/* =============== SCREEN READER =============== */

.screen_reader_tq[href] {
  color: rgb(var(--white-color), 1);
  text-decoration: none;
  text-underline-offset: 2px;
  cursor: pointer;
}

.screen_reader_tq {
  padding: 15px 13px;
  border-radius: 12px;
  background-color: rgb(var(--input-background-color), 1);
}


/* =============== SUBHEADER SPACER =============== */

.subheader_ {
  width: 100vw;
  height: 124px;
  transition: 0.05s ease-in-out all;
}

.subheader_.d-none {
  display: block !important;
  height: 0 !important;
}

@media (max-width: 1226px) {
  .subheader_ {
    height: 119px;
  }
}

@media (max-width: 1078px) {
  .subheader_ {
    height: 99px;
  }
}

@media (max-width: 1075px) {
  .subheader_ {
    height: 89px;
  }
}

@media (max-width: 768px) {
  /* second__header скрыт — вычитаем его высоту из spacer */
  .subheader_ {
    height: 69px;
  }
}

/* =============== MAIN HEADER =============== */

header.main_header {
  position: relative;
  width: 100vw;
  top: 0;
  left: 0;
  z-index: 10;
}

header.main_header.shrink {
  position: fixed;
  animation: shrinkHeader 1s ease-in-out;
}

@keyframes shrinkHeader {
  from {
    top: -100%;
    opacity: 0;
    transform: scale(0.75);
  }
  to {
    top: 0;
    opacity: 1;
    transform: scale(1);
  }
}

header.main_header .wrapper_header,
header.main_header .up_bar-wrapper {
  width: 100%;
  max-width: 2080px;
  margin: 0 auto;
  padding: 0 5px;
}

header.main_header .wrapper_header {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 10px;
}

.headerContainer {
  border-bottom: 0.5px solid rgb(var(--white-color), 0.5);
}

header.main_header.shrink .wrapper_header {
  padding: 7px 25px 5px 10px;
}

header.main_header.shrink .wrapper_header .logo-full {
  width: 125px;
}

header.main_header.shrink .wrapper_header .logo-full svg {
  margin-top: 5px;
}

header.main_header .overlay_header,
header.main_header .overlay_header.open {
  display: none;
}

header.main_header .onlyMobile {
  display: none;
}

/* =============== UP BAR =============== */

header.main_header .up_bar {
  position: relative;
  width: 100vw;
  background-color: rgb(var(--main-color), 1);
  padding: 5px 0;
}

header.main_header.shrink .up_bar {
  display: none;
}

header.main_header .up_bar .up_bar_bg {
  background-color: rgb(var(--white-color), 1);
  position: absolute;
  display: block;
  height: 100%;
  width: calc((100vw - 1600px) / 2 + 15px);
  right: 0;
  top: 0;
  pointer-events: none;
}

header.main_header .up_bar .upbar_buttons {
  margin-right: -15px;
  padding-right: 10px;
}

header.main_header .up_bar .upbar_buttons .up_bar_link {
  font-weight: 400;
  font-size: 14px;
  color: rgb(var(--white-color), 1);
  margin-right: 10px;
}

header.main_header .up_bar .upbar_buttons .up_bar_link:hover {
  text-decoration: underline;
}

header.main_header .up_bar .upbar_buttons .eye_button {
  padding: 0 10px;
}

header.main_header .up_bar .upbar_buttons .eye_button a {
  background-color: rgb(var(--white-color), 1);
  pointer-events: none;
}

header.main_header .up_bar .upbar_buttons .e_university {
  padding: 0 25px 0 10px;
}

header.main_header .up_bar .upbar_buttons span.upbar_btn_bg {
  position: absolute;
  height: calc(100% + 10px);
  width: 100%;
  left: 0;
  top: -5px;
  transform: skewX(-25deg);
}

header.main_header .up_bar .upbar_buttons .eye_button span.upbar_btn_bg {
  background-color: rgb(var(--white-color), 0.25);
  cursor: pointer;
}

header.main_header .up_bar .upbar_buttons .eye_button span.upbar_btn_bg:hover {
  background-color: rgb(var(--gold-color), 0.75);
}

header.main_header .up_bar .upbar_buttons .eye_button:hover a {
  color: rgb(var(--gold-color), 1);
  transition: 0.1s;
}

header.main_header
  .up_bar
  .upbar_buttons
  .e_university
  .e-University_text
  span.upbar_btn_bg {
  background-color: rgb(var(--white-color), 1);
}

.e-University_text .e_university:hover {
  cursor: pointer;
}

header .upbar_btn_wrpr {
  padding: 15px 25px;
  border-radius: 12px;
  background-color: rgb(var(--input-background-color), 1);
}

header.upbar_btn_wrp {
  padding: 15px 13px;
  border-radius: 12px;
  background-color: rgb(var(--input-background-color), 1);
}

/* header .eye_button:hover {
  background-color: rgb(var(--gold-color), 1);
} */

/* =============== LANGUAGE SELECTOR =============== */

.language_selector {
  position: relative;
  display: inline-block;
  width: 109px;
}

.language_selector .dropdown-toggle {
  background-color: rgb(var(--input-background-color), 1);
  color: #ffffff;
  padding: 15px 20px;
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-family: "Poppins", sans-serif;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  width: auto;
  gap: 24px;
  border-radius: 10px;
  transition: opacity 0.3s;
}

.language_selector .dropdown-toggle::after {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-right: 2px solid #ffffff;
  border-bottom: 2px solid #ffffff;
  transform: rotate(45deg);
  margin-top: -4px;
  transition: transform 0.3s;
}

.language_selector.open .dropdown-toggle::after {
  transform: rotate(-135deg);
  margin-top: 4px;
}

.language_selector .dropdown-menu {
  display: none;
  position: absolute;
  left: 0;
  top: calc(100% + 4px);
  background-color: rgb(var(--input-background-color), 1);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  width: 100%;
  border-radius: 0 0 8px 8px;
  z-index: 9999;
  overflow: hidden;
}

.language_selector .dropdown-item {
  color: rgb(var(--white-color), 1);
  padding: 12px 20px;
  text-decoration: none;
  display: block;
  font-size: 14px;
  font-family: "Poppins", sans-serif;
  transition: background-color 0.2s;
  white-space: nowrap;
}

.language_selector .dropdown-item:hover {
  background-color: #1a56db;
}

.language_selector .dropdown-item.active {
  font-weight: 600;
  background-color: rgba(255, 255, 255, 0.15);
}

/* =============== BURGER =============== */

header.main_header .wrapper_header .burger_header {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}

header.main_header .wrapper_header .burger_header span {
  display: block;
  border-radius: 15px;
  background-color: rgb(var(--white-color), 1);
  width: 25px;
  height: 2px;
}

/* =============== MAIN NAVIGATION =============== */

header.main_header .wrapper_header .navigation_wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

header.main_header .wrapper_header nav.main_navigation .burgernav_header {
  display: none;
}

header.main_header .main_navigation {
  display: flex;
  align-items: center;
  justify-content: end;
  flex-wrap: wrap;
}

header.main_header.shrink .nav_main-link {
  font-size: 14px;
  margin-left: 10px;
}

header.main_header .nav_main-element {
  color: rgb(var(--white-color), 1);
  /* background-color: rgb(var(--blue-color), 1); */
}

header.main_header .nav_main-element:hover {
  color: rgb(var(--hover-color), 1);
}

header.main_header .nav_main-link {
  font-size: 16px;
  font-weight: 500;
  margin-left: 15px;
  color: rgb(var(--white-color), 1);
}

header.main_header .nav_main-link:hover {
  color: rgb(var(--gold-color), 1);
}

header.main_header .main_navigation .nav_main-element .arrow {
  cursor: default;
  display: inline-block;
  transform: rotate(90deg);
  margin-left: 2px;
  color: inherit;
  pointer-events: none;
}

header.main_header .nav_main-element.open .nav_main-link {
  color: rgb(var(--gold-color), 1);
}

header.main_header .main_navigation .nav_main-element.open .arrow {
  transform: rotate(-90deg);
}

header.main_header .main_navigation .nav_main-element .nav_main_submenu {
  display: none;
  flex-wrap: wrap;
  position: absolute;
  top: 100%;
  left: 0;
  width: calc(100% - 5px);
  max-height: 70vh;
  overflow: hidden;
  overflow-y: auto;
  background-color: rgb(var(--body-background-color), 1);
  box-shadow: 0 15px 20px 0 rgb(var(--black-color), 0.05);
  border: 1px solid rgb(var(--white-color), 0.5);
  border-left: none;
  border-right: none;
  padding: 30px 5% 45px;
}

header.main_header .main_navigation .nav_main-element.open .nav_main_submenu {
  display: flex;
  animation: openMainSubmenu 0.1s ease-in-out;
}

header.main_header
  .main_navigation
  .nav_main-element
  .nav_main_submenu
  .nav_main_submenu-link {
  padding: 10px 20px;
  font-weight: 500;
  font-size: 15px;
  width: 33%;
  color: rgb(var(--white-color), 1);
}

header.main_header
  .main_navigation
  .nav_main-element
  .nav_main_submenu
  .nav_main_submenu-link:hover {
  color: rgb(var(--gold-color), 1);
}

header.main_header
  .main_navigation
  .nav_main-element
  .nav_main_submenu
  .nav_column,
header.main_header
  .main_navigation
  .nav_main-element
  .nav_main_submenu
  .nav_dropdown_column {
  width: 33.33%;
  display: flex;
  flex-direction: column;
}

header.main_header
  .main_navigation
  .nav_main-element
  .nav_main_submenu
  > div:nth-child(n + 2):nth-child(3n-1) {
  border-left: 1px solid rgb(var(--white-color), 0.5);
  border-right: 1px solid rgb(var(--white-color), 0.5);
}

header.main_header
  .main_navigation
  .nav_main-element
  .nav_main_submenu
  .nav_column
  .nav_main_submenu-link,
header.main_header
  .main_navigation
  .nav_main-element
  .nav_main_submenu
  .nav_dropdown_column
  .nav_main_submenu-link {
  width: 100%;
  border: none;
  display: block;
}

header.main_header
  .main_navigation
  .nav_main-element
  .nav_main_submenu
  > .nav_main_submenu-link:nth-child(3n-1) {
  border-left: 1px solid rgb(var(--white-color), 0.5);
  border-right: 1px solid rgb(var(--white-color), 0.5);
  border-top: none;
  border-bottom: none;
  background-color: rgb(var(--blue-color), 0.05);
}

@keyframes openMainSubmenu {
  from {
    opacity: 0;
  }
}

/* =============== SECOND HEADER (BOTTOM NAV) =============== */

header.main_header .second__header {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px 25px 20px 10px;
}

header.main_header .second__header .navigation_wrapper {
  display: flex;
  align-items: center;
}

header.main_header .second__header nav.bottom__navigation .burgernav_header {
  display: none;
}

header.main_header.shrink .second__header {
  padding: 0;
}

header.main_header .bottom__navigation {
  display: flex;
  align-items: center;
  justify-content: end;
  flex-wrap: wrap;
}

header.main_header .bottom__navigation .nav_main-element .arrow {
  cursor: default;
  display: inline-block;
  transform: rotate(90deg);
  margin-left: 2px;
  color: inherit;
  pointer-events: none;
}

header.main_header .bottom__navigation .nav_main-element.open .arrow {
  transform: rotate(-90deg);
}

header.main_header .bottom__navigation .nav_main-element .nav_main_submenu {
  display: none;
  flex-wrap: wrap;
  position: absolute;
  top: 100%;
  left: 0;
  width: calc(100% - 5px);
  max-height: 70vh;
  overflow: hidden;
  overflow-y: auto;
  background-color: rgb(var(--body-background-color), 1);
  box-shadow: 0 15px 20px 0 rgb(var(--black-color), 0.05);
  border: 1px solid rgb(var(--white-color), 0.5);
  border-left: none;
  border-right: none;
  padding: 30px 5% 45px;
}

header.main_header
  .bottom__navigation
  .nav_main-element.open
  .nav_main_submenu {
  display: flex;
  animation: openMainSubmenu 0.1s ease-in-out;
}

header.main_header
  .bottom__navigation
  .nav_main-element
  .nav_main_submenu
  .nav_main_submenu-link {
  padding: 10px 20px;
  font-weight: 500;
  font-size: 15px;
  width: 33%;
  background-color: rgb(var(--blue-color), 0.05);
  color: rgb(var(--white-color), 1);
}

header.main_header
  .bottom__navigation
  .nav_main-element
  .nav_main_submenu
  .nav_main_submenu-link:hover {
  background-color: rgb(var(--gold-color), 1);
  color: rgb(var(--white-color), 1);
}

header.main_header
  .bottom__navigation
  .nav_main-element
  .nav_main_submenu
  > .nav_main_submenu-link:nth-child(3n-1) {
  border-left: 1px solid rgb(var(--white-color), 0.5);
  border-right: 1px solid rgb(var(--white-color), 0.5);
  border-top: none;
  border-bottom: none;
  background-color: rgb(var(--blue-color), 0.05);
}

/* =============== SEARCH =============== */

header.main_header .mobile_search_opener {
  display: none;
  align-items: center;
  color: rgb(var(--white-color), 1);
  font-size: 20px;
  padding: 10px;
  /* margin-right: 10px;
  margin-left: 10px; */
  cursor: pointer;
}

header.main_header .mobile_search_opener:hover {
  color: rgb(var(--gold-color), 1);
  animation: mobile_search_iconHover 1s infinite alternate ease-in-out;
}

@keyframes mobile_search_iconHover {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(45deg);
  }
}

header.main_header .search_element {
  position: relative;
}

header.main_header .search_element .header_search_input {
  border-radius: 10px;
  border: 1px solid rgb(var(--white-color), 0.01);
  outline: none;
  background-color: rgb(var(--input-background-color), 1);
  padding: 10px 10px 10px 50px;
  color: rgb(var(--white-color), 1);
  font-size: 12px;
  width: 20vw;
  height: 20vh;
  max-height: 50px;
  max-width: 360px;
}

header.main_header .search_element .header_search_input::placeholder {
  color: rgb(var(--white-color), 1);
  font-size: 12px;
}

header.main_header .search_element .header_search_input:focus {
  border: 1px solid rgb(var(--white-color), 1);
  background-color: rgb(var(--input-background-color), 1);
  color: rgb(var(--white-color), 1);
}

header.main_header.shrink .search_element .header_search_input {
  padding: 10px 10px 10px 50px;
}

header.main_header .search_element .header_search_icon {
  position: absolute;
  top: 50%;
  right: 85%;
  transform: translateY(-50%);
  border: none;
  outline: none;
  background: none;
  color: rgb(var(--main-color), 1);
  padding: 0 15px 0 0;
}

header.main_header .search_element i::before {
  perspective: 100px;
}

header.main_header .search_element .header_search_icon:hover i::before {
  transform: rotateY(180deg);
  transition: 0.3s;
}

header.main_header .search_element .header_search_icon:active i::before {
  transform: rotateY(180deg) rotate(45deg);
  perspective: 100px;
}

header.main_header .search_element .header_search_icon:focus i {
  color: rgb(var(--blue-color), 1);
}

header.main_header .search_element i {
  font-size: 17px;
  color: rgb(var(--white-color), 1);
}

header.main_header .search_element i:active {
  font-size: 17px;
  color: rgb(var(--main-color), 1);
}

header.main_header .search_element .header_search_icon .header_search_btntext {
  display: none;
}

header.main_header .blur_element {
  filter: blur(5px);
  opacity: 0.5;
  pointer-events: none;
}

/* ================================
   MEDIA QUERIES
   ================================ */

/* ── ≥ 769px ── */
@media (min-width: 769px) {
  header.main_header .up_bar {
    padding-left: 35px;
    padding-right: 35px;
  }

  .upbar_btn_bg {
    width: 130% !important;
  }

  header.main_header .wrapper_header {
    padding: 20px 35px;
  }

  .nav_main-link:hover {
    cursor: pointer;
  }
}

/* ── ≥ 1081px ── */
@media (min-width: 1081px) {
  .crossClose_burger {
    display: none;
  }
}

/* ── ≤ 1230px ── */
@media (max-width: 1230px) {
  header.main_header .wrapper_header .logo-full {
    width: 175px;
  }

  header.main_header .wrapper_header .logo-full svg {
    height: 45px;
  }

  header.main_header .wrapper_header {
    padding: 7px 25px 5px 10px;
  }

  header.main_header .nav_main-link {
    font-size: 14px;
    margin-left: 10px;
  }

  header.main_header .search_element .header_search_input {
    padding: 7px 35px 7px 10px;
    max-width: 200px;
  }
}

/* ── ≤ 1080px (burger breakpoint) ── */
@media (max-width: 1080px) {
  #blind_run,
  .screen_reader_tq,
  .e_university {
    display: none;
  }

  header.main_header .up_bar {
    padding: 0;
  }

  header.main_header .onlyMobile {
    display: block;
  }

  header.main_header .wrapper_header .navigation_wrapper {
    flex-direction: row-reverse;
    z-index: 2;
  }

  header.main_header .overlay_header.open {
    position: fixed;
    display: block;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgb(var(--black-color), 0.5);
    backdrop-filter: blur(2px);
    z-index: 1;
  }

  /* Burger button */
  header.main_header .wrapper_header .burger_header {
    display: flex;
  }

  header.main_header .wrapper_header nav.main_navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
    margin-bottom: 10px;
    border-bottom: 2px solid rgb(var(--gray-color), 0.25);
  }

  .crossClose_burger {
    align-items: end;
    padding: 20px;
    color: rgb(var(--white-color), 1);
  }

  header.left_side {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 5px;
  }

  header.main_header
    .wrapper_header
    nav.main_navigation
    .burgernav_header
    .logo-full {
    width: 120px;
  }

  header.burgernav_header {
    display: none;
  }

  header.main_header
    .wrapper_header
    nav.main_navigation
    .burgernav_header
    .crossClose_burger {
    color: rgb(var(--white-color), 1);
    cursor: pointer;
    font-size: 20px;
    font-weight: 800;
    padding: 10px;
  }

  header.main_header
    .wrapper_header
    nav.main_navigation
    .burgernav_header
    .crossClose_burger:hover {
    color: rgb(var(--hover-color), 1);
  }

  /* Slide-in panels */
  header.main_header .main_navigation,
  header.main_header .main_navigation.open,
  header.main_header .bottom__navigation,
  header.main_header .bottom__navigation.open {
    position: fixed;
    top: 0;
    right: -100%;
    display: block;
    background-color: rgb(var(--body-background-color), 1);
    width: 100%;
    max-width: 550px;
    height: 100vh;
    z-index: 15;
    transition: 0.5s ease-in-out;
    opacity: 0;
  }

  header.main_header .main_navigation.open,
  header.main_header .bottom__navigation.open {
    right: 0;
    opacity: 1;
    overflow-x: hidden;
    overflow-y: auto;
  }

  /* Nav links */
  header.main_header .nav_main-link {
    display: flex;
    font-size: 18px !important;
    width: 100%;
    margin: 0;
    justify-content: space-between;
    align-items: center;
    padding: 15px 25px;
    border-bottom: 1px solid rgb(var(--gray-color), 0.15);
  }

  header.main_header .nav_main-link .arrow {
    font-size: 30px;
    margin: -10px 10px -10px -10px;
  }

  header.main_header .nav_main-element:last-child .nav_main-link {
    border: none;
  }

  /* Submenus — main nav */
  header.main_header .main_navigation .nav_main-element.open .nav_main_submenu {
    position: relative;
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 100%;
    max-height: 100%;
    top: 0;
    left: 0;
    right: 0;
    animation-duration: 0.4s;
    box-shadow: none;
    border: none;
    padding: 0;
  }

  header.main_header
    .main_navigation
    .nav_main-element.open
    .nav_main_submenu
    .nav_column,
  header.main_header
    .main_navigation
    .nav_main-element.open
    .nav_main_submenu
    .nav_dropdown_column {
    width: 100%;
    border: none !important;
  }

  header.main_header
    .main_navigation
    .nav_main-element.open
    .nav_main_submenu-link {
    width: 100%;
    font-size: 16px;
    font-weight: 500;
    padding: 15px 25px !important;
    border: none !important;
  }

  header.main_header
    .main_navigation
    .nav_main-element.open
    .nav_main_submenu-link :last-child {
    border-bottom: 1px solid rgb(var(--gray-color), 0.15) !important;
  }
  

  /* Submenus — bottom nav */
  header.main_header
    .bottom__navigation
    .nav_main-element.open
    .nav_main_submenu {
    position: relative;
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 100%;
    max-height: 100%;
    top: 0;
    left: 0;
    right: 0;
    animation-duration: 0.4s;
    box-shadow: none;
    background-color: rgb(var(--gray-color), 0.25);
    border: none;
    padding: 0;
  }

  header.main_header
    .bottom__navigation
    .nav_main-element.open
    .nav_main_submenu-link {
    width: 100%;
    font-size: 16px;
    font-weight: 500;
    padding: 15px 20px;
    border: none !important;
  }

  header.main_header
    .bottom__navigation
    .nav_main-element.open
    .nav_main_submenu-link:hover {
    background-color: rgb(var(--white-color), 0.5);
  }

  /* Search — mobile */
  header.main_header .mobile_search_opener {
    position: relative;
    display: block;
    z-index: 1;
  }

  header.main_header .search_element {
    position: fixed;
    top: 40%;
    left: 10px;
    right: 10px;
    max-width: 800px;
    margin: 0 auto;
    padding: 25px 15px;
    border-radius: 10px;
    z-index: 5;
    display: none;
  }

  header.main_header .search_element.open {
    display: block;
    animation: searcher_header_open 0.3s ease-in-out;
    z-index: 10;
  }

  @keyframes searcher_header_open {
    from {
      opacity: 0;
    }
  }

  header.main_header .search_element .header_search_input {
    width: 100%;
    max-width: 100%;
    padding: 10px 35px 10px 15px;
  }

  header.main_header .search_element .header_search_icon {
    border-left: 1px solid rgb(var(--gray-color), 1);
    padding: 0 0 0 10px;
    right: 25px;
    width: 2rem;
    max-width: 50px;
    position: relative;
    top: 42px;
    left: 80%;
  }

  header.main_header .search_element .header_search_icon:hover {
    font-weight: 500;
  }

  header.main_header .search_element .header_search_icon i {
    display: none;
  }

  header.main_header
    .search_element
    .header_search_icon
    .header_search_btntext {
    display: block;
  }

  /* Language — compact */
  header.main_header .wrapper_header .language_selector {
    width: auto;
  }

  header.main_header .wrapper_header .language_selector .dropdown-toggle {
    padding: 8px 10px;
    gap: 6px;
    border-radius: 8px;
    font-size: 12px;
  }

  header.main_header
    .wrapper_header
    .language_selector
    .dropdown-toggle::after {
    width: 6px;
    height: 6px;
  }

  header.main_header .wrapper_header .language_selector .dropdown-menu {
    left: auto;
    right: 0;
    border-radius: 8px;
    min-width: 120px;
  }

  /* Up bar — скрыт */
  header.main_header .up_bar,
  header.main_header.shrink .up_bar {
    display: block;
    height: 0;
    visibility: hidden;
  }

  /* Scroll state */
  header.main_header {
    transition: background-color 0.3s ease;
  }

  header.main_header.scrolled {
    background-color: rgb(var(--blue-color), 1);
  }
}

/* ── ≤ 769px ── */
@media (max-width: 769px) {
  .logo-full {
    width: 200px !important;
  }

  header.main_header .up_bar .upbar_buttons span.upbar_btn_bg {
    width: 120%;
  }
}

/* ── ≤ 768px ── */
@media (max-width: 768px) {
  header.main_header {
    background: rgb(var(--body-background-color), 1);
  }

  header.main_header .second__header {
    padding: 0;
    height: 0;
    overflow: hidden;
    /* position:fixed дочерние элементы overflow:hidden не клипает —
       main_navigation.open откроется нормально */
  }

  .subheader_ {
    height: 69px;
  }
}