:root{color:#7a4b2c;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#f7f0e6;font-family:Patrick Hand Local,Segoe Print,Microsoft YaHei,cursive;font-weight:400;line-height:1.5}html,body,#root{width:100%;height:100%;min-height:100%;margin:0}body{overscroll-behavior:none;min-height:100dvh;overflow:hidden}button,input,select{font:inherit}h1{margin:0}h2,h3,p{margin-top:0}code{color:#7a4b2c;background:#7a4b2c14;border-radius:8px;padding:2px 6px}a{color:inherit}:root{--page-bg:#f7f0e6;--panel-bg:#f2e3d1;--board-bg:#b98b5c;--text-strong:#7a4b2c;--text-body:#8e6e58;--text-soft:#6d584a;--tile-empty:#d0c0ac;--tile-2:#eee1cf;--tile-4:#ecd3b0;--tile-8:#d9b17e;--tile-16:#d89c5a;--tile-32:#c87d3e;--tile-64:#b8652e;--tile-128:#a95a25;--tile-256:#8b451e;--tile-512:#7b3817;--tile-1024:#6a2f11;--tile-2048:#5c2308;--card-shadow:0 18px 50px #633c1f1f}@font-face{font-family:Patrick Hand Local;src:url(/fonts/PatrickHand-Regular.ttf)format("truetype");font-weight:400;font-style:normal;font-display:swap}@font-face{font-family:Short Stack Local;src:url(/fonts/ShortStack-Regular.ttf)format("truetype");font-weight:400;font-style:normal;font-display:swap}*{box-sizing:border-box}body{min-height:100vh;color:var(--text-strong);background:radial-gradient(circle at 0 0,#ffffffe6,#0000 28%),linear-gradient(#f7f0e6 0%,#f2e7d7 100%);margin:0}button{cursor:pointer;border:0}.game-shell{justify-content:center;align-items:center;min-height:100dvh;padding:20px;display:flex}.game-surface{width:min(1220px,100%);max-width:1220px;height:min(860px,100dvh - 40px);box-shadow:var(--card-shadow);background:#faf3ebeb;border-radius:36px;flex-direction:column;margin:0 auto;padding:30px;display:flex;overflow:hidden}.game-header{flex:none;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:22px;display:flex}.brand-title{letter-spacing:.01em;color:var(--text-strong);margin:0;font-family:Short Stack Local,Patrick Hand Local,cursive;font-size:clamp(2.6rem,4.8vw,4rem);line-height:.95}.brand-tagline{max-width:420px;color:var(--text-body);margin:8px 0 0;font-family:Patrick Hand Local,Segoe Print,cursive;font-size:clamp(.98rem,1.5vw,1.05rem)}.score-row{gap:12px;display:flex}.score-card{background:#e5c8a7;border-radius:20px;min-width:132px;padding:12px 16px}.score-card:nth-child(2){background:#d8b38a}.score-label{color:var(--text-strong);margin-bottom:4px;font-family:Patrick Hand Local,Segoe Print,cursive;font-size:.92rem;display:block}.score-value{color:#5b341a;font-family:Short Stack Local,Patrick Hand Local,cursive;font-size:clamp(1.2rem,2vw,1.65rem)}.game-layout{flex:auto;grid-template-columns:280px minmax(0,1fr);align-items:stretch;gap:24px;min-height:0;display:grid}.side-panel,.mobile-panel{background:var(--panel-bg);border-radius:28px;padding:20px}.mobile-panel{display:none}.panel-title{color:var(--text-strong);margin:0 0 10px;font-family:Short Stack Local,Patrick Hand Local,cursive;font-size:1.08rem}.panel-copy{color:var(--text-soft);margin:0;font-family:Patrick Hand Local,Segoe Print,cursive;font-size:clamp(.98rem,1.5vw,1.08rem);line-height:1.42}.panel-actions{flex-wrap:wrap;gap:10px;margin-top:14px;display:flex}.game-main{flex-direction:column;min-height:0;display:flex}.action-button{color:#5b341a;background:#d8b38a;border-radius:999px;padding:11px 16px;font-family:Short Stack Local,Patrick Hand Local,cursive;font-size:1rem;transition:transform .18s,filter .18s}.action-button:hover{filter:brightness(1.03);transform:translateY(-1px)}.action-button.primary{color:#fff4e7;background:#b8652e}.board-card{background:var(--board-bg);border-radius:32px;flex:auto;justify-content:center;align-items:center;min-height:0;padding:16px;display:flex;position:relative;overflow:hidden}.board-card:before{content:"";pointer-events:none;background:linear-gradient(#ffffff24,#0000 26%);position:absolute;inset:0}.board{aspect-ratio:1;grid-template-rows:repeat(4,minmax(0,1fr));grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;width:min(100vw - 520px,100dvh - 250px);max-width:100%;max-height:100%;display:grid;position:relative}.tile{background:var(--tile-empty);color:#0000;-webkit-user-select:none;user-select:none;border-radius:24px;place-items:center;width:100%;min-width:0;height:100%;min-height:0;font-family:Short Stack Local,Patrick Hand Local,cursive;font-size:clamp(1.4rem,4vw,2rem);font-weight:400;transition:transform .16s,background-color .16s,color .16s;display:grid}.tile[data-filled=true]{color:#fff;transform:scale(1)}.tile[data-value="2"]{background:var(--tile-2);color:#6e4b35}.tile[data-value="4"]{background:var(--tile-4);color:#6e4b35}.tile[data-value="8"]{background:var(--tile-8)}.tile[data-value="16"]{background:var(--tile-16)}.tile[data-value="32"]{background:var(--tile-32)}.tile[data-value="64"]{background:var(--tile-64)}.tile[data-value="128"]{background:var(--tile-128);font-size:clamp(1.25rem,3vw,1.65rem)}.tile[data-value="256"]{background:var(--tile-256);font-size:clamp(1.25rem,3vw,1.65rem)}.tile[data-value="512"]{background:var(--tile-512);font-size:clamp(1.15rem,2.8vw,1.55rem)}.tile[data-value="1024"]{background:var(--tile-1024);font-size:clamp(1rem,2.4vw,1.35rem)}.tile[data-value="2048"]{background:var(--tile-2048);font-size:clamp(1rem,2.2vw,1.25rem)}.status-strip{color:var(--text-soft);flex-wrap:wrap;flex:none;justify-content:space-between;gap:12px;margin-top:12px;display:flex}.status-badge{background:#fff6;border-radius:999px;padding:8px 12px;font-family:Patrick Hand Local,Segoe Print,cursive;font-size:1rem}.overlay{text-align:center;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#f7f0e6d1;border-radius:24px;place-items:center;padding:28px;display:grid;position:absolute;inset:18px}.overlay h2{color:#7a4b2c;margin:0 0 12px;font-family:Short Stack Local,Patrick Hand Local,cursive;font-size:clamp(1.9rem,5vw,2.6rem)}.overlay p{max-width:28ch;color:var(--text-soft);margin:0 0 18px;font-family:Patrick Hand Local,Segoe Print,cursive;font-size:1.12rem}@media (width<=900px){.game-shell{padding:12px}.game-surface{border-radius:28px;height:calc(100dvh - 24px);padding:20px}.game-layout{grid-template-columns:1fr;gap:14px}.side-panel{display:none}.game-header{gap:14px;margin-bottom:14px}.brand-title{font-size:clamp(2.2rem,8vw,3.2rem)}.brand-tagline{font-size:.94rem}.score-value{font-size:clamp(1.1rem,4.6vw,1.4rem)}.board{gap:12px;width:min(100%,100dvh - 310px)}.mobile-panel{border-radius:22px;margin-top:10px;padding:16px;display:block}.status-strip{margin-top:10px}}@media (width<=560px){.game-shell{padding:0}.game-surface{height:100dvh;box-shadow:none;border-radius:0;padding:16px}.game-header{flex-direction:column;align-items:stretch;gap:12px;margin-bottom:12px}.brand-tagline{max-width:none;font-size:.9rem}.score-card{border-radius:18px;flex:1;min-width:0;padding:10px 12px}.board-card{border-radius:24px;padding:10px}.board{gap:10px;width:min(100%,100dvh - 300px)}.tile{border-radius:18px;font-size:clamp(.95rem,5vw,1.45rem)}.tile[data-value="128"],.tile[data-value="256"]{font-size:clamp(.82rem,4.1vw,1.05rem)}.tile[data-value="512"],.tile[data-value="1024"],.tile[data-value="2048"]{font-size:clamp(.7rem,3.6vw,.9rem)}.mobile-panel{padding:14px}.panel-actions{gap:6px}.action-button{text-align:center;flex:auto;padding:9px 12px;font-size:.92rem}.panel-title{margin-bottom:6px;font-size:1rem}.panel-copy{font-size:.95rem;line-height:1.34}.status-strip{display:none}.overlay{border-radius:18px;padding:18px;inset:10px}}@media (height<=780px) and (width>=901px){.game-shell{padding:12px}.game-surface{height:calc(100dvh - 24px);padding:22px}.game-header{margin-bottom:14px}.board{gap:12px;width:min(100vw - 500px,100dvh - 215px);max-width:100%;max-height:100%}.side-panel{padding:18px}.panel-copy{font-size:.94rem}.status-strip{margin-top:8px}}@media (width>=901px){.game-main{overflow:hidden}.board-card{align-items:flex-start}.board{width:auto;height:min(100%,100dvh - 250px)}}