:root{color-scheme:dark;--bg:#08090c;--bg-soft:#0f1117;--panel:#151821;--panel-2:#1a1e28;--text:#f7f8fb;--muted:#bdc3cf;--silver:#d5d9e2;--gold:var(--ss-primary);--green:var(--ss-primary);--purple:var(--ss-primary);--line:rgba(213,217,226,.16);--shadow:0 24px 70px rgba(0,0,0,.35);--radius:22px;--content:1180px;--reading:72ch;--header:76px;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header) + 20px)}body{margin:0;background:radial-gradient(circle at 15% -10%,rgba(var(--ss-primary-rgb), .10),transparent 32rem),radial-gradient(circle at 90% 0,rgba(var(--ss-primary-rgb), .07),transparent 30rem),var(--bg);color:var(--text);line-height:1.65;min-width:0}body.menu-open{overflow:hidden}img{max-width:100%;height:auto}a{color:inherit;text-underline-offset:.2em}button,input,select,textarea{font:inherit}button,a{touch-action:manipulation}.skip-link{position:fixed;left:1rem;top:-6rem;z-index:1000;background:var(--text);color:#050505;padding:.8rem 1rem;border-radius:.6rem}.skip-link:focus{top:1rem}.site-header{position:sticky;top:0;z-index:var(--layer-header,300);background:#08090c;border-bottom:1px solid var(--line)}.header-inner{max-width:var(--content);min-height:var(--header);margin:auto;padding:0 1.25rem;display:flex;align-items:center;justify-content:space-between;gap:1.25rem}.brand{display:flex;align-items:center;gap:.8rem;text-decoration:none;min-height:52px}.brand img{width:48px;height:48px;object-fit:contain}.brand span{display:grid;line-height:1.05}.brand strong{font-size:1.14rem;letter-spacing:.01em}.brand small{font-size:.78rem;color:var(--gold);margin-top:.25rem}.public-menu{display:flex;align-items:center;gap:.18rem}.public-menu>a:not(.button){padding:.72rem .62rem;color:var(--muted);text-decoration:none;border-radius:.6rem;font-size:.92rem}.public-menu>a:hover,.public-menu>a[aria-current=page]{color:var(--text);background:rgba(255,255,255,.06)}.header-demo{margin-left:.55rem}.menu-button,.menu-close{display:none}.menu-backdrop{display:none}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:.78rem 1.12rem;border-radius:.78rem;border:1px solid var(--line);font-weight:760;text-decoration:none;line-height:1.2;text-align:center;background:rgba(255,255,255,.035);color:var(--text);cursor:pointer}.button:hover{border-color:rgba(213,217,226,.36);transform:translateY(-1px)}.button-primary{background:linear-gradient(135deg,var(--green),var(--ss-primary-soft));color:var(--ss-primary);border-color:transparent;box-shadow:0 12px 30px rgba(var(--ss-primary-rgb), .18)}.button-secondary{border-color:rgba(var(--ss-primary-rgb), .48);color:var(--ss-primary-soft)}.text-link{color:var(--silver);font-weight:700}.actions{display:flex;align-items:center;gap:.8rem;flex-wrap:wrap}.eyebrow{margin:0 0 .65rem;color:var(--gold);font-size:.78rem;font-weight:850;letter-spacing:.14em;text-transform:uppercase}.hero,.page-hero,.section{max-width:var(--content);margin:auto;padding-left:1.25rem;padding-right:1.25rem}.hero{min-height:calc(100svh - var(--header));display:grid;grid-template-columns:minmax(0,1.08fr) minmax(310px,.92fr);align-items:center;gap:clamp(2rem,6vw,5rem);padding-top:clamp(3.5rem,8vw,7rem);padding-bottom:clamp(3.5rem,8vw,7rem)}.hero-copy h1,.page-hero h1{margin:.2rem 0 1.2rem;max-width:15ch;font-size:clamp(2.65rem,6.4vw,5.6rem);line-height:.98;letter-spacing:-.055em}.hero-copy p{max-width:64ch;font-size:clamp(1.08rem,2vw,1.32rem);color:var(--silver)}.trust-line{margin-top:1.35rem!important;color:var(--muted)!important;font-size:.96rem!important}.hero-visual{position:relative;min-height:520px;display:grid;place-items:center}.hero-orbit{position:absolute;inset:3%;border:1px solid rgba(var(--ss-primary-rgb), .18);border-radius:50%;box-shadow:inset 0 0 90px rgba(var(--ss-primary-rgb), .07)}.hero-logo{position:relative;width:min(100%,520px);filter:drop-shadow(0 28px 60px rgba(0,0,0,.45))}.hero-note{position:absolute;right:0;bottom:6%;max-width:260px;padding:1rem 1.1rem;border:1px solid var(--line);border-radius:1rem;background:rgba(15,17,23,.92);box-shadow:var(--shadow)}.hero-note strong{color:var(--green)}.section{padding-top:clamp(4.5rem,8vw,7.5rem);padding-bottom:clamp(4.5rem,8vw,7.5rem)}.section-narrow{max-width:930px}.section-head{max-width:760px;margin-bottom:2.25rem}.section h2,.page-section h2{margin:.15rem 0 .8rem;font-size:clamp(2rem,4vw,3.6rem);line-height:1.06;letter-spacing:-.04em}.section-head p,.page-intro,.page-section>p{color:var(--muted);font-size:1.08rem}.benefit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}.benefit{padding:1.75rem 0;border-top:1px solid var(--line)}.benefit-icon{width:48px;height:48px;display:grid;place-items:center;border-radius:14px;background:rgba(var(--ss-primary-rgb), .09);color:var(--purple);font-size:1.45rem}.benefit:nth-child(2) .benefit-icon{background:rgba(var(--ss-primary-rgb), .10);color:var(--gold)}.benefit:nth-child(3) .benefit-icon{background:rgba(var(--ss-primary-rgb), .08);color:var(--green)}.benefit h3{font-size:1.28rem;margin:1.1rem 0 .45rem}.benefit p{color:var(--muted);margin:0}.workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:0;counter-reset:flow}.flow-step{position:relative;padding:1.7rem 1.3rem;border-top:1px solid var(--line);counter-increment:flow}.flow-step:not(:last-child)::after{content:'→';position:absolute;right:-.45rem;top:1.55rem;color:var(--gold);font-size:1.35rem}.flow-step::before{content:'0' counter(flow);display:block;color:var(--green);font-weight:850;font-size:.78rem;letter-spacing:.1em}.flow-step h3{margin:.5rem 0}.flow-step p{margin:0;color:var(--muted)}.demo-showcase{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:clamp(1.5rem,5vw,4rem);align-items:center}.interface-preview{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:linear-gradient(160deg,#171a23,#0c0e13);box-shadow:var(--shadow)}.preview-bar{min-height:54px;padding:.75rem 1rem;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}.preview-body{display:grid;grid-template-columns:32% 68%;min-height:390px}.preview-side{padding:1.2rem;border-right:1px solid var(--line);background:rgba(255,255,255,.02)}.preview-side span{display:block;padding:.75rem;border-radius:.65rem;color:var(--muted);margin-bottom:.35rem}.preview-side span.active{background:rgba(var(--ss-primary-rgb), .12);color:var(--text)}.preview-main{padding:clamp(1.25rem,3vw,2.2rem)}.preview-chip{display:inline-block;border:1px solid rgba(var(--ss-primary-rgb), .35);color:var(--green);border-radius:999px;padding:.3rem .65rem;font-size:.75rem}.preview-main h3{font-size:1.75rem;line-height:1.15;margin:1rem 0}.preview-step{border-left:3px solid var(--purple);padding:.8rem 1rem;background:rgba(var(--ss-primary-rgb), .06);border-radius:0 .8rem .8rem 0}.preview-controls{display:flex;gap:.5rem;flex-wrap:wrap;margin-top:1.2rem}.preview-controls span{border:1px solid var(--line);padding:.55rem .7rem;border-radius:.6rem;font-size:.8rem}.split{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(1.5rem,5vw,4rem);align-items:start}.feature-list,.plain-list{padding:0;margin:1.25rem 0;list-style:none}.feature-list li,.plain-list li{position:relative;padding:.55rem 0 .55rem 1.65rem;color:var(--silver)}.feature-list li::before,.plain-list li::before{content:'✓';position:absolute;left:0;color:var(--green);font-weight:900}.trust-panel{padding:clamp(1.7rem,4vw,3rem);border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(145deg,rgba(var(--ss-primary-rgb), .07),rgba(var(--ss-primary-rgb), .05))}.trust-panel h3{font-size:1.5rem}.evidence-strip{display:grid;grid-template-columns:1.25fr .75fr;gap:2rem;align-items:center}.stat-row{display:flex;gap:1rem;flex-wrap:wrap}.stat{min-width:150px;padding:1rem 0;border-top:1px solid var(--line)}.stat strong{display:block;font-size:2rem;color:var(--gold)}.pilot-panel{padding:clamp(2rem,5vw,4rem);border-radius:var(--radius);border:1px solid rgba(var(--ss-primary-rgb), .25);background:radial-gradient(circle at 85% 15%,rgba(var(--ss-primary-rgb), .12),transparent 20rem),var(--panel)}.final-cta{max-width:var(--content);margin:clamp(3rem,8vw,7rem) auto;padding:clamp(2.5rem,6vw,5rem) 1.25rem;text-align:center}.final-cta-inner{padding:clamp(2.2rem,6vw,5rem);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.final-cta h2{font-size:clamp(2.1rem,5vw,4.3rem);letter-spacing:-.045em;line-height:1.02;margin:.2rem auto 1rem;max-width:16ch}.final-cta .actions{justify-content:center}.page-hero{padding-top:clamp(4rem,8vw,7rem);padding-bottom:clamp(2.5rem,5vw,4.5rem)}.page-hero h1{font-size:clamp(2.7rem,6vw,5rem);max-width:18ch}.page-hero p{max-width:var(--reading);font-size:1.18rem;color:var(--silver)}.breadcrumbs{font-size:.88rem;color:var(--muted);display:flex;gap:.5rem;flex-wrap:wrap;margin-bottom:2rem}.page-section{max-width:var(--content);margin:auto;padding:clamp(2.4rem,5vw,4.5rem) 1.25rem}.page-section.narrow{max-width:920px}.page-section h2{font-size:clamp(1.75rem,3.6vw,3rem)}.page-section h3{font-size:1.28rem;margin-top:1.6rem}.page-section p,.page-section li{max-width:var(--reading)}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}.card{padding:1.5rem;border:1px solid var(--line);border-radius:1rem;background:rgba(255,255,255,.025)}.card h3{margin:.1rem 0 .5rem}.card p{color:var(--muted);margin-bottom:0}.app-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}.app-card{padding:1.7rem;border-top:1px solid var(--line)}.app-card h3{font-size:1.35rem;margin:.4rem 0}.app-card p{color:var(--muted)}.demo-groups{display:grid;gap:2rem}.demo-group{border-top:1px solid var(--line);padding-top:1.6rem}.demo-links{display:grid;grid-template-columns:repeat(3,1fr);gap:.8rem}.demo-link{display:block;padding:1rem;border:1px solid var(--line);border-radius:.8rem;text-decoration:none;background:rgba(255,255,255,.02)}.demo-link:hover{border-color:rgba(var(--ss-primary-rgb), .45)}.demo-link strong{display:block}.demo-link span{display:block;color:var(--muted);font-size:.9rem;margin-top:.25rem}.notice{padding:1rem 1.1rem;border-left:4px solid var(--gold);background:rgba(var(--ss-primary-rgb), .07);border-radius:0 .8rem .8rem 0}.notice-purple{border-left-color:var(--purple);background:rgba(var(--ss-primary-rgb), .07)}.notice-green{border-left-color:var(--green);background:rgba(var(--ss-primary-rgb), .06)}.policy-meta{display:flex;gap:.65rem;flex-wrap:wrap;padding:0;list-style:none}.policy-meta li{padding:.35rem .65rem;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:.82rem}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}.form-field{display:grid;gap:.38rem}.form-field.full{grid-column:1/-1}.form-field label{font-weight:740}.form-field input,.form-field select,.form-field textarea{width:100%;background:#0c0e13;border:1px solid rgba(213,217,226,.28);color:var(--text);border-radius:.7rem;padding:.8rem .85rem;min-height:48px}.form-field textarea{min-height:150px;resize:vertical}.form-field input:focus,.form-field select:focus,.form-field textarea:focus{outline:3px solid rgba(var(--ss-primary-rgb), .34);outline-offset:2px;border-color:var(--purple)}.form-field [aria-invalid=true]{border-color:#ffb0a6}.checkbox-row{display:flex;align-items:flex-start;gap:.7rem}.checkbox-row input{width:22px;height:22px;flex:none}.form-status{min-height:1.6em;color:var(--green);font-weight:700}.site-footer{border-top:1px solid var(--line);padding:3.5rem max(1.25rem,calc((100vw - var(--content))/2 + 1.25rem)) 1.5rem;background:#07080a}.footer-grid{display:grid;grid-template-columns:1.3fr repeat(3,.8fr);gap:2rem}.site-footer nav{display:grid;align-content:start;gap:.45rem}.site-footer h2{font-size:.9rem;margin:0 0 .4rem;color:var(--silver)}.site-footer a{color:var(--muted);text-decoration:none}.site-footer a:hover{color:var(--text)}.footer-brand p{color:var(--muted)}.pronunciation{font-size:.84rem}.development-note{max-width:var(--reading);margin:2.5rem 0 1.5rem;padding-top:1.5rem;border-top:1px solid var(--line);color:var(--muted);font-size:.9rem}.footer-bottom{border-top:1px solid var(--line);padding-top:1.25rem;display:flex;justify-content:space-between;gap:1rem;color:var(--muted);font-size:.86rem}.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
:focus-visible{outline:3px solid var(--purple);outline-offset:3px}
@media(max-width:980px){.public-menu{position:fixed;inset:0 0 0 auto;width:min(88vw,390px);height:100dvh;display:grid;align-content:start;gap:.2rem;padding:1rem;background:#0d0f14;border-left:1px solid var(--line);box-shadow:-24px 0 70px rgba(0,0,0,.45);overflow:auto}.public-menu[hidden]{display:none}.public-menu>a:not(.button){min-height:48px;display:flex;align-items:center;padding:.75rem}.menu-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:.8rem;padding-bottom:.8rem;border-bottom:1px solid var(--line)}.menu-head span{display:grid}.menu-head small{color:var(--gold)}.menu-button,.menu-close{display:grid;place-items:center;width:48px;height:48px;border:1px solid var(--line);border-radius:.7rem;background:rgba(255,255,255,.03);color:var(--text);cursor:pointer}.menu-button{gap:5px}.menu-button span{width:23px;height:2px;background:currentColor}.menu-close{font-size:2rem}.menu-backdrop{position:fixed;inset:0;display:block;background:rgba(0,0,0,.68);backdrop-filter:blur(3px)}.menu-backdrop[hidden]{display:none}.hero{grid-template-columns:1fr;min-height:auto}.hero-visual{min-height:390px;max-width:650px}.workflow{grid-template-columns:repeat(2,1fr)}.flow-step:nth-child(2)::after{display:none}.demo-showcase,.evidence-strip{grid-template-columns:1fr}.benefit-grid,.card-grid,.demo-links{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.header-inner{padding:0 1rem}.hero,.page-hero,.section,.page-section{padding-left:1rem;padding-right:1rem}.hero-copy h1{font-size:clamp(2.45rem,13vw,3.75rem)}.hero-visual{min-height:310px}.hero-note{position:relative;right:auto;bottom:auto;margin-top:-1.5rem}.benefit-grid,.workflow,.split,.card-grid,.app-grid,.demo-links,.form-grid,.footer-grid{grid-template-columns:1fr}.flow-step:not(:last-child)::after{display:none}.preview-body{grid-template-columns:1fr}.preview-side{display:none}.actions{align-items:stretch}.actions .button{width:100%}.footer-bottom{flex-direction:column}.form-field.full{grid-column:auto}.section{padding-top:4rem;padding-bottom:4rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}.button:hover{transform:none}}
@media(forced-colors:active){.button,.card,.demo-link,.interface-preview,.trust-panel{border:1px solid CanvasText}}

/* v28.1 mobile header, safe-area and navigation-layer stability */
:root{
  --safe-area-top:env(safe-area-inset-top,0px);
  --header-total:calc(var(--header) + var(--safe-area-top) + 1px);
  --layer-page:0;
  --layer-header:300;
  --layer-menu-backdrop:340;
  --layer-menu:350;
  --layer-tooltip:400;
  --layer-modal-backdrop:500;
  --layer-modal:510;
  --layer-emergency:600;
}
html{scroll-padding-top:calc(var(--header-total) + 20px)}
body{overflow-x:hidden}
body.menu-open{overflow:hidden;overscroll-behavior:none;touch-action:none}
.site-header{
  position:sticky;
  top:0;
  z-index:var(--layer-header);
  min-height:var(--header-total);
  padding-top:var(--safe-area-top);
  background:#08090c;
  border-bottom:1px solid var(--line);
  box-shadow:0 8px 24px rgba(0,0,0,.22);
  -webkit-backdrop-filter:none;
  backdrop-filter:none;
  opacity:1!important;
  visibility:visible!important;
  transform:none!important;
  overflow:visible;
}
.header-inner{
  min-height:var(--header);
  padding-left:max(1.25rem,env(safe-area-inset-left,0px));
  padding-right:max(1.25rem,env(safe-area-inset-right,0px));
}
.menu-button,.menu-close{display:grid;place-items:center;width:48px;height:48px;border:1px solid var(--line);border-radius:.7rem;background:rgba(255,255,255,.04);color:var(--text);cursor:pointer}
.menu-button{position:relative;z-index:calc(var(--layer-header) + 1);gap:5px;flex:0 0 auto}
.menu-button span{width:23px;height:2px;background:currentColor}
.menu-close{font-size:2rem}
.public-menu{
  position:fixed;
  z-index:var(--layer-menu);
  top:var(--header-total);
  right:0;
  bottom:0;
  left:auto;
  width:min(92vw,420px);
  height:auto;
  max-height:calc(100dvh - var(--header-total));
  display:grid;
  align-content:start;
  gap:.2rem;
  padding:1rem max(1rem,env(safe-area-inset-right,0px)) max(1rem,env(safe-area-inset-bottom,0px)) 1rem;
  background:#0d0f14;
  border-left:1px solid var(--line);
  box-shadow:-24px 0 70px rgba(0,0,0,.45);
  overflow:auto;
  overscroll-behavior:contain;
  visibility:visible;
  opacity:1;
  pointer-events:auto;
}
.public-menu>a:not(.button){min-height:48px;display:flex;align-items:center;padding:.75rem;color:var(--muted);text-decoration:none;border-radius:.6rem;font-size:.96rem}
.public-menu>a:hover,.public-menu>a[aria-current=page]{color:var(--text);background:rgba(255,255,255,.06)}
.menu-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:.8rem;padding-bottom:.8rem;border-bottom:1px solid var(--line)}
.menu-head span{display:grid}.menu-head small{color:var(--gold)}
.menu-backdrop{
  position:fixed;
  z-index:var(--layer-menu-backdrop);
  top:var(--header-total);
  right:0;
  bottom:0;
  left:0;
  display:block;
  background:rgba(0,0,0,.68);
  -webkit-backdrop-filter:blur(3px);
  backdrop-filter:blur(3px);
  visibility:visible;
  opacity:1;
  pointer-events:auto;
}
.public-menu[hidden],.menu-backdrop[hidden]{display:none!important;visibility:hidden!important;opacity:0!important;pointer-events:none!important}
.header-demo{margin:.75rem 0 0}
[id]{scroll-margin-top:calc(var(--header-total) + 20px)}
@media(max-width:640px){
  .header-inner{padding-left:max(1rem,env(safe-area-inset-left,0px));padding-right:max(1rem,env(safe-area-inset-right,0px));gap:.6rem}
  .brand{min-width:0;gap:.55rem}.brand img{width:44px;height:44px;flex:0 0 auto}.brand span{min-width:0}.brand strong{font-size:1rem}.brand small{font-size:.72rem}
}
@media(max-width:480px){.public-menu{width:min(90vw,420px)}}
@media(max-height:520px) and (orientation:landscape){.public-menu{padding-top:.65rem}.menu-head{margin-bottom:.35rem;padding-bottom:.45rem}.public-menu>a:not(.button){min-height:44px;padding:.55rem .7rem}}
@media(prefers-reduced-motion:reduce){.site-header,.public-menu,.menu-backdrop,.menu-button,.menu-close{transition:none!important;animation:none!important}}

/* v27 VexSpark™ guide and subject-version pages */
.vex-hero,.versions-hero{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(260px,.62fr);gap:clamp(2rem,6vw,5rem);align-items:center;padding-top:clamp(3.5rem,7vw,6rem);padding-bottom:clamp(3rem,6vw,5rem)}
.vex-hero h1,.versions-hero h1{margin:.2rem 0 1.2rem;max-width:16ch;font-size:clamp(2.7rem,6vw,5.15rem);line-height:.98;letter-spacing:-.052em}.vex-hero-copy>p,.versions-hero>div>p{max-width:65ch;color:var(--silver);font-size:1.12rem}.vex-hero-image,.versions-hero>img{justify-self:center;width:min(100%,350px);max-height:570px;object-fit:contain;filter:drop-shadow(0 24px 55px rgba(0,0,0,.42))}.vex-journey{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:.8rem}.vex-stage{display:grid;grid-template-rows:210px auto;border-top:1px solid var(--line);padding-top:1rem;min-width:0}.vex-stage img{width:100%;height:210px;object-fit:contain;object-position:center bottom}.vex-stage div{padding:.8rem .25rem}.vex-stage span{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;background:rgba(var(--ss-primary-rgb), .12);color:var(--purple);font-weight:900}.vex-stage h3{margin:.65rem 0 .35rem;font-size:1.12rem}.vex-stage p{margin:0;color:var(--muted);font-size:.94rem}.vex-demo-grid{display:grid;grid-template-columns:minmax(0,1.28fr) minmax(300px,.72fr);gap:1rem;align-items:start}.vex-demo-panel,.vex-question-panel{border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(150deg,rgba(26,30,40,.98),rgba(12,14,19,.98));box-shadow:var(--shadow);padding:clamp(1.25rem,3vw,2rem)}.vex-demo-heading{display:grid;grid-template-columns:90px 1fr;gap:1rem;align-items:center}.vex-demo-heading img{width:90px;height:122px;object-fit:contain}.vex-demo-heading h3,.vex-question-panel h3{margin:.2rem 0;font-size:clamp(1.45rem,3vw,2rem)}.method-buttons,.speech-controls,.suggested-questions{display:flex;gap:.55rem;flex-wrap:wrap;margin:1.2rem 0}.method-buttons button,.speech-controls button,.suggested-questions button{min-height:44px;border:1px solid var(--line);border-radius:.7rem;background:rgba(255,255,255,.035);color:var(--text);padding:.65rem .8rem;cursor:pointer}.method-buttons button:hover,.method-buttons button[aria-pressed=true],.suggested-questions button:hover{border-color:rgba(var(--ss-primary-rgb), .56);background:rgba(var(--ss-primary-rgb), .11)}.vex-output,.vex-feedback,.vex-question-response{padding:1rem 1.1rem;border-left:4px solid var(--purple);border-radius:0 .75rem .75rem 0;background:rgba(var(--ss-primary-rgb), .07);min-height:68px}.vex-feedback{border-left-color:var(--gold);background:rgba(var(--ss-primary-rgb), .07)}.vex-feedback.is-correct{border-left-color:var(--green);background:rgba(var(--ss-primary-rgb), .07)}.vex-answer-form,.vex-question-panel form{display:grid;gap:.55rem;margin-top:1.25rem}.vex-answer-form label,.vex-question-panel label{font-weight:800}.answer-row{display:grid;grid-template-columns:minmax(120px,1fr) auto;gap:.65rem}.vex-answer-form input,.vex-question-panel textarea{width:100%;border:1px solid rgba(213,217,226,.28);border-radius:.75rem;background:#0c0e13;color:var(--text);padding:.8rem .9rem;min-height:48px}.vex-question-panel textarea{resize:vertical}.field-help{margin:0;color:var(--muted);font-size:.9rem}.extra-examples{margin-top:1.3rem;border-top:1px solid var(--line);padding-top:1rem}.extra-examples summary{cursor:pointer;font-weight:850;color:var(--silver);min-height:44px;display:flex;align-items:center}.example-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.8rem;margin-top:.8rem}.example-grid article{padding:1rem;border:1px solid var(--line);border-radius:.8rem;background:rgba(255,255,255,.02)}.example-grid h4{margin:.1rem 0 .45rem}.example-grid p{margin:0;color:var(--muted)}.hub-address{font-size:.92rem!important;padding:.8rem 0;border-top:1px solid var(--line);overflow-wrap:anywhere}.version-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.version-card{position:relative;padding:clamp(1.35rem,3vw,2rem);border:1px solid var(--line);border-radius:var(--radius);background:rgba(255,255,255,.025);overflow:hidden}.version-card::before{content:'';position:absolute;inset:0 auto 0 0;width:4px;background:var(--purple)}.version-maths::before{background:var(--green)}.version-advanced::before{background:var(--gold)}.version-french::before{background:var(--purple)}.version-spanish::before{background:linear-gradient(var(--green),var(--purple))}.version-card-top{display:flex;justify-content:space-between;gap:.6rem;flex-wrap:wrap}.version-count,.version-tag{display:inline-flex;align-items:center;min-height:30px;padding:.25rem .6rem;border-radius:999px;border:1px solid var(--line);font-size:.76rem;font-weight:800}.version-count{color:var(--green)}.version-tag{color:var(--gold)}.version-card h3{font-size:clamp(1.55rem,3vw,2.2rem);margin:1rem 0 .45rem}.version-card h4{margin:1.25rem 0 .35rem;color:var(--silver)}.version-card p,.version-card li{color:var(--muted)}.version-card ul{padding-left:1.2rem}.version-support-image{display:block;width:min(100%,260px);max-height:370px;object-fit:contain;margin:auto}.versions-hero>img{max-height:520px}
@media(max-width:1050px){.vex-journey{grid-template-columns:repeat(3,minmax(0,1fr))}.vex-demo-grid{grid-template-columns:1fr}.vex-question-panel{max-width:none}}
@media(max-width:760px){.vex-hero,.versions-hero{grid-template-columns:1fr}.vex-hero-image,.versions-hero>img{width:min(70vw,290px);max-height:410px}.vex-journey{grid-template-columns:repeat(2,minmax(0,1fr))}.version-grid{grid-template-columns:1fr}}
@media(max-width:520px){.vex-journey{grid-template-columns:1fr}.vex-stage{grid-template-columns:110px 1fr;grid-template-rows:auto;align-items:center}.vex-stage img{height:155px}.vex-demo-heading{grid-template-columns:70px 1fr}.vex-demo-heading img{width:70px;height:98px}.answer-row,.example-grid{grid-template-columns:1fr}.method-buttons button,.speech-controls button,.suggested-questions button{width:100%}}


/* v27.1 expanded safeguarding approach */
.safeguarding-hero h1{max-width:19ch}.policy-meta{display:flex;gap:.55rem 1.1rem;flex-wrap:wrap;margin-top:1.6rem;padding-top:1.1rem;border-top:1px solid var(--line);color:var(--muted);font-size:.88rem}.policy-meta strong{color:var(--silver)}.safeguarding-emergency{padding-top:1rem}.emergency-panel{padding:clamp(1.5rem,4vw,2.7rem);border:1px solid rgba(var(--ss-primary-rgb), .42);border-left:5px solid var(--gold);border-radius:var(--radius);background:linear-gradient(145deg,rgba(var(--ss-primary-rgb), .095),rgba(15,17,23,.98))}.emergency-panel h2{max-width:22ch}.emergency-panel p{max-width:80ch}.safeguarding-summary-grid .card{min-height:100%}.safeguarding-toc{margin-top:2rem;padding:1.3rem 1.4rem;border:1px solid var(--line);border-radius:1rem;background:rgba(255,255,255,.02);display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.35rem 1.2rem}.safeguarding-toc h2{grid-column:1/-1;font-size:1.2rem;margin:.1rem 0 .6rem}.safeguarding-toc a{min-height:44px;display:flex;align-items:center;color:var(--silver)}.safeguarding-boundary-grid,.safeguarding-check-grid,.safeguarding-not-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin-top:2rem}.safeguarding-boundary-grid article,.safeguarding-check-grid article,.safeguarding-not-grid p{padding:1.25rem;border-top:1px solid var(--line);background:rgba(255,255,255,.018)}.safeguarding-boundary-grid strong{display:block;color:var(--green);font-size:1.05rem}.safeguarding-boundary-grid p,.safeguarding-check-grid p,.safeguarding-not-grid p{color:var(--muted);margin:.45rem 0 0}.safeguarding-control-list{display:grid;gap:.35rem;margin:2rem 0}.safeguarding-control-list article{display:grid;grid-template-columns:52px minmax(0,1fr);gap:1rem;padding:1.2rem 0;border-top:1px solid var(--line)}.safeguarding-control-list article>span{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:rgba(var(--ss-primary-rgb), .12);color:var(--purple);font-weight:900}.safeguarding-control-list h3{margin:.05rem 0 .35rem}.safeguarding-control-list p{margin:0;color:var(--muted)}.responsibility-table-wrap{overflow-x:auto;margin-top:1.7rem;border:1px solid var(--line);border-radius:1rem}.responsibility-table{width:100%;border-collapse:collapse;min-width:850px}.responsibility-table th,.responsibility-table td{text-align:left;vertical-align:top;padding:1rem;border-bottom:1px solid var(--line)}.responsibility-table thead th{background:rgba(var(--ss-primary-rgb), .08);color:var(--silver)}.responsibility-table tbody th{color:var(--gold);width:20%}.responsibility-table td{color:var(--muted)}.safeguarding-process{list-style:none;padding:0;margin:2rem 0;counter-reset:safeprocess;display:grid;gap:.6rem}.safeguarding-process li{counter-increment:safeprocess;display:grid;grid-template-columns:minmax(180px,.42fr) minmax(0,1fr);gap:1rem;padding:1rem 0;border-top:1px solid var(--line)}.safeguarding-process li::before{content:'0' counter(safeprocess);grid-row:1/span 2;color:var(--purple);font-weight:900;display:none}.safeguarding-process strong{color:var(--silver)}.safeguarding-process span{color:var(--muted)}.safeguarding-check-grid article{border:1px solid var(--line);border-radius:1rem}.safeguarding-check-grid h3{margin:.1rem 0 .45rem}.production-checklist{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.7rem;margin-top:1.8rem}.production-checklist>div{display:grid;grid-template-columns:34px 1fr;gap:.7rem;padding:1rem;border:1px solid var(--line);border-radius:.85rem;background:rgba(255,255,255,.02)}.production-checklist span{color:var(--green);font-size:1.45rem;line-height:1}.production-checklist p{margin:0;color:var(--muted)}.production-checklist strong{color:var(--silver)}.safeguarding-not-grid p{margin:0;border-left:3px solid var(--gold);border-top:0;border-radius:0 .7rem .7rem 0}.official-guidance-list{list-style:none;padding:0;margin:1.5rem 0}.official-guidance-list li{border-top:1px solid var(--line)}.official-guidance-list a{display:flex;align-items:center;min-height:52px;color:var(--silver);font-weight:750}.official-guidance-list a::after{content:'↗';margin-left:.55rem;color:var(--green)}.safeguarding-contact{border-top:1px solid var(--line)}
@media(max-width:900px){.safeguarding-boundary-grid,.safeguarding-check-grid,.safeguarding-not-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.production-checklist{grid-template-columns:1fr}}
@media(max-width:640px){.safeguarding-toc,.safeguarding-boundary-grid,.safeguarding-check-grid,.safeguarding-not-grid{grid-template-columns:1fr}.safeguarding-process li{grid-template-columns:1fr;gap:.25rem}.policy-meta{display:grid}.safeguarding-control-list article{grid-template-columns:42px minmax(0,1fr)}}

/* v28.2 homepage UX refinement */
.refined-home main{overflow:clip}.refined-home .section{padding-top:clamp(4.2rem,7vw,7rem);padding-bottom:clamp(4.2rem,7vw,7rem)}
.refined-home .hero{min-height:min(760px,calc(100svh - var(--header-total)));padding-top:clamp(3rem,7vw,5.5rem);padding-bottom:clamp(3.5rem,7vw,5.8rem)}
.refined-hero{grid-template-columns:minmax(0,1.06fr) minmax(330px,.94fr)}.refined-hero .hero-copy h1{max-width:13ch;font-size:clamp(2.65rem,5.7vw,5.05rem)}.refined-hero .hero-copy>p:not(.eyebrow):not(.trust-line){max-width:58ch}.hero-actions{margin-top:1.55rem}.hero-actions .button{min-width:170px}.secondary-cta{text-decoration:none}
.ecosystem-visual{position:relative;min-height:480px;display:grid;place-items:center;isolation:isolate}.ecosystem-ring{position:absolute;width:min(90%,470px);aspect-ratio:1;border:1px solid rgba(213,217,226,.16);border-radius:50%;box-shadow:inset 0 0 70px rgba(var(--ss-primary-rgb), .055),0 0 70px rgba(var(--ss-primary-rgb), .035)}.ecosystem-ring::before,.ecosystem-ring::after{content:"";position:absolute;inset:18%;border:1px dashed rgba(var(--ss-primary-rgb), .18);border-radius:50%}.ecosystem-ring::after{inset:36%;border-style:solid;border-color:rgba(var(--ss-primary-rgb), .18)}.ecosystem-core{position:relative;z-index:2;width:184px;min-height:184px;padding:1rem;border-radius:50%;display:grid;place-items:center;text-align:center;background:#0c0e13;border:1px solid rgba(var(--ss-primary-rgb), .35);box-shadow:0 24px 70px rgba(0,0,0,.4)}.ecosystem-core img{width:106px;height:106px;object-fit:contain}.ecosystem-core strong{font-size:1rem}.ecosystem-core span{font-size:.76rem;color:var(--muted)}.ecosystem-node{position:absolute;z-index:3;min-width:108px;padding:.62rem .78rem;border:1px solid var(--line);border-radius:999px;background:#10131a;text-align:center;font-weight:760;font-size:.8rem;box-shadow:0 12px 30px rgba(0,0,0,.24)}.node-pupil{top:7%;left:12%;color:var(--green)}.node-teacher{top:7%;right:9%;color:var(--gold)}.node-send{top:47%;right:0;color:var(--purple)}.node-leadership{bottom:7%;right:15%;color:var(--silver)}.node-parent{bottom:7%;left:15%;color:var(--green)}
.role-snapshot-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:clamp(.75rem,2vw,1.4rem)}.role-snapshot{padding:1.4rem 0;border-top:1px solid var(--line)}.role-snapshot>span{display:block;color:var(--purple);font-size:.73rem;font-weight:850;letter-spacing:.12em}.role-snapshot:nth-child(2)>span,.role-snapshot:nth-child(4)>span{color:var(--gold)}.role-snapshot:nth-child(3)>span,.role-snapshot:nth-child(5)>span{color:var(--green)}.role-snapshot h3{margin:.55rem 0 .45rem;font-size:1.18rem}.role-snapshot p{margin:0;color:var(--muted);font-size:.94rem}
.role-journey{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1rem}.role-journey li{position:relative;min-width:0}.role-journey li:not(:last-child)::after{content:'→';position:absolute;right:-.9rem;top:2.2rem;width:.8rem;text-align:center;color:var(--gold);font-size:1.2rem}.role-journey article{height:100%;padding:1.45rem;border:1px solid var(--line);border-radius:1rem;background:rgba(255,255,255,.018)}.journey-number{display:block;color:var(--green);font-size:.75rem;font-weight:900;letter-spacing:.12em}.role-journey h3{margin:.65rem 0 .45rem;font-size:1.22rem}.role-journey p{margin:0;color:var(--muted);font-size:.94rem}
.learning-sequence-layout{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(310px,.92fr);gap:clamp(1.5rem,5vw,4rem);align-items:stretch}.learning-steps{display:grid;gap:.65rem}.learning-step{width:100%;min-height:88px;display:grid;grid-template-columns:48px minmax(0,1fr);align-items:center;gap:1rem;text-align:left;padding:1rem 1.1rem;border:1px solid var(--line);border-radius:1rem;background:rgba(255,255,255,.018);color:var(--text);cursor:pointer;transition:border-color .16s ease,background-color .16s ease,transform .16s ease}.learning-step:hover,.learning-step:focus-visible{border-color:rgba(213,217,226,.38)}.learning-step:focus-visible{outline:3px solid rgba(var(--ss-primary-rgb), .38);outline-offset:3px}.learning-step[aria-pressed=true]{border-color:rgba(var(--ss-primary-rgb), .55);background:rgba(var(--ss-primary-rgb), .085);box-shadow:inset 4px 0 0 var(--purple)}.learning-step-number{width:42px;height:42px;display:grid;place-items:center;border-radius:50%;background:rgba(var(--ss-primary-rgb), .1);color:var(--purple);font-weight:900}.learning-step strong,.learning-step small{display:block}.learning-step strong{font-size:1.05rem}.learning-step small{margin-top:.2rem;color:var(--muted);line-height:1.4}.learning-preview{display:grid;grid-template-columns:minmax(120px,.38fr) minmax(0,.62fr);gap:1.35rem;align-items:center;padding:clamp(1.35rem,3vw,2rem);border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(155deg,rgba(var(--ss-primary-rgb), .075),rgba(15,17,23,.98));min-height:100%}.learning-preview img{width:100%;max-height:330px;object-fit:contain}.learning-preview h3{font-size:clamp(1.55rem,3vw,2.15rem);margin:.2rem 0 .55rem}.learning-preview p{color:var(--muted)}.preview-label{margin:0;color:var(--gold)!important;font-size:.75rem;font-weight:850;letter-spacing:.12em;text-transform:uppercase}.teacher-control-note{padding-top:1rem;border-top:1px solid var(--line);font-size:.9rem}.teacher-control-note strong{color:var(--silver)}
.send-home-section{display:grid;grid-template-columns:minmax(0,.98fr) minmax(360px,1.02fr);gap:clamp(2rem,6vw,5rem);align-items:center}.send-home-copy h2{max-width:14ch}.send-home-copy>p{max-width:58ch;color:var(--muted);font-size:1.06rem}.compact-feature-list{list-style:none;padding:0;margin:1.5rem 0 1.8rem;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.6rem 1.1rem}.compact-feature-list li{position:relative;padding-left:1.4rem;color:var(--silver)}.compact-feature-list li::before{content:'✓';position:absolute;left:0;color:var(--green);font-weight:900}.send-dashboard-preview{overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);background:#0d0f14;box-shadow:var(--shadow)}.send-preview-top{min-height:66px;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem 1.2rem;border-bottom:1px solid var(--line)}.send-preview-top>span:first-child{display:grid}.send-preview-top small{color:var(--muted)}.send-preview-status{padding:.28rem .62rem;border:1px solid rgba(var(--ss-primary-rgb), .36);border-radius:999px;color:var(--green);font-size:.75rem;font-weight:800}.send-preview-summary{display:grid;grid-template-columns:repeat(3,1fr);border-bottom:1px solid var(--line)}.send-preview-summary div{padding:1rem 1.1rem}.send-preview-summary div+div{border-left:1px solid var(--line)}.send-preview-summary strong,.send-preview-summary span{display:block}.send-preview-summary strong{font-size:1.55rem;color:var(--silver)}.send-preview-summary span{font-size:.78rem;color:var(--muted)}.send-preview-body{padding:.45rem 1.1rem}.send-preview-body article{display:grid;grid-template-columns:54px minmax(0,1fr) auto;gap:.8rem;align-items:center;padding:1rem 0;border-bottom:1px solid var(--line)}.send-preview-body article:last-child{border-bottom:0}.preview-time{color:var(--gold);font-weight:850;font-size:.82rem}.send-preview-body div{display:grid}.send-preview-body small{color:var(--muted)}.status-ready,.status-review{padding:.26rem .55rem;border-radius:999px;font-size:.7rem;font-weight:800;white-space:nowrap}.status-ready{color:var(--green);background:rgba(var(--ss-primary-rgb), .08)}.status-review{color:var(--gold);background:rgba(var(--ss-primary-rgb), .09)}.send-preview-actions{display:flex;gap:.45rem;flex-wrap:wrap;padding:1rem 1.1rem;border-top:1px solid var(--line);background:rgba(255,255,255,.018)}.send-preview-actions span{padding:.48rem .62rem;border:1px solid var(--line);border-radius:.6rem;color:var(--silver);font-size:.76rem}
.safety-home-section{max-width:1080px}.safety-control-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1rem}.safety-control-grid article{padding:1.35rem 0;border-top:1px solid var(--line)}.safety-control-grid article>span{color:var(--green);font-weight:900}.safety-control-grid h3{margin:.55rem 0 .4rem;font-size:1.08rem}.safety-control-grid p{margin:0;color:var(--muted);font-size:.92rem}.minor-route{margin-top:1.5rem}.minor-route .text-link{display:inline-flex;min-height:44px;align-items:center}
.explore-home-section{max-width:1040px}.explore-link-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.8rem}.explore-link-grid a{display:block;min-height:132px;padding:1.2rem;border:1px solid var(--line);border-radius:1rem;background:rgba(255,255,255,.015);text-decoration:none;transition:border-color .16s ease,background-color .16s ease,transform .16s ease}.explore-link-grid a:hover,.explore-link-grid a:focus-visible{border-color:rgba(var(--ss-primary-rgb), .48);background:rgba(var(--ss-primary-rgb), .05);transform:translateY(-2px)}.explore-link-grid a:focus-visible{outline:3px solid rgba(var(--ss-primary-rgb), .36);outline-offset:3px}.explore-link-grid strong,.explore-link-grid span{display:block}.explore-link-grid strong{color:var(--silver);font-size:1.02rem}.explore-link-grid span{margin-top:.4rem;color:var(--muted);font-size:.9rem}.final-cta-inner>p:not(.eyebrow){max-width:58ch;margin:0 auto 1.5rem;color:var(--muted)}
.button{transition:transform .15s ease,border-color .15s ease,box-shadow .15s ease,background-color .15s ease}.button:active{transform:translateY(1px) scale(.985)}@keyframes safespark-reveal{from{opacity:.94;transform:translateY(8px)}to{opacity:1;transform:none}}.reveal-enter{animation:safespark-reveal .32s ease-out both}.reveal-ready,.reveal-ready.is-visible{opacity:1;transform:none}
@media(max-width:1050px){.role-snapshot-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.safety-control-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.explore-link-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:900px){.refined-hero,.learning-sequence-layout,.send-home-section{grid-template-columns:1fr}.ecosystem-visual{min-height:430px;max-width:650px;width:100%;margin:auto}.role-journey{grid-template-columns:1fr;gap:1.55rem;padding-left:1rem}.role-journey li:not(:last-child)::after{display:block;content:'↓';right:auto;left:1.25rem;top:auto;bottom:-1.45rem}.learning-preview{grid-template-columns:minmax(100px,.3fr) minmax(0,.7fr)}.send-dashboard-preview{width:100%;max-width:720px}.compact-feature-list{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:650px){.refined-home .hero{min-height:auto}.hero-actions{display:grid;grid-template-columns:1fr}.hero-actions .button{width:100%;min-width:0}.ecosystem-visual{min-height:360px}.ecosystem-core{width:142px;min-height:142px}.ecosystem-core img{width:80px;height:80px}.ecosystem-node{min-width:88px;padding:.5rem .58rem;font-size:.68rem}.node-pupil{left:0}.node-teacher{right:0}.node-send{right:0}.node-leadership{right:2%}.node-parent{left:2%}.role-snapshot-grid,.role-journey,.safety-control-grid,.explore-link-grid{grid-template-columns:1fr}.role-journey{gap:1.55rem;padding-left:1rem}.learning-preview{grid-template-columns:95px minmax(0,1fr)}.learning-preview img{max-height:210px}.compact-feature-list{grid-template-columns:1fr}.send-preview-summary{grid-template-columns:1fr}.send-preview-summary div{display:flex;align-items:baseline;gap:.6rem}.send-preview-summary div+div{border-left:0;border-top:1px solid var(--line)}.send-preview-body article{grid-template-columns:48px minmax(0,1fr)}.send-preview-body article>span:last-child{grid-column:2;justify-self:start}.final-cta-inner{padding-left:1rem;padding-right:1rem}}
@media(max-width:420px){.ecosystem-visual{min-height:330px}.ecosystem-core{width:126px;min-height:126px}.ecosystem-core img{width:66px;height:66px}.ecosystem-node{min-width:80px;font-size:.63rem}.learning-step{grid-template-columns:40px minmax(0,1fr);padding:.9rem}.learning-step-number{width:36px;height:36px}.learning-preview{grid-template-columns:1fr;text-align:center}.learning-preview img{width:105px;margin:auto}.send-preview-actions span{width:100%;text-align:center}}
@media(prefers-reduced-motion:reduce){.button,.learning-step,.explore-link-grid a,.reveal-enter{transition:none!important;animation:none!important;transform:none!important}.reveal-ready,.reveal-ready.is-visible{opacity:1;transform:none;transition:none}}