@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+TC:wght@400;600;700&display=swap');

:root{
  --primary:#4a1607;
  --primary2:#75250b;
  --accent:#c47a32;
  --accent2:#a84a18;
  --paper:#fff;
  --bg:#f7f2e9;
  --soft:#f2e5d4;
  --line:#ded2c1;
  --ink:#20150e;
  --muted:#6b5648;
  --shadow:0 12px 35px rgba(74,22,7,.12);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  padding:32px 16px;
  color:var(--ink);
  background:var(--bg);
  font-family:"Microsoft JhengHei","Noto Serif TC","Times New Roman",serif;
  line-height:1.9;
}
a{color:#7d2b0e}
.container{width:min(1060px,100%);margin:0 auto}

.book-header{
  padding:30px 36px;
  color:#f6ead6;
  background:linear-gradient(135deg,var(--primary),var(--primary2));
  border-bottom:5px solid var(--accent);
  border-radius:10px 10px 0 0;
  box-shadow:var(--shadow);
}
.book-header h1{
  margin:0 0 5px;
  font-size:clamp(1.45rem,4vw,1.95rem);
  letter-spacing:.03em;
}
.book-header .subtitle{color:#e6c9a3;font-style:italic}

.page-nav,.top-nav{
  display:flex;
  align-items:center;
  justify-content:center;
  flex-wrap:wrap;
  gap:9px;
  padding:13px 16px;
  background:#fff;
  border:1px solid var(--line);
  border-top:0;
}
.page-nav a,.page-nav .disabled,.top-nav a{
  padding:7px 14px;
  border:1px solid #9e4a1c;
  border-radius:6px;
  font-weight:700;
  text-decoration:none;
}
.page-nav a,.top-nav a{color:#57200d}
.page-nav a:hover,.top-nav a:hover{color:#fff;background:#9e4a1c}
.page-nav .disabled{color:#aaa;border-color:#ddd}
.page-nav .home-btn,.top-nav .home-btn{
  color:#fff;
  background:#6d28d9;
  border-color:#6d28d9;
}

.control-panel{
  padding:16px 18px;
  margin-bottom:22px;
  background:#fff;
  border:1px solid var(--line);
  border-top:0;
}
.jump-bar{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:12px;
}
.jump-group label{
  display:block;
  margin-bottom:4px;
  color:#57200d;
  font-weight:700;
}
.jump-group select{
  width:100%;
  min-height:43px;
  padding:8px 11px;
  border:1px solid #c58c59;
  border-radius:6px;
  background:#fff;
  font:inherit;
}

.article,.landing-card{
  padding:28px 32px;
  margin-bottom:22px;
  background:#fff;
  border:1px solid #e2d8cb;
  border-radius:8px;
  box-shadow:var(--shadow);
}
.page-main-title{
  padding:13px 18px;
  margin:0 0 8px;
  color:var(--primary);
  background:var(--soft);
  border-left:8px solid var(--accent2);
  border-radius:0 6px 6px 0;
  font-size:1.45rem;
}
.article-meta{
  margin:0 0 24px;
  color:var(--muted);
  font-size:.95rem;
}
.para{
  text-align:justify;
  margin:0 0 1.15em;
}
.section-title{
  margin-top:1.7em;
  padding-left:12px;
  color:var(--primary);
  border-left:6px solid var(--accent2);
}
.subsection-title{
  margin-top:1.5em;
  color:#64230d;
  border-bottom:1px solid #dcc7b1;
}
.article hr{
  border:0;
  border-top:1px solid var(--line);
  margin:2em 0;
}
.language-note{
  margin:0;
  color:var(--muted);
}

.copyright{
  padding:20px 25px;
  margin-top:38px;
  color:#4f3524;
  background:#efe2d1;
  border-top:3px solid var(--accent2);
  border-radius:0 0 9px 9px;
  font-size:.88rem;
}
.copyright h3{margin:0 0 6px;color:var(--primary)}

@media(max-width:780px){
  body{padding:18px 9px}
  .book-header{padding:23px 20px}
  .jump-bar{grid-template-columns:1fr}
  .article,.landing-card{padding:22px 17px}
}