:root{
  --bg:#F7F6F2; --card:#ffffff; --ink:#2C2C2A; --muted:#5F5E5A; --faint:#B4B2A9;
  --line:#E6E4DC; --green:#1D9E75; --greenDk:#0F6E56; --greenLt:#E1F5EE; --red:#A32D2D;
  --radius:14px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;-webkit-tap-highlight-color:transparent}
#app{max-width:460px;margin:0 auto;min-height:100vh;background:var(--card);padding:20px}
.scr{padding:6px 0}
.h1{font-size:20px;font-weight:600;margin:0 0 4px;text-align:center}
.sub{font-size:14px;color:var(--muted);margin:0 0 20px;text-align:center}
.row{display:flex;align-items:center;gap:10px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;cursor:pointer}
.card:active{transform:scale(.99)}
.avatar{width:80px;height:80px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:34px;font-weight:700}
.name{font-weight:600;font-size:17px}
.muted{color:var(--muted);font-size:13px}
.btn{border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:12px;padding:12px 16px;font-size:16px;font-weight:600;cursor:pointer;width:100%}
.btn:active{transform:scale(.98)}
.btn-primary{border:none;color:#fff}
.btn-ghost{border:1px solid var(--line);background:transparent;color:var(--muted);font-weight:500;font-size:13px;padding:8px 14px;width:auto;border-radius:10px}
.prompt{text-align:center;font-size:44px;font-weight:700;margin:10px 0 6px}
.ansbox{text-align:center;font-size:44px;font-weight:700;min-height:54px;margin-bottom:6px}
.hint{text-align:center;font-size:15px;color:var(--muted);min-height:42px;margin-bottom:10px;line-height:1.4}
.key{height:56px;border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:12px;font-size:24px;font-weight:600;cursor:pointer}
.key:active{background:#f0efe9}
.barwrap{height:8px;background:#efeee8;border-radius:999px;overflow:hidden;margin-bottom:16px}
.barfill{height:100%}
.topbar{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);margin-bottom:8px}
.big{font-size:34px;font-weight:700}
.disc{display:flex;align-items:center;justify-content:space-between;width:100%;text-align:left;border:1px solid var(--line);background:var(--card);border-radius:14px;padding:16px;font-size:17px;font-weight:600;cursor:pointer;margin-bottom:12px;color:var(--ink)}
.disc[disabled]{opacity:.5;cursor:default}
.lock{display:flex;align-items:center;justify-content:center;gap:6px;color:var(--muted);font-size:13px;background:none;border:none;cursor:pointer;width:100%;padding:10px}
.center{text-align:center}
.success{width:88px;height:88px;border-radius:50%;background:var(--greenLt);display:flex;align-items:center;justify-content:center;margin:0 auto 14px;font-size:42px;color:var(--greenDk)}
.pill{display:inline-block;font-size:12px;padding:3px 10px;border-radius:999px}
.dot{width:10px;height:10px;border-radius:50%;display:inline-block}