:root {
  --ink: #1f1c18;
  --muted: #6b6358;
  --line: #e2d9c8;
  --soft: #fffdf8;
  --paper: #f6f1e7;
  --band: #2a2622;
  --band-soft: #35302b;
  --gold: #d4b56a;
  --gold-soft: #e8d09a;
  --brand: #c9a24a;
  --brand-deep: #8a6d28;
  --max: 1080px;
  --radius: 2px;
  font-family: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.78;
  min-height: 100vh;
}

a { color: var(--brand-deep); text-underline-offset: 3px; }
a:hover { color: #a8842f; }
img { max-width: 100%; height: auto; display: block; }
.wrap { width: min(100% - 2rem, var(--max)); margin-inline: auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(42, 38, 34, 0.96);
  border-bottom: 1px solid #3f3831;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.65rem 0;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--gold-soft);
  text-decoration: none;
  font-weight: 700;
}
.brand img { width: 36px; height: 36px; border-radius: 6px; object-fit: cover; }
.nav-desktop { display: flex; gap: 1rem; flex-wrap: wrap; }
.nav-desktop a {
  color: #cfc5b4;
  text-decoration: none;
  font-size: 0.92rem;
}
.nav-desktop a:hover { color: var(--gold); }
.menu-toggle {
  display: none;
  border: 1px solid var(--gold);
  background: transparent;
  color: var(--gold);
  padding: 0.4rem 0.75rem;
  cursor: pointer;
}
#mobile-nav {
  display: none;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0 1rem 0.85rem;
  border-top: 1px solid #3f3831;
  background: var(--band);
}
#mobile-nav.open { display: flex; }
#mobile-nav a {
  color: var(--gold-soft);
  text-decoration: none;
  padding: 0.45rem 0;
}

.ads-slot {
  background: var(--soft);
  border-bottom: 1px solid var(--line);
}

/* dark-band sections */
.band {
  width: 100%;
  padding: 2.2rem 0;
}
.band-dark {
  background: linear-gradient(180deg, var(--band) 0%, var(--band-soft) 100%);
  color: #f3ebe0;
}
.band-dark a { color: var(--gold); }
.band-dark a:hover { color: var(--gold-soft); }
.band-light {
  background: var(--soft);
  color: var(--ink);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.band .inner { width: min(100% - 2rem, var(--max)); margin-inline: auto; }

.band-dark h1 {
  margin: 0 0 0.6rem;
  font-size: clamp(1.5rem, 3vw, 2.15rem);
  line-height: 1.35;
  color: var(--gold-soft);
}
.band-dark .lead {
  margin: 0;
  max-width: 46rem;
  color: #d8cfc0;
  font-size: 1.05rem;
}
.band h2 {
  margin: 0 0 0.7rem;
  font-size: 1.35rem;
}
.band-dark h2 { color: var(--gold); }
.band-light h2 { color: var(--ink); border-left: 4px solid var(--brand); padding-left: 0.65rem; }
.band h3 {
  margin: 1.1rem 0 0.45rem;
  font-size: 1.05rem;
}
.band-dark h3 { color: var(--gold-soft); }
.band p { margin: 0 0 0.85rem; }
.band ul { margin: 0 0 1rem; padding-left: 1.2rem; }
.band li { margin-bottom: 0.35rem; }

.band-media {
  margin: 1rem 0 0;
}
.band-media img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border: 1px solid rgba(212, 181, 106, 0.35);
}
.band-light .band-media img { border-color: var(--line); }
.band-media figcaption {
  margin-top: 0.45rem;
  font-size: 0.88rem;
}
.band-dark .band-media figcaption { color: #b9ae9b; }
.band-light .band-media figcaption { color: var(--muted); }

.band-split {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 1.2rem;
  align-items: start;
}
.band-split figure { margin: 0; }

.gold-chiprow {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.1rem;
}
.gold-chiprow a {
  text-decoration: none;
  border: 1px solid var(--gold);
  color: var(--gold-soft);
  padding: 0.3rem 0.7rem;
  font-size: 0.86rem;
  font-weight: 600;
}
.gold-chiprow a:hover { background: rgba(212, 181, 106, 0.12); }

.peer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
  margin: 1rem 0 0;
  padding: 0.8rem 1rem;
  border: 1px dashed rgba(212, 181, 106, 0.55);
  background: rgba(0, 0, 0, 0.18);
}
.band-light .peer-links {
  background: #fff8ea;
  border-color: #d8c08a;
}
.peer-links a { font-weight: 600; }

.faq details {
  border: 1px solid rgba(212, 181, 106, 0.35);
  background: rgba(0, 0, 0, 0.2);
  padding: 0.75rem 0.95rem;
  margin-bottom: 0.5rem;
}
.band-light .faq details {
  background: #fff;
  border-color: var(--line);
}
.faq summary { cursor: pointer; font-weight: 600; color: var(--gold-soft); }
.band-light .faq summary { color: var(--ink); }
.faq p { margin: 0.5rem 0 0; }

.page-hero { padding: 1.5rem 0 0.4rem; }
.page-hero h1 { margin: 0 0 0.35rem; font-size: 1.65rem; }
.muted { color: var(--muted); }
.prose { padding-bottom: 2rem; max-width: 48rem; }
.prose h2 { margin-top: 1.35rem; font-size: 1.15rem; color: var(--brand-deep); }

.err-box { padding: 3rem 0; text-align: center; }
.btn {
  display: inline-block;
  padding: 0.55rem 1.1rem;
  text-decoration: none;
  border: 1px solid var(--gold);
}
.btn-primary { background: var(--band); color: var(--gold-soft); }
.btn-primary:hover { background: var(--band-soft); color: #fff; }

.site-footer {
  background: var(--band);
  color: #b9ae9b;
  padding: 1.25rem 0 1.6rem;
  font-size: 0.92rem;
}
.site-footer a { color: var(--gold); text-decoration: none; }
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-bottom: 0.5rem;
}

@media (max-width: 900px) {
  .band-split { grid-template-columns: 1fr; }
  .nav-desktop { display: none; }
  .menu-toggle { display: inline-block; }
}

/* SEO keyword highlight */
strong.kw, .kw{color:var(--accent,var(--brand,#c43b2c));font-weight:700}
mark.kw{background:rgba(196,59,44,.12);color:inherit;padding:0 .15em;border-radius:3px}