.ability-shell{min-width:0;max-width:1160px;margin:0 auto;padding:28px 20px 60px;font-size:16px;line-height:1.65}.ability-shell p,.ability-record{overflow-wrap:anywhere}.ability-heading{justify-content:space-between;align-items:center;gap:20px;margin:24px 0;display:flex}.ability-heading h1{margin:0;font-size:32px}.ability-heading span,.ability-record-meta{color:#626660;font-size:14px}.ability-shell button,.ability-review button,.ability-inline button{cursor:pointer;font:inherit;color:#293324;background:#eef2e8;border:1px solid #c8cfbf;border-radius:10px;padding:9px 14px}.ability-shell button:disabled{opacity:.45;cursor:default}.ability-shell select,.ability-review select,.ability-review textarea{font:inherit;color:#253122;background:#fff;border:1px solid #c8cfbf;border-radius:10px;max-width:100%;padding:10px}.ability-shell label{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.ability-overview{grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin:24px 0;display:grid}.ability-overview article,.ability-panel{background:#fff;border:1px solid #d9dece;border-radius:18px;min-width:0;padding:22px}.ability-overview span{font-size:14px;display:block}.ability-overview strong{font-size:30px}.ability-columns{grid-template-columns:1fr 1fr;gap:18px;margin-bottom:18px;display:grid}.ability-panel h2{margin:0 0 12px;font-size:23px}.ability-count{border-bottom:1px solid #edf0e6;justify-content:space-between;padding:10px 0;display:flex}.ability-plan,.ability-record{border-bottom:1px solid #dde1d5;padding:20px 0}.ability-plan button{margin:4px}.ability-record-meta,.ability-record-actions,.ability-pagination{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.ability-review{min-width:0;max-width:100%}.ability-record-actions:has(.ability-review-form){display:block}.ability-review-form{background:#f6f8f1;border:1px solid #cad2bd;border-radius:14px;min-width:0;max-width:650px;margin:16px 0;padding:20px;font-size:16px}.ability-review-form header,.ability-review-form footer{justify-content:space-between;align-items:center;gap:10px;display:flex}.ability-review-form fieldset{border:0;padding:12px 0}.ability-review-form label{align-items:center;gap:10px;margin:10px 0;line-height:1.5;display:flex}.ability-review-form textarea{width:100%;min-height:80px}.ability-warning{background:#fff0d5;border-radius:12px;padding:14px}.ability-empty{color:#6b7165;padding:16px 0}.ability-pagination{justify-content:center;padding:20px}.ability-inline{margin-top:16px;font-size:16px}.ability-redo{max-width:850px}.ability-redo .ability-options{gap:12px;margin:20px 0;display:grid}.ability-redo .ability-options button{text-align:left}.ability-redo .ability-options .selected{background:#dff2b1}.course-topbar nav{flex-wrap:wrap}.ability-shell .arena-question-table{max-width:100%;overflow:auto}@media (max-width:700px){.ability-shell{padding:20px 12px 40px}.ability-heading{flex-direction:column;align-items:flex-start}.ability-overview{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.ability-overview article,.ability-panel{padding:16px}.ability-columns{grid-template-columns:1fr}.ability-review-form{padding:12px}.ability-heading h1{font-size:28px}}@media (max-width:1050px){.course-topbar nav{gap:6px}.course-topbar nav button{font-size:14px}}@media (max-width:760px){.course-shell .course-topbar{grid-template-columns:1fr auto;gap:4px;height:auto;min-height:110px;padding-top:8px;padding-bottom:6px}.course-shell .course-topbar nav{grid-area:2/1/auto/-1;justify-content:space-between;gap:2px;min-width:0;display:flex!important}.course-shell .course-topbar nav button{white-space:nowrap;min-height:44px;padding:10px 4px;font-size:14px}.course-shell .course-topbar>.auth-entry{grid-area:1/2}.ability-record-actions>button{margin-top:8px}.ability-warning{font-size:14px}.course-shell .variation-timer.variation-timer-floating{bottom:calc(94px + env(safe-area-inset-bottom));max-height:calc(100dvh - 190px)}.course-shell .variation-scratchpad{bottom:calc(94px + env(safe-area-inset-bottom))}.course-shell .variation-scratchpad.open{max-height:calc(100dvh - 205px)}.course-shell .course-topbar{height:70px;min-height:70px}.course-shell .course-topbar nav{grid-template-columns:repeat(5,minmax(0,1fr));gap:2px;display:grid!important}.course-shell .course-topbar nav button{white-space:normal;overflow-wrap:anywhere;padding:0 1px;font-size:14px;line-height:1.25}.course-shell .course-topbar nav button:nth-child(4):before{content:"▤"}.course-shell .course-topbar nav button:nth-child(5):before{content:"◔"}}.ability-tabs{gap:8px;max-width:1120px;margin:24px auto 0;padding:0 20px;display:flex}.ability-tabs button{font:inherit;color:#293324;cursor:pointer;background:#fff;border:1px solid #c8cfbf;border-radius:12px;padding:10px 20px}.ability-tabs button[aria-selected=true]{background:#dff2b1;border-color:#91a873;font-weight:600}@media (max-width:700px){.ability-tabs{margin-top:18px;padding:0 12px}.ability-tabs button{flex:1;padding:10px 12px}}:is(.ability-shell .ability-record-actions,.ability-shell .ability-record-actions:has(.ability-review-form)){grid-template-columns:max-content max-content;justify-content:start;align-items:start;gap:12px;display:grid}.ability-record-actions>.ability-review{display:contents}.ability-shell .ability-record-actions>button,.ability-shell .ability-record-actions>.ability-review>button{grid-row:1;justify-content:center;align-items:center;height:40px;margin:0;padding:9px 14px;font-size:14px;line-height:20px;display:inline-flex}.ability-record-actions>.ability-review>button{grid-column:1}.ability-record-actions>button{grid-column:2}.ability-record-actions .ability-review-form{box-sizing:border-box;grid-area:2/1/auto/-1;width:100%;margin:4px 0 0}@media (max-width:360px){.ability-shell .ability-record-actions{gap:8px}.ability-shell .ability-record-actions>button,.ability-shell .ability-record-actions>.ability-review>button{padding:9px 10px}}.ability-shell{color:#192820;line-height:1.75}.ability-shell .ability-heading{border-bottom:1px solid #dedfd3;margin-bottom:26px;padding:18px 0 24px}.ability-shell .ability-heading>div>span{color:#234e3e;letter-spacing:.08em;align-items:center;gap:9px;font-size:14px;font-weight:700;display:inline-flex}.ability-shell .ability-heading>div>span:before{content:"";background:#6e8b43;border-radius:50%;width:8px;height:8px}.ability-shell .ability-heading h1{letter-spacing:-.035em;margin:12px 0;font-size:clamp(28px,3.4vw,40px)}.ability-shell .ability-heading label{color:#566153;font-size:14px;font-weight:600}.ability-shell select{background:#fffaf0;border-color:#d3c5ad;min-height:42px;font-size:15px}.ability-shell .ability-overview{gap:14px;margin:28px 0 32px}.ability-shell .ability-overview article{background:#fffefa;border:1px solid #dedfd3;border-radius:18px;padding:24px 22px;box-shadow:0 4px 12px #253e2b04}.ability-shell .ability-overview article>span{color:#5c6b5e;font-size:14px;font-weight:600}.ability-shell .ability-overview article>strong{letter-spacing:-.035em;font-variant-numeric:tabular-nums;margin-top:22px;font-size:44px;line-height:1.15;display:block}.ability-shell .ability-overview article:first-child{color:#fffef5;background:#234e3e;border-color:#234e3e}.ability-shell .ability-overview article:first-child>span{color:#e0ebd5}.ability-shell .ability-overview article:nth-child(2){background:#f1f5e9}.ability-shell .ability-overview article:nth-child(3){background:#fbefe4}.ability-shell .ability-panel{background:#fffefa;border:1px solid #dedfd3;border-radius:22px;margin-bottom:24px;padding:28px;box-shadow:0 5px 20px #20382903}.ability-shell .ability-panel h2{letter-spacing:-.02em;margin:0 0 16px;font-size:22px;line-height:1.45}.ability-shell .ability-panel>p{color:#657067;font-size:16px;line-height:1.8}.ability-shell .ability-columns{gap:18px;margin-bottom:24px}.ability-shell .ability-columns .ability-panel{margin-bottom:0}.ability-shell .ability-count{border-color:#ebede5;padding:14px 0;font-size:14px}.ability-shell .ability-count b{color:#234e3e}.ability-shell .ability-plan{background:#f0f4e7;border:1px solid #d9e1cb;border-radius:18px;margin:16px 0;padding:24px}.ability-shell .ability-plan h3{color:#234e3e;margin:0 0 12px;font-size:21px;line-height:1.5}.ability-shell .ability-plan p{color:#607052;margin:12px 0;font-size:16px;line-height:1.85}.ability-shell .ability-plan>button{background:#fffefa;border-color:#ccd6bf;border-radius:9px;font-size:14px}.ability-shell .ability-record{background:#fffaf3;border:1px solid #eddfcd;border-radius:14px;margin:12px 0;padding:20px}.ability-shell .ability-record-meta{color:#647166;font-size:14px}.ability-shell .ability-record-meta b{color:#88562f;background:#f6e7d5;border-radius:6px;padding:3px 9px}.ability-shell .ability-record>p{font-size:16px;line-height:1.8}.ability-shell .ability-record>p:first-of-type{font-size:16px;line-height:1.85}.ability-shell .ability-record-actions>button,.ability-shell .ability-record-actions>.ability-review>button{background:0 0;border-color:#d6c5b1;border-radius:9px;font-size:14px}.ability-shell .ability-record-review{color:#647166;margin:12px 0;font-size:14px}.ability-shell .ability-record-review summary{cursor:pointer}.ability-shell .ability-record-review p{line-height:1.8}.ability-shell .ability-empty{color:#637351;background:#f2f5e8;border:1px dashed #d5dccb;border-radius:12px;padding:22px;font-size:14px}.ability-tabs button{background:0 0;border-color:#cbd0c3;border-radius:30px}.ability-tabs button[aria-selected=true]{color:#fffef5;background:#234e3e;border-color:#234e3e}@media (max-width:700px){.ability-shell .ability-panel{border-radius:16px;padding:20px 16px}.ability-shell .ability-overview article{padding:18px 16px}.ability-shell .ability-overview article>strong{margin-top:16px;font-size:32px}.ability-shell .ability-panel h2{font-size:20px}.ability-shell .ability-plan,.ability-shell .ability-record{padding:16px}}.ability-shell .ability-type-filter{color:#566153;gap:14px;margin:20px 0 24px;font-size:14px;font-weight:600}.ability-select-wrap{min-width:0;max-width:100%;display:inline-flex;position:relative}.ability-shell .ability-select-wrap select{-webkit-appearance:none;appearance:none;box-shadow:none;color:#293c2b;cursor:pointer;background:#fffaf0;border:1px solid #d3c5ad;border-radius:10px;max-width:100%;min-height:44px;padding:10px 40px 10px 14px;font-family:inherit;font-size:15px;font-weight:400;line-height:1.5}.ability-select-wrap:after{content:"";pointer-events:none;border-bottom:1.5px solid #59685e;border-right:1.5px solid #59685e;width:7px;height:7px;position:absolute;top:50%;right:16px;transform:translateY(-70%)rotate(45deg)}.ability-shell .ability-select-wrap select:focus{border-color:#799565;outline:none;box-shadow:0 0 0 3px #79956520}.ability-shell .ability-select-wrap select:focus-visible{outline-offset:2px;outline:2px solid #6e8b43}@media (max-width:600px){.ability-shell .ability-type-filter{gap:10px}.ability-select-wrap{flex:1}.ability-shell .ability-select-wrap select{width:100%}}.ability-retention-note{color:#75806e;margin:12px 0 20px;font-size:14px;line-height:1.7}.course-shell .variation-scratchpad{left:auto;right:max(16px,env(safe-area-inset-right));width:164px;top:92px;bottom:auto}.course-shell .variation-scratchpad.open{-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#ffffffdb;border:1px solid #cbd8cc;border-radius:16px;width:min(460px,100vw - 32px);min-width:min(240px,100vw - 16px);max-width:calc(100vw - 16px);height:min(360px,100dvh - 110px);min-height:min(210px,100dvh - 16px);max-height:calc(100dvh - 16px);box-shadow:0 8px 28px #173f3418}.variation-scratchpad-header{background:#f7faf4f2;border:1px solid #cbd8cc;border-radius:12px;align-items:center;gap:8px;padding:5px;display:flex}.variation-scratchpad-drag{color:#315442;cursor:grab;touch-action:none;white-space:nowrap;background:0 0;border:0;flex:1;min-width:0;padding:7px 4px;font:600 14px/1.3 -apple-system,BlinkMacSystemFont,sans-serif}.variation-scratchpad-drag:active{cursor:grabbing}.course-shell .variation-scratchpad .variation-scratchpad-toggle{background:#e7eee5;border:0;width:auto;min-width:44px;padding:7px 9px;font-weight:600}.variation-scratchpad-header button:focus-visible{outline-offset:2px;outline:2px solid #7aa997}@media (max-width:650px){.course-shell .variation-scratchpad{top:84px;right:12px}.course-shell .variation-scratchpad.open{width:calc(100vw - 24px);height:min(320px,100dvh - 180px)}}.course-shell .variation-scratchpad.open{-webkit-backdrop-filter:none;background:#ffffff1a}.course-shell .variation-scratchpad-body canvas{background-color:#0000;background-image:none}.course-shell .variation-scratchpad-resize{cursor:nesw-resize;border-radius:0 8px 0 10px;left:0;right:auto}.course-shell .variation-scratchpad-actions{padding-left:28px;padding-right:0}.course-shell .variation-scratchpad{width:184px}.course-shell .variation-scratchpad.open{border-color:#bacbb7;border-radius:18px;padding:12px}.course-shell .variation-scratchpad-header{background:0 0;border:0;flex-shrink:0;gap:10px;padding:0}.course-shell .variation-scratchpad-drag{color:#244b39;background:#edf3e3;border:1px solid #b9ceaa;border-radius:10px;flex:0 0 36px;width:36px;height:50px;padding:0;font-size:27px}.variation-scratchpad-name{color:#315442;flex:1;font-size:14px;font-weight:600}.variation-scratchpad-tools{color:#315442;flex:1;min-width:0}.variation-scratchpad-tools p{white-space:normal;margin:0 0 7px;font-size:13px;line-height:1.4}.variation-scratchpad-tools label{white-space:nowrap;align-items:center;gap:8px;font-size:13px;display:flex}.variation-scratchpad-tools input{accent-color:#66815b;cursor:pointer;flex:1;width:0;min-width:30px}.variation-scratchpad-tools output{text-align:center;min-width:14px}.course-shell .variation-scratchpad .variation-scratchpad-toggle{color:#244b39;background:#edf3e3;border:1px solid #b9ceaa;border-radius:10px;min-width:52px;min-height:46px;padding:8px;font-size:16px}.course-shell .variation-scratchpad-body{padding-top:12px}.course-shell .variation-scratchpad-body canvas{border:1px solid #bacbb7;border-radius:12px}.course-shell .variation-scratchpad-actions{flex-shrink:0;gap:10px;margin-top:12px}.course-shell .variation-scratchpad-actions button{background:#f5f8ec;border:1px solid #d4dfc5;border-radius:11px;min-height:38px;padding:8px 12px;font-size:15px;font-weight:600}.course-shell .variation-scratchpad-resize{background:#eef6e8;border-radius:0 12px 0 16px;width:30px;height:30px}@media (max-width:440px){.variation-scratchpad-tools p{font-size:12px}.variation-scratchpad-tools label{gap:5px;font-size:12px}.course-shell .variation-scratchpad-header{gap:7px}}.course-shell .variation-scratchpad:not(.open) .variation-scratchpad-drag{border-radius:11px;flex-basis:36px;height:50px}.course-shell .variation-scratchpad:not(.open) .variation-scratchpad-toggle{white-space:nowrap;background:#edf3e3;border:1px solid #b9ceaa;border-radius:12px;flex:1;min-height:50px;font-size:18px;font-weight:650}@media (hover:hover){.variation-scratchpad-toggle:hover{filter:brightness(.98)}}.variation-scratchpad-toggle:active{transform:scale(.985)}.variation-scratchpad-toggle{transition:transform .15s,filter .15s}@media (prefers-reduced-motion:reduce){.variation-scratchpad-toggle{transition:none}.variation-scratchpad-toggle:active{transform:none}}.course-shell .variation-scratchpad:not(.open) .variation-scratchpad-drag{border-radius:8px;flex-basis:28px;width:28px;height:36px;font-size:21px}.course-shell .variation-scratchpad:not(.open) .variation-scratchpad-toggle{border-radius:9px;min-height:36px;padding:6px 10px;font-size:14px}.course-shell .variation-scratchpad:not(.open){width:148px}.course-shell .variation-scratchpad:not(.open) .variation-scratchpad-header{gap:6px}.course-shell .variation-scratchpad:not(.open) .variation-scratchpad-toggle{padding-inline:7px}.course-shell .variation-scratchpad.open .variation-scratchpad-header{gap:8px}.course-shell .variation-scratchpad.open .variation-scratchpad-drag{border-radius:8px;flex-basis:28px;width:28px;height:36px;font-size:21px}.course-shell .variation-scratchpad.open .variation-scratchpad-tools p{margin-bottom:4px;font-size:12px;line-height:1.3}.course-shell .variation-scratchpad.open .variation-scratchpad-tools label{gap:6px;font-size:12px;line-height:1.3}.course-shell .variation-scratchpad.open .variation-scratchpad-toggle{border-radius:9px;min-width:44px;min-height:36px;padding:6px 8px;font-size:14px}.course-shell .variation-scratchpad.open .variation-scratchpad-body{padding-top:9px}.arena-history-explanation{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.8}.arena-history .ability-record ol{padding-left:1.6em;line-height:1.8}.variation-scratchpad,.variation-scratchpad *{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}.variation-scratchpad{touch-action:none}.ability-model-filters{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:20px 0;display:grid}.ability-model-filters label{color:var(--muted);gap:8px;font-size:14px;display:grid}.ability-model-filters select{background:var(--card);border-color:var(--line);width:100%;min-height:44px}.workbook-model-report{margin-bottom:20px}.workbook-model-report>p{color:var(--muted);font-size:14px}.workbook-model-table{overflow-x:auto}.workbook-model-table table{border-collapse:collapse;text-align:left;width:100%;font-size:14px}.workbook-model-table th,.workbook-model-table td{border-bottom:1px solid var(--line);white-space:nowrap;padding:14px 12px}.workbook-model-table th{color:var(--green);font-weight:600}@media (max-width:650px){.ability-model-filters{grid-template-columns:1fr}}.workbook-primary-summary{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin:18px 0;display:grid}.workbook-primary-summary article{background:var(--card);border:1px solid var(--line);border-radius:12px;gap:8px;padding:16px;display:grid}.workbook-primary-summary span{color:var(--muted);font-size:13px}.workbook-primary-summary strong{color:var(--green);font-size:24px}.site-shortcuts{color:#36543e;box-sizing:border-box;background:0 0;border:0;border-radius:0;flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:10px;width:100%;margin:0 0 20px;padding:0;display:flex;position:static}.site-shortcuts>span{color:#6b7b60;margin-right:auto;font-size:14px}.site-shortcuts a{color:#36543e;white-space:nowrap;background:#edf3dc;border-radius:10px;align-items:center;gap:18px;padding:10px 14px;font-size:14px;font-weight:700;text-decoration:none;display:flex}.site-shortcuts a:hover{background:#e2edc8}.site-shortcuts small:empty{display:none}.site-shortcuts small{flex-basis:100%;font-size:14px;line-height:1.5}.site-shortcuts a:focus-visible{outline-offset:2px;outline:3px solid #8ba660}@media (max-width:600px){.site-shortcuts{gap:8px;padding:0}.site-shortcuts>span{flex-basis:100%}.site-shortcuts a{flex:1;justify-content:space-between;padding:10px;font-size:14px}}.learning-hierarchy{--reading-accent:#245b48}.learning-hierarchy>header{max-width:760px;margin-bottom:28px}.learning-hierarchy>header h1{font-size:clamp(26px,3vw,36px);line-height:1.3}.learning-hierarchy>header p{color:#65706b;font-size:16px;line-height:1.8}.learning-hierarchy .transfer-stages{z-index:auto;background:#fff;border:1px solid #e0e6e2;border-radius:14px;padding:8px;position:static;top:auto;box-shadow:0 4px 18px #182b2010}.learning-hierarchy .transfer-stages button{color:#65706b;box-shadow:none;background:0 0}.learning-hierarchy .transfer-stages button.active{background:var(--reading-accent);color:#fff}.learning-hierarchy .learning-focus{border-left:3px solid var(--reading-accent);background:#f2f6f3;border-radius:0 12px 12px 0;margin:24px 0 32px;padding:20px 24px}.learning-focus>span{color:#647469;margin-bottom:8px;font-size:14px;display:block}.learning-focus>strong{color:#20382d;font-size:21px;line-height:1.5;display:block}.learning-focus>p{color:#65706b;margin:8px 0 0;font-size:16px;line-height:1.7}.learning-hierarchy .four-stage-reading-resume{background:0 0;border:0;margin-bottom:24px;font-size:14px}.learning-hierarchy .transfer-paper{box-shadow:none;border:1px solid #e2e7e3;padding:clamp(20px,4vw,44px)}.learning-hierarchy .four-stage-example{max-width:960px;margin-inline:auto}.learning-hierarchy .example-model-tabs{gap:6px;margin-bottom:32px}.learning-hierarchy .example-model-tabs button{box-shadow:none;background:#f6f7f6;border-color:#0000}.learning-hierarchy .example-model-tabs button.active{color:#245b48;background:#edf4ef;border-color:#8da99a}.learning-hierarchy .example-model-tabs small,.learning-hierarchy .example-source-label{color:#737c76;font-weight:400}.learning-hierarchy .example-source-head h2{font-size:23px;line-height:1.5}.learning-hierarchy .four-stage-example>blockquote{border-left:3px solid var(--reading-accent);color:#202d25;background:#f6f8f6;margin:28px 0 20px;padding:24px;font-size:clamp(18px,2vw,22px);line-height:1.9}.learning-hierarchy .four-stage-reading-status{color:#737c76;background:0 0;border:0;font-size:14px}.learning-hierarchy .source-choice-list{margin-bottom:36px}.learning-hierarchy .reading-disclosure{box-shadow:none;background:0 0;border:0;border-top:1px solid #e1e7e2;border-radius:0;margin:0;padding:0}.learning-hierarchy .reading-disclosure>summary{cursor:pointer;align-items:center;gap:14px;padding:22px 0;list-style:none;display:flex}.learning-hierarchy summary::-webkit-details-marker{display:none}.learning-hierarchy .reading-disclosure>summary>i{color:#6a8273;background:#edf3ef;border-radius:6px;padding:7px;font-size:14px;font-style:normal}.learning-hierarchy .reading-disclosure summary b{color:#25362b;font-size:18px;display:block}.learning-hierarchy .reading-disclosure summary small{color:#7a837c;margin-top:4px;font-size:14px;display:block}.learning-hierarchy .disclosure-cue{color:#7a837c;white-space:nowrap;margin-left:auto;font-size:14px}.learning-hierarchy .reading-disclosure-body{padding:0 0 28px;line-height:1.85}.learning-hierarchy .reading-disclosure-body>ol{margin-top:0}.learning-hierarchy .dual-methods .reading-disclosure-body>div{display:block}.learning-hierarchy .dual-methods article{box-shadow:none;background:0 0;border:0;padding:12px 0}.learning-hierarchy .method-alternative{background:0 0;border-top:1px dashed #dce4dd;margin-top:24px}.learning-hierarchy .method-alternative>summary,.learning-hierarchy .model-disclosure>summary{cursor:pointer;color:var(--reading-accent);padding:18px 0;font-weight:600;list-style:none}.learning-hierarchy .method-alternative>summary:after,.learning-hierarchy .model-disclosure>summary:after{content:" ＋"}.learning-hierarchy .method-alternative[open]>summary:after,.learning-hierarchy .model-disclosure[open]>summary:after{content:" −"}.learning-hierarchy .model-disclosure{border-top:1px solid #e1e7e2;margin-top:28px}.learning-hierarchy .family-detail-grid{gap:20px}.learning-hierarchy .family-detail-grid>div{background:0 0;border:0;padding:12px 0}.learning-hierarchy .family-tools,.learning-hierarchy .family-chapters{opacity:1;color:#737c76;border-top:1px solid #e8ece8;margin-top:24px;padding-top:16px}.learning-hierarchy .eq-next{background:var(--reading-accent);color:#fff;margin-top:32px}.learning-hierarchy summary:focus-visible{outline:2px solid var(--reading-accent);outline-offset:4px;border-radius:4px}@media (max-width:700px){.learning-hierarchy .transfer-stages{gap:4px;top:auto}.learning-hierarchy .transfer-stages button{padding:10px 6px;font-size:14px}.learning-hierarchy .learning-focus{padding:18px}.learning-hierarchy .example-source-head{display:block}.learning-hierarchy .example-picker-wrap{margin-top:16px}.learning-hierarchy .four-stage-example>blockquote{padding:18px}.learning-hierarchy .disclosure-cue{font-size:14px}.learning-hierarchy .breakdown-grid{grid-template-columns:1fr}}.learning-hierarchy .dual-methods>.reading-disclosure-body,.learning-hierarchy .compare-group>.reading-disclosure-body{display:block}.learning-hierarchy .compare-group .reading-disclosure-body>div{grid-template-columns:1fr 1fr;gap:16px;display:grid}@media (max-width:700px){.learning-hierarchy .compare-group .reading-disclosure-body>div{grid-template-columns:1fr}}.learning-hierarchy .transfer-stages{box-shadow:none;gap:4px;padding:6px}.learning-hierarchy .transfer-stages button{border-radius:8px;padding:12px;font-size:14px}.learning-hierarchy .transfer-stages button.active{color:#245b48;background:#eaf1e9;box-shadow:inset 0 -2px #245b48}.learning-hierarchy .transfer-stages button i{color:#69766d;background:#edf0ea;border-radius:50%;flex:0 0 26px;width:26px;height:26px}.learning-hierarchy .transfer-stages button.active i{color:#fff;background:#245b48}.learning-hierarchy .transfer-stages button.done:not(.active){color:#63786a;background:0 0}@media (max-width:700px){.learning-hierarchy .transfer-stages button{padding:10px 8px;font-size:14px}}.learning-hierarchy .variation-learning-breakdown{border-top:0;margin-top:24px;padding-top:0;display:block}.learning-hierarchy .variation-stage .variation-learning-breakdown>.reading-disclosure{background:0 0;border:0;border-top:1px solid #e1e7e2;border-radius:0;padding:0}.learning-hierarchy .variation-learning-breakdown .dual-methods article{box-shadow:none;background:0 0;border:0;padding:12px 0}.learning-hierarchy .variation-learning-breakdown .breakdown-grid p{border:0}.learning-hierarchy .analysis-overview{background:#edf3ed;border-radius:12px;grid-template-columns:1fr 2fr;gap:16px;margin:28px 0;padding:24px;display:grid}.learning-hierarchy .analysis-overview small{color:#647469;font-size:14px;display:block}.learning-hierarchy .analysis-overview strong{color:#245b48;margin-top:6px;font-size:21px;display:block}.learning-hierarchy .analysis-overview p{grid-column:1/-1;margin:0;font-size:16px;line-height:1.85}.learning-hierarchy .analysis-overview p>b{margin-bottom:4px;display:block}.learning-hierarchy .analysis-overview .analysis-pitfall{border-top:1px solid #d9e3da;padding-top:14px}.learning-hierarchy .analysis-methods{margin-bottom:32px}.learning-hierarchy .analysis-method-switch{background:#f1f4ef;border-radius:10px;gap:8px;padding:6px;display:flex}.learning-hierarchy .analysis-method-switch button{color:#65706b;cursor:pointer;background:0 0;border:0;border-radius:7px;flex:1;padding:12px 16px;font-size:16px}.learning-hierarchy .analysis-method-switch button[aria-pressed=true]{color:#245b48;background:#fff;box-shadow:0 1px 4px #20352010}.learning-hierarchy .analysis-method-switch button:focus-visible{outline:2px solid #245b48}.learning-hierarchy .analysis-method-content>article{box-shadow:none;background:0 0;border:0;padding:24px 0}.learning-hierarchy .analysis-method-content h3{margin:8px 0 24px;font-size:22px;line-height:1.5}.learning-hierarchy .analysis-method-content article>span{color:#65706b;font-size:14px}.learning-hierarchy .analysis-method-content .method-walkthrough{margin:0}@media (max-width:700px){.learning-hierarchy .analysis-overview{grid-template-columns:1fr;padding:18px}}.learning-hierarchy .analysis-overview{background:#f2f5ef;border:1px solid #dce5da;gap:20px 28px;padding:24px}.learning-hierarchy .analysis-overview>div:first-child{background:#fffdf7;border:1px solid #dce5da;border-radius:10px;align-self:start;padding:18px 22px}.learning-hierarchy .analysis-overview>div:first-child strong{font-variant-numeric:tabular-nums;font-size:32px;line-height:1.25}.learning-hierarchy .analysis-overview>div:nth-child(2){align-self:center;padding:8px 0}.learning-hierarchy .analysis-overview>p:not(.analysis-pitfall){background:#ffffff85;border-left:3px solid #6e927c;border-radius:0 8px 8px 0;padding:18px 20px}.learning-hierarchy .analysis-overview p>b{color:#5d7061;margin-bottom:8px;font-size:14px;font-weight:600}.learning-hierarchy .analysis-overview .analysis-pitfall{color:#5e5039;background:#faf5e9;border:1px solid #e7dcc5;border-radius:8px;padding:16px 20px}.learning-hierarchy .analysis-overview .analysis-pitfall>b{color:#856b46}.learning-hierarchy .analysis-method-content>article{background:#fffdf8;border:1px solid #e3dfd3;border-radius:12px;margin-top:16px;padding:28px}.learning-hierarchy .analysis-method-content article>span{color:#42644e;background:#edf2e9;border-radius:5px;padding:4px 10px;display:inline-block}.learning-hierarchy .analysis-method-content h3{margin:14px 0 24px}.learning-hierarchy .analysis-method-content .method-walkthrough>div{border-top:1px solid #eee8dc;grid-template-columns:100px minmax(0,1fr);gap:20px;padding:20px 0;display:grid}.learning-hierarchy .analysis-method-content .method-walkthrough dt{color:#697365;font-size:14px;font-weight:600;line-height:1.8}.learning-hierarchy .analysis-method-content .method-walkthrough dd{min-width:0;line-height:1.9}.learning-hierarchy .analysis-method-content .regular-solution-steps{gap:12px;margin:0;padding:0;list-style:none;display:grid}.learning-hierarchy .analysis-method-content .regular-solution-steps li{background:#f4f6ef;border:1px solid #e6e9de;border-radius:8px;padding:16px 18px;line-height:1.85}.learning-hierarchy .analysis-method-content .regular-solution-steps li>b{color:#315b43;margin-bottom:6px;display:block}.learning-hierarchy .analysis-method-content .method-walkthrough>.method-answer{background:#edf4e8;border:1px solid #d8e5cf;border-radius:8px;padding:18px 20px}.learning-hierarchy .analysis-method-content .method-walkthrough>.method-warning{background:#faf5e9;border:1px solid #e7dcc5;border-radius:8px;padding:18px 20px}@media (max-width:700px){.learning-hierarchy .analysis-overview{gap:16px;padding:16px}.learning-hierarchy .analysis-overview>div:first-child{padding:14px 18px}.learning-hierarchy .analysis-method-content>article{padding:20px 16px}.learning-hierarchy .analysis-method-content .method-walkthrough>div{grid-template-columns:1fr;gap:6px}}.learning-hierarchy .reading-disclosure-body>ol{counter-reset:reading-item;gap:12px;margin:0;padding:0;list-style:none;display:grid}.learning-hierarchy .reading-disclosure-body>ol>li{counter-increment:reading-item;color:#38483b;background:#fffdf8;border:1px solid #e1e7db;border-radius:9px;padding:18px 20px 18px 58px;font-size:16px;line-height:1.9;position:relative}.learning-hierarchy .reading-disclosure-body>ol>li:before{content:counter(reading-item, decimal-leading-zero);color:#42664c;background:#edf3e8;border-radius:6px;place-items:center;width:26px;height:26px;font-size:12px;font-weight:600;line-height:1;display:grid;position:absolute;top:19px;left:18px}.learning-hierarchy .reading-disclosure-body>ol>li>b{color:#245b48;margin-bottom:7px;font-size:16px;font-weight:650;line-height:1.6;display:block}@media (max-width:700px){.learning-hierarchy .reading-disclosure-body>ol>li{padding:16px 14px 16px 50px}.learning-hierarchy .reading-disclosure-body>ol>li:before{top:17px;left:14px}}.module-workbook-entry{text-align:left;color:#193c30;cursor:pointer;background:#edf2e8;border:1px solid #cdbda5;border-radius:16px;justify-content:space-between;align-items:center;gap:24px;width:100%;margin-top:32px;padding:30px;display:flex}.module-workbook-entry h2{margin:8px 0;font-size:28px}.module-workbook-entry p{margin:8px 0;line-height:1.7}.module-workbook-entry i{white-space:nowrap;font-style:normal}.workbook-filters{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:24px 0;display:grid}.workbook-filters label{gap:8px;font-weight:700;display:grid}.workbook-filters select{width:100%;color:inherit;background:#fffdf7;border:1px solid #cdbda5;border-radius:10px;padding:12px}.workbook-question-nav{flex-wrap:wrap;gap:8px;max-height:210px;margin:24px 0;display:flex;overflow:auto}.workbook-question-nav button,.workbook-actions button{color:#214b3c;cursor:pointer;background:#fffdf7;border:1px solid #cdbda5;border-radius:8px;padding:10px 16px}.workbook-question-nav button[aria-current=true]{color:var(--card);background:#214b3c}.workbook-question-nav .completed{border-color:#478267}.workbook-paper{background:#fffdf7;border:1px solid #cdbda5;border-radius:16px;padding:28px}.workbook-paper>header{flex-wrap:wrap;justify-content:space-between;gap:12px;display:flex}.workbook-stem{white-space:pre-wrap;margin:28px 0;font-size:22px;font-weight:500;line-height:1.9}.workbook-choices{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:24px 0;display:grid}.workbook-choices button{text-align:left;background:var(--card);color:inherit;white-space:pre-wrap;border:1px solid #cdbda5;border-radius:12px;padding:18px;line-height:1.7}.workbook-choices button[aria-pressed=true]{background:#e3eedf;border:2px solid #285b46}.workbook-choices button:disabled{opacity:1}.workbook-notice{color:#614b25;background:#f5eddc;border-radius:10px;padding:16px;line-height:1.8}.workbook-analysis{margin-top:28px}.workbook-analysis .method-walkthrough li{margin-bottom:12px;line-height:1.9}.workbook-actions{gap:12px;margin:24px 0;display:flex}.workbook-actions button:disabled{opacity:.45}.workbook-diagram{max-width:100%;height:auto}.module-workbook :focus-visible{outline-offset:3px;outline:3px solid #4d816a}@media (max-width:650px){.module-workbook-entry{flex-direction:column;align-items:flex-start;padding:20px}.workbook-filters,.workbook-choices{grid-template-columns:1fr}.workbook-paper{padding:18px}.workbook-stem{font-size:19px}}.module-workbook .practice-center-head{padding:32px 0 18px}.module-workbook .practice-center-head>div:last-child{width:100%;display:block}.module-workbook .practice-center-head h1{margin:10px 0 14px;font-size:clamp(34px,4vw,48px)}.module-workbook .practice-center-head p{max-width:none;margin:6px 0;line-height:1.8}.module-workbook .practice-center-head>div>span{color:#63756a;font-size:14px;display:block}.workbook-filter-summary{color:#56655c;line-height:1.8}.module-workbook-entry,.module-workbook{font-optical-sizing:auto;font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,PingFang SC,sans-serif}.module-workbook-entry{background:var(--card);border:1px solid var(--line);color:var(--ink);border-radius:24px;justify-content:flex-start;gap:24px;margin:0 0 40px;padding:32px 36px;transition:box-shadow .18s,border-color .18s;box-shadow:0 4px 24px #00000004}.module-workbook-entry:hover{border-color:#9fb09e;box-shadow:0 8px 30px #00000008}.module-workbook-entry:active{background:#f3eddf}.workbook-entry-icon{width:64px;height:64px;color:var(--green);background:#e8efdf;border-radius:18px;flex:none;place-items:center;display:grid}.module-workbook-entry>div{flex:1}.module-workbook-entry>div>span{color:var(--muted);letter-spacing:.04em;font-size:12px;font-weight:500}.module-workbook-entry h2{letter-spacing:-.025em;margin:8px 0;font-size:28px;font-weight:600}.module-workbook-entry p{color:#46554b;margin:8px 0;font-size:15px}.module-workbook-entry small{color:var(--muted);font-size:12px;line-height:1.8}.module-workbook-entry i{color:var(--green);align-items:center;gap:20px;font-size:14px;font-weight:500;display:flex}.module-workbook-entry i>span{background:#f3eddf;border-radius:50%;place-items:center;width:36px;height:36px;font-size:20px;display:grid}.workbook-section-label{color:var(--ink);justify-content:space-between;align-items:center;margin:0 0 20px;font-size:18px;font-weight:600;display:flex}.workbook-section-label span{color:var(--muted);font-size:13px;font-weight:400}.module-workbook{max-width:1120px;color:var(--ink);background:#f3eddf;border-radius:28px;margin:auto;padding:clamp(20px,4vw,48px)}.module-workbook .back-button{color:var(--muted);font-size:14px}.module-workbook .practice-center-head{max-width:none;margin-bottom:28px;padding:28px 0 0}.module-workbook .practice-center-head h1{letter-spacing:-.035em;color:var(--ink);font-size:clamp(32px,4vw,44px);font-weight:600}.module-workbook .practice-center-head p{color:var(--muted);font-size:15px}.module-workbook .practice-center-head>div>span{color:var(--muted);letter-spacing:.06em;font-size:12px}.workbook-stats{gap:0;margin:28px 0 14px;display:flex}.workbook-stats>div{border-right:1px solid var(--line);gap:7px;padding:0 32px;display:grid}.workbook-stats>div:first-child{padding-left:0}.workbook-stats>div:last-child{border:0}.workbook-stats strong{letter-spacing:-.04em;font-variant-numeric:tabular-nums;font-size:28px;font-weight:600;line-height:1.2}.workbook-stats span,.workbook-save-note{color:var(--muted);font-size:12px}.workbook-filters{background:var(--card);border:1px solid var(--line);border-radius:18px;gap:20px;margin:24px 0 14px;padding:20px}.workbook-filters label{color:var(--muted);gap:9px;font-size:12px;font-weight:500}.workbook-filters select{min-height:44px;color:var(--ink);cursor:pointer;background:#f3eddf;border-color:#0000;border-radius:9px;padding:10px 12px;font-size:14px}.workbook-filter-summary{color:var(--muted);font-size:12px;line-height:1.8}.workbook-question-nav{gap:8px;margin:22px 0 28px}.workbook-question-nav button{background:var(--card);color:#46554b;font-variant-numeric:tabular-nums;border:1px solid #0000;border-radius:12px;min-width:44px;min-height:44px;padding:10px;font-size:13px}.workbook-question-nav button:hover{border-color:#9fb09e}.module-workbook .workbook-question-nav button[aria-current=true]{background:var(--green);color:var(--card)}.workbook-question-nav .completed{color:var(--green);background:#e8efdf}.module-workbook .workbook-paper{background:var(--card);border:1px solid var(--line);border-radius:22px;max-width:none;padding:clamp(20px,4vw,40px)}.workbook-paper>header{color:var(--muted);font-size:13px}.module-workbook .workbook-paper>.workbook-stem{color:var(--ink);background:#f3eddf;border-left:0;border-radius:14px;padding:24px;font-size:clamp(18px,2vw,21px);font-weight:400}.workbook-choices button{border:1px solid var(--line);background:var(--card);min-height:56px;color:var(--ink);cursor:pointer;border-radius:12px}.workbook-choices button:hover:not(:disabled){background:#f3eddf}.workbook-choices button[aria-pressed=true]{border:1px solid var(--green);box-shadow:0 0 0 1px var(--green);background:#e8efdf}.module-workbook .eq-next{border-radius:12px;min-height:46px}.workbook-notice{background:#f5eddc;font-size:14px}.workbook-actions button{border-color:var(--line);background:#f3eddf;border-radius:10px;min-height:44px;font-size:14px}:is(.module-workbook :focus-visible,.module-workbook-entry:focus-visible){outline:3px solid var(--green);outline-offset:4px}@media (max-width:650px){.module-workbook-entry{border-radius:20px;grid-template-columns:48px 1fr;gap:18px;margin-bottom:30px;padding:24px;display:grid}.workbook-entry-icon{border-radius:14px;align-self:start;width:48px;height:48px}.module-workbook-entry h2{font-size:25px}.module-workbook-entry i{grid-column:2;justify-content:space-between;width:100%}.module-workbook{border-radius:20px;padding:18px}.workbook-stats>div{padding:0 22px}.workbook-filters{gap:16px;padding:18px}.module-workbook .workbook-paper>.workbook-stem{padding:18px}.workbook-section-label{font-size:16px}}@media (prefers-reduced-motion:reduce){.module-workbook-entry{transition:none}}.workbook-save-note button{border:1px solid var(--line);background:var(--card);min-height:36px;color:var(--green);font:inherit;cursor:pointer;border-radius:8px;margin-left:10px;padding:6px 10px}.workbook-analysis>.ability-review{margin:16px 0}.arena-solution-frame{gap:12px;display:grid}.arena-solution-frame>section{border:1px solid var(--line);background:#f8f0df;border-radius:12px;margin:0;padding:16px 18px}.arena-solution-frame h3{color:#244f3d;margin:0 0 9px;font-size:16px}.arena-solution-frame p{margin:6px 0}.arena-solution-frame ol{margin:0;padding-left:24px}.arena-solution-frame li>b{color:#9b522d}.arena-solution-frame>section:nth-child(4){background:#faeadb;border-color:#e9b48e}.arena-solution-frame>section:nth-child(5){background:#f3f8f1;border-color:#b9d1bc}.arena-intro-choice{max-width:1100px}.arena-entry-grid{text-align:left;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:34px;display:grid}.arena-entry-grid article{background:#fff;border:1px solid #d8cebe;border-radius:18px;flex-direction:column;min-height:260px;padding:28px;display:flex}.arena-entry-grid article>i{color:#fff;background:#174c3b;border-radius:12px;place-items:center;width:44px;height:44px;font-style:normal;font-weight:900;display:grid}.arena-entry-grid h2{margin:20px 0 8px;font-size:28px}.arena-entry-grid article>p{color:#667069;flex:1;margin:0 0 24px;line-height:1.7}.arena-entry-grid .start-button{width:100%;font-size:16px}.arena-entry-grid .start-button.secondary{color:#fff;background:#f58243}.arena-library-total{color:#53635b;background:#fffaf1;border:1px solid #d4cbbb;border-radius:999px;padding:10px 16px;font-weight:800}.arena-library-header{color:#fff;background:#174c3b;border:1px solid #d4cbbb;border-radius:22px;margin-bottom:24px;padding:34px}.arena-library-header>span{color:#c9f35a;letter-spacing:.08em;font-weight:900}.arena-library-header h1{letter-spacing:-.045em;max-width:920px;margin:12px 0;font-size:clamp(36px,5vw,64px);line-height:1.08}.arena-library-header p{color:#dce9e2;max-width:800px;margin:0;font-size:17px;line-height:1.75}.arena-library-course-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-bottom:18px;display:grid}.arena-library-course-grid button{color:#243c32;text-align:left;background:#fffaf1;border:1px solid #d4cbbb;border-radius:13px;flex-direction:column;justify-content:center;align-items:flex-start;gap:6px;min-height:82px;padding:14px 16px;display:flex}.arena-library-course-grid button.selected{background:#e7f0df;border-color:#47745f;box-shadow:inset 0 0 0 1px #47745f}.arena-library-course-grid b{font-size:15px;line-height:1.35}.arena-library-course-grid span{color:#7b756b;font-size:14px}.arena-library-filters{background:#f7f1e6;border:1px solid #d4cbbb;border-radius:16px;grid-template-columns:1fr 1fr 1.4fr;gap:12px;margin:18px 0;padding:18px;display:grid}.arena-library-filters label,.arena-library-select{gap:7px;min-width:0;display:grid}.arena-library-filters label>span,.arena-library-select>span{color:#6d6a62;font-size:14px;font-weight:800}.arena-library-filters input{color:#173d30;width:100%;height:48px;font:inherit;box-shadow:none;background:#fffaf1;border:1px solid #cec3b3;border-radius:10px;padding:0 13px}.arena-library-select details{min-width:0;position:relative}.arena-library-select summary{color:#173d30;cursor:pointer;background:#fffaf1;border:1px solid #cec3b3;border-radius:10px;justify-content:space-between;align-items:center;gap:12px;height:48px;padding:0 13px;font-weight:750;list-style:none;display:flex}.arena-library-select summary::-webkit-details-marker{display:none}.arena-library-select summary:after{content:"▾";color:#174c3b;flex:none;font-size:16px}.arena-library-select details[open] summary{background:#f3eadc;border-color:#47745f;border-radius:10px 10px 0 0}.arena-library-select details[open] summary:after{content:"▴"}.arena-library-select details>div{z-index:30;background:#fffaf1;border:1px solid #47745f;border-radius:0 0 12px 12px;width:100%;max-height:360px;padding:6px;position:absolute;top:calc(100% - 1px);left:0;overflow:auto}.arena-library-select details>div button{color:#26493b;width:100%;font:inherit;text-align:left;background:#fffaf1;border:0;border-radius:7px;grid-template-columns:22px minmax(0,1fr);align-items:center;padding:10px 9px;font-weight:650;display:grid}:is(.arena-library-select details>div button:hover,.arena-library-select details>div button:focus-visible){background:#f2e8d9;outline:none}.arena-library-select details>div button.selected{color:#174c3b;background:#dfedcf;font-weight:850}.arena-library-select details>div button i{text-align:center;font-style:normal}.arena-library-result-bar{justify-content:space-between;align-items:center;margin:22px 0 12px;display:flex}.arena-library-result-bar b{font-size:20px}.arena-library-result-bar button{color:#9b522d;background:0 0;border:0;font-weight:800}.arena-library-list{gap:16px;display:grid}.arena-library-question{background:#fffaf1;border:1px solid #d4cbbb;border-radius:17px;padding:26px}.arena-library-question>header{justify-content:space-between;align-items:flex-start;gap:18px;margin-bottom:20px;display:flex}.arena-library-question>header>div{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.arena-library-question>header span,.arena-library-question>header b,.arena-library-question>header em{border-radius:999px;padding:7px 11px;font-size:16px;font-style:normal}.arena-library-question>header span{color:#fff;background:#174c3b}.arena-library-question>header b{color:#214b38;background:#dff0c7}.arena-library-question>header em{color:#8d4b2c;background:#f4e5cf}.arena-library-question>header small{color:#77756e;white-space:nowrap;font-weight:700}.arena-library-options{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;margin:20px 0;display:grid}.arena-library-options p{background:#fff;border:1px solid #ddd3c4;border-radius:10px;gap:12px;margin:0;padding:13px 15px;line-height:1.55;display:flex}.arena-library-options b{color:#9b522d}.arena-library-answer-toggle{color:#fff;background:#174c3b;border:0;border-radius:10px;padding:12px 18px;font-weight:850}.arena-library-solution{box-sizing:border-box;background:#f1f7ed;border:1px solid #b9d1bc;border-radius:14px;width:100%;min-width:0;max-width:100%;margin-top:16px;padding:20px}.arena-library-solution>div{flex-wrap:wrap;align-items:baseline;gap:12px;min-width:0;margin-bottom:16px;display:flex}.arena-library-solution>div strong{color:#9b522d;font-size:24px}.arena-library-solution>div span{color:#5f6e65}.arena-library-solution dl{gap:10px;width:100%;min-width:0;max-width:100%;margin:0;display:grid}.arena-library-solution dl>div{border-top:1px solid #d2dfcd;grid-template-columns:100px minmax(0,1fr);gap:16px;min-width:0;padding-top:10px;display:grid}.arena-library-solution dt{color:#31624c;font-weight:850}.arena-library-solution dd{overflow-wrap:anywhere;word-break:break-word;min-width:0;margin:0;line-height:1.7}.arena-library-solution ol{margin:0;padding-left:22px}.arena-library-solution ol,.arena-library-solution li{overflow-wrap:anywhere;word-break:break-word;min-width:0;max-width:100%}.arena-library-empty{text-align:center;color:#77756e;border:1px dashed #c9bdac;border-radius:16px;padding:48px}.arena-library-more{color:#174c3b;background:#fffaf1;border:1px solid #174c3b;border-radius:999px;margin:22px auto 0;padding:13px 24px;font-weight:850;display:block}.arena-library{width:100%;min-width:0;max-width:100%}.arena-library-list{grid-template-columns:minmax(0,1fr)}.arena-library-question{box-sizing:border-box;width:100%;min-width:0;max-width:100%}.arena-library-question .arena-question-stem{overflow-wrap:anywhere;word-break:break-word;min-width:0;max-width:100%}.arena-library-question .arena-library-options p{overflow-wrap:anywhere;word-break:break-word;min-width:0}.arena-library-question .arena-library-options p>*{min-width:0}@media (max-width:820px){.arena-entry-grid{grid-template-columns:1fr}.arena-library-course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.arena-library-filters{grid-template-columns:1fr}}@media (max-width:520px){.arena-library-header{padding:25px 20px}.arena-library-course-grid{grid-template-columns:1fr 1fr}.arena-library-question{padding:20px 16px}.arena-library-question>header{flex-direction:column;min-width:0}.arena-library-question>header small{white-space:normal;overflow-wrap:anywhere}.arena-library-options{grid-template-columns:1fr}.arena-library-solution dl>div{grid-template-columns:minmax(0,1fr);gap:4px}}.arena-library-practice-actions{background:#f3eee4;border:1px solid #ded6c8;border-radius:14px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:18px;margin:20px 0 16px;padding:18px 20px;display:flex}.arena-library-clock{color:#244c3a;align-items:center;gap:12px;min-width:140px;display:flex}.arena-library-clock>svg{fill:none;stroke:currentColor;stroke-width:1.7px;stroke-linecap:round;stroke-linejoin:round;background:#fffaf1;border:1px solid #d6d9c9;border-radius:11px;flex:none;width:38px;height:38px;padding:8px}.arena-library-clock>div{gap:4px;display:grid}.arena-library-clock small{color:#74776a;font-size:12px;font-weight:650;line-height:1.4}.arena-library-clock strong{font-variant-numeric:tabular-nums;letter-spacing:.025em;font-size:22px;font-weight:800;line-height:1.2}.arena-library-clock strong:only-child{letter-spacing:0}.arena-library-action-buttons{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.arena-library-practice-actions button{color:#315442;cursor:pointer;background:#fffaf1;border:1px solid #c9cbbc;border-radius:10px;justify-content:center;align-items:center;gap:8px;min-height:46px;padding:12px 18px;font-family:inherit;font-size:14px;font-weight:750;line-height:1.4;transition:background-color .12s,border-color .12s,box-shadow .12s;display:inline-flex}.arena-library-action-buttons svg{fill:none;stroke:currentColor;stroke-width:1.8px;stroke-linecap:round;stroke-linejoin:round;flex:none;width:18px;height:18px}.arena-library-practice-actions .arena-library-submit-button{color:#fffaf1;background:#174c3b;border-color:#174c3b;box-shadow:0 2px 3px #174c3b12}.arena-library-practice-actions button:hover:not(:disabled){background:#e8eedf;border-color:#77917c}.arena-library-practice-actions .arena-library-submit-button:hover:not(:disabled){background:#236047;border-color:#236047}.arena-library-practice-actions button:active:not(:disabled){box-shadow:inset 0 2px 4px #173e301c}.arena-library-practice-actions button:focus-visible{outline-offset:3px;outline:3px solid #e49a61}.arena-library-practice-actions button:disabled{opacity:1;color:#909287;box-shadow:none;cursor:not-allowed;background:#e1dfd5;border-color:#d7d3c7}.arena-library-practice-actions.is-running{background:#edf2e5;border-color:#bac9ad}.arena-library-practice-actions .arena-library-timer-button.is-running{background:#e0e9d5;border-color:#9aae90}.arena-library-practice-actions.is-submitted{background:#f1f3e9;border-color:#d3dcc6}.arena-library-submitted-label{color:#60755e;align-items:center;gap:5px;margin-right:4px;font-size:13px;font-weight:650;display:inline-flex}.arena-library-review{background:#e7f0df;border-radius:12px;margin:16px 0;padding:16px}.arena-library-review>p{margin:0 0 12px;line-height:1.65}@media (max-width:600px){.arena-library-practice-actions{gap:16px;padding:16px}.arena-library-clock{width:100%}.arena-library-action-buttons{grid-template-columns:1fr 1fr;gap:8px;width:100%;display:grid}.arena-library-practice-actions button{min-height:46px;padding:12px 8px;font-size:13px}.arena-library-submitted-label{justify-self:start}.arena-library-clock strong{font-size:24px}}@media (prefers-reduced-motion:reduce){.arena-library-practice-actions button{transition:none}}.arena-random-option{color:#657367;font:inherit;cursor:pointer;background:0 0;border:0;padding:12px 0;font-size:14px;display:inline-flex}.arena-set-switch-actions{flex-wrap:wrap;align-items:center;gap:16px;display:flex}.arena-set-picker>.back-button{margin-bottom:20px}.arena-set-picker-toolbar{justify-content:space-between;align-items:end;gap:20px;margin:24px 0 18px;display:flex}.arena-set-picker-toolbar label{color:#315442;gap:8px;width:min(100%,520px);font-weight:750;display:grid}.arena-set-picker-toolbar input{width:100%;min-height:48px;font:inherit;color:#173d30;background:#fffaf1;border:1px solid #cec3b3;border-radius:10px;padding:12px 14px}.arena-set-picker-toolbar>span{white-space:nowrap;color:#69736d;font-size:14px}.arena-set-picker-list{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-bottom:24px;display:grid}.arena-set-picker-list button{text-align:left;color:#244c3a;min-width:0;font:inherit;cursor:pointer;background:#fffaf1;border:1px solid #d4cbbb;border-radius:13px;grid-template-columns:1fr auto;gap:10px;padding:20px;display:grid}.arena-set-picker-list button b{overflow-wrap:anywhere;font-size:16px}.arena-set-picker-list button span{color:#70796b;grid-column:1;font-size:14px}.arena-set-picker-list button i{grid-area:1/2/3;align-self:center;font-style:normal}.arena-set-picker-list button.selected{background:#e7f0df;border-color:#47745f;box-shadow:inset 0 0 0 1px #47745f}.arena-set-picker-list button:focus-visible{outline-offset:3px;outline:3px solid #e99855}.arena-set-start-button:focus-visible{outline-offset:3px;outline:3px solid #e99855}.arena-set-picker-start{background:#f5f6ed;border:1px solid #c2cbb6;border-radius:14px;justify-content:space-between;align-items:center;gap:18px;padding:18px 22px;display:flex;position:sticky;bottom:20px;box-shadow:0 5px 18px #183f3015}.arena-set-picker-start>div{gap:6px;min-width:0;display:grid}.arena-set-picker-start small{color:#6b7766}.arena-set-start-button{color:#fffaf1;font:inherit;cursor:pointer;background:#174c3b;border:0;border-radius:10px;flex-shrink:0;padding:14px 20px;font-weight:800}@media (max-width:900px){.arena-set-picker-list{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:600px){.arena-set-picker-list{grid-template-columns:1fr}.arena-set-picker-toolbar{flex-direction:column;align-items:stretch;gap:10px}.arena-set-picker-start{flex-direction:column;align-items:stretch;padding:16px;bottom:80px}.arena-set-switch-actions{gap:8px}}.arena-random-option{color:#315442;background:#edf2e6;border:1px solid #bdc9b8;border-radius:10px;justify-content:center;align-items:center;gap:10px;min-height:48px;padding:13px 18px;font-size:16px;font-weight:600;line-height:1.5;transition:transform .18s cubic-bezier(.2,.8,.2,1),background-color .18s,border-color .18s,box-shadow .18s;box-shadow:0 1px 4px #18382c0f}.arena-entry-grid .arena-random-option{text-align:left;border-radius:8px;justify-content:flex-start;width:100%;min-height:56px;margin-top:14px;padding:16px 18px;display:flex}.arena-random-option:hover:not(:disabled){background:#e1ead6;border-color:#879c7d}.arena-random-option:active:not(:disabled){transition-duration:90ms;transform:scale(.985);box-shadow:0 1px 2px #18382c0a}.arena-random-option:focus-visible{outline-offset:3px;outline:3px solid #e99855}.arena-random-option:disabled{opacity:.55;box-shadow:none}@media (prefers-reduced-motion:reduce){.arena-random-option{transition:none}}.arena-entry-grid .arena-entry-button{letter-spacing:0;text-align:left;cursor:pointer;-webkit-tap-highlight-color:transparent;border:1px solid #0000;border-radius:14px;justify-content:space-between;align-items:center;width:100%;min-height:56px;padding:16px 22px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:16px;font-weight:600;line-height:1.5;transition:transform .18s cubic-bezier(.2,.8,.2,1),box-shadow .18s,filter .18s;display:flex;transform:translateY(0)scale(1);box-shadow:0 2px 7px #18382c17,inset 0 1px #ffffff1f}.arena-entry-grid .arena-entry-primary{color:#fff;background:linear-gradient(#245647,#1b4639)}.arena-entry-grid .arena-entry-random{color:#315442;background:#f2f5f1;border-color:#dce4dc;margin-top:12px;box-shadow:0 1px 3px #18382c0a}.arena-entry-grid .arena-entry-library{color:#fff;background:linear-gradient(#ed8c55,#e57b43);box-shadow:0 2px 7px #a3592b1f,inset 0 1px #ffffff2e}@media (hover:hover){.arena-entry-grid .arena-entry-button:hover:not(:disabled){filter:brightness(1.035);transform:translateY(-1px);box-shadow:0 4px 12px #18382c1f}}.arena-entry-grid .arena-entry-button:active:not(:disabled){filter:brightness(.97);transition-duration:90ms;transform:translateY(0)scale(.985);box-shadow:0 1px 3px #18382c12}.arena-entry-grid .arena-entry-button:focus-visible{outline-offset:4px;outline:3px solid #7aa997}.arena-entry-grid .arena-entry-button:disabled{opacity:.55;cursor:wait;box-shadow:none;transform:none}@media (prefers-reduced-motion:reduce){.arena-entry-grid .arena-entry-button{transition:none}.arena-entry-grid .arena-entry-button:hover:not(:disabled),.arena-entry-grid .arena-entry-button:active:not(:disabled){transform:none}}@media (hover:hover) and (pointer:fine){.arena-random-option:hover:not(:active):not(:disabled){transform:translateY(-1px);box-shadow:0 3px 8px #18382c14}}@media (prefers-reduced-motion:reduce){.arena-random-option:is(:hover,:active){transform:none}}.home-knowledge-map{margin:0 0 28px}.home-knowledge-map.is-open{background:#fffaf1;border:1px solid #d8cab0;border-radius:24px;overflow:hidden}.home-knowledge-entry{color:#153328;text-align:left;cursor:pointer;background:#fffaf1;border:1px solid #d8cab0;border-radius:16px;grid-template-columns:48px minmax(0,1fr) auto;align-items:center;gap:16px;width:100%;padding:18px 22px;transition:all .18s;display:grid}.home-knowledge-entry:hover{background:#edf5e4;border-color:#47755f;transform:translateY(-1px);box-shadow:0 10px 26px #15332810}.home-knowledge-icon{color:#c8ef61;background:#153f33;border-radius:13px;place-items:center;width:46px;height:46px;font-size:22px;font-weight:900;display:grid}.home-knowledge-entry>span:nth-child(2){flex-direction:column;gap:3px;min-width:0;display:flex}.home-knowledge-entry small{color:#9a5939;letter-spacing:.14em;font-size:14px;font-weight:900}.home-knowledge-entry b{font-size:18px}.home-knowledge-entry em{color:#6d786f;font-size:14px;font-style:normal}.home-knowledge-entry strong{color:#35664f;font-size:14px}.home-knowledge-toolbar{padding:16px 24px 0}.home-knowledge-toolbar button{color:#47755f;cursor:pointer;background:0 0;border:0;font-weight:900}.home-knowledge-map .knowledge-map{padding:18px 24px 28px}.home-knowledge-map .knowledge-map-hero{border-radius:18px;padding:34px}.home-knowledge-map .knowledge-map-hero h1{font-size:clamp(30px,3.2vw,48px)}.knowledge-map{color:#153328;max-width:1500px;margin:0 auto;padding:34px 38px 80px}.knowledge-map-actions{margin-bottom:22px}.knowledge-map-hero{color:#fff;background:#153f33;border-radius:28px;grid-template-columns:minmax(0,1fr) 190px;align-items:end;gap:36px;padding:46px;display:grid}.knowledge-map-hero>div>span{letter-spacing:.12em;color:#c8ef61;font-size:14px;font-weight:900}.knowledge-map-hero h1{letter-spacing:-.04em;max-width:920px;margin:15px 0 12px;font-size:clamp(34px,4vw,64px);line-height:1.08}.knowledge-map-hero p{color:#d4e1db;max-width:900px;margin:0;font-size:16px;line-height:1.8}.knowledge-map-count{background:#ffffff0a;border:1px solid #ffffff2b;border-radius:20px;flex-direction:column;padding:24px;display:flex}.knowledge-map-count strong{color:#c8ef61;font-size:54px}.knowledge-map-count span{color:#d4e1db}.knowledge-search{z-index:4;background:#fffdf8;border:1px solid #d9ccb3;border-radius:18px;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:18px;margin:24px 0;padding:16px 20px;display:grid;position:sticky;top:12px;box-shadow:0 12px 35px #15332812}.knowledge-search span{font-weight:900}.knowledge-search input{width:100%;font:inherit;color:#153328;background:0 0;border:0;outline:0}.knowledge-search kbd{color:#35664f;background:#edf5e4;border-radius:10px;padding:7px 11px;font:700 14px/1 sans-serif}.knowledge-tree{gap:16px;display:grid}.knowledge-course{background:#fffaf1;border:1px solid #d8cab0;border-radius:22px;overflow:hidden}.knowledge-course>summary{cursor:pointer;grid-template-columns:52px 1fr auto;align-items:center;gap:16px;padding:22px 26px;list-style:none;display:grid}.knowledge-course>summary::-webkit-details-marker{display:none}.knowledge-course>summary>i{color:#7a654f;background:#efe6d5;border-radius:15px;place-items:center;width:48px;height:48px;font-style:normal;font-weight:900;display:grid}.knowledge-course>summary div{flex-direction:column;gap:4px;display:flex}.knowledge-course>summary b{font-size:23px}.knowledge-course>summary span,.knowledge-course>summary em{color:#6d786f;font-size:14px;font-style:normal}.knowledge-course[open]>summary{background:#e8f2dc}.knowledge-course[open]>summary>i{color:#fff;background:#35664f}.knowledge-branches{gap:20px;padding:24px 28px 30px 52px;display:grid;position:relative}.knowledge-branches:before{content:"";border-left:2px solid #bdd1b2;position:absolute;top:0;bottom:32px;left:31px}.knowledge-branch{background:#fff;border:1px solid #dfd3bd;border-radius:18px;padding:20px;position:relative}.knowledge-branch:before{content:"";border-top:2px solid #bdd1b2;width:20px;position:absolute;top:38px;left:-22px}.knowledge-branch>header{margin-bottom:14px}.knowledge-branch>header span{letter-spacing:.12em;color:#9a5939;font-size:14px;font-weight:900}.knowledge-branch h2{margin:4px 0 0;font-size:20px}.knowledge-branch>div{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.knowledge-branch button{text-align:left;color:#28483c;cursor:pointer;background:#fcfaf5;border:1px solid #e2d8c6;border-radius:14px;grid-template-columns:38px minmax(0,1fr) auto;align-items:center;gap:12px;padding:15px;display:grid}.knowledge-branch button:hover{background:#edf5e4;border-color:#47755f;transform:translateY(-1px)}.knowledge-branch button>i{color:#9a5939;font-style:normal;font-weight:900}.knowledge-branch button>span{flex-direction:column;gap:4px;min-width:0;display:flex}.knowledge-branch button b{font-size:16px}.knowledge-branch button small{color:#738078;line-height:1.45}.knowledge-branch button em{white-space:nowrap;color:#47755f;font-size:14px;font-style:normal;font-weight:900}.knowledge-empty{text-align:center;border:1px dashed #cdbd9f;border-radius:22px;padding:80px 20px}.knowledge-empty b{font-size:22px}.knowledge-empty p{color:#6d786f}@media (max-width:820px){.knowledge-map{padding:22px 16px 60px}.knowledge-map-hero{grid-template-columns:1fr;padding:30px 24px}.knowledge-map-count{display:none}.knowledge-search{grid-template-columns:1fr;gap:8px;top:6px}.knowledge-search kbd{display:none}.knowledge-course>summary{grid-template-columns:44px 1fr;padding:18px}.knowledge-course>summary>em{display:none}.knowledge-branches{padding:18px 16px}.knowledge-branches:before,.knowledge-branch:before{display:none}.knowledge-branch>div{grid-template-columns:1fr}.knowledge-branch button{grid-template-columns:32px 1fr}.knowledge-branch button em{display:none}.home-knowledge-entry{grid-template-columns:42px 1fr;padding:15px}.home-knowledge-entry>strong{grid-column:2}.home-knowledge-icon{width:40px;height:40px}.home-knowledge-map .knowledge-map{padding:14px}.home-knowledge-map .knowledge-map-hero{padding:26px 20px}}.formula-appendix{color:#153328;margin:0 0 28px}.formula-appendix-shell{background:#fffaf1;border:1px solid #d8cab0;border-radius:16px;overflow:hidden}.formula-appendix-shell>summary{cursor:pointer;grid-template-columns:48px minmax(0,1fr) auto;align-items:center;gap:16px;padding:18px 22px;list-style:none;transition:background-color .18s;display:grid}.formula-appendix-shell>summary::-webkit-details-marker{display:none}.formula-module>summary::-webkit-details-marker{display:none}.formula-appendix-shell>summary:hover{background:#f8efdf}.formula-appendix-icon{color:#fff5df;background:#9a5939;border-radius:13px;place-items:center;width:46px;height:46px;font:italic 800 17px Georgia,serif;display:grid}.formula-appendix-title{flex-direction:column;gap:3px;min-width:0;display:flex}.formula-appendix-title small{color:#9a5939;letter-spacing:.14em;font-size:14px;font-weight:900}.formula-appendix-title b{font-size:18px}.formula-appendix-title em{color:#6d786f;font-size:14px;font-style:normal}.formula-appendix-shell>summary>strong{color:#7c4d34;font-size:14px}.formula-appendix-shell>summary>strong i{margin-left:6px;font-style:normal;transition:transform .18s;display:inline-block}.formula-appendix-shell[open]{border-radius:24px}.formula-appendix-shell[open]>summary{background:#f8efdf;border-bottom:1px solid #d8cab0}.formula-appendix-shell[open]>summary>strong i{transform:rotate(180deg)}.formula-appendix-body{padding:24px}.formula-appendix-body>header{color:#fff;background:#153f33;border-radius:18px;grid-template-columns:minmax(0,1.4fr) minmax(260px,.6fr);align-items:end;gap:30px;padding:30px 34px;display:grid}.formula-appendix-body>header span{color:#c8ef61;letter-spacing:.1em;font-size:14px;font-weight:900}.formula-appendix-body>header h2{letter-spacing:-.03em;max-width:700px;margin:9px 0 0;font-size:clamp(24px,3vw,38px);line-height:1.25}.formula-appendix-body>header p{color:#d4e1db;margin:0;font-size:16px;line-height:1.75}.formula-group-list{gap:18px;margin-top:20px;display:grid}.formula-group{background:#fff;border:1px solid #dfd3bd;border-radius:18px;overflow:hidden}.formula-group-heading{background:#f4eddf;grid-template-columns:46px minmax(0,1fr) auto;align-items:center;gap:14px;padding:18px 20px;display:grid}.formula-group-heading>i{color:#76543d;background:#e4d2b7;border-radius:12px 12px 12px 3px;place-items:center;width:42px;height:42px;font-style:normal;font-weight:900;display:grid}.formula-group-heading h3{margin:0 0 3px;font-size:18px}.formula-group-heading p,.formula-group-heading>span{color:#6d786f;margin:0;font-size:16px}.formula-module-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;padding:16px;display:grid}.formula-module{background:#fcfaf5;border:1px solid #e2d8c6;border-radius:14px;align-self:start}.formula-module>summary{cursor:pointer;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:5px 16px;padding:16px;list-style:none;display:grid}.formula-module>summary b{font-size:16px}.formula-module>summary span{color:#738078;text-overflow:ellipsis;white-space:nowrap;font-size:14px;line-height:1.5;overflow:hidden}.formula-module>summary i{color:#35664f;background:#edf5e4;border-radius:50%;grid-area:1/2/3;place-items:center;width:28px;height:28px;font-size:19px;font-style:normal;font-weight:400;transition:transform .18s,background-color .18s,color .18s;display:grid}.formula-module[open]{background:#fff;border-color:#adc49f}.formula-module[open]>summary{border-bottom:1px solid #e2d8c6}.formula-module[open]>summary span{white-space:normal}.formula-module[open]>summary i{color:#fff;background:#35664f;transform:rotate(45deg)}.formula-module-content{padding:16px}.formula-module-content ul{gap:8px;margin:0;padding:0;list-style:none;display:grid}.formula-module-content li{color:#24483a;background:#f1f5ea;border-radius:9px;padding:10px 12px;font-family:Georgia,Times New Roman,PingFang SC,serif;font-size:16px;line-height:1.55}.formula-module-content p{color:#65736a;margin:14px 0 0;font-size:16px;line-height:1.7}.formula-module-content p strong{color:#9a5939;letter-spacing:.08em;margin-bottom:2px;font-size:16px;display:block}@media (max-width:820px){.formula-appendix-shell>summary{grid-template-columns:42px 1fr;padding:15px}.formula-appendix-shell>summary>strong{grid-column:2}.formula-appendix-icon{width:40px;height:40px}.formula-appendix-body{padding:14px}.formula-appendix-body>header{grid-template-columns:1fr;gap:14px;padding:25px 20px}.formula-group-heading{grid-template-columns:42px 1fr;padding:15px}.formula-group-heading>span{grid-column:2}.formula-module-list{grid-template-columns:1fr;padding:12px}.formula-module>summary span{white-space:normal}}.course-learning-map{color:#283e30;background:#fbfcf8;border:1px solid #dce3d8;border-radius:18px;margin:0 0 28px;overflow:hidden}.course-learning-map>summary{cursor:pointer;touch-action:manipulation;justify-content:space-between;align-items:center;gap:16px;padding:20px 24px;list-style:none;display:flex}.course-learning-map>summary::-webkit-details-marker{display:none}.course-learning-map>summary:focus-visible{outline-offset:-4px;border-radius:16px;outline:3px solid #759b80}.course-learning-map>summary>span:first-child{gap:6px;display:grid}.course-map-eyebrow{color:#717f70;font-size:13px;line-height:1.6}.course-learning-map>summary b{text-wrap:balance;font-size:21px;font-weight:750;line-height:1.5}.course-map-toggle{color:#526a56;flex-shrink:0;align-items:center;gap:7px;font-size:14px;display:flex}.course-map-toggle i{font-size:18px;font-style:normal;line-height:1}.course-learning-map[open] .course-map-toggle i{transform:rotate(180deg)}.course-map-body{padding:0 24px 22px}.course-map-intro{color:#697866;border-top:1px solid #e5e9e0;padding-top:16px;font-size:15px;line-height:1.8;margin:0 0 20px!important}.course-map-tree{grid-template-columns:minmax(150px,.55fr) minmax(0,2fr);align-items:center;gap:36px;display:grid}.course-map-root{text-align:center;background:#eaf1e5;border:1px solid #b9cdb9;border-radius:13px;padding:24px 18px;position:relative}.course-map-root:after{content:"";border-top:1px solid #bacbb5;width:19px;position:absolute;top:50%;left:100%}.course-map-root>span{color:#677d63;font-size:14px}.course-map-root h2{text-wrap:balance;font-weight:750;margin:8px 0!important;font-size:24px!important;line-height:1.6!important}.course-map-root p{color:#677d63;font-size:14px;line-height:1.8;margin:0!important}.course-map-branches{gap:14px;margin:0;padding:0;list-style:none;display:grid;position:relative}.course-map-branches:before{content:"";background:#bacbb5;width:1px;position:absolute;top:0;bottom:0;left:-18px}.course-map-branch{background:#fffefa;border:1px solid #e0e6db;border-radius:12px;padding:16px;position:relative}.course-map-branch:before{content:"";border-top:1px solid #bacbb5;width:18px;position:absolute;top:30px;left:-19px}.course-map-branch-heading{align-items:center;gap:10px;display:flex}.course-map-branch-heading>span{color:#60745a;font-variant-numeric:tabular-nums;background:#edf2e8;border-radius:7px;flex:0 0 27px;place-items:center;min-height:27px;font-size:12px;display:grid}.course-map-branch h3{color:#354e38;font-weight:750;line-height:1.65;margin:0!important;font-size:17px!important}.course-map-relation{color:#245b48;overflow-wrap:anywhere;font-size:16px;font-weight:650;line-height:1.75;margin:10px 0 0!important}.course-map-meaning{color:#6b7868;font-size:14px;line-height:1.8;margin:8px 0 0!important}.course-map-leaves{flex-wrap:wrap;gap:8px;margin:12px 0 0;padding:0;list-style:none;display:flex}.course-map-leaves li{min-width:0;max-width:100%}.course-map-leaves button{color:#425641;max-width:100%;font:inherit;text-align:left;cursor:pointer;background:#f7f8f3;border:1px solid #e0e5dc;border-radius:8px;align-items:flex-start;gap:7px;padding:8px 10px;font-size:14px;line-height:1.65;display:flex}.course-map-chapter-number{color:#819178;font-variant-numeric:tabular-nums;flex-shrink:0;font-size:12px;line-height:1.9}.course-map-leaves button[aria-current=step]{color:#245b48;background:#eaf2e3;border-color:#9fb797;box-shadow:inset 0 0 0 1px #9fb797}.course-map-complete{color:#4c7855}:is(.course-map-leaves button:focus-visible,.course-map-footer button:focus-visible){outline-offset:3px;outline:3px solid #759b80}@media (hover:hover) and (pointer:fine){.course-map-leaves button:hover{background:#edf3e6;border-color:#b4c6a9}}.course-map-footer{border-top:1px solid #e5e9e0;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-top:20px;padding-top:16px;display:flex}.course-map-footer p{color:#71806f;font-size:14px;line-height:1.8;margin:0!important}.course-map-footer button{color:#355a3c;font:inherit;cursor:pointer;white-space:nowrap;background:#eaf2e3;border:1px solid #bacdb1;border-radius:9px;padding:10px 15px;font-size:14px;font-weight:650}@media (max-width:680px){.course-learning-map>summary{padding:16px}.course-learning-map>summary b{font-size:19px}.course-map-body{padding:0 16px 16px}.course-map-tree{grid-template-columns:minmax(0,1fr);gap:22px}.course-map-root{text-align:left;padding:16px}.course-map-root h2{font-size:22px!important}.course-map-root p br{display:none}.course-map-root:after{border:0;border-left:1px solid #bacbb5;width:0;height:22px;top:100%;left:18px}.course-map-branches{margin-left:18px;padding-left:16px}.course-map-branches:before{left:0}.course-map-branch:before{width:16px;left:-17px}.course-map-branch{padding:13px}.course-map-leaves{gap:7px}.course-map-leaves li{width:100%}.course-map-leaves button{width:100%;font-size:14px}.course-map-intro{font-size:14px}.course-map-footer button{width:100%}}html[data-font-size=large] .course-map-relation{font-size:18px}html[data-font-size=xlarge] .course-map-relation{font-size:20px}html[data-font-size=large] :is(.course-map-meaning,.course-map-leaves button){font-size:16px}html[data-font-size=xlarge] :is(.course-map-meaning,.course-map-leaves button){font-size:18px}
