* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --gold: #c8a45c;
  --dark: #080808;
  --panel: #121212;
  --line: rgba(200,164,92,0.18);
  --text: #d6d6d6;
  --muted: #9c9c9c;
}
body {
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  background: var(--dark);
  color: var(--text);
  line-height: 1.9;
}
a { color: inherit; }
.page-hero {
  min-height: 46vh;
  padding: 88px 24px 56px;
  display: grid;
  place-items: center;
  text-align: center;
  background: linear-gradient(rgba(0,0,0,0.62), rgba(0,0,0,0.88)), url('主页背景1-优化.jpg') center/cover;
}
.page-hero h1 {
  color: #fff;
  font-size: clamp(2rem, 5vw, 3.7rem);
  letter-spacing: 3px;
  margin-bottom: 14px;
}
.page-hero h1 span { color: var(--gold); }
.page-hero p {
  max-width: 820px;
  margin: 0 auto;
  color: #ddd;
  font-size: 1rem;
  letter-spacing: 1px;
}
.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 40px;
  background: rgba(8,8,8,0.86);
  border-bottom: 1px solid rgba(200,164,92,0.12);
  backdrop-filter: blur(16px);
}
.top-nav .brand {
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 2px;
}
.top-nav .brand span { color: var(--gold); }
.top-nav .links {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}
.top-nav .links a {
  color: #cfcfcf;
  text-decoration: none;
  font-size: 0.9rem;
}
.top-nav .links a:hover { color: var(--gold); }
main {
  max-width: 1120px;
  margin: 0 auto;
  padding: 64px 24px;
}
.section {
  margin-bottom: 54px;
}
.section h2 {
  color: #fff;
  font-size: 1.7rem;
  letter-spacing: 2px;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.section h3 {
  color: #fff;
  font-size: 1.18rem;
  margin-bottom: 10px;
}
.lead {
  color: #ddd;
  font-size: 1rem;
  margin-bottom: 18px;
}
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.grid.two { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 22px;
}
.card p, .card li { color: var(--muted); font-size: 0.95rem; }
.card ul { padding-left: 18px; }
.meta-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.meta {
  background: rgba(255,255,255,0.035);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 4px;
  padding: 14px 16px;
}
.meta strong {
  display: block;
  color: var(--gold);
  font-size: 0.82rem;
  letter-spacing: 1px;
  margin-bottom: 4px;
}
.case-item {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 24px;
  align-items: center;
  padding: 24px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.case-item img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  border-radius: 4px;
}
.tag-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 12px 0;
}
.tag {
  color: #111;
  background: var(--gold);
  border-radius: 3px;
  padding: 4px 8px;
  font-size: 0.78rem;
  font-weight: 700;
}
.cta {
  display: inline-flex;
  margin-top: 16px;
  padding: 10px 18px;
  background: var(--gold);
  color: #080808;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 700;
}
.faq-item {
  padding: 22px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.faq-item h2 {
  border: none;
  padding: 0;
  margin-bottom: 10px;
  font-size: 1.15rem;
}
footer {
  text-align: center;
  padding: 28px 20px;
  color: #777;
  border-top: 1px solid rgba(255,255,255,0.08);
}
@media (max-width: 760px) {
  .top-nav {
    position: static;
    align-items: flex-start;
    gap: 12px;
    padding: 16px 18px;
    flex-direction: column;
  }
  .top-nav .links { gap: 14px; }
  .page-hero { min-height: auto; padding: 54px 18px; }
  main { padding: 42px 18px; }
  .grid,
  .grid.two,
  .meta-list { grid-template-columns: 1fr; }
  .case-item { grid-template-columns: 1fr; gap: 16px; }
}