.game-nav-back{--gnb-size:clamp(48px,7vw,62px);display:inline-flex;flex-shrink:0;padding:0;border:none;background:transparent;cursor:pointer;text-decoration:none;color:inherit;line-height:0;-webkit-tap-highlight-color:transparent}.game-nav-back--size-sm{--gnb-size:clamp(44px,6vw,56px)}.game-nav-back--size-xs{--gnb-size:44px}.game-nav-back:disabled{cursor:not-allowed;opacity:.55}.game-nav-back__disc{position:relative;width:var(--gnb-size);height:var(--gnb-size);display:block;transition:transform .14s ease,filter .14s ease}.game-nav-back:hover .game-nav-back__disc{transform:scale(1.05);filter:drop-shadow(0 5px 12px rgba(0,0,0,.38))}.game-nav-back:active .game-nav-back__disc{transform:scale(.94)}.game-nav-back__rim{position:absolute;inset:0;border-radius:50%;background:conic-gradient(from -28deg,#fff8dc 0deg,#f7d56a 48deg,#d4a12a 120deg,#9a6c14 200deg,#f0c850 280deg,#fff8dc 1turn);box-shadow:inset 0 2px 5px rgba(255,255,255,.72),inset 0 -4px 7px rgba(70,42,6,.5),0 4px 10px rgba(0,0,0,.35)}.game-nav-back__rim:after{content:"";position:absolute;inset:3.5%;border-radius:50%;box-shadow:inset 0 0 0 1.5px rgba(55,28,8,.35);pointer-events:none}.game-nav-back__stud{position:absolute;width:13%;height:13%;border-radius:2px;background:linear-gradient(145deg,#fff6c8,#f2c84a 42%,#c08818);box-shadow:inset 0 1px 1px rgba(255,255,255,.85),0 1px 2px rgba(40,22,4,.55);transform:rotate(45deg);z-index:2}.game-nav-back__stud--n{top:1.5%;left:50%;margin-left:-6.5%}.game-nav-back__stud--e{right:1.5%;top:50%;margin-top:-6.5%}.game-nav-back__stud--s{bottom:1.5%;left:50%;margin-left:-6.5%}.game-nav-back__stud--w{left:1.5%;top:50%;margin-top:-6.5%}.game-nav-back__face{position:absolute;inset:11%;border-radius:50%;background:var(
    --gnb-face,radial-gradient(circle at 34% 28%,#d070ff 0,#8f3fc8 34%,#5a2288 58%,#2a0c48 100%)
  );box-shadow:inset 0 3px 10px rgba(0,0,0,.38),inset 0 -2px 4px rgba(255,255,255,.12);overflow:hidden}.game-nav-back__sparkles{position:absolute;inset:0;border-radius:50%;opacity:.92;background:radial-gradient(1.2px 1.2px at 24% 32%,rgba(255,255,255,.95),transparent),radial-gradient(1.5px 1.5px at 70% 24%,rgba(255,248,200,.9),transparent),radial-gradient(1px 1px at 58% 68%,rgba(255,255,255,.75),transparent),radial-gradient(1.3px 1.3px at 32% 72%,rgba(255,230,255,.8),transparent),radial-gradient(.9px .9px at 82% 52%,rgba(255,255,255,.7),transparent),radial-gradient(1px 1px at 18% 54%,rgba(255,255,220,.65),transparent);pointer-events:none}.game-nav-back__arrow{position:absolute;left:50%;top:50%;width:54%;height:54%;transform:translate(-48%,-50%);z-index:3;pointer-events:none;object-fit:contain;filter:drop-shadow(0 1.5px 2px rgba(20,8,0,.4))}.game-nav-back--default{--gnb-face:radial-gradient(circle at 34% 28%,#d070ff 0%,#8f3fc8 34%,#5a2288 58%,#2a0c48 100%)}.game-nav-back--fire{--gnb-face:radial-gradient(circle at 34% 28%,#ffb070 0%,#e85a28 38%,#a82810 62%,#5a1408 100%)}.game-nav-back--water{--gnb-face:radial-gradient(circle at 34% 28%,#8ed8ff 0%,#3a98e8 38%,#1e5a9a 62%,#0c2a4a 100%)}.game-nav-back--earth{--gnb-face:radial-gradient(circle at 34% 28%,#e0b888 0%,#a87848 38%,#6a4428 62%,#3a2414 100%)}.game-nav-back--air{--gnb-face:radial-gradient(circle at 34% 28%,#f2fbff 0%,#9eccef 40%,#5f8eb8 65%,#3a5878 100%)}.game-nav-back--lightning{--gnb-face:radial-gradient(circle at 34% 28%,#fff090 0%,#f0c820 40%,#c89810 62%,#6a5808 100%)}.game-nav-back--plant{--gnb-face:radial-gradient(circle at 34% 28%,#b8f0a0 0%,#58b848 38%,#2a7828 62%,#143814 100%)}.game-nav-back--neutral{--gnb-face:radial-gradient(circle at 34% 28%,#f0f4fc 0%,#c0c8dc 40%,#8a94ac 65%,#4a5268 100%)}.game-nav-back--nest{--gnb-face:radial-gradient(circle at 34% 28%,#b8f0a0 0%,#58b848 38%,#2a7828 62%,#143814 100%)}.game-nav-back--battle{--gnb-face:radial-gradient(circle at 34% 28%,#ffb070 0%,#e85a28 38%,#a82810 62%,#5a1408 100%)}