.math-mind-map{--lb-paper:var(--lightningcss-light,#fff9f0)var(--lightningcss-dark,#24221f);--lb-panel:var(--lightningcss-light,#fffdf9)var(--lightningcss-dark,#302c27);--lb-ink:var(--lightningcss-light,#292a27)var(--lightningcss-dark,#faf3e8);--lb-muted:var(--lightningcss-light,#6d655e)var(--lightningcss-dark,#cbc0b0);--lb-terra:var(--lightningcss-light,#a3432b)var(--lightningcss-dark,#ffc2a6);--lb-terra-fill:var(--lightningcss-light,#f6e2d5)var(--lightningcss-dark,#503628);--lb-line:var(--lightningcss-light,#d8ccbd)var(--lightningcss-dark,#62584c);--lb-warm:var(--lightningcss-light,#efe8db)var(--lightningcss-dark,#3e382f);--lb-mint:var(--lightningcss-light,#dcebe2)var(--lightningcss-dark,#264338);--lb-mint-ink:var(--lightningcss-light,#235e43)var(--lightningcss-dark,#c3f2d7);font-family:var(--font-body),ui-sans-serif,system-ui,sans-serif;color:var(--lb-ink);background:var(--lb-paper);box-sizing:border-box;border-radius:24px;max-width:none;margin:30px 0;padding:24px;overflow:clip;container:pythagoras/inline-size}.math-mind-map *{box-sizing:border-box}.math-mind-map .lb-top{justify-content:space-between;align-items:center;gap:12px;display:flex}.math-mind-map .lb-brand{letter-spacing:-.6px;font-size:19px;font-weight:750}.math-mind-map .lb-brand>span{color:var(--lb-terra);margin-left:3px}.math-mind-map .lb-subject{letter-spacing:1px;color:var(--lb-muted);font-size:12px;font-weight:600}.math-mind-map .lb-rule{z-index:5;background:var(--lb-terra-fill);border-left:5px solid var(--lb-terra);border-radius:16px;margin-top:18px;padding:17px 20px;position:sticky;top:94px}.math-mind-map .lb-rule-label{letter-spacing:1.2px;color:var(--lb-terra);margin-bottom:7px;font-size:12px;font-weight:750;display:block}.math-mind-map .lb-rule p{color:var(--lb-ink);margin:0 0 7px;font-size:16px;line-height:1.5}.math-mind-map .lb-rule-equation{color:var(--lb-terra);font-size:26px;font-weight:750;line-height:1.5}.math-mind-map .lb-rule-note{color:var(--lb-ink);margin-top:4px;font-size:14px;line-height:1.45;display:block}.math-mind-map .lb-map{grid-template-rows:90px 90px;grid-template-columns:minmax(0,1fr) 170px minmax(0,1fr);align-items:center;gap:24px 26px;margin:26px 0;display:grid;position:relative}.math-mind-map .lb-links{pointer-events:none;width:100%;height:100%;position:absolute;inset:0;overflow:visible}.math-mind-map .lb-links path{fill:none;stroke:var(--lb-line);stroke-width:1.5px;transition:stroke .25s}.math-mind-map .lb-links path.lb-current{stroke:var(--lb-terra);stroke-width:2px}.math-mind-map .lb-hub{background:var(--lb-terra-fill);text-align:center;width:170px;height:170px;box-shadow:0 0 0 7px var(--lb-paper);border-radius:50%;flex-direction:column;grid-area:1/2/3/3;justify-content:center;align-items:center;display:flex;position:relative}.math-mind-map .lb-hub-kicker{letter-spacing:1.8px;color:var(--lb-terra);font-size:11px;font-weight:650}.math-mind-map h2{letter-spacing:-.6px;color:var(--lb-ink);margin:8px 0;font-size:25px;font-weight:720;line-height:1.2}.math-mind-map .lb-hub-footer{color:var(--lb-muted);font-size:12px}.math-mind-map .lb-node{text-align:left;background:var(--lb-panel);color:var(--lb-ink);border:1px solid var(--lb-line);min-width:0;font:inherit;border-radius:16px;align-items:center;gap:10px;min-height:76px;padding:14px 12px;font-size:15px;font-weight:650;transition:background .2s,transform .2s,border-color .2s;display:flex;position:relative}.math-mind-map .lb-node-0{grid-area:1/1}.math-mind-map .lb-node-1{grid-area:1/3}.math-mind-map .lb-node-2{grid-area:2/1}.math-mind-map .lb-node-3{grid-area:2/3}.math-mind-map .lb-node[aria-pressed=true]{border-color:var(--lb-terra);background:var(--lb-terra-fill);transform:translateY(-2px)}.math-mind-map .lb-node small{color:var(--lb-muted);margin-top:4px;font-size:12px;font-weight:400;display:block}.math-mind-map .lb-number{color:var(--lb-terra);font-variant-numeric:tabular-nums;align-self:flex-start;margin-top:3px;font-size:12px}.math-mind-map .lb-detail{background:var(--lb-panel);border-radius:18px;padding:20px}.math-mind-map .lb-detail-head{justify-content:space-between;align-items:center;gap:16px;display:flex}.math-mind-map h3{letter-spacing:-.35px;color:var(--lb-ink);margin:0;font-size:19px;font-weight:650;line-height:1.35}.math-mind-map .lb-detail-mark{background:var(--lb-mint);width:34px;height:34px;color:var(--lb-mint-ink);border-radius:50%;flex:none;place-items:center;display:grid}.math-mind-map .lb-diagram-wrap{width:100%;height:212px;margin:4px 0 0}.math-mind-map .lb-diagram{width:100%;height:100%;display:block;overflow:visible}.math-mind-map .lb-diagram .lb-base{fill:var(--lb-warm);fill-opacity:.4;stroke:var(--lb-line);stroke-width:2px;stroke-linejoin:round}.math-mind-map .lb-diagram .lb-angle{fill:none;stroke:var(--lb-muted);stroke-width:1.5px}.math-mind-map .lb-diagram .lb-route{fill:none;stroke:var(--lb-terra);stroke-width:5px;stroke-linecap:round;stroke-linejoin:round}.math-mind-map .lb-diagram .lb-edge{fill:none;stroke:var(--lb-line);stroke-width:2.5px}.math-mind-map .lb-diagram text{fill:var(--lb-ink);paint-order:stroke;stroke:var(--lb-panel);stroke-width:7px;stroke-linejoin:round;font-family:inherit;font-size:16px;font-weight:550}.math-mind-map .lb-diagram text.lb-vertex{fill:var(--lb-muted);font-size:13px;font-weight:450}.math-mind-map .lb-diagram text.lb-distance{fill:var(--lb-terra);font-weight:750}.math-mind-map .lb-action-row{flex-wrap:wrap;justify-content:center;gap:10px;min-height:44px;display:flex}.math-mind-map .lb-action{font:inherit;color:var(--lb-paper);background:var(--lb-ink);border:1px solid var(--lb-ink);border-radius:11px;min-height:44px;padding:10px 17px;font-size:14px;font-weight:650;transition:transform .15s}.math-mind-map .lb-choice{background:var(--lb-panel);color:var(--lb-ink);border-color:var(--lb-line);min-width:74px}.math-mind-map .lb-choice[aria-pressed=true]{background:var(--lb-terra-fill);border-color:var(--lb-terra)}.math-mind-map .lb-choice[data-correct=true]{background:var(--lb-mint);border-color:var(--lb-mint-ink);color:var(--lb-mint-ink)}.math-mind-map .lb-feedback{text-align:center;color:var(--lb-muted);place-items:center;min-height:39px;margin-top:12px;font-size:13px;line-height:1.5;display:grid}.math-mind-map .lb-feedback.lb-success{color:var(--lb-mint-ink)}.math-mind-map [hidden]{display:none!important}.math-mind-map .lb-lesson{border-bottom:1px solid var(--lb-line);margin:0 0 20px;padding:0 0 18px}.math-mind-map .lb-step-count{color:var(--lb-terra);margin-bottom:9px;font-size:13px;font-weight:650;display:block}.math-mind-map .lb-lesson h4{margin:0 0 9px;font-size:18px;font-weight:650;line-height:1.35}.math-mind-map .lb-lesson p{color:var(--lb-ink);margin:0 0 14px;font-size:16px;line-height:1.55}.math-mind-map .lb-formula{color:var(--lb-terra);overflow-wrap:anywhere;font-size:20px;font-weight:650;line-height:1.6}.math-mind-map .lb-formula small{color:var(--lb-muted);font-size:15px;font-weight:450}.math-mind-map .lb-action:disabled{opacity:.45;cursor:default;transform:none}.math-mind-map .lb-diagram .lb-angle-emphasis{stroke:var(--lb-terra);stroke-width:3px}.math-mind-map .lb-feedback:empty,.math-mind-map #lb-actions:empty{display:none}.math-mind-map .lb-practice p{margin:0 0 15px;font-size:16px;line-height:1.55}.math-mind-map .lb-practice h4{margin:0 0 12px;font-size:19px;line-height:1.4}.math-mind-map .lb-practice label{margin-bottom:10px;font-size:16px;font-weight:600;display:block}.math-mind-map .lb-equation-input{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:14px;font-size:23px;font-weight:650;display:flex}.math-mind-map #lb-answer{font:inherit;border:1px solid var(--lb-line);width:115px;max-width:100%;min-height:48px;color:var(--lb-ink);background:var(--lb-paper);text-align:center;border-radius:10px;padding:8px 12px;font-size:22px}.math-mind-map #lb-answer[aria-invalid=true]{border-color:var(--lb-terra);border-width:2px}.math-mind-map #lb-answer[readonly]{background:var(--lb-mint);color:var(--lb-mint-ink)}.math-mind-map .lb-practice-error,.math-mind-map .lb-practice-success{margin:10px 0 16px;font-size:15px;line-height:1.5}.math-mind-map .lb-practice-error{color:var(--lb-terra)}.math-mind-map .lb-practice-success{color:var(--lb-mint-ink)}.math-mind-map .lb-practice-error:empty,.math-mind-map .lb-practice-success:empty{display:none}.math-mind-map .lb-practice-hint{color:var(--lb-muted)}.math-mind-map .lb-help-link{min-height:44px;font:inherit;color:var(--lb-terra);text-underline-offset:4px;text-align:center;background:0 0;border:0;margin:17px auto 0;padding:10px 2px;font-size:14px;text-decoration:underline;display:block}.math-mind-map .lb-calculation-recap{margin:12px 0 20px;padding-left:22px;font-size:16px;line-height:1.7}.math-mind-map .lb-learning-layout{grid-template-columns:minmax(0,1fr) 226px;align-items:start;gap:22px;display:grid}.math-mind-map .lb-learning-content{min-width:0}.math-mind-map .lb-calculator{background:var(--lb-paper);border-radius:16px;min-width:0;padding:14px}.math-mind-map .lb-calculator h4{margin:0 0 12px;font-size:18px;font-weight:650;line-height:1.3}.math-mind-map .lb-calculator label{color:var(--lb-muted);margin:0 0 5px;font-size:13px;display:block}.math-mind-map #lb-calc-expression{border:1px solid var(--lb-line);background:var(--lb-panel);width:100%;min-width:0;min-height:42px;color:var(--lb-ink);font:inherit;text-align:right;border-radius:8px;padding:9px;font-size:16px}.math-mind-map .lb-calc-result-row{flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:8px;margin:10px 0 13px;display:flex}.math-mind-map .lb-calc-result-row>span{color:var(--lb-muted);font-size:12px}.math-mind-map #lb-calc-result{overflow-wrap:anywhere;max-width:100%;color:var(--lb-ink);font-size:23px;font-weight:700}.math-mind-map .lb-calc-keys{grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;display:grid}.math-mind-map .lb-calc-keys button{font:inherit;border:1px solid var(--lb-line);background:var(--lb-panel);min-width:0;min-height:44px;color:var(--lb-ink);border-radius:8px;padding:6px 3px;font-size:17px;font-weight:600}.math-mind-map .lb-calc-keys .lb-calc-function{background:var(--lb-terra-fill);color:var(--lb-terra);border-color:#0000}.math-mind-map .lb-calc-keys .lb-calc-equals{background:var(--lb-ink);color:var(--lb-paper);border-color:#0000}.math-mind-map .lb-calc-use{width:100%;margin-top:12px;padding:10px 8px;font-size:14px;display:block}.math-mind-map .lb-calc-error,.math-mind-map .lb-calc-transfer{overflow-wrap:anywhere;margin:7px 0 10px;font-size:13px;line-height:1.5}.math-mind-map .lb-calc-error{color:var(--lb-terra)}.math-mind-map .lb-calc-transfer{color:var(--lb-mint-ink)}.math-mind-map .lb-calc-error:empty,.math-mind-map .lb-calc-transfer:empty{display:none}@container pythagoras (width<=650px){.math-mind-map .lb-learning-layout{grid-template-columns:minmax(0,1fr)}.math-mind-map .lb-calculator{justify-self:center;width:100%;max-width:360px}.math-mind-map .lb-rule{padding:14px}}@media (hover:hover){.math-mind-map .lb-node:hover{transform:translateY(-3px)}.math-mind-map .lb-action:hover{transform:translateY(-1px)}}@container pythagoras (width<=590px){.math-mind-map .lb-map{grid-template-rows:128px auto auto;grid-template-columns:1fr 1fr;gap:14px 16px;margin:18px 0}.math-mind-map .lb-hub{border-radius:30px;grid-area:1/1/2/3;justify-self:center;width:156px;height:128px}.math-mind-map .lb-node-0{grid-area:2/1}.math-mind-map .lb-node-1{grid-area:2/2}.math-mind-map .lb-node-2{grid-area:3/1}.math-mind-map .lb-node-3{grid-area:3/2}.math-mind-map .lb-node{gap:7px;padding:12px 10px}.math-mind-map .lb-detail{padding:16px}}@container pythagoras (width<=350px){.math-mind-map .lb-brand{font-size:17px}.math-mind-map .lb-subject{font-size:11px}.math-mind-map .lb-node{font-size:14px}.math-mind-map .lb-node small{font-size:11px}.math-mind-map .lb-detail{padding:14px}.math-mind-map h3{font-size:17px}.math-mind-map .lb-action{padding:10px 13px}}@media (prefers-reduced-motion:reduce){.math-mind-map *{transition:none!important;animation:none!important}}.math-mind-map{border:1px solid var(--lb-line);scroll-margin-top:110px}.math-mind-map h2,.math-mind-map h3,.math-mind-map h4{font-family:var(--font-display),system-ui,sans-serif}.math-mind-map .lb-intro{color:var(--lb-muted);margin:14px 0 0;font-size:15px;line-height:1.5}.math-mind-map .lb-rule{box-shadow:0 5px 0 var(--lb-paper)}.math-mind-map .lb-links-mobile{display:none}.math-mind-map .lb-links path{vector-effect:non-scaling-stroke}.math-mind-map .lb-detail-mark svg{width:18px;height:18px}.math-mind-map .lb-formula small{margin-top:6px;display:block}.math-mind-map .lb-calculation-recap{list-style:decimal}:is(.math-mind-map button:focus-visible,.math-mind-map input:focus-visible,.math-mind-map a:focus-visible){outline:3px solid var(--lb-terra);outline-offset:4px}.math-mind-map button{text-transform:none;letter-spacing:normal;cursor:pointer}.math-mind-map button:disabled{cursor:default}.math-mind-map .lb-intro+.lb-action-row{margin-top:18px}.math-mind-map :is(button,input,a){scroll-margin-top:330px;scroll-margin-bottom:24px}.math-mind-map .lb-rule-note{font-size:13px}.math-mind-map .lb-diagram .lb-route{animation:.65s ease-out lb-route-draw}.math-mind-map .lb-detail-head{animation:.23s ease-out lb-detail-enter}@keyframes lb-route-draw{0%{stroke-dashoffset:1px}to{stroke-dashoffset:0}}@keyframes lb-detail-enter{0%{transform:translateY(7px)}to{transform:translateY(0)}}@container pythagoras (width<=590px){.math-mind-map .lb-links-desktop{display:none}.math-mind-map .lb-links-mobile{display:block}.math-mind-map .lb-rule p{font-size:14px}.math-mind-map .lb-rule-label{margin-bottom:4px;font-size:11px}.math-mind-map .lb-rule-equation{font-size:23px}}@media (max-width:850px){.math-mind-map .lb-rule{top:84px}}@media (max-width:700px){.math-mind-map{padding:16px}.math-mind-map .lb-rule{padding:12px;top:79px}.math-mind-map .lb-rule-note{font-size:12px}}@media print{.math-mind-map .lb-rule{position:static}.math-mind-map .lb-map,.math-mind-map .lb-detail{display:none}}