:root{
  --bg:#0b0f1a;
  --bg2:#070a12;
  --neon1:#00eaff;
  --neon2:#ff00e6;
  --neon3:#7dff00;
  --text:#e6f7ff;
  --muted:#7aa3b2;
  --glow:0 0 10px rgba(0,234,255,.6),0 0 20px rgba(0,234,255,.4),0 0 40px rgba(255,0,230,.2);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{
  margin:0;
  font-family:"Share Tech Mono",ui-monospace,monospace;
  color:var(--text);
  background:
    radial-gradient(1200px 70% at 50% -20%,rgba(255,0,230,.15),transparent 60%),
    radial-gradient(1000px 80% at 120% 20%,rgba(0,234,255,.15),transparent 60%),
    linear-gradient(180deg,var(--bg),var(--bg2));
  overflow:hidden;
}
#app{
  max-width:480px;
  margin:0 auto;
  padding:12px 12px calc(env(safe-area-inset-bottom,0) + 12px);
  display:flex;
  flex-direction:column;
  gap:10px;
  height:100%;
}
.hud{
  display:flex;
  justify-content:space-between;
  gap:8px;
}
.hud-block{
  flex:1;
  padding:8px 10px;
  border:1px solid rgba(0,234,255,.25);
  border-radius:10px;
  background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.02));
  box-shadow:var(--glow);
  text-align:center;
}
.label{font-size:12px;letter-spacing:2px;color:var(--muted)}
.value{font-size:22px;letter-spacing:1px;margin-top:2px}
.hud-next #nextCanvas,#nextCanvas{width:128px;height:72px;display:block;margin:4px auto 0;image-rendering:pixelated;}
.stage-wrap{
  position:relative;
  flex:1;
  min-height:320px;
  border:1px solid rgba(0,234,255,.25);
  border-radius:14px;
  overflow:hidden;
  box-shadow:var(--glow);
  background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(255,255,255,.01));
}
#stage{
  width:100%;
  height:100%;
  display:block;
  image-rendering:pixelated;
}
.scanlines{
  position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(transparent 0 2px,rgba(0,0,0,.12) 2px 4px);
  mix-blend-mode:overlay;
}
.overlay{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(180deg,rgba(7,10,18,.65),rgba(7,10,18,.75));
  backdrop-filter:blur(6px);
}
.overlay.hidden{display:none}
.overlay-inner{display:flex;flex-direction:column;gap:10px;align-items:center}
.state-text{font-size:18px;color:var(--muted)}
.controls{
  display:flex;gap:10px;align-items:center;justify-content:space-between;
}
.dpad{display:flex;gap:10px;align-items:center}
.dpad-middle{display:flex;flex-direction:column}
.pad-btn{
  width:64px;height:64px;border-radius:12px;border:1px solid rgba(0,234,255,.35);
  background:linear-gradient(180deg,rgba(0,234,255,.06),rgba(255,255,255,.02));
  color:var(--text);font-size:22px;
  box-shadow:var(--glow);
}
.actions{display:flex;gap:10px}
.btn,.btn-action{
  padding:10px 14px;border-radius:12px;border:1px solid rgba(255,0,230,.35);
  background:linear-gradient(180deg,rgba(255,0,230,.08),rgba(255,255,255,.02));
  color:var(--text);box-shadow:0 0 12px rgba(255,0,230,.25);
}
.btn.small{padding:6px 10px;font-size:12px}
.btn-primary{border-color:rgba(0,234,255,.6);box-shadow:0 0 14px rgba(0,234,255,.4)}
.panel{
  border:1px solid rgba(0,234,255,.25);
  border-radius:12px;box-shadow:var(--glow);
  padding:10px;max-height:38vh;overflow:auto;background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(255,255,255,.01));
}
.panel-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}
.panel-title{letter-spacing:2px;color:var(--muted);font-size:12px}
.leaderboard{margin:0;padding-left:18px;display:grid;gap:6px}
.leaderboard li{padding:6px;border:1px dashed rgba(0,234,255,.25);border-radius:8px}
.modal{
  position:fixed;inset:0;display:flex;align-items:center;justify-content:center;
  background:rgba(7,10,18,.6);backdrop-filter:blur(6px);z-index:20;
}
.modal.hidden{display:none}
.modal-inner{
  width:min(90vw,420px);border:1px solid rgba(255,0,230,.35);border-radius:12px;
  padding:16px;background:linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,.015));box-shadow:var(--glow);
}
.modal-title{font-size:18px;margin-bottom:8px}
.modal-score{font-size:28px;color:var(--neon1);margin-bottom:8px}
.modal-label{display:flex;flex-direction:column;gap:6px;margin-bottom:12px;color:var(--muted)}
.modal input{
  padding:10px;border-radius:10px;border:1px solid rgba(0,234,255,.35);
  outline:none;background:rgba(0,0,0,.25);color:var(--text);
}
.modal-actions{display:flex;gap:10px;justify-content:flex-end}
.toast{
  position:fixed;left:50%;bottom:calc(env(safe-area-inset-bottom,0) + 24px);transform:translateX(-50%);
  padding:10px 14px;border-radius:10px;border:1px solid rgba(0,234,255,.35);
  background:rgba(7,10,18,.8);box-shadow:var(--glow);z-index:30;
}
.toast.hidden{display:none}
.kbd-hints{display:none;text-align:center;color:var(--muted);font-size:12px;letter-spacing:1px}
@media (pointer:fine){
  #app{max-width:960px}
  .controls{display:none}
  .panel{max-height:48vh}
  .kbd-hints{display:block}
  #nextCanvas{width:180px;height:88px}
}
@media (orientation:landscape) and (pointer:coarse){
  body::before{
    content:"请竖屏体验";position:fixed;inset:0;display:flex;align-items:center;justify-content:center;
    background:rgba(7,10,18,.9);z-index:50;
    color:var(--text);font-size:18px;letter-spacing:2px
  }
}