:root {
  --bg: #12100c;
  --bg-card: #1c1814;
  --line: #3d3428;
  --text: #f4efe6;
  --muted: #a89a86;
  --gold: #c9a227;
  --gold-lite: #e8d48b;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
}
a { color: var(--gold-lite); text-decoration: none; }
a:hover { color: #fff4c8; }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 20px; }
.top {
  position: sticky; top: 0; z-index: 20;
  background: rgba(18, 16, 12, 0.94);
  border-bottom: 1px solid var(--line);
}
.top-inner {
  max-width: 1100px; margin: 0 auto; padding: 14px 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.brand { color: var(--gold-lite); font-weight: 800; font-size: 18px; }
.nav { display: flex; flex-wrap: wrap; gap: 14px; font-size: 14px; }
.nav a { color: var(--muted); }
.nav a:hover, .nav a.active { color: var(--gold-lite); }
.hero { padding: 48px 0 12px; }
h1 { font-size: 34px; line-height: 1.25; margin: 0 0 12px; color: #fff8ea; }
h2 { font-size: 22px; color: #fff8ea; margin: 36px 0 12px; }
h3 { font-size: 18px; color: #fff8ea; margin: 24px 0 8px; }
.lead { font-size: 18px; color: var(--muted); }
.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px 22px;
  margin: 16px 0;
}
.btn {
  display: inline-block;
  background: linear-gradient(135deg, #e8d48b, #c9a227);
  color: #12100c !important;
  padding: 12px 20px;
  border-radius: 12px;
  font-weight: 700;
  margin: 8px 8px 8px 0;
}
.btn.alt {
  background: #241f19;
  color: var(--gold-lite) !important;
  border: 1px solid var(--gold);
}
ol, ul { padding-left: 1.3em; }
.foot {
  margin-top: 56px;
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 13px;
}
.disclaimer { color: #5c5246; font-size: 12px; }
.spec { width: 100%; border-collapse: collapse; font-size: 15px; }
.spec th, .spec td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); }
.spec th { color: var(--muted); width: 8em; font-weight: 600; }
@media (max-width: 720px) {
  h1 { font-size: 26px; }
  .nav { display: none; }
}