.section-navigation>div{grid-template-columns:repeat(3,minmax(0,1fr))}.course-subnav{display:flex;gap:10px;border-bottom:1px solid #d5e1e9;padding:0 0 15px;margin:0 0 26px}.course-subnav a{padding:10px 30px;border-radius:7px;color:#38627c;text-decoration:none;font-size:18px;background:#e8f0f5}.course-subnav a[aria-current=page]{background:#315e7a;color:white}.library-controls{background:white;border:1px solid #dce8ec;padding:25px;border-radius:22px}.library-books,.library-kind,.library-stages{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:20px}.library-page button,.library-page select{font-family:inherit}.library-books button,.library-kind button{font-size:18px;border:1px solid #bbd7dc;background:#f3fafb;color:#316777;border-radius:30px;padding:12px 23px;cursor:pointer}.library-books button[aria-pressed=true]{background:#256e82;color:white;border-color:#256e82}.library-kind button{font-size:20px;min-width:116px}.library-kind button[aria-pressed=true]{background:#fff0c1;border-color:#cb9b31;color:#78571a}.library-stages{border-top:1px solid #e5edef;padding-top:19px}.library-stages button{font-size:18px;border:0;background:transparent;color:#526a7e;padding:9px 17px;border-radius:12px;cursor:pointer}.library-stages b{display:inline-grid;place-items:center;border-radius:50%;width:29px;height:29px;background:#e7eff4;margin-right:5px;font-size:16px}.library-stages button[aria-pressed=true]{background:#e6f4ee;color:#256c52}.library-stages button[aria-pressed=true] b{background:#2c8663;color:white}.library-filters{display:flex;flex-wrap:wrap;gap:16px;align-items:center}.library-filters label{font-size:15px;display:flex;gap:8px;align-items:center;max-width:100%}.library-filters label[hidden]{display:none}.library-filters select{padding:10px;border:1px solid #bed0da;background:white;border-radius:8px;font-size:15px;max-width:250px;min-width:100px}.radical-shortcuts{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px}.radical-shortcuts button{border:1px solid #c4dce4;border-radius:18px;background:#f2f8fc;font-size:16px;color:#315e75;padding:8px 15px;cursor:pointer}.radical-shortcuts button[aria-pressed=true]{background:#315e7a;color:white}.library-surface{padding-top:26px}#library-actionbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:15px;margin-bottom:23px}#library-actionbar p{font-size:15px;color:#5b7486;margin:0}.library-count{font-size:22px;color:#34556b}.library-count b{font-size:17px;font-weight:500;color:#678699;margin-left:8px}.bubble-actions{display:flex;gap:10px;flex-wrap:wrap}.bubble-actions button,.bubble-detail-actions button,.reveal-bubble,#library-more{font-size:17px;padding:12px 20px;border-radius:25px;background:#256e82;border:1px solid #256e82;color:white;cursor:pointer}.bubble-actions button:nth-child(2){background:#fff0c1;color:#775313;border-color:#d9ba68}.bubble-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(125px,1fr));gap:18px}.bubble{--bubble:#e6f5fb;--edge:#a7d4e4;aspect-ratio:1;display:flex;flex-direction:column;align-items:center;justify-content:center;border:2px solid var(--edge);border-radius:42%;background:var(--bubble);box-shadow:0 5px 0 color-mix(in srgb,var(--edge),transparent 50%);color:#284b60;cursor:pointer;transition:transform .15s,box-shadow .15s;padding:12px 8px;min-width:0}.bubble.color-1{--bubble:#eaf5e6;--edge:#b8d8a8}.bubble.color-2{--bubble:#fff4ce;--edge:#e9d18c}.bubble.color-3{--bubble:#f1eaf9;--edge:#d0b9e6}.bubble:hover{transform:translateY(-4px);box-shadow:0 8px 0 color-mix(in srgb,var(--edge),transparent 55%)}.bubble span{font-size:44px;line-height:1.5;font-weight:500}.bubble small{font-size:18px;line-height:1.8;min-height:1.8em}.word-bubble{border-radius:32px;aspect-ratio:1.5;grid-column:span 2;padding:18px 10px}.word-bubble span{font-size:30px}.word-bubble small{font-size:17px}.concealed{visibility:hidden}#library-more{display:block;margin:28px auto;background:white;color:#32667c}#library-more[hidden]{display:none}.library-sources{margin-top:36px;font-size:14px;color:#617987}.library-sources p{font-size:14px;line-height:1.8}.library-sources a{color:inherit}.bubble-dialog{position:fixed;width:min(780px,calc(100% - 28px));max-height:90dvh;overflow:auto;box-sizing:border-box;border:2px solid #c0dce4;border-radius:24px;background:#fcfeff;padding:28px;color:#2f5267}.bubble-dialog::backdrop{background:#16374866}.bubble-close{position:sticky;float:right;top:0;border:0;border-radius:50%;width:42px;height:42px;background:#e6f0f4;font-size:30px;color:#315e7a;cursor:pointer;z-index:2}.bubble-focus{text-align:center;margin:18px 0 25px}.focus-pinyin{font-size:29px;line-height:1.6}.bubble-focus h2{font-size:83px;font-weight:500;line-height:1.45;margin:0}.radical-badge{display:inline-block;background:#e8f5eb;border-radius:25px;padding:9px 22px;font-size:21px;color:#326b4d;margin:10px 0}.bubble-detail-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}.bubble-detail-actions button{font-size:16px}.bubble-detail-actions button:nth-child(2){background:#e9f5ec;color:#356d4d;border-color:#c4dfcb}.bubble-detail-actions button:nth-child(3){background:#fff2cf;color:#785b19;border-color:#e7d292}.reveal-bubble{display:block;margin:0 auto 22px}.textbook-context{margin-top:28px;border-top:1px solid #dde9ee;padding-top:22px}.textbook-context label{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:16px}.textbook-context select{font:inherit;max-width:100%;padding:8px;border:1px solid #c8dbe5;border-radius:7px;background:white}.textbook-context blockquote{background:#f1f7fb;border:0;border-radius:13px;padding:18px 21px;font-size:21px;line-height:1.95;margin:18px 0}.textbook-context mark{background:#ffe8a2;color:inherit;padding:0 2px}.textbook-context cite{display:block;font-size:14px;font-style:normal;color:#6a8292;margin-top:10px}.context-words{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}.context-words button{border:1px solid #b9d7df;background:#ecf7fa;border-radius:17px;padding:11px 20px;font-size:23px;color:#315e7a;cursor:pointer}.context-words small{display:block;font-size:16px}.context-note{font-size:15px;color:#6a8292}.word-part{font:inherit;background:transparent;border:0;border-bottom:2px dotted #adc9d8;color:inherit;cursor:pointer;padding:0 4px}#inline-strokes{margin-top:24px;padding-top:20px;border-top:1px solid #e2ebf0}.library-page .practice-dialog{border-radius:23px}.library-page .practice-dialog .table-choice,.library-page .practice-dialog .practice-scope,.library-page .practice-dialog .practice-filters,.library-page .practice-dialog .practice-reference,.library-page .practice-dialog .practice-credit,.library-page .practice-dialog .practice-head .eyebrow,.library-page .practice-dialog .card-context,.library-page .practice-dialog .pair-card small{display:none}.library-page .pair-card{border-radius:30px;background:#edf7fb;min-height:90px;font-size:25px}.library-page .pair-card[data-side=sound]{background:#fff5d9}.library-page .flash-card{border-radius:40px;background:#edf7fb}.library-page .character-wall button{border-radius:30px;background:#e9f5ed}.library-page button:focus-visible,.library-page a:focus-visible{outline:3px solid #c4861c;outline-offset:4px}@media(max-width:650px){.library-controls{padding:18px 14px;border-radius:18px}.library-books{gap:8px}.library-books button{padding:11px 17px;font-size:17px}.library-stages{gap:2px;justify-content:space-between}.library-stages button{padding:8px;font-size:17px}.library-filters{gap:13px}.library-filters label{flex-wrap:wrap}.library-filters select{max-width:240px}.radical-shortcuts{gap:8px}.radical-shortcuts button{font-size:15px;padding:8px 11px}.bubble-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.bubble{padding:10px 4px}.bubble span{font-size:36px}.bubble small{font-size:16px}.word-bubble{grid-column:span 1;aspect-ratio:auto;min-height:110px;border-radius:25px}.word-bubble span{font-size:22px}.word-bubble small{font-size:14px;overflow-wrap:anywhere}.library-page:has(.word-bubble) .bubble-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.bubble-dialog{padding:20px 16px}.bubble-focus h2{font-size:64px}.textbook-context blockquote{font-size:19px;padding:16px}.bubble-actions button{font-size:16px;padding:10px 15px}.bubble-detail-actions{gap:8px}.course-subnav a{padding:10px 25px}}

.library-filter-details>summary{font-size:16px;color:#476f85;cursor:pointer;padding:5px 0}.library-filter-details[open] .library-filters{margin-top:15px}@media(max-width:650px){.radical-shortcuts{flex-wrap:nowrap;overflow-x:auto;padding-bottom:6px}.radical-shortcuts button{flex-shrink:0}.library-books,.library-kind{margin-bottom:15px}.library-stages{margin-bottom:12px}.library-controls{padding-top:16px}}
/* Equal course and practice entries; centered study surface. */
.course-subnav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;padding:0;border:0;margin:0 auto 28px;width:100%}.course-subnav a{text-align:center;display:grid;place-items:center;min-height:70px;box-sizing:border-box;border-radius:18px;font-size:23px;padding:17px 20px;background:#edf5f9;border:2px solid #b9d2e1}.course-subnav a[aria-current=page]{background:#315e7a;border-color:#315e7a}.course-subnav a:last-child{background:#ecf7ee;border-color:#bad7c5;color:#34734f}.course-subnav a:last-child[aria-current=page]{background:#367b58;color:#fff;border-color:#367b58}.library-page .class-main{max-width:1100px;margin-left:auto;margin-right:auto}.library-goal{margin:22px 0 0;padding:20px 24px;border:1px solid #e6d69f;border-radius:20px;background:#fff9e7}.goal-heading{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;margin-bottom:16px}.goal-heading h2{font-size:21px;color:#735921;margin:0}.goal-heading span{font-size:14px;color:#786b48}.goal-controls{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:18px}.goal-presets{display:flex;gap:8px}.goal-presets button{font:inherit;font-size:17px;background:#fffdf5;color:#79591b;border:1px solid #d7bf77;border-radius:22px;padding:10px 18px;cursor:pointer}.goal-presets button[aria-pressed=true]{background:#9d7428;color:white;border-color:#9d7428}.goal-controls label{display:flex;align-items:center;gap:8px;font-size:15px;color:#715f36}.goal-controls input,.goal-controls select{font:inherit;font-size:16px;border:1px solid #d6c697;border-radius:9px;background:white;padding:9px;box-sizing:border-box}.goal-controls input{width:85px}.goal-controls select{max-width:150px}.goal-controls>button{font:inherit;font-size:16px;background:white;border:1px solid #c5b37a;border-radius:22px;padding:10px 20px;color:#786028;cursor:pointer}.goal-controls button:hover{filter:brightness(.96)}@media(max-width:650px){.course-subnav{gap:11px;margin-bottom:20px}.course-subnav a{font-size:21px;min-height:64px;border-radius:15px}.library-goal{padding:17px 15px}.goal-controls{gap:13px;justify-content:flex-start}.goal-heading{margin-bottom:13px;gap:7px}.goal-heading h2{font-size:20px}.goal-presets button{padding:9px 16px}.goal-controls label{font-size:14px}.goal-controls input{width:78px}.goal-controls select{max-width:135px}}
.review-library .library-books{display:none}.review-start{display:grid;grid-template-columns:1fr 2fr;gap:22px;margin:24px 0 32px}.review-start>button{background:#fff1c8;border:2px solid #dfc477;border-radius:30px;padding:23px;color:#735a20;font-family:inherit;cursor:pointer}.review-start b{display:block;font-size:25px}.review-start>button span{display:block;margin-top:12px;font-size:15px}.review-table-entry{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.review-table-entry a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-decoration:none;color:#315f79;border:2px solid #b9d8e5;border-radius:35%;padding:28px 10px;background:#e7f5fb;font-size:23px}.review-table-entry a:nth-child(2){background:#eff7e8;border-color:#c6dab5;color:#4b6f35}.review-table-entry a:nth-child(3){background:#f4ecfa;border-color:#d8c5e7;color:#70578a}.review-table-entry small{font-size:15px}.paragraph-draw-status{font-size:15px;color:#347256}.round-celebration{position:fixed;z-index:10000;top:35%;left:50%;transform:translateX(-50%);pointer-events:none;display:grid;place-items:center;min-width:200px}.round-celebration strong{background:#fff3ba;color:#705217;border:2px solid #dbc16e;border-radius:25px;padding:19px 27px;font:600 23px/1.5 system-ui;box-shadow:0 7px 25px #35546b30;white-space:nowrap}.round-celebration i{position:absolute;width:10px;height:14px;border-radius:3px;animation:round-burst 1.5s ease-out both}@keyframes round-burst{0%{transform:translate(0,0) rotate(0);opacity:1}100%{transform:translate(var(--x),var(--y)) rotate(220deg);opacity:0}}@media(prefers-reduced-motion:reduce){.round-celebration i{display:none}}@media(max-width:650px){.review-start{grid-template-columns:1fr;gap:14px}.review-start>button{padding:20px}.review-table-entry{gap:10px}.review-table-entry a{font-size:20px;padding:26px 8px}.round-celebration strong{font-size:19px}}

.bubble-grid:has(.word-bubble){grid-template-columns:repeat(4,minmax(0,1fr))}.bubble-grid .word-bubble{grid-column:span 1;aspect-ratio:auto;min-height:130px;padding:14px 8px;border-radius:26px}.bubble-grid .word-bubble span{font-size:26px}.bubble-grid .word-bubble small{font-size:16px;overflow-wrap:anywhere}@media(max-width:650px){.bubble-grid:has(.word-bubble){grid-template-columns:repeat(2,minmax(0,1fr))}.bubble-grid .word-bubble{min-height:110px}.bubble-grid .word-bubble span{font-size:23px}}

#library-actionbar .bubble-actions{display:flex;flex-wrap:nowrap;justify-content:center;gap:8px;overflow-x:auto}#library-actionbar .bubble-actions button{white-space:nowrap;padding:12px 16px;min-width:0}#library-actionbar .library-count{font-size:18px}#library-actionbar .library-count b{display:none}