.q-index,.q-page{--q-ink:#183b53;--q-blue:#176782;--q-border:#d8d3c4;--q-soft:#eee7d5;color:var(--q-ink)}.q-index-intro{position:relative;max-width:790px}.q-index-intro h1{font-size:76px;line-height:1;margin:20px 0 22px}.q-index-intro>p{font-size:20px;line-height:1.6;max-width:610px}.q-pencil-note{display:block;font:25px/1.3 Patrick,cursive;color:#6c887e;margin:20px 0;transform:rotate(-3deg);transform-origin:left center}.q-find{display:flex;align-items:end;justify-content:space-between;gap:30px;margin:44px 0 18px}.q-find>label{font-size:13px;font-weight:600;flex:1;max-width:480px}.q-find input{margin-top:9px;min-height:49px;background:#fffcf4;border-color:#aebcb8}.q-filter{display:flex;flex-wrap:wrap;gap:7px;padding:0;border:0;margin:0}.q-filter legend{font-size:11px;color:#697e84;margin-bottom:10px}.q-filter button,.q-force-modes button{font:inherit;font-size:12px;padding:9px 13px;border:1px solid #bdc9c5;border-radius:22px;background:#fffcf5;color:#244a5a;min-height:39px}.q-filter button[aria-pressed=true],.q-force-modes button[aria-pressed=true]{background:#245c70;border-color:#245c70;color:white}.q-search-status{font-size:12px;margin-bottom:18px}.q-card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.q-card{position:relative;background:#fffcf5;border:1px solid #dcd3bf;border-radius:5px 14px 7px 9px;padding:28px 25px;display:flex;flex-direction:column;box-shadow:0 5px 12px #203c4a08}.q-card:before{content:'';position:absolute;left:25px;top:0;width:48px;height:4px;background:#e7bc49}.q-card:nth-child(2):before{background:#82adbc}.q-card:nth-child(3):before{background:#90a389}.q-card-kind{font-size:10px;font-weight:700;letter-spacing:1.3px;color:#657f83;margin:3px 0 17px}.q-card h2{font-family:Patrick,cursive;font-weight:400;font-size:32px;letter-spacing:0;line-height:1.1;margin:0 0 18px}.q-card h2 a{text-decoration:none;display:block}.q-card h2 a>span{font-size:22px;white-space:nowrap;margin-left:8px;color:#33819a}.q-card p{font-size:14px;line-height:1.7;margin:0 0 25px}.q-card-link{margin-top:auto;font-size:12px;font-weight:600;color:#176782;text-underline-offset:5px}.q-bench-note{display:flex;align-items:center;gap:25px;padding:30px;background:#e8eddf;border-radius:8px;margin:35px 0 0}.q-bench-note>span{font-size:49px;color:#6b8b72}.q-bench-note h2{font-size:29px;margin:0 0 8px}.q-bench-note p{font-size:14px;max-width:580px;line-height:1.7}.q-bench-note>a{margin-left:auto;flex-shrink:0}.q-empty{padding:30px;background:#f2eedf;border:1px dashed #bfc7b8;border-radius:8px}.q-empty h2{font-size:32px}.q-empty p{margin:15px 0 20px}.q-back{margin-bottom:26px}.q-question-heading{max-width:900px}.q-question-heading h1{font-size:68px;line-height:1.06;letter-spacing:-.045em;margin:18px 0 22px;max-width:900px}.q-hook{font-size:20px;line-height:1.6;max-width:780px}.q-quick-answer{display:flex;align-items:flex-start;gap:26px;background:#e7f0ef;border:1px solid #cbdad4;border-radius:9px;padding:28px 32px;margin:32px 0 0}.q-answer-star{font-size:45px;color:#2f7e85;line-height:1.1}.q-quick-answer h2{font-size:27px;margin:0 0 9px}.q-quick-answer p{font-size:18px;line-height:1.7;color:#254655;max-width:940px}.q-page-jumps{display:flex;gap:30px;flex-wrap:wrap;padding:18px 4px 25px;font-size:12px;color:#386876}.q-page-jumps a{text-decoration:none;border-bottom:1px dotted #7fa0a0;padding-bottom:3px}.q-learning-grid{display:grid;grid-template-columns:minmax(0,1.03fr) minmax(0,1fr);gap:28px;align-items:start;scroll-margin-top:25px}.q-interactive{background:#fffcf5;border:1px solid #cecfc0;border-radius:12px;overflow:hidden;box-shadow:0 8px 25px #183b5308}.q-lab-top{padding:25px 26px 18px}.q-mini-label{display:block;font-size:9px;line-height:1.5;letter-spacing:1.3px;font-weight:700;color:#577b80;margin:0 0 12px}.q-lab-top h2{font-size:32px;line-height:1.1;margin:0 0 13px}.q-lab-top p{font-size:14px;line-height:1.6}.q-force-modes{display:flex;gap:8px;margin:0 26px 8px}.q-force-modes button{font-size:11px;padding:7px 13px;min-height:36px}.q-forces-svg{width:100%;height:auto;display:block;background:radial-gradient(ellipse at center,#fffdfa,#f3efe2);overflow:visible}.q-flight-path{fill:none;stroke:#8d9a98;stroke-width:2;stroke-dasharray:7 7}.q-path-label{font:18px Patrick,cursive;fill:#71847f}.q-vector{stroke-width:4;fill:none}.q-lift{stroke:#16748b}.q-drag{stroke:#ae6346}.q-weight{stroke:#55537a}.q-push{stroke:#b1831b;stroke-dasharray:8 4}.q-force-label{font:25px Patrick,cursive}.q-lift-label{fill:#16748b}.q-drag-label{fill:#9c563d}.q-push-label{fill:#9c731a}.q-svg-caption{font:10px -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;fill:#74837d;letter-spacing:2px}.q-glide-control{display:block;padding:18px 26px 0;font-size:12px;font-weight:600}.q-glide-control>span:first-child{display:flex;align-items:center;justify-content:space-between;gap:10px}.q-glide-description{font-size:11px;font-weight:400;color:#6f8284}.q-glide-control input{width:100%;padding:0;border:0;height:32px;accent-color:#1d7288;background:transparent;cursor:pointer;margin-top:6px}.q-range-ends{display:flex;justify-content:space-between;font-size:10px;font-weight:400;color:#6f8284}.q-force-note{font-size:13px;line-height:1.65;background:#edf0e7;margin:19px 20px 0;padding:14px 16px;border-radius:6px;min-height:88px}.q-model-note{font-size:10px;line-height:1.6;padding:16px 26px;margin:0;color:#708078}.q-experiment{position:relative;background:#fbf3db;border:1px solid #e2d4b6;border-radius:5px 12px 7px 10px;padding:27px 28px;scroll-margin-top:25px}.q-experiment:before{content:'';position:absolute;top:-8px;right:30px;width:65px;height:16px;background:#e7d2a399;transform:rotate(4deg)}.q-experiment h2{font-size:34px;margin:0 0 12px;line-height:1.1}.q-experiment-question{font-size:15px;line-height:1.6;font-weight:600;margin-bottom:19px}.q-experiment h3{font-size:22px;margin:0 0 9px}.q-materials{display:flex;flex-wrap:wrap;gap:6px;list-style:none;padding:0;margin:0 0 23px}.q-materials li{padding:5px 9px;background:#fffcf1;border:1px solid #e1d7bc;border-radius:4px;font-size:11px;line-height:1.5;margin:0}.q-experiment-steps{padding:0;margin:0 0 23px;list-style:none;counter-reset:qsteps}.q-experiment-steps li{position:relative;padding-left:34px;margin:0 0 15px;font-size:14px;line-height:1.65;counter-increment:qsteps}.q-experiment-steps li:before{content:counter(qsteps);position:absolute;left:0;top:2px;display:grid;place-items:center;height:23px;width:23px;border:1px solid #bdad83;border-radius:50%;font:13px Patrick,cursive;color:#685d36}.q-test-recipe{margin:20px 0;padding:0;border-top:1px solid #ded1ae}.q-test-recipe>div{padding:12px 0;display:grid;grid-template-columns:87px 1fr;gap:13px;border-bottom:1px solid #ded1ae}.q-test-recipe dt{font-size:11px;font-weight:700;color:#5e6c50}.q-test-recipe dd{font-size:12px;line-height:1.6;margin:0;color:#506367}.q-experiment-explanation{font-size:12px;line-height:1.7;margin:19px 0 0}.q-experiment>.button{font-size:12px;padding:12px 17px;min-height:45px;margin-top:20px;max-width:100%;white-space:normal}.q-safety{font-size:10px;line-height:1.7;margin:17px 0 0;color:#6a6f5e}.q-citations{display:block;font-size:10px;line-height:1.7;color:#708483;margin-top:11px}.q-citations a{text-decoration:underline;text-decoration-color:#a8b8b0;text-underline-offset:3px}.q-myth{padding:29px 35px;margin:38px 0;border-left:4px solid #87a599;background:#eef0e5;border-radius:0 8px 8px 0}.q-myth h2{font-size:32px;margin:0 0 14px}.q-myth>p{font-size:17px;line-height:1.7;max-width:910px}.q-deeper{display:grid;grid-template-columns:260px 1fr;gap:55px;scroll-margin-top:30px;padding:20px 0 15px}.q-deeper-intro h2{font-size:37px;margin-bottom:15px}.q-deeper-intro>p{font-size:14px;line-height:1.7}.q-explanation{padding:0 0 28px;margin:0 0 27px;border-bottom:1px solid #d9d7c7;scroll-margin-top:25px}.q-explanation:last-child{margin-bottom:0}.q-explanation h3{font-size:29px;margin:0 0 16px}.q-explanation p{font-size:16px;line-height:1.8;margin:0 0 13px;max-width:770px}.q-fold-next{display:flex;align-items:center;justify-content:space-between;gap:28px;background:#e6eef0;border:1px solid #cbdad8;border-radius:10px;padding:30px 33px;margin:25px 0 40px}.q-fold-next h2{font-size:34px;margin:0 0 10px}.q-fold-next p{font-size:14px;line-height:1.6}.q-fold-next>a{max-width:300px;flex-shrink:0;text-align:center}.q-related{margin:45px 0}.q-related h2{font-size:34px;margin-bottom:23px}.q-related>div{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.q-related a{display:flex;align-items:center;justify-content:space-between;gap:20px;font:27px/1.2 Patrick,cursive;text-decoration:none;background:#fffaf0;border:1px solid #d9d1be;border-radius:6px;padding:20px 24px}.q-related a>span{color:#298198}.q-sources{border-top:1px solid #d0d4c5;padding-top:9px;margin-top:25px}.q-sources summary{display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:13px;padding:15px 0;cursor:pointer}.q-sources summary:before{content:'+';font-size:19px;color:#728d84}.q-sources[open] summary:before{content:'−'}.q-sources summary>span{margin-left:auto;font-size:11px;color:#6f827b}.q-sources>p{font-size:12px;line-height:1.7;max-width:830px;margin:12px 0 20px}.q-sources ol{padding-left:22px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:17px 40px;font-size:12px}.q-sources li{padding-left:3px}.q-sources li>span{display:block;font-size:10px;color:#6d7e78;margin-top:5px}.q-sources .q-review-note{font-size:10px;color:#79867f}.q-diagnostic-choices{display:grid;grid-template-columns:1fr 1fr;gap:9px;border:0;padding:0;margin:0 23px 23px}.q-diagnostic-choices label{position:relative;display:flex;align-items:flex-start;gap:8px;border:1px solid #ccd1c3;background:#f8f5e9;border-radius:7px;min-height:64px;padding:13px 12px;cursor:pointer;font-size:12px;line-height:1.5}.q-diagnostic-choices label:has(input:checked){background:#e1eeed;border-color:#52878d}.q-diagnostic-choices input{width:15px;height:15px;flex:none;margin:3px 0 0;padding:0;accent-color:#1d7288}.q-diagnostic-prompt{font:23px/1.5 Patrick,cursive;color:#6f8d82;text-align:center;padding:30px 20px 45px;border-top:1px dashed #d7d5c5}.q-diagnostic-prompt>span{font-size:34px;display:block}.q-diagnostic-results{background:#edf1e7}.q-diagnostic-results>section{padding:22px 25px}.q-diagnostic-results p{font-size:14px;line-height:1.7}.q-diagnostic-results h3{font-size:27px;margin:23px 0 10px}.q-diagnostic-results .q-observation{font-size:13px}.q-diagnostic-results dl{border-top:1px solid #ced7c7;margin:20px 0 0}.q-diagnostic-results dl>div{display:grid;grid-template-columns:90px 1fr;gap:10px;padding:11px 0;border-bottom:1px solid #ced7c7}.q-diagnostic-results dt{font-size:11px;font-weight:700}.q-diagnostic-results dd{font-size:12px;line-height:1.65;margin:0}.q-lab-link{display:block;font-size:12px;font-weight:600;color:#176782;text-underline-offset:4px;margin-top:23px}.q-test-plan{padding:0 25px 5px}.q-test-plan>label{display:block;font-size:12px;font-weight:600;margin:0 0 18px}.q-test-plan>label>span{font-weight:400;color:#78867e}.q-test-plan input,.q-test-plan textarea{width:100%;font:inherit;font-size:13px;border-color:#bccbc3;padding:11px 12px;margin-top:8px;min-height:44px}.q-test-constant{padding:14px 17px;background:#edf1e6;border-radius:6px;margin:22px 0}.q-test-constant>span{display:block;font-size:10px;text-transform:uppercase;letter-spacing:1px;font-weight:700;color:#567867;margin-bottom:7px}.q-test-constant p{font-size:12px;line-height:1.6}.q-test-rounds{display:flex;gap:12px;align-items:center;justify-content:space-between;padding:10px 0 4px}.q-test-rounds>div{flex:1;text-align:center;padding:16px 9px;border:1px dashed #b4c5bb;border-radius:7px}.q-round-number{font:29px Patrick,cursive;display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:#e1edec;margin:0 auto 10px;color:#2e7180}.q-test-rounds>div:last-child .q-round-number{background:#f2e4ba;color:#93751c}.q-test-rounds h3{font-size:24px;margin:0 0 8px}.q-test-rounds p{font-size:11px;line-height:1.5}.q-round-arrow{font-size:25px;color:#86a097}.q-test-measure{font-size:12px;line-height:1.7;margin-top:17px}.q-plan-notebook{padding:14px 17px;background:#23667d;color:white;text-decoration:none;line-height:1.5;text-align:center;border-radius:6px;margin-top:18px}.q-plan-notebook[aria-disabled=true]{opacity:.5;cursor:not-allowed}.q-plan-status{font-size:10px;line-height:1.6;color:#708078;padding:12px 0;margin:0}.q-visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.q-page [hidden],.q-index [hidden]{display:none!important}.q-page :focus-visible,.q-index :focus-visible{outline:3px solid #2c809c;outline-offset:4px}.q-page input[type=range]{touch-action:pan-y}
@media(max-width:1050px){.q-find{align-items:start;flex-direction:column;gap:20px}.q-find>label{width:100%;max-width:600px}.q-card-grid{gap:15px}.q-card{padding:24px 19px}.q-card h2{font-size:29px}.q-card p{font-size:13px}.q-bench-note{flex-wrap:wrap}.q-bench-note>a{margin-left:75px}.q-learning-grid{gap:20px}.q-lab-top,.q-experiment{padding:24px 22px}.q-deeper{grid-template-columns:220px 1fr;gap:32px}.q-diagnostic-choices{margin-left:18px;margin-right:18px}.q-diagnostic-choices label{padding:11px 9px;font-size:11px}.q-fold-next{padding:26px}.q-fold-next>a{max-width:255px;font-size:12px}.q-force-note{font-size:12px}.q-force-modes{margin-left:22px}}
@media(max-width:760px){.q-index-intro h1{font-size:56px;margin-top:13px}.q-index-intro>p{font-size:17px}.q-pencil-note{font-size:22px}.q-find{margin-top:30px}.q-filter{gap:6px}.q-filter button{font-size:11px;padding:8px 12px}.q-card-grid{grid-template-columns:1fr}.q-card{padding:25px}.q-card h2{font-size:33px}.q-card p{font-size:14px}.q-card-kind{margin-bottom:13px}.q-bench-note{padding:23px 22px;gap:12px}.q-bench-note>span{font-size:37px}.q-bench-note>div{flex:1;min-width:200px}.q-bench-note h2{font-size:27px}.q-bench-note p{font-size:13px}.q-bench-note>a{margin-left:0}.q-page .q-question-heading h1{font-size:47px;line-height:1.05;margin:14px 0 18px}.q-back{font-size:11px;margin-bottom:22px}.q-hook{font-size:17px;line-height:1.65}.q-quick-answer{padding:22px;gap:15px;margin-top:25px}.q-answer-star{font-size:32px}.q-quick-answer h2{font-size:25px}.q-quick-answer p{font-size:16px;line-height:1.7}.q-page-jumps{font-size:11px;gap:21px;padding-bottom:24px}.q-learning-grid{grid-template-columns:1fr;gap:25px}.q-interactive,.q-experiment{max-width:600px;width:100%;margin-left:auto;margin-right:auto}.q-lab-top{padding:22px 23px 18px}.q-lab-top h2{font-size:33px}.q-lab-top p{font-size:14px}.q-mini-label{font-size:9px;letter-spacing:1.1px}.q-force-modes{margin-left:23px}.q-forces-svg{max-height:370px}.q-force-note{font-size:13px;min-height:0}.q-experiment{padding:27px 24px}.q-experiment h2{font-size:34px}.q-model-note{font-size:10px}.q-myth{padding:26px;margin:30px 0}.q-myth h2{font-size:30px}.q-myth>p{font-size:16px}.q-deeper{grid-template-columns:1fr;gap:30px;padding-top:12px}.q-deeper-intro{max-width:500px}.q-deeper-intro h2{font-size:34px;margin-bottom:11px}.q-deeper-intro>p{font-size:14px}.q-explanation h3{font-size:28px}.q-explanation p{font-size:15px;line-height:1.8}.q-fold-next{display:block;padding:25px;margin-top:15px}.q-fold-next h2{font-size:31px}.q-fold-next>a{margin-top:24px;max-width:100%;font-size:12px}.q-related{margin:35px 0}.q-related h2{font-size:32px}.q-related>div{grid-template-columns:1fr;gap:12px}.q-related a{font-size:25px;padding:19px 21px}.q-sources summary{font-size:12px;gap:10px}.q-sources summary>span{font-size:9px}.q-sources ol{grid-template-columns:1fr;gap:16px;padding-left:17px}.q-sources>p{font-size:11px}.q-diagnostic-choices{margin-left:22px;margin-right:22px}.q-diagnostic-choices label{font-size:12px;min-height:63px}.q-test-plan{padding:0 23px 5px}.q-test-rounds{gap:9px}.q-test-rounds h3{font-size:24px}}
@media(max-width:390px){.q-index-intro h1{font-size:45px}.q-page .q-question-heading h1{font-size:40px}.q-quick-answer{padding:20px 18px;gap:0}.q-answer-star{display:none}.q-quick-answer p{font-size:15px}.q-page-jumps{gap:15px;font-size:10px}.q-lab-top{padding:22px 19px 16px}.q-lab-top h2{font-size:29px}.q-glide-control{padding-left:20px;padding-right:20px;font-size:11px}.q-glide-description{font-size:10px}.q-force-note{margin:17px 16px 0;padding:12px 13px;font-size:12px}.q-experiment{padding:24px 20px}.q-experiment h2{font-size:30px}.q-experiment-steps li{font-size:13px}.q-test-recipe>div{grid-template-columns:75px 1fr;gap:10px}.q-myth{padding:23px 21px}.q-myth h2{font-size:27px}.q-diagnostic-choices{margin-left:17px;margin-right:17px;gap:7px}.q-diagnostic-choices label{font-size:11px;padding:11px 8px;gap:6px}.q-diagnostic-results>section{padding:20px}.q-diagnostic-results dl>div{grid-template-columns:76px 1fr}.q-test-plan{padding-left:20px;padding-right:20px}.q-test-rounds h3{font-size:22px}.q-test-rounds p{font-size:10px}.q-sources summary>span{display:none}}
@media print{.q-find,.q-page-jumps,.q-interactive,.q-fold-next,.q-related,.q-back,.q-lab-link,.q-experiment>.button{display:none!important}.q-learning-grid,.q-deeper{display:block}.q-page .q-question-heading h1{font-size:32px}.q-quick-answer,.q-experiment,.q-myth{background:white;break-inside:avoid;box-shadow:none}.q-sources{display:block}.q-card-grid{display:block}.q-card{break-inside:avoid;margin:15px 0}.q-card:before{display:none}}

.q-interactive-source{padding:0 26px 18px}.q-interactive-source .q-citations{margin-top:0}.q-test-plan textarea{resize:vertical;line-height:1.6;margin-bottom:0}

.q-activity-provenance{font-size:10px;line-height:1.7;color:#6f7767;margin:13px 0 0}