* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: Georgia, "Songti SC", SimSun, "Microsoft YaHei", serif;
  color: #1a2433;
  background: #e8edf3;
  font-size: 15px;
  line-height: 1.75;
  display: flex;
  min-height: 100vh;
}
a { color: #8a6d12; }
a:hover { color: #5c4a0c; }

.rail {
  width: 232px;
  flex-shrink: 0;
  background: #0b1f3a;
  color: #e6edf5;
  padding: 28px 18px 40px;
  position: sticky;
  top: 0;
  align-self: flex-start;
  min-height: 100vh;
}
.rail .brand {
  font-family: "Microsoft YaHei", sans-serif;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 3px;
  color: #e8c547;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 28px;
}
.rail nav a {
  display: block;
  color: #c5d0dc;
  text-decoration: none;
  padding: 10px 12px;
  margin-bottom: 6px;
  border-left: 3px solid transparent;
  font-family: "Microsoft YaHei", sans-serif;
  font-weight: 600;
}
.rail nav a.current {
  background: #132a4a;
  border-left-color: #e8c547;
  color: #e8c547;
}
.rail .hint {
  margin-top: 32px;
  font-size: 12px;
  color: #8ea0b5;
  line-height: 1.6;
}

.canvas {
  flex: 1;
  min-width: 0;
}
.canvas-inner { max-width: 980px; margin: 0 auto; padding: 28px 28px 48px; }

.hero-box {
  background: #0b1f3a;
  color: #f3f6fa;
  padding: 32px 34px;
  border-bottom: 6px solid #e8c547;
  margin-bottom: 28px;
}
.hero-box h1 {
  font-size: 26px;
  line-height: 1.35;
  margin-bottom: 14px;
  font-weight: 700;
  font-family: "Microsoft YaHei", sans-serif;
}
.hero-box p { margin-bottom: 12px; color: #d5deea; }
.gold-btn {
  display: inline-block;
  background: #e8c547;
  color: #1a1403;
  text-decoration: none;
  font-family: "Microsoft YaHei", sans-serif;
  font-weight: 700;
  padding: 11px 22px;
  margin: 8px 10px 0 0;
}
.gold-btn:hover { background: #f3d76a; color: #1a1403; }
.ghost-btn {
  display: inline-block;
  border: 1px solid #e8c547;
  color: #e8c547;
  text-decoration: none;
  font-family: "Microsoft YaHei", sans-serif;
  padding: 10px 20px;
  margin-top: 8px;
}

.block {
  background: #fff;
  border: 1px solid #d5dde6;
  padding: 22px 24px 18px;
  margin-bottom: 18px;
}
.block h2 {
  font-family: "Microsoft YaHei", sans-serif;
  font-size: 19px;
  color: #0b1f3a;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid #e8c547;
}
.block p { margin-bottom: 10px; text-align: justify; }

.trio {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
  margin: 12px 0;
}
.trio article {
  background: #f7f4ea;
  padding: 12px 14px;
  border-top: 3px solid #0b1f3a;
}
.trio h3 {
  font-family: "Microsoft YaHei", sans-serif;
  font-size: 15px;
  margin: 6px 0;
  color: #0b1f3a;
}

table.grid {
  width: 100%;
  border-collapse: collapse;
  margin: 10px 0;
  font-size: 14px;
}
table.grid th, table.grid td {
  border: 1px solid #cfd7e1;
  padding: 7px 8px;
}
table.grid th { background: #0b1f3a; color: #e8c547; text-align: left; }

.qa { border-top: 1px dotted #c5b07a; padding-top: 10px; margin-top: 10px; }
.qa h3 { font-family: "Microsoft YaHei", sans-serif; font-size: 15px; margin-bottom: 6px; }

.foot {
  background: #0b1f3a;
  color: #b9c6d4;
  padding: 20px 28px;
  font-size: 12px;
  line-height: 1.8;
  font-family: "Microsoft YaHei", sans-serif;
}
.foot a { color: #e8c547; margin-right: 14px; }

@media (max-width: 860px) {
  body { display: block; }
  .rail { width: auto; min-height: 0; position: relative; }
  .rail nav a { display: inline-block; }
  .trio { grid-template-columns: 1fr; }
}