:root {
  --bg: #0b1118;
  --panel: #17202ad9;
  --panel-solid: #17202a;
  --line: #dce4df44;
  --accent: #ff845c;
  --mint: #a6f2ce;
  --red: #ff5d58;
  --text: #edf0ee;
  --dim: #c3cbc9;
  font-size: 16px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }
html, body { height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
}
button { font: inherit; color: inherit; border: 0; cursor: pointer; background: none; touch-action: manipulation; }
button:focus-visible { outline: 3px solid var(--mint); outline-offset: 4px; }

.stage-wrap { position: fixed; inset: 0; overflow: hidden; }
#stage {
  position: absolute; left: 50%; top: 50%;
  width: 1920px; height: 1088px;
  transform-origin: center center;
  transform: translate(-50%, -50%) scale(1);
}
#scene { position: absolute; inset: 0; width: 1920px; height: 1088px; display: block; }

/* ---------- 顶部 ---------- */
.hud-top {
  position: absolute; top: 42px; left: 64px; right: 64px;
  display: flex; justify-content: space-between; align-items: flex-start;
  pointer-events: none;
}
.hud-top button { pointer-events: auto; }
.brand-mark { display: flex; align-items: center; font-weight: 900; font-style: italic; font-size: 40px; letter-spacing: 4px; }
.brand-mark i { display: inline-block; width: 10px; height: 32px; margin-right: 8px; background: var(--accent); transform: skew(-17deg); }
.brand-sub { font-size: 20px; letter-spacing: 6px; color: var(--dim); margin-top: 8px; }
.hud-top-right { display: flex; align-items: center; }
.track-label { text-align: right; margin-right: 26px; line-height: 1.7; }
.track-label b { display: block; font-size: 21px; font-weight: 600; letter-spacing: 2px; color: #fff; }
.track-label span { font-size: 19px; letter-spacing: 2px; color: var(--dim); }
.icon-round {
  width: 62px; height: 62px; border: 1px solid #8a969b55; border-radius: 50%;
  background: var(--panel); font-size: 24px; margin-left: 12px; color: var(--text);
}
.lb-open {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  width: 104px; height: 104px; margin-left: 14px; border-radius: 18px;
  background: linear-gradient(160deg, #ff9a6b, #ff5d3a);
  box-shadow: 0 10px 26px #ff5d3a55;
}
.lb-open-label { font-size: 26px; font-weight: 900; letter-spacing: 1px; color: #fff; }
.lb-open-sub { font-size: 15px; color: #ffe4d8; margin-top: 3px; letter-spacing: 2px; }

/* ---------- 开场 ---------- */
.intro {
  position: absolute; top: 168px; left: 460px; right: 460px;
  text-align: center; pointer-events: none;
}
.intro > * { pointer-events: auto; }
.intro-kicker {
  display: inline-block; padding: 12px 26px; border: 1px solid var(--line);
  border-radius: 40px; background: var(--panel); font-size: 23px; letter-spacing: 3px; color: var(--dim);
}
.intro-title { font-size: 56px; letter-spacing: 3px; margin-top: 26px; text-shadow: 0 4px 30px #000a; }
.intro-desc { font-size: 23px; color: var(--dim); margin-top: 18px; }
.intro-steps {
  list-style: none; display: flex; justify-content: center; gap: 18px; margin-top: 26px;
}
.intro-steps li {
  padding: 13px 26px; background: var(--panel); border: 1px solid var(--line);
  border-radius: 12px; font-size: 22px; letter-spacing: 1px;
}
.intro-steps b { color: var(--accent); margin-right: 10px; font-weight: 700; }
.intro-rules { margin-top: 22px; font-size: 20px; color: var(--dim); letter-spacing: 1px; }
.intro-stats { margin-top: 26px; font-size: 19px; color: #9fb0ab; }
.intro-stats b { color: var(--mint); font-weight: 600; }
.cta {
  margin-top: 26px; padding: 20px 52px; border-radius: 14px;
  background: linear-gradient(160deg, #ff9a6b, #ff5d3a);
  font-size: 27px; font-weight: 700; letter-spacing: 2px; color: #fff;
  box-shadow: 0 12px 32px #ff5d3a66;
  transition: transform .12s ease, box-shadow .12s ease;
}
.cta:hover { transform: translateY(-2px); box-shadow: 0 16px 40px #ff5d3a88; }
.cta:active { transform: translateY(1px) scale(.98); }

/* ---------- 遥测 ---------- */
.telemetry {
  position: absolute; left: 64px; bottom: 200px; width: 330px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 16px;
  padding: 22px 26px; backdrop-filter: blur(6px);
}
.telemetry-title { font-size: 18px; letter-spacing: 2px; color: var(--accent); margin-bottom: 16px; }
.tel-row { display: flex; justify-content: space-between; align-items: baseline; padding: 9px 0; }
.tel-row span { font-size: 17px; color: var(--dim); }
.tel-row b { font-size: 27px; font-weight: 700; }
.tel-row b small { font-size: 15px; color: var(--dim); margin-left: 3px; }
.tel-best b { font-size: 20px; color: var(--mint); }

/* ---------- 速度表 ---------- */
.speedo { position: absolute; left: 50%; bottom: 96px; transform: translateX(-50%); width: 620px; text-align: center; }
.speed-read { margin-top: -232px; }
.speed-read b { display: block; font-size: 108px; font-weight: 900; letter-spacing: 6px; font-variant-numeric: tabular-nums; text-shadow: 0 4px 24px #000c; }
.speed-read span { font-size: 20px; letter-spacing: 6px; color: var(--dim); }
.speed-state { margin-top: 12px; font-size: 24px; letter-spacing: 3px; color: var(--mint); }
.speed-goal { margin-top: 10px; font-size: 19px; color: var(--dim); letter-spacing: 1px; }
.speed-goal b { color: var(--accent); }

/* ---------- 刹车面板 ---------- */
.brake-panel { position: absolute; right: 64px; bottom: 130px; width: 430px; }
.brake-title { font-size: 18px; letter-spacing: 2px; color: var(--accent); margin-bottom: 10px; }
.brake-head { display: flex; flex-direction: column; gap: 4px; }
.brake-num b { font-size: 46px; font-weight: 900; }
.brake-num span { font-size: 18px; color: var(--dim); margin-left: 4px; }
.brake-hint { font-size: 15px; color: var(--dim); line-height: 1.4; }
.brake-mid { display: flex; align-items: flex-end; gap: 18px; margin-top: 14px; }
.pedal { position: relative; width: 96px; height: 168px; flex: none; }
.pedal-arm {
  position: absolute; left: 50%; bottom: 8px; width: 74px; height: 140px;
  margin-left: -37px; border-radius: 14px;
  background: linear-gradient(160deg, #6b4f3a, #3d2c1e);
  border: 2px solid #8a6a4a66;
  transform-origin: 50% 100%;
}
.pedal-pad {
  position: absolute; left: 50%; bottom: 0; width: 92px; height: 22px; margin-left: -46px;
  border-radius: 9px; background: #1c2630; border: 1px solid var(--line);
}
.force-bar { flex: 1; min-width: 0; }
.force-break-label { text-align: right; font-size: 14px; color: var(--red); margin-bottom: 5px; }
.force-bar-body { position: relative; height: 200px; }
.force-scale { position: absolute; left: 0; top: 0; bottom: 0; width: 44px; }
.force-scale i { position: absolute; font-style: normal; font-size: 15px; color: #8a9994; transform: translateY(50%); }
.force-track {
  position: absolute; right: 0; top: 0; bottom: 0; width: 62px;
  background: #10182088; border: 1px solid var(--line); border-radius: 10px; overflow: hidden;
}
#force-fill {
  position: absolute; left: 0; right: 0; bottom: 0; height: 0%;
  background: linear-gradient(180deg, #ff845c, #ff5d58);
  transition: height .05s linear;
}
.force-break-line { position: absolute; left: -4px; right: -4px; top: 0; height: 2px; background: var(--red); }
.brake-btn {
  flex: none; width: 128px; height: 200px; border-radius: 22px;
  background: linear-gradient(160deg, #ff9a6b, #ff5d3a);
  box-shadow: 0 12px 30px #ff5d3a55;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px;
  user-select: none; -webkit-user-select: none; touch-action: none;
  transition: transform .08s ease, filter .08s ease;
}
.brake-btn span { font-size: 22px; font-weight: 800; color: #fff; writing-mode: vertical-rl; letter-spacing: 4px; }
.brake-btn small { font-size: 13px; color: #ffe4d8; }
.brake-btn.pressed { transform: scale(.94); filter: brightness(1.15); }
.brake-tips { display: flex; justify-content: space-between; margin-top: 10px; font-size: 14px; color: #8a9994; }

/* ---------- 结算 ---------- */
.result {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  background: #050a0fb8; backdrop-filter: blur(3px);
}
.result-card {
  width: 620px; padding: 46px 52px; border-radius: 22px;
  background: var(--panel-solid); border: 1px solid var(--line); text-align: center;
  box-shadow: 0 30px 80px #000a;
}
.result-kicker { font-size: 18px; letter-spacing: 4px; color: var(--accent); }
.result-title { font-size: 84px; font-weight: 900; margin: 14px 0 6px; color: var(--mint); }
.result-grid { display: flex; justify-content: center; gap: 44px; margin: 20px 0 8px; }
.result-grid span { display: block; font-size: 16px; color: var(--dim); margin-bottom: 6px; }
.result-grid b { font-size: 30px; }
.result-grade { font-size: 20px; color: var(--dim); margin: 14px 0 26px; }
.result-actions { display: flex; justify-content: center; gap: 18px; }
.result-actions .cta { margin-top: 0; }
.ghost-btn {
  padding: 18px 36px; border-radius: 14px; border: 1px solid var(--line);
  font-size: 22px; color: var(--dim); background: #ffffff08;
}
.ghost-btn:hover { color: var(--text); border-color: #ffffff55; }

/* ---------- 失败提示 ---------- */
.fail-toast {
  position: absolute; top: 400px; left: 50%; transform: translateX(-50%);
  padding: 22px 44px; border-radius: 16px; background: #2a1214ee; border: 1px solid #ff5d5866;
  font-size: 26px; color: var(--red); letter-spacing: 2px;
}

/* ---------- 排行榜 ---------- */
.lb-backdrop { position: absolute; inset: 0; background: #050a0f99; }
.lb-panel {
  position: absolute; top: 0; right: 0; bottom: 0; width: 480px;
  background: #10161dee; border-left: 1px solid var(--line);
  display: flex; flex-direction: column; padding: 40px 34px;
  transform: translateX(100%); transition: transform .25s ease;
}
.lb-panel.is-open { transform: translateX(0); }
.lb-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 22px; }
.lb-kicker { font-size: 17px; letter-spacing: 3px; color: var(--accent); }
.lb-header h1 { font-size: 34px; margin-top: 6px; }
.lb-columns { display: flex; padding: 0 14px 10px; font-size: 15px; color: #8a9994; }
.lb-columns span:nth-child(1) { width: 70px; }
.lb-columns span:nth-child(2) { flex: 1; }
.lb-list { list-style: none; flex: 1; overflow-y: auto; }
.lb-row { display: flex; align-items: center; padding: 11px 14px; border-radius: 10px; font-size: 19px; }
.lb-row:nth-child(odd) { background: #ffffff06; }
.lb-row.is-current { background: #ff845c2e; border: 1px solid #ff845c66; }
.lb-rank { width: 70px; color: var(--dim); font-variant-numeric: tabular-nums; }
.lb-driver { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lb-score { color: var(--mint); font-variant-numeric: tabular-nums; }
.lb-score small { color: var(--dim); margin-left: 2px; font-size: 14px; }
.lb-state { padding: 26px 14px; color: var(--dim); font-size: 18px; }
.lb-state.is-error { color: var(--red); }
.lb-submit { display: flex; gap: 12px; padding-top: 18px; border-top: 1px solid var(--line); }
.lb-submit input {
  flex: 1; padding: 15px 18px; border-radius: 12px; border: 1px solid var(--line);
  background: #ffffff0a; color: var(--text); font-size: 19px; outline: none;
}
.lb-submit input:focus { border-color: var(--accent); }
.lb-submit .cta { margin-top: 0; padding: 14px 30px; font-size: 20px; }

.toast {
  position: absolute; top: 130px; left: 50%; transform: translateX(-50%);
  padding: 16px 34px; border-radius: 40px; background: var(--panel); border: 1px solid var(--line);
  font-size: 21px; letter-spacing: 1px;
}
.portrait-tip { display: none; }
@media (orientation: portrait) {
  .portrait-tip {
    display: block; position: absolute; top: 24px; left: 50%; transform: translateX(-50%);
    padding: 10px 26px; border-radius: 30px; background: var(--panel); border: 1px solid var(--line);
    font-size: 22px; color: var(--dim); letter-spacing: 2px; z-index: 10;
  }
}