:root{
  --bg:#ffffff;
  --text:#101014;
  --muted:#6f7077;
  --line:#e7e7e9;
  --soft:#fafafa;
  --rainbow:linear-gradient(100deg,#ff4f86 0%,#ff9850 19%,#f0d34e 35%,#55c983 50%,#42bfd1 65%,#4d93ff 82%,#7458e8 100%);
  --max:1470px;
  --radius:15px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#fff;color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}
::selection{background:rgba(76,147,255,.16)}
.gradient-text{display:inline-block;padding:.02em .05em .04em;background:var(--rainbow);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}

.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(18px)}
.concept-nav{height:70px;max-width:var(--max);margin:auto;padding:0 28px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:30px}
.concept-brand{display:flex;align-items:center;gap:13px;font-size:24px;font-weight:740;letter-spacing:-.045em}
.brand-mark{width:42px;height:42px;border-radius:12px;background:conic-gradient(from 220deg,#ff375f,#ff9f0a,#ffd60a,#30d158,#00c7be,#0a84ff,#635bff,#ff375f);position:relative;display:grid;place-items:center}
.brand-mark:after{content:"";position:absolute;inset:5px;border-radius:8px;background:rgba(255,255,255,.96)}
.brand-mark b{position:relative;z-index:2;font-size:19px;line-height:1;font-weight:800;color:#15151a}
.concept-links{display:flex;justify-content:center;align-items:center;gap:30px;white-space:nowrap}
.concept-links a{font-size:13px;color:#17171a;transition:.18s}.concept-links a:hover{color:#685ee8}
.nav-actions{display:flex;align-items:center;gap:18px}
.search-trigger{border:0;background:transparent;font-size:25px;line-height:1;cursor:pointer;padding:6px}
.header-cta{display:flex;align-items:center;justify-content:center;height:42px;padding:0 19px;border-radius:9px;background:#0c0c0e;color:white;font-size:13px;font-weight:600}
.nav-toggle{display:none;border:0;background:none;font-size:24px}
.search-panel{position:fixed;inset:0;z-index:200;background:rgba(255,255,255,.86);backdrop-filter:blur(14px);padding:100px 20px}
.search-dialog{position:relative;max-width:700px;margin:auto;background:white;border:1px solid var(--line);border-radius:18px;padding:26px;box-shadow:0 24px 80px rgba(0,0,0,.12)}
.search-dialog label{display:block;font-size:13px;font-weight:700;margin-bottom:9px}.search-dialog input{width:100%;height:54px;border:1px solid #dcdcdf;border-radius:10px;padding:0 16px;font-size:17px;outline:none}.search-dialog input:focus{border-color:#8f86ee;box-shadow:0 0 0 3px rgba(116,88,232,.08)}
.search-close{position:absolute;right:15px;top:10px;border:0;background:none;font-size:27px;color:#777;cursor:pointer}.search-results{display:grid;gap:7px;margin-top:14px}.search-result{padding:11px 12px;border-radius:9px;background:#fafafa;font-size:14px}.search-result:hover{background:#f2f2f3}

.concept-home{max-width:var(--max);margin:0 auto;padding:0 30px 46px}
.concept-hero{min-height:365px;display:grid;grid-template-columns:36% 64%;align-items:center;padding:34px 42px 26px}
.concept-hero-copy h1{font-size:54px;line-height:1.05;letter-spacing:-.058em;margin:0 0 22px;font-weight:710}
.concept-hero-copy p{max-width:430px;margin:0;color:#555861;font-size:17px;line-height:1.55}
.concept-buttons{display:flex;gap:14px;margin-top:28px}.concept-button{min-height:43px;padding:0 20px;border-radius:8px;display:inline-flex;align-items:center;font-size:13px;font-weight:600;border:1px solid #131315}.concept-button.dark{background:#0d0d0f;color:white}.concept-button.light{background:white}
.concept-hero-visual{position:relative;height:315px}.concept-brain-svg{width:76%;height:100%;display:block;margin-left:2%}
.concept-hero-note{position:absolute;right:1%;top:34%;display:flex;gap:14px;align-items:flex-start;width:185px}.rainbow-rule{width:2px;height:113px;border-radius:3px;background:var(--rainbow)}.concept-hero-note strong{display:block;font-size:15px;line-height:1.35;margin-bottom:12px}.concept-hero-note small{display:block;color:#85868c;line-height:1.45;font-size:12px}

.concept-card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.concept-card{min-height:198px;border:1px solid var(--line);border-radius:12px;background:white;padding:17px 16px;display:grid;grid-template-columns:116px 1fr;gap:14px;align-items:center;transition:border-color .18s,transform .18s,box-shadow .18s}
.concept-card:hover{border-color:#d6d6d9;transform:translateY(-2px);box-shadow:0 10px 28px rgba(0,0,0,.045)}
.concept-card-copy h2{font-size:20px;line-height:1.15;letter-spacing:-.035em;margin:0 0 10px;font-weight:640}.concept-card-copy p{color:#6c6e74;font-size:13px;line-height:1.48;margin:0 0 19px}.concept-card-copy>span{font-size:12px;font-weight:570}.concept-card-copy b{font-size:18px;margin-left:9px;font-weight:400}
.concept-art{height:146px;position:relative;display:grid;place-items:center;overflow:hidden}
.art-brain{border-radius:50%;border:2px solid transparent;background:linear-gradient(#fff,#fff) padding-box,var(--rainbow) border-box}.mini-brain{font-size:52px;background:var(--rainbow);-webkit-background-clip:text;color:transparent}.spark{position:absolute;background:var(--rainbow);-webkit-background-clip:text;color:transparent}.s1{top:8px;right:13px}.s2{bottom:10px;left:8px}
.art-desk{border-radius:6px;background:linear-gradient(135deg,#edd0a0,#f7e1b4)}.cup{position:absolute;left:9px;top:11px;font-size:34px;color:#5d4c3f}.note{position:absolute;right:12px;top:37px;background:#ffe86b;padding:8px 10px;font:italic 12px/1.2 Georgia;transform:rotate(-7deg);box-shadow:0 4px 9px rgba(0,0,0,.09)}.pen{position:absolute;left:35px;bottom:20px;font-size:34px;color:#2f7cb7}
.art-bubbles i{position:absolute;border-radius:50%;mix-blend-mode:multiply}.art-bubbles i:nth-child(1){width:68px;height:68px;background:rgba(255,79,134,.28);left:12px;top:28px}.art-bubbles i:nth-child(2){width:70px;height:70px;background:rgba(85,201,131,.3);right:8px;top:33px}.art-bubbles i:nth-child(3){width:68px;height:68px;background:rgba(66,191,209,.3);left:31px;bottom:18px}.art-bubbles span{position:absolute;right:10px;bottom:18px;color:#7558e8}
.art-books i{position:absolute;left:22px;width:75px;height:17px;border-radius:3px}.art-books i:nth-child(1){bottom:24px;background:#d3b795}.art-books i:nth-child(2){bottom:43px;background:#ad98c7}.art-books i:nth-child(3){bottom:62px;background:#8fc1cf}.art-books i:nth-child(4){bottom:81px;background:#e4c29d}.art-books span{position:absolute;bottom:8px;color:#5a9d6e;font-size:38px}
.art-heart{font-size:88px;background:var(--rainbow);-webkit-background-clip:text;color:transparent}
.art-partners span{position:absolute;font-size:57px;background:var(--rainbow);-webkit-background-clip:text;color:transparent}.art-partners span:nth-child(1){left:14px;top:27px}.art-partners span:nth-child(2){right:14px;top:27px}.art-partners .hands{left:36px!important;right:auto!important;top:auto!important;bottom:16px!important;font-size:55px!important}
.art-family span{position:absolute;font-size:46px;background:var(--rainbow);-webkit-background-clip:text;color:transparent}.art-family span:nth-child(1){left:2px;bottom:20px}.art-family span:nth-child(2){left:29px;top:24px}.art-family span:nth-child(3){right:29px;top:24px}.art-family span:nth-child(4){right:2px;bottom:20px}
.art-work .screen{position:absolute;left:12px;top:19px;font-size:64px;color:#333}.art-work .book{position:absolute;left:24px;bottom:13px;font-size:51px;color:#b8a487;transform:rotate(-8deg)}.art-work .plant{position:absolute;right:8px;top:26px;font-size:58px;color:#56a36a}

.concept-values{margin-top:25px;border:1px solid #ecebef;border-radius:11px;min-height:112px;padding:22px 34px;display:grid;grid-template-columns:1.5fr repeat(4,1fr);gap:32px;align-items:center;background:linear-gradient(100deg,rgba(255,79,134,.05),rgba(255,205,82,.05),rgba(66,191,209,.05),rgba(116,88,232,.05))}
.concept-quote{display:flex;align-items:flex-start;gap:16px}.quote-mark{font:700 54px/1 Georgia;color:#73757b}.concept-quote p{font-size:15px;line-height:1.55;margin:0}.concept-value{display:flex;align-items:flex-start;gap:11px}.value-icon{font-size:28px;line-height:1}.concept-value strong{display:block;font-size:12px;margin-bottom:5px}.concept-value small{display:block;color:#777981;font-size:11px;line-height:1.4}

/* Inner pages use the same exact quiet visual system */
.concept-inner, main:not(.concept-home){max-width:1200px;margin:0 auto;padding:0 28px 80px}
.page-hero{padding:70px 0 34px;max-width:850px}.page-hero .eyebrow{display:inline-block;color:#787a80;font-size:12px;font-weight:600;margin-bottom:14px}.page-hero .eyebrow i{display:none}.page-hero h1{font-size:58px;line-height:1;letter-spacing:-.055em;margin:0 0 20px;font-weight:700}.page-hero p{color:#666970;font-size:18px;line-height:1.6;margin:0;max-width:760px}
.section{padding:34px 0}.section.compact{padding-top:8px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:20px}.section-head h2{font-size:38px;letter-spacing:-.045em;margin:0}.section-head p{max-width:500px;color:var(--muted);line-height:1.55;margin:0}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.card,.panel{border:1px solid var(--line);border-radius:12px;background:#fff;box-shadow:none}.card{min-height:200px;padding:22px;display:flex;flex-direction:column;justify-content:space-between;transition:.18s}.card:hover{transform:translateY(-2px);border-color:#d6d6da;box-shadow:0 9px 24px rgba(0,0,0,.04)}.card h3{font-size:20px;letter-spacing:-.035em;margin:0 0 9px}.card p{color:var(--muted);font-size:14px;line-height:1.55}.card .arrow{align-self:flex-end;color:#777;font-size:18px}
.content-grid{display:grid;grid-template-columns:1.5fr .7fr;gap:14px}.panel{padding:28px}.panel h2{font-size:24px;letter-spacing:-.035em;margin:0 0 12px}.panel p,.panel li{color:#666970;line-height:1.7}.prose h2{margin-top:32px}.prose h2:first-child{margin-top:0}.topic-list{display:grid;gap:8px;margin-top:18px}.topic-link{display:flex;justify-content:space-between;gap:20px;padding:11px 0;border-bottom:1px solid #eee;font-size:14px}.topic-link:last-child{border:0}
.callout{padding:34px;border:1px solid #e9e8ed;border-radius:12px;background:linear-gradient(100deg,rgba(255,79,134,.05),rgba(255,205,82,.05),rgba(66,191,209,.05),rgba(116,88,232,.05));color:#111;box-shadow:none;overflow:hidden}.callout:after{display:none}.callout h2{font-size:34px;letter-spacing:-.045em;margin:0 0 10px}.callout p{color:#696b72;max-width:680px;line-height:1.6}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:43px;padding:0 18px;border-radius:8px;border:1px solid #171719;background:#fff;color:#111;font-size:13px;font-weight:600;box-shadow:none}.button.primary{background:#101012;color:#fff}.button:hover{transform:none;box-shadow:none;background:#fafafa}.button.primary:hover{background:#232326}
.neuro-visual{min-height:180px;border:1px solid var(--line)!important;border-radius:12px!important;box-shadow:none!important;background:linear-gradient(100deg,rgba(255,79,134,.04),rgba(255,205,82,.04),rgba(66,191,209,.04),rgba(116,88,232,.04))!important;margin:0 0 28px!important}.neuro-visual-copy{font-size:24px!important}.editorial-image{border-radius:12px!important;border:1px solid var(--line)!important;box-shadow:none!important}.editorial-image img{height:210px!important}
.visual-pair{gap:14px!important;margin-bottom:28px!important}.visual-pair .neuro-visual,.visual-pair .editorial-image{min-height:210px!important}
.field{display:grid;gap:7px}.field label,.form-group label{font-size:12px;font-weight:650}.field input,.field textarea,.form-group input,.form-group textarea,.form-group select{width:100%;border:1px solid #dedee2;border-radius:9px;background:#fff;padding:13px 14px;outline:none}.field input:focus,.field textarea:focus,.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:#8f86ee;box-shadow:0 0 0 3px rgba(116,88,232,.07)}
.site-footer{border-top:1px solid var(--line);padding:26px 28px;color:#8a8b90;font-size:12px}.footer-inner{max-width:1200px;margin:auto;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}

/* standalone simulators retain dark/full-screen behaviour */
.simulator-shell{min-height:100vh;background:#050507;color:#fff;overflow:hidden}.simulator-bar{position:fixed;top:0;left:0;right:0;z-index:20;padding:18px 22px;display:flex;justify-content:space-between;align-items:center;pointer-events:none;background:linear-gradient(#050507aa,transparent)}.simulator-brand{font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;opacity:.65}.simulator-hint{font-size:12px;opacity:.5}.simulator-canvas{position:fixed;inset:0;width:100%;height:100%;display:block}.simulator-center{position:fixed;inset:0;display:grid;place-items:center;text-align:center;pointer-events:none}.simulator-center h1{font-size:clamp(34px,6vw,74px);letter-spacing:-.07em;margin:0}.simulator-center p{font-size:15px;opacity:.55;margin:10px 0}

@media(max-width:1180px){
  .concept-links{gap:17px}.concept-links a{font-size:12px}
  .concept-card-grid{grid-template-columns:repeat(2,1fr)}
  .concept-values{grid-template-columns:1fr 1fr}
}
@media(max-width:900px){
  .concept-nav{grid-template-columns:auto auto;justify-content:space-between}.nav-actions{display:none}.nav-toggle{display:block}.concept-links{display:none}
  .concept-links.open{display:flex;position:absolute;top:69px;left:14px;right:14px;flex-direction:column;gap:0;background:white;border:1px solid var(--line);border-radius:12px;padding:8px;box-shadow:0 15px 40px rgba(0,0,0,.08)}
  .concept-links.open a{padding:12px 14px;font-size:14px}
  .concept-hero{grid-template-columns:1fr;padding:52px 12px 24px}.concept-hero-visual{height:320px;margin-top:12px}.concept-brain-svg{width:82%}
  .content-grid{grid-template-columns:1fr}.grid{grid-template-columns:1fr 1fr}
}
@media(max-width:620px){
  .concept-home{padding:0 14px 30px}.concept-brand{font-size:21px}.brand-mark{width:38px;height:38px}
  .concept-hero-copy h1{font-size:48px}.concept-hero-copy p{font-size:16px}.concept-hero-visual{height:270px}.concept-brain-svg{width:100%;margin:0}.concept-hero-note{display:none}
  .concept-card-grid{grid-template-columns:1fr}.concept-card{grid-template-columns:98px 1fr;min-height:180px}.concept-art{height:125px}.concept-values{grid-template-columns:1fr;padding:22px}.grid{grid-template-columns:1fr}
  .page-hero{padding-top:48px}.page-hero h1{font-size:44px}.concept-inner,main:not(.concept-home){padding:0 16px 60px}
  .visual-pair{grid-template-columns:1fr!important}
}

/* v6.1 — self-contained replacement for previous external editorial images */
.editorial-visual-placeholder{
  min-height:210px;
  border:1px solid var(--line);
  border-radius:12px;
  background:
    radial-gradient(circle at 20% 30%, rgba(255,79,134,.16), transparent 24%),
    radial-gradient(circle at 45% 55%, rgba(240,211,78,.14), transparent 24%),
    radial-gradient(circle at 70% 35%, rgba(66,191,209,.16), transparent 24%),
    radial-gradient(circle at 82% 70%, rgba(116,88,232,.13), transparent 22%),
    linear-gradient(135deg,#fff,#fafafa);
  position:relative;
  overflow:hidden;
}
.editorial-visual-placeholder:before,
.editorial-visual-placeholder:after{
  content:"";
  position:absolute;
  border-radius:50%;
  border:1px solid rgba(17,17,20,.08);
}
.editorial-visual-placeholder:before{
  width:180px;height:180px;left:12%;top:15%;
}
.editorial-visual-placeholder:after{
  width:120px;height:120px;right:14%;bottom:12%;
}



:root{
  --text:#111114;
  --muted:#707179;
  --line:#e8e8ea;
  --rainbow:linear-gradient(100deg,#ff4f86,#ff9850 19%,#f0d34e 35%,#55c983 50%,#42bfd1 66%,#4d93ff 82%,#7458e8);
  --max:1472px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#fff;color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}
.gradient-text{display:inline-block;padding:.01em .04em .04em;background:var(--rainbow);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}

/* header */
.concept-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(18px)}
.concept-nav{max-width:var(--max);height:70px;margin:auto;padding:0 32px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:28px}
.concept-brand{display:flex;align-items:center;gap:12px;font-size:24px;font-weight:720;letter-spacing:-.045em}
.brand-mark{width:42px;height:42px;border-radius:12px;background:conic-gradient(from 220deg,#ff375f,#ff9f0a,#ffd60a,#30d158,#00c7be,#0a84ff,#635bff,#ff375f);position:relative;display:grid;place-items:center}
.brand-mark:after{content:"";position:absolute;inset:5px;border-radius:8px;background:#fff}
.brand-mark b{position:relative;z-index:2;font-size:19px;font-weight:800}
.concept-links{display:flex;justify-content:center;gap:30px;align-items:center}.concept-links a{font-size:13px;color:#17171a}
.concept-links a:hover{color:#655be3}
.concept-contact{height:42px;padding:0 18px;display:inline-flex;align-items:center;border-radius:9px;background:#0b0b0d;color:#fff;font-size:13px;font-weight:600}
.nav-toggle{display:none;border:0;background:none;font-size:24px}

/* homepage */
.concept-home{max-width:var(--max);margin:auto;padding:0 31px 44px}
.concept-home-hero{display:grid;grid-template-columns:36% 64%;align-items:center;min-height:360px;padding:32px 42px 24px}
.concept-home-copy h1{font-size:54px;line-height:1.05;letter-spacing:-.058em;margin:0 0 22px;font-weight:700}
.concept-home-copy p{max-width:420px;color:#555861;font-size:17px;line-height:1.55;margin:0}
.concept-home-actions{display:flex;gap:13px;margin-top:27px}
.concept-btn{height:43px;padding:0 20px;border-radius:8px;display:inline-flex;align-items:center;border:1px solid #111;font-size:13px;font-weight:600}.concept-btn.black{background:#0b0b0d;color:#fff}.concept-btn.white{background:#fff}
.concept-home-art{height:310px;position:relative;display:flex;align-items:center}
.concept-home-art>img{display:block;width:78%;height:100%;object-fit:contain;object-position:center}
.concept-fact{position:absolute;right:1%;top:33%;display:flex;gap:14px;width:190px}.concept-fact i{width:2px;height:112px;background:var(--rainbow);border-radius:3px}.concept-fact strong{font-size:15px;line-height:1.35;display:block}.concept-fact span{display:block;color:#8a8b90;font-size:12px;line-height:1.45;margin-top:11px}

.concept-feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.concept-feature{min-height:202px;border:1px solid var(--line);border-radius:12px;padding:16px;display:grid;grid-template-columns:42% 58%;align-items:center;background:#fff;transition:.18s}
.concept-feature:hover{transform:translateY(-2px);border-color:#d7d7da;box-shadow:0 9px 26px rgba(0,0,0,.04)}
.concept-feature>img{width:100%;height:155px;object-fit:contain;display:block}
.concept-feature>div{padding:0 8px}.concept-feature h2{font-size:20px;line-height:1.15;letter-spacing:-.035em;margin:0 0 10px;font-weight:630}.concept-feature p{font-size:13px;color:#6d6f75;line-height:1.48;margin:0 0 19px}.concept-feature>div>span{font-size:12px;font-weight:560}
.concept-values{margin-top:25px;min-height:112px;padding:22px 32px;border:1px solid #ecebef;border-radius:11px;background:linear-gradient(100deg,rgba(255,79,134,.05),rgba(255,205,82,.05),rgba(66,191,209,.05),rgba(116,88,232,.05));display:grid;grid-template-columns:1.5fr repeat(4,1fr);gap:28px;align-items:center}
.concept-values-quote{display:flex;gap:15px;align-items:flex-start}.concept-values-quote b{font:700 52px/1 Georgia;color:#77797e}.concept-values-quote p{margin:0;font-size:15px;line-height:1.55}.concept-values>div:not(.concept-values-quote) strong{display:block;font-size:12px;margin-bottom:5px}.concept-values>div:not(.concept-values-quote) span{display:block;color:#797a80;font-size:11px;line-height:1.4}

/* all inner pages use the same visual hierarchy */
main{max-width:1200px;margin:0 auto;padding:0 28px 80px}
.concept-page-hero{display:grid;grid-template-columns:55% 45%;gap:40px;align-items:center;min-height:315px;padding:48px 0 32px}
.concept-page-copy .eyebrow{display:block;font-size:12px;font-weight:650;color:#7a7b80;margin-bottom:14px}.concept-page-copy .eyebrow i{display:none}
.concept-page-copy h1{font-size:58px;line-height:1.02;letter-spacing:-.055em;margin:0 0 18px;font-weight:700}
.concept-page-copy p{font-size:18px;line-height:1.6;color:#666970;max-width:700px;margin:0}
.concept-page-visual{height:240px;display:flex;align-items:center;justify-content:center}
.concept-page-visual img{width:100%;height:100%;object-fit:contain;display:block}

/* content below hero */
.content-grid{display:grid;grid-template-columns:1.5fr .7fr;gap:14px}.panel{border:1px solid var(--line);border-radius:12px;background:#fff;padding:27px;box-shadow:none}
.panel h2{font-size:24px;letter-spacing:-.035em;margin:0 0 12px}.panel p,.panel li{font-size:14px;line-height:1.7;color:#686a71}.prose h2{margin-top:31px}.prose h2:first-child{margin-top:0}
.topic-list{display:grid;gap:0;margin-top:15px}.topic-link{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid #eee;font-size:13px}.topic-link:last-child{border-bottom:0}
.section{padding:28px 0}.section.compact{padding-top:4px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.card{min-height:190px;border:1px solid var(--line);border-radius:12px;background:#fff;padding:21px;display:flex;flex-direction:column;justify-content:space-between;box-shadow:none}.card:hover{border-color:#d5d5d8;transform:translateY(-2px)}.card h3{font-size:20px;letter-spacing:-.035em;margin:0 0 9px}.card p{font-size:13px;color:#6b6d73;line-height:1.55}.card .arrow{align-self:flex-end;color:#777}
.callout{padding:30px;border:1px solid #ecebef;border-radius:12px;background:linear-gradient(100deg,rgba(255,79,134,.045),rgba(255,205,82,.045),rgba(66,191,209,.045),rgba(116,88,232,.045));color:#111;box-shadow:none}.callout:after{display:none}.callout h2{font-size:31px;letter-spacing:-.04em;margin:0 0 10px}.callout p{color:#686a71;line-height:1.6}.button{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 17px;border-radius:8px;border:1px solid #111;background:#fff;color:#111;font-size:13px;font-weight:600}.button.primary{background:#111;color:#fff}

/* forms */
.form,.form-group{display:grid;gap:12px}.field{display:grid;gap:7px;margin-bottom:14px}.field label,.form-group label{font-size:12px;font-weight:650}.field input,.field textarea,.field select,.form-group input,.form-group textarea,.form-group select{width:100%;border:1px solid #dedee2;border-radius:9px;background:#fff;padding:13px 14px;outline:none}.field input:focus,.field textarea:focus,.field select:focus{border-color:#8f86ee;box-shadow:0 0 0 3px rgba(116,88,232,.07)}
.captcha-wrapper{display:flex;align-items:center;gap:12px;font-size:13px;color:#666}.captcha-wrapper input{width:78px;border:1px solid #dedee2;border-radius:9px;padding:10px}.btn-group{display:flex;gap:10px}.form-status{font-size:13px}

/* footer */
.site-footer{border-top:1px solid var(--line);padding:25px 28px;color:#87888d;font-size:12px}.footer-inner{max-width:1200px;margin:auto;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}

/* hide obsolete decorative systems from earlier versions */
.neuro-visual,.editorial-visual-placeholder,.visual-pair,.editorial-image{display:none!important}

@media(max-width:1100px){
  .concept-links{gap:16px}.concept-links a{font-size:12px}
  .concept-feature-grid{grid-template-columns:repeat(2,1fr)}
  .concept-values{grid-template-columns:1fr 1fr}
}
@media(max-width:880px){
  .concept-nav{grid-template-columns:auto auto;justify-content:space-between}.concept-actions{display:none}.nav-toggle{display:block}.concept-links{display:none}
  .concept-links.open{display:flex;position:absolute;top:69px;left:14px;right:14px;padding:8px;background:#fff;border:1px solid var(--line);border-radius:12px;flex-direction:column;gap:0;box-shadow:0 16px 38px rgba(0,0,0,.08)}.concept-links.open a{padding:12px 14px;font-size:14px}
  .concept-home-hero,.concept-page-hero{grid-template-columns:1fr}.concept-home-art{height:290px}.concept-page-visual{height:210px}
  .content-grid{grid-template-columns:1fr}.grid{grid-template-columns:1fr 1fr}
}
@media(max-width:620px){
  .concept-home{padding:0 14px 32px}.concept-home-hero{padding:45px 5px 22px}.concept-home-copy h1{font-size:48px}.concept-home-copy p{font-size:16px}.concept-home-art{height:250px}.concept-home-art>img{width:100%}.concept-fact{display:none}
  .concept-feature-grid{grid-template-columns:1fr}.concept-feature{grid-template-columns:38% 62%;min-height:180px}.concept-feature>img{height:130px}.concept-values{grid-template-columns:1fr;padding:21px}
  main{padding:0 16px 60px}.concept-page-hero{padding:42px 0 23px;gap:15px}.concept-page-copy h1{font-size:44px}.concept-page-copy p{font-size:16px}.concept-page-visual{height:170px}.grid{grid-template-columns:1fr}
}

/* v8.3 — simulator hub title consistency */
.concept-page-copy h1,
.concept-page-copy h1 .gradient-text{
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Helvetica Neue",Arial,sans-serif;
  font-size:58px;
  font-weight:700;
  line-height:1.02;
  letter-spacing:-.055em;
}
.concept-page-copy h1 .gradient-text{
  vertical-align:baseline;
}
@media(max-width:620px){
  .concept-page-copy h1,
  .concept-page-copy h1 .gradient-text{
    font-size:44px;
  }
}

/* v8.4 — simulator intro matches standard page intro */
.concept-page-copy > p{
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","Helvetica Neue",Arial,sans-serif;
  font-size:18px;
  line-height:1.6;
  font-weight:400;
  color:#666970;
  max-width:700px;
}
@media(max-width:620px){
  .concept-page-copy > p{font-size:16px}
}


/* v8.5 — contact page redesign */
.contact-page-new{
  max-width:1120px;
  margin:0 auto;
  padding:0 28px 80px;
}
.contact-landing{
  padding:64px 0 38px;
  text-align:center;
}
.contact-heading{
  max-width:720px;
  margin:0 auto;
}
.contact-kicker{
  font-size:12px;
  font-weight:650;
  color:#7b7c82;
  margin-bottom:12px;
}
.contact-heading h1{
  margin:0;
  font-size:clamp(48px,6vw,66px);
  line-height:1.02;
  letter-spacing:-.055em;
  font-weight:700;
}
.contact-heading p{
  margin:14px 0 0;
  color:#676970;
  font-size:18px;
}
.contact-illustration-wrap{
  max-width:850px;
  margin:30px auto 12px;
  padding:0 12px;
}
.contact-illustration-wrap img{
  display:block;
  width:100%;
  max-height:290px;
  object-fit:contain;
}
.contact-entry-card{
  max-width:660px;
  margin:12px auto 0;
  border:1px solid var(--line);
  border-radius:14px;
  padding:24px 26px;
  background:#fff;
  display:grid;
  grid-template-columns:auto 1fr auto;
  gap:20px;
  align-items:center;
  text-align:left;
}
.contact-entry-icon{
  width:56px;
  height:56px;
  display:grid;
  place-items:center;
  border-radius:14px;
  border:1px solid #e6e6e9;
  font-size:26px;
  background:linear-gradient(135deg,rgba(255,79,134,.05),rgba(66,191,209,.05),rgba(116,88,232,.05));
}
.contact-entry-card h2{
  margin:0 0 6px;
  font-size:22px;
  letter-spacing:-.035em;
}
.contact-entry-card p{
  margin:0;
  color:#6b6d73;
  font-size:13px;
  line-height:1.55;
}
.contact-open-button{
  border:1px solid #111;
  border-radius:9px;
  min-height:43px;
  padding:0 17px;
  background:#111;
  color:#fff;
  font-size:13px;
  font-weight:600;
  cursor:pointer;
  white-space:nowrap;
}
.contact-open-button span{
  margin-left:8px;
  font-size:17px;
}
.contact-form-section{
  scroll-margin-top:90px;
  margin-top:34px;
}
.contact-form-section[hidden]{
  display:none !important;
}
.contact-form-header{
  display:flex;
  justify-content:space-between;
  gap:22px;
  align-items:flex-start;
  padding:0 4px 18px;
}
.contact-form-header h2{
  margin:0 0 9px;
  font-size:34px;
  letter-spacing:-.045em;
}
.contact-form-header p{
  margin:0;
  max-width:680px;
  color:#696b72;
  font-size:14px;
  line-height:1.6;
}
.contact-close-button{
  border:1px solid var(--line);
  width:42px;
  height:42px;
  border-radius:50%;
  background:#fff;
  font-size:26px;
  color:#666;
  cursor:pointer;
}
.contact-form-card{
  border:1px solid var(--line);
  border-radius:14px;
  padding:28px;
  background:#fff;
}
.contact-form-card form{
  display:grid;
  gap:15px;
}
.contact-form-card .field{
  display:grid;
  gap:7px;
  margin:0;
}
.contact-form-card .field label{
  font-size:12px;
  font-weight:650;
  color:#242428;
}
.contact-form-card .field input,
.contact-form-card .field textarea,
.contact-form-card .field select{
  width:100%;
  border:1px solid #dedee2;
  border-radius:10px;
  background:#fff;
  padding:0 14px;
  min-height:48px;
  font-size:15px;
  line-height:1.3;
  color:#17171a;
  outline:none;
}
.contact-form-card .field textarea{
  min-height:150px;
  padding-top:13px;
  resize:vertical;
}

/* Give the select the same physical size and polish as other fields. */
.contact-form-card .field select{
  appearance:none;
  -webkit-appearance:none;
  padding-right:46px;
  background-image:
    linear-gradient(45deg,transparent 50%,#696b72 50%),
    linear-gradient(135deg,#696b72 50%,transparent 50%);
  background-position:
    calc(100% - 21px) 20px,
    calc(100% - 15px) 20px;
  background-size:6px 6px,6px 6px;
  background-repeat:no-repeat;
  cursor:pointer;
}
.contact-form-card .field input:focus,
.contact-form-card .field textarea:focus,
.contact-form-card .field select:focus{
  border-color:#8f86ee;
  box-shadow:0 0 0 3px rgba(116,88,232,.07);
}
.contact-form-card .captcha-wrapper{
  display:flex;
  align-items:center;
  gap:12px;
  color:#666970;
  font-size:13px;
}
.contact-form-card .captcha-wrapper input{
  width:82px;
  min-height:44px;
  border:1px solid #dedee2;
  border-radius:10px;
  padding:0 12px;
}
.contact-form-card .btn-group{
  display:flex;
  gap:10px;
  justify-content:flex-end;
}
.contact-form-card .button{
  min-width:110px;
}
@media(max-width:720px){
  .contact-page-new{padding:0 16px 60px}
  .contact-landing{padding-top:46px}
  .contact-entry-card{
    grid-template-columns:auto 1fr;
  }
  .contact-open-button{
    grid-column:1 / -1;
    width:100%;
  }
  .contact-illustration-wrap img{
    max-height:230px;
  }
}


/* v8.6 — contact page aligned with the standard inner-page layout */
.contact-page-standard{
  max-width:1200px;
  margin:0 auto;
  padding:0 28px 80px;
}

.contact-standard-hero{
  min-height:315px;
  padding:48px 0 32px;
}

.contact-standard-visual{
  height:240px;
}

.contact-standard-visual img{
  width:100%;
  height:100%;
  object-fit:contain;
  display:block;
}

.contact-standard-card{
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  padding:24px 26px;
}

.contact-standard-copy{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}

.contact-standard-copy h2{
  margin:0 0 7px;
  font-size:24px;
  letter-spacing:-.035em;
}

.contact-standard-copy p{
  margin:0;
  max-width:680px;
  color:#696b72;
  font-size:14px;
  line-height:1.6;
}

.contact-standard-copy .contact-open-button{
  flex:0 0 auto;
}

.contact-form-wide{
  width:100%;
  margin-top:22px;
  scroll-margin-top:88px;
}

.contact-form-wide[hidden]{
  display:none !important;
}

.contact-form-wide .contact-form-header{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:24px;
  padding:24px 4px 16px;
}

.contact-form-wide .contact-form-header h2{
  margin:0 0 8px;
  font-size:32px;
  letter-spacing:-.045em;
}

.contact-form-wide .contact-form-header p{
  max-width:760px;
  margin:0;
  color:#696b72;
  font-size:14px;
  line-height:1.6;
}

.contact-form-wide .contact-form-card{
  width:100%;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  padding:28px;
}

.contact-form-wide form{
  width:100%;
  display:grid;
  gap:15px;
}

.contact-form-wide .field{
  display:grid;
  gap:7px;
  margin:0;
}

.contact-form-wide .field label{
  font-size:12px;
  font-weight:650;
  color:#242428;
}

.contact-form-wide .field input,
.contact-form-wide .field textarea,
.contact-form-wide .field select{
  width:100%;
  min-height:48px;
  border:1px solid #dedee2;
  border-radius:10px;
  background:#fff;
  padding:0 14px;
  color:#17171a;
  font-size:15px;
  line-height:1.3;
  outline:none;
}

.contact-form-wide .field textarea{
  min-height:165px;
  padding-top:13px;
  resize:vertical;
}

.contact-form-wide .field select{
  appearance:none;
  -webkit-appearance:none;
  padding-right:48px;
  background-image:
    linear-gradient(45deg, transparent 50%, #696b72 50%),
    linear-gradient(135deg, #696b72 50%, transparent 50%);
  background-position:
    calc(100% - 22px) 20px,
    calc(100% - 16px) 20px;
  background-size:6px 6px,6px 6px;
  background-repeat:no-repeat;
  cursor:pointer;
}

.contact-form-wide .field input:focus,
.contact-form-wide .field textarea:focus,
.contact-form-wide .field select:focus{
  border-color:#8f86ee;
  box-shadow:0 0 0 3px rgba(116,88,232,.07);
}

.contact-form-wide .captcha-wrapper{
  display:flex;
  align-items:center;
  gap:12px;
  color:#666970;
  font-size:13px;
}

.contact-form-wide .captcha-wrapper input{
  width:84px;
  min-height:44px;
  border:1px solid #dedee2;
  border-radius:10px;
  padding:0 12px;
}

.contact-form-wide .btn-group{
  display:flex;
  gap:10px;
  justify-content:flex-end;
}

.contact-form-wide .button{
  min-width:110px;
}

@media(max-width:760px){
  .contact-page-standard{
    padding:0 16px 60px;
  }

  .contact-standard-copy{
    align-items:flex-start;
    flex-direction:column;
  }

  .contact-standard-copy .contact-open-button{
    width:100%;
  }

  .contact-standard-visual{
    height:190px;
  }
}


/* v8.7 — contact page fully aligned with the standard site design, no hero graphic */
.contact-page-clean{
  max-width:1200px;
  margin:0 auto;
  padding:0 28px 80px;
}

.contact-clean-hero{
  max-width:820px;
  padding:70px 0 34px;
}

.contact-clean-hero .eyebrow{
  display:block;
  font-size:12px;
  font-weight:650;
  color:#7a7b80;
  margin-bottom:14px;
}

.contact-clean-hero .eyebrow i{
  display:none;
}

.contact-clean-hero h1{
  margin:0 0 18px;
  font-size:58px;
  line-height:1.02;
  letter-spacing:-.055em;
  font-weight:700;
}

.contact-clean-hero p{
  margin:0;
  max-width:720px;
  color:#666970;
  font-size:18px;
  line-height:1.6;
}

.contact-clean-card{
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  padding:24px 26px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}

.contact-clean-card h2{
  margin:0 0 7px;
  font-size:24px;
  letter-spacing:-.035em;
}

.contact-clean-card p{
  margin:0;
  max-width:720px;
  color:#696b72;
  font-size:14px;
  line-height:1.6;
}

.contact-clean-card .contact-open-button{
  flex:0 0 auto;
}

.contact-form-wide{
  width:100%;
  margin-top:22px;
  scroll-margin-top:88px;
}

.contact-form-wide[hidden]{
  display:none !important;
}

/* Keep the wide form visually consistent with content cards */
.contact-form-wide .contact-form-header{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:24px;
  padding:24px 4px 16px;
}

.contact-form-wide .contact-form-header h2{
  margin:0 0 8px;
  font-size:32px;
  letter-spacing:-.045em;
}

.contact-form-wide .contact-form-header p{
  max-width:760px;
  margin:0;
  color:#696b72;
  font-size:14px;
  line-height:1.6;
}

.contact-form-wide .contact-form-card{
  width:100%;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  padding:28px;
}

@media(max-width:760px){
  .contact-page-clean{
    padding:0 16px 60px;
  }

  .contact-clean-hero{
    padding:48px 0 26px;
  }

  .contact-clean-hero h1{
    font-size:44px;
  }

  .contact-clean-hero p{
    font-size:16px;
  }

  .contact-clean-card{
    align-items:flex-start;
    flex-direction:column;
  }

  .contact-clean-card .contact-open-button{
    width:100%;
  }
}


/* v8.8 — grouped top navigation */
.nav-dropdown{
  position:relative;
  display:flex;
  align-items:center;
}

.nav-dropdown-toggle{
  border:0;
  background:transparent;
  color:#17171a;
  padding:0;
  font-size:13px;
  font-weight:400;
  cursor:pointer;
  display:flex;
  align-items:center;
  gap:4px;
}

.nav-dropdown-toggle:hover,
.nav-dropdown.open .nav-dropdown-toggle{
  color:#655be3;
}

.nav-chevron{
  display:inline-block;
  font-size:14px;
  line-height:1;
  transition:transform .18s ease;
}

.nav-dropdown.open .nav-chevron{
  transform:rotate(180deg);
}

.nav-dropdown-menu{
  display:none;
  position:absolute;
  top:30px;
  left:50%;
  transform:translateX(-50%);
  width:260px;
  padding:8px;
  border:1px solid var(--line);
  border-radius:12px;
  background:rgba(255,255,255,.98);
  box-shadow:0 16px 42px rgba(0,0,0,.09);
  backdrop-filter:blur(18px);
  z-index:150;
}

.nav-dropdown.open .nav-dropdown-menu{
  display:grid;
}

.nav-dropdown-menu a{
  display:block;
  padding:11px 12px;
  border-radius:9px;
}

.nav-dropdown-menu a:hover{
  background:#f7f7f8;
}

.nav-dropdown-menu strong{
  display:block;
  margin-bottom:3px;
  font-size:13px;
  font-weight:650;
  color:#17171a;
}

.nav-dropdown-menu small{
  display:block;
  color:#85868c;
  font-size:11px;
  line-height:1.4;
}

@media(max-width:880px){
  .nav-dropdown{
    display:block;
    width:100%;
  }

  .nav-dropdown-toggle{
    width:100%;
    justify-content:space-between;
    padding:12px 14px;
    font-size:14px;
  }

  .nav-dropdown-menu{
    position:static;
    transform:none;
    width:100%;
    margin:0 0 5px;
    padding:4px 8px 8px 20px;
    border:0;
    border-radius:0;
    background:#fafafa;
    box-shadow:none;
  }

  .nav-dropdown-menu a{
    padding:10px 9px;
  }
}


/* v8.9 — stable grouped navigation */
html{
  overflow-y:scroll; /* prevents horizontal page shift when content height changes */
}

.nav-group{
  position:relative;
  display:flex;
  align-items:center;
}

.nav-group-toggle{
  border:0;
  background:transparent;
  padding:0;
  color:#17171a;
  font-size:13px;
  cursor:pointer;
  display:flex;
  align-items:center;
  gap:4px;
}

.nav-group-toggle:hover,
.nav-group.open .nav-group-toggle{
  color:#655be3;
}

.nav-group-toggle > span{
  transition:transform .18s ease;
}

.nav-group.open .nav-group-toggle > span{
  transform:rotate(180deg);
}

.nav-group-menu{
  display:none;
  position:absolute;
  top:31px;
  left:50%;
  transform:translateX(-50%);
  width:270px;
  padding:8px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  box-shadow:0 16px 42px rgba(0,0,0,.09);
  z-index:500;
}

.nav-group.open .nav-group-menu{
  display:grid;
}

.nav-group-menu a{
  display:block;
  padding:11px 12px;
  border-radius:9px;
}

.nav-group-menu a:hover{
  background:#f7f7f8;
}

.nav-group-menu strong{
  display:block;
  font-size:13px;
  font-weight:650;
  margin-bottom:3px;
}

.nav-group-menu small{
  display:block;
  color:#83858b;
  font-size:11px;
  line-height:1.4;
}

/* contact page uses same layout as other inner pages */
.contact-page-final{
  max-width:1200px;
  margin:0 auto;
  padding:0 28px 80px;
}

.contact-final-hero{
  min-height:315px;
  padding:48px 0 32px;
}

.contact-final-visual{
  height:240px;
}

.contact-final-visual img{
  display:block;
  width:100%;
  height:100%;
  object-fit:contain;
}

.contact-form-wide{
  width:100%;
  margin-top:22px;
  scroll-margin-top:88px;
}

.contact-form-wide[hidden]{
  display:none !important;
}

.contact-form-wide .contact-form-card{
  width:100%;
}

@media(max-width:880px){
  .nav-group{
    display:block;
    width:100%;
  }

  .nav-group-toggle{
    width:100%;
    justify-content:space-between;
    padding:12px 14px;
    font-size:14px;
  }

  .nav-group-menu{
    position:static;
    transform:none;
    width:100%;
    margin:0 0 5px;
    padding:4px 8px 8px 20px;
    border:0;
    border-radius:0;
    box-shadow:none;
    background:#fafafa;
  }
}


/* v9 — resources hub */
.resources-hub{max-width:1200px;margin:0 auto;padding:0 28px 80px}
.resources-hero{min-height:315px;padding:48px 0 30px}
.resource-jump{position:sticky;top:70px;z-index:40;display:flex;gap:8px;padding:10px 0 16px;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);overflow:auto}
.resource-jump a{flex:0 0 auto;border:1px solid var(--line);border-radius:999px;padding:9px 14px;background:#fff;font-size:12px;font-weight:600}
.resource-jump a:hover{border-color:#cfcfd4;background:#fafafa}
.resource-section{padding:46px 0 8px;scroll-margin-top:125px}
.resource-section-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:18px}
.resource-section-head h2{font-size:34px;letter-spacing:-.045em;margin:7px 0 0}
.resource-section-head>p{max-width:430px;margin:0;color:#777980;font-size:13px;line-height:1.55;text-align:right}
.resource-label{display:inline-flex;border-radius:999px;padding:6px 9px;font-size:10px;font-weight:700;letter-spacing:.035em;text-transform:uppercase}
.resource-label.official{background:#eef4ff;color:#426aa8}.resource-label.watch{background:#fff0f4;color:#a74667}.resource-label.practical{background:#eef9f2;color:#3f7954}.resource-label.reading{background:#f3efff;color:#6953a8}
.resource-feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.resource-feature-card{min-height:235px;border:1px solid var(--line);border-radius:12px;padding:23px;background:#fff;display:flex;flex-direction:column;transition:.18s}
.resource-feature-card:hover{transform:translateY(-2px);border-color:#d2d2d7;box-shadow:0 9px 26px rgba(0,0,0,.035)}
.resource-mini-icon{display:inline-flex;align-self:flex-start;min-width:44px;height:34px;padding:0 9px;align-items:center;justify-content:center;border-radius:9px;background:linear-gradient(120deg,rgba(255,79,134,.08),rgba(66,191,209,.08),rgba(116,88,232,.08));font-size:10px;font-weight:800;letter-spacing:.05em}
.resource-feature-card h3{font-size:21px;letter-spacing:-.035em;margin:20px 0 9px}.resource-feature-card p{font-size:13px;line-height:1.6;color:#6b6d73;margin:0 0 18px}.resource-feature-card b{font-size:12px;margin-top:auto}
.resource-note{border:1px solid #ecebef;border-radius:10px;padding:13px 16px;margin-bottom:14px;background:#fcfcfd;color:#74767c;font-size:12px;line-height:1.55}.resource-note strong{color:#33343a}
.resource-video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.resource-video-card{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff;transition:.18s}.resource-video-card:hover{transform:translateY(-2px);border-color:#d3d3d8;box-shadow:0 9px 26px rgba(0,0,0,.035)}
.video-thumb{height:126px;position:relative;display:grid;place-items:center;background:linear-gradient(135deg,#fff3f6,#fff9eb 32%,#eefaf7 62%,#f2efff)}
.video-thumb:before,.video-thumb:after{content:"";position:absolute;border-radius:50%;border:1px solid rgba(17,17,20,.07)}.video-thumb:before{width:82px;height:82px}.video-thumb:after{width:118px;height:118px}
.video-play{position:relative;z-index:2;width:45px;height:45px;border-radius:50%;display:grid;place-items:center;padding-left:3px;background:#111;color:#fff;font-size:14px}
.video-topic{position:absolute;left:11px;bottom:10px;border:1px solid rgba(0,0,0,.06);border-radius:999px;padding:5px 8px;background:rgba(255,255,255,.85);font-size:9px;font-weight:700}
.video-copy{padding:17px}.video-copy small{color:#8a8b90;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.04em}.video-copy h3{font-size:17px;line-height:1.2;letter-spacing:-.025em;margin:7px 0 8px}.video-copy p{color:#6d6f75;font-size:12px;line-height:1.55;margin:0 0 16px}.video-link{font-size:11px;font-weight:650}
.resource-link-list{border:1px solid var(--line);border-radius:12px;overflow:hidden}.resource-link-list>a{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:17px 20px;border-bottom:1px solid var(--line);background:#fff}.resource-link-list>a:last-child{border-bottom:0}.resource-link-list>a:hover{background:#fafafa}.resource-link-list strong{display:block;font-size:14px;margin-bottom:4px}.resource-link-list span{display:block;color:#7a7c82;font-size:12px;line-height:1.45}.resource-link-list b{font-size:18px;font-weight:400}
.resource-reading-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.resource-reading-card{border:1px solid var(--line);border-radius:12px;padding:22px}.resource-reading-card>span{font-size:10px;color:#85868c;font-weight:700;text-transform:uppercase}.resource-reading-card h3{font-size:20px;letter-spacing:-.03em;margin:12px 0 8px}.resource-reading-card p{font-size:13px;color:#6d6f75;line-height:1.55}.resource-reading-card a{font-size:12px;font-weight:650}
.resource-disclaimer{margin-top:45px;border:1px solid #ecebef;border-radius:12px;padding:23px 25px;background:linear-gradient(100deg,rgba(255,79,134,.04),rgba(255,205,82,.04),rgba(66,191,209,.04),rgba(116,88,232,.04))}.resource-disclaimer strong{font-size:14px}.resource-disclaimer p{max-width:850px;margin:7px 0 0;color:#6b6d73;font-size:13px;line-height:1.6}
@media(max-width:900px){.resource-video-grid{grid-template-columns:1fr 1fr}.resource-feature-grid,.resource-reading-grid{grid-template-columns:1fr}.resource-section-head{align-items:flex-start;flex-direction:column;gap:8px}.resource-section-head>p{text-align:left}}
@media(max-width:620px){.resources-hub{padding:0 16px 60px}.resource-video-grid{grid-template-columns:1fr}.resource-jump{top:69px}.resource-section{padding-top:35px}.resource-section-head h2{font-size:29px}}


/* v9.1 — grouped navigation + page anchor bars */
.concept-links{
  gap:22px;
}

.nav-group-menu{
  max-height:min(70vh,620px);
  overflow:auto;
}

.nav-group-menu a{
  min-width:0;
}

.nav-group-menu strong{
  white-space:nowrap;
}

.page-anchor-nav{
  position:sticky;
  top:70px;
  z-index:35;
  display:flex;
  gap:8px;
  padding:10px 0 14px;
  margin:0 0 18px;
  overflow-x:auto;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px);
  scrollbar-width:none;
}

.page-anchor-nav::-webkit-scrollbar{
  display:none;
}

.page-anchor-nav a{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  min-height:34px;
  padding:0 13px;
  border:1px solid var(--line);
  border-radius:999px;
  background:#fff;
  color:#35363b;
  font-size:11px;
  font-weight:600;
  white-space:nowrap;
}

.page-anchor-nav a:hover{
  border-color:#d0d0d5;
  background:#fafafa;
}

[id]{
  scroll-margin-top:130px;
}

@media(max-width:1180px){
  .concept-links{gap:14px}
  .nav-group-toggle,
  .concept-links>a{font-size:12px}
}

@media(max-width:880px){
  .page-anchor-nav{
    top:69px;
    margin-left:-2px;
    margin-right:-2px;
  }

  .nav-group-menu strong{
    white-space:normal;
  }
}


/* v9.2 — authoritative menu behaviour */
.concept-header{
  overflow:visible !important;
}

.concept-nav{
  overflow:visible !important;
}

.concept-links{
  overflow:visible !important;
}

.nav-group{
  position:relative !important;
  display:flex;
  align-items:center;
}

.nav-group-toggle{
  appearance:none;
  -webkit-appearance:none;
  border:0 !important;
  background:transparent !important;
  padding:0 !important;
  margin:0;
  color:#17171a;
  font:inherit;
  font-size:13px;
  cursor:pointer;
  display:flex;
  align-items:center;
  gap:5px;
  white-space:nowrap;
}

.nav-group-toggle:hover,
.nav-group.open > .nav-group-toggle{
  color:#655be3;
}

.nav-group-toggle > span{
  display:inline-block;
  transition:transform .16s ease;
}

.nav-group.open > .nav-group-toggle > span{
  transform:rotate(180deg);
}

.nav-group-menu{
  display:none !important;
  position:absolute !important;
  top:calc(100% + 16px) !important;
  left:50% !important;
  transform:translateX(-50%) !important;
  width:280px !important;
  max-height:min(72vh,620px);
  overflow:auto;
  padding:8px !important;
  margin:0 !important;
  border:1px solid var(--line) !important;
  border-radius:12px !important;
  background:#fff !important;
  box-shadow:0 18px 46px rgba(0,0,0,.10) !important;
  z-index:1000 !important;
}

.nav-group.open > .nav-group-menu{
  display:grid !important;
}

.nav-group-menu::before{
  content:"";
  position:absolute;
  top:-16px;
  left:0;
  right:0;
  height:16px;
}

.nav-group-menu a{
  display:block !important;
  padding:11px 12px !important;
  border-radius:9px !important;
  color:#17171a !important;
}

.nav-group-menu a:hover{
  background:#f6f6f7 !important;
}

.nav-group-menu strong{
  display:block;
  margin:0 0 3px;
  font-size:13px;
  font-weight:650;
}

.nav-group-menu small{
  display:block;
  color:#85868c;
  font-size:11px;
  line-height:1.4;
}

/* Desktop hover is an enhancement; click still works. */
@media (min-width:881px){
  .nav-group:hover > .nav-group-menu{
    display:grid !important;
  }
}

@media (max-width:880px){
  .concept-links.nav-links{
    overflow:visible !important;
  }

  .nav-group{
    display:block !important;
    width:100%;
  }

  .nav-group-toggle{
    width:100%;
    padding:12px 14px !important;
    justify-content:space-between;
    font-size:14px;
  }

  .nav-group-menu{
    position:static !important;
    transform:none !important;
    width:100% !important;
    max-height:none !important;
    margin:0 0 5px !important;
    padding:4px 8px 8px 20px !important;
    border:0 !important;
    border-radius:0 !important;
    background:#fafafa !important;
    box-shadow:none !important;
  }

  .nav-group:not(.open) > .nav-group-menu{
    display:none !important;
  }

  .nav-group.open > .nav-group-menu{
    display:grid !important;
  }
}


/* v9.3 — simulator categories */
.simulator-jump{
  position:sticky;
  top:70px;
  z-index:34;
  display:flex;
  gap:8px;
  padding:10px 0 14px;
  margin-bottom:10px;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px);
  overflow-x:auto;
  scrollbar-width:none;
}
.simulator-jump::-webkit-scrollbar{display:none}
.simulator-jump a{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  min-height:34px;
  padding:0 13px;
  border:1px solid var(--line);
  border-radius:999px;
  background:#fff;
  font-size:11px;
  font-weight:600;
  white-space:nowrap;
}
.simulator-jump a:hover{
  border-color:#d0d0d5;
  background:#fafafa;
}
.sim-category{
  padding:38px 0 12px;
  scroll-margin-top:125px;
}
.sim-category-head{
  display:flex;
  justify-content:space-between;
  align-items:end;
  gap:28px;
  margin-bottom:17px;
}
.sim-category-head h2{
  margin:8px 0 0;
  font-size:31px;
  letter-spacing:-.043em;
}
.sim-category-head>p{
  max-width:460px;
  margin:0;
  color:#777980;
  font-size:13px;
  line-height:1.55;
  text-align:right;
}
.sim-category-grid{
  grid-template-columns:repeat(3,1fr);
}
.sim-category-grid .sim-card{
  min-height:245px;
}

@media(max-width:900px){
  .sim-category-head{
    flex-direction:column;
    align-items:flex-start;
    gap:8px;
  }
  .sim-category-head>p{text-align:left}
  .sim-category-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:620px){
  .simulator-jump{top:69px}
  .sim-category{padding-top:30px}
  .sim-category-grid{grid-template-columns:1fr}
}


/* v9.4 — dropdown hover bridge / forgiving hover behaviour */
@media (min-width:881px){
  .nav-group{
    padding-bottom:16px;
    margin-bottom:-16px;
  }

  .nav-group-menu{
    top:100% !important;
  }

  /* Invisible bridge keeps :hover active while pointer travels into menu */
  .nav-group::after{
    content:"";
    position:absolute;
    left:-12px;
    right:-12px;
    top:100%;
    height:18px;
    pointer-events:auto;
  }

  .nav-group:hover > .nav-group-menu,
  .nav-group:focus-within > .nav-group-menu,
  .nav-group.open > .nav-group-menu{
    display:grid !important;
  }

  .nav-group-menu{
    margin-top:0 !important;
  }
}

@media (min-width:881px){
  .nav-group.hover-open > .nav-group-menu{
    display:grid !important;
  }
}


/* v9.5 — desktop dropdowns are hover-only, never latched */
@media (min-width:881px){
  .nav-group.open > .nav-group-menu,
  .nav-group.hover-open > .nav-group-menu{
    display:none !important;
  }

  .nav-group:hover > .nav-group-menu,
  .nav-group:focus-within > .nav-group-menu{
    display:grid !important;
  }

  .nav-group.open > .nav-group-toggle > span,
  .nav-group.hover-open > .nav-group-toggle > span{
    transform:none !important;
  }

  .nav-group:hover > .nav-group-toggle > span,
  .nav-group:focus-within > .nav-group-toggle > span{
    transform:rotate(180deg) !important;
  }

  .nav-group:hover > .nav-group-toggle,
  .nav-group:focus-within > .nav-group-toggle{
    color:#655be3;
  }
}


/* v9.6 — site-wide coloured category tags */
.page-tag{
  display:inline-flex;
  align-items:center;
  min-height:28px;
  padding:0 10px;
  margin-bottom:14px;
  border-radius:999px;
  font-size:10px;
  font-weight:750;
  letter-spacing:.035em;
  text-transform:uppercase;
  border:1px solid transparent;
  white-space:nowrap;
}

.tag-pink{
  background:#fff0f4;
  color:#a74667;
  border-color:#f7d8e2;
}
.tag-rose{
  background:#fff1f3;
  color:#a74858;
  border-color:#f5d9df;
}
.tag-orange{
  background:#fff5ea;
  color:#a8612f;
  border-color:#f1dfcc;
}
.tag-amber{
  background:#fff8df;
  color:#8f6d1e;
  border-color:#efe3b6;
}
.tag-green{
  background:#eef9f2;
  color:#3f7954;
  border-color:#d9ecdf;
}
.tag-teal{
  background:#edf9f8;
  color:#377a75;
  border-color:#d6ece9;
}
.tag-blue{
  background:#eef4ff;
  color:#426aa8;
  border-color:#dce7fb;
}
.tag-purple{
  background:#f3efff;
  color:#6953a8;
  border-color:#e4ddf8;
}
.tag-violet{
  background:#f4f1ff;
  color:#6b59b3;
  border-color:#e3ddfa;
}

/* keep tag spacing aligned with page titles */
.concept-page-copy .page-tag,
.contact-clean-hero .page-tag,
.resources-hub .page-tag,
.page-hero .page-tag{
  margin-bottom:14px;
}