*{box-sizing:border-box} :root{color-scheme:dark;--bg:#0c101b;--panel:#141b2a;--line:#293044;--muted:#a0adc2;--text:#edf3ff;--accent:#9b8aff}body{margin:0;background:radial-gradient(ellipse at 70% -15%,#252143 0,transparent 50%),var(--bg);color:var(--text);font-family:"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.65;min-height:100vh}a{color:inherit;text-decoration:none}button,select{font:inherit}button,a,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.45}button:focus-visible,a:focus-visible,select:focus-visible{outline:3px solid var(--accent);outline-offset:4px}.wrap{width:min(1160px,calc(100% - 48px));margin:auto}.topbar{min-height:86px;display:flex;justify-content:space-between;align-items:center;gap:15px;border-bottom:1px solid var(--line)}.brand{font-weight:800;letter-spacing:2px;font-size:16px;display:flex;gap:10px;align-items:center}.brand-dot{width:9px;height:9px;border-radius:50%;background:#b2a1ff;box-shadow:0 0 22px #9b8aff}.navlink{font-size:13px;color:var(--muted)}.navlink:hover{color:#fff}.hero{padding:62px 0 42px}.eyebrow{color:#b5a5ff;font-size:11px;letter-spacing:3px;font-weight:700;margin:0 0 16px}h1{font-size:clamp(32px,5vw,56px);line-height:1.25;letter-spacing:-1.5px;margin:0 0 16px}h1 span{color:#b5a5ff}.hero p:not(.eyebrow){color:var(--muted);font-size:16px}.hero-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:25px}.chips{display:flex;gap:8px;flex-wrap:wrap}.chip{font-size:11px;border:1px solid var(--line);border-radius:20px;padding:5px 11px;color:#b7c4da}.count{font-size:12px;color:var(--muted)}.game-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin-bottom:55px}.game-card{border:1px solid var(--line);background:var(--panel);border-radius:18px;overflow:hidden;transition:transform .18s,border-color .18s}.game-card:hover{transform:translateY(-5px);border-color:var(--accent)}.cover{height:170px;position:relative;display:grid;place-items:center;background:radial-gradient(ellipse at center,color-mix(in srgb,var(--accent) 20%,transparent),transparent 70%),repeating-linear-gradient(0deg,transparent 0 29px,#ffffff05 30px),repeating-linear-gradient(90deg,transparent 0 29px,#ffffff05 30px),#101724}.cover svg{width:170px;height:130px;overflow:visible;color:var(--accent);filter:drop-shadow(0 0 15px color-mix(in srgb,var(--accent) 30%,transparent))}.cover .category{position:absolute;top:15px;left:16px;font-size:10px;letter-spacing:1px;color:var(--accent);background:#0c101b99;padding:3px 9px;border:1px solid #ffffff15;border-radius:6px}.card-body{padding:21px}.card-body h2{font-size:21px;margin:0 0 7px}.card-body p{font-size:13px;color:var(--muted);margin:0 0 20px;min-height:44px}.card-foot{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--accent)}.card-foot small{font-size:9px;letter-spacing:1.4px;color:#98a5bc}footer{border-top:1px solid var(--line);padding:24px 0 30px;color:var(--muted);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:11px}footer a:hover{text-decoration:underline}.game-heading{padding:30px 0 22px;display:flex;align-items:center;justify-content:space-between;gap:20px}.game-heading h1{font-size:30px;letter-spacing:0;margin:0}.game-heading .eyebrow{margin:0 0 5px;font-size:10px;color:var(--accent)}.game-layout{display:grid;grid-template-columns:minmax(0,720px) minmax(240px,1fr);gap:26px;align-items:start;margin-bottom:40px}.play-panel{border:1px solid var(--line);border-radius:18px;background:#111725;overflow:hidden}.hud{display:flex;gap:12px;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line)}.stats{display:flex;gap:25px}.stat label{font-size:10px;color:var(--muted);display:block}.stat strong{font-size:23px;font-variant-numeric:tabular-nums;line-height:1.3;display:block}.mini-button{border:1px solid var(--line);background:#1d2638;color:var(--text);padding:7px 12px;border-radius:8px;font-size:12px}.stage{position:relative;display:flex;justify-content:center;align-items:center;min-height:280px;background:#090f1c;overflow:hidden}.stage canvas{display:block;width:auto;height:auto;max-width:100%;max-height:65vh;touch-action:none;outline:none}.overlay{position:absolute;inset:0;z-index:2;display:flex;align-items:center;justify-content:center;padding:24px;background:#080d1dcc;backdrop-filter:blur(5px)}.overlay[hidden]{display:none}.overlay-card{text-align:center;max-width:310px}.overlay-icon{font-size:40px;color:var(--accent);margin-bottom:12px}.overlay h2{font-size:26px;margin:0 0 12px}.overlay p{font-size:13px;color:#c3cee0;margin:0 0 24px}.primary{border:0;border-radius:10px;background:var(--accent);color:#101521;padding:12px 25px;font-weight:750;font-size:14px}.primary:hover{filter:brightness(1.12)}.controls{display:flex;justify-content:center;gap:9px;padding:15px;flex-wrap:wrap;border-top:1px solid var(--line)}.control{touch-action:none;user-select:none;min-width:49px;min-height:44px;border:1px solid #38415b;background:#1b2437;border-radius:10px;color:#edf3ff;font-size:13px;font-weight:650}.control:active,.control.pressed{background:var(--accent);color:#111624}.controls:empty{display:none}.info-card{padding:24px;background:var(--panel);border:1px solid var(--line);border-radius:16px;margin-bottom:15px}.info-card h2{font-size:14px;margin:0 0 12px}.info-card p{font-size:13px;color:var(--muted);margin:0;line-height:1.9}.info-card .detail{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);color:var(--accent);min-height:44px}.side-games{display:grid;gap:8px}.side-games a{display:flex;justify-content:space-between;padding:9px 0;font-size:12px;border-bottom:1px solid var(--line)}.side-games a:last-child{border:0}.storage-note{font-size:11px;color:var(--muted);padding:0 5px}.game-note{padding:0 20px 14px;font-size:11px;color:var(--muted)}.board2048{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;background:#111827;padding:14px;width:min(100%,470px);aspect-ratio:1;touch-action:none}.tile{display:grid;place-items:center;border-radius:9px;background:#202b3e;font-size:clamp(23px,5vw,38px);font-weight:800;line-height:1;color:#f4f6fc}.tile[data-value="2"]{background:#cde5e1;color:#23463c}.tile[data-value="4"]{background:#8fc9bb;color:#15382f}.tile[data-value="8"]{background:#86b9eb;color:#19374e}.tile[data-value="16"]{background:#9c98ed}.tile[data-value="32"]{background:#c384d9}.tile[data-value="64"]{background:#df819a}.tile[data-value="128"]{background:#ec9c5d}.tile[data-value="256"]{background:#e8b543;color:#392a08}.tile[data-value="512"]{background:#dac943;color:#392e08}.tile[data-value="1024"],.tile[data-value="2048"]{background:#f1dd6d;color:#30270a;box-shadow:0 0 17px #f1dd6d45;font-size:29px}.tile.big{background:#c9a9ff;color:#2b1948;font-size:24px}.hanoi-wrap{width:100%;padding:22px 16px}.hanoi-options{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin-bottom:15px}.hanoi-options select{background:#1a2437;color:#fff;padding:7px 10px;border:1px solid var(--line);border-radius:7px}.rods{display:flex;align-items:end;gap:12px;height:265px}.rod{position:relative;height:100%;flex:1;min-width:0;background:transparent;border:0;border-bottom:8px solid #405272;border-radius:5px;color:var(--muted);display:flex;flex-direction:column-reverse;align-items:center;padding:0 2px 7px;gap:5px;touch-action:manipulation}.rod:before{content:"";width:6px;background:#405272;height:85%;position:absolute;bottom:0;left:calc(50% - 3px);border-radius:5px}.rod.selected{border-bottom-color:var(--accent);background:#83b9ff0a}.disc{position:relative;height:24px;min-height:24px;border-radius:6px;z-index:1;background:hsl(var(--hue) 65% 62%);color:#122235;font-weight:700;font-size:11px;display:grid;place-items:center;box-shadow:inset 0 -3px #0002}.rod-labels{display:flex;text-align:center;font-size:12px;color:var(--muted);margin:12px 0}.rod-labels span{flex:1}.hanoi-message{text-align:center;min-height:48px;font-size:13px;color:#ccdafa;margin:15px 0 0}.hanoi-stage{min-height:440px}noscript{display:block;padding:30px;color:#fff}@media(max-width:900px){.game-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.game-layout{grid-template-columns:minmax(0,1fr) 240px;gap:18px}.info-card{padding:18px}.wrap{width:calc(100% - 32px)}}@media(max-width:700px){.game-layout{grid-template-columns:1fr}.game-heading{padding-top:23px}.game-heading h1{font-size:26px}.stage canvas{max-height:57vh}.hero{padding-top:42px}.game-grid{gap:15px}.cover{height:135px}.cover svg{width:135px;height:105px}.card-body{padding:16px}.card-body h2{font-size:19px}.card-foot small{display:none}.info-card{margin-bottom:12px}.topbar{min-height:70px}.brand{font-size:13px;letter-spacing:1px}.navlink{font-size:12px}.hero-bottom{align-items:flex-start;flex-direction:column}.hero p:not(.eyebrow){font-size:14px}.stats{gap:18px}.hud{padding:13px 15px}.rods{gap:7px;height:240px}.board2048{max-width:430px;gap:8px;padding:12px}.game-note{font-size:10px}footer{flex-direction:column}}@media(max-width:360px){.game-grid{grid-template-columns:1fr}.tile{font-size:25px}}@media(prefers-reduced-motion:reduce){.game-card{transition:none}}
/* Keep empty and occupied 2048 cells at identical dimensions. */
.board2048{grid-template-rows:repeat(4,minmax(0,1fr))}.tile{min-width:0;min-height:0}#game-mount:focus{outline:none}#game-mount:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}