:root{
  --bg:#f3eee4;
  --paper:#fffdf8;
  --ink:#1d282d;
  --muted:#58666c;
  --line:#d4ccc0;
  --accent:#1f6a72;
  --accent-soft:#dff0ec;
  --warn:#8b5c34;
  --shadow:0 22px 58px rgba(34,45,47,.11);
  --radius:24px;
  --card-radius:18px;
  --max:1180px;
}
*{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(31,106,114,.12), transparent 24%),
    radial-gradient(circle at right top, rgba(139,92,52,.10), transparent 18%),
    linear-gradient(180deg,#f7f2e8 0%,#f3eee4 45%,#f8f4ec 100%);
}
a{color:var(--accent);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:24px 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,.86);backdrop-filter:blur(12px);
  border:1px solid rgba(31,106,114,.12);box-shadow:0 10px 24px rgba(28,44,47,.08)
}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{
  width:42px;height:42px;display:grid;place-items:center;border-radius:14px;background:#1d6068;color:#f8fbfa;
  font-family:"STSong","Songti SC",serif;font-size:24px;box-shadow:inset 0 0 0 1px rgba(255,255,255,.12)
}
.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(0,1.2fr) minmax(320px,.8fr);gap:26px;margin-top:28px;align-items:stretch
}
.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(29,40,45,.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;justify-content:center}
.lede{font-size:18px;color:#3d4b52}
.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(--warn);font-weight:800;margin-bottom:10px}
.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(29,40,45,.08)}
.meta-card strong{display:block;font-size:12px;color:var(--muted);margin-bottom:6px}
.cover-frame{
  background:#efe7d8;padding:18px;border-radius:20px;min-height:360px;display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(29,40,45,.08)
}
.cover-frame img{width:100%;height:100%;object-fit:contain}
.raw-frame img{object-fit:contain}
.warning-note{padding:16px 18px;border-radius:18px;background:#fff8ef}
.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(29,40,45,.16);background:#fff;font:inherit
}
.route-grid,.card-grid,.plate-grid,.term-grid,.mini-grid,.path-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(248px,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(160px,1fr))}
.path-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.route-card,.card,.term-card,.mini-card,.reading-card{border-radius:var(--card-radius);overflow:hidden}
.route-card,.term-card{padding:18px}
.route-card ul,.bullet-list,.link-list{padding-left:18px;line-height:1.8}
.card-body,.mini-card-body,.reading-body,.term-body{padding:18px}
.thumb-frame{
  background:#efe7d8;padding:16px;aspect-ratio:4 / 3;display:flex;align-items:center;justify-content:center
}
.thumb-frame img{width:100%;height:100%;object-fit:contain}
.mini-card h5{font-size:15px}
.mini-card p,.card p,.route-card p,.term-card p,.reading-card p,.warning-note p{color:var(--muted);line-height:1.75}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.chip{display:inline-flex;padding:6px 10px;border-radius:999px;background:#edf5f3;color:var(--accent);font-size:12px;font-weight:700}
.page-hero{padding-top:24px}
.detail-layout{display:grid;grid-template-columns:minmax(0,1.16fr) minmax(300px,.84fr);gap:24px;margin-top:28px}
.sticky-column{display:grid;align-content:start;gap:18px}
.sticky-column .panel{position:sticky;top:92px}
.link-list{list-style:none;padding-left:0}
.path-group{padding:18px;border-radius:18px;background:#fff;border:1px solid rgba(29,40,45,.08);box-shadow:var(--shadow)}
.reading-stack{display:grid;gap:16px}
.qa-card{padding:18px 20px;border-radius:18px;background:#fff7ea}
.qa-card summary{cursor:pointer;font-weight:700}
.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(29,40,45,.08);box-shadow:0 8px 20px rgba(29,40,45,.06)
}
.footer-note{margin-top:42px;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 50px}
  .topbar{border-radius:22px;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}
}