:root {
  --white_100: rgb(247 247 247 / 1);
  --white_95: rgb(247 247 247 / 0.95);
  --white_80: rgb(247 247 247 / 0.8);
  --white_70: rgb(247 247 247 / 0.7);
  --white_50: rgb(247 247 247 / 0.5);
  --white_20: rgb(247 247 247 / 0.2);
  --white_10: rgb(247 247 247 / 0.1);
  --orange_100: rgb(243 98 29 / 1);
  --orange_70: rgb(243 98 29 / 0.7);
  --orange_20: rgb(243 98 29 / 0.2);
  --grey_100: rgb(73 73 73 / 1);
  --black_100: rgb(11 18 25 / 1);
  --dark-blue_100: rgb(24 42 58 / 1);
  --dark-blue_70: rgb(24 42 58 / 0.7);
  --dark-blue_50: rgb(24 42 58 / 0.5);
  --dark-blue_20: rgb(24 42 58 / 0.2);
  --dark-blue_10: rgb(24 42 58 / 0.1);
  --narrow: 80vw;
  --radius_3: 3px;
}

@font-face {
  font-family: 'Noto Sans';
  src: url('fonts/NotoSans-Bold.ttf') format('truetype');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Noto Sans';
  src: url('fonts/NotoSans-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Noto Sans';
  src: url('fonts/NotoSans-Light.ttf') format('truetype');
  font-weight: 200;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Noto Sans Condensed';
  src: url('fonts/NotoSans_Condensed-Bold.ttf') format('truetype');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Noto Sans Condensed';
  src: url('fonts/NotoSans_Condensed-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Noto Sans Condensed';
  src: url('fonts/NotoSans_Condensed-Light.ttf') format('truetype');
  font-weight: 200;
  font-style: normal;
  font-display: swap;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  padding: 0;
  color: var(--dark-blue_100);
  font-family: 'Noto Sans', sans-serif;
  background-color: var(--white_100);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 {
  font-family: 'Noto Sans Condensed', sans-serif;
  color: var(--dark-blue_100);
}
a {
  text-decoration: none;
}
.button {
  display: inline-block;
  width: fit-content;
  padding: 5px 15px;
  text-align: center;
  border-radius: var(--radius_3);
  font-weight: 400;
  margin: 0;
  box-shadow: 0px 0px 5px 1px var(--dark-blue_20), inset 0px -1px 2px var(--orange_100);
  transition: transform 0.2s, box-shadow 0.2s;
}
.button:hover {
  transform: translateY(-2px);
  box-shadow: 0px 4px 8px var(--dark-blue_20);
}
.button_visit {
  background: linear-gradient(var(--orange_100), var(--orange_70));
  color: var(--white_100);
}
.button_exhibit {
  background: linear-gradient(var(--dark-blue_100), var(--dark-blue_70));
  color: var(--white_100);
}
.button_white {
  background: linear-gradient(var(--white_80), var(--white_50));
  color: var(--dark-blue_100);
}

/* Шапка и навигация (десктоп) */
.nav_container {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 999;
  width: 100%;
  background: linear-gradient(var(--white_70), var(--white_20));
  transition: background 0.3s ease, backdrop-filter 0.3s;
  box-shadow: 0px 0px 20px 0px rgba(243, 98, 29, 0.25);
}
.nav_container.scrolled {
  background: var(--white_95);
  backdrop-filter: blur(5px);
}
.nav_top {
  width: var(--narrow);
  margin: 0 auto;
  padding-top: 0.5rem;
  margin-bottom: 0.5rem;
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid var(--white_100);
  max-height: 100px;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease, opacity 0.2s ease, margin 0.3s ease;
}
.nav_container.scrolled .nav_top {
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
  margin-bottom: 0;
  opacity: 0;
  border-bottom: none;
}
.nav_top_left, .nav_top_right {
  display: flex;
  gap: 1rem;
  font-size: 0.8rem;
  font-weight: 300;
}
.nav_top_date::before {
  content: "";
  display: inline-block;
  background-image: url(img/icon_calendar_orange.svg);
  width: 20px;
  height: 20px;
  background-size: 20px;
  margin-right: 5px;
  vertical-align: middle;
}
.nav_top_place::before {
  content: "";
  display: inline-block;
  background-image: url(img/icon_map_orange.svg);
  width: 20px;
  height: 20px;
  background-size: 20px;
  margin-right: 5px;
  vertical-align: middle;
}
.nav_top_lang a {
  color: var(--dark-blue_100);
  font-weight: bolder;
}
.nav_top_lang a:hover {
  color: var(--orange_100);
}
.nav_main {
  width: var(--narrow);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.nav_main_logo img {
  width: 9rem;
}
.nav_main_nav {
  overflow: visible;
  white-space: normal;
}
.desktop-nav ul {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.desktop-nav a {
  color: var(--white_100);
  font-weight: 400;
  font-size: 0.9rem;
  text-wrap: nowrap;
  padding: 0 5px;
  border: 1px solid transparent;
  transition: border 0.2s;
  text-transform: uppercase;
}
.nav_container.scrolled .desktop-nav a {
  color: var(--dark-blue_100);
}
.desktop-nav li {
  position: relative;
}
.desktop-nav li ul {
  display: none;
  position: absolute;
  top: 100%;
  left: -1rem;
  width: fit-content;
  background: var(--white_95);
  border-radius: var(--radius_3);
  padding: 10px 15px;
  white-space: nowrap;
  box-shadow: 0 4px 8px var(--dark-blue_20);
  z-index: 1000;
}
.desktop-nav li:hover ul {
  display: block;
  margin-top: 15px;
}
.desktop-nav li:hover ul::before {
  content: "";
  display: block;
  height: 20px;
  width: 100%;
  background: transparent;
  position: absolute;
  top: -20px;
  left: 0;
}
.desktop-nav li ul li {
  margin: 5px;
}
.desktop-nav li ul a {
  color: var(--dark-blue_70);
  text-transform: none;
  border: none;
  white-space: nowrap;
}
.desktop-nav li ul a:hover {
  border-bottom: 1px solid var(--orange_70);
  color: var(--orange_100);
}
.desktop-nav li:hover > a {
  border: 1px solid var(--white_95);
  border-radius: var(--radius_3);
}

/* Видео */
.video_container {
  width: 100%;
  height: 50vh;
  overflow: hidden;
  position: relative;
  border-bottom: 10px solid var(--orange_100);
}
.video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.video_overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--dark-blue_70);
}
.video_overlay_card {
  background: var(--orange_70);
  width: 35vw;
  padding: 20px;
  margin-top: 15vh;
  margin-left: 1vw;
  color: var(--white_100);
  border-radius: var(--radius_3);
}
.video_overlay_card h1 {
  color: var(--white_100);
}

/* Цифры */
.digits_container {
  width: var(--narrow);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin: -30px auto 0;
  position: relative;
  z-index: 10;
  flex-wrap: wrap;
}
.digits_item {
  background: radial-gradient(var(--white_20), var(--dark-blue_70)), url(img/background_tools_dark.webp);
  background-size: cover;
  border: 5px solid var(--orange_100);
  border-radius: var(--radius_3);
  padding: 10px;
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--white_100);
  flex: 1;
  min-width: 180px;
}
.digits_item span {
  font-weight: 600;
  font-size: 2rem;
  display: block;
}
.digits_icon img {
  width: 70px;
}

/* Введение */
.intro_text {
  width: var(--narrow);
  margin: 70px auto 50px;
}
.intro_text h1 {
  font-size: 3.5rem;
  margin: 0;
}
.intro_text h2 {
  margin: 0;
}
.intro_text p {
  font-size: 1.3rem;
}
.dissolvable {
  position: relative;
  cursor: pointer;
  min-height: 35px;
}
.dissolvable-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  transition: opacity 0.5s ease-in-out, filter 0.5s ease-in-out;
}
.dissolvable-first {
  opacity: 1;
  filter: blur(0px);
}
.dissolvable-last {
  opacity: 0;
  filter: blur(10px);
  pointer-events: none;
}
.dissolvable:hover .dissolvable-first {
  opacity: 0;
  filter: blur(10px);
}
.dissolvable:hover .dissolvable-last {
  opacity: 1;
  filter: blur(0px);
  pointer-events: auto;
}

/* Преимущества */
.advantages_container {
  width: var(--narrow);
  margin: 50px auto;
  display: flex;
  gap: 1rem;
  color: white;
}
.advantages_container h2 {
  color: white;
}
.advantages_item {
  border-top: 5px solid var(--orange_100);
  flex: 1;
  background-size: cover;
  background-position: center;
  border-radius: var(--radius_3);
  min-height: 280px;
}
.advantages_overlay {
  height: 100%;
  background: radial-gradient(var(--dark-blue_50), var(--dark-blue_100));
  padding: 20px;
  border-radius: var(--radius_3);
  text-shadow: 1px 1px 1px var(--dark-blue_70);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* Быстрые ссылки */
.quicklinks_container {
  display: grid;
  width: var(--narrow);
  margin: 0 auto;
  gap: 1rem;
  grid-template-columns: 4fr 2fr 4fr 3fr;
  grid-template-areas:
    "exhibit exhibit visit catalogue"
    "stat sections sections catalogue";
}
.quicklinks_item {
  border-top: 5px solid var(--dark-blue_100);
  border-radius: var(--radius_3);
  background-color: var(--orange_100);
  padding: 0 20px;
  display: flex;
  align-items: center;
  background-image: url(img/background_tools_transparent.webp);
  background-size: 500px;
}
.quicklinks_item:hover {
	cursor: pointer;
	transform: translateY(-2px);
	box-shadow: 0px 4px 8px var(--dark-blue_20);
	transition: transform 0.2s, box-shadow 0.2s;  	
}
.quicklinks_item h3 {
  color: white;
}
.link_exhibit { grid-area: exhibit; }
.link_visit { grid-area: visit; }
.link_stat { grid-area: stat; }
.link_sections { grid-area: sections; }
.link_catalogue { grid-area: catalogue; }

/* Баннер */
.banner_container {
	background: url(img/background_tools_dark.webp);
	background-size: contain;
	margin: 30px 0;
	position: relative;
	text-align: center;

	& img {
		width: var(--narrow);
		height: 280px;
		overflow: hidden;
		margin: 40px;
		object-fit: cover;		
	}
}

.banner_container::after {
	content: "РЕКЛАМА";	
	position: absolute;
	display: block;
	right: 50%;
	transform: translateX(50%);
	bottom: 1rem;
	color: var(--white_50);
	font-size: .75rem;
}
/* .banner_container {
  background: url(img/background_tools_dark.webp);
  background-size: contain;
  margin: 30px 0;
  position: relative;
  text-align: center;
}
.banner_container img {
  width: var(--narrow);
  height: 280px;
  object-fit: cover;
  margin: 40px auto;
  display: block;
}
.banner_container::after {
  content: "РЕКЛАМА";
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  color: var(--white_50);
  font-size: 0.75rem;
} */

/* Новости */
.news_container {
  display: grid;
  width: var(--narrow);
  margin: 30px auto;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
}
.news_item {
  border: 1px solid var(--dark-blue_10);
  border-top: 5px solid var(--orange_100);
  border-radius: var(--radius_3);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.news_item:hover {
  transform: translateY(-1px);
}

.news_item h3 {
  margin: 10px 5px;
}
.news_item p:first-of-type {
  color: var(--dark-blue_50);
  font-size: 0.8rem;
  margin: 5px;
  text-align: right;
}
.news_item p {
  margin: 10px 5px;
  font-size: 0.9rem;
}
.news_img {
  aspect-ratio: 16 / 9;
  background-size: cover;
  background-position: center;
}

/* Подписка */
.news_subscription_container {
  background: var(--dark-blue_10);
  padding: 20px;
}
.news_subscription_item {
  width: var(--narrow);
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 30px;
  flex-wrap: wrap;
}
.news_subscription_item input[type="email"] {
  padding: 8px 12px;
  border: 1px solid var(--dark-blue_20);
  border-radius: var(--radius_3);
  font-size: 1rem;
  min-width: 250px;
}
.news_subscription_item input[type="submit"] {
  background: var(--orange_100);
  color: white;
  border: none;
  padding: 8px 20px;
  border-radius: var(--radius_3);
  cursor: pointer;
  font-weight: bold;
}

/* Партнёры (карусель) */
.footer_partners {
  margin: 50px auto;
  width: var(--narrow);
}
.footer_partners_viewport {
  display: flex;
  overflow-x: auto;
  scrollbar-width: none;
}
.footer_partners_viewport::-webkit-scrollbar {
  display: none;
}
.footer_partners_container {
  display: flex;
  gap: 2rem;
  padding-right: 2rem;
  animation: scrollPartners 25s infinite linear;
}
@keyframes scrollPartners {
  from { transform: translateX(0); }
  to { transform: translateX(-100%); }
}
.footer_partners_item {
  background: white;
  width: 150px;
  border-radius: var(--radius_3);
  margin: 5px;
  text-align: center;
  display: grid;
  grid-template-rows: auto auto;
  gap: 0.5rem;
  padding: 10px;
  box-shadow: 0 2px 6px var(--dark-blue_10);
}
.footer_partner_txt {
  font-size: 0.8rem;
  font-weight: 500;
}
.footer_partners_item img {
  max-width: 100%;
  height: auto;
}

/* Футер нижний */
.footer {
  padding: 20px;
  background: url(img/background_tools_dark.webp);
  background-size: contain;
  background-repeat: repeat;
  color: var(--white_100);
}
.footer_container {
  width: var(--narrow);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 3rem;
  flex-wrap: wrap;
}
.footer_left, .footer_right {
  font-size: 0.8rem;
  flex: 1;
  color: var(--white_50);
}
.footer_logo img {
  width: 150px;
}
.footer_socials img {
  width: 22px;
  margin: 10px 5px;
}
.footer_nav ul {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}
.footer_nav a {
  color: var(--white_100);
  font-size: 0.9rem;
}
.footer_org {
  text-align: center;
  margin-top: 1rem;
}
.footer_org h4 {
  color: var(--white_70);
}
.footer_org img {
  width: 300px;
  border-radius: var(--radius_3);
  padding: 10px 20px;
  background: var(--white_10);
}

/* ===== МОБИЛЬНАЯ ВЕРСИЯ ===== */
@media (max-width: 1280px) {
  .mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1002;
  }
  .mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background: var(--orange_100);
    border-radius: 3px;
    transition: 0.3s;
  }
  .mobile-menu-toggle.active {
    display: none;
  }

  .nav_main_nav {
    position: fixed;
    top: 0;
    left: -100%;
    width: 85%;
    max-width: 320px;
    height: 100vh;
    background: var(--white_100);
    transition: left 0.3s ease;
    z-index: 1001;
    overflow-y: auto;
    box-shadow: 2px 0 10px rgba(0,0,0,0.2);
    padding: 20px;
    box-sizing: border-box;
  }
  .nav_main_nav.active {
    left: 0;
  }
  /* Скрываем десктопное меню и кнопки в шапке */
  .desktop-nav {
    display: none;
  }
  .nav_main_buttons {
    display: none;
  }
  /* Показываем мобильное меню */
  .mobile-nav {
    display: flex;
    flex-direction: column;
    height: 100%;
  }
  .mobile-logo {
    width: 120px;
    margin-bottom: 20px;
  }
  .mobile-main-menu {
    list-style: none;
    padding: 0;
    margin: 0 0 20px 0;
    flex: 1;
  }
  .mobile-main-menu li {
    margin-bottom: 5px;
    border-bottom: 1px solid var(--dark-blue_10);
  }
  .menu-parent {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    font-weight: 600;
    font-family: 'Noto Sans Condensed', sans-serif;
    font-size: 1.1rem;
    color: var(--dark-blue_100);
    cursor: pointer;
  }
  .menu-parent .arrow {
    font-size: 0.7rem;
    transition: transform 0.2s;
  }
  .menu-parent.open .arrow {
    transform: rotate(180deg);
  }
  .mobile-submenu {
    list-style: none;
    padding-left: 15px;
    margin: 0 0 10px 0;
    display: none;
  }
  .mobile-submenu.open {
    display: block;
  }
  .mobile-submenu li {
    margin: 8px 0;
    border-bottom: none;
  }
  .mobile-submenu a {
    color: var(--dark-blue_70);
    text-decoration: none;
    font-size: 0.9rem;
    display: block;
    word-break: break-word;
  }
  .menu-single {
    display: block;
    padding: 12px 0;
    font-weight: 600;
    font-family: 'Noto Sans Condensed', sans-serif;
    font-size: 1.1rem;
    color: var(--dark-blue_100);
    text-decoration: none;
  }
  .mobile-buttons {
    margin-top: auto;
    padding-top: 20px;
    display: flex;
    gap: 10px;
  }
  .mobile-buttons .button {
    flex: 1;
    text-align: center;
  }

  /* Оверлей должен быть под меню, но над содержимым */
  body.menu-open::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    /* z-index: 1000; */
    pointer-events: auto;
  }
  /* Убедимся, что меню выше оверлея */
  .nav_main_nav.active {
    z-index: 1002;
  }

  /* Адаптация остальных элементов */
  :root {
    --narrow: 90vw;
  }
  .video_overlay_card {
    width: 80vw;
    margin-top: 10vh;
    margin-left: 5vw;
    padding: 15px;
  }
  .video_overlay_card h1 {
    font-size: 1.2rem;
  }
  .advantages_container {
    flex-direction: column;
  }
  .quicklinks_container {
    grid-template-columns: 1fr;
    grid-template-areas:
      "exhibit"
      "visit"
      "stat"
      "sections"
      "catalogue";
  }
  .digits_item {
    min-width: 100%;
  }
  .digits_item span {
    font-size: 1.5rem;
  }
  .digits_icon img {
    width: 50px;
  }
  .intro_text h1 {
    font-size: 2.5rem;
  }
  .footer_container {
    flex-direction: column;
    text-align: center;
  }
  .footer_nav ul {
    justify-content: center;
  }
  .footer_org img {
    width: 100%;
    max-width: 280px;
  }
  .news_subscription_item {
    flex-direction: column;
  }
  

  }
  .banner_container img {
	/* height: auto; */
	max-width: 100%;
	margin: 40px 0;	
  }


  /* Tablets and smaller monitors */
  @media(max-width: 1280px) {
  }

@media (min-width: 1280px) {
  .mobile-menu-toggle {
    display: none;
  }
  .mobile-nav {
    display: none;
  }
}

/* .sticky_note {
  background: rgb(255 255 0 / .5);
  color: var(--grey_70);
  border: var(--radius_3);
  padding: 10px;
  transform: rotate(-5deg);
  position: absolute; 
  left: 40%;
  width: 300px;
  z-index: 10000;
  filter: drop-shadow(2px 2px 2px var(--white_100));
  border: 3px solid yellow;
  text-shadow: 1px 1px 1px rgb(255 255 0 / .2);
  font-weight: 600;
}

.sticky_note_header {
  top: 30px;    
}

.sticky_note_quicklinks {
  top: 140vh;
}

.sticky_note_news {
  top: 220vh;
}

.sticky_note_partners {
  bottom: 220vh;
} */