:root{--bg-0: #0b0e1a;--bg-1: #131a30;--bg-glow: #1b2547;--ink: #eef1ff;--ink-dim: #9aa6d6;--accent: #7c5cff;--board-bg: rgba(255, 255, 255, .04);--board-cell: rgba(255, 255, 255, .05);--board-line: rgba(255, 255, 255, .06);--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px)}*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{height:100%;overflow:hidden;overscroll-behavior:none;touch-action:none;user-select:none;-webkit-user-select:none}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;color:var(--ink);background:radial-gradient(120% 80% at 50% -10%,var(--bg-glow) 0%,transparent 55%),linear-gradient(180deg,var(--bg-1) 0%,var(--bg-0) 100%);background-attachment:fixed}#app{position:fixed;top:0;left:0;right:0;height:100%;height:var(--app-height, 100dvh);display:flex;flex-direction:column;align-items:center;justify-content:flex-start;padding:calc(var(--safe-top) + 8px) 0 calc(var(--safe-bottom) + 8px)}.hud{width:100%;max-width:520px;display:flex;align-items:center;justify-content:space-between;padding:6px 20px 2px;gap:12px}.hud .score-block{display:flex;flex-direction:column;line-height:1.05}.hud .score-label{font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-dim);font-weight:700}.hud .score-value{font-size:30px;font-weight:800;font-variant-numeric:tabular-nums;text-shadow:0 0 18px rgba(124,92,255,.45)}.hud .best{text-align:right}.hud .best .score-value{font-size:18px;color:var(--ink-dim);text-shadow:none}.brand{font-size:13px;font-weight:800;letter-spacing:.05em;text-align:center}.brand .b-boom{color:var(--accent);text-shadow:0 0 16px rgba(124,92,255,.6)}.icon-btn{appearance:none;border:none;background:#ffffff0f;color:var(--ink);width:38px;height:38px;border-radius:12px;font-size:18px;display:grid;place-items:center;cursor:pointer;transition:transform .08s ease,background .15s ease}.icon-btn:active{transform:scale(.92);background:#ffffff1f}.right-cluster{display:flex;align-items:center;gap:10px}.stage-wrap{flex:1 1 auto;width:100%;position:relative;min-height:0}#stage{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none}.overlay{position:fixed;inset:0;display:grid;place-items:center;background:#050710b8;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:10}.overlay.show{opacity:1;pointer-events:auto}.panel{width:min(86vw,380px);background:linear-gradient(180deg,#222c52e6,#12182eeb);border:1px solid rgba(255,255,255,.08);border-radius:24px;padding:28px 24px 24px;text-align:center;box-shadow:0 30px 80px #00000080,0 0 0 1px #7c5cff14;transform:translateY(12px) scale(.96);transition:transform .3s cubic-bezier(.2,.9,.3,1.2)}.overlay.show .panel{transform:translateY(0) scale(1)}.panel h1{font-size:26px;font-weight:800;margin-bottom:4px}.panel .sub{color:var(--ink-dim);font-size:14px;margin-bottom:18px}.panel .big-score{font-size:54px;font-weight:800;font-variant-numeric:tabular-nums;text-shadow:0 0 30px rgba(124,92,255,.5);line-height:1}.panel .big-score-label{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-dim);font-weight:700;margin-bottom:18px}.panel .row{display:flex;gap:10px;justify-content:center;margin-top:6px}.btn{appearance:none;border:none;border-radius:16px;padding:15px 26px;font-size:16px;font-weight:800;cursor:pointer;color:#fff;background:linear-gradient(180deg,#8a6bff,#6a45f5);box-shadow:0 10px 24px #6a45f566;transition:transform .08s ease,filter .15s ease;flex:1}.btn:active{transform:scale(.95);filter:brightness(1.08)}.btn.ghost{background:#ffffff14;box-shadow:none;flex:0 0 auto}.settings-row{display:flex;align-items:center;justify-content:space-between;padding:14px 4px;border-bottom:1px solid rgba(255,255,255,.07);font-size:16px;font-weight:600}.settings-row:last-of-type{border-bottom:none}.toggle{width:52px;height:30px;border-radius:999px;background:#ffffff1f;position:relative;transition:background .2s ease;cursor:pointer;flex:0 0 auto}.toggle.on{background:var(--accent)}.toggle:after{content:"";position:absolute;top:3px;left:3px;width:24px;height:24px;border-radius:50%;background:#fff;transition:transform .2s cubic-bezier(.2,.9,.3,1.2)}.toggle.on:after{transform:translate(22px)}.hidden{display:none!important}