:root{
  --bg:#f7f4ee; --paper:#fffaf1; --ink:#2a2118; --muted:#766b5d;
  --line:#e8dccb; --gold:#b8843f; --deep:#25180f; --accent:#7c4b20;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:"Noto Serif SC","Songti SC","STSong","SimSun",serif;color:var(--ink);background:var(--bg);line-height:1.8}
a{color:inherit;text-decoration:none}
.site-nav{height:56px;display:flex;align-items:center;justify-content:space-between;padding:0 24px;border-bottom:1px solid var(--line);background:rgba(255,250,241,.92);position:sticky;top:0;z-index:20;backdrop-filter:blur(10px)}
.site-nav .brand{font-weight:700;letter-spacing:.06em}
.site-nav .links{display:flex;gap:18px;font-size:14px;color:var(--muted)}
.hero{max-width:1080px;margin:0 auto;padding:72px 24px 42px;display:grid;grid-template-columns:1.05fr .95fr;gap:42px;align-items:center}
.eyebrow{color:var(--gold);font-weight:700;letter-spacing:.18em;font-size:14px;margin-bottom:14px}
h1.book-title{font-size:62px;line-height:1.05;margin:0 0 18px;letter-spacing:.2em}
.subtitle{font-size:24px;color:var(--accent);letter-spacing:.35em;margin-bottom:20px}
.author{color:var(--muted);font-size:17px;margin-bottom:30px}
.hero-card{background:linear-gradient(135deg,#fffaf0,#f3e4cd);border:1px solid var(--line);border-radius:28px;padding:38px;box-shadow:0 20px 60px rgba(65,42,18,.12)}
.hero-card h2{font-size:27px;margin:0 0 14px}
.hero-card p{color:#5c5043;margin:0 0 16px}
.actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:26px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-width:132px;padding:12px 20px;border-radius:999px;border:1px solid var(--gold);font-weight:700;background:var(--deep);color:#fff}
.btn.secondary{background:transparent;color:var(--accent)}
.section{max-width:1080px;margin:0 auto;padding:38px 24px}
.section h2{font-size:30px;margin:0 0 18px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature{background:rgba(255,250,241,.82);border:1px solid var(--line);border-radius:20px;padding:22px}
.feature h3{margin:0 0 8px;color:var(--accent)}
.feature p{margin:0;color:var(--muted);font-size:15px}
.toc-block{background:#fffaf1;border:1px solid var(--line);border-radius:24px;padding:28px}
.part-title{margin:22px 0 10px;color:var(--accent);font-weight:700}
.chapter-list{display:grid;grid-template-columns:repeat(2,1fr);gap:8px 24px}
.chapter-list a{padding:6px 0;border-bottom:1px dashed #e4d4bd;color:#3b2d20}
.footer{padding:40px 24px;text-align:center;color:var(--muted);font-size:14px}
.reader-shell{display:grid;grid-template-columns:300px 1fr;min-height:calc(100vh - 56px)}
.reader-toc{border-right:1px solid var(--line);background:#fffaf1;padding:20px;position:sticky;top:56px;height:calc(100vh - 56px);overflow:auto}
.reader-toc h3{margin:0 0 16px}
.reader-toc .toc-part{margin:18px 0 8px;color:var(--accent);font-weight:700}
.reader-toc button{display:block;width:100%;text-align:left;border:0;background:transparent;border-bottom:1px solid #eadcca;padding:9px 4px;cursor:pointer;color:#3c2e21;font-family:inherit;font-size:15px}
.reader-toc button.active{color:#9a6527;font-weight:700}
.reader-main{padding:32px 24px 80px}
.reader-article{max-width:780px;margin:0 auto;background:#fffaf1;border:1px solid var(--line);border-radius:24px;padding:48px 56px;box-shadow:0 16px 50px rgba(65,42,18,.08)}
.reader-article h1{font-size:34px;line-height:1.35;margin:0 0 28px;text-align:center}
.reader-article h2{font-size:22px;line-height:1.45;margin:34px 0 12px;color:var(--accent)}
.reader-article p{text-indent:2em;margin:0 0 12px}
.reader-article .part-intro{border:1px solid #eadcca;background:#fff5e4;border-radius:18px;padding:24px;margin-bottom:34px}
.reader-article .part-intro h2{text-align:center;margin-top:0}
.reader-controls{max-width:780px;margin:18px auto 0;display:flex;justify-content:space-between;gap:12px}
.reader-controls button,.audio-controls button,.speed-btn{border:1px solid var(--line);background:#fffaf1;border-radius:999px;padding:8px 14px;cursor:pointer;font-family:inherit}
.audio-page{background:linear-gradient(180deg,#21150e,#3a2416);min-height:100vh;color:#fff}
.audio-page .site-nav{background:#fffaf1;color:var(--ink)}
.audio-wrap{max-width:960px;margin:0 auto;padding:44px 20px 80px}
.audio-hero{text-align:center;margin-bottom:26px}
.audio-hero h1{font-size:44px;margin:0 0 8px;letter-spacing:.08em}
.player{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:24px;padding:26px;box-shadow:0 20px 60px rgba(0,0,0,.25)}
.now-title{font-size:22px;text-align:center;margin-bottom:16px}
audio{width:100%;margin:12px 0 10px}
.audio-controls{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin:12px 0}
.audio-controls button,.speed-btn{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.2)}
.speed-row{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:8px}
.speed-btn.active{background:#d1a15f;color:#21150e;font-weight:700}
.playlist{margin-top:24px;background:rgba(255,255,255,.07);border-radius:22px;overflow:hidden;border:1px solid rgba(255,255,255,.12)}
.track{display:block;width:100%;background:transparent;border:0;color:#fff;border-bottom:1px solid rgba(255,255,255,.08);padding:14px 18px;text-align:left;cursor:pointer;font-family:inherit}
.track:last-child{border-bottom:0}
.track.active{background:rgba(209,161,95,.23)}
.track-title{display:block;line-height:1.55}
.track-num,.track-voice{display:none}

/* Reading page light copy protection: blocks casual selection/copying. */
.reader-article,.reader-toc{
  -webkit-user-select:none;
  -moz-user-select:none;
  -ms-user-select:none;
  user-select:none;
}
.reader-article img{pointer-events:none}

@media(max-width:860px){
  .hero{grid-template-columns:1fr;padding-top:48px}
  h1.book-title{font-size:48px}
  .grid,.chapter-list{grid-template-columns:1fr}
  .reader-shell{display:block}
  .reader-toc{position:static;height:auto;max-height:none;border-right:0;border-bottom:1px solid var(--line)}
  .reader-article{padding:32px 22px}
}