/* Shared responsive safeguards. Loaded after the legacy theme styles. */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  max-width: 100%;
  overflow-x: hidden;
}

body {
  max-width: 100%;
  overflow-x: hidden;
}

html.planetarium-page,
html.planetarium-page body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

img,
svg,
video,
canvas,
iframe {
  max-width: 100%;
}

img,
svg,
video,
canvas {
  height: auto;
}

/* Header used by the home and explorer pages. */
.site-header {
  align-items: center;
  min-height: 56px;
  padding-block: 0;
  padding-inline: clamp(16px, 2.2vw, 30px);
  background: rgba(255, 255, 255, .97);
  border-bottom-color: rgba(8, 8, 8, .08);
  box-shadow: 0 3px 16px rgba(0, 0, 0, .07);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.sfc_logo,
.site-title,
.lang_wrapper,
.language-button {
  align-self: center;
}

.sfc_logo {
  display: inline-flex;
  width: 94px;
  height: 56px;
  align-items: center;
  justify-content: flex-start;
  overflow: hidden;
  border-radius: 8px;
  transition: opacity .35s ease, transform .35s cubic-bezier(.22, .61, .36, 1);
}

.sfc_logo:hover,
.sfc_logo:focus-visible {
  opacity: .82;
  transform: translateY(-1px);
}

.sfc_logo-image {
  position: static;
  width: 100%;
  max-width: 94px;
  height: auto;
  max-height: 40px;
  object-fit: contain;
  transform: none;
}

.language-button {
  min-height: 38px;
  padding: 5px 9px 5px 7px;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: 999px;
  transition: color .3s ease, background-color .3s ease, border-color .3s ease, box-shadow .3s ease, transform .3s cubic-bezier(.22, .61, .36, 1);
}

.language-button img {
  width: 23px;
  height: 23px;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, .12);
}

.language-button:hover,
.language-button:focus-visible,
.lang_wrapper.is-open .language-button {
  border-color: rgba(0, 0, 0, .08);
  background: rgba(0, 0, 0, .035);
  box-shadow: 0 4px 12px rgba(0, 0, 0, .06);
  transform: translateY(-1px);
}

.language-button:focus-visible,
.sfc_logo:focus-visible {
  outline: 2px solid rgba(52, 127, 139, .5);
  outline-offset: 2px;
}

.langPreview {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .75px;
}

.dropdown-arrow {
  border-top-color: #4d4d4d;
  transition: transform .3s ease;
}

.lang_wrapper.is-open .dropdown-arrow {
  transform: rotate(180deg);
}

.lang-popup-div {
  right: 0;
  left: auto;
  min-width: 130px;
  padding: 8px;
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 10px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, .28);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-5px) scale(.97);
  transform-origin: right top;
  transition: opacity .25s ease, transform .25s cubic-bezier(.22, .61, .36, 1), visibility 0s linear .25s;
}

.lang_wrapper.is-open .lang-popup-div {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0) scale(1);
  transition-delay: 0s;
}

.home-banner {
  --home-banner-planet-size: clamp(128px, 7.25vw, 146px);
}

.neptune_img_wrapper,
.kepler_img_wrapper,
.asteroid_img_wrapper,
.moon_img_wrapper {
  top: calc(var(--home-banner-planet-size) * -.43);
  left: 50%;
  width: var(--home-banner-planet-size);
  height: var(--home-banner-planet-size);
  transform: translateX(-50%);
  border-width: 12px;
}

@media (max-width: 640px) {
  .site-header {
    grid-template-columns: minmax(62px, 1fr) auto;
    gap: 8px;
    min-height: 52px;
    padding-inline: 12px;
  }

  .sfc_logo {
    width: 72px;
    height: 52px;
  }

  .sfc_logo-image {
    max-width: 72px;
    max-height: 34px;
  }

  .site-title {
    min-width: 0;
    overflow: hidden;
    font-size: clamp(10px, 3.15vw, 13px);
    letter-spacing: clamp(.7px, .35vw, 1.5px);
    text-overflow: ellipsis;
  }

  .language-button {
    min-width: 34px;
    min-height: 34px;
    justify-content: center;
    padding: 5px;
  }

  .language-button img {
    width: 22px;
    height: 22px;
  }

  .lang-popup-div {
    right: -4px;
    left: auto;
    transform: translateY(-5px) scale(.97);
    transform-origin: right top;
  }

  .lang_wrapper.is-open .lang-popup-div {
    transform: translateY(0) scale(1);
  }
}

/* Universe card grid. */
@media (max-width: 900px) {
  .home-banner {
    --home-banner-planet-size: clamp(126px, 32vw, 142px);
  }

  .homePage_container {
    min-height: calc(100svh - 52px);
    padding-inline: clamp(18px, 6vw, 54px);
  }

  .banners_wrapper {
    grid-template-columns: repeat(2, minmax(150px, 210px));
    gap: 132px clamp(22px, 7vw, 54px);
  }
}

/* Moon navigation: keep each image proportional, on its orbital coordinate,
   and above the active planet so its information icon always receives taps. */
@media (min-width: 901px) {
  .container_wrapper .solar_systm .planet .moon {
    --responsive-moon-size: clamp(84px, 6.3vw, 119px);
    width: var(--responsive-moon-size);
    height: var(--responsive-moon-size);
    margin-left: calc((200px - var(--responsive-moon-size)) / 2);
    margin-top: calc((200px - var(--responsive-moon-size)) / 2);
    z-index: 60 !important;
    pointer-events: auto;
    transform-origin: center;
  }
}

@media (max-width: 900px) {
  .container_wrapper .solar_systm .planet .moon {
    --mobile-moon-size: clamp(66px, 16.8vw, 88px);
    --mobile-moon-half: clamp(33px, 8.4vw, 44px);
    --mobile-moon-scale: .24;
    z-index: 60 !important;
    pointer-events: auto;
    transform: scale(var(--mobile-moon-scale)) !important;
    transform-origin: center;
  }

  .container_wrapper .solar_systm .planet .moon h2,
  .container_wrapper .solar_systm .planet .moon .moon-info-tooltip {
    position: relative;
    z-index: 70 !important;
    pointer-events: auto !important;
  }
}

@media (max-width: 480px) {
  .container_wrapper .solar_systm .planet .moon {
    --mobile-moon-scale: .21;
  }
}

@media (min-width: 701px) and (max-width: 900px) {
  .container_wrapper .solar_systm .planet .moon {
    --mobile-moon-scale: .27;
  }
}

/* Phone: one full banner at a time, with looped arrow navigation. */
@media (max-width: 520px) {
  html.mobile-home-carousel-active,
  html.mobile-home-carousel-active body {
    height: 100%;
    overflow: hidden;
    overscroll-behavior: none;
  }

  .homePage_container {
    display: grid;
    place-items: center;
    min-height: calc(100svh - 52px);
    height: calc(100svh - 52px);
    padding: 0;
    overflow: hidden;
  }

  .banners_wrapper.mobile-banner-carousel {
    position: relative;
    display: block;
    width: min(64vw, 250px);
    height: min(142vw, 610px);
    margin: 0;
    padding: 58px 0 48px;
    overflow: visible;
    touch-action: none;
  }

  .mobile-banner-carousel .home-banner,
  .mobile-banner-carousel .system-explorer_banner,
  .mobile-banner-carousel .uncharted-universe_banner,
  .mobile-banner-carousel .outer-space_banner,
  .mobile-banner-carousel .moon-rover_banner {
    position: absolute;
    top: 58px;
    left: 50%;
    width: 100%;
    max-width: none;
    height: auto;
    margin: 0;
    opacity: 0;
    pointer-events: none;
    transition: transform .52s cubic-bezier(.22, .61, .36, 1), opacity .38s ease;
    will-change: transform, opacity;
  }

  .mobile-banner-carousel .home-banner[data-carousel-position="active"] {
    z-index: 3;
    opacity: 1;
    pointer-events: auto;
    transform: translateX(-50%);
  }

  .mobile-banner-carousel .home-banner[data-carousel-position="left"] {
    z-index: 2;
    transform: translateX(calc(-50% - 104vw));
  }

  .mobile-banner-carousel .home-banner[data-carousel-position="right"] {
    z-index: 2;
    transform: translateX(calc(-50% + 104vw));
  }

  .mobile-banner-carousel .home-banner[data-carousel-position^="far-"] {
    z-index: 1;
    transition: none;
    transform: translateX(calc(-50% + 140vw));
  }

  .mobile-banner-carousel .home-banner[data-carousel-position="far-left"] {
    transform: translateX(calc(-50% - 140vw));
  }

  .mobile-banner-controls {
    position: absolute;
    right: 0;
    top: 50%;
    left: 0;
    z-index: 20;
    display: flex;
    justify-content: space-between;
    padding: 0 14px;
    pointer-events: none;
    transform: translateY(-50%);
  }

  .mobile-banner-arrow {
    position: relative;
    display: grid;
    place-items: center;
    width: 54px;
    height: 54px;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: transparent;
    overflow: visible;
    filter: drop-shadow(0 5px 9px rgba(0, 0, 0, .5));
    pointer-events: auto;
    transition: filter .2s ease;
  }

  .mobile-banner-arrow::before {
    content: none;
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: #fff;
    animation: mobile-banner-arrow-colour 3.8s linear infinite;
    -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 5px), #000 calc(100% - 4px));
    mask: radial-gradient(farthest-side, transparent calc(100% - 5px), #000 calc(100% - 4px));
  }

  .mobile-banner-arrow svg {
    position: relative;
    z-index: 1;
    display: block;
    width: 58%;
    height: 58%;
    fill: none;
    stroke: rgba(255, 255, 255, .9);
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 7;
    filter: drop-shadow(0 2px 3px rgba(0, 0, 0, .5));
  }

  .mobile-banner-arrow:active {
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, .48));
  }

  .mobile-banner-arrow.is-clicked {
    animation: mobile-banner-arrow-click .42s cubic-bezier(.22, .61, .36, 1);
  }

  @keyframes mobile-banner-arrow-click {
    0%, 100% { transform: scale(1); }
    45% { transform: scale(.8); }
    72% { transform: scale(1.12); }
  }

  @keyframes mobile-banner-arrow-colour {
    to { transform: rotate(1turn); }
  }
}

@media (max-width: 520px) {
  .homePage_container:not(:has(.mobile-banner-carousel)) {
    padding: 84px 0 96px;
    overflow-x: hidden;
    overflow-y: auto;
  }

  .banners_wrapper:not(.mobile-banner-carousel) {
    width: 100%;
    display: flex;
    grid-template-columns: none;
    justify-content: flex-start;
    gap: 28px;
    margin: 0;
    padding: 64px 18px 92px;
    overflow-x: auto;
    overflow-y: visible;
    scroll-padding-inline: 18px;
    scroll-snap-type: x mandatory;
    touch-action: pan-x pan-y;
    -webkit-overflow-scrolling: touch;
  }

  .banners_wrapper:not(.mobile-banner-carousel)::-webkit-scrollbar {
    display: none;
  }

  .home-banner,
  .system-explorer_banner,
  .uncharted-universe_banner,
  .outer-space_banner,
  .moon-rover_banner {
    flex: 0 0 min(64vw, 205px);
    scroll-snap-align: center;
  }
}

@media (max-height: 560px) and (orientation: landscape) {
  .homePage_container:not(:has(.mobile-banner-carousel)) {
    padding-block: 76px 88px;
  }

  .banners_wrapper:not(.mobile-banner-carousel) {
    grid-template-columns: repeat(2, minmax(145px, 190px));
    gap: 120px 50px;
  }
}

/* Planetarium: fluid controls and detail drawer for all touch-screen widths. */
.planet-nav {
  position: absolute;
  /* Align the arrow with the small circular planet thumbnails. */
  left: 5px;
  z-index: 20;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  padding: 9px;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.planet-nav img {
  width: 25px;
}

.planet-nav-next {
  top: calc(50svh - 209px);
}

.planet-nav-previous {
  top: calc(50svh + 93px);
}

.planet-nav-previous-final {
  top: calc(50svh + 55px);
}

.planet-nav-previous img {
  transform: rotate(180deg);
}

.container_wrapper label.menu,
.container_wrapper .planet_description label,
.container_wrapper .planet_description a,
.planet-nav {
  pointer-events: auto !important;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.container_wrapper label.menu {
  z-index: 30;
}

/* Center the five planet rows in the space between both page arrows. */
.container_wrapper.planet-nav-both label.menu {
  transform: translateY(-10px);
}

.container_wrapper .planet_description {
  pointer-events: none;
}

.container_wrapper .panel .scf-logo {
  display: block;
  position: relative;
  left: auto;
  margin: 0 auto 24px;
}

.container_wrapper .planet_description label {
  position: relative;
  z-index: 40;
  display: inline-flex;
  min-width: 132px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}

.container_wrapper .planet_description a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}

.container_wrapper .solar_systm .planet .moon {
  pointer-events: auto;
}

/* Keep Earth's Moon circular without clipping its label and information icon. */
.container_wrapper .solar_systm .planet.earth .moon {
  box-sizing: border-box;
  width: 200px;
  min-width: 200px;
  max-width: 200px;
  height: 200px;
  min-height: 200px;
  max-height: 200px;
  aspect-ratio: 1 / 1;
  overflow: visible;
  border-radius: 50%;
  clip-path: none;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.container_wrapper .solar_systm .planet .moon h2,
.container_wrapper .solar_systm .planet .moon h3 {
  width: max-content;
  max-width: none;
  white-space: nowrap;
  overflow-wrap: normal;
  word-break: keep-all;
}

/* Keep the information trigger immediately after the moon name. */
.container_wrapper .solar_systm .planet .moon h2 {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.container_wrapper .solar_systm .planet .moon h2 .moon-info-tooltip,
.container_wrapper .solar_systm .planet.earth .moon h2 .moon-info-tooltip {
  position: static !important;
  left: auto !important;
  top: auto !important;
  right: auto !important;
  bottom: auto !important;
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  margin: 0;
  transform: none !important;
}

@media (max-width: 900px) {
  .container_wrapper .solar_systm .planet .moon h2 {
    gap: 8px;
  }

  .container_wrapper .solar_systm .planet .moon h2 .moon-info-tooltip,
  .container_wrapper .solar_systm .planet.earth .moon h2 .moon-info-tooltip {
    width: 28px;
    height: 28px;
  }
}

.container_wrapper .solar_systm .planet .moon-info-tooltip {
  position: absolute;
  left: -52px;
  top: 82px;
  z-index: 4;
  display: inline-flex;
  width: 36px;
  height: 36px;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  cursor: help;
  pointer-events: auto;
}

.container_wrapper .solar_systm .planet .moon-info-tooltip img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
}

.container_wrapper .solar_systm .planet .moon-info-card {
  position: absolute;
  right: 240px;
  top: -100px;
  z-index: 100002;
  width: min(500px, calc(100vw - 48px));
  padding: 54px 28px 28px;
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 14px 40px rgba(0, 0, 0, .32);
  color: #111;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-12px);
  transition: opacity .2s ease, transform .2s ease, visibility .2s;
  pointer-events: auto;
}

.container_wrapper .solar_systm .planet .moon-info-card::after {
  content: "";
  position: absolute;
  right: -24px;
  bottom: 54px;
  border-top: 20px solid transparent;
  border-bottom: 20px solid transparent;
  border-left: 25px solid #fff;
}

.container_wrapper .solar_systm .planet .moon-info-card.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.container_wrapper .solar_systm .planet .moon-info-card p {
  margin: 0 0 22px;
  color: #111;
  font-family: Montserrat, sans-serif;
  font-size: clamp(14px, 1.15vw, 22px);
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: .7px;
  text-align: left;
  text-transform: uppercase;
}

.container_wrapper .solar_systm .planet .moon-info-card p:last-child {
  margin-bottom: 0;
}

.container_wrapper .solar_systm .planet .moon-info-close {
  position: absolute;
  top: 10px;
  right: 14px;
  padding: 0;
  border: 0;
  background: transparent;
  color: #111;
  font-family: Arial, sans-serif;
  font-size: 38px;
  line-height: 1;
  cursor: pointer;
  pointer-events: auto;
}

/* Open moon cards are portalled to <body>, outside the transformed planet
   layers, so every moon's information window stays above the whole site. */
body > .moon-info-card {
  box-sizing: border-box;
  position: fixed;
  z-index: 2147483647;
  top: var(--moon-card-top, 50%);
  left: var(--moon-card-left, 50%);
  right: auto;
  width: clamp(220px, 24vw, 330px);
  max-width: calc(100vw - 24px);
  max-height: calc(100dvh - 24px);
  padding: clamp(30px, 2.4vw, 36px) clamp(14px, 1.6vw, 18px) clamp(12px, 1.4vw, 16px);
  overflow: visible;
  border-radius: clamp(10px, 1vw, 14px);
  background: #fff;
  box-shadow: 0 14px 40px rgba(0, 0, 0, .42);
  color: #111;
  font-family: Montserrat, sans-serif;
  opacity: 0;
  visibility: hidden;
  transform: none;
  pointer-events: auto;
}

body > .moon-info-card:not(.is-open) {
  display: none;
}

body > .moon-info-card.is-open {
  display: block;
  opacity: 1;
  visibility: visible;
  transform: none;
}

body > .moon-info-card.is-positioning {
  visibility: hidden;
}

body > .moon-info-card::after {
  content: "";
  position: absolute;
  display: block;
  width: 0;
  height: 0;
  border: 11px solid transparent;
  filter: drop-shadow(2px 2px 2px rgba(0, 0, 0, .14));
  pointer-events: none;
}

body > .moon-info-card.points-right::after {
  top: var(--moon-arrow-y, 50%);
  right: -21px;
  border-left-color: #fff;
  transform: translateY(-50%);
}

body > .moon-info-card.points-left::after {
  top: var(--moon-arrow-y, 50%);
  left: -21px;
  border-right-color: #fff;
  transform: translateY(-50%);
}

body > .moon-info-card.points-bottom::after {
  bottom: -21px;
  left: var(--moon-arrow-x, 50%);
  border-top-color: #fff;
  transform: translateX(-50%);
}

body > .moon-info-card.points-top::after {
  top: -21px;
  left: var(--moon-arrow-x, 50%);
  border-bottom-color: #fff;
  transform: translateX(-50%);
}

body > .moon-info-card p {
  margin: 0 0 clamp(10px, 1vw, 14px);
  color: #111;
  font-family: Montserrat, sans-serif;
  font-size: clamp(10px, .72vw, 13px);
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: .7px;
  text-align: left;
  text-transform: uppercase;
}

body > .moon-info-card p:last-child {
  margin-bottom: 0;
}

body > .moon-info-card .moon-info-close {
  position: absolute;
  top: 10px;
  right: 14px;
  padding: 0;
  border: 0;
  background: transparent;
  color: #111;
  font: 30px/1 Arial, sans-serif;
  cursor: pointer;
  pointer-events: auto;
}

@media (min-width: 901px) {
  .container_wrapper .solar_systm .planet {
    width: 1380px;
    height: 1380px;
    border-radius: 690px;
    background-size: 1311px 1047px !important;
    bottom: -1058px;
  }

  /* Scale every moon by screen width without changing its round source image.
     The margin keeps its original orbital centre, so moons stay near the planet. */
  .container_wrapper .solar_systm .planet .moon {
    --responsive-moon-size: clamp(116px, 9.8vw, 165px);
    width: var(--responsive-moon-size);
    height: var(--responsive-moon-size);
    margin-left: calc((200px - var(--responsive-moon-size)) / 2);
    margin-top: calc((200px - var(--responsive-moon-size)) / 2);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
  }

  .container_wrapper .solar_systm .planet.earth .trajectory.m,
  .container_wrapper .solar_systm .planet.jupiter .trajectory.lop,
  .container_wrapper .solar_systm .planet.saturn .trajectory.ti,
  .container_wrapper .solar_systm .planet.uranus .trajectory.mir,
  .container_wrapper .solar_systm .planet.neptune .trajectory.tri {
    left: -60px;
    top: -60px;
  }

  .container_wrapper .solar_systm .planet.jupiter .trajectory.eu,
  .container_wrapper .solar_systm .planet.saturn .trajectory.di,
  .container_wrapper .solar_systm .planet.uranus .trajectory.ari,
  .container_wrapper .solar_systm .planet.neptune .trajectory.pro {
    left: -75px;
    top: -75px;
  }

  .container_wrapper .solar_systm .planet.mars .trajectory.p {
    left: -110px;
    top: -110px;
  }

  .container_wrapper .solar_systm .planet.jupiter .trajectory.ga,
  .container_wrapper .solar_systm .planet.saturn .trajectory.enc,
  .container_wrapper .solar_systm .planet.uranus .trajectory.umb,
  .container_wrapper .solar_systm .planet.neptune .trajectory.ner {
    left: -190px;
    top: -190px;
  }

  .container_wrapper .solar_systm .planet.mars .trajectory.d {
    left: -195px;
    top: -195px;
  }
}

@media (max-width: 900px) {
  .container_wrapper .solar_systm .planet {
    max-width: none;
    left: calc(50% - 600px);
  }

  .container_wrapper .solar_systm .planet.earth .trajectory.m,
  .container_wrapper .solar_systm .planet.jupiter .trajectory.lop,
  .container_wrapper .solar_systm .planet.saturn .trajectory.ti,
  .container_wrapper .solar_systm .planet.uranus .trajectory.mir,
  .container_wrapper .solar_systm .planet.neptune .trajectory.tri {
    left: -150px;
    top: -150px;
  }

  .container_wrapper .solar_systm .planet.jupiter .trajectory.eu,
  .container_wrapper .solar_systm .planet.saturn .trajectory.di,
  .container_wrapper .solar_systm .planet.uranus .trajectory.ari,
  .container_wrapper .solar_systm .planet.neptune .trajectory.pro {
    left: -165px;
    top: -165px;
  }

  .container_wrapper .solar_systm .planet.mars .trajectory.p {
    left: -200px;
    top: -200px;
  }

  .container_wrapper .solar_systm .planet.jupiter .trajectory.ga,
  .container_wrapper .solar_systm .planet.saturn .trajectory.enc,
  .container_wrapper .solar_systm .planet.uranus .trajectory.umb,
  .container_wrapper .solar_systm .planet.neptune .trajectory.ner {
    left: -280px;
    top: -280px;
  }

  .container_wrapper .solar_systm .planet.mars .trajectory.d {
    left: -285px;
    top: -285px;
  }

  .container_wrapper .solar_systm .planet .moon {
    --mobile-moon-size: clamp(90px, 24.5vw, 119px);
    --mobile-moon-half: clamp(45px, 12.25vw, 59.5px);
    --moon-orbit-near: clamp(82px, 17vw, 132px);
    --moon-orbit-far: clamp(122px, 24vw, 180px);
    --moon-orbit-high: clamp(210px, 32vw, 270px);
    width: var(--mobile-moon-size);
    height: var(--mobile-moon-size);
    aspect-ratio: 1;
    --mobile-moon-scale: clamp(.24, .21 + 1.4vw, .29);
    transform: scale(var(--mobile-moon-scale));
    transform-origin: center;
    border-radius: 50%;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    z-index: 40 !important;
  }

  @media (max-width: 380px) {
    .container_wrapper .solar_systm .planet .moon {
      --mobile-moon-scale: .22;
    }
  }

  .container_wrapper .solar_systm .planet .moon h2 {
    display: inline-flex;
    align-items: center;
    gap: 14px;
  }

  .container_wrapper .solar_systm .planet.earth .moon {
    width: var(--mobile-moon-size);
    min-width: var(--mobile-moon-size);
    max-width: var(--mobile-moon-size);
    height: var(--mobile-moon-size);
    min-height: var(--mobile-moon-size);
    max-height: var(--mobile-moon-size);
    left: calc(600px - var(--mobile-moon-half));
    /* Put the Moon's visual centre on Earth's dashed orbit. */
    top: calc(-150px - var(--mobile-moon-half));
    /* The supplied PNG includes transparent padding around the Moon. */
    background-size: cover;
  }

  .container_wrapper .solar_systm .planet.mars .deimos {
    left: calc(600px + var(--moon-orbit-near) - var(--mobile-moon-half));
    top: calc(0px - var(--moon-orbit-high) - var(--mobile-moon-half));
  }

  .container_wrapper .solar_systm .planet.mars .phoebos {
    left: calc(600px - var(--moon-orbit-near) - var(--mobile-moon-half));
    top: calc(0px - var(--moon-orbit-far) - var(--mobile-moon-half));
  }

  .container_wrapper .solar_systm .planet.jupiter .lo,
  .container_wrapper .solar_systm .planet.saturn .titan,
  .container_wrapper .solar_systm .planet.uranus .miranda,
  .container_wrapper .solar_systm .planet.neptune .triton {
    left: calc(600px - var(--moon-orbit-far) - var(--mobile-moon-half));
    top: calc(0px - var(--moon-orbit-near) - var(--mobile-moon-half));
  }

  .container_wrapper .solar_systm .planet.jupiter .europa,
  .container_wrapper .solar_systm .planet.saturn .dione,
  .container_wrapper .solar_systm .planet.uranus .ariel,
  .container_wrapper .solar_systm .planet.neptune .proteus {
    left: calc(600px - var(--mobile-moon-half));
    top: calc(0px - var(--moon-orbit-far) - var(--mobile-moon-half));
  }

  .container_wrapper .solar_systm .planet.jupiter .ganymede,
  .container_wrapper .solar_systm .planet.saturn .enceladus,
  .container_wrapper .solar_systm .planet.uranus .umbriel,
  .container_wrapper .solar_systm .planet.neptune .nereid {
    left: calc(600px + var(--moon-orbit-far) - var(--mobile-moon-half));
    top: calc(0px - var(--moon-orbit-high) - var(--mobile-moon-half));
  }

  .container_wrapper .solar_systm .planet .moon-info-tooltip {
    position: relative;
    top: auto;
    left: auto;
    flex: 0 0 auto;
    width: 1.1em !important;
    height: 1.1em !important;
    transform: translate(var(--tooltip-shift-x, 0px), var(--tooltip-shift-y, 0px));
    z-index: 42 !important;
    touch-action: manipulation;
  }

  /* Preserve the visual icon size while providing a reliable finger-sized
     target after the moon's scale transform is applied. */
  .container_wrapper .solar_systm .planet .moon-info-tooltip::before {
    content: "";
    position: absolute;
    inset: -32px;
    border-radius: 50%;
  }

  .container_wrapper .solar_systm .planet.earth .moon h2 {
    position: relative;
    z-index: 100;
    pointer-events: auto;
    touch-action: manipulation;
  }

  .container_wrapper .solar_systm .planet.earth .moon-info-tooltip {
    z-index: 101 !important;
    pointer-events: auto !important;
  }

  .container_wrapper .solar_systm .planet.earth .moon-info-tooltip::before {
    inset: -42px;
  }

  .container_wrapper .solar_systm .planet.earth .moon h2 {
    gap: .45em;
  }

  .container_wrapper .solar_systm .planet .moon-info-card {
    position: fixed;
    top: calc(52px + 18px);
    left: 18px;
    right: 18px;
    width: auto;
    max-height: calc(100svh - 92px);
    overflow-y: auto;
    padding: 50px 22px 24px;
    transform: translateY(-8px);
    -webkit-overflow-scrolling: touch;
  }

  /* Open cards are moved to <body> so transformed planet/moon layers cannot
     redefine their fixed containing block in mobile Safari. */
  body > .moon-info-card {
    position: fixed;
    z-index: 2147483647;
    top: var(--moon-card-top, 50%);
    right: auto;
    bottom: auto;
    left: var(--moon-card-left, 50%);
    width: min(76vw, 290px);
    max-width: calc(100vw - 24px);
    max-height: calc(100dvh - 24px);
    margin: 0;
    padding: clamp(28px, 7vw, 34px) clamp(12px, 3.8vw, 16px) clamp(12px, 3.8vw, 16px);
    overflow: visible;
    border-radius: clamp(10px, 3.5vw, 14px);
    background: #fff;
    box-shadow: 0 14px 40px rgba(0, 0, 0, .42);
    color: #111;
    font-family: Montserrat, sans-serif;
    font-size: clamp(10px, 2.6vw, 12px);
    line-height: 1.45;
    letter-spacing: .4px;
    text-align: left;
    text-transform: uppercase;
    transform: none;
    -webkit-overflow-scrolling: touch;
  }

  body > .moon-info-card:not(.is-open) {
    display: none;
  }

  body > .moon-info-card.is-open {
    display: block;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  body > .moon-info-card .moon-info-close {
    position: absolute;
    z-index: 1;
    top: 8px;
    right: 14px;
    padding: 0;
    border: 0;
    background: transparent;
    color: #111;
    font: 28px/1 Arial, sans-serif;
  }

  body > .moon-info-card p {
    margin: 0 0 16px;
    color: #111;
    font: inherit;
  }

  .container_wrapper .solar_systm .planet .moon-info-card::after {
    display: none;
  }

  .container_wrapper .solar_systm .planet .moon-info-card.is-open {
    transform: translateY(0);
  }

  .container_wrapper .solar_systm .planet_description {
    right: auto !important;
    left: calc(600px - min(310px, calc(50vw - 20px))) !important;
    width: min(620px, calc(100vw - 40px)) !important;
    text-align: center !important;
  }

  .container_wrapper .solar_systm .planet_description h1 {
    max-width: 100%;
    overflow-wrap: anywhere;
  }
}

@media (max-width: 760px) {
  .container_wrapper {
    height: calc(100svh - 52px);
    min-height: 420px;
    background-attachment: scroll;
  }

  .container_wrapper label.menu {
    left: 14px;
    width: 132px;
    min-height: 44px;
    padding-block: 6px;
  }

  .container_wrapper label.menu .preview {
    width: 32px;
    height: 32px;
  }

  .container_wrapper label.menu .info {
    left: 44px;
    top: 2px;
  }

  .container_wrapper label.menu h2 {
    font-size: 10px;
  }

  .container_wrapper label.menu h3 {
    font-size: 8px;
  }

  .container_wrapper .solar_systm .planet {
    max-width: none;
    left: calc(50% - 600px);
  }

  .container_wrapper .solar_systm .planet_description h1 {
    font-size: clamp(20px, 7vw, 30px);
    letter-spacing: clamp(6px, 2.6vw, 12px);
  }

  .container_wrapper .solar_systm .planet_description p {
    display: none;
  }

  .container_wrapper .panel {
    right: -110%;
    width: 100%;
    height: 100%;
    padding: 58px clamp(22px, 7vw, 42px) 90px;
    z-index: 100000;
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
    touch-action: pan-y;
    -webkit-overflow-scrolling: touch;
  }

  .container_wrapper .read:checked + label + input + .panel {
    right: 0;
  }

  .container_wrapper label.closeBig {
    position: fixed;
    top: calc(52px + env(safe-area-inset-top, 0px) + 10px);
    left: calc(12px + env(safe-area-inset-left, 0px));
    right: auto;
    width: 44px;
    height: 44px;
    z-index: 100001;
    pointer-events: none;
  }

  .container_wrapper .read:checked + label.closeBig {
    pointer-events: auto !important;
  }

  .container_wrapper label.closeBig::after {
    content: url("../img/close.png");
    top: 12px;
    right: auto;
    left: 12px;
    width: 20px;
    height: 20px;
    padding: 0;
    opacity: 0;
    transform: scale(.25);
    transform-origin: center;
  }

  .container_wrapper .read:checked + label.closeBig::after {
    opacity: 1;
  }

  .container_wrapper label.closeBig > .closeBig-side_area {
    top: -12px;
    right: 44px;
    width: 0;
    height: calc(100svh - 52px);
    pointer-events: none;
  }

  .container_wrapper .read:checked + label > .closeBig-side_area {
    width: 0;
    pointer-events: none;
  }

  .container_wrapper .panel h1 {
    padding-top: 26px;
  }

  .panel-info_wrapper {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 24px 18px;
  }

  .panel-info_icon {
    width: 34px !important;
  }

  .panel-info_text,
  .panel-info_text-header {
    width: 100%;
    min-width: 0;
    overflow-wrap: anywhere;
  }

  .scf-logo,
  .purchase_button {
    left: auto;
    margin-inline: auto;
  }

  .scf-logo {
    display: block;
    position: relative;
    margin: 0 auto 24px;
  }
}

@media (max-height: 560px) and (orientation: landscape) {
  .planet-nav-next {
    top: 16px;
  }

  .planet-nav-previous,
  .planet-nav-previous-final {
    top: calc(100svh - 120px);
  }

  .container_wrapper label.menu {
    transform: scale(.85);
    transform-origin: left center;
  }

  .container_wrapper .solar_systm .planet_description h2 {
    margin-top: 24px;
  }

  .container_wrapper .panel {
    padding-top: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}

/* Match HOME/MRL corner controls. */
.site-header {
  background: transparent;
  border-bottom-color: transparent;
  box-shadow: none;
  backdrop-filter: none;
}

.sfc_logo-image {
  filter: none;
}

.language-button {
  min-height: 38px;
  padding: 5px 10px 5px 7px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 999px;
  background: rgba(9,11,13,.72);
  color: #eee;
  backdrop-filter: blur(12px);
}

.language-button:hover,
.language-button:focus-visible,
.lang_wrapper.is-open .language-button {
  border-color: rgba(255,255,255,.27);
  background: rgba(17,21,26,.8);
  box-shadow: 0 5px 15px rgba(0,0,0,.38);
}

.langPreview { color: #eee; }
.dropdown-arrow { border-top-color: #aaa; }
.lang-popup-div { background: rgba(8,10,12,.93); }
.lang-popup-div button { color: #ddd; }
.lang-popup-div button:hover { background: rgba(255,255,255,.07); color: #fff; }

/* Full-height fixed information drawer, matching MRL. */
.container_wrapper .panel {
  position: fixed;
  top: 0;
  right: -105%;
  width: clamp(390px,32vw,500px);
  max-width: 100vw;
  height: 100vh;
  height: 100dvh;
  transition: right .42s cubic-bezier(.4,0,.2,1);
  box-shadow: -18px 0 42px rgba(0,0,0,.66);
  overscroll-behavior: contain;
}

.container_wrapper .read:checked + label + input + .panel { right: 0; }

@media(max-width:600px) {
  .container_wrapper .panel { width:100vw; max-width:none; right:-105vw; }
  .container_wrapper .read:checked + label + input + .panel { right:0; }
}

@media(max-width:640px) {
  .language-button .langPreview { display:block; }
  .language-button { min-width:64px; }
}

.container_wrapper label.closeBig {
  position:fixed;
  top:10px;
  left:10px;
  right:auto;
  width:44px;
  height:44px;
  z-index:200000001!important;
  pointer-events:none;
}

.container_wrapper .read:checked + label.closeBig { pointer-events:auto!important; }
.container_wrapper label.closeBig::after {
  top:12px;
  left:12px;
  right:auto;
  width:20px;
  height:20px;
  transform:scale(.25);
  transform-origin:center;
}

/* Drawer and close control must stay above the complete explorer UI. */
.container_wrapper { --sse-drawer-width:clamp(390px,32vw,500px); }
.container_wrapper .panel {
  width:var(--sse-drawer-width);
  z-index:2147483000!important;
}
.container_wrapper label.closeBig {
  left:calc(100vw - var(--sse-drawer-width) + 10px);
  top:10px;
  width:44px!important;
  min-width:44px;
  height:44px!important;
  z-index:2147483001!important;
  border:0;
  border-radius:0;
  background:transparent;
  box-shadow:none;
  opacity:0;
  visibility:hidden;
  transform:translateX(6px) scale(.9);
  transition:opacity .18s ease,transform .18s ease,visibility 0s linear .18s;
}
.container_wrapper .read:checked + label.closeBig {
  opacity:1;
  visibility:visible;
  transform:none;
  transition:opacity .22s ease .42s,transform .22s ease .42s,visibility 0s linear .42s;
}
.container_wrapper label.closeBig:hover { opacity:.65; }
.container_wrapper label.closeBig::after {
  content:"";
  display:block;
  inset:0;
  width:44px;
  height:44px;
  background:url("../img/close.png") center/20px 20px no-repeat;
  opacity:1;
  transform:none;
}
.container_wrapper label.closeBig > .closeBig-side_area { z-index:-1; }

@media(max-width:600px) {
  .container_wrapper { --sse-drawer-width:100vw; }
  .container_wrapper label.closeBig { left:10px; }
}

body:has(.container_wrapper input[id^="read"].read:checked) .container_wrapper {
  position:relative;
  z-index:2147482000!important;
}
body:has(.container_wrapper input[id^="read"].read:checked) .site-header {
  z-index:1!important;
  pointer-events:none;
}
.container_wrapper .read:checked + label.closeBig {
  display:block!important;
  pointer-events:auto!important;
  cursor:pointer;
  touch-action:manipulation;
  user-select:none;
}
.container_wrapper .read:checked + label.closeBig::after {
  pointer-events:none!important;
}

/* Keep moon photos proportional and their centres locked to orbital paths. */
@media (max-width: 900px) {
  .container_wrapper .solar_systm .planet .moon {
    --mobile-moon-size: clamp(83px, 22.4vw, 104px);
    --mobile-moon-half: clamp(41.5px, 11.2vw, 52px);
    --mobile-moon-scale: .28;
    background-size: cover;
    background-position: center;
  }

  .container_wrapper .solar_systm .planet.jupiter .lo,
  .container_wrapper .solar_systm .planet.saturn .titan,
  .container_wrapper .solar_systm .planet.uranus .miranda,
  .container_wrapper .solar_systm .planet.neptune .triton {
    left: calc(600px - 30vw - var(--mobile-moon-half));
    top: calc(-141px - var(--mobile-moon-half));
  }

  .container_wrapper .solar_systm .planet.jupiter .europa,
  .container_wrapper .solar_systm .planet.saturn .dione,
  .container_wrapper .solar_systm .planet.uranus .ariel,
  .container_wrapper .solar_systm .planet.neptune .proteus {
    left: calc(600px - var(--mobile-moon-half));
    top: calc(-165px - var(--mobile-moon-half));
  }

  .container_wrapper .solar_systm .planet.jupiter .ganymede,
  .container_wrapper .solar_systm .planet.saturn .enceladus,
  .container_wrapper .solar_systm .planet.uranus .umbriel,
  .container_wrapper .solar_systm .planet.neptune .nereid {
    left: calc(600px + 30vw - var(--mobile-moon-half));
    top: calc(-272px - var(--mobile-moon-half));
  }
}

/* Phones: centre each moon label (eyebrow, name, info icon) on its moon so long
   names such as Ganymede no longer run off the right edge of the screen. */
@media (max-width: 900px) {
  .container_wrapper .solar_systm .planet .moon .moon-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
  }
}