*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--bg:#e8f6fb;--surface:#ffffff;--surface2:#d0edf7;--accent:#1a7faa;--accent2:#5bb8d4;--text:#1a3a4a;--text2:#2d6070;--text3:#6aaabb;--danger:#c0392b;--success:#1a8a50;--radius:12px;--radius-sm:8px}body,html{height:100%;background:var(--bg);color:var(--text);font-family:Hiragino Kaku Gothic ProN,Noto Sans JP,sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{cursor:pointer;border:none}button,input{font-family:inherit;outline:none}.screen{min-height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;max-width:480px;margin:0 auto}.card,.screen{padding:24px 20px}.card{background:var(--surface);border-radius:var(--radius);width:100%;border:1px solid var(--surface2)}.label{font-size:11px;letter-spacing:3px;color:var(--text3);text-transform:uppercase}.heading{font-size:26px;font-weight:700;color:var(--accent);line-height:1.3}.subheading{font-size:16px;font-weight:700;color:var(--text)}.body-text{font-size:14px;color:var(--text2);line-height:1.9;white-space:pre-line}.btn-primary{width:100%;padding:14px;background:var(--accent);color:var(--surface);border-radius:var(--radius-sm);font-size:15px;font-weight:700;letter-spacing:1px;transition:opacity .2s,transform .1s}.btn-primary:hover{opacity:.9}.btn-primary:active{transform:scale(.98)}.btn-primary:disabled{opacity:.4;cursor:not-allowed;transform:none}.btn-secondary{width:100%;padding:12px;background:transparent;color:var(--text3);border:1px solid var(--surface2);border-radius:var(--radius-sm);font-size:14px;transition:background .2s}.btn-secondary:hover,.text-input{background:var(--surface2)}.text-input{width:100%;padding:14px 16px;border:2px solid var(--surface2);border-radius:var(--radius-sm);color:var(--text);font-size:20px;font-weight:700;text-align:center;letter-spacing:3px;transition:border-color .2s}.text-input:focus{border-color:var(--accent)}.text-input.error{border-color:var(--danger)}.text-input.success{border-color:var(--success)}.divider{height:1px;background:var(--surface2);width:100%;margin:16px 0}.badge{display:inline-block;padding:3px 10px;border-radius:99px;font-size:11px;font-weight:700;letter-spacing:1px}.badge-accent{background:var(--accent);color:var(--surface)}.badge-green{background:var(--success);color:white}.progress-bar{width:100%;height:4px;background:var(--surface2);border-radius:99px;overflow:hidden}.progress-fill{height:100%;background:var(--accent);border-radius:99px;transition:width .4s ease}.clue-chip{display:flex;align-items:center;gap:8px;background:var(--surface2);border:1px solid var(--accent2);border-radius:var(--radius-sm);padding:10px 14px}.clue-number{font-size:24px;font-weight:900;color:var(--accent);min-width:32px;text-align:center}.clue-desc{font-size:12px;color:var(--text3)}.msg-box{border-radius:var(--radius-sm);padding:12px 14px;font-size:13px;line-height:1.7}.msg-box.success{background:rgba(39,174,96,.15);border:1px solid var(--success);color:#7feba7}.msg-box.error{background:rgba(192,57,43,.15);border:1px solid var(--danger);color:#f1948a}.msg-box.info{background:rgba(212,162,78,.1);border:1px solid var(--accent);color:var(--accent)}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .35s ease both}@keyframes shake{0%,to{transform:translateX(0)}20%{transform:translateX(-6px)}40%{transform:translateX(6px)}60%{transform:translateX(-4px)}80%{transform:translateX(4px)}}.shake{animation:shake .4s ease}@keyframes pulse{0%,to{opacity:1}50%{opacity:.6}}.pulse{animation:pulse 1.5s ease infinite}