:root{
  --asphalt:#C9CCD2;
  --surface:#FFFFFF;
  --surface-2:#F1F3F7;
  --ink:#171A20;
  --muted:#5D6675;
  --rule:#C6CBD4;
  --stripe:#9AA2B0;
  --hot:#D62C0C;
  --ok:#0E9E6E;
  --p1:#FFCC33;
  --p2:#B8BEC8;
  --p3:#E4572E;
  --p4:#9C8BE0;
  color-scheme: light;
}

*{box-sizing:border-box}
html{height:100%; scroll-padding-top: env(safe-area-inset-top, 0px)}
body{
  margin:0; min-height:100%;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
  background:var(--asphalt); color:var(--ink);
  font-family:Inter,system-ui,"Noto Sans SC","PingFang SC",sans-serif;
  font-size:15px; line-height:1.6; -webkit-text-size-adjust:100%;
}
button{font:inherit; color:inherit; cursor:pointer}
:focus-visible{outline:2px solid var(--p1); outline-offset:2px}
.num{font-family:Oswald,"Arial Narrow",sans-serif; font-variant-numeric:tabular-nums; letter-spacing:.5px}

.wrap{max-width:1020px; margin:0 auto; padding:18px 14px 60px}

/* ---- scoreboard ---- */
.board{
  background:var(--surface); border:1px solid var(--rule); border-radius:4px;
  display:flex; align-items:stretch; flex-wrap:wrap; overflow:hidden;
}
.mark{
  padding:12px 16px; display:flex; align-items:center;
  border-right:1px solid var(--rule); background:var(--surface-2);
}
.mark b{font-family:Oswald,sans-serif; font-size:22px; font-weight:600; letter-spacing:2px; line-height:1}
.boardtools{display:flex; align-items:center; padding:9px 12px; margin-left:auto}
.btn{background:transparent; border:1px solid var(--rule); border-radius:3px; padding:6px 13px; font-size:13px}
.btn:hover{border-color:var(--muted)}
.btn.go{background:var(--hot); border-color:var(--hot); color:#fff; font-weight:600}
.btn.go:hover{filter:brightness(1.1)}
.btn:disabled{opacity:.4; cursor:not-allowed}

/* ---- track ---- */
.track{
  position:relative; margin-top:14px; background:var(--surface); border:1px solid var(--rule);
  border-radius:4px; padding:10px 10px 10px 0; overflow:hidden;
}
.lane{display:grid; grid-template-columns:104px minmax(0,1fr) 62px; align-items:center}
.lane + .lane{border-top:1px dashed var(--rule)}
.who{padding:0 10px; display:flex; align-items:center; gap:7px; min-width:0}
.who i{width:9px; height:9px; border-radius:50%; flex:none; background:var(--c)}
.who span{font-size:12.5px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; color:var(--muted)}
.lane.you .who span{color:var(--ink); font-weight:600}
.strip{position:relative; height:54px; overflow:hidden; background:
  linear-gradient(90deg, var(--stripe) 0 36px, transparent 36px 60px) var(--scroll, 0px) 50% / 60px 2px repeat-x,
  linear-gradient(90deg, var(--rule) 0 10px, transparent 10px 80px) calc(var(--scroll, 0px) * 2) 3px / 80px 2px repeat-x,
  linear-gradient(90deg, var(--rule) 0 10px, transparent 10px 80px) calc(var(--scroll, 0px) * 2) calc(100% - 3px) / 80px 2px repeat-x,
  linear-gradient(90deg, transparent 0 150px, var(--stripe) 150px 240px) calc(var(--scroll, 0px) * 3) 14px / 240px 1px repeat-x,
  linear-gradient(90deg, transparent 0 40px, var(--stripe) 40px 110px, transparent 110px 240px) calc(var(--scroll, 0px) * 3) calc(100% - 14px) / 240px 1px repeat-x;
}
.track.rolling .strip::after{opacity:0}
.strip::after{
  content:""; position:absolute; right:0; top:4px; bottom:4px; width:10px;
  background-image:
    linear-gradient(45deg,var(--ink) 25%,transparent 25%,transparent 75%,var(--ink) 75%),
    linear-gradient(45deg,var(--ink) 25%,transparent 25%,transparent 75%,var(--ink) 75%);
  background-size:10px 10px; background-position:0 0,5px 5px; opacity:.55; transition:opacity .3s;
}
.car{position:absolute; top:50%; left:0; width:76px; margin-top:-20px; will-change:transform}
.car img{display:block; width:76px; height:40px; object-fit:cover}
.car img[data-color="--p4"]{filter:hue-rotate(260deg) saturate(.8)}
.dust{position:absolute; right:92%; top:50%; height:3px; width:70px; margin-top:-1.5px;
  background:linear-gradient(90deg,transparent,var(--c)); opacity:0; transition:opacity .2s;
  box-shadow:0 -9px 0 -1px color-mix(in srgb, var(--c) 35%, transparent), 0 9px 0 -1px color-mix(in srgb, var(--c) 35%, transparent)}
.car.moving .dust{opacity:.75; animation:flicker .12s steps(2) infinite}
.car.moving img{animation:rumble .09s linear infinite}
@keyframes rumble{0%,100%{transform:translateY(0)} 50%{transform:translateY(-.8px)}}
@keyframes flicker{50%{opacity:.45; width:58px}}
@media (prefers-reduced-motion: reduce){
  .car.moving .dust{opacity:0; animation:none}
  .car.moving img{animation:none}
}
.pace{padding:0 6px; font-family:Oswald,sans-serif; font-size:15px; color:var(--muted); text-align:right}
.lane.you .pace{color:var(--p1)}
.pace small{display:block; font-family:Inter,sans-serif; font-size:9.5px; letter-spacing:.5px; color:var(--muted)}
.place{color:var(--ok)}

.lights{
  position:absolute; inset:0; display:none; place-items:center; z-index:5;
  background:var(--surface); background:color-mix(in srgb, var(--surface) 86%, transparent); backdrop-filter:blur(1px);
}
.lights.on{display:grid}
.lights .cd{font-size:clamp(54px,14vw,92px); font-weight:600; line-height:1}
.lights .sub{text-align:center; color:var(--muted); font-size:13px}

/* ---- typing ---- */
.typebox{position:relative; margin-top:14px; background:var(--surface); border:1px solid var(--rule); border-radius:4px; padding:20px 18px}
.typebox.err{border-color:var(--hot)}
#text{font-family:"IBM Plex Mono",ui-monospace,monospace; font-size:clamp(16px,2.2vw,21px); line-height:1.95; word-break:break-word; user-select:none}
#text .c{color:var(--muted); opacity:.6}
#text .c.ok{color:var(--ink); opacity:1}
#text .c.bad{color:#fff; background:var(--hot); opacity:1; border-radius:2px}
#text .c.at{box-shadow:inset 0 -3px 0 var(--p1); opacity:1; color:var(--ink)}
#text .c.sp{white-space:pre}
#feed{position:absolute; inset:0; width:100%; height:100%; opacity:0; border:0; padding:0; margin:0; font-size:16px}
.veil{
  position:absolute; inset:0; display:grid; place-items:center; border-radius:4px;
  background:var(--surface); background:color-mix(in srgb, var(--surface) 80%, transparent); font-size:14px; color:var(--muted);
}
.veil[hidden]{display:none}

.hud{margin-top:10px}
.hudnote{font-size:12.5px; color:var(--muted)}
kbd{font-family:"IBM Plex Mono",monospace; font-size:12px; border:1px solid var(--rule); border-bottom-width:2px; border-radius:3px; padding:1px 6px; background:var(--surface-2)}

/* ---- results ---- */
.result{margin-top:14px; background:var(--surface); border:1px solid var(--rule); border-radius:4px}
.rtop{display:flex; align-items:center; gap:18px; flex-wrap:wrap; padding:16px 18px}
.rplace{font-size:44px; font-weight:600; line-height:1; color:var(--p1)}
.rplace small{display:block; font-family:Inter,sans-serif; font-size:11px; font-weight:400; color:var(--muted); letter-spacing:1px}
.rstat b{display:block; font-size:24px; font-weight:500; line-height:1.1}
.rstat span{font-size:11px; color:var(--muted)}

@media (max-width:620px){
  .lane{grid-template-columns:76px minmax(0,1fr) 54px}
  .car{width:58px; margin-top:-15px}
  .car img{width:58px; height:30px}
}