/* The existing paper, ink, navigation and drawings remain the visual language. */
.br-home{--br-measure:64ch;font-size:var(--font,18px);line-height:1.65}
.br-home .br-hero,.br-home .br-section{padding-block:64px;border-top:1px solid var(--line)}
.br-home .br-hero{border:0;padding-top:64px}
.br-home .br-hero h1{font-size:clamp(2.25em,5.8vw,4.8em);font-weight:520;line-height:1.08;letter-spacing:-.055em;max-width:19ch;margin:0 0 40px;text-wrap:balance}
.br-home .br-hero-grid{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(230px,.75fr);gap:64px;align-items:start}
.br-home .br-intro{font-size:1.22em;line-height:1.55;max-width:54ch;margin:0 0 26px}
.br-home .br-intro strong{font-weight:600}
.br-home .br-proposal{font-size:1.03em;line-height:1.6;max-width:58ch;margin:0 0 10px}
.br-label{display:block;text-transform:uppercase;font-size:.7em;letter-spacing:.08em;font-weight:500;color:var(--sub);margin-bottom:10px}
.br-home .br-support{font-size:.9em;color:var(--sub);margin:0 0 22px;max-width:56ch}
.br-actions{display:flex;flex-wrap:wrap;gap:12px 30px;align-items:start;margin-top:22px}
.br-actions a{display:inline-flex;align-items:center;gap:12px;min-height:44px;text-decoration:underline;text-underline-offset:5px;text-decoration-thickness:1px;font-size:.9em}
.br-home .br-hero-art .bo-figure{max-width:250px;margin:0 auto}
.br-home .br-hero-art .bo-toggle{font-size:.75em;margin-bottom:8px}
.br-home .br-hero-art figcaption{font-size:.72em;line-height:1.5}
.br-home .br-author{margin:20px auto 0;max-width:31ch;padding:0;border:0;font-size:.83em;line-height:1.6}
.br-home .br-author p{margin:0 0 8px}
.br-home .br-author cite{font-style:normal;font-size:.85em;color:var(--sub)}
.br-home .br-section h2{font-size:2em;line-height:1.2;font-weight:540;letter-spacing:-.035em;max-width:30ch;margin:0 0 24px;text-wrap:balance}
.br-home .br-section>.br-lead{max-width:var(--br-measure);margin:0 0 26px;font-size:1em;line-height:1.7}
.br-home .br-section>p{max-width:var(--br-measure)}
.br-kicker{font-size:.7em;text-transform:uppercase;letter-spacing:.08em;line-height:1.55;color:var(--sub);margin:0 0 18px}
.br-home .br-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;margin:32px 0 26px;padding:0;list-style:none}
.br-steps>li{min-width:0;position:relative}
.br-step-label{font-size:.78em;line-height:1.5;margin:0 0 14px;min-height:3em;display:flex;align-items:baseline;gap:10px;color:var(--sub)}
.br-step-label>span{font-variant-numeric:tabular-nums;font-size:.85em;opacity:.8}
.br-step-record{min-height:172px;display:flex;align-items:center;justify-content:center;position:relative;padding:24px 22px}
.br-step-record>p{font-size:1.2em;line-height:1.5;margin:0;z-index:1;text-wrap:balance;overflow-wrap:break-word}
.br-step-record em{font-style:normal;font-weight:600;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:5px}
.br-step-sub{display:block;margin-top:14px}
.br-home .br-example-label{font-size:.74em;line-height:1.6;color:var(--sub);margin:0 0 16px}
.br-child-context{display:grid;grid-template-columns:minmax(0,1fr) 170px;gap:64px;align-items:start;max-width:1000px}
.br-home .br-child-context .br-lead{font-size:1em;line-height:1.7;max-width:64ch;margin:0}
.br-home .br-child-photo{margin:0;transform:rotate(1deg)}
.br-child-photo img{display:block;width:100%;height:auto}
.br-home .br-child-photo figcaption,.br-home .br-scene-child figcaption{font-size:max(16px,.8em);line-height:1.5;color:var(--sub);margin-top:8px}
.br-home .br-scene-child{margin:0 0 0 4px;max-width:220px}
.br-home .br-scene-child .rv-scene-photo{margin:0;height:auto}
.br-home .br-access{margin-top:28px;max-width:72ch}
.br-home .br-access>summary{font-size:.86em;padding-block:18px}
.br-home .br-access .br-more-body{font-size:.86em;line-height:1.7;padding-bottom:18px}
.br-frame{position:absolute;inset:0;width:100%;height:100%;fill:none;stroke:var(--sub);stroke-width:1;opacity:.8;pointer-events:none}
.br-ink{display:block;width:100%;max-width:280px;min-width:0}
.br-ink svg{display:block;width:100%;height:auto;overflow:visible}
.br-steps>li:not(:last-child)::after{content:'→';position:absolute;right:-22px;top:55%;font-size:1.2em;color:var(--sub)}
.br-home .br-takeaway{font-size:1em;line-height:1.7;max-width:var(--br-measure);margin:26px 0 0}
.br-home .bx-feature{margin-top:0;margin-bottom:0;padding-block:45px;grid-template-columns:minmax(0,1.65fr) minmax(180px,.65fr);gap:12px 48px;border-top:2px solid var(--ink);border-bottom:1px solid var(--line)}
.br-home .bx-feature .bx-feature-answer h2{font-size:1.8em;line-height:1.23;max-width:32ch;margin-bottom:20px}
.br-home .bx-feature .bx-feature-answer p{font-size:1.05em;line-height:1.7;max-width:60ch}
.br-home .bx-feature .cl-feature-context{max-width:67ch;font-size:.82em;line-height:1.65;margin-top:15px}
.br-home .bx-feature .bx-sketch{max-width:290px;margin:0;align-self:center}
.br-home .bx-feature .bx-feature-meta{padding-top:18px}
.br-home .br-chain{display:flex;flex-wrap:wrap;gap:18px 30px;list-style:none;margin:28px 0 22px;padding:0}
.br-chain li{position:relative;min-width:0;font-size:1.08em;line-height:1.55}
.br-chain li span{display:block;border-bottom:1px solid var(--line);padding:6px 0 10px}
.br-chain li:not(:last-child)::after{content:'→';position:absolute;right:-25px;top:6px;color:var(--sub)}
.br-home .br-families{display:grid;grid-template-columns:1fr 1fr;gap:30px 50px;margin-top:36px}
.br-families>div{border-top:1px solid var(--line);padding-top:18px;min-width:0}
.br-home .br-families h3{font-size:1.08em;line-height:1.5;letter-spacing:-.02em;margin:0 0 9px;font-weight:500}
.br-home .br-families p{font-size:.88em;line-height:1.65;color:var(--sub);margin:0;max-width:48ch}
.br-boundary{display:grid;grid-template-columns:1fr 1fr;gap:50px;margin-top:34px;padding-top:24px;border-top:2px solid var(--ink)}
.br-home .br-boundary p{font-size:.88em;line-height:1.7;margin:0;max-width:55ch}
.br-home #proposals{padding-block:58px}
.br-home #proposals .bp-heading{gap:45px;margin-bottom:28px}
.br-home #proposals .br-consequence{max-width:74ch;font-size:.98em;line-height:1.7;margin:0 0 32px}
.br-learning{display:grid;grid-template-columns:1fr 1.5fr;gap:42px;padding-block:27px;border-bottom:1px solid var(--line)}
.br-home .br-learning h3{font-size:1.15em;line-height:1.4;margin:0;font-weight:550;max-width:22ch}
.br-home .br-learning p{font-size:.95em;line-height:1.7;margin:0;max-width:62ch}
.br-more{border-top:1px solid var(--line);margin:0}
.br-more:last-child{border-bottom:1px solid var(--line)}
.br-more>summary{list-style:none;display:flex;gap:25px;align-items:center;justify-content:space-between;cursor:pointer;padding:24px 0;font-size:1.08em;line-height:1.5;min-height:64px}
.br-more>summary::-webkit-details-marker{display:none}
.br-more>summary:hover>span:first-child{text-decoration:underline;text-underline-offset:5px;text-decoration-thickness:1px}
.br-more-mark{font-size:1.4em;font-weight:350;flex:0 0 20px;text-align:center;transition:transform .15s}
.br-more[open]>.br-more-mark,.br-more[open]>summary>.br-more-mark{transform:rotate(45deg)}
.br-more-body{padding:5px 0 30px}
.br-home .br-more-body .wrap{width:100%;max-width:none;padding-inline:0;margin-inline:0}
.br-home .br-more-body .rv-section{border:0;padding-block:15px}
.br-home .br-more-body h2{font-size:1.45em;max-width:48ch}
.br-home .br-more-body .bx-exchange{margin:0}
.br-home .br-more-body .rv-record-boundary{border:0;padding-top:0}
.br-home #ai>.br-more:first-of-type{margin-top:30px}
.br-home #ai>.cl-note{margin-top:16px}
.br-home #check{padding-block:56px}
.br-home #check h2{font-size:1.9em;line-height:1.25;max-width:35ch}
.br-home #check>p{max-width:66ch}
.br-home #materials{padding-block:55px}
.br-home :where(a,summary,input):focus-visible{outline:2px solid var(--ink);outline-offset:5px}
.br-home :where(section,aside,article,[id]){scroll-margin-top:100px}
@media(max-width:1000px){.br-home .br-hero-grid{gap:38px;grid-template-columns:minmax(0,1.7fr) minmax(200px,.8fr)}.br-home .br-steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}.br-steps>li:nth-child(2)::after{display:none}.br-step-label{min-height:0}.br-step-record{min-height:150px}}
@media(max-width:700px){
 .br-home .br-hero,.br-home .br-section{padding-block:36px}
 .br-home .br-hero h1{font-size:2.25em;max-width:19ch;margin-bottom:25px;letter-spacing:-.045em}
 .br-home .br-hero-grid{grid-template-columns:1fr;gap:25px}
 .br-home .br-intro{font-size:1.07em;line-height:1.6;margin-bottom:22px}
 .br-home .br-proposal{font-size:.98em}
 .br-home .br-support{font-size:.87em}
 .br-actions{gap:2px 24px;margin-top:16px}
 .br-home .br-hero-art{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:20px;align-items:center}
 .br-home .br-hero-art .bo-figure{width:100%;max-width:180px;margin:0}
 .br-home .br-hero-art .bo-toggle{font-size:.68em;padding:6px;gap:6px}
 .br-home .br-hero-art .bo-toggle input{width:16px;height:16px;flex-basis:16px}
 .br-home .br-hero-art figcaption{font-size:.65em}
 .br-home .br-author{margin:0;font-size:.8em}
 .br-home .br-section h2{font-size:1.65em;line-height:1.23;max-width:30ch;margin-bottom:20px}
 .br-kicker{font-size:.67em;margin-bottom:14px}
 .br-home .br-steps{grid-template-columns:1fr;gap:26px;margin:22px 0}
 .br-child-context{grid-template-columns:1fr;gap:22px}
 .br-home .br-child-photo{width:150px;justify-self:end;margin-right:8px}
 .br-step-label{font-size:.78em;margin-bottom:8px}
 .br-step-record{min-height:110px;padding:20px 26px}
 .br-step-record>p{font-size:1.2em;text-align:center;max-width:23ch}
 .br-steps>li:not(:last-child)::after{display:block;content:'↓';right:18px;top:auto;bottom:-26px;line-height:26px;font-size:1em}
 .br-home .br-takeaway{font-size:.95em;margin-top:22px}
 .br-home .bx-feature{padding-block:30px;grid-template-columns:1fr;gap:12px}
 .br-home .bx-feature .bx-feature-answer h2{font-size:1.6em;line-height:1.28;margin-bottom:18px}
 .br-home .bx-feature .bx-feature-answer p{font-size:1em}
 .br-home .bx-feature .bx-sketch{max-width:190px;justify-self:end;margin-top:0}
 .br-home .bx-feature .bx-feature-meta{margin-top:-8px;padding-top:10px}
 .br-home .br-chain{display:block;margin-top:20px}
 .br-chain li{font-size:1.1em;margin:0 0 16px;padding-left:25px}
 .br-chain li span{padding:4px 0 8px}
 .br-chain li:not(:last-child)::after{content:'↓';left:0;right:auto;top:25px;font-size:.85em}
 .br-home .br-families{grid-template-columns:1fr;gap:22px;margin-top:28px}
 .br-home .br-families h3{font-size:1.05em}
 .br-home .br-families p{font-size:.88em;max-width:none}
 .br-boundary{grid-template-columns:1fr;gap:16px;margin-top:26px;padding-top:20px}
 .br-home #proposals{padding-block:36px}
 .br-home #proposals .bp-heading{gap:22px;margin-bottom:22px}
 .br-home #proposals .br-consequence{font-size:.94em;margin-bottom:26px}
 .br-learning{grid-template-columns:1fr;gap:14px;padding-block:24px}
 .br-home .br-learning h3{max-width:none}
 .br-more>summary{padding:20px 0;font-size:1em;gap:15px}
 .br-home .br-more-body h2{font-size:1.35em}
 .br-home #check{padding-block:36px}
 .br-home #check h2{font-size:1.6em}
 .br-home #materials{padding-block:36px}
 .br-home :where(section,aside,article,[id]){scroll-margin-top:85px}
}
@media(max-width:360px){.br-home .br-hero-art{grid-template-columns:1fr;gap:18px}.br-home .br-hero-art .bo-figure{max-width:210px;margin:auto}.br-home .br-author{max-width:32ch;margin:auto}.br-home .br-hero h1{font-size:2.1em}.br-home .br-hero-art .bo-toggle{align-items:start}}
@media(prefers-reduced-motion:reduce){.br-more-mark{transition:none}}
@media print{.br-more-body{display:block!important}.br-home .br-hero h1{font-size:32pt}.br-home .br-section{break-inside:auto}.br-home .br-steps{break-inside:avoid}}