:root{--bg1:#6c5ce7;--bg2:#00cec9;--card:#ffffff;--ink:#2d2b55;--muted:#8b88ad;--line:#e7e5f7;--plus:#ff9f43;--minus:#4aa3ff;--mul:#ff6b81;--div:#1dd1a1;--good:#26de81;--bad:#fc5c65;--gold:#ffc93c;--shadow:rgba(45,43,85,.18)}*{margin:0;padding:0;box-sizing:border-box}body{min-height:100vh;font-family:Noto Sans JP,sans-serif;color:var(--ink);background:linear-gradient(135deg,var(--bg1),var(--bg2));background-attachment:fixed}.app{max-width:480px;margin:0 auto;padding:24px 16px 60px}.screen{display:none}.screen.active{display:block;animation:fadeUp .4s cubic-bezier(.22,1,.36,1)}@keyframes fadeUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}.card{background:var(--card);border-radius:22px;padding:28px 24px;box-shadow:0 14px 40px var(--shadow);position:relative}.title-chara{position:relative;display:inline-block;width:100%;text-align:center}.t-icon{text-align:center;margin-bottom:2px;position:relative;z-index:1}.t-icon img{width:110px;height:auto;filter:drop-shadow(0 6px 10px rgba(45,43,85,.25));animation:iconBounce 2s ease-in-out infinite}@keyframes iconBounce{0%,to{transform:translateY(0) rotate(0)}50%{transform:translateY(-10px) rotate(-3deg)}}.floating-numbers{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:0}.float-num{position:absolute;font-family:Noto Sans JP,sans-serif;font-weight:800;opacity:0;animation:floatUp var(--dur) ease-in-out var(--delay) infinite;-webkit-user-select:none;user-select:none}@keyframes floatUp{0%{opacity:0;transform:translateY(20px) scale(.7) rotate(var(--rot))}15%{opacity:.85}70%{opacity:.6}to{opacity:0;transform:translateY(-90px) scale(1.1) rotate(var(--rot2))}}.t-main{font-family:Noto Sans JP,sans-serif;font-size:2.1rem;font-weight:700;text-align:center;margin-bottom:4px}.t-sub{font-size:.85rem;color:var(--muted);text-align:center;font-weight:700;margin-bottom:18px}.t-rules{background:#f4f3ff;border-radius:14px;padding:16px 18px;margin-bottom:20px;font-size:.85rem;line-height:1.9;color:var(--ink)}.t-rules b{color:var(--bg1)}.btn{width:100%;padding:15px;border:none;border-radius:14px;font-family:Noto Sans JP,sans-serif;font-size:1.02rem;font-weight:600;cursor:pointer;transition:all .15s}.bp{background:linear-gradient(135deg,var(--bg1),#8e7cf0);color:#fff;box-shadow:0 6px 16px #6c5ce766}.bp:hover{transform:translateY(-2px);box-shadow:0 9px 20px #6c5ce773}.bp:active{transform:translateY(0)}.bg{background:#f1f0fb;color:var(--ink)}.bg:hover{background:#e7e5f7}.brow{display:flex;gap:10px;margin-top:10px}.brow .btn{flex:1}.mt12{margin-top:12px}.mt8{margin-top:8px}.n-title{font-family:Noto Sans JP,sans-serif;font-size:1.3rem;font-weight:700;text-align:center;margin-bottom:2px}.n-sub{font-size:.75rem;color:var(--muted);text-align:center;font-weight:700;margin-bottom:20px}.lbl{font-size:.7rem;font-weight:800;color:var(--muted);letter-spacing:2px;display:block;margin-bottom:8px}.inp{width:100%;padding:14px 16px;border:2px solid var(--line);border-radius:12px;background:#faf9ff;color:var(--ink);font-family:Noto Sans JP,sans-serif;font-size:1.05rem;font-weight:700;outline:none;transition:border-color .2s;margin-bottom:18px}.inp:focus{border-color:var(--bg1)}.g-hdr{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.g-qnum{font-family:Noto Sans JP,sans-serif;font-size:.85rem;font-weight:700;color:var(--muted)}.g-timer{font-family:Noto Sans JP,sans-serif;font-size:1.2rem;font-weight:700;color:var(--bg1);min-width:56px;text-align:right}.dots{display:flex;gap:6px;justify-content:center;margin-bottom:18px;flex-wrap:wrap}.dot{width:9px;height:9px;border-radius:50%;background:var(--line);transition:all .3s}.dot.c{background:var(--good)}.dot.w{background:var(--bad)}.dot.cur{background:var(--gold);box-shadow:0 0 0 4px #ffc93c4d}.nums{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:18px}.numtile{aspect-ratio:1;border-radius:16px;background:linear-gradient(160deg,#fff,#f4f3ff);border:2px solid var(--line);display:flex;align-items:center;justify-content:center;font-family:Noto Sans JP,sans-serif;font-size:1.7rem;font-weight:700;color:var(--ink);cursor:pointer;-webkit-user-select:none;user-select:none;transition:all .15s;position:relative}.numtile:hover{border-color:var(--bg1);transform:translateY(-2px)}.numtile.used{background:#f1f0fb;color:var(--line);border-color:var(--line);cursor:default;transform:none}.numtile.used:hover{transform:none;border-color:var(--line)}.expr-wrap{background:#f4f3ff;border-radius:14px;padding:16px;margin-bottom:16px;min-height:60px;display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:8px;transition:background .2s}.expr-wrap.shake{animation:shake .3s}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-6px)}75%{transform:translate(6px)}}.expr-wrap.ok{background:#26de812e}.expr-wrap.ng{background:#fc5c652e}.chip{font-family:Noto Sans JP,sans-serif;font-size:1.3rem;font-weight:700;color:var(--ink);background:#fff;border-radius:8px;padding:4px 10px;box-shadow:0 2px 6px var(--shadow)}.chip.op{color:#fff}.chip.op.p{background:var(--plus)}.chip.op.m{background:var(--minus)}.chip.op.x{background:var(--mul)}.chip.op.d{background:var(--div)}.expr-empty{font-size:.85rem;color:var(--muted);font-weight:700}.expr-eq{font-family:Noto Sans JP,sans-serif;font-size:1.3rem;font-weight:700;color:var(--muted)}.ops{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:14px}.opbtn{padding:16px 0;border:none;border-radius:14px;color:#fff;font-family:Noto Sans JP,sans-serif;font-size:1.5rem;font-weight:700;cursor:pointer;transition:all .15s}.opbtn.p{background:var(--plus)}.opbtn.m{background:var(--minus)}.opbtn.x{background:var(--mul)}.opbtn.d{background:var(--div)}.opbtn:hover:not(:disabled){transform:translateY(-2px);filter:brightness(1.05)}.opbtn:active:not(:disabled){transform:translateY(0)}.opbtn:disabled{opacity:.35;cursor:default}.parens{display:flex;gap:10px;justify-content:center;margin-bottom:14px}.parenbtn{width:88px;padding:12px 0;border:none;border-radius:14px;color:#fff;background:linear-gradient(135deg,var(--bg1),#8e7cf0);font-family:Noto Sans JP,sans-serif;font-size:1.3rem;font-weight:800;cursor:pointer;transition:all .15s}.parenbtn:hover:not(:disabled){transform:translateY(-2px);filter:brightness(1.05)}.parenbtn:active:not(:disabled){transform:translateY(0)}.parenbtn:disabled{opacity:.35;cursor:default}.ctrl-row{display:flex;gap:10px;margin-bottom:6px}.ctrlbtn{flex:1;padding:11px;border:2px solid var(--line);border-radius:12px;background:#fff;color:var(--muted);font-family:Noto Sans JP,sans-serif;font-size:.85rem;font-weight:700;cursor:pointer;transition:all .15s}.ctrlbtn:hover{border-color:var(--bg1);color:var(--bg1)}.hint{font-size:.72rem;color:var(--muted);text-align:center;margin-top:4px}.feedback{text-align:center;font-family:Noto Sans JP,sans-serif;font-size:1rem;font-weight:700;min-height:26px;margin-top:6px}.feedback.ok{color:var(--good)}.feedback.ng{color:var(--bad)}.r-emoji{font-size:3.2rem;text-align:center;margin-bottom:6px}.r-title{font-family:Noto Sans JP,sans-serif;font-size:1.35rem;font-weight:700;text-align:center;margin-bottom:2px}.r-sub{font-size:.8rem;color:var(--muted);text-align:center;font-weight:700;margin-bottom:16px}.r-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:16px}.r-stat{background:#f4f3ff;border-radius:14px;padding:14px;text-align:center}.r-slabel{display:block;font-size:.68rem;color:var(--muted);font-weight:800;letter-spacing:1px;margin-bottom:4px}.r-sval{font-family:Noto Sans JP,sans-serif;font-size:1.4rem;font-weight:700;color:var(--ink)}.r-log{max-height:220px;overflow-y:auto;margin-bottom:16px;border-top:1px solid var(--line);padding-top:8px}.log-row{display:flex;align-items:center;gap:8px;padding:7px 2px;font-size:.82rem;border-bottom:1px solid #f4f3ff}.log-mark{font-size:.9rem}.log-expr{flex:1;font-weight:700;color:var(--ink)}.log-res{font-weight:800}.log-res.ok{color:var(--good)}.log-res.ng{color:var(--bad)}.rk-title{font-family:Noto Sans JP,sans-serif;font-size:1.25rem;font-weight:700;text-align:center;margin-bottom:16px}.rk-list{margin-bottom:16px}.rk-row{display:flex;align-items:center;gap:12px;padding:11px 10px;border-radius:12px;margin-bottom:6px;background:#f9f9ff;animation:fadeUp .3s both}.rk-row.r1{background:linear-gradient(90deg,#fff7e0,#fff);border:1px solid #ffe08a}.rk-row.r2{background:linear-gradient(90deg,#f2f2f2,#fff);border:1px solid #ddd}.rk-row.r3{background:linear-gradient(90deg,#fbe9dd,#fff);border:1px solid #f0c9a8}.rk-num{font-family:Noto Sans JP,sans-serif;font-weight:700;width:26px;text-align:center;color:var(--muted)}.rk-name{font-weight:800;font-size:.9rem}.rk-row>div:nth-child(2){flex:1}.rk-sc{text-align:right}.rk-cor{font-family:Noto Sans JP,sans-serif;font-weight:700;color:var(--bg1)}.rk-t{font-size:.7rem;color:var(--muted)}.rk-empty{text-align:center;color:var(--muted);font-size:.85rem;padding:30px 0;font-weight:700}