:root {
  --ink: #0b1f3a;
  --ink-2: #16345c;
  --gold: #c9a227;
  --gold-2: #e6c86a;
  --paper: #f4f0e6;
  --card: #fffdf6;
  --line: #d8d0b8;
  --text: #2a2a2a;
  --muted: #5c5a52;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Songti SC", "Source Han Serif SC", "Noto Serif SC", "SimSun", serif;
  background: var(--paper);
  color: var(--text);
  line-height: 1.85;
  font-size: 17px;
}

a { color: var(--ink-2); }
a:hover { color: var(--gold); }

.topbar {
  background: var(--ink);
  color: #f7f1dc;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  height: 68px;
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 3px solid var(--gold);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #f7f1dc;
  text-decoration: none;
  font-size: 22px;
  letter-spacing: 0.12em;
}
.brand svg { flex-shrink: 0; }
.nav { display: flex; gap: 6px; }
.nav a {
  color: #d9d3c2;
  text-decoration: none;
  padding: 8px 16px;
  border: 1px solid transparent;
}
.nav a.is-current {
  color: var(--gold-2);
  border-color: var(--gold);
}

.shell {
  display: grid;
  grid-template-columns: 232px 1fr;
  max-width: 1180px;
  margin: 0 auto;
  min-height: calc(100vh - 68px);
}

.sidecol {
  background: #ebe4d2;
  border-right: 1px solid var(--line);
  padding: 28px 18px;
}
.sidecol h2 {
  font-size: 16px;
  color: var(--ink);
  margin-bottom: 14px;
  font-weight: 700;
}
.sidecol ol {
  list-style: none;
  counter-reset: scene;
}
.sidecol ol li { margin-bottom: 10px; }
.sidecol ol a {
  display: block;
  text-decoration: none;
  padding: 8px 10px;
  background: var(--card);
  border-left: 3px solid var(--gold);
  color: var(--ink);
}

.main { padding: 32px 40px 64px; }
.hero {
  background: linear-gradient(160deg, #102848 0%, #1d3f6b 70%);
  color: #f7f1dc;
  padding: 36px 36px 32px;
  margin-bottom: 36px;
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 24px;
}
.hero h1 {
  font-size: 30px;
  line-height: 1.45;
  margin-bottom: 16px;
}
.hero p { color: #e6dec4; margin-bottom: 22px; }
.btn-dl {
  display: inline-block;
  background: var(--gold);
  color: #1a1404;
  text-decoration: none;
  padding: 12px 26px;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.btn-dl:hover { background: var(--gold-2); color: #1a1404; }
.hero-aside {
  border: 1px solid rgba(201, 162, 39, 0.45);
  padding: 18px;
  font-size: 15px;
}
.hero-aside strong { color: var(--gold-2); display: block; margin-bottom: 8px; }

.block { margin-bottom: 42px; }
.block h2 {
  font-size: 24px;
  color: var(--ink);
  border-bottom: 2px solid var(--gold);
  padding-bottom: 8px;
  margin-bottom: 16px;
}
.block p { margin-bottom: 14px; }
.block ul, .block ol { margin: 0 0 14px 1.4em; }
.scene-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.scene-card {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 16px 18px;
}
.scene-card h3 { font-size: 18px; color: var(--ink-2); margin-bottom: 8px; }

table.data {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  font-size: 15px;
}
table.data th, table.data td {
  border: 1px solid var(--line);
  padding: 8px 10px;
  text-align: left;
}
table.data th { background: #e8dfc4; color: var(--ink); }

.faq-item { margin-bottom: 18px; }
.faq-item h3 { font-size: 18px; color: var(--ink-2); margin-bottom: 6px; }

.site-footer {
  background: var(--ink);
  color: #d4ccb4;
  padding: 28px 40px 36px;
  font-size: 14px;
  line-height: 1.75;
}
.site-footer p { margin-bottom: 8px; }
.foot-nav { margin-bottom: 12px; }
.foot-nav a { color: var(--gold-2); margin-right: 16px; text-decoration: none; }

@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; }
  .sidecol { display: none; }
  .hero { grid-template-columns: 1fr; }
  .scene-grid { grid-template-columns: 1fr; }
  .main { padding: 20px 16px 48px; }
  .topbar { padding: 0 12px; height: auto; flex-wrap: wrap; }
  .nav { width: 100%; padding-bottom: 10px; }
}