:root{--navy:#08164a;--blue:#2777ff;--violet:#8c3cff;--pink:#d542ed;--ink:#101d4d;--muted:#7f8aa9;--line:rgba(132,159,230,.18);--gap:clamp(8px,1.45vw,12px);font-family:"Inter","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:#f6f8ff}*{box-sizing:border-box}body{margin:0;min-width:320px;overflow-x:hidden;background:linear-gradient(135deg,#f7f9ff 0%,#eef4ff 48%,#fbf4ff 100%)}.ambient-grid{position:fixed;inset:0;pointer-events:none;background:linear-gradient(120deg,transparent 0 53%,rgba(126,88,255,.06) 53.1% 53.25%,transparent 53.3%),linear-gradient(25deg,transparent 0 75%,rgba(42,123,255,.06) 75.1% 75.25%,transparent 75.3%);mask-image:linear-gradient(to bottom,black,transparent 80%)}.ambient-grid:before,.ambient-grid:after{content:"";position:absolute;border-radius:50%;filter:blur(2px)}.ambient-grid:before{width:480px;height:480px;top:-250px;right:-130px;background:radial-gradient(circle,rgba(135,74,255,.21),transparent 68%)}.ambient-grid:after{width:420px;height:420px;bottom:-220px;left:-130px;background:radial-gradient(circle,rgba(43,121,255,.17),transparent 68%)}button,input{font:inherit}button{cursor:pointer}.page-shell{width:min(1120px,calc(100% - 42px));margin:0 auto;padding:35px 0 54px}.hero{position:relative;display:grid;grid-template-columns:auto 1fr;align-items:end;gap:24px;margin-bottom:25px}.brand-lockup{display:flex;align-items:center;gap:9px;color:var(--navy);font-size:22px;font-weight:900;letter-spacing:-.08em}.brand-mark{display:grid;place-items:center;width:37px;height:37px;border-radius:11px;color:#fff;background:linear-gradient(135deg,var(--blue),var(--violet));font-size:19px;box-shadow:0 8px 22px rgba(77,82,240,.28)}.hero-copy>span{display:block;margin-bottom:5px;color:#7180aa;font-size:11px;letter-spacing:.08em}.hero h1{margin:0;color:var(--navy);font-size:clamp(30px,4.4vw,51px);line-height:1;letter-spacing:-.065em}.hero h1 i{font-style:normal;color:var(--violet)}.hero-line{position:absolute;left:0;right:0;bottom:-13px;height:2px;background:linear-gradient(90deg,var(--blue),var(--pink),transparent 80%);opacity:.65}.game-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:20px;align-items:start}.glass-panel{border:1px solid var(--line);border-radius:22px;background:rgba(255,255,255,.74);box-shadow:0 20px 55px rgba(38,62,134,.1);backdrop-filter:blur(13px)}.game-card{padding:24px 27px 21px}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.mode-switch{display:inline-flex;padding:3px;border-radius:10px;background:#edf1fb}.mode-button{border:0;border-radius:8px;padding:8px 19px;color:#8995b1;background:transparent;font-size:14px;font-weight:800;transition:.2s}.mode-button.active{color:var(--navy);background:#fff;box-shadow:0 4px 12px rgba(57,75,134,.13)}.duration-control{display:flex;align-items:center;gap:8px;color:#7581a0;font-size:12px;font-weight:700}.duration-box{display:flex;align-items:center;padding:0 8px;border:1px solid #dde5f7;border-radius:8px;background:#fff}.duration-box input{width:42px;padding:7px 0;border:0;outline:0;color:var(--navy);text-align:right;font-weight:850}.duration-box em{padding-left:3px;color:#8a96b0;font-size:11px;font-style:normal}.scorebar{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px;margin-bottom:16px}.scorebar>div{padding:11px 13px;border-radius:12px;background:#f6f8fd}.scorebar span{display:block;margin-bottom:4px;color:#8290ae;font-size:11px;font-weight:700}.scorebar strong{font-size:27px;line-height:1;letter-spacing:-.055em}.scorebar .timer{background:linear-gradient(125deg,#f0f6ff,#f9f2ff)}.timer strong,.timer small{color:#673bdb}.timer small{margin-left:3px;font-size:11px;font-weight:800}.timer.urgent{animation:urgent .65s ease-in-out infinite alternate;background:#fff0f5}.timer.urgent strong,.timer.urgent small{color:#e13c83}@keyframes urgent{to{transform:scale(1.02)}}.board-wrap{position:relative;width:min(100%,520px);margin:0 auto}.board{position:relative;aspect-ratio:1;padding:var(--gap);border-radius:19px;background:linear-gradient(135deg,#d9e5ff,#c9d6f6 48%,#d8c9f5);box-shadow:inset 0 1px 0 rgba(255,255,255,.9),0 15px 35px rgba(58,77,153,.18);--unit:calc((100% - (3 * var(--gap)))/4)}.cell-layer,.tile-layer{position:absolute;inset:var(--gap)}.cell-layer{display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(4,1fr);gap:var(--gap)}.cell{border-radius:11px;background:rgba(255,255,255,.35);box-shadow:inset 0 1px 2px rgba(105,126,189,.1)}.tile-layer{pointer-events:none}.tile{position:absolute;left:calc(var(--col) * (var(--unit) + var(--gap)));top:calc(var(--row) * (var(--unit) + var(--gap)));width:var(--unit);height:var(--unit);display:flex;align-items:center;justify-content:center;border-radius:11px;color:#17337c;background:linear-gradient(145deg,#fff,#edf3ff);font-size:clamp(26px,5vw,46px);font-weight:900;letter-spacing:-.08em;box-shadow:0 7px 14px rgba(40,70,150,.15),inset 0 1px 0 rgba(255,255,255,.95);transition:left .16s cubic-bezier(.2,.9,.25,1),top .16s cubic-bezier(.2,.9,.25,1),transform .16s cubic-bezier(.2,.9,.25,1),opacity .16s ease}.tile.tile-spawn{animation:tile-spawn .18s cubic-bezier(.2,.9,.25,1) both}.tile.tile-merge{animation:tile-merge .2s cubic-bezier(.16,1.4,.3,1) both;z-index:2}.tile.tile-vanish{opacity:0;transform:scale(1.22)}@keyframes tile-spawn{0%{opacity:0;transform:scale(0)}100%{opacity:1;transform:scale(1)}}@keyframes tile-merge{0%{transform:scale(1)}45%{transform:scale(1.16)}100%{transform:scale(1)}}.tile.tile-2{color:#3257b7}.tile.tile-4{color:#2c4bb4;background:linear-gradient(145deg,#e9f2ff,#dbe7ff)}.tile.tile-8,.tile.tile-16{color:#fff;background:linear-gradient(145deg,#5c98ff,#466be8)}.tile.tile-16{background:linear-gradient(145deg,#5465ea,#6544d5)}.tile.tile-32,.tile.tile-64{color:#fff;background:linear-gradient(145deg,#aa49ed,#6741d7)}.tile.tile-64{background:linear-gradient(145deg,#dc48d8,#8c37c9)}.tile.tile-128,.tile.tile-256{color:#fff;background:linear-gradient(145deg,#f259be,#ee5990);font-size:clamp(22px,4vw,38px)}.tile.tile-512,.tile.tile-1024,.tile.tile-2048,.tile.tile-super{color:#fff;background:linear-gradient(145deg,#ff9d59,#e9508a);font-size:clamp(17px,3.3vw,31px)}.tile.tile-2048{background:linear-gradient(135deg,#ffbd4a,#e53bd0);box-shadow:0 0 28px rgba(226,73,210,.5),0 7px 14px rgba(40,70,150,.15)}.game-overlay{position:absolute;inset:0;display:grid;place-items:center;border-radius:19px;background:rgba(241,245,255,.74);opacity:0;pointer-events:none;transition:opacity .25s;backdrop-filter:blur(4px)}.game-overlay.visible{opacity:1;pointer-events:auto}.overlay-content{width:min(82%,340px);padding:25px;border:1px solid rgba(255,255,255,.92);border-radius:18px;background:rgba(255,255,255,.88);box-shadow:0 18px 45px rgba(42,59,126,.16);text-align:center}.overlay-symbol{display:inline-grid;place-items:center;width:57px;height:57px;margin-bottom:10px;border-radius:16px;color:#fff;background:linear-gradient(135deg,var(--blue),var(--violet));font-size:13px;font-weight:900;transform:rotate(-5deg);box-shadow:0 8px 18px rgba(64,75,215,.27)}.overlay-content h2{margin:0 0 7px;color:var(--navy);font-size:23px;letter-spacing:-.06em}.overlay-content p{margin:0 0 18px;color:#7582a3;font-size:13px}.primary-button,.secondary-button{border:0;border-radius:10px;padding:11px 20px;font-weight:850;transition:.18s}.primary-button{color:#fff;background:linear-gradient(110deg,var(--blue),var(--violet));box-shadow:0 8px 18px rgba(75,75,220,.23)}.primary-button:hover{transform:translateY(-1px);box-shadow:0 11px 24px rgba(75,75,220,.3)}.secondary-button{color:#66759c;background:#eef2fa}.secondary-button:hover:not(:disabled){background:#e2e8f5}button:disabled{cursor:not-allowed;opacity:.45}.game-actions{display:flex;justify-content:center;gap:9px;margin:18px 0 18px}.guide{display:flex;align-items:center;justify-content:space-between;padding:11px 14px;border-radius:11px;color:#6e7e9f;background:#f5f7fd;font-size:12px}.keys{display:grid;grid-template-columns:repeat(3,24px);grid-template-rows:repeat(2,22px);gap:3px}.keys b{display:grid;place-items:center;border:1px solid #dbe3f5;border-radius:5px;color:#6477a0;background:#fff;box-shadow:0 2px 0 #d8e0f0;font-size:13px}.keys b:first-child{grid-column:2}.keys b:nth-child(2){grid-column:1;grid-row:2}.keys b:nth-child(3){grid-column:2;grid-row:2}.keys b:nth-child(4){grid-column:3;grid-row:2}.side-column{display:grid;gap:15px}.leaderboard,.mode-card{padding:21px}.side-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:15px;color:var(--navy);font-size:18px;font-weight:900;letter-spacing:-.04em}.side-title b{color:#8190b0;font-size:11px;font-weight:700;letter-spacing:.05em}.leaderboard ol{display:grid;gap:7px;padding:0;margin:0;list-style:none;counter-reset:rank}.leaderboard li{display:grid;grid-template-columns:26px 1fr auto;align-items:center;gap:8px;padding:10px;border-radius:9px;background:#f6f8fd;counter-increment:rank}.leaderboard li:before{content:counter(rank,decimal-leading-zero);color:#93a1be;font-size:11px;font-weight:900}.leaderboard li:first-child{background:linear-gradient(100deg,#f1efff,#f8f3ff)}.leader-name{overflow:hidden;color:#53658e;font-size:13px;font-weight:750;text-overflow:ellipsis;white-space:nowrap}.leader-score{color:var(--navy);font-size:14px;font-weight:900}.leader-score small{margin-left:5px;color:#8b98b5;font-size:10px;font-weight:700}.leaderboard p{margin:17px 0 2px;color:#a0aac0;font-size:12px;text-align:center}.mode-row{display:flex;align-items:center;gap:10px;padding:9px 0;border-top:1px solid #edf0f8}.mode-row p{margin:0;color:#657597;font-size:13px}.mode-chip{display:grid;place-items:center;width:32px;height:28px;border-radius:8px;color:#fff;font-size:10px;font-weight:900}.mode-chip.blue{background:linear-gradient(135deg,#488bff,#4f57e5)}.mode-chip.violet{background:linear-gradient(135deg,#bb52e9,#7046dc)}.result-dialog{width:min(380px,calc(100% - 30px));padding:0;border:0;border-radius:21px;box-shadow:0 25px 80px rgba(15,28,76,.26)}.result-dialog::backdrop{background:rgba(8,16,56,.46);backdrop-filter:blur(4px)}.result-card{position:relative;padding:29px}.close-button{position:absolute;top:12px;right:15px;border:0;color:#9aa5bd;background:transparent;font-size:25px}.result-label{color:var(--violet);font-size:11px;font-weight:900;letter-spacing:.13em}.result-card h2{margin:7px 0 19px;color:var(--navy);font-size:25px;letter-spacing:-.06em}.result-numbers{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-bottom:19px}.result-numbers div{padding:13px;border-radius:11px;background:#f5f7fd}.result-numbers span{display:block;margin-bottom:5px;color:#8190ae;font-size:11px}.result-numbers strong{font-size:25px}.result-card label{display:block;margin-bottom:6px;color:#657597;font-size:12px;font-weight:800}.result-card input{width:100%;margin-bottom:11px;padding:11px 12px;border:1px solid #dce4f3;border-radius:9px;outline:0;color:var(--navy)}.result-card input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(39,119,255,.11)}.result-card .primary-button{width:100%}.submit-hint{margin:10px 0 0;color:#9ca7bd;font-size:10px;text-align:center}@media(max-width:800px){.page-shell{width:min(650px,calc(100% - 28px));padding-top:26px}.game-layout{grid-template-columns:1fr}.side-column{grid-template-columns:1fr 1fr}.side-column .leaderboard{grid-row:1}.side-column .mode-card{grid-row:1}.hero{grid-template-columns:auto 1fr}}@media(max-width:540px){.page-shell{width:calc(100% - 18px)}.hero{grid-template-columns:1fr;gap:10px}.hero-copy>span{font-size:10px}.hero h1{font-size:36px}.game-card{padding:17px 14px}.topbar{margin-bottom:15px}.mode-button{padding:8px 15px}.scorebar{gap:6px}.scorebar>div{padding:10px 8px}.scorebar strong{font-size:22px}.side-column{grid-template-columns:1fr}.side-column .leaderboard,.side-column .mode-card{grid-row:auto}.guide{font-size:11px}}

/* Motion layer: compositor-friendly movement and layered feedback. */
.board{overflow:visible}
.tile{left:0;top:0;will-change:transform,opacity;transition:transform .18s cubic-bezier(.22,.88,.22,1),opacity .14s ease;transform:translate3d(calc(var(--col) * (var(--unit) + var(--gap))),calc(var(--row) * (var(--unit) + var(--gap))),0) scale(1)}
.tile.tile-spawn{animation:tile-spawn .24s cubic-bezier(.16,1.35,.3,1) both}.tile.tile-merge{animation:tile-merge .24s cubic-bezier(.16,1.45,.28,1) both;z-index:2}.tile.tile-vanish{opacity:0;transform:translate3d(calc(var(--col) * (var(--unit) + var(--gap))),calc(var(--row) * (var(--unit) + var(--gap))),0) scale(.78)}
@keyframes tile-spawn{0%{opacity:0;transform:translate3d(calc(var(--col) * (var(--unit) + var(--gap))),calc(var(--row) * (var(--unit) + var(--gap))),0) scale(.45)}72%{opacity:1;transform:translate3d(calc(var(--col) * (var(--unit) + var(--gap))),calc(var(--row) * (var(--unit) + var(--gap))),0) scale(1.08)}100%{opacity:1;transform:translate3d(calc(var(--col) * (var(--unit) + var(--gap))),calc(var(--row) * (var(--unit) + var(--gap))),0) scale(1)}}
@keyframes tile-merge{0%{transform:translate3d(calc(var(--col) * (var(--unit) + var(--gap))),calc(var(--row) * (var(--unit) + var(--gap))),0) scale(1)}45%{transform:translate3d(calc(var(--col) * (var(--unit) + var(--gap))),calc(var(--row) * (var(--unit) + var(--gap))),0) scale(1.19)}72%{transform:translate3d(calc(var(--col) * (var(--unit) + var(--gap))),calc(var(--row) * (var(--unit) + var(--gap))),0) scale(.96)}100%{transform:translate3d(calc(var(--col) * (var(--unit) + var(--gap))),calc(var(--row) * (var(--unit) + var(--gap))),0) scale(1)}}
.score-pop-layer{position:absolute;inset:var(--gap);pointer-events:none;z-index:8}.score-pop{position:absolute;left:calc(var(--pop-col) * (var(--unit) + var(--gap)) + var(--unit) / 2);top:calc(var(--pop-row) * (var(--unit) + var(--gap)) + var(--unit) / 2);color:#6937dc;font-size:clamp(15px,2.6vw,23px);font-weight:950;letter-spacing:-.05em;text-shadow:0 2px 10px rgba(104,56,220,.22);transform:translate(-50%,-50%);animation:score-pop .58s cubic-bezier(.16,.8,.26,1) both}@keyframes score-pop{0%{opacity:0;transform:translate(-50%,-20%) scale(.72)}18%{opacity:1;transform:translate(-50%,-88%) scale(1.08)}100%{opacity:0;transform:translate(-50%,-180%) scale(.94)}}
@media(prefers-reduced-motion:reduce){.tile,.board,.primary-button{transition:none!important}.tile.tile-spawn,.tile.tile-merge,.score-pop{animation:none!important}.score-pop{display:none}}

/* Coordinate fix: percentage math must resolve against the tile layer, not each tile. */
.tile{left:calc(var(--col) * ((100% - (3 * var(--gap))) / 4 + var(--gap)));top:calc(var(--row) * ((100% - (3 * var(--gap))) / 4 + var(--gap)));width:calc((100% - (3 * var(--gap))) / 4);height:calc((100% - (3 * var(--gap))) / 4);transform:scale(1);transition:left .18s cubic-bezier(.22,.88,.22,1),top .18s cubic-bezier(.22,.88,.22,1),transform .22s cubic-bezier(.16,1.35,.3,1),opacity .14s ease}
.tile.tile-vanish{transform:scale(.78)}
@keyframes tile-spawn{0%{opacity:0;transform:scale(.45)}72%{opacity:1;transform:scale(1.08)}100%{opacity:1;transform:scale(1)}}
@keyframes tile-merge{0%{transform:scale(1)}45%{transform:scale(1.19)}72%{transform:scale(.96)}100%{transform:scale(1)}}
.score-pop{left:calc(var(--pop-col) * ((100% - (3 * var(--gap))) / 4 + var(--gap)) + ((100% - (3 * var(--gap))) / 4) / 2);top:calc(var(--pop-row) * ((100% - (3 * var(--gap))) / 4 + var(--gap)) + ((100% - (3 * var(--gap))) / 4) / 2)}

/* Open-source 2048 style layering: the wrapper travels, the inner tile breathes. */
.tile{
  display:block;
  overflow:visible;
  border-radius:0;
  color:inherit;
  background:transparent !important;
  box-shadow:none !important;
  font-size:inherit;
  letter-spacing:normal;
  transform:none;
  transition:none;
  will-change:transform;
}
.tile-inner{
  position:relative;
  width:100%;
  height:100%;
  display:grid;
  place-items:center;
  overflow:hidden;
  border-radius:11px;
  color:#3257b7;
  background:linear-gradient(145deg,#fff 0%,#edf3ff 100%);
  box-shadow:0 8px 16px rgba(40,70,150,.16),inset 0 1px 0 rgba(255,255,255,.95);
  font-size:clamp(26px,5vw,46px);
  font-weight:900;
  letter-spacing:-.08em;
  line-height:1;
  transform:translateZ(0);
  backface-visibility:hidden;
  will-change:transform,opacity;
}
.tile-inner::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  border-radius:inherit;
  background:linear-gradient(120deg,rgba(255,255,255,.34),transparent 42%);
  opacity:.75;
}
.tile.tile-2 .tile-inner{color:#3257b7}
.tile.tile-4 .tile-inner{color:#2c4bb4;background:linear-gradient(145deg,#e9f2ff,#dbe7ff)}
.tile.tile-8 .tile-inner,.tile.tile-16 .tile-inner{color:#fff;background:linear-gradient(145deg,#5c98ff,#466be8)}
.tile.tile-16 .tile-inner{background:linear-gradient(145deg,#5465ea,#6544d5)}
.tile.tile-32 .tile-inner,.tile.tile-64 .tile-inner{color:#fff;background:linear-gradient(145deg,#aa49ed,#6741d7)}
.tile.tile-64 .tile-inner{background:linear-gradient(145deg,#dc48d8,#8c37c9)}
.tile.tile-128 .tile-inner,.tile.tile-256 .tile-inner{color:#fff;background:linear-gradient(145deg,#f259be,#ee5990);font-size:clamp(22px,4vw,38px)}
.tile.tile-512 .tile-inner,.tile.tile-1024 .tile-inner,.tile.tile-2048 .tile-inner,.tile.tile-super .tile-inner{color:#fff;background:linear-gradient(145deg,#ff9d59,#e9508a);font-size:clamp(17px,3.3vw,31px)}
.tile.tile-2048 .tile-inner{background:linear-gradient(135deg,#ffbd4a,#e53bd0);box-shadow:0 0 28px rgba(226,73,210,.5),0 8px 16px rgba(40,70,150,.16)}
.tile-inner.tile-new{animation:tile-inner-appear 220ms cubic-bezier(.22,.88,.28,1) both}
.tile-inner.tile-merged{animation:tile-inner-pop 285ms cubic-bezier(.22,.88,.28,1) both}
@keyframes tile-inner-appear{0%{opacity:0;transform:translateZ(0) scale(.58)}72%{opacity:1;transform:translateZ(0) scale(1.045)}100%{opacity:1;transform:translateZ(0) scale(1)}}
@keyframes tile-inner-pop{0%{transform:translateZ(0) scale(.995)}34%{transform:translateZ(0) scale(1.055)}74%{transform:translateZ(0) scale(.998)}100%{transform:translateZ(0) scale(1)}}
.tile[data-merge-source] .tile-inner{will-change:transform,opacity}

/* Final visual pass: quiet contrast, generous space, and a more editorial surface. */
:root{--navy:#0b1b4c;--blue:#376cf4;--violet:#7656e9;--pink:#c85bdc;--line:rgba(89,111,173,.16)}
body{background:radial-gradient(900px 520px at 84% -8%,rgba(124,93,237,.12),transparent 65%),radial-gradient(760px 500px at -8% 76%,rgba(53,112,241,.1),transparent 68%),#f4f7fc}
.ambient-grid{opacity:.5}
.page-shell{padding-top:42px}
.hero{margin-bottom:30px}
.hero-line{height:1px;opacity:.42}
.glass-panel{border-color:rgba(103,126,190,.14);background:rgba(255,255,255,.82);box-shadow:0 18px 48px rgba(31,48,99,.08),inset 0 1px 0 rgba(255,255,255,.96);backdrop-filter:blur(18px)}
.game-card{padding:26px 28px 23px}
.scorebar>div{border:1px solid rgba(112,133,190,.08);background:rgba(248,250,255,.82)}
.scorebar .timer{background:linear-gradient(135deg,rgba(241,246,255,.95),rgba(249,245,255,.95))}
.board{background:linear-gradient(145deg,#e3eafa 0%,#d8e1f4 54%,#e8e0f5 100%);box-shadow:inset 0 1px 0 rgba(255,255,255,.92),0 18px 40px rgba(47,66,128,.15)}
.cell{background:rgba(255,255,255,.29);box-shadow:inset 0 1px 2px rgba(83,106,165,.12)}
.tile-inner{border-radius:12px;box-shadow:0 9px 20px rgba(39,64,132,.14),inset 0 1px 0 rgba(255,255,255,.92)}
.tile-inner::after{opacity:.52}
.side-column{gap:18px}
.leaderboard,.mode-card{padding:22px}
.leaderboard li{background:rgba(247,249,254,.88);border:1px solid rgba(107,128,183,.07)}
.leaderboard li:first-child{background:linear-gradient(105deg,#f1f0ff,#faf6ff)}
.guide{border:1px solid rgba(108,129,185,.08);background:rgba(247,249,254,.76)}
.primary-button{background:linear-gradient(110deg,#386ff4,#7552e8);box-shadow:0 9px 20px rgba(67,83,211,.2)}
.primary-button:hover{box-shadow:0 12px 26px rgba(67,83,211,.26)}
.mode-switch{background:#edf1f9;border:1px solid rgba(112,131,181,.08)}
.duration-box{border-color:rgba(112,133,190,.16);box-shadow:0 2px 8px rgba(36,58,116,.04)}
.score-pop{color:#624bd0;font-weight:850;text-shadow:0 2px 8px rgba(88,67,190,.16);animation:score-pop-refined .48s cubic-bezier(.22,.8,.28,1) both}
@keyframes score-pop-refined{0%{opacity:0;transform:translate(-50%,-34%) scale(.9)}18%{opacity:.82;transform:translate(-50%,-74%) scale(1)}100%{opacity:0;transform:translate(-50%,-150%) scale(.98)}}
.brand-mark svg{width:21px;height:21px;display:block}
.keys b{padding:0}
.keys b svg{width:15px;height:15px;display:block;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.close-button{display:grid;place-items:center;width:30px;height:30px;padding:0}
.close-button svg{width:18px;height:18px;display:block;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}


/* Keep keyboard focus visible without a browser-default black frame. */
.board:focus-visible{outline:2px solid rgba(55,108,244,.35);outline-offset:5px}


/* Editorial header: a quieter hierarchy for the event title. */
.hero{grid-template-columns:136px minmax(0,1fr);align-items:center;gap:30px;margin-bottom:34px}
.brand-lockup{flex-direction:column;align-items:flex-start;gap:8px;font-size:18px;letter-spacing:-.065em}
.brand-mark{width:42px;height:42px;border-radius:13px;box-shadow:0 10px 24px rgba(77,82,240,.22)}
.brand-mark svg{width:22px;height:22px}
.hero-copy>span{margin-bottom:9px;color:#7a87a8;font-size:10px;letter-spacing:.14em}
.hero h1{display:flex;align-items:baseline;gap:16px;font-size:clamp(38px,5.2vw,62px);line-height:.96;letter-spacing:-.085em}
.hero h1 strong{font-weight:900}
.hero h1 i{font-size:1.04em;font-weight:900;letter-spacing:-.1em}
.hero-copy p{margin:11px 0 0;color:#7c89a7;font-size:13px;font-weight:700;letter-spacing:.18em}
.hero-line{bottom:-16px;background:linear-gradient(90deg,var(--blue) 0%,var(--violet) 38%,rgba(200,91,220,.18) 70%,transparent 100%);opacity:.55}
body.is-playing .guide{color:#6577a0;background:rgba(239,244,255,.84)}
@media(max-width:800px){.hero{grid-template-columns:112px minmax(0,1fr);gap:20px}}
@media(max-width:540px){.hero{grid-template-columns:1fr;gap:12px;align-items:start;margin-bottom:27px}.brand-lockup{flex-direction:row;align-items:center}.hero-copy>span{font-size:9px}.hero h1{gap:10px;font-size:clamp(34px,10vw,44px)}.hero-copy p{margin-top:8px;font-size:11px;letter-spacing:.14em}}

/* Brand lockup: complete event name with a compact, custom wordmark. */
.hero{grid-template-columns:220px minmax(0,1fr);gap:34px}
.brand-lockup{flex-direction:row;align-items:center;gap:12px;color:var(--navy);font-size:inherit;letter-spacing:normal}
.brand-mark{flex:0 0 auto;width:48px;height:48px;border-radius:15px;background:linear-gradient(145deg,#3f75f7 0%,#7251e8 100%);box-shadow:0 11px 25px rgba(77,82,240,.22)}
.brand-mark svg{width:24px;height:24px}
.brand-name{display:flex;align-items:baseline;gap:3px;white-space:nowrap;font-size:clamp(22px,2.3vw,29px);font-weight:900;letter-spacing:-.12em;line-height:1}
.brand-name b{font-weight:950;color:var(--navy)}
.brand-name em{font-style:normal;font-weight:950;background:linear-gradient(105deg,#536ff1 0%,#8b44e8 80%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-copy>span{margin-bottom:10px;font-size:10px;letter-spacing:.13em}
.hero h1{gap:14px;font-size:clamp(37px,4.8vw,57px);letter-spacing:-.075em}
.hero h1 strong{font-weight:900}
.hero h1 i{font-weight:900;letter-spacing:-.1em}
.hero-copy p{margin-top:10px;font-size:12px;letter-spacing:.2em}
@media(max-width:800px){.hero{grid-template-columns:190px minmax(0,1fr);gap:24px}.brand-name{font-size:24px}}
@media(max-width:540px){.hero{grid-template-columns:1fr;gap:15px}.brand-lockup{gap:10px}.brand-mark{width:42px;height:42px;border-radius:13px}.brand-mark svg{width:21px;height:21px}.brand-name{font-size:25px}.hero h1{gap:10px;font-size:clamp(34px,10vw,44px)}}

/* Brand-led header: a single, deliberate lockup for the event identity. */
.hero{
  grid-template-columns:minmax(210px,.72fr) minmax(0,1.65fr);
  align-items:center;
  gap:clamp(26px,5vw,68px);
  margin-bottom:38px;
}
.brand-lockup{
  position:relative;
  display:flex;
  align-items:center;
  gap:14px;
  min-height:76px;
  padding:13px 18px 13px 13px;
  border:1px solid rgba(93,113,178,.16);
  border-radius:20px;
  background:rgba(255,255,255,.72);
  box-shadow:0 12px 28px rgba(44,63,119,.08),inset 0 1px 0 rgba(255,255,255,.96);
}
.brand-lockup::after{
  content:"";
  position:absolute;
  right:14px;
  bottom:-1px;
  width:42px;
  height:2px;
  border-radius:99px;
  background:linear-gradient(90deg,#3d74f6,#8c5ce7);
}
.brand-mark{
  flex:0 0 auto;
  display:grid;
  place-items:center;
  width:47px;
  height:47px;
  border-radius:15px;
  color:#fff;
  background:linear-gradient(145deg,#3e78f7 0%,#7353e9 100%);
  box-shadow:0 10px 22px rgba(68,84,214,.23);
}
.brand-mark svg{width:23px;height:23px;display:block}
.brand-name{
  display:flex;
  align-items:baseline;
  gap:2px;
  white-space:nowrap;
  color:var(--navy);
  font-size:clamp(25px,2.45vw,33px);
  font-weight:950;
  letter-spacing:-.14em;
  line-height:1;
}
.brand-name b{font-weight:950;color:var(--navy)}
.brand-name em{
  font-style:normal;
  font-weight:950;
  background:linear-gradient(110deg,#4c71ee 8%,#8c4ee3 92%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-copy{min-width:0}
.hero-affiliation{
  display:block;
  margin:0 0 11px;
  color:#7886a8;
  font-size:11px;
  font-weight:700;
  letter-spacing:.08em;
}
.hero h1{
  display:flex;
  align-items:baseline;
  gap:clamp(12px,2vw,20px);
  margin:0;
  color:var(--navy);
  font-size:clamp(39px,5.2vw,64px);
  line-height:.94;
  letter-spacing:-.09em;
}
.hero h1 strong{font-weight:900}
.hero h1 i{
  font-style:normal;
  font-weight:950;
  letter-spacing:-.11em;
  background:linear-gradient(110deg,#416ef0 0%,#8e4fe3 88%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero-copy p{
  display:flex;
  align-items:center;
  gap:10px;
  margin:13px 0 0;
  color:#7a88a8;
  font-size:12px;
  font-weight:800;
  letter-spacing:.22em;
}
.hero-copy p::before{
  content:"";
  width:27px;
  height:2px;
  border-radius:99px;
  background:linear-gradient(90deg,#3d74f6,#8d55e7);
}
.hero-line{
  bottom:-18px;
  height:1px;
  opacity:.52;
  background:linear-gradient(90deg,#3d74f6 0%,#7958e9 42%,rgba(200,91,220,.18) 70%,transparent 100%);
}
@media(max-width:800px){
  .hero{grid-template-columns:170px minmax(0,1fr);gap:24px}
  .brand-lockup{min-height:68px;padding:10px 13px 10px 10px;gap:10px;border-radius:17px}
  .brand-mark{width:42px;height:42px;border-radius:13px}
  .brand-mark svg{width:21px;height:21px}
  .brand-name{font-size:24px}
  .hero-affiliation{font-size:10px;letter-spacing:.03em}
}
@media(max-width:540px){
  .hero{grid-template-columns:1fr;gap:17px;margin-bottom:31px}
  .brand-lockup{width:max-content;min-height:0;padding:10px 15px 10px 10px}
  .brand-name{font-size:27px}
  .hero-affiliation{margin-bottom:9px;font-size:9px;white-space:nowrap;letter-spacing:.01em}
  .hero h1{gap:11px;font-size:clamp(35px,10.5vw,47px)}
  .hero-copy p{margin-top:10px;font-size:11px;letter-spacing:.15em}
}

/* Shared center axis: balance the brand and title as one centered composition. */
.page-shell{width:min(1120px,calc(100% - 42px));margin-inline:auto}
.hero{
  width:min(900px,100%);
  margin-inline:auto;
  grid-template-columns:270px minmax(0,1fr);
  gap:48px;
}
.brand-lockup{width:270px;justify-content:flex-start}
.hero-copy{transform:none;text-align:center}
.hero-affiliation{white-space:nowrap}
.hero h1,.hero-copy p{justify-content:center}
.game-layout{width:100%;align-items:center}
.game-card,.side-column{margin-inline:auto}
@media(max-width:800px){
  .hero{width:100%;grid-template-columns:170px minmax(0,1fr);gap:24px}
  .brand-lockup{width:170px}
  .hero-copy{text-align:left}
  .hero-affiliation{white-space:normal}
  .hero h1,.hero-copy p{justify-content:flex-start}
}
@media(max-width:540px){
  .page-shell{width:calc(100% - 18px)}
  .hero{grid-template-columns:1fr;gap:17px}
  .brand-lockup{width:max-content}
  .hero-copy{text-align:left}
}

/* Shared center axis: balance the brand and title as one centered composition. */
.page-shell{width:min(1120px,calc(100% - 42px));margin-inline:auto}
.hero{
  width:min(900px,100%);
  margin-inline:auto;
  grid-template-columns:270px minmax(0,1fr);
  gap:48px;
}
.brand-lockup{width:270px;justify-content:flex-start}
.hero-copy{transform:none;text-align:center}
.hero-affiliation{white-space:nowrap}
.hero h1,.hero-copy p{justify-content:center}
.game-layout{width:100%;align-items:center}
.game-card,.side-column{margin-inline:auto}
@media(max-width:800px){
  .hero{width:100%;grid-template-columns:170px minmax(0,1fr);gap:24px}
  .brand-lockup{width:170px}
  .hero-copy{text-align:left}
  .hero-affiliation{white-space:normal}
  .hero h1,.hero-copy p{justify-content:flex-start}
}
@media(max-width:540px){
  .page-shell{width:calc(100% - 18px)}
  .hero{grid-template-columns:1fr;gap:17px}
  .brand-lockup{width:max-content}
  .hero-copy{text-align:left}
}

/* Center-stage layout: let the board own the page, with results below it. */
.game-layout{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:22px;
}
.game-card{
  width:min(760px,100%);
}
.board-wrap{width:min(100%,560px)}
.side-column{
  width:min(760px,100%);
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(250px,.85fr);
  gap:18px;
}
.leaderboard,.mode-card{height:100%}
.leaderboard ol{
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:8px;
}
.leaderboard li:first-child{
  grid-column:1 / -1;
  padding:13px 12px;
  background:linear-gradient(105deg,#eef0ff 0%,#faf4ff 100%);
  border-color:rgba(112,93,221,.12);
}
.leaderboard li:first-child::before{color:#6f55d9}
.leaderboard li:first-child .leader-score{font-size:17px}
.leaderboard li:first-child .leader-name{font-size:14px;color:#3e4e7b}
.leaderboard-empty{grid-column:1 / -1}
.leaderboard .side-title{margin-bottom:14px}
.mode-card .side-title{margin-bottom:8px}
.mode-row{padding:11px 0}
.brand-name,
.hero h1,
.hero h1 i{overflow:visible}
.brand-name{letter-spacing:-.09em;padding-right:.17em}
.brand-name em{
  display:inline-block;
  padding-right:.24em;
  margin-right:0;
  overflow:visible;
  text-rendering:geometricPrecision;
  background:none;
  color:#7656e8;
  -webkit-text-fill-color:#7656e8;
}
.hero h1{letter-spacing:-.065em;padding-right:.16em}
.hero h1 i{letter-spacing:-.07em;padding-right:.12em}
@media(max-width:800px){
  .game-card,.side-column{width:min(650px,100%)}
  .side-column{grid-template-columns:minmax(0,1.35fr) minmax(220px,.85fr)}
}
@media(max-width:560px){
  .game-card{width:100%}
  .side-column{width:100%;grid-template-columns:1fr}
  .leaderboard ol{grid-template-columns:1fr 1fr}
}
@media(max-width:380px){
  .leaderboard ol{grid-template-columns:1fr}
  .leaderboard li:first-child{grid-column:auto}
}

/* Compact stage and practical leaderboard controls. */
.game-card{width:min(720px,100%);padding:22px 24px 20px}
.board-wrap{width:min(100%,500px)}
.side-column{width:min(720px,100%)}
.side-title-copy{display:flex;align-items:baseline;gap:9px}
.leader-actions{display:flex;align-items:center;gap:5px}
.icon-button{
  display:inline-flex;
  align-items:center;
  gap:4px;
  border:1px solid rgba(106,127,185,.14);
  border-radius:7px;
  padding:5px 7px;
  color:#7786a6;
  background:rgba(247,249,255,.8);
  font-size:10px;
  font-weight:800;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.icon-button:hover{color:#3f62d9;background:#fff;border-color:rgba(73,105,218,.26)}
.icon-button.danger:hover{color:#c45178;border-color:rgba(196,81,120,.25);background:#fff7fa}
.icon-button svg{width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.leaderboard ol{grid-template-columns:1fr 1fr;gap:8px}
.leaderboard li{
  grid-template-columns:26px minmax(0,1fr) auto;
  gap:10px;
  min-width:0;
}
.leaderboard li::before{grid-column:1;grid-row:1}
.leader-main{grid-column:2;grid-row:1;min-width:0;display:grid;gap:6px}
.leader-score{grid-column:3;grid-row:1;align-self:center}
.leader-bar{display:block;width:100%;height:4px;overflow:hidden;border-radius:99px;background:#e8edfa}
.leader-bar i{display:block;width:var(--score-ratio,0%);height:100%;border-radius:inherit;background:linear-gradient(90deg,#527cf4,#8c5be4);transition:width .3s ease}
.leader-score{display:flex;align-items:baseline;gap:4px}
.leader-score small{margin-left:0}
.leaderboard li.rank-top{grid-column:1 / -1}
.leaderboard li.rank-top .leader-bar{height:5px;background:#e4e9fb}
.leaderboard li.rank-top .leader-bar i{background:linear-gradient(90deg,#4e78f5,#9a5bdf)}
.leaderboard-status{min-height:15px;margin:10px 0 0;color:#8895b0;font-size:10px;text-align:right}
.leaderboard-empty{grid-column:1 / -1}
@media(max-width:800px){.game-card,.side-column{width:min(650px,100%)}}
@media(max-width:560px){.game-card{padding:18px 14px 18px}.leader-actions span{display:none}.icon-button{padding:6px}.side-column{width:100%}}

/* Final header balance: compact wordmark, centered title rhythm, no trailing text void. */
.hero{
  grid-template-columns:300px minmax(0,1fr);
  gap:82px;
  align-items:center;
}
.brand-lockup{
  justify-self:start;
  justify-content:center;
  width:270px;
  min-height:76px;
  padding:13px 16px;
}
.brand-name{letter-spacing:-.06em;padding-right:0}
.brand-name em{padding-right:0;margin-right:0}
.hero-copy{min-width:0;transform:translateX(4px)}
.hero-affiliation{text-align:center}
.hero h1{
  font-size:clamp(37px,4.8vw,58px);
  letter-spacing:-.055em;
  padding-right:0;
}
.hero h1 i{letter-spacing:-.055em;padding-right:0}
.hero-copy p{letter-spacing:.18em}
@media(max-width:900px){
  .hero{grid-template-columns:260px minmax(0,1fr);gap:38px}
  .brand-lockup{width:250px}
  .hero-copy{transform:none}
}
@media(max-width:800px){
  .hero{grid-template-columns:170px minmax(0,1fr);gap:24px}
  .brand-lockup{width:170px;min-height:68px;padding:10px 12px}
  .brand-name{font-size:24px}
  .hero-affiliation{text-align:left}
}
@media(max-width:540px){
  .hero{grid-template-columns:1fr;gap:17px}
  .brand-lockup{width:max-content;min-height:0;padding:10px 15px 10px 10px;justify-content:flex-start}
  .hero-affiliation{text-align:left}
}

/* Shared center axis: balance the brand and title as one centered composition. */
.page-shell{width:min(1120px,calc(100% - 42px));margin-inline:auto}
.hero{
  width:min(900px,100%);
  margin-inline:auto;
  grid-template-columns:270px minmax(0,1fr);
  gap:48px;
}
.brand-lockup{width:270px;justify-content:flex-start}
.hero-copy{transform:none;text-align:center}
.hero-affiliation{white-space:nowrap}
.hero h1,.hero-copy p{justify-content:center}
.game-layout{width:100%;align-items:center}
.game-card,.side-column{margin-inline:auto}
@media(max-width:800px){
  .hero{width:100%;grid-template-columns:170px minmax(0,1fr);gap:24px}
  .brand-lockup{width:170px}
  .hero-copy{text-align:left}
  .hero-affiliation{white-space:normal}
  .hero h1,.hero-copy p{justify-content:flex-start}
}
@media(max-width:540px){
  .page-shell{width:calc(100% - 18px)}
  .hero{grid-template-columns:1fr;gap:17px}
  .brand-lockup{width:max-content}
  .hero-copy{text-align:left}
}
@media(min-width:801px){
  .hero{grid-template-columns:270px max-content;justify-content:center}
  .hero-copy{text-align:left}
  .hero h1,.hero-copy p{justify-content:flex-start}
}

/* Quiet editorial finish: natural wordmark width, a centered stage, and softer surfaces. */
:root{
  --navy:#172548;
  --ink:#202d4b;
  --muted:#78839a;
  --line:rgba(44,62,102,.11);
}
body{
  background:
    radial-gradient(780px 420px at 50% -12%,rgba(114,139,211,.11),transparent 72%),
    #f5f6f8;
}
.ambient-grid{opacity:.22}
.page-shell{width:min(1120px,calc(100% - 48px));padding-top:42px}
.hero{
  width:min(900px,100%);
  grid-template-columns:max-content max-content;
  justify-content:center;
  gap:clamp(30px,5vw,58px);
  margin-bottom:38px;
}
.brand-lockup{
  width:max-content;
  min-height:0;
  padding:0;
  gap:12px;
  border:0;
  border-radius:0;
  background:transparent;
  box-shadow:none;
}
.brand-lockup::after{display:none}
.brand-mark{
  width:43px;height:43px;border-radius:13px;
  background:linear-gradient(145deg,#5279e9,#765ad0);
  box-shadow:0 5px 14px rgba(74,91,173,.16);
}
.brand-name{font-size:27px;letter-spacing:-.07em}
.hero-copy{width:max-content;max-width:100%;text-align:left}
.hero-affiliation{color:#7b8498;font-size:10px;letter-spacing:.07em}
.hero h1{font-size:clamp(38px,4.5vw,54px);letter-spacing:-.06em}
.hero h1 i{letter-spacing:-.045em}
.hero-copy p{margin-top:10px;color:#7e899d;font-size:11px;letter-spacing:.14em}
.hero-line{
  left:50%;right:auto;bottom:-19px;width:min(760px,100%);height:1px;
  transform:translateX(-50%);
  background:linear-gradient(90deg,transparent,rgba(90,119,204,.24) 18%,rgba(131,99,194,.2) 82%,transparent);
  opacity:1;
}
.glass-panel{
  border-color:rgba(58,75,111,.10);
  border-radius:22px;
  background:rgba(255,255,255,.91);
  box-shadow:0 12px 34px rgba(32,48,83,.055),inset 0 1px 0 rgba(255,255,255,.95);
  backdrop-filter:blur(10px);
}
.game-layout{gap:18px}
.game-card{width:min(840px,100%);padding:26px 30px 22px}
.board-wrap{width:min(100%,520px)}
.side-column{width:min(840px,100%);gap:14px}
.leaderboard,.mode-card{padding:20px}
.board{
  border-radius:17px;
  background:linear-gradient(145deg,#e5eaf3,#dfe5f0 56%,#e8e5f1);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.9),0 12px 28px rgba(43,59,103,.11);
}
.cell{border-radius:10px;background:rgba(255,255,255,.36)}
.tile-inner{border-radius:10px;box-shadow:0 6px 13px rgba(39,58,108,.11),inset 0 1px 0 rgba(255,255,255,.9)}
.scorebar>div{background:#f7f8fb}
.scorebar .timer{background:linear-gradient(135deg,#f1f5fc,#f7f3fb)}
.guide{background:#f7f8fb}
@media(max-width:800px){
  .page-shell{width:min(650px,calc(100% - 28px));padding-top:28px}
  .hero{width:100%;grid-template-columns:170px minmax(0,1fr);gap:24px}
  .brand-lockup{width:170px;min-height:68px;padding:10px 12px;border:1px solid rgba(93,113,178,.16);border-radius:17px;background:rgba(255,255,255,.72);box-shadow:0 8px 20px rgba(44,63,119,.06)}
  .brand-lockup::after{display:block}
  .brand-mark{width:42px;height:42px}
  .brand-name{font-size:24px}
  .hero-copy{width:auto;text-align:left}
  .hero-affiliation{white-space:normal}
  .hero h1,.hero-copy p{justify-content:flex-start}
  .game-card,.side-column{width:100%}
}
@media(max-width:540px){
  .page-shell{width:calc(100% - 18px);padding-top:23px}
  .hero{grid-template-columns:1fr;gap:14px;margin-bottom:30px}
  .brand-lockup{width:max-content;min-height:0;padding:9px 13px 9px 9px}
  .hero-copy{width:100%}
  .hero h1{font-size:clamp(35px,10vw,44px)}
  .game-card{padding:17px 14px}
  .side-column{grid-template-columns:1fr}
}

/* Art direction reset: centered game pavilion, calm typography, deliberate whitespace. */
:root{
  --navy:#192443;--ink:#26324d;--muted:#7c879b;--blue:#4c70df;--violet:#7858c8;
  --line:rgba(39,54,87,.10);
}
body{
  color:var(--ink);
  background:
    radial-gradient(ellipse at 50% 0%,rgba(108,130,190,.10),transparent 48%),
    #f3f4f6;
}
.ambient-grid{display:none}
.page-shell{width:min(100% - 40px,1040px);padding:38px 0 64px}
.hero{
  width:100%;display:flex;flex-direction:column;align-items:center;gap:17px;
  margin:0 auto 34px;text-align:center;
}
.brand-lockup{
  order:0;width:auto;min-height:0;padding:0;gap:10px;
  border:0;border-radius:0;background:transparent;box-shadow:none;
}
.brand-lockup::after{display:none}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:#526fce;box-shadow:0 4px 10px rgba(69,91,161,.16);
}
.brand-mark svg{width:18px;height:18px}
.brand-name{font-size:23px;letter-spacing:-.075em}
.hero-copy{width:auto;max-width:100%;text-align:center}
.hero-affiliation{margin-bottom:9px;color:#7b8496;font-size:10px;letter-spacing:.1em}
.hero h1{justify-content:center;gap:13px;font-size:clamp(36px,5vw,54px);line-height:1;letter-spacing:-.065em}
.hero h1 i{letter-spacing:-.055em;background:none;color:#536fce;-webkit-text-fill-color:#536fce}
.hero-copy p{justify-content:center;margin-top:9px;color:#828b9d;font-size:11px;letter-spacing:.16em}
.hero-copy p::before{width:18px;height:1px;background:#aeb9d5}
.hero-line{
  left:50%;right:auto;bottom:-18px;width:min(620px,84%);height:1px;
  transform:translateX(-50%);opacity:1;
  background:linear-gradient(90deg,transparent,rgba(90,108,154,.18),transparent);
}
.game-layout{width:100%;display:flex;flex-direction:column;align-items:center;gap:16px}
.game-card,.side-column{width:min(760px,100%);margin-inline:auto}
.glass-panel{
  border:1px solid rgba(37,52,83,.085);border-radius:20px;
  background:rgba(255,255,255,.94);
  box-shadow:0 8px 28px rgba(35,47,75,.055);
  backdrop-filter:none;
}
.game-card{padding:24px 30px 22px}
.topbar{margin-bottom:16px}
.mode-switch{padding:3px;border:1px solid #e8ebf1;border-radius:9px;background:#f4f5f8}
.mode-button{padding:8px 17px;color:#7c879a;font-size:13px}
.mode-button.active{color:#23345f;box-shadow:0 2px 7px rgba(40,55,90,.10)}
.duration-control{color:#7b8598}
.duration-box{border-color:#e4e8ef;background:#fff}
.scorebar{gap:9px;margin-bottom:14px}
.scorebar>div{padding:10px 13px;border:1px solid #edf0f4;border-radius:10px;background:#f8f9fb}
.scorebar span{color:#8791a3;font-size:10px;letter-spacing:.025em}
.scorebar strong{color:#253454;font-size:25px;font-variant-numeric:tabular-nums}
.scorebar .timer{background:#f3f5fb}
.timer strong,.timer small{color:#526dc2}
.board-wrap{width:min(100%,500px)}
.board{
  border-radius:15px;padding:10px;--gap:10px;
  background:#dfe4ee;
  box-shadow:inset 0 1px 2px rgba(36,52,87,.08),0 8px 18px rgba(39,55,92,.09);
}
.cell{border-radius:8px;background:rgba(255,255,255,.43);box-shadow:none}
.tile-inner{border-radius:8px;box-shadow:0 3px 8px rgba(39,58,108,.10),inset 0 1px 0 rgba(255,255,255,.8)}
.tile.tile-2 .tile-inner{background:#fbfcff}
.tile.tile-4 .tile-inner{background:#e9eef9}
.tile.tile-8 .tile-inner{background:linear-gradient(145deg,#7194e4,#5578d0)}
.tile.tile-16 .tile-inner{background:linear-gradient(145deg,#677bd5,#575eb8)}
.tile.tile-32 .tile-inner{background:linear-gradient(145deg,#9272cd,#7657b8)}
.tile.tile-64 .tile-inner{background:linear-gradient(145deg,#b36bc2,#9655a8)}
.tile.tile-128 .tile-inner,.tile.tile-256 .tile-inner{background:linear-gradient(145deg,#d17cae,#bb6595)}
.tile.tile-512 .tile-inner,.tile.tile-1024 .tile-inner,.tile.tile-2048 .tile-inner,.tile.tile-super .tile-inner{background:linear-gradient(145deg,#e0a56d,#cf805e)}
.tile.tile-2048 .tile-inner{background:linear-gradient(145deg,#e7b668,#dc8e69);box-shadow:0 0 20px rgba(218,153,102,.27),0 4px 10px rgba(39,58,108,.12)}
.game-overlay{border-radius:15px;background:rgba(243,246,251,.76)}
.overlay-content{box-shadow:0 12px 32px rgba(42,55,85,.12)}
.game-actions{margin:16px 0}.pending-result-button{border:1px solid #d7c9ff;border-radius:10px;padding:11px 15px;color:#6840c8;background:#f3efff;font-size:12px;font-weight:850;transition:.18s}.pending-result-button:hover{background:#e9e1ff;transform:translateY(-1px)}
.primary-button{background:#526fce;box-shadow:0 5px 12px rgba(72,95,168,.17)}
.primary-button:hover{background:#4663bf;box-shadow:0 7px 16px rgba(72,95,168,.22)}
.secondary-button{background:#f0f2f6}
.guide{border:1px solid #edf0f4;border-radius:9px;background:#fafbfc;color:#737f94}
.side-column{grid-template-columns:minmax(0,1.35fr) minmax(220px,.85fr);gap:12px}
.leaderboard,.mode-card{padding:18px}
.side-title{margin-bottom:12px;color:#283654;font-size:16px}
.leaderboard li{border-color:rgba(60,76,110,.06);border-radius:8px;background:#f8f9fb}
.leaderboard li:first-child{background:#f3f4fb;border-color:rgba(79,99,163,.10)}
.leader-bar,.leader-bar i{border-radius:99px}
.mode-row{border-color:#eef0f4}
.result-dialog{box-shadow:0 20px 70px rgba(20,31,59,.22)}
@media(max-width:800px){
  .page-shell{width:min(650px,calc(100% - 28px));padding-top:28px}
  .hero{width:100%;display:flex;align-items:center;gap:14px;margin-bottom:32px}
  .brand-lockup{width:auto;min-height:0;padding:0;border:0;border-radius:0;background:transparent;box-shadow:none}
  .brand-lockup::after{display:none}
  .hero-copy{width:auto;text-align:center}
  .hero h1,.hero-copy p{justify-content:center}
  .game-card,.side-column{width:100%}
}
@media(max-width:560px){
  .page-shell{width:calc(100% - 18px);padding-top:23px}
  .hero{gap:12px;margin-bottom:27px}
  .brand-name{font-size:21px}
  .hero-affiliation{font-size:9px;letter-spacing:.045em}
  .hero h1{gap:9px;font-size:clamp(34px,9.5vw,42px)}
  .game-card{padding:16px 13px}
  .topbar{gap:8px}
  .mode-button{padding:8px 12px}
  .scorebar{gap:5px}
  .scorebar>div{padding:9px 7px}
  .scorebar strong{font-size:21px}
  .board{padding:8px;--gap:8px}
  .cell{border-radius:7px}
  .tile-inner{border-radius:7px}
  .side-column{grid-template-columns:1fr}
}

/* The college names are a quiet credit; the game title keeps the header clear. */
.hero-affiliation{display:none}
.event-credit{
  width:min(760px,100%);
  margin:28px auto 0;
  padding-top:14px;
  border-top:1px solid rgba(39,54,87,.08);
  color:#9aa2b1;
  font-size:10px;
  font-weight:600;
  letter-spacing:.08em;
  text-align:center;
}
.event-credit span{padding:0 7px;color:#b1b8c5}
@media(max-width:560px){.event-credit{margin-top:22px;font-size:9px;letter-spacing:.04em}}

/* A tactile segmented control and a brief spatial turn for mode changes. */
.mode-switch{
  position:relative;isolation:isolate;gap:0;padding:4px;border:1px solid #e5e8ef;
  border-radius:12px;background:#eef0f4;box-shadow:inset 0 1px 2px rgba(25,36,67,.045);
}
.mode-switch::before{
  content:"";position:absolute;z-index:-1;top:4px;bottom:4px;left:4px;
  width:calc(50% - 4px);border:1px solid rgba(41,57,93,.07);border-radius:9px;
  background:#fff;box-shadow:0 2px 6px rgba(31,43,70,.11),0 1px 1px rgba(31,43,70,.04);
  transition:transform 420ms cubic-bezier(.2,.8,.2,1);
}
.mode-switch.is-duo::before{transform:translateX(100%)}
.mode-button{
  position:relative;z-index:1;min-width:82px;border-radius:9px;padding:8px 16px;
  color:#818a9b;transition:color 220ms ease,transform 220ms ease;
}
.mode-button.active{color:#1d2b4c;background:transparent;box-shadow:none}
.mode-button:active{transform:scale(.97)}
.board-wrap{transform-style:preserve-3d;backface-visibility:hidden;will-change:transform,opacity}
.board-wrap.turn-out{animation:board-turn-out 150ms cubic-bezier(.4,0,.7,.2) both}
.board-wrap.turn-in{animation:board-turn-in 360ms cubic-bezier(.16,1,.3,1) both}
@keyframes board-turn-out{
  to{opacity:.28;filter:blur(2px);transform:perspective(1100px) rotateY(-76deg) translateX(-18px) scale(.96)}
}
@keyframes board-turn-in{
  from{opacity:.28;filter:blur(2px);transform:perspective(1100px) rotateY(76deg) translateX(18px) scale(.96)}
  to{opacity:1;filter:blur(0);transform:perspective(1100px) rotateY(0) translateX(0) scale(1)}
}
.duration-control{gap:9px;color:#737f94}
.duration-label{font-size:12px;font-weight:650}
.duration-box{
  gap:0;padding:3px;border-color:#e3e7ef;border-radius:11px;background:#f7f8fa;
  box-shadow:inset 0 1px 2px rgba(28,42,72,.035);
}
.duration-box button{
  display:grid;place-items:center;width:30px;height:30px;padding:0;border:0;border-radius:8px;
  color:#68758d;background:transparent;font-size:18px;font-weight:500;line-height:1;
  transition:background 160ms ease,color 160ms ease,transform 160ms ease;
}
.duration-box button:hover{color:#344d8a;background:#fff}
.duration-box button:active{transform:scale(.9)}
.duration-box input{
  width:38px;padding:5px 0;color:#243457;background:transparent;text-align:center;
  font-size:14px;font-weight:750;font-variant-numeric:tabular-nums;
}
.duration-box input::-webkit-inner-spin-button,.duration-box input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}
.duration-box input[type=number]{-moz-appearance:textfield}
.duration-box em{padding:0 7px 0 2px;color:#8993a4;font-size:11px}
@media(max-width:560px){
  .mode-button{min-width:68px;padding:8px 12px}
  .duration-box button{width:27px;height:29px}
  .board-wrap.turn-out{animation-duration:120ms}
}
@media(prefers-reduced-motion:reduce){
  .mode-switch::before,.mode-button,.duration-box button{transition:none}
  .board-wrap.turn-out,.board-wrap.turn-in{animation:none}
}
.result-rank{
  min-height:18px;margin:-8px 0 16px;padding:8px 10px;border-radius:8px;
  color:#66748e;background:#f4f6fa;font-size:11px;line-height:1.5;text-align:center;
}
.leader-meta{color:#909aab;font-size:10px;font-weight:600;letter-spacing:.01em}
.leader-main{gap:4px}
@media(max-width:560px){.result-rank{font-size:10px}}

/* Distinct but restrained mode palettes: cool focus for solo, violet collaboration for duo. */
.board{
  transition:background .42s cubic-bezier(.2,.8,.2,1),box-shadow .42s ease;
}
.board.mode-solo{
  background:linear-gradient(145deg,#dce7f8 0%,#dbe4f3 55%,#e4e8f3 100%);
}
.board.mode-solo .cell{background:rgba(255,255,255,.44)}
.board.mode-duo{
  background:linear-gradient(145deg,#e8e1f5 0%,#e4e0f0 55%,#eee3ec 100%);
}
.board.mode-duo .cell{background:rgba(255,255,255,.40)}
.board.mode-duo .tile-inner.tile-2{background:#fcf9ff}
.board.mode-duo .tile-inner.tile-4{background:#eee8fa}
@media(prefers-reduced-motion:reduce){.board{transition:none}}

/* Touch-first board interaction for phones and tablets. */
.board{
  touch-action:none;
  -webkit-user-select:none;
  user-select:none;
}

/* Keep the board gesture self-contained on touch devices. */
.board{overscroll-behavior:contain;-webkit-tap-highlight-color:transparent}

/* Touch devices get a direct gesture cue instead of a keyboard diagram. */
.touch-device .keys{display:none}
.touch-device .guide{justify-content:center;text-align:center}

/* Upstream 2048 motion: transform-only travel and inner appear/pop keyframes. */
.tile {
  left: 0 !important;
  top: 0 !important;
  transform: translate3d(
    calc(var(--col) * (var(--unit) + var(--gap))),
    calc(var(--row) * (var(--unit) + var(--gap))),
    0
  ) !important;
  transition: transform 100ms ease-in-out !important;
  will-change: transform;
}
.tile-new { z-index: 2; }
.tile-new .tile-inner {
  animation: upstream-appear 200ms ease 100ms both !important;
}
@keyframes upstream-appear {
  0% { opacity: 0; transform: scale(0); }
  100% { opacity: 1; transform: scale(1); }
}
.tile-merged { z-index: 3; }
.tile-merged .tile-inner {
  z-index: 20;
  animation: upstream-pop 200ms ease 100ms both !important;
}
@keyframes upstream-pop {
  0% { transform: scale(0); }
  50% { transform: scale(1.2); }
  100% { transform: scale(1); }
}

/* Upstream HTMLActuator position classes. Percentages are relative to the
   wrapper itself, so every tile keeps the exact size of its grid cell. */
.tile.tile-position-1-1{transform:translate3d(0,0,0)!important}
.tile.tile-position-2-1{transform:translate3d(calc(100% + var(--gap)),0,0)!important}
.tile.tile-position-3-1{transform:translate3d(calc(200% + var(--gap) + var(--gap)),0,0)!important}
.tile.tile-position-4-1{transform:translate3d(calc(300% + var(--gap) + var(--gap) + var(--gap)),0,0)!important}
.tile.tile-position-1-2{transform:translate3d(0,calc(100% + var(--gap)),0)!important}
.tile.tile-position-2-2{transform:translate3d(calc(100% + var(--gap)),calc(100% + var(--gap)),0)!important}
.tile.tile-position-3-2{transform:translate3d(calc(200% + var(--gap) + var(--gap)),calc(100% + var(--gap)),0)!important}
.tile.tile-position-4-2{transform:translate3d(calc(300% + var(--gap) + var(--gap) + var(--gap)),calc(100% + var(--gap)),0)!important}
.tile.tile-position-1-3{transform:translate3d(0,calc(200% + var(--gap) + var(--gap)),0)!important}
.tile.tile-position-2-3{transform:translate3d(calc(100% + var(--gap)),calc(200% + var(--gap) + var(--gap)),0)!important}
.tile.tile-position-3-3{transform:translate3d(calc(200% + var(--gap) + var(--gap)),calc(200% + var(--gap) + var(--gap)),0)!important}
.tile.tile-position-4-3{transform:translate3d(calc(300% + var(--gap) + var(--gap) + var(--gap)),calc(200% + var(--gap) + var(--gap)),0)!important}
.tile.tile-position-1-4{transform:translate3d(0,calc(300% + var(--gap) + var(--gap) + var(--gap)),0)!important}
.tile.tile-position-2-4{transform:translate3d(calc(100% + var(--gap)),calc(300% + var(--gap) + var(--gap) + var(--gap)),0)!important}
.tile.tile-position-3-4{transform:translate3d(calc(200% + var(--gap) + var(--gap)),calc(300% + var(--gap) + var(--gap) + var(--gap)),0)!important}
.tile.tile-position-4-4{transform:translate3d(calc(300% + var(--gap) + var(--gap) + var(--gap)),calc(300% + var(--gap) + var(--gap) + var(--gap)),0)!important}

/* Result card: a quiet, editorial finish for the end-of-round handoff. */
.result-dialog{
  width:min(430px,calc(100% - 28px));
  max-width:calc(100% - 28px);
  padding:0;
  border:0;
  border-radius:26px;
  overflow:visible;
  background:transparent;
  box-shadow:0 30px 90px rgba(17,31,71,.24);
}
.result-dialog::backdrop{
  background:rgba(18,29,62,.52);
  backdrop-filter:blur(14px) saturate(.84);
}
.result-card{
  position:relative;
  overflow:hidden;
  margin:0;
  padding:34px 32px 28px;
  border:1px solid rgba(91,111,167,.14);
  border-radius:26px;
  background:
    radial-gradient(180px 130px at 100% 0,rgba(118,91,229,.11),transparent 72%),
    linear-gradient(180deg,#fff 0%,#fbfcff 100%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.98);
}
.result-card::before{
  content:"";
  position:absolute;
  top:0;left:32px;right:32px;height:3px;
  border-radius:0 0 99px 99px;
  background:linear-gradient(90deg,#3d72ed,#8361df);
}
.result-card::after{
  content:"2048";
  position:absolute;
  right:-9px;bottom:-22px;
  color:rgba(61,90,170,.045);
  font-size:82px;font-weight:950;letter-spacing:-.12em;
  pointer-events:none;
}
.close-button{
  position:absolute;z-index:2;top:17px;right:17px;
  display:grid;place-items:center;
  width:35px;height:35px;padding:0;
  border:1px solid rgba(102,122,172,.16);
  border-radius:11px;
  color:#7d8eae;
  background:rgba(247,249,253,.82);
  outline:0;
  transition:background .18s ease,color .18s ease,transform .18s ease;
}
.close-button:hover{color:#31456f;background:#eef2fa;transform:rotate(4deg)}
.close-button:focus-visible{box-shadow:0 0 0 3px rgba(67,105,225,.18)}
.close-button svg{width:17px;height:17px;stroke-width:1.8}
.result-label{
  position:relative;z-index:1;
  display:block;
  margin:0 0 10px;
  color:#7659d4;
  font-size:11px;font-weight:850;letter-spacing:.16em;
}
.result-card h2{
  position:relative;z-index:1;
  margin:0 48px 23px 0;
  color:#17274e;
  font-size:clamp(29px,7vw,39px);
  line-height:1.05;letter-spacing:-.075em;
}
.result-numbers{
  position:relative;z-index:1;
  gap:10px;margin:0 0 16px;
}
.result-numbers div{
  min-height:102px;
  padding:16px 17px 14px;
  border:1px solid rgba(98,120,177,.11);
  border-radius:16px;
  background:linear-gradient(145deg,#f7f9fe,#f1f4fb);
}
.result-numbers div:first-child{background:linear-gradient(145deg,#f3f7ff,#edf2fc)}
.result-numbers span{
  margin:0 0 11px;
  color:#8292b2;
  font-size:11px;font-weight:750;letter-spacing:.06em;
}
.result-numbers strong{
  color:#17274e;
  font-size:34px;line-height:1;
  letter-spacing:-.07em;font-variant-numeric:tabular-nums;
}
.result-rank{
  position:relative;z-index:1;
  min-height:0;
  margin:0 0 23px;
  padding:10px 12px;
  border:1px solid rgba(101,119,167,.1);
  border-radius:11px;
  color:#637391;
  background:#f6f8fc;
  font-size:12px;line-height:1.4;font-weight:650;
}
.result-card label{
  position:relative;z-index:1;
  display:block;margin:0 0 7px;
  color:#536684;font-size:12px;font-weight:800;letter-spacing:.03em;
}
.result-card input{
  position:relative;z-index:1;
  height:48px;
  margin:0 0 12px;
  padding:0 14px;
  border:1px solid #dce4f2;
  border-radius:14px;
  color:#17274e;
  background:rgba(255,255,255,.8);
  font-size:14px;
  outline:0;
  transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
}
.result-card input::placeholder{color:#a0abc0}
.result-card input:focus{border-color:#6b84dc;background:#fff;box-shadow:0 0 0 4px rgba(70,105,220,.11)}
.result-card .primary-button{
  position:relative;z-index:1;
  height:48px;padding:0;
  border-radius:14px;
  background:linear-gradient(110deg,#426fda,#7157ce);
  box-shadow:0 10px 20px rgba(65,91,183,.2);
  font-size:15px;letter-spacing:.02em;
}
.result-card .primary-button:hover{background:linear-gradient(110deg,#3866d0,#6549c4);box-shadow:0 13px 24px rgba(65,91,183,.25)}
.submit-hint{
  position:relative;z-index:1;
  margin:11px 0 0;
  color:#9aa6bb;
  font-size:11px;line-height:1.5;text-align:center;
}
@media(max-width:560px){
  .result-card{padding:29px 21px 23px;border-radius:23px}
  .result-card::before{left:22px;right:22px}
  .result-card h2{margin-bottom:19px}
  .result-numbers div{min-height:94px;padding:14px 13px 13px}
  .result-numbers strong{font-size:30px}
}

/* Leaderboard: make the top five read like a small, calm podium. */
.leaderboard ol{align-items:stretch}
.leaderboard li{
  position:relative;
  overflow:hidden;
  border-color:rgba(83,104,157,.11);
  background:linear-gradient(135deg,#fafbfe,#f3f6fb);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.leaderboard li:hover{
  transform:translateY(-1px);
  border-color:rgba(78,106,194,.22);
  box-shadow:0 7px 16px rgba(43,66,124,.08);
}
.leaderboard li::before{
  display:grid;
  place-items:center;
  width:26px;height:26px;
  border-radius:9px;
  color:#7f8daa;
  background:#edf1f8;
  font-size:10px;font-weight:900;
  font-variant-numeric:tabular-nums;
}
.leaderboard li.rank-1{
  min-height:88px;
  padding:14px 13px;
  border-color:rgba(112,93,221,.16);
  background:linear-gradient(110deg,#f0efff 0%,#faf7ff 72%,#fff 100%);
  box-shadow:inset 3px 0 0 #8067dd;
}
.leaderboard li.rank-1::before{
  width:30px;height:30px;
  color:#fff;
  background:linear-gradient(145deg,#e2b761,#b77d35);
  box-shadow:0 4px 9px rgba(185,127,49,.2);
}
.leaderboard li.rank-1 .leader-name{color:#354676;font-size:14px}
.leaderboard li.rank-1 .leader-score{color:#182b58;font-size:20px}
.leaderboard li.rank-1 .leader-bar{height:5px}
.leaderboard li.rank-1 .leader-bar i{background:linear-gradient(90deg,#6b73e8,#a45bd5)}
.leaderboard li.rank-2::before{
  color:#536783;
  background:linear-gradient(145deg,#e8edf5,#cbd5e5);
}
.leaderboard li.rank-3::before{
  color:#8c5b3a;
  background:linear-gradient(145deg,#f2dfd1,#ddb38d);
}
.leaderboard li.rank-2 .leader-bar i{background:linear-gradient(90deg,#6b91d7,#7396c9)}
.leaderboard li.rank-3 .leader-bar i{background:linear-gradient(90deg,#c48e68,#d6a45f)}
.leaderboard li.rank-4::before,.leaderboard li.rank-5::before{background:#f0f2f6}
.leaderboard li.rank-4 .leader-bar i,.leaderboard li.rank-5 .leader-bar i{background:linear-gradient(90deg,#8da4d4,#9ca9bf)}
.leaderboard .leader-score small{display:block;color:#8b98b2;font-size:9px}
@media(max-width:560px){
  .leaderboard li.rank-1{min-height:82px;padding:12px 11px}
  .leaderboard li.rank-1 .leader-score{font-size:18px}
  .leaderboard ol{grid-template-columns:1fr}
  .leaderboard li.rank-top{grid-column:auto}
}

/* Editorial leaderboard treatment: quiet rules and typography instead of capsules. */
.leaderboard,.mode-card{border-radius:14px}
.leader-actions{gap:0}
.icon-button{
  border:0;
  border-bottom:1px solid transparent;
  border-radius:0;
  padding:4px 3px 3px;
  color:#8b95a7;
  background:transparent;
  box-shadow:none;
  font-size:10px;
  font-weight:650;
  letter-spacing:.02em;
}
.icon-button + .icon-button{
  margin-left:10px;
  padding-left:11px;
  border-left:1px solid #e7eaf0;
}
.icon-button:hover,.icon-button.danger:hover{
  color:#3f568e;
  border-bottom-color:#667bb8;
  background:transparent;
}
.icon-button.danger:hover{color:#9b5368;border-bottom-color:#c58a9b}
.icon-button svg{width:12px;height:12px;stroke-width:1.65}
.leaderboard ol{gap:0}
.leaderboard li,
.leaderboard li.rank-1{
  border:0;
  border-top:1px solid #eceef3;
  border-radius:0;
  background:transparent;
  box-shadow:none;
  transform:none;
  transition:background .18s ease;
}
.leaderboard li:last-child{border-bottom:1px solid #eceef3}
.leaderboard li:hover,
.leaderboard li.rank-1:hover{border-color:#eceef3;box-shadow:none;transform:none;background:#fafbfc}
.leaderboard li::before,
.leaderboard li.rank-1::before{
  width:auto;height:auto;
  border-radius:0;
  color:#9aa3b2;
  background:transparent;
  box-shadow:none;
  font-family:"IBM Plex Mono","SFMono-Regular",Consolas,monospace;
  font-size:11px;
  font-weight:600;
  letter-spacing:.04em;
}
.leaderboard li.rank-1{
  min-height:92px;
  padding:16px 0 14px;
  background:linear-gradient(90deg,rgba(91,111,177,.055),transparent 72%);
}
.leaderboard li.rank-1::before{color:#536ba6;font-size:18px;font-weight:500}
.leaderboard li.rank-1 .leader-name{color:#2e3c5f;font-size:15px;font-weight:800}
.leaderboard li.rank-1 .leader-score{color:#1f315b;font-size:23px;font-weight:850}
.leaderboard li.rank-2::before{color:#68758d;background:transparent}
.leaderboard li.rank-3::before{color:#7e6d62;background:transparent}
.leaderboard li.rank-4::before,.leaderboard li.rank-5::before{color:#9aa3b2;background:transparent}
.leaderboard .leader-score small{color:#9aa3b2;font-size:9px;font-weight:600}
.leader-bar,.leaderboard li.rank-1 .leader-bar{height:2px;border-radius:0;background:#e7e9ee}
.leader-bar i,.leaderboard li.rank-1 .leader-bar i,
.leaderboard li.rank-2 .leader-bar i,.leaderboard li.rank-3 .leader-bar i,
.leaderboard li.rank-4 .leader-bar i,.leaderboard li.rank-5 .leader-bar i{
  height:100%;border-radius:0;background:#667bb8;transition:width .3s ease
}
.leaderboard li.rank-1 .leader-bar i{background:#536ba6}
.mode-chip{
  width:31px;height:auto;padding:3px 0 3px 8px;
  border-left:2px solid #5c77d3;
  border-radius:0;
  color:#5269b2;
  background:transparent!important;
  font-family:"IBM Plex Mono","SFMono-Regular",Consolas,monospace;
  font-size:10px;font-weight:700;letter-spacing:.06em;
}
.mode-chip.violet{border-left-color:#8b63b7;color:#76549e}

/* Result sheet: spacious Chinese typography and a restrained editorial rhythm. */
.result-card{
  padding:38px 34px 30px;
  font-family:"PingFang SC","Noto Sans SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-synthesis:none;
  text-rendering:optimizeLegibility;
}
.result-card::before{left:34px;right:34px;height:2px;border-radius:0;background:#5e73c7}
.result-card::after{right:0;bottom:-18px;color:rgba(61,90,170,.028);font-size:76px;font-weight:800;letter-spacing:-.08em}
.close-button{
  top:18px;right:19px;width:34px;height:34px;
  border:0;border-radius:0;color:#7e8eaa;background:transparent;
}
.close-button:hover{color:#31456f;background:transparent;transform:none}
.result-label{
  margin:0 0 12px;
  color:#6678bd;
  font-size:11px;font-weight:700;letter-spacing:.2em;
}
.result-card h2{
  margin:0 54px 29px 0;
  color:#1b2b55;
  font-size:clamp(31px,7vw,40px);
  font-weight:720;
  line-height:1.16;
  letter-spacing:-.035em;
}
.result-numbers{gap:0;margin:0 0 22px}
.result-numbers div,
.result-numbers div:first-child{
  min-height:108px;
  padding:15px 18px 14px 0;
  border:0;
  border-top:1px solid #e1e6ef;
  border-bottom:1px solid #e1e6ef;
  border-radius:0;
  background:transparent;
}
.result-numbers div+div{padding-left:22px;border-left:1px solid #e1e6ef}
.result-numbers span{
  margin:0 0 13px;
  color:#8794ad;
  font-size:11px;font-weight:650;letter-spacing:.08em;
}
.result-numbers strong{
  color:#243761;
  font-size:36px;font-weight:720;letter-spacing:-.045em;
}
.result-rank{
  margin:0 0 28px;
  padding:11px 0;
  border:0;
  border-top:1px solid #e1e6ef;
  border-bottom:1px solid #e1e6ef;
  border-radius:0;
  color:#65748f;
  background:transparent;
  font-size:12px;font-weight:650;line-height:1.5;
}
.result-card label{margin:0 0 8px;color:#586b8c;font-size:11px;font-weight:700;letter-spacing:.06em}
.result-card input{
  height:50px;margin:0 0 14px;padding:0 15px;
  border:1px solid #dce3ee;border-radius:8px;
  color:#243761;background:#fff;font-size:14px;
}
.result-card input:focus{border-color:#6680cf;box-shadow:0 0 0 3px rgba(70,105,220,.09)}
.result-card .primary-button{
  height:50px;border-radius:9px;
  background:#4a68c8;
  box-shadow:0 8px 17px rgba(65,91,183,.16);
  font-size:15px;font-weight:700;letter-spacing:.04em;
}
.result-card .primary-button:hover{background:#405bb3;box-shadow:0 10px 20px rgba(65,91,183,.2)}
.submit-hint{margin:12px 0 0;color:#929caf;font-size:10px;font-weight:500;line-height:1.6}
@media(max-width:560px){
  .result-card{padding:34px 23px 25px;border-radius:20px}
  .result-card::before{left:23px;right:23px}
  .result-card h2{margin-right:42px;margin-bottom:25px;font-size:clamp(29px,8.5vw,36px)}
  .result-numbers div,.result-numbers div:first-child{min-height:94px;padding:13px 13px 12px 0}
  .result-numbers div+div{padding-left:15px}
  .result-numbers strong{font-size:31px}
}

/* Leaderboard refinement: compact score table with natural row rhythm. */
.leaderboard ol{
  align-content:start;
  align-items:start;
  grid-auto-rows:max-content;
}
.leaderboard li,
.leaderboard li.rank-1{
  align-self:start;
  min-height:70px;
}
.leaderboard li.rank-1{min-height:84px}
.leaderboard li::before,
.leaderboard li.rank-1::before{
  content:counter(rank);
  justify-self:start;
  color:#7c89a3;
  font-size:14px;
  font-weight:500;
  letter-spacing:0;
}
.leaderboard li.rank-1::before{color:#536ba6;font-size:18px;font-weight:650}
.leaderboard li.rank-1{
  padding:14px 0 13px 11px;
  border-left:2px solid #6075bb;
  background:linear-gradient(90deg,rgba(91,111,177,.06),transparent 68%);
}
.leader-bar,
.leaderboard li.rank-1 .leader-bar{
  width:min(100%,260px);
  height:1px;
  margin-top:1px;
  background:#e5e8ef;
}
.leader-bar i,
.leaderboard li.rank-1 .leader-bar i{height:100%;background:#6c7fb6}
.leaderboard li.rank-1 .leader-bar i{background:#536ba6}
@media(max-width:560px){
  .leaderboard li.rank-1{min-height:78px;padding-left:9px}
  .leader-bar,.leaderboard li.rank-1 .leader-bar{width:min(100%,220px)}
}

/* Stronger leaderboard hierarchy: one hero score, then quiet supporting cards. */
.leaderboard ol{
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:10px;
  align-content:start;
  align-items:stretch;
}
.leaderboard li,
.leaderboard li.rank-1{
  min-height:78px;
  padding:13px 14px;
  border:1px solid #e1e6ef;
  border-radius:13px;
  background:#f8f9fc;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.9);
  color:#263a64;
}
.leaderboard li:hover,
.leaderboard li.rank-1:hover{
  border-color:#c9d3e9;
  background:#f4f7fc;
  box-shadow:0 8px 18px rgba(48,70,119,.08);
  transform:translateY(-1px);
}
.leaderboard li.rank-1{
  grid-column:1 / -1;
  min-height:122px;
  padding:18px 20px;
  border:0;
  border-radius:16px;
  background:#304c88;
  box-shadow:0 15px 30px rgba(39,63,116,.18),inset 0 1px 0 rgba(255,255,255,.15);
  color:#fff;
}
.leaderboard li::before,
.leaderboard li.rank-1::before{
  content:counter(rank);
  width:auto;height:auto;
  justify-self:start;
  border-radius:0;
  background:transparent;
  box-shadow:none;
  color:#6076ae;
  font-family:"SFMono-Regular","Roboto Mono",Consolas,monospace;
  font-size:18px;font-weight:650;letter-spacing:0;
}
.leaderboard li.rank-1::before{color:rgba(255,255,255,.72);font-size:34px;font-weight:500}
.leaderboard li.rank-2{border-top:2px solid #7185bd}
.leaderboard li.rank-3{border-top:2px solid #9c79b8}
.leaderboard li.rank-4,.leaderboard li.rank-5{border-top:2px solid #cbd4e5}
.leaderboard li.rank-2{background:#f3f6fd;border-color:#d7e0f1}
.leaderboard li.rank-3{background:#faf5fc;border-color:#e8dff0}
.leaderboard li.rank-4,.leaderboard li.rank-5{background:#f7f8fb}
.leaderboard li.rank-1 .leader-main{gap:7px}
.leaderboard li.rank-1 .leader-name{color:#fff;font-size:20px;font-weight:800}
.leaderboard li.rank-1 .leader-meta{color:rgba(255,255,255,.68);font-size:11px}
.leaderboard li.rank-1 .leader-score{color:#fff;font-size:31px;font-weight:800}
.leaderboard li.rank-1 .leader-score small{color:rgba(255,255,255,.68)}
.leaderboard li.rank-1 .leader-bar{width:min(100%,360px);height:3px;margin-top:2px;background:rgba(255,255,255,.22)}
.leaderboard li.rank-1 .leader-bar i{background:#fff}
.leaderboard li:not(.rank-1) .leader-name{color:#354b79;font-size:14px;font-weight:800}
.leaderboard li:not(.rank-1) .leader-meta{color:#8190aa;font-size:10px}
.leaderboard li:not(.rank-1) .leader-score{color:#233762;font-size:18px;font-weight:800}
.leaderboard li:not(.rank-1) .leader-score small{color:#8b98b0}
.leaderboard li:not(.rank-1) .leader-bar{width:100%;height:2px;margin-top:2px;background:#e0e6f0}
.leaderboard li:not(.rank-1) .leader-bar i{background:#657db9}
.result-card #submit-hint,
#submit-hint{
  position:relative;z-index:1;
  margin:12px 0 0;
  color:#8d98aa;
  font-family:"PingFang SC","Noto Sans SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:11px;font-weight:500;line-height:1.6;
  letter-spacing:.01em;text-align:center;
}
@media(min-width:561px){
  .leaderboard li.rank-2:last-child,
  .leaderboard li.rank-3:last-child,
  .leaderboard li.rank-4:last-child,
  .leaderboard li.rank-5:last-child{grid-column:1 / -1}
}
@media(max-width:560px){
  .leaderboard ol{grid-template-columns:1fr;gap:8px}
  .leaderboard li.rank-1{grid-column:auto;min-height:108px;padding:16px 15px}
  .leaderboard li.rank-1 .leader-score{font-size:27px}
}

/* Poster palette: electric blue and violet accents with a white architectural base. */
.leaderboard li.rank-1{
  background:linear-gradient(135deg,#153b9d 0%,#1d65df 62%,#6725c7 100%);
  box-shadow:0 16px 30px rgba(31,70,166,.22),inset 0 1px 0 rgba(255,255,255,.18);
}
.leaderboard li.rank-1::after{
  content:"";
  position:absolute;right:0;top:0;width:38%;height:2px;
  background:#d52be1;
  opacity:.9;
}
.leaderboard li.rank-2{background:#f2f7ff;border-top-color:#2a79ef;border-color:#d5e2f7}
.leaderboard li.rank-3{background:#fcf5ff;border-top-color:#9b36d4;border-color:#eadcf3}
.leaderboard li.rank-4,.leaderboard li.rank-5{background:#f7f8ff;border-top-color:#8a79db}
.leaderboard li.rank-2 .leader-bar i{background:#2b79ed}
.leaderboard li.rank-3 .leader-bar i{background:#9a36d3}
.leaderboard li.rank-4 .leader-bar i,.leaderboard li.rank-5 .leader-bar i{background:#8373d0}

/* The board rests slightly smaller in the ready state and settles into place on start. */
.board-wrap{
  transform-origin:50% 50%;
  transition:transform .58s cubic-bezier(.16,1,.3,1),opacity .32s ease;
}
.board-wrap.ready-stage{
  transform:scale(.9);
  opacity:.9;
}
body{
  background:
    radial-gradient(72% 42% at 50% -8%,rgba(58,119,241,.12),transparent 72%),
    radial-gradient(48% 38% at 100% 100%,rgba(139,45,220,.08),transparent 72%),
    #f4f7fc;
}
@media(prefers-reduced-motion:reduce){
  .board-wrap{transition:none}
}

/* Final visual pass: poster-inspired ink blue, quiet surfaces, and a restrained score table. */
:root{
  --navy:#132a56;
  --ink:#1b2f55;
  --blue:#2e67b1;
  --violet:#735aa8;
  --line:#e1e7f0;
}
body{color:var(--ink);background:#f6f8fb}
.ambient-grid{opacity:.34}
.ambient-grid:before{background:radial-gradient(circle,rgba(63,107,185,.09),transparent 68%)}
.ambient-grid:after{background:radial-gradient(circle,rgba(115,90,168,.055),transparent 68%)}
.glass-panel{border-color:#e1e7f0;background:rgba(255,255,255,.9);box-shadow:0 14px 40px rgba(30,54,96,.075)}
.brand-mark{background:#193d79;box-shadow:0 8px 18px rgba(25,61,121,.18)}
.hero h1 i{color:#536fae}
.hero-line{height:1px;background:linear-gradient(90deg,#9aaecd 0%,#6888b7 28%,#587aa9 50%,#6888b7 72%,#9aaecd 100%);opacity:.8}
.mode-switch{background:#eef2f7;border-color:#e1e7ef}
.mode-switch::before{background:#fff;box-shadow:0 3px 9px rgba(29,52,91,.12)}
.mode-button.active{color:#193665}
.primary-button{background:#315d9d;box-shadow:0 7px 16px rgba(49,93,157,.2)}
.primary-button:hover{box-shadow:0 9px 20px rgba(49,93,157,.24)}
.board{background:linear-gradient(135deg,#dce8f7,#d3def0 52%,#e4def1);box-shadow:inset 0 1px 0 rgba(255,255,255,.95),0 15px 35px rgba(40,65,112,.14)}
.board.mode-duo{background:linear-gradient(135deg,#e2def2,#d8e0f2 52%,#e7e4f2)}
.guide{border-color:#e5eaf1;background:#f8fafc}
.guide-tools{display:flex;align-items:center;gap:12px}
.wasd-control{display:inline-flex;align-items:center;gap:6px;color:#6a7890;font-size:10px;font-weight:800;letter-spacing:.04em;cursor:pointer;user-select:none}
.wasd-control input{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.wasd-track{position:relative;width:28px;height:16px;border:1px solid #d2dbe8;border-radius:8px;background:#e9eef5;transition:background .18s ease,border-color .18s ease}
.wasd-track i{position:absolute;top:2px;left:2px;width:10px;height:10px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(29,52,91,.24);transition:transform .18s cubic-bezier(.2,.8,.2,1)}
.wasd-control input:checked + .wasd-track{border-color:#5d79ab;background:#5d79ab}
.wasd-control input:checked + .wasd-track i{transform:translateX(12px)}
.wasd-control input:focus-visible + .wasd-track{outline:2px solid rgba(49,93,157,.28);outline-offset:2px}
.wasd-control input:disabled + .wasd-track{opacity:.45}
.leaderboard{padding:20px 21px 16px}
.leaderboard .side-title{margin-bottom:12px}
.leaderboard ol{display:grid;grid-template-columns:1fr;gap:0}
.leaderboard li,.leaderboard li.rank-1{position:relative;display:grid;grid-template-columns:25px minmax(0,1fr) auto;min-height:64px;padding:11px 0;border:0;border-bottom:1px solid #e9edf3;border-radius:0;background:transparent!important;box-shadow:none;transform:none}
.leaderboard li:hover,.leaderboard li.rank-1:hover{background:#fbfcfe!important;border-color:#e1e7ef;box-shadow:none;transform:none}
.leaderboard li.rank-1{min-height:82px;margin-bottom:3px;padding:14px 12px;border-left:3px solid #315d9d;border-bottom:0;border-radius:10px;background:#eef4fc!important}
.leaderboard li::before,.leaderboard li.rank-1::before{color:#8090aa;font-family:"SFMono-Regular","Roboto Mono",Consolas,monospace;font-size:14px;font-weight:600}
.leaderboard li.rank-1::before{color:#315d9d;font-size:18px}
.leaderboard li.rank-1::after{display:none}
.leaderboard li.rank-1 .leader-name{color:#203b68;font-size:17px;font-weight:800}
.leaderboard li.rank-1 .leader-score{color:#1d3763;font-size:26px;font-weight:850}
.leaderboard li.rank-1 .leader-score small{color:#7990b2}
.leaderboard li:not(.rank-1) .leader-name{color:#3a4e70;font-size:13px;font-weight:750}
.leaderboard li:not(.rank-1) .leader-score{color:#264271;font-size:16px;font-weight:800}
.leaderboard li:not(.rank-1) .leader-score small{color:#8c9ab0}
.leaderboard .leader-meta{color:#8795aa;font-size:10px}
.leader-bar,.leaderboard li.rank-1 .leader-bar{width:100%;height:2px;margin-top:4px;border-radius:1px;background:#dfe6f0}
.leader-bar i,.leaderboard li.rank-1 .leader-bar i{background:#5577ad}
.leaderboard li.rank-2 .leader-bar i,.leaderboard li.rank-3 .leader-bar i,.leaderboard li.rank-4 .leader-bar i,.leaderboard li.rank-5 .leader-bar i{background:#7d92b7}
.leaderboard-empty{padding:18px 0 7px}
.leaderboard .ranking-rule{margin:0 0 12px;color:#6f809c;font-size:11px;text-align:left;letter-spacing:.02em}
.mode-card{padding:20px 21px}
.mode-chip{width:30px;height:26px;border:1px solid #cbd7e8;border-radius:6px;color:#315d9d;background:#f2f6fb!important;font-size:10px}
.mode-chip.violet{border-color:#d9d0e9;color:#735aa8;background:#f7f4fb!important}
@media(max-width:560px){.guide-tools{gap:8px}.wasd-control{font-size:9px}.leaderboard{padding:18px 16px 14px}}
.leaderboard li.rank-2,.leaderboard li.rank-3,.leaderboard li.rank-4,.leaderboard li.rank-5{border-top:0!important;border-color:transparent #e9edf3 #e9edf3!important}

/* Calm final-seconds cue: a small state change instead of a bouncing panel. */
.scorebar .timer{position:relative;overflow:hidden}
.timer.urgent{animation:none;background:#f7f3f3!important;border-color:#eadfdf!important}
.timer.urgent strong,.timer.urgent small{color:#a15e5b}
.timer.urgent strong{animation:timer-pulse 1.15s ease-in-out infinite}
.timer.urgent::after{content:"最后 5 秒";position:absolute;right:12px;top:9px;color:#b07b78;font-size:9px;font-weight:700;letter-spacing:.03em;opacity:.9}
@keyframes timer-pulse{0%,100%{opacity:1}50%{opacity:.68}}

/* Compact control rail for the optional keyboard layout. */
.guide{min-height:42px;padding:8px 12px;color:#7c899e;font-size:11px;letter-spacing:.01em}
.guide-tools{gap:10px;flex-shrink:0}
.wasd-control{height:25px;padding-left:10px;border-left:1px solid #e2e8f0;gap:7px;color:#60718b;font-size:10px;font-weight:800;letter-spacing:.08em}
.wasd-track{width:25px;height:14px;border-radius:7px;background:#edf1f6}
.wasd-track i{top:2px;left:2px;width:8px;height:8px}
.wasd-control input:checked + .wasd-track i{transform:translateX(11px)}
.touch-device .guide{justify-content:space-between;text-align:left}
@media(max-width:420px){.guide{padding-inline:10px}.guide-tools{gap:7px}.wasd-control{padding-left:8px}.timer.urgent::after{right:8px;font-size:8px}}
/* Keep supporting metadata readable on the navy-blue leader card. */
.leaderboard li.rank-1 .leader-meta{color:#6f83a5}
.leaderboard li.rank-1 .leader-bar{background:#d3deee}

/* Give the supporting rail a clear purpose while keeping the board as the focal point. */
.mode-card{display:flex;flex-direction:column}
.session-intro{display:flex;align-items:flex-end;justify-content:space-between;padding:4px 0 14px;border-bottom:1px solid #e9edf3}
.session-intro span{color:#8795aa;font-size:10px;font-weight:700;letter-spacing:.08em}
.session-intro strong{color:#29446f;font-size:13px;font-weight:800;letter-spacing:-.02em}
.mode-card .mode-row{padding:12px 0}
.flow-list{display:grid;gap:0;padding:10px 0 0;margin:5px 0 0;border-top:1px solid #e9edf3;list-style:none;counter-reset:flow}
.flow-list li{display:grid;grid-template-columns:34px minmax(0,1fr);gap:8px;align-items:center;padding:12px 0;border-bottom:1px solid #edf0f4}
.flow-list li>span{color:#8292ad;font-family:"SFMono-Regular","Roboto Mono",Consolas,monospace;font-size:12px;font-weight:700}
.flow-list strong{display:block;color:#3b5279;font-size:12px;font-weight:800}
.flow-list small{display:block;margin-top:3px;color:#8795aa;font-size:10px;line-height:1.35}
.session-note{margin:auto 0 0;padding-top:16px;color:#8795aa;font-size:11px;line-height:1.45}
@media(max-width:800px){.session-note{margin-top:14px}}

/* Controlled color accents keep the scoreboard lively without turning it into a palette. */
.leaderboard li.rank-2{background:#f3f7ff!important;border-left:3px solid #8ba9d8!important}
.leaderboard li.rank-3{background:#faf5ff!important;border-left:3px solid #b08acb!important}
.leaderboard li.rank-4{background:#fff9f1!important;border-left:3px solid #d0a46f!important}
.leaderboard li.rank-5{background:#f2faf7!important;border-left:3px solid #87b9a8!important}
.leaderboard li.rank-2::before{color:#557fb9}
.leaderboard li.rank-3::before{color:#9466b1}
.leaderboard li.rank-4::before{color:#aa7942}
.leaderboard li.rank-5::before{color:#5d9881}
.leaderboard li.rank-2 .leader-bar i{background:#7095ca}
.leaderboard li.rank-3 .leader-bar i{background:#9b72ba}
.leaderboard li.rank-4 .leader-bar i{background:#c08b50}
.leaderboard li.rank-5 .leader-bar i{background:#6fa58f}
.mode-card .mode-row-solo,.mode-card .mode-row-duo{margin:5px 0;padding:11px 10px;border-top:0;border-radius:9px}
.mode-card .mode-row-solo{border-left:3px solid #7197cf;background:linear-gradient(90deg,#f2f7ff,#fff)}
.mode-card .mode-row-duo{border-left:3px solid #a381c4;background:linear-gradient(90deg,#faf5ff,#fff)}
.mode-card .mode-row-solo p{color:#466b9f}
.mode-card .mode-row-duo p{color:#79579b}
.mode-card .mode-chip.blue{border-color:#b4c9e7;color:#3969aa;background:#eaf2ff!important}
.mode-card .mode-chip.violet{border-color:#d5c3e6;color:#845da8;background:#f4ecfb!important}
.flow-list li:nth-child(1)>span{color:#5d82b9}
.flow-list li:nth-child(2)>span{color:#8765ad}
.flow-list li:nth-child(3)>span{color:#a67d4c}
.flow-list li:nth-child(1){border-left:2px solid #d8e5f7;padding-left:9px}
.flow-list li:nth-child(2){border-left:2px solid #e6d9f0;padding-left:9px}
.flow-list li:nth-child(3){border-left:2px solid #f0e2cf;padding-left:9px}

/* Remove visual noise from the accent pass: color belongs to surfaces and markers, not rails. */
.leaderboard li.rank-2,.leaderboard li.rank-3,.leaderboard li.rank-4,.leaderboard li.rank-5{
  margin-bottom:6px;border:0!important;border-radius:9px;background:#fafbfe!important
}
.leaderboard li.rank-3{background:#fcfaff!important}
.leaderboard li.rank-4{background:#fffdf9!important}
.leaderboard li.rank-5{background:#fafdfb!important}
.leaderboard li.rank-2 .leader-bar i,.leaderboard li.rank-3 .leader-bar i,.leaderboard li.rank-4 .leader-bar i,.leaderboard li.rank-5 .leader-bar i{background:#8198bd}
.mode-card .mode-row-solo,.mode-card .mode-row-duo{border-left:0;background:#f7faff}
.mode-card .mode-row-duo{background:#fbf8fe}
.flow-list{border-top:0}
.flow-list li,.flow-list li:nth-child(1),.flow-list li:nth-child(2),.flow-list li:nth-child(3){border:0;padding:9px 0;margin-bottom:3px}
.flow-list li>span{display:grid;place-items:center;width:28px;height:26px;border-radius:7px;background:#eef4fc;color:#5d82b9}
.flow-list li:nth-child(2)>span{background:#f4edfa;color:#8765ad}
.flow-list li:nth-child(3)>span{background:#fbf3e8;color:#a67d4c}

/* Final restraint pass: remove rails and separators that compete with the content. */
.leaderboard li,.leaderboard li.rank-1,
.leaderboard li:hover,.leaderboard li.rank-1:hover{
  border-left:0!important;
  border-bottom:0!important;
  border-color:transparent!important;
}
.session-intro{border-bottom:0}
.wasd-control{border-left:0}

/* Quiet, unframed collaboration icons with a clear text hierarchy. */
.mode-card{
  display:block;
  align-self:start;
  height:auto!important;
  min-height:0;
  padding:20px 21px;
}
.mode-card .side-title{margin-bottom:8px}
.mode-card .mode-row{
  display:flex;
  align-items:center;
  gap:15px;
  padding:14px 0;
  border-top:0;
}
.mode-card .mode-row + .mode-row{border-top:1px solid #e8edf4}
.mode-card .mode-row p{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:4px 14px;
  margin:0;
  color:#63718a;
  font-size:13px;
  line-height:1.6;
  font-weight:400;
}
.mode-card .mode-row strong{
  color:#304462;
  font-size:14px;
  font-weight:600;
  white-space:nowrap;
}
.mode-card .mode-row p span{white-space:nowrap}
.mode-card .mode-person-icon{
  display:block;
  flex:0 0 24px;
  width:24px;
  height:24px;
  color:#647b9b;
}