.rfl-site-nav,
.rfl-site-nav * {
  box-sizing: border-box;
}

.rfl-site-nav {
  position: sticky;
  top: 0;
  z-index: 9999;
  width: 100%;
  flex: 0 0 auto;
  color: #3b302c;
  background: rgba(252, 250, 247, 0.97);
  border-bottom: 1px solid rgba(154, 43, 34, 0.18);
  box-shadow: 0 4px 18px rgba(78, 48, 39, 0.06);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.rfl-site-nav__inner {
  display: flex;
  align-items: center;
  gap: 22px;
  width: min(100%, 2048px);
  min-height: 56px;
  margin: 0 auto;
  padding: 8px clamp(16px, 2.5vw, 48px);
}

.rfl-site-nav__brand {
  flex: 0 0 auto;
  color: #992d24;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  font-weight: 760;
  letter-spacing: 0.12em;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}

.rfl-site-nav__links {
  display: flex;
  flex: 1 1 auto;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  min-width: 0;
  overflow: visible;
}

.rfl-site-nav__menu {
  position: relative;
  display: inline-flex;
  flex: 0 0 auto;
  align-items: stretch;
}

.rfl-site-nav__dropdown {
  position: static;
  display: flex;
  align-items: stretch;
}

.rfl-site-nav__menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 25px;
  min-height: 36px;
  margin-left: -8px;
  color: #6f625d;
  border: 0;
  border-radius: 0 9px 9px 0;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.rfl-site-nav__menu-toggle::-webkit-details-marker {
  display: none;
}

.rfl-site-nav__menu:hover .rfl-site-nav__menu-toggle,
.rfl-site-nav__dropdown[open] .rfl-site-nav__menu-toggle {
  color: #8f281f;
  background: #f4e7e3;
}

.rfl-site-nav__submenu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  display: none;
  min-width: 132px;
  padding: 7px;
  background: #fffdfb;
  border: 1px solid #e4d7d1;
  border-radius: 11px;
  box-shadow: 0 12px 34px rgba(78, 48, 39, 0.16);
}

.rfl-site-nav__menu:hover .rfl-site-nav__submenu,
.rfl-site-nav__menu:focus-within .rfl-site-nav__submenu,
.rfl-site-nav__dropdown[open] .rfl-site-nav__submenu {
  display: grid;
  gap: 3px;
}

.rfl-site-nav__sub-link {
  display: flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  color: #6f625d;
  border-radius: 7px;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}

.rfl-site-nav__sub-link:hover {
  color: #8f281f;
  background: #f4e7e3;
}

.rfl-site-nav__sub-link.is-active,
.rfl-site-nav__sub-link[aria-current="page"] {
  color: #fffaf7;
  background: #9a2b22;
}

@media (min-width: 761px) {
  .rfl-viewpoints-page .sidebar {
    top: 56px;
    height: 56px;
    min-height: 56px;
    max-height: 56px;
  }

  .rfl-viewpoints-page .topbar {
    top: 112px;
  }
}

.rfl-site-nav__link {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 14px;
  color: #6f625d;
  border: 1px solid transparent;
  border-radius: 9px;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  transition: color 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.rfl-site-nav__link:hover {
  color: #8f281f;
  background: #f4e7e3;
  border-color: #e4c6bf;
}

.rfl-site-nav__link.is-active,
.rfl-site-nav__link[aria-current="page"] {
  color: #fffaf7;
  background: #9a2b22;
  border-color: #9a2b22;
}

.rfl-site-nav__brand:focus-visible,
.rfl-site-nav__link:focus-visible,
.rfl-site-nav__sub-link:focus-visible,
.rfl-site-nav__menu-toggle:focus-visible {
  outline: 3px solid rgba(154, 43, 34, 0.28);
  outline-offset: 2px;
}

@media (max-width: 760px) {
  .rfl-viewpoints-page .rfl-site-nav {
    position: relative;
  }

  .rfl-viewpoints-page .sidebar {
    top: 0;
  }

  .rfl-site-nav__inner {
    display: block;
    min-height: auto;
    padding: 9px 12px 8px;
  }

  .rfl-site-nav__brand {
    display: block;
    margin: 0 4px 7px;
    font-size: 12px;
  }

  .rfl-site-nav__links {
    justify-content: flex-start;
    flex-wrap: wrap;
    margin: 0 -12px;
    padding: 0 12px;
  }

  .rfl-site-nav__link {
    min-height: 34px;
    padding: 0 12px;
    font-size: 13px;
  }

  .rfl-site-nav__menu-toggle {
    min-height: 34px;
  }
}