:root{--amber: #f5a623;--amber-light: #ffc85a;--amber-dark: #c4821a;--blue: #00c3ff;--blue-dark: #0077aa;--red: #ff3d5a;--green: #39ff8a;--bg-deep: #0a0c10;--bg-mid: #111520;--bg-surface: #171d2e;--bg-card: #1c2438;--border: rgba(245, 166, 35, .18);--border-blue: rgba(0, 195, 255, .22);--text-primary: #f0ede6;--text-secondary: #8a95a8;--text-dim: #4a5568;--font-display: "Bebas Neue", sans-serif;--font-body: "Barlow Condensed", sans-serif;--font-mono: "Share Tech Mono", monospace;--glow-amber: 0 0 20px rgba(245,166,35,.45), 0 0 60px rgba(245,166,35,.15);--glow-blue: 0 0 20px rgba(0,195,255,.4), 0 0 60px rgba(0,195,255,.12);--glow-red: 0 0 20px rgba(255,61,90,.5)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{width:100%;height:100%;overflow:hidden;background:var(--bg-deep);color:var(--text-primary);font-family:var(--font-body)}#app{width:100%;height:100vh;position:relative;overflow:hidden;background:var(--bg-deep)}#particle-canvas{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:0;opacity:.6}.noise-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.05'/%3E%3C/svg%3E");pointer-events:none;z-index:1;opacity:.55;mix-blend-mode:overlay}.scanlines{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:2;background:repeating-linear-gradient(to bottom,transparent 0px,transparent 3px,rgba(0,0,0,.07) 3px,rgba(0,0,0,.07) 4px)}#hud{position:fixed;top:0;left:0;right:0;height:56px;z-index:100;display:flex;align-items:center;justify-content:space-between;padding:0 24px;background:linear-gradient(180deg,#0a0c10f7,#0a0c1099);border-bottom:1px solid var(--border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.hud-left,.hud-right{display:flex;flex-direction:column;align-items:center;gap:1px;min-width:80px}.hud-right{align-items:flex-end}.hud-left{align-items:flex-start}.hud-label{font-family:var(--font-mono);font-size:9px;color:var(--text-dim);letter-spacing:2px;text-transform:uppercase}#hud-stage,#hud-score{font-family:var(--font-display);font-size:22px;color:var(--amber);line-height:1;text-shadow:var(--glow-amber);transition:all .3s}.hud-center{text-align:center}.hud-title{font-family:var(--font-display);font-size:18px;color:var(--text-primary);letter-spacing:4px}.hud-subtitle{font-family:var(--font-mono);font-size:8px;color:var(--text-dim);letter-spacing:3px}#progress-road{position:fixed;top:56px;left:0;right:0;height:28px;z-index:99;background:#0a0c10e6;border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 16px}#progress-track{width:100%;height:10px;background:#ffffff0d;border:1px solid var(--border);border-radius:2px;position:relative;overflow:visible}#progress-fill{height:100%;width:0%;background:linear-gradient(90deg,var(--amber-dark),var(--amber),var(--amber-light));border-radius:2px;transition:width .8s cubic-bezier(.34,1.56,.64,1);box-shadow:var(--glow-amber);position:relative;z-index:1}#progress-car{position:absolute;top:50%;transform:translateY(-50%) translate(-50%);left:0%;z-index:3;font-size:14px;color:var(--amber);text-shadow:var(--glow-amber);transition:left .8s cubic-bezier(.34,1.56,.64,1);filter:drop-shadow(0 0 6px var(--amber))}#checkpoint-markers{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none}.cp-marker{position:absolute;top:50%;transform:translate(-50%,-50%);width:6px;height:16px;background:var(--blue);border-radius:1px;box-shadow:var(--glow-blue);opacity:.7}.cp-marker.passed{background:var(--green);opacity:.5}#screen-container{position:absolute;top:0;right:0;bottom:0;left:0;padding-top:84px;overflow-y:auto;overflow-x:hidden;scrollbar-width:thin;scrollbar-color:var(--amber-dark) transparent}.screen{display:none;opacity:0;min-height:calc(100vh - 84px);padding:32px 24px 48px;position:relative;animation:none}.screen.active{display:flex;flex-direction:column;align-items:center;justify-content:center;opacity:1}.screen.fade-in{animation:fadeSlideIn .5s ease forwards}.screen.fade-out{animation:fadeSlideOut .3s ease forwards}@keyframes fadeSlideIn{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeSlideOut{0%{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(-20px)}}.btn-primary{display:inline-flex;align-items:center;gap:12px;padding:14px 40px;background:transparent;border:2px solid var(--amber);color:var(--amber);font-family:var(--font-display);font-size:22px;letter-spacing:3px;cursor:pointer;position:relative;overflow:hidden;transition:all .25s;clip-path:polygon(12px 0%,100% 0%,calc(100% - 12px) 100%,0% 100%);text-transform:uppercase}.btn-primary:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:var(--amber);transform:translate(-101%);transition:transform .25s cubic-bezier(.4,0,.2,1);z-index:0}.btn-primary:hover:before{transform:translate(0)}.btn-primary:hover{color:var(--bg-deep);box-shadow:var(--glow-amber)}.btn-primary .btn-text,.btn-primary .btn-arrow{position:relative;z-index:1}.btn-primary .btn-arrow{font-size:18px}#screen-intro{background-image:url(/road-bg.jpg);background-size:cover;background-position:center;background-repeat:no-repeat}.intro-bg-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(180deg,#0a0c10d1,#0a0c108c 40%,#0a0c10e6);z-index:0}.intro-content{position:relative;z-index:1;text-align:center;display:flex;flex-direction:column;align-items:center;gap:24px;max-width:700px}.intro-badge{font-family:var(--font-mono);font-size:11px;letter-spacing:6px;color:var(--amber);border:1px solid var(--border);padding:5px 18px;border-radius:2px;background:#f5a62314;animation:pulse-border 2s ease infinite}@keyframes pulse-border{0%,to{border-color:#f5a6232e;box-shadow:none}50%{border-color:#f5a62399;box-shadow:var(--glow-amber)}}.intro-title{display:flex;flex-direction:column;gap:0;font-family:var(--font-display);line-height:.9}.title-line{display:block;background:linear-gradient(135deg,var(--amber-light),var(--amber),var(--amber-dark));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.line-1{font-size:clamp(64px,12vw,120px)}.line-2{font-size:clamp(64px,12vw,120px);margin-left:40px}.intro-desc{font-size:16px;color:var(--text-secondary);line-height:1.6;max-width:520px;font-weight:300}.intro-stats{display:flex;align-items:center;gap:0;border:1px solid var(--border);background:#161d2eb3;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);padding:16px 0;width:100%}.stat-item{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px}.stat-num{font-family:var(--font-display);font-size:42px;color:var(--amber);line-height:1;text-shadow:var(--glow-amber)}.stat-lbl{font-family:var(--font-mono);font-size:9px;color:var(--text-dim);letter-spacing:2px}.stat-divider{width:1px;height:48px;background:var(--border)}#screen-stage{gap:20px;max-width:780px;margin:0 auto;width:100%}.stage-header{text-align:center}.stage-badge{display:inline-block;font-family:var(--font-mono);font-size:10px;letter-spacing:5px;color:var(--blue);border:1px solid var(--border-blue);padding:4px 16px;margin-bottom:12px;background:#00c3ff0f}.stage-title{font-family:var(--font-display);font-size:clamp(32px,6vw,56px);color:var(--text-primary);letter-spacing:2px;line-height:1.05;margin-bottom:10px}.stage-desc{font-size:15px;color:var(--text-secondary);max-width:560px;margin:0 auto;line-height:1.6;font-weight:300}.stage-image-wrap{width:100%;max-width:700px;height:220px;position:relative;overflow:hidden;border:1px solid var(--border)}.stage-image-wrap img{width:100%;height:100%;object-fit:cover;filter:saturate(.8) brightness(.8);transition:transform .6s ease}.stage-image-wrap:hover img{transform:scale(1.03)}.stage-image-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(180deg,transparent 40%,rgba(10,12,16,.85) 100%)}.choices-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;width:100%;max-width:700px}.choice-btn{background:var(--bg-card);border:1px solid var(--border);color:var(--text-primary);font-family:var(--font-body);font-size:15px;font-weight:600;letter-spacing:.5px;padding:20px;cursor:pointer;text-align:left;position:relative;overflow:hidden;transition:all .22s;clip-path:polygon(8px 0%,100% 0%,calc(100% - 8px) 100%,0% 100%);display:flex;flex-direction:column;gap:6px}.choice-btn:before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--amber);transform:scaleY(0);transform-origin:bottom;transition:transform .22s}.choice-btn:hover{border-color:var(--amber);background:#f5a62314;transform:translateY(-2px);box-shadow:0 8px 32px #0006}.choice-btn:hover:before{transform:scaleY(1)}.choice-label{font-family:var(--font-mono);font-size:9px;color:var(--amber);letter-spacing:3px}.choice-text{line-height:1.4}.choice-tag{font-family:var(--font-mono);font-size:9px;color:var(--text-dim)}.choice-btn.risky{border-color:#ff3d5a33}.choice-btn.risky:hover{border-color:var(--red);background:#ff3d5a14}.choice-btn.risky:before{background:var(--red)}.choice-btn.risky .choice-label{color:var(--red)}.choice-btn.safe{border-color:#39ff8a33}.choice-btn.safe:hover{border-color:var(--green);background:#39ff8a0f}.choice-btn.safe:before{background:var(--green)}.choice-btn.safe .choice-label{color:var(--green)}#screen-checkpoint{gap:20px;text-align:center}.checkpoint-ring{position:relative;width:140px;height:140px;display:flex;align-items:center;justify-content:center}.ring{position:absolute;border-radius:50%;border:2px solid var(--amber);animation:ring-pulse 2s ease infinite}.r1{width:100%;height:100%;opacity:.3;animation-delay:0s}.r2{width:75%;height:75%;opacity:.5;animation-delay:.3s}.r3{width:50%;height:50%;opacity:.8;animation-delay:.6s}@keyframes ring-pulse{0%,to{transform:scale(1);opacity:var(--op, .5)}50%{transform:scale(1.08)}}.checkpoint-icon{font-size:36px;color:var(--amber);text-shadow:var(--glow-amber);animation:spin-slow 6s linear infinite;z-index:1}@keyframes spin-slow{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.checkpoint-title{font-family:var(--font-display);font-size:48px;color:var(--amber);letter-spacing:6px;text-shadow:var(--glow-amber)}.checkpoint-msg{font-size:16px;color:var(--text-secondary);max-width:460px;line-height:1.6}.checkpoint-score-gained{font-family:var(--font-display);font-size:36px;color:var(--green);text-shadow:0 0 20px rgba(57,255,138,.5)}.checkpoint-badges{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}.cp-badge{font-family:var(--font-mono);font-size:10px;letter-spacing:2px;padding:5px 14px;border:1px solid;border-radius:2px}.cp-badge.good{color:var(--green);border-color:#39ff8a4d;background:#39ff8a12}.cp-badge.warn{color:var(--amber);border-color:#f5a6234d;background:#f5a62312}.cp-badge.bad{color:var(--red);border-color:#ff3d5a4d;background:#ff3d5a12}#screen-reaction{gap:24px;text-align:center}.reaction-badge{display:inline-block;font-family:var(--font-mono);font-size:11px;letter-spacing:4px;color:var(--blue);border:1px solid var(--border-blue);padding:5px 16px;margin-bottom:12px;background:#00c3ff0f;animation:pulse-blue 1.5s ease infinite}@keyframes pulse-blue{0%,to{box-shadow:none}50%{box-shadow:var(--glow-blue)}}.reaction-title{font-family:var(--font-display);font-size:clamp(28px,5vw,46px);color:var(--text-primary);margin-bottom:8px}.reaction-desc{font-size:14px;color:var(--text-secondary);max-width:440px;margin:0 auto;line-height:1.6}.reaction-arena{display:flex;flex-direction:column;align-items:center;gap:20px;width:100%}.reaction-timer-ring{width:140px;height:140px;position:relative;display:flex;align-items:center;justify-content:center}.reaction-timer-ring svg{position:absolute;top:0;right:0;bottom:0;left:0;transform:rotate(-90deg)}.timer-track{fill:none;stroke:#ffffff12;stroke-width:6}.timer-progress{fill:none;stroke:var(--amber);stroke-width:6;stroke-linecap:round;stroke-dasharray:327;stroke-dashoffset:0;transition:stroke .3s}.reaction-countdown{font-family:var(--font-display);font-size:56px;color:var(--amber);text-shadow:var(--glow-amber);z-index:1;transition:color .3s}.countdown-urgent{color:var(--red)!important;text-shadow:var(--glow-red)!important}.timer-progress.urgent{stroke:var(--red)!important}.reaction-buttons{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;max-width:560px}.reaction-btn{padding:18px 32px;font-family:var(--font-display);font-size:20px;letter-spacing:2px;border:2px solid;cursor:pointer;transition:all .15s;clip-path:polygon(8px 0%,100% 0%,calc(100% - 8px) 100%,0% 100%);position:relative;overflow:hidden;background:var(--bg-card)}.reaction-btn:active{transform:scale(.96)}.reaction-btn.correct-ans{color:var(--green);border-color:#39ff8a80}.reaction-btn.correct-ans:hover{background:#39ff8a1a;box-shadow:0 0 20px #39ff8a4d}.reaction-btn.wrong-ans{color:var(--red);border-color:#ff3d5a80}.reaction-btn.wrong-ans:hover{background:#ff3d5a1a;box-shadow:var(--glow-red)}.reaction-btn.neutral-ans{color:var(--blue);border-color:#00c3ff66}.reaction-btn.neutral-ans:hover{background:#00c3ff14;box-shadow:var(--glow-blue)}#reaction-target-zone{width:300px;height:60px;position:relative;border:1px solid var(--border);background:#161d2eb3;overflow:hidden;border-radius:2px}.target-bar-bg{position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(90deg,#ff3d5a4d,#ff3d5a4d 10%,#f5a62340 10%,#f5a62340 30%,#39ff8a4d 30%,#39ff8a4d 70%,#f5a62340 70%,#f5a62340 90%,#ff3d5a4d 90%,#ff3d5a4d)}.target-cursor{position:absolute;top:0;bottom:0;width:4px;background:var(--text-primary);box-shadow:0 0 10px #fff9;border-radius:2px;left:0%}.target-zone-label{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:10px;color:#ffffff4d;letter-spacing:3px;pointer-events:none}.reaction-feedback{font-family:var(--font-display);font-size:32px;letter-spacing:3px;padding:16px 40px;border:2px solid;background:var(--bg-card)}.reaction-feedback.success{color:var(--green);border-color:var(--green);box-shadow:0 0 30px #39ff8a4d}.reaction-feedback.fail{color:var(--red);border-color:var(--red);box-shadow:var(--glow-red)}.hidden{display:none!important}#screen-obstacle{gap:16px}.obstacle-warning{display:flex;align-items:center;gap:16px;font-family:var(--font-mono);font-size:11px;letter-spacing:4px;color:var(--red);animation:blink-warn 1s step-end infinite}@keyframes blink-warn{0%,to{opacity:1}50%{opacity:.4}}.warning-icon{font-size:18px}.obstacle-title{font-family:var(--font-display);font-size:clamp(28px,5vw,46px);text-align:center}.obstacle-desc{font-size:14px;color:var(--text-secondary);text-align:center;max-width:440px;line-height:1.6}.obstacle-track{width:100%;max-width:640px;height:180px;border:1px solid var(--border);background:var(--bg-surface);position:relative;overflow:hidden}.obstacle-road{position:absolute;top:0;right:0;bottom:0;left:0;background:repeating-linear-gradient(90deg,rgba(255,255,255,.03) 0px,rgba(255,255,255,.03) 1px,transparent 1px,transparent 60px)}#obstacle-player{position:absolute;left:40px;font-size:22px;color:var(--amber);text-shadow:var(--glow-amber);transition:top .12s ease;z-index:10;filter:drop-shadow(0 0 8px var(--amber))}#obstacle-items{position:absolute;top:0;right:0;bottom:0;left:0}.obs-item{position:absolute;font-size:20px;transition:left .05s linear}.obs-item.hazard{color:var(--red);filter:drop-shadow(0 0 6px var(--red))}.obs-item.bonus{color:var(--green);filter:drop-shadow(0 0 6px var(--green))}.obstacle-controls{display:flex;gap:14px}.obs-btn{padding:12px 28px;font-family:var(--font-display);font-size:18px;letter-spacing:2px;cursor:pointer;background:var(--bg-card);color:var(--amber);border:1px solid var(--border);transition:all .15s;clip-path:polygon(8px 0%,100% 0%,calc(100% - 8px) 100%,0% 100%)}.obs-btn:hover{background:#f5a6231a;border-color:var(--amber)}.obs-btn:active{transform:scale(.95)}.obstacle-lives{display:flex;gap:8px;font-size:20px}.life-icon{transition:all .3s}.life-icon.lost{opacity:.2;filter:grayscale(1)}.obstacle-result{font-family:var(--font-display);font-size:28px;letter-spacing:3px;text-align:center;padding:16px 40px;border:2px solid;background:var(--bg-card)}.obstacle-result.success{color:var(--green);border-color:var(--green)}.obstacle-result.fail{color:var(--red);border-color:var(--red)}#screen-results{padding:40px 24px}.results-bg{position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(ellipse at 50% 30%,rgba(245,166,35,.12) 0%,transparent 65%);pointer-events:none}.results-content{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;gap:20px;text-align:center;max-width:640px;margin:0 auto;width:100%}.trophy-wrap{position:relative;width:100px;height:100px;display:flex;align-items:center;justify-content:center}.trophy-glow{position:absolute;top:-20px;right:-20px;bottom:-20px;left:-20px;border-radius:50%;background:radial-gradient(circle,rgba(245,166,35,.3) 0%,transparent 70%);animation:trophy-pulse 2s ease infinite}@keyframes trophy-pulse{0%,to{transform:scale(1);opacity:.8}50%{transform:scale(1.2);opacity:1}}.trophy-icon{font-size:64px;z-index:1}.results-title{font-family:var(--font-display);font-size:clamp(36px,7vw,68px);color:var(--amber);letter-spacing:4px;text-shadow:var(--glow-amber)}.results-subtitle{font-size:16px;color:var(--text-secondary);line-height:1.6;max-width:460px}.results-score-box{display:flex;align-items:baseline;gap:6px;background:var(--bg-card);border:1px solid var(--border);padding:20px 40px}.results-score-label{font-family:var(--font-mono);font-size:10px;letter-spacing:3px;color:var(--text-dim);margin-right:8px}.results-score{font-family:var(--font-display);font-size:60px;color:var(--amber);text-shadow:var(--glow-amber);line-height:1}.results-score-max{font-family:var(--font-mono);font-size:14px;color:var(--text-dim)}.results-breakdown{width:100%;display:flex;flex-direction:column;gap:8px}.breakdown-row{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;border:1px solid var(--border);background:#161d2e80;font-size:13px}.breakdown-label{color:var(--text-secondary)}.breakdown-val{font-family:var(--font-mono);color:var(--amber)}.results-rank{font-family:var(--font-display);font-size:22px;letter-spacing:4px;padding:10px 32px;border:1px solid var(--border-blue);color:var(--blue);background:#00c3ff0f}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);z-index:9999;font-family:var(--font-mono);font-size:12px;letter-spacing:2px;padding:10px 28px;border:1px solid var(--amber);background:#0a0c10f2;color:var(--amber);white-space:nowrap;animation:toast-in .3s ease forwards}@keyframes toast-in{0%{opacity:0;transform:translate(-50%) translateY(12px)}to{opacity:1;transform:translate(-50%) translateY(0)}}.separator{width:100%;max-width:400px;height:1px;background:linear-gradient(90deg,transparent,var(--border),transparent)}