/* GIA test-section world (divergence n° 2, 07/10/2026): one instrumented wind-tunnel run.
   Loaded after gia.css on every page: retunes the tokens, the header and the buttons, then styles the home acts. */
:root{
  --sheet:#E9ECEC;--paper:#F6F7F7;--ink:#0E0F10;--mute:#50575C;--line:#C3C9CC;--faint:#D9DEDF;
  --yellow:#FFD400;--steel:#1B1F22;--steel2:#272C30;--red:#E5484D;
  --coral:var(--yellow);--cobalt:var(--steel);
  --r:2px;
}
body{background:var(--sheet)}
::selection{background:var(--yellow);color:var(--ink)}

/* header: a quiet light bar that floats over the tunnel and settles once you scroll */
.site-header{background:rgba(246,247,247,.9);color:var(--ink);-webkit-backdrop-filter:saturate(1.2) blur(12px);backdrop-filter:saturate(1.2) blur(12px);border-bottom:1px solid var(--line);transition:background .3s,border-color .3s}
.brand{color:var(--ink)}
.brand b{border-radius:2px}
.brand span{font-weight:600}
.nav-links a{color:var(--ink);font-weight:600}
.nav-links a:hover{background:rgba(14,15,16,.06)}
.nav-links a[aria-current=page]{box-shadow:inset 0 -3px 0 var(--yellow)}
.nav-links a i.sq{display:none}
.nav-links .loc{border:1.5px solid var(--line)}
.nav-cta{background:var(--yellow);color:var(--ink)!important}
.nav-cta:hover{background:#ffe04d!important}
.nav-toggle{color:var(--ink);border:1.5px solid var(--ink)}
.home .site-header{position:fixed;left:0;right:0;background:transparent;border-color:transparent;-webkit-backdrop-filter:none;backdrop-filter:none}
.home .site-header.is-scrolled{background:rgba(246,247,247,.92);border-color:var(--line);-webkit-backdrop-filter:saturate(1.2) blur(12px);backdrop-filter:saturate(1.2) blur(12px)}

/* one signal-yellow action, no offset shadows */
.button,.btn{background:var(--yellow);border:0;border-radius:2px;font-weight:800;font-stretch:84%;letter-spacing:.005em;box-shadow:none}
.button:hover,.btn:hover{transform:none;box-shadow:inset 0 -4px 0 rgba(14,15,16,.85)}
.button.dark{background:var(--ink);color:#fff}
.button.dark:hover{box-shadow:inset 0 -4px 0 var(--yellow)}
.tlink{text-decoration-thickness:2px;text-decoration-color:var(--ink)}
.tlink:hover{text-decoration-color:var(--yellow)}
:focus-visible{outline:3px solid var(--ink);outline-offset:3px;box-shadow:0 0 0 6px var(--yellow)}

/* ---------- home ---------- */
.lab main{overflow-x:clip}
.lab h1,.lab h2,.lab h3{font-weight:800}

/* act 1: the test section */
.tunnel{position:relative;height:max(680px,min(100svh,1020px));overflow:hidden;background:#D8DCDC;isolation:isolate}
.tunnel .plate{position:absolute;inset:0;z-index:-1;will-change:transform}
.tunnel .plate img{transform:translateY(var(--py,0px)) scale(1.06)}
.tunnel .l1{transform:translateY(var(--hy,0px))}
.tunnel .plate img{width:100%;height:100%;object-fit:cover;object-position:50% 46%}
.tunnel h1{position:absolute;inset:0;margin:0;pointer-events:none;font-size:min(9.25vw,15vh,140px);font-stretch:64%;line-height:.84;letter-spacing:-.004em;word-spacing:.02em;color:var(--ink)}
.tunnel{--edge:max(var(--gut),calc((100vw - var(--max)) / 2 + var(--gut)))}
.tunnel h1 span{position:absolute;left:var(--edge);right:var(--edge);white-space:nowrap}
.tunnel .l1{top:calc(64px + clamp(18px,3.4vh,40px))}
.tunnel .l2{top:70.5%}
.hero-foot{position:absolute;left:var(--edge);right:var(--edge);bottom:clamp(18px,3.4vh,36px);display:flex;align-items:flex-end;gap:clamp(18px,2.4vw,36px)}
.hero-foot .lede{margin:0;font-size:clamp(16px,1.25vw,19px);line-height:1.4;font-weight:500;max-width:38ch;color:var(--ink)}
.hero-foot .button{flex:none;min-height:64px;padding:0 28px;font-size:clamp(18px,1.5vw,22px)}
.readout{margin-left:auto;flex:none;width:clamp(240px,20vw,300px);background:var(--steel);color:#fff;padding:12px 18px 12px;border-radius:3px;box-shadow:0 18px 40px -18px rgba(0,0,0,.55),inset 0 }
.readout .rl,.screen .rl{display:block;white-space:nowrap;font:500 clamp(9.5px,.78vw,12px)/1.2 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:#AEB6BA}
.readout .rw{display:block;font:700 clamp(34px,3vw,44px)/1 var(--mono);color:var(--yellow);letter-spacing:.02em;margin:6px 0 10px;text-shadow:none}
.lamps{display:flex;justify-content:space-between;gap:10px}
.lamps span{display:flex;align-items:center;gap:7px;font:600 12px/1 var(--mono);letter-spacing:.06em;color:#8E979C}
.lamps i{width:12px;height:12px;border-radius:50%;background:#3A4146;box-shadow:inset 0 1px 1px rgba(0,0,0,.6)}
.lamps .on{color:#fff}
.lamps .on i{background:var(--yellow);}
.lamps .on[data-k=no] i{background:var(--red);}
.lamps .on[data-k=go] i{background:#fff;}
.istrip{background:var(--steel);color:#C9D0D3}
.istrip ul{display:flex;justify-content:space-between;gap:20px;margin:0 auto;padding-block:14px;list-style:none;font:500 12px/1.2 var(--mono);letter-spacing:.1em;text-transform:uppercase}
.istrip li{display:flex;align-items:center;gap:10px}
.istrip li::before{content:"";width:6px;height:6px;background:var(--yellow);border-radius:50%}

/* act 2: the enemy */
.lab .stmt{padding-block:clamp(90px,12vw,190px)}
.lab .stmt h2{font-size:clamp(56px,10.6vw,176px);font-stretch:62%;line-height:.88;letter-spacing:-.018em}
.lab .stmt .struck::after{background:var(--yellow);height:.14em;top:50%;z-index:1}
.lab .stmt .struck{z-index:0}
.lab .stmt .sbody{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,5vw,90px);margin-top:clamp(36px,5vw,64px);border-top:1px solid var(--ink);padding-top:24px}
.lab .stmt p{margin:0;max-width:44ch}
.vs{margin:0;display:grid;gap:0}
.vs div{display:grid;grid-template-columns:9em 1fr;gap:16px;padding:14px 0;border-bottom:1px solid var(--line);align-items:baseline}
.vs div:first-child{padding-top:0}
.vs dt{font:500 12px/1.3 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--mute)}
.vs dd{margin:0;font:700 clamp(19px,1.6vw,23px)/1.25 var(--sans);font-stretch:86%}
.vs .x dd{color:var(--mute);text-decoration:line-through;text-decoration-color:var(--yellow);text-decoration-thickness:3px}

/* act 3: the protocol sheet, a full-width steel console */
.protocol{background:var(--steel);color:#fff;padding:clamp(70px,8vw,120px) 0}
.protocol .ph{display:grid;grid-template-columns:1fr;gap:18px}
.protocol .ph .case{margin:0}
.protocol .ph .tag{grid-column:1/-1;justify-self:start}
.protocol h2{font:600 13px/1.3 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--yellow);max-width:none;grid-column:1/-1}
.protocol .tag{font:500 12px/1.3 var(--mono);letter-spacing:.08em;color:#C2C9CC;border:1px solid #4A5257;padding:6px 10px;background:none}
.lot{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin:clamp(34px,4vw,56px) 0 0;border-top:1px solid #4A5257;border-bottom:1px solid #4A5257}
.lot div{padding:16px 18px 18px 0}
.lot div+div{padding-left:18px;border-left:1px solid #4A5257}
.lot dt{font:500 12px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:#A9B1B5;margin-bottom:10px}
.lot dd{margin:0;font:700 clamp(18px,1.6vw,24px)/1.15 var(--sans);font-stretch:84%}
.protocol .lot{margin-bottom:clamp(28px,3vw,44px)}
.protocol .case q{display:block;font:800 clamp(40px,5.4vw,88px)/.96 var(--sans);font-stretch:64%;quotes:"\201C" "\201D";max-width:22ch;color:#fff;letter-spacing:-.005em}
.protocol .case q::before{color:var(--yellow)}
.protocol .stops{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:0;padding:0;border:1px solid #4A5257;border-radius:3px;overflow:hidden}
.protocol .stops::before{display:none}
.protocol .stops button{all:unset;box-sizing:border-box;cursor:pointer;display:flex;flex-direction:column;align-items:flex-start;gap:8px;padding:16px 18px;text-align:left;border-left:1px solid #4A5257;transition:background .2s}
.protocol .stops button:first-child{border-left:0}
.protocol .stops button:hover{background:var(--steel2)}
.protocol .stops button[aria-selected=true]{background:var(--yellow);color:var(--ink)}
.protocol .stops button .k,.protocol .stops button[aria-selected=true] .k{all:unset;font:500 12px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;opacity:.75}
.protocol .stops .v{font:800 clamp(20px,2vw,30px)/1 var(--sans);font-stretch:72%;margin:0}
.protocol .stops button:focus-visible{outline:3px solid #fff;outline-offset:-5px;box-shadow:none}
.protocol .panel{padding-top:clamp(28px,3vw,44px);grid-template-columns:1.05fr 1fr;align-items:start}
.protocol .panel .big{font-size:clamp(26px,2.6vw,40px);font-stretch:72%;line-height:1.05;max-width:18ch}
.protocol .panel li{background:transparent;border:0;border-top:1px solid #4A5257;border-radius:0;padding:14px 0;grid-template-columns:96px 1fr}
.protocol .panel li:last-child{border-bottom:1px solid #4A5257}
.protocol .panel li b{color:var(--yellow);font-weight:600}
.protocol .panel .conf{background:#fff;color:var(--ink);justify-self:start}
.protocol .panel .conf.med{background:var(--yellow)}
.protocol .tlink{color:#fff;text-decoration-color:var(--yellow)}

/* act 4: four scales of test, the same model growing with the stakes */
.scales{padding:clamp(90px,10vw,160px) 0 clamp(70px,8vw,120px)}
.scales h2{font-size:clamp(42px,5.4vw,88px);font-stretch:64%;max-width:24ch}
.scales .floor{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;margin-top:clamp(40px,5vw,72px);align-items:start}
.sc{padding:0 clamp(14px,1.6vw,26px) 0;border-left:1px solid var(--line);display:flex;flex-direction:column}
.sc:first-child{border-left:0;padding-left:0}
.sc .stage{position:relative;height:clamp(150px,17vw,250px);display:flex;align-items:flex-end;justify-content:center;border-bottom:1px solid var(--ink);margin-bottom:18px}
.sc .stage img{position:relative;z-index:1;width:var(--mw);height:auto;mix-blend-mode:multiply;margin-bottom:-4px;transform-origin:50% 100%}
.sc1 .stage img{--mw:30%}.sc2 .stage img{--mw:55%}.sc3 .stage img{--mw:100%}
.sc .ring{position:absolute;left:50%;bottom:-7px;translate:-50% 0;width:calc(var(--mw,60%) * 1.04);height:14px;border:3px solid var(--yellow);border-radius:50%;z-index:0}
.sc1 .ring{--mw:30%}.sc2 .ring{--mw:55%}.sc3 .ring{--mw:100%}
.sc4 .stage img{--mw:100%}
.sc4 .ring{--mw:100%}
.sc4 .stage img{--mw:100%}
.sc4 .lamp{position:absolute;right:8%;top:14%;z-index:2;display:flex;align-items:center;gap:8px;font:600 12px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;background:var(--steel);color:#fff;padding:7px 10px;border-radius:2px}
.sc4 .lamp i{width:9px;height:9px;border-radius:50%;background:var(--yellow);}
.sc .sl{display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin-bottom:12px}
.sc .ratio{font:700 clamp(30px,3vw,46px)/1 var(--mono);letter-spacing:-.02em}
.sc .where{white-space:nowrap;font:500 12px/1.2 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--mute);text-align:right}
.sc h3{font-size:clamp(22px,1.9vw,30px);font-stretch:68%;margin-bottom:10px;min-height:2.04em}
.sc .fee{font:800 clamp(26px,2.5vw,38px)/1 var(--sans);font-stretch:70%;margin:0 0 12px;display:inline-block;align-self:flex-start;padding:4px 0 3px;border-bottom:3px solid var(--ink)}
.sc1 .fee{background:var(--yellow);padding:4px 8px 3px;border:0}
.sc p{font-size:16px;line-height:1.5;color:#2B3033}
.sc .facts{margin:2px 0 16px;border-top:1px solid var(--line)}
.sc .facts div{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid var(--line);font:500 13px/1.25 var(--mono)}
.sc .facts dt{color:var(--mute)}
.sc .facts dd{margin:0;font-weight:700;text-align:right}
.sc .tlink{margin-top:auto;align-self:flex-start}

/* act 5: the verdict panel (peak) */
.lab .reel{background:var(--steel);border-top:0;padding:clamp(90px,10vw,150px) 0}
.lab .reel .rhead{display:grid;grid-template-columns:1fr 1fr;gap:clamp(24px,4vw,64px);align-items:end}
.lab .reel h2{font-size:clamp(44px,5.6vw,92px);font-stretch:64%;max-width:13ch}
.lab .reel .rule{margin:0;color:#C9D0D3;font-size:14.5px}
.console{display:grid;grid-template-columns:1.25fr 1fr;gap:clamp(24px,4vw,64px);margin-top:clamp(36px,4vw,60px);align-items:stretch}
.screen{background:#0B0D0E;border-radius:4px;padding:clamp(20px,2.4vw,34px);box-shadow:inset 0 0 0 1px rgba(255,255,255,.07);display:flex;flex-direction:column}
.lab .reel-win{--lh:clamp(104px,13.5vw,220px);margin:clamp(10px,1.6vw,22px) 0 clamp(16px,2vw,26px)}
.lab .reel-strip span{font-family:var(--mono);font-weight:700;font-stretch:100%;font-size:calc(var(--lh) * .82);letter-spacing:-.04em;color:#2C3236}
.lab .reel-strip span.on.go{color:#fff;text-shadow:none}
.lab .reel-strip span.on.gif{color:var(--yellow);text-shadow:none}
.lab .reel-strip span.on.no{color:var(--red);text-shadow:none}
.screen .lamps{margin-top:auto;justify-content:flex-start;gap:28px}
.screen .lamps span{font-size:13px}
.screen .lamps i{width:14px;height:14px}
.lab .dial{grid-template-columns:1fr;gap:26px;align-content:start}
.lab .dial label{color:#C9D0D3;font-weight:500}
.lab .dial .unit{color:#8E979C}
.lab .dial output{color:#fff;font-family:var(--mono);font-weight:700;font-stretch:100%}
.lab .dial input[type=range]::-webkit-slider-runnable-track{height:6px;background:linear-gradient(90deg,var(--red) 0 40%,var(--yellow) 40% 60%,#fff 60% 100%);border-radius:3px}
.lab .dial input[type=range]::-moz-range-track{height:6px;background:linear-gradient(90deg,var(--red) 0 40%,var(--yellow) 40% 60%,#fff 60% 100%);border-radius:3px}
.lab .dial input[type=range]::-webkit-slider-thumb{width:30px;height:30px;margin-top:-12px;background:var(--yellow);border:3px solid var(--steel);box-shadow:0 0 0 2px var(--yellow)}
.lab .dial input[type=range]::-moz-range-thumb{width:24px;height:24px;background:var(--yellow);border:3px solid var(--steel);box-shadow:0 0 0 2px var(--yellow)}
.lab .dial .scale{position:relative;display:block;height:14px;color:#8E979C}
.lab .dial .scale span{position:absolute;translate:-50% 0}
.lab .dial .scale span:first-child{left:0;translate:0 0}
.lab .dial .scale span:last-child{right:0;translate:0 0}
.lab .dial .why{border:0;border-top:1px solid #4A5257;border-radius:0;padding:22px 0 0;min-height:170px}
.lab .dial .why b{font-size:clamp(24px,2.4vw,34px)}
.lab .dial .why p{color:#C9D0D3}
.lab .reel .note{color:#A9B1B5}

/* act 6: for whom, two test sections */
.lab .notfor h2{font-size:clamp(40px,5vw,80px);font-stretch:64%;max-width:16ch;margin-bottom:.6em}
.lab .notfor .cols{grid-template-columns:1fr 1fr .8fr;border:0;border-top:1px solid var(--ink)}
.lab .notfor .col{padding:clamp(22px,2.6vw,36px) clamp(18px,2.4vw,34px) 0 0}
.lab .notfor .col+.col{border-left:1px solid var(--line);background:none;padding-left:clamp(18px,2.4vw,34px)}
.lab .notfor h3{font-size:clamp(22px,2vw,30px);font-stretch:72%}
.lab .notfor li{padding-left:30px;font-size:17px}
.lab .notfor li::before{width:14px;height:14px;top:.38em;border:1.5px solid var(--ink);border-radius:50%;background:none!important}
.lab .notfor li::after{content:"";position:absolute;left:3px;top:calc(.38em + 6px);width:8px;height:2px;background:var(--ink)}
.lab .notfor .yes li::before{background:var(--yellow)!important;border-color:var(--ink)}
.lab .notfor .yes li::after{display:none}
.lab .notfor .cap p{font-size:16px;color:var(--mute)}
.bays{display:flex;gap:12px;margin-bottom:20px}
.bays i{width:72px;height:22px;border:3px solid var(--yellow);border-radius:50%}

/* act 7: faq, hairlines */
.lab.home .faq{padding-bottom:clamp(56px,6vw,90px)}
.lab .faq h2{font-size:clamp(40px,5vw,80px);font-stretch:64%;max-width:18ch;margin-bottom:.6em}
.lab .faq details{border-top:1px solid var(--ink)}
.lab .faq details:last-child{border-bottom:1px solid var(--ink)}
.lab .faq summary{font-stretch:72%}
.lab .faq summary::after{border:1.5px solid var(--ink);background:none;width:36px;height:36px;font-size:20px}
.lab .faq details[open] summary::after{background:var(--yellow);color:var(--ink)}

/* act 8: back to the tunnel, the door */
.lab .final{position:relative;background:#D8DCDC;color:var(--ink);border-top:0;padding:clamp(80px,9vw,150px) 0;overflow:hidden;isolation:isolate}
.lab .final .fplate{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:50% 62%;z-index:-2}
.lab .final::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(233,236,236,.96) 0 38%,rgba(233,236,236,0) 62%)}
.lab .final h2{font-size:clamp(44px,5.6vw,96px);font-stretch:62%;max-width:12ch}
.lab .final p{color:#2B3033;max-width:40ch}
.lab .final .button{margin-top:30px;min-height:68px;padding:0 32px;font-size:clamp(19px,1.7vw,24px)}

/* nestor stays (never hidden), in the ink of the page, label only on hover or focus */
.nestor-medallion{width:40px;height:40px;border:0;border-radius:3px;box-shadow:0 6px 16px -8px rgba(0,0,0,.5);background-color:var(--yellow)}
.nestor-guide::before{background:var(--paper);color:var(--ink);border:1px solid var(--line);font-weight:500;letter-spacing:.06em;opacity:0;translate:6px 0;transition:opacity .2s,translate .2s;pointer-events:none}
.nestor-guide:hover::before,.nestor-guide:focus-within::before{opacity:1;translate:0 0}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .scales .floor{grid-template-columns:1fr 1fr;row-gap:56px}
  .sc:nth-child(3){border-left:0;padding-left:0}
  .console{grid-template-columns:1fr}
  .lab .reel .rhead{grid-template-columns:1fr}
}
@media (max-width:1080px){
  .readout{display:none}
  .protocol .ph{grid-template-columns:1fr}
  .hero-foot{max-width:none;right:var(--gut)}
  .lab .notfor .cols{grid-template-columns:1fr 1fr}
  .lab .notfor .cap{grid-column:1/-1;border-left:0!important;padding-left:0!important;border-top:1px solid var(--line);margin-top:28px}
  .protocol .stops{grid-template-columns:repeat(5,minmax(130px,1fr));overflow-x:auto}
  .lot{grid-template-columns:1fr 1fr}
  .lot div:nth-child(3){padding-left:0;border-left:0}
  .lot div:nth-child(n+3){border-top:1px solid #4A5257}
}
@media (max-width:860px){
  .main-nav{margin-left:0}
  .nav-links{background:var(--paper);border-top:1px solid var(--line)}
  .home .site-header{background:rgba(246,247,247,.92);border-color:var(--line)}
}
@media (max-width:720px){
  .lab .stmt .sbody{grid-template-columns:1fr}
  .vs div{grid-template-columns:1fr;gap:6px}
  .tunnel{height:auto;display:flex;flex-direction:column;padding:calc(64px + 22px) 0 0;background:var(--sheet)}
  .tunnel h1{position:static;display:contents;font-size:clamp(40px,11.4vw,64px)}
  .tunnel .l2{white-space:nowrap!important}
  .tunnel h1 span{position:static;display:block;white-space:normal;padding:0 var(--gut)}
  .tunnel .l1{order:1}
  .tunnel .plate{position:relative;order:2;inset:auto;z-index:0;margin:14px 0 6px;aspect-ratio:780/533}
  .tunnel .l2{order:3}
  .hero-foot{position:static;order:4;flex-direction:column;align-items:flex-start;gap:18px;padding:18px var(--gut) 34px}
  .hero-foot .button{width:100%;justify-content:space-between}
  .istrip ul{flex-wrap:wrap;gap:8px 18px;font-size:12px}
  .scales .floor{grid-template-columns:1fr}
  .sc{border-left:0;padding:0}
  .sc4 .stage{height:120px}
  .lab .notfor .cols{grid-template-columns:1fr}
  .lab .notfor .col+.col{border-left:0;padding-left:0;border-top:1px solid var(--line);margin-top:24px}
  .protocol .panel{grid-template-columns:1fr}
  .lot{grid-template-columns:1fr}
  .lot div,.lot div+div{padding-left:0;border-left:0;border-top:1px solid #4A5257}
  .lot div:first-child{border-top:0}
  .lab .final::before{background:rgba(233,236,236,.88)}
}
@media (prefers-reduced-motion:reduce){
  .lab .reel-strip{transition:none}
}

/* ---------- inner pages: the same test section, quieter ---------- */
.lab .pagehead,.lab .pagehead.c-cobalt,.lab .pagehead.c-coral,.lab .pagehead.c-yellow,.lab .pagehead.c-sheet{background:var(--sheet);color:var(--ink);border-bottom:1px solid var(--ink);padding-top:clamp(40px,5vw,80px)}
.lab .pagehead .chip{border:1px solid var(--ink);background:transparent;border-radius:2px;font-weight:500;letter-spacing:.08em;text-transform:uppercase;font-size:12px;color:var(--ink)!important}
.lab .pagehead .chip i{background:var(--yellow);color:var(--ink);border-radius:2px}
.lab .pagehead h1{font-stretch:64%;font-size:clamp(44px,5.8vw,96px);line-height:.92;max-width:15ch}
.lab .pagehead .lede{color:#2B3033}
.lab .pagehead .button,.lab .pagehead.c-cobalt .button{background:var(--yellow);color:var(--ink)}
.lab .pagehead .strip,.lab .pagehead.c-cobalt .strip{border-top:1px solid var(--ink)}
.lab .pagehead .strip div,.lab .pagehead.c-cobalt .strip div{border-right:1px solid var(--line);border-color:var(--line)}
.lab .pagehead .strip span,.lab .pagehead.c-cobalt .strip span,.lab .pagehead.c-coral .strip span,.lab .pagehead.c-yellow .strip span{color:var(--mute);font-weight:500;letter-spacing:.08em}
.pagehead.has-fig .wrap{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.85fr);column-gap:clamp(30px,5vw,90px)}
.pagehead.has-fig .wrap>*{grid-column:1}
.pagehead.has-fig .strip{grid-column:1/-1}
.pagehead.has-fig{padding-top:0;--edge:max(var(--gut),calc((100vw - var(--max)) / 2 + var(--gut)))}
.pagehead.has-fig .tagrow{margin-top:clamp(40px,5vw,80px)}
.pagehead.has-fig .cta-row{margin-bottom:clamp(40px,4.4vw,64px)}
.pagehead.has-fig .strip{margin-top:0}
.phfig{grid-column:2!important;grid-row:1/span 4;align-self:stretch;position:relative;overflow:hidden;margin:0 calc(-1 * var(--edge)) 0 0;min-height:clamp(440px,42vw,620px);background:#C9CFCF}
.phfig img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:50% 52%;transform-origin:47% 58%;transform:scale(var(--z,1))}
.phfig.s1{--z:1.05}.phfig.s2{--z:1.7}.phfig.s3{--z:2.55}
.phfig .ratio{position:absolute;z-index:2;left:20px;top:20px;font:700 clamp(36px,3.6vw,56px)/1 var(--mono);letter-spacing:-.03em;background:var(--steel);color:var(--yellow);padding:10px 14px 9px;border-radius:2px}
.phfig .where{position:absolute;z-index:2;left:20px;top:calc(20px + clamp(36px,3.6vw,56px) + 30px);font:500 12px/1.2 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--ink);background:rgba(246,247,247,.88);padding:6px 8px;border-radius:2px}
.scalebar{position:absolute;z-index:2;left:20px;bottom:20px;display:flex;background:var(--steel);border-radius:3px;padding:4px;box-shadow:0 16px 34px -18px rgba(0,0,0,.6)}
.scalebar a{display:flex;align-items:center;gap:9px;padding:10px 14px;color:#C9D0D3;text-decoration:none;border-radius:2px;font:500 12px/1 var(--mono);letter-spacing:.06em}
.scalebar a+a{border-left:1px solid #3A4146}
.scalebar a:hover{background:var(--steel2);color:#fff}
.scalebar b{font:700 17px/1 var(--mono);color:#fff}
.scalebar i{width:9px;height:9px;border-radius:50%;background:#3A4146}
.scalebar a[aria-current]{color:#fff}
.scalebar a[aria-current] b{color:var(--yellow)}
.scalebar a[aria-current] i{background:var(--yellow);}
.scalebar a:focus-visible{outline:2px solid var(--yellow);outline-offset:-2px;box-shadow:none}
/* claim register as a test sheet */
.exhibit .bar{align-items:center}
.exhibit .stamp{margin-left:auto;margin-right:14px;font:700 14px/1 var(--mono);color:var(--steel);background:var(--yellow);padding:4px 8px;border-radius:2px}
.exhibit .stamp:empty{display:none}
.gauge3{display:inline-flex;gap:3px;margin-right:10px;vertical-align:-1px}
.gauge3 i{width:7px;height:15px;border:1.5px solid var(--ink);border-radius:1px}
.gauge3.g3 i,.gauge3.g2 i:nth-child(-n+2),.gauge3.g1 i:first-child{background:var(--ink)}
.exhibit tr.rv{opacity:0;transform:translateX(-10px);transition:opacity .5s,transform .5s cubic-bezier(.16,1,.3,1)}
.exhibit tr.rv.in{opacity:1;transform:none}
.no-js .exhibit tr.rv{opacity:1;transform:none}
/* what is in it: the file's sheets mounted in the test section */
.deliv-x{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(30px,5vw,90px);align-items:start}
.sheets{position:sticky;top:110px;height:clamp(400px,34vw,500px);background:var(--steel);border-radius:3px;overflow:hidden;isolation:isolate}
.sheets .sbg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:50% 40%;opacity:.38;z-index:-1}
.sheets .sring{position:absolute;left:50%;bottom:9%;translate:-50% 0;width:70%;height:34px;border:4px solid var(--yellow);border-radius:50%;}
.sh{position:absolute;left:50%;bottom:calc(9% + 17px);width:62%;aspect-ratio:1/1.08;translate:-50% 0;background:#fff;border-radius:2px;padding:20px 20px 0;box-shadow:0 24px 40px -22px rgba(0,0,0,.7);opacity:0;transform:translateY(24px) rotate(-1.5deg);transition:opacity .45s,transform .55s cubic-bezier(.16,1,.3,1)}
.sh b{display:inline-block;font:700 13px/1 var(--mono);padding:6px 8px;background:var(--yellow);border-radius:2px}
.sh span{display:block;margin:14px 0 10px;font:800 clamp(20px,1.8vw,28px)/1.02 var(--sans);font-stretch:70%}
.sh em{display:block;font:400 13px/1.5 var(--mono);color:var(--mute);font-style:normal}
.sh.on{opacity:1;transform:none;z-index:2}
.deliv-x .row{transition:opacity .3s}
.lab .lead-form .check span{text-transform:none;font:500 15px/1.4 var(--sans);letter-spacing:0}
.lab .price{align-self:start}
.lab .sec h2{font-stretch:64%}
.lab .deliv{border-top:1px solid var(--ink)}
.lab .deliv .row{border-bottom:1px solid var(--line)}
.lab .deliv .row b{color:var(--ink);font-family:var(--mono);font-weight:700;font-stretch:100%;font-size:clamp(22px,2.2vw,32px)}
.lab .phases{border:1px solid var(--ink)}
.lab .phases>div{border-right:1px solid var(--ink)}
.lab .phases>div:nth-child(1),.lab .phases>div:nth-child(2){background:var(--paper)}
.lab .phases>div:nth-child(4){background:var(--steel)}
.lab .price,.lab .price.p-cobalt,.lab .price.p-coral,.lab .price.p-sheet{border:0;background:var(--steel);color:#fff;border-radius:3px}
.lab .price .amt{color:var(--yellow);font-stretch:62%}
.lab .price .button,.lab .price.p-cobalt .button{background:var(--yellow);color:var(--ink)}
.lab .lim li::before{border:1.5px solid var(--ink);width:16px;height:16px;top:.34em}
.lab .exhibit{border:1px solid var(--ink);border-radius:3px;overflow:hidden}
.lab .exhibit .bar{background:var(--steel)}
.lab .exhibit th{background:var(--paper);border-bottom:1px solid var(--ink)}
.lab .exhibit td{border-bottom:1px solid var(--line)}
.lab .exhibit .foot{border-top:1px solid var(--ink)}
.lab .lead{border-top:1px solid var(--ink);background:var(--paper)}
.lab .lead-form input[type=text],.lab .lead-form input:not([type]),.lab .lead-form input[type=email],.lab .lead-form textarea{border:1.5px solid var(--ink);border-radius:2px;background:#fff}
.lab .faq summary::after{border:1.5px solid var(--ink);background:none;width:36px;height:36px;font-size:20px}
.lab .final:not(:has(.fplate)){background:var(--steel);color:#fff}
.lab .final:not(:has(.fplate))::before{display:none}
.lab .final:not(:has(.fplate)) h2{color:#fff}
.lab .final:not(:has(.fplate)) p{color:#C9D0D3}
.lab .doorway .button{border:0;box-shadow:none}
@media (max-width:1080px){.pagehead.has-fig .wrap{grid-template-columns:1fr}.phfig{grid-column:1!important;grid-row:auto;order:-1;min-height:0;aspect-ratio:16/10;margin:0 calc(-1 * var(--gut))}.deliv-x{grid-template-columns:1fr}.sheets{display:none}}
@media (max-width:720px){.lab .pagehead h1{max-width:none;font-size:clamp(40px,11vw,60px)}.scalebar{left:10px;right:10px;bottom:10px}.scalebar a{flex:1;padding:9px 8px;gap:6px}.scalebar span{display:none}.phfig .ratio{left:12px;top:12px}.phfig .where{display:none}}

/* reality check: eight lamps and a test log that fills as you answer */
.lab .check-shell h1{font-stretch:64%}
.lab .corridor{height:46px}
.lab .corridor .track{top:22px;height:2px;background:var(--line)}
.lab .corridor .fill{top:21px;height:4px;background:var(--ink)}
.lab .corridor li span{top:23px;width:30px;height:30px;border-radius:3px;border:1.5px solid var(--ink);background:var(--paper);font-weight:600;font-size:12.5px}
.lab .corridor li.done span{background:var(--yellow);color:var(--ink);border-color:var(--ink)}
.lab .corridor li.now span{background:var(--steel);color:var(--yellow);border-color:var(--steel);box-shadow:0 }
.lab .badge .lanyard{display:none}
.lab .badge .bcard,.lab .bcard{background:var(--steel);color:#fff;border:0;border-radius:3px;box-shadow:0 22px 40px -24px rgba(0,0,0,.6);rotate:0deg;transform:none}
.lab .bcard .bhead .label{color:var(--yellow);letter-spacing:.12em}
.lab .bcard .slot{width:10px;height:10px;border-radius:50%;background:var(--yellow);border:0}
.lab .bcard .fields li{border-color:#3A4146}
.lab .bcard .fl{color:#A9B1B5}
.lab .bcard .fv{color:var(--yellow);font-weight:700}
.lab .route-stamp{background:var(--yellow);color:var(--ink);border:0;rotate:0deg;font-family:var(--mono)}
.lab .quiz-panel{border:1px solid var(--ink);border-radius:3px;box-shadow:none;background:var(--paper)}
.lab .quiz-tag{font-weight:500;letter-spacing:.1em;color:var(--mute)}
.lab .quiz-question{font-stretch:66%}
.lab .quiz-option{border:1.5px solid var(--ink);border-radius:2px;background:#fff}
.lab .quiz-option:hover{background:var(--yellow);transform:none}
.lab .quiz-input{border:1.5px solid var(--ink);border-radius:2px;background:#fff}
.lab .gauge{border:1px solid var(--ink);height:12px}
.lab .gauge i{background:var(--ink)}
.lab .verdict .lead-form{border-top:1px solid var(--ink)}
.lab .pagehead.has-fig{padding-top:0}
.exhibit td.res{white-space:nowrap}
.lab .bcard{padding-top:0;overflow:hidden}
.bwin{margin:0 -18px 14px;height:118px;overflow:hidden;position:relative}
.bwin img{width:100%;height:100%;object-fit:cover;object-position:50% 58%;filter:saturate(.9)}
.bwin::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,var(--steel))}
.site-footer{background:var(--steel);border-top:0}
@media (max-width:720px){.check-grid{display:flex;flex-direction:column}.check-grid .badge{position:static}}
.site-footer .brand{color:#fff}

/* where this scale stops */
.sstrip{padding:clamp(30px,4vw,60px) 0 clamp(50px,6vw,90px)}
.sstrip h2{font-size:clamp(34px,4vw,60px);font-stretch:64%;margin-bottom:.6em}
.srow{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--ink)}
.srow li+li{border-left:1px solid var(--line)}
.srow a{display:grid;gap:8px;padding:22px 22px 24px 0;text-decoration:none;color:var(--ink);height:100%}
.srow li+li a{padding-left:22px}
.srow b{font:700 clamp(30px,3vw,46px)/1 var(--mono);letter-spacing:-.03em}
.srow .sl{font:800 22px/1 var(--sans);font-stretch:72%}
.srow .sd{color:var(--mute);font-size:15.5px;line-height:1.45}
.srow a:hover .sl{text-decoration:underline;text-decoration-color:var(--yellow);text-decoration-thickness:3px}
.srow li.on a{background:var(--steel);color:#fff;padding-left:22px}
.srow li.on b{color:var(--yellow)}
.srow li.on .sd{color:#C9D0D3}
/* faq as a test log */
.qlog summary{display:flex;gap:18px;align-items:baseline}
.qlog .qn{flex:none;font:600 13px/1 var(--mono);letter-spacing:.06em;color:var(--mute);min-width:3.4em}
/* the fee as a stamped test ticket */
.lab .price.ticket{position:relative;padding-left:clamp(34px,3.6vw,54px);background:var(--steel) radial-gradient(circle at 0 50%,var(--sheet) 0 7px,transparent 7.5px) 0 0/14px 22px repeat-y}
.tstamp{position:absolute;right:22px;top:22px;font:700 18px/1 var(--mono);color:var(--steel);background:var(--yellow);padding:8px 10px;border-radius:2px;rotate:4deg}
/* the request sheet */
.outcomes{margin-top:30px;border-top:1px solid var(--ink);padding-top:16px}
.outcomes ul{list-style:none;margin:12px 0 0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:10px}
.outcomes li{display:flex;align-items:center;gap:12px;padding:12px 14px;background:var(--sheet);border-radius:2px;font:700 16px/1 var(--sans);font-stretch:86%}
.outcomes li b{font:700 15px/1 var(--mono);background:var(--steel);color:var(--yellow);padding:6px 8px;border-radius:2px;min-width:3.4em;text-align:center}
.lead-form .first textarea{min-height:110px}
.lead-form .spec{grid-column:1/-1;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;padding-top:6px;border-top:1px dashed var(--line)}
.lead-form .spec label{font-size:12px;color:var(--mute)}
.lead-form .spec input{min-height:42px!important}
.lab .lead h2+.lede{margin-top:16px}
.lab .exhibit{max-width:none}
@media (max-width:1080px){.srow{grid-template-columns:1fr}.srow li+li{border-left:0;border-top:1px solid var(--line)}.srow li+li a{padding-left:0}.srow li.on a{padding-left:16px}.lead-form .spec{grid-template-columns:1fr 1fr}}
.lab .sec{padding:clamp(48px,6vw,96px) 0}.lab .sec.qlog{padding-bottom:clamp(40px,5vw,72px)}

/* ---------- guides: a test sheet with its own instruments ---------- */
.art .art-head{display:grid;grid-template-columns:minmax(0,1fr) 210px;gap:28px;align-items:end;border-bottom:1px solid var(--ink);padding-bottom:26px;margin-bottom:28px}
.art .art-head h1{font-stretch:64%;font-size:clamp(38px,4.8vw,70px);line-height:.94;margin:0}
.art .art-head .label{letter-spacing:.12em}
.art-meter{background:var(--steel);color:#fff;border-radius:3px;overflow:hidden;align-self:end}
.art-meter .mw{height:84px;overflow:hidden;position:relative}
.art-meter .mw img{width:100%;height:100%;object-fit:cover;object-position:50% 58%}
.art-meter .mw::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,var(--steel))}
.art-meter dl{margin:0;padding:6px 14px 12px}
.art-meter dl div{display:flex;justify-content:space-between;align-items:baseline;padding:7px 0;border-bottom:1px solid #3A4146}
.art-meter dl div:last-child{border-bottom:0}
.art-meter dt{font:500 12px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:#A9B1B5}
.art-meter dd{margin:0;font:700 17px/1 var(--mono);color:var(--yellow)}
.art .article .answer{background:var(--paper);border:0;border-left:6px solid var(--yellow);border-radius:0 3px 3px 0;padding:20px 22px;box-shadow:none}
.art .article .answer .label{color:var(--mute);letter-spacing:.12em}
.art .article a{text-decoration-color:var(--ink)}
.art .article a:hover{text-decoration-color:var(--yellow)}
.art .article h2{font-stretch:66%}
.art .article img{border:1px solid var(--line)}
.art .article blockquote{background:none;border:0;border-left:6px solid var(--yellow);padding:6px 0 6px 22px}
.art .article .tablewrap{border:1px solid var(--ink);border-radius:3px}
.art .article th{background:var(--paper);border-bottom:1px solid var(--ink)}
.art .article td{border-bottom:1px solid var(--line)}
.art .article .related-links a{border:1px solid var(--ink);border-radius:2px}
.art .article .cta-final,.art .article .callout{border:1px solid var(--ink);background:var(--paper);border-left:6px solid var(--yellow)}
.art .article pre{border:1px solid var(--ink)}
@media (min-width:1180px){
  .art .art-nav{border-left:1px solid var(--ink);padding-left:22px}
  .art .art-nav a i{border:1.5px solid var(--ink);border-radius:2px;background:var(--sheet);margin-left:-37px}
  .art .art-nav a.on i{background:var(--yellow)}
  .art .art-nav .exit{background:var(--yellow);border:0;border-radius:2px}
}
@media (max-width:720px){.art .art-head{grid-template-columns:1fr}.art-meter .mw{display:none}.art-meter dl{display:flex;gap:16px;flex-wrap:wrap}.art-meter dl div{border:0;gap:8px}}

/* F4: sheets are real pages of the file */
.sh{padding:18px 18px 14px;display:flex;flex-direction:column}
.sh span:not(.st){margin:12px 0 12px}
.sh small{margin-top:auto;font:500 12px/1 var(--mono);color:var(--mute);align-self:flex-end}
.sh .st{position:absolute;right:14px;top:16px;font:700 12px/1 var(--mono);background:var(--steel);color:var(--yellow);padding:5px 6px;border-radius:2px;margin:0}
.pg{flex:1;position:relative;min-height:0;margin-bottom:8px}
.pg-brief i{display:block;height:12px;width:88%;background:var(--ink);border-radius:1px;margin-bottom:14px}
.pg-brief u{display:flex;align-items:center;gap:8px;height:16px;margin:8px 0;text-decoration:none}
.pg-brief u::before{content:"";width:12px;height:12px;border:1.5px solid var(--ink);border-radius:1px;flex:none}
.pg-brief u::after{content:"";height:6px;flex:1;background:var(--faint)}
.pg-brief u:first-of-type::before{background:var(--yellow)}
.pg-map{border-left:1.5px solid var(--ink);border-bottom:1.5px solid var(--ink);background:linear-gradient(var(--faint),var(--faint)) 50% 0/1px 100% no-repeat,linear-gradient(var(--faint),var(--faint)) 0 50%/100% 1px no-repeat}
.pg-map i{position:absolute;width:12px;height:12px;border-radius:50%;background:var(--ink)}
.pg-map i:nth-child(1){left:18%;top:62%}.pg-map i:nth-child(2){left:36%;top:30%}.pg-map i:nth-child(3){left:66%;top:20%;background:var(--yellow);box-shadow:0 0 0 2px var(--ink)}.pg-map i:nth-child(4){left:74%;top:66%}.pg-map i:nth-child(5){left:50%;top:48%;width:8px;height:8px}
.pg-bars{display:flex;align-items:flex-end;gap:10%;border-bottom:1.5px solid var(--ink);padding:0 6%}
.pg-bars i{flex:1;background:var(--ink)}
.pg-bars i:nth-child(4){background:var(--yellow);box-shadow:inset 0 0 0 1.5px var(--ink)}
.pg-table{display:grid;grid-template-columns:1.6fr 1fr 1fr;grid-auto-rows:1fr;border:1px solid var(--ink)}
.pg-table i{border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:linear-gradient(var(--faint),var(--faint)) 8px 50%/60% 5px no-repeat}
.pg-table i.y{background:var(--yellow)}
.pg-time{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;align-content:start}
.pg-time b{font:700 18px/1 var(--mono);border-bottom:1.5px solid var(--ink);padding-bottom:6px}
.pg-time i{height:70px;background:repeating-linear-gradient(var(--faint) 0 5px,transparent 5px 13px)}
.pg-time i:first-of-type{background:repeating-linear-gradient(var(--ink) 0 5px,transparent 5px 13px)}
.pg-reg i{display:flex;align-items:center;gap:8px;height:20px;margin:6px 0;border-bottom:1px solid var(--line)}
.pg-reg i::before{content:"";flex:1;height:5px;background:var(--faint)}
.pg-reg i::after{content:"";width:26px;height:10px;background:linear-gradient(90deg,var(--ink) 0 7px,transparent 7px 9px,var(--ink) 9px 16px,transparent 16px 18px,var(--ink) 18px 25px)}
.pg-reg i:nth-child(2)::after{background:linear-gradient(90deg,var(--ink) 0 7px,transparent 7px 9px,var(--ink) 9px 16px,transparent 16px 18px,var(--line) 18px 25px)}
/* airflow dividers */
.flow{height:64px;margin:clamp(10px,2vw,30px) 0;opacity:.9}
.flow svg{width:100%;height:100%;display:block}
.flow path{fill:none;stroke:#AEB5B8;stroke-width:1.2;vector-effect:non-scaling-stroke;stroke-dasharray:6 10;animation:flowmove 6s linear infinite}
.flow path:nth-child(4),.flow path:nth-child(5){stroke:var(--ink);stroke-dasharray:none;animation:none}
@keyframes flowmove{to{stroke-dashoffset:-160}}
/* the scale strip shows the model at its three sizes */
.srow .mst{position:relative;display:flex;align-items:flex-end;justify-content:center;height:clamp(110px,10vw,150px);border-bottom:1px solid currentColor;margin-bottom:10px}
.srow .mst img{width:var(--mw);height:auto;margin-bottom:-3px;position:relative;z-index:1}
.srow .mst i{position:absolute;left:50%;bottom:-6px;translate:-50% 0;width:calc(var(--mw) * 1.04);height:12px;border:3px solid var(--yellow);border-radius:50%}
.srow li:nth-child(1){--mw:26%}.srow li:nth-child(2){--mw:50%}.srow li:nth-child(3){--mw:86%}
.srow li:not(.on) .mst img{opacity:.55;filter:grayscale(1)}
.srow li:not(.on) .mst i{border-color:var(--line)}
.srow li.on .mst{border-color:#4A5257}
/* possible answers read as the scale selector */
.outcomes ul{display:flex;gap:0;background:var(--steel);border-radius:3px;padding:4px}
.outcomes li{flex:1;background:none;color:#C9D0D3;flex-direction:column;align-items:flex-start;gap:8px;padding:12px 12px;font-size:14px}
.outcomes li+li{border-left:1px solid #3A4146;border-radius:0}
.outcomes li b{background:none;padding:0;min-width:0;text-align:left;font-size:18px}
@media (max-width:720px){.scalebar span{display:inline;font-size:10px}.scalebar a{flex-direction:column;gap:4px}.outcomes ul{flex-wrap:wrap}.outcomes li{flex:1 1 45%}}
@media (prefers-reduced-motion:reduce){.flow path{animation:none}}
.sh b{align-self:flex-start}.sstrip{padding-bottom:clamp(20px,3vw,40px)}.lab .sec.qlog{padding-top:clamp(30px,3vw,50px)}.lab .sec:has(.lim){padding-bottom:clamp(20px,3vw,40px)}

/* G2: the lamps sit on the tunnel; the verdict is stamped on the log */
.lab .bwin{height:auto;aspect-ratio:780/420;margin:0 -18px 6px}
.lab .bwin::after{background:linear-gradient(180deg,transparent 35%,rgba(27,31,34,.92) 78%)}
.lab .bwin .corridor{position:absolute;left:14px;right:14px;bottom:10px;margin:0;height:34px;z-index:2}
.lab .bwin .corridor .track,.lab .bwin .corridor .fill{display:none}
.lab .bwin .corridor li span{top:17px;width:24px;height:24px;border-radius:50%;border:0;background:#3A4146;color:#A9B1B5;font-size:12px;box-shadow:inset 0 1px 2px rgba(0,0,0,.6)}
.lab .bwin .corridor li.done span{background:var(--yellow);color:var(--ink);}
.lab .bwin .corridor li.now span{background:#fff;color:var(--ink);box-shadow:0 }
.check-grid{grid-template-columns:minmax(300px,380px) minmax(0,1fr)}
.lab .bcard .route-stamp{position:static;display:block;margin:14px 0 0;padding:12px 14px;font-size:17px;text-align:left;max-width:none;animation:press .5s cubic-bezier(.16,1,.3,1) both}
.lab .bcard .route-stamp[hidden]{display:none}
.lab .bcard:has(.route-stamp:not([hidden])){padding-bottom:18px}
@keyframes press{0%{transform:scale(1.5);opacity:0}100%{transform:none;opacity:1}}
.lab .gauge{position:relative;height:14px;border:0;background:repeating-linear-gradient(90deg,var(--ink) 0 1px,transparent 1px 10%) 0 100%/100% 6px no-repeat,var(--faint)}
.lab .gauge i{background:var(--yellow);height:8px}
.lab .gauge .needle{position:absolute;top:-8px;width:3px;height:26px;background:var(--ink);translate:-50% 0}
.vfee{display:flex;align-items:baseline;gap:12px;margin:6px 0 0;font:800 clamp(30px,3vw,44px)/1 var(--sans);font-stretch:70%}
.vfee span{font:500 12px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--mute)}
.send-h{margin-top:30px;font-stretch:72%}
.send-p{color:var(--mute);font-size:15.5px}
.check-shell .lede{text-wrap:pretty}
@media (max-width:720px){.check-grid .badge{order:0}.bwin{display:block!important}.lab .bcard .fields{grid-template-columns:1fr}.lab .bcard .fields li:not(.on){display:none}.lab .bcard .fields li{min-height:0;padding:5px 0}}
.sheets{height:clamp(460px,40vw,600px)}
.sh{width:68%}
@media (max-width:720px){.phfig{overflow:visible;margin-bottom:64px}.scalebar{left:0;right:0;bottom:-58px;border-radius:0}}
.lab .check-shell .check-grid{margin-top:clamp(24px,3vw,40px)}

/* G3: the rig takes half the stage, answers are indexed, the verdict is a stamp */
@media (min-width:1081px){
  .check-grid{grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);align-items:stretch}
  .check-grid .badge{position:relative;top:auto}
  .lab .badge .bcard{height:100%}
  .lab .bwin{aspect-ratio:auto;height:clamp(260px,24vw,340px)}
  .lab .bwin img{object-position:50% 55%}
  .lab .bcard .fields{grid-template-columns:1fr 1fr;column-gap:18px}
  .check-grid .quiz-panel{display:flex;flex-direction:column;justify-content:center}
}
.lab .bwin .corridor{height:44px}
.lab .bwin .corridor li span{width:30px;height:30px;font-size:12px;top:22px;border:2px solid #555D62}
.lab .bwin .corridor li.done span{border-color:var(--yellow)}
[data-question]{counter-reset:opt}
.lab .quiz-option{display:flex;align-items:center;gap:16px;counter-increment:opt;transition:background .15s,border-color .15s}
.lab .quiz-option::before{content:counter(opt,upper-alpha);flex:none;width:30px;height:30px;display:grid;place-items:center;font:700 13px/1 var(--mono);border:1.5px solid var(--ink);border-radius:2px;background:var(--sheet)}
.lab .quiz-option:hover::before,.lab .quiz-option:focus-visible::before{background:var(--ink);color:var(--yellow)}
.lab .bcard .route-stamp{position:relative;margin:18px 6px 4px;padding:12px 16px;background:transparent;color:var(--yellow);border:3px double var(--yellow);border-radius:3px;rotate:-2.5deg;font:700 19px/1.15 var(--mono);text-transform:uppercase;letter-spacing:.02em}
.lab .bcard .route-stamp small{display:block;font:500 12px/1 var(--mono);letter-spacing:.14em;color:#C9D0D3;margin-bottom:6px}
[data-result]{scroll-margin-top:110px}
.vfee{font-size:clamp(38px,4vw,58px)}
.lab .gauge .needle{background:var(--yellow);box-shadow:0 0 0 2px var(--ink);width:6px;border-radius:3px}
@media (max-width:720px){.lab .bcard:not(:has(.fields li.on)) .fields{display:none}.lab .bwin{aspect-ratio:780/360}}
@media (min-width:1081px){.check-grid:has([data-result]:not([hidden])){align-items:start}.check-grid:has([data-result]:not([hidden])) .badge{position:sticky;top:88px}.check-grid:has([data-result]:not([hidden])) .bcard{height:auto}}
.lab .cards-list{border:0;border-top:1px solid var(--ink);gap:0}
.lab .cards-list a{border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:transparent}
.lab .cards-list a:nth-child(2n){border-right:0}
.lab .cards-list a:hover{background:var(--paper);box-shadow:inset 4px 0 0 var(--yellow)}
.lab .pagehead .ghost{color:#C9CFD1;opacity:1}

/* H2: the guide opens on the test section, its instruments read the guide itself */
.art-hero{position:relative;background:var(--sheet);border-bottom:1px solid var(--ink)}
.ahw{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(300px,.9fr);gap:clamp(30px,5vw,80px);align-items:stretch}
.aht{padding:clamp(44px,6vw,96px) 0 clamp(34px,4vw,56px);align-self:end}
.aht .label{color:var(--mute);letter-spacing:.12em;margin:0 0 16px}
.aht h1{font-stretch:62%;font-size:clamp(42px,5.6vw,92px);line-height:.92;max-width:16ch;margin:0}
.art-hero .art-meter{display:flex;flex-direction:column;border-radius:0;margin-right:calc(-1 * max(var(--gut),calc((100vw - var(--max)) / 2 + var(--gut))))}
.art-hero .art-meter .mw{height:auto;flex:1;min-height:220px}
.art-hero .art-meter .mw img{object-position:50% 52%}
.art-hero .art-meter dl{display:grid;grid-template-columns:repeat(2,1fr);gap:0;padding:0}
.art-hero .art-meter dl div{flex-direction:column;align-items:flex-start;gap:8px;padding:16px 20px;border:0;border-top:1px solid #3A4146}
.art-hero .art-meter dl div:nth-child(2n){border-left:1px solid #3A4146}
.art-hero .art-meter dd{font-size:clamp(26px,2.4vw,36px)}
.art .art-head{display:none}
.art .article{padding-top:clamp(28px,3vw,48px)}
.article a.src{display:inline-block;font:500 12px/1 var(--mono);letter-spacing:.02em;text-decoration:none;color:var(--mute);border:1px solid var(--line);border-radius:2px;padding:3px 6px 2px;vertical-align:2px;white-space:nowrap;font-weight:500}
.article a.src::before{content:"↗ ";color:var(--ink)}
.article a.src:hover{border-color:var(--ink);color:var(--ink);background:var(--yellow)}
.answer a.src{vertical-align:3px}
@media (min-width:1180px){
  .art .art-nav{border-left:0;padding-left:30px;position:sticky}
  .art .art-nav::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--line)}
  .art .art-nav::after{content:"";position:absolute;left:0;top:0;width:2px;height:calc(var(--prog,0) * 100%);background:var(--yellow);}
  .art .art-nav a i{margin-left:-45px}
}
.foot{padding-left:var(--gut);padding-right:var(--gut)}
@media (max-width:1080px){.ahw{grid-template-columns:1fr}.art-hero .art-meter{margin:0 calc(-1 * var(--gut))}.art-hero .art-meter .mw{min-height:160px;max-height:200px}.aht{padding-bottom:22px}}
@media (max-width:720px){.art-hero .art-meter .mw{display:none}.art-hero .art-meter dl{grid-template-columns:repeat(4,1fr)}.art-hero .art-meter dl div{padding:12px 10px}.art-hero .art-meter dd{font-size:20px}.art-hero .art-meter dt{font-size:9.5px}}

/* G4: the rig reacts to answers */
.lab .bwin{--lit:0;--turb:0}
.lab .bwin img{filter:blur(calc(var(--turb) * 3px)) contrast(calc(1 + var(--turb) * .25));transition:filter .6s}
.lab .bwin::before{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;background:radial-gradient(ellipse 55% 40% at 50% 62%,rgba(255,212,0,.55),transparent 70%);opacity:calc(var(--lit) * .8);transition:opacity .6s;mix-blend-mode:screen}
.lab .bwin.run img{animation:run 1.4s cubic-bezier(.16,1,.3,1)}
@keyframes run{0%{transform:scale(1)}35%{transform:scale(1.06) translateX(-1.5%)}100%{transform:scale(1)}}
.lab .quiz-option:hover{background:#fff;border-color:var(--ink);box-shadow:inset 4px 0 0 var(--yellow)}
.lab .gauge .needle{width:2px;top:-10px;height:30px;border-radius:0;background:var(--ink);box-shadow:none}
.lab .gauge .needle::after{content:"";position:absolute;top:-6px;left:50%;translate:-50% 0;border:6px solid transparent;border-top-color:var(--ink)}
.lab .bcard .route-stamp{margin:22px 10px 12px;-webkit-mask:repeating-radial-gradient(circle at 30% 40%,#000 0 1.6px,rgba(0,0,0,.82) 1.7px 2.4px);mask:repeating-radial-gradient(circle at 30% 40%,#000 0 1.6px,rgba(0,0,0,.82) 1.7px 2.4px)}
@media (prefers-reduced-motion:reduce){.lab .bwin.run img{animation:none}}
.lab .bcard .route-stamp{font-size:clamp(26px,2.4vw,34px);padding:14px 18px;border-width:4px;line-height:1}
.vfee{align-items:center}
.vfee span{align-self:center}
.lab .gauge{background:linear-gradient(var(--ink),var(--ink)) 0 100%/1px 8px no-repeat,linear-gradient(var(--ink),var(--ink)) 33.33% 100%/1px 8px no-repeat,linear-gradient(var(--ink),var(--ink)) 66.66% 100%/1px 8px no-repeat,linear-gradient(var(--ink),var(--ink)) 100% 100%/1px 8px no-repeat,var(--faint)}
.verdict .lead-form .first textarea{min-height:206px}
@media (max-width:720px){.lab .bwin{aspect-ratio:780/430}.lab .bwin .corridor li span{width:24px;height:24px}}
/* H3 */
.nw{white-space:nowrap}
.art .article{max-width:none}
.art-grid .article>p,.art-grid .article>ul,.art-grid .article>ol,.art-grid .article>h2,.art-grid .article>h3{max-width:68ch}
.aht{align-self:center}
@media (min-width:1180px){.art .art-nav a{grid-template-columns:28px 1fr;gap:12px}.art .art-nav a i{position:relative;z-index:2;margin-left:-44px}.art .art-nav ol{position:relative;z-index:1}}
.midrig{display:grid;grid-template-columns:220px 1fr;gap:0;margin:2.4em 0;background:var(--steel);color:#fff;border-radius:3px;overflow:hidden;max-width:none}
.midrig img{width:100%;height:100%;object-fit:cover;object-position:50% 58%;border:0!important;border-radius:0!important}
.midrig div{padding:22px 24px;display:grid;gap:14px;align-content:center}
.midrig p{margin:0;font:700 clamp(19px,1.7vw,24px)/1.25 var(--sans)!important;font-stretch:84%!important;color:#fff}
.midrig .button{justify-self:start;text-decoration:none;color:var(--ink)}
@media (max-width:720px){.midrig{grid-template-columns:1fr}.midrig img{height:140px}.art-hero .art-meter .mw{display:block;min-height:120px;max-height:140px}}
/* H4: tables as spec sheets, its own bench mid-article, one yellow action at a time */
.art .article table{font-size:15px}
.art .article thead th{background:var(--steel);color:var(--yellow);border-bottom:0;font-weight:500;letter-spacing:.1em}
.art .article tbody td:first-child{font-weight:800;font-stretch:80%;font-size:16.5px;box-shadow:inset 4px 0 0 var(--yellow);background:var(--paper)}
.art .article tbody tr:nth-child(2n) td:not(:first-child){background:rgba(255,255,255,.45)}
.midrig{grid-template-columns:260px 1fr}
.midrig .bench{position:relative;display:flex;align-items:flex-end;justify-content:center;padding:26px 18px 30px;background:radial-gradient(ellipse 70% 40% at 50% 85%,rgba(255,212,0,.22),transparent 70%),#262B2F}
.midrig .bench img{width:92%;height:auto;position:relative;z-index:1;margin-bottom:-2px}
.midrig .bench i{position:absolute;left:50%;bottom:24px;translate:-50% 0;width:88%;height:16px;border:3px solid var(--yellow);border-radius:50%}
.midrig .bench span{position:absolute;left:12px;top:12px;font:700 13px/1 var(--mono);color:var(--yellow);background:#111;padding:5px 7px;border-radius:2px}
@media (min-width:1180px){.art .art-nav .exit{background:transparent;border:1.5px solid var(--ink);color:var(--ink)}.art .art-nav .exit:hover{background:var(--yellow)}.art .art-nav .label{margin-left:0}.art .art-nav a{grid-template-columns:0 1fr;gap:0}.art .art-nav a span{padding-left:0}}
.art .article .answer{font:700 clamp(21px,1.8vw,25px)/1.25 var(--sans);font-stretch:82%}
.art-hero .art-meter dd{white-space:nowrap}
@media (max-width:720px){.art-hero .art-meter .mw img{object-position:50% 62%}.art-hero .art-meter dl{grid-template-columns:repeat(2,1fr)}.midrig .bench{min-height:150px}}
.lab .reel-strip span{color:#6B747A}
@media (max-width:720px){.midrig{grid-template-columns:1fr}.midrig .bench{min-height:170px}.art-hero .art-meter .mw{max-height:150px}.art-hero .art-meter .mw img{transform:scale(1.9);transform-origin:50% 56%}}
@media (max-width:720px){.art-hero .art-meter .mw img{transform:none;object-position:50% 60%}.art-hero .art-meter .mw{height:170px;max-height:none;flex:none}}
@media (max-width:1080px) and (min-width:861px){.nav-links a span.t{display:inline}.nav-links a{padding:0 9px;font-size:14px}.nav-links{gap:2px}}
html[lang=fr] .tunnel h1{font-size:min(8.75vw,15vh,132px)}
/* impeccable detect pass: legibility first, no decorative glow */
.sc .where,.art-meter dt,.phfig .where,.readout .rl,.screen .rl,.lot dt,.vs dt,.qlog .qn,.sh small,.lamps span,.scalebar a,.lead-form .spec label{font-size:12px!important}
.readout .rw,.lab .reel-strip span.on.go,.lab .reel-strip span.on.gif,.lab .reel-strip span.on.no{text-shadow:none}
.lamps .on i,.lamps .on[data-k=no] i,.lamps .on[data-k=go] i,.lab .corridor li.now span,.lab .bwin .corridor li.done span,.istrip li::before,.scalebar a[aria-current] i,.sc4 .lamp i,.lab .bcard .slot,.sheets .sring,.lab .gauge .needle{box-shadow:none}
.lab .bwin .corridor li.now span{outline:3px solid var(--yellow);outline-offset:1px}
.screen{box-shadow:inset 0 0 0 1px rgba(255,255,255,.07)}
.lab .bcard .route-stamp{animation:press .5s cubic-bezier(.16,1,.3,1) both}
.stops .k,.corridor .fill{transition:none}
.art .article .answer{border:1px solid var(--ink);border-radius:3px;line-height:1.34}
.art .article .answer .label{background:var(--yellow);color:var(--ink);padding:3px 6px;display:inline-block}
.art .article blockquote,.art .article .cta-final,.art .article .callout{border-left:1px solid var(--ink)}
.midrig p{line-height:1.34!important}
.midrig .bench{background:#262B2F}
.aht .label{display:none}
.istrip ul{text-transform:none;letter-spacing:.02em;font-size:13px}
.art-grid .article>p,.art-grid .article>ul,.art-grid .article>ol{max-width:64ch}
.lab .faq .ans{max-width:60ch}
.lab .reel .rule{max-width:56ch}
.lab .price.ticket{background:var(--steel)}
.lab .price.ticket::before{content:"";position:absolute;left:0;top:0;bottom:0;width:14px;background:radial-gradient(circle at 0 50%,var(--sheet) 0 7px,transparent 7.5px) 0 0/14px 22px repeat-y}

.protocol .tag,.exhibit .bar .tag,.istrip li{text-transform:none}