:root{--primary: #00d2ff;--secondary: #9d50bb;--accent: #ffd700;--danger: #ff4757;--bg-dark: #050510;--glass: rgba(15, 15, 35, .85)}*{box-sizing:border-box;margin:0;padding:0}.app-container{min-height:100vh;background:var(--bg-dark);color:#fff;font-family:Segoe UI,system-ui,sans-serif;display:flex;flex-direction:column;background-size:cover;background-position:center;position:relative;overflow:hidden}.overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(circle at center,transparent 0%,rgba(0,0,0,.6) 100%);pointer-events:none}.loading-gate{height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;background:var(--bg-dark);color:var(--primary)}.spin-icon{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.game-header{padding:24px;display:flex;justify-content:space-between;align-items:center;z-index:10}.cloud-tag{display:flex;align-items:center;gap:8px;background:#00d2ff26;padding:8px 16px;border-radius:30px;font-size:13px;color:var(--primary);border:1px solid rgba(0,210,255,.3)}.stat-group{display:flex;gap:12px}.stat-pill{background:#ffffff14;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:8px 16px;border-radius:16px;display:flex;align-items:center;gap:8px;font-weight:800;border:1px solid rgba(255,255,255,.1)}.stage{flex:1;display:flex;align-items:center;justify-content:center;padding:20px;z-index:5}.glass-card{width:100%;max-width:500px;background:var(--glass);-webkit-backdrop-filter:blur(25px);backdrop-filter:blur(25px);border-radius:32px;padding:40px;border:1px solid rgba(255,255,255,.15);box-shadow:0 25px 50px -12px #000000b3;text-align:center}.hero-img-wrap img{width:140px;margin-bottom:24px;filter:drop-shadow(0 0 25px var(--primary))}.float-anim{animation:float 4s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-20px)}}h1{font-size:32px;margin-bottom:12px;background:linear-gradient(135deg,#fff 0%,var(--primary) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.subtitle{color:#aaa;margin-bottom:32px;line-height:1.6}.main-btn{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;border:none;padding:16px 32px;border-radius:18px;font-size:18px;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:12px;width:100%;transition:all .3s;box-shadow:0 10px 20px #00d2ff4d}.main-btn:hover:not(:disabled){transform:translateY(-3px);box-shadow:0 15px 30px #00d2ff80}.record-box{margin-top:24px;color:var(--accent);font-weight:600;font-size:14px;opacity:.8}.progress-section{margin-bottom:30px;display:flex;align-items:center;gap:15px}.track{flex:1;height:6px;background:#ffffff1a;border-radius:3px;overflow:hidden}.fill{height:100%;background:var(--primary);box-shadow:0 0 10px var(--primary)}.count{font-size:14px;font-weight:700;color:var(--primary)}.question-text{font-size:22px;margin-bottom:30px;text-align:left;line-height:1.4}.options-layout{display:grid;gap:12px}.opt-item{background:#ffffff0d;border:1px solid rgba(255,255,255,.1);padding:18px;border-radius:16px;color:#fff;text-align:left;cursor:pointer;transition:.2s;display:flex;align-items:center;gap:15px;font-size:16px}.opt-item:hover:not(:disabled){background:#ffffff1a;border-color:var(--primary)}.opt-item.is-right{background:#2ed57333!important;border-color:#2ed573!important}.opt-item.is-wrong{background:#ff475733!important;border-color:var(--danger)!important}.letter{width:32px;height:32px;background:#ffffff1a;border-radius:8px;display:flex;align-items:center;justify-content:center;font-weight:800;color:var(--primary)}.feedback-panel{margin-top:24px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);text-align:left}.tag{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:8px;font-size:12px;font-weight:700;margin-bottom:12px}.tag.success{background:#2ed57333;color:#2ed573}.tag.error{background:#ff475733;color:var(--danger)}.exp-text{font-size:14px;color:#ccc;line-height:1.6;margin-bottom:20px}.next-btn{background:#ffffff1a;color:#fff;border:1px solid rgba(255,255,255,.2);padding:12px 20px;border-radius:12px;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;width:100%;font-weight:600}.final-score{margin:30px 0}.final-score .num{font-size:72px;font-weight:900;color:var(--primary);text-shadow:0 0 30px rgba(0,210,255,.5);display:block}.final-score .label{font-size:14px;letter-spacing:4px;color:#666;font-weight:700}.action-grid{display:flex;flex-direction:column;gap:12px}.sub-btn{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.2);padding:16px;border-radius:18px;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:10px}.game-footer{padding:20px;display:flex;justify-content:center;gap:24px;opacity:.5;font-size:12px}.f-item{display:flex;align-items:center;gap:6px}