:root{
  --sky1:#bfe9ff; --sky2:#7fc8f8; --water:#2f9bd6; --water2:#1c6fae; --sand:#f3e2b3;
  --accent:#ff8c42; --accent2:#ffd166; --leaf:#1c7fb8;
  --good:#ffcf3f; --bad:#ff6b6b; --text:#103a55;
  --panel:rgba(255,255,255,.94);
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent;}
html,body{height:100%;overflow:hidden;}
body{
  font-family:"PingFang SC","Microsoft YaHei","Comic Sans MS",system-ui,sans-serif;
  color:var(--text);
  background:linear-gradient(180deg,var(--sky1),var(--sky2) 22%,var(--water) 22%,var(--water2));
  user-select:none;
}
#app{position:relative;width:100vw;height:100vh;overflow:hidden;}
#game{position:absolute;inset:0;width:100%;height:100%;display:block;cursor:none;}
.hidden{display:none !important;}

/* ---------- HUD ---------- */
#hud{
  position:absolute;top:0;left:0;right:0;z-index:5;
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 18px;gap:10px;
  background:linear-gradient(180deg,rgba(255,255,255,.55),rgba(255,255,255,0));
  pointer-events:none;
}
#hud .icon-btn{pointer-events:auto;}
.hud-left,.hud-right{display:flex;align-items:center;gap:14px;}
.hud-stat{font-size:16px;font-weight:700;color:var(--text);}
.hud-stat b{color:var(--accent);font-size:20px;}
.hearts{display:flex;gap:4px;font-size:24px;filter:drop-shadow(0 2px 3px rgba(0,0,0,.25));}
.hud-center{text-align:center;background:rgba(255,255,255,.72);border-radius:16px;padding:4px 16px;box-shadow:0 4px 12px rgba(0,0,0,.12);}
.target-label{font-size:13px;opacity:.85;font-weight:700;}
.target-char{
  font-size:44px;font-weight:800;line-height:1.05;color:var(--accent);
  text-shadow:0 2px 0 rgba(0,0,0,.1);
}
.target-pinyin{font-size:15px;color:var(--leaf);font-weight:700;letter-spacing:1px;}
.icon-btn{
  background:rgba(255,255,255,.7);border:2px solid rgba(0,0,0,.06);color:var(--text);font-size:20px;
  width:42px;height:42px;border-radius:50%;cursor:pointer;transition:.15s;
}
.icon-btn:hover{background:#fff;transform:scale(1.08);}

/* ---------- Overlays ---------- */
.overlay{
  position:absolute;inset:0;z-index:10;display:flex;align-items:center;justify-content:center;
  background:rgba(20,50,70,.4);backdrop-filter:blur(4px);padding:16px;
}
.overlay.soft{background:rgba(20,50,70,.25);}
.panel{
  width:min(460px,92vw);
  background:var(--panel);
  border:3px solid #fff;
  border-radius:26px;padding:26px 24px;text-align:center;
  box-shadow:0 20px 60px rgba(0,0,0,.35);
  animation:pop .35s cubic-bezier(.2,1.3,.5,1);
}
@keyframes pop{from{transform:scale(.85);opacity:0}to{transform:scale(1);opacity:1}}
.title{font-size:34px;margin-bottom:4px;color:var(--accent);text-shadow:0 2px 0 #fff;}
.subtitle{opacity:.75;margin-bottom:18px;font-size:15px;color:var(--text);}
.big-emoji{font-size:64px;margin-bottom:6px;animation:bounce 1.2s infinite;}
@keyframes bounce{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.field{margin:14px 0;text-align:left;}
.field-label{font-size:14px;opacity:.8;margin-bottom:8px;font-weight:700;}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;}
.chip{
  border:2px solid rgba(0,0,0,.12);background:rgba(255,255,255,.6);
  color:var(--text);padding:9px 16px;border-radius:999px;font-size:15px;cursor:pointer;transition:.15s;
}
.chip:hover{background:#fff;}
.chip.active{
  background:linear-gradient(135deg,var(--accent),var(--accent2));border-color:transparent;
  color:#fff;font-weight:800;box-shadow:0 6px 16px rgba(255,140,66,.4);
}
.switch{display:flex;align-items:center;gap:8px;font-size:15px;margin:7px 0;cursor:pointer;font-weight:600;}
.switch input{width:18px;height:18px;accent-color:var(--accent);}
.big-btn{
  margin-top:18px;width:100%;border:none;cursor:pointer;
  background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;
  font-size:21px;font-weight:800;padding:14px;border-radius:16px;
  box-shadow:0 10px 24px rgba(255,140,66,.4);transition:.15s;
}
.big-btn:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,140,66,.55);}
.big-btn:active{transform:translateY(1px);}
.ghost-btn{
  margin-top:10px;width:100%;border:2px solid rgba(0,0,0,.18);background:transparent;
  color:var(--text);font-size:16px;padding:11px;border-radius:14px;cursor:pointer;font-weight:700;
}
.ghost-btn:hover{background:rgba(0,0,0,.05);}
.hint{margin-top:14px;font-size:13px;opacity:.7;line-height:1.5;}

/* 飘字反馈 */
.float-text{
  position:absolute;z-index:8;font-weight:800;font-size:26px;pointer-events:none;
  text-shadow:0 2px 6px rgba(0,0,0,.3);animation:floatUp .9s ease-out forwards;
}
@keyframes floatUp{from{transform:translateY(0);opacity:1}to{transform:translateY(-60px);opacity:0}}