:root{--black:#0b0d10;--white:#fff;--ink:#111318;--muted:#666c76;--line:#d9dde3;--soft:#f3f5f7;--yellow:#ffd21f;--red:#ff3b30;--green:#16a36a;--blue:#2367ff;--panel:#15181e}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,input{font:inherit}button,a{touch-action:manipulation}.shell{width:min(1440px,calc(100% - 44px));margin:0 auto}.topbar{height:72px;border-bottom:1px solid #e6e8ec;display:flex;align-items:center;padding:0 max(22px,calc((100% - 1440px)/2));gap:28px;position:sticky;top:0;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);z-index:30}.brand{display:flex;align-items:center;gap:10px;color:#0b0d10;text-decoration:none;font-weight:900;letter-spacing:.08em;font-size:14px}.brand-icon{width:18px;height:18px;border:5px solid 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.hazard-layer{position:absolute;inset:0;z-index:2;pointer-events:none;overflow:hidden}
.hazard-sprite{position:absolute;left:50%;top:50%;max-width:none;opacity:0;will-change:transform,opacity;filter:drop-shadow(0 10px 24px rgba(0,0,0,.28));user-select:none;-webkit-user-drag:none}
.hazard-sprite.active{opacity:1}
#spriteWetPed{filter:drop-shadow(0 10px 22px rgba(0,0,0,.34))}
#spriteIceBox{filter:drop-shadow(0 12px 16px rgba(0,0,0,.42))}
.drive-stage.collision .hazard-sprite{filter:drop-shadow(0 14px 26px rgba(255,48,48,.24)) drop-shadow(0 10px 26px rgba(0,0,0,.36))}
.collision-bump{animation:hazardBump .22s ease-out 1}
@keyframes hazardBump{0%{transform:translate(-50%,-50%) scale(var(--sx,1),var(--sy,1))}45%{transform:translate(-50%,-49.2%) scale(calc(var(--sx,1)*1.04),calc(var(--sy,1)*1.04))}100%{transform:translate(-50%,-50%) scale(var(--sx,1),var(--sy,1))}}
@media(max-width:760px){
  .hazard-sprite{max-width:none}
}

/* v10 video driving layer */
.scene-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 30%;opacity:0;z-index:1;pointer-events:none;user-select:none;background:#0b0d10;transition:opacity .12s linear}
.scene-video.active{opacity:1}
.drive-stage.braking .scene-video.active{filter:saturate(.94) contrast(1.02)}
.drive-stage.collision .scene-video.active{filter:saturate(.75) contrast(1.08)}
@media(max-width:760px){.scene-video{object-position:center 34%}}

.hazard-shadow{position:absolute;left:50%;top:50%;width:0;height:0;border-radius:50%;background:radial-gradient(ellipse at center, rgba(0,0,0,.48) 0%, rgba(0,0,0,.28) 46%, rgba(0,0,0,0) 75%);opacity:0;transform:translate(-50%,-50%);will-change:transform,width,height,opacity}
.hazard-shadow.active{opacity:1}
#spriteIceBox{transform-origin:center bottom}