:root{
  --paper:#faf7f0; --card:#fffdf8; --ink:#2b2620; --muted:#8a7f6d;
  --red:#b03a2e; --red-soft:#f6e3df; --line:#e6ddcd; --gold:#c8963e;
  --done:#3e7d4e;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;min-height:100vh;display:flex;flex-direction:column}
a{color:var(--red)}
button{font-family:inherit;cursor:pointer}

.topbar{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 28px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:14px}
.seal{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;background:var(--red);color:#fff;font-family:"Noto Serif SC","Songti SC",serif;font-size:26px;font-weight:700;border-radius:8px;box-shadow:0 2px 8px rgba(176,58,46,.3)}
.seal.big{width:64px;height:64px;font-size:36px}
.brand h1{margin:0;font-family:"Noto Serif SC","Songti SC",serif;font-size:26px;letter-spacing:2px}
.brand p{margin:2px 0 0;color:var(--muted);font-size:13px}
.top-actions{display:flex;align-items:center;gap:12px}
.hint-label{font-size:13px;color:var(--muted);display:flex;align-items:center;gap:6px}
select{padding:6px 8px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);font-size:13px}
.ghost-btn{background:transparent;border:1px solid var(--line);border-radius:8px;padding:7px 14px;font-size:14px;color:var(--ink)}
.ghost-btn:hover{border-color:var(--red);color:var(--red)}
.primary-btn{background:var(--red);color:#fff;border:0;border-radius:8px;padding:10px 22px;font-size:15px}
.primary-btn:hover{background:#933025}

main{flex:1;width:100%;max-width:880px;margin:0 auto;padding:28px 20px 40px}
.intro{color:var(--muted);font-size:15px;line-height:1.7;margin:0 0 22px}

.shelf-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.book{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px;text-align:left;width:100%;transition:border-color .15s,transform .15s}
.book:hover{border-color:var(--red);transform:translateY(-2px)}
.book h3{margin:0 0 4px;font-family:"Noto Serif SC","Songti SC",serif;font-size:21px;letter-spacing:1px}
.book .author{color:var(--muted);font-size:13px;margin:0 0 10px}
.book .first-line{font-family:"Noto Serif SC","Songti SC",serif;font-size:15px;color:#57503f;margin:0 0 14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.book .meta-row{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted)}
.level{border:1px solid var(--gold);color:var(--gold);border-radius:20px;padding:2px 10px;font-size:12px}
.book .bar{height:5px;background:var(--line);border-radius:3px;margin-top:12px;overflow:hidden}
.book .bar i{display:block;height:100%;background:var(--done)}
.book .done-tag{color:var(--done);font-weight:600}

.reader-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:14px}
.reader-title{text-align:center}
.reader-title h2{margin:0;font-family:"Noto Serif SC","Songti SC",serif;font-size:28px;letter-spacing:3px}
.reader-title p{margin:4px 0 0;color:var(--muted);font-size:13px}

.stats{display:flex;gap:10px;justify-content:center;margin-bottom:10px;flex-wrap:wrap}
.stat{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:8px 18px;text-align:center;min-width:92px}
.stat-num{display:block;font-size:19px;font-weight:700}
.stat-label{font-size:11px;color:var(--muted)}
.progress-track{height:6px;background:var(--line);border-radius:3px;overflow:hidden;margin-bottom:22px}
#progressBar{height:100%;width:0;background:var(--red);transition:width .2s}

#stage{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:30px 28px 20px;position:relative;outline:none}
#stage:focus{border-color:var(--gold)}
#stage.fresh{animation:pulse-border 1.6s ease-in-out infinite}
@keyframes pulse-border{0%,100%{border-color:var(--line)}50%{border-color:var(--red)}}
.current-hint{min-height:44px;text-align:center;font-size:30px;letter-spacing:3px;color:var(--red);font-weight:600}
.current-hint .typed{color:var(--done)}
.current-hint .rest{color:#d8c9b8}
.current-hint.error{animation:shake .25s}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-6px)}75%{transform:translateX(6px)}}
.text-body{font-family:"Noto Serif SC","Songti SC","Songti SC",serif;font-size:40px;line-height:2.1;letter-spacing:2px;text-align:center}
.text-body .line{display:block}
.unit{position:relative;color:#cfc4ae;transition:color .15s}
.unit ruby rt{font-size:12px;color:var(--muted);letter-spacing:0;font-family:"PingFang SC",sans-serif}
.unit.done{color:var(--ink)}
.unit.current{color:var(--gold)}
.unit.current::after{content:"";position:absolute;left:8%;right:8%;bottom:-4px;height:3px;background:var(--red);border-radius:2px}
.unit.punct{color:#d8cdb4}
.unit.punct.done{color:#9a8f78}
.kbd-tip{text-align:center;color:var(--muted);font-size:12px;margin:18px 0 4px}
#mobileInput{position:absolute;opacity:0;pointer-events:none;height:1px;width:1px;bottom:0;left:0}
.text-note{color:var(--muted);font-size:13px;text-align:center;margin-top:14px}

.overlay{position:fixed;inset:0;background:rgba(43,38,32,.55);display:flex;align-items:center;justify-content:center;padding:20px;z-index:10}
.overlay[hidden]{display:none}
.overlay-card{background:var(--card);border-radius:16px;padding:36px 40px;text-align:center;max-width:420px;width:100%}
.overlay-card h2{font-family:"Noto Serif SC","Songti SC",serif;letter-spacing:4px;margin:16px 0 4px}
.done-name{color:var(--muted);margin:0 0 20px}
.done-stats{display:flex;justify-content:center;gap:28px;margin-bottom:24px}
.done-stats strong{display:block;font-size:24px}
.done-stats span{font-size:12px;color:var(--muted)}
.done-actions{display:flex;gap:12px;justify-content:center}

.mode-tabs{display:flex;gap:10px;margin:0 0 6px}
.mode-tab{border:1px solid var(--line);background:var(--card);border-radius:24px;padding:9px 22px;font-size:15px;font-family:"Noto Serif SC","Songti SC",serif;letter-spacing:1px;color:var(--muted)}
.mode-tab.active{background:var(--red);border-color:var(--red);color:#fff}
.weekly-note{color:var(--muted);font-size:12px;margin:0 0 18px}
.reader-actions{display:flex;gap:8px}
.text-body.en{font-family:Georgia,"Times New Roman",serif;font-size:29px;letter-spacing:0;line-height:2;text-align:left}
.text-body.en .unit{margin-right:.26em}
.text-body.en .unit.punct{margin-right:.26em}
.book .first-line.en{font-family:Georgia,serif;letter-spacing:0}

footer{border-top:1px solid var(--line);padding:20px 28px;text-align:center;color:var(--muted);font-size:13px}
.foot-links{display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:center;align-items:center;margin-bottom:12px}
.foot-label{font-weight:600;color:var(--ink)}
.foot-links a{color:var(--muted);text-decoration:none}
.foot-links a:hover{color:var(--red);text-decoration:underline}

@media (max-width:560px){
  .text-body{font-size:31px;line-height:2}
  .current-hint{font-size:24px}
  main{padding:20px 14px 32px}
  #stage{padding:22px 14px 14px}
}