:root{
  --bg:#f7f1e5;
  --paper:#fffaf0;
  --ink:#1f1a16;
  --muted:#6b5c4f;
  --line:#dccdbb;
  --accent:#80583e;
  --shadow:0 18px 40px rgba(74,48,27,.08);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:radial-gradient(circle at top,#fbf6ee 0,#f6eedf 45%,#f3ead8 100%);color:var(--ink);font-family:"Iowan Old Style","Songti SC","STSong","Noto Serif CJK SC",serif;line-height:1.7}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:18px;justify-content:space-between;padding:16px 24px;background:rgba(255,250,240,.88);backdrop-filter:blur(16px);border-bottom:1px solid rgba(128,88,62,.12)}
.brand{font-weight:700}
.topnav{display:flex;gap:16px;color:var(--muted)}
.crumb{color:var(--muted);font-size:14px}
.page{width:min(1180px,calc(100vw - 32px));margin:0 auto;padding:28px 0 64px}
.hero,.detail-hero{display:grid;grid-template-columns:1.3fr .9fr;gap:28px;align-items:center;padding:24px 0 18px}
.hero.compact,.detail-hero.tall{grid-template-columns:1fr}
.eyebrow,.meta{font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
h1,h2,h3{line-height:1.2;margin:0 0 12px}
h1{font-size:clamp(34px,6vw,60px)}
h2{font-size:clamp(24px,3vw,34px)}
h3{font-size:clamp(18px,2vw,24px)}
.lede{font-size:clamp(18px,2.1vw,24px);color:#34271f}
.summary,.statline,.detail-copy p,.section-head p{color:var(--muted)}
.statline{margin-top:14px;font-weight:600}
.thumb-frame{background:#f3ecde;padding:14px;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow)}
.thumb-frame img{width:100%;height:100%;object-fit:contain}
.hero-cover{aspect-ratio:4/5}
.section-block{margin-top:34px;padding:24px;border:1px solid rgba(128,88,62,.12);border-radius:28px;background:rgba(255,250,240,.78);box-shadow:var(--shadow)}
.section-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:18px}
.track-grid,.card-grid,.plate-grid,.source-grid,.glossary-grid{display:grid;gap:18px}
.track-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.card-grid.chapters{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.card-grid.concepts{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.plate-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.plate-grid.small{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.source-grid{grid-template-columns:repeat(auto-fit,minmax(270px,1fr))}
.glossary-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.track-card,.chapter-card,.concept-card,.plate-card,.source-card,.glossary-card{display:block;padding:18px;border-radius:24px;background:var(--paper);border:1px solid rgba(128,88,62,.14);box-shadow:var(--shadow)}
.track-card{border-top:8px solid var(--accent)}
.chapter-card h3,.concept-card h3,.plate-card h3{margin-top:12px}
.chapter-card p,.concept-card p,.plate-copy,.source-card p,.glossary-card p{color:var(--muted)}
.chapter-thumb,.concept-thumb{aspect-ratio:16/10}
.plate-card .thumb-frame{aspect-ratio:4/3}
.plate-copy{padding-top:12px}
.split{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.bullet-list,.ordered-route{margin:0;padding-left:20px}
.path-panel{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:14px;padding:8px 0 4px}
.detail-aside{display:grid;gap:16px}
.qa-box{padding:16px 18px;border:1px dashed var(--line);border-radius:20px;background:#fffdf7}
.qa-box summary{cursor:pointer;font-weight:700}
.plate-group + .plate-group{margin-top:24px}
.pager-line{display:flex;justify-content:space-between;gap:20px}
.image-stage{padding:18px}
.detail-image{width:100%;border-radius:18px;border:1px solid var(--line);background:#f4ecdf;padding:10px}
.searchbox{display:grid;gap:10px;margin-bottom:18px;color:var(--muted)}
.searchbox input{padding:14px 16px;border-radius:16px;border:1px solid var(--line);background:#fffef9;font:inherit}
.is-hidden{display:none!important}
@media (max-width:900px){
  .hero,.detail-hero,.split{grid-template-columns:1fr}
  .topbar{flex-wrap:wrap}
  .pager-line,.section-head{flex-direction:column;align-items:flex-start}
}