:root{--bg:#f6f9ff;--ink:#14213d;--muted:#56627a;--blue:#1668e3;--blue-d:#0f55bd;--line:#e2e9f5;--card:#fff;--radius:16px;--shadow:0 4px 18px rgba(30,70,140,.08)}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.2;margin:0 0 .5rem;letter-spacing:-.01em}
img,svg{max-width:100%}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}
.section{padding-top:28px;padding-bottom:12px}.mt{margin-top:36px}

/* header */
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.header-in{display:flex;align-items:center;gap:18px;min-height:68px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink)}.brand:hover{text-decoration:none}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text b{font-size:1.55rem;font-weight:800;color:#12308a;letter-spacing:-.02em}.brand-text b span{color:var(--blue)}
.brand-text small{font-size:.78rem;color:var(--muted)}
.main-nav{display:flex;gap:2px;margin-left:auto;flex-wrap:wrap}
.main-nav a{color:var(--ink);font-size:.9rem;font-weight:500;padding:22px 10px 19px;border-bottom:3px solid transparent;white-space:nowrap}
.main-nav a:hover{text-decoration:none;color:var(--blue)}
.main-nav a[aria-current=page]{color:var(--blue);border-bottom-color:var(--blue)}
.nav-toggle{position:absolute;opacity:0;pointer-events:none}
.burger{display:none;margin-left:auto;width:44px;height:44px;border-radius:10px;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.burger i{display:block;width:22px;height:2.5px;background:var(--blue);border-radius:2px}
.nav-toggle:focus-visible+.burger{outline:3px solid #9cc2ff}
@media(max-width:1000px){
  .burger{display:flex}
  .main-nav{display:none;flex-basis:100%;flex-direction:column;margin:0 0 10px;border-top:1px solid var(--line)}
  .nav-toggle:checked~.main-nav{display:flex}
  .main-nav a{padding:13px 4px;border-bottom:1px solid var(--line);font-size:1rem}
  .main-nav a[aria-current=page]{border-bottom-color:var(--line);font-weight:700}
}

/* hero */
.hero{background:linear-gradient(180deg,#eaf3ff,#f6f9ff);padding:44px 0 36px}
.hero-in{display:flex;align-items:center;justify-content:space-between;gap:24px}
.hero h1{font-size:clamp(1.9rem,5vw,3rem);font-weight:800;color:#0d1b3d}
.hero h1 em{font-style:normal;color:var(--blue)}
.hero p{color:#33405a;font-size:1.1rem;max-width:560px}
.hero-art{width:min(42%,380px);flex:none}
.hero-sm{padding:20px 0 24px}.hero-sm h1{font-size:clamp(1.8rem,5vw,2.7rem)}.hero-sm .lead{max-width:760px;margin:.3rem 0 0}
@media(max-width:700px){.hero-art{display:none}.hero{padding:28px 0 24px}}
.crumbs{display:flex;gap:8px;flex-wrap:wrap;font-size:.9rem;margin-bottom:12px;color:var(--muted)}
.tags{margin:14px 0 0;display:flex;gap:8px;flex-wrap:wrap}
.tag{background:#fff;border:1px solid var(--line);border-radius:999px;padding:3px 12px;font-size:.82rem;color:#33405a}
.tag-blue{background:#e4efff;color:#0e4fb0;border-color:#cfe1ff}.tag-green{background:#e2f6ea;color:#1b7a43;border-color:#c8ecd6}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--blue);color:#fff;border:0;border-radius:10px;padding:11px 20px;font:600 1rem/1.2 inherit;cursor:pointer;min-height:44px;font-family:inherit}
.btn:hover{background:var(--blue-d);text-decoration:none;color:#fff}
.btn:focus-visible{outline:3px solid #9cc2ff;outline-offset:2px}
.btn-lg{padding:14px 24px;margin-top:10px}.btn-block{display:flex;width:100%}
.btn-ghost{background:#fff;color:var(--blue);border:1.5px solid #bcd3f7}.btn-ghost:hover{background:#eef5ff;color:var(--blue-d)}

/* sections / cards */
.section-head{margin-bottom:16px}.section-head h2{font-size:1.5rem;margin:0}.section-head p{margin:2px 0 0;color:var(--muted)}
.grid{display:grid;gap:18px}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-6{grid-template-columns:repeat(6,1fr);gap:12px}.grid-5{grid-template-columns:repeat(5,1fr);gap:12px}
@media(max-width:900px){.grid-3{grid-template-columns:1fr 1fr}.grid-6,.grid-5{grid-template-columns:repeat(3,1fr)}}
@media(max-width:600px){.grid-3,.grid-2{grid-template-columns:1fr}.grid-6,.grid-5{grid-template-columns:1fr 1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.game-card{overflow:hidden;display:flex;flex-direction:column}
.thumb{display:block;aspect-ratio:16/9;background:#eee}.thumb-svg{display:block;width:100%;height:100%}
.card-body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:6px;flex:1}
.card-body h3{font-size:1.2rem;margin:0}.card-body h3 a{color:var(--ink)}
.card-body p{margin:0 0 8px;color:var(--muted);flex:1}
.pill{align-self:flex-start;font-size:.75rem;font-weight:600;padding:2px 10px;border-radius:999px;background:#e4efff;color:#0e4fb0}
.pill-ugyessegi-jatekok{background:#dff5e8;color:#17703d}.pill-gyerekjatekok{background:#ffe3e3;color:#b3302f}
.cat-card{display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px;padding:16px 8px;color:var(--ink)}
.cat-card:hover{text-decoration:none;transform:translateY(-2px)}
.cat-card small{color:var(--muted);font-size:.78rem}
.cat-icon{width:56px;height:56px;display:block}.cat-icon svg{width:100%;height:100%}
.cat-logikai-jatekok{background:#fff2f5}.cat-mahjong-jatekok{background:#eefaf0}.cat-kartyajatekok{background:#fff6ec}
.cat-ugyessegi-jatekok{background:#edf5ff}.cat-szojatekok{background:#fffbe8}.cat-gyerekjatekok{background:#f3eefe}
.perks{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;background:#eef4fd;border-radius:var(--radius);padding:18px}
.perks div{display:flex;flex-direction:column}.perks span{color:var(--muted);font-size:.92rem}
@media(max-width:700px){.perks{grid-template-columns:1fr}}

/* two col, notes */
.two-col{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:24px;align-items:start}
@media(max-width:900px){.two-col{grid-template-columns:1fr}}
.side{display:flex;flex-direction:column;gap:16px}
.note{background:#e9f2ff;border-radius:var(--radius);padding:16px 18px}.note-green{background:#e8f7ee}
.note h2{font-size:1.1rem}.note h3{font-size:.98rem;margin-top:14px}.note p{margin:.2rem 0;color:#33405a;font-size:.95rem}
.checks{list-style:none;margin:0;padding:0}.checks li{padding:3px 0 3px 26px;position:relative;font-size:.95rem}
.checks li::before{content:"✓";position:absolute;left:0;color:#fff;background:#2fa866;border-radius:50%;width:18px;height:18px;font-size:12px;line-height:18px;text-align:center;top:6px}
.controls{margin:0;font-size:.95rem}.controls dt{font-weight:700;margin-top:6px}.controls dd{margin:0;color:#33405a}
.empty{background:#fff;border:1px dashed #b8cbe8;border-radius:var(--radius);padding:28px;text-align:center}
.empty h2{font-size:1.4rem}.empty p{color:var(--muted)}
.back{margin:28px 0 8px}
.prose{max-width:760px}.prose h2{font-size:1.25rem;margin-top:1.4rem}.noscript{background:#fff3cd;padding:10px 16px;border-radius:8px}

/* footer */
.site-footer{margin-top:40px;border-top:1px solid var(--line);background:#fff;padding-top:28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:24px}
@media(max-width:700px){.footer-grid{grid-template-columns:1fr}}
.footer-brand{font-size:1.4rem;color:#12308a}.footer-brand span{color:var(--blue)}
.site-footer h2{font-size:.95rem;margin-bottom:8px}.site-footer ul{list-style:none;margin:0;padding:0}.site-footer li{padding:2px 0}
.site-footer li a,.site-footer p{color:var(--muted);font-size:.92rem}
.footer-bottom{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;border-top:1px solid var(--line);margin-top:22px;padding-top:14px;padding-bottom:18px;font-size:.82rem;color:var(--muted)}

/* game panel (shared) */
.game-wrap{min-width:0}
.panel{background:#fbf6ee;border:1px solid #eadfcd;border-radius:20px;padding:16px;box-shadow:var(--shadow);position:relative;max-width:560px;margin:0 auto}
.bar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.bar .name{font-size:1.9rem;font-weight:800;color:#776e65;margin-right:auto;line-height:1}
.box{background:#d9cdbc;color:#fff;border-radius:10px;padding:5px 12px;text-align:center;min-width:68px}
.box span{display:block;font-size:.68rem;text-transform:uppercase;color:#f3ead8;letter-spacing:.04em}.box b{font-size:1.15rem}
.overlay{position:absolute;inset:0;border-radius:inherit;background:rgba(246,249,255,.9);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;text-align:center;padding:16px;z-index:5}
.overlay[hidden]{display:none}.overlay h2{font-size:1.7rem;margin:0}.overlay p{margin:0;color:#33405a}
.overlay .row{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.stage{position:relative}

/* 2048 */
.b2048{display:grid;grid-template-columns:repeat(4,1fr);gap:2.6%;background:#bbada0;border-radius:12px;padding:2.6%;aspect-ratio:1;touch-action:none;user-select:none;-webkit-user-select:none}
.t{border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:clamp(1.3rem,7vw,2.3rem);background:rgba(238,228,218,.4);color:#776e65}
.t.pop{animation:pop .18s ease-out}@keyframes pop{0%{transform:scale(.6)}100%{transform:scale(1)}}
.v2{background:#eee4da}.v4{background:#ede0c8}.v8{background:#f2b179;color:#fff}.v16{background:#f59563;color:#fff}.v32{background:#f67c5f;color:#fff}
.v64{background:#f65e3b;color:#fff}.v128{background:#edcf72;color:#fff;font-size:clamp(1.1rem,6vw,2rem)}.v256{background:#edcc61;color:#fff;font-size:clamp(1.1rem,6vw,2rem)}
.v512{background:#edc850;color:#fff;font-size:clamp(1.1rem,6vw,2rem)}.v1024{background:#edc53f;color:#fff;font-size:clamp(1rem,5vw,1.7rem)}
.v2048{background:#edc22e;color:#fff;font-size:clamp(1rem,5vw,1.7rem)}.vbig{background:#3c3a32;color:#fff;font-size:clamp(.9rem,4.4vw,1.5rem)}
@media(prefers-reduced-motion:reduce){.t.pop{animation:none}.mcard{transition:none!important}}

/* snake */
.snake-panel{background:#eef4fd;border-color:#d6e3f6}
.snake-panel .name{color:#12308a}.snake-panel .box{background:#2f7bf5}
.canvas-wrap{position:relative;border-radius:12px;overflow:hidden;background:#0f2233;aspect-ratio:1}
.canvas-wrap canvas{display:block;width:100%;height:100%;touch-action:none}
.dpad{display:none;grid-template-columns:repeat(3,64px);grid-template-rows:repeat(2,56px);gap:8px;justify-content:center;margin-top:14px}
.dpad button{border:0;border-radius:12px;background:#2f7bf5;color:#fff;font-size:1.5rem;cursor:pointer;touch-action:manipulation}
.dpad button:active{background:var(--blue-d)}
.dpad .up{grid-column:2;grid-row:1}.dpad .left{grid-column:1;grid-row:2}.dpad .down{grid-column:2;grid-row:2}.dpad .right{grid-column:3;grid-row:2}
@media(pointer:coarse),(max-width:820px){.dpad{display:grid}}

/* memory */
.mem-panel{background:#f3eefe;border-color:#e0d4fa}.mem-panel .name{color:#4b2fa0}.mem-panel .box{background:#7d55d6}
.mgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.mcard{aspect-ratio:1;border:0;padding:0;background:none;cursor:pointer;perspective:600px;-webkit-tap-highlight-color:transparent}
.mcard:focus-visible{outline:3px solid #9cc2ff;border-radius:12px}
.mcard .in{display:block;position:relative;width:100%;height:100%;transition:transform .35s;transform-style:preserve-3d}
.mcard.on .in{transform:rotateY(180deg)}
.mcard .f,.mcard .b{position:absolute;inset:0;border-radius:12px;backface-visibility:hidden;-webkit-backface-visibility:hidden;display:flex;align-items:center;justify-content:center}
.mcard .b{background:#7d55d6;color:#fff;font-size:2rem;font-weight:800;box-shadow:inset 0 0 0 3px #a98af0}
.mcard .f{background:#fff;transform:rotateY(180deg);box-shadow:inset 0 0 0 3px #e0d4fa}.mcard .f svg{width:62%;height:62%}
.mcard.done .f{box-shadow:inset 0 0 0 4px #3ec96a;background:#f1fff6}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
@media(max-width:600px){
  .hero-sm .lead{font-size:1rem}.hero-sm .tags{display:none}.hero-sm{padding-bottom:14px}.section{padding-top:18px}
  .panel{padding:12px}.bar .name{font-size:1.5rem}
}