figure.r4fig{
  --navy:#0E2A47;      
  --green:#157A54;     
  --done:#A3CDBA;      
  --paper:#FBFAF7;     
  --ink:#1F2933;
  --ink-soft:#67757F;
  --rule:#E5E0D6;      
  --open:#E7E2D8;      
  --r:3px;             

  
  --t-display:2.25rem; --t-title:1.5rem; --t-lead:1.1875rem;
  --t-body:1.0625rem; --t-small:.9375rem; --t-micro:.8125rem;

  
  --s1:.5rem; --s2:1rem; --s3:1.5rem; --s4:2.5rem; --s5:4rem; --s6:6rem;

  
  --wrong:#C13A3A;
}
figure.r4fig{
  --bar:#2F6FEB;        
  --change:#8E44AD;     
  --gap:#EFA02A;        
  --kind2:#C2478A;      
}
figure.r4fig{
  --bar:#93B8F2;      
  --change:#C4A4E6;   
  --gap:#F2B56C;      
  --kind2:#E7A8BD;    
  --mark:#164EA5;     
  --fig-out:1.6px;    
  --fig-seam:1px;     
  --seam-a:.34;       
}
figure.r4fig button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
figure.r4fig a{color:inherit;text-decoration:none}
figure.r4fig :focus-visible{outline:2px solid var(--navy);outline-offset:3px;border-radius:var(--r)}
figure.r4fig .frame{max-width:56rem;margin:0 auto;padding:0 var(--s3)}
figure.r4fig .skip{position:absolute;left:-9999px}
figure.r4fig .skip:focus{left:var(--s3);top:var(--s3);background:var(--paper);padding:var(--s1) var(--s2);
  border-radius:var(--r);z-index:50}
figure.r4fig .top{position:sticky;top:0;z-index:20;background:var(--paper);
  border-bottom:1px solid var(--rule)}
figure.r4fig .top.on-navy{background:var(--navy);border-bottom-color:rgba(255,255,255,.10)}
figure.r4fig .top .frame{display:flex;align-items:center;gap:var(--s3);
  padding-top:.9rem;padding-bottom:.9rem}
figure.r4fig .wordmark{font-weight:900;font-size:var(--t-body);letter-spacing:-.01em;color:var(--navy)}
figure.r4fig .wordmark span{color:var(--green)}
figure.r4fig .top.on-navy .wordmark{color:#fff}
figure.r4fig .top.on-navy .wordmark span{color:var(--green-light,#2FB37E)}
figure.r4fig .mainnav{display:flex;gap:var(--s3);margin-left:auto;align-items:center}
figure.r4fig .mainnav a{font-size:var(--t-body);color:var(--ink-soft)}
figure.r4fig .mainnav a:hover{color:var(--navy)}
figure.r4fig .top a[aria-current="page"]{text-decoration:underline;text-underline-offset:.3em;text-decoration-thickness:1px}
figure.r4fig .navpanel .go-s{display:none}
figure.r4fig .top.on-navy .mainnav a{color:#9DB7CB}
figure.r4fig .top.on-navy .mainnav a:hover{color:#fff}
figure.r4fig .mainnav .go .go-s{display:none}
figure.r4fig .mainnav .go{white-space:nowrap;background:var(--navy);color:var(--paper);border-radius:var(--r);
  padding:.45rem 1rem;font-weight:700}
figure.r4fig .mainnav .go:hover{background:#153a5f;color:var(--paper)}
figure.r4fig .top.on-navy .mainnav .go{background:var(--mist,#E4EEF5);color:var(--navy)}
figure.r4fig .top.on-navy .mainnav .go:hover{background:#fff;color:var(--navy)}
figure.r4fig section{padding:var(--s6) 0}
figure.r4fig .navy{background:var(--navy);color:var(--mist,#E4EEF5)}
figure.r4fig .navy h2,figure.r4fig .navy h1{color:#fff}
figure.r4fig h1{font-size:2.75rem;font-weight:900;letter-spacing:-.03em;line-height:1.05}
figure.r4fig h2{font-size:var(--t-display);font-weight:800;letter-spacing:-.02em;
  line-height:1.15;max-width:20ch}
figure.r4fig h3{font-size:var(--t-title);font-weight:800;letter-spacing:-.015em;margin-top:var(--s4)}
figure.r4fig .lede{color:var(--ink-soft);font-size:var(--t-lead);max-width:46ch;margin-top:var(--s2)}
figure.r4fig .navy .lede{color:#9DB7CB}
figure.r4fig .act{display:inline-block;background:var(--navy);color:var(--paper);
  border-radius:var(--r);padding:.7rem 1.5rem;font-weight:700;margin-top:var(--s3)}
figure.r4fig .act:hover{background:#153a5f;color:var(--paper)}
figure.r4fig .navy .act{background:var(--mist,#E4EEF5);color:var(--navy)}
figure.r4fig .navy .act:hover{background:#fff}
figure.r4fig .small{font-size:var(--t-small);color:var(--ink-soft);margin-top:var(--s2)}
figure.r4fig .navy .small{color:#9DB7CB}
figure.r4fig .hero{padding:var(--s6) 0 calc(var(--s6) + var(--s4));text-align:center}
figure.r4fig .hero h1{max-width:14ch;margin:var(--s3) auto 0}
figure.r4fig .hero .lede{margin:var(--s3) auto 0;text-align:center}
figure.r4fig .mark{width:8.5rem;height:5.4rem;margin:0 auto;position:relative}
figure.r4fig .mark svg{width:100%;height:100%;overflow:visible}
figure.r4fig .mark .bar{fill:var(--mist,#E4EEF5);transform-origin:left center;
  animation:lay .5s cubic-bezier(.2,.7,.3,1) backwards}
figure.r4fig .mark .bar.b1{animation-delay:.05s}
figure.r4fig .mark .bar.b2{animation-delay:.17s}
figure.r4fig .mark .bar.b3,figure.r4fig .mark .bar.b4{animation-delay:.29s}
figure.r4fig .mark .bar.b4{fill:var(--green-light,#2FB37E)}
figure.r4fig .mark .thread{fill:none;stroke:#4FB3E8;stroke-width:4;stroke-linecap:round;
  stroke-dasharray:var(--len);stroke-dashoffset:var(--len);
  animation:stitch 1.3s cubic-bezier(.4,0,.2,1) .62s forwards,
            threadout .45s ease-out 2.45s forwards}
@keyframes lay{from{transform:scaleX(0);opacity:0}to{transform:scaleX(1);opacity:1}}
@keyframes stitch{to{stroke-dashoffset:0}}
@keyframes threadout{to{opacity:0}}
figure.r4fig .hero .wm{font-weight:900;font-size:var(--t-title);color:#fff;margin-top:var(--s3);
  letter-spacing:-.015em;animation:rise .6s ease-out 2.1s backwards}
figure.r4fig .hero .wm span{color:var(--green-light,#2FB37E)}
figure.r4fig .hero h1,figure.r4fig .hero .lede,figure.r4fig .hero .act{animation:rise .6s ease-out backwards}
figure.r4fig .hero h1{animation-delay:2.28s}
figure.r4fig .hero .lede{animation-delay:2.42s}
figure.r4fig .hero .act{animation-delay:2.56s}
@keyframes rise{from{opacity:0;transform:translateY(.7rem)}to{opacity:1;transform:none}}
figure.r4fig .reveal{opacity:0;transform:translateY(.9rem);
  transition:opacity .55s ease-out,transform .55s cubic-bezier(.2,.7,.3,1)}
figure.r4fig .reveal.on{opacity:1;transform:none}
figure.r4fig .reveal.d1{transition-delay:.10s}
figure.r4fig .reveal.d2{transition-delay:.20s}
figure.r4fig .reveal.d3{transition-delay:.30s}
@media(prefers-reduced-motion:reduce){figure.r4fig .mark .bar,figure.r4fig .hero .wm,figure.r4fig .hero h1,figure.r4fig .hero .lede,figure.r4fig .hero .act{animation:none}
figure.r4fig .mark .thread{animation:none;opacity:0}
figure.r4fig .reveal{opacity:1;transform:none;transition:none}}
figure.r4fig .model{margin-top:var(--s4);max-width:36rem;--u:3rem;--p:2.25rem}
figure.r4fig .mrow{margin-bottom:var(--s4)}
figure.r4fig .mrow .who{font-size:var(--t-small);color:var(--ink-soft);margin-bottom:.5rem}
figure.r4fig .line{display:flex;align-items:center;gap:.6rem;margin-bottom:.3rem}
figure.r4fig .line .lab{flex:none;width:4rem;font-size:var(--t-small);color:var(--ink-soft);
  text-align:right}
figure.r4fig .bars{display:flex;border-radius:var(--r);overflow:hidden;
  outline:1.5px solid var(--ink);outline-offset:-1.5px}
figure.r4fig .bars u{display:block;width:var(--u);height:1.9rem;background:var(--bar);
  text-decoration:none;box-shadow:inset -1px 0 0 rgba(31,41,51,.34)}
figure.r4fig .bars u:last-child{box-shadow:none}
figure.r4fig .bars u.change{width:var(--p);background:var(--change)}
figure.r4fig .gaprow{display:flex;align-items:center;gap:.5rem}
figure.r4fig .gaprow i{display:block;height:.375rem;border-radius:var(--r);background:var(--gap);
  margin-left:var(--skip);width:var(--span);
  box-shadow:inset 0 0 0 1px var(--ink)}
figure.r4fig .gaprow b{font-size:var(--t-small);color:var(--ink);font-weight:700}
figure.r4fig .gaplab{font-size:var(--t-small);color:var(--ink-soft);margin-top:var(--s2);
  max-width:44ch}
figure.r4fig .gaplab b{color:var(--ink);font-weight:700}
@media(max-width:560px){figure.r4fig .model{--u:2.1rem;--p:1.6rem}
figure.r4fig .line .lab{width:3.2rem}}
figure.r4fig .steps{counter-reset:step;margin-top:var(--s4)}
figure.r4fig .step{display:grid;grid-template-columns:2rem minmax(0,1fr);gap:var(--s2);
  padding:var(--s3) 0;border-top:1px solid var(--rule)}
figure.r4fig .step:first-child{border-top:none}
figure.r4fig .step .n{font-size:var(--t-small);color:var(--ink-soft);font-weight:700}
figure.r4fig .step p{max-width:44ch}
figure.r4fig .step .model{margin-top:var(--s2)}
figure.r4fig .ladder{margin-top:var(--s4);max-width:34rem}
figure.r4fig .rung{border-top:1px solid var(--rule);padding:var(--s2) 0}
figure.r4fig .rung .q{font-weight:700}
figure.r4fig .rung .w{font-size:var(--t-small);color:var(--ink-soft);margin-top:.3rem}
figure.r4fig .rung .w.g1{opacity:.62}
figure.r4fig .rung .w.g2{opacity:.34}
figure.r4fig .rung .w.none{color:var(--open)}
figure.r4fig .crumb{font-size:var(--t-small);color:var(--ink-soft);display:flex;gap:.45rem;
  flex-wrap:wrap;padding-top:var(--s3)}
figure.r4fig .crumb a{font-weight:700}
figure.r4fig .crumb .sep{color:var(--open)}
figure.r4fig .type-list a,figure.r4fig .crumb a,figure.r4fig a.hname{color:var(--ink);text-decoration:underline;
  text-decoration-thickness:1px;text-underline-offset:3px;
  text-decoration-color:rgba(14,42,71,.28);
  transition:color 160ms ease,text-decoration-color 160ms ease}
figure.r4fig .type-list a:hover,figure.r4fig .crumb a:hover,figure.r4fig a.hname:hover{color:var(--navy);
  text-decoration-color:var(--navy)}
@media(prefers-reduced-motion:reduce){figure.r4fig .type-list a,figure.r4fig .crumb a,figure.r4fig a.hname{transition:none}}
figure.r4fig .lesson{padding-top:var(--s3)}
figure.r4fig .lesson h1{font-size:var(--t-display);max-width:22ch;font-weight:800;letter-spacing:-.02em}
figure.r4fig .qbox{font-size:var(--t-lead);max-width:52ch;margin-top:var(--s3)}
figure.r4fig .vid-frame{aspect-ratio:16/9;background:var(--navy);border-radius:var(--r);
  overflow:hidden;max-width:44rem;margin-top:var(--s3);display:flex;
  align-items:center;justify-content:center;color:#8FA6BC;font-size:var(--t-small)}
figure.r4fig .vid-frame video{width:100%;height:auto;background:var(--navy)}
figure.r4fig .h{font-size:var(--t-small);font-weight:700;color:var(--ink-soft);
  margin-top:var(--s5);margin-bottom:var(--s1)}
figure.r4fig .work{list-style:none;max-width:34rem}
figure.r4fig .work li{padding:.5rem 0;border-bottom:1px solid var(--rule)}
figure.r4fig .work li.locked{color:var(--ink-soft)}
figure.r4fig .mistake{max-width:46ch;color:var(--ink)}
figure.r4fig .mistake b{font-weight:800}
figure.r4fig .seam{border-top:1px solid var(--rule);margin-top:var(--s4);padding-top:var(--s3);
  max-width:34rem}
figure.r4fig .seam p{font-size:var(--t-small);color:var(--ink-soft);max-width:44ch}
figure.r4fig .next{display:flex;gap:var(--s3);flex-wrap:wrap;margin-top:var(--s2)}
figure.r4fig .next a{font-weight:700}
figure.r4fig .next a:hover{color:var(--navy);text-decoration:underline;text-underline-offset:3px}
figure.r4fig footer{border-top:1px solid var(--rule);padding:var(--s5) 0 var(--s4);
  font-size:var(--t-small);color:var(--ink)}
figure.r4fig .footer-brand{margin-bottom:2.5rem}
figure.r4fig .footer-brand .wordmark{display:inline-block;font-size:1.75rem;line-height:1.2}
figure.r4fig .footer-tagline{margin-top:.6rem;color:var(--ink-soft)}
figure.r4fig .footer-columns{display:grid;grid-template-columns:1.35fr 1fr .8fr .7fr 1.45fr;
  gap:2rem 1.5rem;align-items:start}
figure.r4fig .footer-group{min-width:0}
figure.r4fig .footer-label{font-size:.75rem;font-weight:800;letter-spacing:.09em;
  text-transform:uppercase;color:var(--ink-soft);margin-bottom:.75rem}
figure.r4fig .footer-links{list-style:none;display:grid;gap:.25rem}
figure.r4fig .footer-links a,figure.r4fig .footer-contact{display:inline-flex;align-items:center;gap:.6rem;
  min-height:2.25rem;padding:.25rem 0;font-weight:700;line-height:1.5}
figure.r4fig .footer-links a:hover,figure.r4fig .footer-contact:hover{color:var(--navy);
  text-decoration:underline;text-underline-offset:4px}
figure.r4fig .footer-social-mark{width:1.125rem;height:1.125rem;flex:none;fill:currentColor}
figure.r4fig .footer-contact{margin-top:.75rem;overflow-wrap:anywhere;max-width:100%}
figure.r4fig .footer-bottom{border-top:1px solid var(--rule);margin-top:2.5rem;
  padding-top:1.5rem;color:var(--ink-soft);font-size:.8125rem;line-height:1.7}
figure.r4fig .footer-copyright{margin-top:.5rem}
@media(max-width:900px){figure.r4fig .footer-columns{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:640px){figure.r4fig footer{padding:2.5rem 0 2rem}
figure.r4fig .footer-columns{grid-template-columns:minmax(0,1fr);gap:1.5rem}
figure.r4fig .footer-brand{margin-bottom:2rem}
figure.r4fig .footer-label{margin-bottom:.5rem}
figure.r4fig .footer-links a,figure.r4fig .footer-contact{min-height:2.75rem}
figure.r4fig .footer-bottom{margin-top:2rem}}
@media(max-width:640px){figure.r4fig h1{font-size:2.1rem}
figure.r4fig .hero h1{max-width:none}}
figure.r4fig .navmenu{display:none}
@media(max-width:480px){figure.r4fig .mainnav a:not(.go){display:none}
figure.r4fig .top .frame{gap:var(--s2)}
figure.r4fig .navmenu{display:block;position:relative}
figure.r4fig .navmenu>summary{list-style:none;font-weight:700;color:var(--ink-soft);
    padding:.45rem .15rem}
figure.r4fig .navmenu>summary::-webkit-details-marker{display:none}
figure.r4fig .navmenu>summary:hover,figure.r4fig .navmenu[open]>summary{color:var(--navy)}
figure.r4fig .navpanel{position:absolute;right:0;top:calc(100% + .7rem);z-index:30;
    display:flex;flex-direction:column;gap:var(--s2);min-width:9.5rem;
    background:var(--paper);border:1px solid var(--rule);
    border-radius:var(--r);padding:var(--s2) var(--s3);
    box-shadow:0 12px 30px rgba(14,42,71,.16)}
figure.r4fig .navpanel a{font-weight:700;color:var(--ink)}
figure.r4fig .navpanel a:hover{color:var(--navy)}
figure.r4fig .top.on-navy .navmenu>summary{color:#9DB7CB}
figure.r4fig .top.on-navy .navmenu>summary:hover,figure.r4fig .top.on-navy .navmenu[open]>summary{color:#fff}}
figure.r4fig .lp{
  --d1:clamp(2.05rem,3.7vw,3rem);        
  --d2:clamp(1.5rem,2.5vw,2.05rem);      
  --d3:1.125rem;                         
  --band:clamp(3rem,5.5vw,4.75rem);      
  --e-out:cubic-bezier(.22,.9,.28,1);
  --mist:#E4EEF5;
  --on-navy:#9DB7CB;
  --green-light:#2FB37E;
  --paper-2:#F2EFE6;                     
  --line:#164EA5;                        
  --board:#FFFDFA;                       
  --sheet:#EAF1FF;                       
  --top-h:4.45rem;                       
}
figure.r4fig .lp .frame{max-width:66rem}
figure.r4fig .lp section{padding:var(--band) 0;border-bottom:1px solid var(--rule)}
figure.r4fig .lp section:last-of-type{border-bottom:0}
figure.r4fig .lp .g-2{background:var(--paper-2)}
figure.r4fig .lp .g-navy{background:var(--navy);color:var(--mist);border-bottom:0}
figure.r4fig .lp .g-navy h2{color:#fff}
figure.r4fig .lp .g-navy .tag{color:var(--on-navy)}
figure.r4fig .lp .g-navy .say{color:var(--on-navy)}
figure.r4fig .lp .g-navy :focus-visible{outline-color:#fff}
figure.r4fig .lp h1{font-size:var(--d1);font-weight:800;letter-spacing:-.03em;line-height:1.05;
  max-width:24ch;margin-top:var(--s1)}
figure.r4fig .lp h2{font-size:var(--d2);font-weight:800;letter-spacing:-.022em;line-height:1.1;
  max-width:26ch}
figure.r4fig .lp h3{font-size:var(--d3);font-weight:800;letter-spacing:-.015em}
figure.r4fig .lp .lede{font-size:clamp(1.0625rem,1.4vw,1.25rem);color:var(--ink-soft);
  max-width:52ch;margin-top:var(--s2)}
figure.r4fig .lp .say{font-size:var(--t-body);color:var(--ink-soft);max-width:56ch;
  margin-top:var(--s2)}
figure.r4fig .lp .level{font-size:var(--t-small);color:var(--ink-soft);max-width:56ch;
  margin-top:var(--s3);padding-top:var(--s2);
  border-top:1px solid var(--rule);font-weight:700}
figure.r4fig .lp .tag{display:flex;align-items:center;gap:.6rem;font-size:.8125rem;
  font-weight:800;letter-spacing:.07em;color:var(--ink-soft);
  margin-bottom:var(--s2)}
figure.r4fig .lp .tag:before{content:"";width:1.5rem;height:1px;background:currentColor;
  opacity:.55;flex:none}
figure.r4fig .lp .btn{display:inline-flex;align-items:center;gap:.5rem;background:var(--navy);
  color:var(--paper);border-radius:var(--r);padding:.78rem 1.4rem;font-weight:800;
  transition:background 200ms ease,transform 150ms var(--e-out)}
figure.r4fig .lp .btn:hover{background:#153f67;color:var(--paper)}
figure.r4fig .lp .btn:active{transform:scale(.98)}
figure.r4fig .lp .crumb{padding-top:var(--s3);padding-bottom:0}
figure.r4fig .lp-head{padding-top:var(--s3)}
figure.r4fig .lp-head .hd{display:grid;grid-template-columns:minmax(0,1fr) auto;
  gap:var(--s4);align-items:center}
figure.r4fig .chip{display:flex;flex-direction:column;width:13.5rem;
  background:var(--sheet);border:1px solid rgba(14,42,71,.09);
  border-radius:var(--r);padding:.9rem 1rem .25rem}
figure.r4fig .chip-h{font-weight:800;color:var(--navy);line-height:1.2}
figure.r4fig .chip-s{font-size:var(--t-small);color:var(--ink-soft);margin-top:.2rem}
figure.r4fig a.chip{text-decoration:none;color:inherit}
figure.r4fig a.chip:hover .chip-h{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
figure.r4fig .chip-go{font-size:var(--t-small);color:var(--ink-soft);margin-top:.2rem;
  font-weight:700}
figure.r4fig a.chip{transition:border-color 200ms ease,transform 150ms var(--e-out)}
figure.r4fig a.chip:hover{border-color:rgba(14,42,71,.34);transform:translateY(-.15rem)}
figure.r4fig a.chip:hover .chip-go{color:var(--navy)}
figure.r4fig .chip-v{display:block;width:100%;height:auto;margin-top:var(--s2)}
figure.r4fig .lp-film .mount{background:var(--paper);border-radius:var(--r);
  padding:clamp(.7rem,1.3vw,1.4rem);max-width:54rem;margin-top:var(--s3);
  box-shadow:0 22px 48px rgba(0,0,0,.30)}
figure.r4fig .lp-film video{display:block;width:100%;height:auto;aspect-ratio:16/9;
  background:var(--navy);border:1px solid var(--rule);border-radius:var(--r)}
figure.r4fig .sheet{position:relative;overflow:hidden;background:var(--sheet);
  border:1px solid rgba(14,42,71,.10);border-radius:var(--r);
  padding:clamp(1.15rem,2.4vw,1.75rem);margin-top:var(--s3)}
figure.r4fig .sheet .stem{font-size:clamp(1.125rem,1.6vw,1.3125rem);font-weight:400;
  line-height:1.5;color:var(--navy);max-width:46ch;position:relative;z-index:1}
figure.r4fig .sheet-v{position:absolute;right:.85rem;bottom:.7rem;width:7.5rem;
  height:auto;opacity:.85;pointer-events:none}
figure.r4fig .wbd{--wb-pad:var(--s3);--wb-tpad:var(--s3);
  background:var(--board);border:1px solid var(--rule);
  border-radius:var(--r);padding:var(--s3) var(--s3) 0;margin-top:var(--s3);
  box-shadow:0 1px 2px rgba(31,41,51,.05),0 6px 18px -12px rgba(31,41,51,.22)}
figure.r4fig .wb-tray{display:flex;align-items:center;justify-content:space-between;
  gap:var(--s2);flex-wrap:wrap;min-height:2.4rem;
  margin:var(--s3) calc(-1 * var(--s3)) 0;padding:.55rem var(--s3);
  border-top:1px solid var(--rule);
  background:linear-gradient(#FBF9F4,#F7F4EE);
  border-radius:0 0 var(--r) var(--r)}
figure.r4fig .wb-step{display:flex;align-items:center;gap:var(--s2);min-height:1.9rem}
figure.r4fig .wb-step:empty{min-height:0}
figure.r4fig .wb-next{display:inline-flex;align-items:center;gap:.5rem;background:var(--navy);
  color:var(--paper);border-radius:var(--r);padding:.42rem 1rem;font-weight:800;
  font-size:var(--t-small);transition:background 200ms ease}
figure.r4fig .wb-next:hover{background:#153A5E}
figure.r4fig .wb-next svg{display:block;width:9px;height:9px;flex:none}
figure.r4fig .wb-next.again svg{display:none}
figure.r4fig .wb-next svg path{stroke:currentColor;stroke-width:2;fill:none;
  stroke-linecap:round;stroke-linejoin:round}
figure.r4fig .wb-count{font-size:var(--t-micro);color:var(--ink-soft);
  font-variant-numeric:tabular-nums;white-space:nowrap}
figure.r4fig .wb-count[hidden]{display:none}
figure.r4fig .vtog{font-size:var(--t-micro);font-weight:800;color:var(--ink-soft);
  border:1px solid var(--rule);border-radius:var(--r);padding:.32rem .7rem;
  transition:color 180ms ease,border-color 180ms ease}
figure.r4fig .vtog:hover{color:var(--navy);border-color:var(--navy)}
figure.r4fig .vtog[aria-pressed="false"]{text-decoration:underline dashed;
  text-underline-offset:3px}
@media(prefers-reduced-motion:reduce){figure.r4fig .wb-step{display:none}}
figure.r4fig .wbd.side{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);
  column-gap:var(--s4);align-items:start}
figure.r4fig .wbd.side>.wf{grid-column:1;grid-row:1}
figure.r4fig .wbd.side>.wb-body{grid-column:2;grid-row:1}
figure.r4fig .wbd.side>.wb-tray{grid-column:1/-1;grid-row:2}
figure.r4fig .wbd .wf{margin:0 auto;max-width:38rem}
figure.r4fig .wbd.side .wf{max-width:none;margin:0}
figure.r4fig .wf svg{display:block;width:100%;height:auto}
figure.r4fig .wf-cell{fill:var(--bar);stroke:var(--ink);stroke-width:var(--fig-out)}
figure.r4fig .wf-val{fill:var(--ink);font-size:19px;font-weight:800;text-anchor:middle}
figure.r4fig .wf-name{fill:var(--ink-soft);font-size:16px;text-anchor:end}
figure.r4fig .wf-cnt{fill:var(--ink);font-size:16px;font-weight:700}
figure.r4fig .wf-total{fill:var(--ink);font-size:17px;font-weight:800;text-anchor:middle}
figure.r4fig .wf-brace{fill:none;stroke:var(--ink-soft);stroke-width:1.4}
figure.r4fig .wf-ring{fill:none;stroke:var(--line);stroke-width:2}
figure.r4fig .wf-grp{fill:none;stroke:var(--ink);stroke-width:1.5;stroke-dasharray:5 3}
figure.r4fig .wf-unit{fill:var(--line);font-size:14px;font-weight:800;text-anchor:middle}
figure.r4fig .wf-ans{fill:var(--line);font-size:18px;font-weight:800}
figure.r4fig .wf-ask{fill:var(--ink-soft);font-size:18px;font-weight:800}
figure.r4fig .wf .st{opacity:1}
figure.r4fig .wf.anim .st{opacity:0;transition:opacity .40s ease var(--d,0s)}
figure.r4fig .wf.anim .st.on{opacity:1}
figure.r4fig .wf.anim .st.g{transform:scaleX(.001);transform-origin:left center;
  transform-box:fill-box;
  transition:opacity .34s ease var(--d,0s),
    transform .46s cubic-bezier(.2,.7,.3,1) var(--d,0s)}
figure.r4fig .wf.anim .st.cp{transform:translate(var(--mx),var(--my));
  transition:opacity .26s ease var(--d,0s),
    transform .58s cubic-bezier(.2,.7,.3,1) var(--d,0s)}
figure.r4fig .wf.anim .st.g.on,figure.r4fig .wf.anim .st.cp.on{transform:none}
figure.r4fig .wf.anim .st[data-pt]{transition:opacity .22s ease}
figure.r4fig .wf svg .pp{transition:opacity .34s ease}
figure.r4fig .wf.litmode .pp{opacity:.15}
figure.r4fig .wf.litmode .pp.litp{opacity:1}
figure.r4fig .wk{list-style:none;border-left:1px solid var(--rule);padding-left:1.15rem}
figure.r4fig .wk li{position:relative;padding:.72rem .85rem;border-radius:var(--r);
  font-size:clamp(1.0625rem,1.35vw,1.25rem);font-weight:700;color:var(--ink);
  transition:background 240ms ease,color 240ms ease}
figure.r4fig .wk li+li{margin-top:.4rem}
figure.r4fig .wk li:before{content:"";position:absolute;left:calc(-1.15rem - 3.5px);
  top:1.3rem;width:7px;height:7px;background:var(--rule);
  transition:background 240ms ease}
figure.r4fig .wk li.on{background:#EDF3FF;color:var(--line);font-weight:800}
figure.r4fig .wk li.on:before{background:var(--line)}
figure.r4fig .wbd.stepping .wk li,figure.r4fig .wbd.stepping .ans{visibility:hidden}
figure.r4fig .wbd.stepping .wk li.lit,figure.r4fig .wbd.stepping .ans.lit{
  visibility:visible}
@media(prefers-reduced-motion:no-preference){figure.r4fig .wbd.stepping .wk li.lit,figure.r4fig .wbd.stepping .ans.lit{
    animation:pland 300ms var(--e-out) both}}
@keyframes pland{from{opacity:0;transform:translateY(.3rem)}
  to{opacity:1;transform:none}}
figure.r4fig .wk.anim li{opacity:.24;transition:opacity .34s ease}
figure.r4fig .wk.anim li.seen{opacity:1}
figure.r4fig .ans{margin-top:var(--s3);font-weight:700;color:var(--ink);
  font-size:var(--t-lead)}
figure.r4fig .ans b{color:var(--line);font-weight:800}
figure.r4fig .tryrow{display:flex;align-items:center;gap:.7rem;flex-wrap:wrap;
  margin-top:var(--s3)}
figure.r4fig .tryrow label{font-weight:800}
figure.r4fig .tryrow input{width:6.5rem;border:1px solid #C6D0D6;border-radius:var(--r);
  padding:.6rem .7rem;font:inherit;font-weight:800;font-size:1.125rem;
  background:var(--paper)}
figure.r4fig .tryrow input:focus{border-color:var(--navy)}
figure.r4fig .tryrow button{background:var(--navy);color:#fff;border-radius:var(--r);
  padding:.68rem 1.1rem;font-weight:800;
  transition:background 200ms ease,transform 150ms var(--e-out)}
figure.r4fig .tryrow button:hover{background:#153f67}
figure.r4fig .tryrow button:active{transform:scale(.98)}
figure.r4fig .tryrow .unit{color:var(--ink-soft);font-weight:700}
figure.r4fig .fb{margin-top:var(--s3);border-radius:var(--r);padding:.9rem 1rem;
  background:#FDF3E0;color:#6B4A10;font-weight:700;max-width:52rem;
  border-left:3px solid var(--gap)}
figure.r4fig .fb.good{background:#E9F4EE;color:#0E6545;border-left-color:var(--green)}
figure.r4fig .fb:empty{display:none}
figure.r4fig .nojs-note{font-size:var(--t-small);color:var(--ink-soft);margin-top:var(--s2)}
figure.r4fig .nojs-note{display:none}
figure.r4fig .lp-try .wbd.wait{display:none}
figure.r4fig .lrungs{list-style:none;margin-top:var(--s4);counter-reset:none}
figure.r4fig .lrung{display:grid;grid-template-columns:12rem 11rem minmax(0,1fr);
  gap:var(--s3) var(--s4);align-items:start;
  padding:var(--s3) 0 var(--s3) calc(var(--k) * 1.4rem);
  border-top:1px solid var(--rule);position:relative}
figure.r4fig .lrungs li:last-child{border-bottom:1px solid var(--rule)}
figure.r4fig .lrung:before{content:"";position:absolute;left:calc(var(--k) * 1.4rem - .7rem);
  top:0;bottom:0;width:1px;background:var(--rule)}
figure.r4fig .lrung:first-child:before{display:none}
figure.r4fig .lrung-name{font-weight:800;color:var(--navy);line-height:1.25}
figure.r4fig .lrung-note{font-size:var(--t-small);color:var(--ink-soft);margin-top:.3rem;
  max-width:26ch}
figure.r4fig .lrung-chip{display:inline-block;margin-top:.6rem;padding-top:.35rem;
  border-top:1px solid var(--rule);font-size:var(--t-micro);font-weight:800;
  letter-spacing:.06em;color:var(--ink-soft)}
figure.r4fig .mini{display:block;width:100%;height:auto;max-width:11rem}
figure.r4fig .mc{stroke:var(--ink);stroke-width:1.2}
figure.r4fig .mbox{fill:none;stroke:var(--line);stroke-width:1.6}
figure.r4fig .mink{stroke:var(--ink-soft);stroke-width:1.2}
figure.r4fig .mlab{fill:var(--ink);font-size:12px;font-weight:800}
figure.r4fig .lrung .sheet{margin-top:0;padding:.9rem 4.3rem .9rem 1rem}
figure.r4fig .lrung .sheet .stem{font-size:var(--t-body);font-weight:700;line-height:1.5;
  color:var(--ink);max-width:48ch}
figure.r4fig .lrung .sheet-v{width:calc(3.6rem - var(--k) * .22rem);right:.15rem;
  bottom:-.15rem;opacity:.9}
figure.r4fig .ladder-foot{margin-top:var(--s3);font-size:var(--t-body);color:var(--ink-soft);
  max-width:54ch}
figure.r4fig .glimpse{margin-top:var(--s4)}
figure.r4fig .glimpse .mat{position:relative;background:var(--paper);
  border:1px solid var(--rule);
  border-radius:var(--r);padding:clamp(.45rem,.75vw,.7rem);
  box-shadow:0 1px 2px rgba(31,41,51,.05),0 18px 42px -26px rgba(31,41,51,.34)}
figure.r4fig .glimpse img{display:block;width:100%;height:auto;border-radius:2px;
  border:1px solid var(--rule)}
figure.r4fig .glimpse .gtag{position:absolute;top:0;left:clamp(1rem,3vw,2rem);
  transform:translateY(-50%);background:var(--paper);
  border:1px solid var(--rule);border-radius:var(--r);
  padding:.28rem .7rem;font-size:var(--t-micro);font-weight:800;
  letter-spacing:.09em;text-transform:uppercase;color:var(--ink-soft)}
figure.r4fig .gfoot{display:flex;flex-wrap:wrap;align-items:center;
  gap:var(--s2) var(--s4);justify-content:space-between;margin-top:var(--s3)}
figure.r4fig .glimpse figcaption{font-size:var(--t-small);color:var(--ink-soft);
  font-weight:700;max-width:46ch}
figure.r4fig .lp-cta .btn{flex:none}
figure.r4fig .gfoot.bare{margin-top:var(--s4)}
figure.r4fig .types{margin-top:var(--s4);padding-top:var(--s3);
  border-top:1px solid var(--rule)}
figure.r4fig .lp .types h3{font-size:var(--t-micro);font-weight:800;letter-spacing:.07em;
  color:var(--ink-soft)}
figure.r4fig .type-list{list-style:none;margin-top:var(--s2);columns:3;
  column-gap:var(--s4);font-size:var(--t-small);color:var(--ink-soft)}
figure.r4fig .type-list li{break-inside:avoid;padding:.24rem 0;line-height:1.4}
figure.r4fig .type-list li.here{font-weight:800;color:var(--navy)}
figure.r4fig .type-list .now{font-size:var(--t-micro);font-weight:800;letter-spacing:.06em;
  color:var(--ink-soft);white-space:nowrap;margin-left:.3rem}
figure.r4fig .nx-grid{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:var(--s4);
  align-items:start;margin-top:var(--s3)}
figure.r4fig .nx{list-style:none;max-width:46rem}
figure.r4fig .nx li{display:flex;gap:var(--s3);align-items:baseline;flex-wrap:wrap;
  padding:.9rem 0;border-top:1px solid var(--rule)}
figure.r4fig .nx li:last-child{border-bottom:1px solid var(--rule)}
figure.r4fig .nx .role{flex:none;width:12.5rem;font-size:var(--t-small);color:var(--ink-soft);
  font-weight:800;letter-spacing:.05em}
figure.r4fig .nx .name{font-weight:700}
figure.r4fig .nx a{font-weight:800;color:var(--navy);text-decoration:underline;
  text-underline-offset:4px;text-decoration-color:rgba(14,42,71,.28)}
figure.r4fig .nx a:hover{text-decoration-color:currentColor}
figure.r4fig .nx li.nx-rel{display:block}
figure.r4fig .nx-why{display:block;margin-top:.25rem;font-size:var(--t-small);
  color:var(--ink-soft);line-height:1.45;max-width:52ch}
figure.r4fig .related-methods{margin-top:var(--s3)}
figure.r4fig .related-methods .tag{margin-bottom:var(--s1)}
figure.r4fig .lp footer{border-top:1px solid var(--rule)}
@media(max-width:980px){figure.r4fig .lp .frame{max-width:56rem}
figure.r4fig .wbd.side{grid-template-columns:1fr;row-gap:var(--s3)}
figure.r4fig .wbd.side>.wf{grid-column:1;grid-row:1}
figure.r4fig .wbd.side>.wb-body{grid-column:1;grid-row:2}
figure.r4fig .wbd.side>.wb-tray{grid-column:1;grid-row:3}
figure.r4fig .lrung{grid-template-columns:11rem minmax(0,1fr)}
figure.r4fig .lrung .mini{max-width:9.5rem}}
@media(max-width:760px){figure.r4fig .lp-head .hd,figure.r4fig .nx-grid{grid-template-columns:1fr}
figure.r4fig .nx .role{width:100%}
figure.r4fig .chip{width:100%;max-width:20rem}
figure.r4fig .type-list{columns:2}
figure.r4fig .gfoot{justify-content:flex-start}
figure.r4fig .lrung{grid-template-columns:1fr;gap:var(--s2);
    padding-left:calc(var(--k) * .55rem)}
figure.r4fig .lrung:before{left:calc(var(--k) * .55rem - .28rem)}
figure.r4fig .lrung .mini{max-width:11rem}
figure.r4fig .lrung .sheet-v{width:2.6rem}
figure.r4fig .wf-val{font-size:22px}
figure.r4fig .wf-name,figure.r4fig .wf-cnt{font-size:19px}
figure.r4fig .wf-total,figure.r4fig .wf-ans,figure.r4fig .wf-ask{font-size:20px}
figure.r4fig .wf-unit{font-size:17px}
figure.r4fig .wbd{--wb-pad:var(--s2);--wb-tpad:var(--s2);padding:var(--s2) var(--s2) 0}
figure.r4fig .wb-tray{margin:var(--s2) calc(-1 * var(--s2)) 0;padding:.55rem var(--s2)}}
@media(max-width:700px){figure.r4fig .sheet-v{display:none}}
@media(max-width:620px){figure.r4fig .lp-head .chip{display:none}
figure.r4fig .type-list{columns:1}
figure.r4fig .lp-cta .btn{width:100%;justify-content:center}}
@media(prefers-reduced-motion:reduce){figure.r4fig .wf svg .pp,figure.r4fig .wk li,figure.r4fig .wk li:before{transition:none}
figure.r4fig .wf.litmode .pp{opacity:1}
figure.r4fig .lp .btn,figure.r4fig .wb-next,figure.r4fig .tryrow button,figure.r4fig a.chip{transition:none}
figure.r4fig .wf.anim .st{opacity:1;transition:none;transform:none}
figure.r4fig .wk.anim li{opacity:1;transition:none}}
figure.r4fig .wbd{--wb-fr:11px;
  --rail-lit:#F2F5F9;      
  --rail:#E1E7EE;          
  --rail-dim:#C8D1DC;      
  --rail-rebate:#A8B6C6;   
  border:var(--wb-fr) solid transparent;
  border-radius:calc(var(--r) + var(--wb-fr));
  overflow:visible;
  background-color:var(--rail);
  background-image:
    linear-gradient(var(--board,#FFFDFA) 0 100%),
    linear-gradient(90deg,var(--rail-lit) 0,var(--rail) 46%,
      var(--rail-dim) 88%,var(--rail-rebate) 100%),
    linear-gradient(270deg,var(--rail-lit) 0,var(--rail) 46%,
      var(--rail-dim) 88%,var(--rail-rebate) 100%),
    linear-gradient(180deg,var(--rail-lit) 0,var(--rail) 42%,
      var(--rail-dim) 86%,var(--rail-rebate) 100%);
  background-clip:padding-box,border-box,border-box,border-box;
  background-origin:padding-box,border-box,border-box,border-box;
  background-size:auto,var(--wb-fr) 100%,var(--wb-fr) 100%,
    calc(100% - var(--wb-fr) * 2) var(--wb-fr);
  background-position:0 0,left top,right top,var(--wb-fr) top;
  background-repeat:no-repeat;
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.6),
    0 0 0 1px rgba(14,42,71,.15),
    0 1px 1px rgba(14,42,71,.05),
    0 16px 30px -18px rgba(14,42,71,.45)}
figure.r4fig .wb-tray{margin-left:calc(-1 * (var(--wb-pad,0px) + var(--wb-fr)));
  margin-right:calc(-1 * (var(--wb-pad,0px) + var(--wb-fr)));
  margin-bottom:calc(-1 * var(--wb-fr));
  padding-left:calc(var(--wb-tpad,0px) + var(--wb-fr));
  padding-right:calc(var(--wb-tpad,0px) + var(--wb-fr));
  border-top:0;
  border-radius:0 0 calc(var(--r) + var(--wb-fr))
    calc(var(--r) + var(--wb-fr));
  
  background:linear-gradient(180deg,
    var(--rail-rebate) 0,var(--rail-rebate) 1px,
    #B9C4D2 1px,#CBD5E0 9px,
    var(--rail-lit) 11px,#E9EEF4 14px,
    var(--rail) 26px,var(--rail) calc(100% - 6px),
    var(--rail-dim) 100%);
  box-shadow:inset 0 4px 6px -4px rgba(14,42,71,.5),
    inset 0 -1px 0 rgba(14,42,71,.14)}
figure.r4fig .wbd svg[data-wb-phone]{display:none}
figure.r4fig .wbd[data-wb-fit] .svfig,figure.r4fig .wbd[data-wb-fit] .pfig{
  max-width:var(--wb-desktop-fig-width,none)}
figure.r4fig .wbd[data-wb-fit] .svfig svg,figure.r4fig .wbd[data-wb-fit] .pfig svg,figure.r4fig .wbd[data-wb-fit] .wf svg{max-height:var(--wb-fig-cap);width:100%;height:auto;
  margin-left:auto;margin-right:auto}
@media(max-width:700px){figure.r4fig .demo-grid .wbd.stepping .wk li:not(.lit),figure.r4fig .demo-grid .wbd.stepping .ans:not(.lit){display:none}
figure.r4fig .mainnav .go .go-l{display:none}
figure.r4fig .mainnav .go .go-s{display:inline}
figure.r4fig .wbd .vtog,figure.r4fig .wbd .wb-next{white-space:nowrap}
figure.r4fig .wbd[data-wb-fit] .svfig,figure.r4fig .wbd[data-wb-fit] .pfig,figure.r4fig .wbd[data-wb-fit] .wf{width:100%;min-width:0;max-width:none!important}
figure.r4fig .wd-runway.driven .wbd[data-wb-fit] .wb-body .svfig svg,figure.r4fig .wbd[data-wb-fit] .svfig svg,figure.r4fig .wbd[data-wb-fit] .pfig svg,figure.r4fig .wbd[data-wb-fit] .wf svg{width:100%;max-width:none!important;
    max-height:none}
figure.r4fig .wbd[data-wb-fit] svg text[data-wb-fs]{
    font-size:var(--wb-phone-fs)!important}
figure.r4fig .wbd svg[data-wb-phone]{display:block}
figure.r4fig .wbd svg[data-wb-desk]{display:none}}
figure.r4fig .cfig .cspan{stroke:var(--ink);stroke-width:1.5;fill:none}
figure.r4fig .cfig .cspanh{fill:var(--ink);stroke:none}
figure.r4fig .cfig text.cspant{font-size:12px;font-weight:800;fill:var(--ink)}
figure.r4fig .cfig text.cspantcat{font-size:13px}
figure.r4fig .pfig{margin:0 0 var(--s2)}
figure.r4fig .pfig svg{display:block;width:100%;height:auto}
figure.r4fig .pfig svg.cfig[data-wb-phone],figure.r4fig svg.cfig[data-wb-phone]{display:none}
@media(max-width:700px){figure.r4fig .pfig svg.cfig[data-wb-phone],figure.r4fig svg.cfig[data-wb-phone]{
    display:block;width:100%;height:auto}
figure.r4fig .pfig svg.cfig[data-wb-desk],figure.r4fig svg.cfig[data-wb-desk]{display:none}}
figure.r4fig .cfig .cbar{fill:var(--bar)}
figure.r4fig .cfig .cbaro{fill:var(--open);stroke:var(--bar);stroke-width:1.6}
figure.r4fig .cfig .cbarfound.rvon~.cqmark,figure.r4fig .cfig .cdotfound.rvon~.cqmark{
  visibility:hidden}
figure.r4fig .cfig .cln{fill:none;stroke:var(--bar);stroke-width:2.4;
  stroke-linejoin:round;stroke-linecap:round}
figure.r4fig .cfig .cdot{fill:var(--bar)}
figure.r4fig .cfig .cmk{fill:none;stroke:var(--bar);stroke-width:2.2;
  stroke-linecap:round}
figure.r4fig .cfig .cg,figure.r4fig .cfig .cgln{stroke:var(--rule);stroke-width:1}
figure.r4fig .cfig .cgm{stroke:var(--rule);stroke-width:1;opacity:.55}
figure.r4fig .cfig .cax-l{stroke:var(--ink-soft);stroke-width:1.4}
figure.r4fig .cfig text,figure.r4fig .cpiefig text{font-family:inherit;fill:var(--ink)}
figure.r4fig .cfig .cax{font-size:13px;fill:var(--ink-soft)}
figure.r4fig .cfig .cttl{font-size:13px;fill:var(--ink-soft)}
figure.r4fig .cfig .cval{font-size:15px;font-weight:700}
figure.r4fig .cfig .cq{font-size:17px;font-weight:700;fill:var(--ink-soft)}
figure.r4fig .cpiefig .cpie{fill:var(--bar);stroke:var(--paper);stroke-width:1.5}
figure.r4fig .cpiefig .copen{fill:var(--open);stroke:var(--paper);stroke-width:1.5}
figure.r4fig .cpiefig .crt{fill:none;stroke:var(--paper);stroke-width:1.6}
figure.r4fig .cpiefig .crt.crto{stroke:var(--ink)}
figure.r4fig .cpiefig .clead{fill:none;stroke:var(--ink-soft);stroke-width:1}
figure.r4fig .cpiefig .clabi{font-size:15px;fill:var(--paper)}
figure.r4fig .cpiefig .clabo{font-size:15px;fill:var(--ink)}
figure.r4fig .cpiefig .cvalp{font-weight:700}
figure.r4fig .cfigtab{border-collapse:collapse;margin:0 0 var(--s2);
  font-size:var(--t-body);color:var(--ink)}
figure.r4fig .cfigtab th,figure.r4fig .cfigtab td{border:1px solid var(--rule);
  padding:.4rem var(--s2);text-align:left}
figure.r4fig .cfigtab thead th{font-weight:700}
figure.r4fig .cfigtab tbody th{font-weight:400;color:var(--ink-soft)}
figure.r4fig .cfigtab td{font-weight:700}
figure.r4fig .cfigtab .cqstack{display:inline-grid;justify-items:start}
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