/* Metalevels site styles. Ported from reference/metalevels-website.html (brand pack v1.0).
   Colours, type and spacing come from tokens.css (loaded first). Only the aliases below map
   the reference's names onto the role tokens: no new values. */
:root{
  --accent2:var(--ml-navy);
  --band-btn:var(--band-button);
  --band-btn-ink:var(--band-button-ink);
  --band-em:var(--band-emphasis);
  --logo-line:var(--ml-navy);
  --display:var(--font-display);
  --sans:var(--font-body);
  --mono:var(--font-mono);
  color-scheme:light;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased}
h1,h2,h3,p{margin:0}
h1,h2,h3{text-wrap:balance}
a{color:var(--accent);text-underline-offset:4px}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:max(20px,4vw)}
.eyebrow{font:600 12px/1.3 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.meta{font:500 13px/1.5 var(--mono);letter-spacing:.03em;color:var(--muted)}
.display{font-family:var(--display);font-weight:400;letter-spacing:-.01em;line-height:1.02}
.display em{font-style:italic;color:var(--accent)}
.lead{font-size:clamp(18px,1.6vw,20px);color:var(--muted);max-width:60ch}
.btn{display:inline-flex;align-items:center;gap:10px;min-height:48px;padding:0 22px;border-radius:999px;background:var(--accent);color:var(--on-accent);font:600 15px var(--sans);text-decoration:none;border:1px solid var(--accent);cursor:pointer;transition:transform .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px -10px var(--accent)}
.btn .ar{transition:transform .25s}
.btn:hover .ar,.more:hover .ar{transform:translateX(4px)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.band .btn.ghost{color:var(--band-ink);border-color:var(--band-ink)}
.more{font-weight:600;text-decoration:none;display:inline-flex;gap:8px;align-items:center}
.more .ar{display:inline-block;transition:transform .25s}

/* header */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:var(--bg);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--logo-line);font:700 17px/1 'Montserrat','Helvetica Neue',Arial,sans-serif;letter-spacing:.14em;text-transform:uppercase}
.brand .mark{width:42px;height:58px;display:block;flex-shrink:0}
.brand .mark svg{width:100%;height:100%;display:block;overflow:visible}
@keyframes lv{from{transform:translateY(-10px);opacity:0}}
.nav{display:flex;gap:30px;align-items:center}
.nav a{color:var(--ink);text-decoration:none;font-weight:500;font-size:15px;position:relative;padding-block:6px}
.nav a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .3s}
.nav a:hover::after,.nav a[aria-current="page"]::after{transform:scaleX(1)}
.menu-btn{display:none;width:48px;height:48px;border-radius:50%;border:1px solid var(--ink);background:transparent;color:var(--ink);cursor:pointer;align-items:center;justify-content:center}
.mnav{border-top:1px solid var(--line);padding-block:8px 16px}
.mnav a{display:flex;align-items:center;min-height:48px;color:var(--ink);text-decoration:none;font-size:20px;font-family:var(--display)}
@media (max-width:900px){.nav,.top .btn{display:none}.menu-btn{display:inline-flex}}

/* views */
.view{animation:viewIn .6s cubic-bezier(.2,.8,.2,1) both}
@keyframes viewIn{from{opacity:0;transform:translateY(14px)}}
section{padding-block:clamp(64px,9vw,120px)}
.alt{background:var(--surface)}
.sec-head{display:flex;justify-content:space-between;align-items:end;gap:24px;flex-wrap:wrap;margin-bottom:44px}
.sec-head h2{font-size:clamp(36px,4.6vw,56px)}

/* hero band */
.band{background:var(--band);color:var(--band-ink);position:relative;overflow:hidden}
.band .eyebrow,.band .meta{color:var(--band-muted)}
.band .lead{color:var(--band-muted)}
.band .btn{background:var(--band-btn);color:var(--band-btn-ink);border-color:var(--band-btn)}.band .btn:hover{box-shadow:0 8px 22px -10px var(--band-btn)}.band .display em{color:var(--band-em)}.band .btn.ghost{background:transparent;color:var(--band-ink);border-color:var(--band-ink)}.band .btn.ghost:hover{box-shadow:none}
.hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);min-height:600px}
.hero-copy{position:relative;z-index:2;display:flex;flex-direction:column;justify-content:center;gap:26px;padding-block:88px;padding-right:32px}
.hero h1{font-size:clamp(46px,6.4vw,88px)}
.hero h1 .w{display:inline-block;animation:rise .9s cubic-bezier(.2,.8,.2,1) both}
@keyframes rise{from{opacity:0;transform:translateY(.45em)}}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.hero-art{position:relative}
.hero-art canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.hero-logo{position:absolute;inset:0;display:grid;place-items:center;z-index:1;pointer-events:none}
.hero-logo svg{height:min(82%,440px);width:auto;max-width:92%;display:block;filter:drop-shadow(0 18px 40px rgba(0,0,0,.18))}
@media (max-width:900px){.hero{grid-template-columns:minmax(0,1fr);min-height:0}.hero-copy{padding-block:56px 24px;padding-right:0}.hero-art{height:260px;margin-inline:calc(-1*max(20px,4vw))}}

/* proof */
.proof{padding-block:36px;border-bottom:1px solid var(--line)}
.proof .wrap{display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap}
.stats{display:flex;gap:clamp(24px,5vw,64px);flex-wrap:wrap}
.stat b{display:block;font:400 44px/1 var(--display);font-variant-numeric:tabular-nums}
.stat span{font-size:14px;color:var(--muted)}
.logos{display:flex;gap:12px;flex-wrap:wrap}
.logo-ph{width:112px;height:44px;border:1px dashed var(--line);border-radius:6px;display:grid;place-items:center;font:500 11px var(--mono);color:var(--muted)}

/* approach */
.approach-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:clamp(32px,6vw,96px);align-items:start}
.approach-grid>*{min-width:0}
@media (max-width:760px){.approach-grid{grid-template-columns:minmax(0,1fr)}}
.approach-grid h2{font-size:clamp(34px,4.2vw,52px)}
.steps{position:relative;display:grid;gap:18px}
.steps svg.track{position:absolute;left:23px;top:24px;width:4px;height:calc(100% - 48px);overflow:visible}
.steps svg.track path{stroke:var(--accent2);stroke-width:3;fill:none;stroke-dasharray:1;stroke-dashoffset:1;transition:stroke-dashoffset 1.6s cubic-bezier(.6,0,.2,1)}
.steps.on svg.track path{stroke-dashoffset:0}
.step{display:grid;grid-template-columns:48px minmax(0,1fr);gap:20px;align-items:start}
.step .dot{width:48px;height:48px;border-radius:50%;background:var(--bg);border:2px solid var(--accent);display:grid;place-items:center;font:600 14px var(--mono);color:var(--accent);position:relative;z-index:1}
.step h3{font-size:22px;font-weight:600;margin-bottom:6px}
.step p{color:var(--muted)}

/* services cards */
.svc-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
@media (max-width:760px){.svc-grid{grid-template-columns:minmax(0,1fr)}}
.svc{display:flex;flex-direction:column;gap:14px;padding:30px;border-radius:18px;background:var(--bg);border:1px solid var(--line);text-decoration:none;color:var(--ink);transition:transform .3s,border-color .3s,box-shadow .3s}
.svc:hover{transform:translateY(-4px);border-color:var(--accent);box-shadow:0 24px 40px -28px var(--accent)}
.svc h3{font-size:26px;font-family:var(--display);font-weight:400}
.svc p{color:var(--muted)}
.icon{width:56px;height:56px}
.icon *{transition:transform .5s cubic-bezier(.2,.8,.2,1),opacity .4s}
.svc:hover .i-arch .n2{transform:translate(6px,-4px)}.svc:hover .i-arch .n3{transform:translate(-5px,5px)}
.svc:hover .i-reg .s1{transform:translateY(-6px)}.svc:hover .i-reg .s2{transform:translateY(-3px)}
.svc:hover .i-std .ck{stroke-dashoffset:0}
.i-std .ck{stroke-dasharray:30;stroke-dashoffset:30;transition:stroke-dashoffset .6s}
.svc:hover .i-mes .b1{transform:scaleY(1.5)}.svc:hover .i-mes .b3{transform:scaleY(.7)}
.i-mes rect{transform-box:fill-box;transform-origin:bottom}

/* work */
.work-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
@media (max-width:900px){.work-grid{grid-template-columns:minmax(0,1fr)}}
.work{display:flex;flex-direction:column;gap:12px;text-decoration:none;color:var(--ink)}
.work .viz{aspect-ratio:16/10;max-width:100%;border-radius:14px;overflow:hidden;background:var(--surface);position:relative;transition:transform .4s}
.work:hover .viz{transform:scale(1.02)}
.work canvas{width:100%;height:100%;display:block}
.work h3{font-size:24px;font-family:var(--display);font-weight:400}
.work p{color:var(--muted);font-size:16px}

/* feature band */
.feature{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:clamp(32px,5vw,72px);align-items:center}
.feature .viz{aspect-ratio:16/10;max-width:100%;border-radius:16px;overflow:hidden;background:var(--surface)}
.feature canvas{width:100%;height:100%;display:block}
.feature h2{font-size:clamp(36px,4.4vw,56px)}
@media (max-width:900px){.feature{grid-template-columns:minmax(0,1fr)}}

/* insights */
.ins-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
@media (max-width:900px){.ins-grid{grid-template-columns:minmax(0,1fr)}}
.ins{padding:26px;border-top:2px solid var(--ink);display:flex;flex-direction:column;gap:14px;text-decoration:none;color:var(--ink);transition:border-color .3s}
.ins:hover{border-color:var(--accent)}
.ins h3{font-size:22px;font-weight:600;line-height:1.25}

/* cta */
.cta .wrap{display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap}
.cta h2{font-size:clamp(34px,4.4vw,56px);max-width:18ch}

/* footer */
footer{background:var(--surface);padding-block:64px 36px;border-top:1px solid var(--line)}
.f-grid{display:grid;grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,1fr));gap:32px}
@media (max-width:760px){.f-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.f-grid>div:first-child{grid-column:1/-1}}
.f-grid a{display:block;color:var(--ink);text-decoration:none;padding-block:5px}
.f-grid a:hover{color:var(--accent)}
.legal{margin-top:44px;padding-top:20px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.versions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.versions a{display:inline-flex;align-items:center;gap:6px;min-height:36px;padding:0 12px;border:1px solid var(--line);border-radius:999px;font:500 12px var(--mono);color:var(--ink);text-decoration:none}
.versions a[aria-current="true"]{border-color:var(--ink)}
.versions i{width:12px;height:12px;border-radius:50%;display:inline-block}

/* inner pages */
.page-head{padding-block:clamp(56px,8vw,104px) clamp(40px,5vw,64px);border-bottom:1px solid var(--line)}
.page-head h1{font-size:clamp(44px,6vw,80px);max-width:16ch;margin-block:14px 20px}
.svc-detail{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:clamp(28px,5vw,72px);padding-block:56px;border-bottom:1px solid var(--line)}
.svc-detail h2{font-size:clamp(32px,3.6vw,44px);margin-block:12px 14px}
.cols2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.box{padding:24px;border-radius:14px;background:var(--surface)}
.box ul{margin:10px 0 0;padding-left:18px;color:var(--muted)}
@media (max-width:760px){.svc-detail,.cols2{grid-template-columns:minmax(0,1fr)}}
.models{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
@media (max-width:900px){.models{grid-template-columns:minmax(0,1fr)}}
details{border-top:1px solid var(--line);padding-block:8px}
details:last-child{border-bottom:1px solid var(--line)}
summary{cursor:pointer;min-height:56px;display:flex;align-items:center;justify-content:space-between;font-size:19px;font-weight:500;list-style:none}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font:400 28px var(--display);transition:transform .3s}
details[open] summary::after{transform:rotate(45deg)}
details p{color:var(--muted);padding-bottom:16px;max-width:65ch}

.case{display:grid;grid-template-columns:260px minmax(0,1fr);gap:clamp(32px,6vw,88px);padding-block:64px}
@media (max-width:900px){.case{grid-template-columns:minmax(0,1fr)}}
.facts div{padding-block:14px;border-top:1px solid var(--line);display:grid;gap:2px}
.story{display:grid;gap:40px;max-width:68ch}
.story h2{font-size:32px;font-family:var(--display);font-weight:400;margin-bottom:8px}
.story p{color:var(--muted)}
.story .viz{aspect-ratio:16/9;max-width:100%;border-radius:14px;overflow:hidden;background:var(--surface)}
.story canvas{width:100%;height:100%;display:block}
.quote{font:400 clamp(28px,3.4vw,40px)/1.2 var(--display);max-width:26ch}

.filters{display:flex;gap:8px;flex-wrap:wrap}
.chip{min-height:44px;padding:0 18px;border-radius:999px;border:1px solid var(--line);background:transparent;color:var(--ink);font:600 14px var(--sans);cursor:pointer;transition:background .2s,color .2s,border-color .2s}
.chip[aria-pressed="true"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.pubs{margin-top:28px}
.pub{display:grid;grid-template-columns:130px minmax(0,1fr) 32px;gap:20px;align-items:center;padding-block:22px;border-top:1px solid var(--line);color:var(--ink);text-decoration:none;transition:padding .3s}
.pub:hover{padding-left:10px}
.pub h3{font-size:20px;font-weight:600;line-height:1.3}
@media (max-width:640px){.pub{grid-template-columns:minmax(0,1fr) 24px}.pub .eyebrow{grid-column:1/-1}}

.founder{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(32px,6vw,88px);align-items:center}
.portrait{aspect-ratio:4/5;max-width:100%;border-radius:18px;background:var(--surface);display:grid;place-items:center;overflow:hidden;position:relative}
.portrait canvas{position:absolute;inset:0;width:100%;height:100%}
.portrait span{position:relative;font:500 12px var(--mono);color:var(--muted);background:var(--bg);padding:6px 10px;border-radius:6px}
@media (max-width:900px){.founder{grid-template-columns:minmax(0,1fr)}.portrait{max-width:420px}}
.facts4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
@media (max-width:900px){.facts4{grid-template-columns:repeat(2,minmax(0,1fr))}}
.principle{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:24px;padding-block:26px;border-top:1px solid var(--line)}
.principle h3{font:400 28px/1.15 var(--display)}
.principle p{color:var(--muted)}
@media (max-width:760px){.principle{grid-template-columns:minmax(0,1fr)}}

.contact{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(32px,6vw,96px);padding-block:clamp(56px,8vw,104px)}
@media (max-width:900px){.contact{grid-template-columns:minmax(0,1fr)}}
form{display:grid;gap:18px}
.row2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
@media (max-width:560px){.row2{grid-template-columns:minmax(0,1fr)}}
.field{display:grid;gap:6px}
.field label{font-weight:600;font-size:14px}
.field input,.field select,.field textarea{font:inherit;min-height:50px;padding:12px 14px;border-radius:10px;border:1px solid var(--muted);background:var(--bg);color:var(--ink);width:100%}
.check{display:flex;gap:12px;align-items:center;font-size:14px}
.check input{width:22px;height:22px;accent-color:var(--accent)}
.status{padding:16px 18px;border-radius:12px;background:var(--surface);border:1px solid var(--accent)}

/* reveal: only elements below the first screen are pre-hidden, by script */
.rv{transition:opacity .8s cubic-bezier(.2,.8,.2,1),transform .8s cubic-bezier(.2,.8,.2,1)}
.rv.pre{opacity:0;transform:translateY(22px)}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .rv.pre{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* production additions */
.skip{position:absolute;left:12px;top:-60px;z-index:50;background:var(--ink);color:var(--bg);padding:12px 18px;border-radius:999px;text-decoration:none;font-weight:600}
.skip:focus{top:12px}
.brand .word{display:block;height:14px;width:auto}
.f-brand img{display:block;height:44px;width:auto}
.prose{max-width:68ch;display:grid;gap:18px;padding-block:clamp(40px,6vw,72px)}
.prose h2{font:400 32px/1.1 var(--display);margin-top:18px}
.prose p,.prose li{color:var(--muted)}
.prose ul{margin:0;padding-left:20px}