:root{
  --bg:#050816;
  --ink:#eaf7ff;
  --muted:#7f9bb3;
  --cyan:#58f5ff;
  --pink:#ff4fd8;
  --gold:#ffd166;
  --lime:#9dff6a;
  --danger:#ff5a6e;
  --panel:rgba(10,20,38,.82);
  --line:rgba(120,220,255,.16);
}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  overflow:hidden;
  -webkit-tap-highlight-color:transparent;
  user-select:none;
  -webkit-user-select:none;
  touch-action:none;
}
button{font-family:inherit;border:0;background:none;color:inherit;cursor:pointer}
.hidden{display:none!important}
#app{position:fixed;inset:0;overflow:hidden}
#gameCanvas{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none}

/* ---------- shared overlay ---------- */
.overlay{
  position:absolute;inset:0;z-index:20;
  display:flex;align-items:center;justify-content:center;
  padding:calc(22px + env(safe-area-inset-top)) 18px calc(22px + env(safe-area-inset-bottom));
  background:radial-gradient(90% 70% at 50% 20%,rgba(24,55,88,.28),rgba(3,7,18,.9));
  backdrop-filter:blur(3px);
}
.level-eyebrow,.eyebrow{
  font-size:10px;letter-spacing:4px;font-weight:800;color:var(--cyan);
  text-shadow:0 0 14px rgba(88,245,255,.5);
}
.title{
  margin:6px 0 0;font-size:clamp(54px,15vw,96px);line-height:.95;
  letter-spacing:6px;font-weight:900;
  text-shadow:0 0 28px rgba(88,245,255,.28),0 0 64px rgba(255,79,216,.14);
}
.title span{color:var(--gold);text-shadow:0 0 24px rgba(255,209,102,.35)}
.cta{
  display:flex;align-items:center;justify-content:center;gap:10px;
  width:100%;max-width:360px;height:58px;border-radius:16px;
  background:linear-gradient(90deg,#58f5ff,#7aa7ff);
  color:#04111c;font-size:17px;font-weight:900;letter-spacing:2px;
  box-shadow:0 0 26px rgba(88,245,255,.25),0 10px 26px rgba(0,0,0,.35);
  transition:transform .12s ease,filter .12s ease;
}
.cta:hover{filter:brightness(1.08)}
.cta:active{transform:translateY(2px) scale(.99)}
.cta.small{max-width:240px;height:48px;font-size:14px;margin:14px auto 0}
.text-btn{
  margin-top:14px;font-size:12px;color:var(--muted);
  border-bottom:1px solid rgba(127,155,179,.35);padding-bottom:3px;
}

/* ---------- start ---------- */
.start-overlay{background:radial-gradient(80% 70% at 50% 36%,rgba(10,24,45,.55),rgba(2,5,14,.94))}
.start-inner{
  width:100%;max-width:660px;text-align:center;
  display:flex;flex-direction:column;align-items:center;
  max-height:100%;overflow-y:auto;padding:8px 0 16px;
}
.pitch{
  margin:20px 0 0;color:#a9c2d5;font-size:14px;line-height:1.8;letter-spacing:.5px;
}
.features{
  display:flex;justify-content:center;gap:10px;margin:26px 0 28px;width:100%;
}
.feature{
  flex:1;max-width:150px;padding:12px 8px;border-radius:12px;
  border:1px solid var(--line);background:rgba(14,28,48,.55);
  display:flex;flex-direction:column;align-items:center;gap:6px;
}
.feature b{font-size:10px;color:var(--gold);letter-spacing:2px;font-weight:800}
.feature span{font-size:11px;line-height:1.5;color:#9db7ca}
.controls{margin-top:18px;font-size:10px;line-height:1.7;color:#627c92;letter-spacing:.5px}
.best{margin-top:10px;font-size:11px;color:#8ea9bb;letter-spacing:1px}
.best b{color:var(--gold)}

/* ---------- hud ---------- */
#hud{position:absolute;inset:0;z-index:10;pointer-events:none}
#hud button{pointer-events:auto}
.hud-top{
  display:flex;align-items:flex-start;justify-content:space-between;
  padding:calc(12px + env(safe-area-inset-top)) 14px 0;gap:10px;
}
.left-hud{width:38%;max-width:170px}
.hp-row{display:flex;align-items:baseline;justify-content:space-between;font-size:10px;color:#9db7ca;margin-bottom:5px}
.hp-row b{color:var(--cyan);font-size:9px;letter-spacing:1px}
.hp-row i{font-style:normal;color:var(--ink);font-size:12px}
.hp-bar{height:8px;border-radius:5px;background:rgba(255,255,255,.12);overflow:hidden}
.hp-bar i{display:block;height:100%;width:100%;border-radius:5px;background:linear-gradient(90deg,#ff5a6e,#ff9a6c);box-shadow:0 0 10px rgba(255,90,110,.5);transition:width .12s}
.xp-bar{height:4px;margin-top:5px;border-radius:3px;background:rgba(255,255,255,.09);overflow:hidden}
.xp-bar i{display:block;height:100%;width:0;border-radius:3px;background:var(--cyan);box-shadow:0 0 8px rgba(88,245,255,.6);transition:width .12s}
.timer{
  position:absolute;left:50%;top:calc(13px + env(safe-area-inset-top));transform:translateX(-50%);
  font-size:20px;font-weight:900;letter-spacing:2px;color:#eaf7ff;
  text-shadow:0 0 16px rgba(88,245,255,.35);font-variant-numeric:tabular-nums;
}
.right-hud{display:flex;align-items:center;gap:9px}
.kills{display:flex;flex-direction:column;align-items:flex-end;line-height:1}
.kills span{font-size:17px;font-weight:900;color:var(--gold)}
.kills small{font-size:8px;color:#728da3;letter-spacing:1px;margin-top:3px}
.mini-btn{
  width:34px;height:34px;border-radius:9px;border:1px solid var(--line);
  background:rgba(12,24,42,.7);color:#b9d3e4;font-size:12px;font-weight:800;
}
.mini-btn:active{transform:scale(.94)}
.boss-wrap{
  position:absolute;left:50%;top:calc(52px + env(safe-area-inset-top));transform:translateX(-50%);
  width:min(74%,420px);text-align:center;
}
.boss-name{font-size:9px;letter-spacing:3px;color:var(--pink);font-weight:800;text-shadow:0 0 12px rgba(255,79,216,.5)}
.boss-bar{height:7px;margin-top:5px;border-radius:4px;background:rgba(255,255,255,.1);overflow:hidden;border:1px solid rgba(255,79,216,.25)}
.boss-bar i{display:block;height:100%;width:100%;background:linear-gradient(90deg,#ff4fd8,#ff8a5c);box-shadow:0 0 12px rgba(255,79,216,.5);transition:width .12s}
.hint{
  position:absolute;left:50%;bottom:calc(22px + env(safe-area-inset-bottom));transform:translateX(-50%);
  font-size:10px;color:#8fa9bb;letter-spacing:1px;white-space:nowrap;
  padding:7px 12px;border-radius:12px;background:rgba(8,18,32,.55);border:1px solid rgba(120,220,255,.1);
  transition:opacity .3s;
}
.toast{
  position:absolute;left:50%;top:34%;transform:translate(-50%,-50%);
  padding:10px 20px;border-radius:14px;
  background:rgba(8,18,32,.85);border:1px solid rgba(255,209,102,.35);
  color:var(--gold);font-size:13px;font-weight:800;letter-spacing:2px;
  box-shadow:0 0 24px rgba(255,209,102,.15);
  animation:toastIn .25s ease;
}
@keyframes toastIn{from{opacity:0;transform:translate(-50%,-44%)}to{opacity:1;transform:translate(-50%,-50%)}}

/* ---------- overdrive ---------- */
.overdrive{
  position:absolute;right:calc(18px + env(safe-area-inset-right));bottom:calc(20px + env(safe-area-inset-bottom));
  width:78px;height:78px;border-radius:50%;pointer-events:auto;
  background:conic-gradient(from -90deg,var(--gold) 0 var(--p,0%),rgba(255,255,255,.13) var(--p,0%) 100%);
  padding:4px;box-shadow:0 0 0 1px rgba(255,209,102,.15),0 10px 26px rgba(0,0,0,.35);
  transition:transform .12s,filter .12s;z-index:12;
}
.overdrive::before{
  content:"";position:absolute;inset:7px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%,rgba(30,58,84,.95),rgba(6,14,26,.98));
  border:1px solid rgba(255,255,255,.1);
}
.od-inner{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:2px}
.od-label{font-size:15px;font-weight:900;letter-spacing:1px;color:#eaf7ff}
.od-key{font-size:7px;letter-spacing:1px;color:#6f8ca1}
.overdrive.ready{
  animation:odPulse 1.4s ease-in-out infinite;
  filter:drop-shadow(0 0 14px rgba(255,209,102,.55));
}
.overdrive.active{filter:drop-shadow(0 0 20px rgba(255,79,216,.65));transform:scale(1.04)}
.overdrive:active{transform:scale(.95)}
@keyframes odPulse{0%,100%{filter:drop-shadow(0 0 8px rgba(255,209,102,.35))}50%{filter:drop-shadow(0 0 20px rgba(255,209,102,.7))}}

/* ---------- level up ---------- */
.level-overlay{background:rgba(3,7,18,.78);backdrop-filter:blur(7px)}
.level-panel{width:100%;max-width:860px;text-align:center}
.level-panel h2,.pause-panel h2,.end-panel h2{
  margin:8px 0 0;font-size:clamp(24px,5vw,34px);font-weight:900;letter-spacing:2px;
}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}
.card{
  position:relative;padding:18px 14px 14px;border-radius:14px;text-align:left;
  background:linear-gradient(160deg,rgba(16,32,54,.96),rgba(8,16,30,.98));
  border:1px solid rgba(120,220,255,.2);
  box-shadow:0 14px 36px rgba(0,0,0,.4),inset 0 1px 0 rgba(255,255,255,.06);
  cursor:pointer;transition:transform .12s,border-color .12s,box-shadow .12s;
  overflow:hidden;
}
.card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--card-color,var(--cyan));
  box-shadow:0 0 16px var(--card-color,var(--cyan));
}
.card:hover{transform:translateY(-4px);border-color:rgba(120,220,255,.5);box-shadow:0 18px 38px rgba(0,0,0,.5),0 0 22px rgba(88,245,255,.12)}
.card:active{transform:translateY(-1px) scale(.99)}
.card-icon{
  display:flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:9px;
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);
  color:var(--card-color,var(--cyan));font-size:18px;font-weight:900;
  text-shadow:0 0 14px var(--card-color,var(--cyan));
}
.card-name{margin-top:14px;font-size:16px;font-weight:900;color:#eaf7ff;letter-spacing:.5px}
.card-desc{margin-top:5px;font-size:11px;line-height:1.5;color:#90abc0;min-height:32px}
.card-meta{margin-top:12px;display:flex;justify-content:space-between;align-items:center;font-size:9px;color:#5f7b90}
.card-meta b{color:var(--card-color,var(--cyan));letter-spacing:1px}
.card-pips{display:flex;gap:3px}
.card-pips i{width:10px;height:3px;border-radius:2px;background:rgba(255,255,255,.15)}
.card-pips i.on{background:var(--card-color,var(--cyan));box-shadow:0 0 6px var(--card-color,var(--cyan))}

/* ---------- pause / end ---------- */
.pause-panel,.end-panel{
  width:100%;max-width:420px;text-align:center;padding:28px 24px;
  border-radius:18px;background:var(--panel);border:1px solid var(--line);
  box-shadow:0 22px 60px rgba(0,0,0,.5);
}
.pause-panel p,.end-panel p{margin:10px 0 0;font-size:12px;color:var(--muted);line-height:1.7}
.end-stats{display:flex;justify-content:center;gap:0;margin:24px 0 22px}
.end-stats div{flex:1;display:flex;flex-direction:column;align-items:center;border-right:1px solid rgba(120,220,255,.12)}
.end-stats div:last-child{border-right:0}
.end-stats b{font-size:26px;font-weight:900;color:var(--gold);font-variant-numeric:tabular-nums}
.end-stats span{margin-top:4px;font-size:9px;color:#6f8ca1;letter-spacing:1px}
#endTitle{color:var(--cyan);text-shadow:0 0 22px rgba(88,245,255,.25)}
#endTitle.fail{color:var(--danger);text-shadow:0 0 22px rgba(255,90,110,.25)}

/* ---------- mobile ---------- */
@media (max-width:700px){
  .features{gap:6px;margin:20px 0 22px}
  .feature{padding:9px 4px}
  .feature span{font-size:10px}
  .controls{max-width:330px}
  .cards{grid-template-columns:1fr;gap:9px;margin-top:16px;max-height:58vh;overflow:auto;padding:2px}
  .card{padding:12px 14px;display:grid;grid-template-columns:38px 1fr;grid-template-rows:auto auto;column-gap:12px;align-items:center}
  .card::before{width:3px}
  .card-icon{grid-row:1/3;width:36px;height:36px}
  .card-name{margin:0;font-size:15px}
  .card-desc{margin:2px 0 0;min-height:0;font-size:11px}
  .card-meta{grid-column:2;margin-top:4px}
  .level-panel h2{font-size:22px}
  .overdrive{width:70px;height:70px;right:14px;bottom:calc(16px + env(safe-area-inset-bottom))}
  .hint{bottom:calc(16px + env(safe-area-inset-bottom));font-size:9px}
  .hud-top{padding-left:12px;padding-right:12px}
  .left-hud{width:42%}
  .timer{font-size:18px}
}
@media (max-width:380px){
  .title{letter-spacing:3px}
  .feature span{font-size:9px}
  .overdrive{width:64px;height:64px}
  .od-label{font-size:13px}
}

/* =========================================================
   PIXEL OVERRIDES — 低分辨率画布 + 像素 UI
   ========================================================= */
:root{
  --panel:#0a1322;
  --line:#2a4a6a;
  --cyan:#58f5ff;
  --gold:#ffd166;
  --pink:#ff4fd8;
}
html,body{background:#04060f}
body{
  font-family:"Courier New",ui-monospace,"SFMono-Regular",Menlo,monospace;
  letter-spacing:.3px;
}
#gameCanvas{
  image-rendering:pixelated;
  image-rendering:crisp-edges;
}
#app::after{
  content:"";
  position:fixed;inset:0;z-index:80;pointer-events:none;
  background:repeating-linear-gradient(0deg,rgba(0,0,0,.20) 0 1px,rgba(0,0,0,0) 1px 3px);
  mix-blend-mode:multiply;
}

/* start */
.start-overlay{
  background:linear-gradient(180deg,rgba(4,8,20,.76),rgba(2,4,12,.92));
  backdrop-filter:none;
}
.eyebrow,.level-eyebrow{
  font-family:"Courier New",monospace;font-size:10px;letter-spacing:3px;
  color:var(--gold);text-shadow:2px 2px 0 #000;
}
.title{
  font-family:"Courier New",monospace;
  font-size:clamp(48px,13vw,82px);letter-spacing:2px;
  color:#eaf7ff;
  text-shadow:4px 4px 0 #000,8px 8px 0 rgba(0,0,0,.5);
}
.title span{color:var(--gold);text-shadow:4px 4px 0 #000,8px 8px 0 rgba(0,0,0,.5)}
.subtitle{font-size:11px;letter-spacing:6px;color:#6f8ca1;margin-top:8px}
.pitch{color:#9db7ca;font-size:12px;line-height:1.9}
.features{gap:6px;margin:22px 0 24px}
.feature{
  border:2px solid var(--line);background:#08111f;border-radius:0;
  box-shadow:3px 3px 0 #000;padding:10px 6px;
}
.feature b{color:var(--gold);font-size:9px}
.feature span{color:#8fa9bb;font-size:10px}
.cta{
  border-radius:0;border:2px solid #000;background:var(--gold);color:#1b1204;
  box-shadow:4px 4px 0 #000;font-family:"Courier New",monospace;font-size:16px;
  letter-spacing:1px;height:56px;max-width:360px;
}
.cta:hover{background:#ffe08a;filter:none}
.cta:active{transform:translate(3px,3px);box-shadow:1px 1px 0 #000}
.cta.small{background:var(--cyan)}
.controls,.best{color:#6f8ca1;font-size:10px}
.best b{color:var(--gold)}

/* hud */
.hud-top{padding-top:calc(10px + env(safe-area-inset-top));padding-left:10px;padding-right:10px}
.hp-row{font-size:9px;color:#9db7ca}
.hp-row b{color:var(--cyan);font-size:9px}
.hp-row i{color:#fff;font-size:11px}
.hp-bar{
  height:10px;border:2px solid #000;background:#101a2c;border-radius:0;
  box-shadow:2px 2px 0 #000;padding:1px;
}
.hp-bar i{
  height:100%;border-radius:0;
  background:repeating-linear-gradient(90deg,#ff5a6e 0 5px,#d63f55 5px 6px);
  box-shadow:none;
}
.xp-bar{
  height:6px;border:2px solid #000;background:#101a2c;border-radius:0;
  box-shadow:2px 2px 0 #000;padding:1px;margin-top:4px;
}
.xp-bar i{
  height:100%;border-radius:0;
  background:repeating-linear-gradient(90deg,#58f5ff 0 4px,#2aa9b8 4px 5px);
  box-shadow:none;
}
.timer{
  font-family:"Courier New",monospace;font-size:18px;color:#fff;
  text-shadow:2px 2px 0 #000;letter-spacing:0;
}
.kills span{color:var(--gold);font-size:16px;text-shadow:2px 2px 0 #000}
.kills small{color:#728da3;font-size:8px}
.mini-btn{
  border-radius:0;border:2px solid #000;background:#0d1728;color:#b9d3e4;
  box-shadow:2px 2px 0 #000;font-family:"Courier New",monospace;
}
.boss-name{color:var(--pink);text-shadow:2px 2px 0 #000;font-size:9px}
.boss-bar{height:8px;border:2px solid #000;background:#101a2c;border-radius:0;box-shadow:2px 2px 0 #000;padding:1px}
.boss-bar i{height:100%;border-radius:0;background:repeating-linear-gradient(90deg,#ff4fd8 0 5px,#b82b9b 5px 6px);box-shadow:none}
.hint{
  border-radius:0;border:2px solid #000;background:#08111f;color:#8fa9bb;
  box-shadow:2px 2px 0 #000;font-size:9px;
}
.toast{
  border-radius:0;border:2px solid var(--gold);background:#08111f;color:var(--gold);
  box-shadow:4px 4px 0 #000;font-size:12px;letter-spacing:1px;
}

/* overdrive */
.overdrive{
  width:82px;height:82px;border-radius:0;padding:0;
  background:#08111f;border:2px solid var(--line);
  box-shadow:4px 4px 0 #000;
}
.overdrive::before{content:none;display:none}
.od-inner{height:100%;padding-bottom:14px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px}
.od-label{font-family:"Courier New",monospace;font-size:14px;font-weight:900;color:#eaf7ff;letter-spacing:0}
.od-key{font-size:7px;color:#6f8ca1;letter-spacing:0}
.od-meter{
  position:absolute;left:6px;right:6px;bottom:6px;height:8px;z-index:3;
  border:2px solid #000;background:#101a2c;
}
.od-meter i{
  display:block;height:100%;width:var(--p,0%);
  background:linear-gradient(90deg,#ffd166,#ff8a5c);
}
.overdrive.ready{border-color:var(--gold);animation:odPulse 1.2s steps(2,end) infinite}
.overdrive.active{border-color:var(--pink);filter:none;transform:scale(1)}
.overdrive.ready{filter:none}
.overdrive:active{transform:translate(2px,2px);box-shadow:2px 2px 0 #000}

/* overlays / cards */
.level-overlay{background:rgba(2,5,13,.86);backdrop-filter:none}
.level-panel h2,.pause-panel h2,.end-panel h2{
  font-family:"Courier New",monospace;color:#eaf7ff;text-shadow:3px 3px 0 #000;
}
.cards{gap:8px}
.card{
  border-radius:0;border:2px solid var(--line);background:#08111f;
  box-shadow:4px 4px 0 #000;padding:14px 12px;
}
.card::before{width:4px;box-shadow:none}
.card:hover{transform:translate(-1px,-1px);border-color:var(--cyan);box-shadow:5px 5px 0 #000;filter:none}
.card:active{transform:translate(3px,3px);box-shadow:1px 1px 0 #000}
.card-icon{
  border-radius:0;border:2px solid #000;background:#0d1728;
  box-shadow:2px 2px 0 #000;font-family:"Courier New",monospace;
  text-shadow:none;width:34px;height:34px;
}
.card-name{font-family:"Courier New",monospace;font-size:15px;color:#fff;text-shadow:1px 1px 0 #000;margin-top:10px}
.card-desc{color:#90abc0;font-size:10px;line-height:1.6}
.card-meta{color:#5f7b90;font-size:8px}
.card-meta b{color:var(--card-color,var(--cyan));text-shadow:none}
.card-pips i{border-radius:0;height:4px}
.pause-panel,.end-panel{
  border-radius:0;border:2px solid var(--line);background:#08111f;
  box-shadow:6px 6px 0 #000;
}
.pause-panel p,.end-panel p{color:#7f9bb3;font-size:11px}
.end-stats b{font-family:"Courier New",monospace;color:var(--gold);text-shadow:2px 2px 0 #000}
.end-stats span{color:#6f8ca1;font-size:8px}
#endTitle{color:var(--cyan);text-shadow:3px 3px 0 #000}
#endTitle.fail{color:#ff5a6e;text-shadow:3px 3px 0 #000}
.text-btn{color:#7f9bb3;border-bottom:1px dashed #3e5b73;border-radius:0}

@media (max-width:700px){
  .card{border-radius:0;padding:11px 12px}
  .overdrive{width:76px;height:76px;right:12px;bottom:calc(14px + env(safe-area-inset-bottom))}
  .od-label{font-size:13px}
  .hud-top{padding-left:10px;padding-right:10px}
  .title{letter-spacing:1px}
}