/* Original paper, print and type system; interaction is a continuation of the artwork. */
.rf-offer{position:relative;isolation:isolate;padding:100px max(4vw,24px) 56px;scroll-margin-top:64px;max-width:1600px;margin:auto;}
.rf-offer::before{content:'';position:absolute;inset:0;background:var(--paper);opacity:.82;z-index:-1;pointer-events:none}
.rf-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;margin-bottom:48px}
.rf-eyebrow,.rf-small{font:500 10px/1.5 var(--mono);letter-spacing:.17em;display:block;color:var(--ink2)}
.rf-eyebrow{margin:0 0 20px;color:var(--red)}
.rf-heading h2{font:700 clamp(42px,4.5vw,68px)/1.32 var(--serif);letter-spacing:.035em;margin:0}
.rf-intro{font:500 14px/2 var(--serif);margin:0 8% 6px 0;letter-spacing:.05em}
.rf-workbench{display:grid;grid-template-columns:minmax(300px,.92fr) minmax(0,1.3fr);gap:7%;align-items:start}
.rf-choices{border-top:1px solid var(--ink);position:relative}
.rf-choices button{width:100%;border:0;border-bottom:1px solid var(--line);background:none;color:var(--ink);text-align:left;display:grid;grid-template-columns:26px 1fr 26px;align-items:center;gap:12px;min-height:87px;padding:14px 0;cursor:pointer;position:relative;transition:color .2s}
.rf-choices button::before{content:'';position:absolute;inset:auto 0 -1px;height:2px;background:var(--red);transform:scaleX(0);transform-origin:left;transition:transform .38s cubic-bezier(.2,.75,.25,1)}
.rf-choices button[aria-selected=true]::before{transform:scaleX(1)}
.rf-n{align-self:start;margin-top:4px;font:500 10px/1.5 var(--mono);color:var(--mut)}
.rf-choices small{display:block;font:500 10.5px/1.5 var(--sans);color:var(--mut);margin-bottom:5px;letter-spacing:.06em}
.rf-choices b{font:600 clamp(14px,1.4vw,19px)/1.6 var(--serif);letter-spacing:.015em}
.rf-choices i{font:400 22px/1 var(--sans);font-style:normal;transition:transform .26s,background .26s,color .26s;display:grid;place-items:center;width:26px;height:26px;border-radius:50%}
.rf-choices [aria-selected=true]{color:var(--red)}
.rf-choices [aria-selected=true] i{background:var(--red);color:var(--paper);transform:rotate(45deg)}
.rf-choices [aria-selected=true] small,.rf-choices [aria-selected=true] .rf-n{color:var(--red)}
.rf-choices button:hover i{transform:translate(3px,-3px)}
.rf-choices button:active{color:var(--blue)}
.rf-offer button:focus-visible,.rf-panel:focus-visible{outline:2px solid var(--blue);outline-offset:5px}
.rf-answer{min-width:0;position:relative}
.rf-visual{margin-top:-20px;position:relative}
.rf-diagram{width:100%;height:auto;display:block;overflow:visible}
.rf-diagram text{font:500 12px var(--sans);fill:var(--ink)}
.rf-diagram .rf-diagram-no{font:400 10px var(--mono);letter-spacing:.2em;fill:var(--mut)}
.rf-plate{mix-blend-mode:multiply;transition:transform .62s cubic-bezier(.2,.75,.2,1);transform-box:view-box}
.rf-red{transform:translate(128px,160px) scale(1.03) rotate(-8deg)}
.rf-blue{transform:translate(520px,160px) scale(.65) rotate(8deg)}
.rf-yellow{transform:translate(320px,160px) scale(.9)}
[data-topic="1"] .rf-red{transform:translate(230px,116px) scale(1.05) rotate(8deg)}
[data-topic="1"] .rf-blue{transform:translate(385px,164px) scale(1.12) rotate(-12deg)}
[data-topic="1"] .rf-yellow{transform:translate(245px,210px) scale(.95)}
[data-topic="2"] .rf-red{transform:translate(160px,145px) scale(1.25) rotate(-20deg)}
[data-topic="2"] .rf-blue{transform:translate(490px,160px) scale(.86) rotate(0deg)}
[data-topic="2"] .rf-yellow{transform:translate(222px,166px) scale(1.1)}
[data-topic="3"] .rf-red{transform:translate(222px,150px) scale(.95) rotate(0deg)}
[data-topic="3"] .rf-blue{transform:translate(420px,150px) scale(.98) rotate(0deg)}
[data-topic="3"] .rf-yellow{transform:translate(320px,150px) scale(.95)}
[data-topic="4"] .rf-red{transform:translate(260px,153px) scale(1.08) rotate(-12deg)}
[data-topic="4"] .rf-blue{transform:translate(375px,165px) scale(.64) rotate(14deg)}
[data-topic="4"] .rf-yellow{transform:translate(310px,155px) scale(1.63)}
[data-topic="5"] .rf-red{transform:translate(190px,150px) scale(1.16) rotate(14deg)}
[data-topic="5"] .rf-blue{transform:translate(445px,150px) scale(1.14) rotate(-8deg)}
[data-topic="5"] .rf-yellow{transform:translate(320px,151px) scale(.58)}
.rf-trace{stroke-dasharray:900;stroke-dashoffset:0}
.rf-offer.rf-switch .rf-trace{animation:rf-draw .52s cubic-bezier(.2,.75,.25,1) both}
.rf-offer.rf-switch .rf-trace-b{animation-delay:60ms}
@keyframes rf-draw{from{stroke-dashoffset:900}to{stroke-dashoffset:0}}
.rf-caption{font:500 12px/1.7 var(--serif);text-align:center;letter-spacing:.1em;margin:-2px 0 24px;color:var(--ink2)}
.rf-panel[hidden]{display:none}
.rf-response{border-top:1px solid var(--ink);padding-top:16px}
.rf-small i{font-style:normal;color:var(--mut)}
.rf-response h3{font:600 clamp(21px,2.1vw,30px)/1.65 var(--serif);margin:9px 0 22px;letter-spacing:.015em}
.rf-proof{display:grid;grid-template-columns:96px minmax(0,1fr);column-gap:14px;align-items:baseline;padding-bottom:16px}
.rf-proof>.rf-small{grid-column:1;grid-row:1 / span 3;line-height:44px;letter-spacing:.06em}
.rf-case{grid-column:2;display:flex;align-items:center;justify-content:space-between;gap:12px;border:0;border-bottom:1px solid var(--line);padding:9px 0;min-height:44px;background:none;color:var(--ink);text-align:left;font:500 12px/1.65 var(--sans);cursor:pointer}
.rf-case i{font-style:normal;transition:transform .2s}
.rf-case:hover{color:var(--blue)}.rf-case:hover i{transform:translate(2px,-2px)}
.rf-consult{display:flex;align-items:center;justify-content:space-between;gap:50px;width:100%;border:1px solid var(--ink);background:var(--ink);color:var(--paper);font:600 13px/1.4 var(--sans);padding:16px 22px;min-height:56px;cursor:pointer;transition:background .22s,color .22s}
.rf-consult span{font-size:23px;transition:transform .22s}
.rf-consult:hover{background:var(--red);border-color:var(--red)}.rf-consult:hover span{transform:translateX(5px)}
.rf-foot{border-top:1px solid var(--line);margin-top:44px;padding:16px 0 0;display:flex;align-items:center;gap:10px 26px;flex-wrap:wrap;font:500 12px/1.8 var(--sans)}
.rf-foot>span{font-family:var(--serif);margin-right:auto}
.rf-foot button{padding:12px 0;border:0;background:none;font:500 12px/1.6 var(--sans);color:var(--ink2);cursor:pointer;min-height:44px}.rf-foot i{font-style:normal;color:var(--red);margin-left:10px}
.rf-foot button:hover{color:var(--red)}
.rf-hero-links{display:flex;gap:22px;flex-wrap:wrap;margin-top:22px;font:500 11px/1.5 var(--sans);letter-spacing:.06em}
.rf-hero-links a{color:var(--ink2);text-decoration:none;border-bottom:1px solid var(--line);display:inline-flex;align-items:center;min-height:44px;gap:16px}.rf-hero-links a:hover{color:var(--red);border-color:var(--red)}
.rf-skip{position:absolute;right:0;top:0;min-height:44px;display:inline-flex;align-items:center;font:500 11px/1.5 var(--sans);text-decoration:none;border-bottom:1px solid var(--line);color:var(--ink2)}
#teach .sec-head,#thinking .sec-head{position:relative}
/* The original expanding consultation sheet, with sharper paper edges. */
.askp-sheet{border-radius:3px;transition-timing-function:cubic-bezier(.2,.75,.25,1)}
.askp-sheet>.askp-x{width:44px!important;height:44px!important}
.askp-c span{min-height:44px}.askp-ctx button{min-width:44px;min-height:44px}
.askp-back,.askp-dr-x,.askp-regen,.askp-clr,.askp-pv-b,.askp-nx-b,.nx-ask,.sec-ask{min-height:44px;box-sizing:border-box}
.rf-panel-tabs{display:none}
@media(min-width:900px){.askp-ex{background:var(--paper)}.askp-sheet{border-top:3px solid var(--red)}}
@media(max-width:899px){
 .rf-heading{gap:20px}.rf-intro{margin-right:0}.rf-workbench{gap:5%;grid-template-columns:minmax(260px,1fr) minmax(0,1fr)}
 .rf-choices b{font-size:15px}.rf-response h3{font-size:23px}.rf-proof{grid-template-columns:1fr}.rf-proof>.rf-small{grid-row:auto;grid-column:auto;line-height:1.6}.rf-case{grid-column:1}
 .askp-sheet{height:calc(100svh - 24px);max-height:calc(100svh - 24px);border-radius:10px 10px 0 0;overflow:hidden!important;padding-top:64px}
 .askp-sheet>.askp-x{position:absolute!important;top:10px!important;right:12px!important;margin:0!important}
 .askp-form{overflow:auto!important;min-height:0;flex:1 1 auto!important;padding:14px 18px 26px}
 .rf-panel-tabs{display:flex;position:absolute;top:10px;left:18px;right:74px;gap:16px;height:44px}
 .rf-panel-tabs button{border:0;border-bottom:2px solid transparent;background:none;font:600 12px var(--sans);color:var(--mut);padding:0 2px;min-height:44px}
 .rf-panel-tabs button[aria-pressed=true]{border-color:var(--red);color:var(--ink)}
 .rf-panel-tabs button[hidden]{display:none}
 .askp.mobile-cases .askp-form{display:none}
 .askp.mobile-cases.show-ex .askp-ex{display:block;overflow:auto;opacity:1;flex:1;min-height:0;padding:14px 18px 26px;background:var(--paper)}
 .askp-ex-in{height:auto}.askp-ex-g{display:grid;gap:16px}.askp-ex-t{font:600 14px/1.8 var(--serif);margin:8px 0 20px}
 .exc{display:grid;grid-template-columns:100px minmax(0,1fr);gap:16px;align-items:start;text-align:left;border:0;border-top:1px solid var(--line);padding:16px 0;background:none;color:var(--ink);width:100%;cursor:pointer}
 .exc-v{height:90px;overflow:hidden}.exc-v svg,.exc-v img{width:100%;height:100%;object-fit:cover}.exc-b small{display:block;font:500 10px/1.5 var(--sans);color:var(--mut)}.exc-b b{display:block;font:600 16px/1.5 var(--serif);margin:6px 0}.exc-l{font:400 12px/1.8 var(--sans)}
 .askp-dnav{display:flex;align-items:center;justify-content:space-between;position:sticky;top:-14px;background:var(--paper);z-index:2;border-bottom:1px solid var(--line);gap:10px}.askp-dnav button{min-width:44px;min-height:44px;border:0;background:none;color:var(--ink);font-size:12px}.askp-dn{display:flex;align-items:center;white-space:nowrap}
 .askp-doc{font:400 14px/1.85 var(--sans);padding-top:16px}.askp-doc .doc-hero .exc-v{height:150px}.askp-doc .eyebrow{margin-top:18px}.askp-doc h3{font:600 24px/1.5 var(--serif)}.askp-doc h4{margin:24px 0 8px}.askp-doc .pg-meta{font-size:12px}.askp-doc .pg-meta>div{display:grid!important;grid-template-columns:6em 1fr;gap:10px;padding:8px 0;border-bottom:1px solid var(--line)}.askp-doc dd{margin:0}.askp-doc img{max-width:100%;height:auto}.askp-doc .xcard{display:flex;align-items:center;gap:12px}.askp-doc .xcard img{width:64px}.askp-doc .doc-v{display:grid;grid-template-columns:1fr 1fr;gap:10px}.askp-doc ul{padding-left:1.2em}.askp-doc section{display:block!important}.askp-doc .sp-txt{padding:0}
 .askp.drafting .askp-form{display:none}.askp.drafting .askp-draft{display:flex;flex:1;overflow:auto;border:0;padding:12px 18px 24px!important;min-height:0}.askp.drafting .askp-dr-h{padding:0}.askp.drafting #askp-dt{min-height:180px;flex:1}.askp-dr-h .askp-dr-x{display:none}
}
@media(max-width:640px){
 .rf-offer{padding:66px 22px 28px;scroll-margin-top:68px}.rf-heading{display:block;margin-bottom:26px}.rf-eyebrow{font-size:9px;letter-spacing:.1em;margin-bottom:14px}.rf-heading h2{font-size:36px;line-height:1.4;letter-spacing:0}.rf-intro{font-size:12px;line-height:1.8;margin-top:20px}.rf-intro br{display:none}
 .rf-workbench{display:block}.rf-choices{display:grid;grid-template-columns:1fr 1fr;gap:0 18px;border-top:1px solid var(--ink)}
 .rf-choices button{grid-template-columns:18px 1fr;gap:5px;min-height:100px;padding:12px 0;align-items:start}.rf-choices b{font-size:12px;line-height:1.75;font-weight:500;display:block}.rf-choices small{font-size:10px;line-height:1.6;margin-bottom:5px}.rf-choices i{display:none}.rf-n{font-size:9px;margin-top:2px}.rf-choices [aria-selected=true] b{font-weight:700}
 .rf-answer{margin-top:24px}.rf-visual{margin-top:0}.rf-caption{font-size:11px;margin:0 0 20px}.rf-diagram{width:calc(100% + 24px);max-width:none;margin-left:-12px}.rf-diagram text{font-size:17px}.rf-diagram .rf-diagram-no{font-size:12px}
 .rf-response h3{font-size:22px;margin-bottom:18px}.rf-small{font-size:10px}.rf-consult{min-height:54px;font-size:12px}.rf-foot{margin-top:28px;gap:0 18px}.rf-foot>span{width:100%;font-size:12px}.rf-foot button{font-size:11px;max-width:100%}
 .rf-hero-links{margin-top:12px;gap:20px;font-size:10px}.rf-skip{position:static;font-size:10px;margin-top:10px;width:max-content}
}
@media(prefers-reduced-motion:reduce){.rf-offer *{animation:none!important;transition:none!important}.rf-hero-links *{transition:none!important}}
/* A single asymmetric spread: the artwork starts opposite the headline. */
@media(min-width:900px){
 .rf-offer{display:grid;grid-template-columns:minmax(300px,.92fr) minmax(0,1.3fr);column-gap:7%;padding-top:88px}
 .rf-heading{display:block;grid-column:1;grid-row:1;margin:0 0 32px;align-self:end}
 .rf-heading h2{font-size:clamp(40px,3.6vw,56px)}
 .rf-intro{display:none}
 .rf-answer::before{content:'構想も、現場も。いま引っかかっているところから。';display:block;font:500 12px/1.8 var(--serif);letter-spacing:.04em;text-align:right;margin:0 0 18px}
 .rf-workbench{display:contents}.rf-choices{grid-column:1;grid-row:2}.rf-answer{grid-column:2;grid-row:1 / span 2;align-self:end}
 .rf-choices button{min-height:82px}.rf-visual{margin-top:0}.rf-foot{grid-column:1/-1}
 .rf-response h3{font-size:clamp(22px,2vw,28px);margin-bottom:18px}
 .rf-diagram{max-height:310px}
}
.rf-draft-note{font:500 12px/1.7 var(--sans);color:var(--ink2);border-left:2px solid var(--red);padding-left:10px;margin:12px 0 0}.rf-draft-note[hidden]{display:none}
.askp-dn[hidden]{display:none!important}
.rf-eyebrow{color:#ac371f}.rf-choices [aria-selected=true] b,.rf-choices [aria-selected=true] small,.rf-choices [aria-selected=true] .rf-n{color:#b03820}
@media(min-width:900px){
 .rf-answer{align-self:start}.rf-panel{min-height:367px}.rf-proof{min-height:148px;align-content:start}
 .askp-ex-g:has(.exc:only-child){grid-template-columns:1fr}
 .askp-ex-g:has(.exc:only-child) .exc-v{height:240px}
 .askp-ex-g:has(.exc:only-child) .exc-b{padding:20px}
 .askp-ex-g:has(.exc:only-child) .exc-b b{font-size:21px;line-height:1.6}
 .askp-ex-g:has(.exc:only-child) .exc-l{font-size:14px;line-height:1.9}
 .askp-ex-g .exc{border-radius:3px}
}
@media(max-width:640px){.rf-choices b{font-size:13px}.rf-choices small{font-size:11px}.rf-choices button{min-height:110px}}
/* Chapter links share the header row; they never cover the slide controls. */
.rf-skip{position:static;flex:none;align-self:flex-end;margin:0;white-space:nowrap}
#teach .tsc-nav,#thinking .tsc-nav{margin-left:auto;gap:8px}
.tsc-b{width:44px!important;height:44px!important}
.tsc-dots{gap:0!important}.tsc-dots button{position:relative;width:32px!important;height:44px!important;background:transparent!important;border:0!important;border-radius:0!important}
.tsc-dots button::after{content:'';position:absolute;width:6px;height:6px;left:50%;top:50%;transform:translate(-50%,-50%);border-radius:99px;background:var(--line);transition:width .22s,background .22s}.tsc-dots button.on::after{width:24px;background:var(--ink)}
@media(max-width:760px){
 #teach .sec-head,#thinking .sec-head{flex-wrap:wrap;gap:8px 16px}
 #teach .sec-head>.tsc-nav,#thinking .sec-head>.tsc-nav{order:3;width:100%;justify-content:center;margin-left:0}
 .rf-skip{margin-left:auto;align-self:center;font-size:10px}
 .tsc-dots button{width:44px!important}
}
@media(min-width:900px){.rf-offer{padding-top:64px;padding-bottom:40px}.rf-choices button{min-height:76px}.rf-heading{margin-bottom:24px}.rf-diagram{max-height:250px}.rf-foot{margin-top:28px}}