/* 急速狂飙 · 外观
   手机优先。HUD 与弹窗都要 finger-friendly，且绝不挡住玩家车辆。 */
:root{
  --bg:#070a0e;
  --fg:#eef3f8;
  --dim:#93a2b3;
  --accent:#4ee39a;
  --warn:#ffd24a;
  --danger:#ff3b30;
  --glass:rgba(12,17,24,.72);
  --line:rgba(255,255,255,.10);
  --safe-t:env(safe-area-inset-top,0px);
  --safe-b:env(safe-area-inset-bottom,0px);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
html,body{margin:0;padding:0;height:100%;overflow:hidden;background:var(--bg);color:var(--fg);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",
    "Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;}
body{position:fixed;inset:0;touch-action:none;user-select:none;-webkit-user-select:none;}

#stage{position:absolute;inset:0;overflow:hidden;}
#gl{position:absolute;inset:0;width:100%;height:100%;display:block;}

/* ══════════════ HUD ══════════════ */
#hud{position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .28s ease;}
#hud.show{opacity:1;}

/* 速度表：右上 */
.speed{position:absolute;right:max(16px,calc(var(--safe-t) * 0 ));top:calc(14px + var(--safe-t));
  right:16px;text-align:right;}
.speed .big{font-size:clamp(38px,11vw,60px);font-weight:900;line-height:.94;letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;color:#fff;
  text-shadow:0 3px 22px rgba(0,0,0,.72),0 0 42px rgba(0,0,0,.5);transition:color .18s linear;}
.speed .big .unit{font-size:.29em;font-weight:800;color:var(--dim);margin-left:6px;letter-spacing:.02em;}
.speed .bar{margin-top:9px;height:5px;width:clamp(110px,32vw,180px);margin-left:auto;
  background:rgba(255,255,255,.14);border-radius:3px;overflow:hidden;}
.speed .bar i{display:block;height:100%;width:0;background:var(--danger);border-radius:3px;
  transition:width .1s linear,background .2s linear;}

/* 障碍距离：右侧中部 */
.distWrap{position:absolute;right:16px;top:38%;text-align:right;opacity:0;transition:opacity .22s ease;}
.distWrap .dlab{font-size:11px;font-weight:700;letter-spacing:.16em;color:var(--dim);}
.distWrap .dval{font-size:clamp(26px,7.5vw,38px);font-weight:900;line-height:1;
  font-variant-numeric:tabular-nums;color:var(--warn);text-shadow:0 2px 16px rgba(0,0,0,.7);}
.distWrap .dval span{font-size:.36em;margin-left:3px;color:var(--dim);}

/* 躲避计数：左下 */
.dodge{position:absolute;left:16px;bottom:calc(150px + var(--safe-b));
  font-size:14px;font-weight:800;color:var(--dim);letter-spacing:.02em;
  text-shadow:0 2px 12px rgba(0,0,0,.7);}
.dodge b{color:var(--accent);font-size:17px;}

/* 提示条：底部中央，压在车下方 */
.tip{position:absolute;left:50%;bottom:calc(122px + var(--safe-b));transform:translateX(-50%);
  max-width:min(84vw,420px);width:max-content;padding:9px 17px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(9px);
  -webkit-backdrop-filter:blur(9px);
  font-size:clamp(13px,3.5vw,15.5px);font-weight:800;line-height:1.34;text-align:center;
  color:#fff;opacity:0;transition:opacity .2s ease;box-shadow:0 6px 26px rgba(0,0,0,.44);}

/* 刹车踏板：右下角大热区 */
#brake{position:absolute;right:max(14px,2.4vw);bottom:calc(20px + var(--safe-b));
  width:clamp(104px,28vw,148px);height:clamp(104px,28vw,148px);border-radius:50%;
  pointer-events:auto;cursor:pointer;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  font-size:clamp(17px,4.6vw,22px);font-weight:900;letter-spacing:.06em;color:#fff;
  background:radial-gradient(circle at 34% 28%,rgba(255,90,72,.42),rgba(150,20,14,.34) 62%,rgba(70,8,5,.30));
  border:2px solid rgba(255,110,90,.60);
  box-shadow:0 12px 34px rgba(0,0,0,.5),inset 0 2px 22px rgba(255,120,100,.24);
  backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px);
  transition:transform .07s ease,box-shadow .12s ease,background .12s ease;}
#brake small{font-size:.52em;font-weight:800;letter-spacing:.20em;color:rgba(255,255,255,.66);}
#brake.down{transform:scale(.93);
  background:radial-gradient(circle at 34% 28%,rgba(255,140,120,.72),rgba(200,34,22,.62) 62%,rgba(90,10,6,.55));
  box-shadow:0 4px 16px rgba(0,0,0,.5),0 0 34px rgba(255,70,50,.6),inset 0 2px 30px rgba(255,150,120,.4);}

/* ══════════════ 弹窗 ══════════════ */
#home,#result,#fatal{position:absolute;inset:0;display:none;align-items:center;justify-content:center;
  padding:18px;overflow-y:auto;overscroll-behavior:contain;
  background:radial-gradient(ellipse at 50% 0%,rgba(20,32,48,.72),rgba(4,7,11,.90) 62%,rgba(2,4,7,.96));
  backdrop-filter:blur(13px);-webkit-backdrop-filter:blur(13px);z-index:20;}
#home.show,#result.show{display:flex;}
#fatal{display:none;z-index:60;}

.card{width:100%;max-width:430px;border-radius:22px;padding:24px 20px 20px;
  background:linear-gradient(168deg,rgba(24,32,44,.94),rgba(11,16,24,.96));
  border:1px solid var(--line);
  box-shadow:0 22px 68px rgba(0,0,0,.62),inset 0 1px 0 rgba(255,255,255,.055);
  margin:auto;}

.logo{font-size:clamp(34px,10.2vw,46px);font-weight:900;letter-spacing:-.015em;line-height:1.06;
  background:linear-gradient(96deg,#fff 6%,#7fe7bb 52%,#39a8f5 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;}
.logo small{display:block;font-size:.26em;letter-spacing:.30em;font-weight:800;
  color:var(--dim);-webkit-text-fill-color:var(--dim);margin-top:7px;}

.sub{font-size:14px;line-height:1.72;color:var(--dim);}
.sub b{color:#e8f1fa;font-weight:800;}

.keys{margin:18px 0 4px;display:flex;flex-direction:column;gap:9px;}
.key{display:flex;gap:11px;align-items:flex-start;font-size:13px;line-height:1.56;color:#c3d0dd;
  padding:9px 12px;border-radius:11px;background:rgba(255,255,255,.035);border:1px solid rgba(255,255,255,.05);}
.key i{font-style:normal;font-size:15px;line-height:1.3;flex:0 0 auto;}
.key b{color:#fff;font-weight:800;}

.diffs{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin:17px 0 4px;}
.stat{padding:11px 8px;border-radius:12px;text-align:center;cursor:pointer;
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.075);
  transition:transform .12s ease,border-color .16s ease,background .16s ease;}
.stat .k{font-size:12px;font-weight:800;letter-spacing:.05em;color:var(--dim);}
.stat .v{font-size:22px;font-weight:900;margin-top:4px;font-variant-numeric:tabular-nums;}
.stat .v span{font-size:.44em;font-weight:800;color:var(--dim);margin-left:2px;}
.stat.on{border-color:rgba(90,230,180,.55);background:rgba(90,230,180,.11);
  box-shadow:0 0 0 1px rgba(90,230,180,.18),0 6px 20px rgba(40,190,140,.16);}
.stat:active{transform:scale(.97);}

.paint{margin-top:16px;}
.paint .lab{font-size:11px;font-weight:900;letter-spacing:.28em;color:var(--dim);margin-bottom:9px;}
.swrow{display:flex;flex-wrap:wrap;gap:8px;}
.sw{width:34px;height:34px;border-radius:50%;border:2px solid rgba(255,255,255,.18);cursor:pointer;
  padding:0;box-shadow:inset 0 -5px 12px rgba(0,0,0,.36),inset 0 4px 10px rgba(255,255,255,.28);
  transition:transform .12s ease,border-color .16s ease;}
.sw.on{border-color:#fff;transform:scale(1.13);box-shadow:0 0 0 3px rgba(120,220,255,.30),
  inset 0 -5px 12px rgba(0,0,0,.36),inset 0 4px 10px rgba(255,255,255,.28);}
.sw:active{transform:scale(.94);}

.btn{display:block;width:100%;margin-top:16px;padding:15px 18px;border-radius:14px;
  font-size:17px;font-weight:900;letter-spacing:.04em;color:#04211a;cursor:pointer;
  background:linear-gradient(96deg,#6cf0b4,#3ad0a0 58%,#2fb8d8);
  border:0;box-shadow:0 9px 26px rgba(48,200,150,.30);
  transition:transform .1s ease,box-shadow .16s ease,filter .16s ease;}
.btn:active{transform:translateY(1px) scale(.99);box-shadow:0 4px 14px rgba(48,200,150,.24);}
.btn.ghost{background:transparent;color:#b9c7d6;border:1px solid rgba(255,255,255,.15);
  box-shadow:none;font-weight:800;font-size:15px;padding:12px 18px;}
.btn.ghost:active{background:rgba(255,255,255,.06);}

/* ── 结算页 ── */
.title{font-size:clamp(23px,6.6vw,31px);font-weight:900;line-height:1.24;letter-spacing:-.01em;
  margin-bottom:4px;text-align:center;color:#fff;word-break:break-word;}
.sub2{font-size:14px;line-height:1.72;color:var(--dim);}

/* 嘲讽文案：红色大字，失败页的视觉焦点 */
.mock{margin:15px 0 8px;padding:13px 15px;border-radius:13px;text-align:center;
  font-size:clamp(17px,4.9vw,19px);font-weight:900;line-height:1.62;color:#ff3b30;
  background:rgba(255,59,48,.085);border:1px solid rgba(255,59,48,.24);
  text-shadow:0 2px 18px rgba(255,59,48,.32);letter-spacing:.005em;}

/* 具体故障与死因：一行小字，放在嘲讽之后 —— 先骂人，再说清车是怎么坏的 */
.cause{margin:0 0 4px;padding:11px 14px;border-radius:11px;
  font-size:clamp(12.5px,3.4vw,13.5px);font-weight:600;line-height:1.72;color:#c9b28a;
  background:rgba(255,170,60,.07);border:1px solid rgba(255,170,60,.20);text-align:left;}
.cause::before{content:'故障与死因';display:block;font-size:10.5px;font-weight:900;
  letter-spacing:.22em;color:#8d7a55;margin-bottom:6px;}

/* 动力声浪选择 */
.seg{display:grid;grid-template-columns:1fr 1fr;gap:8px;}
.sg{padding:10px 8px;border-radius:11px;cursor:pointer;font-size:13.5px;font-weight:800;
  color:var(--dim);background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.075);transition:all .16s ease;}
.sg.on{color:#fff;border-color:rgba(90,230,180,.55);background:rgba(90,230,180,.11);
  box-shadow:0 0 0 1px rgba(90,230,180,.18);}
.sg:active{transform:scale(.98);}

.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin:15px 0 3px;}
.stats .stat{cursor:default;}
.stats .stat:active{transform:none;}

.fine{font-size:11.5px;line-height:1.62;color:#7a8896;text-align:center;margin-top:11px;}

#fatal{color:#ff8a80;font-size:15px;font-weight:800;text-align:center;line-height:1.7;}

@media (max-height:640px){
  .logo{font-size:30px;} .keys{display:none;}
  .card{padding:18px 16px 15px;}
  .btn{padding:13px 16px;margin-top:13px;}
}
@media (min-width:720px){
  .card{max-width:470px;}
}