*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;user-select:none;-webkit-user-select:none}html,body{margin:0;height:100%;overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,Apple SD Gothic Neo,Pretendard,sans-serif;background:#7fc4ff;overscroll-behavior:none;touch-action:none}#root,.app{height:100vh;height:100dvh}.game{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;display:block}.hud{position:absolute;top:calc(10px + env(safe-area-inset-top,0px));left:0;right:0;display:flex;justify-content:space-between;align-items:flex-start;padding:0 14px;pointer-events:none}.hud-left{background:#ffffffd9;border-radius:12px;padding:8px 12px;display:flex;gap:6px;align-items:baseline}.hud-left strong{font-size:15px;color:#173b66}.hud-left span{font-size:12px;color:#6d7683;font-weight:700}.hud-right{display:flex;gap:8px}.hud-box{background:#ffffffd9;border-radius:12px;padding:6px 12px;text-align:center;min-width:72px}.hud-box span{display:block;font-size:10.5px;font-weight:700;color:#6d7683}.hud-box strong{font-size:17px;color:#173b66;font-variant-numeric:tabular-nums}.hud-best{background:#fff4d6e6}.center-hint{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:flex-end;justify-content:center;padding-bottom:18vh;pointer-events:none}.hint-bubble{background:#173b66d9;color:#fff;font-size:16px;font-weight:700;padding:14px 22px;border-radius:999px;animation:bob 1.6s ease-in-out infinite}.result-rank{color:#1e6fd9;font-size:13px;font-weight:700;margin-top:-4px;margin-bottom:4px}.board{width:min(340px,86vw)}.board-title{font-size:17px;color:#173b66}.board-total{margin:2px 0 6px;font-size:12px}.board-list{list-style:none;margin:0 0 8px;padding:0;max-height:42vh;overflow-y:auto;text-align:left}.board-row{display:flex;align-items:center;gap:10px;padding:7px 10px;border-radius:10px;font-size:14px}.board-row.mine{background:#e8f3ff;font-weight:700}.board-me{margin-bottom:8px}.board-rank{width:26px;text-align:right;color:#6d7683;font-variant-numeric:tabular-nums;font-weight:700;flex:none}.board-nick{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.board-meters{color:#173b66;font-weight:700;font-variant-numeric:tabular-nums}.nick-row{display:flex;gap:6px;margin-bottom:8px}.nick-input{flex:1;min-width:0;border:1px solid #d7dee8;border-radius:10px;padding:9px 12px;font-size:14px;font-family:inherit}.nick-save{flex:none;padding-left:16px;padding-right:16px}.ready-stack{display:flex;flex-direction:column;align-items:center;gap:14px}.diff-row{display:flex;gap:8px;justify-content:center;pointer-events:auto}.diff-chip{padding:8px 18px;border-radius:999px;border:1px solid rgba(255,255,255,.55);background:#ffffff38;color:#fff;font-size:13px;font-weight:700;cursor:pointer}.diff-chip.on{background:#fff;color:#173b66;border-color:#fff}.diff-chip.dark{border-color:#d7dee8;background:#fff;color:#6d7683}.diff-chip.dark.on{background:#e8f3ff;color:#1e6fd9;border-color:#9ec9f5}.coach-bubble{animation:none;background:#173b66b8;font-size:15px;transition:opacity .2s}@keyframes bob{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#0a28506b;display:flex;align-items:center;justify-content:center;padding:24px}.result{background:#fff;border-radius:22px;padding:28px 26px;width:100%;max-width:340px;text-align:center;display:flex;flex-direction:column;gap:8px}.result-label{color:#6d7683;font-size:14px;font-weight:700}.result-meters{font-size:46px;font-weight:800;color:#173b66;font-variant-numeric:tabular-nums}.result-best{color:#f5a623;font-size:14px;font-weight:700;margin-bottom:8px}.result-record{color:#f5a623;font-size:16px}.help{text-align:left}.help-title{font-size:22px;text-align:center}.help p{font-size:14.5px;color:#4e5968;line-height:1.7;margin:8px 0;text-align:center}.help ul{list-style:none;padding:0;margin:10px 0;font-size:15px;color:#333d4b;line-height:2.1}.muted{color:#8b95a1!important;font-size:13px!important}.btn{border:none;border-radius:14px;min-height:52px;font-size:16px;font-weight:700;font-family:inherit;cursor:pointer}.btn-primary{background:#3182f6;color:#fff}.btn-ghost{background:#e8f3ff;color:#1b64da}.toast{position:absolute;left:50%;top:14%;transform:translate(-50%);background:#191f28e6;color:#fff;font-size:14px;font-weight:600;padding:12px 18px;border-radius:12px;white-space:nowrap}.lang-switch{position:absolute;left:calc(10px + env(safe-area-inset-left,0px));bottom:calc(10px + env(safe-area-inset-bottom,0px));display:flex;align-items:center;gap:4px;background:#ffffffd1;border-radius:12px;padding:5px 8px;font-size:13px;line-height:1;z-index:5}.lang-switch select{border:none;background:transparent;font:inherit;font-weight:700;color:#173b66;outline:none;cursor:pointer;max-width:104px}