:root{
  --bg:#f4ede4;
  --paper:#fffdf9;
  --ink:#20282c;
  --muted:#59676c;
  --line:#d7cbbb;
  --accent:#8b533f;
  --accent-2:#315f68;
  --accent-soft:#efe0d8;
  --green:#6b7b44;
  --shadow:0 22px 60px rgba(41,44,48,.10);
  --radius:24px;
  --card-radius:18px;
  --max:1220px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",ui-sans-serif,system-ui,sans-serif;
  color:var(--ink);
  background:
    radial-gradient(circle at left top, rgba(139,83,63,.13), transparent 24%),
    radial-gradient(circle at right top, rgba(49,95,104,.10), transparent 22%),
    linear-gradient(180deg,#f7f1e8 0%,#f3ede4 50%,#f8f4ef 100%);
}
a{color:var(--accent-2);text-decoration:none}
a:hover{text-decoration:underline}
img{display:block;max-width:100%}
h1,h2,h3,h4,h5,p{margin:0 0 14px}
h1,h2,h3{
  font-family:"STSong","Songti SC","Noto Serif CJK SC",serif;
  line-height:1.18;
}
h1{font-size:44px}
h2{font-size:30px}
h3{font-size:22px}
.shell{max-width:var(--max);margin:0 auto;padding:22px 18px 64px}
.topbar{
  position:sticky;top:12px;z-index:20;display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding:14px 18px;border-radius:999px;background:rgba(255,252,246,.88);backdrop-filter:blur(12px);
  border:1px solid rgba(49,95,104,.14);box-shadow:0 10px 24px rgba(28,42,47,.09)
}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{
  width:42px;height:42px;display:grid;place-items:center;border-radius:14px;background:var(--accent);color:#fff8f3;
  font-family:"STSong","Songti SC",serif;font-size:24px
}
.brand strong{display:block}
.brand span{display:block;font-size:12px;color:var(--muted)}
.navlinks{display:flex;flex-wrap:wrap;gap:10px;font-size:14px}
.hero{display:grid;grid-template-columns:minmax(0,1.18fr) minmax(320px,.82fr);gap:26px;margin-top:30px}
.hero-copy,.hero-media,.panel,.route-card,.card,.mini-card,.term-card,.reading-card,.warning-note,.qa-card{
  background:var(--paper);border:1px solid rgba(32,40,44,.08);box-shadow:var(--shadow)
}
.hero-copy,.hero-media,.panel{border-radius:var(--radius)}
.hero-copy{padding:34px}
.hero-media{padding:22px;display:flex;flex-direction:column;gap:18px}
.lede{font-size:18px;color:#3f4d53}
.eyebrow-pill{
  display:inline-flex;align-items:center;padding:8px 12px;border-radius:999px;background:var(--accent-soft);
  color:var(--accent);font-size:13px;font-weight:800;margin-bottom:16px
}
.eyeline{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);font-weight:800;margin-bottom:10px}
.section-kicker{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);font-weight:800}
.meta-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:20px}
.meta-card{padding:14px 16px;border-radius:16px;background:#fff;border:1px solid rgba(32,40,44,.08)}
.meta-card strong{display:block;font-size:12px;color:var(--muted);margin-bottom:6px}
.cover-frame,.raw-frame{
  background:#f1e8db;padding:18px;border-radius:22px;border:1px solid rgba(32,40,44,.08)
}
.cover-frame{min-height:360px;display:flex;align-items:center;justify-content:center}
.cover-frame img,.raw-frame img,.thumb-frame img{width:100%;height:100%;object-fit:contain}
.warning-note{padding:16px 18px;border-radius:18px;background:#fff8f1}
.section{margin-top:34px}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:16px}
.search-wrap{display:flex;align-items:center;gap:12px}
.search-wrap input{
  min-width:240px;padding:14px 16px;border-radius:999px;border:1px solid rgba(32,40,44,.16);background:#fff;font:inherit
}
.route-grid,.card-grid,.plate-grid,.term-grid,.mini-grid{display:grid;gap:18px}
.route-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.card-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.plate-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.term-grid{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.mini-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}
.route-card,.card,.term-card,.mini-card,.reading-card{border-radius:var(--card-radius);overflow:hidden}
.route-card,.term-card{padding:18px}
.card-body,.mini-card-body,.reading-body,.term-body{padding:18px}
.thumb-frame{
  background:#efe7da;padding:16px;aspect-ratio:4 / 3;display:flex;align-items:center;justify-content:center
}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.chip{display:inline-flex;padding:6px 10px;border-radius:999px;background:#edf4f2;color:var(--accent-2);font-size:12px;font-weight:700}
.bullet-list{padding-left:18px;line-height:1.8}
.page-hero{padding-top:24px}
.detail-layout{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(300px,.85fr);gap:24px;margin-top:28px}
.main-column{display:grid;gap:18px}
.sticky-column{display:grid;align-content:start;gap:18px}
.sticky-column .panel{position:sticky;top:92px}
.reading-stack{display:grid;gap:16px}
.qa-card{padding:18px 20px;border-radius:18px;background:#fff7ec}
.qa-card summary{cursor:pointer;font-weight:700}
.path-panel{
  display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:14px;padding:12px 14px;border-radius:16px;
  background:#fff;border:1px solid rgba(32,40,44,.08);box-shadow:0 8px 20px rgba(32,40,44,.05)
}
.path-join{color:#8a8177}
.viewer-main{display:block;margin:10px 0 12px}
.viewer-main img{border-radius:18px;border:1px solid rgba(32,40,44,.08);background:#f4ecdf;padding:12px}
.thumbs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:14px}
.thumbs img{
  width:100%;aspect-ratio:4 / 3;object-fit:contain;background:#f2ebdf;border-radius:14px;padding:8px;border:1px solid rgba(32,40,44,.08)
}
.plate-route-group{padding:18px;border-radius:18px;background:#fff;border:1px solid rgba(32,40,44,.08);box-shadow:var(--shadow)}
.plate-route-group h3{margin-bottom: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(32,40,44,.08);box-shadow:0 8px 20px rgba(32,40,44,.06)
}
.pager-mini{margin-top:18px}
.term-card p,.card p,.mini-card p,.route-card p,.reading-card p,.panel p,.warning-note p{color:var(--muted);line-height:1.78}
.footer-note{margin-top:40px;text-align:center;color:var(--muted);font-size:14px}
[data-search-card].is-hidden{display:none}
@media (max-width:980px){
  h1{font-size:34px}
  .hero,.detail-layout{grid-template-columns:1fr}
  .sticky-column .panel{position:static}
}
@media (max-width:720px){
  .shell{padding:16px 12px 48px}
  .topbar{border-radius:24px;align-items:flex-start;flex-direction:column}
  .meta-grid{grid-template-columns:1fr}
  .pager{flex-direction:column}
  .section-head{flex-direction:column;align-items:flex-start}
  .search-wrap{width:100%}
  .search-wrap input{width:100%;min-width:0}
  .thumbs{grid-template-columns:repeat(2,minmax(0,1fr))}
}