[hidden]{display:none!important}.library-header{max-width:none;min-height:91px;padding:20px max(28px,calc((100vw - 1320px)/2));display:flex;align-items:center;gap:35px;border-bottom:1px solid var(--line);background:#fff}.library-header .brand{margin:0 24px 0 0;font-size:29px}.library-header .brand-small{font-size:10px}.header-link{border:0;background:none;font-weight:800;font-size:15px;color:var(--ink);padding:15px 0}.header-age{font-size:14px;margin-left:auto;color:var(--muted)}.library-main{max-width:1376px;padding:38px 28px;margin:auto}.library-title{display:flex;justify-content:space-between;align-items:center;gap:30px;margin-bottom:30px}.library-title h1{font-size:39px;letter-spacing:-1.2px;margin:11px 0}.library-title p{color:var(--muted);margin:0;font-size:16px}.type-stat{display:flex;align-items:center;gap:14px;flex-shrink:0;background:#fff;border:1px solid var(--line);padding:18px 22px;border-radius:16px}.type-stat strong{font-size:38px;line-height:1;color:var(--orange);letter-spacing:-1px}.type-stat span{max-width:80px;font-size:14px;line-height:1.4;font-weight:700}.source-tabs{display:flex;gap:8px;border-bottom:1px solid var(--line);margin-bottom:25px}.source-tab{background:none;border:0;border-bottom:3px solid transparent;padding:14px 19px;color:var(--muted);font-size:15px;font-weight:800;display:flex;align-items:center;gap:12px}.source-tab span{padding:3px 8px;border-radius:12px;background:#e9edf5;font-size:12px;font-weight:500;white-space:nowrap}.source-tab.active{color:var(--blue);border-bottom-color:var(--blue)}.source-tab.active span{background:#e4ebff;color:var(--blue)}.library-layout{display:grid;grid-template-columns:190px minmax(0,1fr);gap:30px;align-items:start}.library-filters{padding-top:4px}.library-filters>label{display:block;font-size:14px;font-weight:800;margin:0 0 10px}.library-filters>select{width:100%;background:white;font-weight:600;min-height:45px}.filter-caption{font-size:12px;letter-spacing:1px;color:#7b8395;font-weight:700;margin:28px 0 13px}.category-buttons{display:grid;gap:6px}.category-button{display:flex;justify-content:space-between;gap:10px;align-items:center;background:transparent;border:0;border-radius:9px;padding:11px 12px;text-align:left;font-size:15px;color:#687087}.category-button>span:last-child{font-size:12px;color:#8b92a4}.category-button.active{background:#e9eeff;color:var(--blue);font-weight:800}.category-button.active>span:last-child{color:var(--blue)}.filter-note{border-top:1px solid var(--line);margin-top:29px;padding-top:22px;font-size:13px;color:var(--muted)}.filter-note strong{color:#4a536a}.filter-note p{line-height:1.6;margin-top:8px;font-size:13px}.library-filters>.text-button{font-size:13px}.search-row{display:flex;align-items:center;gap:12px}.search-box{display:flex;align-items:center;gap:10px;background:white;border:1px solid #dfe4ee;border-radius:11px;padding:0 15px;min-height:49px;flex:1;min-width:0}.search-box>span{font-family:Arial,sans-serif;font-size:29px;color:#868ea1;line-height:1}.search-box input{border:0;outline:0;background:transparent;width:100%;min-width:0;padding:12px 0;font-size:15px;color:var(--ink)}.search-box:focus-within{outline:3px solid #afc0ff;outline-offset:2px}.search-box input:focus-visible{outline:0}.search-box input::placeholder{color:#8a92a3}.results-heading{display:flex;justify-content:space-between;align-items:center;gap:14px;font-size:13px;color:var(--muted);margin:22px 0 16px}.results-heading 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.tile-visual{background:#f2ecff;border-color:#e9e0fa}.thinking-tile .tile-symbol{color:#ad92d8}.thinking-tile .tile-sample{color:#7955ac}.art-tile .tile-visual{background:#e9f7f0;border-color:#d7eee2}.art-tile .tile-symbol{color:#7fba9d}.art-tile .tile-sample{color:#377d5b}.tile-content{padding:17px 18px 18px;display:flex;flex-direction:column;flex:1}.tile-meta{display:flex;gap:8px;justify-content:space-between;font-size:11px;font-weight:700;color:#828a9b;margin-bottom:11px}.tile-meta>span:first-child{color:#4b66b4}.worksheet-tile h2{font-size:19px;line-height:1.3;letter-spacing:-.4px}.worksheet-tile p{font-size:14px;line-height:1.55;color:var(--muted);margin:9px 0 19px}.tile-bottom{margin-top:auto;display:flex;flex-wrap:wrap;align-items:center;gap:10px;justify-content:space-between}.tile-bottom>span{font-size:12px;color:#8b91a0}.tile-bottom .button{font-size:12px;padding:8px 10px;min-height:37px;background:#fbfcff}.empty-results{text-align:center;background:white;border:1px dashed #dce2ee;border-radius:17px;padding:50px 24px}.empty-results>span{font-size:43px;color:#b7c3de}.empty-results h2{font-size:22px;margin:8px 0}.empty-results p{font-size:15px;color:var(--muted);max-width:410px;margin:10px auto}.collection-info{background:#edf3ff;border:1px solid #dce7fc;border-radius:12px;padding:18px 20px;display:flex;align-items:center;gap:20px;margin-top:17px}.collection-info strong{font-size:16px}.collection-info p{font-size:14px;line-height:1.6;color:#61738f;margin:5px 0 0}.collection-info>.button{white-space:nowrap}.collection-status{font-size:13px;color:var(--muted);margin:18px 0 0;min-height:20px}.file-tile{padding:20px}.file-tile-top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:17px}.file-symbol{font-size:14px;font-weight:900;display:grid;place-content:center;color:#d65c3e;background:#fff1ea;width:47px;height:55px;border:1px solid #ffd9c8;border-radius:8px}.tile-grade{font-size:12px;color:var(--muted)}.file-tile h2{overflow-wrap:anywhere;font-size:17px}.file-tile .file-tile-path{font-size:12px;color:#9096a3;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin:8px 0 14px}.tile-tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:18px}.tile-tags span{font-size:11px;padding:3px 7px;background:#f2f5fa;border-radius:5px;color:#78859a}.file-tile .button{width:100%;margin-top:auto}.pagination{display:flex;align-items:center;justify-content:center;gap:22px;margin-top:24px;font-size:14px;color:var(--muted)}.library-footer{max-width:1320px;padding:26px 0;border-top:1px solid var(--line);margin:10px auto 0;display:flex;justify-content:space-between;gap:20px;font-size:12px;color:#8a92a3}.practice-main{max-width:1200px;padding:26px 28px 32px}.practice-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:13px 0 25px}.practice-heading h1{margin:10px 0;font-size:37px}.practice-heading p{color:var(--muted);font-size:15px;margin:0}.practice-settings{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;display:flex;gap:13px;align-items:flex-end;flex-wrap:wrap}.practice-settings label{display:grid;gap:7px;font-size:12px;font-weight:800;color:#697287;flex:1;min-width:100px}.practice-settings select,.practice-settings input{font-size:14px;min-height:43px;padding:10px;border:1px solid #dce1ec;border-radius:9px;width:100%;max-width:100%;background:white;color:var(--ink)}.practice-settings input{min-width:82px}.practice-settings .button{font-size:13px;white-space:nowrap}.settings-error{font-size:14px;color:#ae5428;margin:12px 0;min-height:20px}.practice-paper{background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px;box-shadow:0 5px 25px #22375704}.paper-heading{display:flex;justify-content:space-between;gap:18px;align-items:center;border-bottom:2px solid var(--ink);padding-bottom:19px}.paper-brand{font-size:12px;font-weight:900;letter-spacing:1.7px;color:var(--orange)}.paper-heading h2{font-size:26px;margin:7px 0;letter-spacing:-.6px}.paper-heading p{margin:0;font-size:14px;color:var(--muted)}.set-badge{font-size:12px;font-weight:800;letter-spacing:.7px;padding:9px 12px;border-radius:8px;background:#f1f4fa;color:#70809a;white-space:nowrap}.paper-student{font-size:14px;color:#838a97;margin:21px 0}.paper-instruction{font-size:14px;color:#65728a;background:#f8faff;padding:12px 14px;border-left:3px solid #aac0fb;border-radius:3px;margin:0 0 23px}.practice-questions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.practice-question{border:1px solid #e3e8f3;border-radius:12px;padding:17px 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.incorrect{background:#fff9ef;border-color:#dfb27f}.question-feedback{font-size:12px;line-height:1.5;color:#a16a39;margin:11px 0 0 28px}.question-feedback.success{color:#33865a}.practice-check-row{display:flex;align-items:center;gap:20px;border-top:1px solid var(--line);padding-top:22px;margin-top:25px}.practice-check-row p{font-size:14px;color:var(--muted);margin:0}.practice-check-row p.success{color:#268053}.practice-check-row .button{min-width:155px}.key-controls{display:flex;justify-content:space-between;align-items:center;gap:15px;font-size:13px;color:var(--muted);margin-top:21px;padding-top:13px;border-top:1px dashed var(--line)}.key-controls label{display:flex;gap:9px;align-items:center}.key-controls input{width:17px;height:17px;accent-color:var(--blue)}.practice-key{margin-top:20px;padding:22px;border:1px dashed #ccd6e9;border-radius:11px;background:#f9fbff}.practice-key h2{font-size:20px}.practice-key p{font-size:13px;color:var(--muted)}.practice-key ol{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px 30px;padding-left:23px;font-size:15px}.practice-session-note{font-size:13px;color:var(--muted);text-align:center;margin-top:22px}.practice-unit{font-size:18px;font-weight:700}.count-dots{display:flex;flex-wrap:wrap;gap:9px;margin:16px 0 0 28px;max-width:135px}.count-dots i{width:17px;height:17px;border-radius:50%;background:#5b79d4;display:block;flex-shrink:0}.print-choices,.print-answer-line{display:none}.file-preview{max-width:1080px;width:calc(100% - 36px);max-height:94vh;padding:23px;overflow-y:auto}.file-preview>header{display:flex;justify-content:space-between;gap:20px;align-items:flex-start}.file-preview h2{font-size:22px;margin:9px 0 4px;overflow-wrap:anywhere}.file-preview header p{font-size:12px;color:var(--muted);margin:0;overflow-wrap:anywhere}.file-preview .button{white-space:nowrap}.file-actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:20px}.file-preview-note{font-size:14px;line-height:1.55;color:var(--muted);margin:16px 0}.file-preview iframe{width:100%;height:62vh;border:1px solid var(--line);border-radius:8px;background:#f6f7fa}.file-preview-body{min-height:0}#picture-library{margin-bottom:25px}#picture-library-mobile{display:none}
@media(min-width:1400px){.practice-questions{gap:18px}.practice-question{padding:20px}.tile-meta{font-size:12px}}@media(max-width:1180px){.worksheet-cards{grid-template-columns:repeat(2,minmax(0,1fr))}.library-layout{grid-template-columns:170px minmax(0,1fr);gap:24px}.library-footer{margin-left:28px;margin-right:28px}.library-header{gap:20px}.tile-meta{font-size:12px}.practice-questions{grid-template-columns:repeat(3,minmax(0,1fr))}.practice-settings .button{flex:1}.type-stat{padding:16px}.library-title h1{font-size:34px}}@media(max-width:960px){#picture-library{display:none}#picture-library-mobile{display:inline-flex}.practice-questions{grid-template-columns:repeat(2,minmax(0,1fr))}.library-header .brand{margin-right:0}.header-age{font-size:12px}.library-main{padding-top:28px}.library-title .eyebrow{font-size:10px}.source-tab{padding:13px 12px;font-size:14px}.library-title h1{font-size:31px}.library-title p{font-size:15px}.type-stat{display:none}}
@media(max-width:720px){.library-header{padding:17px 19px;min-height:77px;gap:10px;flex-wrap:wrap}.library-header .brand{font-size:25px}.header-link{margin-left:auto;font-size:13px;padding:8px 0}.header-age{display:none}.library-main{padding:29px 18px 22px}.library-title{margin-bottom:20px}.library-title h1{font-size:31px;line-height:1.15;margin:11px 0}.library-title p{font-size:15px;line-height:1.6}.source-tabs{gap:0;margin-bottom:21px}.source-tab{font-size:13px;gap:7px;flex:1;justify-content:flex-start;padding:12px 4px;flex-wrap:wrap;align-content:start}.source-tab span{font-size:11px}.library-layout{display:flex;flex-direction:column;gap:18px}.library-filters{width:100%;display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:0}.library-filters>label{margin:0;font-size:13px}.library-filters>select{width:160px;min-height:43px;font-size:14px;margin-right:auto}.library-filters>.text-button{font-size:12px;order:2}.filter-note,.filter-caption{display:none}#category-filters{width:100%;order:3;overflow-x:auto}.category-buttons{display:flex;gap:6px;padding:3px 0;min-width:max-content}.category-button{font-size:13px;gap:9px;border:1px solid #e3e7f1;background:white;padding:8px 11px}.category-button.active{border-color:#c7d4ff}.category-button>span:last-child{font-size:11px}.library-results{width:100%;min-width:0}.search-row{flex-wrap:wrap;gap:9px}.search-box{min-width:100%;min-height:45px}.search-box input{font-size:14px}.search-row>.button{width:100%}.results-heading{margin:18px 0 13px;align-items:flex-start;gap:8px}.results-heading strong{font-size:13px;white-space:nowrap}.results-heading>span{font-size:11px;text-align:right}.worksheet-cards{gap:12px;grid-template-columns:repeat(2,minmax(0,1fr))}.tile-visual{height:85px;padding:12px;gap:9px}.tile-symbol{font-size:31px;letter-spacing:-1px}.tile-sample{font-size:13px}.tile-content{padding:13px 12px}.tile-meta{display:block;font-size:10px;margin-bottom:8px}.tile-meta span{display:block;margin:2px 0}.worksheet-tile h2{font-size:16px;line-height:1.3;letter-spacing:-.2px}.worksheet-tile p{font-size:13px;margin:7px 0 13px;line-height:1.55}.tile-bottom>span{font-size:11px}.tile-bottom .button{font-size:11px;width:100%;padding:8px 6px;min-height:37px}.file-tile{padding:14px}.file-tile h2{font-size:15px}.file-tile .button{font-size:12px;padding:8px}.file-tile-top{margin-bottom:12px;gap:6px}.file-symbol{width:36px;height:42px;font-size:12px}.tile-grade{font-size:10px}.file-tile .file-tile-path{font-size:11px}.tile-tags span{font-size:10px}.collection-info{padding:15px;gap:12px;flex-wrap:wrap}.collection-info p{font-size:13px}.collection-info strong{font-size:15px}.collection-info>.button{font-size:12px}.library-footer{margin:0 18px;padding:23px 0;flex-direction:column;gap:6px;align-items:center;text-align:center;font-size:11px}.practice-main{padding:19px 18px 24px}.practice-heading{gap:12px;align-items:flex-start;flex-wrap:wrap;margin:12px 0 19px}.practice-heading h1{font-size:31px}.practice-heading p{font-size:14px}.practice-heading .button{font-size:12px}.practice-settings{padding:14px;display:grid;grid-template-columns:1fr 1fr;gap:13px}.practice-settings label{min-width:0;font-size:12px}.practice-settings select,.practice-settings input{font-size:13px;min-width:0}.practice-settings .button{font-size:12px;padding:10px 7px}.practice-paper{padding:19px 15px;border-radius:14px}.paper-heading{gap:12px;padding-bottom:16px}.paper-brand{font-size:10px;letter-spacing:1.2px}.paper-heading h2{font-size:23px}.paper-heading p{font-size:12px}.set-badge{padding:7px 8px;font-size:10px;letter-spacing:.1px}.paper-student{font-size:11px;line-height:2;overflow-wrap:anywhere;margin:14px 0}.paper-instruction{font-size:12px;line-height:1.6;padding:10px;margin-bottom:16px}.practice-questions{gap:11px}.practice-question{padding:14px 11px}.practice-question>label{font-size:15px;gap:6px}.practice-question-number{font-size:10px;min-width:15px}.practice-answer-line{margin-left:0;margin-top:13px;gap:5px}.practice-answer-line input,.practice-answer-line select{min-height:41px;font-size:16px;padding:7px;max-width:100%}.practice-answer-line select{font-size:13px}.question-feedback{margin-left:0;font-size:11px}.practice-check-row{gap:13px;flex-wrap:wrap;margin-top:19px;padding-top:18px}.practice-check-row .button{width:100%}.practice-check-row p{font-size:13px}.key-controls{flex-direction:column;align-items:flex-start;gap:7px;font-size:12px}.key-controls .text-button{font-size:12px}.practice-key{padding:15px}.practice-key ol{grid-template-columns:1fr 1fr;font-size:13px;gap:10px 23px}.practice-session-note{font-size:12px;line-height:1.65}.count-dots{margin-left:0;gap:6px}.count-dots i{width:14px;height:14px}.file-preview{padding:17px;width:calc(100% - 22px)}.file-preview h2{font-size:18px}.file-preview .eyebrow{font-size:9px}.file-preview>header .button{font-size:12px;min-height:37px;padding:8px 12px}.file-preview-note{font-size:13px}}
@media(max-width:380px){.worksheet-cards{grid-template-columns:1fr}.tile-visual{height:85px;justify-content:space-between}.tile-meta{display:flex;justify-content:space-between;font-size:11px}.tile-bottom .button{width:auto;padding:8px 11px}.practice-questions{grid-template-columns:1fr}.source-tab{font-size:12px}.library-title h1{font-size:28px}}
@media print{body[data-view="practice"]{background:#fff}.library-header,.library-footer,.practice-main>#back-library,.practice-heading,.practice-settings,.settings-error,.practice-check-row,.key-controls,.practice-session-note{display:none!important}.practice-main{max-width:none;margin:0;padding:0}.practice-paper{border:0;box-shadow:none;padding:0;border-radius:0}.paper-heading{padding:0 0 10px}.paper-heading h2{font-size:20pt}.paper-brand{font-size:9pt}.paper-heading p{font-size:10pt}.set-badge{font-size:9pt}.paper-student{font-size:10pt;margin:15px 0}.paper-instruction{font-size:10pt;background:transparent;padding:8px 0;border:0;margin:0 0 14px}.practice-questions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.practice-question{break-inside:avoid;border:1px solid #ccc;border-radius:6px;padding:12px 9px;min-height:105px}.practice-question>label{font-size:10.5pt;gap:6px;font-weight:600}.practice-question-number{font-size:8pt;min-width:14px}.practice-answer-line{margin:16px 0 0 20px;flex-wrap:wrap}.practice-answer-line input,.practice-answer-line select,.question-feedback{display:none!important}.print-answer-line{display:inline;font-size:10pt}.print-choices{display:block;width:100%;font-size:9pt;color:#444}.practice-unit{font-size:10pt}.count-dots{gap:6px;margin-left:20px}.count-dots i{width:11px;height:11px;background:#222}.practice-key{display:none!important;border:0;border-radius:0;background:white;margin:0;padding:0;break-before:page}.print-with-key .practice-key{display:block!important}.practice-key h2{font-size:19pt}.practice-key p{font-size:11pt}.practice-key ol{font-size:11pt;gap:16px 30px}.wide-answer .practice-answer-line{margin-left:20px}body[data-view="library"] .library-filters,body[data-view="library"] .search-row,body[data-view="library"] .source-tabs,body[data-view="library"] .tile-bottom button{display:none!important}#file-preview{display:none!important}}
.pdf-loading{padding:45px 20px;text-align:center;color:var(--muted)}.pdf-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;background:#f1f4fa;padding:10px;border:1px solid var(--line);border-radius:10px 10px 0 0}.pdf-toolbar>span{font-size:13px;text-align:center}.pdf-toolbar .button{font-size:12px;padding:8px 11px;min-height:36px}.pdf-page-wrap{padding:12px;background:#e9edf4;max-height:65vh;overflow:auto;text-align:center;border:1px solid var(--line);border-top:0}.pdf-page-wrap canvas{display:block;max-width:100%;margin:auto;background:white;box-shadow:0 2px 12px #25365612}@media(max-width:520px){.pdf-toolbar .button{font-size:11px;padding:7px}.pdf-toolbar>span{font-size:12px}.pdf-page-wrap{max-height:60vh}}