:root{
  --primary:#b8860b;
  --secondary:#8b6508;
  --accent:#1a5fb4;
  --bg:#fdfaf3;
  --card-bg:#fffdf6;
  --text:#2b2620;
  --text-muted:#6b6256;
  --border:#d9cfb6;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Source Han Serif SC", "Noto Serif SC", "Songti SC", -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", serif;
  font-display:swap;
  background:var(--bg);
  color:var(--text);
  line-height:1.9;
  font-size:18px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration:none;border-bottom:1px dotted var(--border)}
a:hover{color:var(--primary)}
.lf-nav{position:sticky;top:0;background:rgba(253,250,243,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);z-index:50}
.lf-nav-inner{max-width:1080px;margin:0 auto;padding:14px 24px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.lf-brand{font-size:22px;font-weight:900;color:var(--primary);border:none;letter-spacing:1px}
.lf-nav ul{list-style:none;display:flex;gap:22px;flex-wrap:wrap}
.lf-nav ul a{color:var(--text);border:none;font-size:15px}
.lf-nav ul a:hover{color:var(--primary)}
.lf-container{max-width:920px;margin:0 auto;padding:32px 24px}
.lf-hero{padding:80px 24px 60px;text-align:center;background:linear-gradient(180deg,#fffdf6 0%,var(--bg) 100%);border-bottom:1px solid var(--border)}
.lf-hero h1{font-size:clamp(34px,5vw,56px);font-weight:900;letter-spacing:2px;line-height:1.3;color:var(--text);margin-bottom:18px}
.lf-hero .lf-lead{font-size:19px;color:var(--text-muted);max-width:680px;margin:0 auto 28px;font-style:italic}
.lf-hero-cover{margin:36px auto 0;max-width:1080px;border-radius:6px;overflow:hidden;box-shadow:0 12px 40px rgba(184,134,11,.18)}
.lf-chapter-screen{min-height:60vh;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;border-top:1px solid var(--border);border-bottom:1px solid var(--border);margin:60px 0;background:linear-gradient(135deg,#fffdf6,#fbf3e0)}
.lf-chapter-num{font-size:14px;letter-spacing:8px;color:var(--primary);font-weight:700;text-transform:uppercase}
.lf-chapter-title{font-size:clamp(30px,4.5vw,46px);font-weight:900;margin-top:18px;color:var(--text)}
.lf-divider-img{margin:48px auto;max-width:760px;opacity:.85}
h2{font-size:32px;font-weight:900;margin:48px 0 18px;color:var(--text);border-left:6px solid var(--primary);padding-left:16px;line-height:1.4}
h3{font-size:23px;font-weight:800;margin:32px 0 12px;color:var(--secondary)}
p{margin:0 0 22px;text-align:justify}
ul,ol{margin:0 0 22px 24px}
li{margin-bottom:8px}
.lf-quote{font-style:italic;font-size:27px;line-height:1.7;border-left:4px solid var(--primary);padding:8px 0 8px 26px;margin:36px 0;color:var(--secondary)}
.lf-card{background:var(--card-bg);border:1px solid var(--border);border-radius:8px;padding:24px;margin:16px 0;transition:transform .2s}
.lf-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(184,134,11,.12)}
.lf-card h3{margin-top:0}
.lf-card-meta{font-size:13px;color:var(--text-muted);margin-bottom:8px;letter-spacing:1px}
.lf-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;margin:24px 0}
.lf-author-card{display:flex;gap:24px;align-items:flex-start;background:var(--card-bg);border:1px solid var(--border);border-radius:8px;padding:28px;margin:48px 0}
.lf-author-card img{width:120px;height:120px;border-radius:50%;object-fit:cover;border:3px solid var(--primary);flex-shrink:0}
.lf-author-card h4{font-size:20px;margin-bottom:6px;color:var(--primary)}
.lf-author-card p{font-size:15px;color:var(--text-muted);margin-bottom:10px}
.lf-author-card ul{margin-left:18px;font-size:14px}
.lf-fn{vertical-align:super;font-size:.75em;color:var(--accent);cursor:help;text-decoration:none;border:none}
.lf-fn:hover::after{content:attr(data-note);position:absolute;background:var(--text);color:#fffdf6;padding:8px 12px;border-radius:4px;font-size:13px;max-width:280px;line-height:1.5;margin:8px 0 0 -120px;z-index:99;font-style:normal}
.lf-tts{position:fixed;right:24px;bottom:24px;width:54px;height:54px;border-radius:50%;background:var(--primary);color:#fff;border:none;cursor:pointer;font-size:22px;box-shadow:0 6px 20px rgba(184,134,11,.4);z-index:90}
.lf-tts:hover{background:var(--secondary)}
.lf-search{margin:24px 0}
.lf-search input{width:100%;padding:14px 18px;font-size:16px;border:1px solid var(--border);border-radius:6px;background:var(--card-bg);color:var(--text);font-family:inherit}
.lf-tags{display:flex;flex-wrap:wrap;gap:10px;margin:24px 0}
.lf-tag{padding:6px 14px;border:1px solid var(--border);border-radius:20px;font-size:14px;color:var(--secondary);background:var(--card-bg)}
.lf-seo{background:var(--card-bg);border:1px solid var(--border);border-radius:8px;padding:32px;margin:48px 0;font-size:16px;color:var(--text-muted)}
.lf-footer{background:#2b2620;color:#d9cfb6;padding:48px 24px 24px;margin-top:80px}
.lf-footer-inner{max-width:1080px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:32px}
.lf-footer h5{color:var(--primary);font-size:15px;margin-bottom:14px;letter-spacing:2px}
.lf-footer a{color:#d9cfb6;border:none;font-size:14px;display:block;line-height:2.2}
.lf-footer a:hover{color:var(--primary)}
.lf-copyright{max-width:1080px;margin:32px auto 0;padding-top:24px;border-top:1px solid #4a4238;text-align:center;font-size:13px;color:#8b6508}
@media (max-width:768px){
  body{font-size:17px}
  .lf-container{padding:24px 18px}
  .lf-hero{padding:60px 18px 40px}
  .lf-author-card{flex-direction:column;align-items:center;text-align:center}
}