:root{
  --bg:#f6f7fb; --card:#ffffff; --ink:#101828; --muted:#5b6675; --muted2:#7c8798;
  --line:#e6e9f0; --violet:#6d5efc; --green:#12b76a; --blue:#2e90fa; --orange:#f79009;
  --pink:#ee46bc; --teal:#15b79e; --shadow:0 1px 2px rgba(16,24,40,.05),0 12px 32px -12px rgba(16,24,40,.14);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
  font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  -webkit-font-smoothing:antialiased}
a{color:var(--violet);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1120px;margin:0 auto;padding:0 22px}
header{position:sticky;top:0;z-index:40;background:rgba(246,247,251,.88);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;gap:26px;height:70px}
.brand{display:flex;align-items:center;gap:11px;font-weight:750;letter-spacing:-.01em;color:var(--ink)}
.brand .dot{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--violet),#9d7bff);
  display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 6px 16px -6px rgba(109,94,252,.8)}
.brand small{display:block;font-weight:500;color:var(--muted2);font-size:11px;letter-spacing:.1em;text-transform:uppercase}
nav{margin-left:auto;display:flex;gap:22px;flex-wrap:wrap}
nav a{color:var(--muted);font-size:14.5px;font-weight:520}
nav a:hover,nav a.active{color:var(--violet);text-decoration:none}
.hero{padding:76px 0 54px;text-align:center}
.hero h1{font-size:clamp(30px,5.2vw,52px);line-height:1.08;margin:16px 0 16px;letter-spacing:-.03em}
.hero p{color:var(--muted);font-size:18px;max-width:640px;margin:0 auto}
.pill{display:inline-flex;align-items:center;gap:9px;background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:8px 16px;font-size:13.5px;color:var(--muted);box-shadow:var(--shadow)}
section{padding:26px 0 44px}
.cards{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:var(--shadow);
  transition:transform .16s ease,box-shadow .16s ease;display:flex;flex-direction:column}
a.card{color:inherit}
a.card:hover{transform:translateY(-4px);text-decoration:none;
  box-shadow:0 2px 4px rgba(16,24,40,.05),0 22px 44px -18px rgba(16,24,40,.28)}
.card h3{margin:16px 0 8px;font-size:19.5px;letter-spacing:-.01em}
.card p{margin:0;color:var(--muted);font-size:15px;flex:1}
.card .foot{margin-top:18px;display:flex;align-items:center;justify-content:space-between;
  color:var(--muted2);font-size:13.5px}
.badge{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff}
.b-violet{background:linear-gradient(135deg,#6d5efc,#9d7bff)}
.b-green{background:linear-gradient(135deg,#12b76a,#5ce0a4)}
.b-blue{background:linear-gradient(135deg,#2e90fa,#7cc6ff)}
.b-orange{background:linear-gradient(135deg,#f79009,#ffc46b)}
.b-pink{background:linear-gradient(135deg,#ee46bc,#ff8fd8)}
.b-teal{background:linear-gradient(135deg,#15b79e,#6fe0cd)}
.page-head{padding:54px 0 10px}
.page-head h1{font-size:clamp(26px,3.6vw,38px);margin:14px 0 10px;letter-spacing:-.02em}
.page-head p{color:var(--muted);max-width:640px;margin:0}
.crumbs{color:var(--muted2);font-size:13.5px}
.crumbs a{color:var(--muted)}
.panel{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:26px;
  box-shadow:var(--shadow);margin-top:26px}
.btn{display:inline-flex;align-items:center;gap:9px;padding:12px 22px;border-radius:11px;font-weight:620;
  font-size:15px;border:1px solid transparent;cursor:pointer;font-family:inherit}
.btn-primary{background:var(--violet);color:#fff}
.btn-primary:hover{background:#5b4bf0}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--violet);color:var(--violet)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.stats{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));margin-top:20px}
.stat{background:#fbfbfe;border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.stat span{display:block;color:var(--muted2);font-size:12.5px;text-transform:uppercase;letter-spacing:.08em}
.stat b{font-size:24px;letter-spacing:-.02em}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.arena{position:relative;margin-top:22px;border-radius:16px;border:1px solid var(--line);overflow:hidden;
  user-select:none;cursor:pointer}
.pad{height:340px;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:10px;
  background:#eef1f7;color:var(--muted);font-size:20px;font-weight:600;transition:background .06s linear}
.pad.wait{background:#eef1f7}
.pad.ready{background:#12b76a;color:#fff}
.pad.early{background:#f04438;color:#fff}
.pad .big{font-size:44px;font-weight:750;letter-spacing:-.02em;font-family:ui-monospace,Menlo,monospace}
.field{height:420px;position:relative;background:
  radial-gradient(circle at 50% 40%,#fbfbfe,#eef1f7);cursor:crosshair}
.target{position:absolute;border-radius:50%;background:linear-gradient(135deg,#12b76a,#5ce0a4);
  border:3px solid #fff;box-shadow:0 8px 20px -8px rgba(18,183,106,.9);cursor:pointer;
  transition:transform .07s ease}
.target:active{transform:scale(.92)}
.grid{display:grid;gap:12px;grid-template-columns:repeat(4,1fr);max-width:460px;margin:24px auto}
.cell{aspect-ratio:1;border-radius:14px;background:#eef1f7;border:1px solid var(--line);cursor:pointer;
  transition:background .12s ease,transform .12s ease}
.cell.on{background:var(--blue);transform:scale(1.03)}
.cell.ok{background:#12b76a}
.cell.bad{background:#f04438}
.textbox{border:1px solid var(--line);border-radius:14px;padding:20px;font-size:19px;line-height:1.9;
  background:#fbfbfe;user-select:none}
.textbox .w{padding:1px 3px;border-radius:5px;margin-right:5px}
.textbox .ok{background:#e6f7ef;color:#0b7a49}
.textbox .bad{background:#fde8e6;color:#b42318;text-decoration:underline}
.textbox .cur{background:#efeaff;box-shadow:inset 0 -2px 0 var(--violet)}
textarea,input{width:100%;padding:14px 15px;border:1px solid var(--line);border-radius:12px;font:inherit;
  font-size:17px;background:#fff;color:var(--ink);margin-top:16px}
textarea:focus,input:focus{outline:none;border-color:var(--violet);box-shadow:0 0 0 4px rgba(109,94,252,.12)}
.stroop-word{font-size:64px;font-weight:800;letter-spacing:.02em;text-align:center;padding:34px 0 26px;
  font-family:ui-monospace,Menlo,monospace}
.stroop-btns{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.sword{padding:16px;border-radius:12px;border:1px solid var(--line);background:#fff;font-weight:700;
  font-size:16px;cursor:pointer;font-family:inherit}
.sword:hover{border-color:var(--violet);color:var(--violet)}
.clickpad{height:380px;border-radius:16px;background:linear-gradient(135deg,#15b79e,#6fe0cd);color:#fff;
  display:flex;align-items:center;justify-content:center;flex-direction:column;cursor:pointer;user-select:none}
.clickpad .n{font-size:76px;font-weight:800;font-family:ui-monospace,Menlo,monospace;line-height:1}
table{width:100%;border-collapse:collapse;margin-top:8px}
th,td{text-align:left;padding:13px 12px;border-bottom:1px solid var(--line);font-size:15px}
th{color:var(--muted2);font-size:12.5px;text-transform:uppercase;letter-spacing:.08em}
.best{color:#0b7a49;font-weight:650}
.go{color:var(--violet);font-weight:620}
.hint{color:var(--muted2);font-size:13.5px;margin-top:14px}
.note{background:#f0f4ff;border:1px solid #d9e2ff;border-radius:14px;padding:16px 18px;color:#3b3f8f;font-size:15px}
footer{margin-top:40px;border-top:1px solid var(--line);background:#fff;padding:34px 0 46px;color:var(--muted);font-size:14px}
.frow{display:flex;gap:22px;justify-content:space-between;flex-wrap:wrap;align-items:center}
footer a{color:var(--muted)}
@media(max-width:640px){.pad{height:290px}.field{height:340px}.clickpad{height:300px}.hero{padding:52px 0 34px}}