@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap');
:root{color-scheme:light;--bg:#f6f4eb;--ink:#263e35;--muted:#697b70;--green:#2c634f;--line:#dce0d2}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:'DM Sans',system-ui,sans-serif;line-height:1.6}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer;color:inherit}button:disabled{opacity:.4;cursor:default}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,#board:focus-visible{outline:3px solid #b47d37;outline-offset:5px}.top{max-width:1120px;margin:auto;padding:26px 30px;display:flex;justify-content:space-between;align-items:center}.logo{display:flex;gap:9px;align-items:center;font-size:20px;font-weight:700;letter-spacing:-1px}.quiet{background:none;border:1px solid var(--line);border-radius:9px;padding:10px 15px;font-size:12px}.quiet:hover:not(:disabled){background:#e8ecdc}.top>.quiet{border:0}.layout{max-width:1000px;margin:30px auto 65px;padding:0 30px;display:grid;grid-template-columns:1fr 450px;gap:70px;align-items:center}.eyebrow{font-size:9px;letter-spacing:2.2px;font-weight:700;color:#718166}.intro h1{font:500 94px/.99 'Manrope',system-ui,sans-serif;letter-spacing:-6px;margin:24px 0}.intro h1 em{font-family:Georgia,serif;font-weight:400;color:var(--green);letter-spacing:-3px}.intro>p{color:var(--muted);font-size:16px;line-height:1.9}.intro-demo{display:flex;gap:10px;align-items:center;margin:35px 0}.intro-demo span{display:grid;place-items:center;width:48px;height:48px;background:#d4e5c0;border-radius:12px;font-weight:700;font-size:22px;box-shadow:0 4px 0 #b8ccaa}.intro-demo b{font-weight:400;color:#8b987d}.intro-demo .demo-result{background:#95c49c;transform:rotate(-8deg);box-shadow:0 4px 0 #70a57d}.feature{display:flex;gap:15px;align-items:center;margin:22px 0}.feature i{font-style:normal;font-size:25px;width:37px;color:#7b966f}.feature strong{font-size:13px;font-weight:500}.feature p{margin:2px 0;color:var(--muted);font-size:11px}.home-link{display:inline-block;margin-top:18px;font-size:12px;color:var(--muted)}.play-area{background:#fffdf6;padding:25px;border:1px solid var(--line);border-radius:27px;box-shadow:0 24px 70px #364d3010}.score-row{display:flex;gap:12px;align-items:center}.score-row>div{position:relative;background:#edf0e3;padding:9px 17px;min-width:104px;border-radius:12px}.score-row span{display:block;font-size:8px;letter-spacing:1.5px;color:var(--muted)}.score-row strong{display:block;font-family:Manrope,system-ui,sans-serif;font-size:27px;font-weight:700;line-height:1.4}.score-row #gain{position:absolute;right:8px;top:17px;color:#477649;font-weight:700;font-size:13px}.round{margin-left:auto;border:1px solid var(--line);border-radius:50%;width:40px;height:40px;background:transparent;font-size:22px;opacity:.55}.round[aria-pressed=true]{background:var(--green);color:#fff;opacity:1}.goal-row{display:flex;justify-content:space-between;font-size:10px;color:var(--muted);margin:19px 1px 7px}.goal-track{height:4px;background:#e5e9dd;border-radius:3px;margin-bottom:18px}.goal-track i{display:block;height:100%;background:#729a69;border-radius:3px;transition:width .3s}.board-wrap{position:relative}#board{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;padding:10px;border-radius:16px;background:#d9dfce;touch-action:none;user-select:none;-webkit-user-select:none;overscroll-behavior:contain}.cell{aspect-ratio:1;border-radius:11px;display:grid;place-items:center;background:#c9d2be;font:700 32px/1 'Manrope',system-ui,sans-serif;transition:background .12s;position:relative;color:#274a37}.cell[data-v="2"]{background:#f0f0d9}.cell[data-v="4"]{background:#e0ebc3}.cell[data-v="8"]{background:#c5dfa9}.cell[data-v="16"]{background:#9dcca1}.cell[data-v="32"]{background:#6faf95;color:#143e32}.cell[data-v="64"]{background:#3e8b78;color:#fff}.cell[data-v="128"]{background:#ecd39a;color:#644c25;font-size:28px}.cell[data-v="256"]{background:#e7b675;color:#613e18;font-size:28px}.cell[data-v="512"]{background:#d99062;color:#fff;font-size:28px}.cell[data-v="1024"]{background:#c56c54;color:#fff;font-size:24px}.cell[data-v="2048"]{background:#a84e4f;color:#fff;font-size:24px;box-shadow:0 0 22px #bd706c66}.cell.high{background:#6f5475;color:#fff;font-size:22px}.cell.pop{animation:pop .22s ease-out}.cell.fresh{animation:appear .19s ease-out}.board-bump{animation:bump .15s}.overlay{position:absolute;inset:0;background:#f7f5e9ed;backdrop-filter:blur(5px);border-radius:16px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:22px;z-index:2}.overlay>span{font-size:48px;color:#65906a}.overlay h2{font:500 27px/1.2 Manrope,system-ui,sans-serif;margin:12px 0}.overlay p{font-size:13px;color:var(--muted);max-width:250px}.primary{background:var(--green);border:0;color:white;border-radius:10px;padding:12px 22px;font-size:13px}.overlay .quiet{margin-top:10px}.message{min-height:38px;text-align:center;font-size:12px;margin:15px 0 5px;display:flex;align-items:center;justify-content:center;color:var(--green)}.controls{display:flex;justify-content:center;gap:8px}.arrows{display:flex;justify-content:center;gap:8px;margin-top:16px}.arrows button{border:1px solid var(--line);background:#edf0e3;border-radius:9px;width:45px;height:42px;font-size:22px}.arrows button:hover{background:#d8e3cb}.tip{text-align:center;color:var(--muted);font-size:10px;line-height:1.8;margin:12px 0 0}.storage-note{text-align:center;font-size:9px;color:#7e897a;margin:9px 0 0}.below{max-width:1060px;margin:0 auto 40px;padding:30px;border-top:1px solid var(--line)}.below h2{font:500 26px/1.3 Manrope,system-ui,sans-serif;letter-spacing:-.8px}.below>div{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}.below p{font-size:12px;color:var(--muted);line-height:1.9}.below p b{display:block;font-weight:500;color:var(--ink);margin-bottom:7px}.below>p{font-size:10px;margin-top:30px;max-width:750px}.below>a{font-size:11px}dialog{border:1px solid var(--line);background:#fffdf6;color:var(--ink);border-radius:20px;padding:26px;width:min(430px,calc(100% - 30px));max-height:85dvh;box-shadow:0 20px 70px #0002}dialog::backdrop{background:#20382d77;backdrop-filter:blur(5px)}dialog h2{font:500 25px/1.3 Manrope,system-ui,sans-serif;margin:12px 0}dialog p{font-size:13px;color:var(--muted);line-height:1.9}.close{float:right;background:none;border:1px solid var(--line);border-radius:50%;width:35px;height:35px}.dialog-actions{display:flex;gap:10px}.share-text{width:100%;padding:12px;border:1px solid var(--line);border-radius:9px;font:12px/1.7 system-ui,sans-serif}body:has(dialog[open]){overflow:hidden}[hidden]{display:none!important}@keyframes pop{50%{transform:scale(1.13)}100%{transform:scale(1)}}@keyframes appear{from{transform:scale(.5);opacity:.5}to{transform:scale(1);opacity:1}}@keyframes bump{50%{transform:translateX(3px)}}@media(prefers-reduced-motion:reduce){*,*::after{animation:none!important;transition:none!important}}body.reduce-motion *{animation:none!important;transition:none!important}@media(max-width:850px){.layout{grid-template-columns:1fr 420px;gap:25px;margin-top:20px}.intro h1{font-size:73px}.intro>p{font-size:14px}.intro-demo{gap:7px}.intro-demo span{width:39px;height:39px}.eyebrow{font-size:8px;letter-spacing:1px}.play-area{padding:20px}}@media(max-width:700px){.top{padding:18px 20px}.logo{font-size:17px}.top .quiet{padding:8px 0;font-size:11px}.layout{display:flex;flex-direction:column;margin:10px auto 30px;padding:0 15px;gap:20px;max-width:470px}.intro{width:100%;text-align:center}.intro .eyebrow{font-size:8px;letter-spacing:1.8px}.intro h1{font-size:44px;letter-spacing:-2px;margin:9px 0}.intro h1 br{display:none}.intro h1 em{letter-spacing:-1px;margin-left:6px}.intro>p{font-size:12px;margin:9px 0}.intro>p br{display:none}.intro-demo,.feature,.home-link{display:none}.play-area{width:100%;border-radius:21px;padding:17px}.cell{font-size:29px;border-radius:9px}#board{gap:8px;padding:9px}.score-row>div{min-width:90px;padding:8px 14px}.score-row strong{font-size:25px}.message{font-size:11px}.controls .quiet{font-size:11px;padding:10px 12px}.below{padding:25px 20px}.below h2{font-size:23px}.below>div{grid-template-columns:1fr;gap:5px}.below>p{font-size:10px}.goal-row{margin-top:14px}.goal-track{margin-bottom:14px}}@media(max-width:350px){.layout{padding-inline:10px}.play-area{padding:12px}#board{gap:6px;padding:7px}.cell{font-size:24px}.cell[data-v="1024"],.cell[data-v="2048"]{font-size:20px}.cell.high{font-size:18px}.controls{gap:5px}.controls .quiet{padding:9px 11px}}