:root{--bg:#101319;--surface:#191d25;--surface-2:#20252f;--line:#303641;--muted:#9ba3b2;--text:#f3f5f7;--lime:#c3f653;--coral:#ff9678;--blue:#8baaff;--font:'Avenir Next','Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;--display:'Trebuchet MS','Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;color-scheme:dark}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:1rem/1.6 var(--font);-webkit-font-smoothing:antialiased}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer;color:inherit}button:disabled{cursor:default}button:focus-visible,a:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--lime);outline-offset:4px}button[hidden],[hidden]{display:none!important}a{color:inherit;text-decoration:none}button{touch-action:manipulation}.site-header{max-width:1424px;margin:auto;min-height:100px;padding:26px 48px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:13px;font:700 1.2rem/1 var(--display);letter-spacing:.04em}.brand-mark{display:grid;place-items:center;width:35px;height:35px;border-radius:10px;background:var(--lime);color:var(--bg);font-size:1.55rem;font-weight:700;transform:rotate(-7deg)}.brand-play{color:var(--lime);margin-left:8px;font-weight:400}.header-label{color:var(--muted);font-size:.875rem;letter-spacing:.08em}.layout{max-width:1340px;margin:0 auto;padding:48px 36px 36px;display:grid;grid-template-columns:270px minmax(0,1fr);gap:54px}.eyebrow{color:var(--lime);font:.75rem/1.4 var(--display);letter-spacing:.2em}.library-heading h1{margin:7px 0 5px;font-size:2.65rem;letter-spacing:-.06em;line-height:1.3}.title-dot{color:var(--lime);margin-left:3px}.library-heading p{color:var(--muted);margin:0 0 26px;font-size:.9rem}.game-list{display:grid;gap:10px}.game-card{border:1px solid var(--line);background:transparent;border-radius:14px;width:100%;display:flex;gap:14px;align-items:center;padding:15px 14px;text-align:left;transition:background .2s,border-color .2s,transform .2s}.game-card:hover{background:var(--surface);transform:translateX(3px)}.game-card.active{background:var(--lime);color:var(--bg);border-color:var(--lime)}.game-icon{width:49px;height:49px;display:grid;place-items:center;border-radius:12px;background:var(--surface-2);font:700 1.35rem/1 var(--display);color:var(--card-color,var(--lime));flex-shrink:0}.game-icon.icon-2048{font-size:1.05rem}.active .game-icon{background:#101319;color:var(--lime)}.game-card h3{margin:0;font-size:1rem;font-weight:600}.game-card small{display:block;color:var(--muted);font-size:.8125rem;margin-top:3px}.active small{color:#3d4f22}.game-card .card-index{margin-left:auto;font:400 .75rem var(--display);opacity:.5}.library-note{margin-top:26px;display:flex;gap:12px;align-items:center}.library-note p{font-size:.8125rem;color:var(--muted);line-height:1.9;margin:0}.note-line{height:40px;width:3px;background:var(--line);border-radius:2px}.arcade{min-width:0;background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:30px 32px 20px;position:relative}.arcade-head{display:flex;justify-content:space-between;align-items:center;gap:12px}.game-kicker{display:flex;gap:14px;align-items:center;color:var(--muted);font-size:.8125rem}.game-kicker span+span{font:.75rem var(--display);letter-spacing:.06em;color:#707c8f}.arcade-head h2{font:600 2.55rem/1.2 var(--display);letter-spacing:-.04em;margin:6px 0 0}.score-card{text-align:right;min-width:84px}.score-card span{color:var(--muted);font-size:.75rem;display:block}.score-card strong{font:500 1.9rem/1.2 var(--display);display:block;color:var(--lime);margin-top:4px;font-variant-numeric:tabular-nums}.game-toolbar{margin:22px 0 18px;display:flex;align-items:center;justify-content:space-between;gap:14px}.game-toolbar p{font-size:.875rem;color:var(--muted);margin:0}.toolbar-buttons{display:flex;gap:8px;flex-shrink:0}.button{border-radius:9px;border:1px solid var(--line);padding:9px 14px;font-size:.875rem;line-height:1.4;background:var(--surface-2);white-space:nowrap}.button:hover{border-color:#727d8d}.button-outline{background:transparent}.button-quiet{border-color:transparent;color:var(--muted)}.button-primary{background:var(--lime);color:var(--bg);border:none;font-weight:700;padding:13px 24px}.button-primary:hover{background:#d1ff72}.stage-frame{background:#12161d;border:1px solid var(--line);border-radius:16px;padding:26px;position:relative;overflow:hidden}.stage{width:100%;max-width:432px;margin:auto;aspect-ratio:1;position:relative;display:flex;align-items:center;justify-content:center}.frame-notch{position:absolute;top:0;left:26px;width:54px;height:3px;background:var(--lime)}.game-bottom{display:flex;justify-content:space-between;gap:18px;margin-top:19px;align-items:flex-start;min-height:42px}.instructions{display:flex;gap:13px;align-items:flex-start}.instruction-label{font-size:.75rem;color:var(--lime);border:1px solid #44512f;border-radius:4px;padding:1px 6px;flex-shrink:0}.instructions p{font-size:.875rem;color:var(--muted);margin:0;line-height:1.8}.game-status{font-size:.8125rem;color:var(--coral);text-align:right;max-width:40%}.site-footer{max-width:1340px;margin:0 auto;padding:20px 36px 28px;display:flex;justify-content:space-between;gap:18px;color:#788494;font-size:.75rem;letter-spacing:.035em}.footer-number{color:var(--lime);font-family:var(--display)}.tile-board{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;width:100%;height:100%;touch-action:none;padding:10px;border-radius:14px;background:#292e39}.number-tile{display:flex;align-items:center;justify-content:center;border-radius:9px;background:#363d49;color:#f5f5f0;font:600 clamp(1.25rem,3vw,2.3rem)/1 var(--display);font-variant-numeric:tabular-nums;transition:background .1s}.number-tile[data-value="2"]{background:#dfe4d6;color:#343e31}.number-tile[data-value="4"]{background:#c6d9ab;color:#2c3828}.number-tile[data-value="8"]{background:#b4dd65;color:#273b17}.number-tile[data-value="16"]{background:#c3f653;color:#253916}.number-tile[data-value="32"]{background:#f3d15b;color:#574013}.number-tile[data-value="64"]{background:#ffaa61;color:#592a18}.number-tile[data-value="128"]{background:#ff896c;color:#4e2319}.number-tile[data-value="256"]{background:#eb678e;color:#fff}.number-tile[data-value="512"]{background:#9f81ff;color:#fff}.number-tile[data-value="1024"]{background:#758fff;color:#fff}.number-tile[data-value="2048"]{background:#c3f653;color:#101319}.number-tile[data-value="0"]{font-size:0}.number-tile.big{font-size:clamp(1rem,2.8vw,1.8rem)}.number-tile.spawn{animation:pop .16s ease-out}.game-overlay{position:absolute;inset:0;background:#11161de8;backdrop-filter:blur(4px);z-index:2;border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:20px;text-align:center}.game-overlay h3{font:600 1.9rem/1.3 var(--display);margin:0}.game-overlay p{margin:0 0 6px;color:#b2bdcb;font-size:.9375rem}.overlay-symbol{font:500 3.5rem var(--display);color:var(--lime);line-height:1.2;margin-bottom:5px}.game-canvas{display:block;width:100%;height:100%;border-radius:10px;touch-action:none}.dpad{display:grid;grid-template-columns:repeat(3,48px);grid-template-rows:repeat(2,45px);gap:6px;justify-content:center;margin:18px auto 0}.dpad button{border:1px solid #404a59;background:var(--surface-2);border-radius:10px;font-size:1.25rem}.dpad button[data-direction="up"]{grid-column:2}.dpad button[data-direction="left"]{grid-column:1;grid-row:2}.dpad button[data-direction="down"]{grid-column:2;grid-row:2}.dpad button[data-direction="right"]{grid-column:3;grid-row:2}.memory-board{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;width:100%;height:100%}.memory-card{border:1px solid #364252;border-radius:10px;background:#252d39;position:relative;display:grid;place-items:center;transition:transform .22s,background .22s;color:#66778e;font:500 2rem var(--display)}.memory-card:hover{border-color:#788ea8}.memory-card.flipped{background:#3c4655;color:var(--text);transform:rotateY(0)}.memory-card.matched{background:#253c27;border-color:#607d43;cursor:default}.memory-card .face{font-size:2.25rem;line-height:1}.ttt-board{width:100%;height:100%;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.ttt-cell{border:1px solid #3d4757;border-radius:14px;background:#242b37;font:500 clamp(2.5rem,7vw,4.7rem)/1 var(--display);display:grid;place-items:center;color:var(--lime)}.ttt-cell[data-mark="O"]{color:var(--coral)}.ttt-cell:enabled:hover{background:#303b4a}.ttt-cell.winning{background:#33431f;border-color:var(--lime)}.reaction-pad{width:100%;height:100%;border:1px solid #3d4858;background:#273142;border-radius:14px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;padding:26px;text-align:center;touch-action:manipulation}.reaction-pad .reaction-symbol{font:600 4.7rem/1.15 var(--display);color:var(--blue)}.reaction-pad strong{font-size:1.55rem;line-height:1.5}.reaction-pad small{color:#acb8c9;font-size:.875rem}.reaction-pad.waiting{background:#47322e;border-color:#8a5240}.reaction-pad.waiting .reaction-symbol{color:var(--coral)}.reaction-pad.ready{background:var(--lime);border-color:var(--lime);color:#172010}.reaction-pad.ready .reaction-symbol{color:#172010}.reaction-pad.ready small{color:#324c20}.reaction-pad.result{background:#263a45}.reaction-history{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:14px;font-size:.8125rem;color:var(--muted)}.reaction-history span{background:var(--surface-2);padding:4px 9px;border-radius:6px}.mobile-controls{margin:auto}.mobile-controls p{font-size:.75rem;text-align:center;color:var(--muted);margin:6px 0}.legend-inline{display:flex;gap:18px;font-size:.8125rem;color:var(--muted);justify-content:center;margin:14px 0 0}.legend-inline b{color:var(--lime)}.legend-inline span+span b{color:var(--coral)}@keyframes pop{from{transform:scale(.7);opacity:.4}to{transform:scale(1);opacity:1}}@media(min-width:1200px){.stage{max-width:432px}.arcade{padding:32px 40px 23px}.layout{gap:62px}}@media(max-width:1000px){.layout{gap:28px;grid-template-columns:226px minmax(0,1fr);padding:32px 24px}.arcade{padding:25px 23px 18px}.stage-frame{padding:18px}.site-header{padding:24px 28px}.game-toolbar{align-items:flex-start;flex-direction:column;gap:12px}.toolbar-buttons{align-self:flex-end;margin-top:-4px}.library-heading h1{font-size:2.3rem}.game-card{padding:12px 10px;gap:10px}.game-icon{width:43px;height:43px}.game-card .card-index{display:none}.game-bottom{flex-direction:column;gap:9px}.game-status{max-width:100%;text-align:left}.site-footer{padding:10px 24px 24px}}@media(max-width:720px){.site-header{min-height:74px;padding:18px 20px}.header-label{font-size:.75rem;letter-spacing:0}.layout{display:flex;flex-direction:column;padding:24px 16px 16px;gap:23px}.library-heading{display:flex;align-items:baseline;gap:10px;margin-bottom:16px;flex-wrap:wrap}.library-heading .eyebrow{display:none}.library-heading h1{font-size:1.65rem;letter-spacing:-.045em;margin:0}.library-heading p{font-size:.8125rem;margin:0 0 0 auto}.game-list{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.game-card{padding:10px 8px;gap:7px;border-radius:12px;flex-direction:column;text-align:center;min-width:0}.game-card h3{font-size:.875rem}.game-card small{font-size:.75rem;line-height:1.3;margin-top:4px}.game-icon{width:35px;height:35px;border-radius:8px;font-size:1.2rem}.game-icon.icon-2048{font-size:.8rem}.game-card:hover{transform:none}.library-note{display:none}.arcade{padding:20px 16px 17px;border-radius:20px}.arcade-head h2{font-size:2rem}.score-card strong{font-size:1.6rem}.game-toolbar{margin:14px 0 14px;flex-direction:row;align-items:center;flex-wrap:wrap;gap:9px}.game-toolbar p{font-size:.8125rem}.toolbar-buttons{margin:0;margin-left:auto}.button{font-size:.875rem;padding:8px 11px}.stage-frame{padding:13px;border-radius:13px}.number-tile{font-size:clamp(1.2rem,6vw,2.3rem)}.number-tile.big{font-size:clamp(.9rem,5vw,1.7rem)}.tile-board{gap:7px;padding:7px;border-radius:11px}.number-tile{border-radius:7px}.instructions p{font-size:.875rem}.site-footer{padding:4px 20px 24px;flex-wrap:wrap;font-size:.75rem}.site-footer span:nth-child(2){display:none}.memory-board{gap:7px}.memory-card .face{font-size:1.8rem}.memory-card{font-size:1.6rem;border-radius:8px}.ttt-board{gap:9px}.ttt-cell{border-radius:10px;font-size:3rem}.reaction-pad strong{font-size:1.25rem}.reaction-pad .reaction-symbol{font-size:3.8rem}.game-overlay h3{font-size:1.55rem}.game-overlay p{font-size:.875rem}.dpad{margin-top:14px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}