:root{
  --blue:#9db0ff; --blue-deep:#0b1470; --blue-ink:#0d1557; --violet:#6a4ff2; --violet-soft:#8f7cf7;
  --cobalt:#2449ff; --cobalt-deep:#1a33d6;
  --orange:#ff5a1f; --orange-hot:#ff7a45; --white:#ffffff; --cream:rgba(120,150,255,.08); --ink:#f3f6ff; --ink-soft:#c9d3ff;
  --bg:#04071a; --bg2:#060b26; --bg3:#080f33;
  --edge:rgba(150,178,255,.38); --edge-hi:rgba(255,255,255,.42); --glass:rgba(16,28,86,.42); --glass-hi:rgba(28,46,130,.5);
  --text:#d7dfff;
  --nav-h:84px; --radius:28px;
  --ease:cubic-bezier(.22,1,.36,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:hidden}
body{font-family:'Montserrat',system-ui,sans-serif;font-size:19px;line-height:1.6;color:var(--text);background:var(--bg);font-weight:500}
body::after{content:"";position:fixed;inset:0;z-index:200;pointer-events:none;opacity:.16;mix-blend-mode:overlay;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");background-size:240px 240px}
h1,h2,h3,h4,.deck h3,.dcard h3,.chapters h3,.kit-list h3,.kit-cards h3,summary,.stat b,.teacher .ph .name b{color:#fff}
img{display:block;max-width:100%}
a{color:var(--blue);text-decoration:none}
a:hover{color:#fff}
button,input{font:inherit}
::selection{background:var(--orange);color:#fff}
.serif{font-family:'Instrument Serif',Georgia,serif;font-style:italic;font-weight:400;letter-spacing:-.01em}
.wrap{width:min(1240px,100% - clamp(32px,6vw,96px));margin-inline:auto}
h1,h2,h3{font-weight:800;line-height:1.02;letter-spacing:-.025em;text-wrap:balance}
h2{font-size:clamp(38px,5.2vw,68px)}
h3{font-size:clamp(24px,2.4vw,32px);letter-spacing:-.015em;line-height:1.15}
p{text-wrap:pretty}
.lead{font-size:clamp(19px,1.5vw,23px);line-height:1.55;max-width:62ch}

/* noise + gradient ground */
.ground{position:relative;isolation:isolate;color:#fff;overflow:hidden;background:linear-gradient(180deg,var(--bg2) 0%,var(--bg) 100%)}
.ground.hero{background:linear-gradient(180deg,#03061a 0%,#060c2d 60%,#070f3a 100%)}
.ground::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;opacity:.3;mix-blend-mode:soft-light;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  background-size:240px 240px}
.ground a{color:#fff}
.ground a:hover{color:var(--orange-hot)}
.glow{display:none}

/* buttons */
@property --ang{syntax:"<angle>";inherits:false;initial-value:0deg}
.btn{--c:var(--orange);position:relative;display:inline-flex;align-items:center;gap:14px;padding:18px 28px;border-radius:16px;font-weight:700;font-size:18px;line-height:1;border:0;cursor:pointer;text-decoration:none;overflow:hidden;isolation:isolate;transition:transform .5s var(--ease),box-shadow .5s var(--ease),background .4s;white-space:nowrap;min-height:56px;color:#fff}
.btn:active{transform:scale(.97)}
.btn .t{display:grid;height:1.1em;overflow:hidden;line-height:1.1}
.btn .t span{grid-area:1/1;display:block;transition:transform .5s var(--ease)}
.btn .t span:nth-child(2){transform:translateY(110%)}
.btn:hover .t span:nth-child(1){transform:translateY(-110%)}
.btn:hover .t span:nth-child(2){transform:translateY(0)}
.btn .ic{width:26px;height:26px;border-radius:8px;display:grid;place-items:center;flex:none;transition:transform .5s var(--ease),background .5s var(--ease)}
.btn .ic svg{width:14px;height:14px}
/* primary: orange glass, light sweeps across the surface */
.btn-primary{background:linear-gradient(180deg,#ff7a45 0%,var(--orange) 45%,#e8440f 100%);box-shadow:inset 0 1px 0 rgba(255,255,255,.55),inset 0 -1px 0 rgba(120,30,0,.5),0 0 0 1px rgba(255,140,100,.45),0 18px 44px -16px rgba(255,90,31,.85)}
.btn-primary::before{content:"";position:absolute;inset:-40% auto -40% -60%;width:50%;z-index:-1;background:linear-gradient(100deg,transparent 0%,rgba(255,255,255,.55) 50%,transparent 100%);transform:skewX(-18deg) translateX(0);transition:transform .9s var(--ease)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:inset 0 1px 0 rgba(255,255,255,.7),inset 0 -1px 0 rgba(120,30,0,.5),0 0 0 1px rgba(255,170,140,.7),0 26px 54px -16px rgba(255,90,31,1)}
.btn-primary:hover::before{transform:skewX(-18deg) translateX(420%)}
.btn-primary .ic{background:rgba(255,255,255,.25);box-shadow:inset 0 1px 0 rgba(255,255,255,.5)}
.btn-primary:hover .ic{transform:rotate(-45deg) scale(1.1);background:rgba(255,255,255,.4)}
/* ghost: clear glass, cobalt light rises from the floor */
.btn-ghost{background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge),0 18px 40px -22px rgba(0,0,0,.8)}
.btn-ghost::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(36,73,255,0),rgba(36,73,255,.85));transform:translateY(101%);transition:transform .6s var(--ease)}
.btn-ghost:hover{color:#fff;transform:translateY(-2px);box-shadow:inset 0 1px 0 rgba(255,255,255,.7),0 0 0 1px rgba(170,195,255,.85),0 0 32px -6px rgba(36,73,255,.75),0 22px 44px -22px rgba(0,0,0,.9)}
.btn-ghost:hover::before{transform:translateY(0)}
.btn-ghost .ic{box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.75)}
.btn-ghost:hover .ic{transform:translateX(4px);background:rgba(255,255,255,.18)}
/* dark: aluminium glass, a light runs around the edge */
.btn-dark{background:linear-gradient(180deg,rgba(40,60,150,.55),rgba(14,24,80,.6));backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge),0 18px 40px -22px rgba(0,0,0,.8)}
.btn-dark::before{content:"";position:absolute;inset:0;z-index:-1;padding:1.5px;border-radius:inherit;background:conic-gradient(from var(--ang),transparent 0 70%,rgba(255,255,255,.95) 85%,rgba(140,170,255,.9) 92%,transparent 100%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .3s}
.btn-dark:hover{color:#fff;transform:translateY(-2px);background:linear-gradient(180deg,rgba(50,76,190,.65),rgba(20,34,110,.7))}
.btn-dark:hover::before{opacity:1;animation:trace 1.6s linear infinite}
@keyframes trace{to{--ang:360deg}}
.btn-dark .ic{background:rgba(255,255,255,.14);box-shadow:inset 0 1px 0 rgba(255,255,255,.35)}
.btn-dark:hover .ic{transform:rotate(-45deg);background:rgba(255,255,255,.26)}

/* nav */
header.nav{position:fixed;inset:0 0 auto;height:72px;z-index:50;display:flex;align-items:center;transform:translateY(-110%);transition:transform .55s var(--ease),background .4s,box-shadow .4s}
.nav.solid{transform:none}
.nav.solid{background:rgba(6,11,38,.72);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);box-shadow:0 1px 0 var(--edge)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:inline-flex;align-items:center;font-weight:800;font-size:22px;letter-spacing:.02em;color:#fff;text-decoration:none;line-height:1}
.logo:hover{color:#fff}
.logo .play{width:1.05em;height:1.05em;border-radius:50%;background:var(--orange);display:inline-grid;place-items:center;margin:0 .02em;transition:transform .5s var(--ease)}
.logo:hover .play{transform:rotate(360deg)}
.logo .play svg{width:.5em;height:.5em;margin-left:.08em}
.logo .dot{color:var(--orange)}
.nav-links{display:flex;gap:36px;align-items:center}
.nav-links a{color:#fff;font-weight:600;font-size:17px;position:relative;padding:6px 0}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:#fff;box-shadow:0 0 10px rgba(160,185,255,.9);transform:scaleX(0);transform-origin:right;transition:transform .45s var(--ease)}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after{transform:scaleX(1);transform-origin:left}
.nav-right{display:flex;align-items:center;gap:8px;flex:none}
.nav .logo{flex:none}
.nav-cta{padding:14px 22px;min-height:48px;font-size:17px;border-radius:12px}
.nav-cta .t-short{display:none}
.nav.menu-open{transform:none}
.burger{display:none;width:48px;height:48px;border:0;background:transparent;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:7px}
.burger span{width:28px;height:2.5px;background:#fff;border-radius:2px;transition:transform .4s var(--ease),opacity .3s}
.burger.open span:nth-child(1){transform:translateY(9.5px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-9.5px) rotate(-45deg)}
.mobile-menu{position:fixed;inset:0;z-index:45;display:flex;flex-direction:column;justify-content:center;padding:120px 32px 48px;gap:8px;background:linear-gradient(180deg,#04071a,#070f3a);transform:translateY(-100%);transition:transform .6s var(--ease);visibility:hidden}
.mobile-menu.open{transform:none;visibility:visible}
.mobile-menu a{color:#fff;font-size:34px;font-weight:800;padding:12px 0;border-bottom:1px solid var(--edge);display:flex;justify-content:space-between;align-items:center}
.mobile-menu a:hover{color:var(--orange-hot)}
.mobile-menu .btn{margin-top:28px;justify-content:center;border-bottom:0}

/* hero */
.hero{min-height:100svh;padding:clamp(32px,6vh,72px) 0 200px;display:flex;align-items:center;overflow:hidden}
.hero .spot{display:none}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);grid-template-areas:"copy visual";gap:clamp(36px,5vw,80px) clamp(40px,5vw,72px);align-items:center;position:relative;z-index:2}
.hero .copy{grid-area:copy}
.hero .visual{grid-area:visual}

.hero .horizon{position:absolute;left:0;right:0;bottom:0;height:clamp(150px,24vh,260px);z-index:1;pointer-events:none;background:linear-gradient(180deg,rgba(60,95,255,.26) 0%,rgba(60,95,255,.08) 45%,rgba(60,95,255,0) 100%);border-top:1px solid rgba(175,195,255,.55);box-shadow:0 -1px 30px -4px rgba(90,125,255,.55)}
.hero .horizon::before{content:"";position:absolute;left:0;right:0;top:0;height:100%;background:repeating-linear-gradient(90deg,rgba(150,178,255,.0) 0 118px,rgba(150,178,255,.12) 118px 119px);mask-image:linear-gradient(#000,transparent 70%);-webkit-mask-image:linear-gradient(#000,transparent 70%)}
.hero .badge{display:inline-flex;align-items:center;gap:10px;padding:9px 16px;border-radius:12px;background:var(--glass);border:1px solid var(--edge);box-shadow:inset 0 1px 0 var(--edge-hi);font-weight:600;font-size:17px;margin-bottom:24px;backdrop-filter:blur(8px)}
.hero .badge i{width:9px;height:9px;border-radius:50%;background:#fff;box-shadow:0 0 10px 2px rgba(160,185,255,.9);display:block;animation:pulse 2s infinite}
.hero h1{font-size:clamp(38px,4.8vw,70px);margin-bottom:36px;max-width:15ch}
.hero h1 .mark{position:relative;display:inline-block;white-space:nowrap}
.hero h1 .mark .serif{color:#fff;font-size:1.08em;position:relative;z-index:1}
.hero h1 .mark svg{position:absolute;left:-2%;right:-2%;bottom:-.3em;width:104%;height:.38em;overflow:visible}
.hero h1 .mark svg path{fill:none;stroke:#fff;stroke-width:5;filter:drop-shadow(0 0 8px rgba(160,185,255,.95));stroke-linecap:round;stroke-dasharray:1;stroke-dashoffset:1;animation:draw 1.1s var(--ease) .9s forwards}
@keyframes draw{to{stroke-dashoffset:0}}
.hero .sub{font-size:clamp(19px,1.45vw,22px);line-height:1.5;max-width:46ch;margin-bottom:30px;color:var(--text);font-weight:500}
.hero .cta-row{display:flex;flex-wrap:wrap;gap:16px 24px;align-items:center;margin-top:20px}
.hero .faces{display:flex;align-items:center;gap:14px;font-weight:600;font-size:17px;line-height:1.3}
.hero .faces .avs{display:flex;flex:none}
.hero .faces .av{width:48px;height:48px;border-radius:50%;overflow:hidden;border:2px solid rgba(190,205,255,.8);background:#0a1240;margin-left:-14px;box-shadow:0 6px 18px -6px rgba(0,0,0,.5)}
.hero .faces .av:first-child{margin-left:0}
.hero .faces .av img{width:100%;height:100%;object-fit:cover}
/* interactive course console */
.visual{display:flex;flex-direction:column;align-items:center;gap:26px;position:relative}
.console{position:relative;width:min(100%,460px);padding-top:28px}
.eq{position:absolute;left:-6%;right:-6%;bottom:0;height:46%;display:flex;align-items:flex-end;justify-content:space-between;gap:3px;pointer-events:none;z-index:0;mask-image:linear-gradient(90deg,transparent,#000 15%,#000 85%,transparent);-webkit-mask-image:linear-gradient(90deg,transparent,#000 15%,#000 85%,transparent)}
.eq i{--h:.3;flex:1;height:calc(var(--h) * 100%);border-radius:3px 3px 0 0;background:linear-gradient(180deg,rgba(255,255,255,.95),rgba(120,150,255,.35) 60%,rgba(120,150,255,0));box-shadow:0 0 12px rgba(150,178,255,.6);transform-origin:bottom;animation:eq 3.2s ease-in-out infinite;animation-delay:calc(var(--i) * -.21s);transition:height .35s var(--ease)}
.eq.live i{animation-play-state:paused}
@keyframes eq{0%,100%{transform:scaleY(.55)}50%{transform:scaleY(1)}}
.stack{position:relative;width:100%;aspect-ratio:1/1.06;perspective:1600px;touch-action:pan-y;z-index:1;}
@media (min-width:641px){.stack{-webkit-box-reflect:below 6px linear-gradient(transparent 84%,rgba(0,0,0,.22))}}
.console{margin-bottom:34px}
.stack .tilt{position:absolute;inset:0;transform-style:preserve-3d;transition:transform .3s ease-out;will-change:transform}
.dcard{position:absolute;inset:0;border-radius:22px;padding:clamp(24px,2.6vw,36px);display:flex;flex-direction:column;cursor:pointer;transition:transform .9s var(--ease),opacity .9s var(--ease),box-shadow .9s var(--ease);box-shadow:inset 0 1px 0 var(--edge-hi),inset 0 -1px 0 rgba(150,178,255,.18),0 0 0 1px var(--edge),0 60px 100px -30px rgba(0,0,0,.9);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);user-select:none;-webkit-user-select:none;overflow:hidden}
.dcard::after{content:"";position:absolute;left:8%;right:8%;top:0;height:1px;background:linear-gradient(90deg,transparent,#fff 30%,#fff 70%,transparent);opacity:.9;filter:drop-shadow(0 0 8px rgba(190,205,255,1));z-index:2;pointer-events:none}
.dcard[data-c="1"]{background:#070d33;color:#fff}
.dcard .media{position:absolute;inset:0;z-index:0;pointer-events:none}
.dcard .media video{width:100%;height:100%;object-fit:cover;display:block;transform:scale(1.04)}
.dcard .media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,8,30,.3) 0%,rgba(5,8,30,.15) 35%,rgba(5,8,30,.9) 70%,rgba(5,8,30,.97) 100%)}
.dcard > :not(.media){position:relative;z-index:1}
.dcard .rec{display:inline-flex;align-items:center;gap:8px;padding:6px 12px;border-radius:10px;background:rgba(5,8,30,.6);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge);backdrop-filter:blur(6px);font-size:17px;font-weight:700;color:#fff}
.dcard .rec i{width:9px;height:9px;border-radius:50%;background:#ff3b3b;box-shadow:0 0 10px #ff3b3b;display:block;animation:blink 1.4s steps(1) infinite}
@keyframes blink{50%{opacity:.25}}


/* deck card art: one staged 2D scene per course (6.5s loop); only the front card plays */
.dcard .art{flex:1 1 0;display:grid;place-items:center;min-height:0;margin:4px 0 6px;overflow:hidden}
.dcard .art svg{height:100%;max-height:170px;width:auto;max-width:min(62%,220px);overflow:visible;filter:drop-shadow(0 18px 30px rgba(0,0,0,.45))}
.dcard .art [class~="a1"],.dcard .art [class~="a2"],.dcard .art [class~="a3"]{animation-duration:6.5s;animation-timing-function:cubic-bezier(.22,1,.36,1);animation-iteration-count:infinite;animation-play-state:paused;transform-box:fill-box;transform-origin:center}
.dcard[data-pos="0"] .art [class~="a1"],.dcard[data-pos="0"] .art [class~="a2"],.dcard[data-pos="0"] .art [class~="a3"]{animation-play-state:running}
.dcard .art .scene{animation-name:sceneFade;transform-box:view-box;transform-origin:50% 50%}
@keyframes sceneFade{0%{opacity:0;transform:translateY(6px)}5%,90%{opacity:1;transform:none}97%,100%{opacity:0;transform:translateY(-4px)}}
/* 1: prompt types, a beam sweeps the window and the site materialises behind it, the cursor clicks the button */
.a1.type{stroke-dasharray:1;animation-name:k1type}
@keyframes k1type{0%,7%{stroke-dashoffset:1}26%,100%{stroke-dashoffset:0}}
.a1.caret{animation-name:k1caret;transform-box:view-box}
@keyframes k1caret{0%,6%{opacity:0;transform:translateX(0)}7%{opacity:1}26%{transform:translateX(62px);opacity:1}30%{opacity:1}31%,100%{opacity:0;transform:translateX(62px)}}
.a1.star{animation-name:k1star;opacity:0}
@keyframes k1star{0%,26%{opacity:0;transform:scale(.2) rotate(-40deg)}30%{opacity:1;transform:scale(1.3) rotate(10deg)}34%{transform:scale(1) rotate(0)}100%{opacity:1;transform:scale(1) rotate(0)}}
.a1.beam{animation-name:k1beam;transform-box:view-box;animation-timing-function:linear;opacity:0}
@keyframes k1beam{0%,31%{opacity:0;transform:translateY(0)}33%{opacity:1}50%{opacity:1;transform:translateY(44px)}53%,100%{opacity:0;transform:translateY(44px)}}
.a1.b{opacity:0;animation-name:k1block;transform-box:view-box}
.a1.hero{animation-delay:0s}.a1.l1{animation-name:k1block2}.a1.l2{animation-name:k1block3}.a1.l3{animation-name:k1block4}
@keyframes k1block{0%,35%{opacity:0;transform:translateY(5px)}40%,100%{opacity:1;transform:none}}
@keyframes k1block2{0%,38%{opacity:0;transform:translateY(5px)}43%,100%{opacity:1;transform:none}}
@keyframes k1block3{0%,41%{opacity:0;transform:translateY(5px)}46%,100%{opacity:1;transform:none}}
@keyframes k1block4{0%,44%{opacity:0;transform:translateY(5px)}49%,100%{opacity:1;transform:none}}
.a1.btn{animation-name:k1btn;transform-box:fill-box}
@keyframes k1btn{0%,47%{opacity:0;transform:scale(.6)}52%{opacity:1;transform:scale(1.12)}56%{transform:scale(1)}66%{transform:scale(1)}69%{transform:scale(.92)}72%,100%{opacity:1;transform:scale(1)}}
.a1.cur{animation-name:k1cur;transform-box:view-box;opacity:0}
@keyframes k1cur{0%,54%{opacity:0;transform:translate(126px,104px)}57%{opacity:1}66%{transform:translate(98px,90px) scale(1)}69%{transform:translate(98px,90px) scale(.85)}72%{transform:translate(98px,90px) scale(1)}84%{opacity:1;transform:translate(98px,90px)}88%,100%{opacity:0;transform:translate(104px,98px)}}
.a1.ring{animation-name:k1ring;opacity:0}
@keyframes k1ring{0%,68%{opacity:0;transform:scale(.4)}70%{opacity:.9}82%,100%{opacity:0;transform:scale(2.6)}}
/* 2: the proposal gets signed by a moving pen, the seal lands, income climbs month by month */
.a2.sig{stroke-dasharray:1;animation-name:k2sig}
@keyframes k2sig{0%,10%{stroke-dashoffset:1}36%,100%{stroke-dashoffset:0}}
.a2.pen{offset-path:path("M34 88c4-12 8-14 10-4s4 10 8 0 6-6 8 2 5 6 9-3 5-4 8 1 5 2 10-5");offset-rotate:0deg;animation-name:k2pen;animation-timing-function:cubic-bezier(.4,0,.2,1);opacity:0}
@keyframes k2pen{0%,9%{offset-distance:0%;opacity:0}10%{opacity:1}36%{offset-distance:100%;opacity:1}39%,100%{offset-distance:100%;opacity:0}}
.a2.seal{animation-name:k2seal;transform-box:fill-box;opacity:0}
@keyframes k2seal{0%,38%{opacity:0;transform:scale(.3) rotate(-25deg)}43%{opacity:1;transform:scale(1.18) rotate(4deg)}47%,100%{opacity:1;transform:scale(1) rotate(0)}}
.a2.chk{stroke-dasharray:1;animation-name:k2chk}
@keyframes k2chk{0%,43%{stroke-dashoffset:1}50%,100%{stroke-dashoffset:0}}
.a2.ring{animation-name:k2ring;opacity:0}
@keyframes k2ring{0%,41%{opacity:0;transform:scale(.6)}43%{opacity:.9}56%,100%{opacity:0;transform:scale(2.4)}}
.a2.bar{transform-origin:50% 100%;transform:scaleY(0)}
.a2.b1{animation-name:k2b1}.a2.b2{animation-name:k2b2}.a2.b3{animation-name:k2b3}
@keyframes k2b1{0%,48%{transform:scaleY(0)}56%,100%{transform:scaleY(1)}}
@keyframes k2b2{0%,53%{transform:scaleY(0)}61%,100%{transform:scaleY(1)}}
@keyframes k2b3{0%,58%{transform:scaleY(0)}66%,100%{transform:scaleY(1)}}
.a2.trend{stroke-dasharray:1;stroke-dashoffset:1;animation-name:k2trend;opacity:0}
@keyframes k2trend{0%,64%{stroke-dashoffset:1;opacity:0}66%{opacity:1}76%,100%{stroke-dashoffset:0;opacity:1}}
.a2.coin{animation-name:k2coin;transform-box:view-box;opacity:0}
@keyframes k2coin{0%,72%{opacity:0;transform:translateY(-16px)}76%{opacity:1;transform:translateY(0)}79%{transform:translateY(-5px)}82%,100%{opacity:1;transform:translateY(0)}}
/* 3: the search is typed, the orange result climbs to the top with overshoot and gets clicked */
.a3.type{stroke-dasharray:1;animation-name:k3type}
@keyframes k3type{0%,5%{stroke-dashoffset:1}22%,100%{stroke-dashoffset:0}}
.a3.caret{animation-name:k3caret;transform-box:view-box}
@keyframes k3caret{0%,4%{opacity:0;transform:translateX(0)}5%{opacity:1}22%{transform:translateX(58px);opacity:1}25%{opacity:1}26%,100%{opacity:0;transform:translateX(58px)}}
.a3.rowO{animation-name:k3O;transform-box:view-box;animation-timing-function:cubic-bezier(.34,1.4,.64,1);filter:drop-shadow(0 0 10px rgba(255,90,31,.75))}
@keyframes k3O{0%,27%{transform:translateY(0)}33%,38%{transform:translateY(-24px)}44%,100%{transform:translateY(-48px)}}
.a3.rowB{animation-name:k3B;transform-box:view-box;animation-timing-function:cubic-bezier(.34,1.3,.64,1)}
@keyframes k3B{0%,27%{transform:translateY(0)}33%,100%{transform:translateY(24px)}}
.a3.rowA{animation-name:k3A;transform-box:view-box;animation-timing-function:cubic-bezier(.34,1.3,.64,1)}
@keyframes k3A{0%,38%{transform:translateY(0)}44%,100%{transform:translateY(24px)}}
.a3.cur{animation-name:k3cur;transform-box:view-box;opacity:0}
@keyframes k3cur{0%,48%{opacity:0;transform:translate(34px,40px)}51%{opacity:1}60%{transform:translate(0,0) scale(1)}63%{transform:translate(0,0) scale(.85)}66%{transform:translate(0,0) scale(1)}82%{opacity:1;transform:translate(0,0)}86%,100%{opacity:0;transform:translate(8px,10px)}}
.a3.flash{animation-name:k3flash;opacity:0}
@keyframes k3flash{0%,62%{opacity:0}64%{opacity:.55}72%,100%{opacity:0}}
.a3.ripple{animation-name:k3ripple;opacity:0}
@keyframes k3ripple{0%,62%{opacity:0;transform:scale(.4)}64%{opacity:.9}76%,100%{opacity:0;transform:scale(3)}}
.a3.chk{stroke-dasharray:1;stroke-dashoffset:1;animation-name:k3chk}
@keyframes k3chk{0%,65%{stroke-dashoffset:1}72%,100%{stroke-dashoffset:0}}
@media (prefers-reduced-motion:reduce){.dcard .art *{animation:none!important;opacity:1!important;stroke-dashoffset:0!important;transform:none!important}.a2.pen,.a1.cur,.a3.cur,.a1.beam,.a1.ring,.a2.ring,.a3.ripple,.a3.flash{display:none}}
.dcard[data-c="2"]{background:linear-gradient(180deg,rgba(30,52,150,.7),rgba(8,14,56,.92));color:#fff}
.dcard[data-c="3"]{background:linear-gradient(180deg,rgba(70,50,180,.6),rgba(10,14,62,.92));color:#fff}
.dcard[data-pos="0"]{transform:translate3d(0,0,0) scale(1);z-index:3;opacity:1}
.dcard[data-pos="1"]{transform:translate3d(0,-26px,-110px) scale(.95);z-index:2;opacity:.95}
.dcard[data-pos="2"]{transform:translate3d(0,-50px,-220px) scale(.9);z-index:1;opacity:.85}
.dcard[data-pos="1"] > :not(.ch),.dcard[data-pos="2"] > :not(.ch){opacity:0;transition:opacity .3s}
.dcard .ch{display:flex;justify-content:space-between;align-items:center;font-weight:700;font-size:17px;margin-bottom:auto}
.dcard .ch .num{width:48px;height:48px;border-radius:14px;background:rgba(255,255,255,.1);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge);color:#fff;display:grid;place-items:center;font-size:20px;font-weight:800}
.dcard h3{font-size:clamp(26px,2.4vw,34px);line-height:1.1;margin:18px 0 12px}
.dcard p{font-size:18px;line-height:1.5;color:var(--text)}
.dcard .steps{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 22px}
.dcard .steps span{padding:8px 14px;border-radius:10px;font-size:17px;font-weight:600;background:rgba(255,255,255,.07);box-shadow:inset 0 1px 0 rgba(255,255,255,.3),0 0 0 1px var(--edge);display:inline-flex;align-items:center;gap:8px}
.dcard .steps span::before{content:"";width:7px;height:7px;border-radius:50%;background:#fff;box-shadow:0 0 8px rgba(160,185,255,.9);display:block}
.dcard .bar{height:3px;border-radius:4px;background:rgba(150,178,255,.2);overflow:hidden}
.dcard .bar i{display:block;height:100%;width:100%;background:var(--orange);box-shadow:0 0 12px rgba(255,90,31,.9);transform:scaleX(0);transform-origin:left}
.dcard[data-pos="0"] .bar i{transform:scaleX(1);transition:transform .6s var(--ease)}
.stack.paused .dcard .bar i{animation-play-state:paused}
@keyframes fill{to{transform:scaleX(1)}}
/* course selector rail */
.dots{position:relative;z-index:5;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:4px;width:min(100%,460px);padding:4px;border-radius:14px;background:var(--glass);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);position:relative;z-index:2}
.dots button{display:flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:8px 10px;border:0;border-radius:10px;background:transparent;color:var(--text);font-weight:700;font-size:17px;cursor:pointer;transition:background .35s,color .35s,box-shadow .35s}
.dots button i{width:8px;height:8px;border-radius:50%;background:rgba(190,205,255,.55);display:block;transition:background .35s,box-shadow .35s,transform .35s var(--ease)}
.dots button:hover{color:#fff;background:rgba(120,150,255,.1)}
.dots button[aria-current="true"]{color:#fff;background:linear-gradient(180deg,rgba(36,73,255,.45),rgba(36,73,255,.18));box-shadow:inset 0 1px 0 rgba(255,255,255,.45),0 0 0 1px rgba(170,195,255,.6),0 0 22px -6px rgba(36,73,255,.9)}
.dots button[aria-current="true"] i{background:var(--orange);box-shadow:0 0 12px rgba(255,90,31,1);transform:scale(1.25)}
.dots button span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.stack-hint{position:relative;z-index:5;font-size:17px;font-weight:600;color:var(--text);display:flex;align-items:center;gap:10px}
.stack-hint svg{width:20px;height:20px}
/* stats: auto-rolling trust ticker */
.hero .copy{min-width:0}
.hero .trust{margin:26px 0 0;overflow:hidden;mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);-webkit-mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent)}
.stats{display:flex;width:max-content;padding:4px 0;animation:statroll 26s linear infinite}
.hero .trust:hover .stats{animation-play-state:paused}
@keyframes statroll{to{transform:translateX(-50%)}}
.stat{display:flex;align-items:center;gap:12px;margin-right:12px;padding:12px 20px;border-radius:14px;background:var(--glass);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge);white-space:nowrap}
.stat b{font-variant-numeric:tabular-nums;font-size:clamp(24px,2vw,30px);font-weight:800;letter-spacing:-.03em;line-height:1;color:#fff}
.stat b em{font-style:normal;color:var(--orange-hot)}
.stat span{font-size:17px;font-weight:600;color:var(--text);line-height:1.3}
.stat .stars{display:flex;gap:2px}
.stat .stars svg{width:15px;height:15px;fill:#fff;filter:drop-shadow(0 0 5px rgba(160,185,255,.9))}
@media (prefers-reduced-motion:reduce){.stats{animation:none;flex-wrap:wrap;width:auto;gap:12px 0}.stat.dup{display:none}.hero .trust{mask-image:none;-webkit-mask-image:none}}
.form{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:clamp(20px,2.4vw,28px);border-radius:20px;background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);color:#fff;width:100%;max-width:620px;box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge),0 40px 90px -30px rgba(0,0,0,.9);text-align:left}
.form .field{display:grid;gap:8px;min-width:0}
.form label{font-weight:700;font-size:17px;color:#fff}
.form input{width:100%;min-width:0;height:60px;padding:0 20px;border-radius:12px;border:1px solid var(--edge);background:rgba(4,8,30,.55);color:#fff;font-size:18px;font-weight:500;outline:none;box-shadow:inset 0 1px 0 rgba(255,255,255,.12);transition:border-color .25s,box-shadow .25s,background .25s}
.form input::placeholder{color:#a9b6f0}
.form input:hover{border-color:rgba(190,205,255,.7)}
.form input:focus{border-color:#fff;box-shadow:inset 0 1px 0 rgba(255,255,255,.3),0 0 0 3px rgba(36,73,255,.45),0 0 24px -4px rgba(36,73,255,.8)}
.form .field.err input{border-color:var(--orange-hot);box-shadow:0 0 0 3px rgba(255,90,31,.3)}
.form .msg{font-size:17px;font-weight:600;color:var(--orange-hot);display:none}
.form .field.err .msg{display:block}
.form .btn{grid-column:1/-1;width:100%;justify-content:center;height:60px;font-size:19px}
.form .note{grid-column:1/-1;font-size:17px;font-weight:500;color:var(--text);display:flex;gap:10px;align-items:flex-start;line-height:1.45}
.form .note b{display:block;color:#fff;font-size:17px;font-weight:500}
.form .deal{grid-column:1/-1;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px 16px;padding:10px 14px;border-radius:14px;background:linear-gradient(90deg,rgba(255,90,31,.16),rgba(36,73,255,.14));box-shadow:inset 0 1px 0 rgba(255,255,255,.22),0 0 0 1px rgba(255,150,110,.45);position:relative;overflow:hidden}
.form .deal::before{content:"";position:absolute;left:-40%;top:-60%;width:40%;height:220%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.18),transparent);transform:skewX(-18deg);animation:dealSweep 4.5s var(--ease) infinite}
@keyframes dealSweep{0%,55%{transform:skewX(-18deg) translateX(0)}85%,100%{transform:skewX(-18deg) translateX(420%)}}
.form .deal .was,.form .deal .now{display:grid;gap:2px;line-height:1.1}
.form .deal .was s{font-size:19px;font-weight:800;color:var(--text);text-decoration-color:var(--orange-hot);text-decoration-thickness:3px}
.form .deal .was span,.form .deal .now span{font-size:17px;font-weight:600;color:var(--text)}
.form .deal .now b{font-size:clamp(26px,2.4vw,32px);font-weight:900;letter-spacing:-.03em;color:#fff;text-shadow:0 0 18px rgba(255,138,92,.55)}
.form .deal .now b::before{content:"→ ";color:var(--orange-hot);font-weight:800;font-size:.6em;vertical-align:middle}
.form .deal .save{padding:7px 12px;border-radius:10px;background:linear-gradient(180deg,#ff8a5c,var(--orange));box-shadow:inset 0 1px 0 rgba(255,255,255,.5),0 0 18px -4px rgba(255,90,31,.95);color:#fff;font-weight:800;font-size:17px;white-space:nowrap;transform:rotate(-2deg)}
@media (min-width:1301px){
  .deck .steps button span{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
  .deck .steps button{position:relative;gap:0}
  .deck .steps button i{width:48px;height:48px;border-radius:14px}
  .deck .steps button i svg{width:24px;height:24px}
  .deck .steps::before,.deck .steps::after{top:24px;left:24px}
  .deck .steps::before{right:24px}
  .deck .steps::after{width:calc((100% - 48px) * var(--prog,0))}
}
@media (min-width:1025px) and (max-width:1300px){
  .deck .steps{flex-wrap:wrap;gap:10px;justify-content:flex-start}
  .deck .steps::before,.deck .steps::after{display:none}
  .deck .steps li{flex:none;display:block;padding:0}
  .deck .steps button{display:inline-flex;align-items:center;gap:8px;padding:9px 14px 9px 10px;border-radius:10px;border:1px solid var(--edge);background:rgba(4,8,30,.4);min-height:44px;width:auto}
  .deck .steps button span{width:auto;white-space:nowrap}
  .deck .steps button i{width:26px;height:26px;border-radius:8px}
  .deck .steps button i svg{width:16px;height:16px}
  .deck .steps button i::before{display:none}
  .deck .steps button:hover i,.deck .steps button[aria-pressed="true"] i{transform:none}
  .deck .steps button[aria-pressed="true"]{background:var(--orange);border-color:#ffb08a;color:#fff;box-shadow:0 0 18px -4px rgba(255,90,31,.9)}
  .deck .steps button[aria-pressed="true"] span{color:#fff}
}
@media (max-width:640px){.form .deal{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 14px}.form .deal .was,.form .deal .now{display:contents}.form .deal .was span,.form .deal .now span{display:none}.form .deal .now b{font-size:24px;order:1;white-space:nowrap}.form .deal .now b::before{display:none}.form .deal .now b::after{content:" / month";font-size:17px;font-weight:600;color:var(--text);letter-spacing:0;text-shadow:none}.form .deal .was s{font-size:17px;order:2;color:var(--text);white-space:nowrap}.form .deal .save{order:3;margin-left:auto;transform:none;padding:6px 10px;white-space:nowrap}}
.form .note svg{width:20px;height:20px;flex:none;margin-top:3px;stroke:#9db0ff}
.form.done{grid-template-columns:1fr;display:flex;align-items:center;gap:14px;font-weight:600;font-size:19px}
.form.done .check{width:36px;height:36px;border-radius:12px;background:var(--orange);box-shadow:0 0 24px -4px rgba(255,90,31,.9);display:grid;place-items:center;flex:none}
.form.done .check svg{width:18px;height:18px}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(170,195,255,.6)}100%{box-shadow:0 0 0 12px rgba(170,195,255,0)}}
.scroll-hint{position:absolute;left:50%;bottom:22px;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:8px;color:#fff;font-size:17px;font-weight:600;z-index:2}
.scroll-hint i{width:2px;height:40px;background:linear-gradient(#fff,transparent);display:block;animation:drop 1.8s infinite}
@keyframes drop{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* marquee */
.marquee{background:linear-gradient(180deg,rgba(28,46,130,.5),rgba(10,18,70,.5));color:#fff;padding:22px 0;overflow:hidden;position:relative;border-top:1px solid var(--edge);border-bottom:1px solid var(--edge);box-shadow:inset 0 1px 0 var(--edge-hi)}
.marquee .track{display:flex;gap:0;width:max-content;animation:marquee 40s linear infinite}
.marquee:hover .track{animation-play-state:paused}
.marquee .item{display:flex;align-items:center;gap:28px;padding-right:28px;font-weight:700;font-size:clamp(19px,1.6vw,24px);white-space:nowrap;letter-spacing:-.01em}
.marquee .item i{width:10px;height:10px;background:#fff;border-radius:50%;display:block;box-shadow:0 0 10px rgba(160,185,255,.9)}
@keyframes marquee{to{transform:translateX(-50%)}}

/* sections */
.section{padding:clamp(88px,10vw,150px) 0}
.sec-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px 64px;align-items:end;margin-bottom:clamp(44px,5vw,76px)}
.sec-head .lead{color:var(--text)}
.ground .sec-head .lead{color:var(--text)}
.section{background:var(--bg)}

/* three courses, one route */
.courses .grid{display:grid;grid-template-columns:minmax(0,.42fr) minmax(0,.58fr);gap:clamp(32px,5vw,80px);align-items:start}
.courses .side{position:sticky;top:110px}
.courses .side .lead{color:var(--text);margin-top:18px}
.picker{margin-top:30px;padding:22px;border-radius:20px;background:var(--glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--edge);box-shadow:inset 0 1px 0 var(--edge-hi),0 30px 60px -40px rgba(0,0,0,.9);position:relative;overflow:hidden}
.picker::before{content:"";position:absolute;left:10%;right:10%;top:0;height:1px;background:linear-gradient(90deg,transparent,#fff,transparent);filter:drop-shadow(0 0 8px rgba(190,205,255,1))}
.picker b{color:#fff}
.picker .res{display:grid;grid-template-rows:0fr;transition:grid-template-rows .5s var(--ease),margin .5s var(--ease);font-size:17px;font-weight:600;color:var(--text)}
.picker .res > span{overflow:hidden;display:flex;gap:10px;align-items:flex-start;line-height:1.45}
.picker .res > span::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--orange);box-shadow:0 0 10px rgba(255,90,31,1);flex:none;margin-top:9px}
.courses[data-start] .picker .res{grid-template-rows:1fr;margin-top:14px}
.picker b{display:block;font-size:19px;margin-bottom:14px}
.picker .opts{display:grid;gap:10px}
.picker button{display:flex;align-items:center;gap:14px;text-align:left;padding:14px 18px;border-radius:12px;border:1px solid var(--edge);background:rgba(4,8,30,.45);color:#fff;font-weight:600;font-size:17px;cursor:pointer;transition:border-color .3s,background .3s,transform .4s var(--ease);min-height:56px}
.picker button:hover{border-color:rgba(190,205,255,.9);transform:translateX(4px);box-shadow:0 0 18px -6px rgba(36,73,255,.8)}
.picker button i{width:22px;height:22px;border-radius:50%;border:2px solid rgba(190,205,255,.6);flex:none;display:grid;place-items:center;transition:border-color .3s,background .3s}
.picker button i::after{content:"";width:10px;height:10px;border-radius:50%;background:#fff;transform:scale(0);transition:transform .35s var(--ease)}
.picker button[aria-pressed="true"]{border-color:rgba(190,205,255,.9);background:linear-gradient(180deg,rgba(36,73,255,.45),rgba(36,73,255,.2));box-shadow:inset 0 1px 0 var(--edge-hi),0 0 24px -8px rgba(36,73,255,.9)}
.picker button[aria-pressed="true"] i{border-color:#fff;background:var(--cobalt)}
.picker button[aria-pressed="true"] i::after{transform:scale(1)}
.route{margin-top:30px;display:grid;gap:6px}
.route a{display:grid;grid-template-columns:44px 1fr;gap:14px;align-items:center;padding:10px 12px 10px 8px;border-radius:14px;color:var(--text);font-weight:700;font-size:18px;position:relative;text-decoration:none;transition:background .35s,color .35s,box-shadow .35s}
.route a:hover{color:#fff;background:rgba(120,150,255,.08)}
.route a .node{width:44px;height:44px;border-radius:12px;border:1px solid var(--edge);background:rgba(4,8,30,.6);color:#fff;box-shadow:inset 0 1px 0 var(--edge-hi);display:grid;place-items:center;font-size:17px;font-weight:800;position:relative;z-index:1;transition:background .4s,border-color .4s,color .4s,transform .4s var(--ease),box-shadow .4s}
.route a::before{content:"";position:absolute;left:29px;top:56px;bottom:-8px;width:1px;background:var(--edge)}
.route a:last-child::before,.route a:last-child::after{display:none}
.route a::after{content:"";position:absolute;left:29px;top:56px;height:0;width:1px;background:#fff;box-shadow:0 0 8px rgba(160,185,255,.9);transition:height .6s var(--ease)}
.route a.done::after{height:calc(100% - 48px)}
.route a.done .node{background:var(--cobalt-deep);border-color:rgba(190,205,255,.8);box-shadow:inset 0 1px 0 rgba(255,255,255,.4),0 0 16px -4px rgba(36,73,255,.9)}
.route a.on{color:#fff;background:var(--glass);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge)}
.route a.on .node{background:var(--orange);border-color:#ffb08a;color:#fff;transform:scale(1.08);box-shadow:inset 0 1px 0 rgba(255,255,255,.5),0 0 22px -4px rgba(255,90,31,.9)}
.decks{position:relative}
.deck::before{content:attr(data-n);position:absolute;right:clamp(16px,2.6vw,36px);top:-.08em;font-size:clamp(140px,16vw,220px);font-weight:900;letter-spacing:-.06em;line-height:1;color:transparent;-webkit-text-stroke:1px rgba(170,195,255,.28);pointer-events:none;z-index:0;mask-image:linear-gradient(180deg,#000 20%,transparent 85%);-webkit-mask-image:linear-gradient(180deg,#000 20%,transparent 85%)}
.deck::after{content:"";position:absolute;left:8%;right:8%;top:0;height:1px;background:linear-gradient(90deg,transparent,#fff 30%,#fff 70%,transparent);filter:drop-shadow(0 0 8px rgba(190,205,255,1));pointer-events:none}
.deck > *{position:relative;z-index:1}
.deck .body .clip{box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge),0 40px 60px -36px rgba(0,0,0,.95),0 44px 50px -40px rgba(90,125,255,.55)}
.deck{position:sticky;top:var(--stick,92px);margin-bottom:clamp(28px,18vh,180px);border-radius:var(--radius);padding:clamp(26px,3.4vw,48px);overflow:hidden;backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge),0 50px 100px -40px rgba(0,0,0,.9);will-change:transform;transform-origin:top center;transition:filter .3s,box-shadow .5s}
.deck:nth-child(1){background:linear-gradient(180deg,rgba(22,36,110,.72),rgba(8,14,52,.9));color:#fff}
.deck:nth-child(2){background:linear-gradient(180deg,rgba(30,56,180,.66),rgba(10,20,80,.9));color:#fff}
.deck:nth-child(3){background:linear-gradient(180deg,rgba(70,52,190,.55),rgba(12,16,70,.92));color:#fff}
.deck.rec{box-shadow:inset 0 1px 0 rgba(255,255,255,.6),0 0 0 1px rgba(255,150,110,.9),0 0 40px -8px rgba(255,90,31,.7),0 50px 100px -40px rgba(0,0,0,.9)}
.deck .top{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:22px}
.deck .num{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;font-size:30px;font-weight:900;letter-spacing:-.04em;background:rgba(255,255,255,.08);color:#fff;box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge)}
.deck .tag{padding:10px 16px;border-radius:12px;font-weight:700;font-size:17px;white-space:nowrap;background:rgba(255,255,255,.08);border:1px solid var(--edge);box-shadow:inset 0 1px 0 rgba(255,255,255,.3);display:none;align-items:center;gap:8px;color:#fff}
.deck .tag::before{content:"";width:8px;height:8px;border-radius:50%;background:#fff;box-shadow:0 0 8px rgba(160,185,255,.9)}
.courses[data-start] .deck .tag{display:inline-flex}
.deck.rec .tag{background:var(--orange);border-color:#ffb08a;color:#fff;box-shadow:inset 0 1px 0 rgba(255,255,255,.5),0 0 20px -4px rgba(255,90,31,.9)}
.deck.rec .tag::before{background:#fff}
.deck h3{font-size:clamp(28px,3vw,42px);margin-bottom:16px;letter-spacing:-.02em}
.deck p.desc{font-size:clamp(18px,1.25vw,20px);line-height:1.6;max-width:66ch;color:var(--text)}
.deck .stepbar{margin:30px 0 8px;position:relative}
.deck .steps{display:flex;position:relative;list-style:none;justify-content:space-between}
.deck .steps::before{content:"";position:absolute;left:20px;right:20px;top:20px;height:1px;background:var(--edge)}
.deck .steps::after{content:"";position:absolute;left:20px;top:20px;height:1px;width:calc((100% - 40px) * var(--prog,0));background:#fff;box-shadow:0 0 10px rgba(190,205,255,1);transition:width .6s var(--ease)}
.deck .steps li{position:relative;flex:1 1 0;display:grid;justify-items:center;min-width:0;padding:0 3px}
.deck .steps button{display:grid;justify-items:center;gap:10px;background:transparent;border:0;color:inherit;cursor:pointer;font-weight:700;font-size:17px;padding:0;min-width:0;width:100%;max-width:100%}
.deck .steps button i{width:40px;height:40px;border-radius:12px;border:1px solid rgba(190,205,255,.7);box-shadow:inset 0 1px 0 rgba(255,255,255,.3);display:grid;place-items:center;transition:transform .45s var(--ease),border-color .3s,background .35s,box-shadow .35s;position:relative;z-index:1;background:#0a1240;color:#fff}
.deck .steps button i svg{width:22px;height:22px}
.deck .steps button i svg path{stroke-dasharray:1;stroke-dashoffset:0;opacity:.8;transition:opacity .3s}
.deck .steps button:hover i{transform:translateY(-3px) scale(1.06)}
.deck .steps button[aria-pressed="true"] i{background:linear-gradient(180deg,#ff8a5c,var(--orange));border-color:#ffb08a;box-shadow:inset 0 1px 0 rgba(255,255,255,.55),0 0 22px -2px rgba(255,90,31,.95);transform:translateY(-3px) scale(1.08)}
.deck .steps button[aria-pressed="true"] i svg path{opacity:1;animation:draw .9s var(--ease) both;animation-delay:calc(var(--k,0) * .12s)}
.deck .steps button i svg path:nth-child(2){--k:1}.deck .steps button i svg path:nth-child(3){--k:2}.deck .steps button i svg path:nth-child(4){--k:3}.deck .steps button i svg path:nth-child(5){--k:4}
.deck .steps button[aria-pressed="true"] i::before{content:"";position:absolute;inset:-5px;border-radius:16px;border:1px solid #ffb08a;opacity:0;animation:stepRing 1s var(--ease) both}
@keyframes stepRing{0%{opacity:.9;transform:scale(.8)}100%{opacity:0;transform:scale(1.35)}}
.deck .num{position:relative}
.deck .num .ring{position:absolute;inset:-5px;width:calc(100% + 10px);height:calc(100% + 10px);transform:rotate(-90deg);fill:none}
.deck .num .ring circle{stroke:rgba(190,205,255,.22);stroke-width:3}
.deck .num .ring .p{stroke:#fff;stroke-width:3;stroke-linecap:round;stroke-dasharray:var(--ring,.25) 1;filter:drop-shadow(0 0 6px rgba(190,205,255,1));transition:stroke-dasharray .7s var(--ease)}
.route a.on .node::before{content:"";position:absolute;inset:-4px;border-radius:15px;padding:1.5px;background:conic-gradient(from var(--ang),transparent 0 62%,#fff 84%,rgba(140,170,255,.9) 92%,transparent 100%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;animation:trace 2.2s linear infinite}
.picker button .pi{margin-left:auto;width:26px;height:26px;flex:none;color:var(--text)}
.picker button .pi path{stroke-dasharray:1;stroke-dashoffset:0}
.picker button[aria-pressed="true"] .pi{color:#fff}
.picker button[aria-pressed="true"] .pi path{animation:draw .9s var(--ease) both;animation-delay:calc(var(--k,0) * .15s)}
.picker button .pi path:nth-child(2){--k:1}.picker button .pi path:nth-child(3){--k:2}.picker button .pi path:nth-child(4){--k:3}
.deck .steps button span{display:block;width:100%;white-space:normal;text-align:center;line-height:1.2;color:var(--text);overflow-wrap:anywhere;hyphens:auto}
.deck .steps button[aria-pressed="true"] span{color:#fff}
.deck .stepinfo{margin-top:18px;padding:16px 20px;border-radius:14px;background:rgba(4,8,30,.45);border:1px solid var(--edge);box-shadow:inset 0 1px 0 rgba(255,255,255,.18);font-size:18px;line-height:1.5;font-weight:500;min-height:76px;display:grid;grid-template-columns:1fr;align-items:start;justify-items:start;gap:8px;color:var(--text)}
.deck .stepinfo b{color:#fff;white-space:nowrap;font-size:17px;padding:8px 14px;border-radius:10px;background:linear-gradient(180deg,#ff8a5c,var(--orange));box-shadow:inset 0 1px 0 rgba(255,255,255,.5),0 0 14px -4px rgba(255,90,31,.9)}
.deck .stepinfo span{transition:opacity .3s}
.deck .stepinfo.swap span,.deck .stepinfo.swap b{opacity:0}
.deck .side{display:flex;flex-direction:column;gap:14px;min-width:0}
.deck .meta{display:grid;gap:8px;font-size:17px;font-weight:600;color:var(--text)}
.deck .meta .m{display:grid;grid-template-columns:34px 1fr;gap:10px;align-items:center;padding:10px 12px;border-radius:12px;background:rgba(4,8,30,.45);box-shadow:inset 0 1px 0 rgba(255,255,255,.14),0 0 0 1px var(--edge);line-height:1.35}
.deck .meta .m i{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;color:#fff;background:linear-gradient(180deg,rgba(60,95,255,.5),rgba(26,51,214,.55));box-shadow:inset 0 1px 0 rgba(255,255,255,.4)}
.deck .meta .m i svg{width:18px;height:18px}
.deck .meta .m:first-child i{background:linear-gradient(180deg,#ff8a5c,var(--orange));box-shadow:inset 0 1px 0 rgba(255,255,255,.5),0 0 14px -4px rgba(255,90,31,.9)}

/* why section */
@property --p{syntax:"<percentage>";inherits:true;initial-value:50%}
.why{background:linear-gradient(180deg,var(--bg) 0%,var(--bg3) 50%,var(--bg) 100%)}
.why .head{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(28px,5vw,80px);align-items:start;margin-bottom:clamp(44px,5vw,72px)}
.why .rv{font-size:clamp(22px,2.2vw,32px);line-height:1.4;font-weight:600;letter-spacing:-.01em;text-wrap:pretty}
.why .rv .w{color:#6f7fc9;transition:color .35s}
.why .rv .w.on{color:#fff}
.why .rv .w.k{font-weight:800}
.why .rv .w.k.on{color:#fff;text-shadow:0 0 18px rgba(160,185,255,.75)}
.lab{border-radius:var(--radius);background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge),0 50px 100px -40px rgba(0,0,0,.9);overflow:hidden;position:relative}
.lab::before{content:"";position:absolute;left:8%;right:8%;top:0;height:1px;background:linear-gradient(90deg,transparent,#fff 30%,#fff 70%,transparent);filter:drop-shadow(0 0 8px rgba(190,205,255,1));z-index:2;pointer-events:none}
.lab .bar{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px;align-items:center;padding:18px 22px;border-bottom:1px solid var(--edge)}
.lab .prompt{display:flex;align-items:center;gap:14px;min-width:0;font-size:18px;font-weight:600;color:#fff;padding:8px 16px 8px 8px;border-radius:14px;background:rgba(4,8,30,.55);box-shadow:inset 0 1px 0 rgba(255,255,255,.14),0 0 0 1px var(--edge);min-height:56px}
.lab .prompt .pi{width:40px;height:40px;border-radius:12px;background:var(--cobalt-deep);box-shadow:inset 0 1px 0 rgba(255,255,255,.4),0 0 18px -4px rgba(36,73,255,.9);display:grid;place-items:center;flex:none}
.lab .prompt .pi svg{width:20px;height:20px}
.lab .prompt span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lab .prompt .cur{display:inline-block;width:2px;height:1.1em;background:#fff;box-shadow:0 0 8px rgba(160,185,255,.9);margin-left:2px;vertical-align:-3px;animation:blink 1s steps(2) infinite}
@keyframes blink{to{opacity:0}}
.switch{display:inline-flex;align-items:center;gap:12px;border:0;background:rgba(4,8,30,.4);box-shadow:inset 0 1px 0 rgba(255,255,255,.14),0 0 0 1px var(--edge);border-radius:14px;cursor:pointer;font-weight:700;font-size:17px;color:#fff;padding:6px 18px 6px 8px;min-height:56px;white-space:nowrap;transition:box-shadow .4s,background .4s}
.switch:hover{background:rgba(36,73,255,.18);box-shadow:inset 0 1px 0 rgba(255,255,255,.3),0 0 0 1px rgba(190,205,255,.8),0 0 20px -6px rgba(36,73,255,.9)}
.switch[aria-checked="true"]{box-shadow:inset 0 1px 0 rgba(255,255,255,.3),0 0 0 1px rgba(255,150,110,.8),0 0 24px -6px rgba(255,90,31,.8)}
.switch .tr{width:58px;height:32px;border-radius:999px;background:rgba(4,8,30,.6);box-shadow:inset 0 0 0 1px var(--edge);position:relative;transition:background .4s,box-shadow .4s;flex:none}
.switch .tr::after{content:"";position:absolute;top:3px;left:3px;width:26px;height:26px;border-radius:50%;background:#fff;box-shadow:0 2px 6px rgba(0,0,0,.25);transition:transform .45s var(--ease)}
.switch[aria-checked="true"] .tr{background:var(--orange);box-shadow:inset 0 0 0 1px #ffb08a,0 0 18px -2px rgba(255,90,31,.9)}
.switch[aria-checked="true"] .tr::after{transform:translateX(26px)}
.lab .feed{display:flex;flex-wrap:wrap;gap:8px;padding:0 22px;max-height:0;overflow:hidden;transition:max-height .6s var(--ease),padding .6s var(--ease)}
.lab.on .feed{max-height:160px;padding:14px 22px 10px}
.lab .signal{height:1px;margin:0 22px;background:var(--edge);position:relative;overflow:hidden;opacity:0;transition:opacity .4s}
.lab.on .signal{opacity:1}
.lab .signal i{position:absolute;top:0;bottom:0;width:22%;background:linear-gradient(90deg,transparent,#fff,transparent);box-shadow:0 0 10px rgba(190,205,255,1);transform:translateX(-100%)}
.lab.on .signal i{animation:travel 2.2s linear infinite}
@keyframes travel{to{transform:translateX(560%)}}
.lab .signal+.cmpwrap{margin-top:14px}
.lab:not(.on) .signal+.cmpwrap{margin-top:0}
.lab .feed span{padding:8px 14px;border-radius:10px;background:rgba(36,73,255,.22);box-shadow:inset 0 1px 0 rgba(255,255,255,.3),0 0 0 1px var(--edge);color:#fff;font-weight:700;font-size:17px;display:inline-flex;align-items:center;gap:8px;transform:translateY(8px);opacity:0;transition:transform .5s var(--ease),opacity .5s}
.lab.on .feed span{transform:none;opacity:1}
.lab.on .feed span:nth-child(2){transition-delay:.08s}.lab.on .feed span:nth-child(3){transition-delay:.16s}.lab.on .feed span:nth-child(4){transition-delay:.24s}
.lab .feed span::before{content:"";width:8px;height:8px;border-radius:50%;background:#fff;box-shadow:0 0 8px rgba(160,185,255,.9)}
.cmpwrap{position:relative;aspect-ratio:16/9;--p:50%;background:#070d33;user-select:none;-webkit-user-select:none}
.cmpwrap.anim{transition:--p .8s var(--ease)}
.cmpwrap .layer{position:absolute;inset:0}
.cmpwrap .layer.b{clip-path:inset(0 0 0 var(--p))}
.cmpwrap .layer .ph{position:absolute;inset:0;display:grid;place-items:center;pointer-events:none}
.cmpwrap .scan{position:absolute;inset:0;pointer-events:none;z-index:2;overflow:hidden}
.cmpwrap .scan::after{content:"";position:absolute;top:0;bottom:0;width:120px;left:-120px;background:linear-gradient(90deg,transparent,rgba(190,205,255,.35) 50%,transparent);box-shadow:0 0 30px rgba(190,205,255,.4)}
.cmpwrap.sweep .scan::after{animation:scan .9s var(--ease) forwards}
@keyframes scan{to{left:100%}}
.cmpwrap .layer.a::after,.cmpwrap .layer.b::after{content:"";position:absolute;inset:auto 0 0;height:1px;background:linear-gradient(90deg,transparent,rgba(190,205,255,.7),transparent)}
.cmpwrap .layer.b::after{background:linear-gradient(90deg,transparent,var(--orange),transparent);box-shadow:0 0 12px rgba(255,90,31,.9)}
.cmpwrap .handle{position:absolute;top:0;bottom:0;left:var(--p);width:2px;background:#fff;transform:translateX(-50%);pointer-events:none;box-shadow:0 0 14px rgba(160,185,255,.95)}
.cmpwrap .handle i{position:absolute;top:50%;left:50%;width:56px;height:56px;border-radius:50%;background:rgba(10,18,60,.75);backdrop-filter:blur(8px);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px rgba(190,205,255,.8),0 0 24px -4px rgba(160,185,255,.9)!important;transform:translate(-50%,-50%);display:grid;place-items:center;box-shadow:0 10px 30px -8px rgba(0,0,0,.5);transition:transform .3s var(--ease)}
.cmpwrap:hover .handle i,.cmpwrap:active .handle i{transform:translate(-50%,-50%) scale(1.1)}
.cmpwrap .handle svg{width:26px;height:26px;stroke:#fff}
.cmpwrap input[type=range]{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:ew-resize;-webkit-appearance:none;appearance:none;z-index:3}
.cmpwrap input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:80px;height:100%}
.cmpwrap .lbl{position:absolute;top:16px;padding:10px 16px;border-radius:10px;background:rgba(6,11,38,.75);backdrop-filter:blur(8px);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge);color:#fff;font-weight:700;font-size:17px;display:flex;align-items:center;gap:10px;pointer-events:none;z-index:2;box-shadow:0 8px 24px -10px rgba(0,0,0,.4);transition:opacity .3s}
.cmpwrap .lbl.a{left:16px}.cmpwrap .lbl.b{right:16px}
.cmpwrap .lbl i{width:10px;height:10px;border-radius:50%;background:#8fa6ff}
.cmpwrap .lbl.b i{background:var(--orange)}
.why .after{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px 48px;align-items:center;margin-top:clamp(36px,4vw,56px)}
.why .after p{font-size:clamp(19px,1.4vw,22px);line-height:1.6;max-width:60ch}
.why .after p strong{color:#fff;text-shadow:0 0 18px rgba(160,185,255,.7)}
.why .after .clip{box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge),0 40px 80px -36px rgba(0,0,0,.95),0 50px 60px -44px rgba(90,125,255,.6)}

/* motion clips */
.clip{position:relative;margin:0;aspect-ratio:var(--ar,3/4);border-radius:22px;overflow:hidden;background:#04071a;box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge),0 40px 80px -36px rgba(0,0,0,.9);cursor:pointer;isolation:isolate}
.clip video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;transform:scale(1.015)}
.clip .replay{position:absolute;right:14px;bottom:14px;width:44px;height:44px;border-radius:50%;background:rgba(6,11,38,.75);backdrop-filter:blur(8px);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px rgba(190,205,255,.8);color:#fff;display:grid;place-items:center;opacity:0;transform:scale(.8);transition:opacity .3s,transform .4s var(--ease);pointer-events:none}
.clip .replay svg{width:22px;height:22px}
.clip.ended .replay{opacity:1;transform:none}
.clip:hover .replay{transform:scale(1.08)}
.clip.ended:hover .replay{opacity:1}
.why .after{grid-template-columns:minmax(0,1fr) auto;grid-template-areas:"clip text" "clip btn";align-items:center}
.why .after .clip{grid-area:clip;width:min(100%,560px);justify-self:start;--ar:16/9}
.why .after p{grid-area:text}.why .after .btn{grid-area:btn;justify-self:start}
.why .after{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr)}
.why .head{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr) auto}
.why .head .clip{width:clamp(150px,13vw,220px);align-self:start}
.deck .body{display:grid;grid-template-columns:minmax(0,1fr);gap:22px;align-items:start}
.deck .body > div:first-child{display:contents}
.deck .body .side{display:grid;grid-template-columns:clamp(150px,16vw,200px) minmax(0,1fr);gap:16px 22px;align-items:center}
.deck .body .side .meta{display:grid;gap:10px}
.deck .body p.desc{order:0}.deck .body .side{order:1}.deck .body .stepbar{order:2}
@media (min-width:1400px){.deck .body{grid-template-columns:minmax(0,1fr) 300px;gap:0 40px}.deck .body > div:first-child{display:block}.deck .body .side{grid-template-columns:1fr;grid-row:1/3}}
.deck .body .clip{border-radius:18px}
.deck .body .clip video{filter:saturate(1.05)}
.os .title{display:grid;grid-template-columns:minmax(0,1fr) clamp(110px,9vw,150px);gap:20px;align-items:center;margin-bottom:14px}
.os .title h2{margin-bottom:0}
.os .title .clip{border-radius:16px;box-shadow:0 20px 50px -24px rgba(0,0,0,.7)}
@media (prefers-reduced-motion:reduce){.clip .replay{display:none}.clip{cursor:default}}

/* why: the input pipeline lights up when the transcript is added */
.lab .feed{padding:0 22px}
.lab.on .feed{max-height:420px;padding:18px 22px 12px}
.flow{display:grid;grid-template-columns:1fr auto 1fr auto 1fr auto 1fr;align-items:center}
.flow .node{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:14px;background:rgba(4,8,30,.5);box-shadow:inset 0 1px 0 rgba(255,255,255,.18),0 0 0 1px var(--edge);min-width:0;opacity:0;transform:translateY(8px) scale(.96)}
.lab.on .flow .node{animation:nodeIn .7s var(--ease) forwards;animation-delay:calc(var(--d) * .14s + .1s)}
@keyframes nodeIn{to{opacity:1;transform:none}}
.flow .node i{width:40px;height:40px;border-radius:11px;flex:none;display:grid;place-items:center;color:#fff;background:linear-gradient(180deg,rgba(60,95,255,.55),rgba(26,51,214,.6));box-shadow:inset 0 1px 0 rgba(255,255,255,.45),0 0 18px -6px rgba(36,73,255,.9)}
.flow .node i svg{width:22px;height:22px}
.flow .node i svg path{stroke-dasharray:1;stroke-dashoffset:1}
.lab.on .flow .node i svg path{animation:draw 1s var(--ease) forwards;animation-delay:calc(var(--d) * .14s + .35s + var(--k,0) * .12s)}
.flow .node i svg path:nth-child(2){--k:1}.flow .node i svg path:nth-child(3){--k:2}.flow .node i svg path:nth-child(4){--k:3}
.flow .node span{font-size:17px;font-weight:700;color:#fff;line-height:1.3}
.flow .link{position:relative;width:clamp(22px,3.4vw,56px);height:1px;background:var(--edge);margin:0 6px;opacity:0}
.lab.on .flow .link{animation:nodeIn .5s var(--ease) forwards;animation-delay:calc(var(--d) * .14s + .2s)}
.flow .link b{position:absolute;top:50%;left:0;width:6px;height:6px;margin:-3px 0 0 -3px;border-radius:50%;background:#fff;box-shadow:0 0 10px 2px rgba(190,205,255,.9);opacity:0}
.lab.on .flow .link b{animation:dotRun 1.8s linear infinite;animation-delay:calc(var(--d) * .14s + .6s + var(--j,0) * .6s)}
.flow .link b:nth-child(2){--j:1}.flow .link b:nth-child(3){--j:2}
@keyframes dotRun{0%{opacity:0;transform:translateX(0)}15%{opacity:1}85%{opacity:1}100%{opacity:0;transform:translateX(var(--len,48px))}}
.flow .link{--len:clamp(22px,3.4vw,56px)}
.lab .prompt .att{display:inline-flex;align-items:center;gap:6px;margin-left:10px;padding:4px 10px 4px 8px;border-radius:8px;font-size:17px;font-style:normal;font-weight:700;color:#fff;background:linear-gradient(180deg,rgba(60,95,255,.5),rgba(26,51,214,.55));box-shadow:inset 0 1px 0 rgba(255,255,255,.4),0 0 0 1px rgba(170,195,255,.6);vertical-align:middle;max-width:0;opacity:0;overflow:hidden;white-space:nowrap;transform:translateX(-6px);transition:max-width .6s var(--ease),opacity .4s,transform .6s var(--ease),padding .4s}
.lab .prompt .att svg{width:16px;height:16px;flex:none}
.lab:not(.on) .prompt .att{padding-inline:0;margin-left:0}
.lab.on .prompt .att{max-width:200px;opacity:1;transform:none}
/* on screen: live waveform, viewfinder corners, glowing playhead */
.screen .chrome .wave{display:flex;align-items:center;gap:3px;height:22px;margin-left:12px}
.screen .chrome .wave i{width:3px;height:6px;border-radius:2px;background:#fff;box-shadow:0 0 6px rgba(190,205,255,.9);animation:waveBar 1.1s ease-in-out infinite alternate;animation-delay:calc(var(--i) * -.13s)}
@keyframes waveBar{from{height:4px;opacity:.55}to{height:18px;opacity:1}}
.stage .vf{position:absolute;inset:14px;pointer-events:none;z-index:2}
.stage .vf b{position:absolute;width:22px;height:22px;border:2px solid rgba(255,255,255,.85);filter:drop-shadow(0 0 6px rgba(190,205,255,.9));transition:transform .6s var(--ease)}
.stage .vf b:nth-child(1){left:0;top:0;border-right:0;border-bottom:0;border-radius:6px 0 0 0}
.stage .vf b:nth-child(2){right:0;top:0;border-left:0;border-bottom:0;border-radius:0 6px 0 0}
.stage .vf b:nth-child(3){left:0;bottom:0;border-right:0;border-top:0;border-radius:0 0 0 6px}
.stage .vf b:nth-child(4){right:0;bottom:0;border-left:0;border-top:0;border-radius:0 0 6px 0}
.stage.sweep .vf b:nth-child(1){animation:vf1 .7s var(--ease)}.stage.sweep .vf b:nth-child(2){animation:vf2 .7s var(--ease)}.stage.sweep .vf b:nth-child(3){animation:vf3 .7s var(--ease)}.stage.sweep .vf b:nth-child(4){animation:vf4 .7s var(--ease)}
@keyframes vf1{30%{transform:translate(-8px,-8px)}}@keyframes vf2{30%{transform:translate(8px,-8px)}}@keyframes vf3{30%{transform:translate(-8px,8px)}}@keyframes vf4{30%{transform:translate(8px,8px)}}
.stage .slide .cap{opacity:0;transition:opacity .2s}
.stage .slide.on .cap{animation:capIn .5s var(--ease) .5s both}
@keyframes capIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.scrub{position:relative}
.scrub .ph{position:absolute;top:50%;left:calc(18px + (100% - 36px) * var(--p,0));width:12px;height:12px;margin:-1px 0 0 -6px;border-radius:50%;background:#fff;box-shadow:0 0 0 3px rgba(6,11,38,.9),0 0 14px 3px rgba(190,205,255,.95);z-index:2;transition:left .15s linear;pointer-events:none}
.scrub .ph::after{content:"";position:absolute;inset:-6px;border-radius:50%;border:1px solid rgba(255,255,255,.8);animation:phRing 1.6s var(--ease) infinite}
@keyframes phRing{0%{opacity:.9;transform:scale(.6)}100%{opacity:0;transform:scale(1.6)}}
.chapters li.on .n::before{content:"";position:absolute;inset:-4px;border-radius:15px;padding:1.5px;background:conic-gradient(from var(--ang),transparent 0 62%,#fff 84%,rgba(140,170,255,.9) 92%,transparent 100%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;animation:trace 2.2s linear infinite}
.chapters .n{position:relative}
@media (max-width:1024px){.flow{grid-template-columns:1fr 1fr;gap:10px}.flow .link{display:none}}
@media (max-width:640px){.flow{grid-template-columns:1fr}.screen .chrome .wave{display:none}.lab .prompt .att{display:none}}
@media (prefers-reduced-motion:reduce){.screen .chrome .wave i,.scrub .ph::after,.flow .link b,.chapters li.on .n::before{animation:none}.flow .node,.flow .link{opacity:1;transform:none}.flow .node i svg path{stroke-dashoffset:0}}

/* player scenes (transform/opacity only) */
.stage .sc{position:absolute;inset:0;width:100%;height:100%;z-index:0}
.stage .slide image-slot{position:relative;z-index:1}
.stage .slide image-slot:not([data-filled]){opacity:0}
.stage .slide image-slot[data-filled]{background:#070d33}
.stage .drop{position:absolute;right:14px;top:14px;z-index:3;padding:8px 12px;border-radius:10px;background:rgba(6,11,38,.8);backdrop-filter:blur(8px);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge);color:#fff;font-size:17px;font-weight:600;opacity:0;transform:translateY(-4px);transition:opacity .3s,transform .4s var(--ease);pointer-events:none}
.stage:hover .drop,.stage:focus-visible .drop{opacity:1;transform:none}
.stage:focus-visible{outline:2px solid #fff;outline-offset:-2px}
.sc [class]{transform-box:fill-box;transform-origin:center}
.slide:not(.on) .sc *{animation:none!important}
.off,.off *{animation-play-state:paused!important}
@keyframes inUp{0%{opacity:0;transform:translateY(8px)}100%{opacity:1;transform:none}}
.sc .d1,.sc .d2,.sc .d3,.sc .d4,.sc .d5,.sc .d6{opacity:0}
.slide.on .sc .d1{animation:inUp .6s var(--ease) .3s forwards}.slide.on .sc .d2{animation:inUp .6s var(--ease) .8s forwards}.slide.on .sc .d3{animation:inUp .6s var(--ease) 1.3s forwards}.slide.on .sc .d4{animation:inUp .6s var(--ease) 1.8s forwards}.slide.on .sc .d5{animation:inUp .6s var(--ease) 2.3s forwards}.slide.on .sc .d6{animation:inUp .6s var(--ease) 2.8s forwards}
/* 1 */
.slide.on .s1 .w{animation:s1w 1s ease-in-out infinite alternate;animation-delay:calc(var(--i) * -.11s)}
@keyframes s1w{from{transform:scaleY(.15)}to{transform:scaleY(1)}}
.s1 .fl{opacity:0}.slide.on .s1 .fl{animation:s1fl 1.6s linear infinite}.slide.on .s1 .f2{animation-delay:.8s}
@keyframes s1fl{0%{opacity:0;transform:translateX(0)}20%{opacity:1}80%{opacity:1}100%{opacity:0;transform:translateX(16px)}}
/* 2 */
.s2 .r{opacity:0}.s2 .win{opacity:0}
.slide.on .s2 .r0{animation:s2r0 6s var(--ease) infinite}@keyframes s2r0{0%{opacity:0;transform:translateY(-14px)}6%{opacity:0;transform:translateY(-14px)}12%{opacity:1;transform:translateY(0)}58%{transform:translateY(0)}72%,94%{opacity:1;transform:translateY(22px)}100%{opacity:0;transform:translateY(22px)}}.slide.on .s2 .r1{animation:s2r1 6s var(--ease) infinite}@keyframes s2r1{0%{opacity:0;transform:translateY(-14px)}11%{opacity:0;transform:translateY(-14px)}17%{opacity:1;transform:translateY(0)}58%{transform:translateY(0)}72%,94%{opacity:1;transform:translateY(22px)}100%{opacity:0;transform:translateY(22px)}}.slide.on .s2 .r2{animation:s2r2 6s var(--ease) infinite}@keyframes s2r2{0%{opacity:0;transform:translateY(-14px)}16%{opacity:0;transform:translateY(-14px)}22%{opacity:1;transform:translateY(0)}58%{transform:translateY(0)}72%,94%{opacity:1;transform:translateY(-44px)}100%{opacity:0;transform:translateY(-44px)}}.slide.on .s2 .r3{animation:s2r3 6s var(--ease) infinite}@keyframes s2r3{0%{opacity:0;transform:translateY(-14px)}21%{opacity:0;transform:translateY(-14px)}27%{opacity:1;transform:translateY(0)}58%{transform:translateY(0)}72%,94%{opacity:1;transform:translateY(0px)}100%{opacity:0;transform:translateY(0px)}}.slide.on .s2 .r4{animation:s2r4 6s var(--ease) infinite}@keyframes s2r4{0%{opacity:0;transform:translateY(-14px)}26%{opacity:0;transform:translateY(-14px)}32%{opacity:1;transform:translateY(0)}58%{transform:translateY(0)}72%,94%{opacity:1;transform:translateY(0px)}100%{opacity:0;transform:translateY(0px)}}.slide.on .s2 .r5{animation:s2r5 6s var(--ease) infinite}@keyframes s2r5{0%{opacity:0;transform:translateY(-14px)}31%{opacity:0;transform:translateY(-14px)}37%{opacity:1;transform:translateY(0)}58%{transform:translateY(0)}72%,94%{opacity:1;transform:translateY(0px)}100%{opacity:0;transform:translateY(0px)}}
.slide.on .s2 .r2 .win{animation:s2win 6s var(--ease) infinite}
@keyframes s2win{0%,68%{opacity:0}76%,94%{opacity:1}100%{opacity:0}}
/* 3 */
.s3 .rd,.s3 .pl{opacity:0}
.slide.on .s3 .r1{animation:s3a 6s var(--ease) infinite}.slide.on .s3 .r2{animation:s3b 6s var(--ease) infinite}.slide.on .s3 .r3{animation:s3c 6s var(--ease) infinite}
.slide.on .s3 .p1{animation:s3a 6s var(--ease) infinite}.slide.on .s3 .p2{animation:s3b 6s var(--ease) infinite}.slide.on .s3 .p3{animation:s3c 6s var(--ease) infinite}
@keyframes s3a{0%{opacity:0;transform:scale(.97)}6%,30%{opacity:1;transform:none}36%,100%{opacity:0;transform:scale(1.02)}}
@keyframes s3b{0%,32%{opacity:0;transform:scale(.97)}38%,62%{opacity:1;transform:none}68%,100%{opacity:0;transform:scale(1.02)}}
@keyframes s3c{0%,64%{opacity:0;transform:scale(.97)}70%,96%{opacity:1;transform:none}100%{opacity:0}}
/* 4 */
.s4 .f,.s4 .ph,.s4 .ok{opacity:0}
.slide.on .s4 .f.b1{animation:s4f 6s var(--ease) infinite}.slide.on .s4 .f.b2{animation:s4f 6s var(--ease) .5s infinite}.slide.on .s4 .f.b3{animation:s4f 6s var(--ease) 1s infinite}.slide.on .s4 .f.b4{animation:s4f 6s var(--ease) 1.5s infinite}
@keyframes s4f{0%,8%{opacity:0;transform:translateX(0)}14%{opacity:1;transform:translateX(0)}30%,92%{opacity:1;transform:translateX(152px)}100%{opacity:0;transform:translateX(152px)}}
.slide.on .s4 .ph{animation:s4ph 6s var(--ease) infinite}
@keyframes s4ph{0%,58%{opacity:0;transform:translateY(10px)}66%,94%{opacity:1;transform:none}100%{opacity:0}}
.slide.on .s4 .ok{animation:s4ok 6s cubic-bezier(.34,1.56,.64,1) infinite}
@keyframes s4ok{0%,74%{opacity:0;transform:scale(.4)}82%,94%{opacity:1;transform:scale(1)}100%{opacity:0}}
/* 5 */
.s5 .zz{opacity:0}.s5 .sg{opacity:0}
.slide.on .s5 .mv{animation:s5mv 6s var(--ease) infinite}
@keyframes s5mv{0%,10%{transform:translate(0,0)}24%,38%{transform:translate(72px,-32px)}52%,68%{transform:translate(144px,0)}82%,100%{transform:translate(216px,-32px)}}
.slide.on .s5 .mv .sg{animation:s5sg 6s var(--ease) infinite}
@keyframes s5sg{0%,84%{opacity:0}90%,100%{opacity:1}}
.slide.on .s5 .q{animation:s5q 6s var(--ease) infinite}
@keyframes s5q{0%,40%{opacity:1}56%,100%{opacity:.35}}
.slide.on .s5 .zz{animation:s5zz 2.4s ease-in-out infinite 3.2s}
@keyframes s5zz{0%{opacity:0;transform:translateY(4px)}30%,70%{opacity:1}100%{opacity:0;transform:translateY(-6px)}}
/* 6 */
.s6 .pr,.s6 .seal,.s6 .ring{opacity:0}
.slide.on .s6 .pr{animation:s4ok 6s cubic-bezier(.34,1.56,.64,1) infinite;animation-delay:-2.2s}
.slide.on .s6 .seal{animation:s6seal 6s cubic-bezier(.34,1.56,.64,1) infinite}
@keyframes s6seal{0%,60%{opacity:0;transform:scale(.3) rotate(-20deg)}70%,96%{opacity:1;transform:none}100%{opacity:0}}
.slide.on .s6 .ring{animation:s6ring 6s var(--ease) infinite}
@keyframes s6ring{0%,68%{opacity:0;transform:scale(.8)}72%{opacity:.9}86%,100%{opacity:0;transform:scale(2.2)}}
/* 7 */
.s7 .cover{transform-origin:right center}
.slide.on .s7 .cover{animation:s7cv 6s var(--ease) infinite}
@keyframes s7cv{0%,8%{transform:scaleX(1)}48%,100%{transform:scaleX(0)}}
.s7 .hb2,.s7 .up{opacity:0}
.slide.on .s7 .hb2{animation:s7hb 6s var(--ease) infinite}
@keyframes s7hb{0%,54%{opacity:0}62%,100%{opacity:1}}
.slide.on .s7 .up{animation:s7up 1.4s ease-in-out infinite 3.4s}
@keyframes s7up{0%{opacity:0;transform:translateY(6px)}30%,70%{opacity:1}100%{opacity:0;transform:translateY(-8px)}}
/* 8 */
.s8 .ch,.s8 .dot,.s8 .site{opacity:0}
.slide.on .s8 .c1{animation:s4ok 6s cubic-bezier(.34,1.56,.64,1) infinite;animation-delay:-2.8s}.slide.on .s8 .c2{animation:s4ok 6s cubic-bezier(.34,1.56,.64,1) infinite;animation-delay:-2.4s}.slide.on .s8 .c3{animation:s4ok 6s cubic-bezier(.34,1.56,.64,1) infinite;animation-delay:-2s}
.slide.on .s8 .dot{animation:s8dot 6s var(--ease) infinite}
@keyframes s8dot{0%,58%{opacity:0;transform:translateX(0)}62%{opacity:1}76%{opacity:1;transform:translateX(108px)}80%,100%{opacity:0;transform:translateX(108px)}}
.slide.on .s8 .site{animation:s8site 6s var(--ease) infinite}
@keyframes s8site{0%,72%{opacity:0;transform:scale(.9)}80%,96%{opacity:1;transform:none}100%{opacity:0}}
/* comparison mocks */
.cmpwrap .layer .cm{position:absolute;inset:0;width:100%;height:100%}
.cmpwrap .layer image-slot{position:relative;z-index:1}
.cmpwrap .layer image-slot:not([data-filled]){opacity:0}
.cmpwrap .cm [class]{transform-box:fill-box;transform-origin:center}
.cm.b .pw{animation:ringPhone 2.6s ease-in-out infinite}
@keyframes ringPhone{0%,60%,100%{transform:rotate(0)}64%{transform:rotate(-14deg)}68%{transform:rotate(12deg)}72%{transform:rotate(-10deg)}76%{transform:rotate(8deg)}80%{transform:rotate(0)}}
.cm.b .rp,.cm.b .rp2{opacity:0;animation:rpOp 2.6s ease-in-out infinite}.cm.b .rp2{animation-delay:.12s}
.cm.b .cta{animation:ctaPulse 2.6s ease-in-out infinite}
@keyframes ctaPulse{0%,55%,100%{transform:scale(1)}66%{transform:scale(1.06)}78%{transform:scale(1)}}
@keyframes rpOp{0%,60%{opacity:0;transform:scale(.8)}66%,82%{opacity:1;transform:scale(1)}90%,100%{opacity:0}}
.cm.b .stars path{opacity:0;animation:starIn 5s var(--ease) infinite;animation-delay:calc(var(--i) * .15s)}
@keyframes starIn{0%{opacity:0;transform:scale(.4)}8%,90%{opacity:1;transform:none}100%{opacity:0}}
.cm.b .ring{animation:ringGlow 2.6s ease-in-out infinite}
@keyframes ringGlow{0%,100%{opacity:0;transform:scale(1)}50%{opacity:1;transform:scale(1.06)}}
.cm.a .ghost{animation:ghost 3s ease-in-out infinite alternate}
@keyframes ghost{from{opacity:.6}to{opacity:1}}
@property --p{syntax:"<percentage>";inherits:true;initial-value:50%}
.cmpwrap.hint{animation:cmpHint 2.6s var(--ease) 1}
@keyframes cmpHint{0%{--p:50%}35%{--p:26%}70%{--p:74%}100%{--p:50%}}
/* chat: one message types at a time */
.msg.wait{opacity:0;transform:translateY(10px)}
.msg{transition:opacity .5s var(--ease),transform .6s var(--ease)}
.teacher .ph .name,.teacher .body{transition:transform .5s var(--ease)}
.teacher:hover .ph .name{transform:translate(calc(var(--mx,0) * 10px),calc(var(--my,0) * 8px))}
.teacher:hover .body{transform:translate(calc(var(--mx,0) * 5px),calc(var(--my,0) * 4px))}
.teacher:active{--ty:2px}
@media (prefers-reduced-motion:reduce){.sc *{animation:none!important;opacity:1!important;transform:none!important}.sc .fl,.sc .f,.s3 .r1,.s3 .r2,.s3 .p1,.s3 .p2,.s7 .cover,.s7 .up,.s8 .dot,.s2 .r0 .win,.s2 .r1 .win,.s2 .r3 .win,.s2 .r4 .win,.s2 .r5 .win{display:none}.cm *{animation:none!important;opacity:1!important}.cmpwrap.hint{animation:none}.msg.wait{opacity:1;transform:none}.route-line .fill{transition:none}}

/* on screen: autoplaying recording player */
.hscroll{position:relative}
.hscroll .pin{position:static;min-height:0;padding:clamp(88px,10vw,150px) 0;display:flex;align-items:center}
.os{display:grid;grid-template-columns:minmax(0,.42fr) minmax(0,.58fr);gap:clamp(32px,4vw,64px);align-items:center}
.os h2{color:#fff;margin-bottom:14px}
.os .lead{color:#fff;margin-bottom:30px}
.chapters{display:grid;gap:4px;list-style:none;position:relative}
.chapters::before{content:"";position:absolute;left:33px;top:28px;bottom:28px;width:1px;background:var(--edge);pointer-events:none}
.chapters li{border-radius:16px;position:relative}
.chapters button{width:100%;display:grid;grid-template-columns:40px 1fr;gap:14px;align-items:start;text-align:left;background:transparent;border:0;color:#fff;cursor:pointer;padding:12px 14px;border-radius:16px;transition:background .35s;min-height:56px}
.chapters button:hover{background:rgba(120,150,255,.08)}
.chapters .n{width:40px;height:40px;border-radius:12px;border:1px solid var(--edge);background:rgba(4,8,30,.5);box-shadow:inset 0 1px 0 var(--edge-hi);display:grid;place-items:center;font-weight:800;font-size:17px;transition:background .35s,border-color .35s,transform .35s var(--ease)}
.chapters .tx{min-width:0;padding-top:6px}
.chapters h3{font-size:clamp(19px,1.4vw,22px);line-height:1.25;color:#fff;letter-spacing:-.01em}
.chapters p{font-size:18px;line-height:1.5;color:var(--text);display:grid;grid-template-rows:0fr;overflow:hidden;transition:grid-template-rows .5s var(--ease),margin .5s var(--ease)}
.chapters p span{overflow:hidden;display:block}
.chapters li.on button{background:var(--glass);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge)}
.chapters li.done .n{background:var(--cobalt-deep);border-color:rgba(190,205,255,.8);box-shadow:inset 0 1px 0 rgba(255,255,255,.4),0 0 14px -4px rgba(36,73,255,.9)}
.chapters li.on .n{background:var(--orange);border-color:#ffb08a;box-shadow:inset 0 1px 0 rgba(255,255,255,.5),0 0 20px -4px rgba(255,90,31,.9);transform:scale(1.06)}
.chapters li.on p{grid-template-rows:1fr;margin-top:8px}
.screen{position:relative;padding-bottom:40px}
.screen::after{content:"";position:absolute;left:12%;right:12%;bottom:10px;height:1px;background:linear-gradient(90deg,transparent,rgba(175,195,255,.8),transparent);box-shadow:0 0 24px 2px rgba(90,125,255,.45)}
.screen .frame{position:relative;border-radius:22px;overflow:hidden;background:#04071a;box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge),0 60px 120px -40px rgba(0,0,0,.95)}
@media (min-width:1025px){.screen .frame{-webkit-box-reflect:below 6px linear-gradient(transparent 88%,rgba(0,0,0,.18))}}
.screen .frame::before{content:"";position:absolute;left:8%;right:8%;top:0;height:1px;background:linear-gradient(90deg,transparent,#fff 30%,#fff 70%,transparent);filter:drop-shadow(0 0 8px rgba(190,205,255,1));z-index:3;pointer-events:none}
.screen .chrome{display:flex;align-items:center;gap:10px;padding:14px 18px;background:rgba(16,28,86,.5);border-bottom:1px solid var(--edge)}
.screen .chrome i{width:12px;height:12px;border-radius:50%;background:rgba(190,205,255,.35);box-shadow:inset 0 1px 0 rgba(255,255,255,.3);display:block}
.screen .chrome i:first-child{background:#fff;box-shadow:0 0 8px rgba(160,185,255,.9)}
.screen .chrome .tc{margin-left:auto;font-size:17px;font-weight:700;color:#fff;font-variant-numeric:tabular-nums;padding:4px 10px;border-radius:8px;background:rgba(4,8,30,.55);box-shadow:inset 0 1px 0 rgba(255,255,255,.14),0 0 0 1px var(--edge)}
.screen .chrome .rec{display:flex;align-items:center;gap:8px;font-size:17px;font-weight:700;color:#fff}
.screen .chrome .rec::before{content:"";width:10px;height:10px;border-radius:50%;background:var(--orange);box-shadow:0 0 10px rgba(255,90,31,1);animation:pulse 2s infinite}
.stage{position:relative;aspect-ratio:16/10;background:#070d33;overflow:hidden;touch-action:pan-y}
.stage .slide{position:absolute;inset:0;opacity:0;transform:scale(1.04);transition:opacity .6s var(--ease),transform .9s var(--ease);pointer-events:none}
.stage .slide.on{opacity:1;transform:none;pointer-events:auto}
.stage .scan{position:absolute;inset:0;pointer-events:none;z-index:2;overflow:hidden}
.stage .scan::after{content:"";position:absolute;left:0;right:0;height:90px;top:-90px;background:linear-gradient(180deg,transparent,rgba(190,205,255,.28) 50%,transparent)}
.stage.sweep .scan::after{animation:vscan .8s var(--ease) forwards}
@keyframes vscan{to{top:100%}}
.stage::after{content:"";position:absolute;inset:0;pointer-events:none;background:repeating-linear-gradient(180deg,rgba(255,255,255,0) 0 3px,rgba(255,255,255,.025) 3px 4px);z-index:1}
.stage .cap{position:absolute;left:16px;bottom:16px;padding:10px 16px;border-radius:10px;background:rgba(6,11,38,.75);backdrop-filter:blur(8px);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge);color:#fff;font-weight:700;font-size:17px;pointer-events:none;z-index:2;box-shadow:0 8px 24px -10px rgba(0,0,0,.5)}
.scrub{display:flex;gap:5px;padding:16px 18px 6px;align-items:center;border-top:1px solid var(--edge);background:rgba(16,28,86,.3)}
.scrub button{flex:1;height:28px;border:0;background:transparent;padding:0;cursor:pointer;display:flex;align-items:center;position:relative}
.scrub button::before{content:"";position:absolute;left:0;right:0;height:5px;border-radius:5px;background:rgba(150,178,255,.22);transition:height .25s}
.scrub button:hover::before{height:9px}
.scrub button i{position:absolute;left:0;height:5px;border-radius:5px;background:#fff;box-shadow:0 0 10px rgba(190,205,255,.9);width:0;transition:width .15s linear,height .25s,background .3s}
.scrub button.cur i{background:var(--orange);box-shadow:0 0 12px rgba(255,90,31,1)}
.scrub button:hover i{height:9px}
.scrub button.done i{width:100%}
.screen .count{display:flex;justify-content:space-between;align-items:center;padding:0 18px 16px;font-size:17px;font-weight:600;color:var(--text);background:rgba(16,28,86,.3)}
.screen .count b{color:#fff}
.os-mobile{display:none}

/* teachers */
.teachers .grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr) minmax(0,1fr);gap:clamp(24px,3vw,44px);align-items:center}
.teachers .mid{text-align:center;display:flex;flex-direction:column;align-items:center}
.teachers .mid h2{margin-bottom:16px}
.teachers .mid .lead{color:var(--text);margin-bottom:34px}
.chat{display:grid;gap:14px;width:100%;max-width:480px;text-align:left;padding:20px;border-radius:22px;background:var(--glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge),0 40px 90px -40px rgba(0,0,0,.9);position:relative}
.chat::before{content:"";position:absolute;left:10%;right:10%;top:0;height:1px;background:linear-gradient(90deg,transparent,#fff 30%,#fff 70%,transparent);filter:drop-shadow(0 0 8px rgba(190,205,255,1))}
.chat .hd{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:17px;font-weight:700;color:#fff;padding-bottom:14px;border-bottom:1px solid var(--edge);flex-wrap:wrap}
.chat .hd .live{display:inline-flex;align-items:center;gap:8px;color:var(--text)}
.chat .hd .live i{width:8px;height:8px;border-radius:50%;background:#fff;box-shadow:0 0 10px rgba(190,205,255,1)}
.bub .dots{position:absolute;left:18px;top:50%;transform:translateY(-50%);display:none;gap:6px}
.bub .dots i{width:8px;height:8px;border-radius:50%;background:#fff;box-shadow:0 0 8px rgba(190,205,255,.9);animation:bounce 1s infinite}
.bub .dots i:nth-child(2){animation-delay:.15s}.bub .dots i:nth-child(3){animation-delay:.3s}
@keyframes bounce{0%,80%,100%{transform:translateY(0);opacity:.5}40%{transform:translateY(-5px);opacity:1}}
.msg.typing .bub{font-size:0;line-height:0;min-width:84px;min-height:50px;padding:0}
.msg.typing .bub .who{font-size:0;line-height:0;margin:0;height:0}
.msg.typing .bub .dots{display:flex;left:50%;transform:translate(-50%,-50%)}
.msg:not(.typing) .bub .dots{display:none}
.msg .av{transition:box-shadow .4s}
.teachers[data-focus="ferdy"] .msg.l .av,.teachers[data-focus="lars"] .msg.r .av{box-shadow:0 0 0 2px #fff,0 0 18px rgba(190,205,255,.9)}
.msg{display:flex;gap:12px;align-items:flex-end;max-width:92%}
.msg.r{margin-left:auto;flex-direction:row-reverse}
.msg .av{width:40px;height:40px;border-radius:50%;overflow:hidden;flex:none;border:1px solid rgba(190,205,255,.8);box-shadow:0 4px 12px -4px rgba(0,0,0,.4)}
.msg .av img{width:100%;height:100%;object-fit:cover}
.msg .bub{padding:14px 18px;border-radius:20px;font-size:18px;line-height:1.45;font-weight:600;position:relative;transition:transform .4s var(--ease),box-shadow .4s}
.msg.l .bub{background:var(--glass);backdrop-filter:blur(12px);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge);color:#fff;border-bottom-left-radius:6px}
.msg.r .bub{background:linear-gradient(180deg,rgba(50,86,255,.7),rgba(26,51,214,.75));box-shadow:inset 0 1px 0 rgba(255,255,255,.45),0 0 0 1px rgba(170,195,255,.5);color:#fff;border-bottom-right-radius:6px}
.msg .who{display:block;font-size:17px;font-weight:700;color:var(--blue);margin-bottom:4px}
.msg.r .who{color:#fff}
.teachers[data-focus="ferdy"] .msg.l .bub,.teachers[data-focus="lars"] .msg.r .bub{transform:scale(1.04);box-shadow:inset 0 1px 0 rgba(255,255,255,.6),0 0 0 1px rgba(190,205,255,.9),0 0 30px -6px rgba(36,73,255,.8)}
.teachers[data-focus="ferdy"] .msg.r,.teachers[data-focus="lars"] .msg.l{opacity:.55}
.msg{transition:opacity .5s var(--ease),transform .6s var(--ease)}
.chat .end{margin-top:6px;text-align:center;font-weight:700;font-size:18px;color:#fff;display:flex;align-items:center;justify-content:center;gap:10px}
.chat .end i{width:10px;height:10px;border-radius:50%;background:#fff;box-shadow:0 0 10px rgba(160,185,255,.9);animation:pulse 2s infinite}
.teacher{border-radius:var(--radius);overflow:hidden;background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge),0 40px 90px -40px rgba(0,0,0,.9);transform:perspective(1200px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg)) translateY(var(--ty,0px));transition:transform .5s var(--ease),box-shadow .5s var(--ease);position:relative}
.teacher::before{content:"";position:absolute;left:8%;right:8%;top:0;height:1px;background:linear-gradient(90deg,transparent,#fff 30%,#fff 70%,transparent);filter:drop-shadow(0 0 8px rgba(190,205,255,1));z-index:3}
.teachers .teacher.reveal.in{transform:perspective(1200px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg)) translateY(var(--ty,0px))}
.teacher:hover{--ty:-6px;box-shadow:inset 0 1px 0 rgba(255,255,255,.6),0 0 0 1px rgba(190,205,255,.85),0 0 40px -10px rgba(36,73,255,.7),0 50px 100px -40px rgba(0,0,0,.95)}
.teacher .ph::before{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;background:linear-gradient(105deg,transparent 40%,rgba(255,255,255,.14) 50%,transparent 60%);transform:translateX(-120%);transition:transform 1.1s var(--ease)}
.teacher:hover .ph::before{transform:translateX(120%)}
.teacher .ph{aspect-ratio:4/4.4;overflow:hidden;position:relative}
.teacher .ph img{position:absolute;left:0;top:-12%;width:100%;height:124%;object-fit:cover;object-position:center 20%;will-change:transform}
.teacher .ph::after{content:"";position:absolute;inset:auto 0 0;height:45%;background:linear-gradient(transparent,rgba(4,7,26,.75))}
.teacher .ph .name{position:absolute;left:16px;right:16px;bottom:16px;z-index:2;color:#fff;padding:14px 16px;border-radius:14px;background:rgba(4,8,30,.55);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge)}
.teacher .ph .name b{display:block;font-size:clamp(24px,2vw,30px);font-weight:800;letter-spacing:-.02em;line-height:1.1}
.teacher .ph .name span{display:block;font-size:17px;font-weight:600;margin-top:6px;color:#fff}
.teacher .body{padding:clamp(22px,2.4vw,32px)}
.teacher .role{color:var(--blue);font-weight:800;font-size:20px;margin-bottom:10px;line-height:1.3}
.teacher p{font-size:18px;line-height:1.6;color:var(--text)}
.teacher .proof{margin-top:20px;padding-top:18px;border-top:1px solid var(--edge);font-weight:700;font-size:17px;display:flex;gap:12px;align-items:center;line-height:1.3;color:#fff}
.teacher .proof b{font-size:32px;letter-spacing:-.03em;color:#fff;line-height:1;flex:none;text-shadow:0 0 18px rgba(160,185,255,.7)}
.teacher .links{display:flex;gap:10px;margin-top:auto;padding-top:16px;flex-wrap:wrap}
.teacher{display:flex;flex-direction:column}.teacher .body{flex:1;display:flex;flex-direction:column}
.teacher .links a{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:10px;border:1px solid var(--edge);background:rgba(4,8,30,.45);color:#fff;font-weight:700;font-size:17px;min-height:44px;transition:background .3s,border-color .3s,box-shadow .3s}
.teacher .links a:hover{background:var(--cobalt-deep);border-color:rgba(190,205,255,.9);color:#fff;box-shadow:0 0 18px -4px rgba(36,73,255,.9)}
.teacher .links a svg{width:16px;height:16px}

/* teachers: the two of them */
.together{position:relative;width:100%;max-width:560px;margin:-4px auto 26px;border-radius:22px;overflow:hidden;background:#070d33;box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge),0 40px 90px -40px rgba(0,0,0,.95)}
.together::before{content:"";position:absolute;left:10%;right:10%;top:0;height:1px;background:linear-gradient(90deg,transparent,#fff 30%,#fff 70%,transparent);filter:drop-shadow(0 0 8px rgba(190,205,255,1));z-index:2}
.together img{display:block;width:100%;aspect-ratio:16/8;object-fit:cover;object-position:center 30%;transition:transform 1.2s var(--ease)}
.together:hover img{transform:scale(1.04)}
.together figcaption{position:absolute;left:14px;bottom:14px;padding:8px 14px;border-radius:10px;background:rgba(6,11,38,.75);backdrop-filter:blur(8px);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge);color:#fff;font-size:17px;font-weight:700}
@media (max-width:640px){.together img{aspect-ratio:16/10}.together figcaption{left:10px;bottom:10px;font-size:17px}}

.duo{position:relative;display:grid;grid-template-columns:auto minmax(120px,220px) auto;align-items:end;gap:0;margin:-6px 0 22px}
.duo .orb{width:72px;height:72px;border-radius:50%;overflow:hidden;position:relative;box-shadow:0 0 0 2px rgba(190,205,255,.75),0 0 24px -4px rgba(90,125,255,.9);transition:transform .5s var(--ease),box-shadow .5s;background:#0a1240}
.duo .orb img{width:100%;height:100%;object-fit:cover}
.duo .orb::after{content:"";position:absolute;inset:-7px;border-radius:50%;padding:1.5px;background:conic-gradient(from var(--ang),transparent 0 70%,#fff 88%,transparent 100%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .3s}
.teachers[data-focus="ferdy"] .duo .orb.f,.teachers[data-focus="lars"] .duo .orb.l{transform:scale(1.1);box-shadow:0 0 0 2px #fff,0 0 34px -2px rgba(160,185,255,1)}
.teachers[data-focus="ferdy"] .duo .orb.f::after,.teachers[data-focus="lars"] .duo .orb.l::after{opacity:1;animation:trace 1.8s linear infinite}
.duo .arc{width:100%;height:auto;overflow:visible;margin-bottom:8px}
.duo .pulse{offset-path:path("M14 58C60 2 160 2 206 58");filter:drop-shadow(0 0 6px rgba(190,205,255,1));animation:duoRun 3.6s cubic-bezier(.45,0,.55,1) infinite}
.duo .p2{animation-direction:reverse;animation-delay:-1.8s}
.duo .p3{animation-duration:5.2s;animation-delay:-2.6s;opacity:.8}
@keyframes duoRun{0%{offset-distance:0%;opacity:0}8%{opacity:1}92%{opacity:1}100%{offset-distance:100%;opacity:0}}
.teacher::after{content:"";position:absolute;inset:0;border-radius:inherit;padding:1.5px;background:conic-gradient(from var(--ang),transparent 0 72%,#fff 88%,rgba(140,170,255,.9) 94%,transparent 100%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .35s;pointer-events:none;z-index:4}
.teacher:hover::after{opacity:1;animation:trace 2.4s linear infinite}
.msg .bub{position:relative;overflow:hidden}
.msg .bub::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,transparent 30%,rgba(255,255,255,.25) 50%,transparent 70%);transform:translateX(-130%)}
.msg:not(.typing) .bub::after{animation:sweep 1.1s var(--ease) .05s 1}
.msg.typing .av{box-shadow:0 0 0 2px #fff,0 0 16px rgba(190,205,255,.9);animation:pulse 1.2s infinite}
@media (max-width:640px){.duo{grid-template-columns:auto minmax(80px,1fr) auto}.duo .orb{width:56px;height:56px}}
@media (prefers-reduced-motion:reduce){.duo .pulse,.teacher:hover::after,.duo .orb::after{animation:none}}

/* includes: the kit */
.includes{background:linear-gradient(180deg,var(--bg) 0%,var(--bg3) 100%);color:#fff}
.includes .sec-head .lead{color:var(--text)}
.kit{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(28px,4vw,64px);align-items:start}
.kit-list{list-style:none;display:grid;gap:4px;border-top:1px solid var(--edge)}
.kit-list li{border-bottom:1px solid var(--edge)}
.kit-list button{width:100%;display:grid;grid-template-columns:44px 1fr auto;gap:16px;align-items:center;text-align:left;background:transparent;border:0;color:#fff;cursor:pointer;padding:16px 10px;min-height:64px;border-radius:14px;transition:background .3s,padding .4s var(--ease)}
.kit-list button:hover{background:rgba(120,150,255,.07)}
.kit-list .n{width:44px;height:44px;border-radius:12px;border:1px solid var(--edge);background:rgba(4,8,30,.5);box-shadow:inset 0 1px 0 var(--edge-hi);color:#fff;display:grid;place-items:center;font-weight:800;font-size:17px;transition:background .3s,color .3s}
.kit-list h3{font-size:clamp(20px,1.5vw,24px);line-height:1.2}
.kit-list .fmt{font-size:17px;font-weight:600;padding:6px 12px;border-radius:8px;border:1px solid var(--edge);color:var(--blue);white-space:nowrap}
.kit-list p{grid-column:2/-1;font-size:18px;line-height:1.5;color:var(--text);display:grid;grid-template-rows:0fr;overflow:hidden;transition:grid-template-rows .5s var(--ease),margin .5s var(--ease)}
.kit-list p span{overflow:hidden;display:block}
.kit-list li.on button{background:var(--glass);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge);padding-left:16px}
.kit-list li.on .n{background:var(--orange);border-color:#ffb08a;box-shadow:inset 0 1px 0 rgba(255,255,255,.5),0 0 20px -4px rgba(255,90,31,.9);color:#fff}
.kit-list li.on p{grid-template-rows:1fr;margin-top:8px}
.kit-view{position:sticky;top:110px;border-radius:var(--radius);background:var(--glass);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);color:#fff;overflow:hidden;box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge),0 60px 120px -40px rgba(0,0,0,.95)}
.kit-view .vh{display:flex;justify-content:space-between;align-items:center;padding:18px 24px;border-bottom:1px solid var(--edge);font-weight:700;font-size:18px}
.kit-view .vh span:last-child{color:var(--blue)}
.kit-view .vs{position:relative;aspect-ratio:4/3;background:linear-gradient(180deg,rgba(4,8,30,.4),rgba(4,8,30,.7))}
.kit-view .mock{position:absolute;inset:0;padding:clamp(20px,3vw,36px);opacity:0;transform:translateY(16px) scale(.98);transition:opacity .5s var(--ease),transform .6s var(--ease);pointer-events:none;display:flex;flex-direction:column;gap:12px}
.kit-view .mock.on{opacity:1;transform:none;pointer-events:auto}
.kit-view .prog{height:3px;background:rgba(150,178,255,.18)}
.kit-view .prog i{display:block;height:100%;background:var(--orange);transform:scaleX(0);transform-origin:left}
.kit-view.run .prog i{animation:fill 6s linear forwards}
.kit-view .vf{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 24px;font-size:17px;font-weight:600}
.kit-view .vf .arrows{display:flex;gap:8px}
.kit-view .vf .arrows button{width:44px;height:44px;border-radius:12px;border:1px solid var(--edge);background:rgba(4,8,30,.5);box-shadow:inset 0 1px 0 var(--edge-hi);color:#fff;cursor:pointer;display:grid;place-items:center;transition:background .3s,border-color .3s,box-shadow .3s}
.kit-view .vf .arrows button:hover{background:var(--cobalt-deep);border-color:rgba(190,205,255,.9);box-shadow:0 0 18px -4px rgba(36,73,255,.9)}
.kit-view .vf .arrows svg{width:20px;height:20px}
/* mock primitives */
.mk{background:linear-gradient(180deg,rgba(40,64,170,.45),rgba(14,24,86,.55));border-radius:14px;padding:16px;display:grid;gap:10px;box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge),0 20px 40px -24px rgba(0,0,0,.9)}
.mk .bar{height:10px;border-radius:6px;background:rgba(200,214,255,.55);box-shadow:0 0 10px rgba(160,185,255,.6)}
.mk .bar.d{background:#fff;height:12px;box-shadow:0 0 12px rgba(190,205,255,.9)}
.mk .bar.o{background:var(--orange);box-shadow:0 0 14px rgba(255,90,31,.9)}
.mk .bar.b{background:#9db0ff}
.mk .row{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center}
.mk .lbl{font-size:17px;font-weight:700;color:#fff}
.mk .pill{font-size:17px;font-weight:700;padding:4px 10px;border-radius:8px;background:rgba(4,8,30,.5);box-shadow:inset 0 1px 0 rgba(255,255,255,.25),0 0 0 1px var(--edge);color:#fff}
.mk .pill.o{background:var(--orange);color:#fff;box-shadow:inset 0 1px 0 rgba(255,255,255,.5),0 0 14px -2px rgba(255,90,31,.9)}
.mk .chk{width:22px;height:22px;border-radius:6px;border:1px solid var(--edge);background:rgba(4,8,30,.5);display:grid;place-items:center;flex:none}
.mk .chk.y{background:var(--cobalt-deep);border-color:rgba(190,205,255,.9);box-shadow:0 0 12px -2px rgba(36,73,255,.9)}
.mk .chk.y::after{content:"";width:10px;height:6px;border-left:2.5px solid #fff;border-bottom:2.5px solid #fff;transform:rotate(-45deg) translate(1px,-1px)}
.mk .line{display:flex;align-items:center;gap:12px}
.mk .line .bar{flex:1}
.mk .tabs{display:flex;gap:4px}
.mk .tabs span{padding:6px 12px;border-radius:8px 8px 0 0;background:rgba(4,8,30,.5);box-shadow:0 0 0 1px var(--edge);font-size:17px;font-weight:700;color:#fff}
.mk .tabs span.on{background:var(--cobalt-deep);box-shadow:inset 0 1px 0 rgba(255,255,255,.4),0 0 0 1px rgba(190,205,255,.8);color:#fff}
.mk .grid5{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.mk .grid5 div{aspect-ratio:1.4;border-radius:10px;background:rgba(4,8,30,.5);box-shadow:inset 0 1px 0 rgba(255,255,255,.25),0 0 0 1px var(--edge);display:grid;place-items:center;font-weight:800;font-size:17px;color:#fff}
.mk .grid5 div.o{background:var(--orange);color:#fff;box-shadow:inset 0 1px 0 rgba(255,255,255,.5),0 0 16px -2px rgba(255,90,31,.9)}
.mk .cells{display:grid;grid-template-columns:repeat(4,1fr);gap:4px}
.mk .cells i{height:18px;background:rgba(4,8,30,.35);border:1px solid rgba(150,178,255,.25);display:block}
.mk .cells i.h{background:rgba(150,178,255,.3)}
.mk .num{font-size:30px;font-weight:800;letter-spacing:-.03em;color:#fff;line-height:1}
.kit-cards{display:none}
.kit-nav{display:none}

/* kit: every preview builds itself when it comes on */
.kit-view .vs{background:linear-gradient(180deg,rgba(4,8,30,.4),rgba(4,8,30,.7)),repeating-linear-gradient(90deg,rgba(150,178,255,.08) 0 1px,transparent 1px 28px),repeating-linear-gradient(180deg,rgba(150,178,255,.08) 0 1px,transparent 1px 28px)}
.kit-view .vs::after{content:"";position:absolute;inset:0;background:radial-gradient(70% 60% at 50% 40%,transparent 40%,rgba(4,8,30,.7));pointer-events:none}
.kit-view .mock{z-index:1}
.mock .mk{position:relative;transform-origin:50% 100%}
.mock.on .mk{animation:mkIn .7s var(--ease) both}
.mock.on .mk + .mk{animation-delay:.25s}
@keyframes mkIn{from{opacity:0;transform:translateY(14px) scale(.96)}to{opacity:1;transform:none}}
.mock .bar{transform-origin:left center}
.mock.on .bar{animation:barGrow .7s var(--ease) both;animation-delay:calc(.25s + var(--n,0) * .09s)}
@keyframes barGrow{from{transform:scaleX(0);opacity:0}to{transform:scaleX(1);opacity:1}}
.mock .mk > :nth-child(1){--n:0}.mock .mk > :nth-child(2){--n:1}.mock .mk > :nth-child(3){--n:2}.mock .mk > :nth-child(4){--n:3}.mock .mk > :nth-child(5){--n:4}.mock .mk > :nth-child(6){--n:5}.mock .mk > :nth-child(7){--n:6}
.mock .mk .row .bar,.mock .mk .line .bar{--n:inherit}
.mock .row,.mock .line{opacity:0}
.mock.on .row,.mock.on .line{animation:rowIn .6s var(--ease) both;animation-delay:calc(.2s + var(--n,0) * .11s)}
@keyframes rowIn{from{opacity:0;transform:translateX(-8px)}to{opacity:1;transform:none}}
.mock .row .bar,.mock .line .bar{animation:none!important;transform:none;opacity:1}
.mock .chk.y::after{transform:rotate(-45deg) translate(1px,-1px) scale(0)}
.mock.on .chk.y::after{animation:chkPop .5s var(--ease) both;animation-delay:calc(.5s + var(--n,0) * .14s)}
@keyframes chkPop{to{transform:rotate(-45deg) translate(1px,-1px) scale(1)}}
.mock .pill.o{transform:scale(.6);opacity:0}
.mock.on .pill.o{animation:pillPop .6s cubic-bezier(.34,1.56,.64,1) both;animation-delay:calc(.6s + var(--n,0) * .12s)}
@keyframes pillPop{to{transform:scale(1);opacity:1}}
.mock .grid5 div{opacity:0;transform:scale(.8)}
.mock.on .grid5 div{animation:pillPop .55s cubic-bezier(.34,1.56,.64,1) both;animation-delay:calc(.3s + var(--g,0) * .09s)}
.mock .grid5 div:nth-child(1){--g:0}.mock .grid5 div:nth-child(2){--g:1}.mock .grid5 div:nth-child(3){--g:2}.mock .grid5 div:nth-child(4){--g:3}.mock .grid5 div:nth-child(5){--g:4}.mock .grid5 div:nth-child(6){--g:5}
.mock .cells i{opacity:0}
.mock.on .cells i{animation:rowIn .4s var(--ease) both;animation-delay:calc(.4s + var(--c,0) * .05s)}
.mock .cells i:nth-child(1){--c:0}.mock .cells i:nth-child(2){--c:1}.mock .cells i:nth-child(3){--c:2}.mock .cells i:nth-child(4){--c:3}.mock .cells i:nth-child(5){--c:4}.mock .cells i:nth-child(6){--c:5}.mock .cells i:nth-child(7){--c:6}.mock .cells i:nth-child(8){--c:7}.mock .cells i:nth-child(9){--c:8}.mock .cells i:nth-child(10){--c:9}.mock .cells i:nth-child(11){--c:10}.mock .cells i:nth-child(12){--c:11}.mock .cells i:nth-child(13){--c:12}.mock .cells i:nth-child(14){--c:13}.mock .cells i:nth-child(15){--c:14}.mock .cells i:nth-child(16){--c:15}
.mock .tabs span{opacity:0}
.mock.on .tabs span{animation:rowIn .5s var(--ease) both;animation-delay:calc(.15s + var(--t,0) * .08s)}
.mock .tabs span:nth-child(2){--t:1}.mock .tabs span:nth-child(3){--t:2}.mock .tabs span:nth-child(4){--t:3}
.kit-view .tray{display:flex;gap:4px;align-items:center;margin-left:auto;margin-right:14px}
.kit-view .tray i{width:14px;height:18px;border-radius:3px;border:1px solid var(--edge);background:rgba(4,8,30,.5);display:block;position:relative;transition:background .4s,border-color .4s,box-shadow .4s,transform .5s var(--ease)}
.kit-view .tray i::before{content:"";position:absolute;right:-1px;top:-1px;width:5px;height:5px;background:var(--bg3);border-left:1px solid var(--edge);border-bottom:1px solid var(--edge);border-radius:0 0 0 2px}
.kit-view .tray i.got{background:linear-gradient(180deg,rgba(60,95,255,.6),rgba(26,51,214,.65));border-color:rgba(190,205,255,.85);box-shadow:0 0 10px -2px rgba(36,73,255,.9);transform:translateY(-2px)}
.kit-list li.on .n{position:relative}
.kit-list li.on .n::before{content:"";position:absolute;inset:-4px;border-radius:15px;padding:1.5px;background:conic-gradient(from var(--ang),transparent 0 62%,#fff 84%,rgba(140,170,255,.9) 92%,transparent 100%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;animation:trace 2.2s linear infinite}
@media (max-width:1024px){.kit-view .tray{display:none}}
@media (prefers-reduced-motion:reduce){.mock .mk,.mock .bar,.mock .row,.mock .line,.mock .pill.o,.mock .grid5 div,.mock .cells i,.mock .tabs span{animation:none!important;opacity:1;transform:none}.mock .chk.y::after{transform:rotate(-45deg) translate(1px,-1px) scale(1)}.kit-list li.on .n::before{animation:none}}

/* AI search */
.aisearch .cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.col{border-radius:var(--radius);padding:clamp(26px,3vw,40px);background:var(--glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge),0 40px 80px -40px rgba(0,0,0,.9);display:flex;flex-direction:column;transition:transform .5s var(--ease),box-shadow .5s}
.col:hover{transform:translateY(-6px);box-shadow:inset 0 1px 0 rgba(255,255,255,.6),0 0 0 1px rgba(190,205,255,.85),0 0 40px -10px rgba(36,73,255,.7),0 50px 100px -40px rgba(0,0,0,.95)}
.col .lvl{display:inline-flex;align-items:center;gap:12px;font-weight:800;font-size:clamp(28px,2.6vw,36px);margin-bottom:8px;letter-spacing:-.02em}
.col .lvl i{width:14px;height:14px;border-radius:50%;display:block}
.col:nth-child(1) .lvl i{background:#9db0ff;box-shadow:0 0 12px rgba(160,185,255,.9)}
.col:nth-child(2) .lvl i{background:#fff;box-shadow:0 0 12px rgba(190,205,255,.95)}
.col:nth-child(3) .lvl i{background:var(--orange);box-shadow:0 0 14px rgba(255,90,31,.95)}
.col .sub{font-size:19px;color:#fff;font-weight:700;margin-bottom:22px}
.col li{color:var(--text)}
.col ul{list-style:none;display:grid;gap:12px;margin-bottom:24px}
.col li{display:flex;gap:12px;font-size:18px;line-height:1.45;font-weight:600}
.col li::before{content:"";width:8px;height:8px;border-radius:50%;background:#fff;box-shadow:0 0 8px rgba(160,185,255,.9);flex:none;margin-top:10px}
.col p{margin-top:auto;font-size:18px;line-height:1.55;padding-top:20px;border-top:1px solid var(--edge);color:var(--text)}

/* FAQ */
.faq .grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(32px,5vw,80px);align-items:start}
.faq .side{position:sticky;top:110px}
.faq .side p{margin-top:18px;color:var(--text);font-size:19px}
.faq .side .btn{margin-top:26px}
details{border-top:1px solid var(--edge)}
details:last-child{border-bottom:1px solid var(--edge)}
summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:24px;padding:26px 0;font-weight:700;font-size:clamp(20px,1.6vw,24px);letter-spacing:-.01em;line-height:1.3;transition:color .3s}
summary::-webkit-details-marker{display:none}
summary:hover{color:var(--blue)}
summary .pm{width:44px;height:44px;border-radius:12px;border:1px solid var(--edge);background:rgba(4,8,30,.5);box-shadow:inset 0 1px 0 var(--edge-hi);color:#fff;display:grid;place-items:center;flex:none;transition:transform .5s var(--ease),background .3s,border-color .3s}
summary .pm::before,summary .pm::after{content:"";position:absolute;width:16px;height:2.5px;background:currentColor;border-radius:2px;transition:transform .5s var(--ease)}
summary .pm::after{transform:rotate(90deg)}
summary .pm{position:relative}
details[open] summary{color:#fff}
details[open] summary .pm{transform:rotate(180deg);background:var(--orange);border-color:#ffb08a;color:#fff;box-shadow:inset 0 1px 0 rgba(255,255,255,.5),0 0 20px -4px rgba(255,90,31,.9)}
details[open] summary .pm::after{transform:rotate(0)}
.ans{display:grid;grid-template-rows:0fr;transition:grid-template-rows .5s var(--ease)}
details[open] .ans{grid-template-rows:1fr}
.ans > div{overflow:hidden}
.ans p{padding:0 72px 28px 0;font-size:19px;line-height:1.65;color:var(--text)}

/* final cta */
.final{text-align:center;padding:clamp(100px,12vw,170px) 0 clamp(120px,14vh,180px)}
.final.ground{overflow:visible;isolation:auto}
.final h2{font-size:clamp(42px,6.5vw,92px);margin-bottom:22px}
.final h2 .serif{color:#fff}
.final .lead{margin:0 auto 40px;color:var(--text)}
.final.ground{background:linear-gradient(180deg,var(--bg) 0%,#081140 100%)}
.final .form{margin:0 auto;position:relative}
.final h2 .serif{text-shadow:0 0 24px rgba(160,185,255,.75)}
/* the doors: a pinned doorway. You scroll, the doors swing open, the title and countdown are revealed, then the form follows */
.final{--open:0;padding-top:0}
.final.wide{--open:1!important}
.door-stage{position:relative;height:200vh;z-index:3}
.doorway{position:sticky;top:0;height:100svh;overflow:hidden;background:linear-gradient(180deg,#04071a,#070f3a)}
.doorway .behind{position:absolute;inset:0;display:flex;align-items:flex-start;justify-content:center;text-align:center;padding:clamp(96px,14vh,150px) 0 clamp(60px,9vh,90px);overflow:hidden;opacity:calc(.1 + .9 * var(--open));transform:translateY(calc((1 - var(--open)) * 40px)) scale(calc(.9 + .1 * var(--open)));z-index:1}
.doorway .behind .wrap{display:flex;flex-direction:column;align-items:center;width:100%;transform:translateY(calc(var(--lift,0) * -1px));will-change:transform}
.doorway .behind h2{font-size:clamp(36px,5vw,72px);margin-bottom:18px}
.doorway .joinbox{width:100%;max-width:720px;margin-top:34px;display:flex;flex-direction:column;align-items:center}
.doorway .joinbox .lead{margin:0 auto 26px;font-size:clamp(18px,1.3vw,20px)}
.doorway .joinbox .form{margin:0 auto}
.doorway .joinbox .next{margin-top:22px}
.doorway .behind h2{margin-bottom:28px}
.doorway .behind .countdown{margin:0}
.doorway .behind::before{content:"";position:absolute;left:50%;top:50%;width:min(90vw,1100px);height:min(70vh,700px);transform:translate(-50%,-50%);background:radial-gradient(50% 50% at 50% 50%,rgba(60,95,255,.35),transparent 70%);opacity:var(--open);pointer-events:none}
.final .gate{position:absolute;inset:0;z-index:3;pointer-events:none;perspective:2200px;perspective-origin:50% 50%}
.final .door{position:absolute;top:0;bottom:0;width:50.4%;background:linear-gradient(90deg,#16247a,#0b1552 55%,#0a1248);box-shadow:inset 0 1px 0 var(--edge-hi),inset 0 0 0 1px var(--edge),0 0 90px rgba(0,0,0,.7);backface-visibility:hidden;-webkit-backface-visibility:hidden;will-change:transform;transition:transform .08s linear}
.final .door::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(90deg,rgba(255,255,255,.025) 0 2px,transparent 2px 9px);opacity:.6}
.final .door .panel{position:absolute;inset:clamp(26px,9vh,90px) clamp(18px,8%,90px);border-radius:20px;border:1px solid rgba(190,205,255,.42);background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.015) 55%,rgba(255,255,255,.05));box-shadow:inset 0 1px 0 rgba(255,255,255,.25),inset 0 -1px 0 rgba(0,0,0,.5),0 0 0 8px rgba(4,8,30,.35)}
.final .door .panel::before{content:"";position:absolute;inset:14px;border-radius:14px;border:1px solid rgba(190,205,255,.18)}
.final .door .handle{position:absolute;top:50%;width:8px;height:clamp(72px,12vh,120px);margin-top:calc(clamp(72px,12vh,120px) / -2);border-radius:4px;background:linear-gradient(180deg,#fff,#9db0ff);box-shadow:0 0 18px rgba(190,205,255,1),0 0 0 4px rgba(4,8,30,.7)}
.final .door .handle::before,.final .door .handle::after{content:"";position:absolute;left:50%;width:18px;height:6px;margin-left:-9px;border-radius:3px;background:rgba(190,205,255,.8)}
.final .door .handle::before{top:-4px}.final .door .handle::after{bottom:-4px}
.final .door.l{left:0;transform-origin:left center;transform:rotateY(calc(var(--open) * -108deg));border-right:1px solid rgba(190,205,255,.6)}
.final .door.r{right:0;transform-origin:right center;transform:rotateY(calc(var(--open) * 108deg));border-left:1px solid rgba(190,205,255,.6)}
.final .door.l .handle{right:22px}.final .door.r .handle{left:22px}
.final .seam{position:absolute;left:50%;top:0;bottom:0;width:2px;margin-left:-1px;background:#fff;box-shadow:0 0 30px 8px rgba(190,205,255,.9),0 0 100px 36px rgba(90,125,255,.55);opacity:calc(1 - var(--open) * 1.8)}
.final .leak{position:absolute;left:50%;top:0;bottom:0;width:min(90vw,1100px);transform:translateX(-50%);background:radial-gradient(45% 60% at 50% 50%,rgba(150,178,255,.6),rgba(90,125,255,.2) 50%,transparent 75%);mix-blend-mode:screen;opacity:calc(var(--open) * (1 - var(--open)) * 4)}
.final .lintel{position:absolute;left:0;right:0;top:0;height:clamp(56px,9vh,84px);display:flex;align-items:center;justify-content:center;background:linear-gradient(180deg,#050a28,#070f3a);border-bottom:1px solid rgba(190,205,255,.6);box-shadow:0 20px 50px -20px rgba(0,0,0,.9);z-index:4}
.final .lintel span{font-size:17px;font-weight:700;color:#fff;padding:8px 16px;border-radius:999px;background:rgba(4,8,30,.6);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge);opacity:calc(1 - var(--open))}
.final .floor{position:absolute;left:0;right:0;bottom:0;height:clamp(28px,5vh,44px);background:linear-gradient(180deg,rgba(60,95,255,.18),#04071a);border-top:1px solid rgba(175,195,255,.6);box-shadow:0 -1px 30px -4px rgba(90,125,255,.6);z-index:4}
.final .hint{position:absolute;left:50%;bottom:clamp(52px,9vh,80px);transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:8px;color:#fff;font-size:17px;font-weight:700;z-index:5;opacity:calc(1 - var(--open) * 2.5);white-space:nowrap}
.final .hint i{width:2px;height:34px;background:linear-gradient(#fff,transparent);display:block;animation:drop 1.8s infinite}
.final{padding-bottom:0}
.final .lead{max-width:60ch}
@media (max-width:640px){.final .door .panel{inset:clamp(70px,12vh,110px) 14px;border-radius:16px}.final .door .handle{width:6px}.door-stage{height:150vh}.doorway .behind{padding:90px 0 80px}}
@media (prefers-reduced-motion:reduce){.final{--open:1}.door-stage{height:auto}.doorway{position:static;height:auto;padding:100px 0 60px}.final .gate{display:none}.doorway .behind{position:static;transform:none;opacity:1;overflow:visible}.doorway .behind .wrap{transform:none}}
@media (max-width:640px){.doorway .behind{padding-top:84px}.doorway .behind h2{font-size:34px}.doorway .joinbox{margin-top:24px}}
.final .next{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin:26px auto 0;max-width:720px;list-style:none}
.final .next li{display:inline-flex;align-items:center;gap:10px;padding:10px 16px;border-radius:12px;background:var(--glass);backdrop-filter:blur(10px);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge);font-size:17px;font-weight:700;color:#fff}
.final .next li i{width:8px;height:8px;border-radius:50%;background:#fff;box-shadow:0 0 10px rgba(190,205,255,1)}
.final .next li:first-child i{background:var(--orange);box-shadow:0 0 10px rgba(255,90,31,1)}
.final .fine{margin-top:22px;font-size:17px;color:var(--text);max-width:60ch;margin-inline:auto}
.final .wrap{position:relative;z-index:1}

/* FAQ: numbered glass rows, the bubble answers when a question opens */
.faq .qorb{position:relative;width:min(100%,190px);margin-bottom:18px}
.faq .qorb svg{width:100%;height:auto;overflow:visible;filter:drop-shadow(0 0 12px rgba(160,185,255,.45))}
.faq .qorb .bub{stroke-dasharray:1;stroke-dashoffset:1;fill:rgba(16,28,86,.45)}
.faq .qorb.in .bub{animation:draw 1.4s var(--ease) .2s forwards}
.faq .qorb .q{stroke-dasharray:1;stroke-dashoffset:1;transition:opacity .3s}
.faq .qorb.in .q{animation:draw .9s var(--ease) 1.1s forwards}
.faq .qorb .ok{stroke-dasharray:1;stroke-dashoffset:1;opacity:0}
.faq .qorb .ring{opacity:0;transform-box:fill-box;transform-origin:center;stroke:rgba(190,205,255,.9)}
.faq .qorb.hit .q{animation:qOut 1.6s var(--ease) forwards}
@keyframes qOut{0%{opacity:1}12%,78%{opacity:0}100%{opacity:1}}
.faq .qorb.in.hit .q{stroke-dashoffset:0}
.faq .qorb.hit .ok{animation:okIn 1.6s var(--ease) forwards}
.faq .qorb.hit .ring{animation:k2ring 1.2s var(--ease) forwards}
@keyframes okIn{0%{opacity:1;stroke-dashoffset:1}25%{stroke-dashoffset:0;opacity:1}80%{opacity:1;stroke-dashoffset:0}100%{opacity:0;stroke-dashoffset:0}}
.faq .qorb .blip{position:absolute;width:10px;height:10px;border-radius:50%;background:#fff;box-shadow:0 0 12px 3px rgba(190,205,255,.9);opacity:0}
.faq .qorb .b1{left:80%;top:8%;animation:blip 4s ease-in-out infinite}
.faq .qorb .b2{left:6%;top:70%;width:6px;height:6px;animation:blip 5.2s ease-in-out 1.6s infinite}
@keyframes blip{0%,100%{opacity:0;transform:translateY(6px) scale(.6)}30%,60%{opacity:1;transform:translateY(0) scale(1)}}
.faq .qa{counter-reset:q;display:grid;gap:8px}
.faq .qa details{border:0;border-radius:18px;background:rgba(4,8,30,.25);box-shadow:0 0 0 1px var(--edge);padding:0 22px;transition:background .5s,box-shadow .5s,transform .5s var(--ease)}
.faq .qa details:last-child{border:0}
.faq .qa details:hover{background:rgba(120,150,255,.07)}
.faq .qa details[open]{background:var(--glass);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px rgba(190,205,255,.7),0 30px 60px -40px rgba(0,0,0,.9);position:relative}
.faq .qa details[open]::before{content:"";position:absolute;left:0;top:18%;bottom:18%;width:2px;border-radius:2px;background:#fff;box-shadow:0 0 12px rgba(190,205,255,1);transform:scaleY(0);animation:lineGrow .6s var(--ease) .1s forwards}
@keyframes lineGrow{to{transform:scaleY(1)}}
.faq .qa summary{padding:22px 0;gap:18px}
.faq .qa summary::before{counter-increment:q;content:counter(q,decimal-leading-zero);flex:none;width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-size:17px;font-weight:800;color:#fff;background:rgba(4,8,30,.5);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge);transition:background .4s,box-shadow .4s,transform .5s var(--ease)}
.faq .qa summary > span.pm{margin-left:auto}
.faq .qa details[open] summary::before{background:linear-gradient(180deg,rgba(60,95,255,.6),rgba(26,51,214,.65));box-shadow:inset 0 1px 0 rgba(255,255,255,.45),0 0 0 1px rgba(190,205,255,.85),0 0 18px -4px rgba(36,73,255,.9);transform:rotate(-6deg) scale(1.06)}
.faq .qa summary:hover::before{transform:translateX(3px)}
.faq .qa .ans p{padding:0 72px 26px 62px}
.faq .qa details[open] .ans p{animation:ansIn .6s var(--ease) both}
@keyframes ansIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
/* final: steps as a lit route, the doors swing wide once you join */
.final .next{gap:0;align-items:center;max-width:none;position:relative;z-index:2}
.countdown{display:inline-flex;align-items:center;margin:-8px auto 36px;padding:12px 18px;border-radius:20px;background:var(--glass);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge),0 30px 60px -40px rgba(0,0,0,.9);position:relative;flex-wrap:wrap;justify-content:center;z-index:2}
.countdown::before{content:"";position:absolute;left:12%;right:12%;top:0;height:1px;background:linear-gradient(90deg,transparent,#fff,transparent);filter:drop-shadow(0 0 8px rgba(190,205,255,1))}
.countdown > div{display:grid;justify-items:center;gap:2px;min-width:92px;padding:6px 10px}
.countdown b{font-size:clamp(34px,4vw,52px);font-weight:800;letter-spacing:-.03em;line-height:1;color:#fff;font-variant-numeric:tabular-nums;text-shadow:0 0 18px rgba(160,185,255,.6)}
.countdown span{font-size:17px;font-weight:600;color:var(--text)}
.countdown > i{width:1px;height:44px;background:var(--edge)}
.countdown .date{display:inline-flex;align-items:center;margin-left:14px;padding:10px 14px;border-radius:12px;background:linear-gradient(180deg,#ff8a5c,var(--orange));box-shadow:inset 0 1px 0 rgba(255,255,255,.5),0 0 18px -4px rgba(255,90,31,.9);color:#fff;font-weight:800;font-size:17px}
.countdown.open > div,.countdown.open > i{display:none}
.countdown.open .date{margin:0}
@media (max-width:640px){.countdown{padding:10px 12px}.countdown > div{min-width:0;flex:1;padding:6px 4px}.countdown .date{width:100%;justify-content:center;margin:10px 0 0}.countdown > i{display:none}}
.hero .cd{display:inline-flex;align-items:center;gap:12px;padding:8px 14px 8px 12px;border-radius:12px;background:var(--glass);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge);font-size:17px;font-weight:700;color:#fff;margin-bottom:22px;white-space:nowrap}
.hero .cd b{display:inline-flex;gap:2px;padding:3px;border-radius:9px;background:rgba(4,8,30,.55);box-shadow:inset 0 1px 0 rgba(255,255,255,.14),0 0 0 1px var(--edge);font-variant-numeric:tabular-nums;color:var(--text);font-weight:700}
.hero .cd b u{text-decoration:none;display:inline-flex;align-items:baseline;gap:4px;padding:3px 9px;border-radius:7px;font-size:17px;font-weight:600;color:var(--text)}
.hero .cd b u + u{border-left:1px solid var(--edge);border-radius:0}
.hero .cd b em{font-style:normal;color:#fff;font-weight:800;font-size:19px}
.hero .cd.open b{display:none}
@media (max-width:640px){.hero .cd{white-space:nowrap;flex-direction:row;align-items:center;justify-content:space-between;gap:8px;padding:6px 6px 6px 12px;width:100%;max-width:100%;min-width:0;border-radius:12px;margin-bottom:16px;overflow:hidden}.hero .cd span{font-size:17px;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis}.hero .cd b{gap:0;padding:2px;flex:none}.hero .cd b u{padding:3px 5px;gap:1px;font-size:17px}.hero .cd b em{font-size:17px}.hero .cd b u:nth-child(1)::after{content:"d"}.hero .cd b u:nth-child(2)::after{content:"h"}.hero .cd b u:nth-child(3)::after{content:"m"}.hero .cd b u{font-size:0}.hero .cd b u::after{font-size:17px;color:var(--text)}}
@media (max-width:360px){.hero .cd span{display:none}.hero .cd{padding:6px;justify-content:center}}
.final .next li{opacity:0;transform:translateY(10px)}
.final .next.in li{animation:nodeIn .7s var(--ease) forwards;animation-delay:calc(var(--d) * .16s + .2s)}
.final .next li i{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(180deg,rgba(60,95,255,.55),rgba(26,51,214,.6));box-shadow:inset 0 1px 0 rgba(255,255,255,.45),0 0 16px -6px rgba(36,73,255,.9);color:#fff}
.final .next li i svg{width:19px;height:19px}
.final .next li i svg path{stroke-dasharray:1;stroke-dashoffset:1}
.final .next.in li i svg path{animation:draw .9s var(--ease) forwards;animation-delay:calc(var(--d) * .16s + .5s + var(--k,0) * .15s)}
.final .next li i svg path:nth-child(2){--k:1}
.final .next li:first-child i{background:linear-gradient(180deg,#ff8a5c,var(--orange));box-shadow:inset 0 1px 0 rgba(255,255,255,.55),0 0 18px -4px rgba(255,90,31,.95)}
.final .next li.lk{padding:0;background:none;box-shadow:none;backdrop-filter:none;width:clamp(26px,4vw,56px);height:1px;position:relative;border-radius:0;background:var(--edge);margin:0 4px;--len:clamp(26px,4vw,56px)}
.final .next li.lk b{position:absolute;top:50%;left:0;width:6px;height:6px;margin:-3px 0 0 -3px;border-radius:50%;background:#fff;box-shadow:0 0 10px 2px rgba(190,205,255,.9);opacity:0}
.final .next.in li.lk b{animation:dotRun 1.9s linear infinite;animation-delay:calc(var(--d) * .16s + .8s + var(--j,0) * .9s)}
.final .next li.lk b:nth-child(2){--j:1}
.final h2 .serif{position:relative}
.final h2 .serif::after{content:"";position:absolute;left:0;right:0;bottom:-.06em;height:2px;border-radius:2px;background:linear-gradient(90deg,transparent,#fff,transparent);box-shadow:0 0 14px rgba(190,205,255,1);transform:scaleX(0);transition:transform 1.1s var(--ease) .5s}
.final h2.in .serif::after{transform:scaleX(1)}
footer .sig{position:relative;height:1px;background:var(--edge);margin-top:18px;max-width:52ch;overflow:hidden}
footer .sig i{position:absolute;top:0;bottom:0;width:30%;background:linear-gradient(90deg,transparent,#fff,transparent);box-shadow:0 0 10px rgba(190,205,255,1);animation:travel 3.4s linear infinite}
footer .logo .play{transition:transform .45s var(--ease),box-shadow .45s}
footer .logo:hover .play{transform:scale(1.15);box-shadow:0 0 18px -2px rgba(255,90,31,1)}
@media (max-width:1120px){.final .next{flex-direction:column;align-items:center;gap:0}.final .next li.lk{width:1px;height:28px;margin:4px 0;--len:28px}.final .next li.lk b{top:0;left:50%;margin:-3px 0 0 -3px}.final .next.in li.lk b{animation-name:dotDown}}
@media (max-width:520px){.nav-cta .t-long{display:none}.nav-cta .t-short{display:grid}.nav .logo{font-size:18px}.nav .wrap,.nav .logo{min-width:0}}
@keyframes dotDown{0%{opacity:0;transform:translateY(0)}15%{opacity:1}85%{opacity:1}100%{opacity:0;transform:translateY(var(--len,28px))}}
@media (max-width:640px){.nav .logo{font-size:19px}.nav-cta{padding:12px 16px;min-height:44px}.nav .wrap{gap:8px}
  .burger{width:44px;height:44px;margin-right:-6px}
  .faq .qa details{padding:0 16px}.faq .qa summary{gap:12px}.faq .qa summary::before{width:38px;height:38px}.faq .qa .ans p{padding-left:50px}.final .next{flex-direction:column;align-items:stretch;gap:8px}.final .next li{width:100%;max-width:420px}.faq .qorb{width:140px}}
@media (prefers-reduced-motion:reduce){.faq .qorb .blip,.final .next li.lk b,footer .sig i{animation:none}.faq .qorb .bub,.faq .qorb .q{stroke-dashoffset:0}.final .next li{opacity:1;transform:none}.final .next li i svg path{stroke-dashoffset:0}}

/* footer */
footer{background:#03061a;color:#fff;padding:72px 0 36px;border-top:1px solid var(--edge);position:relative}
footer::before{content:"";position:absolute;left:20%;right:20%;top:-1px;height:1px;background:linear-gradient(90deg,transparent,#fff,transparent);filter:drop-shadow(0 0 10px rgba(190,205,255,1))}
footer .top{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,.8fr);gap:40px;padding-bottom:48px;border-bottom:1px solid var(--edge)}
footer .top p{margin-top:18px;font-size:18px;max-width:52ch;color:var(--text);line-height:1.6}
footer h4{font-size:19px;font-weight:800;margin-bottom:16px}
footer ul{list-style:none;display:grid;gap:10px}
footer ul a{color:var(--text);font-size:18px;font-weight:500;display:inline-flex;gap:8px;align-items:center;position:relative;padding:2px 0}
footer ul a::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:#fff;box-shadow:0 0 8px rgba(190,205,255,1);transform:scaleX(0);transform-origin:right;transition:transform .45s var(--ease)}
footer ul a:hover{color:#fff}
footer ul a:hover::after{transform:scaleX(1);transform-origin:left}
footer .totop{display:inline-flex;align-items:center;gap:10px;padding:10px 16px;min-height:44px;border-radius:12px;background:var(--glass);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge);color:#fff;font-weight:700;font-size:17px;transition:box-shadow .4s,background .4s}
footer .totop svg{width:18px;height:18px;transition:transform .45s var(--ease)}
footer .totop:hover{color:#fff;background:rgba(36,73,255,.22);box-shadow:inset 0 1px 0 rgba(255,255,255,.35),0 0 0 1px rgba(190,205,255,.85),0 0 20px -6px rgba(36,73,255,.9)}
footer .totop:hover svg{transform:translateY(-4px)}
footer .bottom{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px 24px;padding-top:28px;font-size:17px;font-weight:500;color:var(--text)}
footer .bottom a{color:#fff}

/* reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .55s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal[data-d="1"]{transition-delay:.06s}.reveal[data-d="2"]{transition-delay:.12s}.reveal[data-d="3"]{transition-delay:.18s}
.hero .reveal{transition-duration:1.1s}

@media (min-width:1025px){
  .hero .wrap{grid-template-columns:minmax(0,1fr);grid-template-areas:"copy" "visual";justify-items:center;gap:0}
  .hero .copy{width:100%;max-width:760px;min-height:calc(100svh - 120px);display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center}
  .hero h1{max-width:16ch;margin-inline:auto}
  .hero .form{max-width:640px}
  .hero .trust{width:100%;max-width:none;mask-image:none;-webkit-mask-image:none;overflow:visible}
  .hero .stats{animation:none;width:auto;justify-content:center;flex-wrap:wrap;gap:12px;padding:0}
  .hero .stat{margin:0}
  .hero .stat.dup{display:none}
  .hero .cta-row{justify-content:center;gap:18px 28px}
  .hero .faces{text-align:left}
  .hero .faces span{line-height:1.3}
  .hero .visual{width:100%;max-width:560px;margin-top:clamp(72px,12vh,140px);margin-bottom:24px}
  .console{width:100%}
  .hero{padding-bottom:150px}
  .hero .horizon{height:110px}
  .scroll-hint{display:none}
  .dots{width:auto;max-width:100%;grid-template-columns:repeat(3,auto)}
  .dots button{padding:8px 18px}
  .dots button span{white-space:nowrap;overflow:visible;text-overflow:clip}
}
@media (max-width:1024px){
  .nav-links{display:none}.burger{display:flex;flex:none}
  .nav .wrap{gap:12px}
  .hero .wrap{grid-template-columns:1fr;grid-template-areas:"copy" "visual";gap:48px}
  .hero .spot{display:none}
  .hero h1{max-width:18ch}
  .visual{align-items:stretch}
  .console{width:min(100%,560px);margin-inline:auto}
  .stack{aspect-ratio:auto;min-height:540px}
  .dcard[data-pos="1"]{transform:translate3d(0,-18px,-80px) scale(.95)}
  .dcard[data-pos="2"]{transform:translate3d(0,-36px,-160px) scale(.9)}
  .dots{width:min(100%,560px)}
  .dots,.stack-hint{position:relative;z-index:5;align-self:center}
  .sec-head{grid-template-columns:1fr}
  .why .head{grid-template-columns:1fr}
  .why .head .clip{width:min(100%,260px);margin-top:-8px}
  .why .after{grid-template-columns:1fr;grid-template-areas:"clip" "text" "btn"}
  .why .after .clip{width:min(100%,640px)}
  .os .title{grid-template-columns:minmax(0,1fr) 120px}
  .cmpwrap{aspect-ratio:4/3}
  .teachers .grid{grid-template-columns:1fr 1fr;align-items:start}
  .teachers .mid{grid-column:1/-1;order:-1}
  .teachers .mid .lead{max-width:60ch}
  .aisearch .cols{grid-template-columns:1fr}
  .kit{display:none}
  .kit-cards{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;scroll-padding-inline:clamp(16px,3vw,48px);padding:4px 0 24px;scrollbar-width:none;list-style:none;margin:0 calc(-1 * clamp(16px,3vw,48px));padding-inline:clamp(16px,3vw,48px)}
  .kit-cards::-webkit-scrollbar{display:none}
  .kit-cards li{flex:none;width:calc((100% - 16px) / 2 - 36px);scroll-snap-align:start;border-radius:22px;background:var(--glass);box-shadow:inset 0 1px 0 var(--edge-hi),0 0 0 1px var(--edge);color:#fff;overflow:hidden;display:flex;flex-direction:column}
  .kit-cards .vs{position:relative;aspect-ratio:4/3;background:rgba(4,8,30,.5)}
  .kit-cards .mock{position:absolute;inset:0;padding:18px;display:flex;flex-direction:column;gap:10px}
  .kit-cards .body{padding:20px 22px 24px}
  .kit-cards .top{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:10px}
  .kit-cards .n{width:36px;height:36px;border-radius:10px;background:var(--orange);box-shadow:inset 0 1px 0 rgba(255,255,255,.5);color:#fff;display:grid;place-items:center;font-weight:800;font-size:17px}
  .kit-cards .fmt{font-size:17px;font-weight:700;color:var(--blue)}
  .kit-cards h3{font-size:22px;margin-bottom:8px}
  .kit-cards p{font-size:18px;line-height:1.5;color:var(--text)}
  .kit-nav{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:14px;margin-top:4px}
  .kit-nav button{width:48px;height:48px;border-radius:12px;border:1px solid var(--edge);background:rgba(4,8,30,.5);box-shadow:inset 0 1px 0 var(--edge-hi);color:#fff;cursor:pointer;display:grid;place-items:center;transition:background .3s,border-color .3s,box-shadow .3s}
  .kit-nav button svg{width:20px;height:20px}
  .kit-nav button:hover{background:var(--cobalt-deep);border-color:rgba(190,205,255,.9);box-shadow:0 0 18px -4px rgba(36,73,255,.9)}
  .kdots{display:flex;justify-content:center;gap:8px}
  .kdots i{width:8px;height:8px;border-radius:50%;background:rgba(190,205,255,.35);transition:width .4s var(--ease),background .3s,box-shadow .3s}
  .kdots i.on{width:26px;border-radius:5px;background:#fff;box-shadow:0 0 10px rgba(190,205,255,.9)}
  .khint{grid-column:1/-1;display:flex;justify-content:center;align-items:center;gap:8px;font-size:17px;font-weight:600;color:#fff;margin-top:8px}
  .khint svg{width:18px;height:18px}
  .faq .grid{grid-template-columns:1fr;gap:28px}.faq .side{position:static;display:grid;grid-template-columns:auto minmax(0,1fr);gap:8px 24px;align-items:center}
  .faq .side .qorb{grid-row:1/4;width:130px;margin:0}.faq .side h2,.faq .side p,.faq .side .btn{grid-column:2}.faq .side p{margin-top:0}.faq .side .btn{margin-top:8px;justify-self:start}
  .includes{padding-bottom:clamp(56px,7vw,96px)}.faq{padding-top:clamp(56px,7vw,96px)}
  footer .top{grid-template-columns:1fr 1fr}
  .hscroll{height:auto!important}
  .hscroll .pin{position:static;min-height:0;padding:clamp(88px,10vw,150px) 0}
  .os{grid-template-columns:minmax(0,1fr);gap:28px}
  .screen,.os-mobile,.os > div{min-width:0}
  .screen{padding-bottom:0}.screen::after{display:none}
  .os .lead{margin-bottom:0}
  .chapters{display:none}
  .os-mobile{display:block;margin-top:4px}
  .os-mobile .chips{display:flex;gap:10px;overflow-x:auto;scroll-snap-type:x mandatory;scroll-padding-inline:18px;padding:4px 18px 12px;scrollbar-width:none;list-style:none;min-width:0;max-width:100%;mask-image:linear-gradient(90deg,transparent,#000 18px,#000 calc(100% - 18px),transparent);-webkit-mask-image:linear-gradient(90deg,transparent,#000 18px,#000 calc(100% - 18px),transparent)}
  .os-mobile .chips::-webkit-scrollbar{display:none}
  .os-mobile .chips button{flex:none;scroll-snap-align:start;display:inline-flex;align-items:center;gap:10px;padding:10px 16px 10px 10px;border-radius:12px;border:1px solid var(--edge);background:rgba(4,8,30,.45);color:#fff;font-weight:700;font-size:17px;cursor:pointer;min-height:48px;white-space:nowrap;transition:background .3s,border-color .3s}
  .os-mobile .chips button .n{width:28px;height:28px;border-radius:50%;background:rgba(255,255,255,.18);display:grid;place-items:center;font-size:17px}
  .os-mobile .chips li.on button{background:var(--orange);border-color:#ffb08a;box-shadow:0 0 18px -4px rgba(255,90,31,.9)}
  .os-mobile .chips li.done button{border-color:rgba(190,205,255,.7);background:rgba(36,73,255,.22)}
  .os-mobile .chips li.on button .n{background:#fff;color:var(--orange)}
  .os-mobile .desc{margin-top:14px}
  .os-mobile .desc h3{font-size:24px;color:#fff;margin-bottom:8px}
  .os-mobile .desc p{font-size:18px;line-height:1.55;color:var(--text)}
  .os-mobile .nav{display:flex;gap:10px;margin-top:16px}
  .os-mobile .nav button{width:52px;height:52px;border-radius:14px;border:1px solid var(--edge);background:rgba(4,8,30,.45);color:#fff;cursor:pointer;display:grid;place-items:center;transition:background .3s}
  .os-mobile .nav button:hover{background:rgba(255,255,255,.12)}
  .os-mobile .nav button svg{width:22px;height:22px}
  .courses .grid{grid-template-columns:1fr}
  .courses .side{position:static}
  .route{display:none}
  .deck{position:static;transform:none!important;filter:none!important;margin-bottom:20px}
  .why .head{grid-template-columns:minmax(0,1fr) clamp(170px,22vw,240px);grid-template-areas:"h2 h2" "p clip";gap:28px}
  .why .head h2{grid-area:h2}.why .head .rv{grid-area:p}.why .head .clip{grid-area:clip;width:100%;margin-top:0;align-self:start}
  .deck .steps{flex-wrap:wrap;gap:10px;justify-content:flex-start}
  .deck .steps::before{display:none}
  .deck .steps li{flex:none;display:block}
  .deck .steps button{display:inline-flex;align-items:center;gap:8px;padding:9px 14px 9px 10px;border-radius:10px;border:1px solid var(--edge);background:rgba(4,8,30,.4);min-height:44px}
  .deck .steps button i{width:26px;height:26px;border-radius:8px}
  .deck .steps button i svg{width:16px;height:16px}
  .deck .steps button i::before{display:none}
  .deck .steps button:hover i,.deck .steps button[aria-pressed="true"] i{transform:none}
  .deck .steps button span{max-width:none;overflow:visible;text-overflow:clip}
  .deck .steps::after{display:none}
  .deck::before{display:none}
  .deck .steps button i::after{transform:scale(1);background:currentColor;opacity:.4}
  .deck .steps button[aria-pressed="true"]{background:var(--orange);border-color:#ffb08a;color:#fff;box-shadow:0 0 18px -4px rgba(255,90,31,.9)}
  .deck .steps button[aria-pressed="true"] span{color:#fff}
  .deck .steps button[aria-pressed="true"] i::after{background:#fff;opacity:1}
}
@media (max-width:640px){
  .faq .side{display:flex;flex-direction:column;align-items:flex-start;gap:0}
  .faq .side .qorb{width:110px;margin:0 0 6px}
  .faq .side h2,.faq .side p,.faq .side .btn{grid-column:auto}
  .faq .side p{margin-top:12px}
  .faq .side .btn{margin-top:20px;width:100%;justify-content:center}
  .kit-cards li{width:min(360px,86vw)}
  .kit-cards .vs{aspect-ratio:16/10}
  .kit-cards .mock{padding:16px}
  .kit-cards .body{padding:18px 18px 22px}
  .kit-cards h3{font-size:21px}
  .kit-cards p{font-size:17px}
  .deck .body{grid-template-columns:1fr}
  .deck .side{display:grid;grid-template-columns:minmax(0,1fr)}
  .deck .body .clip{width:min(100%,300px)}
  .deck .body .side{grid-template-columns:1fr}
  .os .title{grid-template-columns:minmax(0,1fr) 96px;gap:14px}
  .why .head{grid-template-columns:1fr;grid-template-areas:"h2" "p" "clip"}
  .why .head .clip{width:min(100%,240px);align-self:start}
  :root{--nav-h:72px;--radius:22px}
  body{font-size:18px}
  .hero{padding-top:44px;padding-bottom:130px}
  .hero .badge{margin-bottom:16px}
  .hero h1{margin-bottom:36px;margin-top:8px}
  .hero .cd{margin-bottom:24px}
  .hero .form{padding:24px 20px 22px;gap:18px}
  .hero .trust{margin-top:30px}
  .hero .copy .cta-row{margin-top:34px}
  .hero .sub{margin-bottom:20px}
  .hero .trust{margin-top:22px}
  .hero .wrap{gap:40px}
  .stack{min-height:540px}
  .dcard .art{margin:0}.dcard .art svg{width:36%}
  .console{padding-top:20px;margin-bottom:0}
  .dots button span{font-size:17px}
  .hero .cta-row{flex-direction:column;align-items:stretch}
  .hero .cta-row .btn{order:2}
  .hero .faces{justify-content:center}
  .hero .copy{text-align:center;display:flex;flex-direction:column;align-items:center}
  .hero h1{margin-inline:auto}
  .hero .form{text-align:left}
  .hero .trust,.hero .form,.hero .cta-row,.hero .cd{width:100%}
  .hero .horizon{height:120px}
  .stat{padding:10px 16px}
  .form{grid-template-columns:1fr;border-radius:20px}
  .hero .cta-row .btn{width:100%;justify-content:center}
  .cmpwrap{aspect-ratio:4/5}
  .teachers .grid{grid-template-columns:1fr}
  .teacher .ph{aspect-ratio:4/3.6}
  .lab .bar{grid-template-columns:1fr}
  .switch{white-space:normal;text-align:left;width:100%;justify-content:flex-start;line-height:1.3}
  .lab .prompt span{white-space:normal}
  .cmpwrap .lbl{font-size:17px;padding:8px 12px;top:12px}
  .cmpwrap .lbl.a{left:12px}.cmpwrap .lbl.b{right:12px}
  .ans p{padding-right:0}
  footer .top{grid-template-columns:1fr}
  .scroll-hint{display:none}
  .marquee .item{font-size:18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}