:root{
  --paper:#faf7f0; --ink:#2b2622; --red:#b03a2e; --gold:#b98a2f;
  --card:#fffdf8; --line:#e6ddcb; --muted:#8a7f6d;
}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;}
h1,h2,.word{font-family:"Songti SC","STSong","Noto Serif CJK SC",serif}
.top{max-width:760px;margin:0 auto;padding:22px 16px 6px;display:flex;
  justify-content:space-between;align-items:flex-start}
.brand{display:flex;gap:14px;align-items:center}
.seal{width:52px;height:52px;background:var(--red);color:var(--paper);
  border-radius:10px;display:flex;align-items:center;justify-content:center;
  font-size:30px;font-family:"Songti SC","STSong",serif;font-weight:700;
  box-shadow:0 2px 6px rgba(176,58,46,.35)}
h1{margin:0;font-size:30px;letter-spacing:2px}
.sub{margin:2px 0 0;color:var(--muted);font-size:13px}
.lang-btn{background:var(--card);border:1px solid var(--line);border-radius:8px;
  padding:6px 14px;cursor:pointer;font-size:14px;color:var(--ink)}
.lang-btn:hover{border-color:var(--gold)}
main{max-width:760px;margin:0 auto;padding:10px 16px 8px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;
  padding:14px 16px;margin-bottom:12px}
.status{display:flex;gap:10px;justify-content:space-between;text-align:center}
.stat{flex:1}
.stat-label{display:block;font-size:12px;color:var(--muted);margin-bottom:4px}
.stat-num{font-size:24px;font-weight:700}
.stat-num.need{color:var(--red);font-family:"Songti SC","STSong",serif}
.controls{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.btn{background:var(--paper);border:1px solid var(--line);border-radius:8px;
  padding:9px 18px;font-size:15px;cursor:pointer;color:var(--ink)}
.btn:hover{border-color:var(--gold)}
.btn.primary{background:var(--red);border-color:var(--red);color:#fff}
.btn.primary:hover{background:#972f24}
.btn.danger{color:var(--red)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.timer-toggle{margin-left:auto;font-size:14px;color:var(--muted);cursor:pointer}
.msg{min-height:22px;margin:4px 2px;font-size:15px}
.msg.err{color:var(--red)} .msg.ok{color:#3d7a3d}
.hint-box{background:#f7efdb;border:1px solid var(--gold);border-radius:8px;
  padding:8px 12px;font-size:14px;margin:0 0 12px}
.play-row{display:flex;gap:10px}
#answer{flex:1;font-size:20px;padding:10px 12px;border:1px solid var(--line);
  border-radius:8px;background:#fff;font-family:"Songti SC","STSong",serif;letter-spacing:2px}
#answer:focus{outline:2px solid var(--gold);outline-offset:0}
.rule{color:var(--muted);font-size:13px;margin:10px 0 0}
.chain{display:flex;flex-direction:column;gap:10px;margin-bottom:16px}
.entry{background:var(--card);border:1px solid var(--line);border-left:5px solid var(--gold);
  border-radius:10px;padding:10px 14px}
.entry.pc{border-left-color:var(--red)}
.entry .who{font-size:11px;color:var(--muted);letter-spacing:1px}
.entry .word{font-size:24px;letter-spacing:4px;margin:2px 0}
.entry .word b{color:var(--red);font-weight:700}
.entry .py{color:var(--gold);font-size:14px;margin-left:8px;letter-spacing:0}
.entry .mean{font-size:14px;color:#554c3f;margin-top:2px}
.entry.last{box-shadow:0 0 0 2px var(--gold) inset}
footer{max-width:760px;margin:0 auto;padding:14px 16px 30px;text-align:center}
.foot-title{color:var(--muted);font-size:13px;letter-spacing:2px}
.foot-links{display:flex;flex-wrap:wrap;gap:8px 16px;justify-content:center}
.foot-links a{color:var(--ink);text-decoration:none;font-size:14px}
.foot-links a:hover{color:var(--red);text-decoration:underline}
.foot-note{color:var(--muted);font-size:12px;margin-top:14px}
@media (max-width:480px){
  h1{font-size:24px} .entry .word{font-size:20px}
  .stat-num{font-size:20px} .btn{padding:8px 12px;font-size:14px}
}