:root{
  --bg:#f5efe5;
  --paper:#fcf8f1;
  --ink:#1f2a30;
  --muted:#637078;
  --line:#d4c5af;
  --accent:#115b6c;
  --accent-soft:#d9ecef;
  --gold:#94703c;
  --shadow:0 18px 44px rgba(31,42,48,.12);
  --radius:22px;
  --card-radius:18px;
  --content:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Source Han Serif SC","Noto Serif SC","Songti SC","STSong",serif;
  color:var(--ink);
  background:
    radial-gradient(circle at top left, rgba(17,91,108,.09), transparent 24%),
    radial-gradient(circle at top right, rgba(148,112,60,.10), transparent 22%),
    linear-gradient(180deg,#f8f2e8 0%,#f3ecdf 35%,#f7f1e8 100%);
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.shell{max-width:var(--content);margin:0 auto;padding:28px 20px 72px}
.topbar{
  display:flex;justify-content:space-between;align-items:center;gap:18px;
  padding:14px 18px;border:1px solid rgba(17,91,108,.12);border-radius:999px;
  background:rgba(252,248,241,.78);backdrop-filter:blur(10px);position:sticky;top:14px;z-index:10;
  box-shadow:0 10px 24px rgba(17,91,108,.08);
}
.brand{font-size:15px;font-weight:700;letter-spacing:.02em}
.navlinks{display:flex;flex-wrap:wrap;gap:14px;font-size:14px}
.hero{
  display:grid;grid-template-columns:minmax(0,1.25fr) minmax(320px,.85fr);
  gap:28px;margin-top:26px;align-items:stretch;
}
.hero-copy,.hero-media,.panel,.card,.toc-card,.term-card,.reading-card,.qa-card,.plate-note,.plate-card{
  background:var(--paper);border:1px solid rgba(31,42,48,.08);box-shadow:var(--shadow);
}
.hero-copy,.hero-media,.panel{border-radius:var(--radius)}
.hero-copy{padding:34px}
.eyebrow{display:inline-flex;gap:10px;align-items:center;padding:8px 12px;border-radius:999px;background:var(--accent-soft);color:var(--accent);font-size:13px;font-weight:700}
h1,h2,h3,h4{margin:0 0 14px;line-height:1.2}
h1{font-size:44px}
h2{font-size:30px}
h3{font-size:22px}
h4{font-size:18px}
p{margin:0 0 14px;line-height:1.8}
.lede{font-size:18px;color:#314149}
.meta-list,.stat-row,.chip-row,.mini-links,.path-grid,.plate-grid,.chapter-grid,.concept-grid,.term-grid,.act-grid,.gallery-grid,.related-grid{
  display:grid;gap:18px
}
.meta-list{grid-template-columns:repeat(3,minmax(0,1fr));margin-top:24px}
.meta-item{padding:16px;border:1px solid rgba(31,42,48,.08);border-radius:16px;background:#fffdfa}
.meta-item strong{display:block;font-size:12px;color:var(--muted);margin-bottom:6px;text-transform:uppercase;letter-spacing:.06em}
.hero-media{padding:24px;display:flex;flex-direction:column;gap:18px;justify-content:center}
.cover-frame{
  background:#efe6d7;padding:18px;border-radius:18px;min-height:420px;
  display:flex;align-items:center;justify-content:center;border:1px solid rgba(31,42,48,.08)
}
.cover-frame img,.thumb-frame img,.plate-thumb img{object-fit:contain}
.caption{font-size:13px;color:var(--muted);line-height:1.7}
.section{margin-top:34px}
.section-head{display:flex;justify-content:space-between;gap:16px;align-items:end;margin-bottom:18px}
.section-kicker{font-size:12px;color:var(--gold);text-transform:uppercase;letter-spacing:.12em;font-weight:700}
.card,.plate-card,.reading-card,.term-card,.toc-card{
  border-radius:var(--card-radius);overflow:hidden
}
.card-body,.reading-body,.term-body,.toc-body,.plate-body{padding:20px}
.chapter-grid{grid-template-columns:repeat(auto-fit,minmax(255px,1fr))}
.concept-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.plate-grid,.gallery-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.act-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.term-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.thumb-frame,.plate-thumb{
  background:#ede4d3;padding:18px;aspect-ratio:4 / 5;display:flex;align-items:center;justify-content:center
}
.thumb-frame img,.plate-thumb img{width:100%;height:100%}
.card .chip-row,.plate-card .chip-row{margin-top:12px}
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;
  background:#eef5f6;color:var(--accent);font-size:12px;font-weight:700
}
.muted{color:var(--muted)}
.panel{padding:24px}
.toc-card{padding:0}
.toc-body ul,.bullet-list,.link-list,.rule-list,.mistake-list{margin:0;padding-left:18px;line-height:1.8}
.bullet-list li,.rule-list li,.mistake-list li,.toc-body li{margin-bottom:8px}
.link-list{list-style:none;padding-left:0}
.link-list li{margin:0 0 10px}
.chapter-layout,.concept-layout,.plate-layout{
  display:grid;grid-template-columns:minmax(0,1.2fr) minmax(300px,.8fr);gap:24px;margin-top:28px
}
.sticky-stack{display:grid;gap:18px;align-content:start}
.sticky-stack .panel{position:sticky;top:92px}
.reading-stack{display:grid;gap:16px}
.reading-card{padding:0}
.reading-body strong{display:block;margin-bottom:8px}
.qa-card{border-radius:18px;padding:18px 20px;background:#fff7ea;border:1px solid rgba(148,112,60,.18)}
.qa-card summary{cursor:pointer;font-weight:700}
.qa-card details[open] summary{margin-bottom:10px}
.path-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.path-group{padding:18px;border-radius:18px;background:#fff;border:1px solid rgba(31,42,48,.08)}
.path-group h4{margin-bottom:8px}
.path-group .plate-strip{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;margin-top:14px}
.mini-card{
  border-radius:14px;background:#fbf7f0;border:1px solid rgba(31,42,48,.08);overflow:hidden
}
.mini-card .mini-card-body{padding:10px 12px}
.mini-card h5{margin:0 0 6px;font-size:14px}
.evidence{
  font-size:14px;padding:14px 16px;border-left:4px solid var(--gold);background:#faf4ea;border-radius:12px;
}
.pager{display:flex;justify-content:space-between;gap:16px;margin-top:28px}
.pager a{
  flex:1;padding:16px 18px;border-radius:18px;background:#fff;border:1px solid rgba(31,42,48,.08);
  box-shadow:0 8px 18px rgba(31,42,48,.06)
}
.search-wrap{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.search-wrap input{
  flex:1;min-width:240px;padding:14px 16px;border-radius:999px;border:1px solid rgba(31,42,48,.16);
  background:#fff;font:inherit
}
.plate-hero{
  background:#eee4d0;padding:24px;border-radius:22px;border:1px solid rgba(31,42,48,.08)
}
.plate-hero img{width:100%;height:auto}
.plate-note{border-radius:18px;padding:18px 20px}
.footer-note{margin-top:40px;color:var(--muted);font-size:14px;text-align:center}
[data-search-card].is-hidden{display:none}
@media (max-width:980px){
  h1{font-size:34px}
  .hero,.chapter-layout,.concept-layout,.plate-layout{grid-template-columns:1fr}
  .sticky-stack .panel{position:static}
}
@media (max-width:720px){
  .shell{padding:18px 14px 56px}
  .topbar{border-radius:24px;align-items:flex-start;flex-direction:column}
  .meta-list{grid-template-columns:1fr}
  .pager{flex-direction:column}
  .section-head{flex-direction:column;align-items:flex-start}
}