:root{
  --bg:#0f1729; --panel:#1a2438; --panel2:#222f49; --ink:#e8edf6; --muted:#9fb0cc;
  --brand:#2b8aef; --green:#22c55e; --red:#ef4444; --gold:#f5b50a; --line:#2c3a57;
  --radius:16px; --maxw:840px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
  font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}

.site-head{display:flex;align-items:center;justify-content:space-between;
  max-width:var(--maxw);margin:0 auto;padding:16px 20px;}
.brand{font-weight:800;font-size:20px;color:var(--ink)}
.site-head nav a{margin-left:18px;color:var(--muted);font-weight:600}

main{max-width:var(--maxw);margin:0 auto;padding:0 20px 60px}
.hero{text-align:center;padding:24px 0 8px}
h1{font-size:clamp(28px,6vw,44px);margin:.2em 0}
.lede{color:var(--muted);max-width:560px;margin:0 auto;font-size:18px}

.ad-slot{margin:24px 0;min-height:90px;display:flex;align-items:center;justify-content:center;
  border:1px dashed var(--line);border-radius:12px;color:#5e6f8d;font-size:13px;background:#131c2e}

.test-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:28px 0}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 16px;cursor:pointer;text-align:center;color:var(--ink);
  display:flex;flex-direction:column;gap:6px;transition:transform .12s,border-color .12s}
.card:hover{transform:translateY(-3px);border-color:var(--brand)}
.card-ico{font-size:30px}
.card-title{font-weight:700;font-size:17px}
.card-sub{color:var(--muted);font-size:13px}

.game{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;margin:0 0 28px}
.game.hidden{display:none}
.game h2{margin:0 0 16px}

.stage{border-radius:14px;min-height:300px;display:flex;align-items:center;justify-content:center;
  text-align:center;cursor:pointer;user-select:none;transition:background .05s}
.stage-inner{display:flex;flex-direction:column;gap:12px;align-items:center;padding:20px}
.stage-inner strong{font-size:clamp(22px,5vw,40px)}
.stage-inner span{color:rgba(255,255,255,.85)}
.stage-wait{background:#c0392b;color:#fff}
.stage-go{background:var(--green);color:#06310f}
.stage-result{background:var(--brand);color:#fff}
.stage-early{background:#7c2d12;color:#fff}
.stage-blue{background:var(--panel2);cursor:default}
.stage-dark{background:#0b1220;position:relative;cursor:crosshair;overflow:hidden}

.num-input{font-size:28px;padding:10px 14px;border-radius:10px;border:2px solid var(--brand);
  background:#fff;color:#111;text-align:center;width:min(320px,80%);letter-spacing:3px}
.memory-controls{display:flex;gap:10px}
.btn{background:var(--brand);color:#fff;border:0;border-radius:10px;padding:12px 22px;
  font-size:16px;font-weight:700;cursor:pointer}
.btn:hover{filter:brightness(1.08)}
.aim-hud{position:absolute;top:12px;left:0;right:0;display:flex;justify-content:space-around;
  color:#cfe;font-weight:700;font-size:16px}
.aim-start{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}
.target{position:absolute;width:46px;height:46px;border-radius:50%;
  background:radial-gradient(circle at 35% 35%,#7dd3fc,#2b8aef);border:3px solid #fff;cursor:crosshair}

.result{margin-top:16px;padding:14px 16px;border-radius:12px;background:var(--panel2);
  font-size:18px;text-align:center}
.result.good{box-shadow:inset 0 0 0 2px var(--green)}
.best{margin-top:10px;color:var(--muted);text-align:center}
.actions{margin-top:14px;text-align:center}
.btn-share{background:var(--gold);color:#3a2a00;border:0;border-radius:10px;
  padding:10px 18px;font-weight:700;cursor:pointer}
.btn-share:hover{filter:brightness(1.06)}

.prose{margin-top:36px;max-width:680px}
.prose h2{margin:1.4em 0 .4em;font-size:24px}
.prose h3{margin:1.1em 0 .3em;font-size:18px;color:#cdd9ee}
.prose p,.prose li{color:#c6d2e6}
.prose details{background:var(--panel);border:1px solid var(--line);border-radius:10px;
  padding:12px 16px;margin:8px 0}
.prose summary{cursor:pointer;font-weight:600;color:var(--ink)}

.site-foot{border-top:1px solid var(--line);max-width:var(--maxw);margin:0 auto;
  padding:24px 20px;color:var(--muted);text-align:center;font-size:14px}
.site-foot nav{margin-bottom:8px}

.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);
  background:#fff;color:#111;padding:12px 18px;border-radius:10px;font-weight:600;
  box-shadow:0 8px 30px rgba(0,0,0,.4);opacity:0;transition:opacity .2s;pointer-events:none;z-index:50}
.toast.show{opacity:1}

/* ===== expanded test grid (8 tests) ===== */
.test-grid.wide{grid-template-columns:repeat(4,1fr)}

/* HUD shared (level / lives / score) */
.hud{display:flex;gap:18px;justify-content:center;margin-bottom:14px;color:var(--muted);font-weight:600}
.hud b{color:var(--ink)}

/* ===== Sequence Memory ===== */
.seq-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;max-width:340px;margin:0 auto}
.seq-cell{aspect-ratio:1;border:0;border-radius:12px;background:var(--panel2);cursor:pointer;transition:background .1s,transform .05s}
.seq-cell:hover{background:#2c3c5c}
.seq-cell.on{background:var(--brand);box-shadow:0 0 18px var(--brand);transform:scale(1.03)}

/* ===== Visual Memory ===== */
.vis-grid{display:grid;gap:8px;max-width:420px;margin:0 auto}
.vis-cell{aspect-ratio:1;border:0;border-radius:8px;background:var(--panel2);cursor:pointer;transition:background .08s}
.vis-cell:hover{background:#2c3c5c}
.vis-cell.on{background:#fff}
.vis-cell.done{background:var(--brand)}
.vis-cell.miss{background:var(--red)}

/* ===== Chimp Test ===== */
.chimp-grid{display:grid;gap:6px;max-width:460px;margin:0 auto}
.chimp-cell{aspect-ratio:1;border:0;border-radius:6px;background:transparent;cursor:pointer;
  font-size:clamp(14px,3.5vw,22px);font-weight:800;color:#0b1220}
.chimp-cell.num{background:#fff}
.chimp-cell.num.hid{background:#fff}
.chimp-cell.ok{background:var(--green)}

/* ===== Verbal Memory ===== */
.verb-word{font-size:clamp(28px,7vw,52px);font-weight:800;letter-spacing:.5px}
.verb-btns{display:flex;gap:14px;justify-content:center;margin-top:8px}
.verb-btns .btn{min-width:120px}
.btn.ghost{background:transparent;border:2px solid var(--brand);color:var(--ink)}

/* ===== Typing Test ===== */
.type-text{font:18px/1.9 "SF Mono",ui-monospace,Menlo,Consolas,monospace;background:var(--panel2);
  border-radius:12px;padding:18px 20px;text-align:left;max-width:640px;margin:0 auto 14px;color:var(--muted)}
.type-text .ok{color:var(--green)}
.type-text .bad{color:var(--red);background:rgba(239,68,68,.18);border-radius:3px}
.type-text .cur{background:var(--brand);color:#fff;border-radius:3px}
.type-input{display:block;width:min(640px,100%);margin:0 auto;font:16px/1.6 ui-monospace,monospace;
  padding:12px 14px;border-radius:10px;border:2px solid var(--brand);background:#fff;color:#111;resize:vertical;min-height:90px}

/* ===== cookie consent bar ===== */
.cookie-bar{position:fixed;left:0;right:0;bottom:0;z-index:60;background:#0b1220;border-top:1px solid var(--line);
  color:var(--muted);font-size:14px;padding:14px 18px;display:flex;gap:16px;align-items:center;justify-content:center;flex-wrap:wrap}
.cookie-bar a{color:var(--brand)}
.cookie-ok{background:var(--brand);color:#fff;border:0;border-radius:8px;padding:9px 18px;font-weight:700;cursor:pointer}

/* footer columns */
.site-foot nav{margin-bottom:8px;line-height:2}
.site-foot .foot-legal a{color:var(--muted)}

@media(max-width:560px){
  .test-grid,.test-grid.wide{grid-template-columns:repeat(2,1fr)}
  .site-head nav a{margin-left:10px;font-size:13px}
}

/* ===== phase-2 content pages ===== */
.prose table.data{width:100%;border-collapse:collapse;margin:1em 0;font-size:15px}
.prose table.data th,.prose table.data td{border:1px solid var(--line);padding:8px 12px;text-align:left}
.prose table.data th{background:var(--panel);color:var(--ink)}
.prose table.data td{color:#c6d2e6}
.cta-inline{margin:1.2em 0}
.btn-link{display:inline-block;background:var(--brand);color:#fff;text-decoration:none;
  border-radius:10px;padding:11px 20px;font-weight:700}
.related{max-width:680px;margin:32px 0;padding:18px 22px;background:var(--panel);
  border:1px solid var(--line);border-radius:12px}
.related h2{margin:0 0 .5em;font-size:18px}
.related ul,.guide-list{margin:0;padding-left:1.1em}
.related li,.guide-list li{margin:.35em 0}
.related a,.guide-list a{color:var(--brand)}