@import "https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Noto+Sans+SC:wght@400;500;700&display=swap";:root{--bg-primary:#0a0a1a;--bg-secondary:#12122a;--bg-card:#ffffff0d;--bg-card-hover:#ffffff1a;--neon-cyan:#00f0ff;--neon-pink:#ff2d75;--neon-green:#39ff14;--neon-yellow:#ffe600;--neon-orange:#ff8c00;--neon-purple:#b347ea;--neon-red:#f33;--text-primary:#e0e0ff;--text-secondary:#88a;--border-color:#ffffff1a;--font-display:"Orbitron", sans-serif;--font-body:"Noto Sans SC", sans-serif}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{font-family:var(--font-body);color:var(--text-primary);background:linear-gradient(135deg,#0a0a1a 0%,#1a0a2e 50%,#0a1a2e 100%);min-height:100vh;overflow-x:hidden}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:var(--neon-purple);border-radius:3px}.menu-container{justify-content:center;align-items:center;min-height:100vh;padding:40px 20px;display:flex}.menu-content{text-align:center;width:100%;max-width:700px}.menu-title{font-family:var(--font-display);color:var(--neon-cyan);text-shadow:0 0 20px #00f0ff80,0 0 60px #00f0ff33;margin-bottom:12px;font-size:48px;font-weight:900;animation:3s ease-in-out infinite titlePulse}@keyframes titlePulse{0%,to{text-shadow:0 0 20px #00f0ff80,0 0 60px #00f0ff33}50%{text-shadow:0 0 30px #00f0ffcc,0 0 80px #00f0ff66}}.menu-subtitle{color:var(--text-secondary);letter-spacing:2px;margin-bottom:40px;font-size:16px}.mode-grid{grid-template-columns:1fr 1fr;gap:16px;margin-bottom:32px;display:grid}.mode-card{background:var(--bg-card);border:1px solid var(--border-color);cursor:pointer;font-family:var(--font-body);color:var(--text-primary);border-radius:16px;flex-direction:column;align-items:center;gap:8px;padding:28px 20px;transition:all .3s;display:flex;position:relative;overflow:hidden}.mode-card:before{content:"";-webkit-mask-composite:xor;opacity:0;background:linear-gradient(135deg,#0000,#00f0ff4d,#0000);border-radius:16px;padding:1px;transition:opacity .3s;position:absolute;inset:0;-webkit-mask-image:linear-gradient(#fff 0 0),linear-gradient(#fff 0 0);mask-image:linear-gradient(#fff 0 0),linear-gradient(#fff 0 0);-webkit-mask-position:0 0,0 0;mask-position:0 0,0 0;-webkit-mask-size:auto,auto;mask-size:auto,auto;-webkit-mask-repeat:repeat,repeat;mask-repeat:repeat,repeat;-webkit-mask-clip:content-box,border-box;mask-clip:content-box,border-box;-webkit-mask-origin:content-box,border-box;mask-origin:content-box,border-box;-webkit-mask-composite:xor;mask-composite:exclude;-webkit-mask-source-type:auto,auto;mask-mode:match-source,match-source}.mode-card:hover:before{opacity:1}.mode-card:hover{background:var(--bg-card-hover);transform:translateY(-4px);box-shadow:0 8px 32px #00f0ff26}.mode-card.disabled{opacity:.4;cursor:not-allowed}.mode-card.disabled:hover{box-shadow:none;background:var(--bg-card);transform:none}.mode-icon{margin-bottom:4px;font-size:36px}.mode-name{font-family:var(--font-display);color:var(--neon-cyan);font-size:16px;font-weight:700}.mode-desc{color:var(--text-secondary);font-size:13px}.mode-badge{background:var(--neon-pink);color:#fff;border-radius:10px;padding:2px 8px;font-size:11px;font-weight:700;position:absolute;top:12px;right:12px}.difficulty-row{justify-content:center;gap:12px;margin-bottom:32px;display:flex}.diff-btn{background:var(--bg-card);border:1px solid var(--border-color);color:var(--text-secondary);cursor:pointer;font-size:14px;font-family:var(--font-body);border-radius:20px;padding:8px 24px;transition:all .2s}.diff-btn:hover{border-color:var(--neon-cyan);color:var(--text-primary)}.diff-btn.active{border-color:var(--neon-cyan);color:var(--neon-cyan);background:#00f0ff26}.diff-btn.active.diff-初级{border-color:var(--neon-green);color:var(--neon-green);background:#39ff1426}.diff-btn.active.diff-中级{border-color:var(--neon-orange);color:var(--neon-orange);background:#ff8c0026}.diff-btn.active.diff-高级{border-color:var(--neon-red);color:var(--neon-red);background:#ff333326}.stats-bar{color:var(--text-secondary);justify-content:center;gap:8px;font-size:14px;display:flex}.stats-sep{opacity:.4}@media (width<=600px){.menu-title{font-size:28px}.mode-grid{grid-template-columns:1fr}}.game-layout{min-height:100vh;display:flex}.game-main{flex:1;max-width:70%;padding:24px 32px;overflow-y:auto}.game-sidebar{border-left:1px solid var(--border-color);background:#0000004d;width:30%;min-width:280px;height:100vh;padding:24px;position:sticky;top:0;overflow-y:auto}.game-topbar{flex-wrap:wrap;align-items:center;gap:16px;margin-bottom:12px;display:flex}.back-btn{background:var(--bg-card);border:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;font-family:var(--font-body);border-radius:8px;padding:6px 16px;font-size:14px;transition:all .2s}.back-btn:hover{border-color:var(--neon-cyan);color:var(--neon-cyan)}.progress-text{font-family:var(--font-display);color:var(--neon-cyan);font-size:14px}.timer{color:var(--text-secondary);font-size:14px;font-family:var(--font-display)}.streak-badge{color:#fff;background:linear-gradient(135deg,#ff8c00,#ff2d75);border-radius:12px;padding:4px 12px;font-size:13px;font-weight:700;animation:.3s streakPop}@keyframes streakPop{0%{transform:scale(.8)}50%{transform:scale(1.15)}to{transform:scale(1)}}.progress-bar-outer{background:#ffffff1a;border-radius:2px;height:4px;margin-bottom:24px;overflow:hidden}.progress-bar-inner{background:linear-gradient(90deg, var(--neon-cyan), var(--neon-purple));border-radius:2px;height:100%;transition:width .3s}.feedback-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;margin-bottom:20px;padding:24px;position:relative}.card-enter{animation:.4s slideIn}.card-exit{animation:.3s forwards slideOut}@keyframes slideIn{0%{opacity:0;transform:translate(60px)}to{opacity:1;transform:translate(0)}}@keyframes slideOut{0%{opacity:1;transform:translate(0)}to{opacity:0;transform:translate(-60px)}}.card-header{justify-content:space-between;align-items:center;margin-bottom:12px;display:flex}.platform{color:var(--text-secondary);font-size:14px}.diff-tag{border-radius:10px;padding:3px 12px;font-size:12px;font-weight:700}.diff-easy{color:var(--neon-green);background:#39ff1426}.diff-medium{color:var(--neon-orange);background:#ff8c0026}.diff-hard{color:var(--neon-red);background:#ff333326}.card-meta{align-items:center;gap:12px;margin-bottom:16px;display:flex}.product-tag{color:var(--neon-purple);background:#b347ea26;border-radius:8px;padding:2px 10px;font-size:12px}.rating{font-size:14px}.feedback-text{color:var(--text-primary);border:none;margin:0;padding:0;font-size:18px;font-style:normal;line-height:1.6}.question-progress{gap:8px;margin-bottom:16px;display:flex}.qp-bar{background:#ffffff1a;border-radius:2px;flex:1;height:4px;transition:background .3s}.qp-bar.done{background:var(--neon-green)}.qp-bar.current{background:var(--neon-cyan);box-shadow:0 0 8px #00f0ff80}.question-title{font-family:var(--font-display);color:var(--neon-cyan);margin-bottom:16px;font-size:16px}.options-list{flex-direction:column;gap:10px;margin-bottom:16px;display:flex}.option-btn{border:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;text-align:left;font-size:15px;font-family:var(--font-body);background:#ffffff0a;border-radius:12px;justify-content:space-between;align-items:center;padding:14px 20px;transition:all .2s;display:flex}.option-btn:hover:not(:disabled){border-color:var(--neon-cyan);background:#00f0ff0f}.option-btn.correct{border-color:var(--neon-green);color:var(--neon-green);background:#39ff141f}.option-btn.wrong{border-color:var(--neon-red);color:var(--neon-red);background:#ff33331f}.option-btn.dimmed{opacity:.35}.opt-icon{flex-shrink:0;margin-left:12px;font-size:18px}.result-box{cursor:pointer;border-radius:12px;padding:20px;animation:.3s fadeUp;position:relative;overflow:hidden}@keyframes fadeUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.result-correct{background:#39ff1414;border:1px solid #39ff144d}.result-wrong{background:#ff333314;border:1px solid #ff33334d}.result-main{margin-bottom:6px;font-size:18px;font-weight:700}.result-correct .result-main{color:var(--neon-green)}.result-wrong .result-main{color:var(--neon-red)}.result-streak{margin-left:12px;font-size:16px}.result-answer{color:var(--neon-green);margin-bottom:6px;font-size:14px}.result-explain{color:var(--text-secondary);font-size:13px;line-height:1.5}.auto-progress{background:#ffffff1a;border-radius:2px;height:3px;margin-top:12px;overflow:hidden}.auto-progress-bar{background:var(--neon-cyan);border-radius:2px;width:100%;height:100%;animation:linear forwards progressShrink}@keyframes progressShrink{0%{width:100%}to{width:0%}}.skip-hint{text-align:center;color:var(--text-secondary);opacity:.6;margin-top:8px;font-size:12px}.sidebar-title{font-family:var(--font-display);color:var(--neon-cyan);letter-spacing:1px;margin-bottom:24px;font-size:14px}.stat-big{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.stat-label{color:var(--text-secondary);font-size:14px}.stat-value{font-family:var(--font-display);font-size:24px;font-weight:700}.score-value{color:var(--neon-purple)}.acc-green{color:var(--neon-green)}.acc-yellow{color:var(--neon-yellow)}.acc-red{color:var(--neon-red)}.streak-value{color:var(--neon-orange)}.sidebar-divider{background:var(--border-color);height:1px;margin:20px 0}.dim-stat{margin-bottom:14px}.dim-header{color:var(--text-secondary);justify-content:space-between;margin-bottom:6px;font-size:13px;display:flex}.dim-bar-outer{background:#ffffff14;border-radius:3px;height:6px;overflow:hidden}.dim-bar-inner{background:linear-gradient(90deg, var(--neon-cyan), var(--neon-green));border-radius:3px;height:100%;transition:width .3s}.time-remaining{color:var(--text-secondary);background:#00f0ff0f;border-radius:10px;justify-content:space-between;align-items:center;margin-top:24px;padding:12px 16px;font-size:14px;display:flex}.time-remaining.time-urgent{background:#ff33331a;border:1px solid #ff33334d}.time-value{font-family:var(--font-display);color:var(--neon-cyan);font-size:20px;font-weight:700}.time-urgent .time-value{color:var(--neon-red);animation:1s infinite timeBlink}@keyframes timeBlink{0%,to{opacity:1}50%{opacity:.5}}@media (width<=900px){.game-layout{flex-direction:column}.game-main{max-width:100%;padding:16px}.game-sidebar{border-left:none;border-top:1px solid var(--border-color);flex-wrap:wrap;align-items:center;gap:12px;width:100%;min-width:auto;height:auto;padding:16px;display:flex;position:relative}.sidebar-title{width:100%;margin-bottom:8px}.stat-big{text-align:center;flex-direction:column;flex:1;min-width:100px;margin-bottom:0}.stat-value{font-size:18px}.sidebar-divider{display:none}.dim-stat{flex:1;min-width:120px;margin-bottom:0}}.report-container{justify-content:center;min-height:100vh;padding:40px 20px;display:flex}.report-content{width:100%;max-width:800px}.report-title{font-family:var(--font-display);color:var(--neon-cyan);text-align:center;text-shadow:0 0 20px #00f0ff66;margin-bottom:8px;font-size:32px}.report-subtitle{text-align:center;color:var(--text-secondary);margin-bottom:36px;font-size:15px}.stat-cards{grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:40px;display:grid}.stat-card{background:var(--bg-card);text-align:center;border-radius:16px;flex-direction:column;gap:8px;padding:24px;display:flex}.sc-label{color:var(--text-secondary);font-size:14px}.sc-value{font-family:var(--font-display);font-size:36px;font-weight:900}.card-purple{border:1px solid #b347ea4d}.card-purple .sc-value{color:var(--neon-purple)}.card-green{border:1px solid #39ff144d}.card-green .sc-value{color:var(--neon-green)}.card-orange{border:1px solid #ff8c004d}.card-orange .sc-value{color:var(--neon-orange)}.radar-section{justify-content:center;margin-bottom:36px;display:flex}.radar-svg{overflow:visible}.dim-bars-section{margin-bottom:36px}.report-dim{margin-bottom:16px}.report-dim-header{color:var(--text-secondary);justify-content:space-between;margin-bottom:8px;font-size:14px;display:flex}.dim-badge{border-radius:8px;margin-left:8px;padding:2px 8px;font-size:12px}.dim-badge.best{color:var(--neon-green);background:#39ff141f}.dim-badge.weak{color:var(--neon-orange);background:#ff8c001f}.report-dim-bar-outer{background:#ffffff14;border-radius:4px;height:8px;overflow:hidden}.report-dim-bar-inner{background:linear-gradient(90deg, var(--neon-cyan), var(--neon-green));border-radius:4px;height:100%;transition:width .8s}.wrong-section{background:#ff33330a;border:1px solid #ff333326;border-radius:16px;margin-bottom:36px;padding:24px}.wrong-title{font-family:var(--font-display);color:var(--neon-red);margin-bottom:20px;font-size:16px}.wrong-item{background:#0003;border-radius:12px;margin-bottom:12px;padding:16px}.wrong-meta{gap:10px;margin-bottom:8px;display:flex}.wrong-id{font-family:var(--font-display);color:var(--neon-cyan);font-size:12px}.wrong-dim{color:var(--text-secondary);background:#ffffff0f;border-radius:6px;padding:1px 8px;font-size:12px}.wrong-text{color:var(--text-primary);margin-bottom:10px;font-size:14px;line-height:1.5}.wrong-answers{flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:8px;font-size:13px;display:flex}.your-answer{color:var(--neon-red);background:#ff33331a;border-radius:6px;padding:2px 10px}.arrow{color:var(--text-secondary)}.correct-answer{color:var(--neon-green);background:#39ff141a;border-radius:6px;padding:2px 10px}.wrong-explain{color:var(--text-secondary);font-size:12px;line-height:1.5}.report-actions{justify-content:center;gap:16px;padding-bottom:40px;display:flex}.action-btn{cursor:pointer;border:1px solid var(--border-color);font-size:16px;font-weight:700;font-family:var(--font-body);border-radius:12px;padding:12px 36px;transition:all .2s}.btn-home{background:var(--bg-card);color:var(--text-primary)}.btn-home:hover{border-color:var(--neon-cyan);color:var(--neon-cyan)}.btn-retry{color:var(--neon-red);background:#ff33331f;border-color:#ff33334d}.btn-retry:hover{border-color:var(--neon-red);background:#f333}@media (width<=600px){.report-title{font-size:22px}.stat-cards{grid-template-columns:1fr}.sc-value{font-size:28px}}.app{min-height:100vh;position:relative}