:root{
  --bg:#f5f7fb;--card:#fff;--ink:#1c2333;--muted:#5b6478;--line:#e3e8f2;
  --brand:#4f46e5;--brand2:#7c3aed;--accent:#f59e0b;--ok:#16a34a;--bad:#dc2626;
  --radius:14px;--shadow:0 2px 10px rgba(28,35,51,.07);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.7;font-size:16px}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img,canvas,svg{max-width:100%}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}

/* Header & navigation */
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;min-height:60px;gap:12px}
.logo{font-weight:800;font-size:1.3rem;color:var(--ink);letter-spacing:-.02em}
.logo span{color:var(--brand)}
.logo:hover{text-decoration:none}
.nav{display:flex;gap:4px;align-items:center;flex-wrap:wrap}
.nav a{color:var(--ink);padding:8px 12px;border-radius:8px;font-weight:600;font-size:.95rem}
.nav a:hover,.nav a.on{background:#eef0ff;color:var(--brand);text-decoration:none}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:8px 12px;font-size:1.1rem;cursor:pointer}
@media(max-width:820px){
  .nav-toggle{display:block}
  .nav{display:none;position:absolute;top:60px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:8px 16px 12px}
  .nav.open{display:flex}
}
.crumbs{font-size:.85rem;color:var(--muted);padding:14px 0 4px}
.crumbs a{color:var(--muted)}

/* Hero */
.hero{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;padding:44px 0 40px}
.hero h1{margin:0 0 10px;font-size:clamp(1.7rem,4vw,2.5rem);line-height:1.2}
.hero p{margin:0;max-width:680px;opacity:.95;font-size:1.05rem}
.hero .cta{display:inline-block;margin-top:18px;background:#fff;color:var(--brand);padding:11px 22px;border-radius:999px;font-weight:700}
.hero .cta:hover{text-decoration:none;transform:translateY(-1px)}

/* Layout */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;padding:22px 0 40px}
@media(max-width:980px){.layout{grid-template-columns:1fr}}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);margin-bottom:20px}
.panel h2{margin-top:0;font-size:1.35rem}
.panel h3{font-size:1.1rem;margin:1.4em 0 .4em}
.sidebar .panel{padding:16px}
.sidebar h3{margin:0 0 10px;font-size:1rem}
.side-list{list-style:none;margin:0;padding:0}
.side-list li{border-bottom:1px solid var(--line)}
.side-list li:last-child{border:0}
.side-list a{display:flex;gap:10px;align-items:center;padding:9px 2px;color:var(--ink);font-weight:600;font-size:.95rem}
.side-list .ico{font-size:1.4rem;width:34px;text-align:center}

/* Game cards */
.section-title{font-size:1.4rem;margin:26px 0 14px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .15s,box-shadow .15s}
.card:hover{transform:translateY(-3px);box-shadow:0 8px 20px rgba(28,35,51,.12);text-decoration:none}
.card .thumb{height:120px;display:flex;align-items:center;justify-content:center;font-size:3.4rem;color:#fff}
.card .body{padding:14px;flex:1;display:flex;flex-direction:column;gap:6px}
.card h3{margin:0;font-size:1.05rem;color:var(--ink)}
.card p{margin:0;color:var(--muted);font-size:.9rem;line-height:1.5}
.tag{display:inline-block;font-size:.75rem;font-weight:700;background:#eef0ff;color:var(--brand);padding:2px 9px;border-radius:999px;width:fit-content}
.card-article h3 a{color:var(--ink)}

/* Game stage */
.game-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-bottom:12px}
.game-head h1{margin:0;font-size:clamp(1.4rem,3vw,1.9rem)}
.stage{background:#0f172a;border-radius:var(--radius);padding:14px;color:#e2e8f0;display:flex;flex-direction:column;align-items:center;gap:12px;min-height:320px}
.hud{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;width:100%}
.hud .stat{background:#1e293b;border-radius:10px;padding:6px 14px;font-weight:700;font-size:.95rem;min-width:84px;text-align:center}
.hud .stat small{display:block;font-weight:500;color:#94a3b8;font-size:.7rem;text-transform:uppercase;letter-spacing:.05em}
.stage canvas{background:#111c33;border-radius:10px;touch-action:none;display:block}
.stage .msg{min-height:1.4em;font-weight:600;text-align:center}
.btn{background:var(--brand);color:#fff;border:0;border-radius:10px;padding:10px 20px;font-size:.95rem;font-weight:700;cursor:pointer;font-family:inherit}
.btn:hover{background:#4338ca}
.btn.alt{background:#334155}
.btn.alt:hover{background:#475569}
.btn.sm{padding:7px 14px;font-size:.85rem}
.btn-row{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}
.dpad{display:grid;grid-template-columns:repeat(3,56px);grid-template-rows:repeat(2,56px);gap:6px;justify-content:center}
.dpad button{background:#334155;color:#fff;border:0;border-radius:12px;font-size:1.4rem;cursor:pointer;touch-action:manipulation}
.dpad button:active{background:var(--brand)}
.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}
.hint{font-size:.85rem;color:#94a3b8;text-align:center}

/* Ads (kept away from controls) */
.ad{margin:22px auto;text-align:center;clear:both}
.ad .label{font-size:.68rem;color:#94a3b8;text-transform:uppercase;letter-spacing:.08em;margin-bottom:4px}
.ad-box{min-height:100px;background:repeating-linear-gradient(45deg,#f1f4fa,#f1f4fa 10px,#e9edf6 10px,#e9edf6 20px);border:1px dashed #c5cde0;border-radius:10px;display:flex;align-items:center;justify-content:center;color:#8a94ab;font-size:.85rem}
.ad-top .ad-box,.ad-mid .ad-box,.ad-bottom .ad-box{min-height:90px}
.ad-side .ad-box{min-height:250px}
.ad.gap-game{margin-top:34px;margin-bottom:34px}

/* Article content */
.prose p{margin:.7em 0}
.prose ul,.prose ol{padding-left:1.3em}
.prose li{margin:.3em 0}
.prose details{border:1px solid var(--line);border-radius:10px;padding:10px 14px;margin:8px 0;background:#fafbff}
.prose summary{font-weight:700;cursor:pointer}
.meta{color:var(--muted);font-size:.88rem}
.cat-chips{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0}
.chip{border:1px solid var(--line);background:#fff;padding:7px 14px;border-radius:999px;font-weight:600;font-size:.9rem;color:var(--ink)}
.chip:hover,.chip.on{background:var(--brand);color:#fff;text-decoration:none;border-color:var(--brand)}
.share{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}

/* Footer */
.site-footer{background:#111827;color:#cbd5e1;padding:34px 0 22px;margin-top:20px}
.site-footer a{color:#cbd5e1}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px}
@media(max-width:700px){.foot-grid{grid-template-columns:1fr}}
.site-footer h4{color:#fff;margin:0 0 10px}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin:6px 0}
.copy{border-top:1px solid #243044;margin-top:22px;padding-top:14px;font-size:.85rem;color:#94a3b8;text-align:center}

/* Memory / quiz / word helpers */
.mem-grid{display:grid;gap:8px;width:100%;max-width:420px}
.mem-card{aspect-ratio:1;background:#334155;border:0;border-radius:10px;font-size:clamp(1.4rem,6vw,2.2rem);cursor:pointer;color:#fff;perspective:600px}
.mem-card.up{background:#fff;color:#111}
.mem-card.done{background:#16a34a;color:#fff}
.opt{display:block;width:100%;text-align:left;background:#1e293b;color:#e2e8f0;border:2px solid #334155;border-radius:10px;padding:11px 14px;margin:6px 0;font-size:1rem;cursor:pointer;font-family:inherit}
.opt:hover{border-color:var(--brand)}
.opt.right{background:#14532d;border-color:#16a34a}
.opt.wrong{background:#7f1d1d;border-color:#dc2626}
.qbox{width:100%;max-width:520px}
.qbox h3{margin:6px 0 10px;font-size:1.15rem;color:#fff}
.word{display:flex;gap:6px;justify-content:center;flex-wrap:wrap;font-size:1.8rem;font-weight:800;letter-spacing:.15em}
.word span{display:inline-block;width:1.4em;border-bottom:3px solid #64748b;text-align:center;min-height:1.3em}
.keys{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;max-width:520px}
.keys button{width:38px;height:42px;background:#334155;color:#fff;border:0;border-radius:8px;font-weight:700;cursor:pointer;font-family:inherit}
.keys button:disabled{opacity:.3;cursor:default}
.ttt{display:grid;grid-template-columns:repeat(3,92px);gap:8px}
.ttt button{width:92px;height:92px;background:#1e293b;border:0;border-radius:12px;font-size:2.6rem;font-weight:800;cursor:pointer;color:#fff}
.ttt button.x{color:#38bdf8}
.ttt button.o{color:#fbbf24}
.ttt button.win{background:#14532d}
.mines{display:grid;gap:2px;background:#0b1220;padding:2px;border-radius:8px}
.mines button{width:32px;height:32px;border:0;background:#475569;color:#fff;font-weight:800;border-radius:4px;cursor:pointer;font-size:.95rem;padding:0;font-family:inherit}
.mines button.open{background:#1e293b;cursor:default}
.mines button.boom{background:#dc2626}
.mole-grid{display:grid;grid-template-columns:repeat(3,92px);gap:10px}
.mole-grid button{width:92px;height:92px;border-radius:50%;border:0;background:#3f2d1d;font-size:2.4rem;cursor:pointer;box-shadow:inset 0 -8px 0 #2a1d12}
@media(max-width:420px){
  .ttt{grid-template-columns:repeat(3,80px)}.ttt button{width:80px;height:80px}
  .mines button{width:28px;height:28px}
  .mole-grid{grid-template-columns:repeat(3,80px)}.mole-grid button{width:80px;height:80px}
}