:root{
  --bg:#f2f0ea;--paper:#faf9f6;--white:#fff;--dark:#111211;--dark2:#191a19;
  --text:#151615;--soft:#676b68;--light:#f6f5f1;--line:rgba(21,22,21,.15);
  --line-dark:rgba(246,245,241,.18);--accent:#697a70;--max:1440px;
  --gutter:clamp(20px,3.2vw,56px);--radius:2px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--bg);scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--text);overflow-x:clip;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body.menu-open{overflow:hidden}a{color:inherit;text-decoration:none}p{margin:0}img,video{max-width:100%;display:block}button,input,select,textarea{font:inherit;color:inherit}.container{width:min(var(--max),calc(100% - (var(--gutter)*2)));margin-inline:auto}.copy{max-width:760px}.eyebrow{font-size:12px;line-height:1.2;letter-spacing:.16em;text-transform:uppercase;font-weight:750}.display{font-size:clamp(2.8rem,6.63vw,6.3rem);line-height:.95;letter-spacing:-.055em;font-weight:590;margin:0;text-wrap:balance}.h2{font-size:clamp(2.55rem,5.25vw,5.15rem);line-height:.99;letter-spacing:-.045em;font-weight:590;margin:0;text-wrap:balance}.h3{font-size:clamp(1.65rem,3vw,2.8rem);line-height:1.05;letter-spacing:-.035em;margin:0;font-weight:590}.lede{font-size:clamp(1.12rem,1.55vw,1.48rem);line-height:1.5;color:var(--soft)}.body-lg{font-size:clamp(1.08rem,1.35vw,1.3rem);line-height:1.6}.muted{color:var(--soft)}.section{padding:clamp(92px,10.5vw,170px) 0}.section-tight{padding:clamp(70px,7.8vw,120px) 0}.dark{background:var(--dark);color:var(--light)}.dark .lede,.dark .muted{color:#b8bab8}.paper{background:var(--paper)}.white{background:#fff}.rule{border-top:1px solid var(--line);padding:22px 0}.dark .rule{border-color:var(--line-dark)}.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(36px,6vw,96px);align-items:start}.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(24px,4vw,56px)}.grid4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}.actions{display:flex;align-items:center;flex-wrap:wrap;gap:20px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:0 22px;border:1px solid currentColor;background:transparent;font-size:14px;font-weight:700;transition:background .2s ease,color .2s ease,border-color .2s ease}.btn:hover{background:var(--text);color:var(--light)}.btn-dark{color:var(--light);border-color:rgba(246,245,241,.68)}.btn-dark:hover{background:var(--light);color:var(--text);border-color:var(--light)}.link{display:inline-flex;align-items:center;gap:.5rem;font-weight:700}.link::after{content:"→";transition:transform .18s ease}.link:hover::after{transform:translateX(4px)}
.skip-link{position:fixed;top:-100px;left:16px;z-index:100;background:#fff;color:#111;padding:12px 16px}.skip-link:focus{top:16px}
header.site-header{position:fixed;inset:0 0 auto;z-index:40;color:#fff;background:transparent;transition:background .22s ease,border-color .22s ease,backdrop-filter .22s ease;border-bottom:1px solid transparent}.site-header.is-scrolled{background:rgba(17,18,17,.94);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom-color:rgba(255,255,255,.08)}.nav{min-height:84px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{font-size:14px;font-weight:850;letter-spacing:.2em;white-space:nowrap}.navlinks{display:flex;align-items:center;gap:34px;font-size:14px}.navlinks>a:not(.nav-cta){opacity:.9}.navlinks>a:hover{opacity:1}.nav-cta{border:1px solid rgba(255,255,255,.48);padding:12px 16px;font-weight:700;transition:.2s}.nav-cta:hover{border-color:#fff;background:#fff;color:#111}.menu-toggle{display:none;background:none;border:0;color:#fff;width:44px;height:44px;padding:0;cursor:pointer}.menu-toggle span{display:block;width:22px;height:1px;background:currentColor;margin:6px auto;transition:.2s}.mobile-menu{display:none}
.hero{min-height:96svh;display:flex;align-items:flex-end;position:relative;overflow:hidden;background:linear-gradient(110deg,#0f100f 0%,#111211 50%,#1c1d1c 100%)}.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 72% 24%,rgba(255,255,255,.11),transparent 34%),linear-gradient(90deg,rgba(0,0,0,.05),transparent 70%)}.hero-inner{position:relative;z-index:1;padding:150px 0 clamp(72px,8vw,116px)}.hero .lede{max-width:760px;margin-top:46px}.hero .actions{margin-top:44px}.scroll-cue{position:absolute;right:var(--gutter);bottom:34px;z-index:2;font-size:11px;letter-spacing:.15em;text-transform:uppercase;color:#888;display:flex;align-items:center;gap:10px}.scroll-cue::after{content:"";display:block;width:42px;height:1px;background:#777}
.statement-list{margin-top:72px}.statement-row{padding:24px 0;border-top:1px solid var(--line-dark);font-size:clamp(1.6rem,3.3vw,3.3rem);letter-spacing:-.035em}.statement-row:last-child{border-bottom:1px solid var(--line-dark)}.big-statement{font-size:clamp(2.15rem,4.8vw,4.8rem);line-height:1.03;letter-spacing:-.045em;max-width:1100px}.context-grid{margin-top:58px}.context-row{display:grid;grid-template-columns:160px 1fr;gap:28px;padding:22px 0;border-top:1px solid var(--line)}.context-row:last-child{border-bottom:1px solid var(--line)}.context-row strong{font-size:1.08rem}.context-visual{margin-top:76px;min-height:44vh;position:relative;overflow:hidden;background:linear-gradient(135deg,#dedbd3,#bcb9b1)}.context-visual::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.08),transparent 45%),repeating-linear-gradient(90deg,transparent 0 14.9%,rgba(255,255,255,.3) 15% 15.1%)}.context-visual-label{position:absolute;left:28px;bottom:24px;font-size:11px;letter-spacing:.15em;text-transform:uppercase;color:rgba(20,20,20,.58)}
.comparison{display:grid;grid-template-columns:1fr 1fr;gap:32px;margin-top:54px}.comparison>div{border-top:1px solid var(--line-dark);padding-top:20px}.sequence{font-size:clamp(1.25rem,1.8vw,1.6rem);line-height:1.6;margin-top:22px}.participation-principles{margin-top:62px}.participation-callout{margin-top:40px;font-size:clamp(1.4rem,2.2vw,2rem);line-height:1.48;max-width:1040px}.groundtruth-demo{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(36px,6vw,88px);margin-top:80px;align-items:stretch}.visual-placeholder{min-height:480px;background:linear-gradient(135deg,#d8d5ce,#b8b5ad);position:relative;overflow:hidden}.visual-placeholder::after{content:"PUBLIC-SAFE VISUAL PLACEHOLDER";position:absolute;right:18px;bottom:16px;font-size:10px;letter-spacing:.13em;opacity:.42}.quote-stack{display:flex;flex-direction:column;justify-content:center}.quote-line{padding:18px 0;border-top:1px solid var(--line);font-size:clamp(1.05rem,1.6vw,1.38rem);line-height:1.45}.quote-line:last-child{border-bottom:1px solid var(--line)}
.data-row{display:grid;grid-template-columns:88px 1fr;gap:28px;padding:34px 0;border-top:1px solid var(--line)}.data-row:last-child{border-bottom:1px solid var(--line)}.data-row strong{font-size:clamp(1.6rem,3.25vw,3.15rem);line-height:1;letter-spacing:-.035em}.data-row.primary{padding-block:44px}.data-row.primary strong{font-size:clamp(2rem,4vw,4rem)}.trajectory-main{margin-top:76px;font-size:clamp(1.8rem,4vw,4.5rem);line-height:1.13;letter-spacing:-.04em}.trajectory-recovery{margin-top:62px;border-top:1px solid var(--line-dark);padding-top:32px;font-size:clamp(1.35rem,2.7vw,2.8rem);line-height:1.25;letter-spacing:-.025em}.category-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px 34px;font-size:clamp(1.15rem,1.8vw,1.55rem)}.enterprise-list{margin-top:48px}.enterprise-list .rule{font-size:clamp(1.15rem,1.65vw,1.45rem)}.closing{min-height:70svh;display:flex;align-items:center}.closing-copy{font-size:clamp(2.7rem,5.6vw,6rem);line-height:.99;letter-spacing:-.052em;max-width:1200px}
.page-hero{padding:180px 0 120px;min-height:70svh;display:flex;align-items:flex-end}.page-title{font-size:clamp(3rem,7.2vw,6.6rem);line-height:.96;letter-spacing:-.052em;margin:22px 0 32px;font-weight:590;max-width:1240px}.page-subtitle{max-width:800px}.section-title{max-width:1050px}.kicker{font-size:clamp(1.3rem,2.4vw,2.15rem);line-height:1.35;max-width:950px}.two-col-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 64px;margin-top:54px}.two-col-list .rule{font-size:1.08rem}.principle{padding-top:22px;border-top:1px solid var(--line)}.principle h3{font-size:1.15rem;margin:0 0 10px}.principle p{color:var(--soft);line-height:1.55}.dark .principle{border-color:var(--line-dark)}.dark .principle p{color:#b8bab8}.cardless-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:38px 56px;margin-top:60px}.legal{max-width:780px}.legal h2{font-size:1.65rem;margin:50px 0 14px}.legal h2:first-of-type{margin-top:0}.legal p,.legal li{font-size:1rem;line-height:1.7;color:#444}.legal ul{padding-left:20px}.legal .notice{padding:18px 20px;border:1px solid var(--line);background:#fff;margin:28px 0}
.form-wrap{max-width:900px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:48px}.field{display:flex;flex-direction:column;gap:8px}.field.full{grid-column:1/-1}.field label{font-size:13px;font-weight:700}.field input,.field select,.field textarea{width:100%;border:1px solid #b8bbb8;background:#fff;padding:14px 14px;min-height:50px;border-radius:0;outline:none}.field textarea{min-height:150px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus{border-color:#111;box-shadow:0 0 0 2px rgba(17,17,17,.08)}.help{font-size:12px;color:var(--soft)}.form-actions{margin-top:26px;display:flex;gap:18px;align-items:center;flex-wrap:wrap}.form-status{font-size:14px;min-height:22px}.form-status.error{color:#8b2e2e}.form-status.success{color:#315e40}.honeypot{position:absolute!important;left:-9999px!important;width:1px!important;height:1px!important;overflow:hidden!important}
footer{padding:68px 0 42px;border-top:1px solid var(--line)}.footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:40px}.footer-links{display:flex;gap:56px;justify-content:flex-end;text-align:right;font-size:14px}.footer-links>div{display:flex;flex-direction:column;gap:13px}.footer-bottom{margin-top:58px;font-size:12px;color:#777;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.reveal{opacity:1;transform:none;transition:opacity .65s ease,transform .65s ease}.reveal.is-visible{opacity:1;transform:none}
@media(max-width:1000px){.grid4,.category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.cardless-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.navlinks{gap:22px}}
@media(max-width:820px){.grid2,.grid3,.groundtruth-demo,.footer-grid,.two-col-list,.form-grid{grid-template-columns:1fr}.container{width:min(var(--max),calc(100% - 40px))}.navlinks{display:none}.menu-toggle{display:block}.mobile-menu{position:fixed;inset:0;background:#111;color:#fff;padding:110px 20px 30px;z-index:25;display:flex;flex-direction:column;gap:0;visibility:hidden;opacity:0;transform:translateY(-10px);transition:.2s}.mobile-menu.is-open{visibility:visible;opacity:1;transform:none}.mobile-menu a{font-size:clamp(2rem,9vw,4rem);line-height:1;padding:20px 0;border-top:1px solid rgba(255,255,255,.16);letter-spacing:-.035em}.mobile-menu a:last-child{border-bottom:1px solid rgba(255,255,255,.16)}.hero{min-height:94svh}.hero-inner{padding-top:132px}.scroll-cue{display:none}.context-row{grid-template-columns:110px 1fr}.comparison{grid-template-columns:1fr}.data-row{grid-template-columns:52px 1fr}.cardless-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.footer-links{justify-content:flex-start;text-align:left}.page-hero{padding-top:140px;min-height:60svh}.category-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.grid4,.category-grid{grid-template-columns:1fr}.display{font-size:clamp(2.65rem,13vw,4.25rem)}.h2{font-size:clamp(2.2rem,11vw,3.6rem)}.context-row{grid-template-columns:1fr;gap:8px}.closing-copy{font-size:clamp(2.45rem,12vw,4.5rem)}.actions{align-items:flex-start}.btn{width:100%}.hero .link{margin-top:4px}.footer-links{gap:42px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.reveal{opacity:1;transform:none}}


/* v1.4 canonical interaction and layout layer */
main,section,footer{max-width:100%;overflow-x:clip}
header.site-header{height:84px;position:fixed;inset:0 0 auto;z-index:60;border-bottom:1px solid transparent;transition:background-color .22s ease,color .22s ease,border-color .22s ease,box-shadow .22s ease;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
header.site-header.on-dark{color:#fff;background:rgba(17,18,17,.985);border-bottom-color:rgba(255,255,255,.10);box-shadow:0 1px 0 rgba(0,0,0,.08)}
header.site-header.on-light{color:#151615;background:rgba(250,249,246,.985);border-bottom-color:rgba(21,22,21,.14);box-shadow:0 1px 0 rgba(0,0,0,.04)}
header.site-header.on-light .nav-cta{border-color:rgba(21,22,21,.42);color:#151615}
header.site-header.on-light .nav-cta:hover{background:#151615;color:#f6f5f1;border-color:#151615}
header.site-header.on-light .menu-toggle{color:#151615}
header.site-header.on-dark .menu-toggle{color:#fff}
header.site-header .brand,header.site-header .navlinks>a{transition:color .18s ease,opacity .18s ease}
.hero + section{scroll-margin-top:84px}

.privacy-layout{grid-template-columns:minmax(0,1fr) minmax(360px,.88fr);gap:clamp(52px,7vw,108px)}
.privacy-layout .h2{max-width:720px}
.privacy-layout .context-grid{margin-top:42px}
.participation-section .container{max-width:1320px}
.participation-section .h2{max-width:1040px}
.participation-section .participation-callout{max-width:940px}
.participation-section .lede{max-width:760px}

/* Trust AI-agnostic section: editorial rather than billboard scale. */
.trust-ai-section{padding-top:clamp(82px,8vw,124px);padding-bottom:clamp(82px,8vw,124px)}
.trust-ai-section .grid2{grid-template-columns:minmax(0,.92fr) minmax(340px,.76fr);gap:clamp(52px,7vw,112px);align-items:start}
.trust-ai-section .h2{font-size:clamp(2.65rem,4.25vw,4.55rem);max-width:700px}
.trust-ai-section .lede{max-width:590px}

/* Progressive enhancement: content is visible unless JS explicitly enables motion. */
.motion-item,.motion-pair,.motion-sequence{opacity:1;transform:none}
.motion-enabled .motion-item:not(.is-visible){opacity:0}
.motion-enabled .motion-rise:not(.is-visible){transform:translateY(34px)}
.motion-enabled .motion-left:not(.is-visible){transform:translateX(-34px)}
.motion-enabled .motion-right:not(.is-visible){transform:translateX(34px)}
.motion-item{transition:opacity .62s cubic-bezier(.2,.72,.2,1),transform .62s cubic-bezier(.2,.72,.2,1),background-color .22s ease,border-color .22s ease;transition-delay:var(--motion-delay,0ms)}
.motion-item.is-visible{opacity:1;transform:none}

/* Paired observation -> ground-truth progression. */
.data-gap-grid{margin-top:54px}
.data-gap-pair{display:grid;grid-template-columns:1fr 1fr;gap:clamp(48px,7vw,110px);border-top:1px solid var(--line);padding:26px 0;font-size:1.08rem;transition:background-color .22s ease,border-color .22s ease}
.data-gap-pair:last-child{border-bottom:1px solid var(--line)}
.data-gap-pair span{display:block;transition:opacity .62s cubic-bezier(.2,.72,.2,1),transform .62s cubic-bezier(.2,.72,.2,1);transition-delay:var(--motion-delay,0ms)}
.data-gap-pair span:last-child{font-weight:540;transition-delay:calc(var(--motion-delay,0ms) + 130ms)}
.motion-enabled .data-gap-pair:not(.is-visible) span:first-child{opacity:0;transform:translateX(-30px)}
.motion-enabled .data-gap-pair:not(.is-visible) span:last-child{opacity:0;transform:translateX(30px)}
.data-gap-pair.is-visible span{opacity:1;transform:none}

/* Trajectory text becomes a staged sequence when JS tokenises it. */
.trajectory-token,.trajectory-arrow{display:inline-block;opacity:1;transform:none}
.motion-enabled .motion-sequence:not(.is-visible) .trajectory-token,
.motion-enabled .motion-sequence:not(.is-visible) .trajectory-arrow{opacity:0;transform:translateY(18px)}
.motion-sequence.is-visible .trajectory-token,.motion-sequence.is-visible .trajectory-arrow{opacity:1;transform:none}
.motion-sequence .trajectory-token,.motion-sequence .trajectory-arrow{transition:opacity .48s ease,transform .48s ease}
.motion-sequence .trajectory-token:nth-child(1){transition-delay:0ms}.motion-sequence .trajectory-arrow:nth-child(2){transition-delay:80ms}.motion-sequence .trajectory-token:nth-child(3){transition-delay:150ms}.motion-sequence .trajectory-arrow:nth-child(4){transition-delay:220ms}.motion-sequence .trajectory-token:nth-child(5){transition-delay:290ms}.motion-sequence .trajectory-arrow:nth-child(6){transition-delay:360ms}.motion-sequence .trajectory-token:nth-child(7){transition-delay:430ms}.motion-sequence .trajectory-arrow:nth-child(8){transition-delay:500ms}.motion-sequence .trajectory-token:nth-child(9){transition-delay:570ms}.motion-sequence .trajectory-arrow:nth-child(10){transition-delay:640ms}.motion-sequence .trajectory-token:nth-child(11){transition-delay:710ms}

/* Purposeful hover feedback. */
.principle,.data-row,.context-row,.statement-row,.quote-line,.enterprise-list .rule,.category-grid>span{transition:transform .22s ease,background-color .22s ease,border-color .22s ease,color .22s ease,padding-left .22s ease}
@media(hover:hover){
  .principle:hover{transform:translateY(-5px);border-color:rgba(21,22,21,.48)}
  .dark .principle:hover{border-color:rgba(246,245,241,.46)}
  .data-row:hover,.context-row:hover,.statement-row:hover,.quote-line:hover,.enterprise-list .rule:hover{transform:translateX(6px);background:rgba(21,22,21,.035);padding-left:9px}
  .dark .statement-row:hover,.dark .enterprise-list .rule:hover{background:rgba(255,255,255,.04)}
  .category-grid>span:hover{transform:translateY(-4px);color:#000}
  .data-gap-pair:hover{background:rgba(21,22,21,.03)}
}

/* Data hierarchy gains emphasis as rows enter. */
.data-row strong{transition:color .45s ease,transform .45s ease}
.motion-enabled .data-row.primary:not(.is-visible) strong{color:#777;transform:translateX(-8px)}
.data-row.primary.is-visible strong{transform:none}

@media(max-width:1000px){.privacy-layout{grid-template-columns:1fr 1fr;gap:44px}}
@media(max-width:820px){
  .privacy-layout{grid-template-columns:1fr}.privacy-layout .context-grid{margin-top:36px}.participation-section .container{max-width:none}
  .trust-ai-section .grid2{grid-template-columns:1fr;gap:30px}
  .data-gap-pair{grid-template-columns:1fr;gap:9px}
  .motion-enabled .data-gap-pair:not(.is-visible) span:last-child{transform:translateX(18px)}
}
@media(prefers-reduced-motion:reduce){
  .motion-item,.motion-pair,.motion-sequence,.trajectory-token,.trajectory-arrow,.data-gap-pair span{opacity:1!important;transform:none!important;transition:none!important}
}