:root{--gold:#d9b55d;--gold-light:#ffe5a0;--gold-soft:#d8c488;--ivory:#f7efd9;--muted:#b8ad98;--ink:#05070b;--panel:#0c1018;--line:#5d4a24;--gap:7px}*{box-sizing:border-box}[hidden]{display:none!important}html{background:var(--ink);color-scheme:dark}body{min-width:320px;min-height:100svh;margin:0;overflow-x:hidden;background:radial-gradient(circle at 50% 10%,#283149 0,#101623 24%,#07090f 61%,#030405 100%);color:var(--ivory);font-family:Arial,sans-serif}button,a,select,input{font:inherit}button,a,[role=button]{-webkit-tap-highlight-color:transparent}button{touch-action:manipulation}button:focus,a:focus{outline:none}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
.game-sitebar{position:sticky;top:0;z-index:50;display:flex;min-height:calc(52px + env(safe-area-inset-top));align-items:center;justify-content:space-between;gap:16px;border-bottom:1px solid #4f4022;padding:env(safe-area-inset-top) max(12px,calc((100% - 980px)/2 + 12px)) 0;background:#07090fed;box-shadow:0 10px 32px #000b;backdrop-filter:blur(14px)}.game-sitebrand{display:inline-flex;min-height:36px;align-items:center;border:1px solid #efd58d;border-radius:999px;padding:8px 44px 8px 12px;background:linear-gradient(90deg,#ffe7a0 0,#d3ad50 48%,#6d4d1d 100%);box-shadow:inset 0 1px #fff9,0 5px 14px #0008;color:#090806;font:900 .845rem/1 Arial,sans-serif;letter-spacing:.06em;text-decoration:none;white-space:nowrap}.game-sitebrand span{color:inherit;font-size:inherit;letter-spacing:inherit}.game-home-button{display:inline-flex;min-height:36px;align-items:center;justify-content:center;border:1px solid #f5dda0;border-radius:999px;padding:7px 14px;background:linear-gradient(110deg,#aa7d2b,#f3dc91 48%,#ae812d);box-shadow:inset 0 1px #fff9,0 5px 14px #0008;color:#090806;font:900 .72rem/1 Arial,sans-serif;letter-spacing:.08em;text-decoration:none;text-transform:uppercase;white-space:nowrap}.game-home-button:hover{background:linear-gradient(110deg,#c79d48,#ffe9a8 48%,#c79d48)}.game-sitebrand:focus-visible,.game-home-button:focus-visible{outline:3px solid #fff1b8;outline-offset:2px}.game-shell{width:min(100%,980px);min-height:calc(100svh - 52px);margin:auto;padding:10px 10px calc(18px + env(safe-area-inset-bottom))}.topbar{display:flex;min-height:52px;align-items:center;justify-content:space-between;gap:10px;padding:2px 2px 6px}.game-identity{min-width:0}.game-identity h1{margin:0;color:var(--gold-light);font:normal clamp(20px,5.2vw,27px)/1 Georgia,serif;white-space:nowrap}.player-name{display:block;min-height:10px;margin-top:3px;color:#b7aa91;font-size:9px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;white-space:nowrap}.top-actions{display:flex;gap:7px}.icon-button{display:grid;width:39px;height:39px;place-items:center;border:1px solid #80662f;border-radius:50%;background:linear-gradient(145deg,#192131,#080b11);box-shadow:inset 0 1px #fff2,0 5px 14px #0008;color:var(--gold-light);font-size:18px;cursor:pointer}.icon-button:active{transform:translateY(1px)}.icon-button:focus-visible,.column-hit:focus-visible,.undo-button:focus-visible,.primary-button:focus-visible,.secondary-button:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid #fff1b8;outline-offset:2px}.info-icon{font:italic bold 17px Georgia,serif}.scorebar{display:grid;grid-template-columns:repeat(2,1fr);margin-bottom:8px;border-block:1px solid #6d5629;background:#080b11aa}.scorebar.timer-visible{grid-template-columns:repeat(3,1fr)}.scorebar>div{padding:7px 4px;text-align:center;border-right:1px solid #42351d}.scorebar>div:last-child,.scorebar>div[hidden]+div{border-right:0}.scorebar span{display:block;color:#a89c86;font-size:8px;font-weight:800;letter-spacing:.14em}.scorebar strong{display:block;margin-top:2px;color:var(--gold-light);font:normal 19px Georgia,serif}
.premium-stage{position:relative;isolation:isolate;display:grid;min-height:520px;align-content:center;justify-items:center;overflow:hidden;border:1px solid #7b622f;border-radius:25px;padding:18px 8px 15px;background:linear-gradient(180deg,#111827dd,#06090fef),radial-gradient(circle at 50% 20%,#7891bd55,transparent 48%);box-shadow:inset 0 1px #fff3,inset 0 -40px 80px #0008,0 22px 60px #000b}.premium-stage:before{content:"";position:absolute;z-index:-1;inset:0;background:repeating-linear-gradient(105deg,transparent 0 84px,#ffffff05 86px 87px,transparent 89px 170px),linear-gradient(90deg,#0007,transparent 13% 87%,#0007)}.stage-glow{position:absolute;z-index:-1;width:210px;height:210px;border-radius:50%;filter:blur(60px);opacity:.25}.stage-glow.left{top:12%;left:-100px;background:#00d9ff}.stage-glow.right{right:-100px;bottom:8%;background:#b84fff}.drop-zone{position:relative;display:grid;width:min(100%,520px);height:74px;grid-template-columns:repeat(5,minmax(0,1fr));align-items:center;padding-inline:12px}.next-tile{position:relative;z-index:4;display:grid;width:58px;height:58px;grid-row:1;place-items:center;justify-self:center;border:1px solid #fff9;border-radius:18px;background:var(--tile);color:#fff;font:900 27px/1 Arial,sans-serif;text-shadow:0 2px 3px #0009;box-shadow:inset 8px 9px 14px #fff7,inset -10px -12px 18px #0008,0 8px 18px #000b,0 0 18px var(--glow);transition:grid-column .18s ease}.next-tile:after,.number-tile:after{content:"";position:absolute;top:9%;left:13%;width:48%;height:25%;border-radius:50%;background:linear-gradient(145deg,#fff9,transparent);filter:blur(1px);transform:rotate(-22deg)}.number-board{--rows:5;position:relative;display:grid;width:min(100%,520px);aspect-ratio:5/var(--rows);grid-template-columns:repeat(5,1fr);grid-template-rows:repeat(var(--rows),1fr);gap:var(--gap);border:1px solid #d1aa52;border-radius:22px;padding:12px;background:linear-gradient(145deg,#543617,#17120c 42%,#08090d 78%,#493017);box-shadow:inset 0 0 0 4px #0b0907,inset 0 0 0 6px #89662c,0 24px 35px #000c,0 0 32px #d7ae4722;touch-action:manipulation}.board-cell{border:1px solid #76613c77;border-radius:15px;background:linear-gradient(145deg,#171e29cc,#080b10ed);box-shadow:inset 0 1px #fff2,inset 0 -8px 14px #0009}.number-tile{position:relative;z-index:2;display:grid;min-width:0;min-height:0;place-items:center;overflow:hidden;border:1px solid #fff9;border-radius:15px;background:var(--tile);color:#fff;font:900 clamp(18px,6vw,34px)/1 Arial,sans-serif;letter-spacing:-.05em;text-shadow:0 2px 3px #0009;box-shadow:inset 8px 10px 15px #fff6,inset -10px -12px 18px #0008,0 5px 10px #000a,0 0 12px var(--glow);pointer-events:none}.number-tile.is-new{animation:drop-in .34s cubic-bezier(.17,.82,.24,1.15)}.number-tile.is-merged{animation:merge-pop .4s ease}.column-hit{position:absolute;z-index:5;top:0;bottom:0;width:20%;border:0;border-radius:14px;background:transparent;cursor:pointer}.column-hit:nth-of-type(1){left:0}.column-hit:nth-of-type(2){left:20%}.column-hit:nth-of-type(3){left:40%}.column-hit:nth-of-type(4){left:60%}.column-hit:nth-of-type(5){left:80%}.column-hit.is-selected{box-shadow:inset 0 0 0 2px #ffe18f88,0 0 16px #ffd76b22}.column-hit:disabled{cursor:not-allowed}.value-2{--tile:radial-gradient(circle at 31% 24%,#e6fff7 0 4%,#2bd6a0 30%,#075a49 74%,#03251f);--glow:#32e6b0}.value-4{--tile:radial-gradient(circle at 31% 24%,#e5f7ff 0 4%,#2e9fe8 30%,#0a3979 74%,#03152f);--glow:#39b9ff}.value-8{--tile:radial-gradient(circle at 31% 24%,#eee8ff 0 4%,#806cf0 30%,#39228e 74%,#150838);--glow:#9d83ff}.value-16{--tile:radial-gradient(circle at 31% 24%,#fae6ff 0 4%,#bc4ae6 30%,#67138a 74%,#280537);--glow:#ce65ff}.value-32{--tile:radial-gradient(circle at 31% 24%,#ffe5f2 0 4%,#ed4f9b 30%,#8b164e 74%,#37041c);--glow:#ff67ae}.value-64{--tile:radial-gradient(circle at 31% 24%,#ffe9dd 0 4%,#ef654a 30%,#8b2619 74%,#351008);--glow:#ff7b60}.value-128{--tile:radial-gradient(circle at 31% 24%,#fff8cf 0 4%,#e6aa28 30%,#8b5209 74%,#352004);--glow:#ffd45c}.value-256{--tile:radial-gradient(circle at 31% 24%,#f5ffd9 0 4%,#87cb38 30%,#386a0b 74%,#142703);--glow:#a7e54c}.value-512{--tile:radial-gradient(circle at 31% 24%,#e5ffff 0 4%,#25c9c9 30%,#087273 74%,#022a2c);--glow:#42ebec}.value-1024{--tile:radial-gradient(circle at 31% 24%,#ffe2e8 0 4%,#e6405c 30%,#801426 74%,#30040c);--glow:#ff5f79}.value-2048{--tile:radial-gradient(circle at 31% 24%,#fffbe4 0 4%,#e9c348 30%,#8c6b11 74%,#342704);--glow:#ffe477}.value-high{--tile:radial-gradient(circle at 31% 24%,hsl(var(--hue) 90% 92%) 0 4%,hsl(var(--hue) 82% 58%) 30%,hsl(var(--hue) 76% 27%) 74%,hsl(var(--hue) 70% 10%));--glow:hsl(var(--hue) 90% 65%)}.undo-button{display:flex;min-height:40px;align-items:center;gap:8px;margin-top:12px;border:1px solid #80662f;border-radius:999px;padding:7px 18px;background:#080b11cc;color:var(--gold-light);font-weight:800;cursor:pointer}.undo-button:disabled{opacity:.35}.ad-placeholder{display:grid;min-height:74px;place-items:center;margin-top:18px;border:1px solid #75613266;border-radius:13px;background:#15120d55;color:#897d68;font-size:10px;letter-spacing:.15em;text-transform:uppercase}
dialog{width:min(450px,calc(100% - 24px));max-height:calc(100dvh - 26px);margin:auto;overflow:auto;border:1px solid #8b6d32;border-radius:20px;padding:21px;background:radial-gradient(circle at 50% 0,#222c41,#0b0e15 55%);box-shadow:0 28px 100px #000e;color:var(--ivory)}dialog::backdrop{background:#000d;backdrop-filter:blur(6px)}.dialog-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:13px}.dialog-top h2,dialog>h2{margin:0;color:var(--gold-light);font:normal 27px Georgia,serif}dialog h3{margin:18px 0 5px;color:var(--gold-light);font-size:14px}dialog p{color:#d5cdbd;font-size:13px;line-height:1.55}.select-field,.switch-row{display:flex;min-height:58px;align-items:center;justify-content:space-between;gap:14px;border-bottom:1px solid #3c321f}.select-field span{display:block}.select-field small{display:block;max-width:230px;margin-top:3px;color:#a49a86;font-size:11px}.select-field select{min-width:112px;border:1px solid #80662f;border-radius:9px;padding:9px;background:#07090e;color:var(--ivory)}.switch-row input{width:22px;height:22px;accent-color:var(--gold)}.primary-button,.secondary-button{display:flex;min-height:44px;align-items:center;justify-content:center;border:1px solid var(--gold);border-radius:11px;padding:10px 16px;font-weight:850;text-decoration:none;cursor:pointer}.primary-button{width:100%;margin-top:17px;background:linear-gradient(110deg,#b8892f,#f0d88c,#b8892f);box-shadow:inset 0 1px #fff8;color:#080706}.secondary-button{background:#0b0e15;color:var(--gold-light)}.dialog-buttons{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:20px}.dialog-buttons .primary-button{margin-top:0}.account-note{margin-bottom:18px;border:1px solid #8a6d32;border-radius:16px;padding:16px;background:linear-gradient(145deg,#201b10,#0b0e15 72%)}.account-note h3{margin-top:0}.account-note div{display:grid;grid-template-columns:1fr auto;align-items:center;gap:14px}.account-note .primary-button{margin:0}.text-link{color:var(--gold-soft)}.control-list{display:grid;gap:10px}.control-list>div{display:grid;grid-template-columns:34px 1fr;align-items:center;gap:10px}.control-list b{display:grid;width:34px;height:34px;place-items:center;border:1px solid #735f34;border-radius:50%;color:var(--gold-soft)}.control-list p{margin:0}.volume-controls{display:grid;gap:10px;margin-top:15px}.volume-controls label{display:grid;grid-template-columns:80px 1fr auto;align-items:center;gap:8px;color:var(--gold-soft);font-size:12px}.volume-controls input{width:100%;accent-color:var(--gold)}.volume-controls button{border:1px solid #715d31;border-radius:8px;padding:7px;background:#17130e;color:var(--gold-soft)}.result-dialog{text-align:center}.result-number{display:grid;width:84px;height:84px;margin:14px auto;place-items:center;border:1px solid #fff9;border-radius:25px;background:radial-gradient(circle at 30% 25%,#fff8,#d7a72e 24%,#65460b 75%);box-shadow:inset 10px 10px 14px #fff5,inset -10px -12px 18px #0008,0 0 22px #ffd65c88;color:#fff;font:900 25px Arial,sans-serif;text-shadow:0 2px 3px #0009}.eyebrow{margin:0!important;color:var(--gold)!important;font-size:10px;font-weight:900;letter-spacing:.18em}.result-stats{display:grid;grid-template-columns:repeat(3,1fr);margin:16px 0}.result-stats div+div{border-left:1px solid #514329}.result-stats strong{display:block;color:var(--gold-soft);font:700 23px Georgia,serif}.result-stats span{color:var(--muted);font-size:9px;font-weight:900;letter-spacing:.12em}.result-close{width:100%;margin-top:9px}@keyframes drop-in{0%{opacity:.2;transform:translateY(-340%) scale(.7)}75%{transform:translateY(4%) scale(1.04)}100%{opacity:1;transform:none}}@keyframes merge-pop{50%{filter:brightness(1.35);transform:scale(1.15)}100%{transform:none}}
@media(max-width:430px){:root{--gap:5px}.game-shell{padding-inline:6px}.top-actions{gap:4px}.icon-button{width:36px;height:36px}.game-identity h1{font-size:20px}.premium-stage{min-height:470px;padding-inline:5px}.number-board{padding:8px}.number-tile,.board-cell{border-radius:11px}.drop-zone{height:60px;padding-inline:8px}.next-tile{width:48px;height:48px;border-radius:14px;font-size:23px}.game-sitebrand{padding-right:28px}}@media(min-width:700px) and (orientation:portrait){:root{--gap:11px}.premium-stage{min-height:720px}.number-board,.drop-zone{width:min(78vw,650px)}.number-board{padding:16px;border-radius:28px}.number-tile,.board-cell{border-radius:20px}.number-tile{font-size:clamp(30px,5vw,46px)}.drop-zone{height:92px;padding-inline:16px}.next-tile{width:70px;height:70px;font-size:32px}.scorebar strong{font-size:23px}}@media(orientation:landscape) and (max-height:800px){.game-shell{width:min(960px,100%)}.premium-stage{min-height:360px;padding-block:5px}.number-board,.drop-zone{width:min(65vh,580px)}.drop-zone{height:54px}.next-tile{width:44px;height:44px;border-radius:13px;font-size:21px}.undo-button{margin-top:6px}.ad-placeholder{display:none}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}.preview-capture .game-sitebar,.preview-capture .ad-placeholder{display:none}.preview-capture .game-shell{min-height:100svh;padding-top:8px}

/* Angular glass tiles and track-perfect column selection. */
.premium-stage{min-height:500px;padding:10px 4px 12px}
.number-board,.drop-zone{width:min(100%,580px)}
.drop-zone{height:68px;padding-inline:10px}
.number-board{padding:10px}
.next-tile,.number-tile{border:1px solid #e1bd69;border-radius:8px;background:var(--tile);box-shadow:inset 1px 1px #fff8,inset -1px -1px #0008,inset 0 10px 18px #ffffff18,0 6px 12px #000a,0 0 10px var(--glow);text-shadow:0 1px 2px #000b}
.next-tile{width:56px;height:56px;font-size:27px}
.next-tile:after,.number-tile:after{top:8%;left:7%;width:74%;height:16%;border-radius:3px;background:linear-gradient(100deg,#fff8,transparent 76%);filter:none;transform:none}
.number-tile{font-family:"Arial Narrow",Arial,sans-serif;font-weight:900}
.board-cell{border-radius:8px}
.column-hit{position:relative;top:auto;bottom:auto;left:auto!important;width:auto;min-width:0;height:auto;align-self:stretch;justify-self:stretch;margin:-2px 0;border:0;border-radius:8px;background:transparent}
.column-hit.is-selected{box-shadow:inset 0 0 0 2px #e8c66d,0 0 13px #ffd76b38}
.undo-button{display:none!important}
.value-2{--tile:linear-gradient(145deg,#68e2bdcc 0,#159570d9 48%,#07382fe8 100%);--glow:#32e6b0}.value-4{--tile:linear-gradient(145deg,#6cc7f1cc 0,#287fc2dc 48%,#102e64eb 100%);--glow:#39b9ff}.value-8{--tile:linear-gradient(145deg,#aaa0f3cc 0,#6c58d3dc 48%,#302278eb 100%);--glow:#9d83ff}.value-16{--tile:linear-gradient(145deg,#d88eeccc 0,#a43acbdc 48%,#5b176feb 100%);--glow:#ce65ff}.value-32{--tile:linear-gradient(145deg,#f28cbdcc 0,#cf397ddd 48%,#72183feb 100%);--glow:#ff67ae}.value-64{--tile:linear-gradient(145deg,#f39a83cc 0,#d5533cdd 48%,#792319eb 100%);--glow:#ff7b60}.value-128{--tile:linear-gradient(145deg,#efd17bcc 0,#cd9625dd 48%,#75500feb 100%);--glow:#ffd45c}.value-256{--tile:linear-gradient(145deg,#b4dc76cc 0,#70ae32dd 48%,#345c13eb 100%);--glow:#a7e54c}.value-512{--tile:linear-gradient(145deg,#72dbdbcc 0,#229f9fdd 48%,#0b5a5beb 100%);--glow:#42ebec}.value-1024{--tile:linear-gradient(145deg,#f18395cc 0,#cb354ddd 48%,#711729eb 100%);--glow:#ff5f79}.value-2048{--tile:linear-gradient(145deg,#f3dc8acc 0,#caa637dd 48%,#755d13eb 100%);--glow:#ffe477}.value-high{--tile:linear-gradient(145deg,hsl(var(--hue) 78% 72%/.82),hsl(var(--hue) 74% 48%/.88) 50%,hsl(var(--hue) 70% 23%/.94));--glow:hsl(var(--hue) 90% 65%)}
@media(max-width:430px){.premium-stage{min-height:452px;padding-inline:3px}.number-board{padding:7px}.drop-zone{height:56px;padding-inline:7px}.next-tile{width:46px;height:46px;border-radius:7px;font-size:22px}.number-tile,.board-cell{border-radius:7px}}
@media(min-width:700px) and (orientation:portrait){.premium-stage{min-height:720px}.number-board,.drop-zone{width:min(84vw,700px)}.number-board{padding:14px}.drop-zone{height:86px;padding-inline:14px}.next-tile{width:66px;height:66px;border-radius:9px;font-size:31px}.number-tile,.board-cell{border-radius:10px}}
@media(orientation:landscape) and (max-height:800px){.premium-stage{min-height:350px}.number-board,.drop-zone{width:min(70vh,620px)}.drop-zone{height:50px;padding-inline:6px}.number-board{padding:6px}.next-tile{width:42px;height:42px;border-radius:6px;font-size:20px}}

/* A merge contracts inside its cell and elastically returns to 100%; it never grows beyond the selection. */
.number-tile.is-merged{animation:merge-contract .5s cubic-bezier(.22,.78,.25,1)}
@keyframes merge-contract{0%{filter:brightness(1.2);transform:scale(1)}30%{filter:brightness(1.4);transform:scale(.68)}58%{filter:brightness(1.28);transform:scale(.92)}76%{transform:scale(.82)}90%{transform:scale(.97)}100%{filter:none;transform:scale(1)}}

/* The coloured atmosphere is only a background, not a second framed board. */
.premium-stage{min-height:0;overflow:hidden;border:0;border-radius:0;background:linear-gradient(180deg,#111827b8,#06090f80),radial-gradient(circle at 50% 24%,#7891bd48,transparent 55%);box-shadow:none}
@media(max-width:430px){.premium-stage{min-height:0}}
@media(min-width:700px) and (orientation:portrait){.premium-stage{min-height:0}}
@media(orientation:landscape) and (max-height:800px){.premium-stage{min-height:0}}