/* 右边栏 - 产品专题快捷入口（与「请您留言」同色） */
.landing-sidebar {
  position: fixed;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 998;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 48px;
  padding: 20px 0;
  background: linear-gradient(135deg, #c00 0%, #a00 100%);
  border-radius: 8px 0 0 8px;
  box-shadow: -2px 0 12px rgba(0, 0, 0, 0.25);
}
.landing-sidebar-title,
.landing-sidebar a {
  writing-mode: vertical-rl;
  text-orientation: upright;
  letter-spacing: 0.15em;
}
.landing-sidebar-title {
  color: #fff;
  font-size: 13px;
  padding: 12px 0;
  margin-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.5);
}
.landing-sidebar a {
  display: block;
  padding: 12px 0;
  color: #fff;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  transition: background 0.2s;
}
.landing-sidebar a:hover {
  background: rgba(255, 255, 255, 0.35);
}
@media (max-width: 1024px) {
  .landing-sidebar { display: none; }
}