.arena { width: 100%; max-width: 1500px; margin-inline: auto; padding: var(--space-3); display: grid; gap: var(--space-3); }
.arena-controls { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: var(--space-3); align-items: end; }
.arena-buttons { display: flex; gap: 0.4rem; flex-wrap: wrap; }

.racers { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: var(--space-3); }
.racer { border: 1px solid var(--line); background: var(--surface); display: grid; gap: 0.4rem; padding: 0.55rem; border-top: 3px solid var(--rc, var(--accent)); position: relative; }
.racer.won { box-shadow: 0 0 22px color-mix(in srgb, var(--rc) 55%, transparent); border-color: var(--rc); }
.racer h3 { margin: 0; font-size: 0.9rem; color: var(--rc, var(--accent)); display: flex; justify-content: space-between; gap: 0.5rem; }
.racer h3 .rank { color: var(--warn); }
.racer .params { min-height: 4.6em; }
.params { font-size: 0.68rem; color: var(--ink-soft); margin: 0; }
.racer .stage-sm { position: relative; width: 100%; aspect-ratio: 1; background: #030503; border: 1px solid var(--line); }
.racer .stage-sm canvas { width: 100%; height: 100%; display: block; }
.racer .stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.3rem; font-size: 0.72rem; }
.racer .stats span { display: block; color: var(--ink-soft); font-size: 0.6rem; letter-spacing: 0.08em; text-transform: uppercase; }
.racer .stats b { color: var(--rc, var(--accent)); font-variant-numeric: tabular-nums; }
.racer .meter { height: 6px; background: #0b140b; border: 1px solid var(--line); }
.racer .meter i { display: block; height: 100%; width: 0; background: var(--rc, var(--accent)); transition: width 0.2s; }
.racer .status { font-size: 0.7rem; color: var(--ink-soft); min-height: 1.1em; }
.racer.finished .status { color: var(--rc); font-weight: 700; }

.arena-lower { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: var(--space-3); }
@media (max-width: 900px) { .arena-lower { grid-template-columns: minmax(0, 1fr); } }
.chart-box.tall { height: 220px; }
.board { width: 100%; border-collapse: collapse; font-size: 0.8rem; }
.board th { text-align: left; font-size: 0.64rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-soft); border-bottom: 1px solid var(--line); padding: 0.25rem 0.3rem; }
.board td { padding: 0.35rem 0.3rem; border-bottom: 1px dashed #14250f; }
.board .num { text-align: right; font-variant-numeric: tabular-nums; }
.board .dot { display: inline-block; width: 0.6rem; height: 0.6rem; margin-right: 0.4rem; vertical-align: middle; }
.board tr.lead td { color: var(--warn); }