:root{
  --bg:#f5f7fb;
  --bg2:#e8eef9;
  --surface:#ffffff;
  --surface2:#f9fbff;
  --text:#162033;
  --muted:#5d6b82;
  --line:#dbe3ef;
  --brand:#3566ff;
  --brand2:#6c8cff;
  --accent:#0ea5a4;
  --shadow:0 10px 30px rgba(21,34,66,.10);
  --radius:18px;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0d1320;
    --bg2:#141d30;
    --surface:#121a2b;
    --surface2:#182237;
    --text:#eff4ff;
    --muted:#a9b6d1;
    --line:#28334d;
    --brand:#7da3ff;
    --brand2:#9cb7ff;
    --accent:#4fd4c9;
    --shadow:0 16px 40px rgba(0,0,0,.28);
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: system-ui,-apple-system,"Segoe UI",Roboto,"Hiragino Sans","Yu Gothic UI","Yu Gothic",sans-serif;
  color:var(--text);
  background:linear-gradient(180deg,var(--bg),var(--bg2));
  line-height:1.7;
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;border-radius:16px;display:block}
.site-header{
  position:sticky;top:0;z-index:20;
  backdrop-filter: blur(12px);
  background:color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom:1px solid var(--line);
}
.header-inner,.container{max-width:1180px;margin:0 auto;padding:0 20px}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:68px}
.brand{font-weight:800;letter-spacing:.03em;color:var(--text);font-size:1.05rem}
.brand small{display:block;color:var(--muted);font-weight:600;font-size:.72rem;letter-spacing:.04em}
.main-nav{display:flex;gap:16px;flex-wrap:wrap}
.main-nav a{color:var(--muted);font-weight:700}
.main-nav a:hover{color:var(--brand);text-decoration:none}
.hero{padding:52px 0 30px}
.hero-card{
  background:linear-gradient(135deg,color-mix(in srgb,var(--brand) 14%, var(--surface)),var(--surface));
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  border-radius:28px;
  padding:34px;
}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--surface2);border:1px solid var(--line);border-radius:999px;padding:7px 12px;font-size:.9rem;color:var(--muted);font-weight:700}
.hero h1,.page-hero h1{font-size:clamp(2rem,4vw,3.3rem);line-height:1.15;margin:16px 0 14px}
.hero p.lead,.page-hero p.lead{font-size:1.04rem;color:var(--muted);max-width:780px;margin:0}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:24px}
.stat{
  background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);
  border-radius:20px;padding:16px 18px
}
.stat strong{display:block;font-size:1.55rem;line-height:1.1}
.stat span{color:var(--muted);font-size:.95rem}
.section{padding:18px 0 22px}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:18px}
.section-head h2{margin:0;font-size:1.6rem}
.section-head p{margin:4px 0 0;color:var(--muted)}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.search{
  width:min(100%,460px);padding:13px 15px;border-radius:14px;border:1px solid var(--line);background:var(--surface);color:var(--text);
  box-shadow:var(--shadow)
}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:22px;overflow:hidden;
  box-shadow:var(--shadow); color:inherit; text-decoration:none;
}
.card:hover{transform:translateY(-2px);text-decoration:none}
.card-thumb{aspect-ratio:16/9;background:var(--surface2);display:flex;align-items:center;justify-content:center;overflow:hidden}
.card-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0}
.placeholder{font-size:2rem;color:var(--brand);font-weight:800}
.card-body{padding:18px}
.card-badge{display:inline-block;border-radius:999px;background:var(--surface2);border:1px solid var(--line);padding:5px 10px;font-size:.8rem;color:var(--muted);font-weight:700;margin-bottom:8px}
.card h3{margin:0 0 6px;font-size:1.18rem}
.card-sub{margin:0 0 8px;color:var(--brand);font-weight:700;font-size:.92rem}
.card-text{margin:0;color:var(--muted);font-size:.95rem}
.page-hero{padding:34px 0 20px}
.page-shell{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;padding-bottom:48px}
.main-panel,.side-panel{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:24px}
.main-panel{padding:26px}
.side-panel{padding:22px;height:max-content;position:sticky;top:92px}
.breadcrumbs{display:flex;flex-wrap:wrap;gap:8px;font-size:.92rem;color:var(--muted);margin-bottom:8px}
.breadcrumbs a{color:var(--muted)}
.page-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.pill{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border:1px solid var(--line);border-radius:999px;background:var(--surface2);color:var(--muted);font-size:.88rem;font-weight:700}
.quicklist{display:grid;gap:14px}
.quicklist h3,.side-panel h3{margin:0 0 8px;font-size:1.05rem}
.quicklist p{margin:0;color:var(--muted);font-size:.94rem}
.side-nav{display:grid;gap:10px}
.side-nav a{display:block;padding:10px 12px;background:var(--surface2);border:1px solid var(--line);border-radius:12px;color:var(--text);font-weight:700}
.side-nav a:hover{text-decoration:none;border-color:var(--brand)}
.content h2,.content h3{margin-top:32px;margin-bottom:12px;line-height:1.3}
.content p{margin:14px 0}
.content ul,.content ol{padding-left:1.3rem}
.content table{width:100%;border-collapse:collapse;font-size:.96rem;background:var(--surface2)}
.content th,.content td{border:1px solid var(--line);padding:12px;vertical-align:top}
.content th{background:color-mix(in srgb,var(--brand) 8%, var(--surface2));text-align:left}
.table-wrap{overflow:auto;border-radius:18px;border:1px solid var(--line);margin:18px 0}
.content .table-wrap table{margin:0;border:none}
.content .table-wrap td,.content .table-wrap th{min-width:110px}
.content figure{margin:20px 0}
.content .gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:20px 0}
.content img{box-shadow:var(--shadow)}
.content .audio-player{margin-top:8px}
.content audio{width:100%;max-width:340px}
.content .media-link,.content .page-link,.content .external-link,.content .audio-link{font-weight:700}
.child-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:20px 0 10px}
.note{padding:16px 18px;border-radius:18px;background:var(--surface2);border:1px dashed var(--line);color:var(--muted);margin:18px 0}
.footer{border-top:1px solid var(--line);padding:28px 0 40px;color:var(--muted)}
.footer p{margin:4px 0}
.hidden{display:none !important}
@media (max-width: 980px){
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .page-shell{grid-template-columns:1fr}
  .side-panel{position:static}
}
@media (max-width: 640px){
  .header-inner{padding:12px 20px;align-items:flex-start}
  .main-nav{gap:10px}
  .hero-card,.main-panel,.side-panel{padding:18px}
  .grid,.child-grid,.stats,.content .gallery{grid-template-columns:1fr}
  .card-thumb{aspect-ratio:16/10}
}