:root{--ink:#0f2545;--muted:#5b6b85;--blue:#1c5fc4;--blue-deep:#164a9c;--cyan:#0e93a8;--navy:#0b1a33;--paper:#f4f7fc;--line:#e1e8f4;--white:#fff;--shadow:0 10px 30px rgba(16,37,74,.08);--shadow-lg:0 20px 48px rgba(16,37,74,.16);--radius:16px;font-family:'Inter',Arial,Helvetica,sans-serif;color:var(--ink);background:var(--paper);font-size:16px;-webkit-font-smoothing:antialiased}
*{box-sizing:border-box}
body{margin:0}
button,input,select,textarea{font:inherit}
button{cursor:pointer;border:0;border-radius:11px;padding:12px 20px;background:var(--blue);color:#fff;font-weight:600;min-height:44px;transition:background .18s ease,transform .12s ease,box-shadow .18s ease;box-shadow:0 2px 8px rgba(28,95,196,.22)}
button:hover:not(:disabled){background:var(--blue-deep);transform:translateY(-1px);box-shadow:0 6px 16px rgba(28,95,196,.28)}
button:active:not(:disabled){transform:translateY(0)}
button:disabled{cursor:default;opacity:.42;box-shadow:none}
button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible{outline:3px solid #e29d2f;outline-offset:3px}
a{color:var(--blue)}
h1,h2,h3,.brand,.eyebrow{font-family:'Plus Jakarta Sans','Inter',Arial,sans-serif}
header{background:#fff;border-bottom:1px solid var(--line);padding:18px 4vw;display:flex;align-items:center;gap:30px;position:sticky;top:0;z-index:10}
.brand{text-decoration:none;color:var(--ink);font-weight:800;letter-spacing:1.5px;display:flex;align-items:center;gap:12px}
.brand small{display:block;font-size:11px;letter-spacing:2.2px;margin-top:4px;color:var(--muted);font-weight:700}
.mark{display:grid;place-items:center;width:44px;height:44px;background:linear-gradient(135deg,var(--blue),var(--cyan));color:#fff;border-radius:13px;font-size:21px;font-weight:800;box-shadow:0 4px 12px rgba(28,95,196,.3)}
nav{display:flex;gap:6px;margin-left:auto}
.nav{background:transparent;color:var(--muted);font-size:14px;box-shadow:none}
.nav:hover:not(:disabled){background:#eef3fb;color:var(--ink);transform:none;box-shadow:none}
.nav.active{background:#e8f1fd;color:var(--blue);font-weight:700}
.outline{background:#fff;border:1.5px solid var(--line);color:var(--ink);box-shadow:none}
.outline:hover:not(:disabled){background:#f7faff;border-color:var(--blue);color:var(--blue);box-shadow:none;transform:translateY(-1px)}
.quiet{background:transparent;color:var(--muted);box-shadow:none}
.quiet:hover:not(:disabled){background:#eef3fb;box-shadow:none;transform:none}
.danger{background:#b6304a;box-shadow:0 2px 8px rgba(182,48,74,.25)}
.danger:hover:not(:disabled){background:#96263c}
.primary{background:var(--blue)}
[hidden]{display:none!important}
main{max-width:1360px;margin:auto;padding:36px 4vw 64px}
h1{font-size:34px;letter-spacing:-.8px;margin:10px 0 12px;font-weight:700}
h2{font-size:23px;margin:0 0 16px;font-weight:700}
h3{font-size:18px;margin:8px 0 10px;font-weight:700}
p{line-height:1.6}
.eyebrow{font-size:12px;letter-spacing:1.8px;font-weight:700;color:var(--cyan);text-transform:uppercase}
.subtle{color:var(--muted);font-size:14px;line-height:1.55}
.intro{display:flex;justify-content:space-between;align-items:center;gap:25px;margin-bottom:28px}
.intro p{max-width:650px;color:var(--muted);margin:0}
.summary{display:flex;gap:25px;border-left:1px solid var(--line);padding-left:25px}
.summary strong{display:block;font-size:26px;font-family:'Plus Jakarta Sans',sans-serif}
.summary span{font-size:12.5px;color:var(--muted)}
.filters{display:flex;gap:9px;flex-wrap:wrap;margin:22px 0}
.chip{background:#fff;border:1.5px solid var(--line);color:var(--muted);border-radius:30px;padding:9px 16px;font-size:13.5px;min-height:40px;transition:all .15s ease;box-shadow:none}
.chip:hover:not(:disabled){border-color:var(--blue);color:var(--blue);transform:none;box-shadow:none;background:#fff}
.chip.active{background:var(--ink);color:#fff;border-color:var(--ink)}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;min-height:265px;box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.card.demo{border:2px solid var(--cyan);background:linear-gradient(135deg,#fff,#eaf8fa)}
.cardtop{display:flex;justify-content:space-between;align-items:center}
.number{font-size:12px;letter-spacing:1.5px;font-weight:700;color:var(--muted)}
.badge{font-size:11.5px;padding:5px 10px;border-radius:7px;background:#eef3fb;color:var(--muted);font-weight:600}
.badge.open{background:#dcf3ee;color:#127a63}
.glyph{font-size:28px;height:42px;letter-spacing:5px;color:var(--blue)}
.card p{font-size:14px;color:var(--muted);margin:0 0 15px}
.card .bottom{margin-top:auto;display:flex;justify-content:space-between;align-items:center;gap:10px}
.card button{font-size:14px;padding:10px 15px}
.category{font-size:11.5px;color:var(--cyan);font-weight:700;text-transform:uppercase;letter-spacing:.4px}
.notice{background:#eaf1fb;border:1px solid #d7e6fa;border-radius:13px;padding:16px 19px;font-size:14px;line-height:1.55;margin:20px 0;color:#274972}
.panel{background:#fff;border:1px solid var(--line);padding:26px;border-radius:var(--radius);box-shadow:var(--shadow)}
.split{display:grid;grid-template-columns:1fr 320px;gap:22px}
.settings{display:grid;gap:15px}
label{display:grid;gap:7px;font-size:14px;font-weight:600}
input,select,textarea{padding:12px 13px;border:1.5px solid #cbd8e6;border-radius:10px;color:var(--ink);background:#fff;width:100%;min-height:44px;transition:border-color .15s ease}
input:hover,select:hover,textarea:hover{border-color:#a9c0d9}
input[type=checkbox]{width:19px;min-height:19px}
textarea{min-height:100px}
.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.stack{display:grid;gap:16px}
.setup{max-width:900px;margin:0 auto}
.setup ul{line-height:1.75;padding-left:20px}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:18px 0}
.metric{background:linear-gradient(145deg,#eef4fc,#e7f0fb);padding:18px;border-radius:14px;border:1px solid #dfe9f7}
.metric strong{font-size:25px;display:block;font-family:'Plus Jakarta Sans',sans-serif;color:var(--ink)}
.metric span{font-size:12.5px;color:var(--muted)}
.playtop{display:flex;align-items:center;gap:16px;justify-content:space-between;margin-bottom:16px}
.playtop h2{margin:0}
.progress{height:6px;background:#dce7f4;border-radius:9px;overflow:hidden}
.progress i{display:block;height:100%;background:linear-gradient(90deg,var(--blue),var(--cyan));transition:width .25s ease}
.arena{position:relative;min-height:380px;height:48vh;max-height:540px;background:#fbfcff;border:1px solid var(--line);border-radius:20px;overflow:hidden;display:flex;align-items:center;justify-content:center;flex-direction:column;padding:24px;box-shadow:inset 0 1px 0 #fff}
.arena[data-motion=true]{touch-action:none;padding:0}
.instruction{font-size:18px;text-align:center;line-height:1.45;margin:12px 0;font-weight:600;color:var(--ink)}
.stimulus{font-size:68px;line-height:1.2;font-weight:700;text-align:center;user-select:none;font-family:'Plus Jakarta Sans',sans-serif}
.options{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin:20px 0}
.options button{font-size:19px;min-width:100px}
.grid{display:grid;gap:9px;width:min(420px,90%);margin:15px auto}
.tile{min-height:56px;font-size:24px;padding:8px;background:#eaf1fa;color:var(--ink);border:2px solid #cddceb;border-radius:10px;transition:all .15s ease;box-shadow:none;min-width:0}
.tile:hover:not(:disabled){transform:none;box-shadow:none;background:#e0ecf9}
.tile.lit{background:linear-gradient(135deg,var(--blue),#2f7bd6);color:#fff;border-color:var(--blue)}
.tile.selected{background:#dcf3ee;border-color:#1f9c81}
.tile.correct{background:#c9eeda;border-color:#1f9c81}
.tile.wrong{background:#fbdde3;border-color:#d3607a}
.feedback{font-size:22px;text-align:center;padding:26px;line-height:1.5;font-weight:600}
.feedback.good{color:#127a5c}
.feedback.bad{color:#ad3450}
.keyhint{text-align:center;color:var(--muted);font-size:12.5px;margin:12px}
.canvas{width:100%;height:100%;display:block}
.move-target{position:absolute;border:3px solid #fff;box-shadow:0 0 0 3px var(--cyan),0 4px 14px rgba(14,147,168,.4);border-radius:50%;background:linear-gradient(135deg,var(--cyan),#0a7688);min-height:0;padding:0;width:45px;height:45px;transform:translate(-50%,-50%)}
.pause-cover{position:absolute;inset:0;background:rgba(11,26,51,.94);z-index:5;color:#fff;display:grid;place-items:center;text-align:center;backdrop-filter:blur(2px)}
.pause-cover button{margin-top:20px}
.tablewrap{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:13.5px}
th,td{text-align:left;border-bottom:1px solid var(--line);padding:13px 10px}
th{color:var(--muted);font-size:11.5px;background:#f4f8fd;text-transform:uppercase;letter-spacing:.4px}
tbody tr{transition:background .12s ease}
tbody tr:hover{background:#f7faff}
svg.chart{width:100%;height:220px;background:#f8fbfe;border-radius:14px}
.empty{padding:50px;text-align:center;color:var(--muted)}
.profile{display:flex;align-items:center;gap:15px;justify-content:space-between;background:#f3f7fc;padding:16px;border-radius:13px;transition:background .15s ease}
.profile:hover{background:#eef4fb}
.planlist{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.planlist label{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:400}
.sectionhead{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px;gap:15px}
dialog{border:none;border-radius:20px;padding:32px;color:var(--ink);max-width:500px;width:calc(100% - 30px);box-shadow:0 30px 90px rgba(16,37,74,.28)}
dialog::backdrop{background:rgba(11,26,51,.55);backdrop-filter:blur(2px)}
dialog h2{margin-top:0}
.error{color:#a32e46;font-size:14px;min-height:20px}
.pin{font:700 32px 'Plus Jakarta Sans',monospace;letter-spacing:4px;background:linear-gradient(135deg,#eaf3ff,#e3f6f9);padding:18px;border-radius:13px;text-align:center;border:1px dashed #b9d4f2}
#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:var(--navy);color:#fff;border-radius:11px;padding:14px 22px;z-index:20;display:none;max-width:90%;box-shadow:0 12px 30px rgba(11,26,51,.35)}
footer{text-align:center;padding:26px;border-top:1px solid var(--line);color:var(--muted);font-size:13px;line-height:1.8}
.legend{font-size:12px;color:var(--muted)}
.game-running footer{display:none}
.game-running main{padding-top:20px}
.game-running .nav{pointer-events:none;opacity:.5}
@media(max-width:1000px){.cards{grid-template-columns:repeat(2,1fr)}.split{grid-template-columns:1fr}.summary{display:none}header{gap:12px;flex-wrap:wrap}nav{order:3;width:100%;margin:0}.brand{margin-right:auto}}
@media(max-width:600px){main{padding:24px 18px}.cards{grid-template-columns:1fr}.intro h1{font-size:28px}.metrics{grid-template-columns:repeat(2,1fr)}.arena{height:50vh;min-height:360px;padding:15px}.playtop{align-items:flex-start;flex-wrap:wrap}.stimulus{font-size:52px}.panel{padding:20px}.planlist{grid-template-columns:1fr}.options button{min-width:75px;font-size:16px}.nav{font-size:13px;padding:10px}.brand small{font-size:10px}header{padding:14px 18px}.card{min-height:245px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}

.central{display:inline-block;border-bottom:4px solid #d69434;margin:0 3px}
.arena[data-engine=maze]{min-height:570px;height:570px;max-height:none}
.arena[data-engine=maze] .tile{min-height:40px;padding:5px;font-size:21px}
.arena .tile:disabled{opacity:1}
.arena[data-engine=pairs]{min-height:470px;height:470px;max-height:none}
.arena[data-engine=prospective] .instruction{font-size:17px}
summary{cursor:pointer;padding:18px 0;font-weight:600;color:var(--ink)}
output{font-weight:700}
.arena .instruction{flex-shrink:0}
@media(max-width:600px){.arena[data-engine=maze]{min-height:600px;height:600px}.arena[data-engine=maze] .options{gap:7px}.arena[data-engine=maze] .options button{font-size:12px!important;padding:10px;min-width:65px}.arena[data-engine=pairs] .grid{gap:5px}.arena[data-engine=pairs] .tile{min-height:48px}.stimulus{max-width:100%}.arena[data-engine=flanker] .stimulus{font-size:46px}.arena[data-engine=words] .options{margin:10px 0;gap:8px}}
.arena[data-engine=search]{min-height:490px;height:490px;max-height:none}
.arena[data-engine=peripheral]{min-height:460px;height:460px;max-height:none}
.arena[data-engine=span],.arena[data-engine=reverse]{min-height:420px;height:420px;max-height:none}
@media(max-width:600px){.arena[data-engine=search]{min-height:490px}.arena[data-engine=search] .grid{gap:6px;width:100%}.arena[data-engine=search] .tile{padding:6px;min-height:52px;font-size:22px}.arena[data-engine=peripheral] .grid{width:100%}.arena[data-engine=peripheral] .tile{min-height:48px}}