:root{color-scheme:light;--ink:#142842;--muted:#53647a;--blue:#174eab;--line:#dce3ed;--paper:#fff;--accent:#ffba45}*{box-sizing:border-box}body{margin:0;background:#f3f6fb;color:var(--ink);font:16px/1.5 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,input,select{font:inherit}button,a,select,input{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}a{color:var(--blue)}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #cc7200;outline-offset:3px}.preview{background:#172e4d;color:#fff;text-align:center;padding:9px 20px;font-size:13px}header{background:white;border-bottom:1px solid var(--line);padding:22px max(5vw,20px);display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:12px;font-size:19px;font-weight:750;color:var(--ink);text-decoration:none}.mark{background:var(--blue);color:white;display:grid;place-items:center;width:45px;height:45px;border-radius:12px;font-size:32px;font-weight:800;line-height:1}.brand small{display:block;font-size:10px;letter-spacing:1.4px;color:var(--muted);margin-top:2px}.back{font-size:14px;text-decoration:none;font-weight:600}main{max-width:1380px;margin:auto;padding:36px max(4vw,20px) 20px}.intro{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:36px}.eyebrow{font-size:12px;font-weight:750;letter-spacing:1.6px;color:var(--blue);margin:0 0 12px}h1{font-size:clamp(30px,4vw,49px);letter-spacing:-1.8px;line-height:1.15;margin:0 0 13px}h1 span{color:#bf6700}.intro p:last-child{color:var(--muted);margin:0}.numbers{border-left:3px solid var(--accent);padding:0 0 0 20px;white-space:nowrap}.numbers strong{display:block;font-size:36px;letter-spacing:-1px;line-height:1.15}.numbers span{font-size:14px;color:var(--muted)}.workspace{display:grid;grid-template-columns:245px minmax(0,1fr);gap:30px}aside{padding-top:12px}nav{display:flex;flex-direction:column;gap:5px}.category{border:0;background:transparent;border-radius:9px;display:flex;align-items:center;gap:12px;color:var(--muted);text-align:left;padding:13px 12px;width:100%;font-size:14px;font-weight:600}.category:hover{background:#e6edf8}.category[aria-pressed=true]{background:var(--blue);color:white}.category .symbol{font:20px Georgia,serif;width:25px;flex-shrink:0;text-align:center}.category .n{margin-left:auto;font-size:12px;opacity:.9}.aside-note{border-top:1px solid var(--line);margin-top:26px;padding:22px 12px;color:var(--muted);font-size:13px;line-height:1.8}.content{min-width:0}.searchbox{border:1px solid var(--line);background:var(--paper);border-radius:14px;padding:22px 25px;box-shadow:0 5px 18px #14284205}.searchbox>label{font-weight:700;display:block;margin-bottom:12px}.searchline{display:flex;align-items:center;gap:12px;border:1px solid #abbdd5;border-radius:8px;padding:0 13px;background:#fff}.searchline:focus-within{border-color:var(--blue);box-shadow:0 0 0 3px #174eab16}.searchline span{font-size:26px;color:var(--blue)}input{border:0;min-width:0;width:100%;padding:13px 0;background:transparent;color:var(--ink)}input:focus-visible{outline:none}#clear{border:0;background:transparent;font-size:25px;color:var(--muted)}.searchbox small{display:block;font-size:12px;margin-top:8px;color:var(--muted)}.filters{display:flex;align-items:end;gap:14px;margin:22px 0 30px}.filters>div:first-child{flex:1;min-width:0}.filters label{display:block;font-size:13px;color:var(--muted);margin-bottom:7px}select{background:white;border:1px solid #c4cedd;border-radius:7px;color:var(--ink);padding:10px 30px 10px 12px;max-width:100%;width:100%;font-size:14px}.reset{border:0;background:transparent;color:var(--blue);padding:12px 0;font-size:13px}.result-head{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:14px}.result-head h2{font-size:20px;margin:0}.result-head>span{font-size:13px;color:var(--muted);white-space:nowrap}#results{border-top:1px solid var(--line)}.file{background:white;display:flex;align-items:center;gap:17px;padding:20px;border-bottom:1px solid var(--line)}.file:first-child{border-radius:10px 10px 0 0}.file:last-child{border-radius:0 0 10px 10px}.file:hover{background:#fbfdff}.file-icon{border:1px solid #cbd9ed;background:#eef4fc;border-radius:6px;width:43px;height:53px;flex-shrink:0;display:grid;place-items:center;color:var(--blue);font-size:11px;font-weight:750}.file-info{flex:1;min-width:0}.file h3{font-size:16px;line-height:1.4;margin:0 0 6px;font-weight:650;overflow-wrap:anywhere}.file-meta{font-size:12px;color:var(--muted);display:flex;flex-wrap:wrap;gap:5px 12px}.file-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}.view{background:#eef4fc;border:1px solid #d2dff2;border-radius:6px;padding:8px 11px;color:var(--blue);font-size:13px;font-weight:650}.download{font-size:13px;text-decoration:none;padding:8px 3px}.empty{padding:40px 20px;text-align:center;background:white}.empty h3{margin-top:0}.empty p{color:var(--muted)}.pagination{display:flex;justify-content:space-between;align-items:center;padding:23px 0;gap:12px;font-size:13px}.pagination button{border:1px solid #c4cedd;background:white;border-radius:6px;padding:9px 14px;color:var(--ink)}.pagination button:disabled{opacity:.4;cursor:default}footer{border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;padding-top:22px;margin-top:30px;font-size:12px;color:var(--muted)}dialog{border:0;border-radius:14px;padding:20px;width:min(1050px,95vw);max-height:94vh;box-shadow:0 20px 100px #0005;color:var(--ink)}dialog::backdrop{background:#102138b8}.dialog-head{display:flex;align-items:center;gap:20px;justify-content:space-between}.dialog-head h2{font-size:18px;margin:0;overflow-wrap:anywhere}.dialog-head button{border:0;background:#eef2f8;font-size:28px;border-radius:6px;padding:0 12px}.dialog-help{font-size:13px;color:var(--muted)}iframe{border:1px solid var(--line);width:100%;height:70vh;background:#f0f2f5}.skip{position:absolute;top:-100px}.skip:focus{top:0;background:white;padding:12px;z-index:20}@media(max-width:1000px){.workspace{grid-template-columns:205px minmax(0,1fr);gap:20px}.file{flex-wrap:wrap}.file-actions{margin-left:60px}.numbers{display:none}}@media(max-width:700px){main{padding:26px 16px}.preview{font-size:12px}header{padding:16px}.brand{font-size:16px}.back{font-size:12px}.intro{margin-bottom:22px}h1{letter-spacing:-1px}.workspace{display:block}aside{padding:0 0 20px}nav{display:grid;grid-template-columns:1fr 1fr;gap:5px}.category{font-size:13px;padding:10px 8px}.category .symbol{width:18px}.aside-note{display:none}.searchbox{padding:18px}.filters{flex-wrap:wrap;margin-bottom:22px}.filters>div:first-child{flex-basis:100%}.filters>div:nth-child(2){flex:1}.file{padding:16px;gap:12px}.file-actions{margin-left:55px}.file h3{font-size:15px}.result-head h2{font-size:18px}footer{flex-direction:column}.dialog-help{font-size:12px}}
.learning-bar{display:flex;justify-content:space-between;align-items:center;gap:24px;background:#eaf1fc;border:1px solid #d5e2f5;border-radius:14px;padding:24px;margin-bottom:20px}.learning-bar h2{font-size:23px;letter-spacing:-.5px;margin:0 0 6px}.learning-bar p:last-child{margin:0;color:var(--muted);font-size:14px}.learning-bar .eyebrow{margin-bottom:8px}.learning-buttons,.dialog-actions{display:flex;flex-wrap:wrap;gap:10px}.primary-button,.soft-button,.learning-tabs button{border:1px solid #c7d5e9;border-radius:7px;padding:10px 14px;background:white;color:var(--blue);font-weight:600;font-size:14px}.primary-button{background:var(--blue);color:white;border-color:var(--blue)}.primary-button:disabled{opacity:.5;cursor:default}.learning-tabs{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 12px}.learning-tabs button[aria-pressed=true]{background:var(--ink);color:white;border-color:var(--ink)}.learning-status{font-size:14px;color:#244c36;min-height:0}.learning-status:empty{display:none}.extra-filters{border:1px solid var(--line);border-radius:8px;padding:12px 16px;background:#fff;margin-bottom:12px}.extra-filters summary{cursor:pointer;font-size:14px;font-weight:600}.extra-filters p{font-size:12px;color:var(--muted)}.filter-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:14px}.filter-grid label{font-size:13px}.filter-grid select{margin-top:7px}.text-button{background:none;border:0;padding:7px 0;font-size:12px;color:var(--blue);text-align:left}.result-head{margin-top:16px}.personal-actions{display:flex;flex-wrap:wrap;gap:6px;margin-top:13px}.personal-actions .soft-button{font-size:12px;padding:5px 8px;background:#fff}.personal-actions [aria-pressed=true]{background:#e6f3eb;color:#205c3b;border-color:#a9cdb8}.personal-actions .text-button{padding:5px 8px}.file{align-items:flex-start}.file-icon{margin-top:3px}.file-actions{flex-direction:column;align-items:stretch}.completed{border-left:3px solid #398759}.new-badge{color:#225b3b;background:#e4f5eb;border-radius:4px;padding:0 6px;font-weight:700}.device-note{margin-top:26px;font-size:12px;color:var(--muted);max-width:900px}.small-dialog{width:min(680px,94vw);padding:26px}.small-dialog label{display:block;font-size:14px;font-weight:600;margin:15px 0}.small-dialog input,.small-dialog textarea{display:block;width:100%;border:1px solid #abbdd5;border-radius:6px;padding:10px;margin-top:7px;background:white;font:inherit;color:var(--ink)}.small-dialog select{display:block;margin-top:7px}.small-dialog p{font-size:14px}.small-dialog .hint{font-size:12px;color:var(--muted)}.small-dialog .honey{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}.quiz-answers{display:grid;gap:10px;margin:20px 0}.quiz-answers button{text-align:left}.quiz-answers button:disabled{opacity:.6;cursor:default}#quiz-content>.soft-button{margin:5px}#plan-items{padding-left:22px}#plan-items li{padding:12px 0;border-bottom:1px solid var(--line);font-size:14px}#plan-items li>span:first-child{display:block}.plan-controls{display:flex;gap:8px;margin-top:7px}.plan-controls button{font-size:12px;padding:5px 10px}.plan-banner{padding:15px;border:1px solid #b7d3c4;background:#edf7f1;border-radius:8px;margin:18px 0;font-size:14px}.plan-banner button{margin-left:12px}[hidden]{display:none!important}@media(max-width:1000px){.learning-bar{align-items:flex-start;flex-direction:column}.file-actions{flex-direction:row;flex-wrap:wrap}}@media(max-width:700px){.learning-bar{padding:18px}.learning-bar h2{font-size:20px}.learning-buttons{width:100%}.learning-buttons button{flex:1}.learning-tabs{gap:6px}.learning-tabs button{font-size:12px;padding:9px}.filter-grid{grid-template-columns:1fr}.personal-actions .soft-button{min-height:34px}.small-dialog{padding:18px}.plan-banner button{display:block;margin:10px 0 0}.file-actions{margin-left:55px}.learning-bar .eyebrow{font-size:10px}}

@media(max-width:1000px){.file-info{flex:1 1 calc(100% - 75px)}.file-actions{flex-basis:calc(100% - 60px)}}