s);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);max-height:calc(100vh - 160px);animation:floPanelIn .55s var(--flo-eo) both;background:#141519f0;flex-direction:column;display:flex;position:relative;box-shadow:0 30px 100px #0009,0 0 0 1px #0006}@keyframes floPanelIn{0%{opacity:0;transform:translateY(10px)scale(.98)}to{opacity:1;transform:translateY(0)scale(1)}}.flo-panel-head{border-bottom:1px solid var(--flo-bd);align-items:center;gap:18px;padding:18px 24px 16px;display:flex}.flo-panel-eyebrow{align-items:baseline;gap:10px;display:flex}.flo-panel-juan{font-family:var(--flo-fzs);color:var(--flo-accent);letter-spacing:2px;font-size:16px;font-weight:500}.flo-panel-juan-en{letter-spacing:1.8px;text-transform:uppercase;color:var(--flo-t-mut);font-size:10px;font-family:var(--flo-fm)}.flo-panel-progress{align-items:center;gap:14px;margin-left:auto;display:flex}.flo-dots{gap:5px;display:flex}.flo-dot{background:var(--flo-bd-s);width:16px;height:1px;transition:all .35s var(--flo-eo)}.flo-dot.is-done{background:var(--flo-paper)}.flo-dot.is-cur{background:var(--flo-accent);width:30px}.flo-step-n{letter-spacing:1.6px;color:var(--flo-t-mut);font-size:10px;font-family:var(--flo-fm);font-variant-numeric:tabular-nums}.flo-panel-body{scrollbar-width:thin;scrollbar-color:#ffffff1a transparent;flex:1;position:relative;overflow-y:auto}.flo-scene{min-height:360px;animation:floSceneIn .5s var(--flo-eo) both;flex-direction:column;padding:28px 36px 24px;display:flex}@keyframes floSceneIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.flo-panel-foot{border-top:1px solid var(--flo-bd);background:#0000002e;align-items:center;gap:12px;padding:16px 24px;display:flex}.flo-foot-spacer{flex:1}.flo-foot-hint{letter-spacing:1.4px;color:var(--flo-t-dim);font-size:10px;font-family:var(--flo-fm);text-transform:uppercase}.flo-btn{letter-spacing:1.6px;text-transform:uppercase;border:1px solid var(--flo-bd-s);color:var(--flo-t-sec);font-size:10px;font-family:var(--flo-fm);background:#0003;padding:9px 18px;transition:all .15s}.flo-btn:hover:not(:disabled){color:var(--flo-paper);border-color:var(--flo-paper)}.flo-btn:disabled{opacity:.3;cursor:not-allowed}.flo-btn--ghost{color:var(--flo-t-mut);background:0 0;border-color:#0000}.flo-btn--ghost:hover:not(:disabled){color:var(--flo-paper);border-color:var(--flo-bd-s)}.flo-btn--primary{border-color:var(--flo-accent);color:var(--flo-accent);background:var(--flo-accent-dim)}.flo-btn--primary:hover:not(:disabled){background:var(--flo-accent);color:var(--flo-ink)}.flo-h1{font-family:var(--flo-fzs);color:var(--flo-paper);letter-spacing:1px;font-size:34px;font-weight:500;line-height:1.2}.flo-h1-en{font-family:var(--flo-fm);letter-spacing:3px;text-transform:uppercase;color:var(--flo-accent);margin-top:6px;font-size:11px}.flo-h2{font-family:var(--flo-fzs);color:var(--flo-paper);letter-spacing:1px;font-size:22px;font-weight:500;line-height:1.3}.flo-lead{font-family:var(--flo-fz);color:var(--flo-t-sec);max-width:520px;font-size:13.5px;line-height:1.75}.flo-lead strong{color:var(--flo-paper);font-weight:500}.flo-lbl{letter-spacing:2px;text-transform:uppercase;color:var(--flo-t-mut);font-size:10px;font-family:var(--flo-fm)}@keyframes floFadeUp{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.flo-s1{flex:1;grid-template-columns:200px 1fr;align-items:center;gap:32px;display:grid}.flo-s1-glyph-wrap{justify-content:center;align-items:center;height:220px;display:flex;position:relative}.flo-s1-glyph{font-family:var(--flo-fzs);color:var(--flo-paper);text-shadow:0 0 60px var(--flo-accent-dim);font-size:180px;font-weight:900;line-height:1;animation:5s ease-in-out infinite floBreathe}.flo-s1-glyph-frame{border:1px solid var(--flo-bd-s);pointer-events:none;position:absolute;inset:0}.flo-s1-glyph-frame:before,.flo-s1-glyph-frame:after{content:"";background:var(--flo-bd);height:1px;position:absolute;left:6px;right:6px}.flo-s1-glyph-frame:before{top:6px}.flo-s1-glyph-frame:after{bottom:6px}.flo-s1-seal{background:var(--flo-cinnabar);width:42px;height:42px;color:var(--flo-paper);font-family:var(--flo-fzs);animation:floSealIn .9s .5s var(--flo-eo) both;justify-content:center;align-items:center;font-size:22px;font-weight:700;display:flex;position:absolute;top:-12px;right:-12px;box-shadow:0 0 0 1px #0000004d,0 6px 20px #0006}@keyframes floBreathe{0%,to{transform:translateY(0)scale(1)}50%{transform:translateY(-3px)scale(1.012)}}@keyframes floSealIn{0%{opacity:0;transform:rotate(-12deg)scale(.5)}to{opacity:1;transform:rotate(0)scale(1)}}.flo-s1-right{flex-direction:column;gap:18px;display:flex}.flo-s1-couplet{font-family:var(--flo-fzs);color:var(--flo-paper);letter-spacing:2px;border-left:2px solid var(--flo-accent);background:var(--flo-surface);margin-top:6px;padding:14px 18px;font-size:16px;line-height:1.9}.flo-s1-couplet-en{color:var(--flo-t-mut);font-size:11px;font-family:var(--flo-fm);letter-spacing:.5px;margin-top:6px;line-height:1.5}.flo-s2{text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:22px;display:flex}.flo-s2-q{font-family:var(--flo-fzs);color:var(--flo-paper);letter-spacing:2px;font-size:24px;line-height:1.6}.flo-s2-q-en{letter-spacing:1.8px;text-transform:uppercase;color:var(--flo-t-mut);font-size:11px;font-family:var(--flo-fm);margin-top:4px}.flo-s2-input-wrap{flex-direction:column;align-items:center;gap:10px;margin-top:10px;display:flex}.flo-s2-input{border:none;border-bottom:1px solid var(--flo-bd-s);width:380px;max-width:100%;font-family:var(--flo-fzs);color:var(--flo-paper);text-align:center;letter-spacing:2px;background:0 0;padding:12px 0 10px;font-size:32px;transition:border-color .25s}.flo-s2-input:focus{border-bottom-color:var(--flo-accent)}.flo-s2-input::placeholder{color:var(--flo-t-faint)}.flo-s2-suggest{flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;margin-top:14px;display:flex}.flo-s2-suggest-lbl{margin-right:4px}.flo-s2-chip{font-family:var(--flo-fzs);border:1px solid var(--flo-bd-s);color:var(--flo-t-sec);letter-spacing:1px;background:#0003;padding:6px 14px;font-size:14px;transition:all .15s}.flo-s2-chip:hover{border-color:var(--flo-accent);color:var(--flo-accent)}.flo-s2-honor{flex-wrap:wrap;justify-content:center;align-items:center;gap:6px;margin-top:8px;display:flex}.flo-s2-honor-lbl{letter-spacing:1.6px;color:var(--flo-t-dim);text-transform:uppercase;font-size:9px}.flo-s2-honor-btn{font-family:var(--flo-fzs);border:1px solid var(--flo-bd);color:var(--flo-t-mut);background:0 0;padding:4px 10px;font-size:13px;transition:all 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(width<=1024px){.reading-drawer__body{grid-template-columns:1fr;height:auto;max-height:320px}.reading-drawer__filters{border-right:none;border-bottom:1px solid var(--border);flex-direction:row;overflow-x:auto}.reading-drawer__filter-btn{border-bottom:2px solid #0000;border-left:none}.reading-drawer__filter-btn.is-active{border-left-color:#0000;border-bottom-color:var(--accent)}}.library-app{--accent:var(--accent-reading);--accent-dim:var(--accent-reading-dim);flex-direction:column;gap:20px;max-width:1280px;margin:0 auto;padding:32px 24px;display:flex}.library-app__alert{background:var(--surface);color:#ffb4b4f2;font-size:13px;font-family:var(--font-display);letter-spacing:.3px;border:1px solid #ff787859;padding:12px 16px}.library-app .stats-strip{background:var(--border);border:1px solid var(--border);grid-template-columns:repeat(4,1fr);gap:1px;display:grid}.library-app .stat-card{background:var(--surface);padding:16px 20px}.library-app 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.origin--onsite{border-color:var(--accent);color:var(--accent)}.library-app .origin--community{color:#60a5fa;border-color:#60a5fa99}.library-app .origin--external,.library-app .origin--offsite{border-color:var(--border-strong);color:var(--text-muted)}.library-app .meta-pill{letter-spacing:.6px;border:1px solid var(--border);color:var(--text-muted);font-size:10px;font-family:var(--font-display);padding:2px 7px}.library-app .rail{border:1px solid var(--border);background:var(--surface);flex-direction:column;display:flex}.library-app .rail__head{border-bottom:1px solid var(--border);flex-wrap:wrap;align-items:baseline;gap:12px;padding:14px 16px;display:flex}.library-app .rail__zh{font-family:var(--font-zh);color:var(--fg);font-size:15px}.library-app .rail__en{letter-spacing:1.5px;text-transform:uppercase;color:var(--text-muted);font-size:10px;font-family:var(--font-display)}.library-app .rail__count{color:var(--text-muted);font-size:11px;font-family:var(--font-display)}.library-app .rail__hint{color:var(--text-dim);margin-left:auto;font-size:11px}.library-app .reco-row{border-bottom:1px solid var(--border);grid-template-columns:40px minmax(0,1fr) auto;transition:background .15s;display:grid}.library-app .reco-row:last-child{border-bottom:none}.library-app .reco-row:hover{background:var(--surface-hover)}.library-app .reco-row__icon{color:var(--text-muted);justify-content:center;align-items:center;padding-left:16px;font-size:14px;display:flex}.library-app .reco-row__body{cursor:pointer;text-align:left;background:0 0;border:none;min-width:0;padding:12px 16px}.library-app .reco-row__title{font-family:var(--font-zh);color:var(--fg);margin-bottom:4px;font-size:14px;line-height:1.4}.library-app .reco-row__meta{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.library-app .reco-row__match{color:var(--accent);font-size:10px;font-family:var(--font-display);letter-spacing:.4px;margin-top:4px}.library-app .reco-row__match--warn{color:oklch(72% .14 55)}.library-app 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.form-field{flex-direction:column;gap:6px;display:flex}.sources-app .form-panel-body .form-field label{font-family:var(--font-display);letter-spacing:1.2px;text-transform:uppercase;color:var(--text-muted);font-size:10px}.sources-app .form-panel-body .form-field .record-meta{letter-spacing:.6px;color:var(--text-dim);text-transform:none;font-size:10px}.sources-app .form-panel-body .control,.sources-app .form-panel-body .textarea,.sources-app .form-panel-body .search-control{border:1px solid var(--border-strong);color:var(--fg);min-height:unset;background:#ffffff0a;border-radius:0;padding:9px 12px;font-size:13px;transition:border-color .15s}.sources-app .form-panel-body .textarea{min-height:90px;line-height:1.5}.sources-app .form-panel-body .control:focus,.sources-app .form-panel-body .textarea:focus,.sources-app .form-panel-body .search-control:focus{border-color:#ffffff59}.sources-app .form-panel-body .control::placeholder,.sources-app .form-panel-body 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.atlas-head__dot{background:var(--page-accent);width:6px;height:6px;box-shadow:0 0 8px var(--page-accent);border-radius:50%}.grammar-app .atlas-nav{border:1px solid var(--border);gap:0;display:flex}.grammar-app .atlas-nav button{width:32px;height:26px;color:var(--text-muted);border:none;border-right:1px solid var(--border);cursor:pointer;background:0 0;font-size:13px;transition:color .15s,background .15s}.grammar-app .atlas-nav button:last-of-type{border-right:none}.grammar-app .atlas-nav button:hover{color:var(--fg);background:var(--surface-hover)}.grammar-app .atlas-nav__pos{font-family:var(--font-display);color:var(--text-dim);letter-spacing:1px;border-right:1px solid var(--border);align-items:center;padding:0 10px;font-size:10px;display:flex}.grammar-app .atlas-hero{border-bottom:1px solid var(--border);flex-shrink:0;grid-template-columns:128px 1fr;align-items:center;gap:24px;min-height:176px;padding:24px 28px;display:grid;position:relative;overflow:hidden}.grammar-app .atlas-hero:before{content:"";background:radial-gradient(circle, var(--accent-dim) 0%, transparent 70%);pointer-events:none;width:240px;height:240px;position:absolute;top:-30px;right:-40px}.grammar-app .term-box{aspect-ratio:1;border:1px solid var(--border-strong);background:var(--grammar-bg-deep);justify-content:center;align-items:center;display:flex;position:relative}.grammar-app .term-box:before,.grammar-app .term-box:after{content:"";background:var(--border-strong);position:absolute}.grammar-app .term-box:before{opacity:.3;height:1px;top:50%;left:0;right:0}.grammar-app .term-box:after{opacity:.3;width:1px;top:0;bottom:0;left:50%}.grammar-app .term-box__glyph{font-family:var(--font-zh-serif);color:var(--fg);z-index:1;text-align:center;word-break:break-word;max-width:100%;padding:6px;font-size:76px;font-weight:500;line-height:1;position:relative}.grammar-app .term-box__glyph--long{letter-spacing:-2px;font-size:44px}.grammar-app .term-box__glyph--xlong{letter-spacing:-1px;font-size:28px;line-height:1.1}.grammar-app .term-box__glyph--xxlong{letter-spacing:-.5px;font-size:20px;line-height:1.15}.grammar-app .term-box__glyph--compound{letter-spacing:-1px;flex-direction:column;justify-content:center;align-items:center;gap:2px;font-size:32px;line-height:1;display:inline-flex}.grammar-app .term-box__glyph--compound.term-box__glyph--xlong{font-size:28px}.grammar-app .term-box__glyph--compound.term-box__glyph--xxlong{font-size:22px}.grammar-app .term-box__glyph-part{display:block}.grammar-app .term-box__glyph-sep{color:var(--text-dim);opacity:.5;margin:1px 0;font-size:.55em;line-height:.6;display:block}.grammar-app .term-meta{z-index:1;flex-direction:column;gap:8px;display:flex;position:relative}.grammar-app .term-pinyin{font-family:var(--font-display);letter-spacing:1.5px;color:var(--accent);text-transform:lowercase;font-size:13px}.grammar-app .term-eng{color:var(--fg);font-size:22px;font-weight:400;line-height:1.3}.grammar-app .term-tags{flex-wrap:wrap;gap:6px;margin-top:6px;display:flex}.grammar-app .term-tag{font-family:var(--font-display);letter-spacing:1.2px;text-transform:uppercase;color:var(--text-muted);border:1px solid var(--border);padding:3px 8px;font-size:10px}.grammar-app .term-tag--warn{color:var(--accent);border-color:var(--accent-line)}.grammar-app .atlas-tabs{border-bottom:1px solid var(--border);scrollbar-width:thin;scrollbar-color:var(--border-strong) transparent;flex-shrink:0;padding:0 22px;display:flex;overflow-x:auto}.grammar-app .atlas-tabs::-webkit-scrollbar{height:4px}.grammar-app .atlas-tabs::-webkit-scrollbar-thumb{background:var(--border-strong)}.grammar-app .atlas-tab{font-family:var(--font-display);letter-spacing:1.4px;text-transform:uppercase;color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-bottom:1px solid #0000;flex-shrink:0;align-items:center;gap:6px;margin-bottom:-1px;margin-right:22px;padding:12px 0;font-size:11px;transition:color .15s,border-color .15s;display:flex}.grammar-app .atlas-tab:hover:not(:disabled){color:var(--fg)}.grammar-app .atlas-tab.is-active{color:var(--fg);border-bottom-color:var(--accent)}.grammar-app .atlas-tab:disabled{color:var(--text-dim);cursor:not-allowed;opacity:.5}.grammar-app .atlas-tab--ref{color:var(--text-dim)}.grammar-app .atlas-tab--ref.is-active{color:var(--fg)}.grammar-app .atlas-tab__badge{font-family:var(--font-display);color:var(--text-dim);font-size:9px}.grammar-app .atlas-tab.is-active .atlas-tab__badge{color:var(--accent)}.grammar-app .atlas-body{scrollbar-width:thin;scrollbar-color:var(--border-strong) transparent;flex:1;min-height:0;padding:24px 28px 28px;overflow-y:auto}.grammar-app .atlas-body::-webkit-scrollbar{width:6px}.grammar-app .atlas-body::-webkit-scrollbar-thumb{background:var(--border-strong)}.grammar-app .atlas-empty{text-align:center;color:var(--text-dim);padding:60px 30px;font-size:12px}.grammar-app .atlas-section-label{font-family:var(--font-display);letter-spacing:1.5px;text-transform:uppercase;color:var(--text-muted);margin-bottom:12px;font-size:10px}.grammar-app .atlas-attribution{color:var(--text-dim);margin:0 0 14px;font-size:11px;line-height:1.6}.grammar-app .atlas-explanation{font-family:var(--font-display);color:var(--text-secondary);white-space:pre-wrap;margin-bottom:24px;font-size:13px;line-height:1.85}.grammar-app .atlas-explanation--zh{font-family:var(--font-zh);font-size:14px;line-height:1.9}.grammar-app .atlas-explanation strong{color:var(--fg);font-weight:500}.grammar-app .atlas-em{color:var(--text-secondary);border-bottom:1px dotted var(--border-strong);font-style:normal}.grammar-app .atlas-em--accent{color:var(--accent);border-bottom:none;font-style:normal}.grammar-app .pattern-diagram{border:1px solid var(--border);background:var(--grammar-bg-deep);flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:22px;padding:18px 16px;display:flex}.grammar-app .pattern-slot-wrap{align-items:center;gap:6px;display:flex}.grammar-app .pattern-slot{flex-direction:column;align-items:center;gap:6px;display:flex}.grammar-app .slot-token{font-family:var(--font-display);border:1px solid var(--border-strong);color:var(--text-secondary);white-space:nowrap;text-align:center;min-width:48px;padding:8px 14px;font-size:13px}.grammar-app .slot-token--fixed{border-color:var(--accent);background:var(--accent-dim);color:var(--accent);font-family:var(--font-zh-serif);padding:6px 12px;font-size:16px}.grammar-app .slot-token--optional{color:var(--text-muted);border-style:dashed}.grammar-app .slot-label{font-family:var(--font-display);letter-spacing:1px;text-transform:uppercase;color:var(--text-dim);font-size:9px}.grammar-app .slot-arrow{color:var(--text-dim);align-self:center;margin-bottom:18px;padding:0 2px;font-size:13px}.grammar-app .meta-strip{border:1px solid var(--border);grid-template-columns:repeat(3,1fr);gap:0;margin-bottom:24px;display:grid}.grammar-app .meta-cell{border-right:1px solid var(--border);padding:14px 16px}.grammar-app .meta-cell:last-child{border-right:none}.grammar-app .meta-cell__label{font-family:var(--font-display);letter-spacing:1.3px;text-transform:uppercase;color:var(--text-dim);margin-bottom:8px;font-size:9px}.grammar-app .meta-cell__value{color:var(--fg);align-items:center;gap:8px;font-size:14px;display:flex}.grammar-app .meta-cell__value--small{font-size:12px}.grammar-app .freq-bars{gap:2px;display:inline-flex}.grammar-app .freq-bar{background:var(--border-strong);width:4px;height:12px}.grammar-app .freq-bar.is-on{background:var(--accent)}.grammar-app .ex-list{flex-direction:column;gap:14px;margin-bottom:24px;display:flex}.grammar-app .ex-card{background:var(--surface);border:1px solid var(--border);border-left:2px solid var(--accent-grammar);grid-template-columns:28px 1fr;gap:14px;padding:14px 16px 16px;display:grid;position:relative}.grammar-app .ex-card__body{min-width:0}.grammar-app .ex-num{font-family:var(--font-display);color:var(--text-dim);letter-spacing:1px;padding-top:4px;font-size:11px}.grammar-app .ex-zh{font-family:var(--font-zh-serif);color:var(--fg);margin-bottom:8px;font-size:19px;line-height:1.6}.grammar-app .ex-hl{color:var(--accent);border-bottom:1px solid var(--accent-line);padding-bottom:1px}.grammar-app .ex-pinyin{font-family:var(--font-display);color:var(--text-dim);letter-spacing:.5px;margin-bottom:8px;font-size:11px}.grammar-app .ex-en{color:var(--text-secondary);font-size:13px;line-height:1.6}.grammar-app .ex-tag{font-family:var(--font-display);letter-spacing:1.2px;text-transform:uppercase;color:var(--text-dim);border:1px solid var(--border);padding:2px 6px;font-size:9px;position:absolute;top:14px;right:16px}.grammar-app .note-list{border-top:1px solid var(--border);flex-direction:column;gap:0;display:flex}.grammar-app .note-row{border-bottom:1px solid var(--border);grid-template-columns:80px 1fr;gap:16px;padding:14px 0;display:grid}.grammar-app .note-key{font-family:var(--font-display);letter-spacing:1.3px;text-transform:uppercase;color:var(--text-muted);padding-top:2px;font-size:10px}.grammar-app .note-val{color:var(--text-secondary);font-size:13px;line-height:1.7}.grammar-app .note-pop{font-family:var(--font-zh-serif);color:var(--fg);padding:0 2px}.grammar-app .related-grid{grid-template-columns:1fr 1fr;gap:8px;display:grid}.grammar-app .related-card{border:1px solid var(--border);background:var(--surface);cursor:pointer;text-align:left;font:inherit;color:inherit;align-items:center;gap:14px;padding:12px 14px;transition:border-color .15s,background .15s;display:flex}.grammar-app .related-card:hover:not(:disabled){border-color:var(--border-strong);background:var(--surface-hover)}.grammar-app .related-card:disabled{cursor:not-allowed;opacity:.6}.grammar-app .related-glyph{font-family:var(--font-zh-serif);color:var(--fg);text-align:center;width:36px;font-size:24px}.grammar-app .related-info{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.grammar-app .related-pinyin{font-family:var(--font-display);color:var(--accent);letter-spacing:1px;font-size:10px}.grammar-app .related-note{color:var(--text-muted);white-space:nowrap;text-overflow:ellipsis;font-size:11px;overflow:hidden}.grammar-app .ext-stack{flex-direction:column;gap:10px;display:flex}.grammar-app .ext-card{border:1px solid var(--border);background:var(--surface);padding:14px 16px}.grammar-app .ext-card__label{font-family:var(--font-display);letter-spacing:1.3px;text-transform:uppercase;color:var(--text-muted);margin:0 0 8px;font-size:10px}.grammar-app .ext-card__title{color:var(--fg);margin:4px 0 8px;font-size:14px;line-height:1.5}.grammar-app .ext-card__body{color:var(--text-secondary);white-space:pre-wrap;margin:0;font-size:13px;line-height:1.7}.grammar-app .ext-card__meta{font-family:var(--font-display);color:var(--text-dim);letter-spacing:.5px;margin:10px 0 0;font-size:10px}.grammar-app .ext-related{margin-top:18px}.grammar-app .ext-chips{flex-wrap:wrap;gap:6px;display:flex}.grammar-app .ext-chip{font-family:var(--font-display);letter-spacing:1px;text-transform:uppercase;color:var(--text-muted);border:1px solid var(--border);cursor:pointer;background:0 0;padding:4px 10px;font-size:10px;transition:color .15s,border-color .15s}button.grammar-app .ext-chip:hover,.grammar-app button.ext-chip:hover{color:var(--fg);border-color:var(--border-strong)}.grammar-app .ext-chip--active{color:var(--accent);border-color:var(--accent-line)}.grammar-app .ext-actions{flex-wrap:wrap;gap:8px;margin-top:14px;display:flex}.grammar-app .atlas-foot{border-top:1px solid var(--border);background:var(--grammar-bg-deep);flex-shrink:0;justify-content:space-between;align-items:center;gap:12px;padding:14px 22px;display:flex}.grammar-app .atlas-kbd-hint{font-family:var(--font-display);color:var(--text-dim);letter-spacing:.8px;align-items:center;gap:6px;font-size:10px;display:flex}.grammar-app .atlas-kbd{border:1px solid var(--border-strong);min-width:18px;height:18px;font-family:var(--font-display);color:var(--text-muted);background:var(--bg);justify-content:center;align-items:center;padding:0 4px;font-size:10px;display:inline-flex}.grammar-app .atlas-foot-btn{font-family:var(--font-display);letter-spacing:1.2px;text-transform:uppercase;border:1px solid var(--border-strong);color:var(--fg);cursor:pointer;background:0 0;padding:7px 14px;font-size:11px;text-decoration:none;transition:background .15s,border-color .15s}.grammar-app .atlas-foot-btn:hover{background:var(--surface-hover)}.grammar-app .atlas-foot-btn:disabled{opacity:.5;cursor:not-allowed}.grammar-app .ilr-filter{border-bottom:1px solid var(--border);flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:12px;padding:8px 0 12px;display:flex}.grammar-app .ilr-filter__label{font-family:var(--font-display);letter-spacing:1.2px;text-transform:uppercase;color:var(--text-dim);margin-right:4px;font-size:10px}.grammar-app .ilr-chip{font-family:var(--font-display);letter-spacing:.8px;border:1px solid var(--border);color:var(--text-muted);cursor:pointer;background:0 0;padding:4px 10px;font-size:11px;transition:border-color .15s,background .15s,color .15s}.grammar-app .ilr-chip:hover{border-color:var(--border-strong);color:var(--fg)}.grammar-app .ilr-chip.is-active{border-color:var(--accent-line);color:var(--fg);background:var(--surface)}.grammar-app .err-list{flex-direction:column;gap:12px;display:flex}.grammar-app .err-card{border:1px solid var(--border);background:var(--surface);grid-template-columns:36px 1fr;gap:12px;padding:12px 14px;display:grid}.grammar-app .err-num{font-family:var(--font-display);color:var(--text-dim);letter-spacing:1px;font-size:11px}.grammar-app .err-card__body{flex-direction:column;gap:6px;min-width:0;display:flex}.grammar-app .err-row{font-family:var(--font-zh-serif);align-items:baseline;gap:8px;font-size:15px;line-height:1.5;display:flex}.grammar-app .err-mark{font-family:var(--font-display);text-align:center;flex-shrink:0;width:14px;font-size:13px;font-weight:700}.grammar-app .err-mark--wrong{color:#c44}.grammar-app .err-mark--right{color:#4a8a52}.grammar-app .err-row--wrong .err-text{color:var(--text-muted);-webkit-text-decoration:line-through #c4444480;text-decoration:line-through #c4444480;text-decoration-thickness:1px}.grammar-app .err-row--right .err-text{color:var(--fg)}.grammar-app .err-why{border-top:1px dashed var(--border);color:var(--text-muted);margin-top:4px;padding-top:8px;font-size:13px;line-height:1.55}.grammar-app .wild-list{flex-direction:column;gap:12px;display:flex}.grammar-app .wild-card{border:1px solid var(--border);background:var(--surface);flex-direction:column;gap:4px;padding:12px 14px;display:flex}.grammar-app .wild-source{font-family:var(--font-display);letter-spacing:1.2px;text-transform:uppercase;color:var(--text-dim);flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:4px;font-size:10px;display:flex}.grammar-app .wild-badge{font-family:var(--font-display);letter-spacing:1px;border:1px solid var(--border);text-transform:uppercase;padding:2px 6px;font-size:9px}.grammar-app .wild-badge--curated{color:var(--accent-line,var(--fg));border-color:var(--accent-line,var(--border-strong))}.grammar-app .wild-badge--corpus{color:var(--text-muted);border-color:var(--border)}.grammar-app .wild-card--curated{border-left:2px solid var(--accent-line,var(--border-strong))}.grammar-app .wild-card--corpus{border-left:2px solid var(--border)}.grammar-app .wild-loading{color:var(--text-dim);border:1px dashed var(--border);padding:12px 14px;font-size:12px;font-style:italic}.grammar-app .wild-zh{font-family:var(--font-zh-serif);color:var(--fg);font-size:16px;line-height:1.55}.grammar-app .wild-pinyin{color:var(--text-dim);font-size:12px;font-style:italic}.grammar-app .wild-en{color:var(--text-muted);font-size:13px;line-height:1.5}@media (width<=1100px){.grammar-app .layout{grid-template-columns:minmax(0,1fr) minmax(440px,500px);gap:18px}.grammar-app .section-level{display:none}}@media (width<=1024px){.grammar-app .layout{grid-template-columns:1fr}.grammar-app .atlas{max-height:none;position:static}.grammar-app__head{flex-direction:column;align-items:flex-start}.grammar-app__summary{text-align:left}}.history-app{--accent:var(--accent-games);--accent-dim:var(--accent-games-dim);flex-direction:column;gap:20px;max-width:1280px;margin:0 auto;padding:32px 24px;display:flex}.tools-page{--accent:var(--accent-listening);--accent-dim:var(--accent-listening-dim);flex-direction:column;gap:20px;max-width:1280px;margin:0 auto;padding:32px 24px;display:flex}.tools-page__head,.tools-page__nudge{background:var(--surface);border:1px solid var(--border);justify-content:space-between;align-items:flex-start;gap:18px;padding:18px 20px;display:flex}.tools-page__nudge{align-items:center}.tools-page__eyebrow{font-family:var(--font-display);letter-spacing:1.5px;text-transform:uppercase;color:var(--text-muted);margin:0;font-size:10px}.tools-page__title{font-family:var(--font-display);color:var(--fg);letter-spacing:.5px;margin:6px 0 0;font-size:22px;font-weight:300}.tools-page__nudge-name{font-family:var(--font-zh);color:var(--fg);margin:6px 0 0;font-size:16px}.tools-page__copy{color:var(--text-secondary);max-width:720px;margin:8px 0 0;font-size:13px;line-height:1.6}.tools-page__actions{flex-shrink:0;gap:8px;display:flex}@media 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var(--rp-eo);background:#15171b;flex-direction:column;gap:4px;padding:12px 14px;display:flex;position:absolute;bottom:calc(100% + 8px);left:12px;right:12px}@keyframes rp-pop{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.roleplay__vocab-head{align-items:baseline;gap:10px;display:flex}.roleplay__vocab-term{font-family:var(--rp-fzs);color:var(--rp-paper);font-size:18px}.roleplay__vocab-pinyin{font-family:var(--rp-fm);color:var(--rp-t-dim);letter-spacing:.5px;font-size:11px}.roleplay__vocab-close{color:var(--rp-t-mut);cursor:pointer;background:0 0;border:0;margin-left:auto;font-size:18px;line-height:1}.roleplay__vocab-gloss{font-family:var(--rp-fz);color:var(--rp-t-sec);margin:0;font-size:12px;line-height:1.55}.roleplay__vocab-class{font-family:var(--rp-fm);letter-spacing:1px;text-transform:uppercase;color:var(--rp-t-dim);margin:0;font-size:9px}.roleplay__layer-bar{border-top:1px solid var(--rp-bd);flex-wrap:wrap;align-items:center;gap:8px;padding:12px 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var(--rp-gold);border-left-width:3px;align-items:baseline;gap:12px;margin:0 0 10px;padding:10px 14px;display:flex}.roleplay__constraint-tag{font-family:var(--font-display);letter-spacing:1px;text-transform:uppercase;color:var(--rp-gold);white-space:nowrap;font-size:10px}.roleplay__constraint-text{font-family:var(--font-zh);color:var(--rp-paper);font-size:15px;line-height:1.5}.roleplay__feedback{z-index:60;animation:roleplay-fade .2s var(--ease-out);background:#0000008c;justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.roleplay__feedback-card{background:var(--bg-deep);border:1px solid var(--rp-bd-s);width:min(460px,100%);max-height:90vh;padding:22px 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