:root{--bg: #f4f8fb;--panel: #ffffff;--board-bg: #e7eef5;--cell-empty: #f6f9fc;--cell-border: #dbe5ee;--text: #25313f;--text-muted: #7c8a99;--accent: #34a8e0;--accent-strong: #1f8fc7;--danger: #fb7185;--shadow: 0 8px 24px rgba(40, 70, 100, .12)}*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang TC,Microsoft JhengHei,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none;touch-action:manipulation;overscroll-behavior:none;overflow:hidden}.app{max-width:520px;margin:0 auto;padding:calc(env(safe-area-inset-top) + 12px) calc(env(safe-area-inset-right) + 16px) calc(env(safe-area-inset-bottom) + 16px) calc(env(safe-area-inset-left) + 16px);min-height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:clamp(10px,2.5vh,16px)}.app-header{width:100%;display:flex;flex-direction:column;align-items:center;gap:12px}.app-title{margin:8px 0 0;font-size:clamp(20px,6vw,28px);font-weight:800;letter-spacing:.5px;color:var(--accent-strong)}.scoreboard{display:flex;gap:12px;width:100%;max-width:360px}.score-box{flex:1;background:var(--panel);border-radius:14px;padding:10px 14px;box-shadow:var(--shadow);display:flex;flex-direction:column;align-items:center}.score-label{font-size:12px;text-transform:uppercase;letter-spacing:1px;color:var(--text-muted)}.score-value{font-size:24px;font-weight:800;font-variant-numeric:tabular-nums}.play-area{width:100%;display:flex;flex-direction:column;align-items:center;gap:18px}.board-wrap{position:relative;width:100%;display:flex;justify-content:center}.board{position:relative;width:min(92vw,54vh,440px);aspect-ratio:1 / 1;display:grid;grid-template-columns:repeat(8,1fr);grid-template-rows:repeat(8,1fr);gap:0;background:var(--board-bg);padding:6px;border-radius:16px;box-shadow:var(--shadow)}.cell{border-radius:6px;border:1px solid var(--cell-border);background:var(--cell-empty);transition:background .12s ease}.cell--filled{position:relative;border:none;border-radius:42%;box-shadow:inset 0 -4px 6px #0000002e,inset 0 3px 5px #ffffff73,inset 4px 0 6px #ffffff26,inset -4px 0 6px #00000014}.cell--filled:after{content:"";position:absolute;top:14%;left:16%;width:36%;height:28%;border-radius:50%;background:#ffffff8c;filter:blur(1px);pointer-events:none}.cell--preview{border-color:var(--accent)}.cell--preview-invalid{border-color:var(--danger);background:#fb71852e!important}.cell--placed{animation:pop .22s ease}@keyframes pop{0%{transform:scale(.6)}60%{transform:scale(1.08)}to{transform:scale(1)}}.clear-layer{position:absolute;top:6px;right:6px;bottom:6px;left:6px;pointer-events:none}.clear-cell{position:absolute;border-radius:6px;animation:clearFade .32s ease forwards}@keyframes clearFade{0%{opacity:1;transform:scale(1)}40%{opacity:1;transform:scale(1.05);filter:brightness(1.6)}to{opacity:0;transform:scale(.4)}}.tray{width:100%;display:flex;justify-content:space-around;align-items:center;gap:8px;min-height:96px;background:var(--panel);border-radius:16px;padding:12px 8px;box-shadow:var(--shadow)}.tray-slot{flex:1;min-width:0;overflow:hidden;display:flex;align-items:center;justify-content:center;padding:6px;border-radius:12px;cursor:grab;touch-action:none;transition:transform .12s ease,background .12s ease}.tray-slot:active{cursor:grabbing}.tray-slot--selected{background:#34a8e01f;transform:scale(1.04)}.tray-slot--dragging{opacity:.25}.piece-cell{position:relative;border-radius:4px;background:transparent}.piece-cell--filled{border-radius:42%;box-shadow:inset 0 -3px 4px #0000002e,inset 0 2px 4px #ffffff73}.piece-cell--filled:after{content:"";position:absolute;top:14%;left:16%;width:36%;height:28%;border-radius:50%;background:#ffffff80;pointer-events:none}.drag-ghost{position:fixed;z-index:50;pointer-events:none;filter:drop-shadow(0 8px 12px rgba(40,70,100,.3));opacity:.92}.btn{font-family:inherit;font-size:15px;font-weight:700;border:none;border-radius:12px;padding:12px 22px;cursor:pointer;transition:transform .1s ease,background .15s ease}.btn:active{transform:scale(.97)}.btn--primary{background:var(--accent);color:#fff}.btn--primary:hover{background:var(--accent-strong)}.btn--ghost{background:var(--panel);color:var(--accent-strong);box-shadow:var(--shadow)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#1e2d3c73;display:flex;align-items:center;justify-content:center;padding:24px;z-index:100;animation:fadeIn .2s ease}.modal-card{background:var(--panel);border-radius:20px;padding:28px 32px;text-align:center;box-shadow:var(--shadow);width:100%;max-width:320px;animation:rise .25s ease}.modal-title{margin:0 0 16px;font-size:26px;color:var(--accent-strong)}.modal-line{margin:6px 0;font-size:16px;color:var(--text)}.modal-line strong{font-variant-numeric:tabular-nums}.modal-card .btn{margin-top:18px;width:100%}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes rise{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.kg-float{position:absolute;top:38%;left:50%;transform:translate(-50%,-50%);font-size:clamp(28px,8vw,52px);font-weight:900;color:#2fb36b;text-shadow:0 2px 0 #fff,0 4px 10px rgba(47,179,107,.35);pointer-events:none;z-index:40;animation:kgFloat 1s ease-out forwards}@keyframes kgFloat{0%{opacity:0;transform:translate(-50%,-30%) scale(.6)}25%{opacity:1;transform:translate(-50%,-55%) scale(1.1)}60%{opacity:1;transform:translate(-50%,-70%) scale(1)}to{opacity:0;transform:translate(-50%,-110%) scale(.95)}}.joylife-animation-overlay{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;z-index:999}.joylife-animation-text{font-size:clamp(40px,9vw,84px);font-weight:900;letter-spacing:.04em;background:linear-gradient(120deg,#34d399,#34a8e0,#c084fc);-webkit-background-clip:text;background-clip:text;color:transparent;text-shadow:0 8px 30px rgba(52,168,224,.25);animation:joylife-pop 1.2s ease-out forwards}.joylife-animation-text--grand{font-size:clamp(48px,12vw,120px);background:linear-gradient(120deg,#fbbf24,#fb7185,#c084fc)}.joylife-animation-sub{font-size:clamp(16px,4vw,24px);font-weight:800;color:#2fb36b;animation:joylife-pop 1.2s ease-out forwards}@keyframes joylife-pop{0%{transform:scale(.4);opacity:0}20%{transform:scale(1.15);opacity:1}45%{transform:scale(1);opacity:1}to{transform:scale(1.35);opacity:0}}