:root{
  --bg:#eef3ec;
  --paper:#fbfdf8;
  --paper-2:#f2f7ef;
  --line:#cfd8c8;
  --text:#1d2a20;
  --muted:#5b6c60;
  --accent:#8b6430;
  --accent-2:#2e675d;
  --accent-soft:#e7efe6;
  --shadow:0 14px 34px rgba(34,63,45,.08);
}
*{box-sizing:border-box}
body{margin:0;font-family:"PingFang SC","Hiragino Sans GB","Noto Sans SC","Microsoft YaHei",sans-serif;background:linear-gradient(180deg,#f7faf4 0%,#ecf2e8 100%);color:var(--text)}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.site-shell{min-height:100vh}
.topbar{position:sticky;top:0;z-index:10;display:flex;justify-content:space-between;align-items:center;padding:14px 24px;background:rgba(247,250,244,.94);backdrop-filter:blur(10px);border-bottom:1px solid rgba(174,189,177,.6)}
.brand{font-weight:800;letter-spacing:.02em}
.topnav{display:flex;gap:12px;flex-wrap:wrap}
.topnav a{padding:8px 12px;border-radius:999px;color:var(--muted)}
.topnav a:hover{background:var(--paper);color:var(--text)}
.page{max-width:1280px;margin:0 auto;padding:28px 24px 76px}
.hero,.detail-hero{display:grid;grid-template-columns:1.08fr .92fr;gap:24px;padding:24px;background:rgba(251,253,248,.94);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);margin-bottom:24px}
.hero-copy,.hero-visual,.content-block,.chapter-card,.concept-card,.plate-card,.viewer-panel,.source-item-deep,.small-card,.metric{background:var(--paper);border:1px solid rgba(207,216,200,.94);border-radius:10px}
.hero-copy,.hero-visual{padding:22px}
.hero h1,.detail-hero h1{margin:0 0 12px;font-size:40px;line-height:1.14;letter-spacing:0}
.hero-lead,.chapter-summary,.content-block p,.source-item-deep p,.chapter-card p,.concept-card p,.plate-card p,.small-card p,.section-note{color:var(--muted);line-height:1.8}
.hero-points,.bullet-list,.ordered-points,.concept-expand-list{margin:0;padding-left:20px;line-height:1.8}
.eyebrow{font-size:12px;color:var(--accent);margin-bottom:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}
.hero-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:14px}
.media-frame{background:var(--paper-2);border:1px solid var(--line);border-radius:8px;padding:12px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.hero-cover-frame,.hero-grid-frame,.plate-thumb,.mini-thumb,.thumb-frame{background:#f0f5ec}
.hero-cover-frame{min-height:360px}
.hero-grid-frame{min-height:140px}
.hero-cover-frame img,.hero-grid-frame img,.plate-card img,.mini-plate img,.thumb-button img,.full-plate,.viewer-main{width:100%;object-fit:contain}
.hero-cover-frame img{aspect-ratio:1/1.28}
.hero-grid-frame img{aspect-ratio:1.32/1}
.hero-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-bottom:34px}
.metric{padding:18px}
.metric strong{display:block;font-size:32px}
.section-band{margin-top:34px}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:16px}
.section-head h2{margin:0 0 4px}
.inline-link{padding:10px 14px;border-radius:999px;border:1px solid var(--line);background:var(--paper)}
.card-grid,.plate-showcase,.source-grid,.small-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.chapter-card,.concept-card,.small-card{padding:18px;display:flex;flex-direction:column;gap:10px;min-height:100%}
.chapter-card h2,.concept-card h2,.plate-card h3,.small-card h3{margin:0;font-size:20px;line-height:1.35}
.chapter-card-figure{display:block;background:#f3f8ef;border:1px solid var(--line);border-radius:8px;padding:10px}
.chapter-card-figure img{width:100%;aspect-ratio:1.38/1;object-fit:contain}
.chip-row{display:flex;gap:8px;flex-wrap:wrap}
.chip{display:inline-flex;padding:7px 11px;border-radius:999px;background:rgba(46,103,93,.11);color:var(--accent-2);font-size:13px;font-weight:700}
.plate-card{padding:0;overflow:hidden;display:grid;grid-template-rows:auto 1fr;min-height:100%}
.plate-meta{padding:16px}
.plate-thumb{min-height:240px}
.plate-thumb img{max-height:216px}
.detail-layout{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:20px}
.detail-main,.detail-side,.only-main{display:grid;gap:16px}
.content-block{padding:20px;box-shadow:0 8px 18px rgba(34,63,45,.04)}
.content-block h2,.viewer-panel h3,.plate-group h4,.source-item-deep h4{margin:0 0 12px}
.viewer-panel{padding:18px;position:sticky;top:82px}
.viewer-main{width:100%;max-height:480px;background:#edf3e8;border:1px solid var(--line);border-radius:8px;padding:10px}
.thumb-strip{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:14px}
.thumb-button{display:block;width:100%;border:none;background:transparent;padding:0;text-align:left;cursor:pointer}
.thumb-button span,.mini-plate span{display:block;padding:10px;font-size:13px;line-height:1.6}
.thumb-frame{min-height:124px}
.thumb-frame img{max-height:100px}
.source-item-deep{padding:16px}
.source-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.mini-plate-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.mini-plate{display:block;background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.mini-thumb{min-height:132px}
.mini-thumb img{max-height:108px}
.answer-button,.filter-button{padding:10px 14px;border-radius:999px;border:1px solid var(--line);background:#fff;cursor:pointer}
.answer-panel{margin-top:12px;padding:14px;border-radius:8px;background:var(--accent-soft);line-height:1.8}
.pager{display:flex;justify-content:space-between;gap:12px}
.pager a,.pager-spacer{padding:12px 14px;border:1px solid var(--line);border-radius:8px;background:#fff;flex:1;min-height:50px}
.pager-spacer{visibility:hidden}
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px}
.filter-button.active{background:var(--accent-2);color:#fff;border-color:var(--accent-2)}
.full-plate{width:100%;max-height:760px;background:#edf3e8;border:1px solid var(--line);border-radius:8px;padding:10px}
.concept-expand-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;padding-left:18px}
.concept-expand-list li{padding-right:10px}
.glossary-table{width:100%;border-collapse:collapse;background:var(--paper);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.glossary-table th,.glossary-table td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;line-height:1.7}
.glossary-table th{background:#e9f1e5}
.search{width:100%;padding:13px 14px;border-radius:14px;border:1px solid var(--line);background:var(--paper);font-size:16px;margin-bottom:16px}
.footer-note{font-size:13px;color:var(--muted)}
@media (max-width:1120px){
  .card-grid,.plate-showcase,.source-grid,.small-grid,.hero-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .detail-layout,.hero,.detail-hero{grid-template-columns:1fr}
  .detail-side{position:static}
}
@media (max-width:720px){
  .topbar{padding:14px 16px;flex-direction:column;align-items:flex-start;gap:10px}
  .page{padding:18px}
  .hero h1,.detail-hero h1{font-size:32px}
  .card-grid,.plate-showcase,.source-grid,.mini-plate-grid,.concept-expand-list,.small-grid,.hero-grid,.thumb-strip,.hero-strip{grid-template-columns:1fr}
  .plate-thumb,.hero-cover-frame{min-height:220px}
}