/* A reading spine, open chapters and concrete uses. */
.about-section{--about-card:#e5e6d9;--about-dark:#1d2518;--about-light:#eeece1;--about-dark-muted:#c1c8b5;padding-block:64px 56px;scroll-margin-top:16px}
.about-meta{color:var(--muted);padding-bottom:25px;border-bottom:1px solid var(--line)}
.about-meta>.mono{display:block!important}
.about-signature{display:inline-flex;gap:18px;align-items:center;min-height:44px;font-size:.875rem;color:var(--ink)}
.about-signature>span{transition:transform .25s var(--ease)}
.about-signature:hover>span{transform:translate(3px,3px)}
.about-intro{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,6vw,90px);align-items:center;padding:42px 0 54px}
.about-intro h2{font-size:clamp(3.7rem,7.1vw,6.8rem);font-weight:500;line-height:.96;letter-spacing:-.07em}
.about-question{color:var(--ink);display:inline-block;background:var(--lime);padding:0 .12em .06em;margin-left:.08em;border-radius:8px;transform:rotate(7deg)}
.about-intro-copy{max-width:540px}
.about-intro-statement{font-size:clamp(1.45rem,2.4vw,2.2rem);line-height:1.3;letter-spacing:-.035em}
.about-intro-statement>span{box-shadow:inset 0 -.2em 0 var(--lime)}
.about-intro-copy>p+p{font-size:1rem;line-height:1.7;color:var(--muted);margin-top:20px;max-width:50ch}
.about-story{display:grid;grid-template-columns:minmax(220px,.75fr) minmax(0,2fr);gap:clamp(36px,6.5vw,100px);align-items:start;border-top:1px solid var(--line)}
.about-spine{position:sticky;top:114px;align-self:start;padding-top:30px;min-width:0}
.about-spine-heading{display:flex;justify-content:space-between;gap:12px;color:var(--muted);padding-bottom:18px}
.about-position{font-variant-numeric:tabular-nums}
.about-chapters{display:flex;flex-direction:column}
.about-chapters>a{position:relative;display:flex;align-items:center;gap:15px;min-height:79px;padding:14px 10px 14px 2px;border-top:1px solid var(--line);transition:background .25s,color .25s,padding .3s var(--ease);font-size:.9375rem;line-height:1.35}
.about-chapters>a>.mono{font-size:.6875rem;align-self:flex-start;padding-top:4px;color:var(--muted)}
.about-chapters small{display:block;font-size:.75rem;line-height:1.5;color:var(--muted);margin-top:5px}
.about-nav-arrow{margin-left:auto;font-size:1.1rem;opacity:0;transition:opacity .2s,transform .25s}
.about-chapters>a:hover .about-nav-arrow,.about-chapters>a[aria-current=location] .about-nav-arrow{opacity:1}
.about-chapters>a:hover{background:var(--about-card);padding-left:10px}
.about-chapters>a[aria-current=location]{background:var(--lime);color:#1d1f18;padding-left:12px;border-color:transparent;border-radius:5px}
.about-chapters>a[aria-current=location] :is(small,.mono){color:#48562b}
.about-nav-short{display:none}
.about-spine-foot{border-top:1px solid var(--line);padding-top:25px;display:flex;align-items:center;gap:14px}
.about-spine-foot svg{width:27px;height:27px;fill:currentColor;stroke:none;flex:none}
.about-spine-foot p{color:var(--muted);font-size:.8125rem;line-height:1.6}
.about-pages{min-width:0}
.about-chapter{padding-block:36px 42px;scroll-margin-top:24px;position:relative;min-width:0}
.about-chapter+.about-chapter{border-top:1px solid var(--line)}
.about-chapter-meta{display:flex;justify-content:space-between;align-items:center;gap:20px;color:var(--muted);margin-bottom:22px}
.about-chapter-meta>span:last-child{font-size:1.5rem;line-height:1}
.about-chapter h3{font-size:clamp(2.05rem,3.25vw,3.3rem);font-weight:500;line-height:1.08;letter-spacing:-.05em;text-wrap:balance}
.about-body{font-size:1rem;line-height:1.75;color:var(--muted);margin-top:23px;max-width:69ch}
.about-observations{margin:25px 0 0}
.about-observations>div{display:flex;align-items:flex-start;gap:18px;padding:17px 0;border-top:1px solid var(--line)}
.about-observations>div>span{font-size:1.25rem;color:var(--muted)}
.about-observations p{font-size:.9375rem;line-height:1.65;color:var(--muted)}
.about-observations strong{display:block;color:var(--ink);font-size:1.0625rem;line-height:1.4;margin-bottom:4px}
.about-origin-end{margin-top:8px;padding:20px 23px;border-left:3px solid var(--ink);background:var(--about-card);font-size:1rem;line-height:1.7}
.about-convictions{border:1px solid #3d4a31!important;background:var(--about-dark);color:var(--about-light);border-radius:20px;padding:clamp(25px,3.1vw,44px);margin-bottom:8px}
.about-convictions .about-chapter-meta{color:var(--about-dark-muted)}
.about-convictions h3>span{color:var(--lime)}
.about-convictions .about-body{color:var(--about-dark-muted)}
.about-principles{display:grid;grid-template-columns:1fr 1fr;gap:27px 30px;margin-top:30px}
.about-principles>div{border-top:1px solid #4a583e;padding-top:20px}
.about-principles .mono{color:var(--lime);font-size:.6875rem;letter-spacing:.06em}
.about-principles h4{font-size:1.17rem;line-height:1.35;letter-spacing:-.02em;font-weight:500;margin:11px 0 10px}
.about-principles p{font-size:.9375rem;line-height:1.7;color:var(--about-dark-muted)}
.about-convictions+.about-vocation{border-top:0}
.about-vocation h3{max-width:24ch}
.about-vocation h3>span{background:linear-gradient(transparent 79%,var(--lime) 79%,var(--lime) 96%,transparent 96%)}
.about-audiences{margin:25px 0 0}
.about-audiences>div{display:grid;grid-template-columns:1fr 1.5fr;gap:24px;border-top:1px solid var(--line);padding:17px 0}
.about-audiences dt{font-size:1rem;line-height:1.5;font-weight:500}
.about-audiences dd{margin:0;color:var(--muted);font-size:.9375rem;line-height:1.65}
.about-product h3>span{color:var(--muted)}
.about-usecases{margin-top:27px;border:1px solid var(--line);border-radius:16px;background:var(--about-card);overflow:clip}
.about-usecase-links{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));padding:8px;gap:5px;border-bottom:1px solid var(--line)}
.about-usecase-links>a{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:9px;padding:13px 5px 14px;border-radius:9px;font-size:.875rem;line-height:1.4;text-align:center;transition:background .25s,color .25s;min-width:0}
.about-usecase-links>a img{display:block;width:36px;height:36px;background:#fff;padding:5px;border-radius:9px;object-fit:contain;transition:transform .3s var(--ease)}
.about-usecase-links>a:hover img{transform:translateY(-3px)}
.about-usecase-links>a:hover{background:var(--paper)}
.about-usecase-links>a[aria-selected=true]{background:var(--about-dark);color:var(--about-light)}
.about-usecase-links>a[aria-selected=true]::after{content:'';width:5px;height:5px;border-radius:50%;position:absolute;top:9px;right:9px;background:var(--lime)}
.about-usecase-links>a:focus-visible{outline-offset:-3px}
.about-usecase-panels{display:grid;background:var(--paper)}
.about-usecase{min-width:0;padding:28px clamp(22px,3vw,38px) 30px;scroll-margin-top:100px;border-bottom:1px solid var(--line)}
.about-usecase:last-child{border-bottom:0}
.about-usecase-name{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:7px 18px;color:var(--muted)}
.about-usecase-name>.mono{font-size:.6875rem}
.about-usecase-name>span:last-child{font-size:.875rem;color:var(--ink)}
.about-usecase h4{font-size:clamp(1.55rem,2.35vw,2.15rem);font-weight:500;line-height:1.17;letter-spacing:-.04em;margin:24px 0 16px;text-wrap:balance}
.about-usecase>p{font-size:1rem;line-height:1.75;color:var(--muted);max-width:60ch}
.about-app-link{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:48px;width:fit-content;max-width:100%;font-size:.9375rem;border-bottom:1px solid var(--ink);margin-top:20px}
.about-app-link>span{font-size:1.3rem;transition:transform .25s var(--ease)}
.about-app-link:hover>span{transform:translate(3px,-3px)}
/* Inactive panels reserve their height, so switching never moves the page. */
.about-usecases.is-enhanced .about-usecase{grid-area:1/1;display:flex;flex-direction:column;border:0;visibility:hidden;pointer-events:none}
.about-usecases.is-enhanced .about-usecase[aria-hidden=false]{visibility:visible;pointer-events:auto}
.about-usecases.is-enhanced .about-app-link{margin-top:auto;padding-top:20px}
.motion-on .about-usecases.is-enhanced .about-usecase[aria-hidden=false]{animation:about-panel-enter .36s var(--ease) both}
.about-service-caption{display:flex;align-items:flex-start;gap:13px;border-top:1px solid var(--line);padding:17px 23px;font-size:.8125rem;line-height:1.65;color:var(--muted)}
.about-service-caption>span{font-size:1.4rem;line-height:1.15;color:var(--ink)}
.about-publisher h3>span{font-weight:700}
.about-lineage{list-style:none;position:relative;padding:0;margin:28px 0;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.about-lineage li{position:relative;display:flex;flex-direction:column;gap:5px;padding:19px 26px;background:var(--about-card)}
.about-lineage li+li{border-top:1px solid var(--line);padding-left:51px}
.about-lineage li:last-child{padding-left:76px;background:var(--lime);color:#1d1f18}
.about-lineage li+li:before{content:'↳';font-size:1.6rem;position:absolute;left:23px;top:16px;color:var(--muted)}
.about-lineage li:last-child:before{left:48px;color:#48562b}
.about-lineage-name{font-size:1.7rem;letter-spacing:-.06em;line-height:1.2}
.about-lineage-name strong{font-weight:700}
.about-lineage li>span:last-child{font-size:.8125rem;line-height:1.6;color:var(--muted)}
.about-lineage li:last-child>span:last-child{color:#48562b}
.about-publisher-detail{font-size:.9375rem}
.about-external{display:inline-flex;align-items:center;gap:27px;min-height:48px;margin-top:13px;font-size:.9375rem;text-decoration:underline;text-underline-offset:5px}
.about-external:hover{color:var(--muted)}
.about-invitation{display:grid;grid-template-columns:1fr auto;align-items:center;gap:32px;padding-top:32px;border-top:1px solid var(--line)}
.about-invitation .mono{color:var(--muted);font-size:.6875rem}
.about-invitation p{font-size:clamp(1.45rem,2.5vw,2.15rem);line-height:1.25;letter-spacing:-.04em;max-width:26ch;margin-top:10px}
.about-invitation-actions{display:flex;flex-direction:column;align-items:stretch;gap:6px}
.about-primary{display:flex;align-items:center;justify-content:space-between;gap:50px;background:var(--lime);color:#1d1f18;padding:17px 22px;border-radius:50px;min-height:58px;font-size:1rem;transition:background .25s,box-shadow .25s}
.about-primary>span{font-size:1.5rem;line-height:1;transition:transform .25s var(--ease)}
.about-primary:hover{background:#d0ff56;box-shadow:0 5px 20px #1d1f1812}
.about-primary:hover>span{transform:translate(3px,-3px)}
.about-secondary{display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:.875rem;min-height:44px;padding-inline:15px}
.about-secondary:hover{text-decoration:underline;text-underline-offset:5px}
.footer-about{display:flex;align-items:center;gap:10px;width:fit-content;min-height:44px;margin-top:4px;color:#c4ceba;font-size:.875rem;line-height:1.5;text-decoration:underline;text-underline-offset:4px}
.footer-about:hover{color:var(--lime)}
.desktop-nav{gap:clamp(12px,1.4vw,23px)}
.desktop-nav a{white-space:nowrap}
[data-theme=dark] .about-section{--about-card:#20271b;--about-dark:#131a0e;--about-dark-muted:#c1c8b5}
[data-theme=dark] .about-question{color:#1d1f18}
[data-theme=dark] .about-intro-statement>span{box-shadow:inset 0 -.2em 0 #496020}
[data-theme=dark] .about-vocation h3>span{background:linear-gradient(transparent 79%,#496020 79%,#496020 96%,transparent 96%)}
[data-theme=dark] .about-origin-end{border-color:var(--lime)}
[data-theme=dark] .about-convictions{border-color:#435535!important}
@keyframes about-panel-enter{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:1080px){.desktop-nav{display:none}.about-story{grid-template-columns:220px minmax(0,1fr);gap:30px}.about-chapters>a{gap:10px;font-size:.875rem}.about-principles{gap:24px}.about-chapter h3{font-size:2.3rem}.about-convictions{padding:28px}.about-intro{gap:36px}}
@media(max-width:800px){
  .about-section{padding-block:40px 42px}
  .about-intro{gap:30px;padding:30px 0 36px;grid-template-columns:.85fr 1fr}
  .about-intro h2{font-size:clamp(3.3rem,8.7vw,4.7rem)}
  .about-intro-statement{font-size:1.4rem}
  .about-intro-copy>p+p{font-size:.9375rem;margin-top:15px}
  .about-story{display:block}
  .about-spine{top:80px;z-index:12;background:var(--paper);padding:8px 0;border-bottom:1px solid var(--line)}
  .about-spine-heading,.about-spine-foot{display:none}
  .about-chapters{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:4px}
  .about-chapters>a,.about-chapters>a:hover,.about-chapters>a[aria-current=location]{min-height:64px;flex-direction:column;justify-content:center;gap:3px;padding:8px 2px;border:0;border-radius:5px}
  .about-chapters>a>.mono{align-self:center;padding:0;font-size:.6875rem}
  .about-chapters>a>span:nth-child(2),.about-nav-arrow{display:none}
  .about-nav-short{display:block;font-size:.75rem;line-height:1.5}
  .about-chapter{scroll-margin-top:96px;padding-block:30px 34px}
  .about-chapter-meta{margin-bottom:20px}
  .about-chapter h3{font-size:clamp(2rem,5.5vw,2.75rem)}
  .about-convictions{padding:28px;margin-top:6px}
  .about-body{max-width:none}
  .about-invitation{gap:25px}
  .about-primary{gap:25px}
}
@media(max-width:560px){
  .about-meta{padding-bottom:15px;gap:10px;align-items:center}
  .about-meta>.mono{font-size:.6875rem}
  .about-signature{font-size:.75rem;gap:9px}
  .about-intro{grid-template-columns:1fr;gap:24px;padding-block:28px 32px}
  .about-intro h2{font-size:clamp(3.8rem,15vw,5.5rem)}
  .about-intro-statement{font-size:1.55rem;line-height:1.3}
  .about-intro-copy>p+p{font-size:1rem;max-width:41ch}
  .about-spine{top:76px}
  .about-chapters{gap:2px}
  .about-nav-short{font-size:.6875rem}
  .about-chapter h3{font-size:2rem}
  .about-chapter-meta>.mono{font-size:.6875rem}
  .about-convictions{padding:24px 21px;border-radius:14px}
  .about-convictions h3{font-size:1.9rem}
  .about-principles{grid-template-columns:1fr;gap:21px;margin-top:24px}
  .about-principles>div{padding-top:16px}
  .about-principles h4{margin-block:8px}
  .about-principles p{font-size:.9375rem}
  .about-body{margin-top:20px;line-height:1.75}
  .about-origin-end{padding:17px 19px}
  .about-observations>div{gap:13px}
  .about-audiences>div{grid-template-columns:1fr;gap:6px;padding-block:16px}
  .about-usecase-links{padding:5px;gap:2px}
  .about-usecase-links>a{font-size:.6875rem;padding:14px 1px 12px}
  .about-usecase-links>a img{width:32px;height:32px}
  .about-usecase{padding:23px 21px 25px}
  .about-usecase h4{font-size:1.7rem;margin-top:21px}
  .about-usecase-name{align-items:flex-start;flex-direction:column;gap:6px}
  .about-service-caption{padding:15px 19px}
  .about-lineage li{padding:18px 21px}
  .about-lineage li+li{padding-left:42px}
  .about-lineage li+li:before{left:17px}
  .about-lineage li:last-child{padding-left:63px}
  .about-lineage li:last-child:before{left:38px}
  .about-lineage-name{font-size:1.5rem}
  .about-invitation{grid-template-columns:1fr;gap:23px;padding-top:27px}
  .about-invitation p{font-size:1.75rem}
  .about-invitation-actions{max-width:100%}
  .about-primary{padding-inline:24px}
  .about-secondary{justify-content:center;gap:17px;padding-inline:4px}
}
@media(max-width:480px){.about-spine{top:70px}.about-intro h2{font-size:14vw}}
@media(max-height:620px) and (min-width:801px){.about-spine{position:static}}
@media(max-height:480px) and (max-width:800px){.about-spine{position:static}.about-chapter{scroll-margin-top:20px}}
@media(prefers-reduced-motion:reduce){.about-section *,.about-section *:before,.about-section *:after{animation:none!important;transition:none!important}.about-usecase-links>a:hover img{transform:none}}
.motion-off .about-usecase-links>a:hover img{transform:none}
@media(forced-colors:active){
  .about-question,.about-vocation h3>span{background:none;border-bottom:2px solid CanvasText}
  .about-convictions,.about-primary,.about-usecases,.about-lineage{border:1px solid CanvasText}
  .about-chapters>a[aria-current=location],.about-usecase-links>a[aria-selected=true]{outline:2px solid Highlight;outline-offset:-3px}
  .about-usecase-links>a[aria-selected=true]::after{background:Highlight}
}